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Issue 6677036: Fast path for strict closure creation. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 9 years, 9 months ago
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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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3686 __ mov(FieldOperand(eax, size - kPointerSize), edx); 3686 __ mov(FieldOperand(eax, size - kPointerSize), edx);
3687 } 3687 }
3688 } 3688 }
3689 3689
3690 3690
3691 void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) { 3691 void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) {
3692 // Use the fast case closure allocation code that allocates in new 3692 // Use the fast case closure allocation code that allocates in new
3693 // space for nested functions that don't need literals cloning. 3693 // space for nested functions that don't need literals cloning.
3694 Handle<SharedFunctionInfo> shared_info = instr->shared_info(); 3694 Handle<SharedFunctionInfo> shared_info = instr->shared_info();
3695 bool pretenure = instr->hydrogen()->pretenure(); 3695 bool pretenure = instr->hydrogen()->pretenure();
3696 if (!pretenure && shared_info->num_literals() == 0 && 3696 if (!pretenure && shared_info->num_literals() == 0) {
3697 !shared_info->strict_mode()) { 3697 FastNewClosureStub stub(
3698 FastNewClosureStub stub; 3698 shared_info->strict_mode() ? kStrictMode : kNonStrictMode);
3699 __ push(Immediate(shared_info)); 3699 __ push(Immediate(shared_info));
3700 CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr, false); 3700 CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr, false);
3701 } else { 3701 } else {
3702 __ push(Operand(ebp, StandardFrameConstants::kContextOffset)); 3702 __ push(Operand(ebp, StandardFrameConstants::kContextOffset));
3703 __ push(Immediate(shared_info)); 3703 __ push(Immediate(shared_info));
3704 __ push(Immediate(pretenure 3704 __ push(Immediate(pretenure
3705 ? Factory::true_value() 3705 ? Factory::true_value()
3706 : Factory::false_value())); 3706 : Factory::false_value()));
3707 CallRuntime(Runtime::kNewClosure, 3, instr, false); 3707 CallRuntime(Runtime::kNewClosure, 3, instr, false);
3708 } 3708 }
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3939 ASSERT(osr_pc_offset_ == -1); 3939 ASSERT(osr_pc_offset_ == -1);
3940 osr_pc_offset_ = masm()->pc_offset(); 3940 osr_pc_offset_ = masm()->pc_offset();
3941 } 3941 }
3942 3942
3943 3943
3944 #undef __ 3944 #undef __
3945 3945
3946 } } // namespace v8::internal 3946 } } // namespace v8::internal
3947 3947
3948 #endif // V8_TARGET_ARCH_IA32 3948 #endif // V8_TARGET_ARCH_IA32
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