Version 3.4.9.
Added support for debugger inspection of locals in optimized frames (issue 1140).
Fixed SConstruct to pass correct defines to samples/preparser when building with library=shared.
Made date parser handle ES5 Date Time Strings correctly (issue 1498).
Fixed a bug in Object.defineProperty on the arguments object.
Performance improvetments on all platforms.
git-svn-id: http://v8.googlecode.com/svn/trunk@8528 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index ea0b092..5b9bbb5 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -101,16 +101,18 @@
}
void EmitPatchInfo() {
- int delta_to_patch_site = masm_->InstructionsGeneratedSince(&patch_site_);
- Register reg = Register::from_code(delta_to_patch_site / kImm16Mask);
- __ andi(at, reg, delta_to_patch_site % kImm16Mask);
+ 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(at, reg, delta_to_patch_site % kImm16Mask);
#ifdef DEBUG
- info_emitted_ = true;
+ info_emitted_ = true;
#endif
+ } else {
+ __ nop(); // Signals no inlined code.
+ }
}
- bool is_bound() const { return patch_site_.is_bound(); }
-
private:
MacroAssembler* masm_;
Label patch_site_;
@@ -137,6 +139,7 @@
void FullCodeGenerator::Generate(CompilationInfo* info) {
ASSERT(info_ == NULL);
info_ = info;
+ scope_ = info->scope();
SetFunctionPosition(function());
Comment cmnt(masm_, "[ function compiled by full code generator");
@@ -154,13 +157,13 @@
if (info->is_strict_mode() || info->is_native()) {
Label ok;
__ Branch(&ok, eq, t1, Operand(zero_reg));
- int receiver_offset = scope()->num_parameters() * kPointerSize;
+ int receiver_offset = info->scope()->num_parameters() * kPointerSize;
__ LoadRoot(a2, Heap::kUndefinedValueRootIndex);
__ sw(a2, MemOperand(sp, receiver_offset));
__ bind(&ok);
}
- int locals_count = scope()->num_stack_slots();
+ int locals_count = info->scope()->num_stack_slots();
__ Push(ra, fp, cp, a1);
if (locals_count > 0) {
@@ -180,7 +183,7 @@
bool function_in_register = true;
// Possibly allocate a local context.
- int heap_slots = scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS;
+ int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS;
if (heap_slots > 0) {
Comment cmnt(masm_, "[ Allocate local context");
// Argument to NewContext is the function, which is in a1.
@@ -196,7 +199,7 @@
// passed to us. It's saved in the stack and kept live in cp.
__ sw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
// Copy any necessary parameters into the context.
- int num_parameters = scope()->num_parameters();
+ int num_parameters = info->scope()->num_parameters();
for (int i = 0; i < num_parameters; i++) {
Slot* slot = scope()->parameter(i)->AsSlot();
if (slot != NULL && slot->type() == Slot::CONTEXT) {
@@ -228,10 +231,11 @@
__ mov(a3, a1);
}
// Receiver is just before the parameters on the caller's stack.
- int offset = scope()->num_parameters() * kPointerSize;
+ int num_parameters = info->scope()->num_parameters();
+ int offset = num_parameters * kPointerSize;
__ Addu(a2, fp,
Operand(StandardFrameConstants::kCallerSPOffset + offset));
- __ li(a1, Operand(Smi::FromInt(scope()->num_parameters())));
+ __ li(a1, Operand(Smi::FromInt(num_parameters)));
__ Push(a3, a2, a1);
// Arguments to ArgumentsAccessStub:
@@ -348,7 +352,7 @@
{ 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 sp_delta = (scope()->num_parameters() + 1) * kPointerSize;
+ int32_t sp_delta = (info_->scope()->num_parameters() + 1) * kPointerSize;
CodeGenerator::RecordPositions(masm_, function()->end_position() - 1);
__ RecordJSReturn();
masm_->mov(sp, fp);
@@ -716,10 +720,14 @@
// context.
ASSERT_EQ(0, scope()->ContextChainLength(variable->scope()));
if (FLAG_debug_code) {
- // Check that we're not inside a 'with'.
- __ lw(a1, ContextOperand(cp, Context::FCONTEXT_INDEX));
- __ Check(eq, "Unexpected declaration in current context.",
- a1, Operand(cp));
+ // Check that we're not inside a with or catch context.
+ __ lw(a1, FieldMemOperand(cp, HeapObject::kMapOffset));
+ __ LoadRoot(t0, Heap::kWithContextMapRootIndex);
+ __ Check(ne, "Declaration in with context.",
+ a1, Operand(t0));
+ __ LoadRoot(t0, Heap::kCatchContextMapRootIndex);
+ __ Check(ne, "Declaration in catch context.",
+ a1, Operand(t0));
}
if (mode == Variable::CONST) {
__ LoadRoot(at, Heap::kTheHoleValueRootIndex);
@@ -790,7 +798,7 @@
Handle<Code> ic = is_strict_mode()
? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
: isolate()->builtins()->KeyedStoreIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+ __ CallWithAstId(ic);
// Value in v0 is ignored (declarations are statements).
}
}
@@ -865,7 +873,8 @@
// Record position before stub call for type feedback.
SetSourcePosition(clause->position());
Handle<Code> ic = CompareIC::GetUninitialized(Token::EQ_STRICT);
- EmitCallIC(ic, &patch_site, clause->CompareId());
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET, clause->CompareId());
+ patch_site.EmitPatchInfo();
__ Branch(&next_test, ne, v0, Operand(zero_reg));
__ Drop(1); // Switch value is no longer needed.
@@ -1164,7 +1173,7 @@
? RelocInfo::CODE_TARGET
: RelocInfo::CODE_TARGET_CONTEXT;
Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
- EmitCallIC(ic, mode, AstNode::kNoNumber);
+ __ CallWithAstId(ic, mode);
}
@@ -1244,7 +1253,7 @@
__ li(a0, Operand(key_literal->handle()));
Handle<Code> ic =
isolate()->builtins()->KeyedLoadIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(property));
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET, GetPropertyId(property));
__ Branch(done);
}
}
@@ -1266,7 +1275,7 @@
__ lw(a0, GlobalObjectOperand());
__ li(a2, Operand(var->name()));
Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT, AstNode::kNoNumber);
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET_CONTEXT);
context()->Plug(v0);
} else if (slot->type() == Slot::LOOKUP) {
@@ -1412,7 +1421,7 @@
Handle<Code> ic = is_strict_mode()
? isolate()->builtins()->StoreIC_Initialize_Strict()
: isolate()->builtins()->StoreIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET, key->id());
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET, key->id());
PrepareForBailoutForId(key->id(), NO_REGISTERS);
} else {
VisitForEffect(value);
@@ -1656,7 +1665,7 @@
__ li(a2, Operand(key->handle()));
// Call load IC. It has arguments receiver and property name a0 and a2.
Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
}
@@ -1665,7 +1674,7 @@
__ mov(a0, result_register());
// Call keyed load IC. It has arguments key and receiver in a0 and a1.
Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
}
@@ -1693,7 +1702,8 @@
__ bind(&stub_call);
BinaryOpStub stub(op, mode);
- EmitCallIC(stub.GetCode(), &patch_site, expr->id());
+ __ CallWithAstId(stub.GetCode(), RelocInfo::CODE_TARGET, expr->id());
+ patch_site.EmitPatchInfo();
__ jmp(&done);
__ bind(&smi_case);
@@ -1774,7 +1784,9 @@
__ mov(a0, result_register());
__ pop(a1);
BinaryOpStub stub(op, mode);
- EmitCallIC(stub.GetCode(), NULL, expr->id());
+ JumpPatchSite patch_site(masm_); // unbound, signals no inlined smi code.
+ __ CallWithAstId(stub.GetCode(), RelocInfo::CODE_TARGET, expr->id());
+ patch_site.EmitPatchInfo();
context()->Plug(v0);
}
@@ -1814,7 +1826,7 @@
Handle<Code> ic = is_strict_mode()
? isolate()->builtins()->StoreIC_Initialize_Strict()
: isolate()->builtins()->StoreIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+ __ CallWithAstId(ic);
break;
}
case KEYED_PROPERTY: {
@@ -1827,7 +1839,7 @@
Handle<Code> ic = is_strict_mode()
? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
: isolate()->builtins()->KeyedStoreIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+ __ CallWithAstId(ic);
break;
}
}
@@ -1852,7 +1864,7 @@
Handle<Code> ic = is_strict_mode()
? isolate()->builtins()->StoreIC_Initialize_Strict()
: isolate()->builtins()->StoreIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET_CONTEXT, AstNode::kNoNumber);
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET_CONTEXT);
} else if (op == Token::INIT_CONST) {
// Like var declarations, const declarations are hoisted to function
@@ -1873,17 +1885,7 @@
__ Branch(&skip, ne, a1, Operand(t0));
__ sw(result_register(), MemOperand(fp, SlotOffset(slot)));
break;
- case Slot::CONTEXT: {
- __ lw(a1, ContextOperand(cp, Context::FCONTEXT_INDEX));
- __ lw(a2, ContextOperand(a1, slot->index()));
- __ LoadRoot(t0, Heap::kTheHoleValueRootIndex);
- __ Branch(&skip, ne, a2, Operand(t0));
- __ sw(result_register(), ContextOperand(a1, slot->index()));
- int offset = Context::SlotOffset(slot->index());
- __ mov(a3, result_register()); // Preserve the stored value in v0.
- __ RecordWrite(a1, Operand(offset), a3, a2);
- break;
- }
+ case Slot::CONTEXT:
case Slot::LOOKUP:
__ push(result_register());
__ li(a0, Operand(slot->var()->name()));
@@ -1960,7 +1962,7 @@
Handle<Code> ic = is_strict_mode()
? isolate()->builtins()->StoreIC_Initialize_Strict()
: isolate()->builtins()->StoreIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET, expr->id());
// If the assignment ends an initialization block, revert to fast case.
if (expr->ends_initialization_block()) {
@@ -2012,7 +2014,7 @@
Handle<Code> ic = is_strict_mode()
? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
: isolate()->builtins()->KeyedStoreIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET, expr->id());
// If the assignment ends an initialization block, revert to fast case.
if (expr->ends_initialization_block()) {
@@ -2065,7 +2067,7 @@
InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP;
Handle<Code> ic =
isolate()->stub_cache()->ComputeCallInitialize(arg_count, in_loop, mode);
- EmitCallIC(ic, mode, expr->id());
+ __ CallWithAstId(ic, mode, expr->id());
RecordJSReturnSite(expr);
// Restore context register.
__ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
@@ -2099,7 +2101,7 @@
Handle<Code> ic =
isolate()->stub_cache()->ComputeKeyedCallInitialize(arg_count, in_loop);
__ lw(a2, MemOperand(sp, (arg_count + 1) * kPointerSize)); // Key.
- EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET, expr->id());
RecordJSReturnSite(expr);
// Restore context register.
__ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
@@ -2139,7 +2141,8 @@
__ push(a1);
// Push the receiver of the enclosing function and do runtime call.
- __ lw(a1, MemOperand(fp, (2 + scope()->num_parameters()) * kPointerSize));
+ int receiver_offset = 2 + info_->scope()->num_parameters();
+ __ lw(a1, MemOperand(fp, receiver_offset * kPointerSize));
__ push(a1);
// Push the strict mode flag.
__ li(a1, Operand(Smi::FromInt(strict_mode_flag())));
@@ -2280,7 +2283,7 @@
} else {
// Call to a keyed property.
// For a synthetic property use keyed load IC followed by function call,
- // for a regular property use keyed EmitCallIC.
+ // for a regular property use EmitKeyedCallWithIC.
if (prop->is_synthetic()) {
// Do not visit the object and key subexpressions (they are shared
// by all occurrences of the same rewritten parameter).
@@ -2298,7 +2301,7 @@
SetSourcePosition(prop->position());
Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET, GetPropertyId(prop));
__ lw(a1, GlobalObjectOperand());
__ lw(a1, FieldMemOperand(a1, GlobalObject::kGlobalReceiverOffset));
__ Push(v0, a1); // Function, receiver.
@@ -2685,7 +2688,7 @@
// parameter count in a0.
VisitForAccumulatorValue(args->at(0));
__ mov(a1, v0);
- __ li(a0, Operand(Smi::FromInt(scope()->num_parameters())));
+ __ li(a0, Operand(Smi::FromInt(info_->scope()->num_parameters())));
ArgumentsAccessStub stub(ArgumentsAccessStub::READ_ELEMENT);
__ CallStub(&stub);
context()->Plug(v0);
@@ -2697,7 +2700,7 @@
Label exit;
// Get the number of formal parameters.
- __ li(v0, Operand(Smi::FromInt(scope()->num_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));
@@ -3596,6 +3599,39 @@
}
+void FullCodeGenerator::EmitIsNativeOrStrictMode(ZoneList<Expression*>* args) {
+ ASSERT(args->length() == 1);
+
+ // Load the function into v0.
+ VisitForAccumulatorValue(args->at(0));
+
+ // Prepare for the test.
+ Label materialize_true, materialize_false;
+ Label* if_true = NULL;
+ Label* if_false = NULL;
+ Label* fall_through = NULL;
+ context()->PrepareTest(&materialize_true, &materialize_false,
+ &if_true, &if_false, &fall_through);
+
+ // Test for strict mode function.
+ __ lw(a1, FieldMemOperand(v0, JSFunction::kSharedFunctionInfoOffset));
+ __ lw(a1, FieldMemOperand(a1, SharedFunctionInfo::kCompilerHintsOffset));
+ __ And(at, a1, Operand(1 << (SharedFunctionInfo::kStrictModeFunction +
+ kSmiTagSize)));
+ __ Branch(if_true, ne, at, Operand(zero_reg));
+
+ // Test for native function.
+ __ And(at, a1, Operand(1 << (SharedFunctionInfo::kNative + kSmiTagSize)));
+ __ Branch(if_true, ne, at, Operand(zero_reg));
+
+ // Not native or strict-mode function.
+ __ Branch(if_false);
+
+ PrepareForBailoutBeforeSplit(TOS_REG, true, if_true, if_false);
+ context()->Plug(if_true, if_false);
+}
+
+
void FullCodeGenerator::VisitCallRuntime(CallRuntime* expr) {
Handle<String> name = expr->name();
if (name->length() > 0 && name->Get(0) == '_') {
@@ -3628,7 +3664,7 @@
isolate()->stub_cache()->ComputeCallInitialize(arg_count,
NOT_IN_LOOP,
mode);
- EmitCallIC(ic, mode, expr->id());
+ __ CallWithAstId(ic, mode, expr->id());
// Restore context register.
__ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
} else {
@@ -3771,7 +3807,7 @@
VisitForAccumulatorValue(expr->expression());
SetSourcePosition(expr->position());
__ mov(a0, result_register());
- EmitCallIC(stub.GetCode(), RelocInfo::CODE_TARGET, expr->id());
+ __ CallWithAstId(stub.GetCode(), RelocInfo::CODE_TARGET, expr->id());
context()->Plug(v0);
}
@@ -3882,7 +3918,8 @@
SetSourcePosition(expr->position());
BinaryOpStub stub(Token::ADD, NO_OVERWRITE);
- EmitCallIC(stub.GetCode(), &patch_site, expr->CountId());
+ __ CallWithAstId(stub.GetCode(), RelocInfo::CODE_TARGET, expr->CountId());
+ patch_site.EmitPatchInfo();
__ bind(&done);
// Store the value returned in v0.
@@ -3914,7 +3951,7 @@
Handle<Code> ic = is_strict_mode()
? isolate()->builtins()->StoreIC_Initialize_Strict()
: isolate()->builtins()->StoreIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET, expr->id());
PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
if (expr->is_postfix()) {
if (!context()->IsEffect()) {
@@ -3932,7 +3969,7 @@
Handle<Code> ic = is_strict_mode()
? isolate()->builtins()->KeyedStoreIC_Initialize_Strict()
: isolate()->builtins()->KeyedStoreIC_Initialize();
- EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id());
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET, expr->id());
PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
if (expr->is_postfix()) {
if (!context()->IsEffect()) {
@@ -3956,7 +3993,7 @@
Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize();
// Use a regular load, not a contextual load, to avoid a reference
// error.
- EmitCallIC(ic, RelocInfo::CODE_TARGET, AstNode::kNoNumber);
+ __ CallWithAstId(ic);
PrepareForBailout(expr, TOS_REG);
context()->Plug(v0);
} else if (proxy != NULL &&
@@ -4153,7 +4190,8 @@
// Record position and call the compare IC.
SetSourcePosition(expr->position());
Handle<Code> ic = CompareIC::GetUninitialized(op);
- EmitCallIC(ic, &patch_site, expr->id());
+ __ CallWithAstId(ic, RelocInfo::CODE_TARGET, expr->id());
+ patch_site.EmitPatchInfo();
PrepareForBailoutBeforeSplit(TOS_REG, true, if_true, if_false);
Split(cc, v0, Operand(zero_reg), if_true, if_false, fall_through);
}
@@ -4212,70 +4250,6 @@
}
-void FullCodeGenerator::EmitCallIC(Handle<Code> ic,
- RelocInfo::Mode mode,
- unsigned ast_id) {
- ASSERT(mode == RelocInfo::CODE_TARGET ||
- mode == RelocInfo::CODE_TARGET_CONTEXT);
- Counters* counters = isolate()->counters();
- switch (ic->kind()) {
- case Code::LOAD_IC:
- __ IncrementCounter(counters->named_load_full(), 1, a1, a2);
- break;
- case Code::KEYED_LOAD_IC:
- __ IncrementCounter(counters->keyed_load_full(), 1, a1, a2);
- break;
- case Code::STORE_IC:
- __ IncrementCounter(counters->named_store_full(), 1, a1, a2);
- break;
- case Code::KEYED_STORE_IC:
- __ IncrementCounter(counters->keyed_store_full(), 1, a1, a2);
- default:
- break;
- }
- if (ast_id == kNoASTId || mode == RelocInfo::CODE_TARGET_CONTEXT) {
- __ Call(ic, mode);
- } else {
- ASSERT(mode == RelocInfo::CODE_TARGET);
- mode = RelocInfo::CODE_TARGET_WITH_ID;
- __ CallWithAstId(ic, mode, ast_id);
- }
-}
-
-
-void FullCodeGenerator::EmitCallIC(Handle<Code> ic,
- JumpPatchSite* patch_site,
- unsigned ast_id) {
- Counters* counters = isolate()->counters();
- switch (ic->kind()) {
- case Code::LOAD_IC:
- __ IncrementCounter(counters->named_load_full(), 1, a1, a2);
- break;
- case Code::KEYED_LOAD_IC:
- __ IncrementCounter(counters->keyed_load_full(), 1, a1, a2);
- break;
- case Code::STORE_IC:
- __ IncrementCounter(counters->named_store_full(), 1, a1, a2);
- break;
- case Code::KEYED_STORE_IC:
- __ IncrementCounter(counters->keyed_store_full(), 1, a1, a2);
- default:
- break;
- }
-
- if (ast_id == kNoASTId) {
- __ Call(ic, RelocInfo::CODE_TARGET);
- } else {
- __ CallWithAstId(ic, RelocInfo::CODE_TARGET_WITH_ID, ast_id);
- }
- if (patch_site != NULL && patch_site->is_bound()) {
- patch_site->EmitPatchInfo();
- } else {
- __ nop(); // Signals no inlined code.
- }
-}
-
-
void FullCodeGenerator::StoreToFrameField(int frame_offset, Register value) {
ASSERT_EQ(POINTER_SIZE_ALIGN(frame_offset), frame_offset);
__ sw(value, MemOperand(fp, frame_offset));
@@ -4287,6 +4261,27 @@
}
+void FullCodeGenerator::PushFunctionArgumentForContextAllocation() {
+ Scope* declaration_scope = scope()->DeclarationScope();
+ if (declaration_scope->is_global_scope()) {
+ // Contexts nested in the global context have a canonical empty function
+ // as their closure, not the anonymous closure containing the global
+ // code. Pass a smi sentinel and let the runtime look up the empty
+ // function.
+ __ li(at, Operand(Smi::FromInt(0)));
+ } else if (declaration_scope->is_eval_scope()) {
+ // Contexts created by a call to eval have the same closure as the
+ // context calling eval, not the anonymous closure containing the eval
+ // code. Fetch it from the context.
+ __ lw(at, ContextOperand(cp, Context::CLOSURE_INDEX));
+ } else {
+ ASSERT(declaration_scope->is_function_scope());
+ __ lw(at, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
+ }
+ __ push(at);
+}
+
+
// ----------------------------------------------------------------------------
// Non-local control flow support.