| // 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. |
| |
| #if V8_TARGET_ARCH_MIPS |
| |
| // Note on Mips implementation: |
| // |
| // The result_register() for mips is the 'v0' register, which is defined |
| // by the ABI to contain function return values. However, the first |
| // parameter to a function is defined to be 'a0'. So there are many |
| // places where we have to move a previous result in v0 to a0 for the |
| // next call: mov(a0, v0). This is not needed on the other architectures. |
| |
| #include "src/ast/scopes.h" |
| #include "src/code-factory.h" |
| #include "src/code-stubs.h" |
| #include "src/codegen.h" |
| #include "src/debug/debug.h" |
| #include "src/full-codegen/full-codegen.h" |
| #include "src/ic/ic.h" |
| #include "src/parsing/parser.h" |
| |
| #include "src/mips/code-stubs-mips.h" |
| #include "src/mips/macro-assembler-mips.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 andi zero_reg, rx, #yyyy instruction, and rx * 0x0000ffff + yyyy |
| // (raw 16 bit immediate value is used) is the delta from the pc to the first |
| // instruction of the patchable code. |
| // The marker instruction is effectively a NOP (dest is zero_reg) and will |
| // never be emitted by normal 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::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
| __ bind(&patch_site_); |
| __ andi(at, reg, 0); |
| // Always taken before patched. |
| __ BranchShort(target, eq, at, Operand(zero_reg)); |
| } |
| |
| // When initially emitting this ensure that a jump is never generated to skip |
| // the inlined smi code. |
| void EmitJumpIfSmi(Register reg, Label* target) { |
| Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
| DCHECK(!patch_site_.is_bound() && !info_emitted_); |
| __ bind(&patch_site_); |
| __ andi(at, reg, 0); |
| // Never taken before patched. |
| __ BranchShort(target, ne, at, Operand(zero_reg)); |
| } |
| |
| void EmitPatchInfo() { |
| if (patch_site_.is_bound()) { |
| int delta_to_patch_site = masm_->InstructionsGeneratedSince(&patch_site_); |
| Register reg = Register::from_code(delta_to_patch_site / kImm16Mask); |
| __ andi(zero_reg, reg, delta_to_patch_site % kImm16Mask); |
| #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 a1: the JS function object being called (i.e. ourselves) |
| // o a3: the new target value |
| // o cp: our context |
| // o fp: our caller's frame pointer |
| // o sp: stack pointer |
| // o ra: return address |
| // |
| // The function builds a JS frame. Please see JavaScriptFrameConstants in |
| // frames-mips.h for its layout. |
| void FullCodeGenerator::Generate() { |
| CompilationInfo* info = info_; |
| profiling_counter_ = isolate()->factory()->NewCell( |
| Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate())); |
| SetFunctionPosition(literal()); |
| Comment cmnt(masm_, "[ function compiled by full code generator"); |
| |
| ProfileEntryHookStub::MaybeCallEntryHook(masm_); |
| |
| #ifdef DEBUG |
| if (strlen(FLAG_stop_at) > 0 && |
| info->literal()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { |
| __ stop("stop-at"); |
| } |
| #endif |
| |
| if (FLAG_debug_code && info->ExpectsJSReceiverAsReceiver()) { |
| int receiver_offset = info->scope()->num_parameters() * kPointerSize; |
| __ lw(a2, MemOperand(sp, receiver_offset)); |
| __ AssertNotSmi(a2); |
| __ GetObjectType(a2, a2, a2); |
| __ Check(ge, kSloppyFunctionExpectsJSReceiverReceiver, a2, |
| Operand(FIRST_JS_RECEIVER_TYPE)); |
| } |
| |
| // 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->GeneratePreagedPrologue()); |
| |
| { Comment cmnt(masm_, "[ Allocate locals"); |
| int locals_count = info->scope()->num_stack_slots(); |
| // Generators allocate locals, if any, in context slots. |
| DCHECK(!IsGeneratorFunction(info->literal()->kind()) || locals_count == 0); |
| if (locals_count > 0) { |
| if (locals_count >= 128) { |
| Label ok; |
| __ Subu(t5, sp, Operand(locals_count * kPointerSize)); |
| __ LoadRoot(a2, Heap::kRealStackLimitRootIndex); |
| __ Branch(&ok, hs, t5, Operand(a2)); |
| __ CallRuntime(Runtime::kThrowStackOverflow); |
| __ bind(&ok); |
| } |
| __ LoadRoot(t5, Heap::kUndefinedValueRootIndex); |
| int kMaxPushes = FLAG_optimize_for_size ? 4 : 32; |
| if (locals_count >= kMaxPushes) { |
| int loop_iterations = locals_count / kMaxPushes; |
| __ li(a2, Operand(loop_iterations)); |
| Label loop_header; |
| __ bind(&loop_header); |
| // Do pushes. |
| __ Subu(sp, sp, Operand(kMaxPushes * kPointerSize)); |
| for (int i = 0; i < kMaxPushes; i++) { |
| __ sw(t5, MemOperand(sp, i * kPointerSize)); |
| } |
| // Continue loop if not done. |
| __ Subu(a2, a2, Operand(1)); |
| __ Branch(&loop_header, ne, a2, Operand(zero_reg)); |
| } |
| int remaining = locals_count % kMaxPushes; |
| // Emit the remaining pushes. |
| __ Subu(sp, sp, Operand(remaining * kPointerSize)); |
| for (int i = 0; i < remaining; i++) { |
| __ sw(t5, MemOperand(sp, i * kPointerSize)); |
| } |
| } |
| } |
| |
| bool function_in_register_a1 = true; |
| |
| // Possibly allocate a local context. |
| if (info->scope()->num_heap_slots() > 0) { |
| Comment cmnt(masm_, "[ Allocate context"); |
| // Argument to NewContext is the function, which is still in a1. |
| bool need_write_barrier = true; |
| int slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
| if (info->scope()->is_script_scope()) { |
| __ push(a1); |
| __ Push(info->scope()->GetScopeInfo(info->isolate())); |
| __ CallRuntime(Runtime::kNewScriptContext); |
| PrepareForBailoutForId(BailoutId::ScriptContext(), TOS_REG); |
| // The new target value is not used, clobbering is safe. |
| DCHECK_NULL(info->scope()->new_target_var()); |
| } else { |
| if (info->scope()->new_target_var() != nullptr) { |
| __ push(a3); // Preserve new target. |
| } |
| if (slots <= FastNewContextStub::kMaximumSlots) { |
| FastNewContextStub stub(isolate(), slots); |
| __ CallStub(&stub); |
| // Result of FastNewContextStub is always in new space. |
| need_write_barrier = false; |
| } else { |
| __ push(a1); |
| __ CallRuntime(Runtime::kNewFunctionContext); |
| } |
| if (info->scope()->new_target_var() != nullptr) { |
| __ pop(a3); // Restore new target. |
| } |
| } |
| function_in_register_a1 = false; |
| // Context is returned in v0. It replaces the context passed to us. |
| // It's saved in the stack and kept live in cp. |
| __ mov(cp, v0); |
| __ sw(v0, 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. |
| __ lw(a0, MemOperand(fp, parameter_offset)); |
| // Store it in the context. |
| MemOperand target = ContextMemOperand(cp, var->index()); |
| __ sw(a0, target); |
| |
| // Update the write barrier. |
| if (need_write_barrier) { |
| __ RecordWriteContextSlot(cp, target.offset(), a0, a2, |
| kRAHasBeenSaved, kDontSaveFPRegs); |
| } else if (FLAG_debug_code) { |
| Label done; |
| __ JumpIfInNewSpace(cp, a0, &done); |
| __ Abort(kExpectedNewSpaceObject); |
| __ bind(&done); |
| } |
| } |
| } |
| } |
| |
| // Register holding this function and new target are both trashed in case we |
| // bailout here. But since that can happen only when new target is not used |
| // and we allocate a context, the value of |function_in_register| is correct. |
| PrepareForBailoutForId(BailoutId::FunctionContext(), NO_REGISTERS); |
| |
| // 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_a1) { |
| __ lw(a1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| // The write barrier clobbers register again, keep it marked as such. |
| } |
| SetVar(this_function_var, a1, a0, a2); |
| } |
| |
| // Possibly set up a local binding to the new target value. |
| Variable* new_target_var = scope()->new_target_var(); |
| if (new_target_var != nullptr) { |
| Comment cmnt(masm_, "[ new.target"); |
| SetVar(new_target_var, a3, a0, a2); |
| } |
| |
| // 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; |
| |
| __ li(RestParamAccessDescriptor::parameter_count(), |
| Operand(Smi::FromInt(num_parameters))); |
| __ Addu(RestParamAccessDescriptor::parameter_pointer(), fp, |
| Operand(StandardFrameConstants::kCallerSPOffset + offset)); |
| __ li(RestParamAccessDescriptor::rest_parameter_index(), |
| Operand(Smi::FromInt(rest_index))); |
| DCHECK(a1.is(RestParamAccessDescriptor::rest_parameter_index())); |
| function_in_register_a1 = false; |
| |
| RestParamAccessStub stub(isolate()); |
| __ CallStub(&stub); |
| |
| SetVar(rest_param, v0, a1, a2); |
| } |
| |
| Variable* arguments = scope()->arguments(); |
| if (arguments != NULL) { |
| // Function uses arguments object. |
| Comment cmnt(masm_, "[ Allocate arguments object"); |
| DCHECK(a1.is(ArgumentsAccessNewDescriptor::function())); |
| if (!function_in_register_a1) { |
| // Load this again, if it's used by the local context below. |
| __ lw(a1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| } |
| // Receiver is just before the parameters on the caller's stack. |
| int num_parameters = info->scope()->num_parameters(); |
| int offset = num_parameters * kPointerSize; |
| __ li(ArgumentsAccessNewDescriptor::parameter_count(), |
| Operand(Smi::FromInt(num_parameters))); |
| __ Addu(ArgumentsAccessNewDescriptor::parameter_pointer(), fp, |
| Operand(StandardFrameConstants::kCallerSPOffset + offset)); |
| |
| // Arguments to ArgumentsAccessStub: |
| // function, parameter pointer, parameter count. |
| // The stub will rewrite parameter pointer and parameter count if the |
| // previous stack frame was an arguments adapter frame. |
| bool is_unmapped = is_strict(language_mode()) || !has_simple_parameters(); |
| ArgumentsAccessStub::Type type = ArgumentsAccessStub::ComputeType( |
| is_unmapped, literal()->has_duplicate_parameters()); |
| ArgumentsAccessStub stub(isolate(), type); |
| __ CallStub(&stub); |
| |
| SetVar(arguments, v0, a1, a2); |
| } |
| |
| if (FLAG_trace) { |
| __ CallRuntime(Runtime::kTraceEnter); |
| } |
| |
| // Visit the declarations and body unless there is an illegal |
| // redeclaration. |
| if (scope()->HasIllegalRedeclaration()) { |
| Comment cmnt(masm_, "[ Declarations"); |
| VisitForEffect(scope()->GetIllegalRedeclaration()); |
| |
| } else { |
| PrepareForBailoutForId(BailoutId::FunctionEntry(), NO_REGISTERS); |
| { Comment cmnt(masm_, "[ Declarations"); |
| VisitDeclarations(scope()->declarations()); |
| } |
| |
| // Assert that the declarations do not use ICs. Otherwise the debugger |
| // won't be able to redirect a PC at an IC to the correct IC in newly |
| // recompiled code. |
| DCHECK_EQ(0, ic_total_count_); |
| |
| { Comment cmnt(masm_, "[ Stack check"); |
| PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS); |
| Label ok; |
| __ LoadRoot(at, Heap::kStackLimitRootIndex); |
| __ Branch(&ok, hs, sp, Operand(at)); |
| Handle<Code> stack_check = isolate()->builtins()->StackCheck(); |
| PredictableCodeSizeScope predictable(masm_, |
| masm_->CallSize(stack_check, RelocInfo::CODE_TARGET)); |
| __ Call(stack_check, RelocInfo::CODE_TARGET); |
| __ bind(&ok); |
| } |
| |
| { Comment cmnt(masm_, "[ Body"); |
| DCHECK(loop_depth() == 0); |
| VisitStatements(literal()->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(v0, Heap::kUndefinedValueRootIndex); |
| } |
| EmitReturnSequence(); |
| } |
| |
| |
| void FullCodeGenerator::ClearAccumulator() { |
| DCHECK(Smi::FromInt(0) == 0); |
| __ mov(v0, zero_reg); |
| } |
| |
| |
| void FullCodeGenerator::EmitProfilingCounterDecrement(int delta) { |
| __ li(a2, Operand(profiling_counter_)); |
| __ lw(a3, FieldMemOperand(a2, Cell::kValueOffset)); |
| __ Subu(a3, a3, Operand(Smi::FromInt(delta))); |
| __ sw(a3, FieldMemOperand(a2, Cell::kValueOffset)); |
| } |
| |
| |
| void FullCodeGenerator::EmitProfilingCounterReset() { |
| int reset_value = FLAG_interrupt_budget; |
| if (info_->is_debug()) { |
| // Detect debug break requests as soon as possible. |
| reset_value = FLAG_interrupt_budget >> 4; |
| } |
| __ li(a2, Operand(profiling_counter_)); |
| __ li(a3, Operand(Smi::FromInt(reset_value))); |
| __ sw(a3, FieldMemOperand(a2, Cell::kValueOffset)); |
| } |
| |
| |
| void FullCodeGenerator::EmitBackEdgeBookkeeping(IterationStatement* stmt, |
| Label* back_edge_target) { |
| // The generated code is used in Deoptimizer::PatchStackCheckCodeAt so we need |
| // to make sure it is constant. Branch may emit a skip-or-jump sequence |
| // instead of the normal Branch. It seems that the "skip" part of that |
| // sequence is about as long as this Branch would be so it is safe to ignore |
| // that. |
| Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
| Comment cmnt(masm_, "[ Back edge bookkeeping"); |
| Label ok; |
| DCHECK(back_edge_target->is_bound()); |
| int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target); |
| int weight = Min(kMaxBackEdgeWeight, |
| Max(1, distance / kCodeSizeMultiplier)); |
| EmitProfilingCounterDecrement(weight); |
| __ slt(at, a3, zero_reg); |
| __ beq(at, zero_reg, &ok); |
| // Call will emit a li t9 first, so it is safe to use the delay slot. |
| __ 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()) { |
| __ Branch(&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 v0. |
| __ push(v0); |
| __ CallRuntime(Runtime::kTraceExit); |
| } |
| // 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; |
| __ Branch(&ok, ge, a3, Operand(zero_reg)); |
| __ push(v0); |
| __ Call(isolate()->builtins()->InterruptCheck(), |
| RelocInfo::CODE_TARGET); |
| __ pop(v0); |
| EmitProfilingCounterReset(); |
| __ bind(&ok); |
| |
| // Make sure that the constant pool is not emitted inside of the return |
| // sequence. |
| { Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
| // Here we use masm_-> instead of the __ macro to avoid the code coverage |
| // tool from instrumenting as we rely on the code size here. |
| int32_t arg_count = info_->scope()->num_parameters() + 1; |
| int32_t sp_delta = arg_count * kPointerSize; |
| SetReturnPosition(literal()); |
| masm_->mov(sp, fp); |
| masm_->MultiPop(static_cast<RegList>(fp.bit() | ra.bit())); |
| masm_->Addu(sp, sp, Operand(sp_delta)); |
| masm_->Jump(ra); |
| } |
| } |
| } |
| |
| |
| 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_) __ Branch(false_label_); |
| } else if (index == Heap::kTrueValueRootIndex) { |
| if (true_label_ != fall_through_) __ Branch(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 { |
| __ li(result_register(), Operand(lit)); |
| } |
| |
| |
| void FullCodeGenerator::StackValueContext::Plug(Handle<Object> lit) const { |
| // Immediates cannot be pushed directly. |
| __ li(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_) __ Branch(false_label_); |
| } else if (lit->IsTrue() || lit->IsJSObject()) { |
| if (true_label_ != fall_through_) __ Branch(true_label_); |
| } else if (lit->IsString()) { |
| if (String::cast(*lit)->length() == 0) { |
| if (false_label_ != fall_through_) __ Branch(false_label_); |
| } else { |
| if (true_label_ != fall_through_) __ Branch(true_label_); |
| } |
| } else if (lit->IsSmi()) { |
| if (Smi::cast(*lit)->value() == 0) { |
| if (false_label_ != fall_through_) __ Branch(false_label_); |
| } else { |
| if (true_label_ != fall_through_) __ Branch(true_label_); |
| } |
| } else { |
| // For simplicity we always test the accumulator register. |
| __ li(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); |
| __ sw(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); |
| __ Branch(&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(at, Heap::kTrueValueRootIndex); |
| // Push the value as the following branch can clobber at in long branch mode. |
| __ push(at); |
| __ Branch(&done); |
| __ bind(materialize_false); |
| __ LoadRoot(at, Heap::kFalseValueRootIndex); |
| __ push(at); |
| __ bind(&done); |
| } |
| |
| |
| void FullCodeGenerator::TestContext::Plug(Label* materialize_true, |
| Label* materialize_false) const { |
| DCHECK(materialize_true == true_label_); |
| DCHECK(materialize_false == false_label_); |
| } |
| |
| |
| void FullCodeGenerator::AccumulatorValueContext::Plug(bool flag) const { |
| 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(at, value_root_index); |
| __ push(at); |
| } |
| |
| |
| void FullCodeGenerator::TestContext::Plug(bool flag) const { |
| codegen()->PrepareForBailoutBeforeSplit(condition(), |
| true, |
| true_label_, |
| false_label_); |
| if (flag) { |
| if (true_label_ != fall_through_) __ Branch(true_label_); |
| } else { |
| if (false_label_ != fall_through_) __ Branch(false_label_); |
| } |
| } |
| |
| |
| void FullCodeGenerator::DoTest(Expression* condition, |
| Label* if_true, |
| Label* if_false, |
| Label* fall_through) { |
| __ mov(a0, result_register()); |
| Handle<Code> ic = ToBooleanStub::GetUninitialized(isolate()); |
| CallIC(ic, condition->test_id()); |
| __ LoadRoot(at, Heap::kTrueValueRootIndex); |
| Split(eq, result_register(), Operand(at), if_true, if_false, fall_through); |
| } |
| |
| |
| void FullCodeGenerator::Split(Condition cc, |
| Register lhs, |
| const Operand& rhs, |
| Label* if_true, |
| Label* if_false, |
| Label* fall_through) { |
| if (if_false == fall_through) { |
| __ Branch(if_true, cc, lhs, rhs); |
| } else if (if_true == fall_through) { |
| __ Branch(if_false, NegateCondition(cc), lhs, rhs); |
| } else { |
| __ Branch(if_true, cc, lhs, rhs); |
| __ Branch(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 ContextMemOperand(scratch, var->index()); |
| } else { |
| return StackOperand(var); |
| } |
| } |
| |
| |
| void FullCodeGenerator::GetVar(Register dest, Variable* var) { |
| // Use destination as scratch. |
| MemOperand location = VarOperand(var, dest); |
| __ lw(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); |
| __ sw(src, location); |
| // Emit the write barrier code if the location is in the heap. |
| if (var->IsContextSlot()) { |
| __ RecordWriteContextSlot(scratch0, |
| location.offset(), |
| src, |
| scratch1, |
| kRAHasBeenSaved, |
| 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()) return; |
| |
| Label skip; |
| if (should_normalize) __ Branch(&skip); |
| PrepareForBailout(expr, TOS_REG); |
| if (should_normalize) { |
| __ LoadRoot(t0, Heap::kTrueValueRootIndex); |
| Split(eq, a0, Operand(t0), 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. |
| __ lw(a1, FieldMemOperand(cp, HeapObject::kMapOffset)); |
| __ LoadRoot(t0, Heap::kWithContextMapRootIndex); |
| __ Check(ne, kDeclarationInWithContext, |
| a1, Operand(t0)); |
| __ LoadRoot(t0, Heap::kCatchContextMapRootIndex); |
| __ Check(ne, kDeclarationInCatchContext, |
| a1, Operand(t0)); |
| } |
| } |
| |
| |
| 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(t0, Heap::kTheHoleValueRootIndex); |
| __ sw(t0, StackOperand(variable)); |
| } |
| break; |
| |
| case VariableLocation::CONTEXT: |
| if (hole_init) { |
| Comment cmnt(masm_, "[ VariableDeclaration"); |
| EmitDebugCheckDeclarationContext(variable); |
| __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| __ sw(at, ContextMemOperand(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"); |
| __ li(a2, Operand(variable->name())); |
| // Declaration nodes are always introduced in one of four modes. |
| DCHECK(IsDeclaredVariableMode(mode)); |
| // 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(a0, Heap::kTheHoleValueRootIndex); |
| } else { |
| DCHECK(Smi::FromInt(0) == 0); |
| __ mov(a0, zero_reg); // Smi::FromInt(0) indicates no initial value. |
| } |
| __ Push(a2, a0); |
| __ Push(Smi::FromInt(variable->DeclarationPropertyAttributes())); |
| __ CallRuntime(Runtime::kDeclareLookupSlot); |
| 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()); |
| __ sw(result_register(), StackOperand(variable)); |
| break; |
| } |
| |
| case VariableLocation::CONTEXT: { |
| Comment cmnt(masm_, "[ FunctionDeclaration"); |
| EmitDebugCheckDeclarationContext(variable); |
| VisitForAccumulatorValue(declaration->fun()); |
| __ sw(result_register(), ContextMemOperand(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(), |
| a2, |
| kRAHasBeenSaved, |
| kDontSaveFPRegs, |
| EMIT_REMEMBERED_SET, |
| OMIT_SMI_CHECK); |
| PrepareForBailoutForId(proxy->id(), NO_REGISTERS); |
| break; |
| } |
| |
| case VariableLocation::LOOKUP: { |
| Comment cmnt(masm_, "[ FunctionDeclaration"); |
| __ li(a2, Operand(variable->name())); |
| __ Push(a2); |
| // Push initial value for function declaration. |
| VisitForStackValue(declaration->fun()); |
| __ Push(Smi::FromInt(variable->DeclarationPropertyAttributes())); |
| __ CallRuntime(Runtime::kDeclareLookupSlot); |
| break; |
| } |
| } |
| } |
| |
| |
| void FullCodeGenerator::DeclareGlobals(Handle<FixedArray> pairs) { |
| // Call the runtime to declare the globals. |
| __ li(a1, Operand(pairs)); |
| __ li(a0, Operand(Smi::FromInt(DeclareGlobalsFlags()))); |
| __ Push(a1, a0); |
| __ CallRuntime(Runtime::kDeclareGlobals); |
| // Return value is ignored. |
| } |
| |
| |
| void FullCodeGenerator::DeclareModules(Handle<FixedArray> descriptions) { |
| // Call the runtime to declare the modules. |
| __ Push(descriptions); |
| __ CallRuntime(Runtime::kDeclareModules); |
| // 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()); |
| __ mov(a0, result_register()); // CompareStub requires args in a0, a1. |
| |
| // Perform the comparison as if via '==='. |
| __ lw(a1, MemOperand(sp, 0)); // Switch value. |
| bool inline_smi_code = ShouldInlineSmiCase(Token::EQ_STRICT); |
| JumpPatchSite patch_site(masm_); |
| if (inline_smi_code) { |
| Label slow_case; |
| __ or_(a2, a1, a0); |
| patch_site.EmitJumpIfNotSmi(a2, &slow_case); |
| |
| __ Branch(&next_test, ne, a1, Operand(a0)); |
| __ Drop(1); // Switch value is no longer needed. |
| __ Branch(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; |
| __ Branch(&skip); |
| PrepareForBailout(clause, TOS_REG); |
| __ LoadRoot(at, Heap::kTrueValueRootIndex); |
| __ Branch(&next_test, ne, v0, Operand(at)); |
| __ Drop(1); |
| __ Branch(clause->body_target()); |
| __ bind(&skip); |
| |
| __ Branch(&next_test, ne, v0, Operand(zero_reg)); |
| __ Drop(1); // Switch value is no longer needed. |
| __ Branch(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) { |
| __ Branch(nested_statement.break_label()); |
| } else { |
| __ Branch(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()); |
| __ mov(a0, result_register()); // Result as param to InvokeBuiltin below. |
| __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| __ Branch(&exit, eq, a0, Operand(at)); |
| Register null_value = t1; |
| __ LoadRoot(null_value, Heap::kNullValueRootIndex); |
| __ Branch(&exit, eq, a0, Operand(null_value)); |
| PrepareForBailoutForId(stmt->PrepareId(), TOS_REG); |
| __ mov(a0, v0); |
| // Convert the object to a JS object. |
| Label convert, done_convert; |
| __ JumpIfSmi(a0, &convert); |
| __ GetObjectType(a0, a1, a1); |
| __ Branch(&done_convert, ge, a1, Operand(FIRST_JS_RECEIVER_TYPE)); |
| __ bind(&convert); |
| ToObjectStub stub(isolate()); |
| __ CallStub(&stub); |
| __ mov(a0, v0); |
| __ bind(&done_convert); |
| PrepareForBailoutForId(stmt->ToObjectId(), TOS_REG); |
| __ push(a0); |
| |
| // Check for proxies. |
| Label call_runtime; |
| __ GetObjectType(a0, a1, a1); |
| __ Branch(&call_runtime, eq, a1, Operand(JS_PROXY_TYPE)); |
| |
| // 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; |
| __ lw(v0, FieldMemOperand(a0, HeapObject::kMapOffset)); |
| __ Branch(&use_cache); |
| |
| // Get the set of properties to enumerate. |
| __ bind(&call_runtime); |
| __ push(a0); // Duplicate the enumerable object on the stack. |
| __ CallRuntime(Runtime::kGetPropertyNamesFast); |
| 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; |
| __ lw(a2, FieldMemOperand(v0, HeapObject::kMapOffset)); |
| __ LoadRoot(at, Heap::kMetaMapRootIndex); |
| __ Branch(&fixed_array, ne, a2, Operand(at)); |
| |
| // We got a map in register v0. Get the enumeration cache from it. |
| Label no_descriptors; |
| __ bind(&use_cache); |
| |
| __ EnumLength(a1, v0); |
| __ Branch(&no_descriptors, eq, a1, Operand(Smi::FromInt(0))); |
| |
| __ LoadInstanceDescriptors(v0, a2); |
| __ lw(a2, FieldMemOperand(a2, DescriptorArray::kEnumCacheOffset)); |
| __ lw(a2, FieldMemOperand(a2, DescriptorArray::kEnumCacheBridgeCacheOffset)); |
| |
| // Set up the four remaining stack slots. |
| __ li(a0, Operand(Smi::FromInt(0))); |
| // Push map, enumeration cache, enumeration cache length (as smi) and zero. |
| __ Push(v0, a2, a1, a0); |
| __ jmp(&loop); |
| |
| __ bind(&no_descriptors); |
| __ Drop(1); |
| __ jmp(&exit); |
| |
| // We got a fixed array in register v0. Iterate through that. |
| __ bind(&fixed_array); |
| |
| __ EmitLoadTypeFeedbackVector(a1); |
| __ li(a2, Operand(TypeFeedbackVector::MegamorphicSentinel(isolate()))); |
| int vector_index = SmiFromSlot(slot)->value(); |
| __ sw(a2, FieldMemOperand(a1, FixedArray::OffsetOfElementAt(vector_index))); |
| |
| __ li(a1, Operand(Smi::FromInt(1))); // Smi(1) indicates slow check |
| __ Push(a1, v0); // Smi and array |
| __ lw(a1, FieldMemOperand(v0, FixedArray::kLengthOffset)); |
| __ li(a0, Operand(Smi::FromInt(0))); |
| __ Push(a1, a0); // Fixed array length (as smi) and initial index. |
| |
| // Generate code for doing the condition check. |
| __ bind(&loop); |
| SetExpressionAsStatementPosition(stmt->each()); |
| |
| // Load the current count to a0, load the length to a1. |
| __ lw(a0, MemOperand(sp, 0 * kPointerSize)); |
| __ lw(a1, MemOperand(sp, 1 * kPointerSize)); |
| __ Branch(loop_statement.break_label(), hs, a0, Operand(a1)); |
| |
| // Get the current entry of the array into register a3. |
| __ lw(a2, MemOperand(sp, 2 * kPointerSize)); |
| __ Addu(a2, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| __ sll(t0, a0, kPointerSizeLog2 - kSmiTagSize); |
| __ addu(t0, a2, t0); // Array base + scaled (smi) index. |
| __ lw(a3, MemOperand(t0)); // Current entry. |
| |
| // Get the expected map from the stack or a smi in the |
| // permanent slow case into register a2. |
| __ lw(a2, 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; |
| __ lw(a1, MemOperand(sp, 4 * kPointerSize)); |
| __ lw(t0, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| __ Branch(&update_each, eq, t0, Operand(a2)); |
| |
| // 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(a1, a3); // Enumerable and current entry. |
| __ CallRuntime(Runtime::kForInFilter); |
| PrepareForBailoutForId(stmt->FilterId(), TOS_REG); |
| __ mov(a3, result_register()); |
| __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| __ Branch(loop_statement.continue_label(), eq, a3, Operand(at)); |
| |
| // Update the 'each' property or variable from the possibly filtered |
| // entry in register a3. |
| __ bind(&update_each); |
| __ mov(result_register(), a3); |
| // Perform the assignment as if via '='. |
| { EffectContext context(this); |
| EmitAssignment(stmt->each(), stmt->EachFeedbackSlot()); |
| PrepareForBailoutForId(stmt->AssignmentId(), NO_REGISTERS); |
| } |
| |
| // Both Crankshaft and Turbofan expect BodyId to be right before stmt->body(). |
| PrepareForBailoutForId(stmt->BodyId(), 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(a0); |
| __ Addu(a0, a0, Operand(Smi::FromInt(1))); |
| __ push(a0); |
| |
| EmitBackEdgeBookkeeping(stmt, &loop); |
| __ Branch(&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()); |
| __ li(a2, Operand(info)); |
| __ CallStub(&stub); |
| } else { |
| __ Push(info); |
| __ CallRuntime(pretenure ? Runtime::kNewClosure_Tenured |
| : Runtime::kNewClosure); |
| } |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitSetHomeObject(Expression* initializer, int offset, |
| FeedbackVectorSlot slot) { |
| DCHECK(NeedsHomeObject(initializer)); |
| __ lw(StoreDescriptor::ReceiverRegister(), MemOperand(sp)); |
| __ li(StoreDescriptor::NameRegister(), |
| Operand(isolate()->factory()->home_object_symbol())); |
| __ lw(StoreDescriptor::ValueRegister(), |
| MemOperand(sp, offset * kPointerSize)); |
| EmitLoadStoreICSlot(slot); |
| CallStoreIC(); |
| } |
| |
| |
| void FullCodeGenerator::EmitSetHomeObjectAccumulator(Expression* initializer, |
| int offset, |
| FeedbackVectorSlot slot) { |
| DCHECK(NeedsHomeObject(initializer)); |
| __ Move(StoreDescriptor::ReceiverRegister(), v0); |
| __ li(StoreDescriptor::NameRegister(), |
| Operand(isolate()->factory()->home_object_symbol())); |
| __ lw(StoreDescriptor::ValueRegister(), |
| MemOperand(sp, offset * kPointerSize)); |
| EmitLoadStoreICSlot(slot); |
| CallStoreIC(); |
| } |
| |
| |
| void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy, |
| TypeofMode typeof_mode, |
| Label* slow) { |
| Register current = cp; |
| Register next = a1; |
| Register temp = a2; |
| |
| Scope* s = scope(); |
| while (s != NULL) { |
| if (s->num_heap_slots() > 0) { |
| if (s->calls_sloppy_eval()) { |
| // Check that extension is "the hole". |
| __ lw(temp, ContextMemOperand(current, Context::EXTENSION_INDEX)); |
| __ JumpIfNotRoot(temp, Heap::kTheHoleValueRootIndex, slow); |
| } |
| // Load next context in chain. |
| __ lw(next, ContextMemOperand(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. |
| __ lw(temp, FieldMemOperand(next, HeapObject::kMapOffset)); |
| __ LoadRoot(t0, Heap::kNativeContextMapRootIndex); |
| __ Branch(&fast, eq, temp, Operand(t0)); |
| // Check that extension is "the hole". |
| __ lw(temp, ContextMemOperand(next, Context::EXTENSION_INDEX)); |
| __ JumpIfNotRoot(temp, Heap::kTheHoleValueRootIndex, slow); |
| // Load next context in chain. |
| __ lw(next, ContextMemOperand(next, Context::PREVIOUS_INDEX)); |
| __ Branch(&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 = a3; |
| Register temp = t0; |
| |
| 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 "the hole". |
| __ lw(temp, ContextMemOperand(context, Context::EXTENSION_INDEX)); |
| __ JumpIfNotRoot(temp, Heap::kTheHoleValueRootIndex, slow); |
| } |
| __ lw(next, ContextMemOperand(context, Context::PREVIOUS_INDEX)); |
| // Walk the rest of the chain without clobbering cp. |
| context = next; |
| } |
| } |
| // Check that last extension is "the hole". |
| __ lw(temp, ContextMemOperand(context, Context::EXTENSION_INDEX)); |
| __ JumpIfNotRoot(temp, Heap::kTheHoleValueRootIndex, 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 ContextMemOperand(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); |
| __ Branch(done); |
| } else if (var->mode() == DYNAMIC_LOCAL) { |
| Variable* local = var->local_if_not_shadowed(); |
| __ lw(v0, ContextSlotOperandCheckExtensions(local, slow)); |
| if (local->mode() == LET || local->mode() == CONST || |
| local->mode() == CONST_LEGACY) { |
| __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| __ subu(at, v0, at); // Sub as compare: at == 0 on eq. |
| if (local->mode() == CONST_LEGACY) { |
| __ LoadRoot(a0, Heap::kUndefinedValueRootIndex); |
| __ Movz(v0, a0, at); // Conditional move: return Undefined if TheHole. |
| } else { // LET || CONST |
| __ Branch(done, ne, at, Operand(zero_reg)); |
| __ li(a0, Operand(var->name())); |
| __ push(a0); |
| __ CallRuntime(Runtime::kThrowReferenceError); |
| } |
| } |
| __ Branch(done); |
| } |
| } |
| |
| |
| void FullCodeGenerator::EmitGlobalVariableLoad(VariableProxy* proxy, |
| TypeofMode typeof_mode) { |
| Variable* var = proxy->var(); |
| DCHECK(var->IsUnallocatedOrGlobalSlot() || |
| (var->IsLookupSlot() && var->mode() == DYNAMIC_GLOBAL)); |
| __ LoadGlobalObject(LoadDescriptor::ReceiverRegister()); |
| __ li(LoadDescriptor::NameRegister(), Operand(var->name())); |
| __ li(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(v0); |
| 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 (NeedsHoleCheckForLoad(proxy)) { |
| // Let and const need a read barrier. |
| GetVar(v0, var); |
| __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| __ subu(at, v0, at); // Sub as compare: at == 0 on eq. |
| if (var->mode() == LET || var->mode() == CONST) { |
| // Throw a reference error when using an uninitialized let/const |
| // binding in harmony mode. |
| Label done; |
| __ Branch(&done, ne, at, Operand(zero_reg)); |
| __ li(a0, Operand(var->name())); |
| __ push(a0); |
| __ CallRuntime(Runtime::kThrowReferenceError); |
| __ bind(&done); |
| } else { |
| // Uninitialized legacy const bindings are unholed. |
| DCHECK(var->mode() == CONST_LEGACY); |
| __ LoadRoot(a0, Heap::kUndefinedValueRootIndex); |
| __ Movz(v0, a0, at); // Conditional move: Undefined if TheHole. |
| } |
| context()->Plug(v0); |
| 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); |
| __ li(a1, Operand(var->name())); |
| __ Push(cp, a1); // Context and name. |
| Runtime::FunctionId function_id = |
| typeof_mode == NOT_INSIDE_TYPEOF |
| ? Runtime::kLoadLookupSlot |
| : Runtime::kLoadLookupSlotNoReferenceError; |
| __ CallRuntime(function_id); |
| __ bind(&done); |
| context()->Plug(v0); |
| } |
| } |
| } |
| |
| |
| void FullCodeGenerator::VisitRegExpLiteral(RegExpLiteral* expr) { |
| Comment cmnt(masm_, "[ RegExpLiteral"); |
| __ lw(a3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| __ li(a2, Operand(Smi::FromInt(expr->literal_index()))); |
| __ li(a1, Operand(expr->pattern())); |
| __ li(a0, Operand(Smi::FromInt(expr->flags()))); |
| FastCloneRegExpStub stub(isolate()); |
| __ CallStub(&stub); |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitAccessor(ObjectLiteralProperty* property) { |
| Expression* expression = (property == NULL) ? NULL : property->value(); |
| if (expression == NULL) { |
| __ LoadRoot(a1, Heap::kNullValueRootIndex); |
| __ push(a1); |
| } else { |
| VisitForStackValue(expression); |
| if (NeedsHomeObject(expression)) { |
| DCHECK(property->kind() == ObjectLiteral::Property::GETTER || |
| property->kind() == ObjectLiteral::Property::SETTER); |
| int offset = property->kind() == ObjectLiteral::Property::GETTER ? 2 : 3; |
| EmitSetHomeObject(expression, offset, property->GetSlot()); |
| } |
| } |
| } |
| |
| |
| void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) { |
| Comment cmnt(masm_, "[ ObjectLiteral"); |
| |
| Handle<FixedArray> constant_properties = expr->constant_properties(); |
| __ lw(a3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| __ li(a2, Operand(Smi::FromInt(expr->literal_index()))); |
| __ li(a1, Operand(constant_properties)); |
| __ li(a0, Operand(Smi::FromInt(expr->ComputeFlags()))); |
| if (MustCreateObjectLiteralWithRuntime(expr)) { |
| __ Push(a3, a2, a1, a0); |
| __ CallRuntime(Runtime::kCreateObjectLiteral); |
| } 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 v0. |
| bool result_saved = false; |
| |
| AccessorTable accessor_table(zone()); |
| int property_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(v0); // 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); |
| __ mov(StoreDescriptor::ValueRegister(), result_register()); |
| DCHECK(StoreDescriptor::ValueRegister().is(a0)); |
| __ li(StoreDescriptor::NameRegister(), Operand(key->value())); |
| __ lw(StoreDescriptor::ReceiverRegister(), MemOperand(sp)); |
| EmitLoadStoreICSlot(property->GetSlot(0)); |
| CallStoreIC(); |
| PrepareForBailoutForId(key->id(), NO_REGISTERS); |
| |
| if (NeedsHomeObject(value)) { |
| EmitSetHomeObjectAccumulator(value, 0, property->GetSlot(1)); |
| } |
| } else { |
| VisitForEffect(value); |
| } |
| break; |
| } |
| // Duplicate receiver on stack. |
| __ lw(a0, MemOperand(sp)); |
| __ push(a0); |
| VisitForStackValue(key); |
| VisitForStackValue(value); |
| if (property->emit_store()) { |
| if (NeedsHomeObject(value)) { |
| EmitSetHomeObject(value, 2, property->GetSlot()); |
| } |
| __ li(a0, Operand(Smi::FromInt(SLOPPY))); // PropertyAttributes. |
| __ push(a0); |
| __ CallRuntime(Runtime::kSetProperty); |
| } else { |
| __ Drop(3); |
| } |
| break; |
| case ObjectLiteral::Property::PROTOTYPE: |
| // Duplicate receiver on stack. |
| __ lw(a0, MemOperand(sp)); |
| __ push(a0); |
| VisitForStackValue(value); |
| DCHECK(property->emit_store()); |
| __ CallRuntime(Runtime::kInternalSetPrototype); |
| PrepareForBailoutForId(expr->GetIdForPropertySet(property_index), |
| NO_REGISTERS); |
| break; |
| case ObjectLiteral::Property::GETTER: |
| if (property->emit_store()) { |
| accessor_table.lookup(key)->second->getter = property; |
| } |
| break; |
| case ObjectLiteral::Property::SETTER: |
| if (property->emit_store()) { |
| accessor_table.lookup(key)->second->setter = property; |
| } |
| 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) { |
| __ lw(a0, MemOperand(sp)); // Duplicate receiver. |
| __ push(a0); |
| VisitForStackValue(it->first); |
| EmitAccessor(it->second->getter); |
| EmitAccessor(it->second->setter); |
| __ li(a0, Operand(Smi::FromInt(NONE))); |
| __ push(a0); |
| __ CallRuntime(Runtime::kDefineAccessorPropertyUnchecked); |
| } |
| |
| // 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(v0); // Save result on the stack |
| result_saved = true; |
| } |
| |
| __ lw(a0, MemOperand(sp)); // Duplicate receiver. |
| __ push(a0); |
| |
| if (property->kind() == ObjectLiteral::Property::PROTOTYPE) { |
| DCHECK(!property->is_computed_name()); |
| VisitForStackValue(value); |
| DCHECK(property->emit_store()); |
| __ CallRuntime(Runtime::kInternalSetPrototype); |
| PrepareForBailoutForId(expr->GetIdForPropertySet(property_index), |
| NO_REGISTERS); |
| } else { |
| EmitPropertyKey(property, expr->GetIdForPropertyName(property_index)); |
| VisitForStackValue(value); |
| if (NeedsHomeObject(value)) { |
| EmitSetHomeObject(value, 2, property->GetSlot()); |
| } |
| |
| switch (property->kind()) { |
| case ObjectLiteral::Property::CONSTANT: |
| case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
| case ObjectLiteral::Property::COMPUTED: |
| if (property->emit_store()) { |
| __ li(a0, Operand(Smi::FromInt(NONE))); |
| __ push(a0); |
| __ CallRuntime(Runtime::kDefineDataPropertyUnchecked); |
| } else { |
| __ Drop(3); |
| } |
| break; |
| |
| case ObjectLiteral::Property::PROTOTYPE: |
| UNREACHABLE(); |
| break; |
| |
| case ObjectLiteral::Property::GETTER: |
| __ li(a0, Operand(Smi::FromInt(NONE))); |
| __ push(a0); |
| __ CallRuntime(Runtime::kDefineGetterPropertyUnchecked); |
| break; |
| |
| case ObjectLiteral::Property::SETTER: |
| __ li(a0, Operand(Smi::FromInt(NONE))); |
| __ push(a0); |
| __ CallRuntime(Runtime::kDefineSetterPropertyUnchecked); |
| break; |
| } |
| } |
| } |
| |
| if (expr->has_function()) { |
| DCHECK(result_saved); |
| __ lw(a0, MemOperand(sp)); |
| __ push(a0); |
| __ CallRuntime(Runtime::kToFastProperties); |
| } |
| |
| if (result_saved) { |
| context()->PlugTOS(); |
| } else { |
| context()->Plug(v0); |
| } |
| } |
| |
| |
| void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) { |
| Comment cmnt(masm_, "[ ArrayLiteral"); |
| |
| Handle<FixedArray> constant_elements = expr->constant_elements(); |
| bool has_fast_elements = |
| IsFastObjectElementsKind(expr->constant_elements_kind()); |
| |
| 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; |
| } |
| |
| __ mov(a0, result_register()); |
| __ lw(a3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| __ li(a2, Operand(Smi::FromInt(expr->literal_index()))); |
| __ li(a1, Operand(constant_elements)); |
| if (MustCreateArrayLiteralWithRuntime(expr)) { |
| __ li(a0, Operand(Smi::FromInt(expr->ComputeFlags()))); |
| __ Push(a3, a2, a1, a0); |
| __ CallRuntime(Runtime::kCreateArrayLiteral); |
| } 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(v0); // array literal |
| result_saved = true; |
| } |
| |
| VisitForAccumulatorValue(subexpr); |
| |
| __ li(StoreDescriptor::NameRegister(), Operand(Smi::FromInt(array_index))); |
| __ lw(StoreDescriptor::ReceiverRegister(), MemOperand(sp, 0)); |
| __ mov(StoreDescriptor::ValueRegister(), result_register()); |
| EmitLoadStoreICSlot(expr->LiteralFeedbackSlot()); |
| Handle<Code> ic = |
| CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
| CallIC(ic); |
| |
| 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(v0); |
| result_saved = false; |
| } |
| for (; array_index < length; array_index++) { |
| Expression* subexpr = subexprs->at(array_index); |
| |
| __ Push(v0); |
| if (subexpr->IsSpread()) { |
| VisitForStackValue(subexpr->AsSpread()->expression()); |
| __ InvokeBuiltin(Context::CONCAT_ITERABLE_TO_ARRAY_BUILTIN_INDEX, |
| CALL_FUNCTION); |
| } else { |
| VisitForStackValue(subexpr); |
| __ CallRuntime(Runtime::kAppendElement); |
| } |
| |
| PrepareForBailoutForId(expr->GetIdForElement(array_index), NO_REGISTERS); |
| } |
| |
| if (result_saved) { |
| context()->PlugTOS(); |
| } else { |
| context()->Plug(v0); |
| } |
| } |
| |
| |
| 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()); |
| __ lw(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 = a1; |
| __ lw(scratch, MemOperand(sp, kPointerSize)); |
| __ Push(scratch, result_register()); |
| } |
| break; |
| case KEYED_SUPER_PROPERTY: { |
| const Register scratch = a1; |
| VisitForStackValue( |
| property->obj()->AsSuperPropertyReference()->this_var()); |
| VisitForAccumulatorValue( |
| property->obj()->AsSuperPropertyReference()->home_object()); |
| __ Move(scratch, result_register()); |
| VisitForAccumulatorValue(property->key()); |
| __ Push(scratch, result_register()); |
| if (expr->is_compound()) { |
| const Register scratch1 = t0; |
| __ lw(scratch1, MemOperand(sp, 2 * kPointerSize)); |
| __ Push(scratch1, scratch, result_register()); |
| } |
| break; |
| } |
| case KEYED_PROPERTY: |
| // We need the key and receiver on both the stack and in v0 and a1. |
| if (expr->is_compound()) { |
| VisitForStackValue(property->obj()); |
| VisitForStackValue(property->key()); |
| __ lw(LoadDescriptor::ReceiverRegister(), |
| MemOperand(sp, 1 * kPointerSize)); |
| __ lw(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(v0); // 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(v0); |
| break; |
| case NAMED_PROPERTY: |
| EmitNamedPropertyAssignment(expr); |
| break; |
| case NAMED_SUPER_PROPERTY: |
| EmitNamedSuperPropertyStore(property); |
| context()->Plug(v0); |
| break; |
| case KEYED_SUPER_PROPERTY: |
| EmitKeyedSuperPropertyStore(property); |
| context()->Plug(v0); |
| 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())); |
| __ li(a1, Operand(Smi::FromInt(continuation.pos()))); |
| __ sw(a1, FieldMemOperand(v0, JSGeneratorObject::kContinuationOffset)); |
| __ sw(cp, FieldMemOperand(v0, JSGeneratorObject::kContextOffset)); |
| __ mov(a1, cp); |
| __ RecordWriteField(v0, JSGeneratorObject::kContextOffset, a1, a2, |
| kRAHasBeenSaved, kDontSaveFPRegs); |
| __ Addu(a1, fp, Operand(StandardFrameConstants::kExpressionsOffset)); |
| __ Branch(&post_runtime, eq, sp, Operand(a1)); |
| __ push(v0); // generator object |
| __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 1); |
| __ lw(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()); |
| __ li(a1, Operand(Smi::FromInt(JSGeneratorObject::kGeneratorClosed))); |
| __ sw(a1, 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; |
| Register load_receiver = LoadDescriptor::ReceiverRegister(); |
| Register load_name = LoadDescriptor::NameRegister(); |
| |
| // Initial send value is undefined. |
| __ LoadRoot(a0, Heap::kUndefinedValueRootIndex); |
| __ Branch(&l_next); |
| |
| // catch (e) { receiver = iter; f = 'throw'; arg = e; goto l_call; } |
| __ bind(&l_catch); |
| __ mov(a0, v0); |
| __ LoadRoot(load_name, Heap::kthrow_stringRootIndex); // "throw" |
| __ lw(a3, MemOperand(sp, 1 * kPointerSize)); // iter |
| __ Push(load_name, a3, a0); // "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(a0); // result |
| int handler_index = NewHandlerTableEntry(); |
| EnterTryBlock(handler_index, &l_catch); |
| const int try_block_size = TryCatch::kElementCount * kPointerSize; |
| __ push(a0); // result |
| |
| __ jmp(&l_suspend); |
| __ bind(&l_continuation); |
| __ RecordGeneratorContinuation(); |
| __ mov(a0, v0); |
| __ jmp(&l_resume); |
| |
| __ bind(&l_suspend); |
| const int generator_object_depth = kPointerSize + try_block_size; |
| __ lw(a0, MemOperand(sp, generator_object_depth)); |
| __ push(a0); // g |
| __ Push(Smi::FromInt(handler_index)); // handler-index |
| DCHECK(l_continuation.pos() > 0 && Smi::IsValid(l_continuation.pos())); |
| __ li(a1, Operand(Smi::FromInt(l_continuation.pos()))); |
| __ sw(a1, FieldMemOperand(a0, JSGeneratorObject::kContinuationOffset)); |
| __ sw(cp, FieldMemOperand(a0, JSGeneratorObject::kContextOffset)); |
| __ mov(a1, cp); |
| __ RecordWriteField(a0, JSGeneratorObject::kContextOffset, a1, a2, |
| kRAHasBeenSaved, kDontSaveFPRegs); |
| __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 2); |
| __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| __ pop(v0); // result |
| EmitReturnSequence(); |
| __ mov(a0, v0); |
| __ bind(&l_resume); // received in a0 |
| ExitTryBlock(handler_index); |
| |
| // receiver = iter; f = 'next'; arg = received; |
| __ bind(&l_next); |
| |
| __ LoadRoot(load_name, Heap::knext_stringRootIndex); // "next" |
| __ lw(a3, MemOperand(sp, 1 * kPointerSize)); // iter |
| __ Push(load_name, a3, a0); // "next", iter, received |
| |
| // result = receiver[f](arg); |
| __ bind(&l_call); |
| __ lw(load_receiver, MemOperand(sp, kPointerSize)); |
| __ lw(load_name, MemOperand(sp, 2 * kPointerSize)); |
| __ li(LoadDescriptor::SlotRegister(), |
| Operand(SmiFromSlot(expr->KeyedLoadFeedbackSlot()))); |
| Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate(), SLOPPY).code(); |
| CallIC(ic, TypeFeedbackId::None()); |
| __ mov(a0, v0); |
| __ mov(a1, a0); |
| __ sw(a1, MemOperand(sp, 2 * kPointerSize)); |
| SetCallPosition(expr); |
| __ li(a0, Operand(1)); |
| __ Call( |
| isolate()->builtins()->Call(ConvertReceiverMode::kNotNullOrUndefined), |
| RelocInfo::CODE_TARGET); |
| |
| __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| __ Drop(1); // The function is still on the stack; drop it. |
| |
| // if (!result.done) goto l_try; |
| __ Move(load_receiver, v0); |
| |
| __ push(load_receiver); // save result |
| __ LoadRoot(load_name, Heap::kdone_stringRootIndex); // "done" |
| __ li(LoadDescriptor::SlotRegister(), |
| Operand(SmiFromSlot(expr->DoneFeedbackSlot()))); |
| CallLoadIC(NOT_INSIDE_TYPEOF); // v0=result.done |
| __ mov(a0, v0); |
| Handle<Code> bool_ic = ToBooleanStub::GetUninitialized(isolate()); |
| CallIC(bool_ic); |
| __ LoadRoot(at, Heap::kTrueValueRootIndex); |
| __ Branch(&l_try, ne, result_register(), Operand(at)); |
| |
| // result.value |
| __ pop(load_receiver); // result |
| __ LoadRoot(load_name, Heap::kvalue_stringRootIndex); // "value" |
| __ li(LoadDescriptor::SlotRegister(), |
| Operand(SmiFromSlot(expr->ValueFeedbackSlot()))); |
| CallLoadIC(NOT_INSIDE_TYPEOF); // v0=result.value |
| context()->DropAndPlug(2, v0); // drop iter and g |
| break; |
| } |
| } |
| } |
| |
| |
| void FullCodeGenerator::EmitGeneratorResume(Expression *generator, |
| Expression *value, |
| JSGeneratorObject::ResumeMode resume_mode) { |
| // The value stays in a0, 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. |
| // a1 will hold the generator object until the activation has been resumed. |
| VisitForStackValue(generator); |
| VisitForAccumulatorValue(value); |
| __ pop(a1); |
| |
| // Load suspended function and context. |
| __ lw(cp, FieldMemOperand(a1, JSGeneratorObject::kContextOffset)); |
| __ lw(t0, FieldMemOperand(a1, JSGeneratorObject::kFunctionOffset)); |
| |
| // Load receiver and store as the first argument. |
| __ lw(a2, FieldMemOperand(a1, JSGeneratorObject::kReceiverOffset)); |
| __ push(a2); |
| |
| // Push holes for the rest of the arguments to the generator function. |
| __ lw(a3, FieldMemOperand(t0, JSFunction::kSharedFunctionInfoOffset)); |
| __ lw(a3, |
| FieldMemOperand(a3, SharedFunctionInfo::kFormalParameterCountOffset)); |
| __ LoadRoot(a2, Heap::kTheHoleValueRootIndex); |
| Label push_argument_holes, push_frame; |
| __ bind(&push_argument_holes); |
| __ Subu(a3, a3, Operand(Smi::FromInt(1))); |
| __ Branch(&push_frame, lt, a3, Operand(zero_reg)); |
| __ push(a2); |
| __ jmp(&push_argument_holes); |
| |
| // Enter a new JavaScript frame, and initialize its slots as they were when |
| // the generator was suspended. |
| Label resume_frame, done; |
| __ bind(&push_frame); |
| __ Call(&resume_frame); |
| __ jmp(&done); |
| __ bind(&resume_frame); |
| // ra = return address. |
| // fp = caller's frame pointer. |
| // cp = callee's context, |
| // t0 = callee's JS function. |
| __ Push(ra, fp, cp, t0); |
| // Adjust FP to point to saved FP. |
| __ Addu(fp, sp, 2 * kPointerSize); |
| |
| // Load the operand stack size. |
| __ lw(a3, FieldMemOperand(a1, JSGeneratorObject::kOperandStackOffset)); |
| __ lw(a3, FieldMemOperand(a3, FixedArray::kLengthOffset)); |
| __ SmiUntag(a3); |
| |
| // 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; |
| __ Branch(&slow_resume, ne, a3, Operand(zero_reg)); |
| __ lw(a3, FieldMemOperand(t0, JSFunction::kCodeEntryOffset)); |
| __ lw(a2, FieldMemOperand(a1, JSGeneratorObject::kContinuationOffset)); |
| __ SmiUntag(a2); |
| __ Addu(a3, a3, Operand(a2)); |
| __ li(a2, Operand(Smi::FromInt(JSGeneratorObject::kGeneratorExecuting))); |
| __ sw(a2, FieldMemOperand(a1, JSGeneratorObject::kContinuationOffset)); |
| __ Jump(a3); |
| __ 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); |
| __ Subu(a3, a3, Operand(1)); |
| __ Branch(&call_resume, lt, a3, Operand(zero_reg)); |
| __ push(a2); |
| __ Branch(&push_operand_holes); |
| __ bind(&call_resume); |
| DCHECK(!result_register().is(a1)); |
| __ Push(a1, result_register()); |
| __ Push(Smi::FromInt(resume_mode)); |
| __ CallRuntime(Runtime::kResumeJSGeneratorObject); |
| // Not reached: the runtime call returns elsewhere. |
| __ stop("not-reached"); |
| |
| __ bind(&done); |
| context()->Plug(result_register()); |
| } |
| |
| |
| void FullCodeGenerator::EmitCreateIteratorResult(bool done) { |
| Label allocate, done_allocate; |
| |
| __ Allocate(JSIteratorResult::kSize, v0, a2, a3, &allocate, TAG_OBJECT); |
| __ jmp(&done_allocate); |
| |
| __ bind(&allocate); |
| __ Push(Smi::FromInt(JSIteratorResult::kSize)); |
| __ CallRuntime(Runtime::kAllocateInNewSpace); |
| |
| __ bind(&done_allocate); |
| __ LoadNativeContextSlot(Context::ITERATOR_RESULT_MAP_INDEX, a1); |
| __ pop(a2); |
| __ LoadRoot(a3, |
| done ? Heap::kTrueValueRootIndex : Heap::kFalseValueRootIndex); |
| __ LoadRoot(t0, Heap::kEmptyFixedArrayRootIndex); |
| __ sw(a1, FieldMemOperand(v0, HeapObject::kMapOffset)); |
| __ sw(t0, FieldMemOperand(v0, JSObject::kPropertiesOffset)); |
| __ sw(t0, FieldMemOperand(v0, JSObject::kElementsOffset)); |
| __ sw(a2, FieldMemOperand(v0, JSIteratorResult::kValueOffset)); |
| __ sw(a3, FieldMemOperand(v0, JSIteratorResult::kDoneOffset)); |
| STATIC_ASSERT(JSIteratorResult::kSize == 5 * kPointerSize); |
| } |
| |
| |
| void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) { |
| SetExpressionPosition(prop); |
| Literal* key = prop->key()->AsLiteral(); |
| DCHECK(!prop->IsSuperAccess()); |
| |
| __ li(LoadDescriptor::NameRegister(), Operand(key->value())); |
| __ li(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); |
| } |
| |
| |
| void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) { |
| SetExpressionPosition(prop); |
| Handle<Code> ic = CodeFactory::KeyedLoadIC(isolate(), language_mode()).code(); |
| __ li(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); |
| } |
| |
| |
| void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr, |
| Token::Value op, |
| Expression* left_expr, |
| Expression* right_expr) { |
| Label done, smi_case, stub_call; |
| |
| Register scratch1 = a2; |
| Register scratch2 = a3; |
| |
| // Get the arguments. |
| Register left = a1; |
| Register right = a0; |
| __ pop(left); |
| __ mov(a0, result_register()); |
| |
| // Perform combined smi check on both operands. |
| __ Or(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); |
| __ srav(right, left, scratch1); |
| __ And(v0, right, Operand(~kSmiTagMask)); |
| break; |
| case Token::SHL: { |
| __ SmiUntag(scratch1, left); |
| __ GetLeastBitsFromSmi(scratch2, right, 5); |
| __ sllv(scratch1, scratch1, scratch2); |
| __ Addu(scratch2, scratch1, Operand(0x40000000)); |
| __ Branch(&stub_call, lt, scratch2, Operand(zero_reg)); |
| __ SmiTag(v0, scratch1); |
| break; |
| } |
| case Token::SHR: { |
| __ SmiUntag(scratch1, left); |
| __ GetLeastBitsFromSmi(scratch2, right, 5); |
| __ srlv(scratch1, scratch1, scratch2); |
| __ And(scratch2, scratch1, 0xc0000000); |
| __ Branch(&stub_call, ne, scratch2, Operand(zero_reg)); |
| __ SmiTag(v0, scratch1); |
| break; |
| } |
| case Token::ADD: |
| __ AddBranchOvf(v0, left, Operand(right), &stub_call); |
| break; |
| case Token::SUB: |
| __ SubBranchOvf(v0, left, Operand(right), &stub_call); |
| break; |
| case Token::MUL: { |
| __ SmiUntag(scratch1, right); |
| __ Mul(scratch2, v0, left, scratch1); |
| __ sra(scratch1, v0, 31); |
| __ Branch(&stub_call, ne, scratch1, Operand(scratch2)); |
| __ Branch(&done, ne, v0, Operand(zero_reg)); |
| __ Addu(scratch2, right, left); |
| __ Branch(&stub_call, lt, scratch2, Operand(zero_reg)); |
| DCHECK(Smi::FromInt(0) == 0); |
| __ mov(v0, zero_reg); |
| break; |
| } |
| case Token::BIT_OR: |
| __ Or(v0, left, Operand(right)); |
| break; |
| case Token::BIT_AND: |
| __ And(v0, left, Operand(right)); |
| break; |
| case Token::BIT_XOR: |
| __ Xor(v0, left, Operand(right)); |
| break; |
| default: |
| UNREACHABLE(); |
| } |
| |
| __ bind(&done); |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit) { |
| // Constructor is in v0. |
| DCHECK(lit != NULL); |
| __ push(v0); |
| |
| // No access check is needed here since the constructor is created by the |
| // class literal. |
| Register scratch = a1; |
| __ lw(scratch, |
| FieldMemOperand(v0, 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()) { |
| __ lw(scratch, MemOperand(sp, kPointerSize)); // constructor |
| } else { |
| __ lw(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); |
| __ push(v0); |
| } |
| |
| VisitForStackValue(value); |
| if (NeedsHomeObject(value)) { |
| EmitSetHomeObject(value, 2, property->GetSlot()); |
| } |
| |
| switch (property->kind()) { |
| case ObjectLiteral::Property::CONSTANT: |
| case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
| case ObjectLiteral::Property::PROTOTYPE: |
| UNREACHABLE(); |
| case ObjectLiteral::Property::COMPUTED: |
| __ CallRuntime(Runtime::kDefineClassMethod); |
| break; |
| |
| case ObjectLiteral::Property::GETTER: |
| __ li(a0, Operand(Smi::FromInt(DONT_ENUM))); |
| __ push(a0); |
| __ CallRuntime(Runtime::kDefineGetterPropertyUnchecked); |
| break; |
| |
| case ObjectLiteral::Property::SETTER: |
| __ li(a0, Operand(Smi::FromInt(DONT_ENUM))); |
| __ push(a0); |
| __ CallRuntime(Runtime::kDefineSetterPropertyUnchecked); |
| break; |
| |
| default: |
| UNREACHABLE(); |
| } |
| } |
| |
| // Set both the prototype and constructor to have fast properties, and also |
| // freeze them in strong mode. |
| __ CallRuntime(Runtime::kFinalizeClassDefinition); |
| } |
| |
| |
| void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr, Token::Value op) { |
| __ mov(a0, result_register()); |
| __ pop(a1); |
| 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(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitAssignment(Expression* expr, |
| FeedbackVectorSlot 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(result_register()); // Preserve value. |
| VisitForAccumulatorValue(prop->obj()); |
| __ mov(StoreDescriptor::ReceiverRegister(), result_register()); |
| __ pop(StoreDescriptor::ValueRegister()); // Restore value. |
| __ li(StoreDescriptor::NameRegister(), |
| Operand(prop->key()->AsLiteral()->value())); |
| EmitLoadStoreICSlot(slot); |
| CallStoreIC(); |
| break; |
| } |
| case NAMED_SUPER_PROPERTY: { |
| __ Push(v0); |
| VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
| VisitForAccumulatorValue( |
| prop->obj()->AsSuperPropertyReference()->home_object()); |
| // stack: value, this; v0: home_object |
| Register scratch = a2; |
| Register scratch2 = a3; |
| __ mov(scratch, result_register()); // home_object |
| __ lw(v0, MemOperand(sp, kPointerSize)); // value |
| __ lw(scratch2, MemOperand(sp, 0)); // this |
| __ sw(scratch2, MemOperand(sp, kPointerSize)); // this |
| __ sw(scratch, MemOperand(sp, 0)); // home_object |
| // stack: this, home_object; v0: value |
| EmitNamedSuperPropertyStore(prop); |
| break; |
| } |
| case KEYED_SUPER_PROPERTY: { |
| __ Push(v0); |
| VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
| VisitForStackValue( |
| prop->obj()->AsSuperPropertyReference()->home_object()); |
| VisitForAccumulatorValue(prop->key()); |
| Register scratch = a2; |
| Register scratch2 = a3; |
| __ lw(scratch2, MemOperand(sp, 2 * kPointerSize)); // value |
| // stack: value, this, home_object; v0: key, a3: value |
| __ lw(scratch, MemOperand(sp, kPointerSize)); // this |
| __ sw(scratch, MemOperand(sp, 2 * kPointerSize)); |
| __ lw(scratch, MemOperand(sp, 0)); // home_object |
| __ sw(scratch, MemOperand(sp, kPointerSize)); |
| __ sw(v0, MemOperand(sp, 0)); |
| __ Move(v0, scratch2); |
| // stack: this, home_object, key; v0: value. |
| EmitKeyedSuperPropertyStore(prop); |
| break; |
| } |
| case KEYED_PROPERTY: { |
| __ push(result_register()); // Preserve value. |
| VisitForStackValue(prop->obj()); |
| VisitForAccumulatorValue(prop->key()); |
| __ mov(StoreDescriptor::NameRegister(), result_register()); |
| __ Pop(StoreDescriptor::ValueRegister(), |
| StoreDescriptor::ReceiverRegister()); |
| EmitLoadStoreICSlot(slot); |
| Handle<Code> ic = |
| CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
| CallIC(ic); |
| break; |
| } |
| } |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot( |
| Variable* var, MemOperand location) { |
| __ sw(result_register(), location); |
| if (var->IsContextSlot()) { |
| // RecordWrite may destroy all its register arguments. |
| __ Move(a3, result_register()); |
| int offset = Context::SlotOffset(var->index()); |
| __ RecordWriteContextSlot( |
| a1, offset, a3, a2, kRAHasBeenSaved, kDontSaveFPRegs); |
| } |
| } |
| |
| |
| void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op, |
| FeedbackVectorSlot slot) { |
| if (var->IsUnallocated()) { |
| // Global var, const, or let. |
| __ mov(StoreDescriptor::ValueRegister(), result_register()); |
| __ li(StoreDescriptor::NameRegister(), Operand(var->name())); |
| __ LoadGlobalObject(StoreDescriptor::ReceiverRegister()); |
| EmitLoadStoreICSlot(slot); |
| CallStoreIC(); |
| |
| } else if (var->mode() == LET && op != Token::INIT) { |
| // Non-initializing assignment to let variable needs a write barrier. |
| DCHECK(!var->IsLookupSlot()); |
| DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| Label assign; |
| MemOperand location = VarOperand(var, a1); |
| __ lw(a3, location); |
| __ LoadRoot(t0, Heap::kTheHoleValueRootIndex); |
| __ Branch(&assign, ne, a3, Operand(t0)); |
| __ li(a3, Operand(var->name())); |
| __ push(a3); |
| __ CallRuntime(Runtime::kThrowReferenceError); |
| // Perform the assignment. |
| __ bind(&assign); |
| EmitStoreToStackLocalOrContextSlot(var, location); |
| |
| } else if (var->mode() == CONST && op != Token::INIT) { |
| // Assignment to const variable needs a write barrier. |
| DCHECK(!var->IsLookupSlot()); |
| DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| Label const_error; |
| MemOperand location = VarOperand(var, a1); |
| __ lw(a3, location); |
| __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| __ Branch(&const_error, ne, a3, Operand(at)); |
| __ li(a3, Operand(var->name())); |
| __ push(a3); |
| __ CallRuntime(Runtime::kThrowReferenceError); |
| __ bind(&const_error); |
| __ CallRuntime(Runtime::kThrowConstAssignError); |
| |
| } else if (var->is_this() && var->mode() == CONST && op == Token::INIT) { |
| // Initializing assignment to const {this} needs a write barrier. |
| DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| Label uninitialized_this; |
| MemOperand location = VarOperand(var, a1); |
| __ lw(a3, location); |
| __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| __ Branch(&uninitialized_this, eq, a3, Operand(at)); |
| __ li(a0, Operand(var->name())); |
| __ Push(a0); |
| __ CallRuntime(Runtime::kThrowReferenceError); |
| __ bind(&uninitialized_this); |
| EmitStoreToStackLocalOrContextSlot(var, location); |
| |
| } else if (!var->is_const_mode() || |
| (var->mode() == CONST && op == Token::INIT)) { |
| if (var->IsLookupSlot()) { |
| // Assignment to var. |
| __ li(a1, Operand(var->name())); |
| __ li(a0, Operand(Smi::FromInt(language_mode()))); |
| __ Push(v0, cp, a1, a0); // Value, context, name, language mode. |
| __ CallRuntime(Runtime::kStoreLookupSlot); |
| } else { |
| // Assignment to var or initializing assignment to let/const in harmony |
| // mode. |
| DCHECK((var->IsStackAllocated() || var->IsContextSlot())); |
| MemOperand location = VarOperand(var, a1); |
| if (generate_debug_code_ && var->mode() == LET && op == Token::INIT) { |
| // Check for an uninitialized let binding. |
| __ lw(a2, location); |
| __ LoadRoot(t0, Heap::kTheHoleValueRootIndex); |
| __ Check(eq, kLetBindingReInitialization, a2, Operand(t0)); |
| } |
| EmitStoreToStackLocalOrContextSlot(var, location); |
| } |
| |
| } else if (var->mode() == CONST_LEGACY && op == Token::INIT) { |
| // Const initializers need a write barrier. |
| DCHECK(!var->IsParameter()); // No const parameters. |
| if (var->IsLookupSlot()) { |
| __ li(a0, Operand(var->name())); |
| __ Push(v0, cp, a0); // Context and name. |
| __ CallRuntime(Runtime::kInitializeLegacyConstLookupSlot); |
| } else { |
| DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| Label skip; |
| MemOperand location = VarOperand(var, a1); |
| __ lw(a2, location); |
| __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| __ Branch(&skip, ne, a2, Operand(at)); |
| EmitStoreToStackLocalOrContextSlot(var, location); |
| __ bind(&skip); |
| } |
| |
| } else { |
| DCHECK(var->mode() == CONST_LEGACY && op != Token::INIT); |
| if (is_strict(language_mode())) { |
| __ CallRuntime(Runtime::kThrowConstAssignError); |
| } |
| // 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::ValueRegister(), result_register()); |
| __ li(StoreDescriptor::NameRegister(), |
| Operand(prop->key()->AsLiteral()->value())); |
| __ pop(StoreDescriptor::ReceiverRegister()); |
| EmitLoadStoreICSlot(expr->AssignmentSlot()); |
| CallStoreIC(); |
| |
| PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) { |
| // Assignment to named property of super. |
| // v0 : value |
| // stack : receiver ('this'), home_object |
| DCHECK(prop != NULL); |
| Literal* key = prop->key()->AsLiteral(); |
| DCHECK(key != NULL); |
| |
| __ Push(key->value()); |
| __ Push(v0); |
| __ CallRuntime((is_strict(language_mode()) ? Runtime::kStoreToSuper_Strict |
| : Runtime::kStoreToSuper_Sloppy)); |
| } |
| |
| |
| void FullCodeGenerator::EmitKeyedSuperPropertyStore(Property* prop) { |
| // Assignment to named property of super. |
| // v0 : value |
| // stack : receiver ('this'), home_object, key |
| DCHECK(prop != NULL); |
| |
| __ Push(v0); |
| __ CallRuntime((is_strict(language_mode()) |
| ? Runtime::kStoreKeyedToSuper_Strict |
| : Runtime::kStoreKeyedToSuper_Sloppy)); |
| } |
| |
| |
| void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) { |
| // Assignment to a property, using a keyed store IC. |
| // Call keyed store IC. |
| // The arguments are: |
| // - a0 is the value, |
| // - a1 is the key, |
| // - a2 is the receiver. |
| __ mov(StoreDescriptor::ValueRegister(), result_register()); |
| __ Pop(StoreDescriptor::ReceiverRegister(), StoreDescriptor::NameRegister()); |
| DCHECK(StoreDescriptor::ValueRegister().is(a0)); |
| |
| Handle<Code> ic = |
| CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
| EmitLoadStoreICSlot(expr->AssignmentSlot()); |
| CallIC(ic); |
| |
| PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
| context()->Plug(v0); |
| } |
| |
| |
| 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(), v0); |
| 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(), v0); |
| __ 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(v0); |
| } |
| |
| |
| void FullCodeGenerator::CallIC(Handle<Code> code, |
| TypeFeedbackId id) { |
| ic_total_count_++; |
| __ Call(code, RelocInfo::CODE_TARGET, id); |
| } |
| |
| |
| // Code common for calls using the IC. |
| void FullCodeGenerator::EmitCallWithLoadIC(Call* expr) { |
| Expression* callee = expr->expression(); |
| |
| // Get the target function. |
| ConvertReceiverMode convert_mode; |
| if (callee->IsVariableProxy()) { |
| { 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(at, Heap::kUndefinedValueRootIndex); |
| __ push(at); |
| convert_mode = ConvertReceiverMode::kNullOrUndefined; |
| } else { |
| // Load the function from the receiver. |
| DCHECK(callee->IsProperty()); |
| DCHECK(!callee->AsProperty()->IsSuperAccess()); |
| __ lw(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0)); |
| EmitNamedPropertyLoad(callee->AsProperty()); |
| PrepareForBailoutForId(callee->AsProperty()->LoadId(), TOS_REG); |
| // Push the target function under the receiver. |
| __ lw(at, MemOperand(sp, 0)); |
| __ push(at); |
| __ sw(v0, MemOperand(sp, kPointerSize)); |
| convert_mode = ConvertReceiverMode::kNotNullOrUndefined; |
| } |
| |
| EmitCall(expr, convert_mode); |
| } |
| |
| |
| void FullCodeGenerator::EmitSuperCallWithLoadIC(Call* expr) { |
| SetExpressionPosition(expr); |
| Expression* callee = expr->expression(); |
| DCHECK(callee->IsProperty()); |
| Property* prop = callee->AsProperty(); |
| DCHECK(prop->IsSuperAccess()); |
| |
| Literal* key = prop->key()->AsLiteral(); |
| DCHECK(!key->value()->IsSmi()); |
| // Load the function from the receiver. |
| const Register scratch = a1; |
| SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference(); |
| VisitForAccumulatorValue(super_ref->home_object()); |
| __ mov(scratch, v0); |
| VisitForAccumulatorValue(super_ref->this_var()); |
| __ Push(scratch, v0, v0, 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); |
| |
| // Replace home_object with target function. |
| __ sw(v0, MemOperand(sp, kPointerSize)); |
| |
| // Stack here: |
| // - target function |
| // - this (receiver) |
| EmitCall(expr); |
| } |
| |
| |
| // 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()); |
| __ lw(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0)); |
| __ Move(LoadDescriptor::NameRegister(), v0); |
| EmitKeyedPropertyLoad(callee->AsProperty()); |
| PrepareForBailoutForId(callee->AsProperty()->LoadId(), TOS_REG); |
| |
| // Push the target function under the receiver. |
| __ lw(at, MemOperand(sp, 0)); |
| __ push(at); |
| __ sw(v0, MemOperand(sp, kPointerSize)); |
| |
| EmitCall(expr, ConvertReceiverMode::kNotNullOrUndefined); |
| } |
| |
| |
| 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 = a1; |
| SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference(); |
| VisitForAccumulatorValue(super_ref->home_object()); |
| __ Move(scratch, v0); |
| VisitForAccumulatorValue(super_ref->this_var()); |
| __ Push(scratch, v0, v0, 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); |
| |
| // Replace home_object with target function. |
| __ sw(v0, MemOperand(sp, kPointerSize)); |
| |
| // Stack here: |
| // - target function |
| // - this (receiver) |
| EmitCall(expr); |
| } |
| |
| |
| void FullCodeGenerator::EmitCall(Call* expr, ConvertReceiverMode mode) { |
| // 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)); |
| } |
| |
| PrepareForBailoutForId(expr->CallId(), NO_REGISTERS); |
| // Record source position of the IC call. |
| SetCallPosition(expr); |
| Handle<Code> ic = CodeFactory::CallIC(isolate(), arg_count, mode).code(); |
| __ li(a3, Operand(SmiFromSlot(expr->CallFeedbackICSlot()))); |
| __ lw(a1, 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. |
| __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| context()->DropAndPlug(1, v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitResolvePossiblyDirectEval(int arg_count) { |
| // t3: copy of the first argument or undefined if it doesn't exist. |
| if (arg_count > 0) { |
| __ lw(t3, MemOperand(sp, arg_count * kPointerSize)); |
| } else { |
| __ LoadRoot(t3, Heap::kUndefinedValueRootIndex); |
| } |
| |
| // t2: the receiver of the enclosing function. |
| __ lw(t2, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| |
| // t1: the language mode. |
| __ li(t1, Operand(Smi::FromInt(language_mode()))); |
| |
| // t0: the start position of the scope the calls resides in. |
| __ li(t0, Operand(Smi::FromInt(scope()->start_position()))); |
| |
| // Do the runtime call. |
| __ Push(t3, t2, t1, t0); |
| __ CallRuntime(Runtime::kResolvePossiblyDirectEval); |
| } |
| |
| |
| // 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 v0) |
| // and the object holding it (returned in v1). |
| DCHECK(!context_register().is(a2)); |
| __ li(a2, Operand(callee->name())); |
| __ Push(context_register(), a2); |
| __ CallRuntime(Runtime::kLoadLookupSlot); |
| __ Push(v0, v1); // 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; |
| __ Branch(&call); |
| __ bind(&done); |
| // Push function. |
| __ push(v0); |
| // The receiver is implicitly the global receiver. Indicate this |
| // by passing the hole to the call function stub. |
| __ LoadRoot(a1, Heap::kUndefinedValueRootIndex); |
| __ push(a1); |
| __ bind(&call); |
| } |
| } else { |
| VisitForStackValue(callee); |
| // refEnv.WithBaseObject() |
| __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); |
| __ push(a2); // Reserved receiver slot. |
| } |
| } |
| |
| |
| void FullCodeGenerator::EmitPossiblyEvalCall(Call* expr) { |
| // In a call to eval, we first call RuntimeHidden_ResolvePossiblyDirectEval |
| // to resolve the function we need to call. Then we call the resolved |
| // function using the given arguments. |
| ZoneList<Expression*>* args = expr->arguments(); |
| int arg_count = args->length(); |
| PushCalleeAndWithBaseObject(expr); |
| |
| // Push the arguments. |
| for (int i = 0; i < arg_count; i++) { |
| VisitForStackValue(args->at(i)); |
| } |
| |
| // Push a copy of the function (found below the arguments) and |
| // resolve eval. |
| __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize)); |
| __ push(a1); |
| EmitResolvePossiblyDirectEval(arg_count); |
| |
| // Touch up the stack with the resolved function. |
| __ sw(v0, MemOperand(sp, (arg_count + 1) * kPointerSize)); |
| |
| PrepareForBailoutForId(expr->EvalId(), NO_REGISTERS); |
| // Record source position for debugger. |
| SetCallPosition(expr); |
| __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize)); |
| __ li(a0, Operand(arg_count)); |
| __ Call(isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
| RecordJSReturnSite(expr); |
| // Restore context register. |
| __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| context()->DropAndPlug(1, v0); |
| } |
| |
| |
| 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.g |
| 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 a1 and a0. |
| __ li(a0, Operand(arg_count)); |
| __ lw(a1, MemOperand(sp, arg_count * kPointerSize)); |
| |
| // Record call targets in unoptimized code. |
| __ EmitLoadTypeFeedbackVector(a2); |
| __ li(a3, Operand(SmiFromSlot(expr->CallNewFeedbackSlot()))); |
| |
| CallConstructStub stub(isolate()); |
| __ Call(stub.GetCode(), RelocInfo::CODE_TARGET); |
| PrepareForBailoutForId(expr->ReturnId(), TOS_REG); |
| // Restore context register. |
| __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) { |
| SuperCallReference* super_call_ref = |
| expr->expression()->AsSuperCallReference(); |
| DCHECK_NOT_NULL(super_call_ref); |
| |
| // Push the super constructor target on the stack (may be null, |
| // but the Construct builtin can deal with that properly). |
| VisitForAccumulatorValue(super_call_ref->this_function_var()); |
| __ AssertFunction(result_register()); |
| __ lw(result_register(), |
| FieldMemOperand(result_register(), HeapObject::kMapOffset)); |
| __ lw(result_register(), |
| FieldMemOperand(result_register(), Map::kPrototypeOffset)); |
| __ 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 new target into a3. |
| VisitForAccumulatorValue(super_call_ref->new_target_var()); |
| __ mov(a3, result_register()); |
| |
| // Load function and argument count into a1 and a0. |
| __ li(a0, Operand(arg_count)); |
| __ lw(a1, MemOperand(sp, arg_count * kPointerSize)); |
| |
| __ Call(isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); |
| |
| RecordJSReturnSite(expr); |
| |
| // Restore context register. |
| __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| context()->Plug(v0); |
| } |
| |
| |
| 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(v0, t0); |
| Split(eq, t0, Operand(zero_reg), if_true, if_false, fall_through); |
| |
| context()->Plug(if_true, if_false); |
| } |
| |
| |
| void FullCodeGenerator::EmitIsJSReceiver(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(v0, if_false); |
| __ GetObjectType(v0, a1, a1); |
| PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| Split(ge, a1, Operand(FIRST_JS_RECEIVER_TYPE), |
| if_true, if_false, fall_through); |
| |
| context()->Plug(if_true, if_false); |
| } |
| |
| |
| void FullCodeGenerator::EmitIsSimdValue(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(v0, if_false); |
| __ GetObjectType(v0, a1, a1); |
| PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| Split(eq, a1, Operand(SIMD128_VALUE_TYPE), 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(v0, if_false); |
| __ GetObjectType(v0, a1, a2); |
| PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| __ Branch(if_true, hs, a2, Operand(FIRST_FUNCTION_TYPE)); |
| __ Branch(if_false); |
| |
| 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(v0, a1, Heap::kHeapNumberMapRootIndex, if_false, DO_SMI_CHECK); |
| __ lw(a2, FieldMemOperand(v0, HeapNumber::kExponentOffset)); |
| __ lw(a1, FieldMemOperand(v0, HeapNumber::kMantissaOffset)); |
| __ li(t0, 0x80000000); |
| Label not_nan; |
| __ Branch(¬_nan, ne, a2, Operand(t0)); |
| __ mov(t0, zero_reg); |
| __ mov(a2, a1); |
| __ bind(¬_nan); |
| |
| PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| Split(eq, a2, Operand(t0), 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(v0, if_false); |
| __ GetObjectType(v0, a1, a1); |
| PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| Split(eq, a1, Operand(JS_ARRAY_TYPE), |
| 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(v0, if_false); |
| __ GetObjectType(v0, a1, a1); |
| PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| Split(eq, a1, Operand(JS_TYPED_ARRAY_TYPE), 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(v0, if_false); |
| __ GetObjectType(v0, a1, a1); |
| PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| Split(eq, a1, Operand(JS_REGEXP_TYPE), 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(v0, if_false); |
| __ GetObjectType(v0, a1, a1); |
| PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| Split(eq, a1, Operand(JS_PROXY_TYPE), 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(a1); |
| PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| Split(eq, v0, Operand(a1), 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 a1 and the formal |
| // parameter count in a0. |
| VisitForAccumulatorValue(args->at(0)); |
| __ mov(a1, v0); |
| __ li(a0, Operand(Smi::FromInt(info_->scope()->num_parameters()))); |
| ArgumentsAccessStub stub(isolate(), ArgumentsAccessStub::READ_ELEMENT); |
| __ CallStub(&stub); |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitArgumentsLength(CallRuntime* expr) { |
| DCHECK(expr->arguments()->length() == 0); |
| Label exit; |
| // Get the number of formal parameters. |
| __ li(v0, Operand(Smi::FromInt(info_->scope()->num_parameters()))); |
| |
| // Check if the calling frame is an arguments adaptor frame. |
| __ lw(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| __ lw(a3, MemOperand(a2, StandardFrameConstants::kContextOffset)); |
| __ Branch(&exit, ne, a3, |
| Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| |
| // Arguments adaptor case: Read the arguments length from the |
| // adaptor frame. |
| __ lw(v0, MemOperand(a2, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| |
| __ bind(&exit); |
| context()->Plug(v0); |
| } |
| |
| |
| 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 not a JSReceiver, we return null. |
| __ JumpIfSmi(v0, &null); |
| STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); |
| __ GetObjectType(v0, v0, a1); // Map is now in v0. |
| __ Branch(&null, lt, a1, Operand(FIRST_JS_RECEIVER_TYPE)); |
| |
| // Return 'Function' for JSFunction objects. |
| __ Branch(&function, eq, a1, Operand(JS_FUNCTION_TYPE)); |
| |
| // Check if the constructor in the map is a JS function. |
| Register instance_type = a2; |
| __ GetMapConstructor(v0, v0, a1, instance_type); |
| __ Branch(&non_function_constructor, ne, instance_type, |
| Operand(JS_FUNCTION_TYPE)); |
| |
| // v0 now contains the constructor function. Grab the |
| // instance class name from there. |
| __ lw(v0, FieldMemOperand(v0, JSFunction::kSharedFunctionInfoOffset)); |
| __ lw(v0, FieldMemOperand(v0, SharedFunctionInfo::kInstanceClassNameOffset)); |
| __ Branch(&done); |
| |
| // Functions have class 'Function'. |
| __ bind(&function); |
| __ LoadRoot(v0, Heap::kFunction_stringRootIndex); |
| __ jmp(&done); |
| |
| // Objects with a non-function constructor have class 'Object'. |
| __ bind(&non_function_constructor); |
| __ LoadRoot(v0, Heap::kObject_stringRootIndex); |
| __ jmp(&done); |
| |
| // Non-JS objects have class null. |
| __ bind(&null); |
| __ LoadRoot(v0, Heap::kNullValueRootIndex); |
| |
| // All done. |
| __ bind(&done); |
| |
| context()->Plug(v0); |
| } |
| |
| |
| 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(v0, &done); |
| // If the object is not a value type, return the object. |
| __ GetObjectType(v0, a1, a1); |
| __ Branch(&done, ne, a1, Operand(JS_VALUE_TYPE)); |
| |
| __ lw(v0, FieldMemOperand(v0, JSValue::kValueOffset)); |
| |
| __ bind(&done); |
| context()->Plug(v0); |
| } |
| |
| |
| 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(v0, if_false); |
| __ GetObjectType(v0, a1, a1); |
| PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| Split(eq, a1, Operand(JS_DATE_TYPE), if_true, if_false, fall_through); |
| |
| context()->Plug(if_true, if_false); |
| } |
| |
| |
| void FullCodeGenerator::EmitOneByteSeqStringSetChar(CallRuntime* expr) { |
| ZoneList<Expression*>* args = expr->arguments(); |
| DCHECK_EQ(3, args->length()); |
| |
| Register string = v0; |
| Register index = a1; |
| Register value = a2; |
| |
| VisitForStackValue(args->at(0)); // index |
| VisitForStackValue(args->at(1)); // value |
| VisitForAccumulatorValue(args->at(2)); // string |
| __ Pop(index, value); |
| |
| if (FLAG_debug_code) { |
| __ SmiTst(value, at); |
| __ Check(eq, kNonSmiValue, at, Operand(zero_reg)); |
| __ SmiTst(index, at); |
| __ Check(eq, kNonSmiIndex, at, Operand(zero_reg)); |
| __ SmiUntag(index, index); |
| static const uint32_t one_byte_seq_type = kSeqStringTag | kOneByteStringTag; |
| Register scratch = t5; |
| __ EmitSeqStringSetCharCheck( |
| string, index, value, scratch, one_byte_seq_type); |
| __ SmiTag(index, index); |
| } |
| |
| __ SmiUntag(value, value); |
| __ Addu(at, |
| string, |
| Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
| __ SmiUntag(index); |
| __ Addu(at, at, index); |
| __ sb(value, MemOperand(at)); |
| context()->Plug(string); |
| } |
| |
| |
| void FullCodeGenerator::EmitTwoByteSeqStringSetChar(CallRuntime* expr) { |
| ZoneList<Expression*>* args = expr->arguments(); |
| DCHECK_EQ(3, args->length()); |
| |
| Register string = v0; |
| Register index = a1; |
| Register value = a2; |
| |
| VisitForStackValue(args->at(0)); // index |
| VisitForStackValue(args->at(1)); // value |
| VisitForAccumulatorValue(args->at(2)); // string |
| __ Pop(index, value); |
| |
| if (FLAG_debug_code) { |
| __ SmiTst(value, at); |
| __ Check(eq, kNonSmiValue, at, Operand(zero_reg)); |
| __ SmiTst(index, at); |
| __ Check(eq, kNonSmiIndex, at, Operand(zero_reg)); |
| __ SmiUntag(index, index); |
| static const uint32_t two_byte_seq_type = kSeqStringTag | kTwoByteStringTag; |
| Register scratch = t5; |
| __ EmitSeqStringSetCharCheck( |
| string, index, value, scratch, two_byte_seq_type); |
| __ SmiTag(index, index); |
| } |
| |
| __ SmiUntag(value, value); |
| __ Addu(at, |
| string, |
| Operand(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); |
| __ Addu(at, at, index); |
| STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0); |
| __ sh(value, MemOperand(at)); |
| 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(a1); // v0 = value. a1 = object. |
| |
| Label done; |
| // If the object is a smi, return the value. |
| __ JumpIfSmi(a1, &done); |
| |
| // If the object is not a value type, return the value. |
| __ GetObjectType(a1, a2, a2); |
| __ Branch(&done, ne, a2, Operand(JS_VALUE_TYPE)); |
| |
| // Store the value. |
| __ sw(v0, FieldMemOperand(a1, JSValue::kValueOffset)); |
| // Update the write barrier. Save the value as it will be |
| // overwritten by the write barrier code and is needed afterward. |
| __ mov(a2, v0); |
| __ RecordWriteField( |
| a1, JSValue::kValueOffset, a2, a3, kRAHasBeenSaved, kDontSaveFPRegs); |
| |
| __ bind(&done); |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitToInteger(CallRuntime* expr) { |
| ZoneList<Expression*>* args = expr->arguments(); |
| DCHECK_EQ(1, args->length()); |
| |
| // Load the argument into v0 and convert it. |
| VisitForAccumulatorValue(args->at(0)); |
| |
| // Convert the object to an integer. |
| Label done_convert; |
| __ JumpIfSmi(v0, &done_convert); |
| __ Push(v0); |
| __ CallRuntime(Runtime::kToInteger); |
| __ bind(&done_convert); |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitToName(CallRuntime* expr) { |
| ZoneList<Expression*>* args = expr->arguments(); |
| DCHECK_EQ(1, args->length()); |
| |
| // Load the argument into v0 and convert it. |
| VisitForAccumulatorValue(args->at(0)); |
| |
| Label convert, done_convert; |
| __ JumpIfSmi(v0, &convert); |
| STATIC_ASSERT(FIRST_NAME_TYPE == FIRST_TYPE); |
| __ GetObjectType(v0, a1, a1); |
| __ Branch(&done_convert, le, a1, Operand(LAST_NAME_TYPE)); |
| __ bind(&convert); |
| __ Push(v0); |
| __ CallRuntime(Runtime::kToName); |
| __ bind(&done_convert); |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitStringCharFromCode(CallRuntime* expr) { |
| ZoneList<Expression*>* args = expr->arguments(); |
| DCHECK(args->length() == 1); |
| |
| VisitForAccumulatorValue(args->at(0)); |
| |
| Label done; |
| StringCharFromCodeGenerator generator(v0, a1); |
| generator.GenerateFast(masm_); |
| __ jmp(&done); |
| |
| NopRuntimeCallHelper call_helper; |
| generator.GenerateSlow(masm_, call_helper); |
| |
| __ bind(&done); |
| context()->Plug(a1); |
| } |
| |
| |
| void FullCodeGenerator::EmitStringCharCodeAt(CallRuntime* expr) { |
| ZoneList<Expression*>* args = expr->arguments(); |
| DCHECK(args->length() == 2); |
| |
| VisitForStackValue(args->at(0)); |
| VisitForAccumulatorValue(args->at(1)); |
| __ mov(a0, result_register()); |
| |
| Register object = a1; |
| Register index = a0; |
| Register result = v0; |
| |
| __ 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)); |
| __ mov(a0, result_register()); |
| |
| Register object = a1; |
| Register index = a0; |
| Register scratch = a3; |
| Register result = v0; |
| |
| __ 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. |
| __ li(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::EmitCall(CallRuntime* expr) { |
| ZoneList<Expression*>* args = expr->arguments(); |
| DCHECK_LE(2, args->length()); |
| // Push target, receiver and arguments onto the stack. |
| for (Expression* const arg : *args) { |
| VisitForStackValue(arg); |
| } |
| PrepareForBailoutForId(expr->CallId(), NO_REGISTERS); |
| // Move target to a1. |
| int const argc = args->length() - 2; |
| __ lw(a1, MemOperand(sp, (argc + 1) * kPointerSize)); |
| // Call the target. |
| __ li(a0, Operand(argc)); |
| __ Call(isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
| // Restore context register. |
| __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| // Discard the function left on TOS. |
| context()->DropAndPlug(1, v0); |
| } |
| |
| |
| 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); |
| |
| __ lw(a0, FieldMemOperand(v0, String::kHashFieldOffset)); |
| __ And(a0, a0, Operand(String::kContainsCachedArrayIndexMask)); |
| |
| PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| Split(eq, a0, Operand(zero_reg), 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(v0); |
| |
| __ lw(v0, FieldMemOperand(v0, String::kHashFieldOffset)); |
| __ IndexFromHash(v0, v0); |
| |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitGetSuperConstructor(CallRuntime* expr) { |
| ZoneList<Expression*>* args = expr->arguments(); |
| DCHECK_EQ(1, args->length()); |
| VisitForAccumulatorValue(args->at(0)); |
| __ AssertFunction(v0); |
| __ lw(v0, FieldMemOperand(v0, HeapObject::kMapOffset)); |
| __ lw(v0, FieldMemOperand(v0, Map::kPrototypeOffset)); |
| context()->Plug(v0); |
| } |
| |
| |
| 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 = v0; |
| Register elements = no_reg; // Will be v0. |
| Register result = no_reg; // Will be v0. |
| Register separator = a1; |
| Register array_length = a2; |
| Register result_pos = no_reg; // Will be a2. |
| Register string_length = a3; |
| Register string = t0; |
| Register element = t1; |
| Register elements_end = t2; |
| Register scratch1 = t3; |
| Register scratch2 = t5; |
| Register scratch3 = t4; |
| |
| // Separator operand is on the stack. |
| __ pop(separator); |
| |
| // Check that the array is a JSArray. |
| __ JumpIfSmi(array, &bailout); |
| __ GetObjectType(array, scratch1, scratch2); |
| __ Branch(&bailout, ne, scratch2, Operand(JS_ARRAY_TYPE)); |
| |
| // Check that the array has fast elements. |
| __ CheckFastElements(scratch1, scratch2, &bailout); |
| |
| // If the array has length zero, return the empty string. |
| __ lw(array_length, FieldMemOperand(array, JSArray::kLengthOffset)); |
| __ SmiUntag(array_length); |
| __ Branch(&non_trivial_array, ne, array_length, Operand(zero_reg)); |
| __ LoadRoot(v0, Heap::kempty_stringRootIndex); |
| __ Branch(&done); |
| |
| __ bind(&non_trivial_array); |
| |
| // Get the FixedArray containing array's elements. |
| elements = array; |
| __ lw(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, zero_reg); |
| __ Addu(element, |
| elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| __ sll(elements_end, array_length, kPointerSizeLog2); |
| __ Addu(elements_end, element, elements_end); |
| // 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_) { |
| __ Assert(gt, kNoEmptyArraysHereInEmitFastOneByteArrayJoin, array_length, |
| Operand(zero_reg)); |
| } |
| __ bind(&loop); |
| __ lw(string, MemOperand(element)); |
| __ Addu(element, element, kPointerSize); |
| __ JumpIfSmi(string, &bailout); |
| __ lw(scratch1, FieldMemOperand(string, HeapObject::kMapOffset)); |
| __ lbu(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); |
| __ JumpIfInstanceTypeIsNotSequentialOneByte(scratch1, scratch2, &bailout); |
| __ lw(scratch1, FieldMemOperand(string, SeqOneByteString::kLengthOffset)); |
| __ AddBranchOvf(string_length, string_length, Operand(scratch1), &bailout); |
| __ Branch(&loop, lt, element, Operand(elements_end)); |
| |
| // If array_length is 1, return elements[0], a string. |
| __ Branch(¬_size_one_array, ne, array_length, Operand(1)); |
| __ lw(v0, FieldMemOperand(elements, FixedArray::kHeaderSize)); |
| __ Branch(&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); |
| __ lw(scratch1, FieldMemOperand(separator, HeapObject::kMapOffset)); |
| __ lbu(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); |
| __ JumpIfInstanceTypeIsNotSequentialOneByte(scratch1, scratch2, &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. |
| __ lw(scratch1, FieldMemOperand(separator, SeqOneByteString::kLengthOffset)); |
| __ Subu(string_length, string_length, Operand(scratch1)); |
| __ Mul(scratch3, scratch2, array_length, scratch1); |
| // Check for smi overflow. No overflow if higher 33 bits of 64-bit result are |
| // zero. |
| __ Branch(&bailout, ne, scratch3, Operand(zero_reg)); |
| __ And(scratch3, scratch2, Operand(0x80000000)); |
| __ Branch(&bailout, ne, scratch3, Operand(zero_reg)); |
| __ AddBranchOvf(string_length, string_length, Operand(scratch2), &bailout); |
| __ SmiUntag(string_length); |
| |
| // Bailout for large object allocations. |
| __ Branch(&bailout, gt, string_length, |
| Operand(Page::kMaxRegularHeapObjectSize)); |
| |
| // Get first element in the array to free up the elements register to be used |
| // for the result. |
| __ Addu(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, scratch1, scratch2, |
| elements_end, &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. |
| __ sll(elements_end, array_length, kPointerSizeLog2); |
| __ Addu(elements_end, element, elements_end); |
| result_pos = array_length; // End of live range for array_length. |
| array_length = no_reg; |
| __ Addu(result_pos, |
| result, |
| Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
| |
| // Check the length of the separator. |
| __ lw(scratch1, FieldMemOperand(separator, SeqOneByteString::kLengthOffset)); |
| __ li(at, Operand(Smi::FromInt(1))); |
| __ Branch(&one_char_separator, eq, scratch1, Operand(at)); |
| __ Branch(&long_separator, gt, scratch1, Operand(at)); |
| |
| // 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. |
| __ lw(string, MemOperand(element)); |
| __ Addu(element, element, kPointerSize); |
| __ lw(string_length, FieldMemOperand(string, String::kLengthOffset)); |
| __ SmiUntag(string_length); |
| __ Addu(string, string, SeqOneByteString::kHeaderSize - kHeapObjectTag); |
| __ CopyBytes(string, result_pos, string_length, scratch1); |
| // End while (element < elements_end). |
| __ Branch(&empty_separator_loop, lt, element, Operand(elements_end)); |
| DCHECK(result.is(v0)); |
| __ Branch(&done); |
| |
| // One-character separator case. |
| __ bind(&one_char_separator); |
| // Replace separator with its one-byte character value. |
| __ lbu(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. |
| __ sb(separator, MemOperand(result_pos)); |
| __ Addu(result_pos, result_pos, 1); |
| |
| // Copy next array element to the result. |
| __ bind(&one_char_separator_loop_entry); |
| __ lw(string, MemOperand(element)); |
| __ Addu(element, element, kPointerSize); |
| __ lw(string_length, FieldMemOperand(string, String::kLengthOffset)); |
| __ SmiUntag(string_length); |
| __ Addu(string, string, SeqOneByteString::kHeaderSize - kHeapObjectTag); |
| __ CopyBytes(string, result_pos, string_length, scratch1); |
| // End while (element < elements_end). |
| __ Branch(&one_char_separator_loop, lt, element, Operand(elements_end)); |
| DCHECK(result.is(v0)); |
| __ Branch(&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. |
| __ lw(string_length, FieldMemOperand(separator, String::kLengthOffset)); |
| __ SmiUntag(string_length); |
| __ Addu(string, |
| separator, |
| Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
| __ CopyBytes(string, result_pos, string_length, scratch1); |
| |
| __ bind(&long_separator); |
| __ lw(string, MemOperand(element)); |
| __ Addu(element, element, kPointerSize); |
| __ lw(string_length, FieldMemOperand(string, String::kLengthOffset)); |
| __ SmiUntag(string_length); |
| __ Addu(string, string, SeqOneByteString::kHeaderSize - kHeapObjectTag); |
| __ CopyBytes(string, result_pos, string_length, scratch1); |
| // End while (element < elements_end). |
| __ Branch(&long_separator_loop, lt, element, Operand(elements_end)); |
| DCHECK(result.is(v0)); |
| __ Branch(&done); |
| |
| __ bind(&bailout); |
| __ LoadRoot(v0, Heap::kUndefinedValueRootIndex); |
| __ bind(&done); |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitDebugIsActive(CallRuntime* expr) { |
| DCHECK(expr->arguments()->length() == 0); |
| ExternalReference debug_is_active = |
| ExternalReference::debug_is_active_address(isolate()); |
| __ li(at, Operand(debug_is_active)); |
| __ lb(v0, MemOperand(at)); |
| __ SmiTag(v0); |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitCreateIterResultObject(CallRuntime* expr) { |
| ZoneList<Expression*>* args = expr->arguments(); |
| DCHECK_EQ(2, args->length()); |
| VisitForStackValue(args->at(0)); |
| VisitForStackValue(args->at(1)); |
| |
| Label runtime, done; |
| |
| __ Allocate(JSIteratorResult::kSize, v0, a2, a3, &runtime, TAG_OBJECT); |
| __ LoadNativeContextSlot(Context::ITERATOR_RESULT_MAP_INDEX, a1); |
| __ Pop(a2, a3); |
| __ LoadRoot(t0, Heap::kEmptyFixedArrayRootIndex); |
| __ sw(a1, FieldMemOperand(v0, HeapObject::kMapOffset)); |
| __ sw(t0, FieldMemOperand(v0, JSObject::kPropertiesOffset)); |
| __ sw(t0, FieldMemOperand(v0, JSObject::kElementsOffset)); |
| __ sw(a2, FieldMemOperand(v0, JSIteratorResult::kValueOffset)); |
| __ sw(a3, FieldMemOperand(v0, JSIteratorResult::kDoneOffset)); |
| STATIC_ASSERT(JSIteratorResult::kSize == 5 * kPointerSize); |
| __ jmp(&done); |
| |
| __ bind(&runtime); |
| __ CallRuntime(Runtime::kCreateIterResultObject); |
| |
| __ bind(&done); |
| context()->Plug(v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitLoadJSRuntimeFunction(CallRuntime* expr) { |
| // Push undefined as the receiver. |
| __ LoadRoot(v0, Heap::kUndefinedValueRootIndex); |
| __ push(v0); |
| |
| __ LoadNativeContextSlot(expr->context_index(), v0); |
| } |
| |
| |
| void FullCodeGenerator::EmitCallJSRuntimeFunction(CallRuntime* expr) { |
| ZoneList<Expression*>* args = expr->arguments(); |
| int arg_count = args->length(); |
| |
| SetCallPosition(expr); |
| __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize)); |
| __ li(a0, Operand(arg_count)); |
| __ Call(isolate()->builtins()->Call(ConvertReceiverMode::kNullOrUndefined), |
| RelocInfo::CODE_TARGET); |
| } |
| |
| |
| 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. |
| __ lw(at, MemOperand(sp, 0)); |
| __ push(at); |
| __ sw(v0, 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. |
| __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| |
| context()->DropAndPlug(1, v0); |
| |
| } 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(v0); |
| } |
| } |
| } |
| } |
| |
| |
| 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()); |
| __ CallRuntime(is_strict(language_mode()) |
| ? Runtime::kDeleteProperty_Strict |
| : Runtime::kDeleteProperty_Sloppy); |
| context()->Plug(v0); |
| } 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()) { |
| __ LoadGlobalObject(a2); |
| __ li(a1, Operand(var->name())); |
| __ Push(a2, a1); |
| __ CallRuntime(Runtime::kDeleteProperty_Sloppy); |
| context()->Plug(v0); |
| } 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(a2)); |
| __ li(a2, Operand(var->name())); |
| __ Push(context_register(), a2); |
| __ CallRuntime(Runtime::kDeleteLookupSlot); |
| context()->Plug(v0); |
| } |
| } 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(v0, Heap::kTrueValueRootIndex); |
| if (context()->IsStackValue()) __ push(v0); |
| __ jmp(&done); |
| __ bind(&materialize_false); |
| PrepareForBailoutForId(expr->MaterializeFalseId(), NO_REGISTERS); |
| __ LoadRoot(v0, Heap::kFalseValueRootIndex); |
| if (context()->IsStackValue()) __ push(v0); |
| __ bind(&done); |
| } |
| break; |
| } |
| |
| case Token::TYPEOF: { |
| Comment cmnt(masm_, "[ UnaryOperation (TYPEOF)"); |
| { |
| AccumulatorValueContext context(this); |
| VisitForTypeofValue(expr->expression()); |
| } |
| __ mov(a3, v0); |
| TypeofStub typeof_stub(isolate()); |
| __ CallStub(&typeof_stub); |
| context()->Plug(v0); |
| 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()) { |
| __ li(at, Operand(Smi::FromInt(0))); |
| __ push(at); |
| } |
| switch (assign_type) { |
| case NAMED_PROPERTY: { |
| // Put the object both on the stack and in the register. |
| VisitForStackValue(prop->obj()); |
| __ lw(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 = a1; |
| __ lw(scratch, MemOperand(sp, kPointerSize)); |
| __ Push(scratch, result_register()); |
| EmitNamedSuperPropertyLoad(prop); |
| break; |
| } |
| |
| case KEYED_SUPER_PROPERTY: { |
| VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
| VisitForAccumulatorValue( |
| prop->obj()->AsSuperPropertyReference()->home_object()); |
| const Register scratch = a1; |
| const Register scratch1 = t0; |
| __ Move(scratch, result_register()); |
| VisitForAccumulatorValue(prop->key()); |
| __ Push(scratch, result_register()); |
| __ lw(scratch1, MemOperand(sp, 2 * kPointerSize)); |
| __ Push(scratch1, scratch, result_register()); |
| EmitKeyedSuperPropertyLoad(prop); |
| break; |
| } |
| |
| case KEYED_PROPERTY: { |
| VisitForStackValue(prop->obj()); |
| VisitForStackValue(prop->key()); |
| __ lw(LoadDescriptor::ReceiverRegister(), |
| MemOperand(sp, 1 * kPointerSize)); |
| __ lw(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; |
| __ mov(a0, v0); |
| if (ShouldInlineSmiCase(expr->op())) { |
| Label slow; |
| patch_site.EmitJumpIfNotSmi(v0, &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(v0); |
| break; |
| case NAMED_PROPERTY: |
| __ sw(v0, MemOperand(sp, kPointerSize)); |
| break; |
| case NAMED_SUPER_PROPERTY: |
| __ sw(v0, MemOperand(sp, 2 * kPointerSize)); |
| break; |
| case KEYED_PROPERTY: |
| __ sw(v0, MemOperand(sp, 2 * kPointerSize)); |
| break; |
| case KEYED_SUPER_PROPERTY: |
| __ sw(v0, MemOperand(sp, 3 * kPointerSize)); |
| break; |
| } |
| } |
| } |
| |
| Register scratch1 = a1; |
| __ li(scratch1, Operand(Smi::FromInt(count_value))); |
| __ AddBranchNoOvf(v0, v0, Operand(scratch1), &done); |
| // Call stub. Undo operation first. |
| __ Move(v0, a0); |
| __ 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(v0); |
| break; |
| case NAMED_PROPERTY: |
| __ sw(v0, MemOperand(sp, kPointerSize)); |
| break; |
| case NAMED_SUPER_PROPERTY: |
| __ sw(v0, MemOperand(sp, 2 * kPointerSize)); |
| break; |
| case KEYED_PROPERTY: |
| __ sw(v0, MemOperand(sp, 2 * kPointerSize)); |
| break; |
| case KEYED_SUPER_PROPERTY: |
| __ sw(v0, MemOperand(sp, 3 * kPointerSize)); |
| break; |
| } |
| } |
| } |
| |
| __ bind(&stub_call); |
| __ mov(a1, v0); |
| __ li(a0, 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 v0. |
| 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(v0); |
| } |
| // 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(v0); |
| } |
| break; |
| case NAMED_PROPERTY: { |
| __ mov(StoreDescriptor::ValueRegister(), result_register()); |
| __ li(StoreDescriptor::NameRegister(), |
| Operand(prop->key()->AsLiteral()->value())); |
| __ pop(StoreDescriptor::ReceiverRegister()); |
| EmitLoadStoreICSlot(expr->CountSlot()); |
| CallStoreIC(); |
| PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
| if (expr->is_postfix()) { |
| if (!context()->IsEffect()) { |
| context()->PlugTOS(); |
| } |
| } else { |
| context()->Plug(v0); |
| } |
| break; |
| } |
| case NAMED_SUPER_PROPERTY: { |
| EmitNamedSuperPropertyStore(prop); |
| if (expr->is_postfix()) { |
| if (!context()->IsEffect()) { |
| context()->PlugTOS(); |
| } |
| } else { |
| context()->Plug(v0); |
| } |
| break; |
| } |
| case KEYED_SUPER_PROPERTY: { |
| EmitKeyedSuperPropertyStore(prop); |
| if (expr->is_postfix()) { |
| if (!context()->IsEffect()) { |
| context()->PlugTOS(); |
| } |
| } else { |
| context()->Plug(v0); |
| } |
| break; |
| } |
| case KEYED_PROPERTY: { |
| __ mov(StoreDescriptor::ValueRegister(), result_register()); |
| __ Pop(StoreDescriptor::ReceiverRegister(), |
| StoreDescriptor::NameRegister()); |
| Handle<Code> ic = |
| CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
| EmitLoadStoreICSlot(expr->CountSlot()); |
| CallIC(ic); |
| PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
| if (expr->is_postfix()) { |
| if (!context()->IsEffect()) { |
| context()->PlugTOS(); |
| } |
| } else { |
| context()->Plug(v0); |
| } |
| 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(v0, if_true); |
| __ lw(v0, FieldMemOperand(v0, HeapObject::kMapOffset)); |
| __ LoadRoot(at, Heap::kHeapNumberMapRootIndex); |
| Split(eq, v0, Operand(at), if_true, if_false, fall_through); |
| } else if (String::Equals(check, factory->string_string())) { |
| __ JumpIfSmi(v0, if_false); |
| __ GetObjectType(v0, v0, a1); |
| Split(lt, a1, Operand(FIRST_NONSTRING_TYPE), if_true, if_false, |
| fall_through); |
| } else if (String::Equals(check, factory->symbol_string())) { |
| __ JumpIfSmi(v0, if_false); |
| __ GetObjectType(v0, v0, a1); |
| Split(eq, a1, Operand(SYMBOL_TYPE), if_true, if_false, fall_through); |
| } else if (String::Equals(check, factory->boolean_string())) { |
| __ LoadRoot(at, Heap::kTrueValueRootIndex); |
| __ Branch(if_true, eq, v0, Operand(at)); |
| __ LoadRoot(at, Heap::kFalseValueRootIndex); |
| Split(eq, v0, Operand(at), if_true, if_false, fall_through); |
| } else if (String::Equals(check, factory->undefined_string())) { |
| __ LoadRoot(at, Heap::kUndefinedValueRootIndex); |
| __ Branch(if_true, eq, v0, Operand(at)); |
| __ JumpIfSmi(v0, if_false); |
| // Check for undetectable objects => true. |
| __ lw(v0, FieldMemOperand(v0, HeapObject::kMapOffset)); |
| __ lbu(a1, FieldMemOperand(v0, Map::kBitFieldOffset)); |
| __ And(a1, a1, Operand(1 << Map::kIsUndetectable)); |
| Split(ne, a1, Operand(zero_reg), if_true, if_false, fall_through); |
| } else if (String::Equals(check, factory->function_string())) { |
| __ JumpIfSmi(v0, if_false); |
| __ lw(v0, FieldMemOperand(v0, HeapObject::kMapOffset)); |
| __ lbu(a1, FieldMemOperand(v0, Map::kBitFieldOffset)); |
| __ And(a1, a1, |
| Operand((1 << Map::kIsCallable) | (1 << Map::kIsUndetectable))); |
| Split(eq, a1, Operand(1 << Map::kIsCallable), if_true, if_false, |
| fall_through); |
| } else if (String::Equals(check, factory->object_string())) { |
| __ JumpIfSmi(v0, if_false); |
| __ LoadRoot(at, Heap::kNullValueRootIndex); |
| __ Branch(if_true, eq, v0, Operand(at)); |
| STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); |
| __ GetObjectType(v0, v0, a1); |
| __ Branch(if_false, lt, a1, Operand(FIRST_JS_RECEIVER_TYPE)); |
| // Check for callable or undetectable objects => false. |
| __ lbu(a1, FieldMemOperand(v0, Map::kBitFieldOffset)); |
| __ And(a1, a1, |
| Operand((1 << Map::kIsCallable) | (1 << Map::kIsUndetectable))); |
| Split(eq, a1, Operand(zero_reg), if_true, if_false, fall_through); |
| // clang-format off |
| #define SIMD128_TYPE(TYPE, Type, type, lane_count, lane_type) \ |
| } else if (String::Equals(check, factory->type##_string())) { \ |
| __ JumpIfSmi(v0, if_false); \ |
| __ lw(v0, FieldMemOperand(v0, HeapObject::kMapOffset)); \ |
| __ LoadRoot(at, Heap::k##Type##MapRootIndex); \ |
| Split(eq, v0, Operand(at), if_true, if_false, fall_through); |
| SIMD128_TYPES(SIMD128_TYPE) |
| #undef SIMD128_TYPE |
| // clang-format on |
| } 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()); |
| __ CallRuntime(Runtime::kHasProperty); |
| PrepareForBailoutBeforeSplit(expr, false, NULL, NULL); |
| __ LoadRoot(t0, Heap::kTrueValueRootIndex); |
| Split(eq, v0, Operand(t0), if_true, if_false, fall_through); |
| break; |
| |
| case Token::INSTANCEOF: { |
| VisitForAccumulatorValue(expr->right()); |
| __ mov(a0, result_register()); |
| __ pop(a1); |
| InstanceOfStub stub(isolate()); |
| __ CallStub(&stub); |
| PrepareForBailoutBeforeSplit(expr, false, NULL, NULL); |
| __ LoadRoot(at, Heap::kTrueValueRootIndex); |
| Split(eq, v0, Operand(at), if_true, if_false, fall_through); |
| break; |
| } |
| |
| default: { |
| VisitForAccumulatorValue(expr->right()); |
| Condition cc = CompareIC::ComputeCondition(op); |
| __ mov(a0, result_register()); |
| __ pop(a1); |
| |
| bool inline_smi_code = ShouldInlineSmiCase(op); |
| JumpPatchSite patch_site(masm_); |
| if (inline_smi_code) { |
| Label slow_case; |
| __ Or(a2, a0, Operand(a1)); |
| patch_site.EmitJumpIfNotSmi(a2, &slow_case); |
| Split(cc, a1, Operand(a0), 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); |
| Split(cc, v0, Operand(zero_reg), 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); |
| __ mov(a0, result_register()); |
| if (expr->op() == Token::EQ_STRICT) { |
| Heap::RootListIndex nil_value = nil == kNullValue ? |
| Heap::kNullValueRootIndex : |
| Heap::kUndefinedValueRootIndex; |
| __ LoadRoot(a1, nil_value); |
| Split(eq, a0, Operand(a1), if_true, if_false, fall_through); |
| } else { |
| Handle<Code> ic = CompareNilICStub::GetUninitialized(isolate(), nil); |
| CallIC(ic, expr->CompareOperationFeedbackId()); |
| __ LoadRoot(a1, Heap::kTrueValueRootIndex); |
| Split(eq, v0, Operand(a1), if_true, if_false, fall_through); |
| } |
| context()->Plug(if_true, if_false); |
| } |
| |
| |
| void FullCodeGenerator::VisitThisFunction(ThisFunction* expr) { |
| __ lw(v0, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| context()->Plug(v0); |
| } |
| |
| |
| Register FullCodeGenerator::result_register() { |
| return v0; |
| } |
| |
| |
| Register FullCodeGenerator::context_register() { |
| return cp; |
| } |
| |
| |
| void FullCodeGenerator::StoreToFrameField(int frame_offset, Register value) { |
| DCHECK_EQ(POINTER_SIZE_ALIGN(frame_offset), frame_offset); |
| __ sw(value, MemOperand(fp, frame_offset)); |
| } |
| |
| |
| void FullCodeGenerator::LoadContextField(Register dst, int context_index) { |
| __ lw(dst, ContextMemOperand(cp, context_index)); |
| } |
| |
| |
| void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { |
| Scope* closure_scope = scope()->ClosureScope(); |
| if (closure_scope->is_script_scope() || |
| closure_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. |
| __ LoadNativeContextSlot(Context::CLOSURE_INDEX, at); |
| } else if (closure_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. |
| __ lw(at, ContextMemOperand(cp, Context::CLOSURE_INDEX)); |
| } else { |
| DCHECK(closure_scope->is_function_scope()); |
| __ lw(at, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| } |
| __ push(at); |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| // Non-local control flow support. |
| |
| void FullCodeGenerator::EnterFinallyBlock() { |
| DCHECK(!result_register().is(a1)); |
| // Store result register while executing finally block. |
| __ push(result_register()); |
| // Cook return address in link register to stack (smi encoded Code* delta). |
| __ Subu(a1, ra, Operand(masm_->CodeObject())); |
| DCHECK_EQ(1, kSmiTagSize + kSmiShiftSize); |
| STATIC_ASSERT(0 == kSmiTag); |
| __ Addu(a1, a1, Operand(a1)); // Convert to smi. |
| |
| // Store result register while executing finally block. |
| __ push(a1); |
| |
| // Store pending message while executing finally block. |
| ExternalReference pending_message_obj = |
| ExternalReference::address_of_pending_message_obj(isolate()); |
| __ li(at, Operand(pending_message_obj)); |
| __ lw(a1, MemOperand(at)); |
| __ push(a1); |
| |
| ClearPendingMessage(); |
| } |
| |
| |
| void FullCodeGenerator::ExitFinallyBlock() { |
| DCHECK(!result_register().is(a1)); |
| // Restore pending message from stack. |
| __ pop(a1); |
| ExternalReference pending_message_obj = |
| ExternalReference::address_of_pending_message_obj(isolate()); |
| __ li(at, Operand(pending_message_obj)); |
| __ sw(a1, MemOperand(at)); |
| |
| // Restore result register from stack. |
| __ pop(a1); |
| |
| // Uncook return address and return. |
| __ pop(result_register()); |
| DCHECK_EQ(1, kSmiTagSize + kSmiShiftSize); |
| __ sra(a1, a1, 1); // Un-smi-tag value. |
| __ Addu(at, a1, Operand(masm_->CodeObject())); |
| __ Jump(at); |
| } |
| |
| |
| void FullCodeGenerator::ClearPendingMessage() { |
| DCHECK(!result_register().is(a1)); |
| ExternalReference pending_message_obj = |
| ExternalReference::address_of_pending_message_obj(isolate()); |
| __ LoadRoot(a1, Heap::kTheHoleValueRootIndex); |
| __ li(at, Operand(pending_message_obj)); |
| __ sw(a1, MemOperand(at)); |
| } |
| |
| |
| void FullCodeGenerator::EmitLoadStoreICSlot(FeedbackVectorSlot slot) { |
| DCHECK(!slot.IsInvalid()); |
| __ li(VectorStoreICTrampolineDescriptor::SlotRegister(), |
| Operand(SmiFromSlot(slot))); |
| } |
| |
| |
| #undef __ |
| |
| |
| void BackEdgeTable::PatchAt(Code* unoptimized_code, |
| Address pc, |
| BackEdgeState target_state, |
| Code* replacement_code) { |
| static const int kInstrSize = Assembler::kInstrSize; |
| Address branch_address = pc - 6 * kInstrSize; |
| Isolate* isolate = unoptimized_code->GetIsolate(); |
| CodePatcher patcher(isolate, branch_address, 1); |
| |
| switch (target_state) { |
| case INTERRUPT: |
| // slt at, a3, zero_reg (in case of count based interrupts) |
| // beq at, zero_reg, ok |
| // lui t9, <interrupt stub address> upper |
| // ori t9, <interrupt stub address> lower |
| // jalr t9 |
| // nop |
| // ok-label ----- pc_after points here |
| patcher.masm()->slt(at, a3, zero_reg); |
| break; |
| case ON_STACK_REPLACEMENT: |
| case OSR_AFTER_STACK_CHECK: |
| // addiu at, zero_reg, 1 |
| // beq at, zero_reg, ok ;; Not changed |
| // lui t9, <on-stack replacement address> upper |
| // ori t9, <on-stack replacement address> lower |
| // jalr t9 ;; Not changed |
| // nop ;; Not changed |
| // ok-label ----- pc_after points here |
| patcher.masm()->addiu(at, zero_reg, 1); |
| break; |
| } |
| Address pc_immediate_load_address = pc - 4 * kInstrSize; |
| // Replace the stack check address in the load-immediate (lui/ori pair) |
| // with the entry address of the replacement code. |
| Assembler::set_target_address_at(isolate, pc_immediate_load_address, |
| 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) { |
| static const int kInstrSize = Assembler::kInstrSize; |
| Address branch_address = pc - 6 * kInstrSize; |
| Address pc_immediate_load_address = pc - 4 * kInstrSize; |
| |
| DCHECK(Assembler::IsBeq(Assembler::instr_at(pc - 5 * kInstrSize))); |
| if (!Assembler::IsAddImmediate(Assembler::instr_at(branch_address))) { |
| DCHECK(reinterpret_cast<uint32_t>( |
| Assembler::target_address_at(pc_immediate_load_address)) == |
| reinterpret_cast<uint32_t>( |
| isolate->builtins()->InterruptCheck()->entry())); |
| return INTERRUPT; |
| } |
| |
| DCHECK(Assembler::IsAddImmediate(Assembler::instr_at(branch_address))); |
| |
| if (reinterpret_cast<uint32_t>( |
| Assembler::target_address_at(pc_immediate_load_address)) == |
| reinterpret_cast<uint32_t>( |
| isolate->builtins()->OnStackReplacement()->entry())) { |
| return ON_STACK_REPLACEMENT; |
| } |
| |
| DCHECK(reinterpret_cast<uint32_t>( |
| Assembler::target_address_at(pc_immediate_load_address)) == |
| reinterpret_cast<uint32_t>( |
| isolate->builtins()->OsrAfterStackCheck()->entry())); |
| return OSR_AFTER_STACK_CHECK; |
| } |
| |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_TARGET_ARCH_MIPS |