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 "c1/c1_Compilation.hpp"
26 #include "c1/c1_Compiler.hpp"
27 #include "c1/c1_FrameMap.hpp"
28 #include "c1/c1_GraphBuilder.hpp"
29 #include "c1/c1_LinearScan.hpp"
30 #include "c1/c1_MacroAssembler.hpp"
31 #include "c1/c1_Runtime1.hpp"
32 #include "c1/c1_ValueType.hpp"
33 #include "code/SCCache.hpp"
34 #include "compiler/compileBroker.hpp"
35 #include "compiler/compilerDirectives.hpp"
36 #include "interpreter/linkResolver.hpp"
37 #include "jfr/support/jfrIntrinsics.hpp"
38 #include "memory/allocation.hpp"
39 #include "memory/allocation.inline.hpp"
40 #include "memory/resourceArea.hpp"
41 #include "runtime/interfaceSupport.inline.hpp"
42 #include "runtime/sharedRuntime.hpp"
43 #include "runtime/vm_version.hpp"
44 #include "utilities/bitMap.inline.hpp"
45 #include "utilities/macros.hpp"
46
47
48 Compiler::Compiler() : AbstractCompiler(compiler_c1) {
49 }
50
51 bool Compiler::init_c1_runtime() {
52 BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
53 FrameMap::initialize();
54 if (!Runtime1::initialize(buffer_blob)) {
55 return false;
56 }
57 SCCache::init_c1_table();
58 // initialize data structures
59 ValueType::initialize();
60 GraphBuilder::initialize();
61 // note: to use more than one instance of LinearScan at a time this function call has to
62 // be moved somewhere outside of this constructor:
63 Interval::initialize();
64 return true;
65 }
66
67
68 void Compiler::initialize() {
69 // Buffer blob must be allocated per C1 compiler thread at startup
70 BufferBlob* buffer_blob = init_buffer_blob();
71
72 if (should_perform_init()) {
73 if (buffer_blob == nullptr || !init_c1_runtime()) {
74 // When we come here we are in state 'initializing'; entire C1 compilation
75 // can be shut down.
76 set_state(failed);
77 } else {
78 set_state(initialized);
79 }
80 }
81 }
82
83 uint Compiler::code_buffer_size() {
84 return Compilation::desired_max_code_buffer_size() + Compilation::desired_max_constant_size();
85 }
86
87 BufferBlob* Compiler::init_buffer_blob() {
88 // Allocate buffer blob once at startup since allocation for each
89 // compilation seems to be too expensive (at least on Intel win32).
90 assert (CompilerThread::current()->get_buffer_blob() == nullptr, "Should initialize only once");
91
92 // setup CodeBuffer. Preallocate a BufferBlob of size
93 // NMethodSizeLimit plus some extra space for constants.
94 BufferBlob* buffer_blob = BufferBlob::create("C1 temporary CodeBuffer", code_buffer_size());
95 if (buffer_blob != nullptr) {
96 CompilerThread::current()->set_buffer_blob(buffer_blob);
97 }
98
99 return buffer_blob;
100 }
101
102 bool Compiler::is_intrinsic_supported(const methodHandle& method) {
103 vmIntrinsics::ID id = method->intrinsic_id();
104 assert(id != vmIntrinsics::_none, "must be a VM intrinsic");
105
106 if (method->is_synchronized()) {
107 // C1 does not support intrinsification of synchronized methods.
108 return false;
109 }
110 return Compiler::is_intrinsic_supported(id);
111 }
112
113 bool Compiler::is_intrinsic_supported(vmIntrinsics::ID id) {
114 switch (id) {
115 case vmIntrinsics::_compareAndSetLong:
116 break;
117 case vmIntrinsics::_getAndAddInt:
118 if (!VM_Version::supports_atomic_getadd4()) return false;
119 break;
120 case vmIntrinsics::_getAndAddLong:
121 if (!VM_Version::supports_atomic_getadd8()) return false;
122 break;
123 case vmIntrinsics::_getAndSetInt:
124 if (!VM_Version::supports_atomic_getset4()) return false;
125 break;
126 case vmIntrinsics::_getAndSetLong:
127 if (!VM_Version::supports_atomic_getset8()) return false;
128 break;
129 case vmIntrinsics::_getAndSetReference:
130 #ifdef _LP64
131 if (!UseCompressedOops && !VM_Version::supports_atomic_getset8()) return false;
132 if (UseCompressedOops && !VM_Version::supports_atomic_getset4()) return false;
133 #else
134 if (!VM_Version::supports_atomic_getset4()) return false;
135 #endif
136 break;
137 case vmIntrinsics::_onSpinWait:
138 if (!VM_Version::supports_on_spin_wait()) return false;
139 break;
140 case vmIntrinsics::_floatToFloat16:
141 case vmIntrinsics::_float16ToFloat:
142 if (!VM_Version::supports_float16()) return false;
143 break;
144 case vmIntrinsics::_arraycopy:
145 case vmIntrinsics::_currentTimeMillis:
146 case vmIntrinsics::_nanoTime:
147 case vmIntrinsics::_Reference_get:
148 // Use the intrinsic version of Reference.get() so that the value in
149 // the referent field can be registered by the G1 pre-barrier code.
150 // Also to prevent commoning reads from this field across safepoint
151 // since GC can change its value.
152 case vmIntrinsics::_loadFence:
153 case vmIntrinsics::_storeFence:
154 case vmIntrinsics::_storeStoreFence:
155 case vmIntrinsics::_fullFence:
156 case vmIntrinsics::_floatToRawIntBits:
157 case vmIntrinsics::_intBitsToFloat:
158 case vmIntrinsics::_doubleToRawLongBits:
159 case vmIntrinsics::_longBitsToDouble:
160 case vmIntrinsics::_getClass:
161 case vmIntrinsics::_isInstance:
162 case vmIntrinsics::_currentCarrierThread:
163 case vmIntrinsics::_currentThread:
164 case vmIntrinsics::_scopedValueCache:
165 case vmIntrinsics::_dabs:
166 case vmIntrinsics::_dsqrt:
167 case vmIntrinsics::_dsqrt_strict:
168 case vmIntrinsics::_dsin:
169 case vmIntrinsics::_dcos:
170 case vmIntrinsics::_dtan:
171 #if defined(AMD64)
172 case vmIntrinsics::_dtanh:
173 #endif
174 case vmIntrinsics::_dlog:
175 case vmIntrinsics::_dlog10:
176 case vmIntrinsics::_dexp:
177 case vmIntrinsics::_dpow:
178 case vmIntrinsics::_fmaD:
179 case vmIntrinsics::_fmaF:
180 case vmIntrinsics::_getReference:
181 case vmIntrinsics::_getBoolean:
182 case vmIntrinsics::_getByte:
183 case vmIntrinsics::_getShort:
184 case vmIntrinsics::_getChar:
185 case vmIntrinsics::_getInt:
186 case vmIntrinsics::_getLong:
187 case vmIntrinsics::_getFloat:
188 case vmIntrinsics::_getDouble:
189 case vmIntrinsics::_putReference:
190 case vmIntrinsics::_putBoolean:
191 case vmIntrinsics::_putByte:
192 case vmIntrinsics::_putShort:
193 case vmIntrinsics::_putChar:
194 case vmIntrinsics::_putInt:
195 case vmIntrinsics::_putLong:
196 case vmIntrinsics::_putFloat:
197 case vmIntrinsics::_putDouble:
198 case vmIntrinsics::_getReferenceVolatile:
199 case vmIntrinsics::_getBooleanVolatile:
200 case vmIntrinsics::_getByteVolatile:
201 case vmIntrinsics::_getShortVolatile:
202 case vmIntrinsics::_getCharVolatile:
203 case vmIntrinsics::_getIntVolatile:
204 case vmIntrinsics::_getLongVolatile:
205 case vmIntrinsics::_getFloatVolatile:
206 case vmIntrinsics::_getDoubleVolatile:
207 case vmIntrinsics::_putReferenceVolatile:
208 case vmIntrinsics::_putBooleanVolatile:
209 case vmIntrinsics::_putByteVolatile:
210 case vmIntrinsics::_putShortVolatile:
211 case vmIntrinsics::_putCharVolatile:
212 case vmIntrinsics::_putIntVolatile:
213 case vmIntrinsics::_putLongVolatile:
214 case vmIntrinsics::_putFloatVolatile:
215 case vmIntrinsics::_putDoubleVolatile:
216 case vmIntrinsics::_getShortUnaligned:
217 case vmIntrinsics::_getCharUnaligned:
218 case vmIntrinsics::_getIntUnaligned:
219 case vmIntrinsics::_getLongUnaligned:
220 case vmIntrinsics::_putShortUnaligned:
221 case vmIntrinsics::_putCharUnaligned:
222 case vmIntrinsics::_putIntUnaligned:
223 case vmIntrinsics::_putLongUnaligned:
224 case vmIntrinsics::_Preconditions_checkIndex:
225 case vmIntrinsics::_Preconditions_checkLongIndex:
226 case vmIntrinsics::_updateCRC32:
227 case vmIntrinsics::_updateBytesCRC32:
228 case vmIntrinsics::_updateByteBufferCRC32:
229 #if defined(S390) || defined(PPC64) || defined(AARCH64) || defined(AMD64)
230 case vmIntrinsics::_updateBytesCRC32C:
231 case vmIntrinsics::_updateDirectByteBufferCRC32C:
232 #endif
233 case vmIntrinsics::_vectorizedMismatch:
234 case vmIntrinsics::_compareAndSetInt:
235 case vmIntrinsics::_compareAndSetReference:
236 case vmIntrinsics::_getCharStringU:
237 case vmIntrinsics::_putCharStringU:
238 #ifdef JFR_HAVE_INTRINSICS
239 case vmIntrinsics::_counterTime:
240 #endif
241 case vmIntrinsics::_getObjectSize:
242 #if defined(X86) || defined(AARCH64) || defined(S390) || defined(RISCV) || defined(PPC64)
243 case vmIntrinsics::_clone:
244 #endif
245 break;
246 case vmIntrinsics::_blackhole:
247 break;
248 default:
249 return false; // Intrinsics not on the previous list are not available.
250 }
251
252 return true;
253 }
254
255 void Compiler::compile_method(ciEnv* env, ciMethod* method, int entry_bci, bool install_code, DirectiveSet* directive) {
256 CompileTask* task = env->task();
257 if (install_code && task->is_scc()) {
258 assert(!task->preload(), "Pre-loading cached code is not implemeted for C1 code");
259 bool success = SCCache::load_nmethod(env, method, entry_bci, this, CompLevel(task->comp_level()));
260 if (success) {
261 assert(task->is_success(), "sanity");
262 return;
263 }
264 SCCache::invalidate(task->scc_entry()); // mark scc_entry as not entrant
265 if (SCCache::is_code_load_thread_on() && !StoreCachedCode) {
266 // Bail out if failed to load cached code in SC thread
267 // unless the code is updating.
268 env->record_failure("Failed to load cached code");
269 return;
270 }
271 task->clear_scc();
272 }
273 BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob();
274 assert(buffer_blob != nullptr, "Must exist");
275 // invoke compilation
276 {
277 // We are nested here because we need for the destructor
278 // of Compilation to occur before we release the any
279 // competing compiler thread
280 ResourceMark rm;
281 Compilation c(this, env, method, entry_bci, buffer_blob, install_code, directive);
282 }
283 }
284
285
286 void Compiler::print_timers() {
287 Compilation::print_timers();
288 }