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Issue 1716163003: [turbofan] Pick remembered set action for write barrier. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 10 months ago
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1 // Copyright 2013 the V8 project authors. All rights reserved. 1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/compiler/code-generator.h" 5 #include "src/compiler/code-generator.h"
6 6
7 #include "src/ast/scopes.h" 7 #include "src/ast/scopes.h"
8 #include "src/compiler/code-generator-impl.h" 8 #include "src/compiler/code-generator-impl.h"
9 #include "src/compiler/gap-resolver.h" 9 #include "src/compiler/gap-resolver.h"
10 #include "src/compiler/node-matchers.h" 10 #include "src/compiler/node-matchers.h"
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242 scratch1_(scratch1), 242 scratch1_(scratch1),
243 mode_(mode) {} 243 mode_(mode) {}
244 244
245 void Generate() final { 245 void Generate() final {
246 if (mode_ > RecordWriteMode::kValueIsPointer) { 246 if (mode_ > RecordWriteMode::kValueIsPointer) {
247 __ JumpIfSmi(value_, exit()); 247 __ JumpIfSmi(value_, exit());
248 } 248 }
249 __ CheckPageFlag(value_, scratch0_, 249 __ CheckPageFlag(value_, scratch0_,
250 MemoryChunk::kPointersToHereAreInterestingMask, zero, 250 MemoryChunk::kPointersToHereAreInterestingMask, zero,
251 exit()); 251 exit());
252 RememberedSetAction const remembered_set_action =
253 mode_ > RecordWriteMode::kValueIsMap ? EMIT_REMEMBERED_SET
254 : OMIT_REMEMBERED_SET;
252 SaveFPRegsMode const save_fp_mode = 255 SaveFPRegsMode const save_fp_mode =
253 frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs; 256 frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs;
254 RecordWriteStub stub(isolate(), object_, scratch0_, scratch1_, 257 RecordWriteStub stub(isolate(), object_, scratch0_, scratch1_,
255 EMIT_REMEMBERED_SET, save_fp_mode); 258 remembered_set_action, save_fp_mode);
256 __ lea(scratch1_, operand_); 259 __ lea(scratch1_, operand_);
257 __ CallStub(&stub); 260 __ CallStub(&stub);
258 } 261 }
259 262
260 private: 263 private:
261 Register const object_; 264 Register const object_;
262 Operand const operand_; 265 Operand const operand_;
263 Register const value_; 266 Register const value_;
264 Register const scratch0_; 267 Register const scratch0_;
265 Register const scratch1_; 268 Register const scratch1_;
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2227 int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc; 2230 int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc;
2228 __ Nop(padding_size); 2231 __ Nop(padding_size);
2229 } 2232 }
2230 } 2233 }
2231 2234
2232 #undef __ 2235 #undef __
2233 2236
2234 } // namespace compiler 2237 } // namespace compiler
2235 } // namespace internal 2238 } // namespace internal
2236 } // namespace v8 2239 } // namespace v8
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