1 /*
2 * Copyright (c) 1999, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "asm/macroAssembler.hpp"
26 #include "ci/ciUtilities.inline.hpp"
27 #include "ci/ciSymbols.hpp"
28 #include "classfile/vmIntrinsics.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "compiler/compileLog.hpp"
31 #include "gc/shared/barrierSet.hpp"
32 #include "jfr/support/jfrIntrinsics.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "oops/klass.inline.hpp"
35 #include "oops/objArrayKlass.hpp"
36 #include "opto/addnode.hpp"
37 #include "opto/arraycopynode.hpp"
38 #include "opto/c2compiler.hpp"
39 #include "opto/castnode.hpp"
40 #include "opto/cfgnode.hpp"
41 #include "opto/convertnode.hpp"
42 #include "opto/countbitsnode.hpp"
43 #include "opto/idealKit.hpp"
44 #include "opto/library_call.hpp"
45 #include "opto/mathexactnode.hpp"
46 #include "opto/mulnode.hpp"
47 #include "opto/narrowptrnode.hpp"
48 #include "opto/opaquenode.hpp"
49 #include "opto/parse.hpp"
50 #include "opto/runtime.hpp"
51 #include "opto/rootnode.hpp"
52 #include "opto/subnode.hpp"
53 #include "opto/vectornode.hpp"
54 #include "prims/jvmtiExport.hpp"
55 #include "prims/jvmtiThreadState.hpp"
56 #include "prims/unsafe.hpp"
57 #include "runtime/jniHandles.inline.hpp"
58 #include "runtime/objectMonitor.hpp"
59 #include "runtime/sharedRuntime.hpp"
60 #include "runtime/stubRoutines.hpp"
61 #include "utilities/macros.hpp"
62 #include "utilities/powerOfTwo.hpp"
63
64 //---------------------------make_vm_intrinsic----------------------------
65 CallGenerator* Compile::make_vm_intrinsic(ciMethod* m, bool is_virtual) {
66 vmIntrinsicID id = m->intrinsic_id();
67 assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
68
69 if (!m->is_loaded()) {
70 // Do not attempt to inline unloaded methods.
71 return nullptr;
72 }
73
74 C2Compiler* compiler = (C2Compiler*)CompileBroker::compiler(CompLevel_full_optimization);
75 bool is_available = false;
76
77 {
78 // For calling is_intrinsic_supported and is_intrinsic_disabled_by_flag
79 // the compiler must transition to '_thread_in_vm' state because both
80 // methods access VM-internal data.
81 VM_ENTRY_MARK;
82 methodHandle mh(THREAD, m->get_Method());
83 is_available = compiler != nullptr && compiler->is_intrinsic_available(mh, C->directive());
84 if (is_available && is_virtual) {
85 is_available = vmIntrinsics::does_virtual_dispatch(id);
86 }
87 }
88
89 if (is_available) {
90 assert(id <= vmIntrinsics::LAST_COMPILER_INLINE, "caller responsibility");
91 assert(id != vmIntrinsics::_Object_init && id != vmIntrinsics::_invoke, "enum out of order?");
92 return new LibraryIntrinsic(m, is_virtual,
93 vmIntrinsics::predicates_needed(id),
94 vmIntrinsics::does_virtual_dispatch(id),
95 id);
96 } else {
97 return nullptr;
98 }
99 }
100
101 JVMState* LibraryIntrinsic::generate(JVMState* jvms) {
102 LibraryCallKit kit(jvms, this);
103 Compile* C = kit.C;
104 int nodes = C->unique();
105 #ifndef PRODUCT
106 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
107 char buf[1000];
108 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf));
109 tty->print_cr("Intrinsic %s", str);
110 }
111 #endif
112 ciMethod* callee = kit.callee();
113 const int bci = kit.bci();
114 #ifdef ASSERT
115 Node* ctrl = kit.control();
116 #endif
117 // Try to inline the intrinsic.
118 if (callee->check_intrinsic_candidate() &&
119 kit.try_to_inline(_last_predicate)) {
120 const char *inline_msg = is_virtual() ? "(intrinsic, virtual)"
121 : "(intrinsic)";
122 CompileTask::print_inlining_ul(callee, jvms->depth() - 1, bci, InliningResult::SUCCESS, inline_msg);
123 C->inline_printer()->record(callee, jvms, InliningResult::SUCCESS, inline_msg);
124 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked);
125 if (C->log()) {
126 C->log()->elem("intrinsic id='%s'%s nodes='%d'",
127 vmIntrinsics::name_at(intrinsic_id()),
128 (is_virtual() ? " virtual='1'" : ""),
129 C->unique() - nodes);
130 }
131 // Push the result from the inlined method onto the stack.
132 kit.push_result();
133 return kit.transfer_exceptions_into_jvms();
134 }
135
136 // The intrinsic bailed out
137 assert(ctrl == kit.control(), "Control flow was added although the intrinsic bailed out");
138 if (jvms->has_method()) {
139 // Not a root compile.
140 const char* msg;
141 if (callee->intrinsic_candidate()) {
142 msg = is_virtual() ? "failed to inline (intrinsic, virtual)" : "failed to inline (intrinsic)";
143 } else {
144 msg = is_virtual() ? "failed to inline (intrinsic, virtual), method not annotated"
145 : "failed to inline (intrinsic), method not annotated";
146 }
147 CompileTask::print_inlining_ul(callee, jvms->depth() - 1, bci, InliningResult::FAILURE, msg);
148 C->inline_printer()->record(callee, jvms, InliningResult::FAILURE, msg);
149 } else {
150 // Root compile
151 ResourceMark rm;
152 stringStream msg_stream;
153 msg_stream.print("Did not generate intrinsic %s%s at bci:%d in",
154 vmIntrinsics::name_at(intrinsic_id()),
155 is_virtual() ? " (virtual)" : "", bci);
156 const char *msg = msg_stream.freeze();
157 log_debug(jit, inlining)("%s", msg);
158 if (C->print_intrinsics() || C->print_inlining()) {
159 tty->print("%s", msg);
160 }
161 }
162 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed);
163
164 return nullptr;
165 }
166
167 Node* LibraryIntrinsic::generate_predicate(JVMState* jvms, int predicate) {
168 LibraryCallKit kit(jvms, this);
169 Compile* C = kit.C;
170 int nodes = C->unique();
171 _last_predicate = predicate;
172 #ifndef PRODUCT
173 assert(is_predicated() && predicate < predicates_count(), "sanity");
174 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
175 char buf[1000];
176 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf));
177 tty->print_cr("Predicate for intrinsic %s", str);
178 }
179 #endif
180 ciMethod* callee = kit.callee();
181 const int bci = kit.bci();
182
183 Node* slow_ctl = kit.try_to_predicate(predicate);
184 if (!kit.failing()) {
185 const char *inline_msg = is_virtual() ? "(intrinsic, virtual, predicate)"
186 : "(intrinsic, predicate)";
187 CompileTask::print_inlining_ul(callee, jvms->depth() - 1, bci, InliningResult::SUCCESS, inline_msg);
188 C->inline_printer()->record(callee, jvms, InliningResult::SUCCESS, inline_msg);
189
190 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked);
191 if (C->log()) {
192 C->log()->elem("predicate_intrinsic id='%s'%s nodes='%d'",
193 vmIntrinsics::name_at(intrinsic_id()),
194 (is_virtual() ? " virtual='1'" : ""),
195 C->unique() - nodes);
196 }
197 return slow_ctl; // Could be null if the check folds.
198 }
199
200 // The intrinsic bailed out
201 if (jvms->has_method()) {
202 // Not a root compile.
203 const char* msg = "failed to generate predicate for intrinsic";
204 CompileTask::print_inlining_ul(kit.callee(), jvms->depth() - 1, bci, InliningResult::FAILURE, msg);
205 C->inline_printer()->record(kit.callee(), jvms, InliningResult::FAILURE, msg);
206 } else {
207 // Root compile
208 ResourceMark rm;
209 stringStream msg_stream;
210 msg_stream.print("Did not generate intrinsic %s%s at bci:%d in",
211 vmIntrinsics::name_at(intrinsic_id()),
212 is_virtual() ? " (virtual)" : "", bci);
213 const char *msg = msg_stream.freeze();
214 log_debug(jit, inlining)("%s", msg);
215 C->inline_printer()->record(kit.callee(), jvms, InliningResult::FAILURE, msg);
216 }
217 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed);
218 return nullptr;
219 }
220
221 bool LibraryCallKit::try_to_inline(int predicate) {
222 // Handle symbolic names for otherwise undistinguished boolean switches:
223 const bool is_store = true;
224 const bool is_compress = true;
225 const bool is_static = true;
226 const bool is_volatile = true;
227
228 if (!jvms()->has_method()) {
229 // Root JVMState has a null method.
230 assert(map()->memory()->Opcode() == Op_Parm, "");
231 // Insert the memory aliasing node
232 set_all_memory(reset_memory());
233 }
234 assert(merged_memory(), "");
235
236 switch (intrinsic_id()) {
237 case vmIntrinsics::_hashCode: return inline_native_hashcode(intrinsic()->is_virtual(), !is_static);
238 case vmIntrinsics::_identityHashCode: return inline_native_hashcode(/*!virtual*/ false, is_static);
239 case vmIntrinsics::_getClass: return inline_native_getClass();
240
241 case vmIntrinsics::_ceil:
242 case vmIntrinsics::_floor:
243 case vmIntrinsics::_rint:
244 case vmIntrinsics::_dsin:
245 case vmIntrinsics::_dcos:
246 case vmIntrinsics::_dtan:
247 case vmIntrinsics::_dtanh:
248 case vmIntrinsics::_dabs:
249 case vmIntrinsics::_fabs:
250 case vmIntrinsics::_iabs:
251 case vmIntrinsics::_labs:
252 case vmIntrinsics::_datan2:
253 case vmIntrinsics::_dsqrt:
254 case vmIntrinsics::_dsqrt_strict:
255 case vmIntrinsics::_dexp:
256 case vmIntrinsics::_dlog:
257 case vmIntrinsics::_dlog10:
258 case vmIntrinsics::_dpow:
259 case vmIntrinsics::_dcopySign:
260 case vmIntrinsics::_fcopySign:
261 case vmIntrinsics::_dsignum:
262 case vmIntrinsics::_roundF:
263 case vmIntrinsics::_roundD:
264 case vmIntrinsics::_fsignum: return inline_math_native(intrinsic_id());
265
266 case vmIntrinsics::_notify:
267 case vmIntrinsics::_notifyAll:
268 return inline_notify(intrinsic_id());
269
270 case vmIntrinsics::_addExactI: return inline_math_addExactI(false /* add */);
271 case vmIntrinsics::_addExactL: return inline_math_addExactL(false /* add */);
272 case vmIntrinsics::_decrementExactI: return inline_math_subtractExactI(true /* decrement */);
273 case vmIntrinsics::_decrementExactL: return inline_math_subtractExactL(true /* decrement */);
274 case vmIntrinsics::_incrementExactI: return inline_math_addExactI(true /* increment */);
275 case vmIntrinsics::_incrementExactL: return inline_math_addExactL(true /* increment */);
276 case vmIntrinsics::_multiplyExactI: return inline_math_multiplyExactI();
277 case vmIntrinsics::_multiplyExactL: return inline_math_multiplyExactL();
278 case vmIntrinsics::_multiplyHigh: return inline_math_multiplyHigh();
279 case vmIntrinsics::_unsignedMultiplyHigh: return inline_math_unsignedMultiplyHigh();
280 case vmIntrinsics::_negateExactI: return inline_math_negateExactI();
281 case vmIntrinsics::_negateExactL: return inline_math_negateExactL();
282 case vmIntrinsics::_subtractExactI: return inline_math_subtractExactI(false /* subtract */);
283 case vmIntrinsics::_subtractExactL: return inline_math_subtractExactL(false /* subtract */);
284
285 case vmIntrinsics::_arraycopy: return inline_arraycopy();
286
287 case vmIntrinsics::_arraySort: return inline_array_sort();
288 case vmIntrinsics::_arrayPartition: return inline_array_partition();
289
290 case vmIntrinsics::_compareToL: return inline_string_compareTo(StrIntrinsicNode::LL);
291 case vmIntrinsics::_compareToU: return inline_string_compareTo(StrIntrinsicNode::UU);
292 case vmIntrinsics::_compareToLU: return inline_string_compareTo(StrIntrinsicNode::LU);
293 case vmIntrinsics::_compareToUL: return inline_string_compareTo(StrIntrinsicNode::UL);
294
295 case vmIntrinsics::_indexOfL: return inline_string_indexOf(StrIntrinsicNode::LL);
296 case vmIntrinsics::_indexOfU: return inline_string_indexOf(StrIntrinsicNode::UU);
297 case vmIntrinsics::_indexOfUL: return inline_string_indexOf(StrIntrinsicNode::UL);
298 case vmIntrinsics::_indexOfIL: return inline_string_indexOfI(StrIntrinsicNode::LL);
299 case vmIntrinsics::_indexOfIU: return inline_string_indexOfI(StrIntrinsicNode::UU);
300 case vmIntrinsics::_indexOfIUL: return inline_string_indexOfI(StrIntrinsicNode::UL);
301 case vmIntrinsics::_indexOfU_char: return inline_string_indexOfChar(StrIntrinsicNode::U);
302 case vmIntrinsics::_indexOfL_char: return inline_string_indexOfChar(StrIntrinsicNode::L);
303
304 case vmIntrinsics::_equalsL: return inline_string_equals(StrIntrinsicNode::LL);
305
306 case vmIntrinsics::_vectorizedHashCode: return inline_vectorizedHashCode();
307
308 case vmIntrinsics::_toBytesStringU: return inline_string_toBytesU();
309 case vmIntrinsics::_getCharsStringU: return inline_string_getCharsU();
310 case vmIntrinsics::_getCharStringU: return inline_string_char_access(!is_store);
311 case vmIntrinsics::_putCharStringU: return inline_string_char_access( is_store);
312
313 case vmIntrinsics::_compressStringC:
314 case vmIntrinsics::_compressStringB: return inline_string_copy( is_compress);
315 case vmIntrinsics::_inflateStringC:
316 case vmIntrinsics::_inflateStringB: return inline_string_copy(!is_compress);
317
318 case vmIntrinsics::_getReference: return inline_unsafe_access(!is_store, T_OBJECT, Relaxed, false);
319 case vmIntrinsics::_getBoolean: return inline_unsafe_access(!is_store, T_BOOLEAN, Relaxed, false);
320 case vmIntrinsics::_getByte: return inline_unsafe_access(!is_store, T_BYTE, Relaxed, false);
321 case vmIntrinsics::_getShort: return inline_unsafe_access(!is_store, T_SHORT, Relaxed, false);
322 case vmIntrinsics::_getChar: return inline_unsafe_access(!is_store, T_CHAR, Relaxed, false);
323 case vmIntrinsics::_getInt: return inline_unsafe_access(!is_store, T_INT, Relaxed, false);
324 case vmIntrinsics::_getLong: return inline_unsafe_access(!is_store, T_LONG, Relaxed, false);
325 case vmIntrinsics::_getFloat: return inline_unsafe_access(!is_store, T_FLOAT, Relaxed, false);
326 case vmIntrinsics::_getDouble: return inline_unsafe_access(!is_store, T_DOUBLE, Relaxed, false);
327
328 case vmIntrinsics::_putReference: return inline_unsafe_access( is_store, T_OBJECT, Relaxed, false);
329 case vmIntrinsics::_putBoolean: return inline_unsafe_access( is_store, T_BOOLEAN, Relaxed, false);
330 case vmIntrinsics::_putByte: return inline_unsafe_access( is_store, T_BYTE, Relaxed, false);
331 case vmIntrinsics::_putShort: return inline_unsafe_access( is_store, T_SHORT, Relaxed, false);
332 case vmIntrinsics::_putChar: return inline_unsafe_access( is_store, T_CHAR, Relaxed, false);
333 case vmIntrinsics::_putInt: return inline_unsafe_access( is_store, T_INT, Relaxed, false);
334 case vmIntrinsics::_putLong: return inline_unsafe_access( is_store, T_LONG, Relaxed, false);
335 case vmIntrinsics::_putFloat: return inline_unsafe_access( is_store, T_FLOAT, Relaxed, false);
336 case vmIntrinsics::_putDouble: return inline_unsafe_access( is_store, T_DOUBLE, Relaxed, false);
337
338 case vmIntrinsics::_getReferenceVolatile: return inline_unsafe_access(!is_store, T_OBJECT, Volatile, false);
339 case vmIntrinsics::_getBooleanVolatile: return inline_unsafe_access(!is_store, T_BOOLEAN, Volatile, false);
340 case vmIntrinsics::_getByteVolatile: return inline_unsafe_access(!is_store, T_BYTE, Volatile, false);
341 case vmIntrinsics::_getShortVolatile: return inline_unsafe_access(!is_store, T_SHORT, Volatile, false);
342 case vmIntrinsics::_getCharVolatile: return inline_unsafe_access(!is_store, T_CHAR, Volatile, false);
343 case vmIntrinsics::_getIntVolatile: return inline_unsafe_access(!is_store, T_INT, Volatile, false);
344 case vmIntrinsics::_getLongVolatile: return inline_unsafe_access(!is_store, T_LONG, Volatile, false);
345 case vmIntrinsics::_getFloatVolatile: return inline_unsafe_access(!is_store, T_FLOAT, Volatile, false);
346 case vmIntrinsics::_getDoubleVolatile: return inline_unsafe_access(!is_store, T_DOUBLE, Volatile, false);
347
348 case vmIntrinsics::_putReferenceVolatile: return inline_unsafe_access( is_store, T_OBJECT, Volatile, false);
349 case vmIntrinsics::_putBooleanVolatile: return inline_unsafe_access( is_store, T_BOOLEAN, Volatile, false);
350 case vmIntrinsics::_putByteVolatile: return inline_unsafe_access( is_store, T_BYTE, Volatile, false);
351 case vmIntrinsics::_putShortVolatile: return inline_unsafe_access( is_store, T_SHORT, Volatile, false);
352 case vmIntrinsics::_putCharVolatile: return inline_unsafe_access( is_store, T_CHAR, Volatile, false);
353 case vmIntrinsics::_putIntVolatile: return inline_unsafe_access( is_store, T_INT, Volatile, false);
354 case vmIntrinsics::_putLongVolatile: return inline_unsafe_access( is_store, T_LONG, Volatile, false);
355 case vmIntrinsics::_putFloatVolatile: return inline_unsafe_access( is_store, T_FLOAT, Volatile, false);
356 case vmIntrinsics::_putDoubleVolatile: return inline_unsafe_access( is_store, T_DOUBLE, Volatile, false);
357
358 case vmIntrinsics::_getShortUnaligned: return inline_unsafe_access(!is_store, T_SHORT, Relaxed, true);
359 case vmIntrinsics::_getCharUnaligned: return inline_unsafe_access(!is_store, T_CHAR, Relaxed, true);
360 case vmIntrinsics::_getIntUnaligned: return inline_unsafe_access(!is_store, T_INT, Relaxed, true);
361 case vmIntrinsics::_getLongUnaligned: return inline_unsafe_access(!is_store, T_LONG, Relaxed, true);
362
363 case vmIntrinsics::_putShortUnaligned: return inline_unsafe_access( is_store, T_SHORT, Relaxed, true);
364 case vmIntrinsics::_putCharUnaligned: return inline_unsafe_access( is_store, T_CHAR, Relaxed, true);
365 case vmIntrinsics::_putIntUnaligned: return inline_unsafe_access( is_store, T_INT, Relaxed, true);
366 case vmIntrinsics::_putLongUnaligned: return inline_unsafe_access( is_store, T_LONG, Relaxed, true);
367
368 case vmIntrinsics::_getReferenceAcquire: return inline_unsafe_access(!is_store, T_OBJECT, Acquire, false);
369 case vmIntrinsics::_getBooleanAcquire: return inline_unsafe_access(!is_store, T_BOOLEAN, Acquire, false);
370 case vmIntrinsics::_getByteAcquire: return inline_unsafe_access(!is_store, T_BYTE, Acquire, false);
371 case vmIntrinsics::_getShortAcquire: return inline_unsafe_access(!is_store, T_SHORT, Acquire, false);
372 case vmIntrinsics::_getCharAcquire: return inline_unsafe_access(!is_store, T_CHAR, Acquire, false);
373 case vmIntrinsics::_getIntAcquire: return inline_unsafe_access(!is_store, T_INT, Acquire, false);
374 case vmIntrinsics::_getLongAcquire: return inline_unsafe_access(!is_store, T_LONG, Acquire, false);
375 case vmIntrinsics::_getFloatAcquire: return inline_unsafe_access(!is_store, T_FLOAT, Acquire, false);
376 case vmIntrinsics::_getDoubleAcquire: return inline_unsafe_access(!is_store, T_DOUBLE, Acquire, false);
377
378 case vmIntrinsics::_putReferenceRelease: return inline_unsafe_access( is_store, T_OBJECT, Release, false);
379 case vmIntrinsics::_putBooleanRelease: return inline_unsafe_access( is_store, T_BOOLEAN, Release, false);
380 case vmIntrinsics::_putByteRelease: return inline_unsafe_access( is_store, T_BYTE, Release, false);
381 case vmIntrinsics::_putShortRelease: return inline_unsafe_access( is_store, T_SHORT, Release, false);
382 case vmIntrinsics::_putCharRelease: return inline_unsafe_access( is_store, T_CHAR, Release, false);
383 case vmIntrinsics::_putIntRelease: return inline_unsafe_access( is_store, T_INT, Release, false);
384 case vmIntrinsics::_putLongRelease: return inline_unsafe_access( is_store, T_LONG, Release, false);
385 case vmIntrinsics::_putFloatRelease: return inline_unsafe_access( is_store, T_FLOAT, Release, false);
386 case vmIntrinsics::_putDoubleRelease: return inline_unsafe_access( is_store, T_DOUBLE, Release, false);
387
388 case vmIntrinsics::_getReferenceOpaque: return inline_unsafe_access(!is_store, T_OBJECT, Opaque, false);
389 case vmIntrinsics::_getBooleanOpaque: return inline_unsafe_access(!is_store, T_BOOLEAN, Opaque, false);
390 case vmIntrinsics::_getByteOpaque: return inline_unsafe_access(!is_store, T_BYTE, Opaque, false);
391 case vmIntrinsics::_getShortOpaque: return inline_unsafe_access(!is_store, T_SHORT, Opaque, false);
392 case vmIntrinsics::_getCharOpaque: return inline_unsafe_access(!is_store, T_CHAR, Opaque, false);
393 case vmIntrinsics::_getIntOpaque: return inline_unsafe_access(!is_store, T_INT, Opaque, false);
394 case vmIntrinsics::_getLongOpaque: return inline_unsafe_access(!is_store, T_LONG, Opaque, false);
395 case vmIntrinsics::_getFloatOpaque: return inline_unsafe_access(!is_store, T_FLOAT, Opaque, false);
396 case vmIntrinsics::_getDoubleOpaque: return inline_unsafe_access(!is_store, T_DOUBLE, Opaque, false);
397
398 case vmIntrinsics::_putReferenceOpaque: return inline_unsafe_access( is_store, T_OBJECT, Opaque, false);
399 case vmIntrinsics::_putBooleanOpaque: return inline_unsafe_access( is_store, T_BOOLEAN, Opaque, false);
400 case vmIntrinsics::_putByteOpaque: return inline_unsafe_access( is_store, T_BYTE, Opaque, false);
401 case vmIntrinsics::_putShortOpaque: return inline_unsafe_access( is_store, T_SHORT, Opaque, false);
402 case vmIntrinsics::_putCharOpaque: return inline_unsafe_access( is_store, T_CHAR, Opaque, false);
403 case vmIntrinsics::_putIntOpaque: return inline_unsafe_access( is_store, T_INT, Opaque, false);
404 case vmIntrinsics::_putLongOpaque: return inline_unsafe_access( is_store, T_LONG, Opaque, false);
405 case vmIntrinsics::_putFloatOpaque: return inline_unsafe_access( is_store, T_FLOAT, Opaque, false);
406 case vmIntrinsics::_putDoubleOpaque: return inline_unsafe_access( is_store, T_DOUBLE, Opaque, false);
407
408 case vmIntrinsics::_compareAndSetReference: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap, Volatile);
409 case vmIntrinsics::_compareAndSetByte: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap, Volatile);
410 case vmIntrinsics::_compareAndSetShort: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap, Volatile);
411 case vmIntrinsics::_compareAndSetInt: return inline_unsafe_load_store(T_INT, LS_cmp_swap, Volatile);
412 case vmIntrinsics::_compareAndSetLong: return inline_unsafe_load_store(T_LONG, LS_cmp_swap, Volatile);
413
414 case vmIntrinsics::_weakCompareAndSetReferencePlain: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap_weak, Relaxed);
415 case vmIntrinsics::_weakCompareAndSetReferenceAcquire: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap_weak, Acquire);
416 case vmIntrinsics::_weakCompareAndSetReferenceRelease: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap_weak, Release);
417 case vmIntrinsics::_weakCompareAndSetReference: return inline_unsafe_load_store(T_OBJECT, LS_cmp_swap_weak, Volatile);
418 case vmIntrinsics::_weakCompareAndSetBytePlain: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap_weak, Relaxed);
419 case vmIntrinsics::_weakCompareAndSetByteAcquire: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap_weak, Acquire);
420 case vmIntrinsics::_weakCompareAndSetByteRelease: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap_weak, Release);
421 case vmIntrinsics::_weakCompareAndSetByte: return inline_unsafe_load_store(T_BYTE, LS_cmp_swap_weak, Volatile);
422 case vmIntrinsics::_weakCompareAndSetShortPlain: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap_weak, Relaxed);
423 case vmIntrinsics::_weakCompareAndSetShortAcquire: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap_weak, Acquire);
424 case vmIntrinsics::_weakCompareAndSetShortRelease: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap_weak, Release);
425 case vmIntrinsics::_weakCompareAndSetShort: return inline_unsafe_load_store(T_SHORT, LS_cmp_swap_weak, Volatile);
426 case vmIntrinsics::_weakCompareAndSetIntPlain: return inline_unsafe_load_store(T_INT, LS_cmp_swap_weak, Relaxed);
427 case vmIntrinsics::_weakCompareAndSetIntAcquire: return inline_unsafe_load_store(T_INT, LS_cmp_swap_weak, Acquire);
428 case vmIntrinsics::_weakCompareAndSetIntRelease: return inline_unsafe_load_store(T_INT, LS_cmp_swap_weak, Release);
429 case vmIntrinsics::_weakCompareAndSetInt: return inline_unsafe_load_store(T_INT, LS_cmp_swap_weak, Volatile);
430 case vmIntrinsics::_weakCompareAndSetLongPlain: return inline_unsafe_load_store(T_LONG, LS_cmp_swap_weak, Relaxed);
431 case vmIntrinsics::_weakCompareAndSetLongAcquire: return inline_unsafe_load_store(T_LONG, LS_cmp_swap_weak, Acquire);
432 case vmIntrinsics::_weakCompareAndSetLongRelease: return inline_unsafe_load_store(T_LONG, LS_cmp_swap_weak, Release);
433 case vmIntrinsics::_weakCompareAndSetLong: return inline_unsafe_load_store(T_LONG, LS_cmp_swap_weak, Volatile);
434
435 case vmIntrinsics::_compareAndExchangeReference: return inline_unsafe_load_store(T_OBJECT, LS_cmp_exchange, Volatile);
436 case vmIntrinsics::_compareAndExchangeReferenceAcquire: return inline_unsafe_load_store(T_OBJECT, LS_cmp_exchange, Acquire);
437 case vmIntrinsics::_compareAndExchangeReferenceRelease: return inline_unsafe_load_store(T_OBJECT, LS_cmp_exchange, Release);
438 case vmIntrinsics::_compareAndExchangeByte: return inline_unsafe_load_store(T_BYTE, LS_cmp_exchange, Volatile);
439 case vmIntrinsics::_compareAndExchangeByteAcquire: return inline_unsafe_load_store(T_BYTE, LS_cmp_exchange, Acquire);
440 case vmIntrinsics::_compareAndExchangeByteRelease: return inline_unsafe_load_store(T_BYTE, LS_cmp_exchange, Release);
441 case vmIntrinsics::_compareAndExchangeShort: return inline_unsafe_load_store(T_SHORT, LS_cmp_exchange, Volatile);
442 case vmIntrinsics::_compareAndExchangeShortAcquire: return inline_unsafe_load_store(T_SHORT, LS_cmp_exchange, Acquire);
443 case vmIntrinsics::_compareAndExchangeShortRelease: return inline_unsafe_load_store(T_SHORT, LS_cmp_exchange, Release);
444 case vmIntrinsics::_compareAndExchangeInt: return inline_unsafe_load_store(T_INT, LS_cmp_exchange, Volatile);
445 case vmIntrinsics::_compareAndExchangeIntAcquire: return inline_unsafe_load_store(T_INT, LS_cmp_exchange, Acquire);
446 case vmIntrinsics::_compareAndExchangeIntRelease: return inline_unsafe_load_store(T_INT, LS_cmp_exchange, Release);
447 case vmIntrinsics::_compareAndExchangeLong: return inline_unsafe_load_store(T_LONG, LS_cmp_exchange, Volatile);
448 case vmIntrinsics::_compareAndExchangeLongAcquire: return inline_unsafe_load_store(T_LONG, LS_cmp_exchange, Acquire);
449 case vmIntrinsics::_compareAndExchangeLongRelease: return inline_unsafe_load_store(T_LONG, LS_cmp_exchange, Release);
450
451 case vmIntrinsics::_getAndAddByte: return inline_unsafe_load_store(T_BYTE, LS_get_add, Volatile);
452 case vmIntrinsics::_getAndAddShort: return inline_unsafe_load_store(T_SHORT, LS_get_add, Volatile);
453 case vmIntrinsics::_getAndAddInt: return inline_unsafe_load_store(T_INT, LS_get_add, Volatile);
454 case vmIntrinsics::_getAndAddLong: return inline_unsafe_load_store(T_LONG, LS_get_add, Volatile);
455
456 case vmIntrinsics::_getAndSetByte: return inline_unsafe_load_store(T_BYTE, LS_get_set, Volatile);
457 case vmIntrinsics::_getAndSetShort: return inline_unsafe_load_store(T_SHORT, LS_get_set, Volatile);
458 case vmIntrinsics::_getAndSetInt: return inline_unsafe_load_store(T_INT, LS_get_set, Volatile);
459 case vmIntrinsics::_getAndSetLong: return inline_unsafe_load_store(T_LONG, LS_get_set, Volatile);
460 case vmIntrinsics::_getAndSetReference: return inline_unsafe_load_store(T_OBJECT, LS_get_set, Volatile);
461
462 case vmIntrinsics::_loadFence:
463 case vmIntrinsics::_storeFence:
464 case vmIntrinsics::_storeStoreFence:
465 case vmIntrinsics::_fullFence: return inline_unsafe_fence(intrinsic_id());
466
467 case vmIntrinsics::_onSpinWait: return inline_onspinwait();
468
469 case vmIntrinsics::_currentCarrierThread: return inline_native_currentCarrierThread();
470 case vmIntrinsics::_currentThread: return inline_native_currentThread();
471 case vmIntrinsics::_setCurrentThread: return inline_native_setCurrentThread();
472
473 case vmIntrinsics::_scopedValueCache: return inline_native_scopedValueCache();
474 case vmIntrinsics::_setScopedValueCache: return inline_native_setScopedValueCache();
475
476 case vmIntrinsics::_Continuation_pin: return inline_native_Continuation_pinning(false);
477 case vmIntrinsics::_Continuation_unpin: return inline_native_Continuation_pinning(true);
478
479 #if INCLUDE_JVMTI
480 case vmIntrinsics::_notifyJvmtiVThreadStart: return inline_native_notify_jvmti_funcs(CAST_FROM_FN_PTR(address, OptoRuntime::notify_jvmti_vthread_start()),
481 "notifyJvmtiStart", true, false);
482 case vmIntrinsics::_notifyJvmtiVThreadEnd: return inline_native_notify_jvmti_funcs(CAST_FROM_FN_PTR(address, OptoRuntime::notify_jvmti_vthread_end()),
483 "notifyJvmtiEnd", false, true);
484 case vmIntrinsics::_notifyJvmtiVThreadMount: return inline_native_notify_jvmti_funcs(CAST_FROM_FN_PTR(address, OptoRuntime::notify_jvmti_vthread_mount()),
485 "notifyJvmtiMount", false, false);
486 case vmIntrinsics::_notifyJvmtiVThreadUnmount: return inline_native_notify_jvmti_funcs(CAST_FROM_FN_PTR(address, OptoRuntime::notify_jvmti_vthread_unmount()),
487 "notifyJvmtiUnmount", false, false);
488 case vmIntrinsics::_notifyJvmtiVThreadDisableSuspend: return inline_native_notify_jvmti_sync();
489 #endif
490
491 #ifdef JFR_HAVE_INTRINSICS
492 case vmIntrinsics::_counterTime: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, JfrTime::time_function()), "counterTime");
493 case vmIntrinsics::_getEventWriter: return inline_native_getEventWriter();
494 case vmIntrinsics::_jvm_commit: return inline_native_jvm_commit();
495 #endif
496 case vmIntrinsics::_currentTimeMillis: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeMillis), "currentTimeMillis");
497 case vmIntrinsics::_nanoTime: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeNanos), "nanoTime");
498 case vmIntrinsics::_writeback0: return inline_unsafe_writeback0();
499 case vmIntrinsics::_writebackPreSync0: return inline_unsafe_writebackSync0(true);
500 case vmIntrinsics::_writebackPostSync0: return inline_unsafe_writebackSync0(false);
501 case vmIntrinsics::_allocateInstance: return inline_unsafe_allocate();
502 case vmIntrinsics::_copyMemory: return inline_unsafe_copyMemory();
503 case vmIntrinsics::_setMemory: return inline_unsafe_setMemory();
504 case vmIntrinsics::_getLength: return inline_native_getLength();
505 case vmIntrinsics::_copyOf: return inline_array_copyOf(false);
506 case vmIntrinsics::_copyOfRange: return inline_array_copyOf(true);
507 case vmIntrinsics::_equalsB: return inline_array_equals(StrIntrinsicNode::LL);
508 case vmIntrinsics::_equalsC: return inline_array_equals(StrIntrinsicNode::UU);
509 case vmIntrinsics::_Preconditions_checkIndex: return inline_preconditions_checkIndex(T_INT);
510 case vmIntrinsics::_Preconditions_checkLongIndex: return inline_preconditions_checkIndex(T_LONG);
511 case vmIntrinsics::_clone: return inline_native_clone(intrinsic()->is_virtual());
512
513 case vmIntrinsics::_allocateUninitializedArray: return inline_unsafe_newArray(true);
514 case vmIntrinsics::_newArray: return inline_unsafe_newArray(false);
515
516 case vmIntrinsics::_isAssignableFrom: return inline_native_subtype_check();
517
518 case vmIntrinsics::_isInstance:
519 case vmIntrinsics::_isHidden:
520 case vmIntrinsics::_getSuperclass:
521 case vmIntrinsics::_getClassAccessFlags: return inline_native_Class_query(intrinsic_id());
522
523 case vmIntrinsics::_floatToRawIntBits:
524 case vmIntrinsics::_floatToIntBits:
525 case vmIntrinsics::_intBitsToFloat:
526 case vmIntrinsics::_doubleToRawLongBits:
527 case vmIntrinsics::_doubleToLongBits:
528 case vmIntrinsics::_longBitsToDouble:
529 case vmIntrinsics::_floatToFloat16:
530 case vmIntrinsics::_float16ToFloat: return inline_fp_conversions(intrinsic_id());
531 case vmIntrinsics::_sqrt_float16: return inline_fp16_operations(intrinsic_id(), 1);
532 case vmIntrinsics::_fma_float16: return inline_fp16_operations(intrinsic_id(), 3);
533 case vmIntrinsics::_floatIsFinite:
534 case vmIntrinsics::_floatIsInfinite:
535 case vmIntrinsics::_doubleIsFinite:
536 case vmIntrinsics::_doubleIsInfinite: return inline_fp_range_check(intrinsic_id());
537
538 case vmIntrinsics::_numberOfLeadingZeros_i:
539 case vmIntrinsics::_numberOfLeadingZeros_l:
540 case vmIntrinsics::_numberOfTrailingZeros_i:
541 case vmIntrinsics::_numberOfTrailingZeros_l:
542 case vmIntrinsics::_bitCount_i:
543 case vmIntrinsics::_bitCount_l:
544 case vmIntrinsics::_reverse_i:
545 case vmIntrinsics::_reverse_l:
546 case vmIntrinsics::_reverseBytes_i:
547 case vmIntrinsics::_reverseBytes_l:
548 case vmIntrinsics::_reverseBytes_s:
549 case vmIntrinsics::_reverseBytes_c: return inline_number_methods(intrinsic_id());
550
551 case vmIntrinsics::_compress_i:
552 case vmIntrinsics::_compress_l:
553 case vmIntrinsics::_expand_i:
554 case vmIntrinsics::_expand_l: return inline_bitshuffle_methods(intrinsic_id());
555
556 case vmIntrinsics::_compareUnsigned_i:
557 case vmIntrinsics::_compareUnsigned_l: return inline_compare_unsigned(intrinsic_id());
558
559 case vmIntrinsics::_divideUnsigned_i:
560 case vmIntrinsics::_divideUnsigned_l:
561 case vmIntrinsics::_remainderUnsigned_i:
562 case vmIntrinsics::_remainderUnsigned_l: return inline_divmod_methods(intrinsic_id());
563
564 case vmIntrinsics::_getCallerClass: return inline_native_Reflection_getCallerClass();
565
566 case vmIntrinsics::_Reference_get: return inline_reference_get();
567 case vmIntrinsics::_Reference_refersTo0: return inline_reference_refersTo0(false);
568 case vmIntrinsics::_PhantomReference_refersTo0: return inline_reference_refersTo0(true);
569 case vmIntrinsics::_Reference_clear0: return inline_reference_clear0(false);
570 case vmIntrinsics::_PhantomReference_clear0: return inline_reference_clear0(true);
571
572 case vmIntrinsics::_Class_cast: return inline_Class_cast();
573
574 case vmIntrinsics::_aescrypt_encryptBlock:
575 case vmIntrinsics::_aescrypt_decryptBlock: return inline_aescrypt_Block(intrinsic_id());
576
577 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt:
578 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt:
579 return inline_cipherBlockChaining_AESCrypt(intrinsic_id());
580
581 case vmIntrinsics::_electronicCodeBook_encryptAESCrypt:
582 case vmIntrinsics::_electronicCodeBook_decryptAESCrypt:
583 return inline_electronicCodeBook_AESCrypt(intrinsic_id());
584
585 case vmIntrinsics::_counterMode_AESCrypt:
586 return inline_counterMode_AESCrypt(intrinsic_id());
587
588 case vmIntrinsics::_galoisCounterMode_AESCrypt:
589 return inline_galoisCounterMode_AESCrypt();
590
591 case vmIntrinsics::_md5_implCompress:
592 case vmIntrinsics::_sha_implCompress:
593 case vmIntrinsics::_sha2_implCompress:
594 case vmIntrinsics::_sha5_implCompress:
595 case vmIntrinsics::_sha3_implCompress:
596 return inline_digestBase_implCompress(intrinsic_id());
597 case vmIntrinsics::_double_keccak:
598 return inline_double_keccak();
599
600 case vmIntrinsics::_digestBase_implCompressMB:
601 return inline_digestBase_implCompressMB(predicate);
602
603 case vmIntrinsics::_multiplyToLen:
604 return inline_multiplyToLen();
605
606 case vmIntrinsics::_squareToLen:
607 return inline_squareToLen();
608
609 case vmIntrinsics::_mulAdd:
610 return inline_mulAdd();
611
612 case vmIntrinsics::_montgomeryMultiply:
613 return inline_montgomeryMultiply();
614 case vmIntrinsics::_montgomerySquare:
615 return inline_montgomerySquare();
616
617 case vmIntrinsics::_bigIntegerRightShiftWorker:
618 return inline_bigIntegerShift(true);
619 case vmIntrinsics::_bigIntegerLeftShiftWorker:
620 return inline_bigIntegerShift(false);
621
622 case vmIntrinsics::_vectorizedMismatch:
623 return inline_vectorizedMismatch();
624
625 case vmIntrinsics::_ghash_processBlocks:
626 return inline_ghash_processBlocks();
627 case vmIntrinsics::_chacha20Block:
628 return inline_chacha20Block();
629 case vmIntrinsics::_dilithiumAlmostNtt:
630 return inline_dilithiumAlmostNtt();
631 case vmIntrinsics::_dilithiumAlmostInverseNtt:
632 return inline_dilithiumAlmostInverseNtt();
633 case vmIntrinsics::_dilithiumNttMult:
634 return inline_dilithiumNttMult();
635 case vmIntrinsics::_dilithiumMontMulByConstant:
636 return inline_dilithiumMontMulByConstant();
637 case vmIntrinsics::_dilithiumDecomposePoly:
638 return inline_dilithiumDecomposePoly();
639 case vmIntrinsics::_base64_encodeBlock:
640 return inline_base64_encodeBlock();
641 case vmIntrinsics::_base64_decodeBlock:
642 return inline_base64_decodeBlock();
643 case vmIntrinsics::_poly1305_processBlocks:
644 return inline_poly1305_processBlocks();
645 case vmIntrinsics::_intpoly_montgomeryMult_P256:
646 return inline_intpoly_montgomeryMult_P256();
647 case vmIntrinsics::_intpoly_assign:
648 return inline_intpoly_assign();
649 case vmIntrinsics::_encodeISOArray:
650 case vmIntrinsics::_encodeByteISOArray:
651 return inline_encodeISOArray(false);
652 case vmIntrinsics::_encodeAsciiArray:
653 return inline_encodeISOArray(true);
654
655 case vmIntrinsics::_updateCRC32:
656 return inline_updateCRC32();
657 case vmIntrinsics::_updateBytesCRC32:
658 return inline_updateBytesCRC32();
659 case vmIntrinsics::_updateByteBufferCRC32:
660 return inline_updateByteBufferCRC32();
661
662 case vmIntrinsics::_updateBytesCRC32C:
663 return inline_updateBytesCRC32C();
664 case vmIntrinsics::_updateDirectByteBufferCRC32C:
665 return inline_updateDirectByteBufferCRC32C();
666
667 case vmIntrinsics::_updateBytesAdler32:
668 return inline_updateBytesAdler32();
669 case vmIntrinsics::_updateByteBufferAdler32:
670 return inline_updateByteBufferAdler32();
671
672 case vmIntrinsics::_profileBoolean:
673 return inline_profileBoolean();
674 case vmIntrinsics::_isCompileConstant:
675 return inline_isCompileConstant();
676
677 case vmIntrinsics::_countPositives:
678 return inline_countPositives();
679
680 case vmIntrinsics::_fmaD:
681 case vmIntrinsics::_fmaF:
682 return inline_fma(intrinsic_id());
683
684 case vmIntrinsics::_isDigit:
685 case vmIntrinsics::_isLowerCase:
686 case vmIntrinsics::_isUpperCase:
687 case vmIntrinsics::_isWhitespace:
688 return inline_character_compare(intrinsic_id());
689
690 case vmIntrinsics::_min:
691 case vmIntrinsics::_max:
692 case vmIntrinsics::_min_strict:
693 case vmIntrinsics::_max_strict:
694 case vmIntrinsics::_minL:
695 case vmIntrinsics::_maxL:
696 case vmIntrinsics::_minF:
697 case vmIntrinsics::_maxF:
698 case vmIntrinsics::_minD:
699 case vmIntrinsics::_maxD:
700 case vmIntrinsics::_minF_strict:
701 case vmIntrinsics::_maxF_strict:
702 case vmIntrinsics::_minD_strict:
703 case vmIntrinsics::_maxD_strict:
704 return inline_min_max(intrinsic_id());
705
706 case vmIntrinsics::_VectorUnaryOp:
707 return inline_vector_nary_operation(1);
708 case vmIntrinsics::_VectorBinaryOp:
709 return inline_vector_nary_operation(2);
710 case vmIntrinsics::_VectorTernaryOp:
711 return inline_vector_nary_operation(3);
712 case vmIntrinsics::_VectorFromBitsCoerced:
713 return inline_vector_frombits_coerced();
714 case vmIntrinsics::_VectorMaskOp:
715 return inline_vector_mask_operation();
716 case vmIntrinsics::_VectorLoadOp:
717 return inline_vector_mem_operation(/*is_store=*/false);
718 case vmIntrinsics::_VectorLoadMaskedOp:
719 return inline_vector_mem_masked_operation(/*is_store*/false);
720 case vmIntrinsics::_VectorStoreOp:
721 return inline_vector_mem_operation(/*is_store=*/true);
722 case vmIntrinsics::_VectorStoreMaskedOp:
723 return inline_vector_mem_masked_operation(/*is_store=*/true);
724 case vmIntrinsics::_VectorGatherOp:
725 return inline_vector_gather_scatter(/*is_scatter*/ false);
726 case vmIntrinsics::_VectorScatterOp:
727 return inline_vector_gather_scatter(/*is_scatter*/ true);
728 case vmIntrinsics::_VectorReductionCoerced:
729 return inline_vector_reduction();
730 case vmIntrinsics::_VectorTest:
731 return inline_vector_test();
732 case vmIntrinsics::_VectorBlend:
733 return inline_vector_blend();
734 case vmIntrinsics::_VectorRearrange:
735 return inline_vector_rearrange();
736 case vmIntrinsics::_VectorSelectFrom:
737 return inline_vector_select_from();
738 case vmIntrinsics::_VectorCompare:
739 return inline_vector_compare();
740 case vmIntrinsics::_VectorBroadcastInt:
741 return inline_vector_broadcast_int();
742 case vmIntrinsics::_VectorConvert:
743 return inline_vector_convert();
744 case vmIntrinsics::_VectorInsert:
745 return inline_vector_insert();
746 case vmIntrinsics::_VectorExtract:
747 return inline_vector_extract();
748 case vmIntrinsics::_VectorCompressExpand:
749 return inline_vector_compress_expand();
750 case vmIntrinsics::_VectorSelectFromTwoVectorOp:
751 return inline_vector_select_from_two_vectors();
752 case vmIntrinsics::_IndexVector:
753 return inline_index_vector();
754 case vmIntrinsics::_IndexPartiallyInUpperRange:
755 return inline_index_partially_in_upper_range();
756
757 case vmIntrinsics::_getObjectSize:
758 return inline_getObjectSize();
759
760 case vmIntrinsics::_blackhole:
761 return inline_blackhole();
762
763 default:
764 // If you get here, it may be that someone has added a new intrinsic
765 // to the list in vmIntrinsics.hpp without implementing it here.
766 #ifndef PRODUCT
767 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) {
768 tty->print_cr("*** Warning: Unimplemented intrinsic %s(%d)",
769 vmIntrinsics::name_at(intrinsic_id()), vmIntrinsics::as_int(intrinsic_id()));
770 }
771 #endif
772 return false;
773 }
774 }
775
776 Node* LibraryCallKit::try_to_predicate(int predicate) {
777 if (!jvms()->has_method()) {
778 // Root JVMState has a null method.
779 assert(map()->memory()->Opcode() == Op_Parm, "");
780 // Insert the memory aliasing node
781 set_all_memory(reset_memory());
782 }
783 assert(merged_memory(), "");
784
785 switch (intrinsic_id()) {
786 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt:
787 return inline_cipherBlockChaining_AESCrypt_predicate(false);
788 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt:
789 return inline_cipherBlockChaining_AESCrypt_predicate(true);
790 case vmIntrinsics::_electronicCodeBook_encryptAESCrypt:
791 return inline_electronicCodeBook_AESCrypt_predicate(false);
792 case vmIntrinsics::_electronicCodeBook_decryptAESCrypt:
793 return inline_electronicCodeBook_AESCrypt_predicate(true);
794 case vmIntrinsics::_counterMode_AESCrypt:
795 return inline_counterMode_AESCrypt_predicate();
796 case vmIntrinsics::_digestBase_implCompressMB:
797 return inline_digestBase_implCompressMB_predicate(predicate);
798 case vmIntrinsics::_galoisCounterMode_AESCrypt:
799 return inline_galoisCounterMode_AESCrypt_predicate();
800
801 default:
802 // If you get here, it may be that someone has added a new intrinsic
803 // to the list in vmIntrinsics.hpp without implementing it here.
804 #ifndef PRODUCT
805 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) {
806 tty->print_cr("*** Warning: Unimplemented predicate for intrinsic %s(%d)",
807 vmIntrinsics::name_at(intrinsic_id()), vmIntrinsics::as_int(intrinsic_id()));
808 }
809 #endif
810 Node* slow_ctl = control();
811 set_control(top()); // No fast path intrinsic
812 return slow_ctl;
813 }
814 }
815
816 //------------------------------set_result-------------------------------
817 // Helper function for finishing intrinsics.
818 void LibraryCallKit::set_result(RegionNode* region, PhiNode* value) {
819 record_for_igvn(region);
820 set_control(_gvn.transform(region));
821 set_result( _gvn.transform(value));
822 assert(value->type()->basic_type() == result()->bottom_type()->basic_type(), "sanity");
823 }
824
825 //------------------------------generate_guard---------------------------
826 // Helper function for generating guarded fast-slow graph structures.
827 // The given 'test', if true, guards a slow path. If the test fails
828 // then a fast path can be taken. (We generally hope it fails.)
829 // In all cases, GraphKit::control() is updated to the fast path.
830 // The returned value represents the control for the slow path.
831 // The return value is never 'top'; it is either a valid control
832 // or null if it is obvious that the slow path can never be taken.
833 // Also, if region and the slow control are not null, the slow edge
834 // is appended to the region.
835 Node* LibraryCallKit::generate_guard(Node* test, RegionNode* region, float true_prob) {
836 if (stopped()) {
837 // Already short circuited.
838 return nullptr;
839 }
840
841 // Build an if node and its projections.
842 // If test is true we take the slow path, which we assume is uncommon.
843 if (_gvn.type(test) == TypeInt::ZERO) {
844 // The slow branch is never taken. No need to build this guard.
845 return nullptr;
846 }
847
848 IfNode* iff = create_and_map_if(control(), test, true_prob, COUNT_UNKNOWN);
849
850 Node* if_slow = _gvn.transform(new IfTrueNode(iff));
851 if (if_slow == top()) {
852 // The slow branch is never taken. No need to build this guard.
853 return nullptr;
854 }
855
856 if (region != nullptr)
857 region->add_req(if_slow);
858
859 Node* if_fast = _gvn.transform(new IfFalseNode(iff));
860 set_control(if_fast);
861
862 return if_slow;
863 }
864
865 inline Node* LibraryCallKit::generate_slow_guard(Node* test, RegionNode* region) {
866 return generate_guard(test, region, PROB_UNLIKELY_MAG(3));
867 }
868 inline Node* LibraryCallKit::generate_fair_guard(Node* test, RegionNode* region) {
869 return generate_guard(test, region, PROB_FAIR);
870 }
871
872 inline Node* LibraryCallKit::generate_negative_guard(Node* index, RegionNode* region,
873 Node* *pos_index) {
874 if (stopped())
875 return nullptr; // already stopped
876 if (_gvn.type(index)->higher_equal(TypeInt::POS)) // [0,maxint]
877 return nullptr; // index is already adequately typed
878 Node* cmp_lt = _gvn.transform(new CmpINode(index, intcon(0)));
879 Node* bol_lt = _gvn.transform(new BoolNode(cmp_lt, BoolTest::lt));
880 Node* is_neg = generate_guard(bol_lt, region, PROB_MIN);
881 if (is_neg != nullptr && pos_index != nullptr) {
882 // Emulate effect of Parse::adjust_map_after_if.
883 Node* ccast = new CastIINode(control(), index, TypeInt::POS);
884 (*pos_index) = _gvn.transform(ccast);
885 }
886 return is_neg;
887 }
888
889 // Make sure that 'position' is a valid limit index, in [0..length].
890 // There are two equivalent plans for checking this:
891 // A. (offset + copyLength) unsigned<= arrayLength
892 // B. offset <= (arrayLength - copyLength)
893 // We require that all of the values above, except for the sum and
894 // difference, are already known to be non-negative.
895 // Plan A is robust in the face of overflow, if offset and copyLength
896 // are both hugely positive.
897 //
898 // Plan B is less direct and intuitive, but it does not overflow at
899 // all, since the difference of two non-negatives is always
900 // representable. Whenever Java methods must perform the equivalent
901 // check they generally use Plan B instead of Plan A.
902 // For the moment we use Plan A.
903 inline Node* LibraryCallKit::generate_limit_guard(Node* offset,
904 Node* subseq_length,
905 Node* array_length,
906 RegionNode* region) {
907 if (stopped())
908 return nullptr; // already stopped
909 bool zero_offset = _gvn.type(offset) == TypeInt::ZERO;
910 if (zero_offset && subseq_length->eqv_uncast(array_length))
911 return nullptr; // common case of whole-array copy
912 Node* last = subseq_length;
913 if (!zero_offset) // last += offset
914 last = _gvn.transform(new AddINode(last, offset));
915 Node* cmp_lt = _gvn.transform(new CmpUNode(array_length, last));
916 Node* bol_lt = _gvn.transform(new BoolNode(cmp_lt, BoolTest::lt));
917 Node* is_over = generate_guard(bol_lt, region, PROB_MIN);
918 return is_over;
919 }
920
921 // Emit range checks for the given String.value byte array
922 void LibraryCallKit::generate_string_range_check(Node* array, Node* offset, Node* count, bool char_count) {
923 if (stopped()) {
924 return; // already stopped
925 }
926 RegionNode* bailout = new RegionNode(1);
927 record_for_igvn(bailout);
928 if (char_count) {
929 // Convert char count to byte count
930 count = _gvn.transform(new LShiftINode(count, intcon(1)));
931 }
932
933 // Offset and count must not be negative
934 generate_negative_guard(offset, bailout);
935 generate_negative_guard(count, bailout);
936 // Offset + count must not exceed length of array
937 generate_limit_guard(offset, count, load_array_length(array), bailout);
938
939 if (bailout->req() > 1) {
940 PreserveJVMState pjvms(this);
941 set_control(_gvn.transform(bailout));
942 uncommon_trap(Deoptimization::Reason_intrinsic,
943 Deoptimization::Action_maybe_recompile);
944 }
945 }
946
947 Node* LibraryCallKit::current_thread_helper(Node*& tls_output, ByteSize handle_offset,
948 bool is_immutable) {
949 ciKlass* thread_klass = env()->Thread_klass();
950 const Type* thread_type
951 = TypeOopPtr::make_from_klass(thread_klass)->cast_to_ptr_type(TypePtr::NotNull);
952
953 Node* thread = _gvn.transform(new ThreadLocalNode());
954 Node* p = basic_plus_adr(top()/*!oop*/, thread, in_bytes(handle_offset));
955 tls_output = thread;
956
957 Node* thread_obj_handle
958 = (is_immutable
959 ? LoadNode::make(_gvn, nullptr, immutable_memory(), p, p->bottom_type()->is_ptr(),
960 TypeRawPtr::NOTNULL, T_ADDRESS, MemNode::unordered)
961 : make_load(nullptr, p, p->bottom_type()->is_ptr(), T_ADDRESS, MemNode::unordered));
962 thread_obj_handle = _gvn.transform(thread_obj_handle);
963
964 DecoratorSet decorators = IN_NATIVE;
965 if (is_immutable) {
966 decorators |= C2_IMMUTABLE_MEMORY;
967 }
968 return access_load(thread_obj_handle, thread_type, T_OBJECT, decorators);
969 }
970
971 //--------------------------generate_current_thread--------------------
972 Node* LibraryCallKit::generate_current_thread(Node* &tls_output) {
973 return current_thread_helper(tls_output, JavaThread::threadObj_offset(),
974 /*is_immutable*/false);
975 }
976
977 //--------------------------generate_virtual_thread--------------------
978 Node* LibraryCallKit::generate_virtual_thread(Node* tls_output) {
979 return current_thread_helper(tls_output, JavaThread::vthread_offset(),
980 !C->method()->changes_current_thread());
981 }
982
983 //------------------------------make_string_method_node------------------------
984 // Helper method for String intrinsic functions. This version is called with
985 // str1 and str2 pointing to byte[] nodes containing Latin1 or UTF16 encoded
986 // characters (depending on 'is_byte'). cnt1 and cnt2 are pointing to Int nodes
987 // containing the lengths of str1 and str2.
988 Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2, StrIntrinsicNode::ArgEnc ae) {
989 Node* result = nullptr;
990 switch (opcode) {
991 case Op_StrIndexOf:
992 result = new StrIndexOfNode(control(), memory(TypeAryPtr::BYTES),
993 str1_start, cnt1, str2_start, cnt2, ae);
994 break;
995 case Op_StrComp:
996 result = new StrCompNode(control(), memory(TypeAryPtr::BYTES),
997 str1_start, cnt1, str2_start, cnt2, ae);
998 break;
999 case Op_StrEquals:
1000 // We already know that cnt1 == cnt2 here (checked in 'inline_string_equals').
1001 // Use the constant length if there is one because optimized match rule may exist.
1002 result = new StrEqualsNode(control(), memory(TypeAryPtr::BYTES),
1003 str1_start, str2_start, cnt2->is_Con() ? cnt2 : cnt1, ae);
1004 break;
1005 default:
1006 ShouldNotReachHere();
1007 return nullptr;
1008 }
1009
1010 // All these intrinsics have checks.
1011 C->set_has_split_ifs(true); // Has chance for split-if optimization
1012 clear_upper_avx();
1013
1014 return _gvn.transform(result);
1015 }
1016
1017 //------------------------------inline_string_compareTo------------------------
1018 bool LibraryCallKit::inline_string_compareTo(StrIntrinsicNode::ArgEnc ae) {
1019 Node* arg1 = argument(0);
1020 Node* arg2 = argument(1);
1021
1022 arg1 = must_be_not_null(arg1, true);
1023 arg2 = must_be_not_null(arg2, true);
1024
1025 // Get start addr and length of first argument
1026 Node* arg1_start = array_element_address(arg1, intcon(0), T_BYTE);
1027 Node* arg1_cnt = load_array_length(arg1);
1028
1029 // Get start addr and length of second argument
1030 Node* arg2_start = array_element_address(arg2, intcon(0), T_BYTE);
1031 Node* arg2_cnt = load_array_length(arg2);
1032
1033 Node* result = make_string_method_node(Op_StrComp, arg1_start, arg1_cnt, arg2_start, arg2_cnt, ae);
1034 set_result(result);
1035 return true;
1036 }
1037
1038 //------------------------------inline_string_equals------------------------
1039 bool LibraryCallKit::inline_string_equals(StrIntrinsicNode::ArgEnc ae) {
1040 Node* arg1 = argument(0);
1041 Node* arg2 = argument(1);
1042
1043 // paths (plus control) merge
1044 RegionNode* region = new RegionNode(3);
1045 Node* phi = new PhiNode(region, TypeInt::BOOL);
1046
1047 if (!stopped()) {
1048
1049 arg1 = must_be_not_null(arg1, true);
1050 arg2 = must_be_not_null(arg2, true);
1051
1052 // Get start addr and length of first argument
1053 Node* arg1_start = array_element_address(arg1, intcon(0), T_BYTE);
1054 Node* arg1_cnt = load_array_length(arg1);
1055
1056 // Get start addr and length of second argument
1057 Node* arg2_start = array_element_address(arg2, intcon(0), T_BYTE);
1058 Node* arg2_cnt = load_array_length(arg2);
1059
1060 // Check for arg1_cnt != arg2_cnt
1061 Node* cmp = _gvn.transform(new CmpINode(arg1_cnt, arg2_cnt));
1062 Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::ne));
1063 Node* if_ne = generate_slow_guard(bol, nullptr);
1064 if (if_ne != nullptr) {
1065 phi->init_req(2, intcon(0));
1066 region->init_req(2, if_ne);
1067 }
1068
1069 // Check for count == 0 is done by assembler code for StrEquals.
1070
1071 if (!stopped()) {
1072 Node* equals = make_string_method_node(Op_StrEquals, arg1_start, arg1_cnt, arg2_start, arg2_cnt, ae);
1073 phi->init_req(1, equals);
1074 region->init_req(1, control());
1075 }
1076 }
1077
1078 // post merge
1079 set_control(_gvn.transform(region));
1080 record_for_igvn(region);
1081
1082 set_result(_gvn.transform(phi));
1083 return true;
1084 }
1085
1086 //------------------------------inline_array_equals----------------------------
1087 bool LibraryCallKit::inline_array_equals(StrIntrinsicNode::ArgEnc ae) {
1088 assert(ae == StrIntrinsicNode::UU || ae == StrIntrinsicNode::LL, "unsupported array types");
1089 Node* arg1 = argument(0);
1090 Node* arg2 = argument(1);
1091
1092 const TypeAryPtr* mtype = (ae == StrIntrinsicNode::UU) ? TypeAryPtr::CHARS : TypeAryPtr::BYTES;
1093 set_result(_gvn.transform(new AryEqNode(control(), memory(mtype), arg1, arg2, ae)));
1094 clear_upper_avx();
1095
1096 return true;
1097 }
1098
1099
1100 //------------------------------inline_countPositives------------------------------
1101 bool LibraryCallKit::inline_countPositives() {
1102 if (too_many_traps(Deoptimization::Reason_intrinsic)) {
1103 return false;
1104 }
1105
1106 assert(callee()->signature()->size() == 3, "countPositives has 3 parameters");
1107 // no receiver since it is static method
1108 Node* ba = argument(0);
1109 Node* offset = argument(1);
1110 Node* len = argument(2);
1111
1112 ba = must_be_not_null(ba, true);
1113
1114 // Range checks
1115 generate_string_range_check(ba, offset, len, false);
1116 if (stopped()) {
1117 return true;
1118 }
1119 Node* ba_start = array_element_address(ba, offset, T_BYTE);
1120 Node* result = new CountPositivesNode(control(), memory(TypeAryPtr::BYTES), ba_start, len);
1121 set_result(_gvn.transform(result));
1122 clear_upper_avx();
1123 return true;
1124 }
1125
1126 bool LibraryCallKit::inline_preconditions_checkIndex(BasicType bt) {
1127 Node* index = argument(0);
1128 Node* length = bt == T_INT ? argument(1) : argument(2);
1129 if (too_many_traps(Deoptimization::Reason_intrinsic) || too_many_traps(Deoptimization::Reason_range_check)) {
1130 return false;
1131 }
1132
1133 // check that length is positive
1134 Node* len_pos_cmp = _gvn.transform(CmpNode::make(length, integercon(0, bt), bt));
1135 Node* len_pos_bol = _gvn.transform(new BoolNode(len_pos_cmp, BoolTest::ge));
1136
1137 {
1138 BuildCutout unless(this, len_pos_bol, PROB_MAX);
1139 uncommon_trap(Deoptimization::Reason_intrinsic,
1140 Deoptimization::Action_make_not_entrant);
1141 }
1142
1143 if (stopped()) {
1144 // Length is known to be always negative during compilation and the IR graph so far constructed is good so return success
1145 return true;
1146 }
1147
1148 // length is now known positive, add a cast node to make this explicit
1149 jlong upper_bound = _gvn.type(length)->is_integer(bt)->hi_as_long();
1150 Node* casted_length = ConstraintCastNode::make_cast_for_basic_type(
1151 control(), length, TypeInteger::make(0, upper_bound, Type::WidenMax, bt),
1152 ConstraintCastNode::RegularDependency, bt);
1153 casted_length = _gvn.transform(casted_length);
1154 replace_in_map(length, casted_length);
1155 length = casted_length;
1156
1157 // Use an unsigned comparison for the range check itself
1158 Node* rc_cmp = _gvn.transform(CmpNode::make(index, length, bt, true));
1159 BoolTest::mask btest = BoolTest::lt;
1160 Node* rc_bool = _gvn.transform(new BoolNode(rc_cmp, btest));
1161 RangeCheckNode* rc = new RangeCheckNode(control(), rc_bool, PROB_MAX, COUNT_UNKNOWN);
1162 _gvn.set_type(rc, rc->Value(&_gvn));
1163 if (!rc_bool->is_Con()) {
1164 record_for_igvn(rc);
1165 }
1166 set_control(_gvn.transform(new IfTrueNode(rc)));
1167 {
1168 PreserveJVMState pjvms(this);
1169 set_control(_gvn.transform(new IfFalseNode(rc)));
1170 uncommon_trap(Deoptimization::Reason_range_check,
1171 Deoptimization::Action_make_not_entrant);
1172 }
1173
1174 if (stopped()) {
1175 // Range check is known to always fail during compilation and the IR graph so far constructed is good so return success
1176 return true;
1177 }
1178
1179 // index is now known to be >= 0 and < length, cast it
1180 Node* result = ConstraintCastNode::make_cast_for_basic_type(
1181 control(), index, TypeInteger::make(0, upper_bound, Type::WidenMax, bt),
1182 ConstraintCastNode::RegularDependency, bt);
1183 result = _gvn.transform(result);
1184 set_result(result);
1185 replace_in_map(index, result);
1186 return true;
1187 }
1188
1189 //------------------------------inline_string_indexOf------------------------
1190 bool LibraryCallKit::inline_string_indexOf(StrIntrinsicNode::ArgEnc ae) {
1191 if (!Matcher::match_rule_supported(Op_StrIndexOf)) {
1192 return false;
1193 }
1194 Node* src = argument(0);
1195 Node* tgt = argument(1);
1196
1197 // Make the merge point
1198 RegionNode* result_rgn = new RegionNode(4);
1199 Node* result_phi = new PhiNode(result_rgn, TypeInt::INT);
1200
1201 src = must_be_not_null(src, true);
1202 tgt = must_be_not_null(tgt, true);
1203
1204 // Get start addr and length of source string
1205 Node* src_start = array_element_address(src, intcon(0), T_BYTE);
1206 Node* src_count = load_array_length(src);
1207
1208 // Get start addr and length of substring
1209 Node* tgt_start = array_element_address(tgt, intcon(0), T_BYTE);
1210 Node* tgt_count = load_array_length(tgt);
1211
1212 Node* result = nullptr;
1213 bool call_opt_stub = (StubRoutines::_string_indexof_array[ae] != nullptr);
1214
1215 if (ae == StrIntrinsicNode::UU || ae == StrIntrinsicNode::UL) {
1216 // Divide src size by 2 if String is UTF16 encoded
1217 src_count = _gvn.transform(new RShiftINode(src_count, intcon(1)));
1218 }
1219 if (ae == StrIntrinsicNode::UU) {
1220 // Divide substring size by 2 if String is UTF16 encoded
1221 tgt_count = _gvn.transform(new RShiftINode(tgt_count, intcon(1)));
1222 }
1223
1224 if (call_opt_stub) {
1225 Node* call = make_runtime_call(RC_LEAF, OptoRuntime::string_IndexOf_Type(),
1226 StubRoutines::_string_indexof_array[ae],
1227 "stringIndexOf", TypePtr::BOTTOM, src_start,
1228 src_count, tgt_start, tgt_count);
1229 result = _gvn.transform(new ProjNode(call, TypeFunc::Parms));
1230 } else {
1231 result = make_indexOf_node(src_start, src_count, tgt_start, tgt_count,
1232 result_rgn, result_phi, ae);
1233 }
1234 if (result != nullptr) {
1235 result_phi->init_req(3, result);
1236 result_rgn->init_req(3, control());
1237 }
1238 set_control(_gvn.transform(result_rgn));
1239 record_for_igvn(result_rgn);
1240 set_result(_gvn.transform(result_phi));
1241
1242 return true;
1243 }
1244
1245 //-----------------------------inline_string_indexOfI-----------------------
1246 bool LibraryCallKit::inline_string_indexOfI(StrIntrinsicNode::ArgEnc ae) {
1247 if (too_many_traps(Deoptimization::Reason_intrinsic)) {
1248 return false;
1249 }
1250 if (!Matcher::match_rule_supported(Op_StrIndexOf)) {
1251 return false;
1252 }
1253
1254 assert(callee()->signature()->size() == 5, "String.indexOf() has 5 arguments");
1255 Node* src = argument(0); // byte[]
1256 Node* src_count = argument(1); // char count
1257 Node* tgt = argument(2); // byte[]
1258 Node* tgt_count = argument(3); // char count
1259 Node* from_index = argument(4); // char index
1260
1261 src = must_be_not_null(src, true);
1262 tgt = must_be_not_null(tgt, true);
1263
1264 // Multiply byte array index by 2 if String is UTF16 encoded
1265 Node* src_offset = (ae == StrIntrinsicNode::LL) ? from_index : _gvn.transform(new LShiftINode(from_index, intcon(1)));
1266 src_count = _gvn.transform(new SubINode(src_count, from_index));
1267 Node* src_start = array_element_address(src, src_offset, T_BYTE);
1268 Node* tgt_start = array_element_address(tgt, intcon(0), T_BYTE);
1269
1270 // Range checks
1271 generate_string_range_check(src, src_offset, src_count, ae != StrIntrinsicNode::LL);
1272 generate_string_range_check(tgt, intcon(0), tgt_count, ae == StrIntrinsicNode::UU);
1273 if (stopped()) {
1274 return true;
1275 }
1276
1277 RegionNode* region = new RegionNode(5);
1278 Node* phi = new PhiNode(region, TypeInt::INT);
1279 Node* result = nullptr;
1280
1281 bool call_opt_stub = (StubRoutines::_string_indexof_array[ae] != nullptr);
1282
1283 if (call_opt_stub) {
1284 Node* call = make_runtime_call(RC_LEAF, OptoRuntime::string_IndexOf_Type(),
1285 StubRoutines::_string_indexof_array[ae],
1286 "stringIndexOf", TypePtr::BOTTOM, src_start,
1287 src_count, tgt_start, tgt_count);
1288 result = _gvn.transform(new ProjNode(call, TypeFunc::Parms));
1289 } else {
1290 result = make_indexOf_node(src_start, src_count, tgt_start, tgt_count,
1291 region, phi, ae);
1292 }
1293 if (result != nullptr) {
1294 // The result is index relative to from_index if substring was found, -1 otherwise.
1295 // Generate code which will fold into cmove.
1296 Node* cmp = _gvn.transform(new CmpINode(result, intcon(0)));
1297 Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::lt));
1298
1299 Node* if_lt = generate_slow_guard(bol, nullptr);
1300 if (if_lt != nullptr) {
1301 // result == -1
1302 phi->init_req(3, result);
1303 region->init_req(3, if_lt);
1304 }
1305 if (!stopped()) {
1306 result = _gvn.transform(new AddINode(result, from_index));
1307 phi->init_req(4, result);
1308 region->init_req(4, control());
1309 }
1310 }
1311
1312 set_control(_gvn.transform(region));
1313 record_for_igvn(region);
1314 set_result(_gvn.transform(phi));
1315 clear_upper_avx();
1316
1317 return true;
1318 }
1319
1320 // Create StrIndexOfNode with fast path checks
1321 Node* LibraryCallKit::make_indexOf_node(Node* src_start, Node* src_count, Node* tgt_start, Node* tgt_count,
1322 RegionNode* region, Node* phi, StrIntrinsicNode::ArgEnc ae) {
1323 // Check for substr count > string count
1324 Node* cmp = _gvn.transform(new CmpINode(tgt_count, src_count));
1325 Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::gt));
1326 Node* if_gt = generate_slow_guard(bol, nullptr);
1327 if (if_gt != nullptr) {
1328 phi->init_req(1, intcon(-1));
1329 region->init_req(1, if_gt);
1330 }
1331 if (!stopped()) {
1332 // Check for substr count == 0
1333 cmp = _gvn.transform(new CmpINode(tgt_count, intcon(0)));
1334 bol = _gvn.transform(new BoolNode(cmp, BoolTest::eq));
1335 Node* if_zero = generate_slow_guard(bol, nullptr);
1336 if (if_zero != nullptr) {
1337 phi->init_req(2, intcon(0));
1338 region->init_req(2, if_zero);
1339 }
1340 }
1341 if (!stopped()) {
1342 return make_string_method_node(Op_StrIndexOf, src_start, src_count, tgt_start, tgt_count, ae);
1343 }
1344 return nullptr;
1345 }
1346
1347 //-----------------------------inline_string_indexOfChar-----------------------
1348 bool LibraryCallKit::inline_string_indexOfChar(StrIntrinsicNode::ArgEnc ae) {
1349 if (too_many_traps(Deoptimization::Reason_intrinsic)) {
1350 return false;
1351 }
1352 if (!Matcher::match_rule_supported(Op_StrIndexOfChar)) {
1353 return false;
1354 }
1355 assert(callee()->signature()->size() == 4, "String.indexOfChar() has 4 arguments");
1356 Node* src = argument(0); // byte[]
1357 Node* int_ch = argument(1);
1358 Node* from_index = argument(2);
1359 Node* max = argument(3);
1360
1361 src = must_be_not_null(src, true);
1362
1363 Node* src_offset = ae == StrIntrinsicNode::L ? from_index : _gvn.transform(new LShiftINode(from_index, intcon(1)));
1364 Node* src_start = array_element_address(src, src_offset, T_BYTE);
1365 Node* src_count = _gvn.transform(new SubINode(max, from_index));
1366
1367 // Range checks
1368 generate_string_range_check(src, src_offset, src_count, ae == StrIntrinsicNode::U);
1369
1370 // Check for int_ch >= 0
1371 Node* int_ch_cmp = _gvn.transform(new CmpINode(int_ch, intcon(0)));
1372 Node* int_ch_bol = _gvn.transform(new BoolNode(int_ch_cmp, BoolTest::ge));
1373 {
1374 BuildCutout unless(this, int_ch_bol, PROB_MAX);
1375 uncommon_trap(Deoptimization::Reason_intrinsic,
1376 Deoptimization::Action_maybe_recompile);
1377 }
1378 if (stopped()) {
1379 return true;
1380 }
1381
1382 RegionNode* region = new RegionNode(3);
1383 Node* phi = new PhiNode(region, TypeInt::INT);
1384
1385 Node* result = new StrIndexOfCharNode(control(), memory(TypeAryPtr::BYTES), src_start, src_count, int_ch, ae);
1386 C->set_has_split_ifs(true); // Has chance for split-if optimization
1387 _gvn.transform(result);
1388
1389 Node* cmp = _gvn.transform(new CmpINode(result, intcon(0)));
1390 Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::lt));
1391
1392 Node* if_lt = generate_slow_guard(bol, nullptr);
1393 if (if_lt != nullptr) {
1394 // result == -1
1395 phi->init_req(2, result);
1396 region->init_req(2, if_lt);
1397 }
1398 if (!stopped()) {
1399 result = _gvn.transform(new AddINode(result, from_index));
1400 phi->init_req(1, result);
1401 region->init_req(1, control());
1402 }
1403 set_control(_gvn.transform(region));
1404 record_for_igvn(region);
1405 set_result(_gvn.transform(phi));
1406 clear_upper_avx();
1407
1408 return true;
1409 }
1410 //---------------------------inline_string_copy---------------------
1411 // compressIt == true --> generate a compressed copy operation (compress char[]/byte[] to byte[])
1412 // int StringUTF16.compress(char[] src, int srcOff, byte[] dst, int dstOff, int len)
1413 // int StringUTF16.compress(byte[] src, int srcOff, byte[] dst, int dstOff, int len)
1414 // compressIt == false --> generate an inflated copy operation (inflate byte[] to char[]/byte[])
1415 // void StringLatin1.inflate(byte[] src, int srcOff, char[] dst, int dstOff, int len)
1416 // void StringLatin1.inflate(byte[] src, int srcOff, byte[] dst, int dstOff, int len)
1417 bool LibraryCallKit::inline_string_copy(bool compress) {
1418 if (too_many_traps(Deoptimization::Reason_intrinsic)) {
1419 return false;
1420 }
1421 int nargs = 5; // 2 oops, 3 ints
1422 assert(callee()->signature()->size() == nargs, "string copy has 5 arguments");
1423
1424 Node* src = argument(0);
1425 Node* src_offset = argument(1);
1426 Node* dst = argument(2);
1427 Node* dst_offset = argument(3);
1428 Node* length = argument(4);
1429
1430 // Check for allocation before we add nodes that would confuse
1431 // tightly_coupled_allocation()
1432 AllocateArrayNode* alloc = tightly_coupled_allocation(dst);
1433
1434 // Figure out the size and type of the elements we will be copying.
1435 const TypeAryPtr* src_type = src->Value(&_gvn)->isa_aryptr();
1436 const TypeAryPtr* dst_type = dst->Value(&_gvn)->isa_aryptr();
1437 if (src_type == nullptr || dst_type == nullptr) {
1438 return false;
1439 }
1440 BasicType src_elem = src_type->elem()->array_element_basic_type();
1441 BasicType dst_elem = dst_type->elem()->array_element_basic_type();
1442 assert((compress && dst_elem == T_BYTE && (src_elem == T_BYTE || src_elem == T_CHAR)) ||
1443 (!compress && src_elem == T_BYTE && (dst_elem == T_BYTE || dst_elem == T_CHAR)),
1444 "Unsupported array types for inline_string_copy");
1445
1446 src = must_be_not_null(src, true);
1447 dst = must_be_not_null(dst, true);
1448
1449 // Convert char[] offsets to byte[] offsets
1450 bool convert_src = (compress && src_elem == T_BYTE);
1451 bool convert_dst = (!compress && dst_elem == T_BYTE);
1452 if (convert_src) {
1453 src_offset = _gvn.transform(new LShiftINode(src_offset, intcon(1)));
1454 } else if (convert_dst) {
1455 dst_offset = _gvn.transform(new LShiftINode(dst_offset, intcon(1)));
1456 }
1457
1458 // Range checks
1459 generate_string_range_check(src, src_offset, length, convert_src);
1460 generate_string_range_check(dst, dst_offset, length, convert_dst);
1461 if (stopped()) {
1462 return true;
1463 }
1464
1465 Node* src_start = array_element_address(src, src_offset, src_elem);
1466 Node* dst_start = array_element_address(dst, dst_offset, dst_elem);
1467 // 'src_start' points to src array + scaled offset
1468 // 'dst_start' points to dst array + scaled offset
1469 Node* count = nullptr;
1470 if (compress) {
1471 count = compress_string(src_start, TypeAryPtr::get_array_body_type(src_elem), dst_start, length);
1472 } else {
1473 inflate_string(src_start, dst_start, TypeAryPtr::get_array_body_type(dst_elem), length);
1474 }
1475
1476 if (alloc != nullptr) {
1477 if (alloc->maybe_set_complete(&_gvn)) {
1478 // "You break it, you buy it."
1479 InitializeNode* init = alloc->initialization();
1480 assert(init->is_complete(), "we just did this");
1481 init->set_complete_with_arraycopy();
1482 assert(dst->is_CheckCastPP(), "sanity");
1483 assert(dst->in(0)->in(0) == init, "dest pinned");
1484 }
1485 // Do not let stores that initialize this object be reordered with
1486 // a subsequent store that would make this object accessible by
1487 // other threads.
1488 // Record what AllocateNode this StoreStore protects so that
1489 // escape analysis can go from the MemBarStoreStoreNode to the
1490 // AllocateNode and eliminate the MemBarStoreStoreNode if possible
1491 // based on the escape status of the AllocateNode.
1492 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out_or_null(AllocateNode::RawAddress));
1493 }
1494 if (compress) {
1495 set_result(_gvn.transform(count));
1496 }
1497 clear_upper_avx();
1498
1499 return true;
1500 }
1501
1502 #ifdef _LP64
1503 #define XTOP ,top() /*additional argument*/
1504 #else //_LP64
1505 #define XTOP /*no additional argument*/
1506 #endif //_LP64
1507
1508 //------------------------inline_string_toBytesU--------------------------
1509 // public static byte[] StringUTF16.toBytes(char[] value, int off, int len)
1510 bool LibraryCallKit::inline_string_toBytesU() {
1511 if (too_many_traps(Deoptimization::Reason_intrinsic)) {
1512 return false;
1513 }
1514 // Get the arguments.
1515 Node* value = argument(0);
1516 Node* offset = argument(1);
1517 Node* length = argument(2);
1518
1519 Node* newcopy = nullptr;
1520
1521 // Set the original stack and the reexecute bit for the interpreter to reexecute
1522 // the bytecode that invokes StringUTF16.toBytes() if deoptimization happens.
1523 { PreserveReexecuteState preexecs(this);
1524 jvms()->set_should_reexecute(true);
1525
1526 // Check if a null path was taken unconditionally.
1527 value = null_check(value);
1528
1529 RegionNode* bailout = new RegionNode(1);
1530 record_for_igvn(bailout);
1531
1532 // Range checks
1533 generate_negative_guard(offset, bailout);
1534 generate_negative_guard(length, bailout);
1535 generate_limit_guard(offset, length, load_array_length(value), bailout);
1536 // Make sure that resulting byte[] length does not overflow Integer.MAX_VALUE
1537 generate_limit_guard(length, intcon(0), intcon(max_jint/2), bailout);
1538
1539 if (bailout->req() > 1) {
1540 PreserveJVMState pjvms(this);
1541 set_control(_gvn.transform(bailout));
1542 uncommon_trap(Deoptimization::Reason_intrinsic,
1543 Deoptimization::Action_maybe_recompile);
1544 }
1545 if (stopped()) {
1546 return true;
1547 }
1548
1549 Node* size = _gvn.transform(new LShiftINode(length, intcon(1)));
1550 Node* klass_node = makecon(TypeKlassPtr::make(ciTypeArrayKlass::make(T_BYTE)));
1551 newcopy = new_array(klass_node, size, 0); // no arguments to push
1552 AllocateArrayNode* alloc = tightly_coupled_allocation(newcopy);
1553 guarantee(alloc != nullptr, "created above");
1554
1555 // Calculate starting addresses.
1556 Node* src_start = array_element_address(value, offset, T_CHAR);
1557 Node* dst_start = basic_plus_adr(newcopy, arrayOopDesc::base_offset_in_bytes(T_BYTE));
1558
1559 // Check if src array address is aligned to HeapWordSize (dst is always aligned)
1560 const TypeInt* toffset = gvn().type(offset)->is_int();
1561 bool aligned = toffset->is_con() && ((toffset->get_con() * type2aelembytes(T_CHAR)) % HeapWordSize == 0);
1562
1563 // Figure out which arraycopy runtime method to call (disjoint, uninitialized).
1564 const char* copyfunc_name = "arraycopy";
1565 address copyfunc_addr = StubRoutines::select_arraycopy_function(T_CHAR, aligned, true, copyfunc_name, true);
1566 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP,
1567 OptoRuntime::fast_arraycopy_Type(),
1568 copyfunc_addr, copyfunc_name, TypeRawPtr::BOTTOM,
1569 src_start, dst_start, ConvI2X(length) XTOP);
1570 // Do not let reads from the cloned object float above the arraycopy.
1571 if (alloc->maybe_set_complete(&_gvn)) {
1572 // "You break it, you buy it."
1573 InitializeNode* init = alloc->initialization();
1574 assert(init->is_complete(), "we just did this");
1575 init->set_complete_with_arraycopy();
1576 assert(newcopy->is_CheckCastPP(), "sanity");
1577 assert(newcopy->in(0)->in(0) == init, "dest pinned");
1578 }
1579 // Do not let stores that initialize this object be reordered with
1580 // a subsequent store that would make this object accessible by
1581 // other threads.
1582 // Record what AllocateNode this StoreStore protects so that
1583 // escape analysis can go from the MemBarStoreStoreNode to the
1584 // AllocateNode and eliminate the MemBarStoreStoreNode if possible
1585 // based on the escape status of the AllocateNode.
1586 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out_or_null(AllocateNode::RawAddress));
1587 } // original reexecute is set back here
1588
1589 C->set_has_split_ifs(true); // Has chance for split-if optimization
1590 if (!stopped()) {
1591 set_result(newcopy);
1592 }
1593 clear_upper_avx();
1594
1595 return true;
1596 }
1597
1598 //------------------------inline_string_getCharsU--------------------------
1599 // public void StringUTF16.getChars(byte[] src, int srcBegin, int srcEnd, char dst[], int dstBegin)
1600 bool LibraryCallKit::inline_string_getCharsU() {
1601 if (too_many_traps(Deoptimization::Reason_intrinsic)) {
1602 return false;
1603 }
1604
1605 // Get the arguments.
1606 Node* src = argument(0);
1607 Node* src_begin = argument(1);
1608 Node* src_end = argument(2); // exclusive offset (i < src_end)
1609 Node* dst = argument(3);
1610 Node* dst_begin = argument(4);
1611
1612 // Check for allocation before we add nodes that would confuse
1613 // tightly_coupled_allocation()
1614 AllocateArrayNode* alloc = tightly_coupled_allocation(dst);
1615
1616 // Check if a null path was taken unconditionally.
1617 src = null_check(src);
1618 dst = null_check(dst);
1619 if (stopped()) {
1620 return true;
1621 }
1622
1623 // Get length and convert char[] offset to byte[] offset
1624 Node* length = _gvn.transform(new SubINode(src_end, src_begin));
1625 src_begin = _gvn.transform(new LShiftINode(src_begin, intcon(1)));
1626
1627 // Range checks
1628 generate_string_range_check(src, src_begin, length, true);
1629 generate_string_range_check(dst, dst_begin, length, false);
1630 if (stopped()) {
1631 return true;
1632 }
1633
1634 if (!stopped()) {
1635 // Calculate starting addresses.
1636 Node* src_start = array_element_address(src, src_begin, T_BYTE);
1637 Node* dst_start = array_element_address(dst, dst_begin, T_CHAR);
1638
1639 // Check if array addresses are aligned to HeapWordSize
1640 const TypeInt* tsrc = gvn().type(src_begin)->is_int();
1641 const TypeInt* tdst = gvn().type(dst_begin)->is_int();
1642 bool aligned = tsrc->is_con() && ((tsrc->get_con() * type2aelembytes(T_BYTE)) % HeapWordSize == 0) &&
1643 tdst->is_con() && ((tdst->get_con() * type2aelembytes(T_CHAR)) % HeapWordSize == 0);
1644
1645 // Figure out which arraycopy runtime method to call (disjoint, uninitialized).
1646 const char* copyfunc_name = "arraycopy";
1647 address copyfunc_addr = StubRoutines::select_arraycopy_function(T_CHAR, aligned, true, copyfunc_name, true);
1648 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP,
1649 OptoRuntime::fast_arraycopy_Type(),
1650 copyfunc_addr, copyfunc_name, TypeRawPtr::BOTTOM,
1651 src_start, dst_start, ConvI2X(length) XTOP);
1652 // Do not let reads from the cloned object float above the arraycopy.
1653 if (alloc != nullptr) {
1654 if (alloc->maybe_set_complete(&_gvn)) {
1655 // "You break it, you buy it."
1656 InitializeNode* init = alloc->initialization();
1657 assert(init->is_complete(), "we just did this");
1658 init->set_complete_with_arraycopy();
1659 assert(dst->is_CheckCastPP(), "sanity");
1660 assert(dst->in(0)->in(0) == init, "dest pinned");
1661 }
1662 // Do not let stores that initialize this object be reordered with
1663 // a subsequent store that would make this object accessible by
1664 // other threads.
1665 // Record what AllocateNode this StoreStore protects so that
1666 // escape analysis can go from the MemBarStoreStoreNode to the
1667 // AllocateNode and eliminate the MemBarStoreStoreNode if possible
1668 // based on the escape status of the AllocateNode.
1669 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out_or_null(AllocateNode::RawAddress));
1670 } else {
1671 insert_mem_bar(Op_MemBarCPUOrder);
1672 }
1673 }
1674
1675 C->set_has_split_ifs(true); // Has chance for split-if optimization
1676 return true;
1677 }
1678
1679 //----------------------inline_string_char_access----------------------------
1680 // Store/Load char to/from byte[] array.
1681 // static void StringUTF16.putChar(byte[] val, int index, int c)
1682 // static char StringUTF16.getChar(byte[] val, int index)
1683 bool LibraryCallKit::inline_string_char_access(bool is_store) {
1684 Node* value = argument(0);
1685 Node* index = argument(1);
1686 Node* ch = is_store ? argument(2) : nullptr;
1687
1688 // This intrinsic accesses byte[] array as char[] array. Computing the offsets
1689 // correctly requires matched array shapes.
1690 assert (arrayOopDesc::base_offset_in_bytes(T_CHAR) == arrayOopDesc::base_offset_in_bytes(T_BYTE),
1691 "sanity: byte[] and char[] bases agree");
1692 assert (type2aelembytes(T_CHAR) == type2aelembytes(T_BYTE)*2,
1693 "sanity: byte[] and char[] scales agree");
1694
1695 // Bail when getChar over constants is requested: constant folding would
1696 // reject folding mismatched char access over byte[]. A normal inlining for getChar
1697 // Java method would constant fold nicely instead.
1698 if (!is_store && value->is_Con() && index->is_Con()) {
1699 return false;
1700 }
1701
1702 // Save state and restore on bailout
1703 uint old_sp = sp();
1704 SafePointNode* old_map = clone_map();
1705
1706 value = must_be_not_null(value, true);
1707
1708 Node* adr = array_element_address(value, index, T_CHAR);
1709 if (adr->is_top()) {
1710 set_map(old_map);
1711 set_sp(old_sp);
1712 return false;
1713 }
1714 destruct_map_clone(old_map);
1715 if (is_store) {
1716 access_store_at(value, adr, TypeAryPtr::BYTES, ch, TypeInt::CHAR, T_CHAR, IN_HEAP | MO_UNORDERED | C2_MISMATCHED);
1717 } else {
1718 ch = access_load_at(value, adr, TypeAryPtr::BYTES, TypeInt::CHAR, T_CHAR, IN_HEAP | MO_UNORDERED | C2_MISMATCHED | C2_CONTROL_DEPENDENT_LOAD | C2_UNKNOWN_CONTROL_LOAD);
1719 set_result(ch);
1720 }
1721 return true;
1722 }
1723
1724
1725 //------------------------------inline_math-----------------------------------
1726 // public static double Math.abs(double)
1727 // public static double Math.sqrt(double)
1728 // public static double Math.log(double)
1729 // public static double Math.log10(double)
1730 // public static double Math.round(double)
1731 bool LibraryCallKit::inline_double_math(vmIntrinsics::ID id) {
1732 Node* arg = argument(0);
1733 Node* n = nullptr;
1734 switch (id) {
1735 case vmIntrinsics::_dabs: n = new AbsDNode( arg); break;
1736 case vmIntrinsics::_dsqrt:
1737 case vmIntrinsics::_dsqrt_strict:
1738 n = new SqrtDNode(C, control(), arg); break;
1739 case vmIntrinsics::_ceil: n = RoundDoubleModeNode::make(_gvn, arg, RoundDoubleModeNode::rmode_ceil); break;
1740 case vmIntrinsics::_floor: n = RoundDoubleModeNode::make(_gvn, arg, RoundDoubleModeNode::rmode_floor); break;
1741 case vmIntrinsics::_rint: n = RoundDoubleModeNode::make(_gvn, arg, RoundDoubleModeNode::rmode_rint); break;
1742 case vmIntrinsics::_roundD: n = new RoundDNode(arg); break;
1743 case vmIntrinsics::_dcopySign: n = CopySignDNode::make(_gvn, arg, argument(2)); break;
1744 case vmIntrinsics::_dsignum: n = SignumDNode::make(_gvn, arg); break;
1745 default: fatal_unexpected_iid(id); break;
1746 }
1747 set_result(_gvn.transform(n));
1748 return true;
1749 }
1750
1751 //------------------------------inline_math-----------------------------------
1752 // public static float Math.abs(float)
1753 // public static int Math.abs(int)
1754 // public static long Math.abs(long)
1755 bool LibraryCallKit::inline_math(vmIntrinsics::ID id) {
1756 Node* arg = argument(0);
1757 Node* n = nullptr;
1758 switch (id) {
1759 case vmIntrinsics::_fabs: n = new AbsFNode( arg); break;
1760 case vmIntrinsics::_iabs: n = new AbsINode( arg); break;
1761 case vmIntrinsics::_labs: n = new AbsLNode( arg); break;
1762 case vmIntrinsics::_fcopySign: n = new CopySignFNode(arg, argument(1)); break;
1763 case vmIntrinsics::_fsignum: n = SignumFNode::make(_gvn, arg); break;
1764 case vmIntrinsics::_roundF: n = new RoundFNode(arg); break;
1765 default: fatal_unexpected_iid(id); break;
1766 }
1767 set_result(_gvn.transform(n));
1768 return true;
1769 }
1770
1771 //------------------------------runtime_math-----------------------------
1772 bool LibraryCallKit::runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName) {
1773 assert(call_type == OptoRuntime::Math_DD_D_Type() || call_type == OptoRuntime::Math_D_D_Type(),
1774 "must be (DD)D or (D)D type");
1775
1776 // Inputs
1777 Node* a = argument(0);
1778 Node* b = (call_type == OptoRuntime::Math_DD_D_Type()) ? argument(2) : nullptr;
1779
1780 const TypePtr* no_memory_effects = nullptr;
1781 Node* trig = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName,
1782 no_memory_effects,
1783 a, top(), b, b ? top() : nullptr);
1784 Node* value = _gvn.transform(new ProjNode(trig, TypeFunc::Parms+0));
1785 #ifdef ASSERT
1786 Node* value_top = _gvn.transform(new ProjNode(trig, TypeFunc::Parms+1));
1787 assert(value_top == top(), "second value must be top");
1788 #endif
1789
1790 set_result(value);
1791 return true;
1792 }
1793
1794 //------------------------------inline_math_pow-----------------------------
1795 bool LibraryCallKit::inline_math_pow() {
1796 Node* exp = argument(2);
1797 const TypeD* d = _gvn.type(exp)->isa_double_constant();
1798 if (d != nullptr) {
1799 if (d->getd() == 2.0) {
1800 // Special case: pow(x, 2.0) => x * x
1801 Node* base = argument(0);
1802 set_result(_gvn.transform(new MulDNode(base, base)));
1803 return true;
1804 } else if (d->getd() == 0.5 && Matcher::match_rule_supported(Op_SqrtD)) {
1805 // Special case: pow(x, 0.5) => sqrt(x)
1806 Node* base = argument(0);
1807 Node* zero = _gvn.zerocon(T_DOUBLE);
1808
1809 RegionNode* region = new RegionNode(3);
1810 Node* phi = new PhiNode(region, Type::DOUBLE);
1811
1812 Node* cmp = _gvn.transform(new CmpDNode(base, zero));
1813 // According to the API specs, pow(-0.0, 0.5) = 0.0 and sqrt(-0.0) = -0.0.
1814 // So pow(-0.0, 0.5) shouldn't be replaced with sqrt(-0.0).
1815 // -0.0/+0.0 are both excluded since floating-point comparison doesn't distinguish -0.0 from +0.0.
1816 Node* test = _gvn.transform(new BoolNode(cmp, BoolTest::le));
1817
1818 Node* if_pow = generate_slow_guard(test, nullptr);
1819 Node* value_sqrt = _gvn.transform(new SqrtDNode(C, control(), base));
1820 phi->init_req(1, value_sqrt);
1821 region->init_req(1, control());
1822
1823 if (if_pow != nullptr) {
1824 set_control(if_pow);
1825 address target = StubRoutines::dpow() != nullptr ? StubRoutines::dpow() :
1826 CAST_FROM_FN_PTR(address, SharedRuntime::dpow);
1827 const TypePtr* no_memory_effects = nullptr;
1828 Node* trig = make_runtime_call(RC_LEAF, OptoRuntime::Math_DD_D_Type(), target, "POW",
1829 no_memory_effects, base, top(), exp, top());
1830 Node* value_pow = _gvn.transform(new ProjNode(trig, TypeFunc::Parms+0));
1831 #ifdef ASSERT
1832 Node* value_top = _gvn.transform(new ProjNode(trig, TypeFunc::Parms+1));
1833 assert(value_top == top(), "second value must be top");
1834 #endif
1835 phi->init_req(2, value_pow);
1836 region->init_req(2, _gvn.transform(new ProjNode(trig, TypeFunc::Control)));
1837 }
1838
1839 C->set_has_split_ifs(true); // Has chance for split-if optimization
1840 set_control(_gvn.transform(region));
1841 record_for_igvn(region);
1842 set_result(_gvn.transform(phi));
1843
1844 return true;
1845 }
1846 }
1847
1848 return StubRoutines::dpow() != nullptr ?
1849 runtime_math(OptoRuntime::Math_DD_D_Type(), StubRoutines::dpow(), "dpow") :
1850 runtime_math(OptoRuntime::Math_DD_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dpow), "POW");
1851 }
1852
1853 //------------------------------inline_math_native-----------------------------
1854 bool LibraryCallKit::inline_math_native(vmIntrinsics::ID id) {
1855 switch (id) {
1856 case vmIntrinsics::_dsin:
1857 return StubRoutines::dsin() != nullptr ?
1858 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dsin(), "dsin") :
1859 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dsin), "SIN");
1860 case vmIntrinsics::_dcos:
1861 return StubRoutines::dcos() != nullptr ?
1862 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dcos(), "dcos") :
1863 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dcos), "COS");
1864 case vmIntrinsics::_dtan:
1865 return StubRoutines::dtan() != nullptr ?
1866 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dtan(), "dtan") :
1867 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dtan), "TAN");
1868 case vmIntrinsics::_dtanh:
1869 return StubRoutines::dtanh() != nullptr ?
1870 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dtanh(), "dtanh") : false;
1871 case vmIntrinsics::_dexp:
1872 return StubRoutines::dexp() != nullptr ?
1873 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dexp(), "dexp") :
1874 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dexp), "EXP");
1875 case vmIntrinsics::_dlog:
1876 return StubRoutines::dlog() != nullptr ?
1877 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dlog(), "dlog") :
1878 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dlog), "LOG");
1879 case vmIntrinsics::_dlog10:
1880 return StubRoutines::dlog10() != nullptr ?
1881 runtime_math(OptoRuntime::Math_D_D_Type(), StubRoutines::dlog10(), "dlog10") :
1882 runtime_math(OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dlog10), "LOG10");
1883
1884 case vmIntrinsics::_roundD: return Matcher::match_rule_supported(Op_RoundD) ? inline_double_math(id) : false;
1885 case vmIntrinsics::_ceil:
1886 case vmIntrinsics::_floor:
1887 case vmIntrinsics::_rint: return Matcher::match_rule_supported(Op_RoundDoubleMode) ? inline_double_math(id) : false;
1888
1889 case vmIntrinsics::_dsqrt:
1890 case vmIntrinsics::_dsqrt_strict:
1891 return Matcher::match_rule_supported(Op_SqrtD) ? inline_double_math(id) : false;
1892 case vmIntrinsics::_dabs: return Matcher::has_match_rule(Op_AbsD) ? inline_double_math(id) : false;
1893 case vmIntrinsics::_fabs: return Matcher::match_rule_supported(Op_AbsF) ? inline_math(id) : false;
1894 case vmIntrinsics::_iabs: return Matcher::match_rule_supported(Op_AbsI) ? inline_math(id) : false;
1895 case vmIntrinsics::_labs: return Matcher::match_rule_supported(Op_AbsL) ? inline_math(id) : false;
1896
1897 case vmIntrinsics::_dpow: return inline_math_pow();
1898 case vmIntrinsics::_dcopySign: return inline_double_math(id);
1899 case vmIntrinsics::_fcopySign: return inline_math(id);
1900 case vmIntrinsics::_dsignum: return Matcher::match_rule_supported(Op_SignumD) ? inline_double_math(id) : false;
1901 case vmIntrinsics::_fsignum: return Matcher::match_rule_supported(Op_SignumF) ? inline_math(id) : false;
1902 case vmIntrinsics::_roundF: return Matcher::match_rule_supported(Op_RoundF) ? inline_math(id) : false;
1903
1904 // These intrinsics are not yet correctly implemented
1905 case vmIntrinsics::_datan2:
1906 return false;
1907
1908 default:
1909 fatal_unexpected_iid(id);
1910 return false;
1911 }
1912 }
1913
1914 //----------------------------inline_notify-----------------------------------*
1915 bool LibraryCallKit::inline_notify(vmIntrinsics::ID id) {
1916 const TypeFunc* ftype = OptoRuntime::monitor_notify_Type();
1917 address func;
1918 if (id == vmIntrinsics::_notify) {
1919 func = OptoRuntime::monitor_notify_Java();
1920 } else {
1921 func = OptoRuntime::monitor_notifyAll_Java();
1922 }
1923 Node* call = make_runtime_call(RC_NO_LEAF, ftype, func, nullptr, TypeRawPtr::BOTTOM, argument(0));
1924 make_slow_call_ex(call, env()->Throwable_klass(), false);
1925 return true;
1926 }
1927
1928
1929 //----------------------------inline_min_max-----------------------------------
1930 bool LibraryCallKit::inline_min_max(vmIntrinsics::ID id) {
1931 Node* a = nullptr;
1932 Node* b = nullptr;
1933 Node* n = nullptr;
1934 switch (id) {
1935 case vmIntrinsics::_min:
1936 case vmIntrinsics::_max:
1937 case vmIntrinsics::_minF:
1938 case vmIntrinsics::_maxF:
1939 case vmIntrinsics::_minF_strict:
1940 case vmIntrinsics::_maxF_strict:
1941 case vmIntrinsics::_min_strict:
1942 case vmIntrinsics::_max_strict:
1943 assert(callee()->signature()->size() == 2, "minF/maxF has 2 parameters of size 1 each.");
1944 a = argument(0);
1945 b = argument(1);
1946 break;
1947 case vmIntrinsics::_minD:
1948 case vmIntrinsics::_maxD:
1949 case vmIntrinsics::_minD_strict:
1950 case vmIntrinsics::_maxD_strict:
1951 assert(callee()->signature()->size() == 4, "minD/maxD has 2 parameters of size 2 each.");
1952 a = argument(0);
1953 b = argument(2);
1954 break;
1955 case vmIntrinsics::_minL:
1956 case vmIntrinsics::_maxL:
1957 assert(callee()->signature()->size() == 4, "minL/maxL has 2 parameters of size 2 each.");
1958 a = argument(0);
1959 b = argument(2);
1960 break;
1961 default:
1962 fatal_unexpected_iid(id);
1963 break;
1964 }
1965
1966 switch (id) {
1967 case vmIntrinsics::_min:
1968 case vmIntrinsics::_min_strict:
1969 n = new MinINode(a, b);
1970 break;
1971 case vmIntrinsics::_max:
1972 case vmIntrinsics::_max_strict:
1973 n = new MaxINode(a, b);
1974 break;
1975 case vmIntrinsics::_minF:
1976 case vmIntrinsics::_minF_strict:
1977 n = new MinFNode(a, b);
1978 break;
1979 case vmIntrinsics::_maxF:
1980 case vmIntrinsics::_maxF_strict:
1981 n = new MaxFNode(a, b);
1982 break;
1983 case vmIntrinsics::_minD:
1984 case vmIntrinsics::_minD_strict:
1985 n = new MinDNode(a, b);
1986 break;
1987 case vmIntrinsics::_maxD:
1988 case vmIntrinsics::_maxD_strict:
1989 n = new MaxDNode(a, b);
1990 break;
1991 case vmIntrinsics::_minL:
1992 n = new MinLNode(_gvn.C, a, b);
1993 break;
1994 case vmIntrinsics::_maxL:
1995 n = new MaxLNode(_gvn.C, a, b);
1996 break;
1997 default:
1998 fatal_unexpected_iid(id);
1999 break;
2000 }
2001
2002 set_result(_gvn.transform(n));
2003 return true;
2004 }
2005
2006 void LibraryCallKit::inline_math_mathExact(Node* math, Node *test) {
2007 Node* bol = _gvn.transform( new BoolNode(test, BoolTest::overflow) );
2008 IfNode* check = create_and_map_if(control(), bol, PROB_UNLIKELY_MAG(3), COUNT_UNKNOWN);
2009 Node* fast_path = _gvn.transform( new IfFalseNode(check));
2010 Node* slow_path = _gvn.transform( new IfTrueNode(check) );
2011
2012 {
2013 PreserveJVMState pjvms(this);
2014 PreserveReexecuteState preexecs(this);
2015 jvms()->set_should_reexecute(true);
2016
2017 set_control(slow_path);
2018 set_i_o(i_o());
2019
2020 uncommon_trap(Deoptimization::Reason_intrinsic,
2021 Deoptimization::Action_none);
2022 }
2023
2024 set_control(fast_path);
2025 set_result(math);
2026 }
2027
2028 template <typename OverflowOp>
2029 bool LibraryCallKit::inline_math_overflow(Node* arg1, Node* arg2) {
2030 typedef typename OverflowOp::MathOp MathOp;
2031
2032 MathOp* mathOp = new MathOp(arg1, arg2);
2033 Node* operation = _gvn.transform( mathOp );
2034 Node* ofcheck = _gvn.transform( new OverflowOp(arg1, arg2) );
2035 inline_math_mathExact(operation, ofcheck);
2036 return true;
2037 }
2038
2039 bool LibraryCallKit::inline_math_addExactI(bool is_increment) {
2040 return inline_math_overflow<OverflowAddINode>(argument(0), is_increment ? intcon(1) : argument(1));
2041 }
2042
2043 bool LibraryCallKit::inline_math_addExactL(bool is_increment) {
2044 return inline_math_overflow<OverflowAddLNode>(argument(0), is_increment ? longcon(1) : argument(2));
2045 }
2046
2047 bool LibraryCallKit::inline_math_subtractExactI(bool is_decrement) {
2048 return inline_math_overflow<OverflowSubINode>(argument(0), is_decrement ? intcon(1) : argument(1));
2049 }
2050
2051 bool LibraryCallKit::inline_math_subtractExactL(bool is_decrement) {
2052 return inline_math_overflow<OverflowSubLNode>(argument(0), is_decrement ? longcon(1) : argument(2));
2053 }
2054
2055 bool LibraryCallKit::inline_math_negateExactI() {
2056 return inline_math_overflow<OverflowSubINode>(intcon(0), argument(0));
2057 }
2058
2059 bool LibraryCallKit::inline_math_negateExactL() {
2060 return inline_math_overflow<OverflowSubLNode>(longcon(0), argument(0));
2061 }
2062
2063 bool LibraryCallKit::inline_math_multiplyExactI() {
2064 return inline_math_overflow<OverflowMulINode>(argument(0), argument(1));
2065 }
2066
2067 bool LibraryCallKit::inline_math_multiplyExactL() {
2068 return inline_math_overflow<OverflowMulLNode>(argument(0), argument(2));
2069 }
2070
2071 bool LibraryCallKit::inline_math_multiplyHigh() {
2072 set_result(_gvn.transform(new MulHiLNode(argument(0), argument(2))));
2073 return true;
2074 }
2075
2076 bool LibraryCallKit::inline_math_unsignedMultiplyHigh() {
2077 set_result(_gvn.transform(new UMulHiLNode(argument(0), argument(2))));
2078 return true;
2079 }
2080
2081 inline int
2082 LibraryCallKit::classify_unsafe_addr(Node* &base, Node* &offset, BasicType type) {
2083 const TypePtr* base_type = TypePtr::NULL_PTR;
2084 if (base != nullptr) base_type = _gvn.type(base)->isa_ptr();
2085 if (base_type == nullptr) {
2086 // Unknown type.
2087 return Type::AnyPtr;
2088 } else if (_gvn.type(base->uncast()) == TypePtr::NULL_PTR) {
2089 // Since this is a null+long form, we have to switch to a rawptr.
2090 base = _gvn.transform(new CastX2PNode(offset));
2091 offset = MakeConX(0);
2092 return Type::RawPtr;
2093 } else if (base_type->base() == Type::RawPtr) {
2094 return Type::RawPtr;
2095 } else if (base_type->isa_oopptr()) {
2096 // Base is never null => always a heap address.
2097 if (!TypePtr::NULL_PTR->higher_equal(base_type)) {
2098 return Type::OopPtr;
2099 }
2100 // Offset is small => always a heap address.
2101 const TypeX* offset_type = _gvn.type(offset)->isa_intptr_t();
2102 if (offset_type != nullptr &&
2103 base_type->offset() == 0 && // (should always be?)
2104 offset_type->_lo >= 0 &&
2105 !MacroAssembler::needs_explicit_null_check(offset_type->_hi)) {
2106 return Type::OopPtr;
2107 } else if (type == T_OBJECT) {
2108 // off heap access to an oop doesn't make any sense. Has to be on
2109 // heap.
2110 return Type::OopPtr;
2111 }
2112 // Otherwise, it might either be oop+off or null+addr.
2113 return Type::AnyPtr;
2114 } else {
2115 // No information:
2116 return Type::AnyPtr;
2117 }
2118 }
2119
2120 Node* LibraryCallKit::make_unsafe_address(Node*& base, Node* offset, BasicType type, bool can_cast) {
2121 Node* uncasted_base = base;
2122 int kind = classify_unsafe_addr(uncasted_base, offset, type);
2123 if (kind == Type::RawPtr) {
2124 return basic_plus_adr(top(), uncasted_base, offset);
2125 } else if (kind == Type::AnyPtr) {
2126 assert(base == uncasted_base, "unexpected base change");
2127 if (can_cast) {
2128 if (!_gvn.type(base)->speculative_maybe_null() &&
2129 !too_many_traps(Deoptimization::Reason_speculate_null_check)) {
2130 // According to profiling, this access is always on
2131 // heap. Casting the base to not null and thus avoiding membars
2132 // around the access should allow better optimizations
2133 Node* null_ctl = top();
2134 base = null_check_oop(base, &null_ctl, true, true, true);
2135 assert(null_ctl->is_top(), "no null control here");
2136 return basic_plus_adr(base, offset);
2137 } else if (_gvn.type(base)->speculative_always_null() &&
2138 !too_many_traps(Deoptimization::Reason_speculate_null_assert)) {
2139 // According to profiling, this access is always off
2140 // heap.
2141 base = null_assert(base);
2142 Node* raw_base = _gvn.transform(new CastX2PNode(offset));
2143 offset = MakeConX(0);
2144 return basic_plus_adr(top(), raw_base, offset);
2145 }
2146 }
2147 // We don't know if it's an on heap or off heap access. Fall back
2148 // to raw memory access.
2149 Node* raw = _gvn.transform(new CheckCastPPNode(control(), base, TypeRawPtr::BOTTOM));
2150 return basic_plus_adr(top(), raw, offset);
2151 } else {
2152 assert(base == uncasted_base, "unexpected base change");
2153 // We know it's an on heap access so base can't be null
2154 if (TypePtr::NULL_PTR->higher_equal(_gvn.type(base))) {
2155 base = must_be_not_null(base, true);
2156 }
2157 return basic_plus_adr(base, offset);
2158 }
2159 }
2160
2161 //--------------------------inline_number_methods-----------------------------
2162 // inline int Integer.numberOfLeadingZeros(int)
2163 // inline int Long.numberOfLeadingZeros(long)
2164 //
2165 // inline int Integer.numberOfTrailingZeros(int)
2166 // inline int Long.numberOfTrailingZeros(long)
2167 //
2168 // inline int Integer.bitCount(int)
2169 // inline int Long.bitCount(long)
2170 //
2171 // inline char Character.reverseBytes(char)
2172 // inline short Short.reverseBytes(short)
2173 // inline int Integer.reverseBytes(int)
2174 // inline long Long.reverseBytes(long)
2175 bool LibraryCallKit::inline_number_methods(vmIntrinsics::ID id) {
2176 Node* arg = argument(0);
2177 Node* n = nullptr;
2178 switch (id) {
2179 case vmIntrinsics::_numberOfLeadingZeros_i: n = new CountLeadingZerosINode( arg); break;
2180 case vmIntrinsics::_numberOfLeadingZeros_l: n = new CountLeadingZerosLNode( arg); break;
2181 case vmIntrinsics::_numberOfTrailingZeros_i: n = new CountTrailingZerosINode(arg); break;
2182 case vmIntrinsics::_numberOfTrailingZeros_l: n = new CountTrailingZerosLNode(arg); break;
2183 case vmIntrinsics::_bitCount_i: n = new PopCountINode( arg); break;
2184 case vmIntrinsics::_bitCount_l: n = new PopCountLNode( arg); break;
2185 case vmIntrinsics::_reverseBytes_c: n = new ReverseBytesUSNode( arg); break;
2186 case vmIntrinsics::_reverseBytes_s: n = new ReverseBytesSNode( arg); break;
2187 case vmIntrinsics::_reverseBytes_i: n = new ReverseBytesINode( arg); break;
2188 case vmIntrinsics::_reverseBytes_l: n = new ReverseBytesLNode( arg); break;
2189 case vmIntrinsics::_reverse_i: n = new ReverseINode( arg); break;
2190 case vmIntrinsics::_reverse_l: n = new ReverseLNode( arg); break;
2191 default: fatal_unexpected_iid(id); break;
2192 }
2193 set_result(_gvn.transform(n));
2194 return true;
2195 }
2196
2197 //--------------------------inline_bitshuffle_methods-----------------------------
2198 // inline int Integer.compress(int, int)
2199 // inline int Integer.expand(int, int)
2200 // inline long Long.compress(long, long)
2201 // inline long Long.expand(long, long)
2202 bool LibraryCallKit::inline_bitshuffle_methods(vmIntrinsics::ID id) {
2203 Node* n = nullptr;
2204 switch (id) {
2205 case vmIntrinsics::_compress_i: n = new CompressBitsNode(argument(0), argument(1), TypeInt::INT); break;
2206 case vmIntrinsics::_expand_i: n = new ExpandBitsNode(argument(0), argument(1), TypeInt::INT); break;
2207 case vmIntrinsics::_compress_l: n = new CompressBitsNode(argument(0), argument(2), TypeLong::LONG); break;
2208 case vmIntrinsics::_expand_l: n = new ExpandBitsNode(argument(0), argument(2), TypeLong::LONG); break;
2209 default: fatal_unexpected_iid(id); break;
2210 }
2211 set_result(_gvn.transform(n));
2212 return true;
2213 }
2214
2215 //--------------------------inline_number_methods-----------------------------
2216 // inline int Integer.compareUnsigned(int, int)
2217 // inline int Long.compareUnsigned(long, long)
2218 bool LibraryCallKit::inline_compare_unsigned(vmIntrinsics::ID id) {
2219 Node* arg1 = argument(0);
2220 Node* arg2 = (id == vmIntrinsics::_compareUnsigned_l) ? argument(2) : argument(1);
2221 Node* n = nullptr;
2222 switch (id) {
2223 case vmIntrinsics::_compareUnsigned_i: n = new CmpU3Node(arg1, arg2); break;
2224 case vmIntrinsics::_compareUnsigned_l: n = new CmpUL3Node(arg1, arg2); break;
2225 default: fatal_unexpected_iid(id); break;
2226 }
2227 set_result(_gvn.transform(n));
2228 return true;
2229 }
2230
2231 //--------------------------inline_unsigned_divmod_methods-----------------------------
2232 // inline int Integer.divideUnsigned(int, int)
2233 // inline int Integer.remainderUnsigned(int, int)
2234 // inline long Long.divideUnsigned(long, long)
2235 // inline long Long.remainderUnsigned(long, long)
2236 bool LibraryCallKit::inline_divmod_methods(vmIntrinsics::ID id) {
2237 Node* n = nullptr;
2238 switch (id) {
2239 case vmIntrinsics::_divideUnsigned_i: {
2240 zero_check_int(argument(1));
2241 // Compile-time detect of null-exception
2242 if (stopped()) {
2243 return true; // keep the graph constructed so far
2244 }
2245 n = new UDivINode(control(), argument(0), argument(1));
2246 break;
2247 }
2248 case vmIntrinsics::_divideUnsigned_l: {
2249 zero_check_long(argument(2));
2250 // Compile-time detect of null-exception
2251 if (stopped()) {
2252 return true; // keep the graph constructed so far
2253 }
2254 n = new UDivLNode(control(), argument(0), argument(2));
2255 break;
2256 }
2257 case vmIntrinsics::_remainderUnsigned_i: {
2258 zero_check_int(argument(1));
2259 // Compile-time detect of null-exception
2260 if (stopped()) {
2261 return true; // keep the graph constructed so far
2262 }
2263 n = new UModINode(control(), argument(0), argument(1));
2264 break;
2265 }
2266 case vmIntrinsics::_remainderUnsigned_l: {
2267 zero_check_long(argument(2));
2268 // Compile-time detect of null-exception
2269 if (stopped()) {
2270 return true; // keep the graph constructed so far
2271 }
2272 n = new UModLNode(control(), argument(0), argument(2));
2273 break;
2274 }
2275 default: fatal_unexpected_iid(id); break;
2276 }
2277 set_result(_gvn.transform(n));
2278 return true;
2279 }
2280
2281 //----------------------------inline_unsafe_access----------------------------
2282
2283 const TypeOopPtr* LibraryCallKit::sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type) {
2284 // Attempt to infer a sharper value type from the offset and base type.
2285 ciKlass* sharpened_klass = nullptr;
2286
2287 // See if it is an instance field, with an object type.
2288 if (alias_type->field() != nullptr) {
2289 if (alias_type->field()->type()->is_klass()) {
2290 sharpened_klass = alias_type->field()->type()->as_klass();
2291 }
2292 }
2293
2294 const TypeOopPtr* result = nullptr;
2295 // See if it is a narrow oop array.
2296 if (adr_type->isa_aryptr()) {
2297 if (adr_type->offset() >= objArrayOopDesc::base_offset_in_bytes()) {
2298 const TypeOopPtr* elem_type = adr_type->is_aryptr()->elem()->make_oopptr();
2299 if (elem_type != nullptr && elem_type->is_loaded()) {
2300 // Sharpen the value type.
2301 result = elem_type;
2302 }
2303 }
2304 }
2305
2306 // The sharpened class might be unloaded if there is no class loader
2307 // contraint in place.
2308 if (result == nullptr && sharpened_klass != nullptr && sharpened_klass->is_loaded()) {
2309 // Sharpen the value type.
2310 result = TypeOopPtr::make_from_klass(sharpened_klass);
2311 }
2312 if (result != nullptr) {
2313 #ifndef PRODUCT
2314 if (C->print_intrinsics() || C->print_inlining()) {
2315 tty->print(" from base type: "); adr_type->dump(); tty->cr();
2316 tty->print(" sharpened value: "); result->dump(); tty->cr();
2317 }
2318 #endif
2319 }
2320 return result;
2321 }
2322
2323 DecoratorSet LibraryCallKit::mo_decorator_for_access_kind(AccessKind kind) {
2324 switch (kind) {
2325 case Relaxed:
2326 return MO_UNORDERED;
2327 case Opaque:
2328 return MO_RELAXED;
2329 case Acquire:
2330 return MO_ACQUIRE;
2331 case Release:
2332 return MO_RELEASE;
2333 case Volatile:
2334 return MO_SEQ_CST;
2335 default:
2336 ShouldNotReachHere();
2337 return 0;
2338 }
2339 }
2340
2341 bool LibraryCallKit::inline_unsafe_access(bool is_store, const BasicType type, const AccessKind kind, const bool unaligned) {
2342 if (callee()->is_static()) return false; // caller must have the capability!
2343 DecoratorSet decorators = C2_UNSAFE_ACCESS;
2344 guarantee(!is_store || kind != Acquire, "Acquire accesses can be produced only for loads");
2345 guarantee( is_store || kind != Release, "Release accesses can be produced only for stores");
2346 assert(type != T_OBJECT || !unaligned, "unaligned access not supported with object type");
2347
2348 if (is_reference_type(type)) {
2349 decorators |= ON_UNKNOWN_OOP_REF;
2350 }
2351
2352 if (unaligned) {
2353 decorators |= C2_UNALIGNED;
2354 }
2355
2356 #ifndef PRODUCT
2357 {
2358 ResourceMark rm;
2359 // Check the signatures.
2360 ciSignature* sig = callee()->signature();
2361 #ifdef ASSERT
2362 if (!is_store) {
2363 // Object getReference(Object base, int/long offset), etc.
2364 BasicType rtype = sig->return_type()->basic_type();
2365 assert(rtype == type, "getter must return the expected value");
2366 assert(sig->count() == 2, "oop getter has 2 arguments");
2367 assert(sig->type_at(0)->basic_type() == T_OBJECT, "getter base is object");
2368 assert(sig->type_at(1)->basic_type() == T_LONG, "getter offset is correct");
2369 } else {
2370 // void putReference(Object base, int/long offset, Object x), etc.
2371 assert(sig->return_type()->basic_type() == T_VOID, "putter must not return a value");
2372 assert(sig->count() == 3, "oop putter has 3 arguments");
2373 assert(sig->type_at(0)->basic_type() == T_OBJECT, "putter base is object");
2374 assert(sig->type_at(1)->basic_type() == T_LONG, "putter offset is correct");
2375 BasicType vtype = sig->type_at(sig->count()-1)->basic_type();
2376 assert(vtype == type, "putter must accept the expected value");
2377 }
2378 #endif // ASSERT
2379 }
2380 #endif //PRODUCT
2381
2382 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe".
2383
2384 Node* receiver = argument(0); // type: oop
2385
2386 // Build address expression.
2387 Node* heap_base_oop = top();
2388
2389 // The base is either a Java object or a value produced by Unsafe.staticFieldBase
2390 Node* base = argument(1); // type: oop
2391 // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset
2392 Node* offset = argument(2); // type: long
2393 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset
2394 // to be plain byte offsets, which are also the same as those accepted
2395 // by oopDesc::field_addr.
2396 assert(Unsafe_field_offset_to_byte_offset(11) == 11,
2397 "fieldOffset must be byte-scaled");
2398 // 32-bit machines ignore the high half!
2399 offset = ConvL2X(offset);
2400
2401 // Save state and restore on bailout
2402 uint old_sp = sp();
2403 SafePointNode* old_map = clone_map();
2404
2405 Node* adr = make_unsafe_address(base, offset, type, kind == Relaxed);
2406 assert(!stopped(), "Inlining of unsafe access failed: address construction stopped unexpectedly");
2407
2408 if (_gvn.type(base->uncast())->isa_ptr() == TypePtr::NULL_PTR) {
2409 if (type != T_OBJECT) {
2410 decorators |= IN_NATIVE; // off-heap primitive access
2411 } else {
2412 set_map(old_map);
2413 set_sp(old_sp);
2414 return false; // off-heap oop accesses are not supported
2415 }
2416 } else {
2417 heap_base_oop = base; // on-heap or mixed access
2418 }
2419
2420 // Can base be null? Otherwise, always on-heap access.
2421 bool can_access_non_heap = TypePtr::NULL_PTR->higher_equal(_gvn.type(base));
2422
2423 if (!can_access_non_heap) {
2424 decorators |= IN_HEAP;
2425 }
2426
2427 Node* val = is_store ? argument(4) : nullptr;
2428
2429 const TypePtr* adr_type = _gvn.type(adr)->isa_ptr();
2430 if (adr_type == TypePtr::NULL_PTR) {
2431 set_map(old_map);
2432 set_sp(old_sp);
2433 return false; // off-heap access with zero address
2434 }
2435
2436 // Try to categorize the address.
2437 Compile::AliasType* alias_type = C->alias_type(adr_type);
2438 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here");
2439
2440 if (alias_type->adr_type() == TypeInstPtr::KLASS ||
2441 alias_type->adr_type() == TypeAryPtr::RANGE) {
2442 set_map(old_map);
2443 set_sp(old_sp);
2444 return false; // not supported
2445 }
2446
2447 bool mismatched = false;
2448 BasicType bt = alias_type->basic_type();
2449 if (bt != T_ILLEGAL) {
2450 assert(alias_type->adr_type()->is_oopptr(), "should be on-heap access");
2451 if (bt == T_BYTE && adr_type->isa_aryptr()) {
2452 // Alias type doesn't differentiate between byte[] and boolean[]).
2453 // Use address type to get the element type.
2454 bt = adr_type->is_aryptr()->elem()->array_element_basic_type();
2455 }
2456 if (is_reference_type(bt, true)) {
2457 // accessing an array field with getReference is not a mismatch
2458 bt = T_OBJECT;
2459 }
2460 if ((bt == T_OBJECT) != (type == T_OBJECT)) {
2461 // Don't intrinsify mismatched object accesses
2462 set_map(old_map);
2463 set_sp(old_sp);
2464 return false;
2465 }
2466 mismatched = (bt != type);
2467 } else if (alias_type->adr_type()->isa_oopptr()) {
2468 mismatched = true; // conservatively mark all "wide" on-heap accesses as mismatched
2469 }
2470
2471 destruct_map_clone(old_map);
2472 assert(!mismatched || alias_type->adr_type()->is_oopptr(), "off-heap access can't be mismatched");
2473
2474 if (mismatched) {
2475 decorators |= C2_MISMATCHED;
2476 }
2477
2478 // First guess at the value type.
2479 const Type *value_type = Type::get_const_basic_type(type);
2480
2481 // Figure out the memory ordering.
2482 decorators |= mo_decorator_for_access_kind(kind);
2483
2484 if (!is_store && type == T_OBJECT) {
2485 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type);
2486 if (tjp != nullptr) {
2487 value_type = tjp;
2488 }
2489 }
2490
2491 receiver = null_check(receiver);
2492 if (stopped()) {
2493 return true;
2494 }
2495 // Heap pointers get a null-check from the interpreter,
2496 // as a courtesy. However, this is not guaranteed by Unsafe,
2497 // and it is not possible to fully distinguish unintended nulls
2498 // from intended ones in this API.
2499
2500 if (!is_store) {
2501 Node* p = nullptr;
2502 // Try to constant fold a load from a constant field
2503 ciField* field = alias_type->field();
2504 if (heap_base_oop != top() && field != nullptr && field->is_constant() && !mismatched) {
2505 // final or stable field
2506 p = make_constant_from_field(field, heap_base_oop);
2507 }
2508
2509 if (p == nullptr) { // Could not constant fold the load
2510 p = access_load_at(heap_base_oop, adr, adr_type, value_type, type, decorators);
2511 // Normalize the value returned by getBoolean in the following cases
2512 if (type == T_BOOLEAN &&
2513 (mismatched ||
2514 heap_base_oop == top() || // - heap_base_oop is null or
2515 (can_access_non_heap && field == nullptr)) // - heap_base_oop is potentially null
2516 // and the unsafe access is made to large offset
2517 // (i.e., larger than the maximum offset necessary for any
2518 // field access)
2519 ) {
2520 IdealKit ideal = IdealKit(this);
2521 #define __ ideal.
2522 IdealVariable normalized_result(ideal);
2523 __ declarations_done();
2524 __ set(normalized_result, p);
2525 __ if_then(p, BoolTest::ne, ideal.ConI(0));
2526 __ set(normalized_result, ideal.ConI(1));
2527 ideal.end_if();
2528 final_sync(ideal);
2529 p = __ value(normalized_result);
2530 #undef __
2531 }
2532 }
2533 if (type == T_ADDRESS) {
2534 p = gvn().transform(new CastP2XNode(nullptr, p));
2535 p = ConvX2UL(p);
2536 }
2537 // The load node has the control of the preceding MemBarCPUOrder. All
2538 // following nodes will have the control of the MemBarCPUOrder inserted at
2539 // the end of this method. So, pushing the load onto the stack at a later
2540 // point is fine.
2541 set_result(p);
2542 } else {
2543 if (bt == T_ADDRESS) {
2544 // Repackage the long as a pointer.
2545 val = ConvL2X(val);
2546 val = gvn().transform(new CastX2PNode(val));
2547 }
2548 access_store_at(heap_base_oop, adr, adr_type, val, value_type, type, decorators);
2549 }
2550
2551 return true;
2552 }
2553
2554 //----------------------------inline_unsafe_load_store----------------------------
2555 // This method serves a couple of different customers (depending on LoadStoreKind):
2556 //
2557 // LS_cmp_swap:
2558 //
2559 // boolean compareAndSetReference(Object o, long offset, Object expected, Object x);
2560 // boolean compareAndSetInt( Object o, long offset, int expected, int x);
2561 // boolean compareAndSetLong( Object o, long offset, long expected, long x);
2562 //
2563 // LS_cmp_swap_weak:
2564 //
2565 // boolean weakCompareAndSetReference( Object o, long offset, Object expected, Object x);
2566 // boolean weakCompareAndSetReferencePlain( Object o, long offset, Object expected, Object x);
2567 // boolean weakCompareAndSetReferenceAcquire(Object o, long offset, Object expected, Object x);
2568 // boolean weakCompareAndSetReferenceRelease(Object o, long offset, Object expected, Object x);
2569 //
2570 // boolean weakCompareAndSetInt( Object o, long offset, int expected, int x);
2571 // boolean weakCompareAndSetIntPlain( Object o, long offset, int expected, int x);
2572 // boolean weakCompareAndSetIntAcquire( Object o, long offset, int expected, int x);
2573 // boolean weakCompareAndSetIntRelease( Object o, long offset, int expected, int x);
2574 //
2575 // boolean weakCompareAndSetLong( Object o, long offset, long expected, long x);
2576 // boolean weakCompareAndSetLongPlain( Object o, long offset, long expected, long x);
2577 // boolean weakCompareAndSetLongAcquire( Object o, long offset, long expected, long x);
2578 // boolean weakCompareAndSetLongRelease( Object o, long offset, long expected, long x);
2579 //
2580 // LS_cmp_exchange:
2581 //
2582 // Object compareAndExchangeReferenceVolatile(Object o, long offset, Object expected, Object x);
2583 // Object compareAndExchangeReferenceAcquire( Object o, long offset, Object expected, Object x);
2584 // Object compareAndExchangeReferenceRelease( Object o, long offset, Object expected, Object x);
2585 //
2586 // Object compareAndExchangeIntVolatile( Object o, long offset, Object expected, Object x);
2587 // Object compareAndExchangeIntAcquire( Object o, long offset, Object expected, Object x);
2588 // Object compareAndExchangeIntRelease( Object o, long offset, Object expected, Object x);
2589 //
2590 // Object compareAndExchangeLongVolatile( Object o, long offset, Object expected, Object x);
2591 // Object compareAndExchangeLongAcquire( Object o, long offset, Object expected, Object x);
2592 // Object compareAndExchangeLongRelease( Object o, long offset, Object expected, Object x);
2593 //
2594 // LS_get_add:
2595 //
2596 // int getAndAddInt( Object o, long offset, int delta)
2597 // long getAndAddLong(Object o, long offset, long delta)
2598 //
2599 // LS_get_set:
2600 //
2601 // int getAndSet(Object o, long offset, int newValue)
2602 // long getAndSet(Object o, long offset, long newValue)
2603 // Object getAndSet(Object o, long offset, Object newValue)
2604 //
2605 bool LibraryCallKit::inline_unsafe_load_store(const BasicType type, const LoadStoreKind kind, const AccessKind access_kind) {
2606 // This basic scheme here is the same as inline_unsafe_access, but
2607 // differs in enough details that combining them would make the code
2608 // overly confusing. (This is a true fact! I originally combined
2609 // them, but even I was confused by it!) As much code/comments as
2610 // possible are retained from inline_unsafe_access though to make
2611 // the correspondences clearer. - dl
2612
2613 if (callee()->is_static()) return false; // caller must have the capability!
2614
2615 DecoratorSet decorators = C2_UNSAFE_ACCESS;
2616 decorators |= mo_decorator_for_access_kind(access_kind);
2617
2618 #ifndef PRODUCT
2619 BasicType rtype;
2620 {
2621 ResourceMark rm;
2622 // Check the signatures.
2623 ciSignature* sig = callee()->signature();
2624 rtype = sig->return_type()->basic_type();
2625 switch(kind) {
2626 case LS_get_add:
2627 case LS_get_set: {
2628 // Check the signatures.
2629 #ifdef ASSERT
2630 assert(rtype == type, "get and set must return the expected type");
2631 assert(sig->count() == 3, "get and set has 3 arguments");
2632 assert(sig->type_at(0)->basic_type() == T_OBJECT, "get and set base is object");
2633 assert(sig->type_at(1)->basic_type() == T_LONG, "get and set offset is long");
2634 assert(sig->type_at(2)->basic_type() == type, "get and set must take expected type as new value/delta");
2635 assert(access_kind == Volatile, "mo is not passed to intrinsic nodes in current implementation");
2636 #endif // ASSERT
2637 break;
2638 }
2639 case LS_cmp_swap:
2640 case LS_cmp_swap_weak: {
2641 // Check the signatures.
2642 #ifdef ASSERT
2643 assert(rtype == T_BOOLEAN, "CAS must return boolean");
2644 assert(sig->count() == 4, "CAS has 4 arguments");
2645 assert(sig->type_at(0)->basic_type() == T_OBJECT, "CAS base is object");
2646 assert(sig->type_at(1)->basic_type() == T_LONG, "CAS offset is long");
2647 #endif // ASSERT
2648 break;
2649 }
2650 case LS_cmp_exchange: {
2651 // Check the signatures.
2652 #ifdef ASSERT
2653 assert(rtype == type, "CAS must return the expected type");
2654 assert(sig->count() == 4, "CAS has 4 arguments");
2655 assert(sig->type_at(0)->basic_type() == T_OBJECT, "CAS base is object");
2656 assert(sig->type_at(1)->basic_type() == T_LONG, "CAS offset is long");
2657 #endif // ASSERT
2658 break;
2659 }
2660 default:
2661 ShouldNotReachHere();
2662 }
2663 }
2664 #endif //PRODUCT
2665
2666 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe".
2667
2668 // Get arguments:
2669 Node* receiver = nullptr;
2670 Node* base = nullptr;
2671 Node* offset = nullptr;
2672 Node* oldval = nullptr;
2673 Node* newval = nullptr;
2674 switch(kind) {
2675 case LS_cmp_swap:
2676 case LS_cmp_swap_weak:
2677 case LS_cmp_exchange: {
2678 const bool two_slot_type = type2size[type] == 2;
2679 receiver = argument(0); // type: oop
2680 base = argument(1); // type: oop
2681 offset = argument(2); // type: long
2682 oldval = argument(4); // type: oop, int, or long
2683 newval = argument(two_slot_type ? 6 : 5); // type: oop, int, or long
2684 break;
2685 }
2686 case LS_get_add:
2687 case LS_get_set: {
2688 receiver = argument(0); // type: oop
2689 base = argument(1); // type: oop
2690 offset = argument(2); // type: long
2691 oldval = nullptr;
2692 newval = argument(4); // type: oop, int, or long
2693 break;
2694 }
2695 default:
2696 ShouldNotReachHere();
2697 }
2698
2699 // Build field offset expression.
2700 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset
2701 // to be plain byte offsets, which are also the same as those accepted
2702 // by oopDesc::field_addr.
2703 assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled");
2704 // 32-bit machines ignore the high half of long offsets
2705 offset = ConvL2X(offset);
2706 // Save state and restore on bailout
2707 uint old_sp = sp();
2708 SafePointNode* old_map = clone_map();
2709 Node* adr = make_unsafe_address(base, offset,type, false);
2710 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr();
2711
2712 Compile::AliasType* alias_type = C->alias_type(adr_type);
2713 BasicType bt = alias_type->basic_type();
2714 if (bt != T_ILLEGAL &&
2715 (is_reference_type(bt) != (type == T_OBJECT))) {
2716 // Don't intrinsify mismatched object accesses.
2717 set_map(old_map);
2718 set_sp(old_sp);
2719 return false;
2720 }
2721
2722 destruct_map_clone(old_map);
2723
2724 // For CAS, unlike inline_unsafe_access, there seems no point in
2725 // trying to refine types. Just use the coarse types here.
2726 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here");
2727 const Type *value_type = Type::get_const_basic_type(type);
2728
2729 switch (kind) {
2730 case LS_get_set:
2731 case LS_cmp_exchange: {
2732 if (type == T_OBJECT) {
2733 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type);
2734 if (tjp != nullptr) {
2735 value_type = tjp;
2736 }
2737 }
2738 break;
2739 }
2740 case LS_cmp_swap:
2741 case LS_cmp_swap_weak:
2742 case LS_get_add:
2743 break;
2744 default:
2745 ShouldNotReachHere();
2746 }
2747
2748 // Null check receiver.
2749 receiver = null_check(receiver);
2750 if (stopped()) {
2751 return true;
2752 }
2753
2754 int alias_idx = C->get_alias_index(adr_type);
2755
2756 if (is_reference_type(type)) {
2757 decorators |= IN_HEAP | ON_UNKNOWN_OOP_REF;
2758
2759 // Transformation of a value which could be null pointer (CastPP #null)
2760 // could be delayed during Parse (for example, in adjust_map_after_if()).
2761 // Execute transformation here to avoid barrier generation in such case.
2762 if (_gvn.type(newval) == TypePtr::NULL_PTR)
2763 newval = _gvn.makecon(TypePtr::NULL_PTR);
2764
2765 if (oldval != nullptr && _gvn.type(oldval) == TypePtr::NULL_PTR) {
2766 // Refine the value to a null constant, when it is known to be null
2767 oldval = _gvn.makecon(TypePtr::NULL_PTR);
2768 }
2769 }
2770
2771 Node* result = nullptr;
2772 switch (kind) {
2773 case LS_cmp_exchange: {
2774 result = access_atomic_cmpxchg_val_at(base, adr, adr_type, alias_idx,
2775 oldval, newval, value_type, type, decorators);
2776 break;
2777 }
2778 case LS_cmp_swap_weak:
2779 decorators |= C2_WEAK_CMPXCHG;
2780 case LS_cmp_swap: {
2781 result = access_atomic_cmpxchg_bool_at(base, adr, adr_type, alias_idx,
2782 oldval, newval, value_type, type, decorators);
2783 break;
2784 }
2785 case LS_get_set: {
2786 result = access_atomic_xchg_at(base, adr, adr_type, alias_idx,
2787 newval, value_type, type, decorators);
2788 break;
2789 }
2790 case LS_get_add: {
2791 result = access_atomic_add_at(base, adr, adr_type, alias_idx,
2792 newval, value_type, type, decorators);
2793 break;
2794 }
2795 default:
2796 ShouldNotReachHere();
2797 }
2798
2799 assert(type2size[result->bottom_type()->basic_type()] == type2size[rtype], "result type should match");
2800 set_result(result);
2801 return true;
2802 }
2803
2804 bool LibraryCallKit::inline_unsafe_fence(vmIntrinsics::ID id) {
2805 // Regardless of form, don't allow previous ld/st to move down,
2806 // then issue acquire, release, or volatile mem_bar.
2807 insert_mem_bar(Op_MemBarCPUOrder);
2808 switch(id) {
2809 case vmIntrinsics::_loadFence:
2810 insert_mem_bar(Op_LoadFence);
2811 return true;
2812 case vmIntrinsics::_storeFence:
2813 insert_mem_bar(Op_StoreFence);
2814 return true;
2815 case vmIntrinsics::_storeStoreFence:
2816 insert_mem_bar(Op_StoreStoreFence);
2817 return true;
2818 case vmIntrinsics::_fullFence:
2819 insert_mem_bar(Op_MemBarVolatile);
2820 return true;
2821 default:
2822 fatal_unexpected_iid(id);
2823 return false;
2824 }
2825 }
2826
2827 bool LibraryCallKit::inline_onspinwait() {
2828 insert_mem_bar(Op_OnSpinWait);
2829 return true;
2830 }
2831
2832 bool LibraryCallKit::klass_needs_init_guard(Node* kls) {
2833 if (!kls->is_Con()) {
2834 return true;
2835 }
2836 const TypeInstKlassPtr* klsptr = kls->bottom_type()->isa_instklassptr();
2837 if (klsptr == nullptr) {
2838 return true;
2839 }
2840 ciInstanceKlass* ik = klsptr->instance_klass();
2841 // don't need a guard for a klass that is already initialized
2842 return !ik->is_initialized();
2843 }
2844
2845 //----------------------------inline_unsafe_writeback0-------------------------
2846 // public native void Unsafe.writeback0(long address)
2847 bool LibraryCallKit::inline_unsafe_writeback0() {
2848 if (!Matcher::has_match_rule(Op_CacheWB)) {
2849 return false;
2850 }
2851 #ifndef PRODUCT
2852 assert(Matcher::has_match_rule(Op_CacheWBPreSync), "found match rule for CacheWB but not CacheWBPreSync");
2853 assert(Matcher::has_match_rule(Op_CacheWBPostSync), "found match rule for CacheWB but not CacheWBPostSync");
2854 ciSignature* sig = callee()->signature();
2855 assert(sig->type_at(0)->basic_type() == T_LONG, "Unsafe_writeback0 address is long!");
2856 #endif
2857 null_check_receiver(); // null-check, then ignore
2858 Node *addr = argument(1);
2859 addr = new CastX2PNode(addr);
2860 addr = _gvn.transform(addr);
2861 Node *flush = new CacheWBNode(control(), memory(TypeRawPtr::BOTTOM), addr);
2862 flush = _gvn.transform(flush);
2863 set_memory(flush, TypeRawPtr::BOTTOM);
2864 return true;
2865 }
2866
2867 //----------------------------inline_unsafe_writeback0-------------------------
2868 // public native void Unsafe.writeback0(long address)
2869 bool LibraryCallKit::inline_unsafe_writebackSync0(bool is_pre) {
2870 if (is_pre && !Matcher::has_match_rule(Op_CacheWBPreSync)) {
2871 return false;
2872 }
2873 if (!is_pre && !Matcher::has_match_rule(Op_CacheWBPostSync)) {
2874 return false;
2875 }
2876 #ifndef PRODUCT
2877 assert(Matcher::has_match_rule(Op_CacheWB),
2878 (is_pre ? "found match rule for CacheWBPreSync but not CacheWB"
2879 : "found match rule for CacheWBPostSync but not CacheWB"));
2880
2881 #endif
2882 null_check_receiver(); // null-check, then ignore
2883 Node *sync;
2884 if (is_pre) {
2885 sync = new CacheWBPreSyncNode(control(), memory(TypeRawPtr::BOTTOM));
2886 } else {
2887 sync = new CacheWBPostSyncNode(control(), memory(TypeRawPtr::BOTTOM));
2888 }
2889 sync = _gvn.transform(sync);
2890 set_memory(sync, TypeRawPtr::BOTTOM);
2891 return true;
2892 }
2893
2894 //----------------------------inline_unsafe_allocate---------------------------
2895 // public native Object Unsafe.allocateInstance(Class<?> cls);
2896 bool LibraryCallKit::inline_unsafe_allocate() {
2897
2898 #if INCLUDE_JVMTI
2899 if (too_many_traps(Deoptimization::Reason_intrinsic)) {
2900 return false;
2901 }
2902 #endif //INCLUDE_JVMTI
2903
2904 if (callee()->is_static()) return false; // caller must have the capability!
2905
2906 null_check_receiver(); // null-check, then ignore
2907 Node* cls = null_check(argument(1));
2908 if (stopped()) return true;
2909
2910 Node* kls = load_klass_from_mirror(cls, false, nullptr, 0);
2911 kls = null_check(kls);
2912 if (stopped()) return true; // argument was like int.class
2913
2914 #if INCLUDE_JVMTI
2915 // Don't try to access new allocated obj in the intrinsic.
2916 // It causes perfomance issues even when jvmti event VmObjectAlloc is disabled.
2917 // Deoptimize and allocate in interpreter instead.
2918 Node* addr = makecon(TypeRawPtr::make((address) &JvmtiExport::_should_notify_object_alloc));
2919 Node* should_post_vm_object_alloc = make_load(this->control(), addr, TypeInt::INT, T_INT, MemNode::unordered);
2920 Node* chk = _gvn.transform(new CmpINode(should_post_vm_object_alloc, intcon(0)));
2921 Node* tst = _gvn.transform(new BoolNode(chk, BoolTest::eq));
2922 {
2923 BuildCutout unless(this, tst, PROB_MAX);
2924 uncommon_trap(Deoptimization::Reason_intrinsic,
2925 Deoptimization::Action_make_not_entrant);
2926 }
2927 if (stopped()) {
2928 return true;
2929 }
2930 #endif //INCLUDE_JVMTI
2931
2932 Node* test = nullptr;
2933 if (LibraryCallKit::klass_needs_init_guard(kls)) {
2934 // Note: The argument might still be an illegal value like
2935 // Serializable.class or Object[].class. The runtime will handle it.
2936 // But we must make an explicit check for initialization.
2937 Node* insp = basic_plus_adr(kls, in_bytes(InstanceKlass::init_state_offset()));
2938 // Use T_BOOLEAN for InstanceKlass::_init_state so the compiler
2939 // can generate code to load it as unsigned byte.
2940 Node* inst = make_load(nullptr, insp, TypeInt::UBYTE, T_BOOLEAN, MemNode::acquire);
2941 Node* bits = intcon(InstanceKlass::fully_initialized);
2942 test = _gvn.transform(new SubINode(inst, bits));
2943 // The 'test' is non-zero if we need to take a slow path.
2944 }
2945
2946 Node* obj = new_instance(kls, test);
2947 set_result(obj);
2948 return true;
2949 }
2950
2951 //------------------------inline_native_time_funcs--------------
2952 // inline code for System.currentTimeMillis() and System.nanoTime()
2953 // these have the same type and signature
2954 bool LibraryCallKit::inline_native_time_funcs(address funcAddr, const char* funcName) {
2955 const TypeFunc* tf = OptoRuntime::void_long_Type();
2956 const TypePtr* no_memory_effects = nullptr;
2957 Node* time = make_runtime_call(RC_LEAF, tf, funcAddr, funcName, no_memory_effects);
2958 Node* value = _gvn.transform(new ProjNode(time, TypeFunc::Parms+0));
2959 #ifdef ASSERT
2960 Node* value_top = _gvn.transform(new ProjNode(time, TypeFunc::Parms+1));
2961 assert(value_top == top(), "second value must be top");
2962 #endif
2963 set_result(value);
2964 return true;
2965 }
2966
2967
2968 #if INCLUDE_JVMTI
2969
2970 // When notifications are disabled then just update the VTMS transition bit and return.
2971 // Otherwise, the bit is updated in the given function call implementing JVMTI notification protocol.
2972 bool LibraryCallKit::inline_native_notify_jvmti_funcs(address funcAddr, const char* funcName, bool is_start, bool is_end) {
2973 if (!DoJVMTIVirtualThreadTransitions) {
2974 return true;
2975 }
2976 Node* vt_oop = _gvn.transform(must_be_not_null(argument(0), true)); // VirtualThread this argument
2977 IdealKit ideal(this);
2978
2979 Node* ONE = ideal.ConI(1);
2980 Node* hide = is_start ? ideal.ConI(0) : (is_end ? ideal.ConI(1) : _gvn.transform(argument(1)));
2981 Node* addr = makecon(TypeRawPtr::make((address)&JvmtiVTMSTransitionDisabler::_VTMS_notify_jvmti_events));
2982 Node* notify_jvmti_enabled = ideal.load(ideal.ctrl(), addr, TypeInt::BOOL, T_BOOLEAN, Compile::AliasIdxRaw);
2983
2984 ideal.if_then(notify_jvmti_enabled, BoolTest::eq, ONE); {
2985 sync_kit(ideal);
2986 // if notifyJvmti enabled then make a call to the given SharedRuntime function
2987 const TypeFunc* tf = OptoRuntime::notify_jvmti_vthread_Type();
2988 make_runtime_call(RC_NO_LEAF, tf, funcAddr, funcName, TypePtr::BOTTOM, vt_oop, hide);
2989 ideal.sync_kit(this);
2990 } ideal.else_(); {
2991 // set hide value to the VTMS transition bit in current JavaThread and VirtualThread object
2992 Node* thread = ideal.thread();
2993 Node* jt_addr = basic_plus_adr(thread, in_bytes(JavaThread::is_in_VTMS_transition_offset()));
2994 Node* vt_addr = basic_plus_adr(vt_oop, java_lang_Thread::is_in_VTMS_transition_offset());
2995
2996 sync_kit(ideal);
2997 access_store_at(nullptr, jt_addr, _gvn.type(jt_addr)->is_ptr(), hide, _gvn.type(hide), T_BOOLEAN, IN_NATIVE | MO_UNORDERED);
2998 access_store_at(nullptr, vt_addr, _gvn.type(vt_addr)->is_ptr(), hide, _gvn.type(hide), T_BOOLEAN, IN_NATIVE | MO_UNORDERED);
2999
3000 ideal.sync_kit(this);
3001 } ideal.end_if();
3002 final_sync(ideal);
3003
3004 return true;
3005 }
3006
3007 // Always update the is_disable_suspend bit.
3008 bool LibraryCallKit::inline_native_notify_jvmti_sync() {
3009 if (!DoJVMTIVirtualThreadTransitions) {
3010 return true;
3011 }
3012 IdealKit ideal(this);
3013
3014 {
3015 // unconditionally update the is_disable_suspend bit in current JavaThread
3016 Node* thread = ideal.thread();
3017 Node* arg = _gvn.transform(argument(0)); // argument for notification
3018 Node* addr = basic_plus_adr(thread, in_bytes(JavaThread::is_disable_suspend_offset()));
3019 const TypePtr *addr_type = _gvn.type(addr)->isa_ptr();
3020
3021 sync_kit(ideal);
3022 access_store_at(nullptr, addr, addr_type, arg, _gvn.type(arg), T_BOOLEAN, IN_NATIVE | MO_UNORDERED);
3023 ideal.sync_kit(this);
3024 }
3025 final_sync(ideal);
3026
3027 return true;
3028 }
3029
3030 #endif // INCLUDE_JVMTI
3031
3032 #ifdef JFR_HAVE_INTRINSICS
3033
3034 /**
3035 * if oop->klass != null
3036 * // normal class
3037 * epoch = _epoch_state ? 2 : 1
3038 * if oop->klass->trace_id & ((epoch << META_SHIFT) | epoch)) != epoch {
3039 * ... // enter slow path when the klass is first recorded or the epoch of JFR shifts
3040 * }
3041 * id = oop->klass->trace_id >> TRACE_ID_SHIFT // normal class path
3042 * else
3043 * // primitive class
3044 * if oop->array_klass != null
3045 * id = (oop->array_klass->trace_id >> TRACE_ID_SHIFT) + 1 // primitive class path
3046 * else
3047 * id = LAST_TYPE_ID + 1 // void class path
3048 * if (!signaled)
3049 * signaled = true
3050 */
3051 bool LibraryCallKit::inline_native_classID() {
3052 Node* cls = argument(0);
3053
3054 IdealKit ideal(this);
3055 #define __ ideal.
3056 IdealVariable result(ideal); __ declarations_done();
3057 Node* kls = _gvn.transform(LoadKlassNode::make(_gvn, immutable_memory(),
3058 basic_plus_adr(cls, java_lang_Class::klass_offset()),
3059 TypeRawPtr::BOTTOM, TypeInstKlassPtr::OBJECT_OR_NULL));
3060
3061
3062 __ if_then(kls, BoolTest::ne, null()); {
3063 Node* kls_trace_id_addr = basic_plus_adr(kls, in_bytes(KLASS_TRACE_ID_OFFSET));
3064 Node* kls_trace_id_raw = ideal.load(ideal.ctrl(), kls_trace_id_addr,TypeLong::LONG, T_LONG, Compile::AliasIdxRaw);
3065
3066 Node* epoch_address = makecon(TypeRawPtr::make(JfrIntrinsicSupport::epoch_address()));
3067 Node* epoch = ideal.load(ideal.ctrl(), epoch_address, TypeInt::BOOL, T_BOOLEAN, Compile::AliasIdxRaw);
3068 epoch = _gvn.transform(new LShiftLNode(longcon(1), epoch));
3069 Node* mask = _gvn.transform(new LShiftLNode(epoch, intcon(META_SHIFT)));
3070 mask = _gvn.transform(new OrLNode(mask, epoch));
3071 Node* kls_trace_id_raw_and_mask = _gvn.transform(new AndLNode(kls_trace_id_raw, mask));
3072
3073 float unlikely = PROB_UNLIKELY(0.999);
3074 __ if_then(kls_trace_id_raw_and_mask, BoolTest::ne, epoch, unlikely); {
3075 sync_kit(ideal);
3076 make_runtime_call(RC_LEAF,
3077 OptoRuntime::class_id_load_barrier_Type(),
3078 CAST_FROM_FN_PTR(address, JfrIntrinsicSupport::load_barrier),
3079 "class id load barrier",
3080 TypePtr::BOTTOM,
3081 kls);
3082 ideal.sync_kit(this);
3083 } __ end_if();
3084
3085 ideal.set(result, _gvn.transform(new URShiftLNode(kls_trace_id_raw, ideal.ConI(TRACE_ID_SHIFT))));
3086 } __ else_(); {
3087 Node* array_kls = _gvn.transform(LoadKlassNode::make(_gvn, immutable_memory(),
3088 basic_plus_adr(cls, java_lang_Class::array_klass_offset()),
3089 TypeRawPtr::BOTTOM, TypeInstKlassPtr::OBJECT_OR_NULL));
3090 __ if_then(array_kls, BoolTest::ne, null()); {
3091 Node* array_kls_trace_id_addr = basic_plus_adr(array_kls, in_bytes(KLASS_TRACE_ID_OFFSET));
3092 Node* array_kls_trace_id_raw = ideal.load(ideal.ctrl(), array_kls_trace_id_addr, TypeLong::LONG, T_LONG, Compile::AliasIdxRaw);
3093 Node* array_kls_trace_id = _gvn.transform(new URShiftLNode(array_kls_trace_id_raw, ideal.ConI(TRACE_ID_SHIFT)));
3094 ideal.set(result, _gvn.transform(new AddLNode(array_kls_trace_id, longcon(1))));
3095 } __ else_(); {
3096 // void class case
3097 ideal.set(result, _gvn.transform(longcon(LAST_TYPE_ID + 1)));
3098 } __ end_if();
3099
3100 Node* signaled_flag_address = makecon(TypeRawPtr::make(JfrIntrinsicSupport::signal_address()));
3101 Node* signaled = ideal.load(ideal.ctrl(), signaled_flag_address, TypeInt::BOOL, T_BOOLEAN, Compile::AliasIdxRaw, true, MemNode::acquire);
3102 __ if_then(signaled, BoolTest::ne, ideal.ConI(1)); {
3103 ideal.store(ideal.ctrl(), signaled_flag_address, ideal.ConI(1), T_BOOLEAN, Compile::AliasIdxRaw, MemNode::release, true);
3104 } __ end_if();
3105 } __ end_if();
3106
3107 final_sync(ideal);
3108 set_result(ideal.value(result));
3109 #undef __
3110 return true;
3111 }
3112
3113 //------------------------inline_native_jvm_commit------------------
3114 bool LibraryCallKit::inline_native_jvm_commit() {
3115 enum { _true_path = 1, _false_path = 2, PATH_LIMIT };
3116
3117 // Save input memory and i_o state.
3118 Node* input_memory_state = reset_memory();
3119 set_all_memory(input_memory_state);
3120 Node* input_io_state = i_o();
3121
3122 // TLS.
3123 Node* tls_ptr = _gvn.transform(new ThreadLocalNode());
3124 // Jfr java buffer.
3125 Node* java_buffer_offset = _gvn.transform(new AddPNode(top(), tls_ptr, _gvn.transform(MakeConX(in_bytes(JAVA_BUFFER_OFFSET_JFR)))));
3126 Node* java_buffer = _gvn.transform(new LoadPNode(control(), input_memory_state, java_buffer_offset, TypePtr::BOTTOM, TypeRawPtr::NOTNULL, MemNode::unordered));
3127 Node* java_buffer_pos_offset = _gvn.transform(new AddPNode(top(), java_buffer, _gvn.transform(MakeConX(in_bytes(JFR_BUFFER_POS_OFFSET)))));
3128
3129 // Load the current value of the notified field in the JfrThreadLocal.
3130 Node* notified_offset = basic_plus_adr(top(), tls_ptr, in_bytes(NOTIFY_OFFSET_JFR));
3131 Node* notified = make_load(control(), notified_offset, TypeInt::BOOL, T_BOOLEAN, MemNode::unordered);
3132
3133 // Test for notification.
3134 Node* notified_cmp = _gvn.transform(new CmpINode(notified, _gvn.intcon(1)));
3135 Node* test_notified = _gvn.transform(new BoolNode(notified_cmp, BoolTest::eq));
3136 IfNode* iff_notified = create_and_map_if(control(), test_notified, PROB_MIN, COUNT_UNKNOWN);
3137
3138 // True branch, is notified.
3139 Node* is_notified = _gvn.transform(new IfTrueNode(iff_notified));
3140 set_control(is_notified);
3141
3142 // Reset notified state.
3143 store_to_memory(control(), notified_offset, _gvn.intcon(0), T_BOOLEAN, MemNode::unordered);
3144 Node* notified_reset_memory = reset_memory();
3145
3146 // Iff notified, the return address of the commit method is the current position of the backing java buffer. This is used to reset the event writer.
3147 Node* current_pos_X = _gvn.transform(new LoadXNode(control(), input_memory_state, java_buffer_pos_offset, TypeRawPtr::NOTNULL, TypeX_X, MemNode::unordered));
3148 // Convert the machine-word to a long.
3149 Node* current_pos = _gvn.transform(ConvX2L(current_pos_X));
3150
3151 // False branch, not notified.
3152 Node* not_notified = _gvn.transform(new IfFalseNode(iff_notified));
3153 set_control(not_notified);
3154 set_all_memory(input_memory_state);
3155
3156 // Arg is the next position as a long.
3157 Node* arg = argument(0);
3158 // Convert long to machine-word.
3159 Node* next_pos_X = _gvn.transform(ConvL2X(arg));
3160
3161 // Store the next_position to the underlying jfr java buffer.
3162 store_to_memory(control(), java_buffer_pos_offset, next_pos_X, LP64_ONLY(T_LONG) NOT_LP64(T_INT), MemNode::release);
3163
3164 Node* commit_memory = reset_memory();
3165 set_all_memory(commit_memory);
3166
3167 // Now load the flags from off the java buffer and decide if the buffer is a lease. If so, it needs to be returned post-commit.
3168 Node* java_buffer_flags_offset = _gvn.transform(new AddPNode(top(), java_buffer, _gvn.transform(MakeConX(in_bytes(JFR_BUFFER_FLAGS_OFFSET)))));
3169 Node* flags = make_load(control(), java_buffer_flags_offset, TypeInt::UBYTE, T_BYTE, MemNode::unordered);
3170 Node* lease_constant = _gvn.transform(_gvn.intcon(4));
3171
3172 // And flags with lease constant.
3173 Node* lease = _gvn.transform(new AndINode(flags, lease_constant));
3174
3175 // Branch on lease to conditionalize returning the leased java buffer.
3176 Node* lease_cmp = _gvn.transform(new CmpINode(lease, lease_constant));
3177 Node* test_lease = _gvn.transform(new BoolNode(lease_cmp, BoolTest::eq));
3178 IfNode* iff_lease = create_and_map_if(control(), test_lease, PROB_MIN, COUNT_UNKNOWN);
3179
3180 // False branch, not a lease.
3181 Node* not_lease = _gvn.transform(new IfFalseNode(iff_lease));
3182
3183 // True branch, is lease.
3184 Node* is_lease = _gvn.transform(new IfTrueNode(iff_lease));
3185 set_control(is_lease);
3186
3187 // Make a runtime call, which can safepoint, to return the leased buffer. This updates both the JfrThreadLocal and the Java event writer oop.
3188 Node* call_return_lease = make_runtime_call(RC_NO_LEAF,
3189 OptoRuntime::void_void_Type(),
3190 SharedRuntime::jfr_return_lease(),
3191 "return_lease", TypePtr::BOTTOM);
3192 Node* call_return_lease_control = _gvn.transform(new ProjNode(call_return_lease, TypeFunc::Control));
3193
3194 RegionNode* lease_compare_rgn = new RegionNode(PATH_LIMIT);
3195 record_for_igvn(lease_compare_rgn);
3196 PhiNode* lease_compare_mem = new PhiNode(lease_compare_rgn, Type::MEMORY, TypePtr::BOTTOM);
3197 record_for_igvn(lease_compare_mem);
3198 PhiNode* lease_compare_io = new PhiNode(lease_compare_rgn, Type::ABIO);
3199 record_for_igvn(lease_compare_io);
3200 PhiNode* lease_result_value = new PhiNode(lease_compare_rgn, TypeLong::LONG);
3201 record_for_igvn(lease_result_value);
3202
3203 // Update control and phi nodes.
3204 lease_compare_rgn->init_req(_true_path, call_return_lease_control);
3205 lease_compare_rgn->init_req(_false_path, not_lease);
3206
3207 lease_compare_mem->init_req(_true_path, _gvn.transform(reset_memory()));
3208 lease_compare_mem->init_req(_false_path, commit_memory);
3209
3210 lease_compare_io->init_req(_true_path, i_o());
3211 lease_compare_io->init_req(_false_path, input_io_state);
3212
3213 lease_result_value->init_req(_true_path, null()); // if the lease was returned, return 0.
3214 lease_result_value->init_req(_false_path, arg); // if not lease, return new updated position.
3215
3216 RegionNode* result_rgn = new RegionNode(PATH_LIMIT);
3217 PhiNode* result_mem = new PhiNode(result_rgn, Type::MEMORY, TypePtr::BOTTOM);
3218 PhiNode* result_io = new PhiNode(result_rgn, Type::ABIO);
3219 PhiNode* result_value = new PhiNode(result_rgn, TypeLong::LONG);
3220
3221 // Update control and phi nodes.
3222 result_rgn->init_req(_true_path, is_notified);
3223 result_rgn->init_req(_false_path, _gvn.transform(lease_compare_rgn));
3224
3225 result_mem->init_req(_true_path, notified_reset_memory);
3226 result_mem->init_req(_false_path, _gvn.transform(lease_compare_mem));
3227
3228 result_io->init_req(_true_path, input_io_state);
3229 result_io->init_req(_false_path, _gvn.transform(lease_compare_io));
3230
3231 result_value->init_req(_true_path, current_pos);
3232 result_value->init_req(_false_path, _gvn.transform(lease_result_value));
3233
3234 // Set output state.
3235 set_control(_gvn.transform(result_rgn));
3236 set_all_memory(_gvn.transform(result_mem));
3237 set_i_o(_gvn.transform(result_io));
3238 set_result(result_rgn, result_value);
3239 return true;
3240 }
3241
3242 /*
3243 * The intrinsic is a model of this pseudo-code:
3244 *
3245 * JfrThreadLocal* const tl = Thread::jfr_thread_local()
3246 * jobject h_event_writer = tl->java_event_writer();
3247 * if (h_event_writer == nullptr) {
3248 * return nullptr;
3249 * }
3250 * oop threadObj = Thread::threadObj();
3251 * oop vthread = java_lang_Thread::vthread(threadObj);
3252 * traceid tid;
3253 * bool pinVirtualThread;
3254 * bool excluded;
3255 * if (vthread != threadObj) { // i.e. current thread is virtual
3256 * tid = java_lang_Thread::tid(vthread);
3257 * u2 vthread_epoch_raw = java_lang_Thread::jfr_epoch(vthread);
3258 * pinVirtualThread = VMContinuations;
3259 * excluded = vthread_epoch_raw & excluded_mask;
3260 * if (!excluded) {
3261 * traceid current_epoch = JfrTraceIdEpoch::current_generation();
3262 * u2 vthread_epoch = vthread_epoch_raw & epoch_mask;
3263 * if (vthread_epoch != current_epoch) {
3264 * write_checkpoint();
3265 * }
3266 * }
3267 * } else {
3268 * tid = java_lang_Thread::tid(threadObj);
3269 * u2 thread_epoch_raw = java_lang_Thread::jfr_epoch(threadObj);
3270 * pinVirtualThread = false;
3271 * excluded = thread_epoch_raw & excluded_mask;
3272 * }
3273 * oop event_writer = JNIHandles::resolve_non_null(h_event_writer);
3274 * traceid tid_in_event_writer = getField(event_writer, "threadID");
3275 * if (tid_in_event_writer != tid) {
3276 * setField(event_writer, "pinVirtualThread", pinVirtualThread);
3277 * setField(event_writer, "excluded", excluded);
3278 * setField(event_writer, "threadID", tid);
3279 * }
3280 * return event_writer
3281 */
3282 bool LibraryCallKit::inline_native_getEventWriter() {
3283 enum { _true_path = 1, _false_path = 2, PATH_LIMIT };
3284
3285 // Save input memory and i_o state.
3286 Node* input_memory_state = reset_memory();
3287 set_all_memory(input_memory_state);
3288 Node* input_io_state = i_o();
3289
3290 // The most significant bit of the u2 is used to denote thread exclusion
3291 Node* excluded_shift = _gvn.intcon(15);
3292 Node* excluded_mask = _gvn.intcon(1 << 15);
3293 // The epoch generation is the range [1-32767]
3294 Node* epoch_mask = _gvn.intcon(32767);
3295
3296 // TLS
3297 Node* tls_ptr = _gvn.transform(new ThreadLocalNode());
3298
3299 // Load the address of java event writer jobject handle from the jfr_thread_local structure.
3300 Node* jobj_ptr = basic_plus_adr(top(), tls_ptr, in_bytes(THREAD_LOCAL_WRITER_OFFSET_JFR));
3301
3302 // Load the eventwriter jobject handle.
3303 Node* jobj = make_load(control(), jobj_ptr, TypeRawPtr::BOTTOM, T_ADDRESS, MemNode::unordered);
3304
3305 // Null check the jobject handle.
3306 Node* jobj_cmp_null = _gvn.transform(new CmpPNode(jobj, null()));
3307 Node* test_jobj_not_equal_null = _gvn.transform(new BoolNode(jobj_cmp_null, BoolTest::ne));
3308 IfNode* iff_jobj_not_equal_null = create_and_map_if(control(), test_jobj_not_equal_null, PROB_MAX, COUNT_UNKNOWN);
3309
3310 // False path, jobj is null.
3311 Node* jobj_is_null = _gvn.transform(new IfFalseNode(iff_jobj_not_equal_null));
3312
3313 // True path, jobj is not null.
3314 Node* jobj_is_not_null = _gvn.transform(new IfTrueNode(iff_jobj_not_equal_null));
3315
3316 set_control(jobj_is_not_null);
3317
3318 // Load the threadObj for the CarrierThread.
3319 Node* threadObj = generate_current_thread(tls_ptr);
3320
3321 // Load the vthread.
3322 Node* vthread = generate_virtual_thread(tls_ptr);
3323
3324 // If vthread != threadObj, this is a virtual thread.
3325 Node* vthread_cmp_threadObj = _gvn.transform(new CmpPNode(vthread, threadObj));
3326 Node* test_vthread_not_equal_threadObj = _gvn.transform(new BoolNode(vthread_cmp_threadObj, BoolTest::ne));
3327 IfNode* iff_vthread_not_equal_threadObj =
3328 create_and_map_if(jobj_is_not_null, test_vthread_not_equal_threadObj, PROB_FAIR, COUNT_UNKNOWN);
3329
3330 // False branch, fallback to threadObj.
3331 Node* vthread_equal_threadObj = _gvn.transform(new IfFalseNode(iff_vthread_not_equal_threadObj));
3332 set_control(vthread_equal_threadObj);
3333
3334 // Load the tid field from the vthread object.
3335 Node* thread_obj_tid = load_field_from_object(threadObj, "tid", "J");
3336
3337 // Load the raw epoch value from the threadObj.
3338 Node* threadObj_epoch_offset = basic_plus_adr(threadObj, java_lang_Thread::jfr_epoch_offset());
3339 Node* threadObj_epoch_raw = access_load_at(threadObj, threadObj_epoch_offset,
3340 _gvn.type(threadObj_epoch_offset)->isa_ptr(),
3341 TypeInt::CHAR, T_CHAR,
3342 IN_HEAP | MO_UNORDERED | C2_MISMATCHED | C2_CONTROL_DEPENDENT_LOAD);
3343
3344 // Mask off the excluded information from the epoch.
3345 Node * threadObj_is_excluded = _gvn.transform(new AndINode(threadObj_epoch_raw, excluded_mask));
3346
3347 // True branch, this is a virtual thread.
3348 Node* vthread_not_equal_threadObj = _gvn.transform(new IfTrueNode(iff_vthread_not_equal_threadObj));
3349 set_control(vthread_not_equal_threadObj);
3350
3351 // Load the tid field from the vthread object.
3352 Node* vthread_tid = load_field_from_object(vthread, "tid", "J");
3353
3354 // Continuation support determines if a virtual thread should be pinned.
3355 Node* global_addr = makecon(TypeRawPtr::make((address)&VMContinuations));
3356 Node* continuation_support = make_load(control(), global_addr, TypeInt::BOOL, T_BOOLEAN, MemNode::unordered);
3357
3358 // Load the raw epoch value from the vthread.
3359 Node* vthread_epoch_offset = basic_plus_adr(vthread, java_lang_Thread::jfr_epoch_offset());
3360 Node* vthread_epoch_raw = access_load_at(vthread, vthread_epoch_offset, _gvn.type(vthread_epoch_offset)->is_ptr(),
3361 TypeInt::CHAR, T_CHAR,
3362 IN_HEAP | MO_UNORDERED | C2_MISMATCHED | C2_CONTROL_DEPENDENT_LOAD);
3363
3364 // Mask off the excluded information from the epoch.
3365 Node * vthread_is_excluded = _gvn.transform(new AndINode(vthread_epoch_raw, _gvn.transform(excluded_mask)));
3366
3367 // Branch on excluded to conditionalize updating the epoch for the virtual thread.
3368 Node* is_excluded_cmp = _gvn.transform(new CmpINode(vthread_is_excluded, _gvn.transform(excluded_mask)));
3369 Node* test_not_excluded = _gvn.transform(new BoolNode(is_excluded_cmp, BoolTest::ne));
3370 IfNode* iff_not_excluded = create_and_map_if(control(), test_not_excluded, PROB_MAX, COUNT_UNKNOWN);
3371
3372 // False branch, vthread is excluded, no need to write epoch info.
3373 Node* excluded = _gvn.transform(new IfFalseNode(iff_not_excluded));
3374
3375 // True branch, vthread is included, update epoch info.
3376 Node* included = _gvn.transform(new IfTrueNode(iff_not_excluded));
3377 set_control(included);
3378
3379 // Get epoch value.
3380 Node* epoch = _gvn.transform(new AndINode(vthread_epoch_raw, _gvn.transform(epoch_mask)));
3381
3382 // Load the current epoch generation. The value is unsigned 16-bit, so we type it as T_CHAR.
3383 Node* epoch_generation_address = makecon(TypeRawPtr::make(JfrIntrinsicSupport::epoch_generation_address()));
3384 Node* current_epoch_generation = make_load(control(), epoch_generation_address, TypeInt::CHAR, T_CHAR, MemNode::unordered);
3385
3386 // Compare the epoch in the vthread to the current epoch generation.
3387 Node* const epoch_cmp = _gvn.transform(new CmpUNode(current_epoch_generation, epoch));
3388 Node* test_epoch_not_equal = _gvn.transform(new BoolNode(epoch_cmp, BoolTest::ne));
3389 IfNode* iff_epoch_not_equal = create_and_map_if(control(), test_epoch_not_equal, PROB_FAIR, COUNT_UNKNOWN);
3390
3391 // False path, epoch is equal, checkpoint information is valid.
3392 Node* epoch_is_equal = _gvn.transform(new IfFalseNode(iff_epoch_not_equal));
3393
3394 // True path, epoch is not equal, write a checkpoint for the vthread.
3395 Node* epoch_is_not_equal = _gvn.transform(new IfTrueNode(iff_epoch_not_equal));
3396
3397 set_control(epoch_is_not_equal);
3398
3399 // Make a runtime call, which can safepoint, to write a checkpoint for the vthread for this epoch.
3400 // The call also updates the native thread local thread id and the vthread with the current epoch.
3401 Node* call_write_checkpoint = make_runtime_call(RC_NO_LEAF,
3402 OptoRuntime::jfr_write_checkpoint_Type(),
3403 SharedRuntime::jfr_write_checkpoint(),
3404 "write_checkpoint", TypePtr::BOTTOM);
3405 Node* call_write_checkpoint_control = _gvn.transform(new ProjNode(call_write_checkpoint, TypeFunc::Control));
3406
3407 // vthread epoch != current epoch
3408 RegionNode* epoch_compare_rgn = new RegionNode(PATH_LIMIT);
3409 record_for_igvn(epoch_compare_rgn);
3410 PhiNode* epoch_compare_mem = new PhiNode(epoch_compare_rgn, Type::MEMORY, TypePtr::BOTTOM);
3411 record_for_igvn(epoch_compare_mem);
3412 PhiNode* epoch_compare_io = new PhiNode(epoch_compare_rgn, Type::ABIO);
3413 record_for_igvn(epoch_compare_io);
3414
3415 // Update control and phi nodes.
3416 epoch_compare_rgn->init_req(_true_path, call_write_checkpoint_control);
3417 epoch_compare_rgn->init_req(_false_path, epoch_is_equal);
3418 epoch_compare_mem->init_req(_true_path, _gvn.transform(reset_memory()));
3419 epoch_compare_mem->init_req(_false_path, input_memory_state);
3420 epoch_compare_io->init_req(_true_path, i_o());
3421 epoch_compare_io->init_req(_false_path, input_io_state);
3422
3423 // excluded != true
3424 RegionNode* exclude_compare_rgn = new RegionNode(PATH_LIMIT);
3425 record_for_igvn(exclude_compare_rgn);
3426 PhiNode* exclude_compare_mem = new PhiNode(exclude_compare_rgn, Type::MEMORY, TypePtr::BOTTOM);
3427 record_for_igvn(exclude_compare_mem);
3428 PhiNode* exclude_compare_io = new PhiNode(exclude_compare_rgn, Type::ABIO);
3429 record_for_igvn(exclude_compare_io);
3430
3431 // Update control and phi nodes.
3432 exclude_compare_rgn->init_req(_true_path, _gvn.transform(epoch_compare_rgn));
3433 exclude_compare_rgn->init_req(_false_path, excluded);
3434 exclude_compare_mem->init_req(_true_path, _gvn.transform(epoch_compare_mem));
3435 exclude_compare_mem->init_req(_false_path, input_memory_state);
3436 exclude_compare_io->init_req(_true_path, _gvn.transform(epoch_compare_io));
3437 exclude_compare_io->init_req(_false_path, input_io_state);
3438
3439 // vthread != threadObj
3440 RegionNode* vthread_compare_rgn = new RegionNode(PATH_LIMIT);
3441 record_for_igvn(vthread_compare_rgn);
3442 PhiNode* vthread_compare_mem = new PhiNode(vthread_compare_rgn, Type::MEMORY, TypePtr::BOTTOM);
3443 PhiNode* vthread_compare_io = new PhiNode(vthread_compare_rgn, Type::ABIO);
3444 record_for_igvn(vthread_compare_io);
3445 PhiNode* tid = new PhiNode(vthread_compare_rgn, TypeLong::LONG);
3446 record_for_igvn(tid);
3447 PhiNode* exclusion = new PhiNode(vthread_compare_rgn, TypeInt::CHAR);
3448 record_for_igvn(exclusion);
3449 PhiNode* pinVirtualThread = new PhiNode(vthread_compare_rgn, TypeInt::BOOL);
3450 record_for_igvn(pinVirtualThread);
3451
3452 // Update control and phi nodes.
3453 vthread_compare_rgn->init_req(_true_path, _gvn.transform(exclude_compare_rgn));
3454 vthread_compare_rgn->init_req(_false_path, vthread_equal_threadObj);
3455 vthread_compare_mem->init_req(_true_path, _gvn.transform(exclude_compare_mem));
3456 vthread_compare_mem->init_req(_false_path, input_memory_state);
3457 vthread_compare_io->init_req(_true_path, _gvn.transform(exclude_compare_io));
3458 vthread_compare_io->init_req(_false_path, input_io_state);
3459 tid->init_req(_true_path, _gvn.transform(vthread_tid));
3460 tid->init_req(_false_path, _gvn.transform(thread_obj_tid));
3461 exclusion->init_req(_true_path, _gvn.transform(vthread_is_excluded));
3462 exclusion->init_req(_false_path, _gvn.transform(threadObj_is_excluded));
3463 pinVirtualThread->init_req(_true_path, _gvn.transform(continuation_support));
3464 pinVirtualThread->init_req(_false_path, _gvn.intcon(0));
3465
3466 // Update branch state.
3467 set_control(_gvn.transform(vthread_compare_rgn));
3468 set_all_memory(_gvn.transform(vthread_compare_mem));
3469 set_i_o(_gvn.transform(vthread_compare_io));
3470
3471 // Load the event writer oop by dereferencing the jobject handle.
3472 ciKlass* klass_EventWriter = env()->find_system_klass(ciSymbol::make("jdk/jfr/internal/event/EventWriter"));
3473 assert(klass_EventWriter->is_loaded(), "invariant");
3474 ciInstanceKlass* const instklass_EventWriter = klass_EventWriter->as_instance_klass();
3475 const TypeKlassPtr* const aklass = TypeKlassPtr::make(instklass_EventWriter);
3476 const TypeOopPtr* const xtype = aklass->as_instance_type();
3477 Node* jobj_untagged = _gvn.transform(new AddPNode(top(), jobj, _gvn.MakeConX(-JNIHandles::TypeTag::global)));
3478 Node* event_writer = access_load(jobj_untagged, xtype, T_OBJECT, IN_NATIVE | C2_CONTROL_DEPENDENT_LOAD);
3479
3480 // Load the current thread id from the event writer object.
3481 Node* const event_writer_tid = load_field_from_object(event_writer, "threadID", "J");
3482 // Get the field offset to, conditionally, store an updated tid value later.
3483 Node* const event_writer_tid_field = field_address_from_object(event_writer, "threadID", "J", false);
3484 // Get the field offset to, conditionally, store an updated exclusion value later.
3485 Node* const event_writer_excluded_field = field_address_from_object(event_writer, "excluded", "Z", false);
3486 // Get the field offset to, conditionally, store an updated pinVirtualThread value later.
3487 Node* const event_writer_pin_field = field_address_from_object(event_writer, "pinVirtualThread", "Z", false);
3488
3489 RegionNode* event_writer_tid_compare_rgn = new RegionNode(PATH_LIMIT);
3490 record_for_igvn(event_writer_tid_compare_rgn);
3491 PhiNode* event_writer_tid_compare_mem = new PhiNode(event_writer_tid_compare_rgn, Type::MEMORY, TypePtr::BOTTOM);
3492 record_for_igvn(event_writer_tid_compare_mem);
3493 PhiNode* event_writer_tid_compare_io = new PhiNode(event_writer_tid_compare_rgn, Type::ABIO);
3494 record_for_igvn(event_writer_tid_compare_io);
3495
3496 // Compare the current tid from the thread object to what is currently stored in the event writer object.
3497 Node* const tid_cmp = _gvn.transform(new CmpLNode(event_writer_tid, _gvn.transform(tid)));
3498 Node* test_tid_not_equal = _gvn.transform(new BoolNode(tid_cmp, BoolTest::ne));
3499 IfNode* iff_tid_not_equal = create_and_map_if(_gvn.transform(vthread_compare_rgn), test_tid_not_equal, PROB_FAIR, COUNT_UNKNOWN);
3500
3501 // False path, tids are the same.
3502 Node* tid_is_equal = _gvn.transform(new IfFalseNode(iff_tid_not_equal));
3503
3504 // True path, tid is not equal, need to update the tid in the event writer.
3505 Node* tid_is_not_equal = _gvn.transform(new IfTrueNode(iff_tid_not_equal));
3506 record_for_igvn(tid_is_not_equal);
3507
3508 // Store the pin state to the event writer.
3509 store_to_memory(tid_is_not_equal, event_writer_pin_field, _gvn.transform(pinVirtualThread), T_BOOLEAN, MemNode::unordered);
3510
3511 // Store the exclusion state to the event writer.
3512 Node* excluded_bool = _gvn.transform(new URShiftINode(_gvn.transform(exclusion), excluded_shift));
3513 store_to_memory(tid_is_not_equal, event_writer_excluded_field, excluded_bool, T_BOOLEAN, MemNode::unordered);
3514
3515 // Store the tid to the event writer.
3516 store_to_memory(tid_is_not_equal, event_writer_tid_field, tid, T_LONG, MemNode::unordered);
3517
3518 // Update control and phi nodes.
3519 event_writer_tid_compare_rgn->init_req(_true_path, tid_is_not_equal);
3520 event_writer_tid_compare_rgn->init_req(_false_path, tid_is_equal);
3521 event_writer_tid_compare_mem->init_req(_true_path, _gvn.transform(reset_memory()));
3522 event_writer_tid_compare_mem->init_req(_false_path, _gvn.transform(vthread_compare_mem));
3523 event_writer_tid_compare_io->init_req(_true_path, _gvn.transform(i_o()));
3524 event_writer_tid_compare_io->init_req(_false_path, _gvn.transform(vthread_compare_io));
3525
3526 // Result of top level CFG, Memory, IO and Value.
3527 RegionNode* result_rgn = new RegionNode(PATH_LIMIT);
3528 PhiNode* result_mem = new PhiNode(result_rgn, Type::MEMORY, TypePtr::BOTTOM);
3529 PhiNode* result_io = new PhiNode(result_rgn, Type::ABIO);
3530 PhiNode* result_value = new PhiNode(result_rgn, TypeInstPtr::BOTTOM);
3531
3532 // Result control.
3533 result_rgn->init_req(_true_path, _gvn.transform(event_writer_tid_compare_rgn));
3534 result_rgn->init_req(_false_path, jobj_is_null);
3535
3536 // Result memory.
3537 result_mem->init_req(_true_path, _gvn.transform(event_writer_tid_compare_mem));
3538 result_mem->init_req(_false_path, _gvn.transform(input_memory_state));
3539
3540 // Result IO.
3541 result_io->init_req(_true_path, _gvn.transform(event_writer_tid_compare_io));
3542 result_io->init_req(_false_path, _gvn.transform(input_io_state));
3543
3544 // Result value.
3545 result_value->init_req(_true_path, _gvn.transform(event_writer)); // return event writer oop
3546 result_value->init_req(_false_path, null()); // return null
3547
3548 // Set output state.
3549 set_control(_gvn.transform(result_rgn));
3550 set_all_memory(_gvn.transform(result_mem));
3551 set_i_o(_gvn.transform(result_io));
3552 set_result(result_rgn, result_value);
3553 return true;
3554 }
3555
3556 /*
3557 * The intrinsic is a model of this pseudo-code:
3558 *
3559 * JfrThreadLocal* const tl = thread->jfr_thread_local();
3560 * if (carrierThread != thread) { // is virtual thread
3561 * const u2 vthread_epoch_raw = java_lang_Thread::jfr_epoch(thread);
3562 * bool excluded = vthread_epoch_raw & excluded_mask;
3563 * Atomic::store(&tl->_contextual_tid, java_lang_Thread::tid(thread));
3564 * Atomic::store(&tl->_contextual_thread_excluded, is_excluded);
3565 * if (!excluded) {
3566 * const u2 vthread_epoch = vthread_epoch_raw & epoch_mask;
3567 * Atomic::store(&tl->_vthread_epoch, vthread_epoch);
3568 * }
3569 * Atomic::release_store(&tl->_vthread, true);
3570 * return;
3571 * }
3572 * Atomic::release_store(&tl->_vthread, false);
3573 */
3574 void LibraryCallKit::extend_setCurrentThread(Node* jt, Node* thread) {
3575 enum { _true_path = 1, _false_path = 2, PATH_LIMIT };
3576
3577 Node* input_memory_state = reset_memory();
3578 set_all_memory(input_memory_state);
3579
3580 // The most significant bit of the u2 is used to denote thread exclusion
3581 Node* excluded_mask = _gvn.intcon(1 << 15);
3582 // The epoch generation is the range [1-32767]
3583 Node* epoch_mask = _gvn.intcon(32767);
3584
3585 Node* const carrierThread = generate_current_thread(jt);
3586 // If thread != carrierThread, this is a virtual thread.
3587 Node* thread_cmp_carrierThread = _gvn.transform(new CmpPNode(thread, carrierThread));
3588 Node* test_thread_not_equal_carrierThread = _gvn.transform(new BoolNode(thread_cmp_carrierThread, BoolTest::ne));
3589 IfNode* iff_thread_not_equal_carrierThread =
3590 create_and_map_if(control(), test_thread_not_equal_carrierThread, PROB_FAIR, COUNT_UNKNOWN);
3591
3592 Node* vthread_offset = basic_plus_adr(jt, in_bytes(THREAD_LOCAL_OFFSET_JFR + VTHREAD_OFFSET_JFR));
3593
3594 // False branch, is carrierThread.
3595 Node* thread_equal_carrierThread = _gvn.transform(new IfFalseNode(iff_thread_not_equal_carrierThread));
3596 // Store release
3597 Node* vthread_false_memory = store_to_memory(thread_equal_carrierThread, vthread_offset, _gvn.intcon(0), T_BOOLEAN, MemNode::release, true);
3598
3599 set_all_memory(input_memory_state);
3600
3601 // True branch, is virtual thread.
3602 Node* thread_not_equal_carrierThread = _gvn.transform(new IfTrueNode(iff_thread_not_equal_carrierThread));
3603 set_control(thread_not_equal_carrierThread);
3604
3605 // Load the raw epoch value from the vthread.
3606 Node* epoch_offset = basic_plus_adr(thread, java_lang_Thread::jfr_epoch_offset());
3607 Node* epoch_raw = access_load_at(thread, epoch_offset, _gvn.type(epoch_offset)->is_ptr(), TypeInt::CHAR, T_CHAR,
3608 IN_HEAP | MO_UNORDERED | C2_MISMATCHED | C2_CONTROL_DEPENDENT_LOAD);
3609
3610 // Mask off the excluded information from the epoch.
3611 Node * const is_excluded = _gvn.transform(new AndINode(epoch_raw, _gvn.transform(excluded_mask)));
3612
3613 // Load the tid field from the thread.
3614 Node* tid = load_field_from_object(thread, "tid", "J");
3615
3616 // Store the vthread tid to the jfr thread local.
3617 Node* thread_id_offset = basic_plus_adr(jt, in_bytes(THREAD_LOCAL_OFFSET_JFR + VTHREAD_ID_OFFSET_JFR));
3618 Node* tid_memory = store_to_memory(control(), thread_id_offset, tid, T_LONG, MemNode::unordered, true);
3619
3620 // Branch is_excluded to conditionalize updating the epoch .
3621 Node* excluded_cmp = _gvn.transform(new CmpINode(is_excluded, _gvn.transform(excluded_mask)));
3622 Node* test_excluded = _gvn.transform(new BoolNode(excluded_cmp, BoolTest::eq));
3623 IfNode* iff_excluded = create_and_map_if(control(), test_excluded, PROB_MIN, COUNT_UNKNOWN);
3624
3625 // True branch, vthread is excluded, no need to write epoch info.
3626 Node* excluded = _gvn.transform(new IfTrueNode(iff_excluded));
3627 set_control(excluded);
3628 Node* vthread_is_excluded = _gvn.intcon(1);
3629
3630 // False branch, vthread is included, update epoch info.
3631 Node* included = _gvn.transform(new IfFalseNode(iff_excluded));
3632 set_control(included);
3633 Node* vthread_is_included = _gvn.intcon(0);
3634
3635 // Get epoch value.
3636 Node* epoch = _gvn.transform(new AndINode(epoch_raw, _gvn.transform(epoch_mask)));
3637
3638 // Store the vthread epoch to the jfr thread local.
3639 Node* vthread_epoch_offset = basic_plus_adr(jt, in_bytes(THREAD_LOCAL_OFFSET_JFR + VTHREAD_EPOCH_OFFSET_JFR));
3640 Node* included_memory = store_to_memory(control(), vthread_epoch_offset, epoch, T_CHAR, MemNode::unordered, true);
3641
3642 RegionNode* excluded_rgn = new RegionNode(PATH_LIMIT);
3643 record_for_igvn(excluded_rgn);
3644 PhiNode* excluded_mem = new PhiNode(excluded_rgn, Type::MEMORY, TypePtr::BOTTOM);
3645 record_for_igvn(excluded_mem);
3646 PhiNode* exclusion = new PhiNode(excluded_rgn, TypeInt::BOOL);
3647 record_for_igvn(exclusion);
3648
3649 // Merge the excluded control and memory.
3650 excluded_rgn->init_req(_true_path, excluded);
3651 excluded_rgn->init_req(_false_path, included);
3652 excluded_mem->init_req(_true_path, tid_memory);
3653 excluded_mem->init_req(_false_path, included_memory);
3654 exclusion->init_req(_true_path, _gvn.transform(vthread_is_excluded));
3655 exclusion->init_req(_false_path, _gvn.transform(vthread_is_included));
3656
3657 // Set intermediate state.
3658 set_control(_gvn.transform(excluded_rgn));
3659 set_all_memory(excluded_mem);
3660
3661 // Store the vthread exclusion state to the jfr thread local.
3662 Node* thread_local_excluded_offset = basic_plus_adr(jt, in_bytes(THREAD_LOCAL_OFFSET_JFR + VTHREAD_EXCLUDED_OFFSET_JFR));
3663 store_to_memory(control(), thread_local_excluded_offset, _gvn.transform(exclusion), T_BOOLEAN, MemNode::unordered, true);
3664
3665 // Store release
3666 Node * vthread_true_memory = store_to_memory(control(), vthread_offset, _gvn.intcon(1), T_BOOLEAN, MemNode::release, true);
3667
3668 RegionNode* thread_compare_rgn = new RegionNode(PATH_LIMIT);
3669 record_for_igvn(thread_compare_rgn);
3670 PhiNode* thread_compare_mem = new PhiNode(thread_compare_rgn, Type::MEMORY, TypePtr::BOTTOM);
3671 record_for_igvn(thread_compare_mem);
3672 PhiNode* vthread = new PhiNode(thread_compare_rgn, TypeInt::BOOL);
3673 record_for_igvn(vthread);
3674
3675 // Merge the thread_compare control and memory.
3676 thread_compare_rgn->init_req(_true_path, control());
3677 thread_compare_rgn->init_req(_false_path, thread_equal_carrierThread);
3678 thread_compare_mem->init_req(_true_path, vthread_true_memory);
3679 thread_compare_mem->init_req(_false_path, vthread_false_memory);
3680
3681 // Set output state.
3682 set_control(_gvn.transform(thread_compare_rgn));
3683 set_all_memory(_gvn.transform(thread_compare_mem));
3684 }
3685
3686 #endif // JFR_HAVE_INTRINSICS
3687
3688 //------------------------inline_native_currentCarrierThread------------------
3689 bool LibraryCallKit::inline_native_currentCarrierThread() {
3690 Node* junk = nullptr;
3691 set_result(generate_current_thread(junk));
3692 return true;
3693 }
3694
3695 //------------------------inline_native_currentThread------------------
3696 bool LibraryCallKit::inline_native_currentThread() {
3697 Node* junk = nullptr;
3698 set_result(generate_virtual_thread(junk));
3699 return true;
3700 }
3701
3702 //------------------------inline_native_setVthread------------------
3703 bool LibraryCallKit::inline_native_setCurrentThread() {
3704 assert(C->method()->changes_current_thread(),
3705 "method changes current Thread but is not annotated ChangesCurrentThread");
3706 Node* arr = argument(1);
3707 Node* thread = _gvn.transform(new ThreadLocalNode());
3708 Node* p = basic_plus_adr(top()/*!oop*/, thread, in_bytes(JavaThread::vthread_offset()));
3709 Node* thread_obj_handle
3710 = make_load(nullptr, p, p->bottom_type()->is_ptr(), T_OBJECT, MemNode::unordered);
3711 thread_obj_handle = _gvn.transform(thread_obj_handle);
3712 const TypePtr *adr_type = _gvn.type(thread_obj_handle)->isa_ptr();
3713 access_store_at(nullptr, thread_obj_handle, adr_type, arr, _gvn.type(arr), T_OBJECT, IN_NATIVE | MO_UNORDERED);
3714
3715 // Change the _monitor_owner_id of the JavaThread
3716 Node* tid = load_field_from_object(arr, "tid", "J");
3717 Node* monitor_owner_id_offset = basic_plus_adr(thread, in_bytes(JavaThread::monitor_owner_id_offset()));
3718 store_to_memory(control(), monitor_owner_id_offset, tid, T_LONG, MemNode::unordered, true);
3719
3720 JFR_ONLY(extend_setCurrentThread(thread, arr);)
3721 return true;
3722 }
3723
3724 const Type* LibraryCallKit::scopedValueCache_type() {
3725 ciKlass* objects_klass = ciObjArrayKlass::make(env()->Object_klass());
3726 const TypeOopPtr* etype = TypeOopPtr::make_from_klass(env()->Object_klass());
3727 const TypeAry* arr0 = TypeAry::make(etype, TypeInt::POS);
3728
3729 // Because we create the scopedValue cache lazily we have to make the
3730 // type of the result BotPTR.
3731 bool xk = etype->klass_is_exact();
3732 const Type* objects_type = TypeAryPtr::make(TypePtr::BotPTR, arr0, objects_klass, xk, 0);
3733 return objects_type;
3734 }
3735
3736 Node* LibraryCallKit::scopedValueCache_helper() {
3737 Node* thread = _gvn.transform(new ThreadLocalNode());
3738 Node* p = basic_plus_adr(top()/*!oop*/, thread, in_bytes(JavaThread::scopedValueCache_offset()));
3739 // We cannot use immutable_memory() because we might flip onto a
3740 // different carrier thread, at which point we'll need to use that
3741 // carrier thread's cache.
3742 // return _gvn.transform(LoadNode::make(_gvn, nullptr, immutable_memory(), p, p->bottom_type()->is_ptr(),
3743 // TypeRawPtr::NOTNULL, T_ADDRESS, MemNode::unordered));
3744 return make_load(nullptr, p, p->bottom_type()->is_ptr(), T_ADDRESS, MemNode::unordered);
3745 }
3746
3747 //------------------------inline_native_scopedValueCache------------------
3748 bool LibraryCallKit::inline_native_scopedValueCache() {
3749 Node* cache_obj_handle = scopedValueCache_helper();
3750 const Type* objects_type = scopedValueCache_type();
3751 set_result(access_load(cache_obj_handle, objects_type, T_OBJECT, IN_NATIVE));
3752
3753 return true;
3754 }
3755
3756 //------------------------inline_native_setScopedValueCache------------------
3757 bool LibraryCallKit::inline_native_setScopedValueCache() {
3758 Node* arr = argument(0);
3759 Node* cache_obj_handle = scopedValueCache_helper();
3760 const Type* objects_type = scopedValueCache_type();
3761
3762 const TypePtr *adr_type = _gvn.type(cache_obj_handle)->isa_ptr();
3763 access_store_at(nullptr, cache_obj_handle, adr_type, arr, objects_type, T_OBJECT, IN_NATIVE | MO_UNORDERED);
3764
3765 return true;
3766 }
3767
3768 //------------------------inline_native_Continuation_pin and unpin-----------
3769
3770 // Shared implementation routine for both pin and unpin.
3771 bool LibraryCallKit::inline_native_Continuation_pinning(bool unpin) {
3772 enum { _true_path = 1, _false_path = 2, PATH_LIMIT };
3773
3774 // Save input memory.
3775 Node* input_memory_state = reset_memory();
3776 set_all_memory(input_memory_state);
3777
3778 // TLS
3779 Node* tls_ptr = _gvn.transform(new ThreadLocalNode());
3780 Node* last_continuation_offset = basic_plus_adr(top(), tls_ptr, in_bytes(JavaThread::cont_entry_offset()));
3781 Node* last_continuation = make_load(control(), last_continuation_offset, last_continuation_offset->get_ptr_type(), T_ADDRESS, MemNode::unordered);
3782
3783 // Null check the last continuation object.
3784 Node* continuation_cmp_null = _gvn.transform(new CmpPNode(last_continuation, null()));
3785 Node* test_continuation_not_equal_null = _gvn.transform(new BoolNode(continuation_cmp_null, BoolTest::ne));
3786 IfNode* iff_continuation_not_equal_null = create_and_map_if(control(), test_continuation_not_equal_null, PROB_MAX, COUNT_UNKNOWN);
3787
3788 // False path, last continuation is null.
3789 Node* continuation_is_null = _gvn.transform(new IfFalseNode(iff_continuation_not_equal_null));
3790
3791 // True path, last continuation is not null.
3792 Node* continuation_is_not_null = _gvn.transform(new IfTrueNode(iff_continuation_not_equal_null));
3793
3794 set_control(continuation_is_not_null);
3795
3796 // Load the pin count from the last continuation.
3797 Node* pin_count_offset = basic_plus_adr(top(), last_continuation, in_bytes(ContinuationEntry::pin_count_offset()));
3798 Node* pin_count = make_load(control(), pin_count_offset, TypeInt::INT, T_INT, MemNode::unordered);
3799
3800 // The loaded pin count is compared against a context specific rhs for over/underflow detection.
3801 Node* pin_count_rhs;
3802 if (unpin) {
3803 pin_count_rhs = _gvn.intcon(0);
3804 } else {
3805 pin_count_rhs = _gvn.intcon(UINT32_MAX);
3806 }
3807 Node* pin_count_cmp = _gvn.transform(new CmpUNode(_gvn.transform(pin_count), pin_count_rhs));
3808 Node* test_pin_count_over_underflow = _gvn.transform(new BoolNode(pin_count_cmp, BoolTest::eq));
3809 IfNode* iff_pin_count_over_underflow = create_and_map_if(control(), test_pin_count_over_underflow, PROB_MIN, COUNT_UNKNOWN);
3810
3811 // True branch, pin count over/underflow.
3812 Node* pin_count_over_underflow = _gvn.transform(new IfTrueNode(iff_pin_count_over_underflow));
3813 {
3814 // Trap (but not deoptimize (Action_none)) and continue in the interpreter
3815 // which will throw IllegalStateException for pin count over/underflow.
3816 // No memory changed so far - we can use memory create by reset_memory()
3817 // at the beginning of this intrinsic. No need to call reset_memory() again.
3818 PreserveJVMState pjvms(this);
3819 set_control(pin_count_over_underflow);
3820 uncommon_trap(Deoptimization::Reason_intrinsic,
3821 Deoptimization::Action_none);
3822 assert(stopped(), "invariant");
3823 }
3824
3825 // False branch, no pin count over/underflow. Increment or decrement pin count and store back.
3826 Node* valid_pin_count = _gvn.transform(new IfFalseNode(iff_pin_count_over_underflow));
3827 set_control(valid_pin_count);
3828
3829 Node* next_pin_count;
3830 if (unpin) {
3831 next_pin_count = _gvn.transform(new SubINode(pin_count, _gvn.intcon(1)));
3832 } else {
3833 next_pin_count = _gvn.transform(new AddINode(pin_count, _gvn.intcon(1)));
3834 }
3835
3836 store_to_memory(control(), pin_count_offset, next_pin_count, T_INT, MemNode::unordered);
3837
3838 // Result of top level CFG and Memory.
3839 RegionNode* result_rgn = new RegionNode(PATH_LIMIT);
3840 record_for_igvn(result_rgn);
3841 PhiNode* result_mem = new PhiNode(result_rgn, Type::MEMORY, TypePtr::BOTTOM);
3842 record_for_igvn(result_mem);
3843
3844 result_rgn->init_req(_true_path, _gvn.transform(valid_pin_count));
3845 result_rgn->init_req(_false_path, _gvn.transform(continuation_is_null));
3846 result_mem->init_req(_true_path, _gvn.transform(reset_memory()));
3847 result_mem->init_req(_false_path, _gvn.transform(input_memory_state));
3848
3849 // Set output state.
3850 set_control(_gvn.transform(result_rgn));
3851 set_all_memory(_gvn.transform(result_mem));
3852
3853 return true;
3854 }
3855
3856 //---------------------------load_mirror_from_klass----------------------------
3857 // Given a klass oop, load its java mirror (a java.lang.Class oop).
3858 Node* LibraryCallKit::load_mirror_from_klass(Node* klass) {
3859 Node* p = basic_plus_adr(klass, in_bytes(Klass::java_mirror_offset()));
3860 Node* load = make_load(nullptr, p, TypeRawPtr::NOTNULL, T_ADDRESS, MemNode::unordered);
3861 // mirror = ((OopHandle)mirror)->resolve();
3862 return access_load(load, TypeInstPtr::MIRROR, T_OBJECT, IN_NATIVE);
3863 }
3864
3865 //-----------------------load_klass_from_mirror_common-------------------------
3866 // Given a java mirror (a java.lang.Class oop), load its corresponding klass oop.
3867 // Test the klass oop for null (signifying a primitive Class like Integer.TYPE),
3868 // and branch to the given path on the region.
3869 // If never_see_null, take an uncommon trap on null, so we can optimistically
3870 // compile for the non-null case.
3871 // If the region is null, force never_see_null = true.
3872 Node* LibraryCallKit::load_klass_from_mirror_common(Node* mirror,
3873 bool never_see_null,
3874 RegionNode* region,
3875 int null_path,
3876 int offset) {
3877 if (region == nullptr) never_see_null = true;
3878 Node* p = basic_plus_adr(mirror, offset);
3879 const TypeKlassPtr* kls_type = TypeInstKlassPtr::OBJECT_OR_NULL;
3880 Node* kls = _gvn.transform(LoadKlassNode::make(_gvn, immutable_memory(), p, TypeRawPtr::BOTTOM, kls_type));
3881 Node* null_ctl = top();
3882 kls = null_check_oop(kls, &null_ctl, never_see_null);
3883 if (region != nullptr) {
3884 // Set region->in(null_path) if the mirror is a primitive (e.g, int.class).
3885 region->init_req(null_path, null_ctl);
3886 } else {
3887 assert(null_ctl == top(), "no loose ends");
3888 }
3889 return kls;
3890 }
3891
3892 //--------------------(inline_native_Class_query helpers)---------------------
3893 // Use this for JVM_ACC_INTERFACE.
3894 // Fall through if (mods & mask) == bits, take the guard otherwise.
3895 Node* LibraryCallKit::generate_klass_flags_guard(Node* kls, int modifier_mask, int modifier_bits, RegionNode* region,
3896 ByteSize offset, const Type* type, BasicType bt) {
3897 // Branch around if the given klass has the given modifier bit set.
3898 // Like generate_guard, adds a new path onto the region.
3899 Node* modp = basic_plus_adr(kls, in_bytes(offset));
3900 Node* mods = make_load(nullptr, modp, type, bt, MemNode::unordered);
3901 Node* mask = intcon(modifier_mask);
3902 Node* bits = intcon(modifier_bits);
3903 Node* mbit = _gvn.transform(new AndINode(mods, mask));
3904 Node* cmp = _gvn.transform(new CmpINode(mbit, bits));
3905 Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::ne));
3906 return generate_fair_guard(bol, region);
3907 }
3908 Node* LibraryCallKit::generate_interface_guard(Node* kls, RegionNode* region) {
3909 return generate_klass_flags_guard(kls, JVM_ACC_INTERFACE, 0, region,
3910 Klass::access_flags_offset(), TypeInt::CHAR, T_CHAR);
3911 }
3912
3913 // Use this for testing if Klass is_hidden, has_finalizer, and is_cloneable_fast.
3914 Node* LibraryCallKit::generate_misc_flags_guard(Node* kls, int modifier_mask, int modifier_bits, RegionNode* region) {
3915 return generate_klass_flags_guard(kls, modifier_mask, modifier_bits, region,
3916 Klass::misc_flags_offset(), TypeInt::UBYTE, T_BOOLEAN);
3917 }
3918
3919 Node* LibraryCallKit::generate_hidden_class_guard(Node* kls, RegionNode* region) {
3920 return generate_misc_flags_guard(kls, KlassFlags::_misc_is_hidden_class, 0, region);
3921 }
3922
3923 //-------------------------inline_native_Class_query-------------------
3924 bool LibraryCallKit::inline_native_Class_query(vmIntrinsics::ID id) {
3925 const Type* return_type = TypeInt::BOOL;
3926 Node* prim_return_value = top(); // what happens if it's a primitive class?
3927 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check);
3928 bool expect_prim = false; // most of these guys expect to work on refs
3929
3930 enum { _normal_path = 1, _prim_path = 2, PATH_LIMIT };
3931
3932 Node* mirror = argument(0);
3933 Node* obj = top();
3934
3935 switch (id) {
3936 case vmIntrinsics::_isInstance:
3937 // nothing is an instance of a primitive type
3938 prim_return_value = intcon(0);
3939 obj = argument(1);
3940 break;
3941 case vmIntrinsics::_isHidden:
3942 prim_return_value = intcon(0);
3943 break;
3944 case vmIntrinsics::_getSuperclass:
3945 prim_return_value = null();
3946 return_type = TypeInstPtr::MIRROR->cast_to_ptr_type(TypePtr::BotPTR);
3947 break;
3948 case vmIntrinsics::_getClassAccessFlags:
3949 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
3950 return_type = TypeInt::CHAR;
3951 break;
3952 default:
3953 fatal_unexpected_iid(id);
3954 break;
3955 }
3956
3957 const TypeInstPtr* mirror_con = _gvn.type(mirror)->isa_instptr();
3958 if (mirror_con == nullptr) return false; // cannot happen?
3959
3960 #ifndef PRODUCT
3961 if (C->print_intrinsics() || C->print_inlining()) {
3962 ciType* k = mirror_con->java_mirror_type();
3963 if (k) {
3964 tty->print("Inlining %s on constant Class ", vmIntrinsics::name_at(intrinsic_id()));
3965 k->print_name();
3966 tty->cr();
3967 }
3968 }
3969 #endif
3970
3971 // Null-check the mirror, and the mirror's klass ptr (in case it is a primitive).
3972 RegionNode* region = new RegionNode(PATH_LIMIT);
3973 record_for_igvn(region);
3974 PhiNode* phi = new PhiNode(region, return_type);
3975
3976 // The mirror will never be null of Reflection.getClassAccessFlags, however
3977 // it may be null for Class.isInstance or Class.getModifiers. Throw a NPE
3978 // if it is. See bug 4774291.
3979
3980 // For Reflection.getClassAccessFlags(), the null check occurs in
3981 // the wrong place; see inline_unsafe_access(), above, for a similar
3982 // situation.
3983 mirror = null_check(mirror);
3984 // If mirror or obj is dead, only null-path is taken.
3985 if (stopped()) return true;
3986
3987 if (expect_prim) never_see_null = false; // expect nulls (meaning prims)
3988
3989 // Now load the mirror's klass metaobject, and null-check it.
3990 // Side-effects region with the control path if the klass is null.
3991 Node* kls = load_klass_from_mirror(mirror, never_see_null, region, _prim_path);
3992 // If kls is null, we have a primitive mirror.
3993 phi->init_req(_prim_path, prim_return_value);
3994 if (stopped()) { set_result(region, phi); return true; }
3995 bool safe_for_replace = (region->in(_prim_path) == top());
3996
3997 Node* p; // handy temp
3998 Node* null_ctl;
3999
4000 // Now that we have the non-null klass, we can perform the real query.
4001 // For constant classes, the query will constant-fold in LoadNode::Value.
4002 Node* query_value = top();
4003 switch (id) {
4004 case vmIntrinsics::_isInstance:
4005 // nothing is an instance of a primitive type
4006 query_value = gen_instanceof(obj, kls, safe_for_replace);
4007 break;
4008
4009 case vmIntrinsics::_isHidden:
4010 // (To verify this code sequence, check the asserts in JVM_IsHiddenClass.)
4011 if (generate_hidden_class_guard(kls, region) != nullptr)
4012 // A guard was added. If the guard is taken, it was an hidden class.
4013 phi->add_req(intcon(1));
4014 // If we fall through, it's a plain class.
4015 query_value = intcon(0);
4016 break;
4017
4018
4019 case vmIntrinsics::_getSuperclass:
4020 // The rules here are somewhat unfortunate, but we can still do better
4021 // with random logic than with a JNI call.
4022 // Interfaces store null or Object as _super, but must report null.
4023 // Arrays store an intermediate super as _super, but must report Object.
4024 // Other types can report the actual _super.
4025 // (To verify this code sequence, check the asserts in JVM_IsInterface.)
4026 if (generate_interface_guard(kls, region) != nullptr)
4027 // A guard was added. If the guard is taken, it was an interface.
4028 phi->add_req(null());
4029 if (generate_array_guard(kls, region) != nullptr)
4030 // A guard was added. If the guard is taken, it was an array.
4031 phi->add_req(makecon(TypeInstPtr::make(env()->Object_klass()->java_mirror())));
4032 // If we fall through, it's a plain class. Get its _super.
4033 p = basic_plus_adr(kls, in_bytes(Klass::super_offset()));
4034 kls = _gvn.transform(LoadKlassNode::make(_gvn, immutable_memory(), p, TypeRawPtr::BOTTOM, TypeInstKlassPtr::OBJECT_OR_NULL));
4035 null_ctl = top();
4036 kls = null_check_oop(kls, &null_ctl);
4037 if (null_ctl != top()) {
4038 // If the guard is taken, Object.superClass is null (both klass and mirror).
4039 region->add_req(null_ctl);
4040 phi ->add_req(null());
4041 }
4042 if (!stopped()) {
4043 query_value = load_mirror_from_klass(kls);
4044 }
4045 break;
4046
4047 case vmIntrinsics::_getClassAccessFlags:
4048 p = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset()));
4049 query_value = make_load(nullptr, p, TypeInt::CHAR, T_CHAR, MemNode::unordered);
4050 break;
4051
4052 default:
4053 fatal_unexpected_iid(id);
4054 break;
4055 }
4056
4057 // Fall-through is the normal case of a query to a real class.
4058 phi->init_req(1, query_value);
4059 region->init_req(1, control());
4060
4061 C->set_has_split_ifs(true); // Has chance for split-if optimization
4062 set_result(region, phi);
4063 return true;
4064 }
4065
4066 //-------------------------inline_Class_cast-------------------
4067 bool LibraryCallKit::inline_Class_cast() {
4068 Node* mirror = argument(0); // Class
4069 Node* obj = argument(1);
4070 const TypeInstPtr* mirror_con = _gvn.type(mirror)->isa_instptr();
4071 if (mirror_con == nullptr) {
4072 return false; // dead path (mirror->is_top()).
4073 }
4074 if (obj == nullptr || obj->is_top()) {
4075 return false; // dead path
4076 }
4077 const TypeOopPtr* tp = _gvn.type(obj)->isa_oopptr();
4078
4079 // First, see if Class.cast() can be folded statically.
4080 // java_mirror_type() returns non-null for compile-time Class constants.
4081 ciType* tm = mirror_con->java_mirror_type();
4082 if (tm != nullptr && tm->is_klass() &&
4083 tp != nullptr) {
4084 if (!tp->is_loaded()) {
4085 // Don't use intrinsic when class is not loaded.
4086 return false;
4087 } else {
4088 int static_res = C->static_subtype_check(TypeKlassPtr::make(tm->as_klass(), Type::trust_interfaces), tp->as_klass_type());
4089 if (static_res == Compile::SSC_always_true) {
4090 // isInstance() is true - fold the code.
4091 set_result(obj);
4092 return true;
4093 } else if (static_res == Compile::SSC_always_false) {
4094 // Don't use intrinsic, have to throw ClassCastException.
4095 // If the reference is null, the non-intrinsic bytecode will
4096 // be optimized appropriately.
4097 return false;
4098 }
4099 }
4100 }
4101
4102 // Bailout intrinsic and do normal inlining if exception path is frequent.
4103 if (too_many_traps(Deoptimization::Reason_intrinsic)) {
4104 return false;
4105 }
4106
4107 // Generate dynamic checks.
4108 // Class.cast() is java implementation of _checkcast bytecode.
4109 // Do checkcast (Parse::do_checkcast()) optimizations here.
4110
4111 mirror = null_check(mirror);
4112 // If mirror is dead, only null-path is taken.
4113 if (stopped()) {
4114 return true;
4115 }
4116
4117 // Not-subtype or the mirror's klass ptr is null (in case it is a primitive).
4118 enum { _bad_type_path = 1, _prim_path = 2, PATH_LIMIT };
4119 RegionNode* region = new RegionNode(PATH_LIMIT);
4120 record_for_igvn(region);
4121
4122 // Now load the mirror's klass metaobject, and null-check it.
4123 // If kls is null, we have a primitive mirror and
4124 // nothing is an instance of a primitive type.
4125 Node* kls = load_klass_from_mirror(mirror, false, region, _prim_path);
4126
4127 Node* res = top();
4128 if (!stopped()) {
4129 Node* bad_type_ctrl = top();
4130 // Do checkcast optimizations.
4131 res = gen_checkcast(obj, kls, &bad_type_ctrl);
4132 region->init_req(_bad_type_path, bad_type_ctrl);
4133 }
4134 if (region->in(_prim_path) != top() ||
4135 region->in(_bad_type_path) != top()) {
4136 // Let Interpreter throw ClassCastException.
4137 PreserveJVMState pjvms(this);
4138 set_control(_gvn.transform(region));
4139 uncommon_trap(Deoptimization::Reason_intrinsic,
4140 Deoptimization::Action_maybe_recompile);
4141 }
4142 if (!stopped()) {
4143 set_result(res);
4144 }
4145 return true;
4146 }
4147
4148
4149 //--------------------------inline_native_subtype_check------------------------
4150 // This intrinsic takes the JNI calls out of the heart of
4151 // UnsafeFieldAccessorImpl.set, which improves Field.set, readObject, etc.
4152 bool LibraryCallKit::inline_native_subtype_check() {
4153 // Pull both arguments off the stack.
4154 Node* args[2]; // two java.lang.Class mirrors: superc, subc
4155 args[0] = argument(0);
4156 args[1] = argument(1);
4157 Node* klasses[2]; // corresponding Klasses: superk, subk
4158 klasses[0] = klasses[1] = top();
4159
4160 enum {
4161 // A full decision tree on {superc is prim, subc is prim}:
4162 _prim_0_path = 1, // {P,N} => false
4163 // {P,P} & superc!=subc => false
4164 _prim_same_path, // {P,P} & superc==subc => true
4165 _prim_1_path, // {N,P} => false
4166 _ref_subtype_path, // {N,N} & subtype check wins => true
4167 _both_ref_path, // {N,N} & subtype check loses => false
4168 PATH_LIMIT
4169 };
4170
4171 RegionNode* region = new RegionNode(PATH_LIMIT);
4172 Node* phi = new PhiNode(region, TypeInt::BOOL);
4173 record_for_igvn(region);
4174
4175 const TypePtr* adr_type = TypeRawPtr::BOTTOM; // memory type of loads
4176 const TypeKlassPtr* kls_type = TypeInstKlassPtr::OBJECT_OR_NULL;
4177 int class_klass_offset = java_lang_Class::klass_offset();
4178
4179 // First null-check both mirrors and load each mirror's klass metaobject.
4180 int which_arg;
4181 for (which_arg = 0; which_arg <= 1; which_arg++) {
4182 Node* arg = args[which_arg];
4183 arg = null_check(arg);
4184 if (stopped()) break;
4185 args[which_arg] = arg;
4186
4187 Node* p = basic_plus_adr(arg, class_klass_offset);
4188 Node* kls = LoadKlassNode::make(_gvn, immutable_memory(), p, adr_type, kls_type);
4189 klasses[which_arg] = _gvn.transform(kls);
4190 }
4191
4192 // Having loaded both klasses, test each for null.
4193 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check);
4194 for (which_arg = 0; which_arg <= 1; which_arg++) {
4195 Node* kls = klasses[which_arg];
4196 Node* null_ctl = top();
4197 kls = null_check_oop(kls, &null_ctl, never_see_null);
4198 int prim_path = (which_arg == 0 ? _prim_0_path : _prim_1_path);
4199 region->init_req(prim_path, null_ctl);
4200 if (stopped()) break;
4201 klasses[which_arg] = kls;
4202 }
4203
4204 if (!stopped()) {
4205 // now we have two reference types, in klasses[0..1]
4206 Node* subk = klasses[1]; // the argument to isAssignableFrom
4207 Node* superk = klasses[0]; // the receiver
4208 region->set_req(_both_ref_path, gen_subtype_check(subk, superk));
4209 // now we have a successful reference subtype check
4210 region->set_req(_ref_subtype_path, control());
4211 }
4212
4213 // If both operands are primitive (both klasses null), then
4214 // we must return true when they are identical primitives.
4215 // It is convenient to test this after the first null klass check.
4216 set_control(region->in(_prim_0_path)); // go back to first null check
4217 if (!stopped()) {
4218 // Since superc is primitive, make a guard for the superc==subc case.
4219 Node* cmp_eq = _gvn.transform(new CmpPNode(args[0], args[1]));
4220 Node* bol_eq = _gvn.transform(new BoolNode(cmp_eq, BoolTest::eq));
4221 generate_guard(bol_eq, region, PROB_FAIR);
4222 if (region->req() == PATH_LIMIT+1) {
4223 // A guard was added. If the added guard is taken, superc==subc.
4224 region->swap_edges(PATH_LIMIT, _prim_same_path);
4225 region->del_req(PATH_LIMIT);
4226 }
4227 region->set_req(_prim_0_path, control()); // Not equal after all.
4228 }
4229
4230 // these are the only paths that produce 'true':
4231 phi->set_req(_prim_same_path, intcon(1));
4232 phi->set_req(_ref_subtype_path, intcon(1));
4233
4234 // pull together the cases:
4235 assert(region->req() == PATH_LIMIT, "sane region");
4236 for (uint i = 1; i < region->req(); i++) {
4237 Node* ctl = region->in(i);
4238 if (ctl == nullptr || ctl == top()) {
4239 region->set_req(i, top());
4240 phi ->set_req(i, top());
4241 } else if (phi->in(i) == nullptr) {
4242 phi->set_req(i, intcon(0)); // all other paths produce 'false'
4243 }
4244 }
4245
4246 set_control(_gvn.transform(region));
4247 set_result(_gvn.transform(phi));
4248 return true;
4249 }
4250
4251 //---------------------generate_array_guard_common------------------------
4252 Node* LibraryCallKit::generate_array_guard_common(Node* kls, RegionNode* region,
4253 bool obj_array, bool not_array, Node** obj) {
4254
4255 if (stopped()) {
4256 return nullptr;
4257 }
4258
4259 // If obj_array/non_array==false/false:
4260 // Branch around if the given klass is in fact an array (either obj or prim).
4261 // If obj_array/non_array==false/true:
4262 // Branch around if the given klass is not an array klass of any kind.
4263 // If obj_array/non_array==true/true:
4264 // Branch around if the kls is not an oop array (kls is int[], String, etc.)
4265 // If obj_array/non_array==true/false:
4266 // Branch around if the kls is an oop array (Object[] or subtype)
4267 //
4268 // Like generate_guard, adds a new path onto the region.
4269 jint layout_con = 0;
4270 Node* layout_val = get_layout_helper(kls, layout_con);
4271 if (layout_val == nullptr) {
4272 bool query = (obj_array
4273 ? Klass::layout_helper_is_objArray(layout_con)
4274 : Klass::layout_helper_is_array(layout_con));
4275 if (query == not_array) {
4276 return nullptr; // never a branch
4277 } else { // always a branch
4278 Node* always_branch = control();
4279 if (region != nullptr)
4280 region->add_req(always_branch);
4281 set_control(top());
4282 return always_branch;
4283 }
4284 }
4285 // Now test the correct condition.
4286 jint nval = (obj_array
4287 ? (jint)(Klass::_lh_array_tag_type_value
4288 << Klass::_lh_array_tag_shift)
4289 : Klass::_lh_neutral_value);
4290 Node* cmp = _gvn.transform(new CmpINode(layout_val, intcon(nval)));
4291 BoolTest::mask btest = BoolTest::lt; // correct for testing is_[obj]array
4292 // invert the test if we are looking for a non-array
4293 if (not_array) btest = BoolTest(btest).negate();
4294 Node* bol = _gvn.transform(new BoolNode(cmp, btest));
4295 Node* ctrl = generate_fair_guard(bol, region);
4296 Node* is_array_ctrl = not_array ? control() : ctrl;
4297 if (obj != nullptr && is_array_ctrl != nullptr && is_array_ctrl != top()) {
4298 // Keep track of the fact that 'obj' is an array to prevent
4299 // array specific accesses from floating above the guard.
4300 Node* cast = _gvn.transform(new CastPPNode(is_array_ctrl, *obj, TypeAryPtr::BOTTOM));
4301 // Check for top because in rare cases, the type system can determine that
4302 // the object can't be an array but the layout helper check is not folded.
4303 if (!cast->is_top()) {
4304 *obj = cast;
4305 }
4306 }
4307 return ctrl;
4308 }
4309
4310
4311 //-----------------------inline_native_newArray--------------------------
4312 // private static native Object java.lang.reflect.newArray(Class<?> componentType, int length);
4313 // private native Object Unsafe.allocateUninitializedArray0(Class<?> cls, int size);
4314 bool LibraryCallKit::inline_unsafe_newArray(bool uninitialized) {
4315 Node* mirror;
4316 Node* count_val;
4317 if (uninitialized) {
4318 null_check_receiver();
4319 mirror = argument(1);
4320 count_val = argument(2);
4321 } else {
4322 mirror = argument(0);
4323 count_val = argument(1);
4324 }
4325
4326 mirror = null_check(mirror);
4327 // If mirror or obj is dead, only null-path is taken.
4328 if (stopped()) return true;
4329
4330 enum { _normal_path = 1, _slow_path = 2, PATH_LIMIT };
4331 RegionNode* result_reg = new RegionNode(PATH_LIMIT);
4332 PhiNode* result_val = new PhiNode(result_reg, TypeInstPtr::NOTNULL);
4333 PhiNode* result_io = new PhiNode(result_reg, Type::ABIO);
4334 PhiNode* result_mem = new PhiNode(result_reg, Type::MEMORY, TypePtr::BOTTOM);
4335
4336 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check);
4337 Node* klass_node = load_array_klass_from_mirror(mirror, never_see_null,
4338 result_reg, _slow_path);
4339 Node* normal_ctl = control();
4340 Node* no_array_ctl = result_reg->in(_slow_path);
4341
4342 // Generate code for the slow case. We make a call to newArray().
4343 set_control(no_array_ctl);
4344 if (!stopped()) {
4345 // Either the input type is void.class, or else the
4346 // array klass has not yet been cached. Either the
4347 // ensuing call will throw an exception, or else it
4348 // will cache the array klass for next time.
4349 PreserveJVMState pjvms(this);
4350 CallJavaNode* slow_call = nullptr;
4351 if (uninitialized) {
4352 // Generate optimized virtual call (holder class 'Unsafe' is final)
4353 slow_call = generate_method_call(vmIntrinsics::_allocateUninitializedArray, false, false, true);
4354 } else {
4355 slow_call = generate_method_call_static(vmIntrinsics::_newArray, true);
4356 }
4357 Node* slow_result = set_results_for_java_call(slow_call);
4358 // this->control() comes from set_results_for_java_call
4359 result_reg->set_req(_slow_path, control());
4360 result_val->set_req(_slow_path, slow_result);
4361 result_io ->set_req(_slow_path, i_o());
4362 result_mem->set_req(_slow_path, reset_memory());
4363 }
4364
4365 set_control(normal_ctl);
4366 if (!stopped()) {
4367 // Normal case: The array type has been cached in the java.lang.Class.
4368 // The following call works fine even if the array type is polymorphic.
4369 // It could be a dynamic mix of int[], boolean[], Object[], etc.
4370 Node* obj = new_array(klass_node, count_val, 0); // no arguments to push
4371 result_reg->init_req(_normal_path, control());
4372 result_val->init_req(_normal_path, obj);
4373 result_io ->init_req(_normal_path, i_o());
4374 result_mem->init_req(_normal_path, reset_memory());
4375
4376 if (uninitialized) {
4377 // Mark the allocation so that zeroing is skipped
4378 AllocateArrayNode* alloc = AllocateArrayNode::Ideal_array_allocation(obj);
4379 alloc->maybe_set_complete(&_gvn);
4380 }
4381 }
4382
4383 // Return the combined state.
4384 set_i_o( _gvn.transform(result_io) );
4385 set_all_memory( _gvn.transform(result_mem));
4386
4387 C->set_has_split_ifs(true); // Has chance for split-if optimization
4388 set_result(result_reg, result_val);
4389 return true;
4390 }
4391
4392 //----------------------inline_native_getLength--------------------------
4393 // public static native int java.lang.reflect.Array.getLength(Object array);
4394 bool LibraryCallKit::inline_native_getLength() {
4395 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false;
4396
4397 Node* array = null_check(argument(0));
4398 // If array is dead, only null-path is taken.
4399 if (stopped()) return true;
4400
4401 // Deoptimize if it is a non-array.
4402 Node* non_array = generate_non_array_guard(load_object_klass(array), nullptr, &array);
4403
4404 if (non_array != nullptr) {
4405 PreserveJVMState pjvms(this);
4406 set_control(non_array);
4407 uncommon_trap(Deoptimization::Reason_intrinsic,
4408 Deoptimization::Action_maybe_recompile);
4409 }
4410
4411 // If control is dead, only non-array-path is taken.
4412 if (stopped()) return true;
4413
4414 // The works fine even if the array type is polymorphic.
4415 // It could be a dynamic mix of int[], boolean[], Object[], etc.
4416 Node* result = load_array_length(array);
4417
4418 C->set_has_split_ifs(true); // Has chance for split-if optimization
4419 set_result(result);
4420 return true;
4421 }
4422
4423 //------------------------inline_array_copyOf----------------------------
4424 // public static <T,U> T[] java.util.Arrays.copyOf( U[] original, int newLength, Class<? extends T[]> newType);
4425 // public static <T,U> T[] java.util.Arrays.copyOfRange(U[] original, int from, int to, Class<? extends T[]> newType);
4426 bool LibraryCallKit::inline_array_copyOf(bool is_copyOfRange) {
4427 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false;
4428
4429 // Get the arguments.
4430 Node* original = argument(0);
4431 Node* start = is_copyOfRange? argument(1): intcon(0);
4432 Node* end = is_copyOfRange? argument(2): argument(1);
4433 Node* array_type_mirror = is_copyOfRange? argument(3): argument(2);
4434
4435 Node* newcopy = nullptr;
4436
4437 // Set the original stack and the reexecute bit for the interpreter to reexecute
4438 // the bytecode that invokes Arrays.copyOf if deoptimization happens.
4439 { PreserveReexecuteState preexecs(this);
4440 jvms()->set_should_reexecute(true);
4441
4442 array_type_mirror = null_check(array_type_mirror);
4443 original = null_check(original);
4444
4445 // Check if a null path was taken unconditionally.
4446 if (stopped()) return true;
4447
4448 Node* orig_length = load_array_length(original);
4449
4450 Node* klass_node = load_klass_from_mirror(array_type_mirror, false, nullptr, 0);
4451 klass_node = null_check(klass_node);
4452
4453 RegionNode* bailout = new RegionNode(1);
4454 record_for_igvn(bailout);
4455
4456 // Despite the generic type of Arrays.copyOf, the mirror might be int, int[], etc.
4457 // Bail out if that is so.
4458 Node* not_objArray = generate_non_objArray_guard(klass_node, bailout);
4459 if (not_objArray != nullptr) {
4460 // Improve the klass node's type from the new optimistic assumption:
4461 ciKlass* ak = ciArrayKlass::make(env()->Object_klass());
4462 const Type* akls = TypeKlassPtr::make(TypePtr::NotNull, ak, 0/*offset*/);
4463 Node* cast = new CastPPNode(control(), klass_node, akls);
4464 klass_node = _gvn.transform(cast);
4465 }
4466
4467 // Bail out if either start or end is negative.
4468 generate_negative_guard(start, bailout, &start);
4469 generate_negative_guard(end, bailout, &end);
4470
4471 Node* length = end;
4472 if (_gvn.type(start) != TypeInt::ZERO) {
4473 length = _gvn.transform(new SubINode(end, start));
4474 }
4475
4476 // Bail out if length is negative (i.e., if start > end).
4477 // Without this the new_array would throw
4478 // NegativeArraySizeException but IllegalArgumentException is what
4479 // should be thrown
4480 generate_negative_guard(length, bailout, &length);
4481
4482 // Bail out if start is larger than the original length
4483 Node* orig_tail = _gvn.transform(new SubINode(orig_length, start));
4484 generate_negative_guard(orig_tail, bailout, &orig_tail);
4485
4486 if (bailout->req() > 1) {
4487 PreserveJVMState pjvms(this);
4488 set_control(_gvn.transform(bailout));
4489 uncommon_trap(Deoptimization::Reason_intrinsic,
4490 Deoptimization::Action_maybe_recompile);
4491 }
4492
4493 if (!stopped()) {
4494 // How many elements will we copy from the original?
4495 // The answer is MinI(orig_tail, length).
4496 Node* moved = _gvn.transform(new MinINode(orig_tail, length));
4497
4498 // Generate a direct call to the right arraycopy function(s).
4499 // We know the copy is disjoint but we might not know if the
4500 // oop stores need checking.
4501 // Extreme case: Arrays.copyOf((Integer[])x, 10, String[].class).
4502 // This will fail a store-check if x contains any non-nulls.
4503
4504 // ArrayCopyNode:Ideal may transform the ArrayCopyNode to
4505 // loads/stores but it is legal only if we're sure the
4506 // Arrays.copyOf would succeed. So we need all input arguments
4507 // to the copyOf to be validated, including that the copy to the
4508 // new array won't trigger an ArrayStoreException. That subtype
4509 // check can be optimized if we know something on the type of
4510 // the input array from type speculation.
4511 if (_gvn.type(klass_node)->singleton()) {
4512 const TypeKlassPtr* subk = _gvn.type(load_object_klass(original))->is_klassptr();
4513 const TypeKlassPtr* superk = _gvn.type(klass_node)->is_klassptr();
4514
4515 int test = C->static_subtype_check(superk, subk);
4516 if (test != Compile::SSC_always_true && test != Compile::SSC_always_false) {
4517 const TypeOopPtr* t_original = _gvn.type(original)->is_oopptr();
4518 if (t_original->speculative_type() != nullptr) {
4519 original = maybe_cast_profiled_obj(original, t_original->speculative_type(), true);
4520 }
4521 }
4522 }
4523
4524 bool validated = false;
4525 // Reason_class_check rather than Reason_intrinsic because we
4526 // want to intrinsify even if this traps.
4527 if (!too_many_traps(Deoptimization::Reason_class_check)) {
4528 Node* not_subtype_ctrl = gen_subtype_check(original, klass_node);
4529
4530 if (not_subtype_ctrl != top()) {
4531 PreserveJVMState pjvms(this);
4532 set_control(not_subtype_ctrl);
4533 uncommon_trap(Deoptimization::Reason_class_check,
4534 Deoptimization::Action_make_not_entrant);
4535 assert(stopped(), "Should be stopped");
4536 }
4537 validated = true;
4538 }
4539
4540 if (!stopped()) {
4541 newcopy = new_array(klass_node, length, 0); // no arguments to push
4542
4543 ArrayCopyNode* ac = ArrayCopyNode::make(this, true, original, start, newcopy, intcon(0), moved, true, true,
4544 load_object_klass(original), klass_node);
4545 if (!is_copyOfRange) {
4546 ac->set_copyof(validated);
4547 } else {
4548 ac->set_copyofrange(validated);
4549 }
4550 Node* n = _gvn.transform(ac);
4551 if (n == ac) {
4552 ac->connect_outputs(this);
4553 } else {
4554 assert(validated, "shouldn't transform if all arguments not validated");
4555 set_all_memory(n);
4556 }
4557 }
4558 }
4559 } // original reexecute is set back here
4560
4561 C->set_has_split_ifs(true); // Has chance for split-if optimization
4562 if (!stopped()) {
4563 set_result(newcopy);
4564 }
4565 return true;
4566 }
4567
4568
4569 //----------------------generate_virtual_guard---------------------------
4570 // Helper for hashCode and clone. Peeks inside the vtable to avoid a call.
4571 Node* LibraryCallKit::generate_virtual_guard(Node* obj_klass,
4572 RegionNode* slow_region) {
4573 ciMethod* method = callee();
4574 int vtable_index = method->vtable_index();
4575 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index,
4576 "bad index %d", vtable_index);
4577 // Get the Method* out of the appropriate vtable entry.
4578 int entry_offset = in_bytes(Klass::vtable_start_offset()) +
4579 vtable_index*vtableEntry::size_in_bytes() +
4580 in_bytes(vtableEntry::method_offset());
4581 Node* entry_addr = basic_plus_adr(obj_klass, entry_offset);
4582 Node* target_call = make_load(nullptr, entry_addr, TypePtr::NOTNULL, T_ADDRESS, MemNode::unordered);
4583
4584 // Compare the target method with the expected method (e.g., Object.hashCode).
4585 const TypePtr* native_call_addr = TypeMetadataPtr::make(method);
4586
4587 Node* native_call = makecon(native_call_addr);
4588 Node* chk_native = _gvn.transform(new CmpPNode(target_call, native_call));
4589 Node* test_native = _gvn.transform(new BoolNode(chk_native, BoolTest::ne));
4590
4591 return generate_slow_guard(test_native, slow_region);
4592 }
4593
4594 //-----------------------generate_method_call----------------------------
4595 // Use generate_method_call to make a slow-call to the real
4596 // method if the fast path fails. An alternative would be to
4597 // use a stub like OptoRuntime::slow_arraycopy_Java.
4598 // This only works for expanding the current library call,
4599 // not another intrinsic. (E.g., don't use this for making an
4600 // arraycopy call inside of the copyOf intrinsic.)
4601 CallJavaNode*
4602 LibraryCallKit::generate_method_call(vmIntrinsicID method_id, bool is_virtual, bool is_static, bool res_not_null) {
4603 // When compiling the intrinsic method itself, do not use this technique.
4604 guarantee(callee() != C->method(), "cannot make slow-call to self");
4605
4606 ciMethod* method = callee();
4607 // ensure the JVMS we have will be correct for this call
4608 guarantee(method_id == method->intrinsic_id(), "must match");
4609
4610 const TypeFunc* tf = TypeFunc::make(method);
4611 if (res_not_null) {
4612 assert(tf->return_type() == T_OBJECT, "");
4613 const TypeTuple* range = tf->range();
4614 const Type** fields = TypeTuple::fields(range->cnt());
4615 fields[TypeFunc::Parms] = range->field_at(TypeFunc::Parms)->filter_speculative(TypePtr::NOTNULL);
4616 const TypeTuple* new_range = TypeTuple::make(range->cnt(), fields);
4617 tf = TypeFunc::make(tf->domain(), new_range);
4618 }
4619 CallJavaNode* slow_call;
4620 if (is_static) {
4621 assert(!is_virtual, "");
4622 slow_call = new CallStaticJavaNode(C, tf,
4623 SharedRuntime::get_resolve_static_call_stub(), method);
4624 } else if (is_virtual) {
4625 assert(!gvn().type(argument(0))->maybe_null(), "should not be null");
4626 int vtable_index = Method::invalid_vtable_index;
4627 if (UseInlineCaches) {
4628 // Suppress the vtable call
4629 } else {
4630 // hashCode and clone are not a miranda methods,
4631 // so the vtable index is fixed.
4632 // No need to use the linkResolver to get it.
4633 vtable_index = method->vtable_index();
4634 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index,
4635 "bad index %d", vtable_index);
4636 }
4637 slow_call = new CallDynamicJavaNode(tf,
4638 SharedRuntime::get_resolve_virtual_call_stub(),
4639 method, vtable_index);
4640 } else { // neither virtual nor static: opt_virtual
4641 assert(!gvn().type(argument(0))->maybe_null(), "should not be null");
4642 slow_call = new CallStaticJavaNode(C, tf,
4643 SharedRuntime::get_resolve_opt_virtual_call_stub(), method);
4644 slow_call->set_optimized_virtual(true);
4645 }
4646 if (CallGenerator::is_inlined_method_handle_intrinsic(this->method(), bci(), callee())) {
4647 // To be able to issue a direct call (optimized virtual or virtual)
4648 // and skip a call to MH.linkTo*/invokeBasic adapter, additional information
4649 // about the method being invoked should be attached to the call site to
4650 // make resolution logic work (see SharedRuntime::resolve_{virtual,opt_virtual}_call_C).
4651 slow_call->set_override_symbolic_info(true);
4652 }
4653 set_arguments_for_java_call(slow_call);
4654 set_edges_for_java_call(slow_call);
4655 return slow_call;
4656 }
4657
4658
4659 /**
4660 * Build special case code for calls to hashCode on an object. This call may
4661 * be virtual (invokevirtual) or bound (invokespecial). For each case we generate
4662 * slightly different code.
4663 */
4664 bool LibraryCallKit::inline_native_hashcode(bool is_virtual, bool is_static) {
4665 assert(is_static == callee()->is_static(), "correct intrinsic selection");
4666 assert(!(is_virtual && is_static), "either virtual, special, or static");
4667
4668 enum { _slow_path = 1, _fast_path, _null_path, PATH_LIMIT };
4669
4670 RegionNode* result_reg = new RegionNode(PATH_LIMIT);
4671 PhiNode* result_val = new PhiNode(result_reg, TypeInt::INT);
4672 PhiNode* result_io = new PhiNode(result_reg, Type::ABIO);
4673 PhiNode* result_mem = new PhiNode(result_reg, Type::MEMORY, TypePtr::BOTTOM);
4674 Node* obj = nullptr;
4675 if (!is_static) {
4676 // Check for hashing null object
4677 obj = null_check_receiver();
4678 if (stopped()) return true; // unconditionally null
4679 result_reg->init_req(_null_path, top());
4680 result_val->init_req(_null_path, top());
4681 } else {
4682 // Do a null check, and return zero if null.
4683 // System.identityHashCode(null) == 0
4684 obj = argument(0);
4685 Node* null_ctl = top();
4686 obj = null_check_oop(obj, &null_ctl);
4687 result_reg->init_req(_null_path, null_ctl);
4688 result_val->init_req(_null_path, _gvn.intcon(0));
4689 }
4690
4691 // Unconditionally null? Then return right away.
4692 if (stopped()) {
4693 set_control( result_reg->in(_null_path));
4694 if (!stopped())
4695 set_result(result_val->in(_null_path));
4696 return true;
4697 }
4698
4699 // We only go to the fast case code if we pass a number of guards. The
4700 // paths which do not pass are accumulated in the slow_region.
4701 RegionNode* slow_region = new RegionNode(1);
4702 record_for_igvn(slow_region);
4703
4704 // If this is a virtual call, we generate a funny guard. We pull out
4705 // the vtable entry corresponding to hashCode() from the target object.
4706 // If the target method which we are calling happens to be the native
4707 // Object hashCode() method, we pass the guard. We do not need this
4708 // guard for non-virtual calls -- the caller is known to be the native
4709 // Object hashCode().
4710 if (is_virtual) {
4711 // After null check, get the object's klass.
4712 Node* obj_klass = load_object_klass(obj);
4713 generate_virtual_guard(obj_klass, slow_region);
4714 }
4715
4716 // Get the header out of the object, use LoadMarkNode when available
4717 Node* header_addr = basic_plus_adr(obj, oopDesc::mark_offset_in_bytes());
4718 // The control of the load must be null. Otherwise, the load can move before
4719 // the null check after castPP removal.
4720 Node* no_ctrl = nullptr;
4721 Node* header = make_load(no_ctrl, header_addr, TypeX_X, TypeX_X->basic_type(), MemNode::unordered);
4722
4723 if (!UseObjectMonitorTable) {
4724 // Test the header to see if it is safe to read w.r.t. locking.
4725 Node *lock_mask = _gvn.MakeConX(markWord::lock_mask_in_place);
4726 Node *lmasked_header = _gvn.transform(new AndXNode(header, lock_mask));
4727 if (LockingMode == LM_LIGHTWEIGHT) {
4728 Node *monitor_val = _gvn.MakeConX(markWord::monitor_value);
4729 Node *chk_monitor = _gvn.transform(new CmpXNode(lmasked_header, monitor_val));
4730 Node *test_monitor = _gvn.transform(new BoolNode(chk_monitor, BoolTest::eq));
4731
4732 generate_slow_guard(test_monitor, slow_region);
4733 } else {
4734 Node *unlocked_val = _gvn.MakeConX(markWord::unlocked_value);
4735 Node *chk_unlocked = _gvn.transform(new CmpXNode(lmasked_header, unlocked_val));
4736 Node *test_not_unlocked = _gvn.transform(new BoolNode(chk_unlocked, BoolTest::ne));
4737
4738 generate_slow_guard(test_not_unlocked, slow_region);
4739 }
4740 }
4741
4742 // Get the hash value and check to see that it has been properly assigned.
4743 // We depend on hash_mask being at most 32 bits and avoid the use of
4744 // hash_mask_in_place because it could be larger than 32 bits in a 64-bit
4745 // vm: see markWord.hpp.
4746 Node *hash_mask = _gvn.intcon(markWord::hash_mask);
4747 Node *hash_shift = _gvn.intcon(markWord::hash_shift);
4748 Node *hshifted_header= _gvn.transform(new URShiftXNode(header, hash_shift));
4749 // This hack lets the hash bits live anywhere in the mark object now, as long
4750 // as the shift drops the relevant bits into the low 32 bits. Note that
4751 // Java spec says that HashCode is an int so there's no point in capturing
4752 // an 'X'-sized hashcode (32 in 32-bit build or 64 in 64-bit build).
4753 hshifted_header = ConvX2I(hshifted_header);
4754 Node *hash_val = _gvn.transform(new AndINode(hshifted_header, hash_mask));
4755
4756 Node *no_hash_val = _gvn.intcon(markWord::no_hash);
4757 Node *chk_assigned = _gvn.transform(new CmpINode( hash_val, no_hash_val));
4758 Node *test_assigned = _gvn.transform(new BoolNode( chk_assigned, BoolTest::eq));
4759
4760 generate_slow_guard(test_assigned, slow_region);
4761
4762 Node* init_mem = reset_memory();
4763 // fill in the rest of the null path:
4764 result_io ->init_req(_null_path, i_o());
4765 result_mem->init_req(_null_path, init_mem);
4766
4767 result_val->init_req(_fast_path, hash_val);
4768 result_reg->init_req(_fast_path, control());
4769 result_io ->init_req(_fast_path, i_o());
4770 result_mem->init_req(_fast_path, init_mem);
4771
4772 // Generate code for the slow case. We make a call to hashCode().
4773 set_control(_gvn.transform(slow_region));
4774 if (!stopped()) {
4775 // No need for PreserveJVMState, because we're using up the present state.
4776 set_all_memory(init_mem);
4777 vmIntrinsics::ID hashCode_id = is_static ? vmIntrinsics::_identityHashCode : vmIntrinsics::_hashCode;
4778 CallJavaNode* slow_call = generate_method_call(hashCode_id, is_virtual, is_static, false);
4779 Node* slow_result = set_results_for_java_call(slow_call);
4780 // this->control() comes from set_results_for_java_call
4781 result_reg->init_req(_slow_path, control());
4782 result_val->init_req(_slow_path, slow_result);
4783 result_io ->set_req(_slow_path, i_o());
4784 result_mem ->set_req(_slow_path, reset_memory());
4785 }
4786
4787 // Return the combined state.
4788 set_i_o( _gvn.transform(result_io) );
4789 set_all_memory( _gvn.transform(result_mem));
4790
4791 set_result(result_reg, result_val);
4792 return true;
4793 }
4794
4795 //---------------------------inline_native_getClass----------------------------
4796 // public final native Class<?> java.lang.Object.getClass();
4797 //
4798 // Build special case code for calls to getClass on an object.
4799 bool LibraryCallKit::inline_native_getClass() {
4800 Node* obj = null_check_receiver();
4801 if (stopped()) return true;
4802 set_result(load_mirror_from_klass(load_object_klass(obj)));
4803 return true;
4804 }
4805
4806 //-----------------inline_native_Reflection_getCallerClass---------------------
4807 // public static native Class<?> sun.reflect.Reflection.getCallerClass();
4808 //
4809 // In the presence of deep enough inlining, getCallerClass() becomes a no-op.
4810 //
4811 // NOTE: This code must perform the same logic as JVM_GetCallerClass
4812 // in that it must skip particular security frames and checks for
4813 // caller sensitive methods.
4814 bool LibraryCallKit::inline_native_Reflection_getCallerClass() {
4815 #ifndef PRODUCT
4816 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
4817 tty->print_cr("Attempting to inline sun.reflect.Reflection.getCallerClass");
4818 }
4819 #endif
4820
4821 if (!jvms()->has_method()) {
4822 #ifndef PRODUCT
4823 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
4824 tty->print_cr(" Bailing out because intrinsic was inlined at top level");
4825 }
4826 #endif
4827 return false;
4828 }
4829
4830 // Walk back up the JVM state to find the caller at the required
4831 // depth.
4832 JVMState* caller_jvms = jvms();
4833
4834 // Cf. JVM_GetCallerClass
4835 // NOTE: Start the loop at depth 1 because the current JVM state does
4836 // not include the Reflection.getCallerClass() frame.
4837 for (int n = 1; caller_jvms != nullptr; caller_jvms = caller_jvms->caller(), n++) {
4838 ciMethod* m = caller_jvms->method();
4839 switch (n) {
4840 case 0:
4841 fatal("current JVM state does not include the Reflection.getCallerClass frame");
4842 break;
4843 case 1:
4844 // Frame 0 and 1 must be caller sensitive (see JVM_GetCallerClass).
4845 if (!m->caller_sensitive()) {
4846 #ifndef PRODUCT
4847 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
4848 tty->print_cr(" Bailing out: CallerSensitive annotation expected at frame %d", n);
4849 }
4850 #endif
4851 return false; // bail-out; let JVM_GetCallerClass do the work
4852 }
4853 break;
4854 default:
4855 if (!m->is_ignored_by_security_stack_walk()) {
4856 // We have reached the desired frame; return the holder class.
4857 // Acquire method holder as java.lang.Class and push as constant.
4858 ciInstanceKlass* caller_klass = caller_jvms->method()->holder();
4859 ciInstance* caller_mirror = caller_klass->java_mirror();
4860 set_result(makecon(TypeInstPtr::make(caller_mirror)));
4861
4862 #ifndef PRODUCT
4863 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
4864 tty->print_cr(" Succeeded: caller = %d) %s.%s, JVMS depth = %d", n, caller_klass->name()->as_utf8(), caller_jvms->method()->name()->as_utf8(), jvms()->depth());
4865 tty->print_cr(" JVM state at this point:");
4866 for (int i = jvms()->depth(), n = 1; i >= 1; i--, n++) {
4867 ciMethod* m = jvms()->of_depth(i)->method();
4868 tty->print_cr(" %d) %s.%s", n, m->holder()->name()->as_utf8(), m->name()->as_utf8());
4869 }
4870 }
4871 #endif
4872 return true;
4873 }
4874 break;
4875 }
4876 }
4877
4878 #ifndef PRODUCT
4879 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
4880 tty->print_cr(" Bailing out because caller depth exceeded inlining depth = %d", jvms()->depth());
4881 tty->print_cr(" JVM state at this point:");
4882 for (int i = jvms()->depth(), n = 1; i >= 1; i--, n++) {
4883 ciMethod* m = jvms()->of_depth(i)->method();
4884 tty->print_cr(" %d) %s.%s", n, m->holder()->name()->as_utf8(), m->name()->as_utf8());
4885 }
4886 }
4887 #endif
4888
4889 return false; // bail-out; let JVM_GetCallerClass do the work
4890 }
4891
4892 bool LibraryCallKit::inline_fp_conversions(vmIntrinsics::ID id) {
4893 Node* arg = argument(0);
4894 Node* result = nullptr;
4895
4896 switch (id) {
4897 case vmIntrinsics::_floatToRawIntBits: result = new MoveF2INode(arg); break;
4898 case vmIntrinsics::_intBitsToFloat: result = new MoveI2FNode(arg); break;
4899 case vmIntrinsics::_doubleToRawLongBits: result = new MoveD2LNode(arg); break;
4900 case vmIntrinsics::_longBitsToDouble: result = new MoveL2DNode(arg); break;
4901 case vmIntrinsics::_floatToFloat16: result = new ConvF2HFNode(arg); break;
4902 case vmIntrinsics::_float16ToFloat: result = new ConvHF2FNode(arg); break;
4903
4904 case vmIntrinsics::_doubleToLongBits: {
4905 // two paths (plus control) merge in a wood
4906 RegionNode *r = new RegionNode(3);
4907 Node *phi = new PhiNode(r, TypeLong::LONG);
4908
4909 Node *cmpisnan = _gvn.transform(new CmpDNode(arg, arg));
4910 // Build the boolean node
4911 Node *bolisnan = _gvn.transform(new BoolNode(cmpisnan, BoolTest::ne));
4912
4913 // Branch either way.
4914 // NaN case is less traveled, which makes all the difference.
4915 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN);
4916 Node *opt_isnan = _gvn.transform(ifisnan);
4917 assert( opt_isnan->is_If(), "Expect an IfNode");
4918 IfNode *opt_ifisnan = (IfNode*)opt_isnan;
4919 Node *iftrue = _gvn.transform(new IfTrueNode(opt_ifisnan));
4920
4921 set_control(iftrue);
4922
4923 static const jlong nan_bits = CONST64(0x7ff8000000000000);
4924 Node *slow_result = longcon(nan_bits); // return NaN
4925 phi->init_req(1, _gvn.transform( slow_result ));
4926 r->init_req(1, iftrue);
4927
4928 // Else fall through
4929 Node *iffalse = _gvn.transform(new IfFalseNode(opt_ifisnan));
4930 set_control(iffalse);
4931
4932 phi->init_req(2, _gvn.transform(new MoveD2LNode(arg)));
4933 r->init_req(2, iffalse);
4934
4935 // Post merge
4936 set_control(_gvn.transform(r));
4937 record_for_igvn(r);
4938
4939 C->set_has_split_ifs(true); // Has chance for split-if optimization
4940 result = phi;
4941 assert(result->bottom_type()->isa_long(), "must be");
4942 break;
4943 }
4944
4945 case vmIntrinsics::_floatToIntBits: {
4946 // two paths (plus control) merge in a wood
4947 RegionNode *r = new RegionNode(3);
4948 Node *phi = new PhiNode(r, TypeInt::INT);
4949
4950 Node *cmpisnan = _gvn.transform(new CmpFNode(arg, arg));
4951 // Build the boolean node
4952 Node *bolisnan = _gvn.transform(new BoolNode(cmpisnan, BoolTest::ne));
4953
4954 // Branch either way.
4955 // NaN case is less traveled, which makes all the difference.
4956 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN);
4957 Node *opt_isnan = _gvn.transform(ifisnan);
4958 assert( opt_isnan->is_If(), "Expect an IfNode");
4959 IfNode *opt_ifisnan = (IfNode*)opt_isnan;
4960 Node *iftrue = _gvn.transform(new IfTrueNode(opt_ifisnan));
4961
4962 set_control(iftrue);
4963
4964 static const jint nan_bits = 0x7fc00000;
4965 Node *slow_result = makecon(TypeInt::make(nan_bits)); // return NaN
4966 phi->init_req(1, _gvn.transform( slow_result ));
4967 r->init_req(1, iftrue);
4968
4969 // Else fall through
4970 Node *iffalse = _gvn.transform(new IfFalseNode(opt_ifisnan));
4971 set_control(iffalse);
4972
4973 phi->init_req(2, _gvn.transform(new MoveF2INode(arg)));
4974 r->init_req(2, iffalse);
4975
4976 // Post merge
4977 set_control(_gvn.transform(r));
4978 record_for_igvn(r);
4979
4980 C->set_has_split_ifs(true); // Has chance for split-if optimization
4981 result = phi;
4982 assert(result->bottom_type()->isa_int(), "must be");
4983 break;
4984 }
4985
4986 default:
4987 fatal_unexpected_iid(id);
4988 break;
4989 }
4990 set_result(_gvn.transform(result));
4991 return true;
4992 }
4993
4994 bool LibraryCallKit::inline_fp_range_check(vmIntrinsics::ID id) {
4995 Node* arg = argument(0);
4996 Node* result = nullptr;
4997
4998 switch (id) {
4999 case vmIntrinsics::_floatIsInfinite:
5000 result = new IsInfiniteFNode(arg);
5001 break;
5002 case vmIntrinsics::_floatIsFinite:
5003 result = new IsFiniteFNode(arg);
5004 break;
5005 case vmIntrinsics::_doubleIsInfinite:
5006 result = new IsInfiniteDNode(arg);
5007 break;
5008 case vmIntrinsics::_doubleIsFinite:
5009 result = new IsFiniteDNode(arg);
5010 break;
5011 default:
5012 fatal_unexpected_iid(id);
5013 break;
5014 }
5015 set_result(_gvn.transform(result));
5016 return true;
5017 }
5018
5019 //----------------------inline_unsafe_copyMemory-------------------------
5020 // public native void Unsafe.copyMemory0(Object srcBase, long srcOffset, Object destBase, long destOffset, long bytes);
5021
5022 static bool has_wide_mem(PhaseGVN& gvn, Node* addr, Node* base) {
5023 const TypeAryPtr* addr_t = gvn.type(addr)->isa_aryptr();
5024 const Type* base_t = gvn.type(base);
5025
5026 bool in_native = (base_t == TypePtr::NULL_PTR);
5027 bool in_heap = !TypePtr::NULL_PTR->higher_equal(base_t);
5028 bool is_mixed = !in_heap && !in_native;
5029
5030 if (is_mixed) {
5031 return true; // mixed accesses can touch both on-heap and off-heap memory
5032 }
5033 if (in_heap) {
5034 bool is_prim_array = (addr_t != nullptr) && (addr_t->elem() != Type::BOTTOM);
5035 if (!is_prim_array) {
5036 // Though Unsafe.copyMemory() ensures at runtime for on-heap accesses that base is a primitive array,
5037 // there's not enough type information available to determine proper memory slice for it.
5038 return true;
5039 }
5040 }
5041 return false;
5042 }
5043
5044 bool LibraryCallKit::inline_unsafe_copyMemory() {
5045 if (callee()->is_static()) return false; // caller must have the capability!
5046 null_check_receiver(); // null-check receiver
5047 if (stopped()) return true;
5048
5049 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe".
5050
5051 Node* src_base = argument(1); // type: oop
5052 Node* src_off = ConvL2X(argument(2)); // type: long
5053 Node* dst_base = argument(4); // type: oop
5054 Node* dst_off = ConvL2X(argument(5)); // type: long
5055 Node* size = ConvL2X(argument(7)); // type: long
5056
5057 assert(Unsafe_field_offset_to_byte_offset(11) == 11,
5058 "fieldOffset must be byte-scaled");
5059
5060 Node* src_addr = make_unsafe_address(src_base, src_off);
5061 Node* dst_addr = make_unsafe_address(dst_base, dst_off);
5062
5063 Node* thread = _gvn.transform(new ThreadLocalNode());
5064 Node* doing_unsafe_access_addr = basic_plus_adr(top(), thread, in_bytes(JavaThread::doing_unsafe_access_offset()));
5065 BasicType doing_unsafe_access_bt = T_BYTE;
5066 assert((sizeof(bool) * CHAR_BIT) == 8, "not implemented");
5067
5068 // update volatile field
5069 store_to_memory(control(), doing_unsafe_access_addr, intcon(1), doing_unsafe_access_bt, MemNode::unordered);
5070
5071 int flags = RC_LEAF | RC_NO_FP;
5072
5073 const TypePtr* dst_type = TypePtr::BOTTOM;
5074
5075 // Adjust memory effects of the runtime call based on input values.
5076 if (!has_wide_mem(_gvn, src_addr, src_base) &&
5077 !has_wide_mem(_gvn, dst_addr, dst_base)) {
5078 dst_type = _gvn.type(dst_addr)->is_ptr(); // narrow out memory
5079
5080 const TypePtr* src_type = _gvn.type(src_addr)->is_ptr();
5081 if (C->get_alias_index(src_type) == C->get_alias_index(dst_type)) {
5082 flags |= RC_NARROW_MEM; // narrow in memory
5083 }
5084 }
5085
5086 // Call it. Note that the length argument is not scaled.
5087 make_runtime_call(flags,
5088 OptoRuntime::fast_arraycopy_Type(),
5089 StubRoutines::unsafe_arraycopy(),
5090 "unsafe_arraycopy",
5091 dst_type,
5092 src_addr, dst_addr, size XTOP);
5093
5094 store_to_memory(control(), doing_unsafe_access_addr, intcon(0), doing_unsafe_access_bt, MemNode::unordered);
5095
5096 return true;
5097 }
5098
5099 // unsafe_setmemory(void *base, ulong offset, size_t length, char fill_value);
5100 // Fill 'length' bytes starting from 'base[offset]' with 'fill_value'
5101 bool LibraryCallKit::inline_unsafe_setMemory() {
5102 if (callee()->is_static()) return false; // caller must have the capability!
5103 null_check_receiver(); // null-check receiver
5104 if (stopped()) return true;
5105
5106 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe".
5107
5108 Node* dst_base = argument(1); // type: oop
5109 Node* dst_off = ConvL2X(argument(2)); // type: long
5110 Node* size = ConvL2X(argument(4)); // type: long
5111 Node* byte = argument(6); // type: byte
5112
5113 assert(Unsafe_field_offset_to_byte_offset(11) == 11,
5114 "fieldOffset must be byte-scaled");
5115
5116 Node* dst_addr = make_unsafe_address(dst_base, dst_off);
5117
5118 Node* thread = _gvn.transform(new ThreadLocalNode());
5119 Node* doing_unsafe_access_addr = basic_plus_adr(top(), thread, in_bytes(JavaThread::doing_unsafe_access_offset()));
5120 BasicType doing_unsafe_access_bt = T_BYTE;
5121 assert((sizeof(bool) * CHAR_BIT) == 8, "not implemented");
5122
5123 // update volatile field
5124 store_to_memory(control(), doing_unsafe_access_addr, intcon(1), doing_unsafe_access_bt, MemNode::unordered);
5125
5126 int flags = RC_LEAF | RC_NO_FP;
5127
5128 const TypePtr* dst_type = TypePtr::BOTTOM;
5129
5130 // Adjust memory effects of the runtime call based on input values.
5131 if (!has_wide_mem(_gvn, dst_addr, dst_base)) {
5132 dst_type = _gvn.type(dst_addr)->is_ptr(); // narrow out memory
5133
5134 flags |= RC_NARROW_MEM; // narrow in memory
5135 }
5136
5137 // Call it. Note that the length argument is not scaled.
5138 make_runtime_call(flags,
5139 OptoRuntime::unsafe_setmemory_Type(),
5140 StubRoutines::unsafe_setmemory(),
5141 "unsafe_setmemory",
5142 dst_type,
5143 dst_addr, size XTOP, byte);
5144
5145 store_to_memory(control(), doing_unsafe_access_addr, intcon(0), doing_unsafe_access_bt, MemNode::unordered);
5146
5147 return true;
5148 }
5149
5150 #undef XTOP
5151
5152 //------------------------clone_coping-----------------------------------
5153 // Helper function for inline_native_clone.
5154 void LibraryCallKit::copy_to_clone(Node* obj, Node* alloc_obj, Node* obj_size, bool is_array) {
5155 assert(obj_size != nullptr, "");
5156 Node* raw_obj = alloc_obj->in(1);
5157 assert(alloc_obj->is_CheckCastPP() && raw_obj->is_Proj() && raw_obj->in(0)->is_Allocate(), "");
5158
5159 AllocateNode* alloc = nullptr;
5160 if (ReduceBulkZeroing &&
5161 // If we are implementing an array clone without knowing its source type
5162 // (can happen when compiling the array-guarded branch of a reflective
5163 // Object.clone() invocation), initialize the array within the allocation.
5164 // This is needed because some GCs (e.g. ZGC) might fall back in this case
5165 // to a runtime clone call that assumes fully initialized source arrays.
5166 (!is_array || obj->get_ptr_type()->isa_aryptr() != nullptr)) {
5167 // We will be completely responsible for initializing this object -
5168 // mark Initialize node as complete.
5169 alloc = AllocateNode::Ideal_allocation(alloc_obj);
5170 // The object was just allocated - there should be no any stores!
5171 guarantee(alloc != nullptr && alloc->maybe_set_complete(&_gvn), "");
5172 // Mark as complete_with_arraycopy so that on AllocateNode
5173 // expansion, we know this AllocateNode is initialized by an array
5174 // copy and a StoreStore barrier exists after the array copy.
5175 alloc->initialization()->set_complete_with_arraycopy();
5176 }
5177
5178 Node* size = _gvn.transform(obj_size);
5179 access_clone(obj, alloc_obj, size, is_array);
5180
5181 // Do not let reads from the cloned object float above the arraycopy.
5182 if (alloc != nullptr) {
5183 // Do not let stores that initialize this object be reordered with
5184 // a subsequent store that would make this object accessible by
5185 // other threads.
5186 // Record what AllocateNode this StoreStore protects so that
5187 // escape analysis can go from the MemBarStoreStoreNode to the
5188 // AllocateNode and eliminate the MemBarStoreStoreNode if possible
5189 // based on the escape status of the AllocateNode.
5190 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out_or_null(AllocateNode::RawAddress));
5191 } else {
5192 insert_mem_bar(Op_MemBarCPUOrder);
5193 }
5194 }
5195
5196 //------------------------inline_native_clone----------------------------
5197 // protected native Object java.lang.Object.clone();
5198 //
5199 // Here are the simple edge cases:
5200 // null receiver => normal trap
5201 // virtual and clone was overridden => slow path to out-of-line clone
5202 // not cloneable or finalizer => slow path to out-of-line Object.clone
5203 //
5204 // The general case has two steps, allocation and copying.
5205 // Allocation has two cases, and uses GraphKit::new_instance or new_array.
5206 //
5207 // Copying also has two cases, oop arrays and everything else.
5208 // Oop arrays use arrayof_oop_arraycopy (same as System.arraycopy).
5209 // Everything else uses the tight inline loop supplied by CopyArrayNode.
5210 //
5211 // These steps fold up nicely if and when the cloned object's klass
5212 // can be sharply typed as an object array, a type array, or an instance.
5213 //
5214 bool LibraryCallKit::inline_native_clone(bool is_virtual) {
5215 PhiNode* result_val;
5216
5217 // Set the reexecute bit for the interpreter to reexecute
5218 // the bytecode that invokes Object.clone if deoptimization happens.
5219 { PreserveReexecuteState preexecs(this);
5220 jvms()->set_should_reexecute(true);
5221
5222 Node* obj = null_check_receiver();
5223 if (stopped()) return true;
5224
5225 const TypeOopPtr* obj_type = _gvn.type(obj)->is_oopptr();
5226
5227 // If we are going to clone an instance, we need its exact type to
5228 // know the number and types of fields to convert the clone to
5229 // loads/stores. Maybe a speculative type can help us.
5230 if (!obj_type->klass_is_exact() &&
5231 obj_type->speculative_type() != nullptr &&
5232 obj_type->speculative_type()->is_instance_klass()) {
5233 ciInstanceKlass* spec_ik = obj_type->speculative_type()->as_instance_klass();
5234 if (spec_ik->nof_nonstatic_fields() <= ArrayCopyLoadStoreMaxElem &&
5235 !spec_ik->has_injected_fields()) {
5236 if (!obj_type->isa_instptr() ||
5237 obj_type->is_instptr()->instance_klass()->has_subklass()) {
5238 obj = maybe_cast_profiled_obj(obj, obj_type->speculative_type(), false);
5239 }
5240 }
5241 }
5242
5243 // Conservatively insert a memory barrier on all memory slices.
5244 // Do not let writes into the original float below the clone.
5245 insert_mem_bar(Op_MemBarCPUOrder);
5246
5247 // paths into result_reg:
5248 enum {
5249 _slow_path = 1, // out-of-line call to clone method (virtual or not)
5250 _objArray_path, // plain array allocation, plus arrayof_oop_arraycopy
5251 _array_path, // plain array allocation, plus arrayof_long_arraycopy
5252 _instance_path, // plain instance allocation, plus arrayof_long_arraycopy
5253 PATH_LIMIT
5254 };
5255 RegionNode* result_reg = new RegionNode(PATH_LIMIT);
5256 result_val = new PhiNode(result_reg, TypeInstPtr::NOTNULL);
5257 PhiNode* result_i_o = new PhiNode(result_reg, Type::ABIO);
5258 PhiNode* result_mem = new PhiNode(result_reg, Type::MEMORY, TypePtr::BOTTOM);
5259 record_for_igvn(result_reg);
5260
5261 Node* obj_klass = load_object_klass(obj);
5262 Node* array_obj = obj;
5263 Node* array_ctl = generate_array_guard(obj_klass, (RegionNode*)nullptr, &array_obj);
5264 if (array_ctl != nullptr) {
5265 // It's an array.
5266 PreserveJVMState pjvms(this);
5267 set_control(array_ctl);
5268 Node* obj_length = load_array_length(array_obj);
5269 Node* array_size = nullptr; // Size of the array without object alignment padding.
5270 Node* alloc_obj = new_array(obj_klass, obj_length, 0, &array_size, /*deoptimize_on_exception=*/true);
5271
5272 BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
5273 if (bs->array_copy_requires_gc_barriers(true, T_OBJECT, true, false, BarrierSetC2::Parsing)) {
5274 // If it is an oop array, it requires very special treatment,
5275 // because gc barriers are required when accessing the array.
5276 Node* is_obja = generate_objArray_guard(obj_klass, (RegionNode*)nullptr);
5277 if (is_obja != nullptr) {
5278 PreserveJVMState pjvms2(this);
5279 set_control(is_obja);
5280 // Generate a direct call to the right arraycopy function(s).
5281 // Clones are always tightly coupled.
5282 ArrayCopyNode* ac = ArrayCopyNode::make(this, true, array_obj, intcon(0), alloc_obj, intcon(0), obj_length, true, false);
5283 ac->set_clone_oop_array();
5284 Node* n = _gvn.transform(ac);
5285 assert(n == ac, "cannot disappear");
5286 ac->connect_outputs(this, /*deoptimize_on_exception=*/true);
5287
5288 result_reg->init_req(_objArray_path, control());
5289 result_val->init_req(_objArray_path, alloc_obj);
5290 result_i_o ->set_req(_objArray_path, i_o());
5291 result_mem ->set_req(_objArray_path, reset_memory());
5292 }
5293 }
5294 // Otherwise, there are no barriers to worry about.
5295 // (We can dispense with card marks if we know the allocation
5296 // comes out of eden (TLAB)... In fact, ReduceInitialCardMarks
5297 // causes the non-eden paths to take compensating steps to
5298 // simulate a fresh allocation, so that no further
5299 // card marks are required in compiled code to initialize
5300 // the object.)
5301
5302 if (!stopped()) {
5303 copy_to_clone(array_obj, alloc_obj, array_size, true);
5304
5305 // Present the results of the copy.
5306 result_reg->init_req(_array_path, control());
5307 result_val->init_req(_array_path, alloc_obj);
5308 result_i_o ->set_req(_array_path, i_o());
5309 result_mem ->set_req(_array_path, reset_memory());
5310 }
5311 }
5312
5313 // We only go to the instance fast case code if we pass a number of guards.
5314 // The paths which do not pass are accumulated in the slow_region.
5315 RegionNode* slow_region = new RegionNode(1);
5316 record_for_igvn(slow_region);
5317 if (!stopped()) {
5318 // It's an instance (we did array above). Make the slow-path tests.
5319 // If this is a virtual call, we generate a funny guard. We grab
5320 // the vtable entry corresponding to clone() from the target object.
5321 // If the target method which we are calling happens to be the
5322 // Object clone() method, we pass the guard. We do not need this
5323 // guard for non-virtual calls; the caller is known to be the native
5324 // Object clone().
5325 if (is_virtual) {
5326 generate_virtual_guard(obj_klass, slow_region);
5327 }
5328
5329 // The object must be easily cloneable and must not have a finalizer.
5330 // Both of these conditions may be checked in a single test.
5331 // We could optimize the test further, but we don't care.
5332 generate_misc_flags_guard(obj_klass,
5333 // Test both conditions:
5334 KlassFlags::_misc_is_cloneable_fast | KlassFlags::_misc_has_finalizer,
5335 // Must be cloneable but not finalizer:
5336 KlassFlags::_misc_is_cloneable_fast,
5337 slow_region);
5338 }
5339
5340 if (!stopped()) {
5341 // It's an instance, and it passed the slow-path tests.
5342 PreserveJVMState pjvms(this);
5343 Node* obj_size = nullptr; // Total object size, including object alignment padding.
5344 // Need to deoptimize on exception from allocation since Object.clone intrinsic
5345 // is reexecuted if deoptimization occurs and there could be problems when merging
5346 // exception state between multiple Object.clone versions (reexecute=true vs reexecute=false).
5347 Node* alloc_obj = new_instance(obj_klass, nullptr, &obj_size, /*deoptimize_on_exception=*/true);
5348
5349 copy_to_clone(obj, alloc_obj, obj_size, false);
5350
5351 // Present the results of the slow call.
5352 result_reg->init_req(_instance_path, control());
5353 result_val->init_req(_instance_path, alloc_obj);
5354 result_i_o ->set_req(_instance_path, i_o());
5355 result_mem ->set_req(_instance_path, reset_memory());
5356 }
5357
5358 // Generate code for the slow case. We make a call to clone().
5359 set_control(_gvn.transform(slow_region));
5360 if (!stopped()) {
5361 PreserveJVMState pjvms(this);
5362 CallJavaNode* slow_call = generate_method_call(vmIntrinsics::_clone, is_virtual, false, true);
5363 // We need to deoptimize on exception (see comment above)
5364 Node* slow_result = set_results_for_java_call(slow_call, false, /* deoptimize */ true);
5365 // this->control() comes from set_results_for_java_call
5366 result_reg->init_req(_slow_path, control());
5367 result_val->init_req(_slow_path, slow_result);
5368 result_i_o ->set_req(_slow_path, i_o());
5369 result_mem ->set_req(_slow_path, reset_memory());
5370 }
5371
5372 // Return the combined state.
5373 set_control( _gvn.transform(result_reg));
5374 set_i_o( _gvn.transform(result_i_o));
5375 set_all_memory( _gvn.transform(result_mem));
5376 } // original reexecute is set back here
5377
5378 set_result(_gvn.transform(result_val));
5379 return true;
5380 }
5381
5382 // If we have a tightly coupled allocation, the arraycopy may take care
5383 // of the array initialization. If one of the guards we insert between
5384 // the allocation and the arraycopy causes a deoptimization, an
5385 // uninitialized array will escape the compiled method. To prevent that
5386 // we set the JVM state for uncommon traps between the allocation and
5387 // the arraycopy to the state before the allocation so, in case of
5388 // deoptimization, we'll reexecute the allocation and the
5389 // initialization.
5390 JVMState* LibraryCallKit::arraycopy_restore_alloc_state(AllocateArrayNode* alloc, int& saved_reexecute_sp) {
5391 if (alloc != nullptr) {
5392 ciMethod* trap_method = alloc->jvms()->method();
5393 int trap_bci = alloc->jvms()->bci();
5394
5395 if (!C->too_many_traps(trap_method, trap_bci, Deoptimization::Reason_intrinsic) &&
5396 !C->too_many_traps(trap_method, trap_bci, Deoptimization::Reason_null_check)) {
5397 // Make sure there's no store between the allocation and the
5398 // arraycopy otherwise visible side effects could be rexecuted
5399 // in case of deoptimization and cause incorrect execution.
5400 bool no_interfering_store = true;
5401 Node* mem = alloc->in(TypeFunc::Memory);
5402 if (mem->is_MergeMem()) {
5403 for (MergeMemStream mms(merged_memory(), mem->as_MergeMem()); mms.next_non_empty2(); ) {
5404 Node* n = mms.memory();
5405 if (n != mms.memory2() && !(n->is_Proj() && n->in(0) == alloc->initialization())) {
5406 assert(n->is_Store(), "what else?");
5407 no_interfering_store = false;
5408 break;
5409 }
5410 }
5411 } else {
5412 for (MergeMemStream mms(merged_memory()); mms.next_non_empty(); ) {
5413 Node* n = mms.memory();
5414 if (n != mem && !(n->is_Proj() && n->in(0) == alloc->initialization())) {
5415 assert(n->is_Store(), "what else?");
5416 no_interfering_store = false;
5417 break;
5418 }
5419 }
5420 }
5421
5422 if (no_interfering_store) {
5423 SafePointNode* sfpt = create_safepoint_with_state_before_array_allocation(alloc);
5424
5425 JVMState* saved_jvms = jvms();
5426 saved_reexecute_sp = _reexecute_sp;
5427
5428 set_jvms(sfpt->jvms());
5429 _reexecute_sp = jvms()->sp();
5430
5431 return saved_jvms;
5432 }
5433 }
5434 }
5435 return nullptr;
5436 }
5437
5438 // Clone the JVMState of the array allocation and create a new safepoint with it. Re-push the array length to the stack
5439 // such that uncommon traps can be emitted to re-execute the array allocation in the interpreter.
5440 SafePointNode* LibraryCallKit::create_safepoint_with_state_before_array_allocation(const AllocateArrayNode* alloc) const {
5441 JVMState* old_jvms = alloc->jvms()->clone_shallow(C);
5442 uint size = alloc->req();
5443 SafePointNode* sfpt = new SafePointNode(size, old_jvms);
5444 old_jvms->set_map(sfpt);
5445 for (uint i = 0; i < size; i++) {
5446 sfpt->init_req(i, alloc->in(i));
5447 }
5448 // re-push array length for deoptimization
5449 sfpt->ins_req(old_jvms->stkoff() + old_jvms->sp(), alloc->in(AllocateNode::ALength));
5450 old_jvms->set_sp(old_jvms->sp()+1);
5451 old_jvms->set_monoff(old_jvms->monoff()+1);
5452 old_jvms->set_scloff(old_jvms->scloff()+1);
5453 old_jvms->set_endoff(old_jvms->endoff()+1);
5454 old_jvms->set_should_reexecute(true);
5455
5456 sfpt->set_i_o(map()->i_o());
5457 sfpt->set_memory(map()->memory());
5458 sfpt->set_control(map()->control());
5459 return sfpt;
5460 }
5461
5462 // In case of a deoptimization, we restart execution at the
5463 // allocation, allocating a new array. We would leave an uninitialized
5464 // array in the heap that GCs wouldn't expect. Move the allocation
5465 // after the traps so we don't allocate the array if we
5466 // deoptimize. This is possible because tightly_coupled_allocation()
5467 // guarantees there's no observer of the allocated array at this point
5468 // and the control flow is simple enough.
5469 void LibraryCallKit::arraycopy_move_allocation_here(AllocateArrayNode* alloc, Node* dest, JVMState* saved_jvms_before_guards,
5470 int saved_reexecute_sp, uint new_idx) {
5471 if (saved_jvms_before_guards != nullptr && !stopped()) {
5472 replace_unrelated_uncommon_traps_with_alloc_state(alloc, saved_jvms_before_guards);
5473
5474 assert(alloc != nullptr, "only with a tightly coupled allocation");
5475 // restore JVM state to the state at the arraycopy
5476 saved_jvms_before_guards->map()->set_control(map()->control());
5477 assert(saved_jvms_before_guards->map()->memory() == map()->memory(), "memory state changed?");
5478 assert(saved_jvms_before_guards->map()->i_o() == map()->i_o(), "IO state changed?");
5479 // If we've improved the types of some nodes (null check) while
5480 // emitting the guards, propagate them to the current state
5481 map()->replaced_nodes().apply(saved_jvms_before_guards->map(), new_idx);
5482 set_jvms(saved_jvms_before_guards);
5483 _reexecute_sp = saved_reexecute_sp;
5484
5485 // Remove the allocation from above the guards
5486 CallProjections callprojs;
5487 alloc->extract_projections(&callprojs, true);
5488 InitializeNode* init = alloc->initialization();
5489 Node* alloc_mem = alloc->in(TypeFunc::Memory);
5490 C->gvn_replace_by(callprojs.fallthrough_ioproj, alloc->in(TypeFunc::I_O));
5491 C->gvn_replace_by(init->proj_out(TypeFunc::Memory), alloc_mem);
5492
5493 // The CastIINode created in GraphKit::new_array (in AllocateArrayNode::make_ideal_length) must stay below
5494 // the allocation (i.e. is only valid if the allocation succeeds):
5495 // 1) replace CastIINode with AllocateArrayNode's length here
5496 // 2) Create CastIINode again once allocation has moved (see below) at the end of this method
5497 //
5498 // Multiple identical CastIINodes might exist here. Each GraphKit::load_array_length() call will generate
5499 // new separate CastIINode (arraycopy guard checks or any array length use between array allocation and ararycopy)
5500 Node* init_control = init->proj_out(TypeFunc::Control);
5501 Node* alloc_length = alloc->Ideal_length();
5502 #ifdef ASSERT
5503 Node* prev_cast = nullptr;
5504 #endif
5505 for (uint i = 0; i < init_control->outcnt(); i++) {
5506 Node* init_out = init_control->raw_out(i);
5507 if (init_out->is_CastII() && init_out->in(TypeFunc::Control) == init_control && init_out->in(1) == alloc_length) {
5508 #ifdef ASSERT
5509 if (prev_cast == nullptr) {
5510 prev_cast = init_out;
5511 } else {
5512 if (prev_cast->cmp(*init_out) == false) {
5513 prev_cast->dump();
5514 init_out->dump();
5515 assert(false, "not equal CastIINode");
5516 }
5517 }
5518 #endif
5519 C->gvn_replace_by(init_out, alloc_length);
5520 }
5521 }
5522 C->gvn_replace_by(init->proj_out(TypeFunc::Control), alloc->in(0));
5523
5524 // move the allocation here (after the guards)
5525 _gvn.hash_delete(alloc);
5526 alloc->set_req(TypeFunc::Control, control());
5527 alloc->set_req(TypeFunc::I_O, i_o());
5528 Node *mem = reset_memory();
5529 set_all_memory(mem);
5530 alloc->set_req(TypeFunc::Memory, mem);
5531 set_control(init->proj_out_or_null(TypeFunc::Control));
5532 set_i_o(callprojs.fallthrough_ioproj);
5533
5534 // Update memory as done in GraphKit::set_output_for_allocation()
5535 const TypeInt* length_type = _gvn.find_int_type(alloc->in(AllocateNode::ALength));
5536 const TypeOopPtr* ary_type = _gvn.type(alloc->in(AllocateNode::KlassNode))->is_klassptr()->as_instance_type();
5537 if (ary_type->isa_aryptr() && length_type != nullptr) {
5538 ary_type = ary_type->is_aryptr()->cast_to_size(length_type);
5539 }
5540 const TypePtr* telemref = ary_type->add_offset(Type::OffsetBot);
5541 int elemidx = C->get_alias_index(telemref);
5542 set_memory(init->proj_out_or_null(TypeFunc::Memory), Compile::AliasIdxRaw);
5543 set_memory(init->proj_out_or_null(TypeFunc::Memory), elemidx);
5544
5545 Node* allocx = _gvn.transform(alloc);
5546 assert(allocx == alloc, "where has the allocation gone?");
5547 assert(dest->is_CheckCastPP(), "not an allocation result?");
5548
5549 _gvn.hash_delete(dest);
5550 dest->set_req(0, control());
5551 Node* destx = _gvn.transform(dest);
5552 assert(destx == dest, "where has the allocation result gone?");
5553
5554 array_ideal_length(alloc, ary_type, true);
5555 }
5556 }
5557
5558 // Unrelated UCTs between the array allocation and the array copy, which are considered safe by tightly_coupled_allocation(),
5559 // need to be replaced by an UCT with a state before the array allocation (including the array length). This is necessary
5560 // because we could hit one of these UCTs (which are executed before the emitted array copy guards and the actual array
5561 // allocation which is moved down in arraycopy_move_allocation_here()). When later resuming execution in the interpreter,
5562 // we would have wrongly skipped the array allocation. To prevent this, we resume execution at the array allocation in
5563 // the interpreter similar to what we are doing for the newly emitted guards for the array copy.
5564 void LibraryCallKit::replace_unrelated_uncommon_traps_with_alloc_state(AllocateArrayNode* alloc,
5565 JVMState* saved_jvms_before_guards) {
5566 if (saved_jvms_before_guards->map()->control()->is_IfProj()) {
5567 // There is at least one unrelated uncommon trap which needs to be replaced.
5568 SafePointNode* sfpt = create_safepoint_with_state_before_array_allocation(alloc);
5569
5570 JVMState* saved_jvms = jvms();
5571 const int saved_reexecute_sp = _reexecute_sp;
5572 set_jvms(sfpt->jvms());
5573 _reexecute_sp = jvms()->sp();
5574
5575 replace_unrelated_uncommon_traps_with_alloc_state(saved_jvms_before_guards);
5576
5577 // Restore state
5578 set_jvms(saved_jvms);
5579 _reexecute_sp = saved_reexecute_sp;
5580 }
5581 }
5582
5583 // Replace the unrelated uncommon traps with new uncommon trap nodes by reusing the action and reason. The new uncommon
5584 // traps will have the state of the array allocation. Let the old uncommon trap nodes die.
5585 void LibraryCallKit::replace_unrelated_uncommon_traps_with_alloc_state(JVMState* saved_jvms_before_guards) {
5586 Node* if_proj = saved_jvms_before_guards->map()->control(); // Start the search right before the newly emitted guards
5587 while (if_proj->is_IfProj()) {
5588 CallStaticJavaNode* uncommon_trap = get_uncommon_trap_from_success_proj(if_proj);
5589 if (uncommon_trap != nullptr) {
5590 create_new_uncommon_trap(uncommon_trap);
5591 }
5592 assert(if_proj->in(0)->is_If(), "must be If");
5593 if_proj = if_proj->in(0)->in(0);
5594 }
5595 assert(if_proj->is_Proj() && if_proj->in(0)->is_Initialize(),
5596 "must have reached control projection of init node");
5597 }
5598
5599 void LibraryCallKit::create_new_uncommon_trap(CallStaticJavaNode* uncommon_trap_call) {
5600 const int trap_request = uncommon_trap_call->uncommon_trap_request();
5601 assert(trap_request != 0, "no valid UCT trap request");
5602 PreserveJVMState pjvms(this);
5603 set_control(uncommon_trap_call->in(0));
5604 uncommon_trap(Deoptimization::trap_request_reason(trap_request),
5605 Deoptimization::trap_request_action(trap_request));
5606 assert(stopped(), "Should be stopped");
5607 _gvn.hash_delete(uncommon_trap_call);
5608 uncommon_trap_call->set_req(0, top()); // not used anymore, kill it
5609 }
5610
5611 // Common checks for array sorting intrinsics arguments.
5612 // Returns `true` if checks passed.
5613 bool LibraryCallKit::check_array_sort_arguments(Node* elementType, Node* obj, BasicType& bt) {
5614 // check address of the class
5615 if (elementType == nullptr || elementType->is_top()) {
5616 return false; // dead path
5617 }
5618 const TypeInstPtr* elem_klass = gvn().type(elementType)->isa_instptr();
5619 if (elem_klass == nullptr) {
5620 return false; // dead path
5621 }
5622 // java_mirror_type() returns non-null for compile-time Class constants only
5623 ciType* elem_type = elem_klass->java_mirror_type();
5624 if (elem_type == nullptr) {
5625 return false;
5626 }
5627 bt = elem_type->basic_type();
5628 // Disable the intrinsic if the CPU does not support SIMD sort
5629 if (!Matcher::supports_simd_sort(bt)) {
5630 return false;
5631 }
5632 // check address of the array
5633 if (obj == nullptr || obj->is_top()) {
5634 return false; // dead path
5635 }
5636 const TypeAryPtr* obj_t = _gvn.type(obj)->isa_aryptr();
5637 if (obj_t == nullptr || obj_t->elem() == Type::BOTTOM) {
5638 return false; // failed input validation
5639 }
5640 return true;
5641 }
5642
5643 //------------------------------inline_array_partition-----------------------
5644 bool LibraryCallKit::inline_array_partition() {
5645 address stubAddr = StubRoutines::select_array_partition_function();
5646 if (stubAddr == nullptr) {
5647 return false; // Intrinsic's stub is not implemented on this platform
5648 }
5649 assert(callee()->signature()->size() == 9, "arrayPartition has 8 parameters (one long)");
5650
5651 // no receiver because it is a static method
5652 Node* elementType = argument(0);
5653 Node* obj = argument(1);
5654 Node* offset = argument(2); // long
5655 Node* fromIndex = argument(4);
5656 Node* toIndex = argument(5);
5657 Node* indexPivot1 = argument(6);
5658 Node* indexPivot2 = argument(7);
5659 // PartitionOperation: argument(8) is ignored
5660
5661 Node* pivotIndices = nullptr;
5662 BasicType bt = T_ILLEGAL;
5663
5664 if (!check_array_sort_arguments(elementType, obj, bt)) {
5665 return false;
5666 }
5667 null_check(obj);
5668 // If obj is dead, only null-path is taken.
5669 if (stopped()) {
5670 return true;
5671 }
5672 // Set the original stack and the reexecute bit for the interpreter to reexecute
5673 // the bytecode that invokes DualPivotQuicksort.partition() if deoptimization happens.
5674 { PreserveReexecuteState preexecs(this);
5675 jvms()->set_should_reexecute(true);
5676
5677 Node* obj_adr = make_unsafe_address(obj, offset);
5678
5679 // create the pivotIndices array of type int and size = 2
5680 Node* size = intcon(2);
5681 Node* klass_node = makecon(TypeKlassPtr::make(ciTypeArrayKlass::make(T_INT)));
5682 pivotIndices = new_array(klass_node, size, 0); // no arguments to push
5683 AllocateArrayNode* alloc = tightly_coupled_allocation(pivotIndices);
5684 guarantee(alloc != nullptr, "created above");
5685 Node* pivotIndices_adr = basic_plus_adr(pivotIndices, arrayOopDesc::base_offset_in_bytes(T_INT));
5686
5687 // pass the basic type enum to the stub
5688 Node* elemType = intcon(bt);
5689
5690 // Call the stub
5691 const char *stubName = "array_partition_stub";
5692 make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::array_partition_Type(),
5693 stubAddr, stubName, TypePtr::BOTTOM,
5694 obj_adr, elemType, fromIndex, toIndex, pivotIndices_adr,
5695 indexPivot1, indexPivot2);
5696
5697 } // original reexecute is set back here
5698
5699 if (!stopped()) {
5700 set_result(pivotIndices);
5701 }
5702
5703 return true;
5704 }
5705
5706
5707 //------------------------------inline_array_sort-----------------------
5708 bool LibraryCallKit::inline_array_sort() {
5709 address stubAddr = StubRoutines::select_arraysort_function();
5710 if (stubAddr == nullptr) {
5711 return false; // Intrinsic's stub is not implemented on this platform
5712 }
5713 assert(callee()->signature()->size() == 7, "arraySort has 6 parameters (one long)");
5714
5715 // no receiver because it is a static method
5716 Node* elementType = argument(0);
5717 Node* obj = argument(1);
5718 Node* offset = argument(2); // long
5719 Node* fromIndex = argument(4);
5720 Node* toIndex = argument(5);
5721 // SortOperation: argument(6) is ignored
5722
5723 BasicType bt = T_ILLEGAL;
5724
5725 if (!check_array_sort_arguments(elementType, obj, bt)) {
5726 return false;
5727 }
5728 null_check(obj);
5729 // If obj is dead, only null-path is taken.
5730 if (stopped()) {
5731 return true;
5732 }
5733 Node* obj_adr = make_unsafe_address(obj, offset);
5734
5735 // pass the basic type enum to the stub
5736 Node* elemType = intcon(bt);
5737
5738 // Call the stub.
5739 const char *stubName = "arraysort_stub";
5740 make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::array_sort_Type(),
5741 stubAddr, stubName, TypePtr::BOTTOM,
5742 obj_adr, elemType, fromIndex, toIndex);
5743
5744 return true;
5745 }
5746
5747
5748 //------------------------------inline_arraycopy-----------------------
5749 // public static native void java.lang.System.arraycopy(Object src, int srcPos,
5750 // Object dest, int destPos,
5751 // int length);
5752 bool LibraryCallKit::inline_arraycopy() {
5753 // Get the arguments.
5754 Node* src = argument(0); // type: oop
5755 Node* src_offset = argument(1); // type: int
5756 Node* dest = argument(2); // type: oop
5757 Node* dest_offset = argument(3); // type: int
5758 Node* length = argument(4); // type: int
5759
5760 uint new_idx = C->unique();
5761
5762 // Check for allocation before we add nodes that would confuse
5763 // tightly_coupled_allocation()
5764 AllocateArrayNode* alloc = tightly_coupled_allocation(dest);
5765
5766 int saved_reexecute_sp = -1;
5767 JVMState* saved_jvms_before_guards = arraycopy_restore_alloc_state(alloc, saved_reexecute_sp);
5768 // See arraycopy_restore_alloc_state() comment
5769 // if alloc == null we don't have to worry about a tightly coupled allocation so we can emit all needed guards
5770 // if saved_jvms_before_guards is not null (then alloc is not null) then we can handle guards and a tightly coupled allocation
5771 // if saved_jvms_before_guards is null and alloc is not null, we can't emit any guards
5772 bool can_emit_guards = (alloc == nullptr || saved_jvms_before_guards != nullptr);
5773
5774 // The following tests must be performed
5775 // (1) src and dest are arrays.
5776 // (2) src and dest arrays must have elements of the same BasicType
5777 // (3) src and dest must not be null.
5778 // (4) src_offset must not be negative.
5779 // (5) dest_offset must not be negative.
5780 // (6) length must not be negative.
5781 // (7) src_offset + length must not exceed length of src.
5782 // (8) dest_offset + length must not exceed length of dest.
5783 // (9) each element of an oop array must be assignable
5784
5785 // (3) src and dest must not be null.
5786 // always do this here because we need the JVM state for uncommon traps
5787 Node* null_ctl = top();
5788 src = saved_jvms_before_guards != nullptr ? null_check_oop(src, &null_ctl, true, true) : null_check(src, T_ARRAY);
5789 assert(null_ctl->is_top(), "no null control here");
5790 dest = null_check(dest, T_ARRAY);
5791
5792 if (!can_emit_guards) {
5793 // if saved_jvms_before_guards is null and alloc is not null, we don't emit any
5794 // guards but the arraycopy node could still take advantage of a
5795 // tightly allocated allocation. tightly_coupled_allocation() is
5796 // called again to make sure it takes the null check above into
5797 // account: the null check is mandatory and if it caused an
5798 // uncommon trap to be emitted then the allocation can't be
5799 // considered tightly coupled in this context.
5800 alloc = tightly_coupled_allocation(dest);
5801 }
5802
5803 bool validated = false;
5804
5805 const Type* src_type = _gvn.type(src);
5806 const Type* dest_type = _gvn.type(dest);
5807 const TypeAryPtr* top_src = src_type->isa_aryptr();
5808 const TypeAryPtr* top_dest = dest_type->isa_aryptr();
5809
5810 // Do we have the type of src?
5811 bool has_src = (top_src != nullptr && top_src->elem() != Type::BOTTOM);
5812 // Do we have the type of dest?
5813 bool has_dest = (top_dest != nullptr && top_dest->elem() != Type::BOTTOM);
5814 // Is the type for src from speculation?
5815 bool src_spec = false;
5816 // Is the type for dest from speculation?
5817 bool dest_spec = false;
5818
5819 if ((!has_src || !has_dest) && can_emit_guards) {
5820 // We don't have sufficient type information, let's see if
5821 // speculative types can help. We need to have types for both src
5822 // and dest so that it pays off.
5823
5824 // Do we already have or could we have type information for src
5825 bool could_have_src = has_src;
5826 // Do we already have or could we have type information for dest
5827 bool could_have_dest = has_dest;
5828
5829 ciKlass* src_k = nullptr;
5830 if (!has_src) {
5831 src_k = src_type->speculative_type_not_null();
5832 if (src_k != nullptr && src_k->is_array_klass()) {
5833 could_have_src = true;
5834 }
5835 }
5836
5837 ciKlass* dest_k = nullptr;
5838 if (!has_dest) {
5839 dest_k = dest_type->speculative_type_not_null();
5840 if (dest_k != nullptr && dest_k->is_array_klass()) {
5841 could_have_dest = true;
5842 }
5843 }
5844
5845 if (could_have_src && could_have_dest) {
5846 // This is going to pay off so emit the required guards
5847 if (!has_src) {
5848 src = maybe_cast_profiled_obj(src, src_k, true);
5849 src_type = _gvn.type(src);
5850 top_src = src_type->isa_aryptr();
5851 has_src = (top_src != nullptr && top_src->elem() != Type::BOTTOM);
5852 src_spec = true;
5853 }
5854 if (!has_dest) {
5855 dest = maybe_cast_profiled_obj(dest, dest_k, true);
5856 dest_type = _gvn.type(dest);
5857 top_dest = dest_type->isa_aryptr();
5858 has_dest = (top_dest != nullptr && top_dest->elem() != Type::BOTTOM);
5859 dest_spec = true;
5860 }
5861 }
5862 }
5863
5864 if (has_src && has_dest && can_emit_guards) {
5865 BasicType src_elem = top_src->isa_aryptr()->elem()->array_element_basic_type();
5866 BasicType dest_elem = top_dest->isa_aryptr()->elem()->array_element_basic_type();
5867 if (is_reference_type(src_elem, true)) src_elem = T_OBJECT;
5868 if (is_reference_type(dest_elem, true)) dest_elem = T_OBJECT;
5869
5870 if (src_elem == dest_elem && src_elem == T_OBJECT) {
5871 // If both arrays are object arrays then having the exact types
5872 // for both will remove the need for a subtype check at runtime
5873 // before the call and may make it possible to pick a faster copy
5874 // routine (without a subtype check on every element)
5875 // Do we have the exact type of src?
5876 bool could_have_src = src_spec;
5877 // Do we have the exact type of dest?
5878 bool could_have_dest = dest_spec;
5879 ciKlass* src_k = nullptr;
5880 ciKlass* dest_k = nullptr;
5881 if (!src_spec) {
5882 src_k = src_type->speculative_type_not_null();
5883 if (src_k != nullptr && src_k->is_array_klass()) {
5884 could_have_src = true;
5885 }
5886 }
5887 if (!dest_spec) {
5888 dest_k = dest_type->speculative_type_not_null();
5889 if (dest_k != nullptr && dest_k->is_array_klass()) {
5890 could_have_dest = true;
5891 }
5892 }
5893 if (could_have_src && could_have_dest) {
5894 // If we can have both exact types, emit the missing guards
5895 if (could_have_src && !src_spec) {
5896 src = maybe_cast_profiled_obj(src, src_k, true);
5897 }
5898 if (could_have_dest && !dest_spec) {
5899 dest = maybe_cast_profiled_obj(dest, dest_k, true);
5900 }
5901 }
5902 }
5903 }
5904
5905 ciMethod* trap_method = method();
5906 int trap_bci = bci();
5907 if (saved_jvms_before_guards != nullptr) {
5908 trap_method = alloc->jvms()->method();
5909 trap_bci = alloc->jvms()->bci();
5910 }
5911
5912 bool negative_length_guard_generated = false;
5913
5914 if (!C->too_many_traps(trap_method, trap_bci, Deoptimization::Reason_intrinsic) &&
5915 can_emit_guards &&
5916 !src->is_top() && !dest->is_top()) {
5917 // validate arguments: enables transformation the ArrayCopyNode
5918 validated = true;
5919
5920 RegionNode* slow_region = new RegionNode(1);
5921 record_for_igvn(slow_region);
5922
5923 // (1) src and dest are arrays.
5924 generate_non_array_guard(load_object_klass(src), slow_region, &src);
5925 generate_non_array_guard(load_object_klass(dest), slow_region, &dest);
5926
5927 // (2) src and dest arrays must have elements of the same BasicType
5928 // done at macro expansion or at Ideal transformation time
5929
5930 // (4) src_offset must not be negative.
5931 generate_negative_guard(src_offset, slow_region);
5932
5933 // (5) dest_offset must not be negative.
5934 generate_negative_guard(dest_offset, slow_region);
5935
5936 // (7) src_offset + length must not exceed length of src.
5937 generate_limit_guard(src_offset, length,
5938 load_array_length(src),
5939 slow_region);
5940
5941 // (8) dest_offset + length must not exceed length of dest.
5942 generate_limit_guard(dest_offset, length,
5943 load_array_length(dest),
5944 slow_region);
5945
5946 // (6) length must not be negative.
5947 // This is also checked in generate_arraycopy() during macro expansion, but
5948 // we also have to check it here for the case where the ArrayCopyNode will
5949 // be eliminated by Escape Analysis.
5950 if (EliminateAllocations) {
5951 generate_negative_guard(length, slow_region);
5952 negative_length_guard_generated = true;
5953 }
5954
5955 // (9) each element of an oop array must be assignable
5956 Node* dest_klass = load_object_klass(dest);
5957 if (src != dest) {
5958 Node* not_subtype_ctrl = gen_subtype_check(src, dest_klass);
5959
5960 if (not_subtype_ctrl != top()) {
5961 PreserveJVMState pjvms(this);
5962 set_control(not_subtype_ctrl);
5963 uncommon_trap(Deoptimization::Reason_intrinsic,
5964 Deoptimization::Action_make_not_entrant);
5965 assert(stopped(), "Should be stopped");
5966 }
5967 }
5968 {
5969 PreserveJVMState pjvms(this);
5970 set_control(_gvn.transform(slow_region));
5971 uncommon_trap(Deoptimization::Reason_intrinsic,
5972 Deoptimization::Action_make_not_entrant);
5973 assert(stopped(), "Should be stopped");
5974 }
5975
5976 const TypeKlassPtr* dest_klass_t = _gvn.type(dest_klass)->is_klassptr();
5977 const Type *toop = dest_klass_t->cast_to_exactness(false)->as_instance_type();
5978 src = _gvn.transform(new CheckCastPPNode(control(), src, toop));
5979 arraycopy_move_allocation_here(alloc, dest, saved_jvms_before_guards, saved_reexecute_sp, new_idx);
5980 }
5981
5982 if (stopped()) {
5983 return true;
5984 }
5985
5986 ArrayCopyNode* ac = ArrayCopyNode::make(this, true, src, src_offset, dest, dest_offset, length, alloc != nullptr, negative_length_guard_generated,
5987 // Create LoadRange and LoadKlass nodes for use during macro expansion here
5988 // so the compiler has a chance to eliminate them: during macro expansion,
5989 // we have to set their control (CastPP nodes are eliminated).
5990 load_object_klass(src), load_object_klass(dest),
5991 load_array_length(src), load_array_length(dest));
5992
5993 ac->set_arraycopy(validated);
5994
5995 Node* n = _gvn.transform(ac);
5996 if (n == ac) {
5997 ac->connect_outputs(this);
5998 } else {
5999 assert(validated, "shouldn't transform if all arguments not validated");
6000 set_all_memory(n);
6001 }
6002 clear_upper_avx();
6003
6004
6005 return true;
6006 }
6007
6008
6009 // Helper function which determines if an arraycopy immediately follows
6010 // an allocation, with no intervening tests or other escapes for the object.
6011 AllocateArrayNode*
6012 LibraryCallKit::tightly_coupled_allocation(Node* ptr) {
6013 if (stopped()) return nullptr; // no fast path
6014 if (!C->do_aliasing()) return nullptr; // no MergeMems around
6015
6016 AllocateArrayNode* alloc = AllocateArrayNode::Ideal_array_allocation(ptr);
6017 if (alloc == nullptr) return nullptr;
6018
6019 Node* rawmem = memory(Compile::AliasIdxRaw);
6020 // Is the allocation's memory state untouched?
6021 if (!(rawmem->is_Proj() && rawmem->in(0)->is_Initialize())) {
6022 // Bail out if there have been raw-memory effects since the allocation.
6023 // (Example: There might have been a call or safepoint.)
6024 return nullptr;
6025 }
6026 rawmem = rawmem->in(0)->as_Initialize()->memory(Compile::AliasIdxRaw);
6027 if (!(rawmem->is_Proj() && rawmem->in(0) == alloc)) {
6028 return nullptr;
6029 }
6030
6031 // There must be no unexpected observers of this allocation.
6032 for (DUIterator_Fast imax, i = ptr->fast_outs(imax); i < imax; i++) {
6033 Node* obs = ptr->fast_out(i);
6034 if (obs != this->map()) {
6035 return nullptr;
6036 }
6037 }
6038
6039 // This arraycopy must unconditionally follow the allocation of the ptr.
6040 Node* alloc_ctl = ptr->in(0);
6041 Node* ctl = control();
6042 while (ctl != alloc_ctl) {
6043 // There may be guards which feed into the slow_region.
6044 // Any other control flow means that we might not get a chance
6045 // to finish initializing the allocated object.
6046 // Various low-level checks bottom out in uncommon traps. These
6047 // are considered safe since we've already checked above that
6048 // there is no unexpected observer of this allocation.
6049 if (get_uncommon_trap_from_success_proj(ctl) != nullptr) {
6050 assert(ctl->in(0)->is_If(), "must be If");
6051 ctl = ctl->in(0)->in(0);
6052 } else {
6053 return nullptr;
6054 }
6055 }
6056
6057 // If we get this far, we have an allocation which immediately
6058 // precedes the arraycopy, and we can take over zeroing the new object.
6059 // The arraycopy will finish the initialization, and provide
6060 // a new control state to which we will anchor the destination pointer.
6061
6062 return alloc;
6063 }
6064
6065 CallStaticJavaNode* LibraryCallKit::get_uncommon_trap_from_success_proj(Node* node) {
6066 if (node->is_IfProj()) {
6067 Node* other_proj = node->as_IfProj()->other_if_proj();
6068 for (DUIterator_Fast jmax, j = other_proj->fast_outs(jmax); j < jmax; j++) {
6069 Node* obs = other_proj->fast_out(j);
6070 if (obs->in(0) == other_proj && obs->is_CallStaticJava() &&
6071 (obs->as_CallStaticJava()->entry_point() == OptoRuntime::uncommon_trap_blob()->entry_point())) {
6072 return obs->as_CallStaticJava();
6073 }
6074 }
6075 }
6076 return nullptr;
6077 }
6078
6079 //-------------inline_encodeISOArray-----------------------------------
6080 // encode char[] to byte[] in ISO_8859_1 or ASCII
6081 bool LibraryCallKit::inline_encodeISOArray(bool ascii) {
6082 assert(callee()->signature()->size() == 5, "encodeISOArray has 5 parameters");
6083 // no receiver since it is static method
6084 Node *src = argument(0);
6085 Node *src_offset = argument(1);
6086 Node *dst = argument(2);
6087 Node *dst_offset = argument(3);
6088 Node *length = argument(4);
6089
6090 src = must_be_not_null(src, true);
6091 dst = must_be_not_null(dst, true);
6092
6093 const TypeAryPtr* src_type = src->Value(&_gvn)->isa_aryptr();
6094 const TypeAryPtr* dst_type = dst->Value(&_gvn)->isa_aryptr();
6095 if (src_type == nullptr || src_type->elem() == Type::BOTTOM ||
6096 dst_type == nullptr || dst_type->elem() == Type::BOTTOM) {
6097 // failed array check
6098 return false;
6099 }
6100
6101 // Figure out the size and type of the elements we will be copying.
6102 BasicType src_elem = src_type->elem()->array_element_basic_type();
6103 BasicType dst_elem = dst_type->elem()->array_element_basic_type();
6104 if (!((src_elem == T_CHAR) || (src_elem== T_BYTE)) || dst_elem != T_BYTE) {
6105 return false;
6106 }
6107
6108 Node* src_start = array_element_address(src, src_offset, T_CHAR);
6109 Node* dst_start = array_element_address(dst, dst_offset, dst_elem);
6110 // 'src_start' points to src array + scaled offset
6111 // 'dst_start' points to dst array + scaled offset
6112
6113 const TypeAryPtr* mtype = TypeAryPtr::BYTES;
6114 Node* enc = new EncodeISOArrayNode(control(), memory(mtype), src_start, dst_start, length, ascii);
6115 enc = _gvn.transform(enc);
6116 Node* res_mem = _gvn.transform(new SCMemProjNode(enc));
6117 set_memory(res_mem, mtype);
6118 set_result(enc);
6119 clear_upper_avx();
6120
6121 return true;
6122 }
6123
6124 //-------------inline_multiplyToLen-----------------------------------
6125 bool LibraryCallKit::inline_multiplyToLen() {
6126 assert(UseMultiplyToLenIntrinsic, "not implemented on this platform");
6127
6128 address stubAddr = StubRoutines::multiplyToLen();
6129 if (stubAddr == nullptr) {
6130 return false; // Intrinsic's stub is not implemented on this platform
6131 }
6132 const char* stubName = "multiplyToLen";
6133
6134 assert(callee()->signature()->size() == 5, "multiplyToLen has 5 parameters");
6135
6136 // no receiver because it is a static method
6137 Node* x = argument(0);
6138 Node* xlen = argument(1);
6139 Node* y = argument(2);
6140 Node* ylen = argument(3);
6141 Node* z = argument(4);
6142
6143 x = must_be_not_null(x, true);
6144 y = must_be_not_null(y, true);
6145
6146 const TypeAryPtr* x_type = x->Value(&_gvn)->isa_aryptr();
6147 const TypeAryPtr* y_type = y->Value(&_gvn)->isa_aryptr();
6148 if (x_type == nullptr || x_type->elem() == Type::BOTTOM ||
6149 y_type == nullptr || y_type->elem() == Type::BOTTOM) {
6150 // failed array check
6151 return false;
6152 }
6153
6154 BasicType x_elem = x_type->elem()->array_element_basic_type();
6155 BasicType y_elem = y_type->elem()->array_element_basic_type();
6156 if (x_elem != T_INT || y_elem != T_INT) {
6157 return false;
6158 }
6159
6160 Node* x_start = array_element_address(x, intcon(0), x_elem);
6161 Node* y_start = array_element_address(y, intcon(0), y_elem);
6162 // 'x_start' points to x array + scaled xlen
6163 // 'y_start' points to y array + scaled ylen
6164
6165 Node* z_start = array_element_address(z, intcon(0), T_INT);
6166
6167 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP,
6168 OptoRuntime::multiplyToLen_Type(),
6169 stubAddr, stubName, TypePtr::BOTTOM,
6170 x_start, xlen, y_start, ylen, z_start);
6171
6172 C->set_has_split_ifs(true); // Has chance for split-if optimization
6173 set_result(z);
6174 return true;
6175 }
6176
6177 //-------------inline_squareToLen------------------------------------
6178 bool LibraryCallKit::inline_squareToLen() {
6179 assert(UseSquareToLenIntrinsic, "not implemented on this platform");
6180
6181 address stubAddr = StubRoutines::squareToLen();
6182 if (stubAddr == nullptr) {
6183 return false; // Intrinsic's stub is not implemented on this platform
6184 }
6185 const char* stubName = "squareToLen";
6186
6187 assert(callee()->signature()->size() == 4, "implSquareToLen has 4 parameters");
6188
6189 Node* x = argument(0);
6190 Node* len = argument(1);
6191 Node* z = argument(2);
6192 Node* zlen = argument(3);
6193
6194 x = must_be_not_null(x, true);
6195 z = must_be_not_null(z, true);
6196
6197 const TypeAryPtr* x_type = x->Value(&_gvn)->isa_aryptr();
6198 const TypeAryPtr* z_type = z->Value(&_gvn)->isa_aryptr();
6199 if (x_type == nullptr || x_type->elem() == Type::BOTTOM ||
6200 z_type == nullptr || z_type->elem() == Type::BOTTOM) {
6201 // failed array check
6202 return false;
6203 }
6204
6205 BasicType x_elem = x_type->elem()->array_element_basic_type();
6206 BasicType z_elem = z_type->elem()->array_element_basic_type();
6207 if (x_elem != T_INT || z_elem != T_INT) {
6208 return false;
6209 }
6210
6211
6212 Node* x_start = array_element_address(x, intcon(0), x_elem);
6213 Node* z_start = array_element_address(z, intcon(0), z_elem);
6214
6215 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP,
6216 OptoRuntime::squareToLen_Type(),
6217 stubAddr, stubName, TypePtr::BOTTOM,
6218 x_start, len, z_start, zlen);
6219
6220 set_result(z);
6221 return true;
6222 }
6223
6224 //-------------inline_mulAdd------------------------------------------
6225 bool LibraryCallKit::inline_mulAdd() {
6226 assert(UseMulAddIntrinsic, "not implemented on this platform");
6227
6228 address stubAddr = StubRoutines::mulAdd();
6229 if (stubAddr == nullptr) {
6230 return false; // Intrinsic's stub is not implemented on this platform
6231 }
6232 const char* stubName = "mulAdd";
6233
6234 assert(callee()->signature()->size() == 5, "mulAdd has 5 parameters");
6235
6236 Node* out = argument(0);
6237 Node* in = argument(1);
6238 Node* offset = argument(2);
6239 Node* len = argument(3);
6240 Node* k = argument(4);
6241
6242 in = must_be_not_null(in, true);
6243 out = must_be_not_null(out, true);
6244
6245 const TypeAryPtr* out_type = out->Value(&_gvn)->isa_aryptr();
6246 const TypeAryPtr* in_type = in->Value(&_gvn)->isa_aryptr();
6247 if (out_type == nullptr || out_type->elem() == Type::BOTTOM ||
6248 in_type == nullptr || in_type->elem() == Type::BOTTOM) {
6249 // failed array check
6250 return false;
6251 }
6252
6253 BasicType out_elem = out_type->elem()->array_element_basic_type();
6254 BasicType in_elem = in_type->elem()->array_element_basic_type();
6255 if (out_elem != T_INT || in_elem != T_INT) {
6256 return false;
6257 }
6258
6259 Node* outlen = load_array_length(out);
6260 Node* new_offset = _gvn.transform(new SubINode(outlen, offset));
6261 Node* out_start = array_element_address(out, intcon(0), out_elem);
6262 Node* in_start = array_element_address(in, intcon(0), in_elem);
6263
6264 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP,
6265 OptoRuntime::mulAdd_Type(),
6266 stubAddr, stubName, TypePtr::BOTTOM,
6267 out_start,in_start, new_offset, len, k);
6268 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms));
6269 set_result(result);
6270 return true;
6271 }
6272
6273 //-------------inline_montgomeryMultiply-----------------------------------
6274 bool LibraryCallKit::inline_montgomeryMultiply() {
6275 address stubAddr = StubRoutines::montgomeryMultiply();
6276 if (stubAddr == nullptr) {
6277 return false; // Intrinsic's stub is not implemented on this platform
6278 }
6279
6280 assert(UseMontgomeryMultiplyIntrinsic, "not implemented on this platform");
6281 const char* stubName = "montgomery_multiply";
6282
6283 assert(callee()->signature()->size() == 7, "montgomeryMultiply has 7 parameters");
6284
6285 Node* a = argument(0);
6286 Node* b = argument(1);
6287 Node* n = argument(2);
6288 Node* len = argument(3);
6289 Node* inv = argument(4);
6290 Node* m = argument(6);
6291
6292 const TypeAryPtr* a_type = a->Value(&_gvn)->isa_aryptr();
6293 const TypeAryPtr* b_type = b->Value(&_gvn)->isa_aryptr();
6294 const TypeAryPtr* n_type = n->Value(&_gvn)->isa_aryptr();
6295 const TypeAryPtr* m_type = m->Value(&_gvn)->isa_aryptr();
6296 if (a_type == nullptr || a_type->elem() == Type::BOTTOM ||
6297 b_type == nullptr || b_type->elem() == Type::BOTTOM ||
6298 n_type == nullptr || n_type->elem() == Type::BOTTOM ||
6299 m_type == nullptr || m_type->elem() == Type::BOTTOM) {
6300 // failed array check
6301 return false;
6302 }
6303
6304 BasicType a_elem = a_type->elem()->array_element_basic_type();
6305 BasicType b_elem = b_type->elem()->array_element_basic_type();
6306 BasicType n_elem = n_type->elem()->array_element_basic_type();
6307 BasicType m_elem = m_type->elem()->array_element_basic_type();
6308 if (a_elem != T_INT || b_elem != T_INT || n_elem != T_INT || m_elem != T_INT) {
6309 return false;
6310 }
6311
6312 // Make the call
6313 {
6314 Node* a_start = array_element_address(a, intcon(0), a_elem);
6315 Node* b_start = array_element_address(b, intcon(0), b_elem);
6316 Node* n_start = array_element_address(n, intcon(0), n_elem);
6317 Node* m_start = array_element_address(m, intcon(0), m_elem);
6318
6319 Node* call = make_runtime_call(RC_LEAF,
6320 OptoRuntime::montgomeryMultiply_Type(),
6321 stubAddr, stubName, TypePtr::BOTTOM,
6322 a_start, b_start, n_start, len, inv, top(),
6323 m_start);
6324 set_result(m);
6325 }
6326
6327 return true;
6328 }
6329
6330 bool LibraryCallKit::inline_montgomerySquare() {
6331 address stubAddr = StubRoutines::montgomerySquare();
6332 if (stubAddr == nullptr) {
6333 return false; // Intrinsic's stub is not implemented on this platform
6334 }
6335
6336 assert(UseMontgomerySquareIntrinsic, "not implemented on this platform");
6337 const char* stubName = "montgomery_square";
6338
6339 assert(callee()->signature()->size() == 6, "montgomerySquare has 6 parameters");
6340
6341 Node* a = argument(0);
6342 Node* n = argument(1);
6343 Node* len = argument(2);
6344 Node* inv = argument(3);
6345 Node* m = argument(5);
6346
6347 const TypeAryPtr* a_type = a->Value(&_gvn)->isa_aryptr();
6348 const TypeAryPtr* n_type = n->Value(&_gvn)->isa_aryptr();
6349 const TypeAryPtr* m_type = m->Value(&_gvn)->isa_aryptr();
6350 if (a_type == nullptr || a_type->elem() == Type::BOTTOM ||
6351 n_type == nullptr || n_type->elem() == Type::BOTTOM ||
6352 m_type == nullptr || m_type->elem() == Type::BOTTOM) {
6353 // failed array check
6354 return false;
6355 }
6356
6357 BasicType a_elem = a_type->elem()->array_element_basic_type();
6358 BasicType n_elem = n_type->elem()->array_element_basic_type();
6359 BasicType m_elem = m_type->elem()->array_element_basic_type();
6360 if (a_elem != T_INT || n_elem != T_INT || m_elem != T_INT) {
6361 return false;
6362 }
6363
6364 // Make the call
6365 {
6366 Node* a_start = array_element_address(a, intcon(0), a_elem);
6367 Node* n_start = array_element_address(n, intcon(0), n_elem);
6368 Node* m_start = array_element_address(m, intcon(0), m_elem);
6369
6370 Node* call = make_runtime_call(RC_LEAF,
6371 OptoRuntime::montgomerySquare_Type(),
6372 stubAddr, stubName, TypePtr::BOTTOM,
6373 a_start, n_start, len, inv, top(),
6374 m_start);
6375 set_result(m);
6376 }
6377
6378 return true;
6379 }
6380
6381 bool LibraryCallKit::inline_bigIntegerShift(bool isRightShift) {
6382 address stubAddr = nullptr;
6383 const char* stubName = nullptr;
6384
6385 stubAddr = isRightShift? StubRoutines::bigIntegerRightShift(): StubRoutines::bigIntegerLeftShift();
6386 if (stubAddr == nullptr) {
6387 return false; // Intrinsic's stub is not implemented on this platform
6388 }
6389
6390 stubName = isRightShift? "bigIntegerRightShiftWorker" : "bigIntegerLeftShiftWorker";
6391
6392 assert(callee()->signature()->size() == 5, "expected 5 arguments");
6393
6394 Node* newArr = argument(0);
6395 Node* oldArr = argument(1);
6396 Node* newIdx = argument(2);
6397 Node* shiftCount = argument(3);
6398 Node* numIter = argument(4);
6399
6400 const TypeAryPtr* newArr_type = newArr->Value(&_gvn)->isa_aryptr();
6401 const TypeAryPtr* oldArr_type = oldArr->Value(&_gvn)->isa_aryptr();
6402 if (newArr_type == nullptr || newArr_type->elem() == Type::BOTTOM ||
6403 oldArr_type == nullptr || oldArr_type->elem() == Type::BOTTOM) {
6404 return false;
6405 }
6406
6407 BasicType newArr_elem = newArr_type->elem()->array_element_basic_type();
6408 BasicType oldArr_elem = oldArr_type->elem()->array_element_basic_type();
6409 if (newArr_elem != T_INT || oldArr_elem != T_INT) {
6410 return false;
6411 }
6412
6413 // Make the call
6414 {
6415 Node* newArr_start = array_element_address(newArr, intcon(0), newArr_elem);
6416 Node* oldArr_start = array_element_address(oldArr, intcon(0), oldArr_elem);
6417
6418 Node* call = make_runtime_call(RC_LEAF,
6419 OptoRuntime::bigIntegerShift_Type(),
6420 stubAddr,
6421 stubName,
6422 TypePtr::BOTTOM,
6423 newArr_start,
6424 oldArr_start,
6425 newIdx,
6426 shiftCount,
6427 numIter);
6428 }
6429
6430 return true;
6431 }
6432
6433 //-------------inline_vectorizedMismatch------------------------------
6434 bool LibraryCallKit::inline_vectorizedMismatch() {
6435 assert(UseVectorizedMismatchIntrinsic, "not implemented on this platform");
6436
6437 assert(callee()->signature()->size() == 8, "vectorizedMismatch has 6 parameters");
6438 Node* obja = argument(0); // Object
6439 Node* aoffset = argument(1); // long
6440 Node* objb = argument(3); // Object
6441 Node* boffset = argument(4); // long
6442 Node* length = argument(6); // int
6443 Node* scale = argument(7); // int
6444
6445 const TypeAryPtr* obja_t = _gvn.type(obja)->isa_aryptr();
6446 const TypeAryPtr* objb_t = _gvn.type(objb)->isa_aryptr();
6447 if (obja_t == nullptr || obja_t->elem() == Type::BOTTOM ||
6448 objb_t == nullptr || objb_t->elem() == Type::BOTTOM ||
6449 scale == top()) {
6450 return false; // failed input validation
6451 }
6452
6453 Node* obja_adr = make_unsafe_address(obja, aoffset);
6454 Node* objb_adr = make_unsafe_address(objb, boffset);
6455
6456 // Partial inlining handling for inputs smaller than ArrayOperationPartialInlineSize bytes in size.
6457 //
6458 // inline_limit = ArrayOperationPartialInlineSize / element_size;
6459 // if (length <= inline_limit) {
6460 // inline_path:
6461 // vmask = VectorMaskGen length
6462 // vload1 = LoadVectorMasked obja, vmask
6463 // vload2 = LoadVectorMasked objb, vmask
6464 // result1 = VectorCmpMasked vload1, vload2, vmask
6465 // } else {
6466 // call_stub_path:
6467 // result2 = call vectorizedMismatch_stub(obja, objb, length, scale)
6468 // }
6469 // exit_block:
6470 // return Phi(result1, result2);
6471 //
6472 enum { inline_path = 1, // input is small enough to process it all at once
6473 stub_path = 2, // input is too large; call into the VM
6474 PATH_LIMIT = 3
6475 };
6476
6477 Node* exit_block = new RegionNode(PATH_LIMIT);
6478 Node* result_phi = new PhiNode(exit_block, TypeInt::INT);
6479 Node* memory_phi = new PhiNode(exit_block, Type::MEMORY, TypePtr::BOTTOM);
6480
6481 Node* call_stub_path = control();
6482
6483 BasicType elem_bt = T_ILLEGAL;
6484
6485 const TypeInt* scale_t = _gvn.type(scale)->is_int();
6486 if (scale_t->is_con()) {
6487 switch (scale_t->get_con()) {
6488 case 0: elem_bt = T_BYTE; break;
6489 case 1: elem_bt = T_SHORT; break;
6490 case 2: elem_bt = T_INT; break;
6491 case 3: elem_bt = T_LONG; break;
6492
6493 default: elem_bt = T_ILLEGAL; break; // not supported
6494 }
6495 }
6496
6497 int inline_limit = 0;
6498 bool do_partial_inline = false;
6499
6500 if (elem_bt != T_ILLEGAL && ArrayOperationPartialInlineSize > 0) {
6501 inline_limit = ArrayOperationPartialInlineSize / type2aelembytes(elem_bt);
6502 do_partial_inline = inline_limit >= 16;
6503 }
6504
6505 if (do_partial_inline) {
6506 assert(elem_bt != T_ILLEGAL, "sanity");
6507
6508 if (Matcher::match_rule_supported_vector(Op_VectorMaskGen, inline_limit, elem_bt) &&
6509 Matcher::match_rule_supported_vector(Op_LoadVectorMasked, inline_limit, elem_bt) &&
6510 Matcher::match_rule_supported_vector(Op_VectorCmpMasked, inline_limit, elem_bt)) {
6511
6512 const TypeVect* vt = TypeVect::make(elem_bt, inline_limit);
6513 Node* cmp_length = _gvn.transform(new CmpINode(length, intcon(inline_limit)));
6514 Node* bol_gt = _gvn.transform(new BoolNode(cmp_length, BoolTest::gt));
6515
6516 call_stub_path = generate_guard(bol_gt, nullptr, PROB_MIN);
6517
6518 if (!stopped()) {
6519 Node* casted_length = _gvn.transform(new CastIINode(control(), length, TypeInt::make(0, inline_limit, Type::WidenMin)));
6520
6521 const TypePtr* obja_adr_t = _gvn.type(obja_adr)->isa_ptr();
6522 const TypePtr* objb_adr_t = _gvn.type(objb_adr)->isa_ptr();
6523 Node* obja_adr_mem = memory(C->get_alias_index(obja_adr_t));
6524 Node* objb_adr_mem = memory(C->get_alias_index(objb_adr_t));
6525
6526 Node* vmask = _gvn.transform(VectorMaskGenNode::make(ConvI2X(casted_length), elem_bt));
6527 Node* vload_obja = _gvn.transform(new LoadVectorMaskedNode(control(), obja_adr_mem, obja_adr, obja_adr_t, vt, vmask));
6528 Node* vload_objb = _gvn.transform(new LoadVectorMaskedNode(control(), objb_adr_mem, objb_adr, objb_adr_t, vt, vmask));
6529 Node* result = _gvn.transform(new VectorCmpMaskedNode(vload_obja, vload_objb, vmask, TypeInt::INT));
6530
6531 exit_block->init_req(inline_path, control());
6532 memory_phi->init_req(inline_path, map()->memory());
6533 result_phi->init_req(inline_path, result);
6534
6535 C->set_max_vector_size(MAX2((uint)ArrayOperationPartialInlineSize, C->max_vector_size()));
6536 clear_upper_avx();
6537 }
6538 }
6539 }
6540
6541 if (call_stub_path != nullptr) {
6542 set_control(call_stub_path);
6543
6544 Node* call = make_runtime_call(RC_LEAF,
6545 OptoRuntime::vectorizedMismatch_Type(),
6546 StubRoutines::vectorizedMismatch(), "vectorizedMismatch", TypePtr::BOTTOM,
6547 obja_adr, objb_adr, length, scale);
6548
6549 exit_block->init_req(stub_path, control());
6550 memory_phi->init_req(stub_path, map()->memory());
6551 result_phi->init_req(stub_path, _gvn.transform(new ProjNode(call, TypeFunc::Parms)));
6552 }
6553
6554 exit_block = _gvn.transform(exit_block);
6555 memory_phi = _gvn.transform(memory_phi);
6556 result_phi = _gvn.transform(result_phi);
6557
6558 set_control(exit_block);
6559 set_all_memory(memory_phi);
6560 set_result(result_phi);
6561
6562 return true;
6563 }
6564
6565 //------------------------------inline_vectorizedHashcode----------------------------
6566 bool LibraryCallKit::inline_vectorizedHashCode() {
6567 assert(UseVectorizedHashCodeIntrinsic, "not implemented on this platform");
6568
6569 assert(callee()->signature()->size() == 5, "vectorizedHashCode has 5 parameters");
6570 Node* array = argument(0);
6571 Node* offset = argument(1);
6572 Node* length = argument(2);
6573 Node* initialValue = argument(3);
6574 Node* basic_type = argument(4);
6575
6576 if (basic_type == top()) {
6577 return false; // failed input validation
6578 }
6579
6580 const TypeInt* basic_type_t = _gvn.type(basic_type)->is_int();
6581 if (!basic_type_t->is_con()) {
6582 return false; // Only intrinsify if mode argument is constant
6583 }
6584
6585 array = must_be_not_null(array, true);
6586
6587 BasicType bt = (BasicType)basic_type_t->get_con();
6588
6589 // Resolve address of first element
6590 Node* array_start = array_element_address(array, offset, bt);
6591
6592 set_result(_gvn.transform(new VectorizedHashCodeNode(control(), memory(TypeAryPtr::get_array_body_type(bt)),
6593 array_start, length, initialValue, basic_type)));
6594 clear_upper_avx();
6595
6596 return true;
6597 }
6598
6599 /**
6600 * Calculate CRC32 for byte.
6601 * int java.util.zip.CRC32.update(int crc, int b)
6602 */
6603 bool LibraryCallKit::inline_updateCRC32() {
6604 assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions support");
6605 assert(callee()->signature()->size() == 2, "update has 2 parameters");
6606 // no receiver since it is static method
6607 Node* crc = argument(0); // type: int
6608 Node* b = argument(1); // type: int
6609
6610 /*
6611 * int c = ~ crc;
6612 * b = timesXtoThe32[(b ^ c) & 0xFF];
6613 * b = b ^ (c >>> 8);
6614 * crc = ~b;
6615 */
6616
6617 Node* M1 = intcon(-1);
6618 crc = _gvn.transform(new XorINode(crc, M1));
6619 Node* result = _gvn.transform(new XorINode(crc, b));
6620 result = _gvn.transform(new AndINode(result, intcon(0xFF)));
6621
6622 Node* base = makecon(TypeRawPtr::make(StubRoutines::crc_table_addr()));
6623 Node* offset = _gvn.transform(new LShiftINode(result, intcon(0x2)));
6624 Node* adr = basic_plus_adr(top(), base, ConvI2X(offset));
6625 result = make_load(control(), adr, TypeInt::INT, T_INT, MemNode::unordered);
6626
6627 crc = _gvn.transform(new URShiftINode(crc, intcon(8)));
6628 result = _gvn.transform(new XorINode(crc, result));
6629 result = _gvn.transform(new XorINode(result, M1));
6630 set_result(result);
6631 return true;
6632 }
6633
6634 /**
6635 * Calculate CRC32 for byte[] array.
6636 * int java.util.zip.CRC32.updateBytes(int crc, byte[] buf, int off, int len)
6637 */
6638 bool LibraryCallKit::inline_updateBytesCRC32() {
6639 assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions support");
6640 assert(callee()->signature()->size() == 4, "updateBytes has 4 parameters");
6641 // no receiver since it is static method
6642 Node* crc = argument(0); // type: int
6643 Node* src = argument(1); // type: oop
6644 Node* offset = argument(2); // type: int
6645 Node* length = argument(3); // type: int
6646
6647 const TypeAryPtr* src_type = src->Value(&_gvn)->isa_aryptr();
6648 if (src_type == nullptr || src_type->elem() == Type::BOTTOM) {
6649 // failed array check
6650 return false;
6651 }
6652
6653 // Figure out the size and type of the elements we will be copying.
6654 BasicType src_elem = src_type->elem()->array_element_basic_type();
6655 if (src_elem != T_BYTE) {
6656 return false;
6657 }
6658
6659 // 'src_start' points to src array + scaled offset
6660 src = must_be_not_null(src, true);
6661 Node* src_start = array_element_address(src, offset, src_elem);
6662
6663 // We assume that range check is done by caller.
6664 // TODO: generate range check (offset+length < src.length) in debug VM.
6665
6666 // Call the stub.
6667 address stubAddr = StubRoutines::updateBytesCRC32();
6668 const char *stubName = "updateBytesCRC32";
6669
6670 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::updateBytesCRC32_Type(),
6671 stubAddr, stubName, TypePtr::BOTTOM,
6672 crc, src_start, length);
6673 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms));
6674 set_result(result);
6675 return true;
6676 }
6677
6678 /**
6679 * Calculate CRC32 for ByteBuffer.
6680 * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len)
6681 */
6682 bool LibraryCallKit::inline_updateByteBufferCRC32() {
6683 assert(UseCRC32Intrinsics, "need AVX and CLMUL instructions support");
6684 assert(callee()->signature()->size() == 5, "updateByteBuffer has 4 parameters and one is long");
6685 // no receiver since it is static method
6686 Node* crc = argument(0); // type: int
6687 Node* src = argument(1); // type: long
6688 Node* offset = argument(3); // type: int
6689 Node* length = argument(4); // type: int
6690
6691 src = ConvL2X(src); // adjust Java long to machine word
6692 Node* base = _gvn.transform(new CastX2PNode(src));
6693 offset = ConvI2X(offset);
6694
6695 // 'src_start' points to src array + scaled offset
6696 Node* src_start = basic_plus_adr(top(), base, offset);
6697
6698 // Call the stub.
6699 address stubAddr = StubRoutines::updateBytesCRC32();
6700 const char *stubName = "updateBytesCRC32";
6701
6702 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::updateBytesCRC32_Type(),
6703 stubAddr, stubName, TypePtr::BOTTOM,
6704 crc, src_start, length);
6705 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms));
6706 set_result(result);
6707 return true;
6708 }
6709
6710 //------------------------------get_table_from_crc32c_class-----------------------
6711 Node * LibraryCallKit::get_table_from_crc32c_class(ciInstanceKlass *crc32c_class) {
6712 Node* table = load_field_from_object(nullptr, "byteTable", "[I", /*decorators*/ IN_HEAP, /*is_static*/ true, crc32c_class);
6713 assert (table != nullptr, "wrong version of java.util.zip.CRC32C");
6714
6715 return table;
6716 }
6717
6718 //------------------------------inline_updateBytesCRC32C-----------------------
6719 //
6720 // Calculate CRC32C for byte[] array.
6721 // int java.util.zip.CRC32C.updateBytes(int crc, byte[] buf, int off, int end)
6722 //
6723 bool LibraryCallKit::inline_updateBytesCRC32C() {
6724 assert(UseCRC32CIntrinsics, "need CRC32C instruction support");
6725 assert(callee()->signature()->size() == 4, "updateBytes has 4 parameters");
6726 assert(callee()->holder()->is_loaded(), "CRC32C class must be loaded");
6727 // no receiver since it is a static method
6728 Node* crc = argument(0); // type: int
6729 Node* src = argument(1); // type: oop
6730 Node* offset = argument(2); // type: int
6731 Node* end = argument(3); // type: int
6732
6733 Node* length = _gvn.transform(new SubINode(end, offset));
6734
6735 const TypeAryPtr* src_type = src->Value(&_gvn)->isa_aryptr();
6736 if (src_type == nullptr || src_type->elem() == Type::BOTTOM) {
6737 // failed array check
6738 return false;
6739 }
6740
6741 // Figure out the size and type of the elements we will be copying.
6742 BasicType src_elem = src_type->elem()->array_element_basic_type();
6743 if (src_elem != T_BYTE) {
6744 return false;
6745 }
6746
6747 // 'src_start' points to src array + scaled offset
6748 src = must_be_not_null(src, true);
6749 Node* src_start = array_element_address(src, offset, src_elem);
6750
6751 // static final int[] byteTable in class CRC32C
6752 Node* table = get_table_from_crc32c_class(callee()->holder());
6753 table = must_be_not_null(table, true);
6754 Node* table_start = array_element_address(table, intcon(0), T_INT);
6755
6756 // We assume that range check is done by caller.
6757 // TODO: generate range check (offset+length < src.length) in debug VM.
6758
6759 // Call the stub.
6760 address stubAddr = StubRoutines::updateBytesCRC32C();
6761 const char *stubName = "updateBytesCRC32C";
6762
6763 Node* call = make_runtime_call(RC_LEAF, OptoRuntime::updateBytesCRC32C_Type(),
6764 stubAddr, stubName, TypePtr::BOTTOM,
6765 crc, src_start, length, table_start);
6766 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms));
6767 set_result(result);
6768 return true;
6769 }
6770
6771 //------------------------------inline_updateDirectByteBufferCRC32C-----------------------
6772 //
6773 // Calculate CRC32C for DirectByteBuffer.
6774 // int java.util.zip.CRC32C.updateDirectByteBuffer(int crc, long buf, int off, int end)
6775 //
6776 bool LibraryCallKit::inline_updateDirectByteBufferCRC32C() {
6777 assert(UseCRC32CIntrinsics, "need CRC32C instruction support");
6778 assert(callee()->signature()->size() == 5, "updateDirectByteBuffer has 4 parameters and one is long");
6779 assert(callee()->holder()->is_loaded(), "CRC32C class must be loaded");
6780 // no receiver since it is a static method
6781 Node* crc = argument(0); // type: int
6782 Node* src = argument(1); // type: long
6783 Node* offset = argument(3); // type: int
6784 Node* end = argument(4); // type: int
6785
6786 Node* length = _gvn.transform(new SubINode(end, offset));
6787
6788 src = ConvL2X(src); // adjust Java long to machine word
6789 Node* base = _gvn.transform(new CastX2PNode(src));
6790 offset = ConvI2X(offset);
6791
6792 // 'src_start' points to src array + scaled offset
6793 Node* src_start = basic_plus_adr(top(), base, offset);
6794
6795 // static final int[] byteTable in class CRC32C
6796 Node* table = get_table_from_crc32c_class(callee()->holder());
6797 table = must_be_not_null(table, true);
6798 Node* table_start = array_element_address(table, intcon(0), T_INT);
6799
6800 // Call the stub.
6801 address stubAddr = StubRoutines::updateBytesCRC32C();
6802 const char *stubName = "updateBytesCRC32C";
6803
6804 Node* call = make_runtime_call(RC_LEAF, OptoRuntime::updateBytesCRC32C_Type(),
6805 stubAddr, stubName, TypePtr::BOTTOM,
6806 crc, src_start, length, table_start);
6807 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms));
6808 set_result(result);
6809 return true;
6810 }
6811
6812 //------------------------------inline_updateBytesAdler32----------------------
6813 //
6814 // Calculate Adler32 checksum for byte[] array.
6815 // int java.util.zip.Adler32.updateBytes(int crc, byte[] buf, int off, int len)
6816 //
6817 bool LibraryCallKit::inline_updateBytesAdler32() {
6818 assert(UseAdler32Intrinsics, "Adler32 Intrinsic support need"); // check if we actually need to check this flag or check a different one
6819 assert(callee()->signature()->size() == 4, "updateBytes has 4 parameters");
6820 assert(callee()->holder()->is_loaded(), "Adler32 class must be loaded");
6821 // no receiver since it is static method
6822 Node* crc = argument(0); // type: int
6823 Node* src = argument(1); // type: oop
6824 Node* offset = argument(2); // type: int
6825 Node* length = argument(3); // type: int
6826
6827 const TypeAryPtr* src_type = src->Value(&_gvn)->isa_aryptr();
6828 if (src_type == nullptr || src_type->elem() == Type::BOTTOM) {
6829 // failed array check
6830 return false;
6831 }
6832
6833 // Figure out the size and type of the elements we will be copying.
6834 BasicType src_elem = src_type->elem()->array_element_basic_type();
6835 if (src_elem != T_BYTE) {
6836 return false;
6837 }
6838
6839 // 'src_start' points to src array + scaled offset
6840 Node* src_start = array_element_address(src, offset, src_elem);
6841
6842 // We assume that range check is done by caller.
6843 // TODO: generate range check (offset+length < src.length) in debug VM.
6844
6845 // Call the stub.
6846 address stubAddr = StubRoutines::updateBytesAdler32();
6847 const char *stubName = "updateBytesAdler32";
6848
6849 Node* call = make_runtime_call(RC_LEAF, OptoRuntime::updateBytesAdler32_Type(),
6850 stubAddr, stubName, TypePtr::BOTTOM,
6851 crc, src_start, length);
6852 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms));
6853 set_result(result);
6854 return true;
6855 }
6856
6857 //------------------------------inline_updateByteBufferAdler32---------------
6858 //
6859 // Calculate Adler32 checksum for DirectByteBuffer.
6860 // int java.util.zip.Adler32.updateByteBuffer(int crc, long buf, int off, int len)
6861 //
6862 bool LibraryCallKit::inline_updateByteBufferAdler32() {
6863 assert(UseAdler32Intrinsics, "Adler32 Intrinsic support need"); // check if we actually need to check this flag or check a different one
6864 assert(callee()->signature()->size() == 5, "updateByteBuffer has 4 parameters and one is long");
6865 assert(callee()->holder()->is_loaded(), "Adler32 class must be loaded");
6866 // no receiver since it is static method
6867 Node* crc = argument(0); // type: int
6868 Node* src = argument(1); // type: long
6869 Node* offset = argument(3); // type: int
6870 Node* length = argument(4); // type: int
6871
6872 src = ConvL2X(src); // adjust Java long to machine word
6873 Node* base = _gvn.transform(new CastX2PNode(src));
6874 offset = ConvI2X(offset);
6875
6876 // 'src_start' points to src array + scaled offset
6877 Node* src_start = basic_plus_adr(top(), base, offset);
6878
6879 // Call the stub.
6880 address stubAddr = StubRoutines::updateBytesAdler32();
6881 const char *stubName = "updateBytesAdler32";
6882
6883 Node* call = make_runtime_call(RC_LEAF, OptoRuntime::updateBytesAdler32_Type(),
6884 stubAddr, stubName, TypePtr::BOTTOM,
6885 crc, src_start, length);
6886
6887 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms));
6888 set_result(result);
6889 return true;
6890 }
6891
6892 //----------------------------inline_reference_get----------------------------
6893 // public T java.lang.ref.Reference.get();
6894 bool LibraryCallKit::inline_reference_get() {
6895 const int referent_offset = java_lang_ref_Reference::referent_offset();
6896
6897 // Get the argument:
6898 Node* reference_obj = null_check_receiver();
6899 if (stopped()) return true;
6900
6901 DecoratorSet decorators = IN_HEAP | ON_WEAK_OOP_REF;
6902 Node* result = load_field_from_object(reference_obj, "referent", "Ljava/lang/Object;",
6903 decorators, /*is_static*/ false, nullptr);
6904 if (result == nullptr) return false;
6905
6906 // Add memory barrier to prevent commoning reads from this field
6907 // across safepoint since GC can change its value.
6908 insert_mem_bar(Op_MemBarCPUOrder);
6909
6910 set_result(result);
6911 return true;
6912 }
6913
6914 //----------------------------inline_reference_refersTo0----------------------------
6915 // bool java.lang.ref.Reference.refersTo0();
6916 // bool java.lang.ref.PhantomReference.refersTo0();
6917 bool LibraryCallKit::inline_reference_refersTo0(bool is_phantom) {
6918 // Get arguments:
6919 Node* reference_obj = null_check_receiver();
6920 Node* other_obj = argument(1);
6921 if (stopped()) return true;
6922
6923 DecoratorSet decorators = IN_HEAP | AS_NO_KEEPALIVE;
6924 decorators |= (is_phantom ? ON_PHANTOM_OOP_REF : ON_WEAK_OOP_REF);
6925 Node* referent = load_field_from_object(reference_obj, "referent", "Ljava/lang/Object;",
6926 decorators, /*is_static*/ false, nullptr);
6927 if (referent == nullptr) return false;
6928
6929 // Add memory barrier to prevent commoning reads from this field
6930 // across safepoint since GC can change its value.
6931 insert_mem_bar(Op_MemBarCPUOrder);
6932
6933 Node* cmp = _gvn.transform(new CmpPNode(referent, other_obj));
6934 Node* bol = _gvn.transform(new BoolNode(cmp, BoolTest::eq));
6935 IfNode* if_node = create_and_map_if(control(), bol, PROB_FAIR, COUNT_UNKNOWN);
6936
6937 RegionNode* region = new RegionNode(3);
6938 PhiNode* phi = new PhiNode(region, TypeInt::BOOL);
6939
6940 Node* if_true = _gvn.transform(new IfTrueNode(if_node));
6941 region->init_req(1, if_true);
6942 phi->init_req(1, intcon(1));
6943
6944 Node* if_false = _gvn.transform(new IfFalseNode(if_node));
6945 region->init_req(2, if_false);
6946 phi->init_req(2, intcon(0));
6947
6948 set_control(_gvn.transform(region));
6949 record_for_igvn(region);
6950 set_result(_gvn.transform(phi));
6951 return true;
6952 }
6953
6954 //----------------------------inline_reference_clear0----------------------------
6955 // void java.lang.ref.Reference.clear0();
6956 // void java.lang.ref.PhantomReference.clear0();
6957 bool LibraryCallKit::inline_reference_clear0(bool is_phantom) {
6958 // This matches the implementation in JVM_ReferenceClear, see the comments there.
6959
6960 // Get arguments
6961 Node* reference_obj = null_check_receiver();
6962 if (stopped()) return true;
6963
6964 // Common access parameters
6965 DecoratorSet decorators = IN_HEAP | AS_NO_KEEPALIVE;
6966 decorators |= (is_phantom ? ON_PHANTOM_OOP_REF : ON_WEAK_OOP_REF);
6967 Node* referent_field_addr = basic_plus_adr(reference_obj, java_lang_ref_Reference::referent_offset());
6968 const TypePtr* referent_field_addr_type = _gvn.type(referent_field_addr)->isa_ptr();
6969 const Type* val_type = TypeOopPtr::make_from_klass(env()->Object_klass());
6970
6971 Node* referent = access_load_at(reference_obj,
6972 referent_field_addr,
6973 referent_field_addr_type,
6974 val_type,
6975 T_OBJECT,
6976 decorators);
6977
6978 IdealKit ideal(this);
6979 #define __ ideal.
6980 __ if_then(referent, BoolTest::ne, null());
6981 sync_kit(ideal);
6982 access_store_at(reference_obj,
6983 referent_field_addr,
6984 referent_field_addr_type,
6985 null(),
6986 val_type,
6987 T_OBJECT,
6988 decorators);
6989 __ sync_kit(this);
6990 __ end_if();
6991 final_sync(ideal);
6992 #undef __
6993
6994 return true;
6995 }
6996
6997 Node* LibraryCallKit::load_field_from_object(Node* fromObj, const char* fieldName, const char* fieldTypeString,
6998 DecoratorSet decorators, bool is_static,
6999 ciInstanceKlass* fromKls) {
7000 if (fromKls == nullptr) {
7001 const TypeInstPtr* tinst = _gvn.type(fromObj)->isa_instptr();
7002 assert(tinst != nullptr, "obj is null");
7003 assert(tinst->is_loaded(), "obj is not loaded");
7004 fromKls = tinst->instance_klass();
7005 } else {
7006 assert(is_static, "only for static field access");
7007 }
7008 ciField* field = fromKls->get_field_by_name(ciSymbol::make(fieldName),
7009 ciSymbol::make(fieldTypeString),
7010 is_static);
7011
7012 assert(field != nullptr, "undefined field %s %s %s", fieldTypeString, fromKls->name()->as_utf8(), fieldName);
7013 if (field == nullptr) return (Node *) nullptr;
7014
7015 if (is_static) {
7016 const TypeInstPtr* tip = TypeInstPtr::make(fromKls->java_mirror());
7017 fromObj = makecon(tip);
7018 }
7019
7020 // Next code copied from Parse::do_get_xxx():
7021
7022 // Compute address and memory type.
7023 int offset = field->offset_in_bytes();
7024 bool is_vol = field->is_volatile();
7025 ciType* field_klass = field->type();
7026 assert(field_klass->is_loaded(), "should be loaded");
7027 const TypePtr* adr_type = C->alias_type(field)->adr_type();
7028 Node *adr = basic_plus_adr(fromObj, fromObj, offset);
7029 assert(C->get_alias_index(adr_type) == C->get_alias_index(_gvn.type(adr)->isa_ptr()),
7030 "slice of address and input slice don't match");
7031 BasicType bt = field->layout_type();
7032
7033 // Build the resultant type of the load
7034 const Type *type;
7035 if (bt == T_OBJECT) {
7036 type = TypeOopPtr::make_from_klass(field_klass->as_klass());
7037 } else {
7038 type = Type::get_const_basic_type(bt);
7039 }
7040
7041 if (is_vol) {
7042 decorators |= MO_SEQ_CST;
7043 }
7044
7045 return access_load_at(fromObj, adr, adr_type, type, bt, decorators);
7046 }
7047
7048 Node * LibraryCallKit::field_address_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString,
7049 bool is_exact /* true */, bool is_static /* false */,
7050 ciInstanceKlass * fromKls /* nullptr */) {
7051 if (fromKls == nullptr) {
7052 const TypeInstPtr* tinst = _gvn.type(fromObj)->isa_instptr();
7053 assert(tinst != nullptr, "obj is null");
7054 assert(tinst->is_loaded(), "obj is not loaded");
7055 assert(!is_exact || tinst->klass_is_exact(), "klass not exact");
7056 fromKls = tinst->instance_klass();
7057 }
7058 else {
7059 assert(is_static, "only for static field access");
7060 }
7061 ciField* field = fromKls->get_field_by_name(ciSymbol::make(fieldName),
7062 ciSymbol::make(fieldTypeString),
7063 is_static);
7064
7065 assert(field != nullptr, "undefined field");
7066 assert(!field->is_volatile(), "not defined for volatile fields");
7067
7068 if (is_static) {
7069 const TypeInstPtr* tip = TypeInstPtr::make(fromKls->java_mirror());
7070 fromObj = makecon(tip);
7071 }
7072
7073 // Next code copied from Parse::do_get_xxx():
7074
7075 // Compute address and memory type.
7076 int offset = field->offset_in_bytes();
7077 Node *adr = basic_plus_adr(fromObj, fromObj, offset);
7078
7079 return adr;
7080 }
7081
7082 //------------------------------inline_aescrypt_Block-----------------------
7083 bool LibraryCallKit::inline_aescrypt_Block(vmIntrinsics::ID id) {
7084 address stubAddr = nullptr;
7085 const char *stubName;
7086 assert(UseAES, "need AES instruction support");
7087
7088 switch(id) {
7089 case vmIntrinsics::_aescrypt_encryptBlock:
7090 stubAddr = StubRoutines::aescrypt_encryptBlock();
7091 stubName = "aescrypt_encryptBlock";
7092 break;
7093 case vmIntrinsics::_aescrypt_decryptBlock:
7094 stubAddr = StubRoutines::aescrypt_decryptBlock();
7095 stubName = "aescrypt_decryptBlock";
7096 break;
7097 default:
7098 break;
7099 }
7100 if (stubAddr == nullptr) return false;
7101
7102 Node* aescrypt_object = argument(0);
7103 Node* src = argument(1);
7104 Node* src_offset = argument(2);
7105 Node* dest = argument(3);
7106 Node* dest_offset = argument(4);
7107
7108 src = must_be_not_null(src, true);
7109 dest = must_be_not_null(dest, true);
7110
7111 // (1) src and dest are arrays.
7112 const TypeAryPtr* src_type = src->Value(&_gvn)->isa_aryptr();
7113 const TypeAryPtr* dest_type = dest->Value(&_gvn)->isa_aryptr();
7114 assert( src_type != nullptr && src_type->elem() != Type::BOTTOM &&
7115 dest_type != nullptr && dest_type->elem() != Type::BOTTOM, "args are strange");
7116
7117 // for the quick and dirty code we will skip all the checks.
7118 // we are just trying to get the call to be generated.
7119 Node* src_start = src;
7120 Node* dest_start = dest;
7121 if (src_offset != nullptr || dest_offset != nullptr) {
7122 assert(src_offset != nullptr && dest_offset != nullptr, "");
7123 src_start = array_element_address(src, src_offset, T_BYTE);
7124 dest_start = array_element_address(dest, dest_offset, T_BYTE);
7125 }
7126
7127 // now need to get the start of its expanded key array
7128 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java
7129 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object);
7130 if (k_start == nullptr) return false;
7131
7132 // Call the stub.
7133 make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::aescrypt_block_Type(),
7134 stubAddr, stubName, TypePtr::BOTTOM,
7135 src_start, dest_start, k_start);
7136
7137 return true;
7138 }
7139
7140 //------------------------------inline_cipherBlockChaining_AESCrypt-----------------------
7141 bool LibraryCallKit::inline_cipherBlockChaining_AESCrypt(vmIntrinsics::ID id) {
7142 address stubAddr = nullptr;
7143 const char *stubName = nullptr;
7144
7145 assert(UseAES, "need AES instruction support");
7146
7147 switch(id) {
7148 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt:
7149 stubAddr = StubRoutines::cipherBlockChaining_encryptAESCrypt();
7150 stubName = "cipherBlockChaining_encryptAESCrypt";
7151 break;
7152 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt:
7153 stubAddr = StubRoutines::cipherBlockChaining_decryptAESCrypt();
7154 stubName = "cipherBlockChaining_decryptAESCrypt";
7155 break;
7156 default:
7157 break;
7158 }
7159 if (stubAddr == nullptr) return false;
7160
7161 Node* cipherBlockChaining_object = argument(0);
7162 Node* src = argument(1);
7163 Node* src_offset = argument(2);
7164 Node* len = argument(3);
7165 Node* dest = argument(4);
7166 Node* dest_offset = argument(5);
7167
7168 src = must_be_not_null(src, false);
7169 dest = must_be_not_null(dest, false);
7170
7171 // (1) src and dest are arrays.
7172 const TypeAryPtr* src_type = src->Value(&_gvn)->isa_aryptr();
7173 const TypeAryPtr* dest_type = dest->Value(&_gvn)->isa_aryptr();
7174 assert( src_type != nullptr && src_type->elem() != Type::BOTTOM &&
7175 dest_type != nullptr && dest_type->elem() != Type::BOTTOM, "args are strange");
7176
7177 // checks are the responsibility of the caller
7178 Node* src_start = src;
7179 Node* dest_start = dest;
7180 if (src_offset != nullptr || dest_offset != nullptr) {
7181 assert(src_offset != nullptr && dest_offset != nullptr, "");
7182 src_start = array_element_address(src, src_offset, T_BYTE);
7183 dest_start = array_element_address(dest, dest_offset, T_BYTE);
7184 }
7185
7186 // if we are in this set of code, we "know" the embeddedCipher is an AESCrypt object
7187 // (because of the predicated logic executed earlier).
7188 // so we cast it here safely.
7189 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java
7190
7191 Node* embeddedCipherObj = load_field_from_object(cipherBlockChaining_object, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;");
7192 if (embeddedCipherObj == nullptr) return false;
7193
7194 // cast it to what we know it will be at runtime
7195 const TypeInstPtr* tinst = _gvn.type(cipherBlockChaining_object)->isa_instptr();
7196 assert(tinst != nullptr, "CBC obj is null");
7197 assert(tinst->is_loaded(), "CBC obj is not loaded");
7198 ciKlass* klass_AESCrypt = tinst->instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt"));
7199 assert(klass_AESCrypt->is_loaded(), "predicate checks that this class is loaded");
7200
7201 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass();
7202 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_AESCrypt);
7203 const TypeOopPtr* xtype = aklass->as_instance_type()->cast_to_ptr_type(TypePtr::NotNull);
7204 Node* aescrypt_object = new CheckCastPPNode(control(), embeddedCipherObj, xtype);
7205 aescrypt_object = _gvn.transform(aescrypt_object);
7206
7207 // we need to get the start of the aescrypt_object's expanded key array
7208 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object);
7209 if (k_start == nullptr) return false;
7210
7211 // similarly, get the start address of the r vector
7212 Node* objRvec = load_field_from_object(cipherBlockChaining_object, "r", "[B");
7213 if (objRvec == nullptr) return false;
7214 Node* r_start = array_element_address(objRvec, intcon(0), T_BYTE);
7215
7216 // Call the stub, passing src_start, dest_start, k_start, r_start and src_len
7217 Node* cbcCrypt = make_runtime_call(RC_LEAF|RC_NO_FP,
7218 OptoRuntime::cipherBlockChaining_aescrypt_Type(),
7219 stubAddr, stubName, TypePtr::BOTTOM,
7220 src_start, dest_start, k_start, r_start, len);
7221
7222 // return cipher length (int)
7223 Node* retvalue = _gvn.transform(new ProjNode(cbcCrypt, TypeFunc::Parms));
7224 set_result(retvalue);
7225 return true;
7226 }
7227
7228 //------------------------------inline_electronicCodeBook_AESCrypt-----------------------
7229 bool LibraryCallKit::inline_electronicCodeBook_AESCrypt(vmIntrinsics::ID id) {
7230 address stubAddr = nullptr;
7231 const char *stubName = nullptr;
7232
7233 assert(UseAES, "need AES instruction support");
7234
7235 switch (id) {
7236 case vmIntrinsics::_electronicCodeBook_encryptAESCrypt:
7237 stubAddr = StubRoutines::electronicCodeBook_encryptAESCrypt();
7238 stubName = "electronicCodeBook_encryptAESCrypt";
7239 break;
7240 case vmIntrinsics::_electronicCodeBook_decryptAESCrypt:
7241 stubAddr = StubRoutines::electronicCodeBook_decryptAESCrypt();
7242 stubName = "electronicCodeBook_decryptAESCrypt";
7243 break;
7244 default:
7245 break;
7246 }
7247
7248 if (stubAddr == nullptr) return false;
7249
7250 Node* electronicCodeBook_object = argument(0);
7251 Node* src = argument(1);
7252 Node* src_offset = argument(2);
7253 Node* len = argument(3);
7254 Node* dest = argument(4);
7255 Node* dest_offset = argument(5);
7256
7257 // (1) src and dest are arrays.
7258 const TypeAryPtr* src_type = src->Value(&_gvn)->isa_aryptr();
7259 const TypeAryPtr* dest_type = dest->Value(&_gvn)->isa_aryptr();
7260 assert( src_type != nullptr && src_type->elem() != Type::BOTTOM &&
7261 dest_type != nullptr && dest_type->elem() != Type::BOTTOM, "args are strange");
7262
7263 // checks are the responsibility of the caller
7264 Node* src_start = src;
7265 Node* dest_start = dest;
7266 if (src_offset != nullptr || dest_offset != nullptr) {
7267 assert(src_offset != nullptr && dest_offset != nullptr, "");
7268 src_start = array_element_address(src, src_offset, T_BYTE);
7269 dest_start = array_element_address(dest, dest_offset, T_BYTE);
7270 }
7271
7272 // if we are in this set of code, we "know" the embeddedCipher is an AESCrypt object
7273 // (because of the predicated logic executed earlier).
7274 // so we cast it here safely.
7275 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java
7276
7277 Node* embeddedCipherObj = load_field_from_object(electronicCodeBook_object, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;");
7278 if (embeddedCipherObj == nullptr) return false;
7279
7280 // cast it to what we know it will be at runtime
7281 const TypeInstPtr* tinst = _gvn.type(electronicCodeBook_object)->isa_instptr();
7282 assert(tinst != nullptr, "ECB obj is null");
7283 assert(tinst->is_loaded(), "ECB obj is not loaded");
7284 ciKlass* klass_AESCrypt = tinst->instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt"));
7285 assert(klass_AESCrypt->is_loaded(), "predicate checks that this class is loaded");
7286
7287 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass();
7288 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_AESCrypt);
7289 const TypeOopPtr* xtype = aklass->as_instance_type()->cast_to_ptr_type(TypePtr::NotNull);
7290 Node* aescrypt_object = new CheckCastPPNode(control(), embeddedCipherObj, xtype);
7291 aescrypt_object = _gvn.transform(aescrypt_object);
7292
7293 // we need to get the start of the aescrypt_object's expanded key array
7294 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object);
7295 if (k_start == nullptr) return false;
7296
7297 // Call the stub, passing src_start, dest_start, k_start, r_start and src_len
7298 Node* ecbCrypt = make_runtime_call(RC_LEAF | RC_NO_FP,
7299 OptoRuntime::electronicCodeBook_aescrypt_Type(),
7300 stubAddr, stubName, TypePtr::BOTTOM,
7301 src_start, dest_start, k_start, len);
7302
7303 // return cipher length (int)
7304 Node* retvalue = _gvn.transform(new ProjNode(ecbCrypt, TypeFunc::Parms));
7305 set_result(retvalue);
7306 return true;
7307 }
7308
7309 //------------------------------inline_counterMode_AESCrypt-----------------------
7310 bool LibraryCallKit::inline_counterMode_AESCrypt(vmIntrinsics::ID id) {
7311 assert(UseAES, "need AES instruction support");
7312 if (!UseAESCTRIntrinsics) return false;
7313
7314 address stubAddr = nullptr;
7315 const char *stubName = nullptr;
7316 if (id == vmIntrinsics::_counterMode_AESCrypt) {
7317 stubAddr = StubRoutines::counterMode_AESCrypt();
7318 stubName = "counterMode_AESCrypt";
7319 }
7320 if (stubAddr == nullptr) return false;
7321
7322 Node* counterMode_object = argument(0);
7323 Node* src = argument(1);
7324 Node* src_offset = argument(2);
7325 Node* len = argument(3);
7326 Node* dest = argument(4);
7327 Node* dest_offset = argument(5);
7328
7329 // (1) src and dest are arrays.
7330 const TypeAryPtr* src_type = src->Value(&_gvn)->isa_aryptr();
7331 const TypeAryPtr* dest_type = dest->Value(&_gvn)->isa_aryptr();
7332 assert( src_type != nullptr && src_type->elem() != Type::BOTTOM &&
7333 dest_type != nullptr && dest_type->elem() != Type::BOTTOM, "args are strange");
7334
7335 // checks are the responsibility of the caller
7336 Node* src_start = src;
7337 Node* dest_start = dest;
7338 if (src_offset != nullptr || dest_offset != nullptr) {
7339 assert(src_offset != nullptr && dest_offset != nullptr, "");
7340 src_start = array_element_address(src, src_offset, T_BYTE);
7341 dest_start = array_element_address(dest, dest_offset, T_BYTE);
7342 }
7343
7344 // if we are in this set of code, we "know" the embeddedCipher is an AESCrypt object
7345 // (because of the predicated logic executed earlier).
7346 // so we cast it here safely.
7347 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java
7348 Node* embeddedCipherObj = load_field_from_object(counterMode_object, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;");
7349 if (embeddedCipherObj == nullptr) return false;
7350 // cast it to what we know it will be at runtime
7351 const TypeInstPtr* tinst = _gvn.type(counterMode_object)->isa_instptr();
7352 assert(tinst != nullptr, "CTR obj is null");
7353 assert(tinst->is_loaded(), "CTR obj is not loaded");
7354 ciKlass* klass_AESCrypt = tinst->instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt"));
7355 assert(klass_AESCrypt->is_loaded(), "predicate checks that this class is loaded");
7356 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass();
7357 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_AESCrypt);
7358 const TypeOopPtr* xtype = aklass->as_instance_type()->cast_to_ptr_type(TypePtr::NotNull);
7359 Node* aescrypt_object = new CheckCastPPNode(control(), embeddedCipherObj, xtype);
7360 aescrypt_object = _gvn.transform(aescrypt_object);
7361 // we need to get the start of the aescrypt_object's expanded key array
7362 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object);
7363 if (k_start == nullptr) return false;
7364 // similarly, get the start address of the r vector
7365 Node* obj_counter = load_field_from_object(counterMode_object, "counter", "[B");
7366 if (obj_counter == nullptr) return false;
7367 Node* cnt_start = array_element_address(obj_counter, intcon(0), T_BYTE);
7368
7369 Node* saved_encCounter = load_field_from_object(counterMode_object, "encryptedCounter", "[B");
7370 if (saved_encCounter == nullptr) return false;
7371 Node* saved_encCounter_start = array_element_address(saved_encCounter, intcon(0), T_BYTE);
7372 Node* used = field_address_from_object(counterMode_object, "used", "I", /*is_exact*/ false);
7373
7374 // Call the stub, passing src_start, dest_start, k_start, r_start and src_len
7375 Node* ctrCrypt = make_runtime_call(RC_LEAF|RC_NO_FP,
7376 OptoRuntime::counterMode_aescrypt_Type(),
7377 stubAddr, stubName, TypePtr::BOTTOM,
7378 src_start, dest_start, k_start, cnt_start, len, saved_encCounter_start, used);
7379
7380 // return cipher length (int)
7381 Node* retvalue = _gvn.transform(new ProjNode(ctrCrypt, TypeFunc::Parms));
7382 set_result(retvalue);
7383 return true;
7384 }
7385
7386 //------------------------------get_key_start_from_aescrypt_object-----------------------
7387 Node * LibraryCallKit::get_key_start_from_aescrypt_object(Node *aescrypt_object) {
7388 #if defined(PPC64) || defined(S390) || defined(RISCV64)
7389 // MixColumns for decryption can be reduced by preprocessing MixColumns with round keys.
7390 // Intel's extension is based on this optimization and AESCrypt generates round keys by preprocessing MixColumns.
7391 // However, ppc64 vncipher processes MixColumns and requires the same round keys with encryption.
7392 // The ppc64 and riscv64 stubs of encryption and decryption use the same round keys (sessionK[0]).
7393 Node* objSessionK = load_field_from_object(aescrypt_object, "sessionK", "[[I");
7394 assert (objSessionK != nullptr, "wrong version of com.sun.crypto.provider.AESCrypt");
7395 if (objSessionK == nullptr) {
7396 return (Node *) nullptr;
7397 }
7398 Node* objAESCryptKey = load_array_element(objSessionK, intcon(0), TypeAryPtr::OOPS, /* set_ctrl */ true);
7399 #else
7400 Node* objAESCryptKey = load_field_from_object(aescrypt_object, "K", "[I");
7401 #endif // PPC64
7402 assert (objAESCryptKey != nullptr, "wrong version of com.sun.crypto.provider.AESCrypt");
7403 if (objAESCryptKey == nullptr) return (Node *) nullptr;
7404
7405 // now have the array, need to get the start address of the K array
7406 Node* k_start = array_element_address(objAESCryptKey, intcon(0), T_INT);
7407 return k_start;
7408 }
7409
7410 //----------------------------inline_cipherBlockChaining_AESCrypt_predicate----------------------------
7411 // Return node representing slow path of predicate check.
7412 // the pseudo code we want to emulate with this predicate is:
7413 // for encryption:
7414 // if (embeddedCipherObj instanceof AESCrypt) do_intrinsic, else do_javapath
7415 // for decryption:
7416 // if ((embeddedCipherObj instanceof AESCrypt) && (cipher!=plain)) do_intrinsic, else do_javapath
7417 // note cipher==plain is more conservative than the original java code but that's OK
7418 //
7419 Node* LibraryCallKit::inline_cipherBlockChaining_AESCrypt_predicate(bool decrypting) {
7420 // The receiver was checked for null already.
7421 Node* objCBC = argument(0);
7422
7423 Node* src = argument(1);
7424 Node* dest = argument(4);
7425
7426 // Load embeddedCipher field of CipherBlockChaining object.
7427 Node* embeddedCipherObj = load_field_from_object(objCBC, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;");
7428
7429 // get AESCrypt klass for instanceOf check
7430 // AESCrypt might not be loaded yet if some other SymmetricCipher got us to this compile point
7431 // will have same classloader as CipherBlockChaining object
7432 const TypeInstPtr* tinst = _gvn.type(objCBC)->isa_instptr();
7433 assert(tinst != nullptr, "CBCobj is null");
7434 assert(tinst->is_loaded(), "CBCobj is not loaded");
7435
7436 // we want to do an instanceof comparison against the AESCrypt class
7437 ciKlass* klass_AESCrypt = tinst->instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt"));
7438 if (!klass_AESCrypt->is_loaded()) {
7439 // if AESCrypt is not even loaded, we never take the intrinsic fast path
7440 Node* ctrl = control();
7441 set_control(top()); // no regular fast path
7442 return ctrl;
7443 }
7444
7445 src = must_be_not_null(src, true);
7446 dest = must_be_not_null(dest, true);
7447
7448 // Resolve oops to stable for CmpP below.
7449 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass();
7450
7451 Node* instof = gen_instanceof(embeddedCipherObj, makecon(TypeKlassPtr::make(instklass_AESCrypt)));
7452 Node* cmp_instof = _gvn.transform(new CmpINode(instof, intcon(1)));
7453 Node* bool_instof = _gvn.transform(new BoolNode(cmp_instof, BoolTest::ne));
7454
7455 Node* instof_false = generate_guard(bool_instof, nullptr, PROB_MIN);
7456
7457 // for encryption, we are done
7458 if (!decrypting)
7459 return instof_false; // even if it is null
7460
7461 // for decryption, we need to add a further check to avoid
7462 // taking the intrinsic path when cipher and plain are the same
7463 // see the original java code for why.
7464 RegionNode* region = new RegionNode(3);
7465 region->init_req(1, instof_false);
7466
7467 Node* cmp_src_dest = _gvn.transform(new CmpPNode(src, dest));
7468 Node* bool_src_dest = _gvn.transform(new BoolNode(cmp_src_dest, BoolTest::eq));
7469 Node* src_dest_conjoint = generate_guard(bool_src_dest, nullptr, PROB_MIN);
7470 region->init_req(2, src_dest_conjoint);
7471
7472 record_for_igvn(region);
7473 return _gvn.transform(region);
7474 }
7475
7476 //----------------------------inline_electronicCodeBook_AESCrypt_predicate----------------------------
7477 // Return node representing slow path of predicate check.
7478 // the pseudo code we want to emulate with this predicate is:
7479 // for encryption:
7480 // if (embeddedCipherObj instanceof AESCrypt) do_intrinsic, else do_javapath
7481 // for decryption:
7482 // if ((embeddedCipherObj instanceof AESCrypt) && (cipher!=plain)) do_intrinsic, else do_javapath
7483 // note cipher==plain is more conservative than the original java code but that's OK
7484 //
7485 Node* LibraryCallKit::inline_electronicCodeBook_AESCrypt_predicate(bool decrypting) {
7486 // The receiver was checked for null already.
7487 Node* objECB = argument(0);
7488
7489 // Load embeddedCipher field of ElectronicCodeBook object.
7490 Node* embeddedCipherObj = load_field_from_object(objECB, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;");
7491
7492 // get AESCrypt klass for instanceOf check
7493 // AESCrypt might not be loaded yet if some other SymmetricCipher got us to this compile point
7494 // will have same classloader as ElectronicCodeBook object
7495 const TypeInstPtr* tinst = _gvn.type(objECB)->isa_instptr();
7496 assert(tinst != nullptr, "ECBobj is null");
7497 assert(tinst->is_loaded(), "ECBobj is not loaded");
7498
7499 // we want to do an instanceof comparison against the AESCrypt class
7500 ciKlass* klass_AESCrypt = tinst->instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt"));
7501 if (!klass_AESCrypt->is_loaded()) {
7502 // if AESCrypt is not even loaded, we never take the intrinsic fast path
7503 Node* ctrl = control();
7504 set_control(top()); // no regular fast path
7505 return ctrl;
7506 }
7507 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass();
7508
7509 Node* instof = gen_instanceof(embeddedCipherObj, makecon(TypeKlassPtr::make(instklass_AESCrypt)));
7510 Node* cmp_instof = _gvn.transform(new CmpINode(instof, intcon(1)));
7511 Node* bool_instof = _gvn.transform(new BoolNode(cmp_instof, BoolTest::ne));
7512
7513 Node* instof_false = generate_guard(bool_instof, nullptr, PROB_MIN);
7514
7515 // for encryption, we are done
7516 if (!decrypting)
7517 return instof_false; // even if it is null
7518
7519 // for decryption, we need to add a further check to avoid
7520 // taking the intrinsic path when cipher and plain are the same
7521 // see the original java code for why.
7522 RegionNode* region = new RegionNode(3);
7523 region->init_req(1, instof_false);
7524 Node* src = argument(1);
7525 Node* dest = argument(4);
7526 Node* cmp_src_dest = _gvn.transform(new CmpPNode(src, dest));
7527 Node* bool_src_dest = _gvn.transform(new BoolNode(cmp_src_dest, BoolTest::eq));
7528 Node* src_dest_conjoint = generate_guard(bool_src_dest, nullptr, PROB_MIN);
7529 region->init_req(2, src_dest_conjoint);
7530
7531 record_for_igvn(region);
7532 return _gvn.transform(region);
7533 }
7534
7535 //----------------------------inline_counterMode_AESCrypt_predicate----------------------------
7536 // Return node representing slow path of predicate check.
7537 // the pseudo code we want to emulate with this predicate is:
7538 // for encryption:
7539 // if (embeddedCipherObj instanceof AESCrypt) do_intrinsic, else do_javapath
7540 // for decryption:
7541 // if ((embeddedCipherObj instanceof AESCrypt) && (cipher!=plain)) do_intrinsic, else do_javapath
7542 // note cipher==plain is more conservative than the original java code but that's OK
7543 //
7544
7545 Node* LibraryCallKit::inline_counterMode_AESCrypt_predicate() {
7546 // The receiver was checked for null already.
7547 Node* objCTR = argument(0);
7548
7549 // Load embeddedCipher field of CipherBlockChaining object.
7550 Node* embeddedCipherObj = load_field_from_object(objCTR, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;");
7551
7552 // get AESCrypt klass for instanceOf check
7553 // AESCrypt might not be loaded yet if some other SymmetricCipher got us to this compile point
7554 // will have same classloader as CipherBlockChaining object
7555 const TypeInstPtr* tinst = _gvn.type(objCTR)->isa_instptr();
7556 assert(tinst != nullptr, "CTRobj is null");
7557 assert(tinst->is_loaded(), "CTRobj is not loaded");
7558
7559 // we want to do an instanceof comparison against the AESCrypt class
7560 ciKlass* klass_AESCrypt = tinst->instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt"));
7561 if (!klass_AESCrypt->is_loaded()) {
7562 // if AESCrypt is not even loaded, we never take the intrinsic fast path
7563 Node* ctrl = control();
7564 set_control(top()); // no regular fast path
7565 return ctrl;
7566 }
7567
7568 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass();
7569 Node* instof = gen_instanceof(embeddedCipherObj, makecon(TypeKlassPtr::make(instklass_AESCrypt)));
7570 Node* cmp_instof = _gvn.transform(new CmpINode(instof, intcon(1)));
7571 Node* bool_instof = _gvn.transform(new BoolNode(cmp_instof, BoolTest::ne));
7572 Node* instof_false = generate_guard(bool_instof, nullptr, PROB_MIN);
7573
7574 return instof_false; // even if it is null
7575 }
7576
7577 //------------------------------inline_ghash_processBlocks
7578 bool LibraryCallKit::inline_ghash_processBlocks() {
7579 address stubAddr;
7580 const char *stubName;
7581 assert(UseGHASHIntrinsics, "need GHASH intrinsics support");
7582
7583 stubAddr = StubRoutines::ghash_processBlocks();
7584 stubName = "ghash_processBlocks";
7585
7586 Node* data = argument(0);
7587 Node* offset = argument(1);
7588 Node* len = argument(2);
7589 Node* state = argument(3);
7590 Node* subkeyH = argument(4);
7591
7592 state = must_be_not_null(state, true);
7593 subkeyH = must_be_not_null(subkeyH, true);
7594 data = must_be_not_null(data, true);
7595
7596 Node* state_start = array_element_address(state, intcon(0), T_LONG);
7597 assert(state_start, "state is null");
7598 Node* subkeyH_start = array_element_address(subkeyH, intcon(0), T_LONG);
7599 assert(subkeyH_start, "subkeyH is null");
7600 Node* data_start = array_element_address(data, offset, T_BYTE);
7601 assert(data_start, "data is null");
7602
7603 Node* ghash = make_runtime_call(RC_LEAF|RC_NO_FP,
7604 OptoRuntime::ghash_processBlocks_Type(),
7605 stubAddr, stubName, TypePtr::BOTTOM,
7606 state_start, subkeyH_start, data_start, len);
7607 return true;
7608 }
7609
7610 //------------------------------inline_chacha20Block
7611 bool LibraryCallKit::inline_chacha20Block() {
7612 address stubAddr;
7613 const char *stubName;
7614 assert(UseChaCha20Intrinsics, "need ChaCha20 intrinsics support");
7615
7616 stubAddr = StubRoutines::chacha20Block();
7617 stubName = "chacha20Block";
7618
7619 Node* state = argument(0);
7620 Node* result = argument(1);
7621
7622 state = must_be_not_null(state, true);
7623 result = must_be_not_null(result, true);
7624
7625 Node* state_start = array_element_address(state, intcon(0), T_INT);
7626 assert(state_start, "state is null");
7627 Node* result_start = array_element_address(result, intcon(0), T_BYTE);
7628 assert(result_start, "result is null");
7629
7630 Node* cc20Blk = make_runtime_call(RC_LEAF|RC_NO_FP,
7631 OptoRuntime::chacha20Block_Type(),
7632 stubAddr, stubName, TypePtr::BOTTOM,
7633 state_start, result_start);
7634 // return key stream length (int)
7635 Node* retvalue = _gvn.transform(new ProjNode(cc20Blk, TypeFunc::Parms));
7636 set_result(retvalue);
7637 return true;
7638 }
7639
7640 //------------------------------inline_dilithiumAlmostNtt
7641 bool LibraryCallKit::inline_dilithiumAlmostNtt() {
7642 address stubAddr;
7643 const char *stubName;
7644 assert(UseDilithiumIntrinsics, "need Dilithium intrinsics support");
7645 assert(callee()->signature()->size() == 2, "dilithiumAlmostNtt has 2 parameters");
7646
7647 stubAddr = StubRoutines::dilithiumAlmostNtt();
7648 stubName = "dilithiumAlmostNtt";
7649 if (!stubAddr) return false;
7650
7651 Node* coeffs = argument(0);
7652 Node* ntt_zetas = argument(1);
7653
7654 coeffs = must_be_not_null(coeffs, true);
7655 ntt_zetas = must_be_not_null(ntt_zetas, true);
7656
7657 Node* coeffs_start = array_element_address(coeffs, intcon(0), T_INT);
7658 assert(coeffs_start, "coeffs is null");
7659 Node* ntt_zetas_start = array_element_address(ntt_zetas, intcon(0), T_INT);
7660 assert(ntt_zetas_start, "ntt_zetas is null");
7661 Node* dilithiumAlmostNtt = make_runtime_call(RC_LEAF|RC_NO_FP,
7662 OptoRuntime::dilithiumAlmostNtt_Type(),
7663 stubAddr, stubName, TypePtr::BOTTOM,
7664 coeffs_start, ntt_zetas_start);
7665 // return an int
7666 Node* retvalue = _gvn.transform(new ProjNode(dilithiumAlmostNtt, TypeFunc::Parms));
7667 set_result(retvalue);
7668 return true;
7669 }
7670
7671 //------------------------------inline_dilithiumAlmostInverseNtt
7672 bool LibraryCallKit::inline_dilithiumAlmostInverseNtt() {
7673 address stubAddr;
7674 const char *stubName;
7675 assert(UseDilithiumIntrinsics, "need Dilithium intrinsics support");
7676 assert(callee()->signature()->size() == 2, "dilithiumAlmostInverseNtt has 2 parameters");
7677
7678 stubAddr = StubRoutines::dilithiumAlmostInverseNtt();
7679 stubName = "dilithiumAlmostInverseNtt";
7680 if (!stubAddr) return false;
7681
7682 Node* coeffs = argument(0);
7683 Node* zetas = argument(1);
7684
7685 coeffs = must_be_not_null(coeffs, true);
7686 zetas = must_be_not_null(zetas, true);
7687
7688 Node* coeffs_start = array_element_address(coeffs, intcon(0), T_INT);
7689 assert(coeffs_start, "coeffs is null");
7690 Node* zetas_start = array_element_address(zetas, intcon(0), T_INT);
7691 assert(zetas_start, "inverseNtt_zetas is null");
7692 Node* dilithiumAlmostInverseNtt = make_runtime_call(RC_LEAF|RC_NO_FP,
7693 OptoRuntime::dilithiumAlmostInverseNtt_Type(),
7694 stubAddr, stubName, TypePtr::BOTTOM,
7695 coeffs_start, zetas_start);
7696
7697 // return an int
7698 Node* retvalue = _gvn.transform(new ProjNode(dilithiumAlmostInverseNtt, TypeFunc::Parms));
7699 set_result(retvalue);
7700 return true;
7701 }
7702
7703 //------------------------------inline_dilithiumNttMult
7704 bool LibraryCallKit::inline_dilithiumNttMult() {
7705 address stubAddr;
7706 const char *stubName;
7707 assert(UseDilithiumIntrinsics, "need Dilithium intrinsics support");
7708 assert(callee()->signature()->size() == 3, "dilithiumNttMult has 3 parameters");
7709
7710 stubAddr = StubRoutines::dilithiumNttMult();
7711 stubName = "dilithiumNttMult";
7712 if (!stubAddr) return false;
7713
7714 Node* result = argument(0);
7715 Node* ntta = argument(1);
7716 Node* nttb = argument(2);
7717
7718 result = must_be_not_null(result, true);
7719 ntta = must_be_not_null(ntta, true);
7720 nttb = must_be_not_null(nttb, true);
7721
7722 Node* result_start = array_element_address(result, intcon(0), T_INT);
7723 assert(result_start, "result is null");
7724 Node* ntta_start = array_element_address(ntta, intcon(0), T_INT);
7725 assert(ntta_start, "ntta is null");
7726 Node* nttb_start = array_element_address(nttb, intcon(0), T_INT);
7727 assert(nttb_start, "nttb is null");
7728 Node* dilithiumNttMult = make_runtime_call(RC_LEAF|RC_NO_FP,
7729 OptoRuntime::dilithiumNttMult_Type(),
7730 stubAddr, stubName, TypePtr::BOTTOM,
7731 result_start, ntta_start, nttb_start);
7732
7733 // return an int
7734 Node* retvalue = _gvn.transform(new ProjNode(dilithiumNttMult, TypeFunc::Parms));
7735 set_result(retvalue);
7736
7737 return true;
7738 }
7739
7740 //------------------------------inline_dilithiumMontMulByConstant
7741 bool LibraryCallKit::inline_dilithiumMontMulByConstant() {
7742 address stubAddr;
7743 const char *stubName;
7744 assert(UseDilithiumIntrinsics, "need Dilithium intrinsics support");
7745 assert(callee()->signature()->size() == 2, "dilithiumMontMulByConstant has 2 parameters");
7746
7747 stubAddr = StubRoutines::dilithiumMontMulByConstant();
7748 stubName = "dilithiumMontMulByConstant";
7749 if (!stubAddr) return false;
7750
7751 Node* coeffs = argument(0);
7752 Node* constant = argument(1);
7753
7754 coeffs = must_be_not_null(coeffs, true);
7755
7756 Node* coeffs_start = array_element_address(coeffs, intcon(0), T_INT);
7757 assert(coeffs_start, "coeffs is null");
7758 Node* dilithiumMontMulByConstant = make_runtime_call(RC_LEAF|RC_NO_FP,
7759 OptoRuntime::dilithiumMontMulByConstant_Type(),
7760 stubAddr, stubName, TypePtr::BOTTOM,
7761 coeffs_start, constant);
7762
7763 // return an int
7764 Node* retvalue = _gvn.transform(new ProjNode(dilithiumMontMulByConstant, TypeFunc::Parms));
7765 set_result(retvalue);
7766 return true;
7767 }
7768
7769
7770 //------------------------------inline_dilithiumDecomposePoly
7771 bool LibraryCallKit::inline_dilithiumDecomposePoly() {
7772 address stubAddr;
7773 const char *stubName;
7774 assert(UseDilithiumIntrinsics, "need Dilithium intrinsics support");
7775 assert(callee()->signature()->size() == 5, "dilithiumDecomposePoly has 5 parameters");
7776
7777 stubAddr = StubRoutines::dilithiumDecomposePoly();
7778 stubName = "dilithiumDecomposePoly";
7779 if (!stubAddr) return false;
7780
7781 Node* input = argument(0);
7782 Node* lowPart = argument(1);
7783 Node* highPart = argument(2);
7784 Node* twoGamma2 = argument(3);
7785 Node* multiplier = argument(4);
7786
7787 input = must_be_not_null(input, true);
7788 lowPart = must_be_not_null(lowPart, true);
7789 highPart = must_be_not_null(highPart, true);
7790
7791 Node* input_start = array_element_address(input, intcon(0), T_INT);
7792 assert(input_start, "input is null");
7793 Node* lowPart_start = array_element_address(lowPart, intcon(0), T_INT);
7794 assert(lowPart_start, "lowPart is null");
7795 Node* highPart_start = array_element_address(highPart, intcon(0), T_INT);
7796 assert(highPart_start, "highPart is null");
7797
7798 Node* dilithiumDecomposePoly = make_runtime_call(RC_LEAF|RC_NO_FP,
7799 OptoRuntime::dilithiumDecomposePoly_Type(),
7800 stubAddr, stubName, TypePtr::BOTTOM,
7801 input_start, lowPart_start, highPart_start,
7802 twoGamma2, multiplier);
7803
7804 // return an int
7805 Node* retvalue = _gvn.transform(new ProjNode(dilithiumDecomposePoly, TypeFunc::Parms));
7806 set_result(retvalue);
7807 return true;
7808 }
7809
7810 bool LibraryCallKit::inline_base64_encodeBlock() {
7811 address stubAddr;
7812 const char *stubName;
7813 assert(UseBASE64Intrinsics, "need Base64 intrinsics support");
7814 assert(callee()->signature()->size() == 6, "base64_encodeBlock has 6 parameters");
7815 stubAddr = StubRoutines::base64_encodeBlock();
7816 stubName = "encodeBlock";
7817
7818 if (!stubAddr) return false;
7819 Node* base64obj = argument(0);
7820 Node* src = argument(1);
7821 Node* offset = argument(2);
7822 Node* len = argument(3);
7823 Node* dest = argument(4);
7824 Node* dp = argument(5);
7825 Node* isURL = argument(6);
7826
7827 src = must_be_not_null(src, true);
7828 dest = must_be_not_null(dest, true);
7829
7830 Node* src_start = array_element_address(src, intcon(0), T_BYTE);
7831 assert(src_start, "source array is null");
7832 Node* dest_start = array_element_address(dest, intcon(0), T_BYTE);
7833 assert(dest_start, "destination array is null");
7834
7835 Node* base64 = make_runtime_call(RC_LEAF,
7836 OptoRuntime::base64_encodeBlock_Type(),
7837 stubAddr, stubName, TypePtr::BOTTOM,
7838 src_start, offset, len, dest_start, dp, isURL);
7839 return true;
7840 }
7841
7842 bool LibraryCallKit::inline_base64_decodeBlock() {
7843 address stubAddr;
7844 const char *stubName;
7845 assert(UseBASE64Intrinsics, "need Base64 intrinsics support");
7846 assert(callee()->signature()->size() == 7, "base64_decodeBlock has 7 parameters");
7847 stubAddr = StubRoutines::base64_decodeBlock();
7848 stubName = "decodeBlock";
7849
7850 if (!stubAddr) return false;
7851 Node* base64obj = argument(0);
7852 Node* src = argument(1);
7853 Node* src_offset = argument(2);
7854 Node* len = argument(3);
7855 Node* dest = argument(4);
7856 Node* dest_offset = argument(5);
7857 Node* isURL = argument(6);
7858 Node* isMIME = argument(7);
7859
7860 src = must_be_not_null(src, true);
7861 dest = must_be_not_null(dest, true);
7862
7863 Node* src_start = array_element_address(src, intcon(0), T_BYTE);
7864 assert(src_start, "source array is null");
7865 Node* dest_start = array_element_address(dest, intcon(0), T_BYTE);
7866 assert(dest_start, "destination array is null");
7867
7868 Node* call = make_runtime_call(RC_LEAF,
7869 OptoRuntime::base64_decodeBlock_Type(),
7870 stubAddr, stubName, TypePtr::BOTTOM,
7871 src_start, src_offset, len, dest_start, dest_offset, isURL, isMIME);
7872 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms));
7873 set_result(result);
7874 return true;
7875 }
7876
7877 bool LibraryCallKit::inline_poly1305_processBlocks() {
7878 address stubAddr;
7879 const char *stubName;
7880 assert(UsePoly1305Intrinsics, "need Poly intrinsics support");
7881 assert(callee()->signature()->size() == 5, "poly1305_processBlocks has %d parameters", callee()->signature()->size());
7882 stubAddr = StubRoutines::poly1305_processBlocks();
7883 stubName = "poly1305_processBlocks";
7884
7885 if (!stubAddr) return false;
7886 null_check_receiver(); // null-check receiver
7887 if (stopped()) return true;
7888
7889 Node* input = argument(1);
7890 Node* input_offset = argument(2);
7891 Node* len = argument(3);
7892 Node* alimbs = argument(4);
7893 Node* rlimbs = argument(5);
7894
7895 input = must_be_not_null(input, true);
7896 alimbs = must_be_not_null(alimbs, true);
7897 rlimbs = must_be_not_null(rlimbs, true);
7898
7899 Node* input_start = array_element_address(input, input_offset, T_BYTE);
7900 assert(input_start, "input array is null");
7901 Node* acc_start = array_element_address(alimbs, intcon(0), T_LONG);
7902 assert(acc_start, "acc array is null");
7903 Node* r_start = array_element_address(rlimbs, intcon(0), T_LONG);
7904 assert(r_start, "r array is null");
7905
7906 Node* call = make_runtime_call(RC_LEAF | RC_NO_FP,
7907 OptoRuntime::poly1305_processBlocks_Type(),
7908 stubAddr, stubName, TypePtr::BOTTOM,
7909 input_start, len, acc_start, r_start);
7910 return true;
7911 }
7912
7913 bool LibraryCallKit::inline_intpoly_montgomeryMult_P256() {
7914 address stubAddr;
7915 const char *stubName;
7916 assert(UseIntPolyIntrinsics, "need intpoly intrinsics support");
7917 assert(callee()->signature()->size() == 3, "intpoly_montgomeryMult_P256 has %d parameters", callee()->signature()->size());
7918 stubAddr = StubRoutines::intpoly_montgomeryMult_P256();
7919 stubName = "intpoly_montgomeryMult_P256";
7920
7921 if (!stubAddr) return false;
7922 null_check_receiver(); // null-check receiver
7923 if (stopped()) return true;
7924
7925 Node* a = argument(1);
7926 Node* b = argument(2);
7927 Node* r = argument(3);
7928
7929 a = must_be_not_null(a, true);
7930 b = must_be_not_null(b, true);
7931 r = must_be_not_null(r, true);
7932
7933 Node* a_start = array_element_address(a, intcon(0), T_LONG);
7934 assert(a_start, "a array is null");
7935 Node* b_start = array_element_address(b, intcon(0), T_LONG);
7936 assert(b_start, "b array is null");
7937 Node* r_start = array_element_address(r, intcon(0), T_LONG);
7938 assert(r_start, "r array is null");
7939
7940 Node* call = make_runtime_call(RC_LEAF | RC_NO_FP,
7941 OptoRuntime::intpoly_montgomeryMult_P256_Type(),
7942 stubAddr, stubName, TypePtr::BOTTOM,
7943 a_start, b_start, r_start);
7944 return true;
7945 }
7946
7947 bool LibraryCallKit::inline_intpoly_assign() {
7948 assert(UseIntPolyIntrinsics, "need intpoly intrinsics support");
7949 assert(callee()->signature()->size() == 3, "intpoly_assign has %d parameters", callee()->signature()->size());
7950 const char *stubName = "intpoly_assign";
7951 address stubAddr = StubRoutines::intpoly_assign();
7952 if (!stubAddr) return false;
7953
7954 Node* set = argument(0);
7955 Node* a = argument(1);
7956 Node* b = argument(2);
7957 Node* arr_length = load_array_length(a);
7958
7959 a = must_be_not_null(a, true);
7960 b = must_be_not_null(b, true);
7961
7962 Node* a_start = array_element_address(a, intcon(0), T_LONG);
7963 assert(a_start, "a array is null");
7964 Node* b_start = array_element_address(b, intcon(0), T_LONG);
7965 assert(b_start, "b array is null");
7966
7967 Node* call = make_runtime_call(RC_LEAF | RC_NO_FP,
7968 OptoRuntime::intpoly_assign_Type(),
7969 stubAddr, stubName, TypePtr::BOTTOM,
7970 set, a_start, b_start, arr_length);
7971 return true;
7972 }
7973
7974 //------------------------------inline_digestBase_implCompress-----------------------
7975 //
7976 // Calculate MD5 for single-block byte[] array.
7977 // void com.sun.security.provider.MD5.implCompress(byte[] buf, int ofs)
7978 //
7979 // Calculate SHA (i.e., SHA-1) for single-block byte[] array.
7980 // void com.sun.security.provider.SHA.implCompress(byte[] buf, int ofs)
7981 //
7982 // Calculate SHA2 (i.e., SHA-244 or SHA-256) for single-block byte[] array.
7983 // void com.sun.security.provider.SHA2.implCompress(byte[] buf, int ofs)
7984 //
7985 // Calculate SHA5 (i.e., SHA-384 or SHA-512) for single-block byte[] array.
7986 // void com.sun.security.provider.SHA5.implCompress(byte[] buf, int ofs)
7987 //
7988 // Calculate SHA3 (i.e., SHA3-224 or SHA3-256 or SHA3-384 or SHA3-512) for single-block byte[] array.
7989 // void com.sun.security.provider.SHA3.implCompress(byte[] buf, int ofs)
7990 //
7991 bool LibraryCallKit::inline_digestBase_implCompress(vmIntrinsics::ID id) {
7992 assert(callee()->signature()->size() == 2, "sha_implCompress has 2 parameters");
7993
7994 Node* digestBase_obj = argument(0);
7995 Node* src = argument(1); // type oop
7996 Node* ofs = argument(2); // type int
7997
7998 const TypeAryPtr* src_type = src->Value(&_gvn)->isa_aryptr();
7999 if (src_type == nullptr || src_type->elem() == Type::BOTTOM) {
8000 // failed array check
8001 return false;
8002 }
8003 // Figure out the size and type of the elements we will be copying.
8004 BasicType src_elem = src_type->elem()->array_element_basic_type();
8005 if (src_elem != T_BYTE) {
8006 return false;
8007 }
8008 // 'src_start' points to src array + offset
8009 src = must_be_not_null(src, true);
8010 Node* src_start = array_element_address(src, ofs, src_elem);
8011 Node* state = nullptr;
8012 Node* block_size = nullptr;
8013 address stubAddr;
8014 const char *stubName;
8015
8016 switch(id) {
8017 case vmIntrinsics::_md5_implCompress:
8018 assert(UseMD5Intrinsics, "need MD5 instruction support");
8019 state = get_state_from_digest_object(digestBase_obj, T_INT);
8020 stubAddr = StubRoutines::md5_implCompress();
8021 stubName = "md5_implCompress";
8022 break;
8023 case vmIntrinsics::_sha_implCompress:
8024 assert(UseSHA1Intrinsics, "need SHA1 instruction support");
8025 state = get_state_from_digest_object(digestBase_obj, T_INT);
8026 stubAddr = StubRoutines::sha1_implCompress();
8027 stubName = "sha1_implCompress";
8028 break;
8029 case vmIntrinsics::_sha2_implCompress:
8030 assert(UseSHA256Intrinsics, "need SHA256 instruction support");
8031 state = get_state_from_digest_object(digestBase_obj, T_INT);
8032 stubAddr = StubRoutines::sha256_implCompress();
8033 stubName = "sha256_implCompress";
8034 break;
8035 case vmIntrinsics::_sha5_implCompress:
8036 assert(UseSHA512Intrinsics, "need SHA512 instruction support");
8037 state = get_state_from_digest_object(digestBase_obj, T_LONG);
8038 stubAddr = StubRoutines::sha512_implCompress();
8039 stubName = "sha512_implCompress";
8040 break;
8041 case vmIntrinsics::_sha3_implCompress:
8042 assert(UseSHA3Intrinsics, "need SHA3 instruction support");
8043 state = get_state_from_digest_object(digestBase_obj, T_LONG);
8044 stubAddr = StubRoutines::sha3_implCompress();
8045 stubName = "sha3_implCompress";
8046 block_size = get_block_size_from_digest_object(digestBase_obj);
8047 if (block_size == nullptr) return false;
8048 break;
8049 default:
8050 fatal_unexpected_iid(id);
8051 return false;
8052 }
8053 if (state == nullptr) return false;
8054
8055 assert(stubAddr != nullptr, "Stub %s is not generated", stubName);
8056 if (stubAddr == nullptr) return false;
8057
8058 // Call the stub.
8059 Node* call;
8060 if (block_size == nullptr) {
8061 call = make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::digestBase_implCompress_Type(false),
8062 stubAddr, stubName, TypePtr::BOTTOM,
8063 src_start, state);
8064 } else {
8065 call = make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::digestBase_implCompress_Type(true),
8066 stubAddr, stubName, TypePtr::BOTTOM,
8067 src_start, state, block_size);
8068 }
8069
8070 return true;
8071 }
8072
8073 //------------------------------inline_double_keccak
8074 bool LibraryCallKit::inline_double_keccak() {
8075 address stubAddr;
8076 const char *stubName;
8077 assert(UseSHA3Intrinsics, "need SHA3 intrinsics support");
8078 assert(callee()->signature()->size() == 2, "double_keccak has 2 parameters");
8079
8080 stubAddr = StubRoutines::double_keccak();
8081 stubName = "double_keccak";
8082 if (!stubAddr) return false;
8083
8084 Node* status0 = argument(0);
8085 Node* status1 = argument(1);
8086
8087 status0 = must_be_not_null(status0, true);
8088 status1 = must_be_not_null(status1, true);
8089
8090 Node* status0_start = array_element_address(status0, intcon(0), T_LONG);
8091 assert(status0_start, "status0 is null");
8092 Node* status1_start = array_element_address(status1, intcon(0), T_LONG);
8093 assert(status1_start, "status1 is null");
8094 Node* double_keccak = make_runtime_call(RC_LEAF|RC_NO_FP,
8095 OptoRuntime::double_keccak_Type(),
8096 stubAddr, stubName, TypePtr::BOTTOM,
8097 status0_start, status1_start);
8098 // return an int
8099 Node* retvalue = _gvn.transform(new ProjNode(double_keccak, TypeFunc::Parms));
8100 set_result(retvalue);
8101 return true;
8102 }
8103
8104
8105 //------------------------------inline_digestBase_implCompressMB-----------------------
8106 //
8107 // Calculate MD5/SHA/SHA2/SHA5/SHA3 for multi-block byte[] array.
8108 // int com.sun.security.provider.DigestBase.implCompressMultiBlock(byte[] b, int ofs, int limit)
8109 //
8110 bool LibraryCallKit::inline_digestBase_implCompressMB(int predicate) {
8111 assert(UseMD5Intrinsics || UseSHA1Intrinsics || UseSHA256Intrinsics || UseSHA512Intrinsics || UseSHA3Intrinsics,
8112 "need MD5/SHA1/SHA256/SHA512/SHA3 instruction support");
8113 assert((uint)predicate < 5, "sanity");
8114 assert(callee()->signature()->size() == 3, "digestBase_implCompressMB has 3 parameters");
8115
8116 Node* digestBase_obj = argument(0); // The receiver was checked for null already.
8117 Node* src = argument(1); // byte[] array
8118 Node* ofs = argument(2); // type int
8119 Node* limit = argument(3); // type int
8120
8121 const TypeAryPtr* src_type = src->Value(&_gvn)->isa_aryptr();
8122 if (src_type == nullptr || src_type->elem() == Type::BOTTOM) {
8123 // failed array check
8124 return false;
8125 }
8126 // Figure out the size and type of the elements we will be copying.
8127 BasicType src_elem = src_type->elem()->array_element_basic_type();
8128 if (src_elem != T_BYTE) {
8129 return false;
8130 }
8131 // 'src_start' points to src array + offset
8132 src = must_be_not_null(src, false);
8133 Node* src_start = array_element_address(src, ofs, src_elem);
8134
8135 const char* klass_digestBase_name = nullptr;
8136 const char* stub_name = nullptr;
8137 address stub_addr = nullptr;
8138 BasicType elem_type = T_INT;
8139
8140 switch (predicate) {
8141 case 0:
8142 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_md5_implCompress)) {
8143 klass_digestBase_name = "sun/security/provider/MD5";
8144 stub_name = "md5_implCompressMB";
8145 stub_addr = StubRoutines::md5_implCompressMB();
8146 }
8147 break;
8148 case 1:
8149 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_sha_implCompress)) {
8150 klass_digestBase_name = "sun/security/provider/SHA";
8151 stub_name = "sha1_implCompressMB";
8152 stub_addr = StubRoutines::sha1_implCompressMB();
8153 }
8154 break;
8155 case 2:
8156 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_sha2_implCompress)) {
8157 klass_digestBase_name = "sun/security/provider/SHA2";
8158 stub_name = "sha256_implCompressMB";
8159 stub_addr = StubRoutines::sha256_implCompressMB();
8160 }
8161 break;
8162 case 3:
8163 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_sha5_implCompress)) {
8164 klass_digestBase_name = "sun/security/provider/SHA5";
8165 stub_name = "sha512_implCompressMB";
8166 stub_addr = StubRoutines::sha512_implCompressMB();
8167 elem_type = T_LONG;
8168 }
8169 break;
8170 case 4:
8171 if (vmIntrinsics::is_intrinsic_available(vmIntrinsics::_sha3_implCompress)) {
8172 klass_digestBase_name = "sun/security/provider/SHA3";
8173 stub_name = "sha3_implCompressMB";
8174 stub_addr = StubRoutines::sha3_implCompressMB();
8175 elem_type = T_LONG;
8176 }
8177 break;
8178 default:
8179 fatal("unknown DigestBase intrinsic predicate: %d", predicate);
8180 }
8181 if (klass_digestBase_name != nullptr) {
8182 assert(stub_addr != nullptr, "Stub is generated");
8183 if (stub_addr == nullptr) return false;
8184
8185 // get DigestBase klass to lookup for SHA klass
8186 const TypeInstPtr* tinst = _gvn.type(digestBase_obj)->isa_instptr();
8187 assert(tinst != nullptr, "digestBase_obj is not instance???");
8188 assert(tinst->is_loaded(), "DigestBase is not loaded");
8189
8190 ciKlass* klass_digestBase = tinst->instance_klass()->find_klass(ciSymbol::make(klass_digestBase_name));
8191 assert(klass_digestBase->is_loaded(), "predicate checks that this class is loaded");
8192 ciInstanceKlass* instklass_digestBase = klass_digestBase->as_instance_klass();
8193 return inline_digestBase_implCompressMB(digestBase_obj, instklass_digestBase, elem_type, stub_addr, stub_name, src_start, ofs, limit);
8194 }
8195 return false;
8196 }
8197
8198 //------------------------------inline_digestBase_implCompressMB-----------------------
8199 bool LibraryCallKit::inline_digestBase_implCompressMB(Node* digestBase_obj, ciInstanceKlass* instklass_digestBase,
8200 BasicType elem_type, address stubAddr, const char *stubName,
8201 Node* src_start, Node* ofs, Node* limit) {
8202 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_digestBase);
8203 const TypeOopPtr* xtype = aklass->cast_to_exactness(false)->as_instance_type()->cast_to_ptr_type(TypePtr::NotNull);
8204 Node* digest_obj = new CheckCastPPNode(control(), digestBase_obj, xtype);
8205 digest_obj = _gvn.transform(digest_obj);
8206
8207 Node* state = get_state_from_digest_object(digest_obj, elem_type);
8208 if (state == nullptr) return false;
8209
8210 Node* block_size = nullptr;
8211 if (strcmp("sha3_implCompressMB", stubName) == 0) {
8212 block_size = get_block_size_from_digest_object(digest_obj);
8213 if (block_size == nullptr) return false;
8214 }
8215
8216 // Call the stub.
8217 Node* call;
8218 if (block_size == nullptr) {
8219 call = make_runtime_call(RC_LEAF|RC_NO_FP,
8220 OptoRuntime::digestBase_implCompressMB_Type(false),
8221 stubAddr, stubName, TypePtr::BOTTOM,
8222 src_start, state, ofs, limit);
8223 } else {
8224 call = make_runtime_call(RC_LEAF|RC_NO_FP,
8225 OptoRuntime::digestBase_implCompressMB_Type(true),
8226 stubAddr, stubName, TypePtr::BOTTOM,
8227 src_start, state, block_size, ofs, limit);
8228 }
8229
8230 // return ofs (int)
8231 Node* result = _gvn.transform(new ProjNode(call, TypeFunc::Parms));
8232 set_result(result);
8233
8234 return true;
8235 }
8236
8237 //------------------------------inline_galoisCounterMode_AESCrypt-----------------------
8238 bool LibraryCallKit::inline_galoisCounterMode_AESCrypt() {
8239 assert(UseAES, "need AES instruction support");
8240 address stubAddr = nullptr;
8241 const char *stubName = nullptr;
8242 stubAddr = StubRoutines::galoisCounterMode_AESCrypt();
8243 stubName = "galoisCounterMode_AESCrypt";
8244
8245 if (stubAddr == nullptr) return false;
8246
8247 Node* in = argument(0);
8248 Node* inOfs = argument(1);
8249 Node* len = argument(2);
8250 Node* ct = argument(3);
8251 Node* ctOfs = argument(4);
8252 Node* out = argument(5);
8253 Node* outOfs = argument(6);
8254 Node* gctr_object = argument(7);
8255 Node* ghash_object = argument(8);
8256
8257 // (1) in, ct and out are arrays.
8258 const TypeAryPtr* in_type = in->Value(&_gvn)->isa_aryptr();
8259 const TypeAryPtr* ct_type = ct->Value(&_gvn)->isa_aryptr();
8260 const TypeAryPtr* out_type = out->Value(&_gvn)->isa_aryptr();
8261 assert( in_type != nullptr && in_type->elem() != Type::BOTTOM &&
8262 ct_type != nullptr && ct_type->elem() != Type::BOTTOM &&
8263 out_type != nullptr && out_type->elem() != Type::BOTTOM, "args are strange");
8264
8265 // checks are the responsibility of the caller
8266 Node* in_start = in;
8267 Node* ct_start = ct;
8268 Node* out_start = out;
8269 if (inOfs != nullptr || ctOfs != nullptr || outOfs != nullptr) {
8270 assert(inOfs != nullptr && ctOfs != nullptr && outOfs != nullptr, "");
8271 in_start = array_element_address(in, inOfs, T_BYTE);
8272 ct_start = array_element_address(ct, ctOfs, T_BYTE);
8273 out_start = array_element_address(out, outOfs, T_BYTE);
8274 }
8275
8276 // if we are in this set of code, we "know" the embeddedCipher is an AESCrypt object
8277 // (because of the predicated logic executed earlier).
8278 // so we cast it here safely.
8279 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java
8280 Node* embeddedCipherObj = load_field_from_object(gctr_object, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;");
8281 Node* counter = load_field_from_object(gctr_object, "counter", "[B");
8282 Node* subkeyHtbl = load_field_from_object(ghash_object, "subkeyHtbl", "[J");
8283 Node* state = load_field_from_object(ghash_object, "state", "[J");
8284
8285 if (embeddedCipherObj == nullptr || counter == nullptr || subkeyHtbl == nullptr || state == nullptr) {
8286 return false;
8287 }
8288 // cast it to what we know it will be at runtime
8289 const TypeInstPtr* tinst = _gvn.type(gctr_object)->isa_instptr();
8290 assert(tinst != nullptr, "GCTR obj is null");
8291 assert(tinst->is_loaded(), "GCTR obj is not loaded");
8292 ciKlass* klass_AESCrypt = tinst->instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt"));
8293 assert(klass_AESCrypt->is_loaded(), "predicate checks that this class is loaded");
8294 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass();
8295 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_AESCrypt);
8296 const TypeOopPtr* xtype = aklass->as_instance_type();
8297 Node* aescrypt_object = new CheckCastPPNode(control(), embeddedCipherObj, xtype);
8298 aescrypt_object = _gvn.transform(aescrypt_object);
8299 // we need to get the start of the aescrypt_object's expanded key array
8300 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object);
8301 if (k_start == nullptr) return false;
8302 // similarly, get the start address of the r vector
8303 Node* cnt_start = array_element_address(counter, intcon(0), T_BYTE);
8304 Node* state_start = array_element_address(state, intcon(0), T_LONG);
8305 Node* subkeyHtbl_start = array_element_address(subkeyHtbl, intcon(0), T_LONG);
8306
8307
8308 // Call the stub, passing params
8309 Node* gcmCrypt = make_runtime_call(RC_LEAF|RC_NO_FP,
8310 OptoRuntime::galoisCounterMode_aescrypt_Type(),
8311 stubAddr, stubName, TypePtr::BOTTOM,
8312 in_start, len, ct_start, out_start, k_start, state_start, subkeyHtbl_start, cnt_start);
8313
8314 // return cipher length (int)
8315 Node* retvalue = _gvn.transform(new ProjNode(gcmCrypt, TypeFunc::Parms));
8316 set_result(retvalue);
8317
8318 return true;
8319 }
8320
8321 //----------------------------inline_galoisCounterMode_AESCrypt_predicate----------------------------
8322 // Return node representing slow path of predicate check.
8323 // the pseudo code we want to emulate with this predicate is:
8324 // for encryption:
8325 // if (embeddedCipherObj instanceof AESCrypt) do_intrinsic, else do_javapath
8326 // for decryption:
8327 // if ((embeddedCipherObj instanceof AESCrypt) && (cipher!=plain)) do_intrinsic, else do_javapath
8328 // note cipher==plain is more conservative than the original java code but that's OK
8329 //
8330
8331 Node* LibraryCallKit::inline_galoisCounterMode_AESCrypt_predicate() {
8332 // The receiver was checked for null already.
8333 Node* objGCTR = argument(7);
8334 // Load embeddedCipher field of GCTR object.
8335 Node* embeddedCipherObj = load_field_from_object(objGCTR, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;");
8336 assert(embeddedCipherObj != nullptr, "embeddedCipherObj is null");
8337
8338 // get AESCrypt klass for instanceOf check
8339 // AESCrypt might not be loaded yet if some other SymmetricCipher got us to this compile point
8340 // will have same classloader as CipherBlockChaining object
8341 const TypeInstPtr* tinst = _gvn.type(objGCTR)->isa_instptr();
8342 assert(tinst != nullptr, "GCTR obj is null");
8343 assert(tinst->is_loaded(), "GCTR obj is not loaded");
8344
8345 // we want to do an instanceof comparison against the AESCrypt class
8346 ciKlass* klass_AESCrypt = tinst->instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt"));
8347 if (!klass_AESCrypt->is_loaded()) {
8348 // if AESCrypt is not even loaded, we never take the intrinsic fast path
8349 Node* ctrl = control();
8350 set_control(top()); // no regular fast path
8351 return ctrl;
8352 }
8353
8354 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass();
8355 Node* instof = gen_instanceof(embeddedCipherObj, makecon(TypeKlassPtr::make(instklass_AESCrypt)));
8356 Node* cmp_instof = _gvn.transform(new CmpINode(instof, intcon(1)));
8357 Node* bool_instof = _gvn.transform(new BoolNode(cmp_instof, BoolTest::ne));
8358 Node* instof_false = generate_guard(bool_instof, nullptr, PROB_MIN);
8359
8360 return instof_false; // even if it is null
8361 }
8362
8363 //------------------------------get_state_from_digest_object-----------------------
8364 Node * LibraryCallKit::get_state_from_digest_object(Node *digest_object, BasicType elem_type) {
8365 const char* state_type;
8366 switch (elem_type) {
8367 case T_BYTE: state_type = "[B"; break;
8368 case T_INT: state_type = "[I"; break;
8369 case T_LONG: state_type = "[J"; break;
8370 default: ShouldNotReachHere();
8371 }
8372 Node* digest_state = load_field_from_object(digest_object, "state", state_type);
8373 assert (digest_state != nullptr, "wrong version of sun.security.provider.MD5/SHA/SHA2/SHA5/SHA3");
8374 if (digest_state == nullptr) return (Node *) nullptr;
8375
8376 // now have the array, need to get the start address of the state array
8377 Node* state = array_element_address(digest_state, intcon(0), elem_type);
8378 return state;
8379 }
8380
8381 //------------------------------get_block_size_from_sha3_object----------------------------------
8382 Node * LibraryCallKit::get_block_size_from_digest_object(Node *digest_object) {
8383 Node* block_size = load_field_from_object(digest_object, "blockSize", "I");
8384 assert (block_size != nullptr, "sanity");
8385 return block_size;
8386 }
8387
8388 //----------------------------inline_digestBase_implCompressMB_predicate----------------------------
8389 // Return node representing slow path of predicate check.
8390 // the pseudo code we want to emulate with this predicate is:
8391 // if (digestBaseObj instanceof MD5/SHA/SHA2/SHA5/SHA3) do_intrinsic, else do_javapath
8392 //
8393 Node* LibraryCallKit::inline_digestBase_implCompressMB_predicate(int predicate) {
8394 assert(UseMD5Intrinsics || UseSHA1Intrinsics || UseSHA256Intrinsics || UseSHA512Intrinsics || UseSHA3Intrinsics,
8395 "need MD5/SHA1/SHA256/SHA512/SHA3 instruction support");
8396 assert((uint)predicate < 5, "sanity");
8397
8398 // The receiver was checked for null already.
8399 Node* digestBaseObj = argument(0);
8400
8401 // get DigestBase klass for instanceOf check
8402 const TypeInstPtr* tinst = _gvn.type(digestBaseObj)->isa_instptr();
8403 assert(tinst != nullptr, "digestBaseObj is null");
8404 assert(tinst->is_loaded(), "DigestBase is not loaded");
8405
8406 const char* klass_name = nullptr;
8407 switch (predicate) {
8408 case 0:
8409 if (UseMD5Intrinsics) {
8410 // we want to do an instanceof comparison against the MD5 class
8411 klass_name = "sun/security/provider/MD5";
8412 }
8413 break;
8414 case 1:
8415 if (UseSHA1Intrinsics) {
8416 // we want to do an instanceof comparison against the SHA class
8417 klass_name = "sun/security/provider/SHA";
8418 }
8419 break;
8420 case 2:
8421 if (UseSHA256Intrinsics) {
8422 // we want to do an instanceof comparison against the SHA2 class
8423 klass_name = "sun/security/provider/SHA2";
8424 }
8425 break;
8426 case 3:
8427 if (UseSHA512Intrinsics) {
8428 // we want to do an instanceof comparison against the SHA5 class
8429 klass_name = "sun/security/provider/SHA5";
8430 }
8431 break;
8432 case 4:
8433 if (UseSHA3Intrinsics) {
8434 // we want to do an instanceof comparison against the SHA3 class
8435 klass_name = "sun/security/provider/SHA3";
8436 }
8437 break;
8438 default:
8439 fatal("unknown SHA intrinsic predicate: %d", predicate);
8440 }
8441
8442 ciKlass* klass = nullptr;
8443 if (klass_name != nullptr) {
8444 klass = tinst->instance_klass()->find_klass(ciSymbol::make(klass_name));
8445 }
8446 if ((klass == nullptr) || !klass->is_loaded()) {
8447 // if none of MD5/SHA/SHA2/SHA5 is loaded, we never take the intrinsic fast path
8448 Node* ctrl = control();
8449 set_control(top()); // no intrinsic path
8450 return ctrl;
8451 }
8452 ciInstanceKlass* instklass = klass->as_instance_klass();
8453
8454 Node* instof = gen_instanceof(digestBaseObj, makecon(TypeKlassPtr::make(instklass)));
8455 Node* cmp_instof = _gvn.transform(new CmpINode(instof, intcon(1)));
8456 Node* bool_instof = _gvn.transform(new BoolNode(cmp_instof, BoolTest::ne));
8457 Node* instof_false = generate_guard(bool_instof, nullptr, PROB_MIN);
8458
8459 return instof_false; // even if it is null
8460 }
8461
8462 //-------------inline_fma-----------------------------------
8463 bool LibraryCallKit::inline_fma(vmIntrinsics::ID id) {
8464 Node *a = nullptr;
8465 Node *b = nullptr;
8466 Node *c = nullptr;
8467 Node* result = nullptr;
8468 switch (id) {
8469 case vmIntrinsics::_fmaD:
8470 assert(callee()->signature()->size() == 6, "fma has 3 parameters of size 2 each.");
8471 // no receiver since it is static method
8472 a = argument(0);
8473 b = argument(2);
8474 c = argument(4);
8475 result = _gvn.transform(new FmaDNode(a, b, c));
8476 break;
8477 case vmIntrinsics::_fmaF:
8478 assert(callee()->signature()->size() == 3, "fma has 3 parameters of size 1 each.");
8479 a = argument(0);
8480 b = argument(1);
8481 c = argument(2);
8482 result = _gvn.transform(new FmaFNode(a, b, c));
8483 break;
8484 default:
8485 fatal_unexpected_iid(id); break;
8486 }
8487 set_result(result);
8488 return true;
8489 }
8490
8491 bool LibraryCallKit::inline_character_compare(vmIntrinsics::ID id) {
8492 // argument(0) is receiver
8493 Node* codePoint = argument(1);
8494 Node* n = nullptr;
8495
8496 switch (id) {
8497 case vmIntrinsics::_isDigit :
8498 n = new DigitNode(control(), codePoint);
8499 break;
8500 case vmIntrinsics::_isLowerCase :
8501 n = new LowerCaseNode(control(), codePoint);
8502 break;
8503 case vmIntrinsics::_isUpperCase :
8504 n = new UpperCaseNode(control(), codePoint);
8505 break;
8506 case vmIntrinsics::_isWhitespace :
8507 n = new WhitespaceNode(control(), codePoint);
8508 break;
8509 default:
8510 fatal_unexpected_iid(id);
8511 }
8512
8513 set_result(_gvn.transform(n));
8514 return true;
8515 }
8516
8517 bool LibraryCallKit::inline_profileBoolean() {
8518 Node* counts = argument(1);
8519 const TypeAryPtr* ary = nullptr;
8520 ciArray* aobj = nullptr;
8521 if (counts->is_Con()
8522 && (ary = counts->bottom_type()->isa_aryptr()) != nullptr
8523 && (aobj = ary->const_oop()->as_array()) != nullptr
8524 && (aobj->length() == 2)) {
8525 // Profile is int[2] where [0] and [1] correspond to false and true value occurrences respectively.
8526 jint false_cnt = aobj->element_value(0).as_int();
8527 jint true_cnt = aobj->element_value(1).as_int();
8528
8529 if (C->log() != nullptr) {
8530 C->log()->elem("observe source='profileBoolean' false='%d' true='%d'",
8531 false_cnt, true_cnt);
8532 }
8533
8534 if (false_cnt + true_cnt == 0) {
8535 // According to profile, never executed.
8536 uncommon_trap_exact(Deoptimization::Reason_intrinsic,
8537 Deoptimization::Action_reinterpret);
8538 return true;
8539 }
8540
8541 // result is a boolean (0 or 1) and its profile (false_cnt & true_cnt)
8542 // is a number of each value occurrences.
8543 Node* result = argument(0);
8544 if (false_cnt == 0 || true_cnt == 0) {
8545 // According to profile, one value has been never seen.
8546 int expected_val = (false_cnt == 0) ? 1 : 0;
8547
8548 Node* cmp = _gvn.transform(new CmpINode(result, intcon(expected_val)));
8549 Node* test = _gvn.transform(new BoolNode(cmp, BoolTest::eq));
8550
8551 IfNode* check = create_and_map_if(control(), test, PROB_ALWAYS, COUNT_UNKNOWN);
8552 Node* fast_path = _gvn.transform(new IfTrueNode(check));
8553 Node* slow_path = _gvn.transform(new IfFalseNode(check));
8554
8555 { // Slow path: uncommon trap for never seen value and then reexecute
8556 // MethodHandleImpl::profileBoolean() to bump the count, so JIT knows
8557 // the value has been seen at least once.
8558 PreserveJVMState pjvms(this);
8559 PreserveReexecuteState preexecs(this);
8560 jvms()->set_should_reexecute(true);
8561
8562 set_control(slow_path);
8563 set_i_o(i_o());
8564
8565 uncommon_trap_exact(Deoptimization::Reason_intrinsic,
8566 Deoptimization::Action_reinterpret);
8567 }
8568 // The guard for never seen value enables sharpening of the result and
8569 // returning a constant. It allows to eliminate branches on the same value
8570 // later on.
8571 set_control(fast_path);
8572 result = intcon(expected_val);
8573 }
8574 // Stop profiling.
8575 // MethodHandleImpl::profileBoolean() has profiling logic in its bytecode.
8576 // By replacing method body with profile data (represented as ProfileBooleanNode
8577 // on IR level) we effectively disable profiling.
8578 // It enables full speed execution once optimized code is generated.
8579 Node* profile = _gvn.transform(new ProfileBooleanNode(result, false_cnt, true_cnt));
8580 C->record_for_igvn(profile);
8581 set_result(profile);
8582 return true;
8583 } else {
8584 // Continue profiling.
8585 // Profile data isn't available at the moment. So, execute method's bytecode version.
8586 // Usually, when GWT LambdaForms are profiled it means that a stand-alone nmethod
8587 // is compiled and counters aren't available since corresponding MethodHandle
8588 // isn't a compile-time constant.
8589 return false;
8590 }
8591 }
8592
8593 bool LibraryCallKit::inline_isCompileConstant() {
8594 Node* n = argument(0);
8595 set_result(n->is_Con() ? intcon(1) : intcon(0));
8596 return true;
8597 }
8598
8599 //------------------------------- inline_getObjectSize --------------------------------------
8600 //
8601 // Calculate the runtime size of the object/array.
8602 // native long sun.instrument.InstrumentationImpl.getObjectSize0(long nativeAgent, Object objectToSize);
8603 //
8604 bool LibraryCallKit::inline_getObjectSize() {
8605 Node* obj = argument(3);
8606 Node* klass_node = load_object_klass(obj);
8607
8608 jint layout_con = Klass::_lh_neutral_value;
8609 Node* layout_val = get_layout_helper(klass_node, layout_con);
8610 int layout_is_con = (layout_val == nullptr);
8611
8612 if (layout_is_con) {
8613 // Layout helper is constant, can figure out things at compile time.
8614
8615 if (Klass::layout_helper_is_instance(layout_con)) {
8616 // Instance case: layout_con contains the size itself.
8617 Node *size = longcon(Klass::layout_helper_size_in_bytes(layout_con));
8618 set_result(size);
8619 } else {
8620 // Array case: size is round(header + element_size*arraylength).
8621 // Since arraylength is different for every array instance, we have to
8622 // compute the whole thing at runtime.
8623
8624 Node* arr_length = load_array_length(obj);
8625
8626 int round_mask = MinObjAlignmentInBytes - 1;
8627 int hsize = Klass::layout_helper_header_size(layout_con);
8628 int eshift = Klass::layout_helper_log2_element_size(layout_con);
8629
8630 if ((round_mask & ~right_n_bits(eshift)) == 0) {
8631 round_mask = 0; // strength-reduce it if it goes away completely
8632 }
8633 assert((hsize & right_n_bits(eshift)) == 0, "hsize is pre-rounded");
8634 Node* header_size = intcon(hsize + round_mask);
8635
8636 Node* lengthx = ConvI2X(arr_length);
8637 Node* headerx = ConvI2X(header_size);
8638
8639 Node* abody = lengthx;
8640 if (eshift != 0) {
8641 abody = _gvn.transform(new LShiftXNode(lengthx, intcon(eshift)));
8642 }
8643 Node* size = _gvn.transform( new AddXNode(headerx, abody) );
8644 if (round_mask != 0) {
8645 size = _gvn.transform( new AndXNode(size, MakeConX(~round_mask)) );
8646 }
8647 size = ConvX2L(size);
8648 set_result(size);
8649 }
8650 } else {
8651 // Layout helper is not constant, need to test for array-ness at runtime.
8652
8653 enum { _instance_path = 1, _array_path, PATH_LIMIT };
8654 RegionNode* result_reg = new RegionNode(PATH_LIMIT);
8655 PhiNode* result_val = new PhiNode(result_reg, TypeLong::LONG);
8656 record_for_igvn(result_reg);
8657
8658 Node* array_ctl = generate_array_guard(klass_node, nullptr, &obj);
8659 if (array_ctl != nullptr) {
8660 // Array case: size is round(header + element_size*arraylength).
8661 // Since arraylength is different for every array instance, we have to
8662 // compute the whole thing at runtime.
8663
8664 PreserveJVMState pjvms(this);
8665 set_control(array_ctl);
8666 Node* arr_length = load_array_length(obj);
8667
8668 int round_mask = MinObjAlignmentInBytes - 1;
8669 Node* mask = intcon(round_mask);
8670
8671 Node* hss = intcon(Klass::_lh_header_size_shift);
8672 Node* hsm = intcon(Klass::_lh_header_size_mask);
8673 Node* header_size = _gvn.transform(new URShiftINode(layout_val, hss));
8674 header_size = _gvn.transform(new AndINode(header_size, hsm));
8675 header_size = _gvn.transform(new AddINode(header_size, mask));
8676
8677 // There is no need to mask or shift this value.
8678 // The semantics of LShiftINode include an implicit mask to 0x1F.
8679 assert(Klass::_lh_log2_element_size_shift == 0, "use shift in place");
8680 Node* elem_shift = layout_val;
8681
8682 Node* lengthx = ConvI2X(arr_length);
8683 Node* headerx = ConvI2X(header_size);
8684
8685 Node* abody = _gvn.transform(new LShiftXNode(lengthx, elem_shift));
8686 Node* size = _gvn.transform(new AddXNode(headerx, abody));
8687 if (round_mask != 0) {
8688 size = _gvn.transform(new AndXNode(size, MakeConX(~round_mask)));
8689 }
8690 size = ConvX2L(size);
8691
8692 result_reg->init_req(_array_path, control());
8693 result_val->init_req(_array_path, size);
8694 }
8695
8696 if (!stopped()) {
8697 // Instance case: the layout helper gives us instance size almost directly,
8698 // but we need to mask out the _lh_instance_slow_path_bit.
8699 Node* size = ConvI2X(layout_val);
8700 assert((int) Klass::_lh_instance_slow_path_bit < BytesPerLong, "clear bit");
8701 Node* mask = MakeConX(~(intptr_t) right_n_bits(LogBytesPerLong));
8702 size = _gvn.transform(new AndXNode(size, mask));
8703 size = ConvX2L(size);
8704
8705 result_reg->init_req(_instance_path, control());
8706 result_val->init_req(_instance_path, size);
8707 }
8708
8709 set_result(result_reg, result_val);
8710 }
8711
8712 return true;
8713 }
8714
8715 //------------------------------- inline_blackhole --------------------------------------
8716 //
8717 // Make sure all arguments to this node are alive.
8718 // This matches methods that were requested to be blackholed through compile commands.
8719 //
8720 bool LibraryCallKit::inline_blackhole() {
8721 assert(callee()->is_static(), "Should have been checked before: only static methods here");
8722 assert(callee()->is_empty(), "Should have been checked before: only empty methods here");
8723 assert(callee()->holder()->is_loaded(), "Should have been checked before: only methods for loaded classes here");
8724
8725 // Blackhole node pinches only the control, not memory. This allows
8726 // the blackhole to be pinned in the loop that computes blackholed
8727 // values, but have no other side effects, like breaking the optimizations
8728 // across the blackhole.
8729
8730 Node* bh = _gvn.transform(new BlackholeNode(control()));
8731 set_control(_gvn.transform(new ProjNode(bh, TypeFunc::Control)));
8732
8733 // Bind call arguments as blackhole arguments to keep them alive
8734 uint nargs = callee()->arg_size();
8735 for (uint i = 0; i < nargs; i++) {
8736 bh->add_req(argument(i));
8737 }
8738
8739 return true;
8740 }
8741
8742 Node* LibraryCallKit::unbox_fp16_value(const TypeInstPtr* float16_box_type, ciField* field, Node* box) {
8743 const TypeInstPtr* box_type = _gvn.type(box)->isa_instptr();
8744 if (box_type == nullptr || box_type->instance_klass() != float16_box_type->instance_klass()) {
8745 return nullptr; // box klass is not Float16
8746 }
8747
8748 // Null check; get notnull casted pointer
8749 Node* null_ctl = top();
8750 Node* not_null_box = null_check_oop(box, &null_ctl, true);
8751 // If not_null_box is dead, only null-path is taken
8752 if (stopped()) {
8753 set_control(null_ctl);
8754 return nullptr;
8755 }
8756 assert(not_null_box->bottom_type()->is_instptr()->maybe_null() == false, "");
8757 const TypePtr* adr_type = C->alias_type(field)->adr_type();
8758 Node* adr = basic_plus_adr(not_null_box, field->offset_in_bytes());
8759 return access_load_at(not_null_box, adr, adr_type, TypeInt::SHORT, T_SHORT, IN_HEAP);
8760 }
8761
8762 Node* LibraryCallKit::box_fp16_value(const TypeInstPtr* float16_box_type, ciField* field, Node* value) {
8763 PreserveReexecuteState preexecs(this);
8764 jvms()->set_should_reexecute(true);
8765
8766 const TypeKlassPtr* klass_type = float16_box_type->as_klass_type();
8767 Node* klass_node = makecon(klass_type);
8768 Node* box = new_instance(klass_node);
8769
8770 Node* value_field = basic_plus_adr(box, field->offset_in_bytes());
8771 const TypePtr* value_adr_type = value_field->bottom_type()->is_ptr();
8772
8773 Node* field_store = _gvn.transform(access_store_at(box,
8774 value_field,
8775 value_adr_type,
8776 value,
8777 TypeInt::SHORT,
8778 T_SHORT,
8779 IN_HEAP));
8780 set_memory(field_store, value_adr_type);
8781 return box;
8782 }
8783
8784 bool LibraryCallKit::inline_fp16_operations(vmIntrinsics::ID id, int num_args) {
8785 if (!Matcher::match_rule_supported(Op_ReinterpretS2HF) ||
8786 !Matcher::match_rule_supported(Op_ReinterpretHF2S)) {
8787 return false;
8788 }
8789
8790 const TypeInstPtr* box_type = _gvn.type(argument(0))->isa_instptr();
8791 if (box_type == nullptr || box_type->const_oop() == nullptr) {
8792 return false;
8793 }
8794
8795 ciInstanceKlass* float16_klass = box_type->const_oop()->as_instance()->java_lang_Class_klass()->as_instance_klass();
8796 const TypeInstPtr* float16_box_type = TypeInstPtr::make_exact(TypePtr::NotNull, float16_klass);
8797 ciField* field = float16_klass->get_field_by_name(ciSymbols::value_name(),
8798 ciSymbols::short_signature(),
8799 false);
8800 assert(field != nullptr, "");
8801
8802 // Transformed nodes
8803 Node* fld1 = nullptr;
8804 Node* fld2 = nullptr;
8805 Node* fld3 = nullptr;
8806 switch(num_args) {
8807 case 3:
8808 fld3 = unbox_fp16_value(float16_box_type, field, argument(3));
8809 if (fld3 == nullptr) {
8810 return false;
8811 }
8812 fld3 = _gvn.transform(new ReinterpretS2HFNode(fld3));
8813 // fall-through
8814 case 2:
8815 fld2 = unbox_fp16_value(float16_box_type, field, argument(2));
8816 if (fld2 == nullptr) {
8817 return false;
8818 }
8819 fld2 = _gvn.transform(new ReinterpretS2HFNode(fld2));
8820 // fall-through
8821 case 1:
8822 fld1 = unbox_fp16_value(float16_box_type, field, argument(1));
8823 if (fld1 == nullptr) {
8824 return false;
8825 }
8826 fld1 = _gvn.transform(new ReinterpretS2HFNode(fld1));
8827 break;
8828 default: fatal("Unsupported number of arguments %d", num_args);
8829 }
8830
8831 Node* result = nullptr;
8832 switch (id) {
8833 // Unary operations
8834 case vmIntrinsics::_sqrt_float16:
8835 result = _gvn.transform(new SqrtHFNode(C, control(), fld1));
8836 break;
8837 // Ternary operations
8838 case vmIntrinsics::_fma_float16:
8839 result = _gvn.transform(new FmaHFNode(fld1, fld2, fld3));
8840 break;
8841 default:
8842 fatal_unexpected_iid(id);
8843 break;
8844 }
8845 result = _gvn.transform(new ReinterpretHF2SNode(result));
8846 set_result(box_fp16_value(float16_box_type, field, result));
8847 return true;
8848 }
8849