b6f82c734c
It has been turned on by default for a long time, and hydrogenized BinaryOpStubs actually depend on it being turned on. BUG=v8:3487 LOG=n R=ishell@chromium.org Review URL: https://codereview.chromium.org/630023002 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24415 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2715 lines
89 KiB
C++
2715 lines
89 KiB
C++
// 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 <sstream>
|
|
|
|
#include "src/v8.h"
|
|
|
|
#if V8_TARGET_ARCH_IA32
|
|
|
|
#include "src/hydrogen-osr.h"
|
|
#include "src/ia32/lithium-codegen-ia32.h"
|
|
#include "src/lithium-inl.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
|
|
|
|
|
|
bool LInstruction::HasDoubleRegisterResult() {
|
|
return HasResult() && result()->IsDoubleRegister();
|
|
}
|
|
|
|
|
|
bool LInstruction::HasDoubleRegisterInput() {
|
|
for (int i = 0; i < InputCount(); i++) {
|
|
LOperand* op = InputAt(i);
|
|
if (op != NULL && op->IsDoubleRegister()) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
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());
|
|
}
|
|
|
|
|
|
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("= ");
|
|
context()->PrintTo(stream);
|
|
stream->Add(" ");
|
|
function()->PrintTo(stream);
|
|
stream->Add(" #%d / ", arity());
|
|
}
|
|
|
|
|
|
void LCallNew::PrintDataTo(StringStream* stream) {
|
|
stream->Add("= ");
|
|
context()->PrintTo(stream);
|
|
stream->Add(" ");
|
|
constructor()->PrintTo(stream);
|
|
stream->Add(" #%d / ", arity());
|
|
}
|
|
|
|
|
|
void LCallNewArray::PrintDataTo(StringStream* stream) {
|
|
stream->Add("= ");
|
|
context()->PrintTo(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) {
|
|
// Skip a slot if for a double-width slot.
|
|
if (kind == DOUBLE_REGISTERS) {
|
|
spill_slot_count_++;
|
|
spill_slot_count_ |= 1;
|
|
num_double_slots_++;
|
|
}
|
|
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());
|
|
}
|
|
}
|
|
|
|
|
|
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());
|
|
}
|
|
|
|
|
|
LPlatformChunk* LChunkBuilder::Build() {
|
|
DCHECK(is_unused());
|
|
chunk_ = new(zone()) LPlatformChunk(info(), graph());
|
|
LPhase phase("L_Building chunk", chunk_);
|
|
status_ = BUILDING;
|
|
|
|
// Reserve the first spill slot for the state of dynamic alignment.
|
|
if (info()->IsOptimizing()) {
|
|
int alignment_state_index = chunk_->GetNextSpillIndex(GENERAL_REGISTERS);
|
|
DCHECK_EQ(alignment_state_index, 0);
|
|
USE(alignment_state_index);
|
|
}
|
|
|
|
// 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,
|
|
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::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));
|
|
}
|
|
|
|
|
|
static inline bool CanBeImmediateConstant(HValue* value) {
|
|
return value->IsConstant() && HConstant::cast(value)->NotInNewSpace();
|
|
}
|
|
|
|
|
|
LOperand* LChunkBuilder::UseOrConstant(HValue* value) {
|
|
return CanBeImmediateConstant(value)
|
|
? chunk_->DefineConstantOperand(HConstant::cast(value))
|
|
: Use(value);
|
|
}
|
|
|
|
|
|
LOperand* LChunkBuilder::UseOrConstantAtStart(HValue* value) {
|
|
return CanBeImmediateConstant(value)
|
|
? chunk_->DefineConstantOperand(HConstant::cast(value))
|
|
: UseAtStart(value);
|
|
}
|
|
|
|
|
|
LOperand* LChunkBuilder::UseFixedOrConstant(HValue* value,
|
|
Register fixed_register) {
|
|
return CanBeImmediateConstant(value)
|
|
? chunk_->DefineConstantOperand(HConstant::cast(value))
|
|
: UseFixed(value, fixed_register);
|
|
}
|
|
|
|
|
|
LOperand* LChunkBuilder::UseRegisterOrConstant(HValue* value) {
|
|
return CanBeImmediateConstant(value)
|
|
? chunk_->DefineConstantOperand(HConstant::cast(value))
|
|
: UseRegister(value);
|
|
}
|
|
|
|
|
|
LOperand* LChunkBuilder::UseRegisterOrConstantAtStart(HValue* value) {
|
|
return CanBeImmediateConstant(value)
|
|
? 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);
|
|
// 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;
|
|
}
|
|
|
|
|
|
LOperand* LChunkBuilder::FixedTemp(Register reg) {
|
|
LUnallocated* operand = ToUnallocated(reg);
|
|
DCHECK(operand->HasFixedPolicy());
|
|
return operand;
|
|
}
|
|
|
|
|
|
LOperand* LChunkBuilder::FixedTemp(XMMRegister 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 = UseFixed(right_value, ecx);
|
|
}
|
|
|
|
// 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 =
|
|
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) {
|
|
DCHECK(instr->representation().IsDouble());
|
|
DCHECK(instr->left()->representation().IsDouble());
|
|
DCHECK(instr->right()->representation().IsDouble());
|
|
if (op == Token::MOD) {
|
|
LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand());
|
|
LOperand* right = UseRegisterAtStart(instr->BetterRightOperand());
|
|
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();
|
|
DCHECK(left->representation().IsTagged());
|
|
DCHECK(right->representation().IsTagged());
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LOperand* left_operand = UseFixed(left, edx);
|
|
LOperand* right_operand = UseFixed(right, eax);
|
|
LArithmeticT* result =
|
|
new(zone()) LArithmeticT(op, context, left_operand, right_operand);
|
|
return MarkAsCall(DefineFixed(result, eax), 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()) {
|
|
HValue* hydrogen_value_for_lazy_bailout = hydrogen_val;
|
|
LInstruction* instruction_needing_environment = NULL;
|
|
if (hydrogen_val->HasObservableSideEffects()) {
|
|
HSimulate* sim = HSimulate::cast(hydrogen_val->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());
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
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();
|
|
LOperand* temp = !easy_case && expected.NeedsMap() ? TempRegister() : NULL;
|
|
LInstruction* branch = new(zone()) LBranch(UseRegister(value), temp);
|
|
if (!easy_case &&
|
|
((!expected.Contains(ToBooleanStub::SMI) && expected.NeedsMap()) ||
|
|
!expected.IsGeneric())) {
|
|
branch = AssignEnvironment(branch);
|
|
}
|
|
return branch;
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoDebugBreak(HDebugBreak* instr) {
|
|
return new(zone()) LDebugBreak();
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoCompareMap(HCompareMap* instr) {
|
|
DCHECK(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(), InstanceofStub::left());
|
|
LOperand* right = UseFixed(instr->right(), InstanceofStub::right());
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LInstanceOf* result = new(zone()) LInstanceOf(context, left, right);
|
|
return MarkAsCall(DefineFixed(result, eax), instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoInstanceOfKnownGlobal(
|
|
HInstanceOfKnownGlobal* instr) {
|
|
LInstanceOfKnownGlobal* result =
|
|
new(zone()) LInstanceOfKnownGlobal(
|
|
UseFixed(instr->context(), esi),
|
|
UseFixed(instr->left(), InstanceofStub::left()),
|
|
FixedTemp(edi));
|
|
return MarkAsCall(DefineFixed(result, eax), instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) {
|
|
LOperand* receiver = UseRegister(instr->receiver());
|
|
LOperand* function = UseRegister(instr->function());
|
|
LOperand* temp = TempRegister();
|
|
LWrapReceiver* result =
|
|
new(zone()) LWrapReceiver(receiver, function, temp);
|
|
return AssignEnvironment(DefineSameAsFirst(result));
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoApplyArguments(HApplyArguments* instr) {
|
|
LOperand* function = UseFixed(instr->function(), edi);
|
|
LOperand* receiver = UseFixed(instr->receiver(), eax);
|
|
LOperand* length = UseFixed(instr->length(), ebx);
|
|
LOperand* elements = UseFixed(instr->elements(), ecx);
|
|
LApplyArguments* result = new(zone()) LApplyArguments(function,
|
|
receiver,
|
|
length,
|
|
elements);
|
|
return MarkAsCall(DefineFixed(result, eax), instr, CAN_DEOPTIMIZE_EAGERLY);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoPushArguments(HPushArguments* instr) {
|
|
int argc = instr->OperandCount();
|
|
for (int i = 0; i < argc; ++i) {
|
|
LOperand* argument = UseAny(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, esi);
|
|
}
|
|
|
|
return DefineAsRegister(new(zone()) LContext);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoDeclareGlobals(HDeclareGlobals* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
return MarkAsCall(new(zone()) LDeclareGlobals(context), instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoCallJSFunction(
|
|
HCallJSFunction* instr) {
|
|
LOperand* function = UseFixed(instr->function(), edi);
|
|
|
|
LCallJSFunction* result = new(zone()) LCallJSFunction(function);
|
|
|
|
return MarkAsCall(DefineFixed(result, eax), instr, CANNOT_DEOPTIMIZE_EAGERLY);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoCallWithDescriptor(
|
|
HCallWithDescriptor* instr) {
|
|
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, eax), instr, CANNOT_DEOPTIMIZE_EAGERLY);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoTailCallThroughMegamorphicCache(
|
|
HTailCallThroughMegamorphicCache* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LOperand* receiver_register =
|
|
UseFixed(instr->receiver(), LoadDescriptor::ReceiverRegister());
|
|
LOperand* name_register =
|
|
UseFixed(instr->name(), LoadDescriptor::NameRegister());
|
|
// Not marked as call. It can't deoptimize, and it never returns.
|
|
return new (zone()) LTailCallThroughMegamorphicCache(
|
|
context, receiver_register, name_register);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoInvokeFunction(HInvokeFunction* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LOperand* function = UseFixed(instr->function(), edi);
|
|
LInvokeFunction* result = new(zone()) LInvokeFunction(context, function);
|
|
return MarkAsCall(DefineFixed(result, eax), 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::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::DoMathFround(HUnaryMathOperation* instr) {
|
|
LOperand* input = UseRegister(instr->value());
|
|
LMathFround* result = new (zone()) LMathFround(input);
|
|
return DefineAsRegister(result);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoMathAbs(HUnaryMathOperation* instr) {
|
|
LOperand* context = UseAny(instr->context()); // Deferred use.
|
|
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) {
|
|
DCHECK(instr->representation().IsDouble());
|
|
DCHECK(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) {
|
|
DCHECK(instr->representation().IsDouble());
|
|
DCHECK(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 = UseAtStart(instr->value());
|
|
return DefineAsRegister(new(zone()) LMathSqrt(input));
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoMathPowHalf(HUnaryMathOperation* instr) {
|
|
LOperand* input = UseRegisterAtStart(instr->value());
|
|
LOperand* temp = TempRegister();
|
|
LMathPowHalf* result = new(zone()) LMathPowHalf(input, temp);
|
|
return DefineSameAsFirst(result);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoCallNew(HCallNew* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LOperand* constructor = UseFixed(instr->constructor(), edi);
|
|
LCallNew* result = new(zone()) LCallNew(context, constructor);
|
|
return MarkAsCall(DefineFixed(result, eax), instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoCallNewArray(HCallNewArray* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LOperand* constructor = UseFixed(instr->constructor(), edi);
|
|
LCallNewArray* result = new(zone()) LCallNewArray(context, constructor);
|
|
return MarkAsCall(DefineFixed(result, eax), instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoCallFunction(HCallFunction* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LOperand* function = UseFixed(instr->function(), edi);
|
|
LCallFunction* call = new(zone()) LCallFunction(context, function);
|
|
return MarkAsCall(DefineFixed(call, eax), instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoCallRuntime(HCallRuntime* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
return MarkAsCall(DefineFixed(new(zone()) LCallRuntime(context), eax), 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 DefineSameAsFirst(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();
|
|
LOperand* temp1 = FixedTemp(eax);
|
|
LOperand* temp2 = FixedTemp(edx);
|
|
LInstruction* result = DefineFixed(new(zone()) LDivByConstI(
|
|
dividend, divisor, temp1, temp2), edx);
|
|
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 = UseFixed(instr->left(), eax);
|
|
LOperand* divisor = UseRegister(instr->right());
|
|
LOperand* temp = FixedTemp(edx);
|
|
LInstruction* result = DefineFixed(new(zone()) LDivI(
|
|
dividend, divisor, temp), eax);
|
|
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) {
|
|
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* temp1 = FixedTemp(eax);
|
|
LOperand* temp2 = FixedTemp(edx);
|
|
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),
|
|
edx);
|
|
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 = UseFixed(instr->left(), eax);
|
|
LOperand* divisor = UseRegister(instr->right());
|
|
LOperand* temp = FixedTemp(edx);
|
|
LInstruction* result = DefineFixed(new(zone()) LFlooringDivI(
|
|
dividend, divisor, temp), eax);
|
|
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();
|
|
LOperand* temp1 = FixedTemp(eax);
|
|
LOperand* temp2 = FixedTemp(edx);
|
|
LInstruction* result = DefineFixed(new(zone()) LModByConstI(
|
|
dividend, divisor, temp1, temp2), eax);
|
|
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 = UseFixed(instr->left(), eax);
|
|
LOperand* divisor = UseRegister(instr->right());
|
|
LOperand* temp = FixedTemp(edx);
|
|
LInstruction* result = DefineFixed(new(zone()) LModI(
|
|
dividend, divisor, temp), edx);
|
|
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()) {
|
|
DCHECK(instr->left()->representation().Equals(instr->representation()));
|
|
DCHECK(instr->right()->representation().Equals(instr->representation()));
|
|
LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand());
|
|
LOperand* right = UseOrConstant(instr->BetterRightOperand());
|
|
LOperand* temp = NULL;
|
|
if (instr->CheckFlag(HValue::kBailoutOnMinusZero)) {
|
|
temp = TempRegister();
|
|
}
|
|
LMulI* mul = new(zone()) LMulI(left, right, temp);
|
|
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()) {
|
|
DCHECK(instr->left()->representation().Equals(instr->representation()));
|
|
DCHECK(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()) {
|
|
DCHECK(instr->left()->representation().Equals(instr->representation()));
|
|
DCHECK(instr->right()->representation().Equals(instr->representation()));
|
|
// 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);
|
|
LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand());
|
|
HValue* right_candidate = instr->BetterRightOperand();
|
|
LOperand* 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().IsDouble()) {
|
|
return DoArithmeticD(Token::ADD, instr);
|
|
} else if (instr->representation().IsExternal()) {
|
|
DCHECK(instr->left()->representation().IsExternal());
|
|
DCHECK(instr->right()->representation().IsInteger32());
|
|
DCHECK(!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 {
|
|
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());
|
|
}
|
|
LMathMinMax* minmax = new(zone()) LMathMinMax(left, right);
|
|
return DefineSameAsFirst(minmax);
|
|
}
|
|
|
|
|
|
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(), xmm2);
|
|
LOperand* right =
|
|
exponent_type.IsDouble()
|
|
? UseFixedDouble(instr->right(), xmm1)
|
|
: UseFixed(instr->right(), MathPowTaggedDescriptor::exponent());
|
|
LPower* result = new(zone()) LPower(left, right);
|
|
return MarkAsCall(DefineFixedDouble(result, xmm3), instr,
|
|
CAN_DEOPTIMIZE_EAGERLY);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) {
|
|
DCHECK(instr->left()->representation().IsSmiOrTagged());
|
|
DCHECK(instr->right()->representation().IsSmiOrTagged());
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LOperand* left = UseFixed(instr->left(), edx);
|
|
LOperand* right = UseFixed(instr->right(), eax);
|
|
LCmpT* result = new(zone()) LCmpT(context, left, right);
|
|
return MarkAsCall(DefineFixed(result, eax), 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 = UseOrConstantAtStart(instr->right());
|
|
return new(zone()) LCompareNumericAndBranch(left, right);
|
|
} else {
|
|
DCHECK(r.IsDouble());
|
|
DCHECK(instr->left()->representation().IsDouble());
|
|
DCHECK(instr->right()->representation().IsDouble());
|
|
LOperand* left;
|
|
LOperand* right;
|
|
if (CanBeImmediateConstant(instr->left()) &&
|
|
CanBeImmediateConstant(instr->right())) {
|
|
// The code generator requires either both inputs to be constant
|
|
// operands, or neither.
|
|
left = UseConstant(instr->left());
|
|
right = UseConstant(instr->right());
|
|
} else {
|
|
left = UseRegisterAtStart(instr->left());
|
|
right = UseRegisterAtStart(instr->right());
|
|
}
|
|
return new(zone()) LCompareNumericAndBranch(left, right);
|
|
}
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch(
|
|
HCompareObjectEqAndBranch* instr) {
|
|
LOperand* left = UseRegisterAtStart(instr->left());
|
|
LOperand* right = UseOrConstantAtStart(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::DoIsObjectAndBranch(HIsObjectAndBranch* instr) {
|
|
DCHECK(instr->value()->representation().IsSmiOrTagged());
|
|
LOperand* temp = TempRegister();
|
|
return new(zone()) LIsObjectAndBranch(UseRegister(instr->value()), temp);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoIsStringAndBranch(HIsStringAndBranch* instr) {
|
|
DCHECK(instr->value()->representation().IsTagged());
|
|
LOperand* temp = TempRegister();
|
|
return new(zone()) LIsStringAndBranch(UseRegister(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(), esi);
|
|
LOperand* left = UseFixed(instr->left(), edx);
|
|
LOperand* right = UseFixed(instr->right(), eax);
|
|
|
|
LStringCompareAndBranch* result = new(zone())
|
|
LStringCompareAndBranch(context, left, right);
|
|
|
|
return MarkAsCall(result, instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoHasInstanceTypeAndBranch(
|
|
HHasInstanceTypeAndBranch* instr) {
|
|
DCHECK(instr->value()->representation().IsTagged());
|
|
return new(zone()) LHasInstanceTypeAndBranch(
|
|
UseRegisterAtStart(instr->value()),
|
|
TempRegister());
|
|
}
|
|
|
|
|
|
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(),
|
|
TempRegister());
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoMapEnumLength(HMapEnumLength* instr) {
|
|
LOperand* map = UseRegisterAtStart(instr->value());
|
|
return DefineAsRegister(new(zone()) LMapEnumLength(map));
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoDateField(HDateField* instr) {
|
|
LOperand* date = UseFixed(instr->value(), eax);
|
|
LDateField* result =
|
|
new(zone()) LDateField(date, FixedTemp(ecx), instr->index());
|
|
return MarkAsCall(DefineFixed(result, eax), 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));
|
|
}
|
|
|
|
|
|
LOperand* LChunkBuilder::GetSeqStringSetCharOperand(HSeqStringSetChar* instr) {
|
|
if (instr->encoding() == String::ONE_BYTE_ENCODING) {
|
|
if (FLAG_debug_code) {
|
|
return UseFixed(instr->value(), eax);
|
|
} else {
|
|
return UseFixedOrConstant(instr->value(), eax);
|
|
}
|
|
} else {
|
|
if (FLAG_debug_code) {
|
|
return UseRegisterAtStart(instr->value());
|
|
} else {
|
|
return UseRegisterOrConstantAtStart(instr->value());
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoSeqStringSetChar(HSeqStringSetChar* instr) {
|
|
LOperand* string = UseRegisterAtStart(instr->string());
|
|
LOperand* index = FLAG_debug_code
|
|
? UseRegisterAtStart(instr->index())
|
|
: UseRegisterOrConstantAtStart(instr->index());
|
|
LOperand* value = GetSeqStringSetCharOperand(instr);
|
|
LOperand* context = FLAG_debug_code ? UseFixed(instr->context(), esi) : 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) {
|
|
if (!FLAG_debug_code && instr->skip_check()) return NULL;
|
|
LOperand* index = UseRegisterOrConstantAtStart(instr->index());
|
|
LOperand* length = !index->IsConstantOperand()
|
|
? UseOrConstantAtStart(instr->length())
|
|
: UseAtStart(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);
|
|
LOperand* temp = TempRegister();
|
|
LInstruction* result =
|
|
DefineAsRegister(new(zone()) LNumberUntagD(value, temp));
|
|
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 = UseRegister(val);
|
|
return DefineSameAsFirst(new(zone()) LSmiUntag(value, false));
|
|
} else {
|
|
LOperand* value = UseRegister(val);
|
|
bool truncating = instr->CanTruncateToInt32();
|
|
LOperand* xmm_temp = !truncating ? FixedTemp(xmm1) : NULL;
|
|
LInstruction* result =
|
|
DefineSameAsFirst(new(zone()) LTaggedToI(value, xmm_temp));
|
|
if (!val->representation().IsSmi()) result = AssignEnvironment(result);
|
|
return result;
|
|
}
|
|
}
|
|
} else if (from.IsDouble()) {
|
|
if (to.IsTagged()) {
|
|
info()->MarkAsDeferredCalling();
|
|
LOperand* value = UseRegisterAtStart(val);
|
|
LOperand* temp = FLAG_inline_new ? TempRegister() : NULL;
|
|
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 {
|
|
DCHECK(to.IsInteger32());
|
|
bool truncating = instr->CanTruncateToInt32();
|
|
bool needs_temp = !truncating;
|
|
LOperand* value = needs_temp ? UseTempRegister(val) : UseRegister(val);
|
|
LOperand* temp = needs_temp ? TempRegister() : NULL;
|
|
LInstruction* result =
|
|
DefineAsRegister(new(zone()) LDoubleToI(value, temp));
|
|
if (!truncating) result = AssignEnvironment(result);
|
|
return result;
|
|
}
|
|
} else if (from.IsInteger32()) {
|
|
info()->MarkAsDeferredCalling();
|
|
if (to.IsTagged()) {
|
|
LOperand* value = UseRegister(val);
|
|
if (!instr->CheckFlag(HValue::kCanOverflow)) {
|
|
return DefineSameAsFirst(new(zone()) LSmiTag(value));
|
|
} else if (val->CheckFlag(HInstruction::kUint32)) {
|
|
LOperand* temp = TempRegister();
|
|
LNumberTagU* result = new(zone()) LNumberTagU(value, temp);
|
|
return AssignPointerMap(DefineSameAsFirst(result));
|
|
} else {
|
|
LOperand* temp = TempRegister();
|
|
LNumberTagI* result = new(zone()) LNumberTagI(value, temp);
|
|
return AssignPointerMap(DefineSameAsFirst(result));
|
|
}
|
|
} else if (to.IsSmi()) {
|
|
LOperand* value = UseRegister(val);
|
|
LInstruction* result = DefineSameAsFirst(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 = UseAtStart(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::DoCheckInstanceType(HCheckInstanceType* instr) {
|
|
LOperand* value = UseRegisterAtStart(instr->value());
|
|
LOperand* temp = TempRegister();
|
|
LCheckInstanceType* result = new(zone()) LCheckInstanceType(value, temp);
|
|
return AssignEnvironment(result);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoCheckValue(HCheckValue* instr) {
|
|
// If the object is in new space, we'll emit a global cell compare and so
|
|
// want the value in a register. If the object gets promoted before we
|
|
// emit code, we will still get the register but will do an immediate
|
|
// compare instead of the cell compare. This is safe.
|
|
LOperand* value = instr->object_in_new_space()
|
|
? UseRegisterAtStart(instr->value()) : UseAtStart(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();
|
|
if (input_rep.IsDouble()) {
|
|
LOperand* reg = UseRegister(value);
|
|
return DefineFixed(new(zone()) LClampDToUint8(reg), eax);
|
|
} else if (input_rep.IsInteger32()) {
|
|
LOperand* reg = UseFixed(value, eax);
|
|
return DefineFixed(new(zone()) LClampIToUint8(reg), eax);
|
|
} else {
|
|
DCHECK(input_rep.IsSmiOrTagged());
|
|
LOperand* reg = UseFixed(value, eax);
|
|
// Register allocator doesn't (yet) support allocation of double
|
|
// temps. Reserve xmm1 explicitly.
|
|
LOperand* temp = FixedTemp(xmm1);
|
|
LClampTToUint8* result = new(zone()) LClampTToUint8(reg, temp);
|
|
return AssignEnvironment(DefineFixed(result, eax));
|
|
}
|
|
}
|
|
|
|
|
|
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(), esi) : NULL;
|
|
LOperand* parameter_count = UseRegisterOrConstant(instr->parameter_count());
|
|
return new(zone()) LReturn(
|
|
UseFixed(instr->value(), eax), 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()) {
|
|
double value = instr->DoubleValue();
|
|
bool value_is_zero = bit_cast<uint64_t, double>(value) == 0;
|
|
LOperand* temp = value_is_zero ? NULL : 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(), esi);
|
|
LOperand* global_object =
|
|
UseFixed(instr->global_object(), LoadDescriptor::ReceiverRegister());
|
|
LOperand* vector = NULL;
|
|
if (FLAG_vector_ics) {
|
|
vector = FixedTemp(VectorLoadICDescriptor::VectorRegister());
|
|
}
|
|
|
|
LLoadGlobalGeneric* result =
|
|
new(zone()) LLoadGlobalGeneric(context, global_object, vector);
|
|
return MarkAsCall(DefineFixed(result, eax), instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoStoreGlobalCell(HStoreGlobalCell* instr) {
|
|
LStoreGlobalCell* result =
|
|
new(zone()) LStoreGlobalCell(UseRegister(instr->value()));
|
|
return instr->RequiresHoleCheck() ? AssignEnvironment(result) : result;
|
|
}
|
|
|
|
|
|
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* value;
|
|
LOperand* temp;
|
|
LOperand* 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) {
|
|
LOperand* obj = (instr->access().IsExternalMemory() &&
|
|
instr->access().offset() == 0)
|
|
? UseRegisterOrConstantAtStart(instr->object())
|
|
: UseRegisterAtStart(instr->object());
|
|
return DefineAsRegister(new(zone()) LLoadNamedField(obj));
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoLoadNamedGeneric(HLoadNamedGeneric* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LOperand* object =
|
|
UseFixed(instr->object(), LoadDescriptor::ReceiverRegister());
|
|
LOperand* vector = NULL;
|
|
if (FLAG_vector_ics) {
|
|
vector = FixedTemp(VectorLoadICDescriptor::VectorRegister());
|
|
}
|
|
LLoadNamedGeneric* result = new(zone()) LLoadNamedGeneric(
|
|
context, object, vector);
|
|
return MarkAsCall(DefineFixed(result, eax), instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoLoadFunctionPrototype(
|
|
HLoadFunctionPrototype* instr) {
|
|
return AssignEnvironment(DefineAsRegister(
|
|
new(zone()) LLoadFunctionPrototype(UseRegister(instr->function()),
|
|
TempRegister())));
|
|
}
|
|
|
|
|
|
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();
|
|
bool clobbers_key = ExternalArrayOpRequiresTemp(
|
|
instr->key()->representation(), elements_kind);
|
|
LOperand* key = clobbers_key
|
|
? UseTempRegister(instr->key())
|
|
: UseRegisterOrConstantAtStart(instr->key());
|
|
LInstruction* result = NULL;
|
|
|
|
if (!instr->is_typed_elements()) {
|
|
LOperand* obj = UseRegisterAtStart(instr->elements());
|
|
result = DefineAsRegister(new(zone()) LLoadKeyed(obj, key));
|
|
} else {
|
|
DCHECK(
|
|
(instr->representation().IsInteger32() &&
|
|
!(IsDoubleOrFloatElementsKind(instr->elements_kind()))) ||
|
|
(instr->representation().IsDouble() &&
|
|
(IsDoubleOrFloatElementsKind(instr->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
|
|
((instr->elements_kind() == EXTERNAL_UINT32_ELEMENTS ||
|
|
instr->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(), esi);
|
|
LOperand* object =
|
|
UseFixed(instr->object(), LoadDescriptor::ReceiverRegister());
|
|
LOperand* key = UseFixed(instr->key(), LoadDescriptor::NameRegister());
|
|
LOperand* vector = NULL;
|
|
if (FLAG_vector_ics) {
|
|
vector = FixedTemp(VectorLoadICDescriptor::VectorRegister());
|
|
}
|
|
LLoadKeyedGeneric* result =
|
|
new(zone()) LLoadKeyedGeneric(context, object, key, vector);
|
|
return MarkAsCall(DefineFixed(result, eax), instr);
|
|
}
|
|
|
|
|
|
LOperand* LChunkBuilder::GetStoreKeyedValueOperand(HStoreKeyed* instr) {
|
|
ElementsKind elements_kind = instr->elements_kind();
|
|
|
|
// Determine if we need a byte register in this case for the value.
|
|
bool val_is_fixed_register =
|
|
elements_kind == EXTERNAL_INT8_ELEMENTS ||
|
|
elements_kind == EXTERNAL_UINT8_ELEMENTS ||
|
|
elements_kind == EXTERNAL_UINT8_CLAMPED_ELEMENTS ||
|
|
elements_kind == UINT8_ELEMENTS ||
|
|
elements_kind == INT8_ELEMENTS ||
|
|
elements_kind == UINT8_CLAMPED_ELEMENTS;
|
|
if (val_is_fixed_register) {
|
|
return UseFixed(instr->value(), eax);
|
|
}
|
|
|
|
return UseRegister(instr->value());
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) {
|
|
if (!instr->is_typed_elements()) {
|
|
DCHECK(instr->elements()->representation().IsTagged());
|
|
DCHECK(instr->key()->representation().IsInteger32() ||
|
|
instr->key()->representation().IsSmi());
|
|
|
|
if (instr->value()->representation().IsDouble()) {
|
|
LOperand* object = UseRegisterAtStart(instr->elements());
|
|
LOperand* val = NULL;
|
|
val = UseRegisterAtStart(instr->value());
|
|
LOperand* key = UseRegisterOrConstantAtStart(instr->key());
|
|
return new(zone()) LStoreKeyed(object, key, val);
|
|
} else {
|
|
DCHECK(instr->value()->representation().IsSmiOrTagged());
|
|
bool needs_write_barrier = instr->NeedsWriteBarrier();
|
|
|
|
LOperand* obj = UseRegister(instr->elements());
|
|
LOperand* val;
|
|
LOperand* key;
|
|
if (needs_write_barrier) {
|
|
val = UseTempRegister(instr->value());
|
|
key = UseTempRegister(instr->key());
|
|
} else {
|
|
val = UseRegisterOrConstantAtStart(instr->value());
|
|
key = UseRegisterOrConstantAtStart(instr->key());
|
|
}
|
|
return new(zone()) LStoreKeyed(obj, key, val);
|
|
}
|
|
}
|
|
|
|
ElementsKind elements_kind = instr->elements_kind();
|
|
DCHECK(
|
|
(instr->value()->representation().IsInteger32() &&
|
|
!IsDoubleOrFloatElementsKind(elements_kind)) ||
|
|
(instr->value()->representation().IsDouble() &&
|
|
IsDoubleOrFloatElementsKind(elements_kind)));
|
|
DCHECK((instr->is_fixed_typed_array() &&
|
|
instr->elements()->representation().IsTagged()) ||
|
|
(instr->is_external() &&
|
|
instr->elements()->representation().IsExternal()));
|
|
|
|
LOperand* backing_store = UseRegister(instr->elements());
|
|
LOperand* val = GetStoreKeyedValueOperand(instr);
|
|
bool clobbers_key = ExternalArrayOpRequiresTemp(
|
|
instr->key()->representation(), elements_kind);
|
|
LOperand* key = clobbers_key
|
|
? UseTempRegister(instr->key())
|
|
: UseRegisterOrConstantAtStart(instr->key());
|
|
return new(zone()) LStoreKeyed(backing_store, key, val);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LOperand* object =
|
|
UseFixed(instr->object(), StoreDescriptor::ReceiverRegister());
|
|
LOperand* key = UseFixed(instr->key(), StoreDescriptor::NameRegister());
|
|
LOperand* value = UseFixed(instr->value(), StoreDescriptor::ValueRegister());
|
|
|
|
DCHECK(instr->object()->representation().IsTagged());
|
|
DCHECK(instr->key()->representation().IsTagged());
|
|
DCHECK(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(), eax);
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
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) {
|
|
DCHECK(!is_in_object);
|
|
DCHECK(!needs_write_barrier);
|
|
DCHECK(!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 (instr->field_representation().IsInteger8() ||
|
|
instr->field_representation().IsUInteger8()) {
|
|
// mov_b requires a byte register (i.e. any of eax, ebx, ecx, edx).
|
|
// Just force the value to be in eax and we're safe here.
|
|
val = UseFixed(instr->value(), eax);
|
|
} else if (needs_write_barrier) {
|
|
val = UseTempRegister(instr->value());
|
|
} else if (can_be_constant) {
|
|
val = UseRegisterOrConstant(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;
|
|
|
|
// We need a temporary register for write barrier of the map field.
|
|
LOperand* temp_map = needs_write_barrier_for_map ? TempRegister() : NULL;
|
|
|
|
return new(zone()) LStoreNamedField(obj, val, temp, temp_map);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LOperand* object =
|
|
UseFixed(instr->object(), StoreDescriptor::ReceiverRegister());
|
|
LOperand* value = UseFixed(instr->value(), StoreDescriptor::ValueRegister());
|
|
|
|
LStoreNamedGeneric* result =
|
|
new(zone()) LStoreNamedGeneric(context, object, value);
|
|
return MarkAsCall(result, instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoStringAdd(HStringAdd* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LOperand* left = UseFixed(instr->left(), edx);
|
|
LOperand* right = UseFixed(instr->right(), eax);
|
|
LStringAdd* string_add = new(zone()) LStringAdd(context, left, right);
|
|
return MarkAsCall(DefineFixed(string_add, eax), 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(), esi);
|
|
return MarkAsCall(
|
|
DefineFixed(new(zone()) LRegExpLiteral(context), eax), instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoFunctionLiteral(HFunctionLiteral* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
return MarkAsCall(
|
|
DefineFixed(new(zone()) LFunctionLiteral(context), eax), instr);
|
|
}
|
|
|
|
|
|
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.GetEnvironmentParameterRegister(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(kNotEnoughSpillSlotsForOsr);
|
|
spill_index = 0;
|
|
}
|
|
if (spill_index == 0) {
|
|
// The dynamic frame alignment state overwrites the first local.
|
|
// The first local is saved at the end of the unoptimized frame.
|
|
spill_index = graph()->osr()->UnoptimizedFrameSlots();
|
|
}
|
|
}
|
|
return DefineAsSpilled(new(zone()) LUnknownOSRValue, spill_index);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoCallStub(HCallStub* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LCallStub* result = new(zone()) LCallStub(context);
|
|
return MarkAsCall(DefineFixed(result, eax), 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(), eax);
|
|
LToFastProperties* result = new(zone()) LToFastProperties(object);
|
|
return MarkAsCall(DefineFixed(result, eax), instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoTypeof(HTypeof* instr) {
|
|
LOperand* context = UseFixed(instr->context(), esi);
|
|
LOperand* value = UseAtStart(instr->value());
|
|
LTypeof* result = new(zone()) LTypeof(context, value);
|
|
return MarkAsCall(DefineFixed(result, eax), instr);
|
|
}
|
|
|
|
|
|
LInstruction* LChunkBuilder::DoTypeofIsAndBranch(HTypeofIsAndBranch* 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(), esi);
|
|
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_->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);
|
|
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(), esi);
|
|
LOperand* object = UseFixed(instr->enumerable(), eax);
|
|
LForInPrepareMap* result = new(zone()) LForInPrepareMap(context, object);
|
|
return MarkAsCall(DefineFixed(result, eax), 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(), esi);
|
|
LOperand* function = UseRegisterAtStart(instr->function());
|
|
LAllocateBlockContext* result =
|
|
new(zone()) LAllocateBlockContext(context, function);
|
|
return MarkAsCall(DefineFixed(result, esi), instr);
|
|
}
|
|
|
|
|
|
} } // namespace v8::internal
|
|
|
|
#endif // V8_TARGET_ARCH_IA32
|