| // Copyright 2012 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "v8.h" |
| |
| #if V8_TARGET_ARCH_X64 |
| |
| #include "lithium-allocator-inl.h" |
| #include "x64/lithium-x64.h" |
| #include "x64/lithium-codegen-x64.h" |
| #include "hydrogen-osr.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. |
| ASSERT(Output() == NULL || |
| LUnallocated::cast(Output())->HasFixedPolicy() || |
| !LUnallocated::cast(Output())->HasRegisterPolicy()); |
| for (UseIterator it(this); !it.Done(); it.Advance()) { |
| LUnallocated* operand = LUnallocated::cast(it.Current()); |
| ASSERT(operand->HasFixedPolicy() || |
| operand->IsUsedAtStart()); |
| } |
| for (TempIterator it(this); !it.Done(); it.Advance()) { |
| LUnallocated* operand = LUnallocated::cast(it.Current()); |
| ASSERT(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 "sal-t"; |
| case Token::SAR: return "sar-t"; |
| case Token::SHR: return "shr-t"; |
| default: |
| UNREACHABLE(); |
| return NULL; |
| } |
| } |
| |
| |
| bool LGoto::HasInterestingComment(LCodeGen* gen) const { |
| return !gen->IsNextEmittedBlock(block_id()); |
| } |
| |
| |
| template<int R> |
| bool LTemplateResultInstruction<R>::MustSignExtendResult( |
| LPlatformChunk* chunk) const { |
| HValue* hvalue = this->hydrogen_value(); |
| |
| if (hvalue == NULL) return false; |
| if (!hvalue->representation().IsInteger32()) return false; |
| if (hvalue->HasRange() && !hvalue->range()->CanBeNegative()) return false; |
| |
| return chunk->GetDehoistedKeyIds()->Contains(hvalue->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); |
| } |
| |
| |
| 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 LIsObjectAndBranch::PrintDataTo(StringStream* stream) { |
| stream->Add("if is_object("); |
| value()->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 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 LCallNew::PrintDataTo(StringStream* stream) { |
| stream->Add("= "); |
| constructor()->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); |
| } |
| |
| |
| int LPlatformChunk::GetNextSpillIndex(RegisterKind kind) { |
| return spill_slot_count_++; |
| } |
| |
| |
| LOperand* LPlatformChunk::GetNextSpillSlot(RegisterKind kind) { |
| // All stack slots are Double stack slots on x64. |
| // Alternatively, at some point, start using half-size |
| // stack slots for int32 values. |
| int index = GetNextSpillIndex(kind); |
| if (kind == DOUBLE_REGISTERS) { |
| return LDoubleStackSlot::Create(index, zone()); |
| } else { |
| ASSERT(kind == GENERAL_REGISTERS); |
| return LStackSlot::Create(index, zone()); |
| } |
| } |
| |
| |
| void LStoreNamedField::PrintDataTo(StringStream* stream) { |
| object()->PrintTo(stream); |
| hydrogen()->access().PrintTo(stream); |
| stream->Add(" <- "); |
| 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]", additional_index()); |
| } else { |
| stream->Add("]"); |
| } |
| } |
| |
| |
| void LStoreKeyed::PrintDataTo(StringStream* stream) { |
| elements()->PrintTo(stream); |
| stream->Add("["); |
| key()->PrintTo(stream); |
| if (hydrogen()->IsDehoisted()) { |
| stream->Add(" + %d] <-", additional_index()); |
| } else { |
| stream->Add("] <- "); |
| } |
| |
| if (value() == NULL) { |
| ASSERT(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()); |
| } |
| |
| |
| LPlatformChunk* LChunkBuilder::Build() { |
| ASSERT(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_; |
| } |
| |
| |
| void LCodeGen::Abort(BailoutReason reason) { |
| info()->set_bailout_reason(reason); |
| status_ = ABORTED; |
| } |
| |
| |
| LUnallocated* LChunkBuilder::ToUnallocated(Register reg) { |
| return new(zone()) LUnallocated(LUnallocated::FIXED_REGISTER, |
| Register::ToAllocationIndex(reg)); |
| } |
| |
| |
| LUnallocated* LChunkBuilder::ToUnallocated(XMMRegister reg) { |
| return new(zone()) LUnallocated(LUnallocated::FIXED_DOUBLE_REGISTER, |
| XMMRegister::ToAllocationIndex(reg)); |
| } |
| |
| |
| LOperand* LChunkBuilder::UseFixed(HValue* value, Register fixed_register) { |
| return Use(value, ToUnallocated(fixed_register)); |
| } |
| |
| |
| LOperand* LChunkBuilder::UseFixedDouble(HValue* value, XMMRegister 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::UseTempRegisterOrConstant(HValue* value) { |
| return value->IsConstant() |
| ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| : UseTempRegister(value); |
| } |
| |
| |
| 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, |
| XMMRegister 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); |
| } |
| |
| return instr; |
| } |
| |
| |
| LInstruction* LChunkBuilder::AssignPointerMap(LInstruction* instr) { |
| ASSERT(!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; |
| } |
| |
| |
| LOperand* LChunkBuilder::FixedTemp(Register reg) { |
| LUnallocated* operand = ToUnallocated(reg); |
| ASSERT(operand->HasFixedPolicy()); |
| return operand; |
| } |
| |
| |
| LOperand* LChunkBuilder::FixedTemp(XMMRegister reg) { |
| LUnallocated* operand = ToUnallocated(reg); |
| ASSERT(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()) { |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(instr->right()->representation().Equals(instr->representation())); |
| LOperand* left = UseRegisterAtStart(instr->left()); |
| |
| HValue* right_value = instr->right(); |
| LOperand* right = NULL; |
| int constant_value = 0; |
| if (right_value->IsConstant()) { |
| HConstant* constant = HConstant::cast(right_value); |
| right = chunk_->DefineConstantOperand(constant); |
| constant_value = constant->Integer32Value() & 0x1f; |
| } else { |
| right = UseFixed(right_value, rcx); |
| } |
| |
| // Shift operations can only deoptimize if we do a logical shift by 0 and |
| // the result cannot be truncated to int32. |
| bool does_deopt = false; |
| if (op == Token::SHR && constant_value == 0) { |
| if (FLAG_opt_safe_uint32_operations) { |
| does_deopt = !instr->CheckFlag(HInstruction::kUint32); |
| } else { |
| does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToInt32); |
| } |
| } |
| |
| LInstruction* result = |
| DefineSameAsFirst(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) { |
| ASSERT(instr->representation().IsDouble()); |
| ASSERT(instr->left()->representation().IsDouble()); |
| ASSERT(instr->right()->representation().IsDouble()); |
| if (op == Token::MOD) { |
| LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| LOperand* right = UseFixedDouble(instr->BetterRightOperand(), xmm1); |
| LArithmeticD* result = new(zone()) LArithmeticD(op, left, right); |
| return MarkAsCall(DefineSameAsFirst(result), instr); |
| } else { |
| LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| LOperand* right = UseRegisterAtStart(instr->BetterRightOperand()); |
| LArithmeticD* result = new(zone()) LArithmeticD(op, left, right); |
| return DefineSameAsFirst(result); |
| } |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoArithmeticT(Token::Value op, |
| HBinaryOperation* instr) { |
| HValue* left = instr->left(); |
| HValue* right = instr->right(); |
| ASSERT(left->representation().IsTagged()); |
| ASSERT(right->representation().IsTagged()); |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* left_operand = UseFixed(left, rdx); |
| LOperand* right_operand = UseFixed(right, rax); |
| LArithmeticT* result = |
| new(zone()) LArithmeticT(op, context, left_operand, right_operand); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| void LChunkBuilder::DoBasicBlock(HBasicBlock* block, HBasicBlock* next_block) { |
| ASSERT(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. |
| ASSERT(block->phis()->length() == 0); |
| HBasicBlock* pred = block->predecessors()->at(0); |
| HEnvironment* last_environment = pred->last_environment(); |
| ASSERT(last_environment != NULL); |
| // Only copy the environment, if it is later used again. |
| if (pred->end()->SecondSuccessor() == NULL) { |
| ASSERT(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); |
| ASSERT(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 { |
| ASSERT(!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 { |
| instr = current->CompileToLithium(this); |
| } |
| |
| argument_count_ += current->argument_delta(); |
| ASSERT(argument_count_ >= 0); |
| |
| if (instr != NULL) { |
| // Associate the hydrogen instruction first, since we may need it for |
| // the ClobbersRegisters() or ClobbersDoubleRegisters() calls below. |
| instr->set_hydrogen_value(current); |
| |
| #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())) { |
| 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; |
| } |
| ASSERT(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()) { |
| HValue* hydrogen_value_for_lazy_bailout = current; |
| LInstruction* instruction_needing_environment = NULL; |
| if (current->HasObservableSideEffects()) { |
| HSimulate* sim = HSimulate::cast(current->next()); |
| instruction_needing_environment = instr; |
| 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_); |
| if (instruction_needing_environment != NULL) { |
| // Store the lazy deopt environment with the instruction if needed. |
| // Right now it is only used for LInstanceOfKnownGlobal. |
| instruction_needing_environment-> |
| SetDeferredLazyDeoptimizationEnvironment(bailout->environment()); |
| } |
| } |
| } |
| current_instruction_ = old_current; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoGoto(HGoto* instr) { |
| return new(zone()) LGoto(instr->FirstSuccessor()); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoDebugBreak(HDebugBreak* instr) { |
| return new(zone()) LDebugBreak(); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoBranch(HBranch* instr) { |
| LInstruction* goto_instr = CheckElideControlInstruction(instr); |
| if (goto_instr != NULL) return goto_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) { |
| LInstruction* goto_instr = CheckElideControlInstruction(instr); |
| if (goto_instr != NULL) return goto_instr; |
| |
| ASSERT(instr->value()->representation().IsTagged()); |
| LOperand* value = UseRegisterAtStart(instr->value()); |
| return new(zone()) LCmpMapAndBranch(value); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoArgumentsLength(HArgumentsLength* length) { |
| info()->MarkAsRequiresFrame(); |
| return DefineAsRegister(new(zone()) LArgumentsLength(Use(length->value()))); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoArgumentsElements(HArgumentsElements* elems) { |
| info()->MarkAsRequiresFrame(); |
| return DefineAsRegister(new(zone()) LArgumentsElements); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoInstanceOf(HInstanceOf* instr) { |
| LOperand* left = UseFixed(instr->left(), rax); |
| LOperand* right = UseFixed(instr->right(), rdx); |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LInstanceOf* result = new(zone()) LInstanceOf(context, left, right); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoInstanceOfKnownGlobal( |
| HInstanceOfKnownGlobal* instr) { |
| LInstanceOfKnownGlobal* result = |
| new(zone()) LInstanceOfKnownGlobal(UseFixed(instr->context(), rsi), |
| UseFixed(instr->left(), rax), |
| FixedTemp(rdi)); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) { |
| LOperand* receiver = UseRegister(instr->receiver()); |
| LOperand* function = UseRegisterAtStart(instr->function()); |
| LWrapReceiver* result = new(zone()) LWrapReceiver(receiver, function); |
| return AssignEnvironment(DefineSameAsFirst(result)); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoApplyArguments(HApplyArguments* instr) { |
| LOperand* function = UseFixed(instr->function(), rdi); |
| LOperand* receiver = UseFixed(instr->receiver(), rax); |
| LOperand* length = UseFixed(instr->length(), rbx); |
| LOperand* elements = UseFixed(instr->elements(), rcx); |
| LApplyArguments* result = new(zone()) LApplyArguments(function, |
| receiver, |
| length, |
| elements); |
| return MarkAsCall(DefineFixed(result, rax), instr, CAN_DEOPTIMIZE_EAGERLY); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoPushArgument(HPushArgument* instr) { |
| LOperand* argument = UseOrConstant(instr->argument()); |
| return new(zone()) LPushArgument(argument); |
| } |
| |
| |
| 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, rsi); |
| } |
| |
| return DefineAsRegister(new(zone()) LContext); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoDeclareGlobals(HDeclareGlobals* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| return MarkAsCall(new(zone()) LDeclareGlobals(context), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCallJSFunction( |
| HCallJSFunction* instr) { |
| LOperand* function = UseFixed(instr->function(), rdi); |
| |
| LCallJSFunction* result = new(zone()) LCallJSFunction(function); |
| |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCallWithDescriptor( |
| HCallWithDescriptor* instr) { |
| const CallInterfaceDescriptor* descriptor = instr->descriptor(); |
| |
| LOperand* target = UseRegisterOrConstantAtStart(instr->target()); |
| ZoneList<LOperand*> ops(instr->OperandCount(), zone()); |
| ops.Add(target, zone()); |
| for (int i = 1; i < instr->OperandCount(); i++) { |
| LOperand* op = UseFixed(instr->OperandAt(i), |
| descriptor->GetParameterRegister(i - 1)); |
| ops.Add(op, zone()); |
| } |
| |
| LCallWithDescriptor* result = new(zone()) LCallWithDescriptor( |
| descriptor, ops, zone()); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoInvokeFunction(HInvokeFunction* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* function = UseFixed(instr->function(), rdi); |
| LInvokeFunction* result = new(zone()) LInvokeFunction(context, function); |
| return MarkAsCall(DefineFixed(result, rax), instr, CANNOT_DEOPTIMIZE_EAGERLY); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoUnaryMathOperation(HUnaryMathOperation* instr) { |
| switch (instr->op()) { |
| case kMathFloor: return DoMathFloor(instr); |
| case kMathRound: return DoMathRound(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::DoMathFloor(HUnaryMathOperation* instr) { |
| LOperand* input = UseRegisterAtStart(instr->value()); |
| LMathFloor* result = new(zone()) LMathFloor(input); |
| return AssignEnvironment(DefineAsRegister(result)); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoMathRound(HUnaryMathOperation* instr) { |
| LOperand* input = UseRegister(instr->value()); |
| LOperand* temp = FixedTemp(xmm4); |
| LMathRound* result = new(zone()) LMathRound(input, temp); |
| return AssignEnvironment(DefineAsRegister(result)); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoMathAbs(HUnaryMathOperation* instr) { |
| LOperand* context = UseAny(instr->context()); |
| LOperand* input = UseRegisterAtStart(instr->value()); |
| LInstruction* result = |
| DefineSameAsFirst(new(zone()) LMathAbs(context, input)); |
| Representation r = instr->value()->representation(); |
| if (!r.IsDouble() && !r.IsSmiOrInteger32()) result = AssignPointerMap(result); |
| if (!r.IsDouble()) result = AssignEnvironment(result); |
| return result; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoMathLog(HUnaryMathOperation* instr) { |
| ASSERT(instr->representation().IsDouble()); |
| ASSERT(instr->value()->representation().IsDouble()); |
| LOperand* input = UseRegisterAtStart(instr->value()); |
| return MarkAsCall(DefineSameAsFirst(new(zone()) LMathLog(input)), 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) { |
| ASSERT(instr->representation().IsDouble()); |
| ASSERT(instr->value()->representation().IsDouble()); |
| LOperand* value = UseTempRegister(instr->value()); |
| LOperand* temp1 = TempRegister(); |
| LOperand* temp2 = TempRegister(); |
| LMathExp* result = new(zone()) LMathExp(value, temp1, temp2); |
| return DefineAsRegister(result); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoMathSqrt(HUnaryMathOperation* instr) { |
| LOperand* input = UseRegisterAtStart(instr->value()); |
| LMathSqrt* result = new(zone()) LMathSqrt(input); |
| return DefineSameAsFirst(result); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoMathPowHalf(HUnaryMathOperation* instr) { |
| LOperand* input = UseRegisterAtStart(instr->value()); |
| LMathPowHalf* result = new(zone()) LMathPowHalf(input); |
| return DefineSameAsFirst(result); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCallNew(HCallNew* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* constructor = UseFixed(instr->constructor(), rdi); |
| LCallNew* result = new(zone()) LCallNew(context, constructor); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCallNewArray(HCallNewArray* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* constructor = UseFixed(instr->constructor(), rdi); |
| LCallNewArray* result = new(zone()) LCallNewArray(context, constructor); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCallFunction(HCallFunction* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* function = UseFixed(instr->function(), rdi); |
| LCallFunction* call = new(zone()) LCallFunction(context, function); |
| return MarkAsCall(DefineFixed(call, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCallRuntime(HCallRuntime* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LCallRuntime* result = new(zone()) LCallRuntime(context); |
| return MarkAsCall(DefineFixed(result, rax), 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()) { |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(instr->right()->representation().Equals(instr->representation())); |
| ASSERT(instr->CheckFlag(HValue::kTruncatingToInt32)); |
| |
| LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| LOperand* right = UseOrConstantAtStart(instr->BetterRightOperand()); |
| return DefineSameAsFirst(new(zone()) LBitI(left, right)); |
| } else { |
| return DoArithmeticT(instr->op(), instr); |
| } |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoDivByPowerOf2I(HDiv* instr) { |
| ASSERT(instr->representation().IsSmiOrInteger32()); |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(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) { |
| ASSERT(instr->representation().IsInteger32()); |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(instr->right()->representation().Equals(instr->representation())); |
| LOperand* dividend = UseRegister(instr->left()); |
| int32_t divisor = instr->right()->GetInteger32Constant(); |
| LOperand* temp1 = FixedTemp(rax); |
| LOperand* temp2 = FixedTemp(rdx); |
| LInstruction* result = DefineFixed(new(zone()) LDivByConstI( |
| dividend, divisor, temp1, temp2), rdx); |
| if (divisor == 0 || |
| (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) || |
| !instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32)) { |
| result = AssignEnvironment(result); |
| } |
| return result; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoDivI(HDiv* instr) { |
| ASSERT(instr->representation().IsSmiOrInteger32()); |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(instr->right()->representation().Equals(instr->representation())); |
| LOperand* dividend = UseFixed(instr->left(), rax); |
| LOperand* divisor = UseRegister(instr->right()); |
| LOperand* temp = FixedTemp(rdx); |
| LInstruction* result = DefineFixed(new(zone()) LDivI( |
| dividend, divisor, temp), rax); |
| if (instr->CheckFlag(HValue::kCanBeDivByZero) || |
| instr->CheckFlag(HValue::kBailoutOnMinusZero) || |
| instr->CheckFlag(HValue::kCanOverflow) || |
| !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 = DefineSameAsFirst(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) { |
| ASSERT(instr->representation().IsInteger32()); |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(instr->right()->representation().Equals(instr->representation())); |
| LOperand* dividend = UseRegister(instr->left()); |
| int32_t divisor = instr->right()->GetInteger32Constant(); |
| LOperand* temp1 = FixedTemp(rax); |
| LOperand* temp2 = FixedTemp(rdx); |
| LOperand* temp3 = |
| ((divisor > 0 && !instr->CheckFlag(HValue::kLeftCanBeNegative)) || |
| (divisor < 0 && !instr->CheckFlag(HValue::kLeftCanBePositive))) ? |
| NULL : TempRegister(); |
| LInstruction* result = |
| DefineFixed(new(zone()) LFlooringDivByConstI(dividend, |
| divisor, |
| temp1, |
| temp2, |
| temp3), |
| rdx); |
| if (divisor == 0 || |
| (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0)) { |
| result = AssignEnvironment(result); |
| } |
| return result; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoFlooringDivI(HMathFloorOfDiv* instr) { |
| ASSERT(instr->representation().IsSmiOrInteger32()); |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(instr->right()->representation().Equals(instr->representation())); |
| LOperand* dividend = UseFixed(instr->left(), rax); |
| LOperand* divisor = UseRegister(instr->right()); |
| LOperand* temp = FixedTemp(rdx); |
| LInstruction* result = DefineFixed(new(zone()) LFlooringDivI( |
| dividend, divisor, temp), rax); |
| 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) { |
| ASSERT(instr->representation().IsSmiOrInteger32()); |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(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::kBailoutOnMinusZero)) { |
| result = AssignEnvironment(result); |
| } |
| return result; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoModByConstI(HMod* instr) { |
| ASSERT(instr->representation().IsSmiOrInteger32()); |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(instr->right()->representation().Equals(instr->representation())); |
| LOperand* dividend = UseRegister(instr->left()); |
| int32_t divisor = instr->right()->GetInteger32Constant(); |
| LOperand* temp1 = FixedTemp(rax); |
| LOperand* temp2 = FixedTemp(rdx); |
| LInstruction* result = DefineFixed(new(zone()) LModByConstI( |
| dividend, divisor, temp1, temp2), rax); |
| if (divisor == 0 || instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| result = AssignEnvironment(result); |
| } |
| return result; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoModI(HMod* instr) { |
| ASSERT(instr->representation().IsSmiOrInteger32()); |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(instr->right()->representation().Equals(instr->representation())); |
| LOperand* dividend = UseFixed(instr->left(), rax); |
| LOperand* divisor = UseRegister(instr->right()); |
| LOperand* temp = FixedTemp(rdx); |
| LInstruction* result = DefineFixed(new(zone()) LModI( |
| dividend, divisor, temp), rdx); |
| if (instr->CheckFlag(HValue::kCanBeDivByZero) || |
| instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| result = AssignEnvironment(result); |
| } |
| return result; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoMod(HMod* instr) { |
| if (instr->representation().IsSmiOrInteger32()) { |
| if (instr->RightIsPowerOf2()) { |
| return DoModByPowerOf2I(instr); |
| } else if (instr->right()->IsConstant()) { |
| return DoModByConstI(instr); |
| } else { |
| return 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()) { |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(instr->right()->representation().Equals(instr->representation())); |
| LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| LOperand* right = UseOrConstant(instr->BetterRightOperand()); |
| LMulI* mul = new(zone()) LMulI(left, right); |
| if (instr->CheckFlag(HValue::kCanOverflow) || |
| instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| AssignEnvironment(mul); |
| } |
| return DefineSameAsFirst(mul); |
| } else if (instr->representation().IsDouble()) { |
| return DoArithmeticD(Token::MUL, instr); |
| } else { |
| return DoArithmeticT(Token::MUL, instr); |
| } |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoSub(HSub* instr) { |
| if (instr->representation().IsSmiOrInteger32()) { |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(instr->right()->representation().Equals(instr->representation())); |
| LOperand* left = UseRegisterAtStart(instr->left()); |
| LOperand* right = UseOrConstantAtStart(instr->right()); |
| LSubI* sub = new(zone()) LSubI(left, right); |
| LInstruction* result = DefineSameAsFirst(sub); |
| 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::DoAdd(HAdd* instr) { |
| if (instr->representation().IsSmiOrInteger32()) { |
| // Check to see if it would be advantageous to use an lea instruction rather |
| // than an add. This is the case when no overflow check is needed and there |
| // are multiple uses of the add's inputs, so using a 3-register add will |
| // preserve all input values for later uses. |
| bool use_lea = LAddI::UseLea(instr); |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(instr->right()->representation().Equals(instr->representation())); |
| LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| HValue* right_candidate = instr->BetterRightOperand(); |
| LOperand* right; |
| if (instr->representation().IsSmi()) { |
| // We cannot add a tagged immediate to a tagged value, |
| // so we request it in a register. |
| right = UseRegisterAtStart(right_candidate); |
| } else { |
| right = use_lea ? UseRegisterOrConstantAtStart(right_candidate) |
| : UseOrConstantAtStart(right_candidate); |
| } |
| LAddI* add = new(zone()) LAddI(left, right); |
| bool can_overflow = instr->CheckFlag(HValue::kCanOverflow); |
| LInstruction* result = use_lea ? DefineAsRegister(add) |
| : DefineSameAsFirst(add); |
| if (can_overflow) { |
| result = AssignEnvironment(result); |
| } |
| return result; |
| } else if (instr->representation().IsExternal()) { |
| ASSERT(instr->left()->representation().IsExternal()); |
| ASSERT(instr->right()->representation().IsInteger32()); |
| ASSERT(!instr->CheckFlag(HValue::kCanOverflow)); |
| bool use_lea = LAddI::UseLea(instr); |
| LOperand* left = UseRegisterAtStart(instr->left()); |
| HValue* right_candidate = instr->right(); |
| LOperand* right = use_lea |
| ? UseRegisterOrConstantAtStart(right_candidate) |
| : UseOrConstantAtStart(right_candidate); |
| LAddI* add = new(zone()) LAddI(left, right); |
| LInstruction* result = use_lea |
| ? DefineAsRegister(add) |
| : DefineSameAsFirst(add); |
| return result; |
| } else if (instr->representation().IsDouble()) { |
| return DoArithmeticD(Token::ADD, instr); |
| } else { |
| return DoArithmeticT(Token::ADD, instr); |
| } |
| return NULL; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoMathMinMax(HMathMinMax* instr) { |
| LOperand* left = NULL; |
| LOperand* right = NULL; |
| ASSERT(instr->left()->representation().Equals(instr->representation())); |
| ASSERT(instr->right()->representation().Equals(instr->representation())); |
| if (instr->representation().IsSmi()) { |
| left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| right = UseAtStart(instr->BetterRightOperand()); |
| } else if (instr->representation().IsInteger32()) { |
| left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| right = UseOrConstantAtStart(instr->BetterRightOperand()); |
| } else { |
| ASSERT(instr->representation().IsDouble()); |
| left = UseRegisterAtStart(instr->left()); |
| right = UseRegisterAtStart(instr->right()); |
| } |
| LMathMinMax* minmax = new(zone()) LMathMinMax(left, right); |
| return DefineSameAsFirst(minmax); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoPower(HPower* instr) { |
| ASSERT(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(); |
| ASSERT(instr->left()->representation().IsDouble()); |
| LOperand* left = UseFixedDouble(instr->left(), xmm2); |
| LOperand* right = exponent_type.IsDouble() ? |
| UseFixedDouble(instr->right(), xmm1) : UseFixed(instr->right(), rdx); |
| LPower* result = new(zone()) LPower(left, right); |
| return MarkAsCall(DefineFixedDouble(result, xmm3), instr, |
| CAN_DEOPTIMIZE_EAGERLY); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) { |
| ASSERT(instr->left()->representation().IsTagged()); |
| ASSERT(instr->right()->representation().IsTagged()); |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* left = UseFixed(instr->left(), rdx); |
| LOperand* right = UseFixed(instr->right(), rax); |
| LCmpT* result = new(zone()) LCmpT(context, left, right); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCompareNumericAndBranch( |
| HCompareNumericAndBranch* instr) { |
| Representation r = instr->representation(); |
| if (r.IsSmiOrInteger32()) { |
| ASSERT(instr->left()->representation().Equals(r)); |
| ASSERT(instr->right()->representation().Equals(r)); |
| LOperand* left = UseRegisterOrConstantAtStart(instr->left()); |
| LOperand* right = UseOrConstantAtStart(instr->right()); |
| return new(zone()) LCompareNumericAndBranch(left, right); |
| } else { |
| ASSERT(r.IsDouble()); |
| ASSERT(instr->left()->representation().IsDouble()); |
| ASSERT(instr->right()->representation().IsDouble()); |
| LOperand* left; |
| LOperand* right; |
| if (instr->left()->IsConstant() && instr->right()->IsConstant()) { |
| left = UseRegisterOrConstantAtStart(instr->left()); |
| right = UseRegisterOrConstantAtStart(instr->right()); |
| } else { |
| left = UseRegisterAtStart(instr->left()); |
| right = UseRegisterAtStart(instr->right()); |
| } |
| return new(zone()) LCompareNumericAndBranch(left, right); |
| } |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch( |
| HCompareObjectEqAndBranch* instr) { |
| LInstruction* goto_instr = CheckElideControlInstruction(instr); |
| if (goto_instr != NULL) return goto_instr; |
| LOperand* left = UseRegisterAtStart(instr->left()); |
| LOperand* right = UseRegisterOrConstantAtStart(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) { |
| LInstruction* goto_instr = CheckElideControlInstruction(instr); |
| if (goto_instr != NULL) return goto_instr; |
| LOperand* value = UseRegister(instr->value()); |
| return new(zone()) LCompareMinusZeroAndBranch(value); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoIsObjectAndBranch(HIsObjectAndBranch* instr) { |
| ASSERT(instr->value()->representation().IsTagged()); |
| return new(zone()) LIsObjectAndBranch(UseRegisterAtStart(instr->value())); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoIsStringAndBranch(HIsStringAndBranch* instr) { |
| ASSERT(instr->value()->representation().IsTagged()); |
| LOperand* value = UseRegisterAtStart(instr->value()); |
| LOperand* temp = TempRegister(); |
| return new(zone()) LIsStringAndBranch(value, temp); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoIsSmiAndBranch(HIsSmiAndBranch* instr) { |
| ASSERT(instr->value()->representation().IsTagged()); |
| return new(zone()) LIsSmiAndBranch(Use(instr->value())); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoIsUndetectableAndBranch( |
| HIsUndetectableAndBranch* instr) { |
| ASSERT(instr->value()->representation().IsTagged()); |
| LOperand* value = UseRegisterAtStart(instr->value()); |
| LOperand* temp = TempRegister(); |
| return new(zone()) LIsUndetectableAndBranch(value, temp); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoStringCompareAndBranch( |
| HStringCompareAndBranch* instr) { |
| |
| ASSERT(instr->left()->representation().IsTagged()); |
| ASSERT(instr->right()->representation().IsTagged()); |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* left = UseFixed(instr->left(), rdx); |
| LOperand* right = UseFixed(instr->right(), rax); |
| LStringCompareAndBranch* result = |
| new(zone()) LStringCompareAndBranch(context, left, right); |
| |
| return MarkAsCall(result, instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoHasInstanceTypeAndBranch( |
| HHasInstanceTypeAndBranch* instr) { |
| ASSERT(instr->value()->representation().IsTagged()); |
| LOperand* value = UseRegisterAtStart(instr->value()); |
| return new(zone()) LHasInstanceTypeAndBranch(value); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoGetCachedArrayIndex( |
| HGetCachedArrayIndex* instr) { |
| ASSERT(instr->value()->representation().IsTagged()); |
| LOperand* value = UseRegisterAtStart(instr->value()); |
| |
| return DefineAsRegister(new(zone()) LGetCachedArrayIndex(value)); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoHasCachedArrayIndexAndBranch( |
| HHasCachedArrayIndexAndBranch* instr) { |
| ASSERT(instr->value()->representation().IsTagged()); |
| LOperand* value = UseRegisterAtStart(instr->value()); |
| return new(zone()) LHasCachedArrayIndexAndBranch(value); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoClassOfTestAndBranch( |
| HClassOfTestAndBranch* instr) { |
| LOperand* value = UseRegister(instr->value()); |
| return new(zone()) LClassOfTestAndBranch(value, |
| TempRegister(), |
| TempRegister()); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoMapEnumLength(HMapEnumLength* instr) { |
| LOperand* map = UseRegisterAtStart(instr->value()); |
| return DefineAsRegister(new(zone()) LMapEnumLength(map)); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoDateField(HDateField* instr) { |
| LOperand* object = UseFixed(instr->value(), rax); |
| LDateField* result = new(zone()) LDateField(object, instr->index()); |
| return MarkAsCall(DefineFixed(result, rax), instr, CAN_DEOPTIMIZE_EAGERLY); |
| } |
| |
| |
| 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 = FLAG_debug_code |
| ? UseRegisterAtStart(instr->value()) |
| : UseRegisterOrConstantAtStart(instr->value()); |
| LOperand* context = FLAG_debug_code ? UseFixed(instr->context(), rsi) : NULL; |
| LInstruction* result = new(zone()) LSeqStringSetChar(context, string, |
| index, value); |
| if (FLAG_debug_code) { |
| result = MarkAsCall(result, instr); |
| } |
| return result; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoBoundsCheck(HBoundsCheck* instr) { |
| LOperand* value = UseRegisterOrConstantAtStart(instr->index()); |
| LOperand* length = Use(instr->length()); |
| return AssignEnvironment(new(zone()) LBoundsCheck(value, length)); |
| } |
| |
| |
| 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 { |
| ASSERT(to.IsInteger32()); |
| if (val->type().IsSmi() || val->representation().IsSmi()) { |
| LOperand* value = UseRegister(val); |
| return DefineSameAsFirst(new(zone()) LSmiUntag(value, false)); |
| } else { |
| LOperand* value = UseRegister(val); |
| bool truncating = instr->CanTruncateToInt32(); |
| LOperand* xmm_temp = truncating ? NULL : FixedTemp(xmm1); |
| LInstruction* result = |
| DefineSameAsFirst(new(zone()) LTaggedToI(value, xmm_temp)); |
| if (!val->representation().IsSmi()) { |
| // Note: Only deopts in deferred code. |
| result = AssignEnvironment(result); |
| } |
| return result; |
| } |
| } |
| } else if (from.IsDouble()) { |
| if (to.IsTagged()) { |
| info()->MarkAsDeferredCalling(); |
| LOperand* value = UseRegister(val); |
| LOperand* temp = TempRegister(); |
| LUnallocated* result_temp = TempRegister(); |
| LNumberTagD* result = new(zone()) LNumberTagD(value, temp); |
| return AssignPointerMap(Define(result, result_temp)); |
| } else if (to.IsSmi()) { |
| LOperand* value = UseRegister(val); |
| return AssignEnvironment( |
| DefineAsRegister(new(zone()) LDoubleToSmi(value))); |
| } else { |
| ASSERT(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 (!instr->CheckFlag(HValue::kCanOverflow)) { |
| LOperand* value = UseRegister(val); |
| return DefineAsRegister(new(zone()) LSmiTag(value)); |
| } else if (val->CheckFlag(HInstruction::kUint32)) { |
| LOperand* value = UseRegister(val); |
| LOperand* temp1 = TempRegister(); |
| LOperand* temp2 = FixedTemp(xmm1); |
| LNumberTagU* result = new(zone()) LNumberTagU(value, temp1, temp2); |
| return AssignPointerMap(DefineSameAsFirst(result)); |
| } else { |
| LOperand* value = UseRegister(val); |
| LNumberTagI* result = new(zone()) LNumberTagI(value); |
| return AssignPointerMap(DefineSameAsFirst(result)); |
| } |
| } 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 { |
| ASSERT(to.IsDouble()); |
| if (val->CheckFlag(HInstruction::kUint32)) { |
| LOperand* temp = FixedTemp(xmm1); |
| return DefineAsRegister( |
| new(zone()) LUint32ToDouble(UseRegister(val), temp)); |
| } else { |
| LOperand* value = Use(val); |
| return DefineAsRegister(new(zone()) LInteger32ToDouble(value)); |
| } |
| } |
| } |
| UNREACHABLE(); |
| return NULL; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCheckHeapObject(HCheckHeapObject* instr) { |
| LOperand* value = UseRegisterAtStart(instr->value()); |
| return AssignEnvironment(new(zone()) LCheckNonSmi(value)); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCheckSmi(HCheckSmi* instr) { |
| LOperand* value = UseRegisterAtStart(instr->value()); |
| return AssignEnvironment(new(zone()) LCheckSmi(value)); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCheckInstanceType(HCheckInstanceType* instr) { |
| LOperand* value = UseRegisterAtStart(instr->value()); |
| LCheckInstanceType* 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) { |
| LOperand* value = NULL; |
| if (!instr->CanOmitMapChecks()) { |
| value = UseRegisterAtStart(instr->value()); |
| if (instr->has_migration_target()) info()->MarkAsDeferredCalling(); |
| } |
| LCheckMaps* result = new(zone()) LCheckMaps(value); |
| if (!instr->CanOmitMapChecks()) { |
| // Note: Only deopts in deferred code. |
| AssignEnvironment(result); |
| if (instr->has_migration_target()) return 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()) { |
| return DefineAsRegister(new(zone()) LClampDToUint8(reg)); |
| } else if (input_rep.IsInteger32()) { |
| return DefineSameAsFirst(new(zone()) LClampIToUint8(reg)); |
| } else { |
| ASSERT(input_rep.IsSmiOrTagged()); |
| // Register allocator doesn't (yet) support allocation of double |
| // temps. Reserve xmm1 explicitly. |
| LClampTToUint8* result = new(zone()) LClampTToUint8(reg, |
| FixedTemp(xmm1)); |
| return AssignEnvironment(DefineSameAsFirst(result)); |
| } |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoDoubleBits(HDoubleBits* instr) { |
| HValue* value = instr->value(); |
| ASSERT(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(), rsi) : NULL; |
| LOperand* parameter_count = UseRegisterOrConstant(instr->parameter_count()); |
| return new(zone()) LReturn( |
| UseFixed(instr->value(), rax), 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()) { |
| LOperand* temp = TempRegister(); |
| return DefineAsRegister(new(zone()) LConstantD(temp)); |
| } else if (r.IsExternal()) { |
| return DefineAsRegister(new(zone()) LConstantE); |
| } else if (r.IsTagged()) { |
| return DefineAsRegister(new(zone()) LConstantT); |
| } else { |
| UNREACHABLE(); |
| return NULL; |
| } |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoLoadGlobalCell(HLoadGlobalCell* instr) { |
| LLoadGlobalCell* result = new(zone()) LLoadGlobalCell; |
| return instr->RequiresHoleCheck() |
| ? AssignEnvironment(DefineAsRegister(result)) |
| : DefineAsRegister(result); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoLoadGlobalGeneric(HLoadGlobalGeneric* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* global_object = UseFixed(instr->global_object(), rax); |
| LLoadGlobalGeneric* result = |
| new(zone()) LLoadGlobalGeneric(context, global_object); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoStoreGlobalCell(HStoreGlobalCell* instr) { |
| LOperand* value = UseRegister(instr->value()); |
| // Use a temp to avoid reloading the cell value address in the case where |
| // we perform a hole check. |
| return instr->RequiresHoleCheck() |
| ? AssignEnvironment(new(zone()) LStoreGlobalCell(value, TempRegister())) |
| : new(zone()) LStoreGlobalCell(value, NULL); |
| } |
| |
| |
| 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; |
| LOperand* temp; |
| context = UseRegister(instr->context()); |
| if (instr->NeedsWriteBarrier()) { |
| value = UseTempRegister(instr->value()); |
| temp = TempRegister(); |
| } else { |
| value = UseRegister(instr->value()); |
| temp = NULL; |
| } |
| LInstruction* result = new(zone()) LStoreContextSlot(context, value, temp); |
| if (instr->RequiresHoleCheck() && instr->DeoptimizesOnHole()) { |
| result = AssignEnvironment(result); |
| } |
| return result; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoLoadNamedField(HLoadNamedField* instr) { |
| // Use the special mov rax, moffs64 encoding for external |
| // memory accesses with 64-bit word-sized values. |
| if (instr->access().IsExternalMemory() && |
| instr->access().offset() == 0 && |
| (instr->access().representation().IsSmi() || |
| instr->access().representation().IsTagged() || |
| instr->access().representation().IsHeapObject() || |
| instr->access().representation().IsExternal())) { |
| LOperand* obj = UseRegisterOrConstantAtStart(instr->object()); |
| return DefineFixed(new(zone()) LLoadNamedField(obj), rax); |
| } |
| LOperand* obj = UseRegisterAtStart(instr->object()); |
| return DefineAsRegister(new(zone()) LLoadNamedField(obj)); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoLoadNamedGeneric(HLoadNamedGeneric* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* object = UseFixed(instr->object(), rax); |
| LLoadNamedGeneric* result = new(zone()) LLoadNamedGeneric(context, object); |
| return MarkAsCall(DefineFixed(result, rax), 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); |
| } |
| |
| |
| void LChunkBuilder::FindDehoistedKeyDefinitions(HValue* candidate) { |
| BitVector* dehoisted_key_ids = chunk_->GetDehoistedKeyIds(); |
| if (dehoisted_key_ids->Contains(candidate->id())) return; |
| dehoisted_key_ids->Add(candidate->id()); |
| if (!candidate->IsPhi()) return; |
| for (int i = 0; i < candidate->OperandCount(); ++i) { |
| FindDehoistedKeyDefinitions(candidate->OperandAt(i)); |
| } |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoLoadKeyed(HLoadKeyed* instr) { |
| ASSERT(instr->key()->representation().IsInteger32()); |
| ElementsKind elements_kind = instr->elements_kind(); |
| LOperand* key = UseRegisterOrConstantAtStart(instr->key()); |
| LInstruction* result = NULL; |
| |
| if (instr->IsDehoisted()) { |
| FindDehoistedKeyDefinitions(instr->key()); |
| } |
| |
| if (!instr->is_typed_elements()) { |
| LOperand* obj = UseRegisterAtStart(instr->elements()); |
| result = DefineAsRegister(new(zone()) LLoadKeyed(obj, key)); |
| } else { |
| ASSERT( |
| (instr->representation().IsInteger32() && |
| !(IsDoubleOrFloatElementsKind(elements_kind))) || |
| (instr->representation().IsDouble() && |
| (IsDoubleOrFloatElementsKind(elements_kind)))); |
| LOperand* backing_store = UseRegister(instr->elements()); |
| result = DefineAsRegister(new(zone()) LLoadKeyed(backing_store, key)); |
| } |
| |
| if ((instr->is_external() || instr->is_fixed_typed_array()) ? |
| // see LCodeGen::DoLoadKeyedExternalArray |
| ((elements_kind == EXTERNAL_UINT32_ELEMENTS || |
| elements_kind == UINT32_ELEMENTS) && |
| !instr->CheckFlag(HInstruction::kUint32)) : |
| // see LCodeGen::DoLoadKeyedFixedDoubleArray and |
| // LCodeGen::DoLoadKeyedFixedArray |
| instr->RequiresHoleCheck()) { |
| result = AssignEnvironment(result); |
| } |
| return result; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoLoadKeyedGeneric(HLoadKeyedGeneric* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* object = UseFixed(instr->object(), rdx); |
| LOperand* key = UseFixed(instr->key(), rax); |
| |
| LLoadKeyedGeneric* result = |
| new(zone()) LLoadKeyedGeneric(context, object, key); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) { |
| ElementsKind elements_kind = instr->elements_kind(); |
| |
| if (instr->IsDehoisted()) { |
| FindDehoistedKeyDefinitions(instr->key()); |
| } |
| |
| if (!instr->is_typed_elements()) { |
| ASSERT(instr->elements()->representation().IsTagged()); |
| bool needs_write_barrier = instr->NeedsWriteBarrier(); |
| LOperand* object = NULL; |
| LOperand* key = NULL; |
| LOperand* val = NULL; |
| |
| Representation value_representation = instr->value()->representation(); |
| if (value_representation.IsDouble()) { |
| object = UseRegisterAtStart(instr->elements()); |
| val = UseRegisterAtStart(instr->value()); |
| key = UseRegisterOrConstantAtStart(instr->key()); |
| } else { |
| ASSERT(value_representation.IsSmiOrTagged() || |
| 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 = UseRegisterOrConstantAtStart(instr->value()); |
| key = UseRegisterOrConstantAtStart(instr->key()); |
| } |
| } |
| |
| return new(zone()) LStoreKeyed(object, key, val); |
| } |
| |
| ASSERT( |
| (instr->value()->representation().IsInteger32() && |
| !IsDoubleOrFloatElementsKind(elements_kind)) || |
| (instr->value()->representation().IsDouble() && |
| IsDoubleOrFloatElementsKind(elements_kind))); |
| ASSERT((instr->is_fixed_typed_array() && |
| instr->elements()->representation().IsTagged()) || |
| (instr->is_external() && |
| instr->elements()->representation().IsExternal())); |
| bool val_is_temp_register = |
| elements_kind == EXTERNAL_UINT8_CLAMPED_ELEMENTS || |
| elements_kind == EXTERNAL_FLOAT32_ELEMENTS || |
| elements_kind == FLOAT32_ELEMENTS; |
| LOperand* val = val_is_temp_register ? UseTempRegister(instr->value()) |
| : UseRegister(instr->value()); |
| LOperand* key = UseRegisterOrConstantAtStart(instr->key()); |
| LOperand* backing_store = UseRegister(instr->elements()); |
| return new(zone()) LStoreKeyed(backing_store, key, val); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* object = UseFixed(instr->object(), rdx); |
| LOperand* key = UseFixed(instr->key(), rcx); |
| LOperand* value = UseFixed(instr->value(), rax); |
| |
| ASSERT(instr->object()->representation().IsTagged()); |
| ASSERT(instr->key()->representation().IsTagged()); |
| ASSERT(instr->value()->representation().IsTagged()); |
| |
| LStoreKeyedGeneric* result = |
| new(zone()) LStoreKeyedGeneric(context, object, key, value); |
| 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(); |
| LOperand* temp_reg = TempRegister(); |
| LTransitionElementsKind* result = new(zone()) LTransitionElementsKind( |
| object, NULL, new_map_reg, temp_reg); |
| return result; |
| } else { |
| LOperand* object = UseFixed(instr->object(), rax); |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LTransitionElementsKind* result = |
| new(zone()) LTransitionElementsKind(object, context, NULL, 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::DoStoreNamedField(HStoreNamedField* instr) { |
| bool is_in_object = instr->access().IsInobject(); |
| bool is_external_location = instr->access().IsExternalMemory() && |
| instr->access().offset() == 0; |
| 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 if (is_external_location) { |
| ASSERT(!is_in_object); |
| ASSERT(!needs_write_barrier); |
| ASSERT(!needs_write_barrier_for_map); |
| obj = UseRegisterOrConstant(instr->object()); |
| } else { |
| obj = needs_write_barrier_for_map |
| ? UseRegister(instr->object()) |
| : UseRegisterAtStart(instr->object()); |
| } |
| |
| bool can_be_constant = instr->value()->IsConstant() && |
| HConstant::cast(instr->value())->NotInNewSpace() && |
| !instr->field_representation().IsDouble(); |
| |
| LOperand* val; |
| if (needs_write_barrier) { |
| val = UseTempRegister(instr->value()); |
| } else if (is_external_location) { |
| val = UseFixed(instr->value(), rax); |
| } else if (can_be_constant) { |
| val = UseRegisterOrConstant(instr->value()); |
| } else if (instr->field_representation().IsSmi()) { |
| val = UseRegister(instr->value()); |
| } else if (instr->field_representation().IsDouble()) { |
| val = UseRegisterAtStart(instr->value()); |
| } else { |
| val = UseRegister(instr->value()); |
| } |
| |
| // We only need a scratch register if we have a write barrier or we |
| // have a store into the properties array (not in-object-property). |
| LOperand* temp = (!is_in_object || needs_write_barrier || |
| needs_write_barrier_for_map) ? TempRegister() : NULL; |
| |
| LInstruction* result = new(zone()) LStoreNamedField(obj, val, temp); |
| if (!instr->access().IsExternalMemory() && |
| instr->field_representation().IsHeapObject() && |
| (val->IsConstantOperand() |
| ? HConstant::cast(instr->value())->HasSmiValue() |
| : !instr->value()->type().IsHeapObject())) { |
| result = AssignEnvironment(result); |
| } |
| return result; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* object = UseFixed(instr->object(), rdx); |
| LOperand* value = UseFixed(instr->value(), rax); |
| |
| LStoreNamedGeneric* result = |
| new(zone()) LStoreNamedGeneric(context, object, value); |
| return MarkAsCall(result, instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoStringAdd(HStringAdd* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* left = UseFixed(instr->left(), rdx); |
| LOperand* right = UseFixed(instr->right(), rax); |
| return MarkAsCall( |
| DefineFixed(new(zone()) LStringAdd(context, left, right), rax), 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 = instr->size()->IsConstant() |
| ? UseConstant(instr->size()) |
| : UseTempRegister(instr->size()); |
| LOperand* temp = TempRegister(); |
| LAllocate* result = new(zone()) LAllocate(context, size, temp); |
| return AssignPointerMap(DefineAsRegister(result)); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoRegExpLiteral(HRegExpLiteral* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LRegExpLiteral* result = new(zone()) LRegExpLiteral(context); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoFunctionLiteral(HFunctionLiteral* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LFunctionLiteral* result = new(zone()) LFunctionLiteral(context); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoOsrEntry(HOsrEntry* instr) { |
| ASSERT(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 { |
| ASSERT(info()->IsStub()); |
| CodeStubInterfaceDescriptor* descriptor = |
| info()->code_stub()->GetInterfaceDescriptor(info()->isolate()); |
| int index = static_cast<int>(instr->index()); |
| Register reg = descriptor->GetParameterRegister(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) { |
| Abort(kTooManySpillSlotsNeededForOSR); |
| spill_index = 0; |
| } |
| } |
| return DefineAsSpilled(new(zone()) LUnknownOSRValue, spill_index); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoCallStub(HCallStub* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LCallStub* result = new(zone()) LCallStub(context); |
| return MarkAsCall(DefineFixed(result, rax), 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; |
| LOperand* index; |
| if (instr->length()->IsConstant() && instr->index()->IsConstant()) { |
| length = UseRegisterOrConstant(instr->length()); |
| index = UseOrConstant(instr->index()); |
| } else { |
| length = UseTempRegister(instr->length()); |
| index = Use(instr->index()); |
| } |
| return DefineAsRegister(new(zone()) LAccessArgumentsAt(args, length, index)); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoToFastProperties(HToFastProperties* instr) { |
| LOperand* object = UseFixed(instr->value(), rax); |
| LToFastProperties* result = new(zone()) LToFastProperties(object); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoTypeof(HTypeof* instr) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| LOperand* value = UseAtStart(instr->value()); |
| LTypeof* result = new(zone()) LTypeof(context, value); |
| return MarkAsCall(DefineFixed(result, rax), instr); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoTypeofIsAndBranch(HTypeofIsAndBranch* instr) { |
| LInstruction* goto_instr = CheckElideControlInstruction(instr); |
| if (goto_instr != NULL) return goto_instr; |
| |
| return new(zone()) LTypeofIsAndBranch(UseTempRegister(instr->value())); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoIsConstructCallAndBranch( |
| HIsConstructCallAndBranch* instr) { |
| return new(zone()) LIsConstructCallAndBranch(TempRegister()); |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) { |
| instr->ReplayEnvironment(current_block_->last_environment()); |
| return NULL; |
| } |
| |
| |
| LInstruction* LChunkBuilder::DoStackCheck(HStackCheck* instr) { |
| info()->MarkAsDeferredCalling(); |
| if (instr->is_function_entry()) { |
| LOperand* context = UseFixed(instr->context(), rsi); |
| return MarkAsCall(new(zone()) LStackCheck(context), instr); |
| } else { |
| ASSERT(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(); |
| 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->set_entry(instr); |
| current_block_->UpdateEnvironment(inner); |
| chunk_->AddInlinedClosure(instr->closure()); |
| 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); |
| ASSERT(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(), rsi); |
| LOperand* object = UseFixed(instr->enumerable(), rax); |
| LForInPrepareMap* result = new(zone()) LForInPrepareMap(context, object); |
| return MarkAsCall(DefineFixed(result, rax), 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); |
| } |
| |
| |
| } } // namespace v8::internal |
| |
| #endif // V8_TARGET_ARCH_X64 |