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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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/arm64/frames-arm64.h" | 7 #include "src/arm64/frames-arm64.h" |
8 #include "src/arm64/macro-assembler-arm64.h" | 8 #include "src/arm64/macro-assembler-arm64.h" |
9 #include "src/compiler/code-generator-impl.h" | 9 #include "src/compiler/code-generator-impl.h" |
10 #include "src/compiler/gap-resolver.h" | 10 #include "src/compiler/gap-resolver.h" |
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248 OutOfLineLoadZero(CodeGenerator* gen, Register result) | 248 OutOfLineLoadZero(CodeGenerator* gen, Register result) |
249 : OutOfLineCode(gen), result_(result) {} | 249 : OutOfLineCode(gen), result_(result) {} |
250 | 250 |
251 void Generate() final { __ Mov(result_, 0); } | 251 void Generate() final { __ Mov(result_, 0); } |
252 | 252 |
253 private: | 253 private: |
254 Register const result_; | 254 Register const result_; |
255 }; | 255 }; |
256 | 256 |
257 | 257 |
| 258 class OutOfLineRecordWrite final : public OutOfLineCode { |
| 259 public: |
| 260 OutOfLineRecordWrite(CodeGenerator* gen, Register object, Register index, |
| 261 Register value, Register scratch0, Register scratch1, |
| 262 RecordWriteMode mode) |
| 263 : OutOfLineCode(gen), |
| 264 object_(object), |
| 265 index_(index), |
| 266 value_(value), |
| 267 scratch0_(scratch0), |
| 268 scratch1_(scratch1), |
| 269 mode_(mode) {} |
| 270 |
| 271 void Generate() final { |
| 272 if (mode_ > RecordWriteMode::kValueIsPointer) { |
| 273 __ JumpIfSmi(value_, exit()); |
| 274 } |
| 275 if (mode_ > RecordWriteMode::kValueIsMap) { |
| 276 __ CheckPageFlagClear(value_, scratch0_, |
| 277 MemoryChunk::kPointersToHereAreInterestingMask, |
| 278 exit()); |
| 279 } |
| 280 SaveFPRegsMode const save_fp_mode = |
| 281 frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs; |
| 282 // TODO(turbofan): Once we get frame elision working, we need to save |
| 283 // and restore lr properly here if the frame was elided. |
| 284 RecordWriteStub stub(isolate(), object_, scratch0_, scratch1_, |
| 285 EMIT_REMEMBERED_SET, save_fp_mode); |
| 286 __ Add(scratch1_, object_, index_); |
| 287 __ CallStub(&stub); |
| 288 } |
| 289 |
| 290 private: |
| 291 Register const object_; |
| 292 Register const index_; |
| 293 Register const value_; |
| 294 Register const scratch0_; |
| 295 Register const scratch1_; |
| 296 RecordWriteMode const mode_; |
| 297 }; |
| 298 |
| 299 |
258 Condition FlagsConditionToCondition(FlagsCondition condition) { | 300 Condition FlagsConditionToCondition(FlagsCondition condition) { |
259 switch (condition) { | 301 switch (condition) { |
260 case kEqual: | 302 case kEqual: |
261 return eq; | 303 return eq; |
262 case kNotEqual: | 304 case kNotEqual: |
263 return ne; | 305 return ne; |
264 case kSignedLessThan: | 306 case kSignedLessThan: |
265 return lt; | 307 return lt; |
266 case kSignedGreaterThanOrEqual: | 308 case kSignedGreaterThanOrEqual: |
267 return ge; | 309 return ge; |
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522 break; | 564 break; |
523 case kArchStackPointer: | 565 case kArchStackPointer: |
524 __ mov(i.OutputRegister(), masm()->StackPointer()); | 566 __ mov(i.OutputRegister(), masm()->StackPointer()); |
525 break; | 567 break; |
526 case kArchFramePointer: | 568 case kArchFramePointer: |
527 __ mov(i.OutputRegister(), fp); | 569 __ mov(i.OutputRegister(), fp); |
528 break; | 570 break; |
529 case kArchTruncateDoubleToI: | 571 case kArchTruncateDoubleToI: |
530 __ TruncateDoubleToI(i.OutputRegister(), i.InputDoubleRegister(0)); | 572 __ TruncateDoubleToI(i.OutputRegister(), i.InputDoubleRegister(0)); |
531 break; | 573 break; |
| 574 case kArchRecordWrite: { |
| 575 RecordWriteMode mode = |
| 576 static_cast<RecordWriteMode>(MiscField::decode(instr->opcode())); |
| 577 Register object = i.InputRegister(0); |
| 578 Register index = i.InputRegister(1); |
| 579 Register value = |
| 580 (mode > RecordWriteMode::kValueIsMap) ? i.InputRegister(2) : no_reg; |
| 581 Register scratch0 = i.TempRegister(0); |
| 582 Register scratch1 = i.TempRegister(1); |
| 583 auto ool = new (zone()) OutOfLineRecordWrite(this, object, index, value, |
| 584 scratch0, scratch1, mode); |
| 585 __ CheckPageFlagSet(object, scratch0, |
| 586 MemoryChunk::kPointersFromHereAreInterestingMask, |
| 587 ool->entry()); |
| 588 __ Bind(ool->exit()); |
| 589 break; |
| 590 } |
532 case kArm64Float64RoundDown: | 591 case kArm64Float64RoundDown: |
533 __ Frintm(i.OutputDoubleRegister(), i.InputDoubleRegister(0)); | 592 __ Frintm(i.OutputDoubleRegister(), i.InputDoubleRegister(0)); |
534 break; | 593 break; |
535 case kArm64Float64RoundTiesAway: | 594 case kArm64Float64RoundTiesAway: |
536 __ Frinta(i.OutputDoubleRegister(), i.InputDoubleRegister(0)); | 595 __ Frinta(i.OutputDoubleRegister(), i.InputDoubleRegister(0)); |
537 break; | 596 break; |
538 case kArm64Float64RoundTruncate: | 597 case kArm64Float64RoundTruncate: |
539 __ Frintz(i.OutputDoubleRegister(), i.InputDoubleRegister(0)); | 598 __ Frintz(i.OutputDoubleRegister(), i.InputDoubleRegister(0)); |
540 break; | 599 break; |
541 case kArm64Float64RoundUp: | 600 case kArm64Float64RoundUp: |
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988 break; | 1047 break; |
989 case kArm64StrS: | 1048 case kArm64StrS: |
990 __ Str(i.InputDoubleRegister(2).S(), i.MemoryOperand()); | 1049 __ Str(i.InputDoubleRegister(2).S(), i.MemoryOperand()); |
991 break; | 1050 break; |
992 case kArm64LdrD: | 1051 case kArm64LdrD: |
993 __ Ldr(i.OutputDoubleRegister(), i.MemoryOperand()); | 1052 __ Ldr(i.OutputDoubleRegister(), i.MemoryOperand()); |
994 break; | 1053 break; |
995 case kArm64StrD: | 1054 case kArm64StrD: |
996 __ Str(i.InputDoubleRegister(2), i.MemoryOperand()); | 1055 __ Str(i.InputDoubleRegister(2), i.MemoryOperand()); |
997 break; | 1056 break; |
998 case kArm64StoreWriteBarrier: { | |
999 Register object = i.InputRegister(0); | |
1000 Register index = i.InputRegister(1); | |
1001 Register value = i.InputRegister(2); | |
1002 __ Add(index, object, index); | |
1003 __ Str(value, MemOperand(index)); | |
1004 SaveFPRegsMode mode = | |
1005 frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs; | |
1006 // TODO(dcarney): we shouldn't test write barriers from c calls. | |
1007 LinkRegisterStatus lr_status = kLRHasNotBeenSaved; | |
1008 UseScratchRegisterScope scope(masm()); | |
1009 Register temp = no_reg; | |
1010 if (csp.is(masm()->StackPointer())) { | |
1011 temp = scope.AcquireX(); | |
1012 lr_status = kLRHasBeenSaved; | |
1013 __ Push(lr, temp); // Need to push a pair | |
1014 } | |
1015 __ RecordWrite(object, index, value, lr_status, mode); | |
1016 if (csp.is(masm()->StackPointer())) { | |
1017 __ Pop(temp, lr); | |
1018 } | |
1019 break; | |
1020 } | |
1021 case kCheckedLoadInt8: | 1057 case kCheckedLoadInt8: |
1022 ASSEMBLE_CHECKED_LOAD_INTEGER(Ldrsb); | 1058 ASSEMBLE_CHECKED_LOAD_INTEGER(Ldrsb); |
1023 break; | 1059 break; |
1024 case kCheckedLoadUint8: | 1060 case kCheckedLoadUint8: |
1025 ASSEMBLE_CHECKED_LOAD_INTEGER(Ldrb); | 1061 ASSEMBLE_CHECKED_LOAD_INTEGER(Ldrb); |
1026 break; | 1062 break; |
1027 case kCheckedLoadInt16: | 1063 case kCheckedLoadInt16: |
1028 ASSEMBLE_CHECKED_LOAD_INTEGER(Ldrsh); | 1064 ASSEMBLE_CHECKED_LOAD_INTEGER(Ldrsh); |
1029 break; | 1065 break; |
1030 case kCheckedLoadUint16: | 1066 case kCheckedLoadUint16: |
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1463 padding_size -= kInstructionSize; | 1499 padding_size -= kInstructionSize; |
1464 } | 1500 } |
1465 } | 1501 } |
1466 } | 1502 } |
1467 | 1503 |
1468 #undef __ | 1504 #undef __ |
1469 | 1505 |
1470 } // namespace compiler | 1506 } // namespace compiler |
1471 } // namespace internal | 1507 } // namespace internal |
1472 } // namespace v8 | 1508 } // namespace v8 |
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