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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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254 if (scope()->HasIllegalRedeclaration()) { | 254 if (scope()->HasIllegalRedeclaration()) { |
255 Comment cmnt(masm_, "[ Declarations"); | 255 Comment cmnt(masm_, "[ Declarations"); |
256 scope()->VisitIllegalRedeclaration(this); | 256 scope()->VisitIllegalRedeclaration(this); |
257 | 257 |
258 } else { | 258 } else { |
259 PrepareForBailoutForId(AstNode::kFunctionEntryId, NO_REGISTERS); | 259 PrepareForBailoutForId(AstNode::kFunctionEntryId, NO_REGISTERS); |
260 { Comment cmnt(masm_, "[ Declarations"); | 260 { Comment cmnt(masm_, "[ Declarations"); |
261 // For named function expressions, declare the function name as a | 261 // For named function expressions, declare the function name as a |
262 // constant. | 262 // constant. |
263 if (scope()->is_function_scope() && scope()->function() != NULL) { | 263 if (scope()->is_function_scope() && scope()->function() != NULL) { |
264 int ignored = 0; | |
265 VariableProxy* proxy = scope()->function(); | 264 VariableProxy* proxy = scope()->function(); |
266 ASSERT(proxy->var()->mode() == CONST || | 265 ASSERT(proxy->var()->mode() == CONST || |
267 proxy->var()->mode() == CONST_HARMONY); | 266 proxy->var()->mode() == CONST_HARMONY); |
268 EmitDeclaration(proxy, proxy->var()->mode(), NULL, &ignored); | 267 ASSERT(proxy->var()->location() != Variable::UNALLOCATED); |
| 268 EmitDeclaration(proxy, proxy->var()->mode(), NULL); |
269 } | 269 } |
270 VisitDeclarations(scope()->declarations()); | 270 VisitDeclarations(scope()->declarations()); |
271 } | 271 } |
272 | 272 |
273 { Comment cmnt(masm_, "[ Stack check"); | 273 { Comment cmnt(masm_, "[ Stack check"); |
274 PrepareForBailoutForId(AstNode::kDeclarationsId, NO_REGISTERS); | 274 PrepareForBailoutForId(AstNode::kDeclarationsId, NO_REGISTERS); |
275 Label ok; | 275 Label ok; |
276 ExternalReference stack_limit = | 276 ExternalReference stack_limit = |
277 ExternalReference::address_of_stack_limit(isolate()); | 277 ExternalReference::address_of_stack_limit(isolate()); |
278 __ cmp(esp, Operand::StaticVariable(stack_limit)); | 278 __ cmp(esp, Operand::StaticVariable(stack_limit)); |
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674 if (should_normalize) { | 674 if (should_normalize) { |
675 __ cmp(eax, isolate()->factory()->true_value()); | 675 __ cmp(eax, isolate()->factory()->true_value()); |
676 Split(equal, if_true, if_false, NULL); | 676 Split(equal, if_true, if_false, NULL); |
677 __ bind(&skip); | 677 __ bind(&skip); |
678 } | 678 } |
679 } | 679 } |
680 | 680 |
681 | 681 |
682 void FullCodeGenerator::EmitDeclaration(VariableProxy* proxy, | 682 void FullCodeGenerator::EmitDeclaration(VariableProxy* proxy, |
683 VariableMode mode, | 683 VariableMode mode, |
684 FunctionLiteral* function, | 684 FunctionLiteral* function) { |
685 int* global_count) { | |
686 // If it was not possible to allocate the variable at compile time, we | 685 // If it was not possible to allocate the variable at compile time, we |
687 // need to "declare" it at runtime to make sure it actually exists in the | 686 // need to "declare" it at runtime to make sure it actually exists in the |
688 // local context. | 687 // local context. |
689 Variable* variable = proxy->var(); | 688 Variable* variable = proxy->var(); |
690 bool binding_needs_init = (function == NULL) && | 689 bool binding_needs_init = (function == NULL) && |
691 (mode == CONST || mode == CONST_HARMONY || mode == LET); | 690 (mode == CONST || mode == CONST_HARMONY || mode == LET); |
692 switch (variable->location()) { | 691 switch (variable->location()) { |
693 case Variable::UNALLOCATED: | 692 case Variable::UNALLOCATED: |
694 ++(*global_count); | 693 ++global_count_; |
695 break; | 694 break; |
696 | 695 |
697 case Variable::PARAMETER: | 696 case Variable::PARAMETER: |
698 case Variable::LOCAL: | 697 case Variable::LOCAL: |
699 if (function != NULL) { | 698 if (function != NULL) { |
700 Comment cmnt(masm_, "[ Declaration"); | 699 Comment cmnt(masm_, "[ Declaration"); |
701 VisitForAccumulatorValue(function); | 700 VisitForAccumulatorValue(function); |
702 __ mov(StackOperand(variable), result_register()); | 701 __ mov(StackOperand(variable), result_register()); |
703 } else if (binding_needs_init) { | 702 } else if (binding_needs_init) { |
704 Comment cmnt(masm_, "[ Declaration"); | 703 Comment cmnt(masm_, "[ Declaration"); |
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764 } else { | 763 } else { |
765 __ push(Immediate(Smi::FromInt(0))); // Indicates no initial value. | 764 __ push(Immediate(Smi::FromInt(0))); // Indicates no initial value. |
766 } | 765 } |
767 __ CallRuntime(Runtime::kDeclareContextSlot, 4); | 766 __ CallRuntime(Runtime::kDeclareContextSlot, 4); |
768 break; | 767 break; |
769 } | 768 } |
770 } | 769 } |
771 } | 770 } |
772 | 771 |
773 | 772 |
774 void FullCodeGenerator::VisitDeclaration(Declaration* decl) { } | |
775 | |
776 | |
777 void FullCodeGenerator::DeclareGlobals(Handle<FixedArray> pairs) { | 773 void FullCodeGenerator::DeclareGlobals(Handle<FixedArray> pairs) { |
778 // Call the runtime to declare the globals. | 774 // Call the runtime to declare the globals. |
779 __ push(esi); // The context is the first argument. | 775 __ push(esi); // The context is the first argument. |
780 __ push(Immediate(pairs)); | 776 __ push(Immediate(pairs)); |
781 __ push(Immediate(Smi::FromInt(DeclareGlobalsFlags()))); | 777 __ push(Immediate(Smi::FromInt(DeclareGlobalsFlags()))); |
782 __ CallRuntime(Runtime::kDeclareGlobals, 3); | 778 __ CallRuntime(Runtime::kDeclareGlobals, 3); |
783 // Return value is ignored. | 779 // Return value is ignored. |
784 } | 780 } |
785 | 781 |
786 | 782 |
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4385 *context_length = 0; | 4381 *context_length = 0; |
4386 return previous_; | 4382 return previous_; |
4387 } | 4383 } |
4388 | 4384 |
4389 | 4385 |
4390 #undef __ | 4386 #undef __ |
4391 | 4387 |
4392 } } // namespace v8::internal | 4388 } } // namespace v8::internal |
4393 | 4389 |
4394 #endif // V8_TARGET_ARCH_IA32 | 4390 #endif // V8_TARGET_ARCH_IA32 |
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