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Issue 7071009: Revert "Pass undefined to JS builtins when called with implicit receiver." (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 9 years, 7 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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124 SetFunctionPosition(function()); 124 SetFunctionPosition(function());
125 Comment cmnt(masm_, "[ function compiled by full code generator"); 125 Comment cmnt(masm_, "[ function compiled by full code generator");
126 126
127 #ifdef DEBUG 127 #ifdef DEBUG
128 if (strlen(FLAG_stop_at) > 0 && 128 if (strlen(FLAG_stop_at) > 0 &&
129 info->function()->name()->IsEqualTo(CStrVector(FLAG_stop_at))) { 129 info->function()->name()->IsEqualTo(CStrVector(FLAG_stop_at))) {
130 __ int3(); 130 __ int3();
131 } 131 }
132 #endif 132 #endif
133 133
134 // Strict mode functions and builtins need to replace the receiver 134 // Strict mode functions need to replace the receiver with undefined
135 // with undefined when called as functions (without an explicit 135 // when called as functions (without an explicit receiver
136 // receiver object). rcx is zero for method calls and non-zero for 136 // object). rcx is zero for method calls and non-zero for function
137 // function calls. 137 // calls.
138 if (info->is_strict_mode() || info->is_native()) { 138 if (info->is_strict_mode()) {
139 Label ok; 139 Label ok;
140 __ testq(rcx, rcx); 140 __ testq(rcx, rcx);
141 __ j(zero, &ok, Label::kNear); 141 __ j(zero, &ok, Label::kNear);
142 // +1 for return address. 142 // +1 for return address.
143 int receiver_offset = (scope()->num_parameters() + 1) * kPointerSize; 143 int receiver_offset = (scope()->num_parameters() + 1) * kPointerSize;
144 __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex); 144 __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex);
145 __ movq(Operand(rsp, receiver_offset), kScratchRegister); 145 __ movq(Operand(rsp, receiver_offset), kScratchRegister);
146 __ bind(&ok); 146 __ bind(&ok);
147 } 147 }
148 148
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4309 __ ret(0); 4309 __ ret(0);
4310 } 4310 }
4311 4311
4312 4312
4313 #undef __ 4313 #undef __
4314 4314
4315 4315
4316 } } // namespace v8::internal 4316 } } // namespace v8::internal
4317 4317
4318 #endif // V8_TARGET_ARCH_X64 4318 #endif // V8_TARGET_ARCH_X64
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