Index: src/ia32/full-codegen-ia32.cc |
diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc |
deleted file mode 100644 |
index 588b04e2b5b282f37c5eb90028e3699d8d98b2fa..0000000000000000000000000000000000000000 |
--- a/src/ia32/full-codegen-ia32.cc |
+++ /dev/null |
@@ -1,5346 +0,0 @@ |
-// Copyright 2012 the V8 project authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#include "src/v8.h" |
- |
-#if V8_TARGET_ARCH_IA32 |
- |
-#include "src/code-factory.h" |
-#include "src/code-stubs.h" |
-#include "src/codegen.h" |
-#include "src/compiler.h" |
-#include "src/debug.h" |
-#include "src/full-codegen.h" |
-#include "src/ic/ic.h" |
-#include "src/parser.h" |
-#include "src/scopes.h" |
- |
-namespace v8 { |
-namespace internal { |
- |
-#define __ ACCESS_MASM(masm_) |
- |
- |
-class JumpPatchSite BASE_EMBEDDED { |
- public: |
- explicit JumpPatchSite(MacroAssembler* masm) : masm_(masm) { |
-#ifdef DEBUG |
- info_emitted_ = false; |
-#endif |
- } |
- |
- ~JumpPatchSite() { |
- DCHECK(patch_site_.is_bound() == info_emitted_); |
- } |
- |
- void EmitJumpIfNotSmi(Register reg, |
- Label* target, |
- Label::Distance distance = Label::kFar) { |
- __ test(reg, Immediate(kSmiTagMask)); |
- EmitJump(not_carry, target, distance); // Always taken before patched. |
- } |
- |
- void EmitJumpIfSmi(Register reg, |
- Label* target, |
- Label::Distance distance = Label::kFar) { |
- __ test(reg, Immediate(kSmiTagMask)); |
- EmitJump(carry, target, distance); // Never taken before patched. |
- } |
- |
- void EmitPatchInfo() { |
- if (patch_site_.is_bound()) { |
- int delta_to_patch_site = masm_->SizeOfCodeGeneratedSince(&patch_site_); |
- DCHECK(is_uint8(delta_to_patch_site)); |
- __ test(eax, Immediate(delta_to_patch_site)); |
-#ifdef DEBUG |
- info_emitted_ = true; |
-#endif |
- } else { |
- __ nop(); // Signals no inlined code. |
- } |
- } |
- |
- private: |
- // jc will be patched with jz, jnc will become jnz. |
- void EmitJump(Condition cc, Label* target, Label::Distance distance) { |
- DCHECK(!patch_site_.is_bound() && !info_emitted_); |
- DCHECK(cc == carry || cc == not_carry); |
- __ bind(&patch_site_); |
- __ j(cc, target, distance); |
- } |
- |
- MacroAssembler* masm_; |
- Label patch_site_; |
-#ifdef DEBUG |
- bool info_emitted_; |
-#endif |
-}; |
- |
- |
-// Generate code for a JS function. On entry to the function the receiver |
-// and arguments have been pushed on the stack left to right, with the |
-// return address on top of them. The actual argument count matches the |
-// formal parameter count expected by the function. |
-// |
-// The live registers are: |
-// o edi: the JS function object being called (i.e. ourselves) |
-// o esi: our context |
-// o ebp: our caller's frame pointer |
-// o esp: stack pointer (pointing to return address) |
-// |
-// The function builds a JS frame. Please see JavaScriptFrameConstants in |
-// frames-ia32.h for its layout. |
-void FullCodeGenerator::Generate() { |
- CompilationInfo* info = info_; |
- profiling_counter_ = isolate()->factory()->NewCell( |
- Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate())); |
- SetFunctionPosition(function()); |
- Comment cmnt(masm_, "[ function compiled by full code generator"); |
- |
- ProfileEntryHookStub::MaybeCallEntryHook(masm_); |
- |
-#ifdef DEBUG |
- if (strlen(FLAG_stop_at) > 0 && |
- info->function()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { |
- __ int3(); |
- } |
-#endif |
- |
- // Sloppy mode functions and builtins need to replace the receiver with the |
- // global proxy when called as functions (without an explicit receiver |
- // object). |
- if (is_sloppy(info->language_mode()) && !info->is_native() && |
- info->MayUseThis()) { |
- Label ok; |
- // +1 for return address. |
- int receiver_offset = (info->scope()->num_parameters() + 1) * kPointerSize; |
- __ mov(ecx, Operand(esp, receiver_offset)); |
- |
- __ cmp(ecx, isolate()->factory()->undefined_value()); |
- __ j(not_equal, &ok, Label::kNear); |
- |
- __ mov(ecx, GlobalObjectOperand()); |
- __ mov(ecx, FieldOperand(ecx, GlobalObject::kGlobalProxyOffset)); |
- |
- __ mov(Operand(esp, receiver_offset), ecx); |
- |
- __ bind(&ok); |
- } |
- |
- // Open a frame scope to indicate that there is a frame on the stack. The |
- // MANUAL indicates that the scope shouldn't actually generate code to set up |
- // the frame (that is done below). |
- FrameScope frame_scope(masm_, StackFrame::MANUAL); |
- |
- info->set_prologue_offset(masm_->pc_offset()); |
- __ Prologue(info->IsCodePreAgingActive()); |
- info->AddNoFrameRange(0, masm_->pc_offset()); |
- |
- { Comment cmnt(masm_, "[ Allocate locals"); |
- int locals_count = info->scope()->num_stack_slots(); |
- // Generators allocate locals, if any, in context slots. |
- DCHECK(!IsGeneratorFunction(info->function()->kind()) || locals_count == 0); |
- if (locals_count == 1) { |
- __ push(Immediate(isolate()->factory()->undefined_value())); |
- } else if (locals_count > 1) { |
- if (locals_count >= 128) { |
- Label ok; |
- __ mov(ecx, esp); |
- __ sub(ecx, Immediate(locals_count * kPointerSize)); |
- ExternalReference stack_limit = |
- ExternalReference::address_of_real_stack_limit(isolate()); |
- __ cmp(ecx, Operand::StaticVariable(stack_limit)); |
- __ j(above_equal, &ok, Label::kNear); |
- __ InvokeBuiltin(Builtins::STACK_OVERFLOW, CALL_FUNCTION); |
- __ bind(&ok); |
- } |
- __ mov(eax, Immediate(isolate()->factory()->undefined_value())); |
- const int kMaxPushes = 32; |
- if (locals_count >= kMaxPushes) { |
- int loop_iterations = locals_count / kMaxPushes; |
- __ mov(ecx, loop_iterations); |
- Label loop_header; |
- __ bind(&loop_header); |
- // Do pushes. |
- for (int i = 0; i < kMaxPushes; i++) { |
- __ push(eax); |
- } |
- __ dec(ecx); |
- __ j(not_zero, &loop_header, Label::kNear); |
- } |
- int remaining = locals_count % kMaxPushes; |
- // Emit the remaining pushes. |
- for (int i = 0; i < remaining; i++) { |
- __ push(eax); |
- } |
- } |
- } |
- |
- bool function_in_register = true; |
- |
- // Possibly allocate a local context. |
- if (info->scope()->num_heap_slots() > 0) { |
- Comment cmnt(masm_, "[ Allocate context"); |
- bool need_write_barrier = true; |
- int slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
- // Argument to NewContext is the function, which is still in edi. |
- if (info->scope()->is_script_scope()) { |
- __ push(edi); |
- __ Push(info->scope()->GetScopeInfo(info->isolate())); |
- __ CallRuntime(Runtime::kNewScriptContext, 2); |
- } else if (slots <= FastNewContextStub::kMaximumSlots) { |
- FastNewContextStub stub(isolate(), slots); |
- __ CallStub(&stub); |
- // Result of FastNewContextStub is always in new space. |
- need_write_barrier = false; |
- } else { |
- __ push(edi); |
- __ CallRuntime(Runtime::kNewFunctionContext, 1); |
- } |
- function_in_register = false; |
- // Context is returned in eax. It replaces the context passed to us. |
- // It's saved in the stack and kept live in esi. |
- __ mov(esi, eax); |
- __ mov(Operand(ebp, StandardFrameConstants::kContextOffset), eax); |
- |
- // Copy parameters into context if necessary. |
- int num_parameters = info->scope()->num_parameters(); |
- int first_parameter = info->scope()->has_this_declaration() ? -1 : 0; |
- for (int i = first_parameter; i < num_parameters; i++) { |
- Variable* var = (i == -1) ? scope()->receiver() : scope()->parameter(i); |
- if (var->IsContextSlot()) { |
- int parameter_offset = StandardFrameConstants::kCallerSPOffset + |
- (num_parameters - 1 - i) * kPointerSize; |
- // Load parameter from stack. |
- __ mov(eax, Operand(ebp, parameter_offset)); |
- // Store it in the context. |
- int context_offset = Context::SlotOffset(var->index()); |
- __ mov(Operand(esi, context_offset), eax); |
- // Update the write barrier. This clobbers eax and ebx. |
- if (need_write_barrier) { |
- __ RecordWriteContextSlot(esi, |
- context_offset, |
- eax, |
- ebx, |
- kDontSaveFPRegs); |
- } else if (FLAG_debug_code) { |
- Label done; |
- __ JumpIfInNewSpace(esi, eax, &done, Label::kNear); |
- __ Abort(kExpectedNewSpaceObject); |
- __ bind(&done); |
- } |
- } |
- } |
- } |
- |
- // Possibly set up a local binding to the this function which is used in |
- // derived constructors with super calls. |
- Variable* this_function_var = scope()->this_function_var(); |
- if (this_function_var != nullptr) { |
- Comment cmnt(masm_, "[ This function"); |
- if (!function_in_register) { |
- __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
- // The write barrier clobbers register again, keep is marked as such. |
- } |
- SetVar(this_function_var, edi, ebx, edx); |
- } |
- |
- Variable* new_target_var = scope()->new_target_var(); |
- if (new_target_var != nullptr) { |
- Comment cmnt(masm_, "[ new.target"); |
- __ mov(eax, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
- Label non_adaptor_frame; |
- __ cmp(Operand(eax, StandardFrameConstants::kContextOffset), |
- Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
- __ j(not_equal, &non_adaptor_frame); |
- __ mov(eax, Operand(eax, StandardFrameConstants::kCallerFPOffset)); |
- |
- __ bind(&non_adaptor_frame); |
- __ cmp(Operand(eax, StandardFrameConstants::kMarkerOffset), |
- Immediate(Smi::FromInt(StackFrame::CONSTRUCT))); |
- |
- Label non_construct_frame, done; |
- __ j(not_equal, &non_construct_frame); |
- |
- // Construct frame |
- __ mov(eax, |
- Operand(eax, ConstructFrameConstants::kOriginalConstructorOffset)); |
- __ jmp(&done); |
- |
- // Non-construct frame |
- __ bind(&non_construct_frame); |
- __ mov(eax, Immediate(isolate()->factory()->undefined_value())); |
- |
- __ bind(&done); |
- SetVar(new_target_var, eax, ebx, edx); |
- } |
- |
- |
- // Possibly allocate RestParameters |
- int rest_index; |
- Variable* rest_param = scope()->rest_parameter(&rest_index); |
- if (rest_param) { |
- Comment cmnt(masm_, "[ Allocate rest parameter array"); |
- |
- int num_parameters = info->scope()->num_parameters(); |
- int offset = num_parameters * kPointerSize; |
- |
- __ lea(edx, |
- Operand(ebp, StandardFrameConstants::kCallerSPOffset + offset)); |
- __ push(edx); |
- __ push(Immediate(Smi::FromInt(num_parameters))); |
- __ push(Immediate(Smi::FromInt(rest_index))); |
- __ push(Immediate(Smi::FromInt(language_mode()))); |
- |
- RestParamAccessStub stub(isolate()); |
- __ CallStub(&stub); |
- |
- SetVar(rest_param, eax, ebx, edx); |
- } |
- |
- Variable* arguments = scope()->arguments(); |
- if (arguments != NULL) { |
- // Function uses arguments object. |
- Comment cmnt(masm_, "[ Allocate arguments object"); |
- if (function_in_register) { |
- __ push(edi); |
- } else { |
- __ push(Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
- } |
- // Receiver is just before the parameters on the caller's stack. |
- int num_parameters = info->scope()->num_parameters(); |
- int offset = num_parameters * kPointerSize; |
- __ lea(edx, |
- Operand(ebp, StandardFrameConstants::kCallerSPOffset + offset)); |
- __ push(edx); |
- __ push(Immediate(Smi::FromInt(num_parameters))); |
- // Arguments to ArgumentsAccessStub: |
- // function, receiver address, parameter count. |
- // The stub will rewrite receiver and parameter count if the previous |
- // stack frame was an arguments adapter frame. |
- ArgumentsAccessStub::Type type; |
- if (is_strict(language_mode()) || !is_simple_parameter_list()) { |
- type = ArgumentsAccessStub::NEW_STRICT; |
- } else if (function()->has_duplicate_parameters()) { |
- type = ArgumentsAccessStub::NEW_SLOPPY_SLOW; |
- } else { |
- type = ArgumentsAccessStub::NEW_SLOPPY_FAST; |
- } |
- |
- ArgumentsAccessStub stub(isolate(), type); |
- __ CallStub(&stub); |
- |
- SetVar(arguments, eax, ebx, edx); |
- } |
- |
- if (FLAG_trace) { |
- __ CallRuntime(Runtime::kTraceEnter, 0); |
- } |
- |
- // Visit the declarations and body unless there is an illegal |
- // redeclaration. |
- if (scope()->HasIllegalRedeclaration()) { |
- Comment cmnt(masm_, "[ Declarations"); |
- scope()->VisitIllegalRedeclaration(this); |
- |
- } else { |
- PrepareForBailoutForId(BailoutId::FunctionEntry(), NO_REGISTERS); |
- { Comment cmnt(masm_, "[ Declarations"); |
- VisitDeclarations(scope()->declarations()); |
- } |
- |
- { Comment cmnt(masm_, "[ Stack check"); |
- PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS); |
- Label ok; |
- ExternalReference stack_limit |
- = ExternalReference::address_of_stack_limit(isolate()); |
- __ cmp(esp, Operand::StaticVariable(stack_limit)); |
- __ j(above_equal, &ok, Label::kNear); |
- __ call(isolate()->builtins()->StackCheck(), RelocInfo::CODE_TARGET); |
- __ bind(&ok); |
- } |
- |
- { Comment cmnt(masm_, "[ Body"); |
- DCHECK(loop_depth() == 0); |
- VisitStatements(function()->body()); |
- DCHECK(loop_depth() == 0); |
- } |
- } |
- |
- // Always emit a 'return undefined' in case control fell off the end of |
- // the body. |
- { Comment cmnt(masm_, "[ return <undefined>;"); |
- __ mov(eax, isolate()->factory()->undefined_value()); |
- EmitReturnSequence(); |
- } |
-} |
- |
- |
-void FullCodeGenerator::ClearAccumulator() { |
- __ Move(eax, Immediate(Smi::FromInt(0))); |
-} |
- |
- |
-void FullCodeGenerator::EmitProfilingCounterDecrement(int delta) { |
- __ mov(ebx, Immediate(profiling_counter_)); |
- __ sub(FieldOperand(ebx, Cell::kValueOffset), |
- Immediate(Smi::FromInt(delta))); |
-} |
- |
- |
-void FullCodeGenerator::EmitProfilingCounterReset() { |
- int reset_value = FLAG_interrupt_budget; |
- __ mov(ebx, Immediate(profiling_counter_)); |
- __ mov(FieldOperand(ebx, Cell::kValueOffset), |
- Immediate(Smi::FromInt(reset_value))); |
-} |
- |
- |
-void FullCodeGenerator::EmitBackEdgeBookkeeping(IterationStatement* stmt, |
- Label* back_edge_target) { |
- Comment cmnt(masm_, "[ Back edge bookkeeping"); |
- Label ok; |
- |
- DCHECK(back_edge_target->is_bound()); |
- int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target); |
- int weight = Min(kMaxBackEdgeWeight, |
- Max(1, distance / kCodeSizeMultiplier)); |
- EmitProfilingCounterDecrement(weight); |
- __ j(positive, &ok, Label::kNear); |
- __ call(isolate()->builtins()->InterruptCheck(), RelocInfo::CODE_TARGET); |
- |
- // Record a mapping of this PC offset to the OSR id. This is used to find |
- // the AST id from the unoptimized code in order to use it as a key into |
- // the deoptimization input data found in the optimized code. |
- RecordBackEdge(stmt->OsrEntryId()); |
- |
- EmitProfilingCounterReset(); |
- |
- __ bind(&ok); |
- PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS); |
- // Record a mapping of the OSR id to this PC. This is used if the OSR |
- // entry becomes the target of a bailout. We don't expect it to be, but |
- // we want it to work if it is. |
- PrepareForBailoutForId(stmt->OsrEntryId(), NO_REGISTERS); |
-} |
- |
- |
-void FullCodeGenerator::EmitReturnSequence() { |
- Comment cmnt(masm_, "[ Return sequence"); |
- if (return_label_.is_bound()) { |
- __ jmp(&return_label_); |
- } else { |
- // Common return label |
- __ bind(&return_label_); |
- if (FLAG_trace) { |
- __ push(eax); |
- __ CallRuntime(Runtime::kTraceExit, 1); |
- } |
- // Pretend that the exit is a backwards jump to the entry. |
- int weight = 1; |
- if (info_->ShouldSelfOptimize()) { |
- weight = FLAG_interrupt_budget / FLAG_self_opt_count; |
- } else { |
- int distance = masm_->pc_offset(); |
- weight = Min(kMaxBackEdgeWeight, |
- Max(1, distance / kCodeSizeMultiplier)); |
- } |
- EmitProfilingCounterDecrement(weight); |
- Label ok; |
- __ j(positive, &ok, Label::kNear); |
- __ push(eax); |
- __ call(isolate()->builtins()->InterruptCheck(), |
- RelocInfo::CODE_TARGET); |
- __ pop(eax); |
- EmitProfilingCounterReset(); |
- __ bind(&ok); |
- |
- SetReturnPosition(function()); |
- int no_frame_start = masm_->pc_offset(); |
- __ leave(); |
- |
- int arg_count = info_->scope()->num_parameters() + 1; |
- int arguments_bytes = arg_count * kPointerSize; |
- __ Ret(arguments_bytes, ecx); |
- info_->AddNoFrameRange(no_frame_start, masm_->pc_offset()); |
- } |
-} |
- |
- |
-void FullCodeGenerator::StackValueContext::Plug(Variable* var) const { |
- DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
- MemOperand operand = codegen()->VarOperand(var, result_register()); |
- // Memory operands can be pushed directly. |
- __ push(operand); |
-} |
- |
- |
-void FullCodeGenerator::EffectContext::Plug(Heap::RootListIndex index) const { |
- UNREACHABLE(); // Not used on IA32. |
-} |
- |
- |
-void FullCodeGenerator::AccumulatorValueContext::Plug( |
- Heap::RootListIndex index) const { |
- UNREACHABLE(); // Not used on IA32. |
-} |
- |
- |
-void FullCodeGenerator::StackValueContext::Plug( |
- Heap::RootListIndex index) const { |
- UNREACHABLE(); // Not used on IA32. |
-} |
- |
- |
-void FullCodeGenerator::TestContext::Plug(Heap::RootListIndex index) const { |
- UNREACHABLE(); // Not used on IA32. |
-} |
- |
- |
-void FullCodeGenerator::EffectContext::Plug(Handle<Object> lit) const { |
-} |
- |
- |
-void FullCodeGenerator::AccumulatorValueContext::Plug( |
- Handle<Object> lit) const { |
- if (lit->IsSmi()) { |
- __ SafeMove(result_register(), Immediate(lit)); |
- } else { |
- __ Move(result_register(), Immediate(lit)); |
- } |
-} |
- |
- |
-void FullCodeGenerator::StackValueContext::Plug(Handle<Object> lit) const { |
- if (lit->IsSmi()) { |
- __ SafePush(Immediate(lit)); |
- } else { |
- __ push(Immediate(lit)); |
- } |
-} |
- |
- |
-void FullCodeGenerator::TestContext::Plug(Handle<Object> lit) const { |
- codegen()->PrepareForBailoutBeforeSplit(condition(), |
- true, |
- true_label_, |
- false_label_); |
- DCHECK(!lit->IsUndetectableObject()); // There are no undetectable literals. |
- if (lit->IsUndefined() || lit->IsNull() || lit->IsFalse()) { |
- if (false_label_ != fall_through_) __ jmp(false_label_); |
- } else if (lit->IsTrue() || lit->IsJSObject()) { |
- if (true_label_ != fall_through_) __ jmp(true_label_); |
- } else if (lit->IsString()) { |
- if (String::cast(*lit)->length() == 0) { |
- if (false_label_ != fall_through_) __ jmp(false_label_); |
- } else { |
- if (true_label_ != fall_through_) __ jmp(true_label_); |
- } |
- } else if (lit->IsSmi()) { |
- if (Smi::cast(*lit)->value() == 0) { |
- if (false_label_ != fall_through_) __ jmp(false_label_); |
- } else { |
- if (true_label_ != fall_through_) __ jmp(true_label_); |
- } |
- } else { |
- // For simplicity we always test the accumulator register. |
- __ mov(result_register(), lit); |
- codegen()->DoTest(this); |
- } |
-} |
- |
- |
-void FullCodeGenerator::EffectContext::DropAndPlug(int count, |
- Register reg) const { |
- DCHECK(count > 0); |
- __ Drop(count); |
-} |
- |
- |
-void FullCodeGenerator::AccumulatorValueContext::DropAndPlug( |
- int count, |
- Register reg) const { |
- DCHECK(count > 0); |
- __ Drop(count); |
- __ Move(result_register(), reg); |
-} |
- |
- |
-void FullCodeGenerator::StackValueContext::DropAndPlug(int count, |
- Register reg) const { |
- DCHECK(count > 0); |
- if (count > 1) __ Drop(count - 1); |
- __ mov(Operand(esp, 0), reg); |
-} |
- |
- |
-void FullCodeGenerator::TestContext::DropAndPlug(int count, |
- Register reg) const { |
- DCHECK(count > 0); |
- // For simplicity we always test the accumulator register. |
- __ Drop(count); |
- __ Move(result_register(), reg); |
- codegen()->PrepareForBailoutBeforeSplit(condition(), false, NULL, NULL); |
- codegen()->DoTest(this); |
-} |
- |
- |
-void FullCodeGenerator::EffectContext::Plug(Label* materialize_true, |
- Label* materialize_false) const { |
- DCHECK(materialize_true == materialize_false); |
- __ bind(materialize_true); |
-} |
- |
- |
-void FullCodeGenerator::AccumulatorValueContext::Plug( |
- Label* materialize_true, |
- Label* materialize_false) const { |
- Label done; |
- __ bind(materialize_true); |
- __ mov(result_register(), isolate()->factory()->true_value()); |
- __ jmp(&done, Label::kNear); |
- __ bind(materialize_false); |
- __ mov(result_register(), isolate()->factory()->false_value()); |
- __ bind(&done); |
-} |
- |
- |
-void FullCodeGenerator::StackValueContext::Plug( |
- Label* materialize_true, |
- Label* materialize_false) const { |
- Label done; |
- __ bind(materialize_true); |
- __ push(Immediate(isolate()->factory()->true_value())); |
- __ jmp(&done, Label::kNear); |
- __ bind(materialize_false); |
- __ push(Immediate(isolate()->factory()->false_value())); |
- __ bind(&done); |
-} |
- |
- |
-void FullCodeGenerator::TestContext::Plug(Label* materialize_true, |
- Label* materialize_false) const { |
- DCHECK(materialize_true == true_label_); |
- DCHECK(materialize_false == false_label_); |
-} |
- |
- |
-void FullCodeGenerator::AccumulatorValueContext::Plug(bool flag) const { |
- Handle<Object> value = flag |
- ? isolate()->factory()->true_value() |
- : isolate()->factory()->false_value(); |
- __ mov(result_register(), value); |
-} |
- |
- |
-void FullCodeGenerator::StackValueContext::Plug(bool flag) const { |
- Handle<Object> value = flag |
- ? isolate()->factory()->true_value() |
- : isolate()->factory()->false_value(); |
- __ push(Immediate(value)); |
-} |
- |
- |
-void FullCodeGenerator::TestContext::Plug(bool flag) const { |
- codegen()->PrepareForBailoutBeforeSplit(condition(), |
- true, |
- true_label_, |
- false_label_); |
- if (flag) { |
- if (true_label_ != fall_through_) __ jmp(true_label_); |
- } else { |
- if (false_label_ != fall_through_) __ jmp(false_label_); |
- } |
-} |
- |
- |
-void FullCodeGenerator::DoTest(Expression* condition, |
- Label* if_true, |
- Label* if_false, |
- Label* fall_through) { |
- Handle<Code> ic = ToBooleanStub::GetUninitialized(isolate()); |
- CallIC(ic, condition->test_id()); |
- __ test(result_register(), result_register()); |
- // The stub returns nonzero for true. |
- Split(not_zero, if_true, if_false, fall_through); |
-} |
- |
- |
-void FullCodeGenerator::Split(Condition cc, |
- Label* if_true, |
- Label* if_false, |
- Label* fall_through) { |
- if (if_false == fall_through) { |
- __ j(cc, if_true); |
- } else if (if_true == fall_through) { |
- __ j(NegateCondition(cc), if_false); |
- } else { |
- __ j(cc, if_true); |
- __ jmp(if_false); |
- } |
-} |
- |
- |
-MemOperand FullCodeGenerator::StackOperand(Variable* var) { |
- DCHECK(var->IsStackAllocated()); |
- // Offset is negative because higher indexes are at lower addresses. |
- int offset = -var->index() * kPointerSize; |
- // Adjust by a (parameter or local) base offset. |
- if (var->IsParameter()) { |
- offset += (info_->scope()->num_parameters() + 1) * kPointerSize; |
- } else { |
- offset += JavaScriptFrameConstants::kLocal0Offset; |
- } |
- return Operand(ebp, offset); |
-} |
- |
- |
-MemOperand FullCodeGenerator::VarOperand(Variable* var, Register scratch) { |
- DCHECK(var->IsContextSlot() || var->IsStackAllocated()); |
- if (var->IsContextSlot()) { |
- int context_chain_length = scope()->ContextChainLength(var->scope()); |
- __ LoadContext(scratch, context_chain_length); |
- return ContextOperand(scratch, var->index()); |
- } else { |
- return StackOperand(var); |
- } |
-} |
- |
- |
-void FullCodeGenerator::GetVar(Register dest, Variable* var) { |
- DCHECK(var->IsContextSlot() || var->IsStackAllocated()); |
- MemOperand location = VarOperand(var, dest); |
- __ mov(dest, location); |
-} |
- |
- |
-void FullCodeGenerator::SetVar(Variable* var, |
- Register src, |
- Register scratch0, |
- Register scratch1) { |
- DCHECK(var->IsContextSlot() || var->IsStackAllocated()); |
- DCHECK(!scratch0.is(src)); |
- DCHECK(!scratch0.is(scratch1)); |
- DCHECK(!scratch1.is(src)); |
- MemOperand location = VarOperand(var, scratch0); |
- __ mov(location, src); |
- |
- // Emit the write barrier code if the location is in the heap. |
- if (var->IsContextSlot()) { |
- int offset = Context::SlotOffset(var->index()); |
- DCHECK(!scratch0.is(esi) && !src.is(esi) && !scratch1.is(esi)); |
- __ RecordWriteContextSlot(scratch0, offset, src, scratch1, kDontSaveFPRegs); |
- } |
-} |
- |
- |
-void FullCodeGenerator::PrepareForBailoutBeforeSplit(Expression* expr, |
- bool should_normalize, |
- Label* if_true, |
- Label* if_false) { |
- // Only prepare for bailouts before splits if we're in a test |
- // context. Otherwise, we let the Visit function deal with the |
- // preparation to avoid preparing with the same AST id twice. |
- if (!context()->IsTest() || !info_->IsOptimizable()) return; |
- |
- Label skip; |
- if (should_normalize) __ jmp(&skip, Label::kNear); |
- PrepareForBailout(expr, TOS_REG); |
- if (should_normalize) { |
- __ cmp(eax, isolate()->factory()->true_value()); |
- Split(equal, if_true, if_false, NULL); |
- __ bind(&skip); |
- } |
-} |
- |
- |
-void FullCodeGenerator::EmitDebugCheckDeclarationContext(Variable* variable) { |
- // The variable in the declaration always resides in the current context. |
- DCHECK_EQ(0, scope()->ContextChainLength(variable->scope())); |
- if (generate_debug_code_) { |
- // Check that we're not inside a with or catch context. |
- __ mov(ebx, FieldOperand(esi, HeapObject::kMapOffset)); |
- __ cmp(ebx, isolate()->factory()->with_context_map()); |
- __ Check(not_equal, kDeclarationInWithContext); |
- __ cmp(ebx, isolate()->factory()->catch_context_map()); |
- __ Check(not_equal, kDeclarationInCatchContext); |
- } |
-} |
- |
- |
-void FullCodeGenerator::VisitVariableDeclaration( |
- VariableDeclaration* declaration) { |
- // If it was not possible to allocate the variable at compile time, we |
- // need to "declare" it at runtime to make sure it actually exists in the |
- // local context. |
- VariableProxy* proxy = declaration->proxy(); |
- VariableMode mode = declaration->mode(); |
- Variable* variable = proxy->var(); |
- bool hole_init = mode == LET || mode == CONST || mode == CONST_LEGACY; |
- switch (variable->location()) { |
- case VariableLocation::GLOBAL: |
- case VariableLocation::UNALLOCATED: |
- globals_->Add(variable->name(), zone()); |
- globals_->Add(variable->binding_needs_init() |
- ? isolate()->factory()->the_hole_value() |
- : isolate()->factory()->undefined_value(), zone()); |
- break; |
- |
- case VariableLocation::PARAMETER: |
- case VariableLocation::LOCAL: |
- if (hole_init) { |
- Comment cmnt(masm_, "[ VariableDeclaration"); |
- __ mov(StackOperand(variable), |
- Immediate(isolate()->factory()->the_hole_value())); |
- } |
- break; |
- |
- case VariableLocation::CONTEXT: |
- if (hole_init) { |
- Comment cmnt(masm_, "[ VariableDeclaration"); |
- EmitDebugCheckDeclarationContext(variable); |
- __ mov(ContextOperand(esi, variable->index()), |
- Immediate(isolate()->factory()->the_hole_value())); |
- // No write barrier since the hole value is in old space. |
- PrepareForBailoutForId(proxy->id(), NO_REGISTERS); |
- } |
- break; |
- |
- case VariableLocation::LOOKUP: { |
- Comment cmnt(masm_, "[ VariableDeclaration"); |
- __ push(esi); |
- __ push(Immediate(variable->name())); |
- // VariableDeclaration nodes are always introduced in one of four modes. |
- DCHECK(IsDeclaredVariableMode(mode)); |
- PropertyAttributes attr = |
- IsImmutableVariableMode(mode) ? READ_ONLY : NONE; |
- __ push(Immediate(Smi::FromInt(attr))); |
- // Push initial value, if any. |
- // Note: For variables we must not push an initial value (such as |
- // 'undefined') because we may have a (legal) redeclaration and we |
- // must not destroy the current value. |
- if (hole_init) { |
- __ push(Immediate(isolate()->factory()->the_hole_value())); |
- } else { |
- __ push(Immediate(Smi::FromInt(0))); // Indicates no initial value. |
- } |
- __ CallRuntime(Runtime::kDeclareLookupSlot, 4); |
- break; |
- } |
- } |
-} |
- |
- |
-void FullCodeGenerator::VisitFunctionDeclaration( |
- FunctionDeclaration* declaration) { |
- VariableProxy* proxy = declaration->proxy(); |
- Variable* variable = proxy->var(); |
- switch (variable->location()) { |
- case VariableLocation::GLOBAL: |
- case VariableLocation::UNALLOCATED: { |
- globals_->Add(variable->name(), zone()); |
- Handle<SharedFunctionInfo> function = |
- Compiler::GetSharedFunctionInfo(declaration->fun(), script(), info_); |
- // Check for stack-overflow exception. |
- if (function.is_null()) return SetStackOverflow(); |
- globals_->Add(function, zone()); |
- break; |
- } |
- |
- case VariableLocation::PARAMETER: |
- case VariableLocation::LOCAL: { |
- Comment cmnt(masm_, "[ FunctionDeclaration"); |
- VisitForAccumulatorValue(declaration->fun()); |
- __ mov(StackOperand(variable), result_register()); |
- break; |
- } |
- |
- case VariableLocation::CONTEXT: { |
- Comment cmnt(masm_, "[ FunctionDeclaration"); |
- EmitDebugCheckDeclarationContext(variable); |
- VisitForAccumulatorValue(declaration->fun()); |
- __ mov(ContextOperand(esi, variable->index()), result_register()); |
- // We know that we have written a function, which is not a smi. |
- __ RecordWriteContextSlot(esi, |
- Context::SlotOffset(variable->index()), |
- result_register(), |
- ecx, |
- kDontSaveFPRegs, |
- EMIT_REMEMBERED_SET, |
- OMIT_SMI_CHECK); |
- PrepareForBailoutForId(proxy->id(), NO_REGISTERS); |
- break; |
- } |
- |
- case VariableLocation::LOOKUP: { |
- Comment cmnt(masm_, "[ FunctionDeclaration"); |
- __ push(esi); |
- __ push(Immediate(variable->name())); |
- __ push(Immediate(Smi::FromInt(NONE))); |
- VisitForStackValue(declaration->fun()); |
- __ CallRuntime(Runtime::kDeclareLookupSlot, 4); |
- break; |
- } |
- } |
-} |
- |
- |
-void FullCodeGenerator::DeclareGlobals(Handle<FixedArray> pairs) { |
- // Call the runtime to declare the globals. |
- __ push(esi); // The context is the first argument. |
- __ Push(pairs); |
- __ Push(Smi::FromInt(DeclareGlobalsFlags())); |
- __ CallRuntime(Runtime::kDeclareGlobals, 3); |
- // Return value is ignored. |
-} |
- |
- |
-void FullCodeGenerator::DeclareModules(Handle<FixedArray> descriptions) { |
- // Call the runtime to declare the modules. |
- __ Push(descriptions); |
- __ CallRuntime(Runtime::kDeclareModules, 1); |
- // Return value is ignored. |
-} |
- |
- |
-void FullCodeGenerator::VisitSwitchStatement(SwitchStatement* stmt) { |
- Comment cmnt(masm_, "[ SwitchStatement"); |
- Breakable nested_statement(this, stmt); |
- SetStatementPosition(stmt); |
- |
- // Keep the switch value on the stack until a case matches. |
- VisitForStackValue(stmt->tag()); |
- PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS); |
- |
- ZoneList<CaseClause*>* clauses = stmt->cases(); |
- CaseClause* default_clause = NULL; // Can occur anywhere in the list. |
- |
- Label next_test; // Recycled for each test. |
- // Compile all the tests with branches to their bodies. |
- for (int i = 0; i < clauses->length(); i++) { |
- CaseClause* clause = clauses->at(i); |
- clause->body_target()->Unuse(); |
- |
- // The default is not a test, but remember it as final fall through. |
- if (clause->is_default()) { |
- default_clause = clause; |
- continue; |
- } |
- |
- Comment cmnt(masm_, "[ Case comparison"); |
- __ bind(&next_test); |
- next_test.Unuse(); |
- |
- // Compile the label expression. |
- VisitForAccumulatorValue(clause->label()); |
- |
- // Perform the comparison as if via '==='. |
- __ mov(edx, Operand(esp, 0)); // Switch value. |
- bool inline_smi_code = ShouldInlineSmiCase(Token::EQ_STRICT); |
- JumpPatchSite patch_site(masm_); |
- if (inline_smi_code) { |
- Label slow_case; |
- __ mov(ecx, edx); |
- __ or_(ecx, eax); |
- patch_site.EmitJumpIfNotSmi(ecx, &slow_case, Label::kNear); |
- |
- __ cmp(edx, eax); |
- __ j(not_equal, &next_test); |
- __ Drop(1); // Switch value is no longer needed. |
- __ jmp(clause->body_target()); |
- __ bind(&slow_case); |
- } |
- |
- SetExpressionPosition(clause); |
- Handle<Code> ic = CodeFactory::CompareIC(isolate(), Token::EQ_STRICT, |
- strength(language_mode())).code(); |
- CallIC(ic, clause->CompareId()); |
- patch_site.EmitPatchInfo(); |
- |
- Label skip; |
- __ jmp(&skip, Label::kNear); |
- PrepareForBailout(clause, TOS_REG); |
- __ cmp(eax, isolate()->factory()->true_value()); |
- __ j(not_equal, &next_test); |
- __ Drop(1); |
- __ jmp(clause->body_target()); |
- __ bind(&skip); |
- |
- __ test(eax, eax); |
- __ j(not_equal, &next_test); |
- __ Drop(1); // Switch value is no longer needed. |
- __ jmp(clause->body_target()); |
- } |
- |
- // Discard the test value and jump to the default if present, otherwise to |
- // the end of the statement. |
- __ bind(&next_test); |
- __ Drop(1); // Switch value is no longer needed. |
- if (default_clause == NULL) { |
- __ jmp(nested_statement.break_label()); |
- } else { |
- __ jmp(default_clause->body_target()); |
- } |
- |
- // Compile all the case bodies. |
- for (int i = 0; i < clauses->length(); i++) { |
- Comment cmnt(masm_, "[ Case body"); |
- CaseClause* clause = clauses->at(i); |
- __ bind(clause->body_target()); |
- PrepareForBailoutForId(clause->EntryId(), NO_REGISTERS); |
- VisitStatements(clause->statements()); |
- } |
- |
- __ bind(nested_statement.break_label()); |
- PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS); |
-} |
- |
- |
-void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) { |
- Comment cmnt(masm_, "[ ForInStatement"); |
- SetStatementPosition(stmt, SKIP_BREAK); |
- |
- FeedbackVectorSlot slot = stmt->ForInFeedbackSlot(); |
- |
- Label loop, exit; |
- ForIn loop_statement(this, stmt); |
- increment_loop_depth(); |
- |
- // Get the object to enumerate over. If the object is null or undefined, skip |
- // over the loop. See ECMA-262 version 5, section 12.6.4. |
- SetExpressionAsStatementPosition(stmt->enumerable()); |
- VisitForAccumulatorValue(stmt->enumerable()); |
- __ cmp(eax, isolate()->factory()->undefined_value()); |
- __ j(equal, &exit); |
- __ cmp(eax, isolate()->factory()->null_value()); |
- __ j(equal, &exit); |
- |
- PrepareForBailoutForId(stmt->PrepareId(), TOS_REG); |
- |
- // Convert the object to a JS object. |
- Label convert, done_convert; |
- __ JumpIfSmi(eax, &convert, Label::kNear); |
- __ CmpObjectType(eax, FIRST_SPEC_OBJECT_TYPE, ecx); |
- __ j(above_equal, &done_convert, Label::kNear); |
- __ bind(&convert); |
- __ push(eax); |
- __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); |
- __ bind(&done_convert); |
- PrepareForBailoutForId(stmt->ToObjectId(), TOS_REG); |
- __ push(eax); |
- |
- // Check for proxies. |
- Label call_runtime, use_cache, fixed_array; |
- STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); |
- __ CmpObjectType(eax, LAST_JS_PROXY_TYPE, ecx); |
- __ j(below_equal, &call_runtime); |
- |
- // Check cache validity in generated code. This is a fast case for |
- // the JSObject::IsSimpleEnum cache validity checks. If we cannot |
- // guarantee cache validity, call the runtime system to check cache |
- // validity or get the property names in a fixed array. |
- __ CheckEnumCache(&call_runtime); |
- |
- __ mov(eax, FieldOperand(eax, HeapObject::kMapOffset)); |
- __ jmp(&use_cache, Label::kNear); |
- |
- // Get the set of properties to enumerate. |
- __ bind(&call_runtime); |
- __ push(eax); |
- __ CallRuntime(Runtime::kGetPropertyNamesFast, 1); |
- PrepareForBailoutForId(stmt->EnumId(), TOS_REG); |
- __ cmp(FieldOperand(eax, HeapObject::kMapOffset), |
- isolate()->factory()->meta_map()); |
- __ j(not_equal, &fixed_array); |
- |
- |
- // We got a map in register eax. Get the enumeration cache from it. |
- Label no_descriptors; |
- __ bind(&use_cache); |
- |
- __ EnumLength(edx, eax); |
- __ cmp(edx, Immediate(Smi::FromInt(0))); |
- __ j(equal, &no_descriptors); |
- |
- __ LoadInstanceDescriptors(eax, ecx); |
- __ mov(ecx, FieldOperand(ecx, DescriptorArray::kEnumCacheOffset)); |
- __ mov(ecx, FieldOperand(ecx, DescriptorArray::kEnumCacheBridgeCacheOffset)); |
- |
- // Set up the four remaining stack slots. |
- __ push(eax); // Map. |
- __ push(ecx); // Enumeration cache. |
- __ push(edx); // Number of valid entries for the map in the enum cache. |
- __ push(Immediate(Smi::FromInt(0))); // Initial index. |
- __ jmp(&loop); |
- |
- __ bind(&no_descriptors); |
- __ add(esp, Immediate(kPointerSize)); |
- __ jmp(&exit); |
- |
- // We got a fixed array in register eax. Iterate through that. |
- Label non_proxy; |
- __ bind(&fixed_array); |
- |
- // No need for a write barrier, we are storing a Smi in the feedback vector. |
- __ LoadHeapObject(ebx, FeedbackVector()); |
- int vector_index = FeedbackVector()->GetIndex(slot); |
- __ mov(FieldOperand(ebx, FixedArray::OffsetOfElementAt(vector_index)), |
- Immediate(TypeFeedbackVector::MegamorphicSentinel(isolate()))); |
- |
- __ mov(ebx, Immediate(Smi::FromInt(1))); // Smi indicates slow check |
- __ mov(ecx, Operand(esp, 0 * kPointerSize)); // Get enumerated object |
- STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); |
- __ CmpObjectType(ecx, LAST_JS_PROXY_TYPE, ecx); |
- __ j(above, &non_proxy); |
- __ Move(ebx, Immediate(Smi::FromInt(0))); // Zero indicates proxy |
- __ bind(&non_proxy); |
- __ push(ebx); // Smi |
- __ push(eax); // Array |
- __ mov(eax, FieldOperand(eax, FixedArray::kLengthOffset)); |
- __ push(eax); // Fixed array length (as smi). |
- __ push(Immediate(Smi::FromInt(0))); // Initial index. |
- |
- // Generate code for doing the condition check. |
- PrepareForBailoutForId(stmt->BodyId(), NO_REGISTERS); |
- __ bind(&loop); |
- SetExpressionAsStatementPosition(stmt->each()); |
- |
- __ mov(eax, Operand(esp, 0 * kPointerSize)); // Get the current index. |
- __ cmp(eax, Operand(esp, 1 * kPointerSize)); // Compare to the array length. |
- __ j(above_equal, loop_statement.break_label()); |
- |
- // Get the current entry of the array into register ebx. |
- __ mov(ebx, Operand(esp, 2 * kPointerSize)); |
- __ mov(ebx, FieldOperand(ebx, eax, times_2, FixedArray::kHeaderSize)); |
- |
- // Get the expected map from the stack or a smi in the |
- // permanent slow case into register edx. |
- __ mov(edx, Operand(esp, 3 * kPointerSize)); |
- |
- // Check if the expected map still matches that of the enumerable. |
- // If not, we may have to filter the key. |
- Label update_each; |
- __ mov(ecx, Operand(esp, 4 * kPointerSize)); |
- __ cmp(edx, FieldOperand(ecx, HeapObject::kMapOffset)); |
- __ j(equal, &update_each, Label::kNear); |
- |
- // For proxies, no filtering is done. |
- // TODO(rossberg): What if only a prototype is a proxy? Not specified yet. |
- DCHECK(Smi::FromInt(0) == 0); |
- __ test(edx, edx); |
- __ j(zero, &update_each); |
- |
- // Convert the entry to a string or null if it isn't a property |
- // anymore. If the property has been removed while iterating, we |
- // just skip it. |
- __ push(ecx); // Enumerable. |
- __ push(ebx); // Current entry. |
- __ CallRuntime(Runtime::kForInFilter, 2); |
- PrepareForBailoutForId(stmt->FilterId(), TOS_REG); |
- __ cmp(eax, isolate()->factory()->undefined_value()); |
- __ j(equal, loop_statement.continue_label()); |
- __ mov(ebx, eax); |
- |
- // Update the 'each' property or variable from the possibly filtered |
- // entry in register ebx. |
- __ bind(&update_each); |
- __ mov(result_register(), ebx); |
- // Perform the assignment as if via '='. |
- { EffectContext context(this); |
- EmitAssignment(stmt->each(), stmt->EachFeedbackSlot()); |
- PrepareForBailoutForId(stmt->AssignmentId(), NO_REGISTERS); |
- } |
- |
- // Generate code for the body of the loop. |
- Visit(stmt->body()); |
- |
- // Generate code for going to the next element by incrementing the |
- // index (smi) stored on top of the stack. |
- __ bind(loop_statement.continue_label()); |
- __ add(Operand(esp, 0 * kPointerSize), Immediate(Smi::FromInt(1))); |
- |
- EmitBackEdgeBookkeeping(stmt, &loop); |
- __ jmp(&loop); |
- |
- // Remove the pointers stored on the stack. |
- __ bind(loop_statement.break_label()); |
- __ add(esp, Immediate(5 * kPointerSize)); |
- |
- // Exit and decrement the loop depth. |
- PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS); |
- __ bind(&exit); |
- decrement_loop_depth(); |
-} |
- |
- |
-void FullCodeGenerator::EmitNewClosure(Handle<SharedFunctionInfo> info, |
- bool pretenure) { |
- // Use the fast case closure allocation code that allocates in new |
- // space for nested functions that don't need literals cloning. If |
- // we're running with the --always-opt or the --prepare-always-opt |
- // flag, we need to use the runtime function so that the new function |
- // we are creating here gets a chance to have its code optimized and |
- // doesn't just get a copy of the existing unoptimized code. |
- if (!FLAG_always_opt && |
- !FLAG_prepare_always_opt && |
- !pretenure && |
- scope()->is_function_scope() && |
- info->num_literals() == 0) { |
- FastNewClosureStub stub(isolate(), info->language_mode(), info->kind()); |
- __ mov(ebx, Immediate(info)); |
- __ CallStub(&stub); |
- } else { |
- __ push(esi); |
- __ push(Immediate(info)); |
- __ push(Immediate(pretenure |
- ? isolate()->factory()->true_value() |
- : isolate()->factory()->false_value())); |
- __ CallRuntime(Runtime::kNewClosure, 3); |
- } |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitSetHomeObjectIfNeeded(Expression* initializer, |
- int offset, |
- FeedbackVectorICSlot slot) { |
- if (NeedsHomeObject(initializer)) { |
- __ mov(StoreDescriptor::ReceiverRegister(), Operand(esp, 0)); |
- __ mov(StoreDescriptor::NameRegister(), |
- Immediate(isolate()->factory()->home_object_symbol())); |
- __ mov(StoreDescriptor::ValueRegister(), |
- Operand(esp, offset * kPointerSize)); |
- if (FLAG_vector_stores) EmitLoadStoreICSlot(slot); |
- CallStoreIC(); |
- } |
-} |
- |
- |
-void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy, |
- TypeofMode typeof_mode, |
- Label* slow) { |
- Register context = esi; |
- Register temp = edx; |
- |
- Scope* s = scope(); |
- while (s != NULL) { |
- if (s->num_heap_slots() > 0) { |
- if (s->calls_sloppy_eval()) { |
- // Check that extension is NULL. |
- __ cmp(ContextOperand(context, Context::EXTENSION_INDEX), |
- Immediate(0)); |
- __ j(not_equal, slow); |
- } |
- // Load next context in chain. |
- __ mov(temp, ContextOperand(context, Context::PREVIOUS_INDEX)); |
- // Walk the rest of the chain without clobbering esi. |
- context = temp; |
- } |
- // If no outer scope calls eval, we do not need to check more |
- // context extensions. If we have reached an eval scope, we check |
- // all extensions from this point. |
- if (!s->outer_scope_calls_sloppy_eval() || s->is_eval_scope()) break; |
- s = s->outer_scope(); |
- } |
- |
- if (s != NULL && s->is_eval_scope()) { |
- // Loop up the context chain. There is no frame effect so it is |
- // safe to use raw labels here. |
- Label next, fast; |
- if (!context.is(temp)) { |
- __ mov(temp, context); |
- } |
- __ bind(&next); |
- // Terminate at native context. |
- __ cmp(FieldOperand(temp, HeapObject::kMapOffset), |
- Immediate(isolate()->factory()->native_context_map())); |
- __ j(equal, &fast, Label::kNear); |
- // Check that extension is NULL. |
- __ cmp(ContextOperand(temp, Context::EXTENSION_INDEX), Immediate(0)); |
- __ j(not_equal, slow); |
- // Load next context in chain. |
- __ mov(temp, ContextOperand(temp, Context::PREVIOUS_INDEX)); |
- __ jmp(&next); |
- __ bind(&fast); |
- } |
- |
- // All extension objects were empty and it is safe to use a normal global |
- // load machinery. |
- EmitGlobalVariableLoad(proxy, typeof_mode); |
-} |
- |
- |
-MemOperand FullCodeGenerator::ContextSlotOperandCheckExtensions(Variable* var, |
- Label* slow) { |
- DCHECK(var->IsContextSlot()); |
- Register context = esi; |
- Register temp = ebx; |
- |
- for (Scope* s = scope(); s != var->scope(); s = s->outer_scope()) { |
- if (s->num_heap_slots() > 0) { |
- if (s->calls_sloppy_eval()) { |
- // Check that extension is NULL. |
- __ cmp(ContextOperand(context, Context::EXTENSION_INDEX), |
- Immediate(0)); |
- __ j(not_equal, slow); |
- } |
- __ mov(temp, ContextOperand(context, Context::PREVIOUS_INDEX)); |
- // Walk the rest of the chain without clobbering esi. |
- context = temp; |
- } |
- } |
- // Check that last extension is NULL. |
- __ cmp(ContextOperand(context, Context::EXTENSION_INDEX), Immediate(0)); |
- __ j(not_equal, slow); |
- |
- // This function is used only for loads, not stores, so it's safe to |
- // return an esi-based operand (the write barrier cannot be allowed to |
- // destroy the esi register). |
- return ContextOperand(context, var->index()); |
-} |
- |
- |
-void FullCodeGenerator::EmitDynamicLookupFastCase(VariableProxy* proxy, |
- TypeofMode typeof_mode, |
- Label* slow, Label* done) { |
- // Generate fast-case code for variables that might be shadowed by |
- // eval-introduced variables. Eval is used a lot without |
- // introducing variables. In those cases, we do not want to |
- // perform a runtime call for all variables in the scope |
- // containing the eval. |
- Variable* var = proxy->var(); |
- if (var->mode() == DYNAMIC_GLOBAL) { |
- EmitLoadGlobalCheckExtensions(proxy, typeof_mode, slow); |
- __ jmp(done); |
- } else if (var->mode() == DYNAMIC_LOCAL) { |
- Variable* local = var->local_if_not_shadowed(); |
- __ mov(eax, ContextSlotOperandCheckExtensions(local, slow)); |
- if (local->mode() == LET || local->mode() == CONST || |
- local->mode() == CONST_LEGACY) { |
- __ cmp(eax, isolate()->factory()->the_hole_value()); |
- __ j(not_equal, done); |
- if (local->mode() == CONST_LEGACY) { |
- __ mov(eax, isolate()->factory()->undefined_value()); |
- } else { // LET || CONST |
- __ push(Immediate(var->name())); |
- __ CallRuntime(Runtime::kThrowReferenceError, 1); |
- } |
- } |
- __ jmp(done); |
- } |
-} |
- |
- |
-void FullCodeGenerator::EmitGlobalVariableLoad(VariableProxy* proxy, |
- TypeofMode typeof_mode) { |
- Variable* var = proxy->var(); |
- DCHECK(var->IsUnallocatedOrGlobalSlot() || |
- (var->IsLookupSlot() && var->mode() == DYNAMIC_GLOBAL)); |
- if (var->IsGlobalSlot()) { |
- DCHECK(var->index() > 0); |
- DCHECK(var->IsStaticGlobalObjectProperty()); |
- // Each var occupies two slots in the context: for reads and writes. |
- int slot_index = var->index(); |
- int depth = scope()->ContextChainLength(var->scope()); |
- __ mov(LoadGlobalViaContextDescriptor::DepthRegister(), |
- Immediate(Smi::FromInt(depth))); |
- __ mov(LoadGlobalViaContextDescriptor::SlotRegister(), |
- Immediate(Smi::FromInt(slot_index))); |
- __ mov(LoadGlobalViaContextDescriptor::NameRegister(), var->name()); |
- LoadGlobalViaContextStub stub(isolate(), depth); |
- __ CallStub(&stub); |
- |
- } else { |
- __ mov(LoadDescriptor::ReceiverRegister(), GlobalObjectOperand()); |
- __ mov(LoadDescriptor::NameRegister(), var->name()); |
- __ mov(LoadDescriptor::SlotRegister(), |
- Immediate(SmiFromSlot(proxy->VariableFeedbackSlot()))); |
- CallLoadIC(typeof_mode); |
- } |
-} |
- |
- |
-void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy, |
- TypeofMode typeof_mode) { |
- SetExpressionPosition(proxy); |
- PrepareForBailoutForId(proxy->BeforeId(), NO_REGISTERS); |
- Variable* var = proxy->var(); |
- |
- // Three cases: global variables, lookup variables, and all other types of |
- // variables. |
- switch (var->location()) { |
- case VariableLocation::GLOBAL: |
- case VariableLocation::UNALLOCATED: { |
- Comment cmnt(masm_, "[ Global variable"); |
- EmitGlobalVariableLoad(proxy, typeof_mode); |
- context()->Plug(eax); |
- break; |
- } |
- |
- case VariableLocation::PARAMETER: |
- case VariableLocation::LOCAL: |
- case VariableLocation::CONTEXT: { |
- DCHECK_EQ(NOT_INSIDE_TYPEOF, typeof_mode); |
- Comment cmnt(masm_, var->IsContextSlot() ? "[ Context variable" |
- : "[ Stack variable"); |
- if (var->binding_needs_init()) { |
- // var->scope() may be NULL when the proxy is located in eval code and |
- // refers to a potential outside binding. Currently those bindings are |
- // always looked up dynamically, i.e. in that case |
- // var->location() == LOOKUP. |
- // always holds. |
- DCHECK(var->scope() != NULL); |
- |
- // Check if the binding really needs an initialization check. The check |
- // can be skipped in the following situation: we have a LET or CONST |
- // binding in harmony mode, both the Variable and the VariableProxy have |
- // the same declaration scope (i.e. they are both in global code, in the |
- // same function or in the same eval code) and the VariableProxy is in |
- // the source physically located after the initializer of the variable. |
- // |
- // We cannot skip any initialization checks for CONST in non-harmony |
- // mode because const variables may be declared but never initialized: |
- // if (false) { const x; }; var y = x; |
- // |
- // The condition on the declaration scopes is a conservative check for |
- // nested functions that access a binding and are called before the |
- // binding is initialized: |
- // function() { f(); let x = 1; function f() { x = 2; } } |
- // |
- bool skip_init_check; |
- if (var->scope()->DeclarationScope() != scope()->DeclarationScope()) { |
- skip_init_check = false; |
- } else if (var->is_this()) { |
- CHECK(info_->function() != nullptr && |
- (info_->function()->kind() & kSubclassConstructor) != 0); |
- // TODO(dslomov): implement 'this' hole check elimination. |
- skip_init_check = false; |
- } else { |
- // Check that we always have valid source position. |
- DCHECK(var->initializer_position() != RelocInfo::kNoPosition); |
- DCHECK(proxy->position() != RelocInfo::kNoPosition); |
- skip_init_check = var->mode() != CONST_LEGACY && |
- var->initializer_position() < proxy->position(); |
- } |
- |
- if (!skip_init_check) { |
- // Let and const need a read barrier. |
- Label done; |
- GetVar(eax, var); |
- __ cmp(eax, isolate()->factory()->the_hole_value()); |
- __ j(not_equal, &done, Label::kNear); |
- if (var->mode() == LET || var->mode() == CONST) { |
- // Throw a reference error when using an uninitialized let/const |
- // binding in harmony mode. |
- __ push(Immediate(var->name())); |
- __ CallRuntime(Runtime::kThrowReferenceError, 1); |
- } else { |
- // Uninitalized const bindings outside of harmony mode are unholed. |
- DCHECK(var->mode() == CONST_LEGACY); |
- __ mov(eax, isolate()->factory()->undefined_value()); |
- } |
- __ bind(&done); |
- context()->Plug(eax); |
- break; |
- } |
- } |
- context()->Plug(var); |
- break; |
- } |
- |
- case VariableLocation::LOOKUP: { |
- Comment cmnt(masm_, "[ Lookup variable"); |
- Label done, slow; |
- // Generate code for loading from variables potentially shadowed |
- // by eval-introduced variables. |
- EmitDynamicLookupFastCase(proxy, typeof_mode, &slow, &done); |
- __ bind(&slow); |
- __ push(esi); // Context. |
- __ push(Immediate(var->name())); |
- Runtime::FunctionId function_id = |
- typeof_mode == NOT_INSIDE_TYPEOF |
- ? Runtime::kLoadLookupSlot |
- : Runtime::kLoadLookupSlotNoReferenceError; |
- __ CallRuntime(function_id, 2); |
- __ bind(&done); |
- context()->Plug(eax); |
- break; |
- } |
- } |
-} |
- |
- |
-void FullCodeGenerator::VisitRegExpLiteral(RegExpLiteral* expr) { |
- Comment cmnt(masm_, "[ RegExpLiteral"); |
- Label materialized; |
- // Registers will be used as follows: |
- // edi = JS function. |
- // ecx = literals array. |
- // ebx = regexp literal. |
- // eax = regexp literal clone. |
- __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
- __ mov(ecx, FieldOperand(edi, JSFunction::kLiteralsOffset)); |
- int literal_offset = |
- FixedArray::kHeaderSize + expr->literal_index() * kPointerSize; |
- __ mov(ebx, FieldOperand(ecx, literal_offset)); |
- __ cmp(ebx, isolate()->factory()->undefined_value()); |
- __ j(not_equal, &materialized, Label::kNear); |
- |
- // Create regexp literal using runtime function |
- // Result will be in eax. |
- __ push(ecx); |
- __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
- __ push(Immediate(expr->pattern())); |
- __ push(Immediate(expr->flags())); |
- __ CallRuntime(Runtime::kMaterializeRegExpLiteral, 4); |
- __ mov(ebx, eax); |
- |
- __ bind(&materialized); |
- int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize; |
- Label allocated, runtime_allocate; |
- __ Allocate(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT); |
- __ jmp(&allocated); |
- |
- __ bind(&runtime_allocate); |
- __ push(ebx); |
- __ push(Immediate(Smi::FromInt(size))); |
- __ CallRuntime(Runtime::kAllocateInNewSpace, 1); |
- __ pop(ebx); |
- |
- __ bind(&allocated); |
- // Copy the content into the newly allocated memory. |
- // (Unroll copy loop once for better throughput). |
- for (int i = 0; i < size - kPointerSize; i += 2 * kPointerSize) { |
- __ mov(edx, FieldOperand(ebx, i)); |
- __ mov(ecx, FieldOperand(ebx, i + kPointerSize)); |
- __ mov(FieldOperand(eax, i), edx); |
- __ mov(FieldOperand(eax, i + kPointerSize), ecx); |
- } |
- if ((size % (2 * kPointerSize)) != 0) { |
- __ mov(edx, FieldOperand(ebx, size - kPointerSize)); |
- __ mov(FieldOperand(eax, size - kPointerSize), edx); |
- } |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitAccessor(Expression* expression) { |
- if (expression == NULL) { |
- __ push(Immediate(isolate()->factory()->null_value())); |
- } else { |
- VisitForStackValue(expression); |
- } |
-} |
- |
- |
-void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) { |
- Comment cmnt(masm_, "[ ObjectLiteral"); |
- |
- Handle<FixedArray> constant_properties = expr->constant_properties(); |
- int flags = expr->ComputeFlags(); |
- // If any of the keys would store to the elements array, then we shouldn't |
- // allow it. |
- if (MustCreateObjectLiteralWithRuntime(expr)) { |
- __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
- __ push(FieldOperand(edi, JSFunction::kLiteralsOffset)); |
- __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
- __ push(Immediate(constant_properties)); |
- __ push(Immediate(Smi::FromInt(flags))); |
- __ CallRuntime(Runtime::kCreateObjectLiteral, 4); |
- } else { |
- __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
- __ mov(eax, FieldOperand(edi, JSFunction::kLiteralsOffset)); |
- __ mov(ebx, Immediate(Smi::FromInt(expr->literal_index()))); |
- __ mov(ecx, Immediate(constant_properties)); |
- __ mov(edx, Immediate(Smi::FromInt(flags))); |
- FastCloneShallowObjectStub stub(isolate(), expr->properties_count()); |
- __ CallStub(&stub); |
- } |
- PrepareForBailoutForId(expr->CreateLiteralId(), TOS_REG); |
- |
- // If result_saved is true the result is on top of the stack. If |
- // result_saved is false the result is in eax. |
- bool result_saved = false; |
- |
- AccessorTable accessor_table(zone()); |
- int property_index = 0; |
- // store_slot_index points to the vector IC slot for the next store IC used. |
- // ObjectLiteral::ComputeFeedbackRequirements controls the allocation of slots |
- // and must be updated if the number of store ICs emitted here changes. |
- int store_slot_index = 0; |
- for (; property_index < expr->properties()->length(); property_index++) { |
- ObjectLiteral::Property* property = expr->properties()->at(property_index); |
- if (property->is_computed_name()) break; |
- if (property->IsCompileTimeValue()) continue; |
- |
- Literal* key = property->key()->AsLiteral(); |
- Expression* value = property->value(); |
- if (!result_saved) { |
- __ push(eax); // Save result on the stack |
- result_saved = true; |
- } |
- switch (property->kind()) { |
- case ObjectLiteral::Property::CONSTANT: |
- UNREACHABLE(); |
- case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
- DCHECK(!CompileTimeValue::IsCompileTimeValue(value)); |
- // Fall through. |
- case ObjectLiteral::Property::COMPUTED: |
- // It is safe to use [[Put]] here because the boilerplate already |
- // contains computed properties with an uninitialized value. |
- if (key->value()->IsInternalizedString()) { |
- if (property->emit_store()) { |
- VisitForAccumulatorValue(value); |
- DCHECK(StoreDescriptor::ValueRegister().is(eax)); |
- __ mov(StoreDescriptor::NameRegister(), Immediate(key->value())); |
- __ mov(StoreDescriptor::ReceiverRegister(), Operand(esp, 0)); |
- if (FLAG_vector_stores) { |
- EmitLoadStoreICSlot(expr->GetNthSlot(store_slot_index++)); |
- CallStoreIC(); |
- } else { |
- CallStoreIC(key->LiteralFeedbackId()); |
- } |
- PrepareForBailoutForId(key->id(), NO_REGISTERS); |
- |
- if (NeedsHomeObject(value)) { |
- __ mov(StoreDescriptor::ReceiverRegister(), eax); |
- __ mov(StoreDescriptor::NameRegister(), |
- Immediate(isolate()->factory()->home_object_symbol())); |
- __ mov(StoreDescriptor::ValueRegister(), Operand(esp, 0)); |
- if (FLAG_vector_stores) { |
- EmitLoadStoreICSlot(expr->GetNthSlot(store_slot_index++)); |
- } |
- CallStoreIC(); |
- } |
- } else { |
- VisitForEffect(value); |
- } |
- break; |
- } |
- __ push(Operand(esp, 0)); // Duplicate receiver. |
- VisitForStackValue(key); |
- VisitForStackValue(value); |
- if (property->emit_store()) { |
- EmitSetHomeObjectIfNeeded( |
- value, 2, expr->SlotForHomeObject(value, &store_slot_index)); |
- __ push(Immediate(Smi::FromInt(SLOPPY))); // Language mode |
- __ CallRuntime(Runtime::kSetProperty, 4); |
- } else { |
- __ Drop(3); |
- } |
- break; |
- case ObjectLiteral::Property::PROTOTYPE: |
- __ push(Operand(esp, 0)); // Duplicate receiver. |
- VisitForStackValue(value); |
- DCHECK(property->emit_store()); |
- __ CallRuntime(Runtime::kInternalSetPrototype, 2); |
- break; |
- case ObjectLiteral::Property::GETTER: |
- if (property->emit_store()) { |
- accessor_table.lookup(key)->second->getter = value; |
- } |
- break; |
- case ObjectLiteral::Property::SETTER: |
- if (property->emit_store()) { |
- accessor_table.lookup(key)->second->setter = value; |
- } |
- break; |
- } |
- } |
- |
- // Emit code to define accessors, using only a single call to the runtime for |
- // each pair of corresponding getters and setters. |
- for (AccessorTable::Iterator it = accessor_table.begin(); |
- it != accessor_table.end(); |
- ++it) { |
- __ push(Operand(esp, 0)); // Duplicate receiver. |
- VisitForStackValue(it->first); |
- EmitAccessor(it->second->getter); |
- EmitSetHomeObjectIfNeeded( |
- it->second->getter, 2, |
- expr->SlotForHomeObject(it->second->getter, &store_slot_index)); |
- |
- EmitAccessor(it->second->setter); |
- EmitSetHomeObjectIfNeeded( |
- it->second->setter, 3, |
- expr->SlotForHomeObject(it->second->setter, &store_slot_index)); |
- |
- __ push(Immediate(Smi::FromInt(NONE))); |
- __ CallRuntime(Runtime::kDefineAccessorPropertyUnchecked, 5); |
- } |
- |
- // Object literals have two parts. The "static" part on the left contains no |
- // computed property names, and so we can compute its map ahead of time; see |
- // runtime.cc::CreateObjectLiteralBoilerplate. The second "dynamic" part |
- // starts with the first computed property name, and continues with all |
- // properties to its right. All the code from above initializes the static |
- // component of the object literal, and arranges for the map of the result to |
- // reflect the static order in which the keys appear. For the dynamic |
- // properties, we compile them into a series of "SetOwnProperty" runtime |
- // calls. This will preserve insertion order. |
- for (; property_index < expr->properties()->length(); property_index++) { |
- ObjectLiteral::Property* property = expr->properties()->at(property_index); |
- |
- Expression* value = property->value(); |
- if (!result_saved) { |
- __ push(eax); // Save result on the stack |
- result_saved = true; |
- } |
- |
- __ push(Operand(esp, 0)); // Duplicate receiver. |
- |
- if (property->kind() == ObjectLiteral::Property::PROTOTYPE) { |
- DCHECK(!property->is_computed_name()); |
- VisitForStackValue(value); |
- DCHECK(property->emit_store()); |
- __ CallRuntime(Runtime::kInternalSetPrototype, 2); |
- } else { |
- EmitPropertyKey(property, expr->GetIdForProperty(property_index)); |
- VisitForStackValue(value); |
- EmitSetHomeObjectIfNeeded( |
- value, 2, expr->SlotForHomeObject(value, &store_slot_index)); |
- |
- switch (property->kind()) { |
- case ObjectLiteral::Property::CONSTANT: |
- case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
- case ObjectLiteral::Property::COMPUTED: |
- if (property->emit_store()) { |
- __ push(Immediate(Smi::FromInt(NONE))); |
- __ CallRuntime(Runtime::kDefineDataPropertyUnchecked, 4); |
- } else { |
- __ Drop(3); |
- } |
- break; |
- |
- case ObjectLiteral::Property::PROTOTYPE: |
- UNREACHABLE(); |
- break; |
- |
- case ObjectLiteral::Property::GETTER: |
- __ push(Immediate(Smi::FromInt(NONE))); |
- __ CallRuntime(Runtime::kDefineGetterPropertyUnchecked, 4); |
- break; |
- |
- case ObjectLiteral::Property::SETTER: |
- __ push(Immediate(Smi::FromInt(NONE))); |
- __ CallRuntime(Runtime::kDefineSetterPropertyUnchecked, 4); |
- break; |
- } |
- } |
- } |
- |
- if (expr->has_function()) { |
- DCHECK(result_saved); |
- __ push(Operand(esp, 0)); |
- __ CallRuntime(Runtime::kToFastProperties, 1); |
- } |
- |
- if (result_saved) { |
- context()->PlugTOS(); |
- } else { |
- context()->Plug(eax); |
- } |
- |
- // Verify that compilation exactly consumed the number of store ic slots that |
- // the ObjectLiteral node had to offer. |
- DCHECK(!FLAG_vector_stores || store_slot_index == expr->slot_count()); |
-} |
- |
- |
-void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) { |
- Comment cmnt(masm_, "[ ArrayLiteral"); |
- |
- expr->BuildConstantElements(isolate()); |
- Handle<FixedArray> constant_elements = expr->constant_elements(); |
- bool has_constant_fast_elements = |
- IsFastObjectElementsKind(expr->constant_elements_kind()); |
- |
- AllocationSiteMode allocation_site_mode = TRACK_ALLOCATION_SITE; |
- if (has_constant_fast_elements && !FLAG_allocation_site_pretenuring) { |
- // If the only customer of allocation sites is transitioning, then |
- // we can turn it off if we don't have anywhere else to transition to. |
- allocation_site_mode = DONT_TRACK_ALLOCATION_SITE; |
- } |
- |
- if (MustCreateArrayLiteralWithRuntime(expr)) { |
- __ mov(ebx, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
- __ push(FieldOperand(ebx, JSFunction::kLiteralsOffset)); |
- __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
- __ push(Immediate(constant_elements)); |
- __ push(Immediate(Smi::FromInt(expr->ComputeFlags()))); |
- __ CallRuntime(Runtime::kCreateArrayLiteral, 4); |
- } else { |
- __ mov(ebx, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
- __ mov(eax, FieldOperand(ebx, JSFunction::kLiteralsOffset)); |
- __ mov(ebx, Immediate(Smi::FromInt(expr->literal_index()))); |
- __ mov(ecx, Immediate(constant_elements)); |
- FastCloneShallowArrayStub stub(isolate(), allocation_site_mode); |
- __ CallStub(&stub); |
- } |
- PrepareForBailoutForId(expr->CreateLiteralId(), TOS_REG); |
- |
- bool result_saved = false; // Is the result saved to the stack? |
- ZoneList<Expression*>* subexprs = expr->values(); |
- int length = subexprs->length(); |
- |
- // Emit code to evaluate all the non-constant subexpressions and to store |
- // them into the newly cloned array. |
- int array_index = 0; |
- for (; array_index < length; array_index++) { |
- Expression* subexpr = subexprs->at(array_index); |
- if (subexpr->IsSpread()) break; |
- |
- // If the subexpression is a literal or a simple materialized literal it |
- // is already set in the cloned array. |
- if (CompileTimeValue::IsCompileTimeValue(subexpr)) continue; |
- |
- if (!result_saved) { |
- __ push(eax); // array literal. |
- __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
- result_saved = true; |
- } |
- VisitForAccumulatorValue(subexpr); |
- |
- if (has_constant_fast_elements) { |
- // Fast-case array literal with ElementsKind of FAST_*_ELEMENTS, they |
- // cannot transition and don't need to call the runtime stub. |
- int offset = FixedArray::kHeaderSize + (array_index * kPointerSize); |
- __ mov(ebx, Operand(esp, kPointerSize)); // Copy of array literal. |
- __ mov(ebx, FieldOperand(ebx, JSObject::kElementsOffset)); |
- // Store the subexpression value in the array's elements. |
- __ mov(FieldOperand(ebx, offset), result_register()); |
- // Update the write barrier for the array store. |
- __ RecordWriteField(ebx, offset, result_register(), ecx, |
- kDontSaveFPRegs, |
- EMIT_REMEMBERED_SET, |
- INLINE_SMI_CHECK); |
- } else { |
- // Store the subexpression value in the array's elements. |
- __ mov(ecx, Immediate(Smi::FromInt(array_index))); |
- StoreArrayLiteralElementStub stub(isolate()); |
- __ CallStub(&stub); |
- } |
- |
- PrepareForBailoutForId(expr->GetIdForElement(array_index), NO_REGISTERS); |
- } |
- |
- // In case the array literal contains spread expressions it has two parts. The |
- // first part is the "static" array which has a literal index is handled |
- // above. The second part is the part after the first spread expression |
- // (inclusive) and these elements gets appended to the array. Note that the |
- // number elements an iterable produces is unknown ahead of time. |
- if (array_index < length && result_saved) { |
- __ Drop(1); // literal index |
- __ Pop(eax); |
- result_saved = false; |
- } |
- for (; array_index < length; array_index++) { |
- Expression* subexpr = subexprs->at(array_index); |
- |
- __ Push(eax); |
- if (subexpr->IsSpread()) { |
- VisitForStackValue(subexpr->AsSpread()->expression()); |
- __ InvokeBuiltin(Builtins::CONCAT_ITERABLE_TO_ARRAY, CALL_FUNCTION); |
- } else { |
- VisitForStackValue(subexpr); |
- __ CallRuntime(Runtime::kAppendElement, 2); |
- } |
- |
- PrepareForBailoutForId(expr->GetIdForElement(array_index), NO_REGISTERS); |
- } |
- |
- if (result_saved) { |
- __ Drop(1); // literal index |
- context()->PlugTOS(); |
- } else { |
- context()->Plug(eax); |
- } |
-} |
- |
- |
-void FullCodeGenerator::VisitAssignment(Assignment* expr) { |
- DCHECK(expr->target()->IsValidReferenceExpressionOrThis()); |
- |
- Comment cmnt(masm_, "[ Assignment"); |
- SetExpressionPosition(expr, INSERT_BREAK); |
- |
- Property* property = expr->target()->AsProperty(); |
- LhsKind assign_type = Property::GetAssignType(property); |
- |
- // Evaluate LHS expression. |
- switch (assign_type) { |
- case VARIABLE: |
- // Nothing to do here. |
- break; |
- case NAMED_SUPER_PROPERTY: |
- VisitForStackValue( |
- property->obj()->AsSuperPropertyReference()->this_var()); |
- VisitForAccumulatorValue( |
- property->obj()->AsSuperPropertyReference()->home_object()); |
- __ push(result_register()); |
- if (expr->is_compound()) { |
- __ push(MemOperand(esp, kPointerSize)); |
- __ push(result_register()); |
- } |
- break; |
- case NAMED_PROPERTY: |
- if (expr->is_compound()) { |
- // We need the receiver both on the stack and in the register. |
- VisitForStackValue(property->obj()); |
- __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, 0)); |
- } else { |
- VisitForStackValue(property->obj()); |
- } |
- break; |
- case KEYED_SUPER_PROPERTY: |
- VisitForStackValue( |
- property->obj()->AsSuperPropertyReference()->this_var()); |
- VisitForStackValue( |
- property->obj()->AsSuperPropertyReference()->home_object()); |
- VisitForAccumulatorValue(property->key()); |
- __ Push(result_register()); |
- if (expr->is_compound()) { |
- __ push(MemOperand(esp, 2 * kPointerSize)); |
- __ push(MemOperand(esp, 2 * kPointerSize)); |
- __ push(result_register()); |
- } |
- break; |
- case KEYED_PROPERTY: { |
- if (expr->is_compound()) { |
- VisitForStackValue(property->obj()); |
- VisitForStackValue(property->key()); |
- __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, kPointerSize)); |
- __ mov(LoadDescriptor::NameRegister(), Operand(esp, 0)); |
- } else { |
- VisitForStackValue(property->obj()); |
- VisitForStackValue(property->key()); |
- } |
- break; |
- } |
- } |
- |
- // For compound assignments we need another deoptimization point after the |
- // variable/property load. |
- if (expr->is_compound()) { |
- AccumulatorValueContext result_context(this); |
- { AccumulatorValueContext left_operand_context(this); |
- switch (assign_type) { |
- case VARIABLE: |
- EmitVariableLoad(expr->target()->AsVariableProxy()); |
- PrepareForBailout(expr->target(), TOS_REG); |
- break; |
- case NAMED_SUPER_PROPERTY: |
- EmitNamedSuperPropertyLoad(property); |
- PrepareForBailoutForId(property->LoadId(), TOS_REG); |
- break; |
- case NAMED_PROPERTY: |
- EmitNamedPropertyLoad(property); |
- PrepareForBailoutForId(property->LoadId(), TOS_REG); |
- break; |
- case KEYED_SUPER_PROPERTY: |
- EmitKeyedSuperPropertyLoad(property); |
- PrepareForBailoutForId(property->LoadId(), TOS_REG); |
- break; |
- case KEYED_PROPERTY: |
- EmitKeyedPropertyLoad(property); |
- PrepareForBailoutForId(property->LoadId(), TOS_REG); |
- break; |
- } |
- } |
- |
- Token::Value op = expr->binary_op(); |
- __ push(eax); // Left operand goes on the stack. |
- VisitForAccumulatorValue(expr->value()); |
- |
- if (ShouldInlineSmiCase(op)) { |
- EmitInlineSmiBinaryOp(expr->binary_operation(), |
- op, |
- expr->target(), |
- expr->value()); |
- } else { |
- EmitBinaryOp(expr->binary_operation(), op); |
- } |
- |
- // Deoptimization point in case the binary operation may have side effects. |
- PrepareForBailout(expr->binary_operation(), TOS_REG); |
- } else { |
- VisitForAccumulatorValue(expr->value()); |
- } |
- |
- SetExpressionPosition(expr); |
- |
- // Store the value. |
- switch (assign_type) { |
- case VARIABLE: |
- EmitVariableAssignment(expr->target()->AsVariableProxy()->var(), |
- expr->op(), expr->AssignmentSlot()); |
- PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
- context()->Plug(eax); |
- break; |
- case NAMED_PROPERTY: |
- EmitNamedPropertyAssignment(expr); |
- break; |
- case NAMED_SUPER_PROPERTY: |
- EmitNamedSuperPropertyStore(property); |
- context()->Plug(result_register()); |
- break; |
- case KEYED_SUPER_PROPERTY: |
- EmitKeyedSuperPropertyStore(property); |
- context()->Plug(result_register()); |
- break; |
- case KEYED_PROPERTY: |
- EmitKeyedPropertyAssignment(expr); |
- break; |
- } |
-} |
- |
- |
-void FullCodeGenerator::VisitYield(Yield* expr) { |
- Comment cmnt(masm_, "[ Yield"); |
- SetExpressionPosition(expr); |
- |
- // Evaluate yielded value first; the initial iterator definition depends on |
- // this. It stays on the stack while we update the iterator. |
- VisitForStackValue(expr->expression()); |
- |
- switch (expr->yield_kind()) { |
- case Yield::kSuspend: |
- // Pop value from top-of-stack slot; box result into result register. |
- EmitCreateIteratorResult(false); |
- __ push(result_register()); |
- // Fall through. |
- case Yield::kInitial: { |
- Label suspend, continuation, post_runtime, resume; |
- |
- __ jmp(&suspend); |
- __ bind(&continuation); |
- __ RecordGeneratorContinuation(); |
- __ jmp(&resume); |
- |
- __ bind(&suspend); |
- VisitForAccumulatorValue(expr->generator_object()); |
- DCHECK(continuation.pos() > 0 && Smi::IsValid(continuation.pos())); |
- __ mov(FieldOperand(eax, JSGeneratorObject::kContinuationOffset), |
- Immediate(Smi::FromInt(continuation.pos()))); |
- __ mov(FieldOperand(eax, JSGeneratorObject::kContextOffset), esi); |
- __ mov(ecx, esi); |
- __ RecordWriteField(eax, JSGeneratorObject::kContextOffset, ecx, edx, |
- kDontSaveFPRegs); |
- __ lea(ebx, Operand(ebp, StandardFrameConstants::kExpressionsOffset)); |
- __ cmp(esp, ebx); |
- __ j(equal, &post_runtime); |
- __ push(eax); // generator object |
- __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 1); |
- __ mov(context_register(), |
- Operand(ebp, StandardFrameConstants::kContextOffset)); |
- __ bind(&post_runtime); |
- __ pop(result_register()); |
- EmitReturnSequence(); |
- |
- __ bind(&resume); |
- context()->Plug(result_register()); |
- break; |
- } |
- |
- case Yield::kFinal: { |
- VisitForAccumulatorValue(expr->generator_object()); |
- __ mov(FieldOperand(result_register(), |
- JSGeneratorObject::kContinuationOffset), |
- Immediate(Smi::FromInt(JSGeneratorObject::kGeneratorClosed))); |
- // Pop value from top-of-stack slot, box result into result register. |
- EmitCreateIteratorResult(true); |
- EmitUnwindBeforeReturn(); |
- EmitReturnSequence(); |
- break; |
- } |
- |
- case Yield::kDelegating: { |
- VisitForStackValue(expr->generator_object()); |
- |
- // Initial stack layout is as follows: |
- // [sp + 1 * kPointerSize] iter |
- // [sp + 0 * kPointerSize] g |
- |
- Label l_catch, l_try, l_suspend, l_continuation, l_resume; |
- Label l_next, l_call, l_loop; |
- Register load_receiver = LoadDescriptor::ReceiverRegister(); |
- Register load_name = LoadDescriptor::NameRegister(); |
- |
- // Initial send value is undefined. |
- __ mov(eax, isolate()->factory()->undefined_value()); |
- __ jmp(&l_next); |
- |
- // catch (e) { receiver = iter; f = 'throw'; arg = e; goto l_call; } |
- __ bind(&l_catch); |
- __ mov(load_name, isolate()->factory()->throw_string()); // "throw" |
- __ push(load_name); // "throw" |
- __ push(Operand(esp, 2 * kPointerSize)); // iter |
- __ push(eax); // exception |
- __ jmp(&l_call); |
- |
- // try { received = %yield result } |
- // Shuffle the received result above a try handler and yield it without |
- // re-boxing. |
- __ bind(&l_try); |
- __ pop(eax); // result |
- int handler_index = NewHandlerTableEntry(); |
- EnterTryBlock(handler_index, &l_catch); |
- const int try_block_size = TryCatch::kElementCount * kPointerSize; |
- __ push(eax); // result |
- |
- __ jmp(&l_suspend); |
- __ bind(&l_continuation); |
- __ RecordGeneratorContinuation(); |
- __ jmp(&l_resume); |
- |
- __ bind(&l_suspend); |
- const int generator_object_depth = kPointerSize + try_block_size; |
- __ mov(eax, Operand(esp, generator_object_depth)); |
- __ push(eax); // g |
- __ push(Immediate(Smi::FromInt(handler_index))); // handler-index |
- DCHECK(l_continuation.pos() > 0 && Smi::IsValid(l_continuation.pos())); |
- __ mov(FieldOperand(eax, JSGeneratorObject::kContinuationOffset), |
- Immediate(Smi::FromInt(l_continuation.pos()))); |
- __ mov(FieldOperand(eax, JSGeneratorObject::kContextOffset), esi); |
- __ mov(ecx, esi); |
- __ RecordWriteField(eax, JSGeneratorObject::kContextOffset, ecx, edx, |
- kDontSaveFPRegs); |
- __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 2); |
- __ mov(context_register(), |
- Operand(ebp, StandardFrameConstants::kContextOffset)); |
- __ pop(eax); // result |
- EmitReturnSequence(); |
- __ bind(&l_resume); // received in eax |
- ExitTryBlock(handler_index); |
- |
- // receiver = iter; f = iter.next; arg = received; |
- __ bind(&l_next); |
- |
- __ mov(load_name, isolate()->factory()->next_string()); |
- __ push(load_name); // "next" |
- __ push(Operand(esp, 2 * kPointerSize)); // iter |
- __ push(eax); // received |
- |
- // result = receiver[f](arg); |
- __ bind(&l_call); |
- __ mov(load_receiver, Operand(esp, kPointerSize)); |
- __ mov(LoadDescriptor::SlotRegister(), |
- Immediate(SmiFromSlot(expr->KeyedLoadFeedbackSlot()))); |
- Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate(), SLOPPY).code(); |
- CallIC(ic, TypeFeedbackId::None()); |
- __ mov(edi, eax); |
- __ mov(Operand(esp, 2 * kPointerSize), edi); |
- SetCallPosition(expr, 1); |
- CallFunctionStub stub(isolate(), 1, CALL_AS_METHOD); |
- __ CallStub(&stub); |
- |
- __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
- __ Drop(1); // The function is still on the stack; drop it. |
- |
- // if (!result.done) goto l_try; |
- __ bind(&l_loop); |
- __ push(eax); // save result |
- __ Move(load_receiver, eax); // result |
- __ mov(load_name, |
- isolate()->factory()->done_string()); // "done" |
- __ mov(LoadDescriptor::SlotRegister(), |
- Immediate(SmiFromSlot(expr->DoneFeedbackSlot()))); |
- CallLoadIC(NOT_INSIDE_TYPEOF); // result.done in eax |
- Handle<Code> bool_ic = ToBooleanStub::GetUninitialized(isolate()); |
- CallIC(bool_ic); |
- __ test(eax, eax); |
- __ j(zero, &l_try); |
- |
- // result.value |
- __ pop(load_receiver); // result |
- __ mov(load_name, |
- isolate()->factory()->value_string()); // "value" |
- __ mov(LoadDescriptor::SlotRegister(), |
- Immediate(SmiFromSlot(expr->ValueFeedbackSlot()))); |
- CallLoadIC(NOT_INSIDE_TYPEOF); // result.value in eax |
- context()->DropAndPlug(2, eax); // drop iter and g |
- break; |
- } |
- } |
-} |
- |
- |
-void FullCodeGenerator::EmitGeneratorResume(Expression *generator, |
- Expression *value, |
- JSGeneratorObject::ResumeMode resume_mode) { |
- // The value stays in eax, and is ultimately read by the resumed generator, as |
- // if CallRuntime(Runtime::kSuspendJSGeneratorObject) returned it. Or it |
- // is read to throw the value when the resumed generator is already closed. |
- // ebx will hold the generator object until the activation has been resumed. |
- VisitForStackValue(generator); |
- VisitForAccumulatorValue(value); |
- __ pop(ebx); |
- |
- // Load suspended function and context. |
- __ mov(esi, FieldOperand(ebx, JSGeneratorObject::kContextOffset)); |
- __ mov(edi, FieldOperand(ebx, JSGeneratorObject::kFunctionOffset)); |
- |
- // Push receiver. |
- __ push(FieldOperand(ebx, JSGeneratorObject::kReceiverOffset)); |
- |
- // Push holes for arguments to generator function. |
- __ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); |
- __ mov(edx, |
- FieldOperand(edx, SharedFunctionInfo::kFormalParameterCountOffset)); |
- __ mov(ecx, isolate()->factory()->the_hole_value()); |
- Label push_argument_holes, push_frame; |
- __ bind(&push_argument_holes); |
- __ sub(edx, Immediate(Smi::FromInt(1))); |
- __ j(carry, &push_frame); |
- __ push(ecx); |
- __ jmp(&push_argument_holes); |
- |
- // Enter a new JavaScript frame, and initialize its slots as they were when |
- // the generator was suspended. |
- Label resume_frame, done; |
- __ bind(&push_frame); |
- __ call(&resume_frame); |
- __ jmp(&done); |
- __ bind(&resume_frame); |
- __ push(ebp); // Caller's frame pointer. |
- __ mov(ebp, esp); |
- __ push(esi); // Callee's context. |
- __ push(edi); // Callee's JS Function. |
- |
- // Load the operand stack size. |
- __ mov(edx, FieldOperand(ebx, JSGeneratorObject::kOperandStackOffset)); |
- __ mov(edx, FieldOperand(edx, FixedArray::kLengthOffset)); |
- __ SmiUntag(edx); |
- |
- // If we are sending a value and there is no operand stack, we can jump back |
- // in directly. |
- if (resume_mode == JSGeneratorObject::NEXT) { |
- Label slow_resume; |
- __ cmp(edx, Immediate(0)); |
- __ j(not_zero, &slow_resume); |
- __ mov(edx, FieldOperand(edi, JSFunction::kCodeEntryOffset)); |
- __ mov(ecx, FieldOperand(ebx, JSGeneratorObject::kContinuationOffset)); |
- __ SmiUntag(ecx); |
- __ add(edx, ecx); |
- __ mov(FieldOperand(ebx, JSGeneratorObject::kContinuationOffset), |
- Immediate(Smi::FromInt(JSGeneratorObject::kGeneratorExecuting))); |
- __ jmp(edx); |
- __ bind(&slow_resume); |
- } |
- |
- // Otherwise, we push holes for the operand stack and call the runtime to fix |
- // up the stack and the handlers. |
- Label push_operand_holes, call_resume; |
- __ bind(&push_operand_holes); |
- __ sub(edx, Immediate(1)); |
- __ j(carry, &call_resume); |
- __ push(ecx); |
- __ jmp(&push_operand_holes); |
- __ bind(&call_resume); |
- __ push(ebx); |
- __ push(result_register()); |
- __ Push(Smi::FromInt(resume_mode)); |
- __ CallRuntime(Runtime::kResumeJSGeneratorObject, 3); |
- // Not reached: the runtime call returns elsewhere. |
- __ Abort(kGeneratorFailedToResume); |
- |
- __ bind(&done); |
- context()->Plug(result_register()); |
-} |
- |
- |
-void FullCodeGenerator::EmitCreateIteratorResult(bool done) { |
- Label gc_required; |
- Label allocated; |
- |
- const int instance_size = 5 * kPointerSize; |
- DCHECK_EQ(isolate()->native_context()->iterator_result_map()->instance_size(), |
- instance_size); |
- |
- __ Allocate(instance_size, eax, ecx, edx, &gc_required, TAG_OBJECT); |
- __ jmp(&allocated); |
- |
- __ bind(&gc_required); |
- __ Push(Smi::FromInt(instance_size)); |
- __ CallRuntime(Runtime::kAllocateInNewSpace, 1); |
- __ mov(context_register(), |
- Operand(ebp, StandardFrameConstants::kContextOffset)); |
- |
- __ bind(&allocated); |
- __ mov(ebx, Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
- __ mov(ebx, FieldOperand(ebx, GlobalObject::kNativeContextOffset)); |
- __ mov(ebx, ContextOperand(ebx, Context::ITERATOR_RESULT_MAP_INDEX)); |
- __ pop(ecx); |
- __ mov(edx, isolate()->factory()->ToBoolean(done)); |
- __ mov(FieldOperand(eax, HeapObject::kMapOffset), ebx); |
- __ mov(FieldOperand(eax, JSObject::kPropertiesOffset), |
- isolate()->factory()->empty_fixed_array()); |
- __ mov(FieldOperand(eax, JSObject::kElementsOffset), |
- isolate()->factory()->empty_fixed_array()); |
- __ mov(FieldOperand(eax, JSGeneratorObject::kResultValuePropertyOffset), ecx); |
- __ mov(FieldOperand(eax, JSGeneratorObject::kResultDonePropertyOffset), edx); |
- |
- // Only the value field needs a write barrier, as the other values are in the |
- // root set. |
- __ RecordWriteField(eax, JSGeneratorObject::kResultValuePropertyOffset, |
- ecx, edx, kDontSaveFPRegs); |
-} |
- |
- |
-void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) { |
- SetExpressionPosition(prop); |
- Literal* key = prop->key()->AsLiteral(); |
- DCHECK(!key->value()->IsSmi()); |
- DCHECK(!prop->IsSuperAccess()); |
- |
- __ mov(LoadDescriptor::NameRegister(), Immediate(key->value())); |
- __ mov(LoadDescriptor::SlotRegister(), |
- Immediate(SmiFromSlot(prop->PropertyFeedbackSlot()))); |
- CallLoadIC(NOT_INSIDE_TYPEOF, language_mode()); |
-} |
- |
- |
-void FullCodeGenerator::EmitNamedSuperPropertyLoad(Property* prop) { |
- // Stack: receiver, home_object. |
- SetExpressionPosition(prop); |
- Literal* key = prop->key()->AsLiteral(); |
- DCHECK(!key->value()->IsSmi()); |
- DCHECK(prop->IsSuperAccess()); |
- |
- __ push(Immediate(key->value())); |
- __ push(Immediate(Smi::FromInt(language_mode()))); |
- __ CallRuntime(Runtime::kLoadFromSuper, 4); |
-} |
- |
- |
-void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) { |
- SetExpressionPosition(prop); |
- Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate(), language_mode()).code(); |
- __ mov(LoadDescriptor::SlotRegister(), |
- Immediate(SmiFromSlot(prop->PropertyFeedbackSlot()))); |
- CallIC(ic); |
-} |
- |
- |
-void FullCodeGenerator::EmitKeyedSuperPropertyLoad(Property* prop) { |
- // Stack: receiver, home_object, key. |
- SetExpressionPosition(prop); |
- __ push(Immediate(Smi::FromInt(language_mode()))); |
- __ CallRuntime(Runtime::kLoadKeyedFromSuper, 4); |
-} |
- |
- |
-void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr, |
- Token::Value op, |
- Expression* left, |
- Expression* right) { |
- // Do combined smi check of the operands. Left operand is on the |
- // stack. Right operand is in eax. |
- Label smi_case, done, stub_call; |
- __ pop(edx); |
- __ mov(ecx, eax); |
- __ or_(eax, edx); |
- JumpPatchSite patch_site(masm_); |
- patch_site.EmitJumpIfSmi(eax, &smi_case, Label::kNear); |
- |
- __ bind(&stub_call); |
- __ mov(eax, ecx); |
- Handle<Code> code = |
- CodeFactory::BinaryOpIC(isolate(), op, strength(language_mode())).code(); |
- CallIC(code, expr->BinaryOperationFeedbackId()); |
- patch_site.EmitPatchInfo(); |
- __ jmp(&done, Label::kNear); |
- |
- // Smi case. |
- __ bind(&smi_case); |
- __ mov(eax, edx); // Copy left operand in case of a stub call. |
- |
- switch (op) { |
- case Token::SAR: |
- __ SmiUntag(ecx); |
- __ sar_cl(eax); // No checks of result necessary |
- __ and_(eax, Immediate(~kSmiTagMask)); |
- break; |
- case Token::SHL: { |
- Label result_ok; |
- __ SmiUntag(eax); |
- __ SmiUntag(ecx); |
- __ shl_cl(eax); |
- // Check that the *signed* result fits in a smi. |
- __ cmp(eax, 0xc0000000); |
- __ j(positive, &result_ok); |
- __ SmiTag(ecx); |
- __ jmp(&stub_call); |
- __ bind(&result_ok); |
- __ SmiTag(eax); |
- break; |
- } |
- case Token::SHR: { |
- Label result_ok; |
- __ SmiUntag(eax); |
- __ SmiUntag(ecx); |
- __ shr_cl(eax); |
- __ test(eax, Immediate(0xc0000000)); |
- __ j(zero, &result_ok); |
- __ SmiTag(ecx); |
- __ jmp(&stub_call); |
- __ bind(&result_ok); |
- __ SmiTag(eax); |
- break; |
- } |
- case Token::ADD: |
- __ add(eax, ecx); |
- __ j(overflow, &stub_call); |
- break; |
- case Token::SUB: |
- __ sub(eax, ecx); |
- __ j(overflow, &stub_call); |
- break; |
- case Token::MUL: { |
- __ SmiUntag(eax); |
- __ imul(eax, ecx); |
- __ j(overflow, &stub_call); |
- __ test(eax, eax); |
- __ j(not_zero, &done, Label::kNear); |
- __ mov(ebx, edx); |
- __ or_(ebx, ecx); |
- __ j(negative, &stub_call); |
- break; |
- } |
- case Token::BIT_OR: |
- __ or_(eax, ecx); |
- break; |
- case Token::BIT_AND: |
- __ and_(eax, ecx); |
- break; |
- case Token::BIT_XOR: |
- __ xor_(eax, ecx); |
- break; |
- default: |
- UNREACHABLE(); |
- } |
- |
- __ bind(&done); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit, |
- int* used_store_slots) { |
- // Constructor is in eax. |
- DCHECK(lit != NULL); |
- __ push(eax); |
- |
- // No access check is needed here since the constructor is created by the |
- // class literal. |
- Register scratch = ebx; |
- __ mov(scratch, FieldOperand(eax, JSFunction::kPrototypeOrInitialMapOffset)); |
- __ Push(scratch); |
- |
- for (int i = 0; i < lit->properties()->length(); i++) { |
- ObjectLiteral::Property* property = lit->properties()->at(i); |
- Expression* value = property->value(); |
- |
- if (property->is_static()) { |
- __ push(Operand(esp, kPointerSize)); // constructor |
- } else { |
- __ push(Operand(esp, 0)); // prototype |
- } |
- EmitPropertyKey(property, lit->GetIdForProperty(i)); |
- |
- // The static prototype property is read only. We handle the non computed |
- // property name case in the parser. Since this is the only case where we |
- // need to check for an own read only property we special case this so we do |
- // not need to do this for every property. |
- if (property->is_static() && property->is_computed_name()) { |
- __ CallRuntime(Runtime::kThrowIfStaticPrototype, 1); |
- __ push(eax); |
- } |
- |
- VisitForStackValue(value); |
- EmitSetHomeObjectIfNeeded(value, 2, |
- lit->SlotForHomeObject(value, used_store_slots)); |
- |
- switch (property->kind()) { |
- case ObjectLiteral::Property::CONSTANT: |
- case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
- case ObjectLiteral::Property::PROTOTYPE: |
- UNREACHABLE(); |
- case ObjectLiteral::Property::COMPUTED: |
- __ CallRuntime(Runtime::kDefineClassMethod, 3); |
- break; |
- |
- case ObjectLiteral::Property::GETTER: |
- __ push(Immediate(Smi::FromInt(DONT_ENUM))); |
- __ CallRuntime(Runtime::kDefineGetterPropertyUnchecked, 4); |
- break; |
- |
- case ObjectLiteral::Property::SETTER: |
- __ push(Immediate(Smi::FromInt(DONT_ENUM))); |
- __ CallRuntime(Runtime::kDefineSetterPropertyUnchecked, 4); |
- break; |
- } |
- } |
- |
- // prototype |
- __ CallRuntime(Runtime::kToFastProperties, 1); |
- |
- // constructor |
- __ CallRuntime(Runtime::kToFastProperties, 1); |
- |
- if (is_strong(language_mode())) { |
- __ mov(scratch, |
- FieldOperand(eax, JSFunction::kPrototypeOrInitialMapOffset)); |
- __ push(eax); |
- __ Push(scratch); |
- // TODO(conradw): It would be more efficient to define the properties with |
- // the right attributes the first time round. |
- // Freeze the prototype. |
- __ CallRuntime(Runtime::kObjectFreeze, 1); |
- // Freeze the constructor. |
- __ CallRuntime(Runtime::kObjectFreeze, 1); |
- } |
-} |
- |
- |
-void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr, Token::Value op) { |
- __ pop(edx); |
- Handle<Code> code = |
- CodeFactory::BinaryOpIC(isolate(), op, strength(language_mode())).code(); |
- JumpPatchSite patch_site(masm_); // unbound, signals no inlined smi code. |
- CallIC(code, expr->BinaryOperationFeedbackId()); |
- patch_site.EmitPatchInfo(); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitAssignment(Expression* expr, |
- FeedbackVectorICSlot slot) { |
- DCHECK(expr->IsValidReferenceExpressionOrThis()); |
- |
- Property* prop = expr->AsProperty(); |
- LhsKind assign_type = Property::GetAssignType(prop); |
- |
- switch (assign_type) { |
- case VARIABLE: { |
- Variable* var = expr->AsVariableProxy()->var(); |
- EffectContext context(this); |
- EmitVariableAssignment(var, Token::ASSIGN, slot); |
- break; |
- } |
- case NAMED_PROPERTY: { |
- __ push(eax); // Preserve value. |
- VisitForAccumulatorValue(prop->obj()); |
- __ Move(StoreDescriptor::ReceiverRegister(), eax); |
- __ pop(StoreDescriptor::ValueRegister()); // Restore value. |
- __ mov(StoreDescriptor::NameRegister(), |
- prop->key()->AsLiteral()->value()); |
- if (FLAG_vector_stores) EmitLoadStoreICSlot(slot); |
- CallStoreIC(); |
- break; |
- } |
- case NAMED_SUPER_PROPERTY: { |
- __ push(eax); |
- VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
- VisitForAccumulatorValue( |
- prop->obj()->AsSuperPropertyReference()->home_object()); |
- // stack: value, this; eax: home_object |
- Register scratch = ecx; |
- Register scratch2 = edx; |
- __ mov(scratch, result_register()); // home_object |
- __ mov(eax, MemOperand(esp, kPointerSize)); // value |
- __ mov(scratch2, MemOperand(esp, 0)); // this |
- __ mov(MemOperand(esp, kPointerSize), scratch2); // this |
- __ mov(MemOperand(esp, 0), scratch); // home_object |
- // stack: this, home_object. eax: value |
- EmitNamedSuperPropertyStore(prop); |
- break; |
- } |
- case KEYED_SUPER_PROPERTY: { |
- __ push(eax); |
- VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
- VisitForStackValue( |
- prop->obj()->AsSuperPropertyReference()->home_object()); |
- VisitForAccumulatorValue(prop->key()); |
- Register scratch = ecx; |
- Register scratch2 = edx; |
- __ mov(scratch2, MemOperand(esp, 2 * kPointerSize)); // value |
- // stack: value, this, home_object; eax: key, edx: value |
- __ mov(scratch, MemOperand(esp, kPointerSize)); // this |
- __ mov(MemOperand(esp, 2 * kPointerSize), scratch); |
- __ mov(scratch, MemOperand(esp, 0)); // home_object |
- __ mov(MemOperand(esp, kPointerSize), scratch); |
- __ mov(MemOperand(esp, 0), eax); |
- __ mov(eax, scratch2); |
- // stack: this, home_object, key; eax: value. |
- EmitKeyedSuperPropertyStore(prop); |
- break; |
- } |
- case KEYED_PROPERTY: { |
- __ push(eax); // Preserve value. |
- VisitForStackValue(prop->obj()); |
- VisitForAccumulatorValue(prop->key()); |
- __ Move(StoreDescriptor::NameRegister(), eax); |
- __ pop(StoreDescriptor::ReceiverRegister()); // Receiver. |
- __ pop(StoreDescriptor::ValueRegister()); // Restore value. |
- if (FLAG_vector_stores) EmitLoadStoreICSlot(slot); |
- Handle<Code> ic = |
- CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
- CallIC(ic); |
- break; |
- } |
- } |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot( |
- Variable* var, MemOperand location) { |
- __ mov(location, eax); |
- if (var->IsContextSlot()) { |
- __ mov(edx, eax); |
- int offset = Context::SlotOffset(var->index()); |
- __ RecordWriteContextSlot(ecx, offset, edx, ebx, kDontSaveFPRegs); |
- } |
-} |
- |
- |
-void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op, |
- FeedbackVectorICSlot slot) { |
- if (var->IsUnallocated()) { |
- // Global var, const, or let. |
- __ mov(StoreDescriptor::NameRegister(), var->name()); |
- __ mov(StoreDescriptor::ReceiverRegister(), GlobalObjectOperand()); |
- if (FLAG_vector_stores) EmitLoadStoreICSlot(slot); |
- CallStoreIC(); |
- |
- } else if (var->IsGlobalSlot()) { |
- // Global var, const, or let. |
- DCHECK(var->index() > 0); |
- DCHECK(var->IsStaticGlobalObjectProperty()); |
- // Each var occupies two slots in the context: for reads and writes. |
- int slot_index = var->index() + 1; |
- int depth = scope()->ContextChainLength(var->scope()); |
- __ mov(StoreGlobalViaContextDescriptor::DepthRegister(), |
- Immediate(Smi::FromInt(depth))); |
- __ mov(StoreGlobalViaContextDescriptor::SlotRegister(), |
- Immediate(Smi::FromInt(slot_index))); |
- __ mov(StoreGlobalViaContextDescriptor::NameRegister(), var->name()); |
- DCHECK(StoreGlobalViaContextDescriptor::ValueRegister().is(eax)); |
- StoreGlobalViaContextStub stub(isolate(), depth, language_mode()); |
- __ CallStub(&stub); |
- |
- } else if (var->mode() == LET && op != Token::INIT_LET) { |
- // Non-initializing assignment to let variable needs a write barrier. |
- DCHECK(!var->IsLookupSlot()); |
- DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
- Label assign; |
- MemOperand location = VarOperand(var, ecx); |
- __ mov(edx, location); |
- __ cmp(edx, isolate()->factory()->the_hole_value()); |
- __ j(not_equal, &assign, Label::kNear); |
- __ push(Immediate(var->name())); |
- __ CallRuntime(Runtime::kThrowReferenceError, 1); |
- __ bind(&assign); |
- EmitStoreToStackLocalOrContextSlot(var, location); |
- |
- } else if (var->mode() == CONST && op != Token::INIT_CONST) { |
- // Assignment to const variable needs a write barrier. |
- DCHECK(!var->IsLookupSlot()); |
- DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
- Label const_error; |
- MemOperand location = VarOperand(var, ecx); |
- __ mov(edx, location); |
- __ cmp(edx, isolate()->factory()->the_hole_value()); |
- __ j(not_equal, &const_error, Label::kNear); |
- __ push(Immediate(var->name())); |
- __ CallRuntime(Runtime::kThrowReferenceError, 1); |
- __ bind(&const_error); |
- __ CallRuntime(Runtime::kThrowConstAssignError, 0); |
- |
- } else if (var->is_this() && op == Token::INIT_CONST) { |
- // Initializing assignment to const {this} needs a write barrier. |
- DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
- Label uninitialized_this; |
- MemOperand location = VarOperand(var, ecx); |
- __ mov(edx, location); |
- __ cmp(edx, isolate()->factory()->the_hole_value()); |
- __ j(equal, &uninitialized_this); |
- __ push(Immediate(var->name())); |
- __ CallRuntime(Runtime::kThrowReferenceError, 1); |
- __ bind(&uninitialized_this); |
- EmitStoreToStackLocalOrContextSlot(var, location); |
- |
- } else if (!var->is_const_mode() || op == Token::INIT_CONST) { |
- if (var->IsLookupSlot()) { |
- // Assignment to var. |
- __ push(eax); // Value. |
- __ push(esi); // Context. |
- __ push(Immediate(var->name())); |
- __ push(Immediate(Smi::FromInt(language_mode()))); |
- __ CallRuntime(Runtime::kStoreLookupSlot, 4); |
- } else { |
- // Assignment to var or initializing assignment to let/const in harmony |
- // mode. |
- DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
- MemOperand location = VarOperand(var, ecx); |
- if (generate_debug_code_ && op == Token::INIT_LET) { |
- // Check for an uninitialized let binding. |
- __ mov(edx, location); |
- __ cmp(edx, isolate()->factory()->the_hole_value()); |
- __ Check(equal, kLetBindingReInitialization); |
- } |
- EmitStoreToStackLocalOrContextSlot(var, location); |
- } |
- |
- } else if (op == Token::INIT_CONST_LEGACY) { |
- // Const initializers need a write barrier. |
- DCHECK(var->mode() == CONST_LEGACY); |
- DCHECK(!var->IsParameter()); // No const parameters. |
- if (var->IsLookupSlot()) { |
- __ push(eax); |
- __ push(esi); |
- __ push(Immediate(var->name())); |
- __ CallRuntime(Runtime::kInitializeLegacyConstLookupSlot, 3); |
- } else { |
- DCHECK(var->IsStackLocal() || var->IsContextSlot()); |
- Label skip; |
- MemOperand location = VarOperand(var, ecx); |
- __ mov(edx, location); |
- __ cmp(edx, isolate()->factory()->the_hole_value()); |
- __ j(not_equal, &skip, Label::kNear); |
- EmitStoreToStackLocalOrContextSlot(var, location); |
- __ bind(&skip); |
- } |
- |
- } else { |
- DCHECK(var->mode() == CONST_LEGACY && op != Token::INIT_CONST_LEGACY); |
- if (is_strict(language_mode())) { |
- __ CallRuntime(Runtime::kThrowConstAssignError, 0); |
- } |
- // Silently ignore store in sloppy mode. |
- } |
-} |
- |
- |
-void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { |
- // Assignment to a property, using a named store IC. |
- // eax : value |
- // esp[0] : receiver |
- Property* prop = expr->target()->AsProperty(); |
- DCHECK(prop != NULL); |
- DCHECK(prop->key()->IsLiteral()); |
- |
- __ mov(StoreDescriptor::NameRegister(), prop->key()->AsLiteral()->value()); |
- __ pop(StoreDescriptor::ReceiverRegister()); |
- if (FLAG_vector_stores) { |
- EmitLoadStoreICSlot(expr->AssignmentSlot()); |
- CallStoreIC(); |
- } else { |
- CallStoreIC(expr->AssignmentFeedbackId()); |
- } |
- PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) { |
- // Assignment to named property of super. |
- // eax : value |
- // stack : receiver ('this'), home_object |
- DCHECK(prop != NULL); |
- Literal* key = prop->key()->AsLiteral(); |
- DCHECK(key != NULL); |
- |
- __ push(Immediate(key->value())); |
- __ push(eax); |
- __ CallRuntime((is_strict(language_mode()) ? Runtime::kStoreToSuper_Strict |
- : Runtime::kStoreToSuper_Sloppy), |
- 4); |
-} |
- |
- |
-void FullCodeGenerator::EmitKeyedSuperPropertyStore(Property* prop) { |
- // Assignment to named property of super. |
- // eax : value |
- // stack : receiver ('this'), home_object, key |
- |
- __ push(eax); |
- __ CallRuntime( |
- (is_strict(language_mode()) ? Runtime::kStoreKeyedToSuper_Strict |
- : Runtime::kStoreKeyedToSuper_Sloppy), |
- 4); |
-} |
- |
- |
-void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) { |
- // Assignment to a property, using a keyed store IC. |
- // eax : value |
- // esp[0] : key |
- // esp[kPointerSize] : receiver |
- |
- __ pop(StoreDescriptor::NameRegister()); // Key. |
- __ pop(StoreDescriptor::ReceiverRegister()); |
- DCHECK(StoreDescriptor::ValueRegister().is(eax)); |
- Handle<Code> ic = |
- CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
- if (FLAG_vector_stores) { |
- EmitLoadStoreICSlot(expr->AssignmentSlot()); |
- CallIC(ic); |
- } else { |
- CallIC(ic, expr->AssignmentFeedbackId()); |
- } |
- |
- PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::VisitProperty(Property* expr) { |
- Comment cmnt(masm_, "[ Property"); |
- SetExpressionPosition(expr); |
- |
- Expression* key = expr->key(); |
- |
- if (key->IsPropertyName()) { |
- if (!expr->IsSuperAccess()) { |
- VisitForAccumulatorValue(expr->obj()); |
- __ Move(LoadDescriptor::ReceiverRegister(), result_register()); |
- EmitNamedPropertyLoad(expr); |
- } else { |
- VisitForStackValue(expr->obj()->AsSuperPropertyReference()->this_var()); |
- VisitForStackValue( |
- expr->obj()->AsSuperPropertyReference()->home_object()); |
- EmitNamedSuperPropertyLoad(expr); |
- } |
- } else { |
- if (!expr->IsSuperAccess()) { |
- VisitForStackValue(expr->obj()); |
- VisitForAccumulatorValue(expr->key()); |
- __ pop(LoadDescriptor::ReceiverRegister()); // Object. |
- __ Move(LoadDescriptor::NameRegister(), result_register()); // Key. |
- EmitKeyedPropertyLoad(expr); |
- } else { |
- VisitForStackValue(expr->obj()->AsSuperPropertyReference()->this_var()); |
- VisitForStackValue( |
- expr->obj()->AsSuperPropertyReference()->home_object()); |
- VisitForStackValue(expr->key()); |
- EmitKeyedSuperPropertyLoad(expr); |
- } |
- } |
- PrepareForBailoutForId(expr->LoadId(), TOS_REG); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::CallIC(Handle<Code> code, |
- TypeFeedbackId ast_id) { |
- ic_total_count_++; |
- __ call(code, RelocInfo::CODE_TARGET, ast_id); |
-} |
- |
- |
-// Code common for calls using the IC. |
-void FullCodeGenerator::EmitCallWithLoadIC(Call* expr) { |
- Expression* callee = expr->expression(); |
- |
- CallICState::CallType call_type = |
- callee->IsVariableProxy() ? CallICState::FUNCTION : CallICState::METHOD; |
- // Get the target function. |
- if (call_type == CallICState::FUNCTION) { |
- { StackValueContext context(this); |
- EmitVariableLoad(callee->AsVariableProxy()); |
- PrepareForBailout(callee, NO_REGISTERS); |
- } |
- // Push undefined as receiver. This is patched in the method prologue if it |
- // is a sloppy mode method. |
- __ push(Immediate(isolate()->factory()->undefined_value())); |
- } else { |
- // Load the function from the receiver. |
- DCHECK(callee->IsProperty()); |
- DCHECK(!callee->AsProperty()->IsSuperAccess()); |
- __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, 0)); |
- EmitNamedPropertyLoad(callee->AsProperty()); |
- PrepareForBailoutForId(callee->AsProperty()->LoadId(), TOS_REG); |
- // Push the target function under the receiver. |
- __ push(Operand(esp, 0)); |
- __ mov(Operand(esp, kPointerSize), eax); |
- } |
- |
- EmitCall(expr, call_type); |
-} |
- |
- |
-void FullCodeGenerator::EmitSuperCallWithLoadIC(Call* expr) { |
- SetExpressionPosition(expr); |
- Expression* callee = expr->expression(); |
- DCHECK(callee->IsProperty()); |
- Property* prop = callee->AsProperty(); |
- DCHECK(prop->IsSuperAccess()); |
- |
- Literal* key = prop->key()->AsLiteral(); |
- DCHECK(!key->value()->IsSmi()); |
- // Load the function from the receiver. |
- SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference(); |
- VisitForStackValue(super_ref->home_object()); |
- VisitForAccumulatorValue(super_ref->this_var()); |
- __ push(eax); |
- __ push(eax); |
- __ push(Operand(esp, kPointerSize * 2)); |
- __ push(Immediate(key->value())); |
- __ push(Immediate(Smi::FromInt(language_mode()))); |
- // Stack here: |
- // - home_object |
- // - this (receiver) |
- // - this (receiver) <-- LoadFromSuper will pop here and below. |
- // - home_object |
- // - key |
- // - language_mode |
- __ CallRuntime(Runtime::kLoadFromSuper, 4); |
- |
- // Replace home_object with target function. |
- __ mov(Operand(esp, kPointerSize), eax); |
- |
- // Stack here: |
- // - target function |
- // - this (receiver) |
- EmitCall(expr, CallICState::METHOD); |
-} |
- |
- |
-// Code common for calls using the IC. |
-void FullCodeGenerator::EmitKeyedCallWithLoadIC(Call* expr, |
- Expression* key) { |
- // Load the key. |
- VisitForAccumulatorValue(key); |
- |
- Expression* callee = expr->expression(); |
- |
- // Load the function from the receiver. |
- DCHECK(callee->IsProperty()); |
- __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, 0)); |
- __ mov(LoadDescriptor::NameRegister(), eax); |
- EmitKeyedPropertyLoad(callee->AsProperty()); |
- PrepareForBailoutForId(callee->AsProperty()->LoadId(), TOS_REG); |
- |
- // Push the target function under the receiver. |
- __ push(Operand(esp, 0)); |
- __ mov(Operand(esp, kPointerSize), eax); |
- |
- EmitCall(expr, CallICState::METHOD); |
-} |
- |
- |
-void FullCodeGenerator::EmitKeyedSuperCallWithLoadIC(Call* expr) { |
- Expression* callee = expr->expression(); |
- DCHECK(callee->IsProperty()); |
- Property* prop = callee->AsProperty(); |
- DCHECK(prop->IsSuperAccess()); |
- |
- SetExpressionPosition(prop); |
- // Load the function from the receiver. |
- SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference(); |
- VisitForStackValue(super_ref->home_object()); |
- VisitForAccumulatorValue(super_ref->this_var()); |
- __ push(eax); |
- __ push(eax); |
- __ push(Operand(esp, kPointerSize * 2)); |
- VisitForStackValue(prop->key()); |
- __ push(Immediate(Smi::FromInt(language_mode()))); |
- // Stack here: |
- // - home_object |
- // - this (receiver) |
- // - this (receiver) <-- LoadKeyedFromSuper will pop here and below. |
- // - home_object |
- // - key |
- // - language_mode |
- __ CallRuntime(Runtime::kLoadKeyedFromSuper, 4); |
- |
- // Replace home_object with target function. |
- __ mov(Operand(esp, kPointerSize), eax); |
- |
- // Stack here: |
- // - target function |
- // - this (receiver) |
- EmitCall(expr, CallICState::METHOD); |
-} |
- |
- |
-void FullCodeGenerator::EmitCall(Call* expr, CallICState::CallType call_type) { |
- // Load the arguments. |
- ZoneList<Expression*>* args = expr->arguments(); |
- int arg_count = args->length(); |
- for (int i = 0; i < arg_count; i++) { |
- VisitForStackValue(args->at(i)); |
- } |
- |
- SetCallPosition(expr, arg_count); |
- Handle<Code> ic = CodeFactory::CallIC(isolate(), arg_count, call_type).code(); |
- __ Move(edx, Immediate(SmiFromSlot(expr->CallFeedbackICSlot()))); |
- __ mov(edi, Operand(esp, (arg_count + 1) * kPointerSize)); |
- // Don't assign a type feedback id to the IC, since type feedback is provided |
- // by the vector above. |
- CallIC(ic); |
- |
- RecordJSReturnSite(expr); |
- |
- // Restore context register. |
- __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
- |
- context()->DropAndPlug(1, eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitResolvePossiblyDirectEval(int arg_count) { |
- // Push copy of the first argument or undefined if it doesn't exist. |
- if (arg_count > 0) { |
- __ push(Operand(esp, arg_count * kPointerSize)); |
- } else { |
- __ push(Immediate(isolate()->factory()->undefined_value())); |
- } |
- |
- // Push the enclosing function. |
- __ push(Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
- |
- // Push the language mode. |
- __ push(Immediate(Smi::FromInt(language_mode()))); |
- |
- // Push the start position of the scope the calls resides in. |
- __ push(Immediate(Smi::FromInt(scope()->start_position()))); |
- |
- // Do the runtime call. |
- __ CallRuntime(Runtime::kResolvePossiblyDirectEval, 5); |
-} |
- |
- |
-// See http://www.ecma-international.org/ecma-262/6.0/#sec-function-calls. |
-void FullCodeGenerator::PushCalleeAndWithBaseObject(Call* expr) { |
- VariableProxy* callee = expr->expression()->AsVariableProxy(); |
- if (callee->var()->IsLookupSlot()) { |
- Label slow, done; |
- SetExpressionPosition(callee); |
- // Generate code for loading from variables potentially shadowed by |
- // eval-introduced variables. |
- EmitDynamicLookupFastCase(callee, NOT_INSIDE_TYPEOF, &slow, &done); |
- |
- __ bind(&slow); |
- // Call the runtime to find the function to call (returned in eax) and |
- // the object holding it (returned in edx). |
- __ push(context_register()); |
- __ push(Immediate(callee->name())); |
- __ CallRuntime(Runtime::kLoadLookupSlot, 2); |
- __ push(eax); // Function. |
- __ push(edx); // Receiver. |
- PrepareForBailoutForId(expr->LookupId(), NO_REGISTERS); |
- |
- // If fast case code has been generated, emit code to push the function |
- // and receiver and have the slow path jump around this code. |
- if (done.is_linked()) { |
- Label call; |
- __ jmp(&call, Label::kNear); |
- __ bind(&done); |
- // Push function. |
- __ push(eax); |
- // The receiver is implicitly the global receiver. Indicate this by |
- // passing the hole to the call function stub. |
- __ push(Immediate(isolate()->factory()->undefined_value())); |
- __ bind(&call); |
- } |
- } else { |
- VisitForStackValue(callee); |
- // refEnv.WithBaseObject() |
- __ push(Immediate(isolate()->factory()->undefined_value())); |
- } |
-} |
- |
- |
-void FullCodeGenerator::VisitCall(Call* expr) { |
-#ifdef DEBUG |
- // We want to verify that RecordJSReturnSite gets called on all paths |
- // through this function. Avoid early returns. |
- expr->return_is_recorded_ = false; |
-#endif |
- |
- Comment cmnt(masm_, "[ Call"); |
- Expression* callee = expr->expression(); |
- Call::CallType call_type = expr->GetCallType(isolate()); |
- |
- if (call_type == Call::POSSIBLY_EVAL_CALL) { |
- // In a call to eval, we first call RuntimeHidden_ResolvePossiblyDirectEval |
- // to resolve the function we need to call. Then we call the resolved |
- // function using the given arguments. |
- ZoneList<Expression*>* args = expr->arguments(); |
- int arg_count = args->length(); |
- |
- PushCalleeAndWithBaseObject(expr); |
- |
- // Push the arguments. |
- for (int i = 0; i < arg_count; i++) { |
- VisitForStackValue(args->at(i)); |
- } |
- |
- // Push a copy of the function (found below the arguments) and |
- // resolve eval. |
- __ push(Operand(esp, (arg_count + 1) * kPointerSize)); |
- EmitResolvePossiblyDirectEval(arg_count); |
- |
- // Touch up the stack with the resolved function. |
- __ mov(Operand(esp, (arg_count + 1) * kPointerSize), eax); |
- |
- PrepareForBailoutForId(expr->EvalId(), NO_REGISTERS); |
- |
- SetCallPosition(expr, arg_count); |
- CallFunctionStub stub(isolate(), arg_count, NO_CALL_FUNCTION_FLAGS); |
- __ mov(edi, Operand(esp, (arg_count + 1) * kPointerSize)); |
- __ CallStub(&stub); |
- RecordJSReturnSite(expr); |
- // Restore context register. |
- __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
- context()->DropAndPlug(1, eax); |
- |
- } else if (call_type == Call::GLOBAL_CALL) { |
- EmitCallWithLoadIC(expr); |
- } else if (call_type == Call::LOOKUP_SLOT_CALL) { |
- // Call to a lookup slot (dynamically introduced variable). |
- PushCalleeAndWithBaseObject(expr); |
- EmitCall(expr); |
- } else if (call_type == Call::PROPERTY_CALL) { |
- Property* property = callee->AsProperty(); |
- bool is_named_call = property->key()->IsPropertyName(); |
- if (property->IsSuperAccess()) { |
- if (is_named_call) { |
- EmitSuperCallWithLoadIC(expr); |
- } else { |
- EmitKeyedSuperCallWithLoadIC(expr); |
- } |
- } else { |
- VisitForStackValue(property->obj()); |
- if (is_named_call) { |
- EmitCallWithLoadIC(expr); |
- } else { |
- EmitKeyedCallWithLoadIC(expr, property->key()); |
- } |
- } |
- } else if (call_type == Call::SUPER_CALL) { |
- EmitSuperConstructorCall(expr); |
- } else { |
- DCHECK(call_type == Call::OTHER_CALL); |
- // Call to an arbitrary expression not handled specially above. |
- VisitForStackValue(callee); |
- __ push(Immediate(isolate()->factory()->undefined_value())); |
- // Emit function call. |
- EmitCall(expr); |
- } |
- |
-#ifdef DEBUG |
- // RecordJSReturnSite should have been called. |
- DCHECK(expr->return_is_recorded_); |
-#endif |
-} |
- |
- |
-void FullCodeGenerator::VisitCallNew(CallNew* expr) { |
- Comment cmnt(masm_, "[ CallNew"); |
- // According to ECMA-262, section 11.2.2, page 44, the function |
- // expression in new calls must be evaluated before the |
- // arguments. |
- |
- // Push constructor on the stack. If it's not a function it's used as |
- // receiver for CALL_NON_FUNCTION, otherwise the value on the stack is |
- // ignored. |
- DCHECK(!expr->expression()->IsSuperPropertyReference()); |
- VisitForStackValue(expr->expression()); |
- |
- // Push the arguments ("left-to-right") on the stack. |
- ZoneList<Expression*>* args = expr->arguments(); |
- int arg_count = args->length(); |
- for (int i = 0; i < arg_count; i++) { |
- VisitForStackValue(args->at(i)); |
- } |
- |
- // Call the construct call builtin that handles allocation and |
- // constructor invocation. |
- SetConstructCallPosition(expr); |
- |
- // Load function and argument count into edi and eax. |
- __ Move(eax, Immediate(arg_count)); |
- __ mov(edi, Operand(esp, arg_count * kPointerSize)); |
- |
- // Record call targets in unoptimized code. |
- if (FLAG_pretenuring_call_new) { |
- EnsureSlotContainsAllocationSite(expr->AllocationSiteFeedbackSlot()); |
- DCHECK(expr->AllocationSiteFeedbackSlot().ToInt() == |
- expr->CallNewFeedbackSlot().ToInt() + 1); |
- } |
- |
- __ LoadHeapObject(ebx, FeedbackVector()); |
- __ mov(edx, Immediate(SmiFromSlot(expr->CallNewFeedbackSlot()))); |
- |
- CallConstructStub stub(isolate(), RECORD_CONSTRUCTOR_TARGET); |
- __ call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL); |
- PrepareForBailoutForId(expr->ReturnId(), TOS_REG); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) { |
- SuperCallReference* super_call_ref = |
- expr->expression()->AsSuperCallReference(); |
- DCHECK_NOT_NULL(super_call_ref); |
- |
- EmitLoadSuperConstructor(super_call_ref); |
- __ push(result_register()); |
- |
- // Push the arguments ("left-to-right") on the stack. |
- ZoneList<Expression*>* args = expr->arguments(); |
- int arg_count = args->length(); |
- for (int i = 0; i < arg_count; i++) { |
- VisitForStackValue(args->at(i)); |
- } |
- |
- // Call the construct call builtin that handles allocation and |
- // constructor invocation. |
- SetConstructCallPosition(expr); |
- |
- // Load original constructor into ecx. |
- VisitForAccumulatorValue(super_call_ref->new_target_var()); |
- __ mov(ecx, result_register()); |
- |
- // Load function and argument count into edi and eax. |
- __ Move(eax, Immediate(arg_count)); |
- __ mov(edi, Operand(esp, arg_count * kPointerSize)); |
- |
- // Record call targets in unoptimized code. |
- if (FLAG_pretenuring_call_new) { |
- UNREACHABLE(); |
- /* TODO(dslomov): support pretenuring. |
- EnsureSlotContainsAllocationSite(expr->AllocationSiteFeedbackSlot()); |
- DCHECK(expr->AllocationSiteFeedbackSlot().ToInt() == |
- expr->CallNewFeedbackSlot().ToInt() + 1); |
- */ |
- } |
- |
- __ LoadHeapObject(ebx, FeedbackVector()); |
- __ mov(edx, Immediate(SmiFromSlot(expr->CallFeedbackSlot()))); |
- |
- CallConstructStub stub(isolate(), SUPER_CALL_RECORD_TARGET); |
- __ call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL); |
- |
- RecordJSReturnSite(expr); |
- |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsSmi(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- __ test(eax, Immediate(kSmiTagMask)); |
- Split(zero, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsNonNegativeSmi(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- __ test(eax, Immediate(kSmiTagMask | 0x80000000)); |
- Split(zero, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsObject(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- __ JumpIfSmi(eax, if_false); |
- __ cmp(eax, isolate()->factory()->null_value()); |
- __ j(equal, if_true); |
- __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset)); |
- // Undetectable objects behave like undefined when tested with typeof. |
- __ movzx_b(ecx, FieldOperand(ebx, Map::kBitFieldOffset)); |
- __ test(ecx, Immediate(1 << Map::kIsUndetectable)); |
- __ j(not_zero, if_false); |
- __ movzx_b(ecx, FieldOperand(ebx, Map::kInstanceTypeOffset)); |
- __ cmp(ecx, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE); |
- __ j(below, if_false); |
- __ cmp(ecx, LAST_NONCALLABLE_SPEC_OBJECT_TYPE); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(below_equal, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsSpecObject(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- __ JumpIfSmi(eax, if_false); |
- __ CmpObjectType(eax, FIRST_SPEC_OBJECT_TYPE, ebx); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(above_equal, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsUndetectableObject(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- __ JumpIfSmi(eax, if_false); |
- __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset)); |
- __ movzx_b(ebx, FieldOperand(ebx, Map::kBitFieldOffset)); |
- __ test(ebx, Immediate(1 << Map::kIsUndetectable)); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(not_zero, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsStringWrapperSafeForDefaultValueOf( |
- CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false, skip_lookup; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- __ AssertNotSmi(eax); |
- |
- // Check whether this map has already been checked to be safe for default |
- // valueOf. |
- __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset)); |
- __ test_b(FieldOperand(ebx, Map::kBitField2Offset), |
- 1 << Map::kStringWrapperSafeForDefaultValueOf); |
- __ j(not_zero, &skip_lookup); |
- |
- // Check for fast case object. Return false for slow case objects. |
- __ mov(ecx, FieldOperand(eax, JSObject::kPropertiesOffset)); |
- __ mov(ecx, FieldOperand(ecx, HeapObject::kMapOffset)); |
- __ cmp(ecx, isolate()->factory()->hash_table_map()); |
- __ j(equal, if_false); |
- |
- // Look for valueOf string in the descriptor array, and indicate false if |
- // found. Since we omit an enumeration index check, if it is added via a |
- // transition that shares its descriptor array, this is a false positive. |
- Label entry, loop, done; |
- |
- // Skip loop if no descriptors are valid. |
- __ NumberOfOwnDescriptors(ecx, ebx); |
- __ cmp(ecx, 0); |
- __ j(equal, &done); |
- |
- __ LoadInstanceDescriptors(ebx, ebx); |
- // ebx: descriptor array. |
- // ecx: valid entries in the descriptor array. |
- // Calculate the end of the descriptor array. |
- STATIC_ASSERT(kSmiTag == 0); |
- STATIC_ASSERT(kSmiTagSize == 1); |
- STATIC_ASSERT(kPointerSize == 4); |
- __ imul(ecx, ecx, DescriptorArray::kDescriptorSize); |
- __ lea(ecx, Operand(ebx, ecx, times_4, DescriptorArray::kFirstOffset)); |
- // Calculate location of the first key name. |
- __ add(ebx, Immediate(DescriptorArray::kFirstOffset)); |
- // Loop through all the keys in the descriptor array. If one of these is the |
- // internalized string "valueOf" the result is false. |
- __ jmp(&entry); |
- __ bind(&loop); |
- __ mov(edx, FieldOperand(ebx, 0)); |
- __ cmp(edx, isolate()->factory()->value_of_string()); |
- __ j(equal, if_false); |
- __ add(ebx, Immediate(DescriptorArray::kDescriptorSize * kPointerSize)); |
- __ bind(&entry); |
- __ cmp(ebx, ecx); |
- __ j(not_equal, &loop); |
- |
- __ bind(&done); |
- |
- // Reload map as register ebx was used as temporary above. |
- __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset)); |
- |
- // Set the bit in the map to indicate that there is no local valueOf field. |
- __ or_(FieldOperand(ebx, Map::kBitField2Offset), |
- Immediate(1 << Map::kStringWrapperSafeForDefaultValueOf)); |
- |
- __ bind(&skip_lookup); |
- |
- // If a valueOf property is not found on the object check that its |
- // prototype is the un-modified String prototype. If not result is false. |
- __ mov(ecx, FieldOperand(ebx, Map::kPrototypeOffset)); |
- __ JumpIfSmi(ecx, if_false); |
- __ mov(ecx, FieldOperand(ecx, HeapObject::kMapOffset)); |
- __ mov(edx, Operand(esi, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
- __ mov(edx, |
- FieldOperand(edx, GlobalObject::kNativeContextOffset)); |
- __ cmp(ecx, |
- ContextOperand(edx, |
- Context::STRING_FUNCTION_PROTOTYPE_MAP_INDEX)); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(equal, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsFunction(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- __ JumpIfSmi(eax, if_false); |
- __ CmpObjectType(eax, JS_FUNCTION_TYPE, ebx); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(equal, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsMinusZero(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- Handle<Map> map = masm()->isolate()->factory()->heap_number_map(); |
- __ CheckMap(eax, map, if_false, DO_SMI_CHECK); |
- // Check if the exponent half is 0x80000000. Comparing against 1 and |
- // checking for overflow is the shortest possible encoding. |
- __ cmp(FieldOperand(eax, HeapNumber::kExponentOffset), Immediate(0x1)); |
- __ j(no_overflow, if_false); |
- __ cmp(FieldOperand(eax, HeapNumber::kMantissaOffset), Immediate(0x0)); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(equal, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsArray(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- __ JumpIfSmi(eax, if_false); |
- __ CmpObjectType(eax, JS_ARRAY_TYPE, ebx); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(equal, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsTypedArray(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, &if_true, |
- &if_false, &fall_through); |
- |
- __ JumpIfSmi(eax, if_false); |
- __ CmpObjectType(eax, JS_TYPED_ARRAY_TYPE, ebx); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(equal, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsRegExp(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- __ JumpIfSmi(eax, if_false); |
- __ CmpObjectType(eax, JS_REGEXP_TYPE, ebx); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(equal, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsJSProxy(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, &if_true, |
- &if_false, &fall_through); |
- |
- __ JumpIfSmi(eax, if_false); |
- Register map = ebx; |
- __ mov(map, FieldOperand(eax, HeapObject::kMapOffset)); |
- __ CmpInstanceType(map, FIRST_JS_PROXY_TYPE); |
- __ j(less, if_false); |
- __ CmpInstanceType(map, LAST_JS_PROXY_TYPE); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(less_equal, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsConstructCall(CallRuntime* expr) { |
- DCHECK(expr->arguments()->length() == 0); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- // Get the frame pointer for the calling frame. |
- __ mov(eax, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
- |
- // Skip the arguments adaptor frame if it exists. |
- Label check_frame_marker; |
- __ cmp(Operand(eax, StandardFrameConstants::kContextOffset), |
- Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
- __ j(not_equal, &check_frame_marker); |
- __ mov(eax, Operand(eax, StandardFrameConstants::kCallerFPOffset)); |
- |
- // Check the marker in the calling frame. |
- __ bind(&check_frame_marker); |
- __ cmp(Operand(eax, StandardFrameConstants::kMarkerOffset), |
- Immediate(Smi::FromInt(StackFrame::CONSTRUCT))); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(equal, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitObjectEquals(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 2); |
- |
- // Load the two objects into registers and perform the comparison. |
- VisitForStackValue(args->at(0)); |
- VisitForAccumulatorValue(args->at(1)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- __ pop(ebx); |
- __ cmp(eax, ebx); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(equal, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitArguments(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- // ArgumentsAccessStub expects the key in edx and the formal |
- // parameter count in eax. |
- VisitForAccumulatorValue(args->at(0)); |
- __ mov(edx, eax); |
- __ Move(eax, Immediate(Smi::FromInt(info_->scope()->num_parameters()))); |
- ArgumentsAccessStub stub(isolate(), ArgumentsAccessStub::READ_ELEMENT); |
- __ CallStub(&stub); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitArgumentsLength(CallRuntime* expr) { |
- DCHECK(expr->arguments()->length() == 0); |
- |
- Label exit; |
- // Get the number of formal parameters. |
- __ Move(eax, Immediate(Smi::FromInt(info_->scope()->num_parameters()))); |
- |
- // Check if the calling frame is an arguments adaptor frame. |
- __ mov(ebx, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
- __ cmp(Operand(ebx, StandardFrameConstants::kContextOffset), |
- Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
- __ j(not_equal, &exit); |
- |
- // Arguments adaptor case: Read the arguments length from the |
- // adaptor frame. |
- __ mov(eax, Operand(ebx, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
- |
- __ bind(&exit); |
- __ AssertSmi(eax); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitClassOf(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- Label done, null, function, non_function_constructor; |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- // If the object is a smi, we return null. |
- __ JumpIfSmi(eax, &null); |
- |
- // Check that the object is a JS object but take special care of JS |
- // functions to make sure they have 'Function' as their class. |
- // Assume that there are only two callable types, and one of them is at |
- // either end of the type range for JS object types. Saves extra comparisons. |
- STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
- __ CmpObjectType(eax, FIRST_SPEC_OBJECT_TYPE, eax); |
- // Map is now in eax. |
- __ j(below, &null); |
- STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == |
- FIRST_SPEC_OBJECT_TYPE + 1); |
- __ j(equal, &function); |
- |
- __ CmpInstanceType(eax, LAST_SPEC_OBJECT_TYPE); |
- STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == |
- LAST_SPEC_OBJECT_TYPE - 1); |
- __ j(equal, &function); |
- // Assume that there is no larger type. |
- STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == LAST_TYPE - 1); |
- |
- // Check if the constructor in the map is a JS function. |
- __ GetMapConstructor(eax, eax, ebx); |
- __ CmpInstanceType(ebx, JS_FUNCTION_TYPE); |
- __ j(not_equal, &non_function_constructor); |
- |
- // eax now contains the constructor function. Grab the |
- // instance class name from there. |
- __ mov(eax, FieldOperand(eax, JSFunction::kSharedFunctionInfoOffset)); |
- __ mov(eax, FieldOperand(eax, SharedFunctionInfo::kInstanceClassNameOffset)); |
- __ jmp(&done); |
- |
- // Functions have class 'Function'. |
- __ bind(&function); |
- __ mov(eax, isolate()->factory()->Function_string()); |
- __ jmp(&done); |
- |
- // Objects with a non-function constructor have class 'Object'. |
- __ bind(&non_function_constructor); |
- __ mov(eax, isolate()->factory()->Object_string()); |
- __ jmp(&done); |
- |
- // Non-JS objects have class null. |
- __ bind(&null); |
- __ mov(eax, isolate()->factory()->null_value()); |
- |
- // All done. |
- __ bind(&done); |
- |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitValueOf(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); // Load the object. |
- |
- Label done; |
- // If the object is a smi return the object. |
- __ JumpIfSmi(eax, &done, Label::kNear); |
- // If the object is not a value type, return the object. |
- __ CmpObjectType(eax, JS_VALUE_TYPE, ebx); |
- __ j(not_equal, &done, Label::kNear); |
- __ mov(eax, FieldOperand(eax, JSValue::kValueOffset)); |
- |
- __ bind(&done); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitIsDate(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK_EQ(1, args->length()); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = nullptr; |
- Label* if_false = nullptr; |
- Label* fall_through = nullptr; |
- context()->PrepareTest(&materialize_true, &materialize_false, &if_true, |
- &if_false, &fall_through); |
- |
- __ JumpIfSmi(eax, if_false); |
- __ CmpObjectType(eax, JS_DATE_TYPE, ebx); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(equal, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitDateField(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 2); |
- DCHECK_NOT_NULL(args->at(1)->AsLiteral()); |
- Smi* index = Smi::cast(*(args->at(1)->AsLiteral()->value())); |
- |
- VisitForAccumulatorValue(args->at(0)); // Load the object. |
- |
- Register object = eax; |
- Register result = eax; |
- Register scratch = ecx; |
- |
- if (index->value() == 0) { |
- __ mov(result, FieldOperand(object, JSDate::kValueOffset)); |
- } else { |
- Label runtime, done; |
- if (index->value() < JSDate::kFirstUncachedField) { |
- ExternalReference stamp = ExternalReference::date_cache_stamp(isolate()); |
- __ mov(scratch, Operand::StaticVariable(stamp)); |
- __ cmp(scratch, FieldOperand(object, JSDate::kCacheStampOffset)); |
- __ j(not_equal, &runtime, Label::kNear); |
- __ mov(result, FieldOperand(object, JSDate::kValueOffset + |
- kPointerSize * index->value())); |
- __ jmp(&done, Label::kNear); |
- } |
- __ bind(&runtime); |
- __ PrepareCallCFunction(2, scratch); |
- __ mov(Operand(esp, 0), object); |
- __ mov(Operand(esp, 1 * kPointerSize), Immediate(index)); |
- __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2); |
- __ bind(&done); |
- } |
- |
- context()->Plug(result); |
-} |
- |
- |
-void FullCodeGenerator::EmitOneByteSeqStringSetChar(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK_EQ(3, args->length()); |
- |
- Register string = eax; |
- Register index = ebx; |
- Register value = ecx; |
- |
- VisitForStackValue(args->at(0)); // index |
- VisitForStackValue(args->at(1)); // value |
- VisitForAccumulatorValue(args->at(2)); // string |
- |
- __ pop(value); |
- __ pop(index); |
- |
- if (FLAG_debug_code) { |
- __ test(value, Immediate(kSmiTagMask)); |
- __ Check(zero, kNonSmiValue); |
- __ test(index, Immediate(kSmiTagMask)); |
- __ Check(zero, kNonSmiValue); |
- } |
- |
- __ SmiUntag(value); |
- __ SmiUntag(index); |
- |
- if (FLAG_debug_code) { |
- static const uint32_t one_byte_seq_type = kSeqStringTag | kOneByteStringTag; |
- __ EmitSeqStringSetCharCheck(string, index, value, one_byte_seq_type); |
- } |
- |
- __ mov_b(FieldOperand(string, index, times_1, SeqOneByteString::kHeaderSize), |
- value); |
- context()->Plug(string); |
-} |
- |
- |
-void FullCodeGenerator::EmitTwoByteSeqStringSetChar(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK_EQ(3, args->length()); |
- |
- Register string = eax; |
- Register index = ebx; |
- Register value = ecx; |
- |
- VisitForStackValue(args->at(0)); // index |
- VisitForStackValue(args->at(1)); // value |
- VisitForAccumulatorValue(args->at(2)); // string |
- __ pop(value); |
- __ pop(index); |
- |
- if (FLAG_debug_code) { |
- __ test(value, Immediate(kSmiTagMask)); |
- __ Check(zero, kNonSmiValue); |
- __ test(index, Immediate(kSmiTagMask)); |
- __ Check(zero, kNonSmiValue); |
- __ SmiUntag(index); |
- static const uint32_t two_byte_seq_type = kSeqStringTag | kTwoByteStringTag; |
- __ EmitSeqStringSetCharCheck(string, index, value, two_byte_seq_type); |
- __ SmiTag(index); |
- } |
- |
- __ SmiUntag(value); |
- // No need to untag a smi for two-byte addressing. |
- __ mov_w(FieldOperand(string, index, times_1, SeqTwoByteString::kHeaderSize), |
- value); |
- context()->Plug(string); |
-} |
- |
- |
-void FullCodeGenerator::EmitSetValueOf(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 2); |
- |
- VisitForStackValue(args->at(0)); // Load the object. |
- VisitForAccumulatorValue(args->at(1)); // Load the value. |
- __ pop(ebx); // eax = value. ebx = object. |
- |
- Label done; |
- // If the object is a smi, return the value. |
- __ JumpIfSmi(ebx, &done, Label::kNear); |
- |
- // If the object is not a value type, return the value. |
- __ CmpObjectType(ebx, JS_VALUE_TYPE, ecx); |
- __ j(not_equal, &done, Label::kNear); |
- |
- // Store the value. |
- __ mov(FieldOperand(ebx, JSValue::kValueOffset), eax); |
- |
- // Update the write barrier. Save the value as it will be |
- // overwritten by the write barrier code and is needed afterward. |
- __ mov(edx, eax); |
- __ RecordWriteField(ebx, JSValue::kValueOffset, edx, ecx, kDontSaveFPRegs); |
- |
- __ bind(&done); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitNumberToString(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK_EQ(args->length(), 1); |
- |
- // Load the argument into eax and call the stub. |
- VisitForAccumulatorValue(args->at(0)); |
- |
- NumberToStringStub stub(isolate()); |
- __ CallStub(&stub); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitStringCharFromCode(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- Label done; |
- StringCharFromCodeGenerator generator(eax, ebx); |
- generator.GenerateFast(masm_); |
- __ jmp(&done); |
- |
- NopRuntimeCallHelper call_helper; |
- generator.GenerateSlow(masm_, call_helper); |
- |
- __ bind(&done); |
- context()->Plug(ebx); |
-} |
- |
- |
-void FullCodeGenerator::EmitStringCharCodeAt(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 2); |
- |
- VisitForStackValue(args->at(0)); |
- VisitForAccumulatorValue(args->at(1)); |
- |
- Register object = ebx; |
- Register index = eax; |
- Register result = edx; |
- |
- __ pop(object); |
- |
- Label need_conversion; |
- Label index_out_of_range; |
- Label done; |
- StringCharCodeAtGenerator generator(object, |
- index, |
- result, |
- &need_conversion, |
- &need_conversion, |
- &index_out_of_range, |
- STRING_INDEX_IS_NUMBER); |
- generator.GenerateFast(masm_); |
- __ jmp(&done); |
- |
- __ bind(&index_out_of_range); |
- // When the index is out of range, the spec requires us to return |
- // NaN. |
- __ Move(result, Immediate(isolate()->factory()->nan_value())); |
- __ jmp(&done); |
- |
- __ bind(&need_conversion); |
- // Move the undefined value into the result register, which will |
- // trigger conversion. |
- __ Move(result, Immediate(isolate()->factory()->undefined_value())); |
- __ jmp(&done); |
- |
- NopRuntimeCallHelper call_helper; |
- generator.GenerateSlow(masm_, NOT_PART_OF_IC_HANDLER, call_helper); |
- |
- __ bind(&done); |
- context()->Plug(result); |
-} |
- |
- |
-void FullCodeGenerator::EmitStringCharAt(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 2); |
- |
- VisitForStackValue(args->at(0)); |
- VisitForAccumulatorValue(args->at(1)); |
- |
- Register object = ebx; |
- Register index = eax; |
- Register scratch = edx; |
- Register result = eax; |
- |
- __ pop(object); |
- |
- Label need_conversion; |
- Label index_out_of_range; |
- Label done; |
- StringCharAtGenerator generator(object, |
- index, |
- scratch, |
- result, |
- &need_conversion, |
- &need_conversion, |
- &index_out_of_range, |
- STRING_INDEX_IS_NUMBER); |
- generator.GenerateFast(masm_); |
- __ jmp(&done); |
- |
- __ bind(&index_out_of_range); |
- // When the index is out of range, the spec requires us to return |
- // the empty string. |
- __ Move(result, Immediate(isolate()->factory()->empty_string())); |
- __ jmp(&done); |
- |
- __ bind(&need_conversion); |
- // Move smi zero into the result register, which will trigger |
- // conversion. |
- __ Move(result, Immediate(Smi::FromInt(0))); |
- __ jmp(&done); |
- |
- NopRuntimeCallHelper call_helper; |
- generator.GenerateSlow(masm_, NOT_PART_OF_IC_HANDLER, call_helper); |
- |
- __ bind(&done); |
- context()->Plug(result); |
-} |
- |
- |
-void FullCodeGenerator::EmitStringAdd(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK_EQ(2, args->length()); |
- VisitForStackValue(args->at(0)); |
- VisitForAccumulatorValue(args->at(1)); |
- |
- __ pop(edx); |
- StringAddStub stub(isolate(), STRING_ADD_CHECK_BOTH, NOT_TENURED); |
- __ CallStub(&stub); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitCallFunction(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() >= 2); |
- |
- int arg_count = args->length() - 2; // 2 ~ receiver and function. |
- for (int i = 0; i < arg_count + 1; ++i) { |
- VisitForStackValue(args->at(i)); |
- } |
- VisitForAccumulatorValue(args->last()); // Function. |
- |
- Label runtime, done; |
- // Check for non-function argument (including proxy). |
- __ JumpIfSmi(eax, &runtime); |
- __ CmpObjectType(eax, JS_FUNCTION_TYPE, ebx); |
- __ j(not_equal, &runtime); |
- |
- // InvokeFunction requires the function in edi. Move it in there. |
- __ mov(edi, result_register()); |
- ParameterCount count(arg_count); |
- __ InvokeFunction(edi, count, CALL_FUNCTION, NullCallWrapper()); |
- __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
- __ jmp(&done); |
- |
- __ bind(&runtime); |
- __ push(eax); |
- __ CallRuntime(Runtime::kCall, args->length()); |
- __ bind(&done); |
- |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitDefaultConstructorCallSuper(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 2); |
- |
- // new.target |
- VisitForStackValue(args->at(0)); |
- |
- // .this_function |
- VisitForStackValue(args->at(1)); |
- __ CallRuntime(Runtime::kGetPrototype, 1); |
- __ push(result_register()); |
- |
- // Load original constructor into ecx. |
- __ mov(ecx, Operand(esp, 1 * kPointerSize)); |
- |
- // Check if the calling frame is an arguments adaptor frame. |
- Label adaptor_frame, args_set_up, runtime; |
- __ mov(edx, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
- __ mov(ebx, Operand(edx, StandardFrameConstants::kContextOffset)); |
- __ cmp(ebx, Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
- __ j(equal, &adaptor_frame); |
- // default constructor has no arguments, so no adaptor frame means no args. |
- __ mov(eax, Immediate(0)); |
- __ jmp(&args_set_up); |
- |
- // Copy arguments from adaptor frame. |
- { |
- __ bind(&adaptor_frame); |
- __ mov(ebx, Operand(edx, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
- __ SmiUntag(ebx); |
- |
- __ mov(eax, ebx); |
- __ lea(edx, Operand(edx, ebx, times_pointer_size, |
- StandardFrameConstants::kCallerSPOffset)); |
- Label loop; |
- __ bind(&loop); |
- __ push(Operand(edx, -1 * kPointerSize)); |
- __ sub(edx, Immediate(kPointerSize)); |
- __ dec(ebx); |
- __ j(not_zero, &loop); |
- } |
- |
- __ bind(&args_set_up); |
- |
- __ mov(edi, Operand(esp, eax, times_pointer_size, 0)); |
- __ mov(ebx, Immediate(isolate()->factory()->undefined_value())); |
- CallConstructStub stub(isolate(), SUPER_CONSTRUCTOR_CALL); |
- __ call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL); |
- |
- __ Drop(1); |
- |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitRegExpConstructResult(CallRuntime* expr) { |
- // Load the arguments on the stack and call the stub. |
- RegExpConstructResultStub stub(isolate()); |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 3); |
- VisitForStackValue(args->at(0)); |
- VisitForStackValue(args->at(1)); |
- VisitForAccumulatorValue(args->at(2)); |
- __ pop(ebx); |
- __ pop(ecx); |
- __ CallStub(&stub); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitGetFromCache(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK_EQ(2, args->length()); |
- |
- DCHECK_NOT_NULL(args->at(0)->AsLiteral()); |
- int cache_id = Smi::cast(*(args->at(0)->AsLiteral()->value()))->value(); |
- |
- Handle<FixedArray> jsfunction_result_caches( |
- isolate()->native_context()->jsfunction_result_caches()); |
- if (jsfunction_result_caches->length() <= cache_id) { |
- __ Abort(kAttemptToUseUndefinedCache); |
- __ mov(eax, isolate()->factory()->undefined_value()); |
- context()->Plug(eax); |
- return; |
- } |
- |
- VisitForAccumulatorValue(args->at(1)); |
- |
- Register key = eax; |
- Register cache = ebx; |
- Register tmp = ecx; |
- __ mov(cache, ContextOperand(esi, Context::GLOBAL_OBJECT_INDEX)); |
- __ mov(cache, |
- FieldOperand(cache, GlobalObject::kNativeContextOffset)); |
- __ mov(cache, ContextOperand(cache, Context::JSFUNCTION_RESULT_CACHES_INDEX)); |
- __ mov(cache, |
- FieldOperand(cache, FixedArray::OffsetOfElementAt(cache_id))); |
- |
- Label done, not_found; |
- STATIC_ASSERT(kSmiTag == 0 && kSmiTagSize == 1); |
- __ mov(tmp, FieldOperand(cache, JSFunctionResultCache::kFingerOffset)); |
- // tmp now holds finger offset as a smi. |
- __ cmp(key, FixedArrayElementOperand(cache, tmp)); |
- __ j(not_equal, ¬_found); |
- |
- __ mov(eax, FixedArrayElementOperand(cache, tmp, 1)); |
- __ jmp(&done); |
- |
- __ bind(¬_found); |
- // Call runtime to perform the lookup. |
- __ push(cache); |
- __ push(key); |
- __ CallRuntime(Runtime::kGetFromCacheRT, 2); |
- |
- __ bind(&done); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- |
- VisitForAccumulatorValue(args->at(0)); |
- |
- __ AssertString(eax); |
- |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- __ test(FieldOperand(eax, String::kHashFieldOffset), |
- Immediate(String::kContainsCachedArrayIndexMask)); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- Split(zero, if_true, if_false, fall_through); |
- |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitGetCachedArrayIndex(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 1); |
- VisitForAccumulatorValue(args->at(0)); |
- |
- __ AssertString(eax); |
- |
- __ mov(eax, FieldOperand(eax, String::kHashFieldOffset)); |
- __ IndexFromHash(eax, eax); |
- |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitFastOneByteArrayJoin(CallRuntime* expr) { |
- Label bailout, done, one_char_separator, long_separator, |
- non_trivial_array, not_size_one_array, loop, |
- loop_1, loop_1_condition, loop_2, loop_2_entry, loop_3, loop_3_entry; |
- |
- ZoneList<Expression*>* args = expr->arguments(); |
- DCHECK(args->length() == 2); |
- // We will leave the separator on the stack until the end of the function. |
- VisitForStackValue(args->at(1)); |
- // Load this to eax (= array) |
- VisitForAccumulatorValue(args->at(0)); |
- // All aliases of the same register have disjoint lifetimes. |
- Register array = eax; |
- Register elements = no_reg; // Will be eax. |
- |
- Register index = edx; |
- |
- Register string_length = ecx; |
- |
- Register string = esi; |
- |
- Register scratch = ebx; |
- |
- Register array_length = edi; |
- Register result_pos = no_reg; // Will be edi. |
- |
- // Separator operand is already pushed. |
- Operand separator_operand = Operand(esp, 2 * kPointerSize); |
- Operand result_operand = Operand(esp, 1 * kPointerSize); |
- Operand array_length_operand = Operand(esp, 0); |
- __ sub(esp, Immediate(2 * kPointerSize)); |
- __ cld(); |
- // Check that the array is a JSArray |
- __ JumpIfSmi(array, &bailout); |
- __ CmpObjectType(array, JS_ARRAY_TYPE, scratch); |
- __ j(not_equal, &bailout); |
- |
- // Check that the array has fast elements. |
- __ CheckFastElements(scratch, &bailout); |
- |
- // If the array has length zero, return the empty string. |
- __ mov(array_length, FieldOperand(array, JSArray::kLengthOffset)); |
- __ SmiUntag(array_length); |
- __ j(not_zero, &non_trivial_array); |
- __ mov(result_operand, isolate()->factory()->empty_string()); |
- __ jmp(&done); |
- |
- // Save the array length. |
- __ bind(&non_trivial_array); |
- __ mov(array_length_operand, array_length); |
- |
- // Save the FixedArray containing array's elements. |
- // End of array's live range. |
- elements = array; |
- __ mov(elements, FieldOperand(array, JSArray::kElementsOffset)); |
- array = no_reg; |
- |
- |
- // Check that all array elements are sequential one-byte strings, and |
- // accumulate the sum of their lengths, as a smi-encoded value. |
- __ Move(index, Immediate(0)); |
- __ Move(string_length, Immediate(0)); |
- // Loop condition: while (index < length). |
- // Live loop registers: index, array_length, string, |
- // scratch, string_length, elements. |
- if (generate_debug_code_) { |
- __ cmp(index, array_length); |
- __ Assert(less, kNoEmptyArraysHereInEmitFastOneByteArrayJoin); |
- } |
- __ bind(&loop); |
- __ mov(string, FieldOperand(elements, |
- index, |
- times_pointer_size, |
- FixedArray::kHeaderSize)); |
- __ JumpIfSmi(string, &bailout); |
- __ mov(scratch, FieldOperand(string, HeapObject::kMapOffset)); |
- __ movzx_b(scratch, FieldOperand(scratch, Map::kInstanceTypeOffset)); |
- __ and_(scratch, Immediate( |
- kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask)); |
- __ cmp(scratch, kStringTag | kOneByteStringTag | kSeqStringTag); |
- __ j(not_equal, &bailout); |
- __ add(string_length, |
- FieldOperand(string, SeqOneByteString::kLengthOffset)); |
- __ j(overflow, &bailout); |
- __ add(index, Immediate(1)); |
- __ cmp(index, array_length); |
- __ j(less, &loop); |
- |
- // If array_length is 1, return elements[0], a string. |
- __ cmp(array_length, 1); |
- __ j(not_equal, ¬_size_one_array); |
- __ mov(scratch, FieldOperand(elements, FixedArray::kHeaderSize)); |
- __ mov(result_operand, scratch); |
- __ jmp(&done); |
- |
- __ bind(¬_size_one_array); |
- |
- // End of array_length live range. |
- result_pos = array_length; |
- array_length = no_reg; |
- |
- // Live registers: |
- // string_length: Sum of string lengths, as a smi. |
- // elements: FixedArray of strings. |
- |
- // Check that the separator is a flat one-byte string. |
- __ mov(string, separator_operand); |
- __ JumpIfSmi(string, &bailout); |
- __ mov(scratch, FieldOperand(string, HeapObject::kMapOffset)); |
- __ movzx_b(scratch, FieldOperand(scratch, Map::kInstanceTypeOffset)); |
- __ and_(scratch, Immediate( |
- kIsNotStringMask | kStringEncodingMask | kStringRepresentationMask)); |
- __ cmp(scratch, kStringTag | kOneByteStringTag | kSeqStringTag); |
- __ j(not_equal, &bailout); |
- |
- // Add (separator length times array_length) - separator length |
- // to string_length. |
- __ mov(scratch, separator_operand); |
- __ mov(scratch, FieldOperand(scratch, SeqOneByteString::kLengthOffset)); |
- __ sub(string_length, scratch); // May be negative, temporarily. |
- __ imul(scratch, array_length_operand); |
- __ j(overflow, &bailout); |
- __ add(string_length, scratch); |
- __ j(overflow, &bailout); |
- |
- __ shr(string_length, 1); |
- // Live registers and stack values: |
- // string_length |
- // elements |
- __ AllocateOneByteString(result_pos, string_length, scratch, index, string, |
- &bailout); |
- __ mov(result_operand, result_pos); |
- __ lea(result_pos, FieldOperand(result_pos, SeqOneByteString::kHeaderSize)); |
- |
- |
- __ mov(string, separator_operand); |
- __ cmp(FieldOperand(string, SeqOneByteString::kLengthOffset), |
- Immediate(Smi::FromInt(1))); |
- __ j(equal, &one_char_separator); |
- __ j(greater, &long_separator); |
- |
- |
- // Empty separator case |
- __ mov(index, Immediate(0)); |
- __ jmp(&loop_1_condition); |
- // Loop condition: while (index < length). |
- __ bind(&loop_1); |
- // Each iteration of the loop concatenates one string to the result. |
- // Live values in registers: |
- // index: which element of the elements array we are adding to the result. |
- // result_pos: the position to which we are currently copying characters. |
- // elements: the FixedArray of strings we are joining. |
- |
- // Get string = array[index]. |
- __ mov(string, FieldOperand(elements, index, |
- times_pointer_size, |
- FixedArray::kHeaderSize)); |
- __ mov(string_length, |
- FieldOperand(string, String::kLengthOffset)); |
- __ shr(string_length, 1); |
- __ lea(string, |
- FieldOperand(string, SeqOneByteString::kHeaderSize)); |
- __ CopyBytes(string, result_pos, string_length, scratch); |
- __ add(index, Immediate(1)); |
- __ bind(&loop_1_condition); |
- __ cmp(index, array_length_operand); |
- __ j(less, &loop_1); // End while (index < length). |
- __ jmp(&done); |
- |
- |
- |
- // One-character separator case |
- __ bind(&one_char_separator); |
- // Replace separator with its one-byte character value. |
- __ mov_b(scratch, FieldOperand(string, SeqOneByteString::kHeaderSize)); |
- __ mov_b(separator_operand, scratch); |
- |
- __ Move(index, Immediate(0)); |
- // Jump into the loop after the code that copies the separator, so the first |
- // element is not preceded by a separator |
- __ jmp(&loop_2_entry); |
- // Loop condition: while (index < length). |
- __ bind(&loop_2); |
- // Each iteration of the loop concatenates one string to the result. |
- // Live values in registers: |
- // index: which element of the elements array we are adding to the result. |
- // result_pos: the position to which we are currently copying characters. |
- |
- // Copy the separator character to the result. |
- __ mov_b(scratch, separator_operand); |
- __ mov_b(Operand(result_pos, 0), scratch); |
- __ inc(result_pos); |
- |
- __ bind(&loop_2_entry); |
- // Get string = array[index]. |
- __ mov(string, FieldOperand(elements, index, |
- times_pointer_size, |
- FixedArray::kHeaderSize)); |
- __ mov(string_length, |
- FieldOperand(string, String::kLengthOffset)); |
- __ shr(string_length, 1); |
- __ lea(string, |
- FieldOperand(string, SeqOneByteString::kHeaderSize)); |
- __ CopyBytes(string, result_pos, string_length, scratch); |
- __ add(index, Immediate(1)); |
- |
- __ cmp(index, array_length_operand); |
- __ j(less, &loop_2); // End while (index < length). |
- __ jmp(&done); |
- |
- |
- // Long separator case (separator is more than one character). |
- __ bind(&long_separator); |
- |
- __ Move(index, Immediate(0)); |
- // Jump into the loop after the code that copies the separator, so the first |
- // element is not preceded by a separator |
- __ jmp(&loop_3_entry); |
- // Loop condition: while (index < length). |
- __ bind(&loop_3); |
- // Each iteration of the loop concatenates one string to the result. |
- // Live values in registers: |
- // index: which element of the elements array we are adding to the result. |
- // result_pos: the position to which we are currently copying characters. |
- |
- // Copy the separator to the result. |
- __ mov(string, separator_operand); |
- __ mov(string_length, |
- FieldOperand(string, String::kLengthOffset)); |
- __ shr(string_length, 1); |
- __ lea(string, |
- FieldOperand(string, SeqOneByteString::kHeaderSize)); |
- __ CopyBytes(string, result_pos, string_length, scratch); |
- |
- __ bind(&loop_3_entry); |
- // Get string = array[index]. |
- __ mov(string, FieldOperand(elements, index, |
- times_pointer_size, |
- FixedArray::kHeaderSize)); |
- __ mov(string_length, |
- FieldOperand(string, String::kLengthOffset)); |
- __ shr(string_length, 1); |
- __ lea(string, |
- FieldOperand(string, SeqOneByteString::kHeaderSize)); |
- __ CopyBytes(string, result_pos, string_length, scratch); |
- __ add(index, Immediate(1)); |
- |
- __ cmp(index, array_length_operand); |
- __ j(less, &loop_3); // End while (index < length). |
- __ jmp(&done); |
- |
- |
- __ bind(&bailout); |
- __ mov(result_operand, isolate()->factory()->undefined_value()); |
- __ bind(&done); |
- __ mov(eax, result_operand); |
- // Drop temp values from the stack, and restore context register. |
- __ add(esp, Immediate(3 * kPointerSize)); |
- |
- __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitDebugIsActive(CallRuntime* expr) { |
- DCHECK(expr->arguments()->length() == 0); |
- ExternalReference debug_is_active = |
- ExternalReference::debug_is_active_address(isolate()); |
- __ movzx_b(eax, Operand::StaticVariable(debug_is_active)); |
- __ SmiTag(eax); |
- context()->Plug(eax); |
-} |
- |
- |
-void FullCodeGenerator::EmitLoadJSRuntimeFunction(CallRuntime* expr) { |
- // Push the builtins object as receiver. |
- __ mov(eax, GlobalObjectOperand()); |
- __ push(FieldOperand(eax, GlobalObject::kBuiltinsOffset)); |
- |
- // Load the function from the receiver. |
- __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, 0)); |
- __ mov(LoadDescriptor::NameRegister(), Immediate(expr->name())); |
- __ mov(LoadDescriptor::SlotRegister(), |
- Immediate(SmiFromSlot(expr->CallRuntimeFeedbackSlot()))); |
- CallLoadIC(NOT_INSIDE_TYPEOF); |
-} |
- |
- |
-void FullCodeGenerator::EmitCallJSRuntimeFunction(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- int arg_count = args->length(); |
- |
- SetCallPosition(expr, arg_count); |
- CallFunctionStub stub(isolate(), arg_count, NO_CALL_FUNCTION_FLAGS); |
- __ mov(edi, Operand(esp, (arg_count + 1) * kPointerSize)); |
- __ CallStub(&stub); |
-} |
- |
- |
-void FullCodeGenerator::VisitCallRuntime(CallRuntime* expr) { |
- ZoneList<Expression*>* args = expr->arguments(); |
- int arg_count = args->length(); |
- |
- if (expr->is_jsruntime()) { |
- Comment cmnt(masm_, "[ CallRuntime"); |
- EmitLoadJSRuntimeFunction(expr); |
- |
- // Push the target function under the receiver. |
- __ push(Operand(esp, 0)); |
- __ mov(Operand(esp, kPointerSize), eax); |
- |
- // Push the arguments ("left-to-right"). |
- for (int i = 0; i < arg_count; i++) { |
- VisitForStackValue(args->at(i)); |
- } |
- |
- PrepareForBailoutForId(expr->CallId(), NO_REGISTERS); |
- EmitCallJSRuntimeFunction(expr); |
- |
- // Restore context register. |
- __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
- context()->DropAndPlug(1, eax); |
- |
- } else { |
- const Runtime::Function* function = expr->function(); |
- switch (function->function_id) { |
-#define CALL_INTRINSIC_GENERATOR(Name) \ |
- case Runtime::kInline##Name: { \ |
- Comment cmnt(masm_, "[ Inline" #Name); \ |
- return Emit##Name(expr); \ |
- } |
- FOR_EACH_FULL_CODE_INTRINSIC(CALL_INTRINSIC_GENERATOR) |
-#undef CALL_INTRINSIC_GENERATOR |
- default: { |
- Comment cmnt(masm_, "[ CallRuntime for unhandled intrinsic"); |
- // Push the arguments ("left-to-right"). |
- for (int i = 0; i < arg_count; i++) { |
- VisitForStackValue(args->at(i)); |
- } |
- |
- // Call the C runtime function. |
- PrepareForBailoutForId(expr->CallId(), NO_REGISTERS); |
- __ CallRuntime(expr->function(), arg_count); |
- context()->Plug(eax); |
- } |
- } |
- } |
-} |
- |
- |
-void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) { |
- switch (expr->op()) { |
- case Token::DELETE: { |
- Comment cmnt(masm_, "[ UnaryOperation (DELETE)"); |
- Property* property = expr->expression()->AsProperty(); |
- VariableProxy* proxy = expr->expression()->AsVariableProxy(); |
- |
- if (property != NULL) { |
- VisitForStackValue(property->obj()); |
- VisitForStackValue(property->key()); |
- __ push(Immediate(Smi::FromInt(language_mode()))); |
- __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION); |
- context()->Plug(eax); |
- } else if (proxy != NULL) { |
- Variable* var = proxy->var(); |
- // Delete of an unqualified identifier is disallowed in strict mode but |
- // "delete this" is allowed. |
- bool is_this = var->HasThisName(isolate()); |
- DCHECK(is_sloppy(language_mode()) || is_this); |
- if (var->IsUnallocatedOrGlobalSlot()) { |
- __ push(GlobalObjectOperand()); |
- __ push(Immediate(var->name())); |
- __ push(Immediate(Smi::FromInt(SLOPPY))); |
- __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION); |
- context()->Plug(eax); |
- } else if (var->IsStackAllocated() || var->IsContextSlot()) { |
- // Result of deleting non-global variables is false. 'this' is |
- // not really a variable, though we implement it as one. The |
- // subexpression does not have side effects. |
- context()->Plug(is_this); |
- } else { |
- // Non-global variable. Call the runtime to try to delete from the |
- // context where the variable was introduced. |
- __ push(context_register()); |
- __ push(Immediate(var->name())); |
- __ CallRuntime(Runtime::kDeleteLookupSlot, 2); |
- context()->Plug(eax); |
- } |
- } else { |
- // Result of deleting non-property, non-variable reference is true. |
- // The subexpression may have side effects. |
- VisitForEffect(expr->expression()); |
- context()->Plug(true); |
- } |
- break; |
- } |
- |
- case Token::VOID: { |
- Comment cmnt(masm_, "[ UnaryOperation (VOID)"); |
- VisitForEffect(expr->expression()); |
- context()->Plug(isolate()->factory()->undefined_value()); |
- break; |
- } |
- |
- case Token::NOT: { |
- Comment cmnt(masm_, "[ UnaryOperation (NOT)"); |
- if (context()->IsEffect()) { |
- // Unary NOT has no side effects so it's only necessary to visit the |
- // subexpression. Match the optimizing compiler by not branching. |
- VisitForEffect(expr->expression()); |
- } else if (context()->IsTest()) { |
- const TestContext* test = TestContext::cast(context()); |
- // The labels are swapped for the recursive call. |
- VisitForControl(expr->expression(), |
- test->false_label(), |
- test->true_label(), |
- test->fall_through()); |
- context()->Plug(test->true_label(), test->false_label()); |
- } else { |
- // We handle value contexts explicitly rather than simply visiting |
- // for control and plugging the control flow into the context, |
- // because we need to prepare a pair of extra administrative AST ids |
- // for the optimizing compiler. |
- DCHECK(context()->IsAccumulatorValue() || context()->IsStackValue()); |
- Label materialize_true, materialize_false, done; |
- VisitForControl(expr->expression(), |
- &materialize_false, |
- &materialize_true, |
- &materialize_true); |
- __ bind(&materialize_true); |
- PrepareForBailoutForId(expr->MaterializeTrueId(), NO_REGISTERS); |
- if (context()->IsAccumulatorValue()) { |
- __ mov(eax, isolate()->factory()->true_value()); |
- } else { |
- __ Push(isolate()->factory()->true_value()); |
- } |
- __ jmp(&done, Label::kNear); |
- __ bind(&materialize_false); |
- PrepareForBailoutForId(expr->MaterializeFalseId(), NO_REGISTERS); |
- if (context()->IsAccumulatorValue()) { |
- __ mov(eax, isolate()->factory()->false_value()); |
- } else { |
- __ Push(isolate()->factory()->false_value()); |
- } |
- __ bind(&done); |
- } |
- break; |
- } |
- |
- case Token::TYPEOF: { |
- Comment cmnt(masm_, "[ UnaryOperation (TYPEOF)"); |
- { |
- AccumulatorValueContext context(this); |
- VisitForTypeofValue(expr->expression()); |
- } |
- __ mov(ebx, eax); |
- TypeofStub typeof_stub(isolate()); |
- __ CallStub(&typeof_stub); |
- context()->Plug(eax); |
- break; |
- } |
- |
- default: |
- UNREACHABLE(); |
- } |
-} |
- |
- |
-void FullCodeGenerator::VisitCountOperation(CountOperation* expr) { |
- DCHECK(expr->expression()->IsValidReferenceExpressionOrThis()); |
- |
- Comment cmnt(masm_, "[ CountOperation"); |
- |
- Property* prop = expr->expression()->AsProperty(); |
- LhsKind assign_type = Property::GetAssignType(prop); |
- |
- // Evaluate expression and get value. |
- if (assign_type == VARIABLE) { |
- DCHECK(expr->expression()->AsVariableProxy()->var() != NULL); |
- AccumulatorValueContext context(this); |
- EmitVariableLoad(expr->expression()->AsVariableProxy()); |
- } else { |
- // Reserve space for result of postfix operation. |
- if (expr->is_postfix() && !context()->IsEffect()) { |
- __ push(Immediate(Smi::FromInt(0))); |
- } |
- switch (assign_type) { |
- case NAMED_PROPERTY: { |
- // Put the object both on the stack and in the register. |
- VisitForStackValue(prop->obj()); |
- __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, 0)); |
- EmitNamedPropertyLoad(prop); |
- break; |
- } |
- |
- case NAMED_SUPER_PROPERTY: { |
- VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
- VisitForAccumulatorValue( |
- prop->obj()->AsSuperPropertyReference()->home_object()); |
- __ push(result_register()); |
- __ push(MemOperand(esp, kPointerSize)); |
- __ push(result_register()); |
- EmitNamedSuperPropertyLoad(prop); |
- break; |
- } |
- |
- case KEYED_SUPER_PROPERTY: { |
- VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
- VisitForStackValue( |
- prop->obj()->AsSuperPropertyReference()->home_object()); |
- VisitForAccumulatorValue(prop->key()); |
- __ push(result_register()); |
- __ push(MemOperand(esp, 2 * kPointerSize)); |
- __ push(MemOperand(esp, 2 * kPointerSize)); |
- __ push(result_register()); |
- EmitKeyedSuperPropertyLoad(prop); |
- break; |
- } |
- |
- case KEYED_PROPERTY: { |
- VisitForStackValue(prop->obj()); |
- VisitForStackValue(prop->key()); |
- __ mov(LoadDescriptor::ReceiverRegister(), |
- Operand(esp, kPointerSize)); // Object. |
- __ mov(LoadDescriptor::NameRegister(), Operand(esp, 0)); // Key. |
- EmitKeyedPropertyLoad(prop); |
- break; |
- } |
- |
- case VARIABLE: |
- UNREACHABLE(); |
- } |
- } |
- |
- // We need a second deoptimization point after loading the value |
- // in case evaluating the property load my have a side effect. |
- if (assign_type == VARIABLE) { |
- PrepareForBailout(expr->expression(), TOS_REG); |
- } else { |
- PrepareForBailoutForId(prop->LoadId(), TOS_REG); |
- } |
- |
- // Inline smi case if we are in a loop. |
- Label done, stub_call; |
- JumpPatchSite patch_site(masm_); |
- if (ShouldInlineSmiCase(expr->op())) { |
- Label slow; |
- patch_site.EmitJumpIfNotSmi(eax, &slow, Label::kNear); |
- |
- // Save result for postfix expressions. |
- if (expr->is_postfix()) { |
- if (!context()->IsEffect()) { |
- // Save the result on the stack. If we have a named or keyed property |
- // we store the result under the receiver that is currently on top |
- // of the stack. |
- switch (assign_type) { |
- case VARIABLE: |
- __ push(eax); |
- break; |
- case NAMED_PROPERTY: |
- __ mov(Operand(esp, kPointerSize), eax); |
- break; |
- case NAMED_SUPER_PROPERTY: |
- __ mov(Operand(esp, 2 * kPointerSize), eax); |
- break; |
- case KEYED_PROPERTY: |
- __ mov(Operand(esp, 2 * kPointerSize), eax); |
- break; |
- case KEYED_SUPER_PROPERTY: |
- __ mov(Operand(esp, 3 * kPointerSize), eax); |
- break; |
- } |
- } |
- } |
- |
- if (expr->op() == Token::INC) { |
- __ add(eax, Immediate(Smi::FromInt(1))); |
- } else { |
- __ sub(eax, Immediate(Smi::FromInt(1))); |
- } |
- __ j(no_overflow, &done, Label::kNear); |
- // Call stub. Undo operation first. |
- if (expr->op() == Token::INC) { |
- __ sub(eax, Immediate(Smi::FromInt(1))); |
- } else { |
- __ add(eax, Immediate(Smi::FromInt(1))); |
- } |
- __ jmp(&stub_call, Label::kNear); |
- __ bind(&slow); |
- } |
- if (!is_strong(language_mode())) { |
- ToNumberStub convert_stub(isolate()); |
- __ CallStub(&convert_stub); |
- PrepareForBailoutForId(expr->ToNumberId(), TOS_REG); |
- } |
- |
- // Save result for postfix expressions. |
- if (expr->is_postfix()) { |
- if (!context()->IsEffect()) { |
- // Save the result on the stack. If we have a named or keyed property |
- // we store the result under the receiver that is currently on top |
- // of the stack. |
- switch (assign_type) { |
- case VARIABLE: |
- __ push(eax); |
- break; |
- case NAMED_PROPERTY: |
- __ mov(Operand(esp, kPointerSize), eax); |
- break; |
- case NAMED_SUPER_PROPERTY: |
- __ mov(Operand(esp, 2 * kPointerSize), eax); |
- break; |
- case KEYED_PROPERTY: |
- __ mov(Operand(esp, 2 * kPointerSize), eax); |
- break; |
- case KEYED_SUPER_PROPERTY: |
- __ mov(Operand(esp, 3 * kPointerSize), eax); |
- break; |
- } |
- } |
- } |
- |
- SetExpressionPosition(expr); |
- |
- // Call stub for +1/-1. |
- __ bind(&stub_call); |
- __ mov(edx, eax); |
- __ mov(eax, Immediate(Smi::FromInt(1))); |
- Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), expr->binary_op(), |
- strength(language_mode())).code(); |
- CallIC(code, expr->CountBinOpFeedbackId()); |
- patch_site.EmitPatchInfo(); |
- __ bind(&done); |
- |
- if (is_strong(language_mode())) { |
- PrepareForBailoutForId(expr->ToNumberId(), TOS_REG); |
- } |
- // Store the value returned in eax. |
- switch (assign_type) { |
- case VARIABLE: |
- if (expr->is_postfix()) { |
- // Perform the assignment as if via '='. |
- { EffectContext context(this); |
- EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), |
- Token::ASSIGN, expr->CountSlot()); |
- PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
- context.Plug(eax); |
- } |
- // For all contexts except EffectContext We have the result on |
- // top of the stack. |
- if (!context()->IsEffect()) { |
- context()->PlugTOS(); |
- } |
- } else { |
- // Perform the assignment as if via '='. |
- EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), |
- Token::ASSIGN, expr->CountSlot()); |
- PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
- context()->Plug(eax); |
- } |
- break; |
- case NAMED_PROPERTY: { |
- __ mov(StoreDescriptor::NameRegister(), |
- prop->key()->AsLiteral()->value()); |
- __ pop(StoreDescriptor::ReceiverRegister()); |
- if (FLAG_vector_stores) { |
- EmitLoadStoreICSlot(expr->CountSlot()); |
- CallStoreIC(); |
- } else { |
- CallStoreIC(expr->CountStoreFeedbackId()); |
- } |
- PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
- if (expr->is_postfix()) { |
- if (!context()->IsEffect()) { |
- context()->PlugTOS(); |
- } |
- } else { |
- context()->Plug(eax); |
- } |
- break; |
- } |
- case NAMED_SUPER_PROPERTY: { |
- EmitNamedSuperPropertyStore(prop); |
- if (expr->is_postfix()) { |
- if (!context()->IsEffect()) { |
- context()->PlugTOS(); |
- } |
- } else { |
- context()->Plug(eax); |
- } |
- break; |
- } |
- case KEYED_SUPER_PROPERTY: { |
- EmitKeyedSuperPropertyStore(prop); |
- if (expr->is_postfix()) { |
- if (!context()->IsEffect()) { |
- context()->PlugTOS(); |
- } |
- } else { |
- context()->Plug(eax); |
- } |
- break; |
- } |
- case KEYED_PROPERTY: { |
- __ pop(StoreDescriptor::NameRegister()); |
- __ pop(StoreDescriptor::ReceiverRegister()); |
- Handle<Code> ic = |
- CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
- if (FLAG_vector_stores) { |
- EmitLoadStoreICSlot(expr->CountSlot()); |
- CallIC(ic); |
- } else { |
- CallIC(ic, expr->CountStoreFeedbackId()); |
- } |
- PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
- if (expr->is_postfix()) { |
- // Result is on the stack |
- if (!context()->IsEffect()) { |
- context()->PlugTOS(); |
- } |
- } else { |
- context()->Plug(eax); |
- } |
- break; |
- } |
- } |
-} |
- |
- |
-void FullCodeGenerator::EmitLiteralCompareTypeof(Expression* expr, |
- Expression* sub_expr, |
- Handle<String> check) { |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- { AccumulatorValueContext context(this); |
- VisitForTypeofValue(sub_expr); |
- } |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- |
- Factory* factory = isolate()->factory(); |
- if (String::Equals(check, factory->number_string())) { |
- __ JumpIfSmi(eax, if_true); |
- __ cmp(FieldOperand(eax, HeapObject::kMapOffset), |
- isolate()->factory()->heap_number_map()); |
- Split(equal, if_true, if_false, fall_through); |
- } else if (String::Equals(check, factory->string_string())) { |
- __ JumpIfSmi(eax, if_false); |
- __ CmpObjectType(eax, FIRST_NONSTRING_TYPE, edx); |
- __ j(above_equal, if_false); |
- // Check for undetectable objects => false. |
- __ test_b(FieldOperand(edx, Map::kBitFieldOffset), |
- 1 << Map::kIsUndetectable); |
- Split(zero, if_true, if_false, fall_through); |
- } else if (String::Equals(check, factory->symbol_string())) { |
- __ JumpIfSmi(eax, if_false); |
- __ CmpObjectType(eax, SYMBOL_TYPE, edx); |
- Split(equal, if_true, if_false, fall_through); |
- } else if (String::Equals(check, factory->float32x4_string())) { |
- __ JumpIfSmi(eax, if_false); |
- __ CmpObjectType(eax, FLOAT32X4_TYPE, edx); |
- Split(equal, if_true, if_false, fall_through); |
- } else if (String::Equals(check, factory->boolean_string())) { |
- __ cmp(eax, isolate()->factory()->true_value()); |
- __ j(equal, if_true); |
- __ cmp(eax, isolate()->factory()->false_value()); |
- Split(equal, if_true, if_false, fall_through); |
- } else if (String::Equals(check, factory->undefined_string())) { |
- __ cmp(eax, isolate()->factory()->undefined_value()); |
- __ j(equal, if_true); |
- __ JumpIfSmi(eax, if_false); |
- // Check for undetectable objects => true. |
- __ mov(edx, FieldOperand(eax, HeapObject::kMapOffset)); |
- __ movzx_b(ecx, FieldOperand(edx, Map::kBitFieldOffset)); |
- __ test(ecx, Immediate(1 << Map::kIsUndetectable)); |
- Split(not_zero, if_true, if_false, fall_through); |
- } else if (String::Equals(check, factory->function_string())) { |
- __ JumpIfSmi(eax, if_false); |
- STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
- __ CmpObjectType(eax, JS_FUNCTION_TYPE, edx); |
- __ j(equal, if_true); |
- __ CmpInstanceType(edx, JS_FUNCTION_PROXY_TYPE); |
- Split(equal, if_true, if_false, fall_through); |
- } else if (String::Equals(check, factory->object_string())) { |
- __ JumpIfSmi(eax, if_false); |
- __ cmp(eax, isolate()->factory()->null_value()); |
- __ j(equal, if_true); |
- __ CmpObjectType(eax, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE, edx); |
- __ j(below, if_false); |
- __ CmpInstanceType(edx, LAST_NONCALLABLE_SPEC_OBJECT_TYPE); |
- __ j(above, if_false); |
- // Check for undetectable objects => false. |
- __ test_b(FieldOperand(edx, Map::kBitFieldOffset), |
- 1 << Map::kIsUndetectable); |
- Split(zero, if_true, if_false, fall_through); |
- } else { |
- if (if_false != fall_through) __ jmp(if_false); |
- } |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::VisitCompareOperation(CompareOperation* expr) { |
- Comment cmnt(masm_, "[ CompareOperation"); |
- SetExpressionPosition(expr); |
- |
- // First we try a fast inlined version of the compare when one of |
- // the operands is a literal. |
- if (TryLiteralCompare(expr)) return; |
- |
- // Always perform the comparison for its control flow. Pack the result |
- // into the expression's context after the comparison is performed. |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- Token::Value op = expr->op(); |
- VisitForStackValue(expr->left()); |
- switch (op) { |
- case Token::IN: |
- VisitForStackValue(expr->right()); |
- __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION); |
- PrepareForBailoutBeforeSplit(expr, false, NULL, NULL); |
- __ cmp(eax, isolate()->factory()->true_value()); |
- Split(equal, if_true, if_false, fall_through); |
- break; |
- |
- case Token::INSTANCEOF: { |
- VisitForStackValue(expr->right()); |
- InstanceofStub stub(isolate(), InstanceofStub::kNoFlags); |
- __ CallStub(&stub); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- __ test(eax, eax); |
- // The stub returns 0 for true. |
- Split(zero, if_true, if_false, fall_through); |
- break; |
- } |
- |
- default: { |
- VisitForAccumulatorValue(expr->right()); |
- Condition cc = CompareIC::ComputeCondition(op); |
- __ pop(edx); |
- |
- bool inline_smi_code = ShouldInlineSmiCase(op); |
- JumpPatchSite patch_site(masm_); |
- if (inline_smi_code) { |
- Label slow_case; |
- __ mov(ecx, edx); |
- __ or_(ecx, eax); |
- patch_site.EmitJumpIfNotSmi(ecx, &slow_case, Label::kNear); |
- __ cmp(edx, eax); |
- Split(cc, if_true, if_false, NULL); |
- __ bind(&slow_case); |
- } |
- |
- Handle<Code> ic = CodeFactory::CompareIC( |
- isolate(), op, strength(language_mode())).code(); |
- CallIC(ic, expr->CompareOperationFeedbackId()); |
- patch_site.EmitPatchInfo(); |
- |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- __ test(eax, eax); |
- Split(cc, if_true, if_false, fall_through); |
- } |
- } |
- |
- // Convert the result of the comparison into one expected for this |
- // expression's context. |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::EmitLiteralCompareNil(CompareOperation* expr, |
- Expression* sub_expr, |
- NilValue nil) { |
- Label materialize_true, materialize_false; |
- Label* if_true = NULL; |
- Label* if_false = NULL; |
- Label* fall_through = NULL; |
- context()->PrepareTest(&materialize_true, &materialize_false, |
- &if_true, &if_false, &fall_through); |
- |
- VisitForAccumulatorValue(sub_expr); |
- PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
- |
- Handle<Object> nil_value = nil == kNullValue |
- ? isolate()->factory()->null_value() |
- : isolate()->factory()->undefined_value(); |
- if (expr->op() == Token::EQ_STRICT) { |
- __ cmp(eax, nil_value); |
- Split(equal, if_true, if_false, fall_through); |
- } else { |
- Handle<Code> ic = CompareNilICStub::GetUninitialized(isolate(), nil); |
- CallIC(ic, expr->CompareOperationFeedbackId()); |
- __ test(eax, eax); |
- Split(not_zero, if_true, if_false, fall_through); |
- } |
- context()->Plug(if_true, if_false); |
-} |
- |
- |
-void FullCodeGenerator::VisitThisFunction(ThisFunction* expr) { |
- __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
- context()->Plug(eax); |
-} |
- |
- |
-Register FullCodeGenerator::result_register() { |
- return eax; |
-} |
- |
- |
-Register FullCodeGenerator::context_register() { |
- return esi; |
-} |
- |
- |
-void FullCodeGenerator::StoreToFrameField(int frame_offset, Register value) { |
- DCHECK_EQ(POINTER_SIZE_ALIGN(frame_offset), frame_offset); |
- __ mov(Operand(ebp, frame_offset), value); |
-} |
- |
- |
-void FullCodeGenerator::LoadContextField(Register dst, int context_index) { |
- __ mov(dst, ContextOperand(esi, context_index)); |
-} |
- |
- |
-void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { |
- Scope* declaration_scope = scope()->DeclarationScope(); |
- if (declaration_scope->is_script_scope() || |
- declaration_scope->is_module_scope()) { |
- // Contexts nested in the native context have a canonical empty function |
- // as their closure, not the anonymous closure containing the global |
- // code. Pass a smi sentinel and let the runtime look up the empty |
- // function. |
- __ push(Immediate(Smi::FromInt(0))); |
- } else if (declaration_scope->is_eval_scope()) { |
- // Contexts nested inside eval code have the same closure as the context |
- // calling eval, not the anonymous closure containing the eval code. |
- // Fetch it from the context. |
- __ push(ContextOperand(esi, Context::CLOSURE_INDEX)); |
- } else { |
- DCHECK(declaration_scope->is_function_scope()); |
- __ push(Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
- } |
-} |
- |
- |
-// ---------------------------------------------------------------------------- |
-// Non-local control flow support. |
- |
-void FullCodeGenerator::EnterFinallyBlock() { |
- // Cook return address on top of stack (smi encoded Code* delta) |
- DCHECK(!result_register().is(edx)); |
- __ pop(edx); |
- __ sub(edx, Immediate(masm_->CodeObject())); |
- STATIC_ASSERT(kSmiTagSize + kSmiShiftSize == 1); |
- STATIC_ASSERT(kSmiTag == 0); |
- __ SmiTag(edx); |
- __ push(edx); |
- |
- // Store result register while executing finally block. |
- __ push(result_register()); |
- |
- // Store pending message while executing finally block. |
- ExternalReference pending_message_obj = |
- ExternalReference::address_of_pending_message_obj(isolate()); |
- __ mov(edx, Operand::StaticVariable(pending_message_obj)); |
- __ push(edx); |
- |
- ClearPendingMessage(); |
-} |
- |
- |
-void FullCodeGenerator::ExitFinallyBlock() { |
- DCHECK(!result_register().is(edx)); |
- // Restore pending message from stack. |
- __ pop(edx); |
- ExternalReference pending_message_obj = |
- ExternalReference::address_of_pending_message_obj(isolate()); |
- __ mov(Operand::StaticVariable(pending_message_obj), edx); |
- |
- // Restore result register from stack. |
- __ pop(result_register()); |
- |
- // Uncook return address. |
- __ pop(edx); |
- __ SmiUntag(edx); |
- __ add(edx, Immediate(masm_->CodeObject())); |
- __ jmp(edx); |
-} |
- |
- |
-void FullCodeGenerator::ClearPendingMessage() { |
- DCHECK(!result_register().is(edx)); |
- ExternalReference pending_message_obj = |
- ExternalReference::address_of_pending_message_obj(isolate()); |
- __ mov(edx, Immediate(isolate()->factory()->the_hole_value())); |
- __ mov(Operand::StaticVariable(pending_message_obj), edx); |
-} |
- |
- |
-void FullCodeGenerator::EmitLoadStoreICSlot(FeedbackVectorICSlot slot) { |
- DCHECK(FLAG_vector_stores && !slot.IsInvalid()); |
- __ mov(VectorStoreICTrampolineDescriptor::SlotRegister(), |
- Immediate(SmiFromSlot(slot))); |
-} |
- |
- |
-#undef __ |
- |
- |
-static const byte kJnsInstruction = 0x79; |
-static const byte kJnsOffset = 0x11; |
-static const byte kNopByteOne = 0x66; |
-static const byte kNopByteTwo = 0x90; |
-#ifdef DEBUG |
-static const byte kCallInstruction = 0xe8; |
-#endif |
- |
- |
-void BackEdgeTable::PatchAt(Code* unoptimized_code, |
- Address pc, |
- BackEdgeState target_state, |
- Code* replacement_code) { |
- Address call_target_address = pc - kIntSize; |
- Address jns_instr_address = call_target_address - 3; |
- Address jns_offset_address = call_target_address - 2; |
- |
- switch (target_state) { |
- case INTERRUPT: |
- // sub <profiling_counter>, <delta> ;; Not changed |
- // jns ok |
- // call <interrupt stub> |
- // ok: |
- *jns_instr_address = kJnsInstruction; |
- *jns_offset_address = kJnsOffset; |
- break; |
- case ON_STACK_REPLACEMENT: |
- case OSR_AFTER_STACK_CHECK: |
- // sub <profiling_counter>, <delta> ;; Not changed |
- // nop |
- // nop |
- // call <on-stack replacment> |
- // ok: |
- *jns_instr_address = kNopByteOne; |
- *jns_offset_address = kNopByteTwo; |
- break; |
- } |
- |
- Assembler::set_target_address_at(call_target_address, |
- unoptimized_code, |
- replacement_code->entry()); |
- unoptimized_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( |
- unoptimized_code, call_target_address, replacement_code); |
-} |
- |
- |
-BackEdgeTable::BackEdgeState BackEdgeTable::GetBackEdgeState( |
- Isolate* isolate, |
- Code* unoptimized_code, |
- Address pc) { |
- Address call_target_address = pc - kIntSize; |
- Address jns_instr_address = call_target_address - 3; |
- DCHECK_EQ(kCallInstruction, *(call_target_address - 1)); |
- |
- if (*jns_instr_address == kJnsInstruction) { |
- DCHECK_EQ(kJnsOffset, *(call_target_address - 2)); |
- DCHECK_EQ(isolate->builtins()->InterruptCheck()->entry(), |
- Assembler::target_address_at(call_target_address, |
- unoptimized_code)); |
- return INTERRUPT; |
- } |
- |
- DCHECK_EQ(kNopByteOne, *jns_instr_address); |
- DCHECK_EQ(kNopByteTwo, *(call_target_address - 2)); |
- |
- if (Assembler::target_address_at(call_target_address, unoptimized_code) == |
- isolate->builtins()->OnStackReplacement()->entry()) { |
- return ON_STACK_REPLACEMENT; |
- } |
- |
- DCHECK_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), |
- Assembler::target_address_at(call_target_address, |
- unoptimized_code)); |
- return OSR_AFTER_STACK_CHECK; |
-} |
- |
- |
-} // namespace internal |
-} // namespace v8 |
- |
-#endif // V8_TARGET_ARCH_IA32 |