1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
9 #include "src/hydrogen-osr.h"
10 #include "src/lithium-inl.h"
11 #include "src/x87/lithium-codegen-x87.h"
16 #define DEFINE_COMPILE(type) \
17 void L##type::CompileToNative(LCodeGen* generator) { \
18 generator->Do##type(this); \
20 LITHIUM_CONCRETE_INSTRUCTION_LIST(DEFINE_COMPILE)
25 void LInstruction::VerifyCall() {
26 // Call instructions can use only fixed registers as temporaries and
27 // outputs because all registers are blocked by the calling convention.
28 // Inputs operands must use a fixed register or use-at-start policy or
29 // a non-register policy.
30 DCHECK(Output() == NULL ||
31 LUnallocated::cast(Output())->HasFixedPolicy() ||
32 !LUnallocated::cast(Output())->HasRegisterPolicy());
33 for (UseIterator it(this); !it.Done(); it.Advance()) {
34 LUnallocated* operand = LUnallocated::cast(it.Current());
35 DCHECK(operand->HasFixedPolicy() ||
36 operand->IsUsedAtStart());
38 for (TempIterator it(this); !it.Done(); it.Advance()) {
39 LUnallocated* operand = LUnallocated::cast(it.Current());
40 DCHECK(operand->HasFixedPolicy() ||!operand->HasRegisterPolicy());
46 bool LInstruction::HasDoubleRegisterResult() {
47 return HasResult() && result()->IsDoubleRegister();
51 bool LInstruction::HasDoubleRegisterInput() {
52 for (int i = 0; i < InputCount(); i++) {
53 LOperand* op = InputAt(i);
54 if (op != NULL && op->IsDoubleRegister()) {
62 bool LInstruction::IsDoubleInput(X87Register reg, LCodeGen* cgen) {
63 for (int i = 0; i < InputCount(); i++) {
64 LOperand* op = InputAt(i);
65 if (op != NULL && op->IsDoubleRegister()) {
66 if (cgen->ToX87Register(op).is(reg)) return true;
73 void LInstruction::PrintTo(StringStream* stream) {
74 stream->Add("%s ", this->Mnemonic());
76 PrintOutputOperandTo(stream);
80 if (HasEnvironment()) {
82 environment()->PrintTo(stream);
85 if (HasPointerMap()) {
87 pointer_map()->PrintTo(stream);
92 void LInstruction::PrintDataTo(StringStream* stream) {
94 for (int i = 0; i < InputCount(); i++) {
95 if (i > 0) stream->Add(" ");
96 if (InputAt(i) == NULL) {
99 InputAt(i)->PrintTo(stream);
105 void LInstruction::PrintOutputOperandTo(StringStream* stream) {
106 if (HasResult()) result()->PrintTo(stream);
110 void LLabel::PrintDataTo(StringStream* stream) {
111 LGap::PrintDataTo(stream);
112 LLabel* rep = replacement();
114 stream->Add(" Dead block replaced with B%d", rep->block_id());
119 bool LGap::IsRedundant() const {
120 for (int i = 0; i < 4; i++) {
121 if (parallel_moves_[i] != NULL && !parallel_moves_[i]->IsRedundant()) {
130 void LGap::PrintDataTo(StringStream* stream) {
131 for (int i = 0; i < 4; i++) {
133 if (parallel_moves_[i] != NULL) {
134 parallel_moves_[i]->PrintDataTo(stream);
141 const char* LArithmeticD::Mnemonic() const {
143 case Token::ADD: return "add-d";
144 case Token::SUB: return "sub-d";
145 case Token::MUL: return "mul-d";
146 case Token::DIV: return "div-d";
147 case Token::MOD: return "mod-d";
155 const char* LArithmeticT::Mnemonic() const {
157 case Token::ADD: return "add-t";
158 case Token::SUB: return "sub-t";
159 case Token::MUL: return "mul-t";
160 case Token::MOD: return "mod-t";
161 case Token::DIV: return "div-t";
162 case Token::BIT_AND: return "bit-and-t";
163 case Token::BIT_OR: return "bit-or-t";
164 case Token::BIT_XOR: return "bit-xor-t";
165 case Token::ROR: return "ror-t";
166 case Token::SHL: return "sal-t";
167 case Token::SAR: return "sar-t";
168 case Token::SHR: return "shr-t";
176 bool LGoto::HasInterestingComment(LCodeGen* gen) const {
177 return !gen->IsNextEmittedBlock(block_id());
181 void LGoto::PrintDataTo(StringStream* stream) {
182 stream->Add("B%d", block_id());
186 void LBranch::PrintDataTo(StringStream* stream) {
187 stream->Add("B%d | B%d on ", true_block_id(), false_block_id());
188 value()->PrintTo(stream);
192 void LCompareNumericAndBranch::PrintDataTo(StringStream* stream) {
194 left()->PrintTo(stream);
195 stream->Add(" %s ", Token::String(op()));
196 right()->PrintTo(stream);
197 stream->Add(" then B%d else B%d", true_block_id(), false_block_id());
201 void LIsObjectAndBranch::PrintDataTo(StringStream* stream) {
202 stream->Add("if is_object(");
203 value()->PrintTo(stream);
204 stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
208 void LIsStringAndBranch::PrintDataTo(StringStream* stream) {
209 stream->Add("if is_string(");
210 value()->PrintTo(stream);
211 stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
215 void LIsSmiAndBranch::PrintDataTo(StringStream* stream) {
216 stream->Add("if is_smi(");
217 value()->PrintTo(stream);
218 stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
222 void LIsUndetectableAndBranch::PrintDataTo(StringStream* stream) {
223 stream->Add("if is_undetectable(");
224 value()->PrintTo(stream);
225 stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
229 void LStringCompareAndBranch::PrintDataTo(StringStream* stream) {
230 stream->Add("if string_compare(");
231 left()->PrintTo(stream);
232 right()->PrintTo(stream);
233 stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
237 void LHasInstanceTypeAndBranch::PrintDataTo(StringStream* stream) {
238 stream->Add("if has_instance_type(");
239 value()->PrintTo(stream);
240 stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
244 void LHasCachedArrayIndexAndBranch::PrintDataTo(StringStream* stream) {
245 stream->Add("if has_cached_array_index(");
246 value()->PrintTo(stream);
247 stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
251 void LClassOfTestAndBranch::PrintDataTo(StringStream* stream) {
252 stream->Add("if class_of_test(");
253 value()->PrintTo(stream);
254 stream->Add(", \"%o\") then B%d else B%d",
255 *hydrogen()->class_name(),
261 void LTypeofIsAndBranch::PrintDataTo(StringStream* stream) {
262 stream->Add("if typeof ");
263 value()->PrintTo(stream);
264 stream->Add(" == \"%s\" then B%d else B%d",
265 hydrogen()->type_literal()->ToCString().get(),
266 true_block_id(), false_block_id());
270 void LStoreCodeEntry::PrintDataTo(StringStream* stream) {
272 function()->PrintTo(stream);
273 stream->Add(".code_entry = ");
274 code_object()->PrintTo(stream);
278 void LInnerAllocatedObject::PrintDataTo(StringStream* stream) {
280 base_object()->PrintTo(stream);
282 offset()->PrintTo(stream);
286 void LCallJSFunction::PrintDataTo(StringStream* stream) {
288 function()->PrintTo(stream);
289 stream->Add("#%d / ", arity());
293 void LCallWithDescriptor::PrintDataTo(StringStream* stream) {
294 for (int i = 0; i < InputCount(); i++) {
295 InputAt(i)->PrintTo(stream);
298 stream->Add("#%d / ", arity());
302 void LLoadContextSlot::PrintDataTo(StringStream* stream) {
303 context()->PrintTo(stream);
304 stream->Add("[%d]", slot_index());
308 void LStoreContextSlot::PrintDataTo(StringStream* stream) {
309 context()->PrintTo(stream);
310 stream->Add("[%d] <- ", slot_index());
311 value()->PrintTo(stream);
315 void LInvokeFunction::PrintDataTo(StringStream* stream) {
317 context()->PrintTo(stream);
319 function()->PrintTo(stream);
320 stream->Add(" #%d / ", arity());
324 void LCallNew::PrintDataTo(StringStream* stream) {
326 context()->PrintTo(stream);
328 constructor()->PrintTo(stream);
329 stream->Add(" #%d / ", arity());
333 void LCallNewArray::PrintDataTo(StringStream* stream) {
335 context()->PrintTo(stream);
337 constructor()->PrintTo(stream);
338 stream->Add(" #%d / ", arity());
339 ElementsKind kind = hydrogen()->elements_kind();
340 stream->Add(" (%s) ", ElementsKindToString(kind));
344 void LAccessArgumentsAt::PrintDataTo(StringStream* stream) {
345 arguments()->PrintTo(stream);
347 stream->Add(" length ");
348 length()->PrintTo(stream);
350 stream->Add(" index ");
351 index()->PrintTo(stream);
355 int LPlatformChunk::GetNextSpillIndex(RegisterKind kind) {
356 // Skip a slot if for a double-width slot.
357 if (kind == DOUBLE_REGISTERS) {
359 spill_slot_count_ |= 1;
362 return spill_slot_count_++;
366 LOperand* LPlatformChunk::GetNextSpillSlot(RegisterKind kind) {
367 int index = GetNextSpillIndex(kind);
368 if (kind == DOUBLE_REGISTERS) {
369 return LDoubleStackSlot::Create(index, zone());
371 DCHECK(kind == GENERAL_REGISTERS);
372 return LStackSlot::Create(index, zone());
377 void LStoreNamedField::PrintDataTo(StringStream* stream) {
378 object()->PrintTo(stream);
380 os << hydrogen()->access() << " <- ";
381 stream->Add(os.c_str());
382 value()->PrintTo(stream);
386 void LStoreNamedGeneric::PrintDataTo(StringStream* stream) {
387 object()->PrintTo(stream);
389 stream->Add(String::cast(*name())->ToCString().get());
391 value()->PrintTo(stream);
395 void LLoadKeyed::PrintDataTo(StringStream* stream) {
396 elements()->PrintTo(stream);
398 key()->PrintTo(stream);
399 if (hydrogen()->IsDehoisted()) {
400 stream->Add(" + %d]", base_offset());
407 void LStoreKeyed::PrintDataTo(StringStream* stream) {
408 elements()->PrintTo(stream);
410 key()->PrintTo(stream);
411 if (hydrogen()->IsDehoisted()) {
412 stream->Add(" + %d] <-", base_offset());
414 stream->Add("] <- ");
417 if (value() == NULL) {
418 DCHECK(hydrogen()->IsConstantHoleStore() &&
419 hydrogen()->value()->representation().IsDouble());
420 stream->Add("<the hole(nan)>");
422 value()->PrintTo(stream);
427 void LStoreKeyedGeneric::PrintDataTo(StringStream* stream) {
428 object()->PrintTo(stream);
430 key()->PrintTo(stream);
431 stream->Add("] <- ");
432 value()->PrintTo(stream);
436 void LTransitionElementsKind::PrintDataTo(StringStream* stream) {
437 object()->PrintTo(stream);
438 stream->Add(" %p -> %p", *original_map(), *transitioned_map());
442 LPlatformChunk* LChunkBuilder::Build() {
444 chunk_ = new(zone()) LPlatformChunk(info(), graph());
445 LPhase phase("L_Building chunk", chunk_);
448 // Reserve the first spill slot for the state of dynamic alignment.
449 if (info()->IsOptimizing()) {
450 int alignment_state_index = chunk_->GetNextSpillIndex(GENERAL_REGISTERS);
451 DCHECK_EQ(alignment_state_index, 0);
452 USE(alignment_state_index);
455 // If compiling for OSR, reserve space for the unoptimized frame,
456 // which will be subsumed into this frame.
457 if (graph()->has_osr()) {
458 for (int i = graph()->osr()->UnoptimizedFrameSlots(); i > 0; i--) {
459 chunk_->GetNextSpillIndex(GENERAL_REGISTERS);
463 const ZoneList<HBasicBlock*>* blocks = graph()->blocks();
464 for (int i = 0; i < blocks->length(); i++) {
465 HBasicBlock* next = NULL;
466 if (i < blocks->length() - 1) next = blocks->at(i + 1);
467 DoBasicBlock(blocks->at(i), next);
468 if (is_aborted()) return NULL;
475 LUnallocated* LChunkBuilder::ToUnallocated(Register reg) {
476 return new(zone()) LUnallocated(LUnallocated::FIXED_REGISTER,
477 Register::ToAllocationIndex(reg));
481 LUnallocated* LChunkBuilder::ToUnallocated(X87Register reg) {
482 return new (zone()) LUnallocated(LUnallocated::FIXED_DOUBLE_REGISTER,
483 X87Register::ToAllocationIndex(reg));
487 LOperand* LChunkBuilder::UseFixed(HValue* value, Register fixed_register) {
488 return Use(value, ToUnallocated(fixed_register));
492 LOperand* LChunkBuilder::UseRegister(HValue* value) {
493 return Use(value, new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER));
497 LOperand* LChunkBuilder::UseRegisterAtStart(HValue* value) {
499 new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER,
500 LUnallocated::USED_AT_START));
504 LOperand* LChunkBuilder::UseTempRegister(HValue* value) {
505 return Use(value, new(zone()) LUnallocated(LUnallocated::WRITABLE_REGISTER));
509 LOperand* LChunkBuilder::Use(HValue* value) {
510 return Use(value, new(zone()) LUnallocated(LUnallocated::NONE));
514 LOperand* LChunkBuilder::UseAtStart(HValue* value) {
515 return Use(value, new(zone()) LUnallocated(LUnallocated::NONE,
516 LUnallocated::USED_AT_START));
520 static inline bool CanBeImmediateConstant(HValue* value) {
521 return value->IsConstant() && HConstant::cast(value)->NotInNewSpace();
525 LOperand* LChunkBuilder::UseOrConstant(HValue* value) {
526 return CanBeImmediateConstant(value)
527 ? chunk_->DefineConstantOperand(HConstant::cast(value))
532 LOperand* LChunkBuilder::UseOrConstantAtStart(HValue* value) {
533 return CanBeImmediateConstant(value)
534 ? chunk_->DefineConstantOperand(HConstant::cast(value))
539 LOperand* LChunkBuilder::UseFixedOrConstant(HValue* value,
540 Register fixed_register) {
541 return CanBeImmediateConstant(value)
542 ? chunk_->DefineConstantOperand(HConstant::cast(value))
543 : UseFixed(value, fixed_register);
547 LOperand* LChunkBuilder::UseRegisterOrConstant(HValue* value) {
548 return CanBeImmediateConstant(value)
549 ? chunk_->DefineConstantOperand(HConstant::cast(value))
550 : UseRegister(value);
554 LOperand* LChunkBuilder::UseRegisterOrConstantAtStart(HValue* value) {
555 return CanBeImmediateConstant(value)
556 ? chunk_->DefineConstantOperand(HConstant::cast(value))
557 : UseRegisterAtStart(value);
561 LOperand* LChunkBuilder::UseConstant(HValue* value) {
562 return chunk_->DefineConstantOperand(HConstant::cast(value));
566 LOperand* LChunkBuilder::UseAny(HValue* value) {
567 return value->IsConstant()
568 ? chunk_->DefineConstantOperand(HConstant::cast(value))
569 : Use(value, new(zone()) LUnallocated(LUnallocated::ANY));
573 LOperand* LChunkBuilder::Use(HValue* value, LUnallocated* operand) {
574 if (value->EmitAtUses()) {
575 HInstruction* instr = HInstruction::cast(value);
576 VisitInstruction(instr);
578 operand->set_virtual_register(value->id());
583 LInstruction* LChunkBuilder::Define(LTemplateResultInstruction<1>* instr,
584 LUnallocated* result) {
585 result->set_virtual_register(current_instruction_->id());
586 instr->set_result(result);
591 LInstruction* LChunkBuilder::DefineAsRegister(
592 LTemplateResultInstruction<1>* instr) {
594 new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER));
598 LInstruction* LChunkBuilder::DefineAsSpilled(
599 LTemplateResultInstruction<1>* instr,
602 new(zone()) LUnallocated(LUnallocated::FIXED_SLOT, index));
606 LInstruction* LChunkBuilder::DefineSameAsFirst(
607 LTemplateResultInstruction<1>* instr) {
609 new(zone()) LUnallocated(LUnallocated::SAME_AS_FIRST_INPUT));
613 LInstruction* LChunkBuilder::DefineFixed(LTemplateResultInstruction<1>* instr,
615 return Define(instr, ToUnallocated(reg));
619 LInstruction* LChunkBuilder::DefineFixed(LTemplateResultInstruction<1>* instr,
621 return Define(instr, ToUnallocated(reg));
625 LInstruction* LChunkBuilder::AssignEnvironment(LInstruction* instr) {
626 HEnvironment* hydrogen_env = current_block_->last_environment();
627 int argument_index_accumulator = 0;
628 ZoneList<HValue*> objects_to_materialize(0, zone());
629 instr->set_environment(CreateEnvironment(hydrogen_env,
630 &argument_index_accumulator,
631 &objects_to_materialize));
636 LInstruction* LChunkBuilder::MarkAsCall(LInstruction* instr,
637 HInstruction* hinstr,
638 CanDeoptimize can_deoptimize) {
639 info()->MarkAsNonDeferredCalling();
645 instr = AssignPointerMap(instr);
647 // If instruction does not have side-effects lazy deoptimization
648 // after the call will try to deoptimize to the point before the call.
649 // Thus we still need to attach environment to this call even if
650 // call sequence can not deoptimize eagerly.
651 bool needs_environment =
652 (can_deoptimize == CAN_DEOPTIMIZE_EAGERLY) ||
653 !hinstr->HasObservableSideEffects();
654 if (needs_environment && !instr->HasEnvironment()) {
655 instr = AssignEnvironment(instr);
656 // We can't really figure out if the environment is needed or not.
657 instr->environment()->set_has_been_used();
664 LInstruction* LChunkBuilder::AssignPointerMap(LInstruction* instr) {
665 DCHECK(!instr->HasPointerMap());
666 instr->set_pointer_map(new(zone()) LPointerMap(zone()));
671 LUnallocated* LChunkBuilder::TempRegister() {
672 LUnallocated* operand =
673 new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER);
674 int vreg = allocator_->GetVirtualRegister();
675 if (!allocator_->AllocationOk()) {
676 Abort(kOutOfVirtualRegistersWhileTryingToAllocateTempRegister);
679 operand->set_virtual_register(vreg);
684 LOperand* LChunkBuilder::FixedTemp(Register reg) {
685 LUnallocated* operand = ToUnallocated(reg);
686 DCHECK(operand->HasFixedPolicy());
691 LInstruction* LChunkBuilder::DoBlockEntry(HBlockEntry* instr) {
692 return new(zone()) LLabel(instr->block());
696 LInstruction* LChunkBuilder::DoDummyUse(HDummyUse* instr) {
697 return DefineAsRegister(new(zone()) LDummyUse(UseAny(instr->value())));
701 LInstruction* LChunkBuilder::DoEnvironmentMarker(HEnvironmentMarker* instr) {
707 LInstruction* LChunkBuilder::DoDeoptimize(HDeoptimize* instr) {
708 return AssignEnvironment(new(zone()) LDeoptimize);
712 LInstruction* LChunkBuilder::DoShift(Token::Value op,
713 HBitwiseBinaryOperation* instr) {
714 if (instr->representation().IsSmiOrInteger32()) {
715 DCHECK(instr->left()->representation().Equals(instr->representation()));
716 DCHECK(instr->right()->representation().Equals(instr->representation()));
717 LOperand* left = UseRegisterAtStart(instr->left());
719 HValue* right_value = instr->right();
720 LOperand* right = NULL;
721 int constant_value = 0;
722 bool does_deopt = false;
723 if (right_value->IsConstant()) {
724 HConstant* constant = HConstant::cast(right_value);
725 right = chunk_->DefineConstantOperand(constant);
726 constant_value = constant->Integer32Value() & 0x1f;
727 // Left shifts can deoptimize if we shift by > 0 and the result cannot be
729 if (instr->representation().IsSmi() && constant_value > 0) {
730 does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToSmi);
733 right = UseFixed(right_value, ecx);
736 // Shift operations can only deoptimize if we do a logical shift by 0 and
737 // the result cannot be truncated to int32.
738 if (op == Token::SHR && constant_value == 0) {
739 if (FLAG_opt_safe_uint32_operations) {
740 does_deopt = !instr->CheckFlag(HInstruction::kUint32);
742 does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToInt32);
746 LInstruction* result =
747 DefineSameAsFirst(new(zone()) LShiftI(op, left, right, does_deopt));
748 return does_deopt ? AssignEnvironment(result) : result;
750 return DoArithmeticT(op, instr);
755 LInstruction* LChunkBuilder::DoArithmeticD(Token::Value op,
756 HArithmeticBinaryOperation* instr) {
757 DCHECK(instr->representation().IsDouble());
758 DCHECK(instr->left()->representation().IsDouble());
759 DCHECK(instr->right()->representation().IsDouble());
760 if (op == Token::MOD) {
761 LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand());
762 LOperand* right = UseRegisterAtStart(instr->BetterRightOperand());
763 LArithmeticD* result = new(zone()) LArithmeticD(op, left, right);
764 return MarkAsCall(DefineSameAsFirst(result), instr);
766 LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand());
767 LOperand* right = UseRegisterAtStart(instr->BetterRightOperand());
768 LArithmeticD* result = new(zone()) LArithmeticD(op, left, right);
769 return DefineSameAsFirst(result);
774 LInstruction* LChunkBuilder::DoArithmeticT(Token::Value op,
775 HBinaryOperation* instr) {
776 HValue* left = instr->left();
777 HValue* right = instr->right();
778 DCHECK(left->representation().IsTagged());
779 DCHECK(right->representation().IsTagged());
780 LOperand* context = UseFixed(instr->context(), esi);
781 LOperand* left_operand = UseFixed(left, edx);
782 LOperand* right_operand = UseFixed(right, eax);
783 LArithmeticT* result =
784 new(zone()) LArithmeticT(op, context, left_operand, right_operand);
785 return MarkAsCall(DefineFixed(result, eax), instr);
789 void LChunkBuilder::DoBasicBlock(HBasicBlock* block, HBasicBlock* next_block) {
790 DCHECK(is_building());
791 current_block_ = block;
792 next_block_ = next_block;
793 if (block->IsStartBlock()) {
794 block->UpdateEnvironment(graph_->start_environment());
796 } else if (block->predecessors()->length() == 1) {
797 // We have a single predecessor => copy environment and outgoing
798 // argument count from the predecessor.
799 DCHECK(block->phis()->length() == 0);
800 HBasicBlock* pred = block->predecessors()->at(0);
801 HEnvironment* last_environment = pred->last_environment();
802 DCHECK(last_environment != NULL);
803 // Only copy the environment, if it is later used again.
804 if (pred->end()->SecondSuccessor() == NULL) {
805 DCHECK(pred->end()->FirstSuccessor() == block);
807 if (pred->end()->FirstSuccessor()->block_id() > block->block_id() ||
808 pred->end()->SecondSuccessor()->block_id() > block->block_id()) {
809 last_environment = last_environment->Copy();
812 block->UpdateEnvironment(last_environment);
813 DCHECK(pred->argument_count() >= 0);
814 argument_count_ = pred->argument_count();
816 // We are at a state join => process phis.
817 HBasicBlock* pred = block->predecessors()->at(0);
818 // No need to copy the environment, it cannot be used later.
819 HEnvironment* last_environment = pred->last_environment();
820 for (int i = 0; i < block->phis()->length(); ++i) {
821 HPhi* phi = block->phis()->at(i);
822 if (phi->HasMergedIndex()) {
823 last_environment->SetValueAt(phi->merged_index(), phi);
826 for (int i = 0; i < block->deleted_phis()->length(); ++i) {
827 if (block->deleted_phis()->at(i) < last_environment->length()) {
828 last_environment->SetValueAt(block->deleted_phis()->at(i),
829 graph_->GetConstantUndefined());
832 block->UpdateEnvironment(last_environment);
833 // Pick up the outgoing argument count of one of the predecessors.
834 argument_count_ = pred->argument_count();
836 HInstruction* current = block->first();
837 int start = chunk_->instructions()->length();
838 while (current != NULL && !is_aborted()) {
839 // Code for constants in registers is generated lazily.
840 if (!current->EmitAtUses()) {
841 VisitInstruction(current);
843 current = current->next();
845 int end = chunk_->instructions()->length() - 1;
847 block->set_first_instruction_index(start);
848 block->set_last_instruction_index(end);
850 block->set_argument_count(argument_count_);
852 current_block_ = NULL;
856 void LChunkBuilder::VisitInstruction(HInstruction* current) {
857 HInstruction* old_current = current_instruction_;
858 current_instruction_ = current;
860 LInstruction* instr = NULL;
861 if (current->CanReplaceWithDummyUses()) {
862 if (current->OperandCount() == 0) {
863 instr = DefineAsRegister(new(zone()) LDummy());
865 DCHECK(!current->OperandAt(0)->IsControlInstruction());
866 instr = DefineAsRegister(new(zone())
867 LDummyUse(UseAny(current->OperandAt(0))));
869 for (int i = 1; i < current->OperandCount(); ++i) {
870 if (current->OperandAt(i)->IsControlInstruction()) continue;
871 LInstruction* dummy =
872 new(zone()) LDummyUse(UseAny(current->OperandAt(i)));
873 dummy->set_hydrogen_value(current);
874 chunk_->AddInstruction(dummy, current_block_);
877 HBasicBlock* successor;
878 if (current->IsControlInstruction() &&
879 HControlInstruction::cast(current)->KnownSuccessorBlock(&successor) &&
881 // Always insert a fpu register barrier here when branch is optimized to
883 // TODO(weiliang): require a better solution.
884 if (!current->IsGoto()) {
885 LClobberDoubles* clobber = new (zone()) LClobberDoubles(isolate());
886 clobber->set_hydrogen_value(current);
887 chunk_->AddInstruction(clobber, current_block_);
889 instr = new(zone()) LGoto(successor);
891 instr = current->CompileToLithium(this);
895 argument_count_ += current->argument_delta();
896 DCHECK(argument_count_ >= 0);
899 AddInstruction(instr, current);
902 current_instruction_ = old_current;
906 void LChunkBuilder::AddInstruction(LInstruction* instr,
907 HInstruction* hydrogen_val) {
908 // Associate the hydrogen instruction first, since we may need it for
909 // the ClobbersRegisters() or ClobbersDoubleRegisters() calls below.
910 instr->set_hydrogen_value(hydrogen_val);
913 // Make sure that the lithium instruction has either no fixed register
914 // constraints in temps or the result OR no uses that are only used at
915 // start. If this invariant doesn't hold, the register allocator can decide
916 // to insert a split of a range immediately before the instruction due to an
917 // already allocated register needing to be used for the instruction's fixed
918 // register constraint. In this case, The register allocator won't see an
919 // interference between the split child and the use-at-start (it would if
920 // the it was just a plain use), so it is free to move the split child into
921 // the same register that is used for the use-at-start.
922 // See https://code.google.com/p/chromium/issues/detail?id=201590
923 if (!(instr->ClobbersRegisters() &&
924 instr->ClobbersDoubleRegisters(isolate()))) {
926 int used_at_start = 0;
927 for (UseIterator it(instr); !it.Done(); it.Advance()) {
928 LUnallocated* operand = LUnallocated::cast(it.Current());
929 if (operand->IsUsedAtStart()) ++used_at_start;
931 if (instr->Output() != NULL) {
932 if (LUnallocated::cast(instr->Output())->HasFixedPolicy()) ++fixed;
934 for (TempIterator it(instr); !it.Done(); it.Advance()) {
935 LUnallocated* operand = LUnallocated::cast(it.Current());
936 if (operand->HasFixedPolicy()) ++fixed;
938 DCHECK(fixed == 0 || used_at_start == 0);
942 if (FLAG_stress_pointer_maps && !instr->HasPointerMap()) {
943 instr = AssignPointerMap(instr);
945 if (FLAG_stress_environments && !instr->HasEnvironment()) {
946 instr = AssignEnvironment(instr);
948 if (instr->IsGoto() &&
949 (LGoto::cast(instr)->jumps_to_join() || next_block_->is_osr_entry())) {
950 // TODO(olivf) Since phis of spilled values are joined as registers
951 // (not in the stack slot), we need to allow the goto gaps to keep one
952 // x87 register alive. To ensure all other values are still spilled, we
953 // insert a fpu register barrier right before.
954 LClobberDoubles* clobber = new(zone()) LClobberDoubles(isolate());
955 clobber->set_hydrogen_value(hydrogen_val);
956 chunk_->AddInstruction(clobber, current_block_);
958 chunk_->AddInstruction(instr, current_block_);
960 if (instr->IsCall()) {
961 HValue* hydrogen_value_for_lazy_bailout = hydrogen_val;
962 LInstruction* instruction_needing_environment = NULL;
963 if (hydrogen_val->HasObservableSideEffects()) {
964 HSimulate* sim = HSimulate::cast(hydrogen_val->next());
965 instruction_needing_environment = instr;
966 sim->ReplayEnvironment(current_block_->last_environment());
967 hydrogen_value_for_lazy_bailout = sim;
969 LInstruction* bailout = AssignEnvironment(new(zone()) LLazyBailout());
970 bailout->set_hydrogen_value(hydrogen_value_for_lazy_bailout);
971 chunk_->AddInstruction(bailout, current_block_);
972 if (instruction_needing_environment != NULL) {
973 // Store the lazy deopt environment with the instruction if needed.
974 // Right now it is only used for LInstanceOfKnownGlobal.
975 instruction_needing_environment->
976 SetDeferredLazyDeoptimizationEnvironment(bailout->environment());
982 LInstruction* LChunkBuilder::DoGoto(HGoto* instr) {
983 return new(zone()) LGoto(instr->FirstSuccessor());
987 LInstruction* LChunkBuilder::DoBranch(HBranch* instr) {
988 HValue* value = instr->value();
989 Representation r = value->representation();
990 HType type = value->type();
991 ToBooleanStub::Types expected = instr->expected_input_types();
992 if (expected.IsEmpty()) expected = ToBooleanStub::Types::Generic();
994 bool easy_case = !r.IsTagged() || type.IsBoolean() || type.IsSmi() ||
995 type.IsJSArray() || type.IsHeapNumber() || type.IsString();
996 LOperand* temp = !easy_case && expected.NeedsMap() ? TempRegister() : NULL;
997 LInstruction* branch =
998 temp != NULL ? new (zone()) LBranch(UseRegister(value), temp)
999 : new (zone()) LBranch(UseRegisterAtStart(value), temp);
1001 ((!expected.Contains(ToBooleanStub::SMI) && expected.NeedsMap()) ||
1002 !expected.IsGeneric())) {
1003 branch = AssignEnvironment(branch);
1009 LInstruction* LChunkBuilder::DoDebugBreak(HDebugBreak* instr) {
1010 return new(zone()) LDebugBreak();
1014 LInstruction* LChunkBuilder::DoCompareMap(HCompareMap* instr) {
1015 DCHECK(instr->value()->representation().IsTagged());
1016 LOperand* value = UseRegisterAtStart(instr->value());
1017 return new(zone()) LCmpMapAndBranch(value);
1021 LInstruction* LChunkBuilder::DoArgumentsLength(HArgumentsLength* length) {
1022 info()->MarkAsRequiresFrame();
1023 return DefineAsRegister(new(zone()) LArgumentsLength(Use(length->value())));
1027 LInstruction* LChunkBuilder::DoArgumentsElements(HArgumentsElements* elems) {
1028 info()->MarkAsRequiresFrame();
1029 return DefineAsRegister(new(zone()) LArgumentsElements);
1033 LInstruction* LChunkBuilder::DoInstanceOf(HInstanceOf* instr) {
1034 LOperand* left = UseFixed(instr->left(), InstanceofStub::left());
1035 LOperand* right = UseFixed(instr->right(), InstanceofStub::right());
1036 LOperand* context = UseFixed(instr->context(), esi);
1037 LInstanceOf* result = new(zone()) LInstanceOf(context, left, right);
1038 return MarkAsCall(DefineFixed(result, eax), instr);
1042 LInstruction* LChunkBuilder::DoInstanceOfKnownGlobal(
1043 HInstanceOfKnownGlobal* instr) {
1044 LInstanceOfKnownGlobal* result =
1045 new(zone()) LInstanceOfKnownGlobal(
1046 UseFixed(instr->context(), esi),
1047 UseFixed(instr->left(), InstanceofStub::left()),
1049 return MarkAsCall(DefineFixed(result, eax), instr);
1053 LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) {
1054 LOperand* receiver = UseRegister(instr->receiver());
1055 LOperand* function = UseRegister(instr->function());
1056 LOperand* temp = TempRegister();
1057 LWrapReceiver* result =
1058 new(zone()) LWrapReceiver(receiver, function, temp);
1059 return AssignEnvironment(DefineSameAsFirst(result));
1063 LInstruction* LChunkBuilder::DoApplyArguments(HApplyArguments* instr) {
1064 LOperand* function = UseFixed(instr->function(), edi);
1065 LOperand* receiver = UseFixed(instr->receiver(), eax);
1066 LOperand* length = UseFixed(instr->length(), ebx);
1067 LOperand* elements = UseFixed(instr->elements(), ecx);
1068 LApplyArguments* result = new(zone()) LApplyArguments(function,
1072 return MarkAsCall(DefineFixed(result, eax), instr, CAN_DEOPTIMIZE_EAGERLY);
1076 LInstruction* LChunkBuilder::DoPushArguments(HPushArguments* instr) {
1077 int argc = instr->OperandCount();
1078 for (int i = 0; i < argc; ++i) {
1079 LOperand* argument = UseAny(instr->argument(i));
1080 AddInstruction(new(zone()) LPushArgument(argument), instr);
1086 LInstruction* LChunkBuilder::DoStoreCodeEntry(
1087 HStoreCodeEntry* store_code_entry) {
1088 LOperand* function = UseRegister(store_code_entry->function());
1089 LOperand* code_object = UseTempRegister(store_code_entry->code_object());
1090 return new(zone()) LStoreCodeEntry(function, code_object);
1094 LInstruction* LChunkBuilder::DoInnerAllocatedObject(
1095 HInnerAllocatedObject* instr) {
1096 LOperand* base_object = UseRegisterAtStart(instr->base_object());
1097 LOperand* offset = UseRegisterOrConstantAtStart(instr->offset());
1098 return DefineAsRegister(
1099 new(zone()) LInnerAllocatedObject(base_object, offset));
1103 LInstruction* LChunkBuilder::DoThisFunction(HThisFunction* instr) {
1104 return instr->HasNoUses()
1106 : DefineAsRegister(new(zone()) LThisFunction);
1110 LInstruction* LChunkBuilder::DoContext(HContext* instr) {
1111 if (instr->HasNoUses()) return NULL;
1113 if (info()->IsStub()) {
1114 return DefineFixed(new(zone()) LContext, esi);
1117 return DefineAsRegister(new(zone()) LContext);
1121 LInstruction* LChunkBuilder::DoDeclareGlobals(HDeclareGlobals* instr) {
1122 LOperand* context = UseFixed(instr->context(), esi);
1123 return MarkAsCall(new(zone()) LDeclareGlobals(context), instr);
1127 LInstruction* LChunkBuilder::DoCallJSFunction(
1128 HCallJSFunction* instr) {
1129 LOperand* function = UseFixed(instr->function(), edi);
1131 LCallJSFunction* result = new(zone()) LCallJSFunction(function);
1133 return MarkAsCall(DefineFixed(result, eax), instr, CANNOT_DEOPTIMIZE_EAGERLY);
1137 LInstruction* LChunkBuilder::DoCallWithDescriptor(
1138 HCallWithDescriptor* instr) {
1139 CallInterfaceDescriptor descriptor = instr->descriptor();
1140 LOperand* target = UseRegisterOrConstantAtStart(instr->target());
1141 ZoneList<LOperand*> ops(instr->OperandCount(), zone());
1142 ops.Add(target, zone());
1143 for (int i = 1; i < instr->OperandCount(); i++) {
1145 UseFixed(instr->OperandAt(i), descriptor.GetParameterRegister(i - 1));
1146 ops.Add(op, zone());
1149 LCallWithDescriptor* result = new(zone()) LCallWithDescriptor(
1150 descriptor, ops, zone());
1151 return MarkAsCall(DefineFixed(result, eax), instr, CANNOT_DEOPTIMIZE_EAGERLY);
1155 LInstruction* LChunkBuilder::DoTailCallThroughMegamorphicCache(
1156 HTailCallThroughMegamorphicCache* instr) {
1157 LOperand* context = UseFixed(instr->context(), esi);
1158 LOperand* receiver_register =
1159 UseFixed(instr->receiver(), LoadDescriptor::ReceiverRegister());
1160 LOperand* name_register =
1161 UseFixed(instr->name(), LoadDescriptor::NameRegister());
1162 // Not marked as call. It can't deoptimize, and it never returns.
1163 return new (zone()) LTailCallThroughMegamorphicCache(
1164 context, receiver_register, name_register);
1168 LInstruction* LChunkBuilder::DoInvokeFunction(HInvokeFunction* instr) {
1169 LOperand* context = UseFixed(instr->context(), esi);
1170 LOperand* function = UseFixed(instr->function(), edi);
1171 LInvokeFunction* result = new(zone()) LInvokeFunction(context, function);
1172 return MarkAsCall(DefineFixed(result, eax), instr, CANNOT_DEOPTIMIZE_EAGERLY);
1176 LInstruction* LChunkBuilder::DoUnaryMathOperation(HUnaryMathOperation* instr) {
1177 switch (instr->op()) {
1178 case kMathFloor: return DoMathFloor(instr);
1179 case kMathRound: return DoMathRound(instr);
1180 case kMathFround: return DoMathFround(instr);
1181 case kMathAbs: return DoMathAbs(instr);
1182 case kMathLog: return DoMathLog(instr);
1183 case kMathExp: return DoMathExp(instr);
1184 case kMathSqrt: return DoMathSqrt(instr);
1185 case kMathPowHalf: return DoMathPowHalf(instr);
1186 case kMathClz32: return DoMathClz32(instr);
1194 LInstruction* LChunkBuilder::DoMathFloor(HUnaryMathOperation* instr) {
1195 LOperand* input = UseRegisterAtStart(instr->value());
1196 LMathFloor* result = new(zone()) LMathFloor(input);
1197 return AssignEnvironment(DefineAsRegister(result));
1201 LInstruction* LChunkBuilder::DoMathRound(HUnaryMathOperation* instr) {
1202 LOperand* input = UseRegisterAtStart(instr->value());
1203 LInstruction* result = DefineAsRegister(new (zone()) LMathRound(input));
1204 return AssignEnvironment(result);
1208 LInstruction* LChunkBuilder::DoMathFround(HUnaryMathOperation* instr) {
1209 LOperand* input = UseRegister(instr->value());
1210 LMathFround* result = new (zone()) LMathFround(input);
1211 return DefineSameAsFirst(result);
1215 LInstruction* LChunkBuilder::DoMathAbs(HUnaryMathOperation* instr) {
1216 LOperand* context = UseAny(instr->context()); // Deferred use.
1217 LOperand* input = UseRegisterAtStart(instr->value());
1218 LInstruction* result =
1219 DefineSameAsFirst(new(zone()) LMathAbs(context, input));
1220 Representation r = instr->value()->representation();
1221 if (!r.IsDouble() && !r.IsSmiOrInteger32()) result = AssignPointerMap(result);
1222 if (!r.IsDouble()) result = AssignEnvironment(result);
1227 LInstruction* LChunkBuilder::DoMathLog(HUnaryMathOperation* instr) {
1228 DCHECK(instr->representation().IsDouble());
1229 DCHECK(instr->value()->representation().IsDouble());
1230 LOperand* input = UseRegisterAtStart(instr->value());
1231 return MarkAsCall(DefineSameAsFirst(new(zone()) LMathLog(input)), instr);
1235 LInstruction* LChunkBuilder::DoMathClz32(HUnaryMathOperation* instr) {
1236 LOperand* input = UseRegisterAtStart(instr->value());
1237 LMathClz32* result = new(zone()) LMathClz32(input);
1238 return DefineAsRegister(result);
1242 LInstruction* LChunkBuilder::DoMathExp(HUnaryMathOperation* instr) {
1243 DCHECK(instr->representation().IsDouble());
1244 DCHECK(instr->value()->representation().IsDouble());
1245 LOperand* value = UseRegisterAtStart(instr->value());
1246 LOperand* temp1 = FixedTemp(ecx);
1247 LOperand* temp2 = FixedTemp(edx);
1248 LMathExp* result = new(zone()) LMathExp(value, temp1, temp2);
1249 return MarkAsCall(DefineSameAsFirst(result), instr);
1253 LInstruction* LChunkBuilder::DoMathSqrt(HUnaryMathOperation* instr) {
1254 LOperand* input = UseRegisterAtStart(instr->value());
1255 LOperand* temp1 = FixedTemp(ecx);
1256 LOperand* temp2 = FixedTemp(edx);
1257 LMathSqrt* result = new(zone()) LMathSqrt(input, temp1, temp2);
1258 return MarkAsCall(DefineSameAsFirst(result), instr);
1262 LInstruction* LChunkBuilder::DoMathPowHalf(HUnaryMathOperation* instr) {
1263 LOperand* input = UseRegisterAtStart(instr->value());
1264 LMathPowHalf* result = new (zone()) LMathPowHalf(input);
1265 return DefineSameAsFirst(result);
1269 LInstruction* LChunkBuilder::DoCallNew(HCallNew* instr) {
1270 LOperand* context = UseFixed(instr->context(), esi);
1271 LOperand* constructor = UseFixed(instr->constructor(), edi);
1272 LCallNew* result = new(zone()) LCallNew(context, constructor);
1273 return MarkAsCall(DefineFixed(result, eax), instr);
1277 LInstruction* LChunkBuilder::DoCallNewArray(HCallNewArray* instr) {
1278 LOperand* context = UseFixed(instr->context(), esi);
1279 LOperand* constructor = UseFixed(instr->constructor(), edi);
1280 LCallNewArray* result = new(zone()) LCallNewArray(context, constructor);
1281 return MarkAsCall(DefineFixed(result, eax), instr);
1285 LInstruction* LChunkBuilder::DoCallFunction(HCallFunction* instr) {
1286 LOperand* context = UseFixed(instr->context(), esi);
1287 LOperand* function = UseFixed(instr->function(), edi);
1288 LCallFunction* call = new(zone()) LCallFunction(context, function);
1289 return MarkAsCall(DefineFixed(call, eax), instr);
1293 LInstruction* LChunkBuilder::DoCallRuntime(HCallRuntime* instr) {
1294 LOperand* context = UseFixed(instr->context(), esi);
1295 return MarkAsCall(DefineFixed(new(zone()) LCallRuntime(context), eax), instr);
1299 LInstruction* LChunkBuilder::DoRor(HRor* instr) {
1300 return DoShift(Token::ROR, instr);
1304 LInstruction* LChunkBuilder::DoShr(HShr* instr) {
1305 return DoShift(Token::SHR, instr);
1309 LInstruction* LChunkBuilder::DoSar(HSar* instr) {
1310 return DoShift(Token::SAR, instr);
1314 LInstruction* LChunkBuilder::DoShl(HShl* instr) {
1315 return DoShift(Token::SHL, instr);
1319 LInstruction* LChunkBuilder::DoBitwise(HBitwise* instr) {
1320 if (instr->representation().IsSmiOrInteger32()) {
1321 DCHECK(instr->left()->representation().Equals(instr->representation()));
1322 DCHECK(instr->right()->representation().Equals(instr->representation()));
1323 DCHECK(instr->CheckFlag(HValue::kTruncatingToInt32));
1325 LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand());
1326 LOperand* right = UseOrConstantAtStart(instr->BetterRightOperand());
1327 return DefineSameAsFirst(new(zone()) LBitI(left, right));
1329 return DoArithmeticT(instr->op(), instr);
1334 LInstruction* LChunkBuilder::DoDivByPowerOf2I(HDiv* instr) {
1335 DCHECK(instr->representation().IsSmiOrInteger32());
1336 DCHECK(instr->left()->representation().Equals(instr->representation()));
1337 DCHECK(instr->right()->representation().Equals(instr->representation()));
1338 LOperand* dividend = UseRegister(instr->left());
1339 int32_t divisor = instr->right()->GetInteger32Constant();
1340 LInstruction* result = DefineAsRegister(new(zone()) LDivByPowerOf2I(
1341 dividend, divisor));
1342 if ((instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) ||
1343 (instr->CheckFlag(HValue::kCanOverflow) && divisor == -1) ||
1344 (!instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32) &&
1345 divisor != 1 && divisor != -1)) {
1346 result = AssignEnvironment(result);
1352 LInstruction* LChunkBuilder::DoDivByConstI(HDiv* instr) {
1353 DCHECK(instr->representation().IsInteger32());
1354 DCHECK(instr->left()->representation().Equals(instr->representation()));
1355 DCHECK(instr->right()->representation().Equals(instr->representation()));
1356 LOperand* dividend = UseRegister(instr->left());
1357 int32_t divisor = instr->right()->GetInteger32Constant();
1358 LOperand* temp1 = FixedTemp(eax);
1359 LOperand* temp2 = FixedTemp(edx);
1360 LInstruction* result = DefineFixed(new(zone()) LDivByConstI(
1361 dividend, divisor, temp1, temp2), edx);
1363 (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) ||
1364 !instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32)) {
1365 result = AssignEnvironment(result);
1371 LInstruction* LChunkBuilder::DoDivI(HDiv* instr) {
1372 DCHECK(instr->representation().IsSmiOrInteger32());
1373 DCHECK(instr->left()->representation().Equals(instr->representation()));
1374 DCHECK(instr->right()->representation().Equals(instr->representation()));
1375 LOperand* dividend = UseFixed(instr->left(), eax);
1376 LOperand* divisor = UseRegister(instr->right());
1377 LOperand* temp = FixedTemp(edx);
1378 LInstruction* result = DefineFixed(new(zone()) LDivI(
1379 dividend, divisor, temp), eax);
1380 if (instr->CheckFlag(HValue::kCanBeDivByZero) ||
1381 instr->CheckFlag(HValue::kBailoutOnMinusZero) ||
1382 instr->CheckFlag(HValue::kCanOverflow) ||
1383 !instr->CheckFlag(HValue::kAllUsesTruncatingToInt32)) {
1384 result = AssignEnvironment(result);
1390 LInstruction* LChunkBuilder::DoDiv(HDiv* instr) {
1391 if (instr->representation().IsSmiOrInteger32()) {
1392 if (instr->RightIsPowerOf2()) {
1393 return DoDivByPowerOf2I(instr);
1394 } else if (instr->right()->IsConstant()) {
1395 return DoDivByConstI(instr);
1397 return DoDivI(instr);
1399 } else if (instr->representation().IsDouble()) {
1400 return DoArithmeticD(Token::DIV, instr);
1402 return DoArithmeticT(Token::DIV, instr);
1407 LInstruction* LChunkBuilder::DoFlooringDivByPowerOf2I(HMathFloorOfDiv* instr) {
1408 LOperand* dividend = UseRegisterAtStart(instr->left());
1409 int32_t divisor = instr->right()->GetInteger32Constant();
1410 LInstruction* result = DefineSameAsFirst(new(zone()) LFlooringDivByPowerOf2I(
1411 dividend, divisor));
1412 if ((instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) ||
1413 (instr->CheckFlag(HValue::kLeftCanBeMinInt) && divisor == -1)) {
1414 result = AssignEnvironment(result);
1420 LInstruction* LChunkBuilder::DoFlooringDivByConstI(HMathFloorOfDiv* instr) {
1421 DCHECK(instr->representation().IsInteger32());
1422 DCHECK(instr->left()->representation().Equals(instr->representation()));
1423 DCHECK(instr->right()->representation().Equals(instr->representation()));
1424 LOperand* dividend = UseRegister(instr->left());
1425 int32_t divisor = instr->right()->GetInteger32Constant();
1426 LOperand* temp1 = FixedTemp(eax);
1427 LOperand* temp2 = FixedTemp(edx);
1429 ((divisor > 0 && !instr->CheckFlag(HValue::kLeftCanBeNegative)) ||
1430 (divisor < 0 && !instr->CheckFlag(HValue::kLeftCanBePositive))) ?
1431 NULL : TempRegister();
1432 LInstruction* result =
1433 DefineFixed(new(zone()) LFlooringDivByConstI(dividend,
1440 (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0)) {
1441 result = AssignEnvironment(result);
1447 LInstruction* LChunkBuilder::DoFlooringDivI(HMathFloorOfDiv* instr) {
1448 DCHECK(instr->representation().IsSmiOrInteger32());
1449 DCHECK(instr->left()->representation().Equals(instr->representation()));
1450 DCHECK(instr->right()->representation().Equals(instr->representation()));
1451 LOperand* dividend = UseFixed(instr->left(), eax);
1452 LOperand* divisor = UseRegister(instr->right());
1453 LOperand* temp = FixedTemp(edx);
1454 LInstruction* result = DefineFixed(new(zone()) LFlooringDivI(
1455 dividend, divisor, temp), eax);
1456 if (instr->CheckFlag(HValue::kCanBeDivByZero) ||
1457 instr->CheckFlag(HValue::kBailoutOnMinusZero) ||
1458 instr->CheckFlag(HValue::kCanOverflow)) {
1459 result = AssignEnvironment(result);
1465 LInstruction* LChunkBuilder::DoMathFloorOfDiv(HMathFloorOfDiv* instr) {
1466 if (instr->RightIsPowerOf2()) {
1467 return DoFlooringDivByPowerOf2I(instr);
1468 } else if (instr->right()->IsConstant()) {
1469 return DoFlooringDivByConstI(instr);
1471 return DoFlooringDivI(instr);
1476 LInstruction* LChunkBuilder::DoModByPowerOf2I(HMod* instr) {
1477 DCHECK(instr->representation().IsSmiOrInteger32());
1478 DCHECK(instr->left()->representation().Equals(instr->representation()));
1479 DCHECK(instr->right()->representation().Equals(instr->representation()));
1480 LOperand* dividend = UseRegisterAtStart(instr->left());
1481 int32_t divisor = instr->right()->GetInteger32Constant();
1482 LInstruction* result = DefineSameAsFirst(new(zone()) LModByPowerOf2I(
1483 dividend, divisor));
1484 if (instr->CheckFlag(HValue::kLeftCanBeNegative) &&
1485 instr->CheckFlag(HValue::kBailoutOnMinusZero)) {
1486 result = AssignEnvironment(result);
1492 LInstruction* LChunkBuilder::DoModByConstI(HMod* instr) {
1493 DCHECK(instr->representation().IsSmiOrInteger32());
1494 DCHECK(instr->left()->representation().Equals(instr->representation()));
1495 DCHECK(instr->right()->representation().Equals(instr->representation()));
1496 LOperand* dividend = UseRegister(instr->left());
1497 int32_t divisor = instr->right()->GetInteger32Constant();
1498 LOperand* temp1 = FixedTemp(eax);
1499 LOperand* temp2 = FixedTemp(edx);
1500 LInstruction* result = DefineFixed(new(zone()) LModByConstI(
1501 dividend, divisor, temp1, temp2), eax);
1502 if (divisor == 0 || instr->CheckFlag(HValue::kBailoutOnMinusZero)) {
1503 result = AssignEnvironment(result);
1509 LInstruction* LChunkBuilder::DoModI(HMod* instr) {
1510 DCHECK(instr->representation().IsSmiOrInteger32());
1511 DCHECK(instr->left()->representation().Equals(instr->representation()));
1512 DCHECK(instr->right()->representation().Equals(instr->representation()));
1513 LOperand* dividend = UseFixed(instr->left(), eax);
1514 LOperand* divisor = UseRegister(instr->right());
1515 LOperand* temp = FixedTemp(edx);
1516 LInstruction* result = DefineFixed(new(zone()) LModI(
1517 dividend, divisor, temp), edx);
1518 if (instr->CheckFlag(HValue::kCanBeDivByZero) ||
1519 instr->CheckFlag(HValue::kBailoutOnMinusZero)) {
1520 result = AssignEnvironment(result);
1526 LInstruction* LChunkBuilder::DoMod(HMod* instr) {
1527 if (instr->representation().IsSmiOrInteger32()) {
1528 if (instr->RightIsPowerOf2()) {
1529 return DoModByPowerOf2I(instr);
1530 } else if (instr->right()->IsConstant()) {
1531 return DoModByConstI(instr);
1533 return DoModI(instr);
1535 } else if (instr->representation().IsDouble()) {
1536 return DoArithmeticD(Token::MOD, instr);
1538 return DoArithmeticT(Token::MOD, instr);
1543 LInstruction* LChunkBuilder::DoMul(HMul* instr) {
1544 if (instr->representation().IsSmiOrInteger32()) {
1545 DCHECK(instr->left()->representation().Equals(instr->representation()));
1546 DCHECK(instr->right()->representation().Equals(instr->representation()));
1547 LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand());
1548 LOperand* right = UseOrConstant(instr->BetterRightOperand());
1549 LOperand* temp = NULL;
1550 if (instr->CheckFlag(HValue::kBailoutOnMinusZero)) {
1551 temp = TempRegister();
1553 LMulI* mul = new(zone()) LMulI(left, right, temp);
1554 if (instr->CheckFlag(HValue::kCanOverflow) ||
1555 instr->CheckFlag(HValue::kBailoutOnMinusZero)) {
1556 AssignEnvironment(mul);
1558 return DefineSameAsFirst(mul);
1559 } else if (instr->representation().IsDouble()) {
1560 return DoArithmeticD(Token::MUL, instr);
1562 return DoArithmeticT(Token::MUL, instr);
1567 LInstruction* LChunkBuilder::DoSub(HSub* instr) {
1568 if (instr->representation().IsSmiOrInteger32()) {
1569 DCHECK(instr->left()->representation().Equals(instr->representation()));
1570 DCHECK(instr->right()->representation().Equals(instr->representation()));
1571 LOperand* left = UseRegisterAtStart(instr->left());
1572 LOperand* right = UseOrConstantAtStart(instr->right());
1573 LSubI* sub = new(zone()) LSubI(left, right);
1574 LInstruction* result = DefineSameAsFirst(sub);
1575 if (instr->CheckFlag(HValue::kCanOverflow)) {
1576 result = AssignEnvironment(result);
1579 } else if (instr->representation().IsDouble()) {
1580 return DoArithmeticD(Token::SUB, instr);
1582 return DoArithmeticT(Token::SUB, instr);
1587 LInstruction* LChunkBuilder::DoAdd(HAdd* instr) {
1588 if (instr->representation().IsSmiOrInteger32()) {
1589 DCHECK(instr->left()->representation().Equals(instr->representation()));
1590 DCHECK(instr->right()->representation().Equals(instr->representation()));
1591 // Check to see if it would be advantageous to use an lea instruction rather
1592 // than an add. This is the case when no overflow check is needed and there
1593 // are multiple uses of the add's inputs, so using a 3-register add will
1594 // preserve all input values for later uses.
1595 bool use_lea = LAddI::UseLea(instr);
1596 LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand());
1597 HValue* right_candidate = instr->BetterRightOperand();
1598 LOperand* right = use_lea
1599 ? UseRegisterOrConstantAtStart(right_candidate)
1600 : UseOrConstantAtStart(right_candidate);
1601 LAddI* add = new(zone()) LAddI(left, right);
1602 bool can_overflow = instr->CheckFlag(HValue::kCanOverflow);
1603 LInstruction* result = use_lea
1604 ? DefineAsRegister(add)
1605 : DefineSameAsFirst(add);
1607 result = AssignEnvironment(result);
1610 } else if (instr->representation().IsDouble()) {
1611 return DoArithmeticD(Token::ADD, instr);
1612 } else if (instr->representation().IsExternal()) {
1613 DCHECK(instr->left()->representation().IsExternal());
1614 DCHECK(instr->right()->representation().IsInteger32());
1615 DCHECK(!instr->CheckFlag(HValue::kCanOverflow));
1616 bool use_lea = LAddI::UseLea(instr);
1617 LOperand* left = UseRegisterAtStart(instr->left());
1618 HValue* right_candidate = instr->right();
1619 LOperand* right = use_lea
1620 ? UseRegisterOrConstantAtStart(right_candidate)
1621 : UseOrConstantAtStart(right_candidate);
1622 LAddI* add = new(zone()) LAddI(left, right);
1623 LInstruction* result = use_lea
1624 ? DefineAsRegister(add)
1625 : DefineSameAsFirst(add);
1628 return DoArithmeticT(Token::ADD, instr);
1633 LInstruction* LChunkBuilder::DoMathMinMax(HMathMinMax* instr) {
1634 LOperand* left = NULL;
1635 LOperand* right = NULL;
1636 LOperand* scratch = TempRegister();
1638 if (instr->representation().IsSmiOrInteger32()) {
1639 DCHECK(instr->left()->representation().Equals(instr->representation()));
1640 DCHECK(instr->right()->representation().Equals(instr->representation()));
1641 left = UseRegisterAtStart(instr->BetterLeftOperand());
1642 right = UseOrConstantAtStart(instr->BetterRightOperand());
1644 DCHECK(instr->representation().IsDouble());
1645 DCHECK(instr->left()->representation().IsDouble());
1646 DCHECK(instr->right()->representation().IsDouble());
1647 left = UseRegisterAtStart(instr->left());
1648 right = UseRegisterAtStart(instr->right());
1650 LMathMinMax* minmax = new (zone()) LMathMinMax(left, right, scratch);
1651 return DefineSameAsFirst(minmax);
1655 LInstruction* LChunkBuilder::DoPower(HPower* instr) {
1656 // Unlike ia32, we don't have a MathPowStub and directly call c function.
1657 DCHECK(instr->representation().IsDouble());
1658 DCHECK(instr->left()->representation().IsDouble());
1659 LOperand* left = UseRegisterAtStart(instr->left());
1660 LOperand* right = UseRegisterAtStart(instr->right());
1661 LPower* result = new (zone()) LPower(left, right);
1662 return MarkAsCall(DefineSameAsFirst(result), instr);
1666 LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) {
1667 DCHECK(instr->left()->representation().IsSmiOrTagged());
1668 DCHECK(instr->right()->representation().IsSmiOrTagged());
1669 LOperand* context = UseFixed(instr->context(), esi);
1670 LOperand* left = UseFixed(instr->left(), edx);
1671 LOperand* right = UseFixed(instr->right(), eax);
1672 LCmpT* result = new(zone()) LCmpT(context, left, right);
1673 return MarkAsCall(DefineFixed(result, eax), instr);
1677 LInstruction* LChunkBuilder::DoCompareNumericAndBranch(
1678 HCompareNumericAndBranch* instr) {
1679 Representation r = instr->representation();
1680 if (r.IsSmiOrInteger32()) {
1681 DCHECK(instr->left()->representation().Equals(r));
1682 DCHECK(instr->right()->representation().Equals(r));
1683 LOperand* left = UseRegisterOrConstantAtStart(instr->left());
1684 LOperand* right = UseOrConstantAtStart(instr->right());
1685 return new(zone()) LCompareNumericAndBranch(left, right);
1687 DCHECK(r.IsDouble());
1688 DCHECK(instr->left()->representation().IsDouble());
1689 DCHECK(instr->right()->representation().IsDouble());
1692 if (CanBeImmediateConstant(instr->left()) &&
1693 CanBeImmediateConstant(instr->right())) {
1694 // The code generator requires either both inputs to be constant
1695 // operands, or neither.
1696 left = UseConstant(instr->left());
1697 right = UseConstant(instr->right());
1699 left = UseRegisterAtStart(instr->left());
1700 right = UseRegisterAtStart(instr->right());
1702 return new(zone()) LCompareNumericAndBranch(left, right);
1707 LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch(
1708 HCompareObjectEqAndBranch* instr) {
1709 LOperand* left = UseRegisterAtStart(instr->left());
1710 LOperand* right = UseOrConstantAtStart(instr->right());
1711 return new(zone()) LCmpObjectEqAndBranch(left, right);
1715 LInstruction* LChunkBuilder::DoCompareHoleAndBranch(
1716 HCompareHoleAndBranch* instr) {
1717 LOperand* value = UseRegisterAtStart(instr->value());
1718 return new(zone()) LCmpHoleAndBranch(value);
1722 LInstruction* LChunkBuilder::DoCompareMinusZeroAndBranch(
1723 HCompareMinusZeroAndBranch* instr) {
1724 LOperand* value = UseRegisterAtStart(instr->value());
1725 return new (zone()) LCompareMinusZeroAndBranch(value);
1729 LInstruction* LChunkBuilder::DoIsObjectAndBranch(HIsObjectAndBranch* instr) {
1730 DCHECK(instr->value()->representation().IsSmiOrTagged());
1731 LOperand* temp = TempRegister();
1732 return new(zone()) LIsObjectAndBranch(UseRegister(instr->value()), temp);
1736 LInstruction* LChunkBuilder::DoIsStringAndBranch(HIsStringAndBranch* instr) {
1737 DCHECK(instr->value()->representation().IsTagged());
1738 LOperand* temp = TempRegister();
1739 return new(zone()) LIsStringAndBranch(UseRegister(instr->value()), temp);
1743 LInstruction* LChunkBuilder::DoIsSmiAndBranch(HIsSmiAndBranch* instr) {
1744 DCHECK(instr->value()->representation().IsTagged());
1745 return new(zone()) LIsSmiAndBranch(Use(instr->value()));
1749 LInstruction* LChunkBuilder::DoIsUndetectableAndBranch(
1750 HIsUndetectableAndBranch* instr) {
1751 DCHECK(instr->value()->representation().IsTagged());
1752 return new(zone()) LIsUndetectableAndBranch(
1753 UseRegisterAtStart(instr->value()), TempRegister());
1757 LInstruction* LChunkBuilder::DoStringCompareAndBranch(
1758 HStringCompareAndBranch* instr) {
1759 DCHECK(instr->left()->representation().IsTagged());
1760 DCHECK(instr->right()->representation().IsTagged());
1761 LOperand* context = UseFixed(instr->context(), esi);
1762 LOperand* left = UseFixed(instr->left(), edx);
1763 LOperand* right = UseFixed(instr->right(), eax);
1765 LStringCompareAndBranch* result = new(zone())
1766 LStringCompareAndBranch(context, left, right);
1768 return MarkAsCall(result, instr);
1772 LInstruction* LChunkBuilder::DoHasInstanceTypeAndBranch(
1773 HHasInstanceTypeAndBranch* instr) {
1774 DCHECK(instr->value()->representation().IsTagged());
1775 return new(zone()) LHasInstanceTypeAndBranch(
1776 UseRegisterAtStart(instr->value()),
1781 LInstruction* LChunkBuilder::DoGetCachedArrayIndex(
1782 HGetCachedArrayIndex* instr) {
1783 DCHECK(instr->value()->representation().IsTagged());
1784 LOperand* value = UseRegisterAtStart(instr->value());
1786 return DefineAsRegister(new(zone()) LGetCachedArrayIndex(value));
1790 LInstruction* LChunkBuilder::DoHasCachedArrayIndexAndBranch(
1791 HHasCachedArrayIndexAndBranch* instr) {
1792 DCHECK(instr->value()->representation().IsTagged());
1793 return new(zone()) LHasCachedArrayIndexAndBranch(
1794 UseRegisterAtStart(instr->value()));
1798 LInstruction* LChunkBuilder::DoClassOfTestAndBranch(
1799 HClassOfTestAndBranch* instr) {
1800 DCHECK(instr->value()->representation().IsTagged());
1801 return new(zone()) LClassOfTestAndBranch(UseRegister(instr->value()),
1807 LInstruction* LChunkBuilder::DoMapEnumLength(HMapEnumLength* instr) {
1808 LOperand* map = UseRegisterAtStart(instr->value());
1809 return DefineAsRegister(new(zone()) LMapEnumLength(map));
1813 LInstruction* LChunkBuilder::DoDateField(HDateField* instr) {
1814 LOperand* date = UseFixed(instr->value(), eax);
1815 LDateField* result =
1816 new(zone()) LDateField(date, FixedTemp(ecx), instr->index());
1817 return MarkAsCall(DefineFixed(result, eax), instr, CAN_DEOPTIMIZE_EAGERLY);
1821 LInstruction* LChunkBuilder::DoSeqStringGetChar(HSeqStringGetChar* instr) {
1822 LOperand* string = UseRegisterAtStart(instr->string());
1823 LOperand* index = UseRegisterOrConstantAtStart(instr->index());
1824 return DefineAsRegister(new(zone()) LSeqStringGetChar(string, index));
1828 LOperand* LChunkBuilder::GetSeqStringSetCharOperand(HSeqStringSetChar* instr) {
1829 if (instr->encoding() == String::ONE_BYTE_ENCODING) {
1830 if (FLAG_debug_code) {
1831 return UseFixed(instr->value(), eax);
1833 return UseFixedOrConstant(instr->value(), eax);
1836 if (FLAG_debug_code) {
1837 return UseRegisterAtStart(instr->value());
1839 return UseRegisterOrConstantAtStart(instr->value());
1845 LInstruction* LChunkBuilder::DoSeqStringSetChar(HSeqStringSetChar* instr) {
1846 LOperand* string = UseRegisterAtStart(instr->string());
1847 LOperand* index = FLAG_debug_code
1848 ? UseRegisterAtStart(instr->index())
1849 : UseRegisterOrConstantAtStart(instr->index());
1850 LOperand* value = GetSeqStringSetCharOperand(instr);
1851 LOperand* context = FLAG_debug_code ? UseFixed(instr->context(), esi) : NULL;
1852 LInstruction* result = new(zone()) LSeqStringSetChar(context, string,
1854 if (FLAG_debug_code) {
1855 result = MarkAsCall(result, instr);
1861 LInstruction* LChunkBuilder::DoBoundsCheck(HBoundsCheck* instr) {
1862 if (!FLAG_debug_code && instr->skip_check()) return NULL;
1863 LOperand* index = UseRegisterOrConstantAtStart(instr->index());
1864 LOperand* length = !index->IsConstantOperand()
1865 ? UseOrConstantAtStart(instr->length())
1866 : UseAtStart(instr->length());
1867 LInstruction* result = new(zone()) LBoundsCheck(index, length);
1868 if (!FLAG_debug_code || !instr->skip_check()) {
1869 result = AssignEnvironment(result);
1875 LInstruction* LChunkBuilder::DoBoundsCheckBaseIndexInformation(
1876 HBoundsCheckBaseIndexInformation* instr) {
1882 LInstruction* LChunkBuilder::DoAbnormalExit(HAbnormalExit* instr) {
1883 // The control instruction marking the end of a block that completed
1884 // abruptly (e.g., threw an exception). There is nothing specific to do.
1889 LInstruction* LChunkBuilder::DoUseConst(HUseConst* instr) {
1894 LInstruction* LChunkBuilder::DoForceRepresentation(HForceRepresentation* bad) {
1895 // All HForceRepresentation instructions should be eliminated in the
1896 // representation change phase of Hydrogen.
1902 LInstruction* LChunkBuilder::DoChange(HChange* instr) {
1903 Representation from = instr->from();
1904 Representation to = instr->to();
1905 HValue* val = instr->value();
1907 if (to.IsTagged()) {
1908 LOperand* value = UseRegister(val);
1909 return DefineSameAsFirst(new(zone()) LDummyUse(value));
1911 from = Representation::Tagged();
1913 if (from.IsTagged()) {
1914 if (to.IsDouble()) {
1915 LOperand* value = UseRegister(val);
1916 LOperand* temp = TempRegister();
1917 LInstruction* result =
1918 DefineAsRegister(new(zone()) LNumberUntagD(value, temp));
1919 if (!val->representation().IsSmi()) result = AssignEnvironment(result);
1921 } else if (to.IsSmi()) {
1922 LOperand* value = UseRegister(val);
1923 if (val->type().IsSmi()) {
1924 return DefineSameAsFirst(new(zone()) LDummyUse(value));
1926 return AssignEnvironment(DefineSameAsFirst(new(zone()) LCheckSmi(value)));
1928 DCHECK(to.IsInteger32());
1929 if (val->type().IsSmi() || val->representation().IsSmi()) {
1930 LOperand* value = UseRegister(val);
1931 return DefineSameAsFirst(new(zone()) LSmiUntag(value, false));
1933 LOperand* value = UseRegister(val);
1934 LInstruction* result = DefineSameAsFirst(new(zone()) LTaggedToI(value));
1935 if (!val->representation().IsSmi()) result = AssignEnvironment(result);
1939 } else if (from.IsDouble()) {
1940 if (to.IsTagged()) {
1941 info()->MarkAsDeferredCalling();
1942 LOperand* value = UseRegisterAtStart(val);
1943 LOperand* temp = FLAG_inline_new ? TempRegister() : NULL;
1944 LUnallocated* result_temp = TempRegister();
1945 LNumberTagD* result = new(zone()) LNumberTagD(value, temp);
1946 return AssignPointerMap(Define(result, result_temp));
1947 } else if (to.IsSmi()) {
1948 LOperand* value = UseRegister(val);
1949 return AssignEnvironment(
1950 DefineAsRegister(new(zone()) LDoubleToSmi(value)));
1952 DCHECK(to.IsInteger32());
1953 bool truncating = instr->CanTruncateToInt32();
1954 LOperand* value = UseRegister(val);
1955 LInstruction* result = DefineAsRegister(new(zone()) LDoubleToI(value));
1956 if (!truncating) result = AssignEnvironment(result);
1959 } else if (from.IsInteger32()) {
1960 info()->MarkAsDeferredCalling();
1961 if (to.IsTagged()) {
1962 if (!instr->CheckFlag(HValue::kCanOverflow)) {
1963 LOperand* value = UseRegister(val);
1964 return DefineSameAsFirst(new(zone()) LSmiTag(value));
1965 } else if (val->CheckFlag(HInstruction::kUint32)) {
1966 LOperand* value = UseRegister(val);
1967 LOperand* temp = TempRegister();
1968 LNumberTagU* result = new(zone()) LNumberTagU(value, temp);
1969 return AssignPointerMap(DefineSameAsFirst(result));
1971 LOperand* value = UseRegister(val);
1972 LOperand* temp = TempRegister();
1973 LNumberTagI* result = new(zone()) LNumberTagI(value, temp);
1974 return AssignPointerMap(DefineSameAsFirst(result));
1976 } else if (to.IsSmi()) {
1977 LOperand* value = UseRegister(val);
1978 LInstruction* result = DefineSameAsFirst(new(zone()) LSmiTag(value));
1979 if (instr->CheckFlag(HValue::kCanOverflow)) {
1980 result = AssignEnvironment(result);
1984 DCHECK(to.IsDouble());
1985 if (val->CheckFlag(HInstruction::kUint32)) {
1986 return DefineAsRegister(new(zone()) LUint32ToDouble(UseRegister(val)));
1988 return DefineAsRegister(new(zone()) LInteger32ToDouble(Use(val)));
1997 LInstruction* LChunkBuilder::DoCheckHeapObject(HCheckHeapObject* instr) {
1998 LOperand* value = UseAtStart(instr->value());
1999 LInstruction* result = new(zone()) LCheckNonSmi(value);
2000 if (!instr->value()->type().IsHeapObject()) {
2001 result = AssignEnvironment(result);
2007 LInstruction* LChunkBuilder::DoCheckSmi(HCheckSmi* instr) {
2008 LOperand* value = UseRegisterAtStart(instr->value());
2009 return AssignEnvironment(new(zone()) LCheckSmi(value));
2013 LInstruction* LChunkBuilder::DoCheckInstanceType(HCheckInstanceType* instr) {
2014 LOperand* value = UseRegisterAtStart(instr->value());
2015 LOperand* temp = TempRegister();
2016 LCheckInstanceType* result = new(zone()) LCheckInstanceType(value, temp);
2017 return AssignEnvironment(result);
2021 LInstruction* LChunkBuilder::DoCheckValue(HCheckValue* instr) {
2022 // If the object is in new space, we'll emit a global cell compare and so
2023 // want the value in a register. If the object gets promoted before we
2024 // emit code, we will still get the register but will do an immediate
2025 // compare instead of the cell compare. This is safe.
2026 LOperand* value = instr->object_in_new_space()
2027 ? UseRegisterAtStart(instr->value()) : UseAtStart(instr->value());
2028 return AssignEnvironment(new(zone()) LCheckValue(value));
2032 LInstruction* LChunkBuilder::DoCheckMaps(HCheckMaps* instr) {
2033 if (instr->IsStabilityCheck()) return new(zone()) LCheckMaps;
2034 LOperand* value = UseRegisterAtStart(instr->value());
2035 LInstruction* result = AssignEnvironment(new(zone()) LCheckMaps(value));
2036 if (instr->HasMigrationTarget()) {
2037 info()->MarkAsDeferredCalling();
2038 result = AssignPointerMap(result);
2044 LInstruction* LChunkBuilder::DoClampToUint8(HClampToUint8* instr) {
2045 HValue* value = instr->value();
2046 Representation input_rep = value->representation();
2047 if (input_rep.IsDouble()) {
2048 LOperand* reg = UseRegister(value);
2049 return DefineFixed(new (zone()) LClampDToUint8(reg), eax);
2050 } else if (input_rep.IsInteger32()) {
2051 LOperand* reg = UseFixed(value, eax);
2052 return DefineFixed(new(zone()) LClampIToUint8(reg), eax);
2054 DCHECK(input_rep.IsSmiOrTagged());
2055 LOperand* value = UseRegister(instr->value());
2056 LClampTToUint8NoSSE2* res =
2057 new(zone()) LClampTToUint8NoSSE2(value, TempRegister(),
2058 TempRegister(), TempRegister());
2059 return AssignEnvironment(DefineFixed(res, ecx));
2064 LInstruction* LChunkBuilder::DoDoubleBits(HDoubleBits* instr) {
2065 HValue* value = instr->value();
2066 DCHECK(value->representation().IsDouble());
2067 return DefineAsRegister(new(zone()) LDoubleBits(UseRegister(value)));
2071 LInstruction* LChunkBuilder::DoConstructDouble(HConstructDouble* instr) {
2072 LOperand* lo = UseRegister(instr->lo());
2073 LOperand* hi = UseRegister(instr->hi());
2074 return DefineAsRegister(new(zone()) LConstructDouble(hi, lo));
2078 LInstruction* LChunkBuilder::DoReturn(HReturn* instr) {
2079 LOperand* context = info()->IsStub() ? UseFixed(instr->context(), esi) : NULL;
2080 LOperand* parameter_count = UseRegisterOrConstant(instr->parameter_count());
2081 return new(zone()) LReturn(
2082 UseFixed(instr->value(), eax), context, parameter_count);
2086 LInstruction* LChunkBuilder::DoConstant(HConstant* instr) {
2087 Representation r = instr->representation();
2089 return DefineAsRegister(new(zone()) LConstantS);
2090 } else if (r.IsInteger32()) {
2091 return DefineAsRegister(new(zone()) LConstantI);
2092 } else if (r.IsDouble()) {
2093 return DefineAsRegister(new (zone()) LConstantD);
2094 } else if (r.IsExternal()) {
2095 return DefineAsRegister(new(zone()) LConstantE);
2096 } else if (r.IsTagged()) {
2097 return DefineAsRegister(new(zone()) LConstantT);
2105 LInstruction* LChunkBuilder::DoLoadGlobalCell(HLoadGlobalCell* instr) {
2106 LLoadGlobalCell* result = new(zone()) LLoadGlobalCell;
2107 return instr->RequiresHoleCheck()
2108 ? AssignEnvironment(DefineAsRegister(result))
2109 : DefineAsRegister(result);
2113 LInstruction* LChunkBuilder::DoLoadGlobalGeneric(HLoadGlobalGeneric* instr) {
2114 LOperand* context = UseFixed(instr->context(), esi);
2115 LOperand* global_object =
2116 UseFixed(instr->global_object(), LoadDescriptor::ReceiverRegister());
2117 LOperand* vector = NULL;
2118 if (FLAG_vector_ics) {
2119 vector = FixedTemp(VectorLoadICDescriptor::VectorRegister());
2122 LLoadGlobalGeneric* result =
2123 new(zone()) LLoadGlobalGeneric(context, global_object, vector);
2124 return MarkAsCall(DefineFixed(result, eax), instr);
2128 LInstruction* LChunkBuilder::DoStoreGlobalCell(HStoreGlobalCell* instr) {
2129 LStoreGlobalCell* result =
2130 new(zone()) LStoreGlobalCell(UseRegister(instr->value()));
2131 return instr->RequiresHoleCheck() ? AssignEnvironment(result) : result;
2135 LInstruction* LChunkBuilder::DoLoadContextSlot(HLoadContextSlot* instr) {
2136 LOperand* context = UseRegisterAtStart(instr->value());
2137 LInstruction* result =
2138 DefineAsRegister(new(zone()) LLoadContextSlot(context));
2139 if (instr->RequiresHoleCheck() && instr->DeoptimizesOnHole()) {
2140 result = AssignEnvironment(result);
2146 LInstruction* LChunkBuilder::DoStoreContextSlot(HStoreContextSlot* instr) {
2149 LOperand* context = UseRegister(instr->context());
2150 if (instr->NeedsWriteBarrier()) {
2151 value = UseTempRegister(instr->value());
2152 temp = TempRegister();
2154 value = UseRegister(instr->value());
2157 LInstruction* result = new(zone()) LStoreContextSlot(context, value, temp);
2158 if (instr->RequiresHoleCheck() && instr->DeoptimizesOnHole()) {
2159 result = AssignEnvironment(result);
2165 LInstruction* LChunkBuilder::DoLoadNamedField(HLoadNamedField* instr) {
2166 LOperand* obj = (instr->access().IsExternalMemory() &&
2167 instr->access().offset() == 0)
2168 ? UseRegisterOrConstantAtStart(instr->object())
2169 : UseRegisterAtStart(instr->object());
2170 return DefineAsRegister(new(zone()) LLoadNamedField(obj));
2174 LInstruction* LChunkBuilder::DoLoadNamedGeneric(HLoadNamedGeneric* instr) {
2175 LOperand* context = UseFixed(instr->context(), esi);
2177 UseFixed(instr->object(), LoadDescriptor::ReceiverRegister());
2178 LOperand* vector = NULL;
2179 if (FLAG_vector_ics) {
2180 vector = FixedTemp(VectorLoadICDescriptor::VectorRegister());
2182 LLoadNamedGeneric* result = new(zone()) LLoadNamedGeneric(
2183 context, object, vector);
2184 return MarkAsCall(DefineFixed(result, eax), instr);
2188 LInstruction* LChunkBuilder::DoLoadFunctionPrototype(
2189 HLoadFunctionPrototype* instr) {
2190 return AssignEnvironment(DefineAsRegister(
2191 new(zone()) LLoadFunctionPrototype(UseRegister(instr->function()),
2196 LInstruction* LChunkBuilder::DoLoadRoot(HLoadRoot* instr) {
2197 return DefineAsRegister(new(zone()) LLoadRoot);
2201 LInstruction* LChunkBuilder::DoLoadKeyed(HLoadKeyed* instr) {
2202 DCHECK(instr->key()->representation().IsSmiOrInteger32());
2203 ElementsKind elements_kind = instr->elements_kind();
2204 bool clobbers_key = ExternalArrayOpRequiresTemp(
2205 instr->key()->representation(), elements_kind);
2206 LOperand* key = clobbers_key
2207 ? UseTempRegister(instr->key())
2208 : UseRegisterOrConstantAtStart(instr->key());
2209 LInstruction* result = NULL;
2211 if (!instr->is_typed_elements()) {
2212 LOperand* obj = UseRegisterAtStart(instr->elements());
2213 result = DefineAsRegister(new(zone()) LLoadKeyed(obj, key));
2216 (instr->representation().IsInteger32() &&
2217 !(IsDoubleOrFloatElementsKind(instr->elements_kind()))) ||
2218 (instr->representation().IsDouble() &&
2219 (IsDoubleOrFloatElementsKind(instr->elements_kind()))));
2220 LOperand* backing_store = UseRegister(instr->elements());
2221 result = DefineAsRegister(new(zone()) LLoadKeyed(backing_store, key));
2224 if ((instr->is_external() || instr->is_fixed_typed_array()) ?
2225 // see LCodeGen::DoLoadKeyedExternalArray
2226 ((instr->elements_kind() == EXTERNAL_UINT32_ELEMENTS ||
2227 instr->elements_kind() == UINT32_ELEMENTS) &&
2228 !instr->CheckFlag(HInstruction::kUint32)) :
2229 // see LCodeGen::DoLoadKeyedFixedDoubleArray and
2230 // LCodeGen::DoLoadKeyedFixedArray
2231 instr->RequiresHoleCheck()) {
2232 result = AssignEnvironment(result);
2238 LInstruction* LChunkBuilder::DoLoadKeyedGeneric(HLoadKeyedGeneric* instr) {
2239 LOperand* context = UseFixed(instr->context(), esi);
2241 UseFixed(instr->object(), LoadDescriptor::ReceiverRegister());
2242 LOperand* key = UseFixed(instr->key(), LoadDescriptor::NameRegister());
2243 LOperand* vector = NULL;
2244 if (FLAG_vector_ics) {
2245 vector = FixedTemp(VectorLoadICDescriptor::VectorRegister());
2247 LLoadKeyedGeneric* result =
2248 new(zone()) LLoadKeyedGeneric(context, object, key, vector);
2249 return MarkAsCall(DefineFixed(result, eax), instr);
2253 LOperand* LChunkBuilder::GetStoreKeyedValueOperand(HStoreKeyed* instr) {
2254 ElementsKind elements_kind = instr->elements_kind();
2256 // Determine if we need a byte register in this case for the value.
2257 bool val_is_fixed_register =
2258 elements_kind == EXTERNAL_INT8_ELEMENTS ||
2259 elements_kind == EXTERNAL_UINT8_ELEMENTS ||
2260 elements_kind == EXTERNAL_UINT8_CLAMPED_ELEMENTS ||
2261 elements_kind == UINT8_ELEMENTS ||
2262 elements_kind == INT8_ELEMENTS ||
2263 elements_kind == UINT8_CLAMPED_ELEMENTS;
2264 if (val_is_fixed_register) {
2265 return UseFixed(instr->value(), eax);
2268 if (IsDoubleOrFloatElementsKind(elements_kind)) {
2269 return UseRegisterAtStart(instr->value());
2272 return UseRegister(instr->value());
2276 LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) {
2277 if (!instr->is_typed_elements()) {
2278 DCHECK(instr->elements()->representation().IsTagged());
2279 DCHECK(instr->key()->representation().IsInteger32() ||
2280 instr->key()->representation().IsSmi());
2282 if (instr->value()->representation().IsDouble()) {
2283 LOperand* object = UseRegisterAtStart(instr->elements());
2284 // For storing double hole, no fp register required.
2285 LOperand* val = instr->IsConstantHoleStore()
2287 : UseRegisterAtStart(instr->value());
2288 LOperand* key = UseRegisterOrConstantAtStart(instr->key());
2289 return new(zone()) LStoreKeyed(object, key, val);
2291 DCHECK(instr->value()->representation().IsSmiOrTagged());
2292 bool needs_write_barrier = instr->NeedsWriteBarrier();
2294 LOperand* obj = UseRegister(instr->elements());
2297 if (needs_write_barrier) {
2298 val = UseTempRegister(instr->value());
2299 key = UseTempRegister(instr->key());
2301 val = UseRegisterOrConstantAtStart(instr->value());
2302 key = UseRegisterOrConstantAtStart(instr->key());
2304 return new(zone()) LStoreKeyed(obj, key, val);
2308 ElementsKind elements_kind = instr->elements_kind();
2310 (instr->value()->representation().IsInteger32() &&
2311 !IsDoubleOrFloatElementsKind(elements_kind)) ||
2312 (instr->value()->representation().IsDouble() &&
2313 IsDoubleOrFloatElementsKind(elements_kind)));
2314 DCHECK((instr->is_fixed_typed_array() &&
2315 instr->elements()->representation().IsTagged()) ||
2316 (instr->is_external() &&
2317 instr->elements()->representation().IsExternal()));
2319 LOperand* backing_store = UseRegister(instr->elements());
2320 LOperand* val = GetStoreKeyedValueOperand(instr);
2321 bool clobbers_key = ExternalArrayOpRequiresTemp(
2322 instr->key()->representation(), elements_kind);
2323 LOperand* key = clobbers_key
2324 ? UseTempRegister(instr->key())
2325 : UseRegisterOrConstantAtStart(instr->key());
2326 return new(zone()) LStoreKeyed(backing_store, key, val);
2330 LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) {
2331 LOperand* context = UseFixed(instr->context(), esi);
2333 UseFixed(instr->object(), StoreDescriptor::ReceiverRegister());
2334 LOperand* key = UseFixed(instr->key(), StoreDescriptor::NameRegister());
2335 LOperand* value = UseFixed(instr->value(), StoreDescriptor::ValueRegister());
2337 DCHECK(instr->object()->representation().IsTagged());
2338 DCHECK(instr->key()->representation().IsTagged());
2339 DCHECK(instr->value()->representation().IsTagged());
2341 LStoreKeyedGeneric* result =
2342 new(zone()) LStoreKeyedGeneric(context, object, key, value);
2343 return MarkAsCall(result, instr);
2347 LInstruction* LChunkBuilder::DoTransitionElementsKind(
2348 HTransitionElementsKind* instr) {
2349 if (IsSimpleMapChangeTransition(instr->from_kind(), instr->to_kind())) {
2350 LOperand* object = UseRegister(instr->object());
2351 LOperand* new_map_reg = TempRegister();
2352 LOperand* temp_reg = TempRegister();
2353 LTransitionElementsKind* result =
2354 new(zone()) LTransitionElementsKind(object, NULL,
2355 new_map_reg, temp_reg);
2358 LOperand* object = UseFixed(instr->object(), eax);
2359 LOperand* context = UseFixed(instr->context(), esi);
2360 LTransitionElementsKind* result =
2361 new(zone()) LTransitionElementsKind(object, context, NULL, NULL);
2362 return MarkAsCall(result, instr);
2367 LInstruction* LChunkBuilder::DoTrapAllocationMemento(
2368 HTrapAllocationMemento* instr) {
2369 LOperand* object = UseRegister(instr->object());
2370 LOperand* temp = TempRegister();
2371 LTrapAllocationMemento* result =
2372 new(zone()) LTrapAllocationMemento(object, temp);
2373 return AssignEnvironment(result);
2377 LInstruction* LChunkBuilder::DoStoreNamedField(HStoreNamedField* instr) {
2378 bool is_in_object = instr->access().IsInobject();
2379 bool is_external_location = instr->access().IsExternalMemory() &&
2380 instr->access().offset() == 0;
2381 bool needs_write_barrier = instr->NeedsWriteBarrier();
2382 bool needs_write_barrier_for_map = instr->has_transition() &&
2383 instr->NeedsWriteBarrierForMap();
2386 if (needs_write_barrier) {
2388 ? UseRegister(instr->object())
2389 : UseTempRegister(instr->object());
2390 } else if (is_external_location) {
2391 DCHECK(!is_in_object);
2392 DCHECK(!needs_write_barrier);
2393 DCHECK(!needs_write_barrier_for_map);
2394 obj = UseRegisterOrConstant(instr->object());
2396 obj = needs_write_barrier_for_map
2397 ? UseRegister(instr->object())
2398 : UseRegisterAtStart(instr->object());
2401 bool can_be_constant = instr->value()->IsConstant() &&
2402 HConstant::cast(instr->value())->NotInNewSpace() &&
2403 !instr->field_representation().IsDouble();
2406 if (instr->field_representation().IsInteger8() ||
2407 instr->field_representation().IsUInteger8()) {
2408 // mov_b requires a byte register (i.e. any of eax, ebx, ecx, edx).
2409 // Just force the value to be in eax and we're safe here.
2410 val = UseFixed(instr->value(), eax);
2411 } else if (needs_write_barrier) {
2412 val = UseTempRegister(instr->value());
2413 } else if (can_be_constant) {
2414 val = UseRegisterOrConstant(instr->value());
2415 } else if (instr->field_representation().IsDouble()) {
2416 val = UseRegisterAtStart(instr->value());
2418 val = UseRegister(instr->value());
2421 // We only need a scratch register if we have a write barrier or we
2422 // have a store into the properties array (not in-object-property).
2423 LOperand* temp = (!is_in_object || needs_write_barrier ||
2424 needs_write_barrier_for_map) ? TempRegister() : NULL;
2426 // We need a temporary register for write barrier of the map field.
2427 LOperand* temp_map = needs_write_barrier_for_map ? TempRegister() : NULL;
2429 return new(zone()) LStoreNamedField(obj, val, temp, temp_map);
2433 LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) {
2434 LOperand* context = UseFixed(instr->context(), esi);
2436 UseFixed(instr->object(), StoreDescriptor::ReceiverRegister());
2437 LOperand* value = UseFixed(instr->value(), StoreDescriptor::ValueRegister());
2439 LStoreNamedGeneric* result =
2440 new(zone()) LStoreNamedGeneric(context, object, value);
2441 return MarkAsCall(result, instr);
2445 LInstruction* LChunkBuilder::DoStringAdd(HStringAdd* instr) {
2446 LOperand* context = UseFixed(instr->context(), esi);
2447 LOperand* left = UseFixed(instr->left(), edx);
2448 LOperand* right = UseFixed(instr->right(), eax);
2449 LStringAdd* string_add = new(zone()) LStringAdd(context, left, right);
2450 return MarkAsCall(DefineFixed(string_add, eax), instr);
2454 LInstruction* LChunkBuilder::DoStringCharCodeAt(HStringCharCodeAt* instr) {
2455 LOperand* string = UseTempRegister(instr->string());
2456 LOperand* index = UseTempRegister(instr->index());
2457 LOperand* context = UseAny(instr->context());
2458 LStringCharCodeAt* result =
2459 new(zone()) LStringCharCodeAt(context, string, index);
2460 return AssignPointerMap(DefineAsRegister(result));
2464 LInstruction* LChunkBuilder::DoStringCharFromCode(HStringCharFromCode* instr) {
2465 LOperand* char_code = UseRegister(instr->value());
2466 LOperand* context = UseAny(instr->context());
2467 LStringCharFromCode* result =
2468 new(zone()) LStringCharFromCode(context, char_code);
2469 return AssignPointerMap(DefineAsRegister(result));
2473 LInstruction* LChunkBuilder::DoAllocate(HAllocate* instr) {
2474 info()->MarkAsDeferredCalling();
2475 LOperand* context = UseAny(instr->context());
2476 LOperand* size = instr->size()->IsConstant()
2477 ? UseConstant(instr->size())
2478 : UseTempRegister(instr->size());
2479 LOperand* temp = TempRegister();
2480 LAllocate* result = new(zone()) LAllocate(context, size, temp);
2481 return AssignPointerMap(DefineAsRegister(result));
2485 LInstruction* LChunkBuilder::DoRegExpLiteral(HRegExpLiteral* instr) {
2486 LOperand* context = UseFixed(instr->context(), esi);
2488 DefineFixed(new(zone()) LRegExpLiteral(context), eax), instr);
2492 LInstruction* LChunkBuilder::DoFunctionLiteral(HFunctionLiteral* instr) {
2493 LOperand* context = UseFixed(instr->context(), esi);
2495 DefineFixed(new(zone()) LFunctionLiteral(context), eax), instr);
2499 LInstruction* LChunkBuilder::DoOsrEntry(HOsrEntry* instr) {
2500 DCHECK(argument_count_ == 0);
2501 allocator_->MarkAsOsrEntry();
2502 current_block_->last_environment()->set_ast_id(instr->ast_id());
2503 return AssignEnvironment(new(zone()) LOsrEntry);
2507 LInstruction* LChunkBuilder::DoParameter(HParameter* instr) {
2508 LParameter* result = new(zone()) LParameter;
2509 if (instr->kind() == HParameter::STACK_PARAMETER) {
2510 int spill_index = chunk()->GetParameterStackSlot(instr->index());
2511 return DefineAsSpilled(result, spill_index);
2513 DCHECK(info()->IsStub());
2514 CallInterfaceDescriptor descriptor =
2515 info()->code_stub()->GetCallInterfaceDescriptor();
2516 int index = static_cast<int>(instr->index());
2517 Register reg = descriptor.GetEnvironmentParameterRegister(index);
2518 return DefineFixed(result, reg);
2523 LInstruction* LChunkBuilder::DoUnknownOSRValue(HUnknownOSRValue* instr) {
2524 // Use an index that corresponds to the location in the unoptimized frame,
2525 // which the optimized frame will subsume.
2526 int env_index = instr->index();
2527 int spill_index = 0;
2528 if (instr->environment()->is_parameter_index(env_index)) {
2529 spill_index = chunk()->GetParameterStackSlot(env_index);
2531 spill_index = env_index - instr->environment()->first_local_index();
2532 if (spill_index > LUnallocated::kMaxFixedSlotIndex) {
2533 Retry(kNotEnoughSpillSlotsForOsr);
2536 if (spill_index == 0) {
2537 // The dynamic frame alignment state overwrites the first local.
2538 // The first local is saved at the end of the unoptimized frame.
2539 spill_index = graph()->osr()->UnoptimizedFrameSlots();
2542 return DefineAsSpilled(new(zone()) LUnknownOSRValue, spill_index);
2546 LInstruction* LChunkBuilder::DoCallStub(HCallStub* instr) {
2547 LOperand* context = UseFixed(instr->context(), esi);
2548 LCallStub* result = new(zone()) LCallStub(context);
2549 return MarkAsCall(DefineFixed(result, eax), instr);
2553 LInstruction* LChunkBuilder::DoArgumentsObject(HArgumentsObject* instr) {
2554 // There are no real uses of the arguments object.
2555 // arguments.length and element access are supported directly on
2556 // stack arguments, and any real arguments object use causes a bailout.
2557 // So this value is never used.
2562 LInstruction* LChunkBuilder::DoCapturedObject(HCapturedObject* instr) {
2563 instr->ReplayEnvironment(current_block_->last_environment());
2565 // There are no real uses of a captured object.
2570 LInstruction* LChunkBuilder::DoAccessArgumentsAt(HAccessArgumentsAt* instr) {
2571 info()->MarkAsRequiresFrame();
2572 LOperand* args = UseRegister(instr->arguments());
2575 if (instr->length()->IsConstant() && instr->index()->IsConstant()) {
2576 length = UseRegisterOrConstant(instr->length());
2577 index = UseOrConstant(instr->index());
2579 length = UseTempRegister(instr->length());
2580 index = Use(instr->index());
2582 return DefineAsRegister(new(zone()) LAccessArgumentsAt(args, length, index));
2586 LInstruction* LChunkBuilder::DoToFastProperties(HToFastProperties* instr) {
2587 LOperand* object = UseFixed(instr->value(), eax);
2588 LToFastProperties* result = new(zone()) LToFastProperties(object);
2589 return MarkAsCall(DefineFixed(result, eax), instr);
2593 LInstruction* LChunkBuilder::DoTypeof(HTypeof* instr) {
2594 LOperand* context = UseFixed(instr->context(), esi);
2595 LOperand* value = UseAtStart(instr->value());
2596 LTypeof* result = new(zone()) LTypeof(context, value);
2597 return MarkAsCall(DefineFixed(result, eax), instr);
2601 LInstruction* LChunkBuilder::DoTypeofIsAndBranch(HTypeofIsAndBranch* instr) {
2602 return new(zone()) LTypeofIsAndBranch(UseTempRegister(instr->value()));
2606 LInstruction* LChunkBuilder::DoIsConstructCallAndBranch(
2607 HIsConstructCallAndBranch* instr) {
2608 return new(zone()) LIsConstructCallAndBranch(TempRegister());
2612 LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) {
2613 instr->ReplayEnvironment(current_block_->last_environment());
2618 LInstruction* LChunkBuilder::DoStackCheck(HStackCheck* instr) {
2619 info()->MarkAsDeferredCalling();
2620 if (instr->is_function_entry()) {
2621 LOperand* context = UseFixed(instr->context(), esi);
2622 return MarkAsCall(new(zone()) LStackCheck(context), instr);
2624 DCHECK(instr->is_backwards_branch());
2625 LOperand* context = UseAny(instr->context());
2626 return AssignEnvironment(
2627 AssignPointerMap(new(zone()) LStackCheck(context)));
2632 LInstruction* LChunkBuilder::DoEnterInlined(HEnterInlined* instr) {
2633 HEnvironment* outer = current_block_->last_environment();
2634 outer->set_ast_id(instr->ReturnId());
2635 HConstant* undefined = graph()->GetConstantUndefined();
2636 HEnvironment* inner = outer->CopyForInlining(instr->closure(),
2637 instr->arguments_count(),
2640 instr->inlining_kind());
2641 // Only replay binding of arguments object if it wasn't removed from graph.
2642 if (instr->arguments_var() != NULL && instr->arguments_object()->IsLinked()) {
2643 inner->Bind(instr->arguments_var(), instr->arguments_object());
2645 inner->BindContext(instr->closure_context());
2646 inner->set_entry(instr);
2647 current_block_->UpdateEnvironment(inner);
2648 chunk_->AddInlinedClosure(instr->closure());
2653 LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) {
2654 LInstruction* pop = NULL;
2656 HEnvironment* env = current_block_->last_environment();
2658 if (env->entry()->arguments_pushed()) {
2659 int argument_count = env->arguments_environment()->parameter_count();
2660 pop = new(zone()) LDrop(argument_count);
2661 DCHECK(instr->argument_delta() == -argument_count);
2664 HEnvironment* outer = current_block_->last_environment()->
2665 DiscardInlined(false);
2666 current_block_->UpdateEnvironment(outer);
2671 LInstruction* LChunkBuilder::DoForInPrepareMap(HForInPrepareMap* instr) {
2672 LOperand* context = UseFixed(instr->context(), esi);
2673 LOperand* object = UseFixed(instr->enumerable(), eax);
2674 LForInPrepareMap* result = new(zone()) LForInPrepareMap(context, object);
2675 return MarkAsCall(DefineFixed(result, eax), instr, CAN_DEOPTIMIZE_EAGERLY);
2679 LInstruction* LChunkBuilder::DoForInCacheArray(HForInCacheArray* instr) {
2680 LOperand* map = UseRegister(instr->map());
2681 return AssignEnvironment(DefineAsRegister(
2682 new(zone()) LForInCacheArray(map)));
2686 LInstruction* LChunkBuilder::DoCheckMapValue(HCheckMapValue* instr) {
2687 LOperand* value = UseRegisterAtStart(instr->value());
2688 LOperand* map = UseRegisterAtStart(instr->map());
2689 return AssignEnvironment(new(zone()) LCheckMapValue(value, map));
2693 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) {
2694 LOperand* object = UseRegister(instr->object());
2695 LOperand* index = UseTempRegister(instr->index());
2696 LLoadFieldByIndex* load = new(zone()) LLoadFieldByIndex(object, index);
2697 LInstruction* result = DefineSameAsFirst(load);
2698 return AssignPointerMap(result);
2702 LInstruction* LChunkBuilder::DoStoreFrameContext(HStoreFrameContext* instr) {
2703 LOperand* context = UseRegisterAtStart(instr->context());
2704 return new(zone()) LStoreFrameContext(context);
2708 LInstruction* LChunkBuilder::DoAllocateBlockContext(
2709 HAllocateBlockContext* instr) {
2710 LOperand* context = UseFixed(instr->context(), esi);
2711 LOperand* function = UseRegisterAtStart(instr->function());
2712 LAllocateBlockContext* result =
2713 new(zone()) LAllocateBlockContext(context, function);
2714 return MarkAsCall(DefineFixed(result, esi), instr);
2718 } } // namespace v8::internal
2720 #endif // V8_TARGET_ARCH_X87