| Index: src/arm/full-codegen-arm.cc
|
| diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
|
| deleted file mode 100644
|
| index 34ac1a54265f4c22079a63a29c1ad1d223b836ac..0000000000000000000000000000000000000000
|
| --- a/src/arm/full-codegen-arm.cc
|
| +++ /dev/null
|
| @@ -1,5478 +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_ARM
|
| -
|
| -#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"
|
| -
|
| -#include "src/arm/code-stubs-arm.h"
|
| -#include "src/arm/macro-assembler-arm.h"
|
| -
|
| -namespace v8 {
|
| -namespace internal {
|
| -
|
| -#define __ ACCESS_MASM(masm_)
|
| -
|
| -
|
| -// A patch site is a location in the code which it is possible to patch. This
|
| -// class has a number of methods to emit the code which is patchable and the
|
| -// method EmitPatchInfo to record a marker back to the patchable code. This
|
| -// marker is a cmp rx, #yyy instruction, and x * 0x00000fff + yyy (raw 12 bit
|
| -// immediate value is used) is the delta from the pc to the first instruction of
|
| -// the patchable code.
|
| -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_);
|
| - }
|
| -
|
| - // When initially emitting this ensure that a jump is always generated to skip
|
| - // the inlined smi code.
|
| - void EmitJumpIfNotSmi(Register reg, Label* target) {
|
| - DCHECK(!patch_site_.is_bound() && !info_emitted_);
|
| - Assembler::BlockConstPoolScope block_const_pool(masm_);
|
| - __ bind(&patch_site_);
|
| - __ cmp(reg, Operand(reg));
|
| - __ b(eq, target); // Always taken before patched.
|
| - }
|
| -
|
| - // When initially emitting this ensure that a jump is never generated to skip
|
| - // the inlined smi code.
|
| - void EmitJumpIfSmi(Register reg, Label* target) {
|
| - DCHECK(!patch_site_.is_bound() && !info_emitted_);
|
| - Assembler::BlockConstPoolScope block_const_pool(masm_);
|
| - __ bind(&patch_site_);
|
| - __ cmp(reg, Operand(reg));
|
| - __ b(ne, target); // Never taken before patched.
|
| - }
|
| -
|
| - void EmitPatchInfo() {
|
| - // Block literal pool emission whilst recording patch site information.
|
| - Assembler::BlockConstPoolScope block_const_pool(masm_);
|
| - if (patch_site_.is_bound()) {
|
| - int delta_to_patch_site = masm_->InstructionsGeneratedSince(&patch_site_);
|
| - Register reg;
|
| - reg.set_code(delta_to_patch_site / kOff12Mask);
|
| - __ cmp_raw_immediate(reg, delta_to_patch_site % kOff12Mask);
|
| -#ifdef DEBUG
|
| - info_emitted_ = true;
|
| -#endif
|
| - } else {
|
| - __ nop(); // Signals no inlined code.
|
| - }
|
| - }
|
| -
|
| - private:
|
| - 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. The actual
|
| -// argument count matches the formal parameter count expected by the
|
| -// function.
|
| -//
|
| -// The live registers are:
|
| -// o r1: the JS function object being called (i.e., ourselves)
|
| -// o cp: our context
|
| -// o pp: our caller's constant pool pointer (if enabled)
|
| -// o fp: our caller's frame pointer
|
| -// o sp: stack pointer
|
| -// o lr: return address
|
| -//
|
| -// The function builds a JS frame. Please see JavaScriptFrameConstants in
|
| -// frames-arm.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))) {
|
| - __ stop("stop-at");
|
| - }
|
| -#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() && info->scope()->has_this_declaration()) {
|
| - Label ok;
|
| - int receiver_offset = info->scope()->num_parameters() * kPointerSize;
|
| - __ ldr(r2, MemOperand(sp, receiver_offset));
|
| - __ CompareRoot(r2, Heap::kUndefinedValueRootIndex);
|
| - __ b(ne, &ok);
|
| -
|
| - __ ldr(r2, GlobalObjectOperand());
|
| - __ ldr(r2, FieldMemOperand(r2, GlobalObject::kGlobalProxyOffset));
|
| -
|
| - __ str(r2, MemOperand(sp, receiver_offset));
|
| -
|
| - __ 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 > 0) {
|
| - if (locals_count >= 128) {
|
| - Label ok;
|
| - __ sub(r9, sp, Operand(locals_count * kPointerSize));
|
| - __ LoadRoot(r2, Heap::kRealStackLimitRootIndex);
|
| - __ cmp(r9, Operand(r2));
|
| - __ b(hs, &ok);
|
| - __ InvokeBuiltin(Builtins::STACK_OVERFLOW, CALL_FUNCTION);
|
| - __ bind(&ok);
|
| - }
|
| - __ LoadRoot(r9, Heap::kUndefinedValueRootIndex);
|
| - int kMaxPushes = FLAG_optimize_for_size ? 4 : 32;
|
| - if (locals_count >= kMaxPushes) {
|
| - int loop_iterations = locals_count / kMaxPushes;
|
| - __ mov(r2, Operand(loop_iterations));
|
| - Label loop_header;
|
| - __ bind(&loop_header);
|
| - // Do pushes.
|
| - for (int i = 0; i < kMaxPushes; i++) {
|
| - __ push(r9);
|
| - }
|
| - // Continue loop if not done.
|
| - __ sub(r2, r2, Operand(1), SetCC);
|
| - __ b(&loop_header, ne);
|
| - }
|
| - int remaining = locals_count % kMaxPushes;
|
| - // Emit the remaining pushes.
|
| - for (int i = 0; i < remaining; i++) {
|
| - __ push(r9);
|
| - }
|
| - }
|
| - }
|
| -
|
| - bool function_in_register = true;
|
| -
|
| - // Possibly allocate a local context.
|
| - if (info->scope()->num_heap_slots() > 0) {
|
| - // Argument to NewContext is the function, which is still in r1.
|
| - Comment cmnt(masm_, "[ Allocate context");
|
| - bool need_write_barrier = true;
|
| - int slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS;
|
| - if (info->scope()->is_script_scope()) {
|
| - __ push(r1);
|
| - __ 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(r1);
|
| - __ CallRuntime(Runtime::kNewFunctionContext, 1);
|
| - }
|
| - function_in_register = false;
|
| - // Context is returned in r0. It replaces the context passed to us.
|
| - // It's saved in the stack and kept live in cp.
|
| - __ mov(cp, r0);
|
| - __ str(r0, MemOperand(fp, StandardFrameConstants::kContextOffset));
|
| - // Copy any necessary parameters into the context.
|
| - 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.
|
| - __ ldr(r0, MemOperand(fp, parameter_offset));
|
| - // Store it in the context.
|
| - MemOperand target = ContextOperand(cp, var->index());
|
| - __ str(r0, target);
|
| -
|
| - // Update the write barrier.
|
| - if (need_write_barrier) {
|
| - __ RecordWriteContextSlot(
|
| - cp, target.offset(), r0, r3, kLRHasBeenSaved, kDontSaveFPRegs);
|
| - } else if (FLAG_debug_code) {
|
| - Label done;
|
| - __ JumpIfInNewSpace(cp, r0, &done);
|
| - __ 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) {
|
| - __ ldr(r1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
|
| - // The write barrier clobbers register again, keep is marked as such.
|
| - }
|
| - SetVar(this_function_var, r1, r0, r2);
|
| - }
|
| -
|
| - Variable* new_target_var = scope()->new_target_var();
|
| - if (new_target_var != nullptr) {
|
| - Comment cmnt(masm_, "[ new.target");
|
| -
|
| - __ ldr(r2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
|
| - __ ldr(r1, MemOperand(r2, StandardFrameConstants::kContextOffset));
|
| - __ cmp(r1, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
|
| - __ ldr(r2, MemOperand(r2, StandardFrameConstants::kCallerFPOffset), eq);
|
| - __ ldr(r1, MemOperand(r2, StandardFrameConstants::kMarkerOffset));
|
| - __ cmp(r1, Operand(Smi::FromInt(StackFrame::CONSTRUCT)));
|
| - Label non_construct_frame, done;
|
| -
|
| - __ b(ne, &non_construct_frame);
|
| - __ ldr(r0,
|
| - MemOperand(r2, ConstructFrameConstants::kOriginalConstructorOffset));
|
| - __ b(&done);
|
| -
|
| - __ bind(&non_construct_frame);
|
| - __ LoadRoot(r0, Heap::kUndefinedValueRootIndex);
|
| - __ bind(&done);
|
| -
|
| - SetVar(new_target_var, r0, r2, r3);
|
| - }
|
| -
|
| - // 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;
|
| -
|
| - __ add(r3, fp, Operand(StandardFrameConstants::kCallerSPOffset + offset));
|
| - __ mov(r2, Operand(Smi::FromInt(num_parameters)));
|
| - __ mov(r1, Operand(Smi::FromInt(rest_index)));
|
| - __ mov(r0, Operand(Smi::FromInt(language_mode())));
|
| - __ Push(r3, r2, r1, r0);
|
| -
|
| - RestParamAccessStub stub(isolate());
|
| - __ CallStub(&stub);
|
| -
|
| - SetVar(rest_param, r0, r1, r2);
|
| - }
|
| -
|
| - Variable* arguments = scope()->arguments();
|
| - if (arguments != NULL) {
|
| - // Function uses arguments object.
|
| - Comment cmnt(masm_, "[ Allocate arguments object");
|
| - if (!function_in_register) {
|
| - // Load this again, if it's used by the local context below.
|
| - __ ldr(r3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
|
| - } else {
|
| - __ mov(r3, r1);
|
| - }
|
| - // Receiver is just before the parameters on the caller's stack.
|
| - int num_parameters = info->scope()->num_parameters();
|
| - int offset = num_parameters * kPointerSize;
|
| -
|
| - __ add(r2, fp, Operand(StandardFrameConstants::kCallerSPOffset + offset));
|
| - __ mov(r1, Operand(Smi::FromInt(num_parameters)));
|
| - __ Push(r3, r2, r1);
|
| -
|
| - // Arguments to ArgumentsAccessStub:
|
| - // function, receiver address, parameter count.
|
| - // The stub will rewrite receiever 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, r0, r1, r2);
|
| - }
|
| -
|
| -
|
| - 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;
|
| - __ LoadRoot(ip, Heap::kStackLimitRootIndex);
|
| - __ cmp(sp, Operand(ip));
|
| - __ b(hs, &ok);
|
| - Handle<Code> stack_check = isolate()->builtins()->StackCheck();
|
| - PredictableCodeSizeScope predictable(masm_);
|
| - predictable.ExpectSize(
|
| - masm_->CallSize(stack_check, RelocInfo::CODE_TARGET));
|
| - __ Call(stack_check, 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>;");
|
| - __ LoadRoot(r0, Heap::kUndefinedValueRootIndex);
|
| - }
|
| - EmitReturnSequence();
|
| -
|
| - // Force emit the constant pool, so it doesn't get emitted in the middle
|
| - // of the back edge table.
|
| - masm()->CheckConstPool(true, false);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::ClearAccumulator() {
|
| - __ mov(r0, Operand(Smi::FromInt(0)));
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitProfilingCounterDecrement(int delta) {
|
| - __ mov(r2, Operand(profiling_counter_));
|
| - __ ldr(r3, FieldMemOperand(r2, Cell::kValueOffset));
|
| - __ sub(r3, r3, Operand(Smi::FromInt(delta)), SetCC);
|
| - __ str(r3, FieldMemOperand(r2, Cell::kValueOffset));
|
| -}
|
| -
|
| -
|
| -#ifdef CAN_USE_ARMV7_INSTRUCTIONS
|
| -static const int kProfileCounterResetSequenceLength = 5 * Assembler::kInstrSize;
|
| -#else
|
| -static const int kProfileCounterResetSequenceLength = 7 * Assembler::kInstrSize;
|
| -#endif
|
| -
|
| -
|
| -void FullCodeGenerator::EmitProfilingCounterReset() {
|
| - Assembler::BlockConstPoolScope block_const_pool(masm_);
|
| - PredictableCodeSizeScope predictable_code_size_scope(
|
| - masm_, kProfileCounterResetSequenceLength);
|
| - Label start;
|
| - __ bind(&start);
|
| - int reset_value = FLAG_interrupt_budget;
|
| - if (info_->is_debug()) {
|
| - // Detect debug break requests as soon as possible.
|
| - reset_value = FLAG_interrupt_budget >> 4;
|
| - }
|
| - __ mov(r2, Operand(profiling_counter_));
|
| - // The mov instruction above can be either 1 to 3 (for ARMv7) or 1 to 5
|
| - // instructions (for ARMv6) depending upon whether it is an extended constant
|
| - // pool - insert nop to compensate.
|
| - int expected_instr_count =
|
| - (kProfileCounterResetSequenceLength / Assembler::kInstrSize) - 2;
|
| - DCHECK(masm_->InstructionsGeneratedSince(&start) <= expected_instr_count);
|
| - while (masm_->InstructionsGeneratedSince(&start) != expected_instr_count) {
|
| - __ nop();
|
| - }
|
| - __ mov(r3, Operand(Smi::FromInt(reset_value)));
|
| - __ str(r3, FieldMemOperand(r2, Cell::kValueOffset));
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitBackEdgeBookkeeping(IterationStatement* stmt,
|
| - Label* back_edge_target) {
|
| - Comment cmnt(masm_, "[ Back edge bookkeeping");
|
| - // Block literal pools whilst emitting back edge code.
|
| - Assembler::BlockConstPoolScope block_const_pool(masm_);
|
| - 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);
|
| - __ b(pl, &ok);
|
| - __ 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()) {
|
| - __ b(&return_label_);
|
| - } else {
|
| - __ bind(&return_label_);
|
| - if (FLAG_trace) {
|
| - // Push the return value on the stack as the parameter.
|
| - // Runtime::TraceExit returns its parameter in r0.
|
| - __ push(r0);
|
| - __ 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;
|
| - __ b(pl, &ok);
|
| - __ push(r0);
|
| - __ Call(isolate()->builtins()->InterruptCheck(),
|
| - RelocInfo::CODE_TARGET);
|
| - __ pop(r0);
|
| - EmitProfilingCounterReset();
|
| - __ bind(&ok);
|
| -
|
| - // Make sure that the constant pool is not emitted inside of the return
|
| - // sequence.
|
| - { Assembler::BlockConstPoolScope block_const_pool(masm_);
|
| - int32_t arg_count = info_->scope()->num_parameters() + 1;
|
| - int32_t sp_delta = arg_count * kPointerSize;
|
| - SetReturnPosition(function());
|
| - // TODO(svenpanne) The code below is sometimes 4 words, sometimes 5!
|
| - PredictableCodeSizeScope predictable(masm_, -1);
|
| - int no_frame_start = __ LeaveFrame(StackFrame::JAVA_SCRIPT);
|
| - { ConstantPoolUnavailableScope constant_pool_unavailable(masm_);
|
| - __ add(sp, sp, Operand(sp_delta));
|
| - __ Jump(lr);
|
| - info_->AddNoFrameRange(no_frame_start, masm_->pc_offset());
|
| - }
|
| - }
|
| - }
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::StackValueContext::Plug(Variable* var) const {
|
| - DCHECK(var->IsStackAllocated() || var->IsContextSlot());
|
| - codegen()->GetVar(result_register(), var);
|
| - __ push(result_register());
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EffectContext::Plug(Heap::RootListIndex index) const {
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::AccumulatorValueContext::Plug(
|
| - Heap::RootListIndex index) const {
|
| - __ LoadRoot(result_register(), index);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::StackValueContext::Plug(
|
| - Heap::RootListIndex index) const {
|
| - __ LoadRoot(result_register(), index);
|
| - __ push(result_register());
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::TestContext::Plug(Heap::RootListIndex index) const {
|
| - codegen()->PrepareForBailoutBeforeSplit(condition(),
|
| - true,
|
| - true_label_,
|
| - false_label_);
|
| - if (index == Heap::kUndefinedValueRootIndex ||
|
| - index == Heap::kNullValueRootIndex ||
|
| - index == Heap::kFalseValueRootIndex) {
|
| - if (false_label_ != fall_through_) __ b(false_label_);
|
| - } else if (index == Heap::kTrueValueRootIndex) {
|
| - if (true_label_ != fall_through_) __ b(true_label_);
|
| - } else {
|
| - __ LoadRoot(result_register(), index);
|
| - codegen()->DoTest(this);
|
| - }
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EffectContext::Plug(Handle<Object> lit) const {
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::AccumulatorValueContext::Plug(
|
| - Handle<Object> lit) const {
|
| - __ mov(result_register(), Operand(lit));
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::StackValueContext::Plug(Handle<Object> lit) const {
|
| - // Immediates cannot be pushed directly.
|
| - __ mov(result_register(), Operand(lit));
|
| - __ push(result_register());
|
| -}
|
| -
|
| -
|
| -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_) __ b(false_label_);
|
| - } else if (lit->IsTrue() || lit->IsJSObject()) {
|
| - if (true_label_ != fall_through_) __ b(true_label_);
|
| - } else if (lit->IsString()) {
|
| - if (String::cast(*lit)->length() == 0) {
|
| - if (false_label_ != fall_through_) __ b(false_label_);
|
| - } else {
|
| - if (true_label_ != fall_through_) __ b(true_label_);
|
| - }
|
| - } else if (lit->IsSmi()) {
|
| - if (Smi::cast(*lit)->value() == 0) {
|
| - if (false_label_ != fall_through_) __ b(false_label_);
|
| - } else {
|
| - if (true_label_ != fall_through_) __ b(true_label_);
|
| - }
|
| - } else {
|
| - // For simplicity we always test the accumulator register.
|
| - __ mov(result_register(), Operand(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);
|
| - __ str(reg, MemOperand(sp, 0));
|
| -}
|
| -
|
| -
|
| -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);
|
| - __ LoadRoot(result_register(), Heap::kTrueValueRootIndex);
|
| - __ jmp(&done);
|
| - __ bind(materialize_false);
|
| - __ LoadRoot(result_register(), Heap::kFalseValueRootIndex);
|
| - __ bind(&done);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::StackValueContext::Plug(
|
| - Label* materialize_true,
|
| - Label* materialize_false) const {
|
| - Label done;
|
| - __ bind(materialize_true);
|
| - __ LoadRoot(ip, Heap::kTrueValueRootIndex);
|
| - __ jmp(&done);
|
| - __ bind(materialize_false);
|
| - __ LoadRoot(ip, Heap::kFalseValueRootIndex);
|
| - __ bind(&done);
|
| - __ push(ip);
|
| -}
|
| -
|
| -
|
| -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 {
|
| - Heap::RootListIndex value_root_index =
|
| - flag ? Heap::kTrueValueRootIndex : Heap::kFalseValueRootIndex;
|
| - __ LoadRoot(result_register(), value_root_index);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::StackValueContext::Plug(bool flag) const {
|
| - Heap::RootListIndex value_root_index =
|
| - flag ? Heap::kTrueValueRootIndex : Heap::kFalseValueRootIndex;
|
| - __ LoadRoot(ip, value_root_index);
|
| - __ push(ip);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::TestContext::Plug(bool flag) const {
|
| - codegen()->PrepareForBailoutBeforeSplit(condition(),
|
| - true,
|
| - true_label_,
|
| - false_label_);
|
| - if (flag) {
|
| - if (true_label_ != fall_through_) __ b(true_label_);
|
| - } else {
|
| - if (false_label_ != fall_through_) __ b(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());
|
| - __ tst(result_register(), result_register());
|
| - Split(ne, if_true, if_false, fall_through);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::Split(Condition cond,
|
| - Label* if_true,
|
| - Label* if_false,
|
| - Label* fall_through) {
|
| - if (if_false == fall_through) {
|
| - __ b(cond, if_true);
|
| - } else if (if_true == fall_through) {
|
| - __ b(NegateCondition(cond), if_false);
|
| - } else {
|
| - __ b(cond, if_true);
|
| - __ b(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 MemOperand(fp, 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) {
|
| - // Use destination as scratch.
|
| - MemOperand location = VarOperand(var, dest);
|
| - __ ldr(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);
|
| - __ str(src, location);
|
| -
|
| - // Emit the write barrier code if the location is in the heap.
|
| - if (var->IsContextSlot()) {
|
| - __ RecordWriteContextSlot(scratch0,
|
| - location.offset(),
|
| - src,
|
| - scratch1,
|
| - kLRHasBeenSaved,
|
| - 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) __ b(&skip);
|
| - PrepareForBailout(expr, TOS_REG);
|
| - if (should_normalize) {
|
| - __ LoadRoot(ip, Heap::kTrueValueRootIndex);
|
| - __ cmp(r0, ip);
|
| - Split(eq, if_true, if_false, NULL);
|
| - __ bind(&skip);
|
| - }
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitDebugCheckDeclarationContext(Variable* variable) {
|
| - // The variable in the declaration always resides in the current function
|
| - // context.
|
| - DCHECK_EQ(0, scope()->ContextChainLength(variable->scope()));
|
| - if (generate_debug_code_) {
|
| - // Check that we're not inside a with or catch context.
|
| - __ ldr(r1, FieldMemOperand(cp, HeapObject::kMapOffset));
|
| - __ CompareRoot(r1, Heap::kWithContextMapRootIndex);
|
| - __ Check(ne, kDeclarationInWithContext);
|
| - __ CompareRoot(r1, Heap::kCatchContextMapRootIndex);
|
| - __ Check(ne, 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");
|
| - __ LoadRoot(ip, Heap::kTheHoleValueRootIndex);
|
| - __ str(ip, StackOperand(variable));
|
| - }
|
| - break;
|
| -
|
| - case VariableLocation::CONTEXT:
|
| - if (hole_init) {
|
| - Comment cmnt(masm_, "[ VariableDeclaration");
|
| - EmitDebugCheckDeclarationContext(variable);
|
| - __ LoadRoot(ip, Heap::kTheHoleValueRootIndex);
|
| - __ str(ip, ContextOperand(cp, variable->index()));
|
| - // No write barrier since the_hole_value is in old space.
|
| - PrepareForBailoutForId(proxy->id(), NO_REGISTERS);
|
| - }
|
| - break;
|
| -
|
| - case VariableLocation::LOOKUP: {
|
| - Comment cmnt(masm_, "[ VariableDeclaration");
|
| - __ mov(r2, Operand(variable->name()));
|
| - // Declaration nodes are always introduced in one of four modes.
|
| - DCHECK(IsDeclaredVariableMode(mode));
|
| - PropertyAttributes attr =
|
| - IsImmutableVariableMode(mode) ? READ_ONLY : NONE;
|
| - __ mov(r1, Operand(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) {
|
| - __ LoadRoot(r0, Heap::kTheHoleValueRootIndex);
|
| - __ Push(cp, r2, r1, r0);
|
| - } else {
|
| - __ mov(r0, Operand(Smi::FromInt(0))); // Indicates no initial value.
|
| - __ Push(cp, r2, r1, r0);
|
| - }
|
| - __ 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());
|
| - __ str(result_register(), StackOperand(variable));
|
| - break;
|
| - }
|
| -
|
| - case VariableLocation::CONTEXT: {
|
| - Comment cmnt(masm_, "[ FunctionDeclaration");
|
| - EmitDebugCheckDeclarationContext(variable);
|
| - VisitForAccumulatorValue(declaration->fun());
|
| - __ str(result_register(), ContextOperand(cp, variable->index()));
|
| - int offset = Context::SlotOffset(variable->index());
|
| - // We know that we have written a function, which is not a smi.
|
| - __ RecordWriteContextSlot(cp,
|
| - offset,
|
| - result_register(),
|
| - r2,
|
| - kLRHasBeenSaved,
|
| - kDontSaveFPRegs,
|
| - EMIT_REMEMBERED_SET,
|
| - OMIT_SMI_CHECK);
|
| - PrepareForBailoutForId(proxy->id(), NO_REGISTERS);
|
| - break;
|
| - }
|
| -
|
| - case VariableLocation::LOOKUP: {
|
| - Comment cmnt(masm_, "[ FunctionDeclaration");
|
| - __ mov(r2, Operand(variable->name()));
|
| - __ mov(r1, Operand(Smi::FromInt(NONE)));
|
| - __ Push(cp, r2, r1);
|
| - // Push initial value for function declaration.
|
| - VisitForStackValue(declaration->fun());
|
| - __ CallRuntime(Runtime::kDeclareLookupSlot, 4);
|
| - break;
|
| - }
|
| - }
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::DeclareGlobals(Handle<FixedArray> pairs) {
|
| - // Call the runtime to declare the globals.
|
| - // The context is the first argument.
|
| - __ mov(r1, Operand(pairs));
|
| - __ mov(r0, Operand(Smi::FromInt(DeclareGlobalsFlags())));
|
| - __ Push(cp, r1, r0);
|
| - __ 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 '==='.
|
| - __ ldr(r1, MemOperand(sp, 0)); // Switch value.
|
| - bool inline_smi_code = ShouldInlineSmiCase(Token::EQ_STRICT);
|
| - JumpPatchSite patch_site(masm_);
|
| - if (inline_smi_code) {
|
| - Label slow_case;
|
| - __ orr(r2, r1, r0);
|
| - patch_site.EmitJumpIfNotSmi(r2, &slow_case);
|
| -
|
| - __ cmp(r1, r0);
|
| - __ b(ne, &next_test);
|
| - __ Drop(1); // Switch value is no longer needed.
|
| - __ b(clause->body_target());
|
| - __ bind(&slow_case);
|
| - }
|
| -
|
| - // Record position before stub call for type feedback.
|
| - SetExpressionPosition(clause);
|
| - Handle<Code> ic = CodeFactory::CompareIC(isolate(), Token::EQ_STRICT,
|
| - strength(language_mode())).code();
|
| - CallIC(ic, clause->CompareId());
|
| - patch_site.EmitPatchInfo();
|
| -
|
| - Label skip;
|
| - __ b(&skip);
|
| - PrepareForBailout(clause, TOS_REG);
|
| - __ LoadRoot(ip, Heap::kTrueValueRootIndex);
|
| - __ cmp(r0, ip);
|
| - __ b(ne, &next_test);
|
| - __ Drop(1);
|
| - __ jmp(clause->body_target());
|
| - __ bind(&skip);
|
| -
|
| - __ cmp(r0, Operand::Zero());
|
| - __ b(ne, &next_test);
|
| - __ Drop(1); // Switch value is no longer needed.
|
| - __ b(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) {
|
| - __ b(nested_statement.break_label());
|
| - } else {
|
| - __ b(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());
|
| - __ LoadRoot(ip, Heap::kUndefinedValueRootIndex);
|
| - __ cmp(r0, ip);
|
| - __ b(eq, &exit);
|
| - Register null_value = r5;
|
| - __ LoadRoot(null_value, Heap::kNullValueRootIndex);
|
| - __ cmp(r0, null_value);
|
| - __ b(eq, &exit);
|
| -
|
| - PrepareForBailoutForId(stmt->PrepareId(), TOS_REG);
|
| -
|
| - // Convert the object to a JS object.
|
| - Label convert, done_convert;
|
| - __ JumpIfSmi(r0, &convert);
|
| - __ CompareObjectType(r0, r1, r1, FIRST_SPEC_OBJECT_TYPE);
|
| - __ b(ge, &done_convert);
|
| - __ bind(&convert);
|
| - __ push(r0);
|
| - __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION);
|
| - __ bind(&done_convert);
|
| - PrepareForBailoutForId(stmt->ToObjectId(), TOS_REG);
|
| - __ push(r0);
|
| -
|
| - // Check for proxies.
|
| - Label call_runtime;
|
| - STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE);
|
| - __ CompareObjectType(r0, r1, r1, LAST_JS_PROXY_TYPE);
|
| - __ b(le, &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(null_value, &call_runtime);
|
| -
|
| - // The enum cache is valid. Load the map of the object being
|
| - // iterated over and use the cache for the iteration.
|
| - Label use_cache;
|
| - __ ldr(r0, FieldMemOperand(r0, HeapObject::kMapOffset));
|
| - __ b(&use_cache);
|
| -
|
| - // Get the set of properties to enumerate.
|
| - __ bind(&call_runtime);
|
| - __ push(r0); // Duplicate the enumerable object on the stack.
|
| - __ CallRuntime(Runtime::kGetPropertyNamesFast, 1);
|
| - PrepareForBailoutForId(stmt->EnumId(), TOS_REG);
|
| -
|
| - // If we got a map from the runtime call, we can do a fast
|
| - // modification check. Otherwise, we got a fixed array, and we have
|
| - // to do a slow check.
|
| - Label fixed_array;
|
| - __ ldr(r2, FieldMemOperand(r0, HeapObject::kMapOffset));
|
| - __ LoadRoot(ip, Heap::kMetaMapRootIndex);
|
| - __ cmp(r2, ip);
|
| - __ b(ne, &fixed_array);
|
| -
|
| - // We got a map in register r0. Get the enumeration cache from it.
|
| - Label no_descriptors;
|
| - __ bind(&use_cache);
|
| -
|
| - __ EnumLength(r1, r0);
|
| - __ cmp(r1, Operand(Smi::FromInt(0)));
|
| - __ b(eq, &no_descriptors);
|
| -
|
| - __ LoadInstanceDescriptors(r0, r2);
|
| - __ ldr(r2, FieldMemOperand(r2, DescriptorArray::kEnumCacheOffset));
|
| - __ ldr(r2, FieldMemOperand(r2, DescriptorArray::kEnumCacheBridgeCacheOffset));
|
| -
|
| - // Set up the four remaining stack slots.
|
| - __ push(r0); // Map.
|
| - __ mov(r0, Operand(Smi::FromInt(0)));
|
| - // Push enumeration cache, enumeration cache length (as smi) and zero.
|
| - __ Push(r2, r1, r0);
|
| - __ jmp(&loop);
|
| -
|
| - __ bind(&no_descriptors);
|
| - __ Drop(1);
|
| - __ jmp(&exit);
|
| -
|
| - // We got a fixed array in register r0. Iterate through that.
|
| - Label non_proxy;
|
| - __ bind(&fixed_array);
|
| -
|
| - __ Move(r1, FeedbackVector());
|
| - __ mov(r2, Operand(TypeFeedbackVector::MegamorphicSentinel(isolate())));
|
| - int vector_index = FeedbackVector()->GetIndex(slot);
|
| - __ str(r2, FieldMemOperand(r1, FixedArray::OffsetOfElementAt(vector_index)));
|
| -
|
| - __ mov(r1, Operand(Smi::FromInt(1))); // Smi indicates slow check
|
| - __ ldr(r2, MemOperand(sp, 0 * kPointerSize)); // Get enumerated object
|
| - STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE);
|
| - __ CompareObjectType(r2, r3, r3, LAST_JS_PROXY_TYPE);
|
| - __ b(gt, &non_proxy);
|
| - __ mov(r1, Operand(Smi::FromInt(0))); // Zero indicates proxy
|
| - __ bind(&non_proxy);
|
| - __ Push(r1, r0); // Smi and array
|
| - __ ldr(r1, FieldMemOperand(r0, FixedArray::kLengthOffset));
|
| - __ mov(r0, Operand(Smi::FromInt(0)));
|
| - __ Push(r1, r0); // Fixed array length (as smi) and initial index.
|
| -
|
| - // Generate code for doing the condition check.
|
| - PrepareForBailoutForId(stmt->BodyId(), NO_REGISTERS);
|
| - __ bind(&loop);
|
| - SetExpressionAsStatementPosition(stmt->each());
|
| -
|
| - // Load the current count to r0, load the length to r1.
|
| - __ Ldrd(r0, r1, MemOperand(sp, 0 * kPointerSize));
|
| - __ cmp(r0, r1); // Compare to the array length.
|
| - __ b(hs, loop_statement.break_label());
|
| -
|
| - // Get the current entry of the array into register r3.
|
| - __ ldr(r2, MemOperand(sp, 2 * kPointerSize));
|
| - __ add(r2, r2, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
|
| - __ ldr(r3, MemOperand::PointerAddressFromSmiKey(r2, r0));
|
| -
|
| - // Get the expected map from the stack or a smi in the
|
| - // permanent slow case into register r2.
|
| - __ ldr(r2, MemOperand(sp, 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;
|
| - __ ldr(r1, MemOperand(sp, 4 * kPointerSize));
|
| - __ ldr(r4, FieldMemOperand(r1, HeapObject::kMapOffset));
|
| - __ cmp(r4, Operand(r2));
|
| - __ b(eq, &update_each);
|
| -
|
| - // For proxies, no filtering is done.
|
| - // TODO(rossberg): What if only a prototype is a proxy? Not specified yet.
|
| - __ cmp(r2, Operand(Smi::FromInt(0)));
|
| - __ b(eq, &update_each);
|
| -
|
| - // Convert the entry to a string or (smi) 0 if it isn't a property
|
| - // any more. If the property has been removed while iterating, we
|
| - // just skip it.
|
| - __ push(r1); // Enumerable.
|
| - __ push(r3); // Current entry.
|
| - __ CallRuntime(Runtime::kForInFilter, 2);
|
| - PrepareForBailoutForId(stmt->FilterId(), TOS_REG);
|
| - __ mov(r3, Operand(r0));
|
| - __ LoadRoot(ip, Heap::kUndefinedValueRootIndex);
|
| - __ cmp(r0, ip);
|
| - __ b(eq, loop_statement.continue_label());
|
| -
|
| - // Update the 'each' property or variable from the possibly filtered
|
| - // entry in register r3.
|
| - __ bind(&update_each);
|
| - __ mov(result_register(), r3);
|
| - // 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 the going to the next element by incrementing
|
| - // the index (smi) stored on top of the stack.
|
| - __ bind(loop_statement.continue_label());
|
| - __ pop(r0);
|
| - __ add(r0, r0, Operand(Smi::FromInt(1)));
|
| - __ push(r0);
|
| -
|
| - EmitBackEdgeBookkeeping(stmt, &loop);
|
| - __ b(&loop);
|
| -
|
| - // Remove the pointers stored on the stack.
|
| - __ bind(loop_statement.break_label());
|
| - __ Drop(5);
|
| -
|
| - // 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(r2, Operand(info));
|
| - __ CallStub(&stub);
|
| - } else {
|
| - __ mov(r0, Operand(info));
|
| - __ LoadRoot(r1, pretenure ? Heap::kTrueValueRootIndex
|
| - : Heap::kFalseValueRootIndex);
|
| - __ Push(cp, r0, r1);
|
| - __ CallRuntime(Runtime::kNewClosure, 3);
|
| - }
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitSetHomeObjectIfNeeded(Expression* initializer,
|
| - int offset,
|
| - FeedbackVectorICSlot slot) {
|
| - if (NeedsHomeObject(initializer)) {
|
| - __ ldr(StoreDescriptor::ReceiverRegister(), MemOperand(sp));
|
| - __ mov(StoreDescriptor::NameRegister(),
|
| - Operand(isolate()->factory()->home_object_symbol()));
|
| - __ ldr(StoreDescriptor::ValueRegister(),
|
| - MemOperand(sp, offset * kPointerSize));
|
| - if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
|
| - CallStoreIC();
|
| - }
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy,
|
| - TypeofMode typeof_mode,
|
| - Label* slow) {
|
| - Register current = cp;
|
| - Register next = r1;
|
| - Register temp = r2;
|
| -
|
| - Scope* s = scope();
|
| - while (s != NULL) {
|
| - if (s->num_heap_slots() > 0) {
|
| - if (s->calls_sloppy_eval()) {
|
| - // Check that extension is NULL.
|
| - __ ldr(temp, ContextOperand(current, Context::EXTENSION_INDEX));
|
| - __ tst(temp, temp);
|
| - __ b(ne, slow);
|
| - }
|
| - // Load next context in chain.
|
| - __ ldr(next, ContextOperand(current, Context::PREVIOUS_INDEX));
|
| - // Walk the rest of the chain without clobbering cp.
|
| - current = next;
|
| - }
|
| - // If no outer scope calls eval, we do not need to check more
|
| - // context extensions.
|
| - if (!s->outer_scope_calls_sloppy_eval() || s->is_eval_scope()) break;
|
| - s = s->outer_scope();
|
| - }
|
| -
|
| - if (s->is_eval_scope()) {
|
| - Label loop, fast;
|
| - if (!current.is(next)) {
|
| - __ Move(next, current);
|
| - }
|
| - __ bind(&loop);
|
| - // Terminate at native context.
|
| - __ ldr(temp, FieldMemOperand(next, HeapObject::kMapOffset));
|
| - __ LoadRoot(ip, Heap::kNativeContextMapRootIndex);
|
| - __ cmp(temp, ip);
|
| - __ b(eq, &fast);
|
| - // Check that extension is NULL.
|
| - __ ldr(temp, ContextOperand(next, Context::EXTENSION_INDEX));
|
| - __ tst(temp, temp);
|
| - __ b(ne, slow);
|
| - // Load next context in chain.
|
| - __ ldr(next, ContextOperand(next, Context::PREVIOUS_INDEX));
|
| - __ b(&loop);
|
| - __ 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 = cp;
|
| - Register next = r3;
|
| - Register temp = r4;
|
| -
|
| - 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.
|
| - __ ldr(temp, ContextOperand(context, Context::EXTENSION_INDEX));
|
| - __ tst(temp, temp);
|
| - __ b(ne, slow);
|
| - }
|
| - __ ldr(next, ContextOperand(context, Context::PREVIOUS_INDEX));
|
| - // Walk the rest of the chain without clobbering cp.
|
| - context = next;
|
| - }
|
| - }
|
| - // Check that last extension is NULL.
|
| - __ ldr(temp, ContextOperand(context, Context::EXTENSION_INDEX));
|
| - __ tst(temp, temp);
|
| - __ b(ne, slow);
|
| -
|
| - // This function is used only for loads, not stores, so it's safe to
|
| - // return an cp-based operand (the write barrier cannot be allowed to
|
| - // destroy the cp 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();
|
| - __ ldr(r0, ContextSlotOperandCheckExtensions(local, slow));
|
| - if (local->mode() == LET || local->mode() == CONST ||
|
| - local->mode() == CONST_LEGACY) {
|
| - __ CompareRoot(r0, Heap::kTheHoleValueRootIndex);
|
| - if (local->mode() == CONST_LEGACY) {
|
| - __ LoadRoot(r0, Heap::kUndefinedValueRootIndex, eq);
|
| - } else { // LET || CONST
|
| - __ b(ne, done);
|
| - __ mov(r0, Operand(var->name()));
|
| - __ push(r0);
|
| - __ 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(),
|
| - Operand(Smi::FromInt(depth)));
|
| - __ mov(LoadGlobalViaContextDescriptor::SlotRegister(),
|
| - Operand(Smi::FromInt(slot_index)));
|
| - __ mov(LoadGlobalViaContextDescriptor::NameRegister(),
|
| - Operand(var->name()));
|
| - LoadGlobalViaContextStub stub(isolate(), depth);
|
| - __ CallStub(&stub);
|
| -
|
| - } else {
|
| - __ ldr(LoadDescriptor::ReceiverRegister(), GlobalObjectOperand());
|
| - __ mov(LoadDescriptor::NameRegister(), Operand(var->name()));
|
| - __ mov(LoadDescriptor::SlotRegister(),
|
| - Operand(SmiFromSlot(proxy->VariableFeedbackSlot())));
|
| - CallLoadIC(typeof_mode);
|
| - }
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy,
|
| - TypeofMode typeof_mode) {
|
| - // Record position before possible IC call.
|
| - 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(r0);
|
| - 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.
|
| - GetVar(r0, var);
|
| - __ CompareRoot(r0, Heap::kTheHoleValueRootIndex);
|
| - if (var->mode() == LET || var->mode() == CONST) {
|
| - // Throw a reference error when using an uninitialized let/const
|
| - // binding in harmony mode.
|
| - Label done;
|
| - __ b(ne, &done);
|
| - __ mov(r0, Operand(var->name()));
|
| - __ push(r0);
|
| - __ CallRuntime(Runtime::kThrowReferenceError, 1);
|
| - __ bind(&done);
|
| - } else {
|
| - // Uninitalized const bindings outside of harmony mode are unholed.
|
| - DCHECK(var->mode() == CONST_LEGACY);
|
| - __ LoadRoot(r0, Heap::kUndefinedValueRootIndex, eq);
|
| - }
|
| - context()->Plug(r0);
|
| - 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);
|
| - __ mov(r1, Operand(var->name()));
|
| - __ Push(cp, r1); // Context and name.
|
| - Runtime::FunctionId function_id =
|
| - typeof_mode == NOT_INSIDE_TYPEOF
|
| - ? Runtime::kLoadLookupSlot
|
| - : Runtime::kLoadLookupSlotNoReferenceError;
|
| - __ CallRuntime(function_id, 2);
|
| - __ bind(&done);
|
| - context()->Plug(r0);
|
| - }
|
| - }
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::VisitRegExpLiteral(RegExpLiteral* expr) {
|
| - Comment cmnt(masm_, "[ RegExpLiteral");
|
| - Label materialized;
|
| - // Registers will be used as follows:
|
| - // r5 = materialized value (RegExp literal)
|
| - // r4 = JS function, literals array
|
| - // r3 = literal index
|
| - // r2 = RegExp pattern
|
| - // r1 = RegExp flags
|
| - // r0 = RegExp literal clone
|
| - __ ldr(r0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
|
| - __ ldr(r4, FieldMemOperand(r0, JSFunction::kLiteralsOffset));
|
| - int literal_offset =
|
| - FixedArray::kHeaderSize + expr->literal_index() * kPointerSize;
|
| - __ ldr(r5, FieldMemOperand(r4, literal_offset));
|
| - __ LoadRoot(ip, Heap::kUndefinedValueRootIndex);
|
| - __ cmp(r5, ip);
|
| - __ b(ne, &materialized);
|
| -
|
| - // Create regexp literal using runtime function.
|
| - // Result will be in r0.
|
| - __ mov(r3, Operand(Smi::FromInt(expr->literal_index())));
|
| - __ mov(r2, Operand(expr->pattern()));
|
| - __ mov(r1, Operand(expr->flags()));
|
| - __ Push(r4, r3, r2, r1);
|
| - __ CallRuntime(Runtime::kMaterializeRegExpLiteral, 4);
|
| - __ mov(r5, r0);
|
| -
|
| - __ bind(&materialized);
|
| - int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize;
|
| - Label allocated, runtime_allocate;
|
| - __ Allocate(size, r0, r2, r3, &runtime_allocate, TAG_OBJECT);
|
| - __ jmp(&allocated);
|
| -
|
| - __ bind(&runtime_allocate);
|
| - __ mov(r0, Operand(Smi::FromInt(size)));
|
| - __ Push(r5, r0);
|
| - __ CallRuntime(Runtime::kAllocateInNewSpace, 1);
|
| - __ pop(r5);
|
| -
|
| - __ bind(&allocated);
|
| - // After this, registers are used as follows:
|
| - // r0: Newly allocated regexp.
|
| - // r5: Materialized regexp.
|
| - // r2: temp.
|
| - __ CopyFields(r0, r5, d0, size / kPointerSize);
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitAccessor(Expression* expression) {
|
| - if (expression == NULL) {
|
| - __ LoadRoot(r1, Heap::kNullValueRootIndex);
|
| - __ push(r1);
|
| - } else {
|
| - VisitForStackValue(expression);
|
| - }
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
|
| - Comment cmnt(masm_, "[ ObjectLiteral");
|
| -
|
| - Handle<FixedArray> constant_properties = expr->constant_properties();
|
| - __ ldr(r3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
|
| - __ ldr(r3, FieldMemOperand(r3, JSFunction::kLiteralsOffset));
|
| - __ mov(r2, Operand(Smi::FromInt(expr->literal_index())));
|
| - __ mov(r1, Operand(constant_properties));
|
| - int flags = expr->ComputeFlags();
|
| - __ mov(r0, Operand(Smi::FromInt(flags)));
|
| - if (MustCreateObjectLiteralWithRuntime(expr)) {
|
| - __ Push(r3, r2, r1, r0);
|
| - __ CallRuntime(Runtime::kCreateObjectLiteral, 4);
|
| - } else {
|
| - 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 r0.
|
| - 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(r0); // Save result on stack
|
| - result_saved = true;
|
| - }
|
| - switch (property->kind()) {
|
| - case ObjectLiteral::Property::CONSTANT:
|
| - UNREACHABLE();
|
| - case ObjectLiteral::Property::MATERIALIZED_LITERAL:
|
| - DCHECK(!CompileTimeValue::IsCompileTimeValue(property->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(r0));
|
| - __ mov(StoreDescriptor::NameRegister(), Operand(key->value()));
|
| - __ ldr(StoreDescriptor::ReceiverRegister(), MemOperand(sp));
|
| - if (FLAG_vector_stores) {
|
| - EmitLoadStoreICSlot(expr->GetNthSlot(store_slot_index++));
|
| - CallStoreIC();
|
| - } else {
|
| - CallStoreIC(key->LiteralFeedbackId());
|
| - }
|
| - PrepareForBailoutForId(key->id(), NO_REGISTERS);
|
| -
|
| - if (NeedsHomeObject(value)) {
|
| - __ Move(StoreDescriptor::ReceiverRegister(), r0);
|
| - __ mov(StoreDescriptor::NameRegister(),
|
| - Operand(isolate()->factory()->home_object_symbol()));
|
| - __ ldr(StoreDescriptor::ValueRegister(), MemOperand(sp));
|
| - if (FLAG_vector_stores) {
|
| - EmitLoadStoreICSlot(expr->GetNthSlot(store_slot_index++));
|
| - }
|
| - CallStoreIC();
|
| - }
|
| - } else {
|
| - VisitForEffect(value);
|
| - }
|
| - break;
|
| - }
|
| - // Duplicate receiver on stack.
|
| - __ ldr(r0, MemOperand(sp));
|
| - __ push(r0);
|
| - VisitForStackValue(key);
|
| - VisitForStackValue(value);
|
| - if (property->emit_store()) {
|
| - EmitSetHomeObjectIfNeeded(
|
| - value, 2, expr->SlotForHomeObject(value, &store_slot_index));
|
| - __ mov(r0, Operand(Smi::FromInt(SLOPPY))); // PropertyAttributes
|
| - __ push(r0);
|
| - __ CallRuntime(Runtime::kSetProperty, 4);
|
| - } else {
|
| - __ Drop(3);
|
| - }
|
| - break;
|
| - case ObjectLiteral::Property::PROTOTYPE:
|
| - // Duplicate receiver on stack.
|
| - __ ldr(r0, MemOperand(sp));
|
| - __ push(r0);
|
| - 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) {
|
| - __ ldr(r0, MemOperand(sp)); // Duplicate receiver.
|
| - __ push(r0);
|
| - 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));
|
| - __ mov(r0, Operand(Smi::FromInt(NONE)));
|
| - __ push(r0);
|
| - __ 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(r0); // Save result on the stack
|
| - result_saved = true;
|
| - }
|
| -
|
| - __ ldr(r0, MemOperand(sp)); // Duplicate receiver.
|
| - __ push(r0);
|
| -
|
| - 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()) {
|
| - __ mov(r0, Operand(Smi::FromInt(NONE)));
|
| - __ push(r0);
|
| - __ CallRuntime(Runtime::kDefineDataPropertyUnchecked, 4);
|
| - } else {
|
| - __ Drop(3);
|
| - }
|
| - break;
|
| -
|
| - case ObjectLiteral::Property::PROTOTYPE:
|
| - UNREACHABLE();
|
| - break;
|
| -
|
| - case ObjectLiteral::Property::GETTER:
|
| - __ mov(r0, Operand(Smi::FromInt(NONE)));
|
| - __ push(r0);
|
| - __ CallRuntime(Runtime::kDefineGetterPropertyUnchecked, 4);
|
| - break;
|
| -
|
| - case ObjectLiteral::Property::SETTER:
|
| - __ mov(r0, Operand(Smi::FromInt(NONE)));
|
| - __ push(r0);
|
| - __ CallRuntime(Runtime::kDefineSetterPropertyUnchecked, 4);
|
| - break;
|
| - }
|
| - }
|
| - }
|
| -
|
| - if (expr->has_function()) {
|
| - DCHECK(result_saved);
|
| - __ ldr(r0, MemOperand(sp));
|
| - __ push(r0);
|
| - __ CallRuntime(Runtime::kToFastProperties, 1);
|
| - }
|
| -
|
| - if (result_saved) {
|
| - context()->PlugTOS();
|
| - } else {
|
| - context()->Plug(r0);
|
| - }
|
| -
|
| - // 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_fast_elements =
|
| - IsFastObjectElementsKind(expr->constant_elements_kind());
|
| - Handle<FixedArrayBase> constant_elements_values(
|
| - FixedArrayBase::cast(constant_elements->get(1)));
|
| -
|
| - AllocationSiteMode allocation_site_mode = TRACK_ALLOCATION_SITE;
|
| - if (has_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;
|
| - }
|
| -
|
| - __ ldr(r3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
|
| - __ ldr(r3, FieldMemOperand(r3, JSFunction::kLiteralsOffset));
|
| - __ mov(r2, Operand(Smi::FromInt(expr->literal_index())));
|
| - __ mov(r1, Operand(constant_elements));
|
| - if (MustCreateArrayLiteralWithRuntime(expr)) {
|
| - __ mov(r0, Operand(Smi::FromInt(expr->ComputeFlags())));
|
| - __ Push(r3, r2, r1, r0);
|
| - __ CallRuntime(Runtime::kCreateArrayLiteral, 4);
|
| - } else {
|
| - 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(r0);
|
| - __ Push(Smi::FromInt(expr->literal_index()));
|
| - result_saved = true;
|
| - }
|
| - VisitForAccumulatorValue(subexpr);
|
| -
|
| - if (has_fast_elements) {
|
| - int offset = FixedArray::kHeaderSize + (array_index * kPointerSize);
|
| - __ ldr(r6, MemOperand(sp, kPointerSize)); // Copy of array literal.
|
| - __ ldr(r1, FieldMemOperand(r6, JSObject::kElementsOffset));
|
| - __ str(result_register(), FieldMemOperand(r1, offset));
|
| - // Update the write barrier for the array store.
|
| - __ RecordWriteField(r1, offset, result_register(), r2,
|
| - kLRHasBeenSaved, kDontSaveFPRegs,
|
| - EMIT_REMEMBERED_SET, INLINE_SMI_CHECK);
|
| - } else {
|
| - __ mov(r3, Operand(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) {
|
| - __ pop(); // literal index
|
| - __ Pop(r0);
|
| - result_saved = false;
|
| - }
|
| - for (; array_index < length; array_index++) {
|
| - Expression* subexpr = subexprs->at(array_index);
|
| -
|
| - __ Push(r0);
|
| - 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) {
|
| - __ pop(); // literal index
|
| - context()->PlugTOS();
|
| - } else {
|
| - context()->Plug(r0);
|
| - }
|
| -}
|
| -
|
| -
|
| -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_PROPERTY:
|
| - if (expr->is_compound()) {
|
| - // We need the receiver both on the stack and in the register.
|
| - VisitForStackValue(property->obj());
|
| - __ ldr(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0));
|
| - } else {
|
| - VisitForStackValue(property->obj());
|
| - }
|
| - break;
|
| - case NAMED_SUPER_PROPERTY:
|
| - VisitForStackValue(
|
| - property->obj()->AsSuperPropertyReference()->this_var());
|
| - VisitForAccumulatorValue(
|
| - property->obj()->AsSuperPropertyReference()->home_object());
|
| - __ Push(result_register());
|
| - if (expr->is_compound()) {
|
| - const Register scratch = r1;
|
| - __ ldr(scratch, MemOperand(sp, kPointerSize));
|
| - __ Push(scratch);
|
| - __ Push(result_register());
|
| - }
|
| - 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()) {
|
| - const Register scratch = r1;
|
| - __ ldr(scratch, MemOperand(sp, 2 * kPointerSize));
|
| - __ Push(scratch);
|
| - __ ldr(scratch, MemOperand(sp, 2 * kPointerSize));
|
| - __ Push(scratch);
|
| - __ Push(result_register());
|
| - }
|
| - break;
|
| - case KEYED_PROPERTY:
|
| - if (expr->is_compound()) {
|
| - VisitForStackValue(property->obj());
|
| - VisitForStackValue(property->key());
|
| - __ ldr(LoadDescriptor::ReceiverRegister(),
|
| - MemOperand(sp, 1 * kPointerSize));
|
| - __ ldr(LoadDescriptor::NameRegister(), MemOperand(sp, 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 context(this);
|
| - switch (assign_type) {
|
| - case VARIABLE:
|
| - EmitVariableLoad(expr->target()->AsVariableProxy());
|
| - PrepareForBailout(expr->target(), TOS_REG);
|
| - break;
|
| - case NAMED_PROPERTY:
|
| - EmitNamedPropertyLoad(property);
|
| - PrepareForBailoutForId(property->LoadId(), TOS_REG);
|
| - break;
|
| - case NAMED_SUPER_PROPERTY:
|
| - EmitNamedSuperPropertyLoad(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(r0); // Left operand goes on the stack.
|
| - VisitForAccumulatorValue(expr->value());
|
| -
|
| - AccumulatorValueContext context(this);
|
| - 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(r0);
|
| - break;
|
| - case NAMED_PROPERTY:
|
| - EmitNamedPropertyAssignment(expr);
|
| - break;
|
| - case NAMED_SUPER_PROPERTY:
|
| - EmitNamedSuperPropertyStore(property);
|
| - context()->Plug(r0);
|
| - break;
|
| - case KEYED_SUPER_PROPERTY:
|
| - EmitKeyedSuperPropertyStore(property);
|
| - context()->Plug(r0);
|
| - 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(r1, Operand(Smi::FromInt(continuation.pos())));
|
| - __ str(r1, FieldMemOperand(r0, JSGeneratorObject::kContinuationOffset));
|
| - __ str(cp, FieldMemOperand(r0, JSGeneratorObject::kContextOffset));
|
| - __ mov(r1, cp);
|
| - __ RecordWriteField(r0, JSGeneratorObject::kContextOffset, r1, r2,
|
| - kLRHasBeenSaved, kDontSaveFPRegs);
|
| - __ add(r1, fp, Operand(StandardFrameConstants::kExpressionsOffset));
|
| - __ cmp(sp, r1);
|
| - __ b(eq, &post_runtime);
|
| - __ push(r0); // generator object
|
| - __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 1);
|
| - __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
|
| - __ bind(&post_runtime);
|
| - __ pop(result_register());
|
| - EmitReturnSequence();
|
| -
|
| - __ bind(&resume);
|
| - context()->Plug(result_register());
|
| - break;
|
| - }
|
| -
|
| - case Yield::kFinal: {
|
| - VisitForAccumulatorValue(expr->generator_object());
|
| - __ mov(r1, Operand(Smi::FromInt(JSGeneratorObject::kGeneratorClosed)));
|
| - __ str(r1, FieldMemOperand(result_register(),
|
| - JSGeneratorObject::kContinuationOffset));
|
| - // 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.
|
| - __ LoadRoot(r0, Heap::kUndefinedValueRootIndex);
|
| - __ b(&l_next);
|
| -
|
| - // catch (e) { receiver = iter; f = 'throw'; arg = e; goto l_call; }
|
| - __ bind(&l_catch);
|
| - __ LoadRoot(load_name, Heap::kthrow_stringRootIndex); // "throw"
|
| - __ ldr(r3, MemOperand(sp, 1 * kPointerSize)); // iter
|
| - __ Push(load_name, r3, r0); // "throw", iter, except
|
| - __ 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(r0); // result
|
| - int handler_index = NewHandlerTableEntry();
|
| - EnterTryBlock(handler_index, &l_catch);
|
| - const int try_block_size = TryCatch::kElementCount * kPointerSize;
|
| - __ push(r0); // result
|
| -
|
| - __ jmp(&l_suspend);
|
| - __ bind(&l_continuation);
|
| - __ RecordGeneratorContinuation();
|
| - __ jmp(&l_resume);
|
| -
|
| - __ bind(&l_suspend);
|
| - const int generator_object_depth = kPointerSize + try_block_size;
|
| - __ ldr(r0, MemOperand(sp, generator_object_depth));
|
| - __ push(r0); // g
|
| - __ Push(Smi::FromInt(handler_index)); // handler-index
|
| - DCHECK(l_continuation.pos() > 0 && Smi::IsValid(l_continuation.pos()));
|
| - __ mov(r1, Operand(Smi::FromInt(l_continuation.pos())));
|
| - __ str(r1, FieldMemOperand(r0, JSGeneratorObject::kContinuationOffset));
|
| - __ str(cp, FieldMemOperand(r0, JSGeneratorObject::kContextOffset));
|
| - __ mov(r1, cp);
|
| - __ RecordWriteField(r0, JSGeneratorObject::kContextOffset, r1, r2,
|
| - kLRHasBeenSaved, kDontSaveFPRegs);
|
| - __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 2);
|
| - __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
|
| - __ pop(r0); // result
|
| - EmitReturnSequence();
|
| - __ bind(&l_resume); // received in r0
|
| - ExitTryBlock(handler_index);
|
| -
|
| - // receiver = iter; f = 'next'; arg = received;
|
| - __ bind(&l_next);
|
| -
|
| - __ LoadRoot(load_name, Heap::knext_stringRootIndex); // "next"
|
| - __ ldr(r3, MemOperand(sp, 1 * kPointerSize)); // iter
|
| - __ Push(load_name, r3, r0); // "next", iter, received
|
| -
|
| - // result = receiver[f](arg);
|
| - __ bind(&l_call);
|
| - __ ldr(load_receiver, MemOperand(sp, kPointerSize));
|
| - __ ldr(load_name, MemOperand(sp, 2 * kPointerSize));
|
| - __ mov(LoadDescriptor::SlotRegister(),
|
| - Operand(SmiFromSlot(expr->KeyedLoadFeedbackSlot())));
|
| - Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate(), SLOPPY).code();
|
| - CallIC(ic, TypeFeedbackId::None());
|
| - __ mov(r1, r0);
|
| - __ str(r1, MemOperand(sp, 2 * kPointerSize));
|
| - SetCallPosition(expr, 1);
|
| - CallFunctionStub stub(isolate(), 1, CALL_AS_METHOD);
|
| - __ CallStub(&stub);
|
| -
|
| - __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
|
| - __ Drop(1); // The function is still on the stack; drop it.
|
| -
|
| - // if (!result.done) goto l_try;
|
| - __ bind(&l_loop);
|
| - __ Move(load_receiver, r0);
|
| -
|
| - __ push(load_receiver); // save result
|
| - __ LoadRoot(load_name, Heap::kdone_stringRootIndex); // "done"
|
| - __ mov(LoadDescriptor::SlotRegister(),
|
| - Operand(SmiFromSlot(expr->DoneFeedbackSlot())));
|
| - CallLoadIC(NOT_INSIDE_TYPEOF); // r0=result.done
|
| - Handle<Code> bool_ic = ToBooleanStub::GetUninitialized(isolate());
|
| - CallIC(bool_ic);
|
| - __ cmp(r0, Operand(0));
|
| - __ b(eq, &l_try);
|
| -
|
| - // result.value
|
| - __ pop(load_receiver); // result
|
| - __ LoadRoot(load_name, Heap::kvalue_stringRootIndex); // "value"
|
| - __ mov(LoadDescriptor::SlotRegister(),
|
| - Operand(SmiFromSlot(expr->ValueFeedbackSlot())));
|
| - CallLoadIC(NOT_INSIDE_TYPEOF); // r0=result.value
|
| - context()->DropAndPlug(2, r0); // drop iter and g
|
| - break;
|
| - }
|
| - }
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitGeneratorResume(Expression *generator,
|
| - Expression *value,
|
| - JSGeneratorObject::ResumeMode resume_mode) {
|
| - // The value stays in r0, 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.
|
| - // r1 will hold the generator object until the activation has been resumed.
|
| - VisitForStackValue(generator);
|
| - VisitForAccumulatorValue(value);
|
| - __ pop(r1);
|
| -
|
| - // Load suspended function and context.
|
| - __ ldr(cp, FieldMemOperand(r1, JSGeneratorObject::kContextOffset));
|
| - __ ldr(r4, FieldMemOperand(r1, JSGeneratorObject::kFunctionOffset));
|
| -
|
| - // Load receiver and store as the first argument.
|
| - __ ldr(r2, FieldMemOperand(r1, JSGeneratorObject::kReceiverOffset));
|
| - __ push(r2);
|
| -
|
| - // Push holes for the rest of the arguments to the generator function.
|
| - __ ldr(r3, FieldMemOperand(r4, JSFunction::kSharedFunctionInfoOffset));
|
| - __ ldr(r3,
|
| - FieldMemOperand(r3, SharedFunctionInfo::kFormalParameterCountOffset));
|
| - __ LoadRoot(r2, Heap::kTheHoleValueRootIndex);
|
| - Label push_argument_holes, push_frame;
|
| - __ bind(&push_argument_holes);
|
| - __ sub(r3, r3, Operand(Smi::FromInt(1)), SetCC);
|
| - __ b(mi, &push_frame);
|
| - __ push(r2);
|
| - __ 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);
|
| - __ bl(&resume_frame);
|
| - __ jmp(&done);
|
| - __ bind(&resume_frame);
|
| - // lr = return address.
|
| - // fp = caller's frame pointer.
|
| - // pp = caller's constant pool (if FLAG_enable_embedded_constant_pool),
|
| - // cp = callee's context,
|
| - // r4 = callee's JS function.
|
| - __ PushFixedFrame(r4);
|
| - // Adjust FP to point to saved FP.
|
| - __ add(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp));
|
| -
|
| - // Load the operand stack size.
|
| - __ ldr(r3, FieldMemOperand(r1, JSGeneratorObject::kOperandStackOffset));
|
| - __ ldr(r3, FieldMemOperand(r3, FixedArray::kLengthOffset));
|
| - __ SmiUntag(r3);
|
| -
|
| - // 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(r3, Operand(0));
|
| - __ b(ne, &slow_resume);
|
| - __ ldr(r3, FieldMemOperand(r4, JSFunction::kCodeEntryOffset));
|
| -
|
| - { ConstantPoolUnavailableScope constant_pool_unavailable(masm_);
|
| - if (FLAG_enable_embedded_constant_pool) {
|
| - // Load the new code object's constant pool pointer.
|
| - __ LoadConstantPoolPointerRegisterFromCodeTargetAddress(r3);
|
| - }
|
| -
|
| - __ ldr(r2, FieldMemOperand(r1, JSGeneratorObject::kContinuationOffset));
|
| - __ SmiUntag(r2);
|
| - __ add(r3, r3, r2);
|
| - __ mov(r2, Operand(Smi::FromInt(JSGeneratorObject::kGeneratorExecuting)));
|
| - __ str(r2, FieldMemOperand(r1, JSGeneratorObject::kContinuationOffset));
|
| - __ Jump(r3);
|
| - }
|
| - __ 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(r3, r3, Operand(1), SetCC);
|
| - __ b(mi, &call_resume);
|
| - __ push(r2);
|
| - __ b(&push_operand_holes);
|
| - __ bind(&call_resume);
|
| - DCHECK(!result_register().is(r1));
|
| - __ Push(r1, result_register());
|
| - __ Push(Smi::FromInt(resume_mode));
|
| - __ CallRuntime(Runtime::kResumeJSGeneratorObject, 3);
|
| - // Not reached: the runtime call returns elsewhere.
|
| - __ stop("not-reached");
|
| -
|
| - __ 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, r0, r2, r3, &gc_required, TAG_OBJECT);
|
| - __ jmp(&allocated);
|
| -
|
| - __ bind(&gc_required);
|
| - __ Push(Smi::FromInt(instance_size));
|
| - __ CallRuntime(Runtime::kAllocateInNewSpace, 1);
|
| - __ ldr(context_register(),
|
| - MemOperand(fp, StandardFrameConstants::kContextOffset));
|
| -
|
| - __ bind(&allocated);
|
| - __ ldr(r1, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX));
|
| - __ ldr(r1, FieldMemOperand(r1, GlobalObject::kNativeContextOffset));
|
| - __ ldr(r1, ContextOperand(r1, Context::ITERATOR_RESULT_MAP_INDEX));
|
| - __ pop(r2);
|
| - __ mov(r3, Operand(isolate()->factory()->ToBoolean(done)));
|
| - __ mov(r4, Operand(isolate()->factory()->empty_fixed_array()));
|
| - __ str(r1, FieldMemOperand(r0, HeapObject::kMapOffset));
|
| - __ str(r4, FieldMemOperand(r0, JSObject::kPropertiesOffset));
|
| - __ str(r4, FieldMemOperand(r0, JSObject::kElementsOffset));
|
| - __ str(r2,
|
| - FieldMemOperand(r0, JSGeneratorObject::kResultValuePropertyOffset));
|
| - __ str(r3,
|
| - FieldMemOperand(r0, JSGeneratorObject::kResultDonePropertyOffset));
|
| -
|
| - // Only the value field needs a write barrier, as the other values are in the
|
| - // root set.
|
| - __ RecordWriteField(r0, JSGeneratorObject::kResultValuePropertyOffset,
|
| - r2, r3, kLRHasBeenSaved, kDontSaveFPRegs);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) {
|
| - SetExpressionPosition(prop);
|
| - Literal* key = prop->key()->AsLiteral();
|
| - DCHECK(!prop->IsSuperAccess());
|
| -
|
| - __ mov(LoadDescriptor::NameRegister(), Operand(key->value()));
|
| - __ mov(LoadDescriptor::SlotRegister(),
|
| - Operand(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(key->value());
|
| - __ Push(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(),
|
| - Operand(SmiFromSlot(prop->PropertyFeedbackSlot())));
|
| - CallIC(ic);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitKeyedSuperPropertyLoad(Property* prop) {
|
| - // Stack: receiver, home_object, key.
|
| - SetExpressionPosition(prop);
|
| - __ Push(Smi::FromInt(language_mode()));
|
| - __ CallRuntime(Runtime::kLoadKeyedFromSuper, 4);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr,
|
| - Token::Value op,
|
| - Expression* left_expr,
|
| - Expression* right_expr) {
|
| - Label done, smi_case, stub_call;
|
| -
|
| - Register scratch1 = r2;
|
| - Register scratch2 = r3;
|
| -
|
| - // Get the arguments.
|
| - Register left = r1;
|
| - Register right = r0;
|
| - __ pop(left);
|
| -
|
| - // Perform combined smi check on both operands.
|
| - __ orr(scratch1, left, Operand(right));
|
| - STATIC_ASSERT(kSmiTag == 0);
|
| - JumpPatchSite patch_site(masm_);
|
| - patch_site.EmitJumpIfSmi(scratch1, &smi_case);
|
| -
|
| - __ bind(&stub_call);
|
| - Handle<Code> code =
|
| - CodeFactory::BinaryOpIC(isolate(), op, strength(language_mode())).code();
|
| - CallIC(code, expr->BinaryOperationFeedbackId());
|
| - patch_site.EmitPatchInfo();
|
| - __ jmp(&done);
|
| -
|
| - __ bind(&smi_case);
|
| - // Smi case. This code works the same way as the smi-smi case in the type
|
| - // recording binary operation stub, see
|
| - switch (op) {
|
| - case Token::SAR:
|
| - __ GetLeastBitsFromSmi(scratch1, right, 5);
|
| - __ mov(right, Operand(left, ASR, scratch1));
|
| - __ bic(right, right, Operand(kSmiTagMask));
|
| - break;
|
| - case Token::SHL: {
|
| - __ SmiUntag(scratch1, left);
|
| - __ GetLeastBitsFromSmi(scratch2, right, 5);
|
| - __ mov(scratch1, Operand(scratch1, LSL, scratch2));
|
| - __ TrySmiTag(right, scratch1, &stub_call);
|
| - break;
|
| - }
|
| - case Token::SHR: {
|
| - __ SmiUntag(scratch1, left);
|
| - __ GetLeastBitsFromSmi(scratch2, right, 5);
|
| - __ mov(scratch1, Operand(scratch1, LSR, scratch2));
|
| - __ tst(scratch1, Operand(0xc0000000));
|
| - __ b(ne, &stub_call);
|
| - __ SmiTag(right, scratch1);
|
| - break;
|
| - }
|
| - case Token::ADD:
|
| - __ add(scratch1, left, Operand(right), SetCC);
|
| - __ b(vs, &stub_call);
|
| - __ mov(right, scratch1);
|
| - break;
|
| - case Token::SUB:
|
| - __ sub(scratch1, left, Operand(right), SetCC);
|
| - __ b(vs, &stub_call);
|
| - __ mov(right, scratch1);
|
| - break;
|
| - case Token::MUL: {
|
| - __ SmiUntag(ip, right);
|
| - __ smull(scratch1, scratch2, left, ip);
|
| - __ mov(ip, Operand(scratch1, ASR, 31));
|
| - __ cmp(ip, Operand(scratch2));
|
| - __ b(ne, &stub_call);
|
| - __ cmp(scratch1, Operand::Zero());
|
| - __ mov(right, Operand(scratch1), LeaveCC, ne);
|
| - __ b(ne, &done);
|
| - __ add(scratch2, right, Operand(left), SetCC);
|
| - __ mov(right, Operand(Smi::FromInt(0)), LeaveCC, pl);
|
| - __ b(mi, &stub_call);
|
| - break;
|
| - }
|
| - case Token::BIT_OR:
|
| - __ orr(right, left, Operand(right));
|
| - break;
|
| - case Token::BIT_AND:
|
| - __ and_(right, left, Operand(right));
|
| - break;
|
| - case Token::BIT_XOR:
|
| - __ eor(right, left, Operand(right));
|
| - break;
|
| - default:
|
| - UNREACHABLE();
|
| - }
|
| -
|
| - __ bind(&done);
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit,
|
| - int* used_store_slots) {
|
| - // Constructor is in r0.
|
| - DCHECK(lit != NULL);
|
| - __ push(r0);
|
| -
|
| - // No access check is needed here since the constructor is created by the
|
| - // class literal.
|
| - Register scratch = r1;
|
| - __ ldr(scratch,
|
| - FieldMemOperand(r0, 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()) {
|
| - __ ldr(scratch, MemOperand(sp, kPointerSize)); // constructor
|
| - } else {
|
| - __ ldr(scratch, MemOperand(sp, 0)); // prototype
|
| - }
|
| - __ push(scratch);
|
| - 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(r0);
|
| - }
|
| -
|
| - 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:
|
| - __ mov(r0, Operand(Smi::FromInt(DONT_ENUM)));
|
| - __ push(r0);
|
| - __ CallRuntime(Runtime::kDefineGetterPropertyUnchecked, 4);
|
| - break;
|
| -
|
| - case ObjectLiteral::Property::SETTER:
|
| - __ mov(r0, Operand(Smi::FromInt(DONT_ENUM)));
|
| - __ push(r0);
|
| - __ CallRuntime(Runtime::kDefineSetterPropertyUnchecked, 4);
|
| - break;
|
| -
|
| - default:
|
| - UNREACHABLE();
|
| - }
|
| - }
|
| -
|
| - // prototype
|
| - __ CallRuntime(Runtime::kToFastProperties, 1);
|
| -
|
| - // constructor
|
| - __ CallRuntime(Runtime::kToFastProperties, 1);
|
| -
|
| - if (is_strong(language_mode())) {
|
| - __ ldr(scratch,
|
| - FieldMemOperand(r0, JSFunction::kPrototypeOrInitialMapOffset));
|
| - __ push(r0);
|
| - __ 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(r1);
|
| - 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(r0);
|
| -}
|
| -
|
| -
|
| -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(r0); // Preserve value.
|
| - VisitForAccumulatorValue(prop->obj());
|
| - __ Move(StoreDescriptor::ReceiverRegister(), r0);
|
| - __ pop(StoreDescriptor::ValueRegister()); // Restore value.
|
| - __ mov(StoreDescriptor::NameRegister(),
|
| - Operand(prop->key()->AsLiteral()->value()));
|
| - if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
|
| - CallStoreIC();
|
| - break;
|
| - }
|
| - case NAMED_SUPER_PROPERTY: {
|
| - __ Push(r0);
|
| - VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
|
| - VisitForAccumulatorValue(
|
| - prop->obj()->AsSuperPropertyReference()->home_object());
|
| - // stack: value, this; r0: home_object
|
| - Register scratch = r2;
|
| - Register scratch2 = r3;
|
| - __ mov(scratch, result_register()); // home_object
|
| - __ ldr(r0, MemOperand(sp, kPointerSize)); // value
|
| - __ ldr(scratch2, MemOperand(sp, 0)); // this
|
| - __ str(scratch2, MemOperand(sp, kPointerSize)); // this
|
| - __ str(scratch, MemOperand(sp, 0)); // home_object
|
| - // stack: this, home_object; r0: value
|
| - EmitNamedSuperPropertyStore(prop);
|
| - break;
|
| - }
|
| - case KEYED_SUPER_PROPERTY: {
|
| - __ Push(r0);
|
| - VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
|
| - VisitForStackValue(
|
| - prop->obj()->AsSuperPropertyReference()->home_object());
|
| - VisitForAccumulatorValue(prop->key());
|
| - Register scratch = r2;
|
| - Register scratch2 = r3;
|
| - __ ldr(scratch2, MemOperand(sp, 2 * kPointerSize)); // value
|
| - // stack: value, this, home_object; r0: key, r3: value
|
| - __ ldr(scratch, MemOperand(sp, kPointerSize)); // this
|
| - __ str(scratch, MemOperand(sp, 2 * kPointerSize));
|
| - __ ldr(scratch, MemOperand(sp, 0)); // home_object
|
| - __ str(scratch, MemOperand(sp, kPointerSize));
|
| - __ str(r0, MemOperand(sp, 0));
|
| - __ Move(r0, scratch2);
|
| - // stack: this, home_object, key; r0: value.
|
| - EmitKeyedSuperPropertyStore(prop);
|
| - break;
|
| - }
|
| - case KEYED_PROPERTY: {
|
| - __ push(r0); // Preserve value.
|
| - VisitForStackValue(prop->obj());
|
| - VisitForAccumulatorValue(prop->key());
|
| - __ Move(StoreDescriptor::NameRegister(), r0);
|
| - __ Pop(StoreDescriptor::ValueRegister(),
|
| - StoreDescriptor::ReceiverRegister());
|
| - if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
|
| - Handle<Code> ic =
|
| - CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
|
| - CallIC(ic);
|
| - break;
|
| - }
|
| - }
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot(
|
| - Variable* var, MemOperand location) {
|
| - __ str(result_register(), location);
|
| - if (var->IsContextSlot()) {
|
| - // RecordWrite may destroy all its register arguments.
|
| - __ mov(r3, result_register());
|
| - int offset = Context::SlotOffset(var->index());
|
| - __ RecordWriteContextSlot(
|
| - r1, offset, r3, r2, kLRHasBeenSaved, kDontSaveFPRegs);
|
| - }
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op,
|
| - FeedbackVectorICSlot slot) {
|
| - if (var->IsUnallocated()) {
|
| - // Global var, const, or let.
|
| - __ mov(StoreDescriptor::NameRegister(), Operand(var->name()));
|
| - __ ldr(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(),
|
| - Operand(Smi::FromInt(depth)));
|
| - __ mov(StoreGlobalViaContextDescriptor::SlotRegister(),
|
| - Operand(Smi::FromInt(slot_index)));
|
| - __ mov(StoreGlobalViaContextDescriptor::NameRegister(),
|
| - Operand(var->name()));
|
| - DCHECK(StoreGlobalViaContextDescriptor::ValueRegister().is(r0));
|
| - 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, r1);
|
| - __ ldr(r3, location);
|
| - __ CompareRoot(r3, Heap::kTheHoleValueRootIndex);
|
| - __ b(ne, &assign);
|
| - __ mov(r3, Operand(var->name()));
|
| - __ push(r3);
|
| - __ CallRuntime(Runtime::kThrowReferenceError, 1);
|
| - // Perform the assignment.
|
| - __ 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, r1);
|
| - __ ldr(r3, location);
|
| - __ CompareRoot(r3, Heap::kTheHoleValueRootIndex);
|
| - __ b(ne, &const_error);
|
| - __ mov(r3, Operand(var->name()));
|
| - __ push(r3);
|
| - __ 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, r1);
|
| - __ ldr(r3, location);
|
| - __ CompareRoot(r3, Heap::kTheHoleValueRootIndex);
|
| - __ b(eq, &uninitialized_this);
|
| - __ mov(r0, Operand(var->name()));
|
| - __ Push(r0);
|
| - __ 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(r0); // Value.
|
| - __ mov(r1, Operand(var->name()));
|
| - __ mov(r0, Operand(Smi::FromInt(language_mode())));
|
| - __ Push(cp, r1, r0); // Context, name, 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, r1);
|
| - if (generate_debug_code_ && op == Token::INIT_LET) {
|
| - // Check for an uninitialized let binding.
|
| - __ ldr(r2, location);
|
| - __ CompareRoot(r2, Heap::kTheHoleValueRootIndex);
|
| - __ Check(eq, 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(r0);
|
| - __ mov(r0, Operand(var->name()));
|
| - __ Push(cp, r0); // Context and name.
|
| - __ CallRuntime(Runtime::kInitializeLegacyConstLookupSlot, 3);
|
| - } else {
|
| - DCHECK(var->IsStackAllocated() || var->IsContextSlot());
|
| - Label skip;
|
| - MemOperand location = VarOperand(var, r1);
|
| - __ ldr(r2, location);
|
| - __ CompareRoot(r2, Heap::kTheHoleValueRootIndex);
|
| - __ b(ne, &skip);
|
| - 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.
|
| - Property* prop = expr->target()->AsProperty();
|
| - DCHECK(prop != NULL);
|
| - DCHECK(prop->key()->IsLiteral());
|
| -
|
| - __ mov(StoreDescriptor::NameRegister(),
|
| - Operand(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(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) {
|
| - // Assignment to named property of super.
|
| - // r0 : value
|
| - // stack : receiver ('this'), home_object
|
| - DCHECK(prop != NULL);
|
| - Literal* key = prop->key()->AsLiteral();
|
| - DCHECK(key != NULL);
|
| -
|
| - __ Push(key->value());
|
| - __ Push(r0);
|
| - __ CallRuntime((is_strict(language_mode()) ? Runtime::kStoreToSuper_Strict
|
| - : Runtime::kStoreToSuper_Sloppy),
|
| - 4);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitKeyedSuperPropertyStore(Property* prop) {
|
| - // Assignment to named property of super.
|
| - // r0 : value
|
| - // stack : receiver ('this'), home_object, key
|
| - DCHECK(prop != NULL);
|
| -
|
| - __ Push(r0);
|
| - __ 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.
|
| - __ Pop(StoreDescriptor::ReceiverRegister(), StoreDescriptor::NameRegister());
|
| - DCHECK(StoreDescriptor::ValueRegister().is(r0));
|
| -
|
| - 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(r0);
|
| -}
|
| -
|
| -
|
| -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(), r0);
|
| - 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());
|
| - __ Move(LoadDescriptor::NameRegister(), r0);
|
| - __ pop(LoadDescriptor::ReceiverRegister());
|
| - 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(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::CallIC(Handle<Code> code,
|
| - TypeFeedbackId ast_id) {
|
| - ic_total_count_++;
|
| - // All calls must have a predictable size in full-codegen code to ensure that
|
| - // the debugger can patch them correctly.
|
| - __ Call(code, RelocInfo::CODE_TARGET, ast_id, al,
|
| - NEVER_INLINE_TARGET_ADDRESS);
|
| -}
|
| -
|
| -
|
| -// 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.
|
| - __ LoadRoot(ip, Heap::kUndefinedValueRootIndex);
|
| - __ push(ip);
|
| - } else {
|
| - // Load the function from the receiver.
|
| - DCHECK(callee->IsProperty());
|
| - DCHECK(!callee->AsProperty()->IsSuperAccess());
|
| - __ ldr(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0));
|
| - EmitNamedPropertyLoad(callee->AsProperty());
|
| - PrepareForBailoutForId(callee->AsProperty()->LoadId(), TOS_REG);
|
| - // Push the target function under the receiver.
|
| - __ ldr(ip, MemOperand(sp, 0));
|
| - __ push(ip);
|
| - __ str(r0, MemOperand(sp, kPointerSize));
|
| - }
|
| -
|
| - EmitCall(expr, call_type);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitSuperCallWithLoadIC(Call* expr) {
|
| - Expression* callee = expr->expression();
|
| - DCHECK(callee->IsProperty());
|
| - Property* prop = callee->AsProperty();
|
| - DCHECK(prop->IsSuperAccess());
|
| - SetExpressionPosition(prop);
|
| -
|
| - Literal* key = prop->key()->AsLiteral();
|
| - DCHECK(!key->value()->IsSmi());
|
| - // Load the function from the receiver.
|
| - const Register scratch = r1;
|
| - SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference();
|
| - VisitForStackValue(super_ref->home_object());
|
| - VisitForAccumulatorValue(super_ref->this_var());
|
| - __ Push(r0);
|
| - __ Push(r0);
|
| - __ ldr(scratch, MemOperand(sp, kPointerSize * 2));
|
| - __ Push(scratch);
|
| - __ Push(key->value());
|
| - __ Push(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.
|
| - __ str(r0, MemOperand(sp, kPointerSize));
|
| -
|
| - // 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());
|
| - __ ldr(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0));
|
| - __ Move(LoadDescriptor::NameRegister(), r0);
|
| - EmitKeyedPropertyLoad(callee->AsProperty());
|
| - PrepareForBailoutForId(callee->AsProperty()->LoadId(), TOS_REG);
|
| -
|
| - // Push the target function under the receiver.
|
| - __ ldr(ip, MemOperand(sp, 0));
|
| - __ push(ip);
|
| - __ str(r0, MemOperand(sp, kPointerSize));
|
| -
|
| - 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.
|
| - const Register scratch = r1;
|
| - SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference();
|
| - VisitForStackValue(super_ref->home_object());
|
| - VisitForAccumulatorValue(super_ref->this_var());
|
| - __ Push(r0);
|
| - __ Push(r0);
|
| - __ ldr(scratch, MemOperand(sp, kPointerSize * 2));
|
| - __ Push(scratch);
|
| - VisitForStackValue(prop->key());
|
| - __ Push(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.
|
| - __ str(r0, MemOperand(sp, kPointerSize));
|
| -
|
| - // 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();
|
| - __ mov(r3, Operand(SmiFromSlot(expr->CallFeedbackICSlot())));
|
| - __ ldr(r1, MemOperand(sp, (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.
|
| - __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
|
| - context()->DropAndPlug(1, r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitResolvePossiblyDirectEval(int arg_count) {
|
| - // r4: copy of the first argument or undefined if it doesn't exist.
|
| - if (arg_count > 0) {
|
| - __ ldr(r4, MemOperand(sp, arg_count * kPointerSize));
|
| - } else {
|
| - __ LoadRoot(r4, Heap::kUndefinedValueRootIndex);
|
| - }
|
| -
|
| - // r3: the receiver of the enclosing function.
|
| - __ ldr(r3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
|
| -
|
| - // r2: language mode.
|
| - __ mov(r2, Operand(Smi::FromInt(language_mode())));
|
| -
|
| - // r1: the start position of the scope the calls resides in.
|
| - __ mov(r1, Operand(Smi::FromInt(scope()->start_position())));
|
| -
|
| - // Do the runtime call.
|
| - __ Push(r4, r3, r2, r1);
|
| - __ 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 r0)
|
| - // and the object holding it (returned in edx).
|
| - DCHECK(!context_register().is(r2));
|
| - __ mov(r2, Operand(callee->name()));
|
| - __ Push(context_register(), r2);
|
| - __ CallRuntime(Runtime::kLoadLookupSlot, 2);
|
| - __ Push(r0, r1); // Function, 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;
|
| - __ b(&call);
|
| - __ bind(&done);
|
| - // Push function.
|
| - __ push(r0);
|
| - // The receiver is implicitly the global receiver. Indicate this
|
| - // by passing the hole to the call function stub.
|
| - __ LoadRoot(r1, Heap::kUndefinedValueRootIndex);
|
| - __ push(r1);
|
| - __ bind(&call);
|
| - }
|
| - } else {
|
| - VisitForStackValue(callee);
|
| - // refEnv.WithBaseObject()
|
| - __ LoadRoot(r2, Heap::kUndefinedValueRootIndex);
|
| - __ push(r2); // Reserved receiver slot.
|
| - }
|
| -}
|
| -
|
| -
|
| -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_asResolvePossiblyDirectEval 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.
|
| - __ ldr(r1, MemOperand(sp, (arg_count + 1) * kPointerSize));
|
| - __ push(r1);
|
| - EmitResolvePossiblyDirectEval(arg_count);
|
| -
|
| - // Touch up the stack with the resolved function.
|
| - __ str(r0, MemOperand(sp, (arg_count + 1) * kPointerSize));
|
| -
|
| - PrepareForBailoutForId(expr->EvalId(), NO_REGISTERS);
|
| -
|
| - // Record source position for debugger.
|
| - SetCallPosition(expr, arg_count);
|
| - CallFunctionStub stub(isolate(), arg_count, NO_CALL_FUNCTION_FLAGS);
|
| - __ ldr(r1, MemOperand(sp, (arg_count + 1) * kPointerSize));
|
| - __ CallStub(&stub);
|
| - RecordJSReturnSite(expr);
|
| - // Restore context register.
|
| - __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
|
| - context()->DropAndPlug(1, r0);
|
| - } 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);
|
| - __ LoadRoot(r1, Heap::kUndefinedValueRootIndex);
|
| - __ push(r1);
|
| - // 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 r1 and r0.
|
| - __ mov(r0, Operand(arg_count));
|
| - __ ldr(r1, MemOperand(sp, 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);
|
| - }
|
| -
|
| - __ Move(r2, FeedbackVector());
|
| - __ mov(r3, Operand(SmiFromSlot(expr->CallNewFeedbackSlot())));
|
| -
|
| - CallConstructStub stub(isolate(), RECORD_CONSTRUCTOR_TARGET);
|
| - __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL);
|
| - PrepareForBailoutForId(expr->ReturnId(), TOS_REG);
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -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 r4.
|
| - VisitForAccumulatorValue(super_call_ref->new_target_var());
|
| - __ mov(r4, result_register());
|
| -
|
| - // Load function and argument count into r1 and r0.
|
| - __ mov(r0, Operand(arg_count));
|
| - __ ldr(r1, MemOperand(sp, 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);
|
| - */
|
| - }
|
| -
|
| - __ Move(r2, FeedbackVector());
|
| - __ mov(r3, Operand(SmiFromSlot(expr->CallFeedbackSlot())));
|
| -
|
| - CallConstructStub stub(isolate(), SUPER_CALL_RECORD_TARGET);
|
| - __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL);
|
| -
|
| - RecordJSReturnSite(expr);
|
| -
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -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);
|
| - __ SmiTst(r0);
|
| - Split(eq, 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);
|
| - __ NonNegativeSmiTst(r0);
|
| - Split(eq, 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(r0, if_false);
|
| - __ LoadRoot(ip, Heap::kNullValueRootIndex);
|
| - __ cmp(r0, ip);
|
| - __ b(eq, if_true);
|
| - __ ldr(r2, FieldMemOperand(r0, HeapObject::kMapOffset));
|
| - // Undetectable objects behave like undefined when tested with typeof.
|
| - __ ldrb(r1, FieldMemOperand(r2, Map::kBitFieldOffset));
|
| - __ tst(r1, Operand(1 << Map::kIsUndetectable));
|
| - __ b(ne, if_false);
|
| - __ ldrb(r1, FieldMemOperand(r2, Map::kInstanceTypeOffset));
|
| - __ cmp(r1, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE));
|
| - __ b(lt, if_false);
|
| - __ cmp(r1, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE));
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(le, 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(r0, if_false);
|
| - __ CompareObjectType(r0, r1, r1, FIRST_SPEC_OBJECT_TYPE);
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(ge, 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(r0, if_false);
|
| - __ ldr(r1, FieldMemOperand(r0, HeapObject::kMapOffset));
|
| - __ ldrb(r1, FieldMemOperand(r1, Map::kBitFieldOffset));
|
| - __ tst(r1, Operand(1 << Map::kIsUndetectable));
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(ne, 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(r0);
|
| -
|
| - __ ldr(r1, FieldMemOperand(r0, HeapObject::kMapOffset));
|
| - __ ldrb(ip, FieldMemOperand(r1, Map::kBitField2Offset));
|
| - __ tst(ip, Operand(1 << Map::kStringWrapperSafeForDefaultValueOf));
|
| - __ b(ne, &skip_lookup);
|
| -
|
| - // Check for fast case object. Generate false result for slow case object.
|
| - __ ldr(r2, FieldMemOperand(r0, JSObject::kPropertiesOffset));
|
| - __ ldr(r2, FieldMemOperand(r2, HeapObject::kMapOffset));
|
| - __ LoadRoot(ip, Heap::kHashTableMapRootIndex);
|
| - __ cmp(r2, ip);
|
| - __ b(eq, if_false);
|
| -
|
| - // Look for valueOf name 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(r3, r1);
|
| - __ cmp(r3, Operand::Zero());
|
| - __ b(eq, &done);
|
| -
|
| - __ LoadInstanceDescriptors(r1, r4);
|
| - // r4: descriptor array.
|
| - // r3: valid entries in the descriptor array.
|
| - __ mov(ip, Operand(DescriptorArray::kDescriptorSize));
|
| - __ mul(r3, r3, ip);
|
| - // Calculate location of the first key name.
|
| - __ add(r4, r4, Operand(DescriptorArray::kFirstOffset - kHeapObjectTag));
|
| - // Calculate the end of the descriptor array.
|
| - __ mov(r2, r4);
|
| - __ add(r2, r2, Operand(r3, LSL, kPointerSizeLog2));
|
| -
|
| - // Loop through all the keys in the descriptor array. If one of these is the
|
| - // string "valueOf" the result is false.
|
| - // The use of ip to store the valueOf string assumes that it is not otherwise
|
| - // used in the loop below.
|
| - __ mov(ip, Operand(isolate()->factory()->value_of_string()));
|
| - __ jmp(&entry);
|
| - __ bind(&loop);
|
| - __ ldr(r3, MemOperand(r4, 0));
|
| - __ cmp(r3, ip);
|
| - __ b(eq, if_false);
|
| - __ add(r4, r4, Operand(DescriptorArray::kDescriptorSize * kPointerSize));
|
| - __ bind(&entry);
|
| - __ cmp(r4, Operand(r2));
|
| - __ b(ne, &loop);
|
| -
|
| - __ bind(&done);
|
| -
|
| - // Set the bit in the map to indicate that there is no local valueOf field.
|
| - __ ldrb(r2, FieldMemOperand(r1, Map::kBitField2Offset));
|
| - __ orr(r2, r2, Operand(1 << Map::kStringWrapperSafeForDefaultValueOf));
|
| - __ strb(r2, FieldMemOperand(r1, Map::kBitField2Offset));
|
| -
|
| - __ 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.
|
| - __ ldr(r2, FieldMemOperand(r1, Map::kPrototypeOffset));
|
| - __ JumpIfSmi(r2, if_false);
|
| - __ ldr(r2, FieldMemOperand(r2, HeapObject::kMapOffset));
|
| - __ ldr(r3, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX));
|
| - __ ldr(r3, FieldMemOperand(r3, GlobalObject::kNativeContextOffset));
|
| - __ ldr(r3, ContextOperand(r3, Context::STRING_FUNCTION_PROTOTYPE_MAP_INDEX));
|
| - __ cmp(r2, r3);
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(eq, 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(r0, if_false);
|
| - __ CompareObjectType(r0, r1, r2, JS_FUNCTION_TYPE);
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(eq, 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);
|
| -
|
| - __ CheckMap(r0, r1, Heap::kHeapNumberMapRootIndex, if_false, DO_SMI_CHECK);
|
| - __ ldr(r2, FieldMemOperand(r0, HeapNumber::kExponentOffset));
|
| - __ ldr(r1, FieldMemOperand(r0, HeapNumber::kMantissaOffset));
|
| - __ cmp(r2, Operand(0x80000000));
|
| - __ cmp(r1, Operand(0x00000000), eq);
|
| -
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(eq, 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(r0, if_false);
|
| - __ CompareObjectType(r0, r1, r1, JS_ARRAY_TYPE);
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(eq, 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(r0, if_false);
|
| - __ CompareObjectType(r0, r1, r1, JS_TYPED_ARRAY_TYPE);
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(eq, 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(r0, if_false);
|
| - __ CompareObjectType(r0, r1, r1, JS_REGEXP_TYPE);
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(eq, 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(r0, if_false);
|
| - Register map = r1;
|
| - Register type_reg = r2;
|
| - __ ldr(map, FieldMemOperand(r0, HeapObject::kMapOffset));
|
| - __ ldrb(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset));
|
| - __ sub(type_reg, type_reg, Operand(FIRST_JS_PROXY_TYPE));
|
| - __ cmp(type_reg, Operand(LAST_JS_PROXY_TYPE - FIRST_JS_PROXY_TYPE));
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(ls, 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.
|
| - __ ldr(r2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
|
| -
|
| - // Skip the arguments adaptor frame if it exists.
|
| - __ ldr(r1, MemOperand(r2, StandardFrameConstants::kContextOffset));
|
| - __ cmp(r1, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
|
| - __ ldr(r2, MemOperand(r2, StandardFrameConstants::kCallerFPOffset), eq);
|
| -
|
| - // Check the marker in the calling frame.
|
| - __ ldr(r1, MemOperand(r2, StandardFrameConstants::kMarkerOffset));
|
| - __ cmp(r1, Operand(Smi::FromInt(StackFrame::CONSTRUCT)));
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(eq, 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(r1);
|
| - __ cmp(r0, r1);
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(eq, 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 r0.
|
| - VisitForAccumulatorValue(args->at(0));
|
| - __ mov(r1, r0);
|
| - __ mov(r0, Operand(Smi::FromInt(info_->scope()->num_parameters())));
|
| - ArgumentsAccessStub stub(isolate(), ArgumentsAccessStub::READ_ELEMENT);
|
| - __ CallStub(&stub);
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitArgumentsLength(CallRuntime* expr) {
|
| - DCHECK(expr->arguments()->length() == 0);
|
| -
|
| - // Get the number of formal parameters.
|
| - __ mov(r0, Operand(Smi::FromInt(info_->scope()->num_parameters())));
|
| -
|
| - // Check if the calling frame is an arguments adaptor frame.
|
| - __ ldr(r2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
|
| - __ ldr(r3, MemOperand(r2, StandardFrameConstants::kContextOffset));
|
| - __ cmp(r3, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
|
| -
|
| - // Arguments adaptor case: Read the arguments length from the
|
| - // adaptor frame.
|
| - __ ldr(r0, MemOperand(r2, ArgumentsAdaptorFrameConstants::kLengthOffset), eq);
|
| -
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -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(r0, &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);
|
| - __ CompareObjectType(r0, r0, r1, FIRST_SPEC_OBJECT_TYPE);
|
| - // Map is now in r0.
|
| - __ b(lt, &null);
|
| - STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE ==
|
| - FIRST_SPEC_OBJECT_TYPE + 1);
|
| - __ b(eq, &function);
|
| -
|
| - __ cmp(r1, Operand(LAST_SPEC_OBJECT_TYPE));
|
| - STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE ==
|
| - LAST_SPEC_OBJECT_TYPE - 1);
|
| - __ b(eq, &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.
|
| - Register instance_type = r2;
|
| - __ GetMapConstructor(r0, r0, r1, instance_type);
|
| - __ cmp(instance_type, Operand(JS_FUNCTION_TYPE));
|
| - __ b(ne, &non_function_constructor);
|
| -
|
| - // r0 now contains the constructor function. Grab the
|
| - // instance class name from there.
|
| - __ ldr(r0, FieldMemOperand(r0, JSFunction::kSharedFunctionInfoOffset));
|
| - __ ldr(r0, FieldMemOperand(r0, SharedFunctionInfo::kInstanceClassNameOffset));
|
| - __ b(&done);
|
| -
|
| - // Functions have class 'Function'.
|
| - __ bind(&function);
|
| - __ LoadRoot(r0, Heap::kFunction_stringRootIndex);
|
| - __ jmp(&done);
|
| -
|
| - // Objects with a non-function constructor have class 'Object'.
|
| - __ bind(&non_function_constructor);
|
| - __ LoadRoot(r0, Heap::kObject_stringRootIndex);
|
| - __ jmp(&done);
|
| -
|
| - // Non-JS objects have class null.
|
| - __ bind(&null);
|
| - __ LoadRoot(r0, Heap::kNullValueRootIndex);
|
| -
|
| - // All done.
|
| - __ bind(&done);
|
| -
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -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(r0, &done);
|
| - // If the object is not a value type, return the object.
|
| - __ CompareObjectType(r0, r1, r1, JS_VALUE_TYPE);
|
| - __ ldr(r0, FieldMemOperand(r0, JSValue::kValueOffset), eq);
|
| -
|
| - __ bind(&done);
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -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(r0, if_false);
|
| - __ CompareObjectType(r0, r1, r1, JS_DATE_TYPE);
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(eq, 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 = r0;
|
| - Register result = r0;
|
| - Register scratch0 = r9;
|
| - Register scratch1 = r1;
|
| -
|
| - if (index->value() == 0) {
|
| - __ ldr(result, FieldMemOperand(object, JSDate::kValueOffset));
|
| - } else {
|
| - Label runtime, done;
|
| - if (index->value() < JSDate::kFirstUncachedField) {
|
| - ExternalReference stamp = ExternalReference::date_cache_stamp(isolate());
|
| - __ mov(scratch1, Operand(stamp));
|
| - __ ldr(scratch1, MemOperand(scratch1));
|
| - __ ldr(scratch0, FieldMemOperand(object, JSDate::kCacheStampOffset));
|
| - __ cmp(scratch1, scratch0);
|
| - __ b(ne, &runtime);
|
| - __ ldr(result, FieldMemOperand(object, JSDate::kValueOffset +
|
| - kPointerSize * index->value()));
|
| - __ jmp(&done);
|
| - }
|
| - __ bind(&runtime);
|
| - __ PrepareCallCFunction(2, scratch1);
|
| - __ mov(r1, Operand(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 = r0;
|
| - Register index = r1;
|
| - Register value = r2;
|
| -
|
| - VisitForStackValue(args->at(0)); // index
|
| - VisitForStackValue(args->at(1)); // value
|
| - VisitForAccumulatorValue(args->at(2)); // string
|
| - __ Pop(index, value);
|
| -
|
| - if (FLAG_debug_code) {
|
| - __ SmiTst(value);
|
| - __ Check(eq, kNonSmiValue);
|
| - __ SmiTst(index);
|
| - __ Check(eq, kNonSmiIndex);
|
| - __ SmiUntag(index, index);
|
| - static const uint32_t one_byte_seq_type = kSeqStringTag | kOneByteStringTag;
|
| - __ EmitSeqStringSetCharCheck(string, index, value, one_byte_seq_type);
|
| - __ SmiTag(index, index);
|
| - }
|
| -
|
| - __ SmiUntag(value, value);
|
| - __ add(ip,
|
| - string,
|
| - Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag));
|
| - __ strb(value, MemOperand(ip, index, LSR, kSmiTagSize));
|
| - context()->Plug(string);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitTwoByteSeqStringSetChar(CallRuntime* expr) {
|
| - ZoneList<Expression*>* args = expr->arguments();
|
| - DCHECK_EQ(3, args->length());
|
| -
|
| - Register string = r0;
|
| - Register index = r1;
|
| - Register value = r2;
|
| -
|
| - VisitForStackValue(args->at(0)); // index
|
| - VisitForStackValue(args->at(1)); // value
|
| - VisitForAccumulatorValue(args->at(2)); // string
|
| - __ Pop(index, value);
|
| -
|
| - if (FLAG_debug_code) {
|
| - __ SmiTst(value);
|
| - __ Check(eq, kNonSmiValue);
|
| - __ SmiTst(index);
|
| - __ Check(eq, kNonSmiIndex);
|
| - __ SmiUntag(index, index);
|
| - static const uint32_t two_byte_seq_type = kSeqStringTag | kTwoByteStringTag;
|
| - __ EmitSeqStringSetCharCheck(string, index, value, two_byte_seq_type);
|
| - __ SmiTag(index, index);
|
| - }
|
| -
|
| - __ SmiUntag(value, value);
|
| - __ add(ip,
|
| - string,
|
| - Operand(SeqTwoByteString::kHeaderSize - kHeapObjectTag));
|
| - STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0);
|
| - __ strh(value, MemOperand(ip, index));
|
| - 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(r1); // r0 = value. r1 = object.
|
| -
|
| - Label done;
|
| - // If the object is a smi, return the value.
|
| - __ JumpIfSmi(r1, &done);
|
| -
|
| - // If the object is not a value type, return the value.
|
| - __ CompareObjectType(r1, r2, r2, JS_VALUE_TYPE);
|
| - __ b(ne, &done);
|
| -
|
| - // Store the value.
|
| - __ str(r0, FieldMemOperand(r1, JSValue::kValueOffset));
|
| - // Update the write barrier. Save the value as it will be
|
| - // overwritten by the write barrier code and is needed afterward.
|
| - __ mov(r2, r0);
|
| - __ RecordWriteField(
|
| - r1, JSValue::kValueOffset, r2, r3, kLRHasBeenSaved, kDontSaveFPRegs);
|
| -
|
| - __ bind(&done);
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitNumberToString(CallRuntime* expr) {
|
| - ZoneList<Expression*>* args = expr->arguments();
|
| - DCHECK_EQ(args->length(), 1);
|
| - // Load the argument into r0 and call the stub.
|
| - VisitForAccumulatorValue(args->at(0));
|
| -
|
| - NumberToStringStub stub(isolate());
|
| - __ CallStub(&stub);
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitStringCharFromCode(CallRuntime* expr) {
|
| - ZoneList<Expression*>* args = expr->arguments();
|
| - DCHECK(args->length() == 1);
|
| - VisitForAccumulatorValue(args->at(0));
|
| -
|
| - Label done;
|
| - StringCharFromCodeGenerator generator(r0, r1);
|
| - generator.GenerateFast(masm_);
|
| - __ jmp(&done);
|
| -
|
| - NopRuntimeCallHelper call_helper;
|
| - generator.GenerateSlow(masm_, call_helper);
|
| -
|
| - __ bind(&done);
|
| - context()->Plug(r1);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitStringCharCodeAt(CallRuntime* expr) {
|
| - ZoneList<Expression*>* args = expr->arguments();
|
| - DCHECK(args->length() == 2);
|
| - VisitForStackValue(args->at(0));
|
| - VisitForAccumulatorValue(args->at(1));
|
| -
|
| - Register object = r1;
|
| - Register index = r0;
|
| - Register result = r3;
|
| -
|
| - __ 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.
|
| - __ LoadRoot(result, Heap::kNanValueRootIndex);
|
| - __ jmp(&done);
|
| -
|
| - __ bind(&need_conversion);
|
| - // Load the undefined value into the result register, which will
|
| - // trigger conversion.
|
| - __ LoadRoot(result, Heap::kUndefinedValueRootIndex);
|
| - __ 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 = r1;
|
| - Register index = r0;
|
| - Register scratch = r3;
|
| - Register result = r0;
|
| -
|
| - __ 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.
|
| - __ LoadRoot(result, Heap::kempty_stringRootIndex);
|
| - __ jmp(&done);
|
| -
|
| - __ bind(&need_conversion);
|
| - // Move smi zero into the result register, which will trigger
|
| - // conversion.
|
| - __ mov(result, Operand(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(r1);
|
| - StringAddStub stub(isolate(), STRING_ADD_CHECK_BOTH, NOT_TENURED);
|
| - __ CallStub(&stub);
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -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(r0, &runtime);
|
| - __ CompareObjectType(r0, r1, r1, JS_FUNCTION_TYPE);
|
| - __ b(ne, &runtime);
|
| -
|
| - // InvokeFunction requires the function in r1. Move it in there.
|
| - __ mov(r1, result_register());
|
| - ParameterCount count(arg_count);
|
| - __ InvokeFunction(r1, count, CALL_FUNCTION, NullCallWrapper());
|
| - __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
|
| - __ jmp(&done);
|
| -
|
| - __ bind(&runtime);
|
| - __ push(r0);
|
| - __ CallRuntime(Runtime::kCall, args->length());
|
| - __ bind(&done);
|
| -
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -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 r4.
|
| - __ ldr(r4, MemOperand(sp, 1 * kPointerSize));
|
| -
|
| - // Check if the calling frame is an arguments adaptor frame.
|
| - Label adaptor_frame, args_set_up, runtime;
|
| - __ ldr(r2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
|
| - __ ldr(r3, MemOperand(r2, StandardFrameConstants::kContextOffset));
|
| - __ cmp(r3, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
|
| - __ b(eq, &adaptor_frame);
|
| - // default constructor has no arguments, so no adaptor frame means no args.
|
| - __ mov(r0, Operand::Zero());
|
| - __ b(&args_set_up);
|
| -
|
| - // Copy arguments from adaptor frame.
|
| - {
|
| - __ bind(&adaptor_frame);
|
| - __ ldr(r1, MemOperand(r2, ArgumentsAdaptorFrameConstants::kLengthOffset));
|
| - __ SmiUntag(r1, r1);
|
| - __ mov(r0, r1);
|
| -
|
| - // Get arguments pointer in r2.
|
| - __ add(r2, r2, Operand(r1, LSL, kPointerSizeLog2));
|
| - __ add(r2, r2, Operand(StandardFrameConstants::kCallerSPOffset));
|
| - Label loop;
|
| - __ bind(&loop);
|
| - // Pre-decrement r2 with kPointerSize on each iteration.
|
| - // Pre-decrement in order to skip receiver.
|
| - __ ldr(r3, MemOperand(r2, kPointerSize, NegPreIndex));
|
| - __ Push(r3);
|
| - __ sub(r1, r1, Operand(1));
|
| - __ cmp(r1, Operand::Zero());
|
| - __ b(ne, &loop);
|
| - }
|
| -
|
| - __ bind(&args_set_up);
|
| - __ ldr(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2));
|
| - __ LoadRoot(r2, Heap::kUndefinedValueRootIndex);
|
| -
|
| - CallConstructStub stub(isolate(), SUPER_CONSTRUCTOR_CALL);
|
| - __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL);
|
| -
|
| - __ Drop(1);
|
| -
|
| - context()->Plug(result_register());
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitRegExpConstructResult(CallRuntime* expr) {
|
| - 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(r1);
|
| - __ pop(r2);
|
| - __ CallStub(&stub);
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -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);
|
| - __ LoadRoot(r0, Heap::kUndefinedValueRootIndex);
|
| - context()->Plug(r0);
|
| - return;
|
| - }
|
| -
|
| - VisitForAccumulatorValue(args->at(1));
|
| -
|
| - Register key = r0;
|
| - Register cache = r1;
|
| - __ ldr(cache, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX));
|
| - __ ldr(cache, FieldMemOperand(cache, GlobalObject::kNativeContextOffset));
|
| - __ ldr(cache, ContextOperand(cache, Context::JSFUNCTION_RESULT_CACHES_INDEX));
|
| - __ ldr(cache,
|
| - FieldMemOperand(cache, FixedArray::OffsetOfElementAt(cache_id)));
|
| -
|
| -
|
| - Label done, not_found;
|
| - __ ldr(r2, FieldMemOperand(cache, JSFunctionResultCache::kFingerOffset));
|
| - // r2 now holds finger offset as a smi.
|
| - __ add(r3, cache, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
|
| - // r3 now points to the start of fixed array elements.
|
| - __ ldr(r2, MemOperand::PointerAddressFromSmiKey(r3, r2, PreIndex));
|
| - // Note side effect of PreIndex: r3 now points to the key of the pair.
|
| - __ cmp(key, r2);
|
| - __ b(ne, ¬_found);
|
| -
|
| - __ ldr(r0, MemOperand(r3, kPointerSize));
|
| - __ b(&done);
|
| -
|
| - __ bind(¬_found);
|
| - // Call runtime to perform the lookup.
|
| - __ Push(cache, key);
|
| - __ CallRuntime(Runtime::kGetFromCacheRT, 2);
|
| -
|
| - __ bind(&done);
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) {
|
| - ZoneList<Expression*>* args = expr->arguments();
|
| - 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);
|
| -
|
| - __ ldr(r0, FieldMemOperand(r0, String::kHashFieldOffset));
|
| - __ tst(r0, Operand(String::kContainsCachedArrayIndexMask));
|
| - PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
|
| - Split(eq, 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(r0);
|
| -
|
| - __ ldr(r0, FieldMemOperand(r0, String::kHashFieldOffset));
|
| - __ IndexFromHash(r0, r0);
|
| -
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitFastOneByteArrayJoin(CallRuntime* expr) {
|
| - Label bailout, done, one_char_separator, long_separator, non_trivial_array,
|
| - not_size_one_array, loop, empty_separator_loop, one_char_separator_loop,
|
| - one_char_separator_loop_entry, long_separator_loop;
|
| - ZoneList<Expression*>* args = expr->arguments();
|
| - DCHECK(args->length() == 2);
|
| - VisitForStackValue(args->at(1));
|
| - VisitForAccumulatorValue(args->at(0));
|
| -
|
| - // All aliases of the same register have disjoint lifetimes.
|
| - Register array = r0;
|
| - Register elements = no_reg; // Will be r0.
|
| - Register result = no_reg; // Will be r0.
|
| - Register separator = r1;
|
| - Register array_length = r2;
|
| - Register result_pos = no_reg; // Will be r2
|
| - Register string_length = r3;
|
| - Register string = r4;
|
| - Register element = r5;
|
| - Register elements_end = r6;
|
| - Register scratch = r9;
|
| -
|
| - // Separator operand is on the stack.
|
| - __ pop(separator);
|
| -
|
| - // Check that the array is a JSArray.
|
| - __ JumpIfSmi(array, &bailout);
|
| - __ CompareObjectType(array, scratch, array_length, JS_ARRAY_TYPE);
|
| - __ b(ne, &bailout);
|
| -
|
| - // Check that the array has fast elements.
|
| - __ CheckFastElements(scratch, array_length, &bailout);
|
| -
|
| - // If the array has length zero, return the empty string.
|
| - __ ldr(array_length, FieldMemOperand(array, JSArray::kLengthOffset));
|
| - __ SmiUntag(array_length, SetCC);
|
| - __ b(ne, &non_trivial_array);
|
| - __ LoadRoot(r0, Heap::kempty_stringRootIndex);
|
| - __ b(&done);
|
| -
|
| - __ bind(&non_trivial_array);
|
| -
|
| - // Get the FixedArray containing array's elements.
|
| - elements = array;
|
| - __ ldr(elements, FieldMemOperand(array, JSArray::kElementsOffset));
|
| - array = no_reg; // End of array's live range.
|
| -
|
| - // Check that all array elements are sequential one-byte strings, and
|
| - // accumulate the sum of their lengths, as a smi-encoded value.
|
| - __ mov(string_length, Operand::Zero());
|
| - __ add(element,
|
| - elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
|
| - __ add(elements_end, element, Operand(array_length, LSL, kPointerSizeLog2));
|
| - // Loop condition: while (element < elements_end).
|
| - // Live values in registers:
|
| - // elements: Fixed array of strings.
|
| - // array_length: Length of the fixed array of strings (not smi)
|
| - // separator: Separator string
|
| - // string_length: Accumulated sum of string lengths (smi).
|
| - // element: Current array element.
|
| - // elements_end: Array end.
|
| - if (generate_debug_code_) {
|
| - __ cmp(array_length, Operand::Zero());
|
| - __ Assert(gt, kNoEmptyArraysHereInEmitFastOneByteArrayJoin);
|
| - }
|
| - __ bind(&loop);
|
| - __ ldr(string, MemOperand(element, kPointerSize, PostIndex));
|
| - __ JumpIfSmi(string, &bailout);
|
| - __ ldr(scratch, FieldMemOperand(string, HeapObject::kMapOffset));
|
| - __ ldrb(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset));
|
| - __ JumpIfInstanceTypeIsNotSequentialOneByte(scratch, scratch, &bailout);
|
| - __ ldr(scratch, FieldMemOperand(string, SeqOneByteString::kLengthOffset));
|
| - __ add(string_length, string_length, Operand(scratch), SetCC);
|
| - __ b(vs, &bailout);
|
| - __ cmp(element, elements_end);
|
| - __ b(lt, &loop);
|
| -
|
| - // If array_length is 1, return elements[0], a string.
|
| - __ cmp(array_length, Operand(1));
|
| - __ b(ne, ¬_size_one_array);
|
| - __ ldr(r0, FieldMemOperand(elements, FixedArray::kHeaderSize));
|
| - __ b(&done);
|
| -
|
| - __ bind(¬_size_one_array);
|
| -
|
| - // Live values in registers:
|
| - // separator: Separator string
|
| - // array_length: Length of the array.
|
| - // string_length: Sum of string lengths (smi).
|
| - // elements: FixedArray of strings.
|
| -
|
| - // Check that the separator is a flat one-byte string.
|
| - __ JumpIfSmi(separator, &bailout);
|
| - __ ldr(scratch, FieldMemOperand(separator, HeapObject::kMapOffset));
|
| - __ ldrb(scratch, FieldMemOperand(scratch, Map::kInstanceTypeOffset));
|
| - __ JumpIfInstanceTypeIsNotSequentialOneByte(scratch, scratch, &bailout);
|
| -
|
| - // Add (separator length times array_length) - separator length to the
|
| - // string_length to get the length of the result string. array_length is not
|
| - // smi but the other values are, so the result is a smi
|
| - __ ldr(scratch, FieldMemOperand(separator, SeqOneByteString::kLengthOffset));
|
| - __ sub(string_length, string_length, Operand(scratch));
|
| - __ smull(scratch, ip, array_length, scratch);
|
| - // Check for smi overflow. No overflow if higher 33 bits of 64-bit result are
|
| - // zero.
|
| - __ cmp(ip, Operand::Zero());
|
| - __ b(ne, &bailout);
|
| - __ tst(scratch, Operand(0x80000000));
|
| - __ b(ne, &bailout);
|
| - __ add(string_length, string_length, Operand(scratch), SetCC);
|
| - __ b(vs, &bailout);
|
| - __ SmiUntag(string_length);
|
| -
|
| - // Get first element in the array to free up the elements register to be used
|
| - // for the result.
|
| - __ add(element,
|
| - elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
|
| - result = elements; // End of live range for elements.
|
| - elements = no_reg;
|
| - // Live values in registers:
|
| - // element: First array element
|
| - // separator: Separator string
|
| - // string_length: Length of result string (not smi)
|
| - // array_length: Length of the array.
|
| - __ AllocateOneByteString(result, string_length, scratch,
|
| - string, // used as scratch
|
| - elements_end, // used as scratch
|
| - &bailout);
|
| - // Prepare for looping. Set up elements_end to end of the array. Set
|
| - // result_pos to the position of the result where to write the first
|
| - // character.
|
| - __ add(elements_end, element, Operand(array_length, LSL, kPointerSizeLog2));
|
| - result_pos = array_length; // End of live range for array_length.
|
| - array_length = no_reg;
|
| - __ add(result_pos,
|
| - result,
|
| - Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag));
|
| -
|
| - // Check the length of the separator.
|
| - __ ldr(scratch, FieldMemOperand(separator, SeqOneByteString::kLengthOffset));
|
| - __ cmp(scratch, Operand(Smi::FromInt(1)));
|
| - __ b(eq, &one_char_separator);
|
| - __ b(gt, &long_separator);
|
| -
|
| - // Empty separator case
|
| - __ bind(&empty_separator_loop);
|
| - // Live values in registers:
|
| - // result_pos: the position to which we are currently copying characters.
|
| - // element: Current array element.
|
| - // elements_end: Array end.
|
| -
|
| - // Copy next array element to the result.
|
| - __ ldr(string, MemOperand(element, kPointerSize, PostIndex));
|
| - __ ldr(string_length, FieldMemOperand(string, String::kLengthOffset));
|
| - __ SmiUntag(string_length);
|
| - __ add(string,
|
| - string,
|
| - Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag));
|
| - __ CopyBytes(string, result_pos, string_length, scratch);
|
| - __ cmp(element, elements_end);
|
| - __ b(lt, &empty_separator_loop); // End while (element < elements_end).
|
| - DCHECK(result.is(r0));
|
| - __ b(&done);
|
| -
|
| - // One-character separator case
|
| - __ bind(&one_char_separator);
|
| - // Replace separator with its one-byte character value.
|
| - __ ldrb(separator, FieldMemOperand(separator, SeqOneByteString::kHeaderSize));
|
| - // Jump into the loop after the code that copies the separator, so the first
|
| - // element is not preceded by a separator
|
| - __ jmp(&one_char_separator_loop_entry);
|
| -
|
| - __ bind(&one_char_separator_loop);
|
| - // Live values in registers:
|
| - // result_pos: the position to which we are currently copying characters.
|
| - // element: Current array element.
|
| - // elements_end: Array end.
|
| - // separator: Single separator one-byte char (in lower byte).
|
| -
|
| - // Copy the separator character to the result.
|
| - __ strb(separator, MemOperand(result_pos, 1, PostIndex));
|
| -
|
| - // Copy next array element to the result.
|
| - __ bind(&one_char_separator_loop_entry);
|
| - __ ldr(string, MemOperand(element, kPointerSize, PostIndex));
|
| - __ ldr(string_length, FieldMemOperand(string, String::kLengthOffset));
|
| - __ SmiUntag(string_length);
|
| - __ add(string,
|
| - string,
|
| - Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag));
|
| - __ CopyBytes(string, result_pos, string_length, scratch);
|
| - __ cmp(element, elements_end);
|
| - __ b(lt, &one_char_separator_loop); // End while (element < elements_end).
|
| - DCHECK(result.is(r0));
|
| - __ b(&done);
|
| -
|
| - // Long separator case (separator is more than one character). Entry is at the
|
| - // label long_separator below.
|
| - __ bind(&long_separator_loop);
|
| - // Live values in registers:
|
| - // result_pos: the position to which we are currently copying characters.
|
| - // element: Current array element.
|
| - // elements_end: Array end.
|
| - // separator: Separator string.
|
| -
|
| - // Copy the separator to the result.
|
| - __ ldr(string_length, FieldMemOperand(separator, String::kLengthOffset));
|
| - __ SmiUntag(string_length);
|
| - __ add(string,
|
| - separator,
|
| - Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag));
|
| - __ CopyBytes(string, result_pos, string_length, scratch);
|
| -
|
| - __ bind(&long_separator);
|
| - __ ldr(string, MemOperand(element, kPointerSize, PostIndex));
|
| - __ ldr(string_length, FieldMemOperand(string, String::kLengthOffset));
|
| - __ SmiUntag(string_length);
|
| - __ add(string,
|
| - string,
|
| - Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag));
|
| - __ CopyBytes(string, result_pos, string_length, scratch);
|
| - __ cmp(element, elements_end);
|
| - __ b(lt, &long_separator_loop); // End while (element < elements_end).
|
| - DCHECK(result.is(r0));
|
| - __ b(&done);
|
| -
|
| - __ bind(&bailout);
|
| - __ LoadRoot(r0, Heap::kUndefinedValueRootIndex);
|
| - __ bind(&done);
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitDebugIsActive(CallRuntime* expr) {
|
| - DCHECK(expr->arguments()->length() == 0);
|
| - ExternalReference debug_is_active =
|
| - ExternalReference::debug_is_active_address(isolate());
|
| - __ mov(ip, Operand(debug_is_active));
|
| - __ ldrb(r0, MemOperand(ip));
|
| - __ SmiTag(r0);
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitLoadJSRuntimeFunction(CallRuntime* expr) {
|
| - // Push the builtins object as the receiver.
|
| - Register receiver = LoadDescriptor::ReceiverRegister();
|
| - __ ldr(receiver, GlobalObjectOperand());
|
| - __ ldr(receiver, FieldMemOperand(receiver, GlobalObject::kBuiltinsOffset));
|
| - __ push(receiver);
|
| -
|
| - // Load the function from the receiver.
|
| - __ mov(LoadDescriptor::NameRegister(), Operand(expr->name()));
|
| - __ mov(LoadDescriptor::SlotRegister(),
|
| - Operand(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);
|
| - __ ldr(r1, MemOperand(sp, (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.
|
| - __ ldr(ip, MemOperand(sp, 0));
|
| - __ push(ip);
|
| - __ str(r0, MemOperand(sp, kPointerSize));
|
| -
|
| - // 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.
|
| - __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
|
| -
|
| - context()->DropAndPlug(1, r0);
|
| -
|
| - } 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(r0);
|
| - }
|
| - }
|
| - }
|
| -}
|
| -
|
| -
|
| -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());
|
| - __ mov(r1, Operand(Smi::FromInt(language_mode())));
|
| - __ push(r1);
|
| - __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION);
|
| - context()->Plug(r0);
|
| - } 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()) {
|
| - __ ldr(r2, GlobalObjectOperand());
|
| - __ mov(r1, Operand(var->name()));
|
| - __ mov(r0, Operand(Smi::FromInt(SLOPPY)));
|
| - __ Push(r2, r1, r0);
|
| - __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION);
|
| - context()->Plug(r0);
|
| - } else if (var->IsStackAllocated() || var->IsContextSlot()) {
|
| - // Result of deleting non-global, non-dynamic variables is false.
|
| - // 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.
|
| - DCHECK(!context_register().is(r2));
|
| - __ mov(r2, Operand(var->name()));
|
| - __ Push(context_register(), r2);
|
| - __ CallRuntime(Runtime::kDeleteLookupSlot, 2);
|
| - context()->Plug(r0);
|
| - }
|
| - } 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(Heap::kUndefinedValueRootIndex);
|
| - 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);
|
| - __ LoadRoot(r0, Heap::kTrueValueRootIndex);
|
| - if (context()->IsStackValue()) __ push(r0);
|
| - __ jmp(&done);
|
| - __ bind(&materialize_false);
|
| - PrepareForBailoutForId(expr->MaterializeFalseId(), NO_REGISTERS);
|
| - __ LoadRoot(r0, Heap::kFalseValueRootIndex);
|
| - if (context()->IsStackValue()) __ push(r0);
|
| - __ bind(&done);
|
| - }
|
| - break;
|
| - }
|
| -
|
| - case Token::TYPEOF: {
|
| - Comment cmnt(masm_, "[ UnaryOperation (TYPEOF)");
|
| - {
|
| - AccumulatorValueContext context(this);
|
| - VisitForTypeofValue(expr->expression());
|
| - }
|
| - __ mov(r3, r0);
|
| - TypeofStub typeof_stub(isolate());
|
| - __ CallStub(&typeof_stub);
|
| - context()->Plug(r0);
|
| - 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()) {
|
| - __ mov(ip, Operand(Smi::FromInt(0)));
|
| - __ push(ip);
|
| - }
|
| - switch (assign_type) {
|
| - case NAMED_PROPERTY: {
|
| - // Put the object both on the stack and in the register.
|
| - VisitForStackValue(prop->obj());
|
| - __ ldr(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0));
|
| - EmitNamedPropertyLoad(prop);
|
| - break;
|
| - }
|
| -
|
| - case NAMED_SUPER_PROPERTY: {
|
| - VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
|
| - VisitForAccumulatorValue(
|
| - prop->obj()->AsSuperPropertyReference()->home_object());
|
| - __ Push(result_register());
|
| - const Register scratch = r1;
|
| - __ ldr(scratch, MemOperand(sp, kPointerSize));
|
| - __ Push(scratch);
|
| - __ 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());
|
| - const Register scratch = r1;
|
| - __ ldr(scratch, MemOperand(sp, 2 * kPointerSize));
|
| - __ Push(scratch);
|
| - __ ldr(scratch, MemOperand(sp, 2 * kPointerSize));
|
| - __ Push(scratch);
|
| - __ Push(result_register());
|
| - EmitKeyedSuperPropertyLoad(prop);
|
| - break;
|
| - }
|
| -
|
| - case KEYED_PROPERTY: {
|
| - VisitForStackValue(prop->obj());
|
| - VisitForStackValue(prop->key());
|
| - __ ldr(LoadDescriptor::ReceiverRegister(),
|
| - MemOperand(sp, 1 * kPointerSize));
|
| - __ ldr(LoadDescriptor::NameRegister(), MemOperand(sp, 0));
|
| - 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 stub_call, done;
|
| - JumpPatchSite patch_site(masm_);
|
| -
|
| - int count_value = expr->op() == Token::INC ? 1 : -1;
|
| - if (ShouldInlineSmiCase(expr->op())) {
|
| - Label slow;
|
| - patch_site.EmitJumpIfNotSmi(r0, &slow);
|
| -
|
| - // 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(r0);
|
| - break;
|
| - case NAMED_PROPERTY:
|
| - __ str(r0, MemOperand(sp, kPointerSize));
|
| - break;
|
| - case NAMED_SUPER_PROPERTY:
|
| - __ str(r0, MemOperand(sp, 2 * kPointerSize));
|
| - break;
|
| - case KEYED_PROPERTY:
|
| - __ str(r0, MemOperand(sp, 2 * kPointerSize));
|
| - break;
|
| - case KEYED_SUPER_PROPERTY:
|
| - __ str(r0, MemOperand(sp, 3 * kPointerSize));
|
| - break;
|
| - }
|
| - }
|
| - }
|
| -
|
| - __ add(r0, r0, Operand(Smi::FromInt(count_value)), SetCC);
|
| - __ b(vc, &done);
|
| - // Call stub. Undo operation first.
|
| - __ sub(r0, r0, Operand(Smi::FromInt(count_value)));
|
| - __ jmp(&stub_call);
|
| - __ 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(r0);
|
| - break;
|
| - case NAMED_PROPERTY:
|
| - __ str(r0, MemOperand(sp, kPointerSize));
|
| - break;
|
| - case NAMED_SUPER_PROPERTY:
|
| - __ str(r0, MemOperand(sp, 2 * kPointerSize));
|
| - break;
|
| - case KEYED_PROPERTY:
|
| - __ str(r0, MemOperand(sp, 2 * kPointerSize));
|
| - break;
|
| - case KEYED_SUPER_PROPERTY:
|
| - __ str(r0, MemOperand(sp, 3 * kPointerSize));
|
| - break;
|
| - }
|
| - }
|
| - }
|
| -
|
| -
|
| - __ bind(&stub_call);
|
| - __ mov(r1, r0);
|
| - __ mov(r0, Operand(Smi::FromInt(count_value)));
|
| -
|
| - SetExpressionPosition(expr);
|
| -
|
| - Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), Token::ADD,
|
| - 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 r0.
|
| - switch (assign_type) {
|
| - case VARIABLE:
|
| - if (expr->is_postfix()) {
|
| - { EffectContext context(this);
|
| - EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(),
|
| - Token::ASSIGN, expr->CountSlot());
|
| - PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
|
| - context.Plug(r0);
|
| - }
|
| - // For all contexts except EffectConstant We have the result on
|
| - // top of the stack.
|
| - if (!context()->IsEffect()) {
|
| - context()->PlugTOS();
|
| - }
|
| - } else {
|
| - EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(),
|
| - Token::ASSIGN, expr->CountSlot());
|
| - PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
|
| - context()->Plug(r0);
|
| - }
|
| - break;
|
| - case NAMED_PROPERTY: {
|
| - __ mov(StoreDescriptor::NameRegister(),
|
| - Operand(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(r0);
|
| - }
|
| - break;
|
| - }
|
| - case NAMED_SUPER_PROPERTY: {
|
| - EmitNamedSuperPropertyStore(prop);
|
| - if (expr->is_postfix()) {
|
| - if (!context()->IsEffect()) {
|
| - context()->PlugTOS();
|
| - }
|
| - } else {
|
| - context()->Plug(r0);
|
| - }
|
| - break;
|
| - }
|
| - case KEYED_SUPER_PROPERTY: {
|
| - EmitKeyedSuperPropertyStore(prop);
|
| - if (expr->is_postfix()) {
|
| - if (!context()->IsEffect()) {
|
| - context()->PlugTOS();
|
| - }
|
| - } else {
|
| - context()->Plug(r0);
|
| - }
|
| - break;
|
| - }
|
| - case KEYED_PROPERTY: {
|
| - __ Pop(StoreDescriptor::ReceiverRegister(),
|
| - StoreDescriptor::NameRegister());
|
| - 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()) {
|
| - if (!context()->IsEffect()) {
|
| - context()->PlugTOS();
|
| - }
|
| - } else {
|
| - context()->Plug(r0);
|
| - }
|
| - 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(r0, if_true);
|
| - __ ldr(r0, FieldMemOperand(r0, HeapObject::kMapOffset));
|
| - __ LoadRoot(ip, Heap::kHeapNumberMapRootIndex);
|
| - __ cmp(r0, ip);
|
| - Split(eq, if_true, if_false, fall_through);
|
| - } else if (String::Equals(check, factory->string_string())) {
|
| - __ JumpIfSmi(r0, if_false);
|
| - // Check for undetectable objects => false.
|
| - __ CompareObjectType(r0, r0, r1, FIRST_NONSTRING_TYPE);
|
| - __ b(ge, if_false);
|
| - __ ldrb(r1, FieldMemOperand(r0, Map::kBitFieldOffset));
|
| - __ tst(r1, Operand(1 << Map::kIsUndetectable));
|
| - Split(eq, if_true, if_false, fall_through);
|
| - } else if (String::Equals(check, factory->symbol_string())) {
|
| - __ JumpIfSmi(r0, if_false);
|
| - __ CompareObjectType(r0, r0, r1, SYMBOL_TYPE);
|
| - Split(eq, if_true, if_false, fall_through);
|
| - } else if (String::Equals(check, factory->float32x4_string())) {
|
| - __ JumpIfSmi(r0, if_false);
|
| - __ CompareObjectType(r0, r0, r1, FLOAT32X4_TYPE);
|
| - Split(eq, if_true, if_false, fall_through);
|
| - } else if (String::Equals(check, factory->boolean_string())) {
|
| - __ CompareRoot(r0, Heap::kTrueValueRootIndex);
|
| - __ b(eq, if_true);
|
| - __ CompareRoot(r0, Heap::kFalseValueRootIndex);
|
| - Split(eq, if_true, if_false, fall_through);
|
| - } else if (String::Equals(check, factory->undefined_string())) {
|
| - __ CompareRoot(r0, Heap::kUndefinedValueRootIndex);
|
| - __ b(eq, if_true);
|
| - __ JumpIfSmi(r0, if_false);
|
| - // Check for undetectable objects => true.
|
| - __ ldr(r0, FieldMemOperand(r0, HeapObject::kMapOffset));
|
| - __ ldrb(r1, FieldMemOperand(r0, Map::kBitFieldOffset));
|
| - __ tst(r1, Operand(1 << Map::kIsUndetectable));
|
| - Split(ne, if_true, if_false, fall_through);
|
| -
|
| - } else if (String::Equals(check, factory->function_string())) {
|
| - __ JumpIfSmi(r0, if_false);
|
| - STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2);
|
| - __ CompareObjectType(r0, r0, r1, JS_FUNCTION_TYPE);
|
| - __ b(eq, if_true);
|
| - __ cmp(r1, Operand(JS_FUNCTION_PROXY_TYPE));
|
| - Split(eq, if_true, if_false, fall_through);
|
| - } else if (String::Equals(check, factory->object_string())) {
|
| - __ JumpIfSmi(r0, if_false);
|
| - __ CompareRoot(r0, Heap::kNullValueRootIndex);
|
| - __ b(eq, if_true);
|
| - // Check for JS objects => true.
|
| - __ CompareObjectType(r0, r0, r1, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE);
|
| - __ b(lt, if_false);
|
| - __ CompareInstanceType(r0, r1, LAST_NONCALLABLE_SPEC_OBJECT_TYPE);
|
| - __ b(gt, if_false);
|
| - // Check for undetectable objects => false.
|
| - __ ldrb(r1, FieldMemOperand(r0, Map::kBitFieldOffset));
|
| - __ tst(r1, Operand(1 << Map::kIsUndetectable));
|
| - Split(eq, 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);
|
| - __ LoadRoot(ip, Heap::kTrueValueRootIndex);
|
| - __ cmp(r0, ip);
|
| - Split(eq, 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);
|
| - // The stub returns 0 for true.
|
| - __ tst(r0, r0);
|
| - Split(eq, if_true, if_false, fall_through);
|
| - break;
|
| - }
|
| -
|
| - default: {
|
| - VisitForAccumulatorValue(expr->right());
|
| - Condition cond = CompareIC::ComputeCondition(op);
|
| - __ pop(r1);
|
| -
|
| - bool inline_smi_code = ShouldInlineSmiCase(op);
|
| - JumpPatchSite patch_site(masm_);
|
| - if (inline_smi_code) {
|
| - Label slow_case;
|
| - __ orr(r2, r0, Operand(r1));
|
| - patch_site.EmitJumpIfNotSmi(r2, &slow_case);
|
| - __ cmp(r1, r0);
|
| - Split(cond, 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);
|
| - __ cmp(r0, Operand::Zero());
|
| - Split(cond, 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);
|
| - if (expr->op() == Token::EQ_STRICT) {
|
| - Heap::RootListIndex nil_value = nil == kNullValue ?
|
| - Heap::kNullValueRootIndex :
|
| - Heap::kUndefinedValueRootIndex;
|
| - __ LoadRoot(r1, nil_value);
|
| - __ cmp(r0, r1);
|
| - Split(eq, if_true, if_false, fall_through);
|
| - } else {
|
| - Handle<Code> ic = CompareNilICStub::GetUninitialized(isolate(), nil);
|
| - CallIC(ic, expr->CompareOperationFeedbackId());
|
| - __ cmp(r0, Operand(0));
|
| - Split(ne, if_true, if_false, fall_through);
|
| - }
|
| - context()->Plug(if_true, if_false);
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::VisitThisFunction(ThisFunction* expr) {
|
| - __ ldr(r0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
|
| - context()->Plug(r0);
|
| -}
|
| -
|
| -
|
| -Register FullCodeGenerator::result_register() {
|
| - return r0;
|
| -}
|
| -
|
| -
|
| -Register FullCodeGenerator::context_register() {
|
| - return cp;
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::StoreToFrameField(int frame_offset, Register value) {
|
| - DCHECK_EQ(POINTER_SIZE_ALIGN(frame_offset), frame_offset);
|
| - __ str(value, MemOperand(fp, frame_offset));
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::LoadContextField(Register dst, int context_index) {
|
| - __ ldr(dst, ContextOperand(cp, 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.
|
| - __ mov(ip, Operand(Smi::FromInt(0)));
|
| - } else if (declaration_scope->is_eval_scope()) {
|
| - // Contexts created by a call to eval have the same closure as the
|
| - // context calling eval, not the anonymous closure containing the eval
|
| - // code. Fetch it from the context.
|
| - __ ldr(ip, ContextOperand(cp, Context::CLOSURE_INDEX));
|
| - } else {
|
| - DCHECK(declaration_scope->is_function_scope());
|
| - __ ldr(ip, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
|
| - }
|
| - __ push(ip);
|
| -}
|
| -
|
| -
|
| -// ----------------------------------------------------------------------------
|
| -// Non-local control flow support.
|
| -
|
| -void FullCodeGenerator::EnterFinallyBlock() {
|
| - DCHECK(!result_register().is(r1));
|
| - // Store result register while executing finally block.
|
| - __ push(result_register());
|
| - // Cook return address in link register to stack (smi encoded Code* delta)
|
| - __ sub(r1, lr, Operand(masm_->CodeObject()));
|
| - __ SmiTag(r1);
|
| -
|
| - // Store result register while executing finally block.
|
| - __ push(r1);
|
| -
|
| - // Store pending message while executing finally block.
|
| - ExternalReference pending_message_obj =
|
| - ExternalReference::address_of_pending_message_obj(isolate());
|
| - __ mov(ip, Operand(pending_message_obj));
|
| - __ ldr(r1, MemOperand(ip));
|
| - __ push(r1);
|
| -
|
| - ClearPendingMessage();
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::ExitFinallyBlock() {
|
| - DCHECK(!result_register().is(r1));
|
| - // Restore pending message from stack.
|
| - __ pop(r1);
|
| - ExternalReference pending_message_obj =
|
| - ExternalReference::address_of_pending_message_obj(isolate());
|
| - __ mov(ip, Operand(pending_message_obj));
|
| - __ str(r1, MemOperand(ip));
|
| -
|
| - // Restore result register from stack.
|
| - __ pop(r1);
|
| -
|
| - // Uncook return address and return.
|
| - __ pop(result_register());
|
| - __ SmiUntag(r1);
|
| - __ add(pc, r1, Operand(masm_->CodeObject()));
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::ClearPendingMessage() {
|
| - DCHECK(!result_register().is(r1));
|
| - ExternalReference pending_message_obj =
|
| - ExternalReference::address_of_pending_message_obj(isolate());
|
| - __ LoadRoot(r1, Heap::kTheHoleValueRootIndex);
|
| - __ mov(ip, Operand(pending_message_obj));
|
| - __ str(r1, MemOperand(ip));
|
| -}
|
| -
|
| -
|
| -void FullCodeGenerator::EmitLoadStoreICSlot(FeedbackVectorICSlot slot) {
|
| - DCHECK(FLAG_vector_stores && !slot.IsInvalid());
|
| - __ mov(VectorStoreICTrampolineDescriptor::SlotRegister(),
|
| - Operand(SmiFromSlot(slot)));
|
| -}
|
| -
|
| -
|
| -#undef __
|
| -
|
| -
|
| -static Address GetInterruptImmediateLoadAddress(Address pc) {
|
| - Address load_address = pc - 2 * Assembler::kInstrSize;
|
| - if (!FLAG_enable_embedded_constant_pool) {
|
| - DCHECK(Assembler::IsLdrPcImmediateOffset(Memory::int32_at(load_address)));
|
| - } else if (Assembler::IsLdrPpRegOffset(Memory::int32_at(load_address))) {
|
| - // This is an extended constant pool lookup.
|
| - if (CpuFeatures::IsSupported(ARMv7)) {
|
| - load_address -= 2 * Assembler::kInstrSize;
|
| - DCHECK(Assembler::IsMovW(Memory::int32_at(load_address)));
|
| - DCHECK(Assembler::IsMovT(
|
| - Memory::int32_at(load_address + Assembler::kInstrSize)));
|
| - } else {
|
| - load_address -= 4 * Assembler::kInstrSize;
|
| - DCHECK(Assembler::IsMovImmed(Memory::int32_at(load_address)));
|
| - DCHECK(Assembler::IsOrrImmed(
|
| - Memory::int32_at(load_address + Assembler::kInstrSize)));
|
| - DCHECK(Assembler::IsOrrImmed(
|
| - Memory::int32_at(load_address + 2 * Assembler::kInstrSize)));
|
| - DCHECK(Assembler::IsOrrImmed(
|
| - Memory::int32_at(load_address + 3 * Assembler::kInstrSize)));
|
| - }
|
| - } else if (CpuFeatures::IsSupported(ARMv7) &&
|
| - Assembler::IsMovT(Memory::int32_at(load_address))) {
|
| - // This is a movw / movt immediate load.
|
| - load_address -= Assembler::kInstrSize;
|
| - DCHECK(Assembler::IsMovW(Memory::int32_at(load_address)));
|
| - } else if (!CpuFeatures::IsSupported(ARMv7) &&
|
| - Assembler::IsOrrImmed(Memory::int32_at(load_address))) {
|
| - // This is a mov / orr immediate load.
|
| - load_address -= 3 * Assembler::kInstrSize;
|
| - DCHECK(Assembler::IsMovImmed(Memory::int32_at(load_address)));
|
| - DCHECK(Assembler::IsOrrImmed(
|
| - Memory::int32_at(load_address + Assembler::kInstrSize)));
|
| - DCHECK(Assembler::IsOrrImmed(
|
| - Memory::int32_at(load_address + 2 * Assembler::kInstrSize)));
|
| - } else {
|
| - // This is a small constant pool lookup.
|
| - DCHECK(Assembler::IsLdrPpImmediateOffset(Memory::int32_at(load_address)));
|
| - }
|
| - return load_address;
|
| -}
|
| -
|
| -
|
| -void BackEdgeTable::PatchAt(Code* unoptimized_code,
|
| - Address pc,
|
| - BackEdgeState target_state,
|
| - Code* replacement_code) {
|
| - Address pc_immediate_load_address = GetInterruptImmediateLoadAddress(pc);
|
| - Address branch_address = pc_immediate_load_address - Assembler::kInstrSize;
|
| - CodePatcher patcher(branch_address, 1);
|
| - switch (target_state) {
|
| - case INTERRUPT:
|
| - {
|
| - // <decrement profiling counter>
|
| - // bpl ok
|
| - // ; load interrupt stub address into ip - either of (for ARMv7):
|
| - // ; <small cp load> | <extended cp load> | <immediate load>
|
| - // ldr ip, [pc/pp, #imm] | movw ip, #imm | movw ip, #imm
|
| - // | movt ip, #imm | movw ip, #imm
|
| - // | ldr ip, [pp, ip]
|
| - // ; or (for ARMv6):
|
| - // ; <small cp load> | <extended cp load> | <immediate load>
|
| - // ldr ip, [pc/pp, #imm] | mov ip, #imm | mov ip, #imm
|
| - // | orr ip, ip, #imm> | orr ip, ip, #imm
|
| - // | orr ip, ip, #imm> | orr ip, ip, #imm
|
| - // | orr ip, ip, #imm> | orr ip, ip, #imm
|
| - // blx ip
|
| - // <reset profiling counter>
|
| - // ok-label
|
| -
|
| - // Calculate branch offset to the ok-label - this is the difference
|
| - // between the branch address and |pc| (which points at <blx ip>) plus
|
| - // kProfileCounterResetSequence instructions
|
| - int branch_offset = pc - Instruction::kPCReadOffset - branch_address +
|
| - kProfileCounterResetSequenceLength;
|
| - patcher.masm()->b(branch_offset, pl);
|
| - break;
|
| - }
|
| - case ON_STACK_REPLACEMENT:
|
| - case OSR_AFTER_STACK_CHECK:
|
| - // <decrement profiling counter>
|
| - // mov r0, r0 (NOP)
|
| - // ; load on-stack replacement address into ip - either of (for ARMv7):
|
| - // ; <small cp load> | <extended cp load> | <immediate load>
|
| - // ldr ip, [pc/pp, #imm] | movw ip, #imm | movw ip, #imm
|
| - // | movt ip, #imm> | movw ip, #imm
|
| - // | ldr ip, [pp, ip]
|
| - // ; or (for ARMv6):
|
| - // ; <small cp load> | <extended cp load> | <immediate load>
|
| - // ldr ip, [pc/pp, #imm] | mov ip, #imm | mov ip, #imm
|
| - // | orr ip, ip, #imm> | orr ip, ip, #imm
|
| - // | orr ip, ip, #imm> | orr ip, ip, #imm
|
| - // | orr ip, ip, #imm> | orr ip, ip, #imm
|
| - // blx ip
|
| - // <reset profiling counter>
|
| - // ok-label
|
| - patcher.masm()->nop();
|
| - break;
|
| - }
|
| -
|
| - // Replace the call address.
|
| - Assembler::set_target_address_at(pc_immediate_load_address, unoptimized_code,
|
| - replacement_code->entry());
|
| -
|
| - unoptimized_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch(
|
| - unoptimized_code, pc_immediate_load_address, replacement_code);
|
| -}
|
| -
|
| -
|
| -BackEdgeTable::BackEdgeState BackEdgeTable::GetBackEdgeState(
|
| - Isolate* isolate,
|
| - Code* unoptimized_code,
|
| - Address pc) {
|
| - DCHECK(Assembler::IsBlxIp(Memory::int32_at(pc - Assembler::kInstrSize)));
|
| -
|
| - Address pc_immediate_load_address = GetInterruptImmediateLoadAddress(pc);
|
| - Address branch_address = pc_immediate_load_address - Assembler::kInstrSize;
|
| - Address interrupt_address = Assembler::target_address_at(
|
| - pc_immediate_load_address, unoptimized_code);
|
| -
|
| - if (Assembler::IsBranch(Assembler::instr_at(branch_address))) {
|
| - DCHECK(interrupt_address ==
|
| - isolate->builtins()->InterruptCheck()->entry());
|
| - return INTERRUPT;
|
| - }
|
| -
|
| - DCHECK(Assembler::IsNop(Assembler::instr_at(branch_address)));
|
| -
|
| - if (interrupt_address ==
|
| - isolate->builtins()->OnStackReplacement()->entry()) {
|
| - return ON_STACK_REPLACEMENT;
|
| - }
|
| -
|
| - DCHECK(interrupt_address ==
|
| - isolate->builtins()->OsrAfterStackCheck()->entry());
|
| - return OSR_AFTER_STACK_CHECK;
|
| -}
|
| -
|
| -
|
| -} // namespace internal
|
| -} // namespace v8
|
| -
|
| -#endif // V8_TARGET_ARCH_ARM
|
|
|
Chromium Code Reviews
Issue 1248443003:
Move Full-codegen into its own folder. (Closed)
Base URL: https://chromium.googlesource.com/v8/v8.git@master