Upgrade V8 to version 4.9.385.28
https://chromium.googlesource.com/v8/v8/+/4.9.385.28
FPIIM-449
Change-Id: I4b2e74289d4bf3667f2f3dc8aa2e541f63e26eb4
diff --git a/src/crankshaft/mips64/lithium-mips64.cc b/src/crankshaft/mips64/lithium-mips64.cc
new file mode 100644
index 0000000..129f615
--- /dev/null
+++ b/src/crankshaft/mips64/lithium-mips64.cc
@@ -0,0 +1,2591 @@
+// Copyright 2012 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/crankshaft/mips64/lithium-mips64.h"
+
+#include <sstream>
+
+#if V8_TARGET_ARCH_MIPS64
+
+#include "src/crankshaft/hydrogen-osr.h"
+#include "src/crankshaft/lithium-inl.h"
+#include "src/crankshaft/mips64/lithium-codegen-mips64.h"
+
+namespace v8 {
+namespace internal {
+
+#define DEFINE_COMPILE(type) \
+ void L##type::CompileToNative(LCodeGen* generator) { \
+ generator->Do##type(this); \
+ }
+LITHIUM_CONCRETE_INSTRUCTION_LIST(DEFINE_COMPILE)
+#undef DEFINE_COMPILE
+
+#ifdef DEBUG
+void LInstruction::VerifyCall() {
+ // Call instructions can use only fixed registers as temporaries and
+ // outputs because all registers are blocked by the calling convention.
+ // Inputs operands must use a fixed register or use-at-start policy or
+ // a non-register policy.
+ DCHECK(Output() == NULL ||
+ LUnallocated::cast(Output())->HasFixedPolicy() ||
+ !LUnallocated::cast(Output())->HasRegisterPolicy());
+ for (UseIterator it(this); !it.Done(); it.Advance()) {
+ LUnallocated* operand = LUnallocated::cast(it.Current());
+ DCHECK(operand->HasFixedPolicy() ||
+ operand->IsUsedAtStart());
+ }
+ for (TempIterator it(this); !it.Done(); it.Advance()) {
+ LUnallocated* operand = LUnallocated::cast(it.Current());
+ DCHECK(operand->HasFixedPolicy() ||!operand->HasRegisterPolicy());
+ }
+}
+#endif
+
+
+void LInstruction::PrintTo(StringStream* stream) {
+ stream->Add("%s ", this->Mnemonic());
+
+ PrintOutputOperandTo(stream);
+
+ PrintDataTo(stream);
+
+ if (HasEnvironment()) {
+ stream->Add(" ");
+ environment()->PrintTo(stream);
+ }
+
+ if (HasPointerMap()) {
+ stream->Add(" ");
+ pointer_map()->PrintTo(stream);
+ }
+}
+
+
+void LInstruction::PrintDataTo(StringStream* stream) {
+ stream->Add("= ");
+ for (int i = 0; i < InputCount(); i++) {
+ if (i > 0) stream->Add(" ");
+ if (InputAt(i) == NULL) {
+ stream->Add("NULL");
+ } else {
+ InputAt(i)->PrintTo(stream);
+ }
+ }
+}
+
+
+void LInstruction::PrintOutputOperandTo(StringStream* stream) {
+ if (HasResult()) result()->PrintTo(stream);
+}
+
+
+void LLabel::PrintDataTo(StringStream* stream) {
+ LGap::PrintDataTo(stream);
+ LLabel* rep = replacement();
+ if (rep != NULL) {
+ stream->Add(" Dead block replaced with B%d", rep->block_id());
+ }
+}
+
+
+bool LGap::IsRedundant() const {
+ for (int i = 0; i < 4; i++) {
+ if (parallel_moves_[i] != NULL && !parallel_moves_[i]->IsRedundant()) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+
+void LGap::PrintDataTo(StringStream* stream) {
+ for (int i = 0; i < 4; i++) {
+ stream->Add("(");
+ if (parallel_moves_[i] != NULL) {
+ parallel_moves_[i]->PrintDataTo(stream);
+ }
+ stream->Add(") ");
+ }
+}
+
+
+const char* LArithmeticD::Mnemonic() const {
+ switch (op()) {
+ case Token::ADD: return "add-d";
+ case Token::SUB: return "sub-d";
+ case Token::MUL: return "mul-d";
+ case Token::DIV: return "div-d";
+ case Token::MOD: return "mod-d";
+ default:
+ UNREACHABLE();
+ return NULL;
+ }
+}
+
+
+const char* LArithmeticT::Mnemonic() const {
+ switch (op()) {
+ case Token::ADD: return "add-t";
+ case Token::SUB: return "sub-t";
+ case Token::MUL: return "mul-t";
+ case Token::MOD: return "mod-t";
+ case Token::DIV: return "div-t";
+ case Token::BIT_AND: return "bit-and-t";
+ case Token::BIT_OR: return "bit-or-t";
+ case Token::BIT_XOR: return "bit-xor-t";
+ case Token::ROR: return "ror-t";
+ case Token::SHL: return "sll-t";
+ case Token::SAR: return "sra-t";
+ case Token::SHR: return "srl-t";
+ default:
+ UNREACHABLE();
+ return NULL;
+ }
+}
+
+
+bool LGoto::HasInterestingComment(LCodeGen* gen) const {
+ return !gen->IsNextEmittedBlock(block_id());
+}
+
+
+void LGoto::PrintDataTo(StringStream* stream) {
+ stream->Add("B%d", block_id());
+}
+
+
+void LBranch::PrintDataTo(StringStream* stream) {
+ stream->Add("B%d | B%d on ", true_block_id(), false_block_id());
+ value()->PrintTo(stream);
+}
+
+
+LInstruction* LChunkBuilder::DoDebugBreak(HDebugBreak* instr) {
+ return new(zone()) LDebugBreak();
+}
+
+
+void LCompareNumericAndBranch::PrintDataTo(StringStream* stream) {
+ stream->Add("if ");
+ left()->PrintTo(stream);
+ stream->Add(" %s ", Token::String(op()));
+ right()->PrintTo(stream);
+ stream->Add(" then B%d else B%d", true_block_id(), false_block_id());
+}
+
+
+void LIsStringAndBranch::PrintDataTo(StringStream* stream) {
+ stream->Add("if is_string(");
+ value()->PrintTo(stream);
+ stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
+}
+
+
+void LIsSmiAndBranch::PrintDataTo(StringStream* stream) {
+ stream->Add("if is_smi(");
+ value()->PrintTo(stream);
+ stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
+}
+
+
+void LIsUndetectableAndBranch::PrintDataTo(StringStream* stream) {
+ stream->Add("if is_undetectable(");
+ value()->PrintTo(stream);
+ stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
+}
+
+
+void LStringCompareAndBranch::PrintDataTo(StringStream* stream) {
+ stream->Add("if string_compare(");
+ left()->PrintTo(stream);
+ right()->PrintTo(stream);
+ stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
+}
+
+
+void LHasInstanceTypeAndBranch::PrintDataTo(StringStream* stream) {
+ stream->Add("if has_instance_type(");
+ value()->PrintTo(stream);
+ stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
+}
+
+
+void LHasCachedArrayIndexAndBranch::PrintDataTo(StringStream* stream) {
+ stream->Add("if has_cached_array_index(");
+ value()->PrintTo(stream);
+ stream->Add(") then B%d else B%d", true_block_id(), false_block_id());
+}
+
+
+void LClassOfTestAndBranch::PrintDataTo(StringStream* stream) {
+ stream->Add("if class_of_test(");
+ value()->PrintTo(stream);
+ stream->Add(", \"%o\") then B%d else B%d",
+ *hydrogen()->class_name(),
+ true_block_id(),
+ false_block_id());
+}
+
+
+void LTypeofIsAndBranch::PrintDataTo(StringStream* stream) {
+ stream->Add("if typeof ");
+ value()->PrintTo(stream);
+ stream->Add(" == \"%s\" then B%d else B%d",
+ hydrogen()->type_literal()->ToCString().get(),
+ true_block_id(), false_block_id());
+}
+
+
+void LStoreCodeEntry::PrintDataTo(StringStream* stream) {
+ stream->Add(" = ");
+ function()->PrintTo(stream);
+ stream->Add(".code_entry = ");
+ code_object()->PrintTo(stream);
+}
+
+
+void LInnerAllocatedObject::PrintDataTo(StringStream* stream) {
+ stream->Add(" = ");
+ base_object()->PrintTo(stream);
+ stream->Add(" + ");
+ offset()->PrintTo(stream);
+}
+
+
+void LCallFunction::PrintDataTo(StringStream* stream) {
+ context()->PrintTo(stream);
+ stream->Add(" ");
+ function()->PrintTo(stream);
+ if (hydrogen()->HasVectorAndSlot()) {
+ stream->Add(" (type-feedback-vector ");
+ temp_vector()->PrintTo(stream);
+ stream->Add(" ");
+ temp_slot()->PrintTo(stream);
+ stream->Add(")");
+ }
+}
+
+
+void LCallJSFunction::PrintDataTo(StringStream* stream) {
+ stream->Add("= ");
+ function()->PrintTo(stream);
+ stream->Add("#%d / ", arity());
+}
+
+
+void LCallWithDescriptor::PrintDataTo(StringStream* stream) {
+ for (int i = 0; i < InputCount(); i++) {
+ InputAt(i)->PrintTo(stream);
+ stream->Add(" ");
+ }
+ stream->Add("#%d / ", arity());
+}
+
+
+void LLoadContextSlot::PrintDataTo(StringStream* stream) {
+ context()->PrintTo(stream);
+ stream->Add("[%d]", slot_index());
+}
+
+
+void LStoreContextSlot::PrintDataTo(StringStream* stream) {
+ context()->PrintTo(stream);
+ stream->Add("[%d] <- ", slot_index());
+ value()->PrintTo(stream);
+}
+
+
+void LInvokeFunction::PrintDataTo(StringStream* stream) {
+ stream->Add("= ");
+ function()->PrintTo(stream);
+ stream->Add(" #%d / ", arity());
+}
+
+
+void LCallNewArray::PrintDataTo(StringStream* stream) {
+ stream->Add("= ");
+ constructor()->PrintTo(stream);
+ stream->Add(" #%d / ", arity());
+ ElementsKind kind = hydrogen()->elements_kind();
+ stream->Add(" (%s) ", ElementsKindToString(kind));
+}
+
+
+void LAccessArgumentsAt::PrintDataTo(StringStream* stream) {
+ arguments()->PrintTo(stream);
+ stream->Add(" length ");
+ length()->PrintTo(stream);
+ stream->Add(" index ");
+ index()->PrintTo(stream);
+}
+
+
+void LStoreNamedField::PrintDataTo(StringStream* stream) {
+ object()->PrintTo(stream);
+ std::ostringstream os;
+ os << hydrogen()->access() << " <- ";
+ stream->Add(os.str().c_str());
+ value()->PrintTo(stream);
+}
+
+
+void LStoreNamedGeneric::PrintDataTo(StringStream* stream) {
+ object()->PrintTo(stream);
+ stream->Add(".");
+ stream->Add(String::cast(*name())->ToCString().get());
+ stream->Add(" <- ");
+ value()->PrintTo(stream);
+}
+
+
+void LLoadKeyed::PrintDataTo(StringStream* stream) {
+ elements()->PrintTo(stream);
+ stream->Add("[");
+ key()->PrintTo(stream);
+ if (hydrogen()->IsDehoisted()) {
+ stream->Add(" + %d]", base_offset());
+ } else {
+ stream->Add("]");
+ }
+}
+
+
+void LStoreKeyed::PrintDataTo(StringStream* stream) {
+ elements()->PrintTo(stream);
+ stream->Add("[");
+ key()->PrintTo(stream);
+ if (hydrogen()->IsDehoisted()) {
+ stream->Add(" + %d] <-", base_offset());
+ } else {
+ stream->Add("] <- ");
+ }
+
+ if (value() == NULL) {
+ DCHECK(hydrogen()->IsConstantHoleStore() &&
+ hydrogen()->value()->representation().IsDouble());
+ stream->Add("<the hole(nan)>");
+ } else {
+ value()->PrintTo(stream);
+ }
+}
+
+
+void LStoreKeyedGeneric::PrintDataTo(StringStream* stream) {
+ object()->PrintTo(stream);
+ stream->Add("[");
+ key()->PrintTo(stream);
+ stream->Add("] <- ");
+ value()->PrintTo(stream);
+}
+
+
+void LTransitionElementsKind::PrintDataTo(StringStream* stream) {
+ object()->PrintTo(stream);
+ stream->Add(" %p -> %p", *original_map(), *transitioned_map());
+}
+
+
+int LPlatformChunk::GetNextSpillIndex(RegisterKind kind) {
+ // Skip a slot if for a double-width slot.
+ if (kind == DOUBLE_REGISTERS) spill_slot_count_++;
+ return spill_slot_count_++;
+}
+
+
+LOperand* LPlatformChunk::GetNextSpillSlot(RegisterKind kind) {
+ int index = GetNextSpillIndex(kind);
+ if (kind == DOUBLE_REGISTERS) {
+ return LDoubleStackSlot::Create(index, zone());
+ } else {
+ DCHECK(kind == GENERAL_REGISTERS);
+ return LStackSlot::Create(index, zone());
+ }
+}
+
+
+LPlatformChunk* LChunkBuilder::Build() {
+ DCHECK(is_unused());
+ chunk_ = new(zone()) LPlatformChunk(info(), graph());
+ LPhase phase("L_Building chunk", chunk_);
+ status_ = BUILDING;
+
+ // If compiling for OSR, reserve space for the unoptimized frame,
+ // which will be subsumed into this frame.
+ if (graph()->has_osr()) {
+ for (int i = graph()->osr()->UnoptimizedFrameSlots(); i > 0; i--) {
+ chunk_->GetNextSpillIndex(GENERAL_REGISTERS);
+ }
+ }
+
+ const ZoneList<HBasicBlock*>* blocks = graph()->blocks();
+ for (int i = 0; i < blocks->length(); i++) {
+ HBasicBlock* next = NULL;
+ if (i < blocks->length() - 1) next = blocks->at(i + 1);
+ DoBasicBlock(blocks->at(i), next);
+ if (is_aborted()) return NULL;
+ }
+ status_ = DONE;
+ return chunk_;
+}
+
+
+LUnallocated* LChunkBuilder::ToUnallocated(Register reg) {
+ return new (zone()) LUnallocated(LUnallocated::FIXED_REGISTER, reg.code());
+}
+
+
+LUnallocated* LChunkBuilder::ToUnallocated(DoubleRegister reg) {
+ return new (zone())
+ LUnallocated(LUnallocated::FIXED_DOUBLE_REGISTER, reg.code());
+}
+
+
+LOperand* LChunkBuilder::UseFixed(HValue* value, Register fixed_register) {
+ return Use(value, ToUnallocated(fixed_register));
+}
+
+
+LOperand* LChunkBuilder::UseFixedDouble(HValue* value, DoubleRegister reg) {
+ return Use(value, ToUnallocated(reg));
+}
+
+
+LOperand* LChunkBuilder::UseRegister(HValue* value) {
+ return Use(value, new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER));
+}
+
+
+LOperand* LChunkBuilder::UseRegisterAtStart(HValue* value) {
+ return Use(value,
+ new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER,
+ LUnallocated::USED_AT_START));
+}
+
+
+LOperand* LChunkBuilder::UseTempRegister(HValue* value) {
+ return Use(value, new(zone()) LUnallocated(LUnallocated::WRITABLE_REGISTER));
+}
+
+
+LOperand* LChunkBuilder::Use(HValue* value) {
+ return Use(value, new(zone()) LUnallocated(LUnallocated::NONE));
+}
+
+
+LOperand* LChunkBuilder::UseAtStart(HValue* value) {
+ return Use(value, new(zone()) LUnallocated(LUnallocated::NONE,
+ LUnallocated::USED_AT_START));
+}
+
+
+LOperand* LChunkBuilder::UseOrConstant(HValue* value) {
+ return value->IsConstant()
+ ? chunk_->DefineConstantOperand(HConstant::cast(value))
+ : Use(value);
+}
+
+
+LOperand* LChunkBuilder::UseOrConstantAtStart(HValue* value) {
+ return value->IsConstant()
+ ? chunk_->DefineConstantOperand(HConstant::cast(value))
+ : UseAtStart(value);
+}
+
+
+LOperand* LChunkBuilder::UseRegisterOrConstant(HValue* value) {
+ return value->IsConstant()
+ ? chunk_->DefineConstantOperand(HConstant::cast(value))
+ : UseRegister(value);
+}
+
+
+LOperand* LChunkBuilder::UseRegisterOrConstantAtStart(HValue* value) {
+ return value->IsConstant()
+ ? chunk_->DefineConstantOperand(HConstant::cast(value))
+ : UseRegisterAtStart(value);
+}
+
+
+LOperand* LChunkBuilder::UseConstant(HValue* value) {
+ return chunk_->DefineConstantOperand(HConstant::cast(value));
+}
+
+
+LOperand* LChunkBuilder::UseAny(HValue* value) {
+ return value->IsConstant()
+ ? chunk_->DefineConstantOperand(HConstant::cast(value))
+ : Use(value, new(zone()) LUnallocated(LUnallocated::ANY));
+}
+
+
+LOperand* LChunkBuilder::Use(HValue* value, LUnallocated* operand) {
+ if (value->EmitAtUses()) {
+ HInstruction* instr = HInstruction::cast(value);
+ VisitInstruction(instr);
+ }
+ operand->set_virtual_register(value->id());
+ return operand;
+}
+
+
+LInstruction* LChunkBuilder::Define(LTemplateResultInstruction<1>* instr,
+ LUnallocated* result) {
+ result->set_virtual_register(current_instruction_->id());
+ instr->set_result(result);
+ return instr;
+}
+
+
+LInstruction* LChunkBuilder::DefineAsRegister(
+ LTemplateResultInstruction<1>* instr) {
+ return Define(instr,
+ new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER));
+}
+
+
+LInstruction* LChunkBuilder::DefineAsSpilled(
+ LTemplateResultInstruction<1>* instr, int index) {
+ return Define(instr,
+ new(zone()) LUnallocated(LUnallocated::FIXED_SLOT, index));
+}
+
+
+LInstruction* LChunkBuilder::DefineSameAsFirst(
+ LTemplateResultInstruction<1>* instr) {
+ return Define(instr,
+ new(zone()) LUnallocated(LUnallocated::SAME_AS_FIRST_INPUT));
+}
+
+
+LInstruction* LChunkBuilder::DefineFixed(
+ LTemplateResultInstruction<1>* instr, Register reg) {
+ return Define(instr, ToUnallocated(reg));
+}
+
+
+LInstruction* LChunkBuilder::DefineFixedDouble(
+ LTemplateResultInstruction<1>* instr, DoubleRegister reg) {
+ return Define(instr, ToUnallocated(reg));
+}
+
+
+LInstruction* LChunkBuilder::AssignEnvironment(LInstruction* instr) {
+ HEnvironment* hydrogen_env = current_block_->last_environment();
+ int argument_index_accumulator = 0;
+ ZoneList<HValue*> objects_to_materialize(0, zone());
+ instr->set_environment(CreateEnvironment(hydrogen_env,
+ &argument_index_accumulator,
+ &objects_to_materialize));
+ return instr;
+}
+
+
+LInstruction* LChunkBuilder::MarkAsCall(LInstruction* instr,
+ HInstruction* hinstr,
+ CanDeoptimize can_deoptimize) {
+ info()->MarkAsNonDeferredCalling();
+#ifdef DEBUG
+ instr->VerifyCall();
+#endif
+ instr->MarkAsCall();
+ instr = AssignPointerMap(instr);
+
+ // If instruction does not have side-effects lazy deoptimization
+ // after the call will try to deoptimize to the point before the call.
+ // Thus we still need to attach environment to this call even if
+ // call sequence can not deoptimize eagerly.
+ bool needs_environment =
+ (can_deoptimize == CAN_DEOPTIMIZE_EAGERLY) ||
+ !hinstr->HasObservableSideEffects();
+ if (needs_environment && !instr->HasEnvironment()) {
+ instr = AssignEnvironment(instr);
+ // We can't really figure out if the environment is needed or not.
+ instr->environment()->set_has_been_used();
+ }
+
+ return instr;
+}
+
+
+LInstruction* LChunkBuilder::AssignPointerMap(LInstruction* instr) {
+ DCHECK(!instr->HasPointerMap());
+ instr->set_pointer_map(new(zone()) LPointerMap(zone()));
+ return instr;
+}
+
+
+LUnallocated* LChunkBuilder::TempRegister() {
+ LUnallocated* operand =
+ new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER);
+ int vreg = allocator_->GetVirtualRegister();
+ if (!allocator_->AllocationOk()) {
+ Abort(kOutOfVirtualRegistersWhileTryingToAllocateTempRegister);
+ vreg = 0;
+ }
+ operand->set_virtual_register(vreg);
+ return operand;
+}
+
+
+LUnallocated* LChunkBuilder::TempDoubleRegister() {
+ LUnallocated* operand =
+ new(zone()) LUnallocated(LUnallocated::MUST_HAVE_DOUBLE_REGISTER);
+ int vreg = allocator_->GetVirtualRegister();
+ if (!allocator_->AllocationOk()) {
+ Abort(kOutOfVirtualRegistersWhileTryingToAllocateTempRegister);
+ vreg = 0;
+ }
+ operand->set_virtual_register(vreg);
+ return operand;
+}
+
+
+LOperand* LChunkBuilder::FixedTemp(Register reg) {
+ LUnallocated* operand = ToUnallocated(reg);
+ DCHECK(operand->HasFixedPolicy());
+ return operand;
+}
+
+
+LOperand* LChunkBuilder::FixedTemp(DoubleRegister reg) {
+ LUnallocated* operand = ToUnallocated(reg);
+ DCHECK(operand->HasFixedPolicy());
+ return operand;
+}
+
+
+LInstruction* LChunkBuilder::DoBlockEntry(HBlockEntry* instr) {
+ return new(zone()) LLabel(instr->block());
+}
+
+
+LInstruction* LChunkBuilder::DoDummyUse(HDummyUse* instr) {
+ return DefineAsRegister(new(zone()) LDummyUse(UseAny(instr->value())));
+}
+
+
+LInstruction* LChunkBuilder::DoEnvironmentMarker(HEnvironmentMarker* instr) {
+ UNREACHABLE();
+ return NULL;
+}
+
+
+LInstruction* LChunkBuilder::DoDeoptimize(HDeoptimize* instr) {
+ return AssignEnvironment(new(zone()) LDeoptimize);
+}
+
+
+LInstruction* LChunkBuilder::DoShift(Token::Value op,
+ HBitwiseBinaryOperation* instr) {
+ if (instr->representation().IsSmiOrInteger32()) {
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ LOperand* left = UseRegisterAtStart(instr->left());
+
+ HValue* right_value = instr->right();
+ LOperand* right = NULL;
+ int constant_value = 0;
+ bool does_deopt = false;
+ if (right_value->IsConstant()) {
+ HConstant* constant = HConstant::cast(right_value);
+ right = chunk_->DefineConstantOperand(constant);
+ constant_value = constant->Integer32Value() & 0x1f;
+ // Left shifts can deoptimize if we shift by > 0 and the result cannot be
+ // truncated to smi.
+ if (instr->representation().IsSmi() && constant_value > 0) {
+ does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToSmi);
+ }
+ } else {
+ right = UseRegisterAtStart(right_value);
+ }
+
+ // Shift operations can only deoptimize if we do a logical shift
+ // by 0 and the result cannot be truncated to int32.
+ if (op == Token::SHR && constant_value == 0) {
+ does_deopt = !instr->CheckFlag(HInstruction::kUint32);
+ }
+
+ LInstruction* result =
+ DefineAsRegister(new(zone()) LShiftI(op, left, right, does_deopt));
+ return does_deopt ? AssignEnvironment(result) : result;
+ } else {
+ return DoArithmeticT(op, instr);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoArithmeticD(Token::Value op,
+ HArithmeticBinaryOperation* instr) {
+ DCHECK(instr->representation().IsDouble());
+ DCHECK(instr->left()->representation().IsDouble());
+ DCHECK(instr->right()->representation().IsDouble());
+ if (op == Token::MOD) {
+ LOperand* left = UseFixedDouble(instr->left(), f2);
+ LOperand* right = UseFixedDouble(instr->right(), f4);
+ LArithmeticD* result = new(zone()) LArithmeticD(op, left, right);
+ // We call a C function for double modulo. It can't trigger a GC. We need
+ // to use fixed result register for the call.
+ // TODO(fschneider): Allow any register as input registers.
+ return MarkAsCall(DefineFixedDouble(result, f2), instr);
+ } else {
+ LOperand* left = UseRegisterAtStart(instr->left());
+ LOperand* right = UseRegisterAtStart(instr->right());
+ LArithmeticD* result = new(zone()) LArithmeticD(op, left, right);
+ return DefineAsRegister(result);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoArithmeticT(Token::Value op,
+ HBinaryOperation* instr) {
+ HValue* left = instr->left();
+ HValue* right = instr->right();
+ DCHECK(left->representation().IsTagged());
+ DCHECK(right->representation().IsTagged());
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* left_operand = UseFixed(left, a1);
+ LOperand* right_operand = UseFixed(right, a0);
+ LArithmeticT* result =
+ new(zone()) LArithmeticT(op, context, left_operand, right_operand);
+ return MarkAsCall(DefineFixed(result, v0), instr);
+}
+
+
+void LChunkBuilder::DoBasicBlock(HBasicBlock* block, HBasicBlock* next_block) {
+ DCHECK(is_building());
+ current_block_ = block;
+ next_block_ = next_block;
+ if (block->IsStartBlock()) {
+ block->UpdateEnvironment(graph_->start_environment());
+ argument_count_ = 0;
+ } else if (block->predecessors()->length() == 1) {
+ // We have a single predecessor => copy environment and outgoing
+ // argument count from the predecessor.
+ DCHECK(block->phis()->length() == 0);
+ HBasicBlock* pred = block->predecessors()->at(0);
+ HEnvironment* last_environment = pred->last_environment();
+ DCHECK(last_environment != NULL);
+ // Only copy the environment, if it is later used again.
+ if (pred->end()->SecondSuccessor() == NULL) {
+ DCHECK(pred->end()->FirstSuccessor() == block);
+ } else {
+ if (pred->end()->FirstSuccessor()->block_id() > block->block_id() ||
+ pred->end()->SecondSuccessor()->block_id() > block->block_id()) {
+ last_environment = last_environment->Copy();
+ }
+ }
+ block->UpdateEnvironment(last_environment);
+ DCHECK(pred->argument_count() >= 0);
+ argument_count_ = pred->argument_count();
+ } else {
+ // We are at a state join => process phis.
+ HBasicBlock* pred = block->predecessors()->at(0);
+ // No need to copy the environment, it cannot be used later.
+ HEnvironment* last_environment = pred->last_environment();
+ for (int i = 0; i < block->phis()->length(); ++i) {
+ HPhi* phi = block->phis()->at(i);
+ if (phi->HasMergedIndex()) {
+ last_environment->SetValueAt(phi->merged_index(), phi);
+ }
+ }
+ for (int i = 0; i < block->deleted_phis()->length(); ++i) {
+ if (block->deleted_phis()->at(i) < last_environment->length()) {
+ last_environment->SetValueAt(block->deleted_phis()->at(i),
+ graph_->GetConstantUndefined());
+ }
+ }
+ block->UpdateEnvironment(last_environment);
+ // Pick up the outgoing argument count of one of the predecessors.
+ argument_count_ = pred->argument_count();
+ }
+ HInstruction* current = block->first();
+ int start = chunk_->instructions()->length();
+ while (current != NULL && !is_aborted()) {
+ // Code for constants in registers is generated lazily.
+ if (!current->EmitAtUses()) {
+ VisitInstruction(current);
+ }
+ current = current->next();
+ }
+ int end = chunk_->instructions()->length() - 1;
+ if (end >= start) {
+ block->set_first_instruction_index(start);
+ block->set_last_instruction_index(end);
+ }
+ block->set_argument_count(argument_count_);
+ next_block_ = NULL;
+ current_block_ = NULL;
+}
+
+
+void LChunkBuilder::VisitInstruction(HInstruction* current) {
+ HInstruction* old_current = current_instruction_;
+ current_instruction_ = current;
+
+ LInstruction* instr = NULL;
+ if (current->CanReplaceWithDummyUses()) {
+ if (current->OperandCount() == 0) {
+ instr = DefineAsRegister(new(zone()) LDummy());
+ } else {
+ DCHECK(!current->OperandAt(0)->IsControlInstruction());
+ instr = DefineAsRegister(new(zone())
+ LDummyUse(UseAny(current->OperandAt(0))));
+ }
+ for (int i = 1; i < current->OperandCount(); ++i) {
+ if (current->OperandAt(i)->IsControlInstruction()) continue;
+ LInstruction* dummy =
+ new(zone()) LDummyUse(UseAny(current->OperandAt(i)));
+ dummy->set_hydrogen_value(current);
+ chunk_->AddInstruction(dummy, current_block_);
+ }
+ } else {
+ HBasicBlock* successor;
+ if (current->IsControlInstruction() &&
+ HControlInstruction::cast(current)->KnownSuccessorBlock(&successor) &&
+ successor != NULL) {
+ instr = new(zone()) LGoto(successor);
+ } else {
+ instr = current->CompileToLithium(this);
+ }
+ }
+
+ argument_count_ += current->argument_delta();
+ DCHECK(argument_count_ >= 0);
+
+ if (instr != NULL) {
+ AddInstruction(instr, current);
+ }
+
+ current_instruction_ = old_current;
+}
+
+
+void LChunkBuilder::AddInstruction(LInstruction* instr,
+ HInstruction* hydrogen_val) {
+// Associate the hydrogen instruction first, since we may need it for
+ // the ClobbersRegisters() or ClobbersDoubleRegisters() calls below.
+ instr->set_hydrogen_value(hydrogen_val);
+
+#if DEBUG
+ // Make sure that the lithium instruction has either no fixed register
+ // constraints in temps or the result OR no uses that are only used at
+ // start. If this invariant doesn't hold, the register allocator can decide
+ // to insert a split of a range immediately before the instruction due to an
+ // already allocated register needing to be used for the instruction's fixed
+ // register constraint. In this case, The register allocator won't see an
+ // interference between the split child and the use-at-start (it would if
+ // the it was just a plain use), so it is free to move the split child into
+ // the same register that is used for the use-at-start.
+ // See https://code.google.com/p/chromium/issues/detail?id=201590
+ if (!(instr->ClobbersRegisters() &&
+ instr->ClobbersDoubleRegisters(isolate()))) {
+ int fixed = 0;
+ int used_at_start = 0;
+ for (UseIterator it(instr); !it.Done(); it.Advance()) {
+ LUnallocated* operand = LUnallocated::cast(it.Current());
+ if (operand->IsUsedAtStart()) ++used_at_start;
+ }
+ if (instr->Output() != NULL) {
+ if (LUnallocated::cast(instr->Output())->HasFixedPolicy()) ++fixed;
+ }
+ for (TempIterator it(instr); !it.Done(); it.Advance()) {
+ LUnallocated* operand = LUnallocated::cast(it.Current());
+ if (operand->HasFixedPolicy()) ++fixed;
+ }
+ DCHECK(fixed == 0 || used_at_start == 0);
+ }
+#endif
+
+ if (FLAG_stress_pointer_maps && !instr->HasPointerMap()) {
+ instr = AssignPointerMap(instr);
+ }
+ if (FLAG_stress_environments && !instr->HasEnvironment()) {
+ instr = AssignEnvironment(instr);
+ }
+ chunk_->AddInstruction(instr, current_block_);
+
+ if (instr->IsCall() || instr->IsPrologue()) {
+ HValue* hydrogen_value_for_lazy_bailout = hydrogen_val;
+ if (hydrogen_val->HasObservableSideEffects()) {
+ HSimulate* sim = HSimulate::cast(hydrogen_val->next());
+ sim->ReplayEnvironment(current_block_->last_environment());
+ hydrogen_value_for_lazy_bailout = sim;
+ }
+ LInstruction* bailout = AssignEnvironment(new(zone()) LLazyBailout());
+ bailout->set_hydrogen_value(hydrogen_value_for_lazy_bailout);
+ chunk_->AddInstruction(bailout, current_block_);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoPrologue(HPrologue* instr) {
+ return new (zone()) LPrologue();
+}
+
+
+LInstruction* LChunkBuilder::DoGoto(HGoto* instr) {
+ return new(zone()) LGoto(instr->FirstSuccessor());
+}
+
+
+LInstruction* LChunkBuilder::DoBranch(HBranch* instr) {
+ HValue* value = instr->value();
+ Representation r = value->representation();
+ HType type = value->type();
+ ToBooleanStub::Types expected = instr->expected_input_types();
+ if (expected.IsEmpty()) expected = ToBooleanStub::Types::Generic();
+
+ bool easy_case = !r.IsTagged() || type.IsBoolean() || type.IsSmi() ||
+ type.IsJSArray() || type.IsHeapNumber() || type.IsString();
+ LInstruction* branch = new(zone()) LBranch(UseRegister(value));
+ if (!easy_case &&
+ ((!expected.Contains(ToBooleanStub::SMI) && expected.NeedsMap()) ||
+ !expected.IsGeneric())) {
+ branch = AssignEnvironment(branch);
+ }
+ return branch;
+}
+
+
+LInstruction* LChunkBuilder::DoCompareMap(HCompareMap* instr) {
+ DCHECK(instr->value()->representation().IsTagged());
+ LOperand* value = UseRegisterAtStart(instr->value());
+ LOperand* temp = TempRegister();
+ return new(zone()) LCmpMapAndBranch(value, temp);
+}
+
+
+LInstruction* LChunkBuilder::DoArgumentsLength(HArgumentsLength* length) {
+ info()->MarkAsRequiresFrame();
+ return DefineAsRegister(
+ new(zone()) LArgumentsLength(UseRegister(length->value())));
+}
+
+
+LInstruction* LChunkBuilder::DoArgumentsElements(HArgumentsElements* elems) {
+ info()->MarkAsRequiresFrame();
+ return DefineAsRegister(new(zone()) LArgumentsElements);
+}
+
+
+LInstruction* LChunkBuilder::DoInstanceOf(HInstanceOf* instr) {
+ LOperand* left =
+ UseFixed(instr->left(), InstanceOfDescriptor::LeftRegister());
+ LOperand* right =
+ UseFixed(instr->right(), InstanceOfDescriptor::RightRegister());
+ LOperand* context = UseFixed(instr->context(), cp);
+ LInstanceOf* result = new (zone()) LInstanceOf(context, left, right);
+ return MarkAsCall(DefineFixed(result, v0), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoHasInPrototypeChainAndBranch(
+ HHasInPrototypeChainAndBranch* instr) {
+ LOperand* object = UseRegister(instr->object());
+ LOperand* prototype = UseRegister(instr->prototype());
+ LHasInPrototypeChainAndBranch* result =
+ new (zone()) LHasInPrototypeChainAndBranch(object, prototype);
+ return AssignEnvironment(result);
+}
+
+
+LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) {
+ LOperand* receiver = UseRegisterAtStart(instr->receiver());
+ LOperand* function = UseRegisterAtStart(instr->function());
+ LWrapReceiver* result = new(zone()) LWrapReceiver(receiver, function);
+ return AssignEnvironment(DefineAsRegister(result));
+}
+
+
+LInstruction* LChunkBuilder::DoApplyArguments(HApplyArguments* instr) {
+ LOperand* function = UseFixed(instr->function(), a1);
+ LOperand* receiver = UseFixed(instr->receiver(), a0);
+ LOperand* length = UseFixed(instr->length(), a2);
+ LOperand* elements = UseFixed(instr->elements(), a3);
+ LApplyArguments* result = new(zone()) LApplyArguments(function,
+ receiver,
+ length,
+ elements);
+ return MarkAsCall(DefineFixed(result, v0), instr, CAN_DEOPTIMIZE_EAGERLY);
+}
+
+
+LInstruction* LChunkBuilder::DoPushArguments(HPushArguments* instr) {
+ int argc = instr->OperandCount();
+ for (int i = 0; i < argc; ++i) {
+ LOperand* argument = Use(instr->argument(i));
+ AddInstruction(new(zone()) LPushArgument(argument), instr);
+ }
+ return NULL;
+}
+
+
+LInstruction* LChunkBuilder::DoStoreCodeEntry(
+ HStoreCodeEntry* store_code_entry) {
+ LOperand* function = UseRegister(store_code_entry->function());
+ LOperand* code_object = UseTempRegister(store_code_entry->code_object());
+ return new(zone()) LStoreCodeEntry(function, code_object);
+}
+
+
+LInstruction* LChunkBuilder::DoInnerAllocatedObject(
+ HInnerAllocatedObject* instr) {
+ LOperand* base_object = UseRegisterAtStart(instr->base_object());
+ LOperand* offset = UseRegisterOrConstantAtStart(instr->offset());
+ return DefineAsRegister(
+ new(zone()) LInnerAllocatedObject(base_object, offset));
+}
+
+
+LInstruction* LChunkBuilder::DoThisFunction(HThisFunction* instr) {
+ return instr->HasNoUses()
+ ? NULL
+ : DefineAsRegister(new(zone()) LThisFunction);
+}
+
+
+LInstruction* LChunkBuilder::DoContext(HContext* instr) {
+ if (instr->HasNoUses()) return NULL;
+
+ if (info()->IsStub()) {
+ return DefineFixed(new(zone()) LContext, cp);
+ }
+
+ return DefineAsRegister(new(zone()) LContext);
+}
+
+
+LInstruction* LChunkBuilder::DoDeclareGlobals(HDeclareGlobals* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ return MarkAsCall(new(zone()) LDeclareGlobals(context), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoCallJSFunction(
+ HCallJSFunction* instr) {
+ LOperand* function = UseFixed(instr->function(), a1);
+
+ LCallJSFunction* result = new(zone()) LCallJSFunction(function);
+
+ return MarkAsCall(DefineFixed(result, v0), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoCallWithDescriptor(
+ HCallWithDescriptor* instr) {
+ CallInterfaceDescriptor descriptor = instr->descriptor();
+
+ LOperand* target = UseRegisterOrConstantAtStart(instr->target());
+ ZoneList<LOperand*> ops(instr->OperandCount(), zone());
+ // Target
+ ops.Add(target, zone());
+ // Context
+ LOperand* op = UseFixed(instr->OperandAt(1), cp);
+ ops.Add(op, zone());
+ // Other register parameters
+ for (int i = LCallWithDescriptor::kImplicitRegisterParameterCount;
+ i < instr->OperandCount(); i++) {
+ op =
+ UseFixed(instr->OperandAt(i),
+ descriptor.GetRegisterParameter(
+ i - LCallWithDescriptor::kImplicitRegisterParameterCount));
+ ops.Add(op, zone());
+ }
+
+ LCallWithDescriptor* result = new(zone()) LCallWithDescriptor(
+ descriptor, ops, zone());
+ return MarkAsCall(DefineFixed(result, v0), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoInvokeFunction(HInvokeFunction* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* function = UseFixed(instr->function(), a1);
+ LInvokeFunction* result = new(zone()) LInvokeFunction(context, function);
+ return MarkAsCall(DefineFixed(result, v0), instr, CANNOT_DEOPTIMIZE_EAGERLY);
+}
+
+
+LInstruction* LChunkBuilder::DoUnaryMathOperation(HUnaryMathOperation* instr) {
+ switch (instr->op()) {
+ case kMathFloor:
+ return DoMathFloor(instr);
+ case kMathRound:
+ return DoMathRound(instr);
+ case kMathFround:
+ return DoMathFround(instr);
+ case kMathAbs:
+ return DoMathAbs(instr);
+ case kMathLog:
+ return DoMathLog(instr);
+ case kMathExp:
+ return DoMathExp(instr);
+ case kMathSqrt:
+ return DoMathSqrt(instr);
+ case kMathPowHalf:
+ return DoMathPowHalf(instr);
+ case kMathClz32:
+ return DoMathClz32(instr);
+ default:
+ UNREACHABLE();
+ return NULL;
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoMathLog(HUnaryMathOperation* instr) {
+ DCHECK(instr->representation().IsDouble());
+ DCHECK(instr->value()->representation().IsDouble());
+ LOperand* input = UseFixedDouble(instr->value(), f4);
+ return MarkAsCall(DefineFixedDouble(new(zone()) LMathLog(input), f4), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoMathClz32(HUnaryMathOperation* instr) {
+ LOperand* input = UseRegisterAtStart(instr->value());
+ LMathClz32* result = new(zone()) LMathClz32(input);
+ return DefineAsRegister(result);
+}
+
+
+LInstruction* LChunkBuilder::DoMathExp(HUnaryMathOperation* instr) {
+ DCHECK(instr->representation().IsDouble());
+ DCHECK(instr->value()->representation().IsDouble());
+ LOperand* input = UseRegister(instr->value());
+ LOperand* temp1 = TempRegister();
+ LOperand* temp2 = TempRegister();
+ LOperand* double_temp = TempDoubleRegister();
+ LMathExp* result = new(zone()) LMathExp(input, double_temp, temp1, temp2);
+ return DefineAsRegister(result);
+}
+
+
+LInstruction* LChunkBuilder::DoMathPowHalf(HUnaryMathOperation* instr) {
+ // Input cannot be the same as the result, see LCodeGen::DoMathPowHalf.
+ LOperand* input = UseFixedDouble(instr->value(), f8);
+ LOperand* temp = TempDoubleRegister();
+ LMathPowHalf* result = new(zone()) LMathPowHalf(input, temp);
+ return DefineFixedDouble(result, f4);
+}
+
+
+LInstruction* LChunkBuilder::DoMathFround(HUnaryMathOperation* instr) {
+ LOperand* input = UseRegister(instr->value());
+ LMathFround* result = new (zone()) LMathFround(input);
+ return DefineAsRegister(result);
+}
+
+
+LInstruction* LChunkBuilder::DoMathAbs(HUnaryMathOperation* instr) {
+ Representation r = instr->value()->representation();
+ LOperand* context = (r.IsDouble() || r.IsSmiOrInteger32())
+ ? NULL
+ : UseFixed(instr->context(), cp);
+ LOperand* input = UseRegister(instr->value());
+ LInstruction* result =
+ DefineAsRegister(new(zone()) LMathAbs(context, input));
+ if (!r.IsDouble() && !r.IsSmiOrInteger32()) result = AssignPointerMap(result);
+ if (!r.IsDouble()) result = AssignEnvironment(result);
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoMathFloor(HUnaryMathOperation* instr) {
+ LOperand* input = UseRegister(instr->value());
+ LOperand* temp = TempRegister();
+ LMathFloor* result = new(zone()) LMathFloor(input, temp);
+ return AssignEnvironment(AssignPointerMap(DefineAsRegister(result)));
+}
+
+
+LInstruction* LChunkBuilder::DoMathSqrt(HUnaryMathOperation* instr) {
+ LOperand* input = UseRegister(instr->value());
+ LMathSqrt* result = new(zone()) LMathSqrt(input);
+ return DefineAsRegister(result);
+}
+
+
+LInstruction* LChunkBuilder::DoMathRound(HUnaryMathOperation* instr) {
+ LOperand* input = UseRegister(instr->value());
+ LOperand* temp = TempDoubleRegister();
+ LMathRound* result = new(zone()) LMathRound(input, temp);
+ return AssignEnvironment(DefineAsRegister(result));
+}
+
+
+LInstruction* LChunkBuilder::DoCallNewArray(HCallNewArray* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* constructor = UseFixed(instr->constructor(), a1);
+ LCallNewArray* result = new(zone()) LCallNewArray(context, constructor);
+ return MarkAsCall(DefineFixed(result, v0), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoCallFunction(HCallFunction* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* function = UseFixed(instr->function(), a1);
+ LOperand* slot = NULL;
+ LOperand* vector = NULL;
+ if (instr->HasVectorAndSlot()) {
+ slot = FixedTemp(a3);
+ vector = FixedTemp(a2);
+ }
+
+ LCallFunction* call =
+ new (zone()) LCallFunction(context, function, slot, vector);
+ return MarkAsCall(DefineFixed(call, v0), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoCallRuntime(HCallRuntime* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ return MarkAsCall(DefineFixed(new(zone()) LCallRuntime(context), v0), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoRor(HRor* instr) {
+ return DoShift(Token::ROR, instr);
+}
+
+
+LInstruction* LChunkBuilder::DoShr(HShr* instr) {
+ return DoShift(Token::SHR, instr);
+}
+
+
+LInstruction* LChunkBuilder::DoSar(HSar* instr) {
+ return DoShift(Token::SAR, instr);
+}
+
+
+LInstruction* LChunkBuilder::DoShl(HShl* instr) {
+ return DoShift(Token::SHL, instr);
+}
+
+
+LInstruction* LChunkBuilder::DoBitwise(HBitwise* instr) {
+ if (instr->representation().IsSmiOrInteger32()) {
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ DCHECK(instr->CheckFlag(HValue::kTruncatingToInt32));
+
+ LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand());
+ LOperand* right = UseOrConstantAtStart(instr->BetterRightOperand());
+ return DefineAsRegister(new(zone()) LBitI(left, right));
+ } else {
+ return DoArithmeticT(instr->op(), instr);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoDivByPowerOf2I(HDiv* instr) {
+ DCHECK(instr->representation().IsSmiOrInteger32());
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ LOperand* dividend = UseRegister(instr->left());
+ int32_t divisor = instr->right()->GetInteger32Constant();
+ LInstruction* result = DefineAsRegister(new(zone()) LDivByPowerOf2I(
+ dividend, divisor));
+ if ((instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) ||
+ (instr->CheckFlag(HValue::kCanOverflow) && divisor == -1) ||
+ (!instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32) &&
+ divisor != 1 && divisor != -1)) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoDivByConstI(HDiv* instr) {
+ DCHECK(instr->representation().IsInteger32());
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ LOperand* dividend = UseRegister(instr->left());
+ int32_t divisor = instr->right()->GetInteger32Constant();
+ LInstruction* result = DefineAsRegister(new(zone()) LDivByConstI(
+ dividend, divisor));
+ if (divisor == 0 ||
+ (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) ||
+ !instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32)) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoDivI(HDiv* instr) {
+ DCHECK(instr->representation().IsSmiOrInteger32());
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ LOperand* dividend = UseRegister(instr->left());
+ LOperand* divisor = UseRegister(instr->right());
+ LOperand* temp = instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32)
+ ? NULL : TempRegister();
+ LInstruction* result =
+ DefineAsRegister(new(zone()) LDivI(dividend, divisor, temp));
+ if (instr->CheckFlag(HValue::kCanBeDivByZero) ||
+ instr->CheckFlag(HValue::kBailoutOnMinusZero) ||
+ (instr->CheckFlag(HValue::kCanOverflow) &&
+ !instr->CheckFlag(HValue::kAllUsesTruncatingToInt32)) ||
+ (!instr->IsMathFloorOfDiv() &&
+ !instr->CheckFlag(HValue::kAllUsesTruncatingToInt32))) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoDiv(HDiv* instr) {
+ if (instr->representation().IsSmiOrInteger32()) {
+ if (instr->RightIsPowerOf2()) {
+ return DoDivByPowerOf2I(instr);
+ } else if (instr->right()->IsConstant()) {
+ return DoDivByConstI(instr);
+ } else {
+ return DoDivI(instr);
+ }
+ } else if (instr->representation().IsDouble()) {
+ return DoArithmeticD(Token::DIV, instr);
+ } else {
+ return DoArithmeticT(Token::DIV, instr);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoFlooringDivByPowerOf2I(HMathFloorOfDiv* instr) {
+ LOperand* dividend = UseRegisterAtStart(instr->left());
+ int32_t divisor = instr->right()->GetInteger32Constant();
+ LInstruction* result = DefineAsRegister(new(zone()) LFlooringDivByPowerOf2I(
+ dividend, divisor));
+ if ((instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) ||
+ (instr->CheckFlag(HValue::kLeftCanBeMinInt) && divisor == -1)) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoFlooringDivByConstI(HMathFloorOfDiv* instr) {
+ DCHECK(instr->representation().IsInteger32());
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ LOperand* dividend = UseRegister(instr->left());
+ int32_t divisor = instr->right()->GetInteger32Constant();
+ LOperand* temp =
+ ((divisor > 0 && !instr->CheckFlag(HValue::kLeftCanBeNegative)) ||
+ (divisor < 0 && !instr->CheckFlag(HValue::kLeftCanBePositive))) ?
+ NULL : TempRegister();
+ LInstruction* result = DefineAsRegister(
+ new(zone()) LFlooringDivByConstI(dividend, divisor, temp));
+ if (divisor == 0 ||
+ (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0)) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoFlooringDivI(HMathFloorOfDiv* instr) {
+ DCHECK(instr->representation().IsSmiOrInteger32());
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ LOperand* dividend = UseRegister(instr->left());
+ LOperand* divisor = UseRegister(instr->right());
+ LInstruction* result =
+ DefineAsRegister(new (zone()) LFlooringDivI(dividend, divisor));
+ if (instr->CheckFlag(HValue::kCanBeDivByZero) ||
+ instr->CheckFlag(HValue::kBailoutOnMinusZero) ||
+ (instr->CheckFlag(HValue::kCanOverflow))) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoMathFloorOfDiv(HMathFloorOfDiv* instr) {
+ if (instr->RightIsPowerOf2()) {
+ return DoFlooringDivByPowerOf2I(instr);
+ } else if (instr->right()->IsConstant()) {
+ return DoFlooringDivByConstI(instr);
+ } else {
+ return DoFlooringDivI(instr);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoModByPowerOf2I(HMod* instr) {
+ DCHECK(instr->representation().IsSmiOrInteger32());
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ LOperand* dividend = UseRegisterAtStart(instr->left());
+ int32_t divisor = instr->right()->GetInteger32Constant();
+ LInstruction* result = DefineSameAsFirst(new(zone()) LModByPowerOf2I(
+ dividend, divisor));
+ if (instr->CheckFlag(HValue::kLeftCanBeNegative) &&
+ instr->CheckFlag(HValue::kBailoutOnMinusZero)) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoModByConstI(HMod* instr) {
+ DCHECK(instr->representation().IsSmiOrInteger32());
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ LOperand* dividend = UseRegister(instr->left());
+ int32_t divisor = instr->right()->GetInteger32Constant();
+ LInstruction* result = DefineAsRegister(new(zone()) LModByConstI(
+ dividend, divisor));
+ if (divisor == 0 || instr->CheckFlag(HValue::kBailoutOnMinusZero)) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoModI(HMod* instr) {
+ DCHECK(instr->representation().IsSmiOrInteger32());
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ LOperand* dividend = UseRegister(instr->left());
+ LOperand* divisor = UseRegister(instr->right());
+ LInstruction* result = DefineAsRegister(new(zone()) LModI(
+ dividend, divisor));
+ if (instr->CheckFlag(HValue::kCanBeDivByZero) ||
+ instr->CheckFlag(HValue::kBailoutOnMinusZero)) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoMod(HMod* instr) {
+ if (instr->representation().IsSmiOrInteger32()) {
+ return instr->RightIsPowerOf2() ? DoModByPowerOf2I(instr) : DoModI(instr);
+ } else if (instr->representation().IsDouble()) {
+ return DoArithmeticD(Token::MOD, instr);
+ } else {
+ return DoArithmeticT(Token::MOD, instr);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoMul(HMul* instr) {
+ if (instr->representation().IsSmiOrInteger32()) {
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ HValue* left = instr->BetterLeftOperand();
+ HValue* right = instr->BetterRightOperand();
+ LOperand* left_op;
+ LOperand* right_op;
+ bool can_overflow = instr->CheckFlag(HValue::kCanOverflow);
+ bool bailout_on_minus_zero = instr->CheckFlag(HValue::kBailoutOnMinusZero);
+
+ int32_t constant_value = 0;
+ if (right->IsConstant()) {
+ HConstant* constant = HConstant::cast(right);
+ constant_value = constant->Integer32Value();
+ // Constants -1, 0 and 1 can be optimized if the result can overflow.
+ // For other constants, it can be optimized only without overflow.
+ if (!can_overflow || ((constant_value >= -1) && (constant_value <= 1))) {
+ left_op = UseRegisterAtStart(left);
+ right_op = UseConstant(right);
+ } else {
+ if (bailout_on_minus_zero) {
+ left_op = UseRegister(left);
+ } else {
+ left_op = UseRegisterAtStart(left);
+ }
+ right_op = UseRegister(right);
+ }
+ } else {
+ if (bailout_on_minus_zero) {
+ left_op = UseRegister(left);
+ } else {
+ left_op = UseRegisterAtStart(left);
+ }
+ right_op = UseRegister(right);
+ }
+ LInstruction* result =
+ instr->representation().IsSmi()
+ ? DefineAsRegister(new (zone()) LMulS(left_op, right_op))
+ : DefineAsRegister(new (zone()) LMulI(left_op, right_op));
+ if (right_op->IsConstantOperand()
+ ? ((can_overflow && constant_value == -1) ||
+ (bailout_on_minus_zero && constant_value <= 0))
+ : (can_overflow || bailout_on_minus_zero)) {
+ AssignEnvironment(result);
+ }
+ return result;
+
+ } else if (instr->representation().IsDouble()) {
+ if (kArchVariant == kMips64r2) {
+ if (instr->HasOneUse() && instr->uses().value()->IsAdd()) {
+ HAdd* add = HAdd::cast(instr->uses().value());
+ if (instr == add->left()) {
+ // This mul is the lhs of an add. The add and mul will be folded
+ // into a multiply-add.
+ return NULL;
+ }
+ if (instr == add->right() && !add->left()->IsMul()) {
+ // This mul is the rhs of an add, where the lhs is not another mul.
+ // The add and mul will be folded into a multiply-add.
+ return NULL;
+ }
+ }
+ }
+ return DoArithmeticD(Token::MUL, instr);
+ } else {
+ return DoArithmeticT(Token::MUL, instr);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoSub(HSub* instr) {
+ if (instr->representation().IsSmiOrInteger32()) {
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ LOperand* left = UseRegisterAtStart(instr->left());
+ LOperand* right = UseRegisterOrConstantAtStart(instr->right());
+ LInstruction* result =
+ instr->representation().IsSmi()
+ ? DefineAsRegister(new (zone()) LSubS(left, right))
+ : DefineAsRegister(new (zone()) LSubI(left, right));
+ if (instr->CheckFlag(HValue::kCanOverflow)) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+ } else if (instr->representation().IsDouble()) {
+ return DoArithmeticD(Token::SUB, instr);
+ } else {
+ return DoArithmeticT(Token::SUB, instr);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoMultiplyAdd(HMul* mul, HValue* addend) {
+ LOperand* multiplier_op = UseRegisterAtStart(mul->left());
+ LOperand* multiplicand_op = UseRegisterAtStart(mul->right());
+ LOperand* addend_op = UseRegisterAtStart(addend);
+ return DefineSameAsFirst(new(zone()) LMultiplyAddD(addend_op, multiplier_op,
+ multiplicand_op));
+}
+
+
+LInstruction* LChunkBuilder::DoAdd(HAdd* instr) {
+ if (instr->representation().IsSmiOrInteger32()) {
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand());
+ LOperand* right = UseRegisterOrConstantAtStart(instr->BetterRightOperand());
+ LInstruction* result =
+ instr->representation().IsSmi()
+ ? DefineAsRegister(new (zone()) LAddS(left, right))
+ : DefineAsRegister(new (zone()) LAddI(left, right));
+ if (instr->CheckFlag(HValue::kCanOverflow)) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+ } else if (instr->representation().IsExternal()) {
+ DCHECK(instr->IsConsistentExternalRepresentation());
+ DCHECK(!instr->CheckFlag(HValue::kCanOverflow));
+ LOperand* left = UseRegisterAtStart(instr->left());
+ LOperand* right = UseRegisterOrConstantAtStart(instr->right());
+ return DefineAsRegister(new (zone()) LAddE(left, right));
+ } else if (instr->representation().IsDouble()) {
+ if (kArchVariant == kMips64r2) {
+ if (instr->left()->IsMul())
+ return DoMultiplyAdd(HMul::cast(instr->left()), instr->right());
+
+ if (instr->right()->IsMul()) {
+ DCHECK(!instr->left()->IsMul());
+ return DoMultiplyAdd(HMul::cast(instr->right()), instr->left());
+ }
+ }
+ return DoArithmeticD(Token::ADD, instr);
+ } else {
+ return DoArithmeticT(Token::ADD, instr);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoMathMinMax(HMathMinMax* instr) {
+ LOperand* left = NULL;
+ LOperand* right = NULL;
+ if (instr->representation().IsSmiOrInteger32()) {
+ DCHECK(instr->left()->representation().Equals(instr->representation()));
+ DCHECK(instr->right()->representation().Equals(instr->representation()));
+ left = UseRegisterAtStart(instr->BetterLeftOperand());
+ right = UseOrConstantAtStart(instr->BetterRightOperand());
+ } else {
+ DCHECK(instr->representation().IsDouble());
+ DCHECK(instr->left()->representation().IsDouble());
+ DCHECK(instr->right()->representation().IsDouble());
+ left = UseRegisterAtStart(instr->left());
+ right = UseRegisterAtStart(instr->right());
+ }
+ return DefineAsRegister(new(zone()) LMathMinMax(left, right));
+}
+
+
+LInstruction* LChunkBuilder::DoPower(HPower* instr) {
+ DCHECK(instr->representation().IsDouble());
+ // We call a C function for double power. It can't trigger a GC.
+ // We need to use fixed result register for the call.
+ Representation exponent_type = instr->right()->representation();
+ DCHECK(instr->left()->representation().IsDouble());
+ LOperand* left = UseFixedDouble(instr->left(), f2);
+ LOperand* right =
+ exponent_type.IsDouble()
+ ? UseFixedDouble(instr->right(), f4)
+ : UseFixed(instr->right(), MathPowTaggedDescriptor::exponent());
+ LPower* result = new(zone()) LPower(left, right);
+ return MarkAsCall(DefineFixedDouble(result, f0),
+ instr,
+ CAN_DEOPTIMIZE_EAGERLY);
+}
+
+
+LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) {
+ DCHECK(instr->left()->representation().IsTagged());
+ DCHECK(instr->right()->representation().IsTagged());
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* left = UseFixed(instr->left(), a1);
+ LOperand* right = UseFixed(instr->right(), a0);
+ LCmpT* result = new(zone()) LCmpT(context, left, right);
+ return MarkAsCall(DefineFixed(result, v0), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoCompareNumericAndBranch(
+ HCompareNumericAndBranch* instr) {
+ Representation r = instr->representation();
+ if (r.IsSmiOrInteger32()) {
+ DCHECK(instr->left()->representation().Equals(r));
+ DCHECK(instr->right()->representation().Equals(r));
+ LOperand* left = UseRegisterOrConstantAtStart(instr->left());
+ LOperand* right = UseRegisterOrConstantAtStart(instr->right());
+ return new(zone()) LCompareNumericAndBranch(left, right);
+ } else {
+ DCHECK(r.IsDouble());
+ DCHECK(instr->left()->representation().IsDouble());
+ DCHECK(instr->right()->representation().IsDouble());
+ LOperand* left = UseRegisterAtStart(instr->left());
+ LOperand* right = UseRegisterAtStart(instr->right());
+ return new(zone()) LCompareNumericAndBranch(left, right);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch(
+ HCompareObjectEqAndBranch* instr) {
+ LOperand* left = UseRegisterAtStart(instr->left());
+ LOperand* right = UseRegisterAtStart(instr->right());
+ return new(zone()) LCmpObjectEqAndBranch(left, right);
+}
+
+
+LInstruction* LChunkBuilder::DoCompareHoleAndBranch(
+ HCompareHoleAndBranch* instr) {
+ LOperand* value = UseRegisterAtStart(instr->value());
+ return new(zone()) LCmpHoleAndBranch(value);
+}
+
+
+LInstruction* LChunkBuilder::DoCompareMinusZeroAndBranch(
+ HCompareMinusZeroAndBranch* instr) {
+ LOperand* value = UseRegister(instr->value());
+ LOperand* scratch = TempRegister();
+ return new(zone()) LCompareMinusZeroAndBranch(value, scratch);
+}
+
+
+LInstruction* LChunkBuilder::DoIsStringAndBranch(HIsStringAndBranch* instr) {
+ DCHECK(instr->value()->representation().IsTagged());
+ LOperand* temp = TempRegister();
+ return new(zone()) LIsStringAndBranch(UseRegisterAtStart(instr->value()),
+ temp);
+}
+
+
+LInstruction* LChunkBuilder::DoIsSmiAndBranch(HIsSmiAndBranch* instr) {
+ DCHECK(instr->value()->representation().IsTagged());
+ return new(zone()) LIsSmiAndBranch(Use(instr->value()));
+}
+
+
+LInstruction* LChunkBuilder::DoIsUndetectableAndBranch(
+ HIsUndetectableAndBranch* instr) {
+ DCHECK(instr->value()->representation().IsTagged());
+ return new(zone()) LIsUndetectableAndBranch(
+ UseRegisterAtStart(instr->value()), TempRegister());
+}
+
+
+LInstruction* LChunkBuilder::DoStringCompareAndBranch(
+ HStringCompareAndBranch* instr) {
+ DCHECK(instr->left()->representation().IsTagged());
+ DCHECK(instr->right()->representation().IsTagged());
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* left = UseFixed(instr->left(), a1);
+ LOperand* right = UseFixed(instr->right(), a0);
+ LStringCompareAndBranch* result =
+ new(zone()) LStringCompareAndBranch(context, left, right);
+ return MarkAsCall(result, instr);
+}
+
+
+LInstruction* LChunkBuilder::DoHasInstanceTypeAndBranch(
+ HHasInstanceTypeAndBranch* instr) {
+ DCHECK(instr->value()->representation().IsTagged());
+ LOperand* value = UseRegisterAtStart(instr->value());
+ return new(zone()) LHasInstanceTypeAndBranch(value);
+}
+
+
+LInstruction* LChunkBuilder::DoGetCachedArrayIndex(
+ HGetCachedArrayIndex* instr) {
+ DCHECK(instr->value()->representation().IsTagged());
+ LOperand* value = UseRegisterAtStart(instr->value());
+
+ return DefineAsRegister(new(zone()) LGetCachedArrayIndex(value));
+}
+
+
+LInstruction* LChunkBuilder::DoHasCachedArrayIndexAndBranch(
+ HHasCachedArrayIndexAndBranch* instr) {
+ DCHECK(instr->value()->representation().IsTagged());
+ return new(zone()) LHasCachedArrayIndexAndBranch(
+ UseRegisterAtStart(instr->value()));
+}
+
+
+LInstruction* LChunkBuilder::DoClassOfTestAndBranch(
+ HClassOfTestAndBranch* instr) {
+ DCHECK(instr->value()->representation().IsTagged());
+ return new(zone()) LClassOfTestAndBranch(UseRegister(instr->value()),
+ TempRegister());
+}
+
+
+LInstruction* LChunkBuilder::DoMapEnumLength(HMapEnumLength* instr) {
+ LOperand* map = UseRegisterAtStart(instr->value());
+ return DefineAsRegister(new(zone()) LMapEnumLength(map));
+}
+
+
+LInstruction* LChunkBuilder::DoSeqStringGetChar(HSeqStringGetChar* instr) {
+ LOperand* string = UseRegisterAtStart(instr->string());
+ LOperand* index = UseRegisterOrConstantAtStart(instr->index());
+ return DefineAsRegister(new(zone()) LSeqStringGetChar(string, index));
+}
+
+
+LInstruction* LChunkBuilder::DoSeqStringSetChar(HSeqStringSetChar* instr) {
+ LOperand* string = UseRegisterAtStart(instr->string());
+ LOperand* index = FLAG_debug_code
+ ? UseRegisterAtStart(instr->index())
+ : UseRegisterOrConstantAtStart(instr->index());
+ LOperand* value = UseRegisterAtStart(instr->value());
+ LOperand* context = FLAG_debug_code ? UseFixed(instr->context(), cp) : NULL;
+ return new(zone()) LSeqStringSetChar(context, string, index, value);
+}
+
+
+LInstruction* LChunkBuilder::DoBoundsCheck(HBoundsCheck* instr) {
+ if (!FLAG_debug_code && instr->skip_check()) return NULL;
+ LOperand* index = UseRegisterOrConstantAtStart(instr->index());
+ LOperand* length = !index->IsConstantOperand()
+ ? UseRegisterOrConstantAtStart(instr->length())
+ : UseRegisterAtStart(instr->length());
+ LInstruction* result = new(zone()) LBoundsCheck(index, length);
+ if (!FLAG_debug_code || !instr->skip_check()) {
+ result = AssignEnvironment(result);
+ }
+return result;
+}
+
+
+LInstruction* LChunkBuilder::DoBoundsCheckBaseIndexInformation(
+ HBoundsCheckBaseIndexInformation* instr) {
+ UNREACHABLE();
+ return NULL;
+}
+
+
+LInstruction* LChunkBuilder::DoAbnormalExit(HAbnormalExit* instr) {
+ // The control instruction marking the end of a block that completed
+ // abruptly (e.g., threw an exception). There is nothing specific to do.
+ return NULL;
+}
+
+
+LInstruction* LChunkBuilder::DoUseConst(HUseConst* instr) {
+ return NULL;
+}
+
+
+LInstruction* LChunkBuilder::DoForceRepresentation(HForceRepresentation* bad) {
+ // All HForceRepresentation instructions should be eliminated in the
+ // representation change phase of Hydrogen.
+ UNREACHABLE();
+ return NULL;
+}
+
+
+LInstruction* LChunkBuilder::DoChange(HChange* instr) {
+ Representation from = instr->from();
+ Representation to = instr->to();
+ HValue* val = instr->value();
+ if (from.IsSmi()) {
+ if (to.IsTagged()) {
+ LOperand* value = UseRegister(val);
+ return DefineSameAsFirst(new(zone()) LDummyUse(value));
+ }
+ from = Representation::Tagged();
+ }
+ if (from.IsTagged()) {
+ if (to.IsDouble()) {
+ LOperand* value = UseRegister(val);
+ LInstruction* result = DefineAsRegister(new(zone()) LNumberUntagD(value));
+ if (!val->representation().IsSmi()) result = AssignEnvironment(result);
+ return result;
+ } else if (to.IsSmi()) {
+ LOperand* value = UseRegister(val);
+ if (val->type().IsSmi()) {
+ return DefineSameAsFirst(new(zone()) LDummyUse(value));
+ }
+ return AssignEnvironment(DefineSameAsFirst(new(zone()) LCheckSmi(value)));
+ } else {
+ DCHECK(to.IsInteger32());
+ if (val->type().IsSmi() || val->representation().IsSmi()) {
+ LOperand* value = UseRegisterAtStart(val);
+ return DefineAsRegister(new(zone()) LSmiUntag(value, false));
+ } else {
+ LOperand* value = UseRegister(val);
+ LOperand* temp1 = TempRegister();
+ LOperand* temp2 = TempDoubleRegister();
+ LInstruction* result =
+ DefineSameAsFirst(new(zone()) LTaggedToI(value, temp1, temp2));
+ if (!val->representation().IsSmi()) result = AssignEnvironment(result);
+ return result;
+ }
+ }
+ } else if (from.IsDouble()) {
+ if (to.IsTagged()) {
+ info()->MarkAsDeferredCalling();
+ LOperand* value = UseRegister(val);
+ LOperand* temp1 = TempRegister();
+ LOperand* temp2 = TempRegister();
+
+ LUnallocated* result_temp = TempRegister();
+ LNumberTagD* result = new(zone()) LNumberTagD(value, temp1, temp2);
+ return AssignPointerMap(Define(result, result_temp));
+ } else if (to.IsSmi()) {
+ LOperand* value = UseRegister(val);
+ return AssignEnvironment(
+ DefineAsRegister(new(zone()) LDoubleToSmi(value)));
+ } else {
+ DCHECK(to.IsInteger32());
+ LOperand* value = UseRegister(val);
+ LInstruction* result = DefineAsRegister(new(zone()) LDoubleToI(value));
+ if (!instr->CanTruncateToInt32()) result = AssignEnvironment(result);
+ return result;
+ }
+ } else if (from.IsInteger32()) {
+ info()->MarkAsDeferredCalling();
+ if (to.IsTagged()) {
+ if (val->CheckFlag(HInstruction::kUint32)) {
+ LOperand* value = UseRegisterAtStart(val);
+ LOperand* temp1 = TempRegister();
+ LOperand* temp2 = TempRegister();
+ LNumberTagU* result = new(zone()) LNumberTagU(value, temp1, temp2);
+ return AssignPointerMap(DefineAsRegister(result));
+ } else {
+ STATIC_ASSERT((kMinInt == Smi::kMinValue) &&
+ (kMaxInt == Smi::kMaxValue));
+ LOperand* value = UseRegisterAtStart(val);
+ return DefineAsRegister(new(zone()) LSmiTag(value));
+ }
+ } else if (to.IsSmi()) {
+ LOperand* value = UseRegister(val);
+ LInstruction* result = DefineAsRegister(new(zone()) LSmiTag(value));
+ if (instr->CheckFlag(HValue::kCanOverflow)) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+ } else {
+ DCHECK(to.IsDouble());
+ if (val->CheckFlag(HInstruction::kUint32)) {
+ return DefineAsRegister(new(zone()) LUint32ToDouble(UseRegister(val)));
+ } else {
+ return DefineAsRegister(new(zone()) LInteger32ToDouble(Use(val)));
+ }
+ }
+ }
+ UNREACHABLE();
+ return NULL;
+}
+
+
+LInstruction* LChunkBuilder::DoCheckHeapObject(HCheckHeapObject* instr) {
+ LOperand* value = UseRegisterAtStart(instr->value());
+ LInstruction* result = new(zone()) LCheckNonSmi(value);
+ if (!instr->value()->type().IsHeapObject()) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoCheckSmi(HCheckSmi* instr) {
+ LOperand* value = UseRegisterAtStart(instr->value());
+ return AssignEnvironment(new(zone()) LCheckSmi(value));
+}
+
+
+LInstruction* LChunkBuilder::DoCheckArrayBufferNotNeutered(
+ HCheckArrayBufferNotNeutered* instr) {
+ LOperand* view = UseRegisterAtStart(instr->value());
+ LCheckArrayBufferNotNeutered* result =
+ new (zone()) LCheckArrayBufferNotNeutered(view);
+ return AssignEnvironment(result);
+}
+
+
+LInstruction* LChunkBuilder::DoCheckInstanceType(HCheckInstanceType* instr) {
+ LOperand* value = UseRegisterAtStart(instr->value());
+ LInstruction* result = new(zone()) LCheckInstanceType(value);
+ return AssignEnvironment(result);
+}
+
+
+LInstruction* LChunkBuilder::DoCheckValue(HCheckValue* instr) {
+ LOperand* value = UseRegisterAtStart(instr->value());
+ return AssignEnvironment(new(zone()) LCheckValue(value));
+}
+
+
+LInstruction* LChunkBuilder::DoCheckMaps(HCheckMaps* instr) {
+ if (instr->IsStabilityCheck()) return new(zone()) LCheckMaps;
+ LOperand* value = UseRegisterAtStart(instr->value());
+ LInstruction* result = AssignEnvironment(new(zone()) LCheckMaps(value));
+ if (instr->HasMigrationTarget()) {
+ info()->MarkAsDeferredCalling();
+ result = AssignPointerMap(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoClampToUint8(HClampToUint8* instr) {
+ HValue* value = instr->value();
+ Representation input_rep = value->representation();
+ LOperand* reg = UseRegister(value);
+ if (input_rep.IsDouble()) {
+ // Revisit this decision, here and 8 lines below.
+ return DefineAsRegister(new(zone()) LClampDToUint8(reg,
+ TempDoubleRegister()));
+ } else if (input_rep.IsInteger32()) {
+ return DefineAsRegister(new(zone()) LClampIToUint8(reg));
+ } else {
+ DCHECK(input_rep.IsSmiOrTagged());
+ LClampTToUint8* result =
+ new(zone()) LClampTToUint8(reg, TempDoubleRegister());
+ return AssignEnvironment(DefineAsRegister(result));
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoDoubleBits(HDoubleBits* instr) {
+ HValue* value = instr->value();
+ DCHECK(value->representation().IsDouble());
+ return DefineAsRegister(new(zone()) LDoubleBits(UseRegister(value)));
+}
+
+
+LInstruction* LChunkBuilder::DoConstructDouble(HConstructDouble* instr) {
+ LOperand* lo = UseRegister(instr->lo());
+ LOperand* hi = UseRegister(instr->hi());
+ return DefineAsRegister(new(zone()) LConstructDouble(hi, lo));
+}
+
+
+LInstruction* LChunkBuilder::DoReturn(HReturn* instr) {
+ LOperand* context = info()->IsStub()
+ ? UseFixed(instr->context(), cp)
+ : NULL;
+ LOperand* parameter_count = UseRegisterOrConstant(instr->parameter_count());
+ return new(zone()) LReturn(UseFixed(instr->value(), v0), context,
+ parameter_count);
+}
+
+
+LInstruction* LChunkBuilder::DoConstant(HConstant* instr) {
+ Representation r = instr->representation();
+ if (r.IsSmi()) {
+ return DefineAsRegister(new(zone()) LConstantS);
+ } else if (r.IsInteger32()) {
+ return DefineAsRegister(new(zone()) LConstantI);
+ } else if (r.IsDouble()) {
+ return DefineAsRegister(new(zone()) LConstantD);
+ } else if (r.IsExternal()) {
+ return DefineAsRegister(new(zone()) LConstantE);
+ } else if (r.IsTagged()) {
+ return DefineAsRegister(new(zone()) LConstantT);
+ } else {
+ UNREACHABLE();
+ return NULL;
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoLoadGlobalGeneric(HLoadGlobalGeneric* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* global_object =
+ UseFixed(instr->global_object(), LoadDescriptor::ReceiverRegister());
+ LOperand* vector = NULL;
+ if (instr->HasVectorAndSlot()) {
+ vector = FixedTemp(LoadWithVectorDescriptor::VectorRegister());
+ }
+ LLoadGlobalGeneric* result =
+ new(zone()) LLoadGlobalGeneric(context, global_object, vector);
+ return MarkAsCall(DefineFixed(result, v0), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoLoadContextSlot(HLoadContextSlot* instr) {
+ LOperand* context = UseRegisterAtStart(instr->value());
+ LInstruction* result =
+ DefineAsRegister(new(zone()) LLoadContextSlot(context));
+ if (instr->RequiresHoleCheck() && instr->DeoptimizesOnHole()) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoStoreContextSlot(HStoreContextSlot* instr) {
+ LOperand* context;
+ LOperand* value;
+ if (instr->NeedsWriteBarrier()) {
+ context = UseTempRegister(instr->context());
+ value = UseTempRegister(instr->value());
+ } else {
+ context = UseRegister(instr->context());
+ value = UseRegister(instr->value());
+ }
+ LInstruction* result = new(zone()) LStoreContextSlot(context, value);
+ if (instr->RequiresHoleCheck() && instr->DeoptimizesOnHole()) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoLoadNamedField(HLoadNamedField* instr) {
+ LOperand* obj = UseRegisterAtStart(instr->object());
+ return DefineAsRegister(new(zone()) LLoadNamedField(obj));
+}
+
+
+LInstruction* LChunkBuilder::DoLoadNamedGeneric(HLoadNamedGeneric* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* object =
+ UseFixed(instr->object(), LoadDescriptor::ReceiverRegister());
+ LOperand* vector = NULL;
+ if (instr->HasVectorAndSlot()) {
+ vector = FixedTemp(LoadWithVectorDescriptor::VectorRegister());
+ }
+
+ LInstruction* result =
+ DefineFixed(new(zone()) LLoadNamedGeneric(context, object, vector), v0);
+ return MarkAsCall(result, instr);
+}
+
+
+LInstruction* LChunkBuilder::DoLoadFunctionPrototype(
+ HLoadFunctionPrototype* instr) {
+ return AssignEnvironment(DefineAsRegister(
+ new(zone()) LLoadFunctionPrototype(UseRegister(instr->function()))));
+}
+
+
+LInstruction* LChunkBuilder::DoLoadRoot(HLoadRoot* instr) {
+ return DefineAsRegister(new(zone()) LLoadRoot);
+}
+
+
+LInstruction* LChunkBuilder::DoLoadKeyed(HLoadKeyed* instr) {
+ DCHECK(instr->key()->representation().IsSmiOrInteger32());
+ ElementsKind elements_kind = instr->elements_kind();
+ LOperand* key = UseRegisterOrConstantAtStart(instr->key());
+ LInstruction* result = NULL;
+
+ if (!instr->is_fixed_typed_array()) {
+ LOperand* obj = NULL;
+ if (instr->representation().IsDouble()) {
+ obj = UseRegister(instr->elements());
+ } else {
+ DCHECK(instr->representation().IsSmiOrTagged() ||
+ instr->representation().IsInteger32());
+ obj = UseRegisterAtStart(instr->elements());
+ }
+ result = DefineAsRegister(new (zone()) LLoadKeyed(obj, key, nullptr));
+ } else {
+ DCHECK(
+ (instr->representation().IsInteger32() &&
+ !IsDoubleOrFloatElementsKind(elements_kind)) ||
+ (instr->representation().IsDouble() &&
+ IsDoubleOrFloatElementsKind(elements_kind)));
+ LOperand* backing_store = UseRegister(instr->elements());
+ LOperand* backing_store_owner = UseAny(instr->backing_store_owner());
+ result = DefineAsRegister(
+ new (zone()) LLoadKeyed(backing_store, key, backing_store_owner));
+ }
+
+ bool needs_environment;
+ if (instr->is_fixed_typed_array()) {
+ // see LCodeGen::DoLoadKeyedExternalArray
+ needs_environment = elements_kind == UINT32_ELEMENTS &&
+ !instr->CheckFlag(HInstruction::kUint32);
+ } else {
+ // see LCodeGen::DoLoadKeyedFixedDoubleArray and
+ // LCodeGen::DoLoadKeyedFixedArray
+ needs_environment =
+ instr->RequiresHoleCheck() ||
+ (instr->hole_mode() == CONVERT_HOLE_TO_UNDEFINED && info()->IsStub());
+ }
+
+ if (needs_environment) {
+ result = AssignEnvironment(result);
+ }
+ return result;
+}
+
+
+LInstruction* LChunkBuilder::DoLoadKeyedGeneric(HLoadKeyedGeneric* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* object =
+ UseFixed(instr->object(), LoadDescriptor::ReceiverRegister());
+ LOperand* key = UseFixed(instr->key(), LoadDescriptor::NameRegister());
+ LOperand* vector = NULL;
+ if (instr->HasVectorAndSlot()) {
+ vector = FixedTemp(LoadWithVectorDescriptor::VectorRegister());
+ }
+
+ LInstruction* result =
+ DefineFixed(new(zone()) LLoadKeyedGeneric(context, object, key, vector),
+ v0);
+ return MarkAsCall(result, instr);
+}
+
+
+LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) {
+ if (!instr->is_fixed_typed_array()) {
+ DCHECK(instr->elements()->representation().IsTagged());
+ bool needs_write_barrier = instr->NeedsWriteBarrier();
+ LOperand* object = NULL;
+ LOperand* val = NULL;
+ LOperand* key = NULL;
+
+ if (instr->value()->representation().IsDouble()) {
+ object = UseRegisterAtStart(instr->elements());
+ key = UseRegisterOrConstantAtStart(instr->key());
+ val = UseRegister(instr->value());
+ } else {
+ DCHECK(instr->value()->representation().IsSmiOrTagged() ||
+ instr->value()->representation().IsInteger32());
+ if (needs_write_barrier) {
+ object = UseTempRegister(instr->elements());
+ val = UseTempRegister(instr->value());
+ key = UseTempRegister(instr->key());
+ } else {
+ object = UseRegisterAtStart(instr->elements());
+ val = UseRegisterAtStart(instr->value());
+ key = UseRegisterOrConstantAtStart(instr->key());
+ }
+ }
+
+ return new (zone()) LStoreKeyed(object, key, val, nullptr);
+ }
+
+ DCHECK(
+ (instr->value()->representation().IsInteger32() &&
+ !IsDoubleOrFloatElementsKind(instr->elements_kind())) ||
+ (instr->value()->representation().IsDouble() &&
+ IsDoubleOrFloatElementsKind(instr->elements_kind())));
+ DCHECK(instr->elements()->representation().IsExternal());
+ LOperand* val = UseRegister(instr->value());
+ LOperand* key = UseRegisterOrConstantAtStart(instr->key());
+ LOperand* backing_store = UseRegister(instr->elements());
+ LOperand* backing_store_owner = UseAny(instr->backing_store_owner());
+ return new (zone()) LStoreKeyed(backing_store, key, val, backing_store_owner);
+}
+
+
+LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* obj =
+ UseFixed(instr->object(), StoreDescriptor::ReceiverRegister());
+ LOperand* key = UseFixed(instr->key(), StoreDescriptor::NameRegister());
+ LOperand* val = UseFixed(instr->value(), StoreDescriptor::ValueRegister());
+
+ DCHECK(instr->object()->representation().IsTagged());
+ DCHECK(instr->key()->representation().IsTagged());
+ DCHECK(instr->value()->representation().IsTagged());
+
+ LOperand* slot = NULL;
+ LOperand* vector = NULL;
+ if (instr->HasVectorAndSlot()) {
+ slot = FixedTemp(VectorStoreICDescriptor::SlotRegister());
+ vector = FixedTemp(VectorStoreICDescriptor::VectorRegister());
+ }
+
+ LStoreKeyedGeneric* result =
+ new (zone()) LStoreKeyedGeneric(context, obj, key, val, slot, vector);
+ return MarkAsCall(result, instr);
+}
+
+
+LInstruction* LChunkBuilder::DoTransitionElementsKind(
+ HTransitionElementsKind* instr) {
+ if (IsSimpleMapChangeTransition(instr->from_kind(), instr->to_kind())) {
+ LOperand* object = UseRegister(instr->object());
+ LOperand* new_map_reg = TempRegister();
+ LTransitionElementsKind* result =
+ new(zone()) LTransitionElementsKind(object, NULL, new_map_reg);
+ return result;
+ } else {
+ LOperand* object = UseFixed(instr->object(), a0);
+ LOperand* context = UseFixed(instr->context(), cp);
+ LTransitionElementsKind* result =
+ new(zone()) LTransitionElementsKind(object, context, NULL);
+ return MarkAsCall(result, instr);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoTrapAllocationMemento(
+ HTrapAllocationMemento* instr) {
+ LOperand* object = UseRegister(instr->object());
+ LOperand* temp = TempRegister();
+ LTrapAllocationMemento* result =
+ new(zone()) LTrapAllocationMemento(object, temp);
+ return AssignEnvironment(result);
+}
+
+
+LInstruction* LChunkBuilder::DoMaybeGrowElements(HMaybeGrowElements* instr) {
+ info()->MarkAsDeferredCalling();
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* object = Use(instr->object());
+ LOperand* elements = Use(instr->elements());
+ LOperand* key = UseRegisterOrConstant(instr->key());
+ LOperand* current_capacity = UseRegisterOrConstant(instr->current_capacity());
+
+ LMaybeGrowElements* result = new (zone())
+ LMaybeGrowElements(context, object, elements, key, current_capacity);
+ DefineFixed(result, v0);
+ return AssignPointerMap(AssignEnvironment(result));
+}
+
+
+LInstruction* LChunkBuilder::DoStoreNamedField(HStoreNamedField* instr) {
+ bool is_in_object = instr->access().IsInobject();
+ bool needs_write_barrier = instr->NeedsWriteBarrier();
+ bool needs_write_barrier_for_map = instr->has_transition() &&
+ instr->NeedsWriteBarrierForMap();
+
+ LOperand* obj;
+ if (needs_write_barrier) {
+ obj = is_in_object
+ ? UseRegister(instr->object())
+ : UseTempRegister(instr->object());
+ } else {
+ obj = needs_write_barrier_for_map
+ ? UseRegister(instr->object())
+ : UseRegisterAtStart(instr->object());
+ }
+
+ LOperand* val;
+ if (needs_write_barrier) {
+ val = UseTempRegister(instr->value());
+ } else if (instr->field_representation().IsDouble()) {
+ val = UseRegisterAtStart(instr->value());
+ } else {
+ val = UseRegister(instr->value());
+ }
+
+ // We need a temporary register for write barrier of the map field.
+ LOperand* temp = needs_write_barrier_for_map ? TempRegister() : NULL;
+
+ return new(zone()) LStoreNamedField(obj, val, temp);
+}
+
+
+LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* obj =
+ UseFixed(instr->object(), StoreDescriptor::ReceiverRegister());
+ LOperand* val = UseFixed(instr->value(), StoreDescriptor::ValueRegister());
+ LOperand* slot = NULL;
+ LOperand* vector = NULL;
+ if (instr->HasVectorAndSlot()) {
+ slot = FixedTemp(VectorStoreICDescriptor::SlotRegister());
+ vector = FixedTemp(VectorStoreICDescriptor::VectorRegister());
+ }
+
+ LStoreNamedGeneric* result =
+ new (zone()) LStoreNamedGeneric(context, obj, val, slot, vector);
+ return MarkAsCall(result, instr);
+}
+
+
+LInstruction* LChunkBuilder::DoStringAdd(HStringAdd* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* left = UseFixed(instr->left(), a1);
+ LOperand* right = UseFixed(instr->right(), a0);
+ return MarkAsCall(
+ DefineFixed(new(zone()) LStringAdd(context, left, right), v0),
+ instr);
+}
+
+
+LInstruction* LChunkBuilder::DoStringCharCodeAt(HStringCharCodeAt* instr) {
+ LOperand* string = UseTempRegister(instr->string());
+ LOperand* index = UseTempRegister(instr->index());
+ LOperand* context = UseAny(instr->context());
+ LStringCharCodeAt* result =
+ new(zone()) LStringCharCodeAt(context, string, index);
+ return AssignPointerMap(DefineAsRegister(result));
+}
+
+
+LInstruction* LChunkBuilder::DoStringCharFromCode(HStringCharFromCode* instr) {
+ LOperand* char_code = UseRegister(instr->value());
+ LOperand* context = UseAny(instr->context());
+ LStringCharFromCode* result =
+ new(zone()) LStringCharFromCode(context, char_code);
+ return AssignPointerMap(DefineAsRegister(result));
+}
+
+
+LInstruction* LChunkBuilder::DoAllocate(HAllocate* instr) {
+ info()->MarkAsDeferredCalling();
+ LOperand* context = UseAny(instr->context());
+ LOperand* size = UseRegisterOrConstant(instr->size());
+ LOperand* temp1 = TempRegister();
+ LOperand* temp2 = TempRegister();
+ LAllocate* result = new(zone()) LAllocate(context, size, temp1, temp2);
+ return AssignPointerMap(DefineAsRegister(result));
+}
+
+
+LInstruction* LChunkBuilder::DoOsrEntry(HOsrEntry* instr) {
+ DCHECK(argument_count_ == 0);
+ allocator_->MarkAsOsrEntry();
+ current_block_->last_environment()->set_ast_id(instr->ast_id());
+ return AssignEnvironment(new(zone()) LOsrEntry);
+}
+
+
+LInstruction* LChunkBuilder::DoParameter(HParameter* instr) {
+ LParameter* result = new(zone()) LParameter;
+ if (instr->kind() == HParameter::STACK_PARAMETER) {
+ int spill_index = chunk()->GetParameterStackSlot(instr->index());
+ return DefineAsSpilled(result, spill_index);
+ } else {
+ DCHECK(info()->IsStub());
+ CallInterfaceDescriptor descriptor =
+ info()->code_stub()->GetCallInterfaceDescriptor();
+ int index = static_cast<int>(instr->index());
+ Register reg = descriptor.GetRegisterParameter(index);
+ return DefineFixed(result, reg);
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoUnknownOSRValue(HUnknownOSRValue* instr) {
+ // Use an index that corresponds to the location in the unoptimized frame,
+ // which the optimized frame will subsume.
+ int env_index = instr->index();
+ int spill_index = 0;
+ if (instr->environment()->is_parameter_index(env_index)) {
+ spill_index = chunk()->GetParameterStackSlot(env_index);
+ } else {
+ spill_index = env_index - instr->environment()->first_local_index();
+ if (spill_index > LUnallocated::kMaxFixedSlotIndex) {
+ Retry(kTooManySpillSlotsNeededForOSR);
+ spill_index = 0;
+ }
+ }
+ return DefineAsSpilled(new(zone()) LUnknownOSRValue, spill_index);
+}
+
+
+LInstruction* LChunkBuilder::DoCallStub(HCallStub* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ return MarkAsCall(DefineFixed(new(zone()) LCallStub(context), v0), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoArgumentsObject(HArgumentsObject* instr) {
+ // There are no real uses of the arguments object.
+ // arguments.length and element access are supported directly on
+ // stack arguments, and any real arguments object use causes a bailout.
+ // So this value is never used.
+ return NULL;
+}
+
+
+LInstruction* LChunkBuilder::DoCapturedObject(HCapturedObject* instr) {
+ instr->ReplayEnvironment(current_block_->last_environment());
+
+ // There are no real uses of a captured object.
+ return NULL;
+}
+
+
+LInstruction* LChunkBuilder::DoAccessArgumentsAt(HAccessArgumentsAt* instr) {
+ info()->MarkAsRequiresFrame();
+ LOperand* args = UseRegister(instr->arguments());
+ LOperand* length = UseRegisterOrConstantAtStart(instr->length());
+ LOperand* index = UseRegisterOrConstantAtStart(instr->index());
+ return DefineAsRegister(new(zone()) LAccessArgumentsAt(args, length, index));
+}
+
+
+LInstruction* LChunkBuilder::DoToFastProperties(HToFastProperties* instr) {
+ LOperand* object = UseFixed(instr->value(), a0);
+ LToFastProperties* result = new(zone()) LToFastProperties(object);
+ return MarkAsCall(DefineFixed(result, v0), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoTypeof(HTypeof* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* value = UseFixed(instr->value(), a3);
+ LTypeof* result = new (zone()) LTypeof(context, value);
+ return MarkAsCall(DefineFixed(result, v0), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoTypeofIsAndBranch(HTypeofIsAndBranch* instr) {
+ return new(zone()) LTypeofIsAndBranch(UseTempRegister(instr->value()));
+}
+
+
+LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) {
+ instr->ReplayEnvironment(current_block_->last_environment());
+ return NULL;
+}
+
+
+LInstruction* LChunkBuilder::DoStackCheck(HStackCheck* instr) {
+ if (instr->is_function_entry()) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ return MarkAsCall(new(zone()) LStackCheck(context), instr);
+ } else {
+ DCHECK(instr->is_backwards_branch());
+ LOperand* context = UseAny(instr->context());
+ return AssignEnvironment(
+ AssignPointerMap(new(zone()) LStackCheck(context)));
+ }
+}
+
+
+LInstruction* LChunkBuilder::DoEnterInlined(HEnterInlined* instr) {
+ HEnvironment* outer = current_block_->last_environment();
+ outer->set_ast_id(instr->ReturnId());
+ HConstant* undefined = graph()->GetConstantUndefined();
+ HEnvironment* inner = outer->CopyForInlining(instr->closure(),
+ instr->arguments_count(),
+ instr->function(),
+ undefined,
+ instr->inlining_kind());
+ // Only replay binding of arguments object if it wasn't removed from graph.
+ if (instr->arguments_var() != NULL && instr->arguments_object()->IsLinked()) {
+ inner->Bind(instr->arguments_var(), instr->arguments_object());
+ }
+ inner->BindContext(instr->closure_context());
+ inner->set_entry(instr);
+ current_block_->UpdateEnvironment(inner);
+ chunk_->AddInlinedFunction(instr->shared());
+ return NULL;
+}
+
+
+LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) {
+ LInstruction* pop = NULL;
+
+ HEnvironment* env = current_block_->last_environment();
+
+ if (env->entry()->arguments_pushed()) {
+ int argument_count = env->arguments_environment()->parameter_count();
+ pop = new(zone()) LDrop(argument_count);
+ DCHECK(instr->argument_delta() == -argument_count);
+ }
+
+ HEnvironment* outer = current_block_->last_environment()->
+ DiscardInlined(false);
+ current_block_->UpdateEnvironment(outer);
+
+ return pop;
+}
+
+
+LInstruction* LChunkBuilder::DoForInPrepareMap(HForInPrepareMap* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* object = UseFixed(instr->enumerable(), a0);
+ LForInPrepareMap* result = new(zone()) LForInPrepareMap(context, object);
+ return MarkAsCall(DefineFixed(result, v0), instr, CAN_DEOPTIMIZE_EAGERLY);
+}
+
+
+LInstruction* LChunkBuilder::DoForInCacheArray(HForInCacheArray* instr) {
+ LOperand* map = UseRegister(instr->map());
+ return AssignEnvironment(DefineAsRegister(new(zone()) LForInCacheArray(map)));
+}
+
+
+LInstruction* LChunkBuilder::DoCheckMapValue(HCheckMapValue* instr) {
+ LOperand* value = UseRegisterAtStart(instr->value());
+ LOperand* map = UseRegisterAtStart(instr->map());
+ return AssignEnvironment(new(zone()) LCheckMapValue(value, map));
+}
+
+
+LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) {
+ LOperand* object = UseRegister(instr->object());
+ LOperand* index = UseTempRegister(instr->index());
+ LLoadFieldByIndex* load = new(zone()) LLoadFieldByIndex(object, index);
+ LInstruction* result = DefineSameAsFirst(load);
+ return AssignPointerMap(result);
+}
+
+
+LInstruction* LChunkBuilder::DoStoreFrameContext(HStoreFrameContext* instr) {
+ LOperand* context = UseRegisterAtStart(instr->context());
+ return new(zone()) LStoreFrameContext(context);
+}
+
+
+LInstruction* LChunkBuilder::DoAllocateBlockContext(
+ HAllocateBlockContext* instr) {
+ LOperand* context = UseFixed(instr->context(), cp);
+ LOperand* function = UseRegisterAtStart(instr->function());
+ LAllocateBlockContext* result =
+ new(zone()) LAllocateBlockContext(context, function);
+ return MarkAsCall(DefineFixed(result, cp), instr);
+}
+
+
+} // namespace internal
+} // namespace v8
+
+#endif // V8_TARGET_ARCH_MIPS64