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