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Issue 6691003: Strict mode poision pills. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Kraken fix. 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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1032 void FullCodeGenerator::EmitNewClosure(Handle<SharedFunctionInfo> info, 1032 void FullCodeGenerator::EmitNewClosure(Handle<SharedFunctionInfo> info,
1033 bool pretenure) { 1033 bool pretenure) {
1034 // Use the fast case closure allocation code that allocates in new 1034 // Use the fast case closure allocation code that allocates in new
1035 // space for nested functions that don't need literals cloning. If 1035 // space for nested functions that don't need literals cloning. If
1036 // we're running with the --always-opt or the --prepare-always-opt 1036 // we're running with the --always-opt or the --prepare-always-opt
1037 // flag, we need to use the runtime function so that the new function 1037 // flag, we need to use the runtime function so that the new function
1038 // we are creating here gets a chance to have its code optimized and 1038 // we are creating here gets a chance to have its code optimized and
1039 // doesn't just get a copy of the existing unoptimized code. 1039 // doesn't just get a copy of the existing unoptimized code.
1040 if (!FLAG_always_opt && 1040 if (!FLAG_always_opt &&
1041 !FLAG_prepare_always_opt && 1041 !FLAG_prepare_always_opt &&
1042 !pretenure &&
1042 scope()->is_function_scope() && 1043 scope()->is_function_scope() &&
1043 info->num_literals() == 0 && 1044 info->num_literals() == 0 &&
1044 !pretenure) { 1045 !info->strict_mode()) { // Strict mode functions use slow path.
1045 FastNewClosureStub stub; 1046 FastNewClosureStub stub;
1046 __ Push(info); 1047 __ Push(info);
1047 __ CallStub(&stub); 1048 __ CallStub(&stub);
1048 } else { 1049 } else {
1049 __ push(rsi); 1050 __ push(rsi);
1050 __ Push(info); 1051 __ Push(info);
1051 __ Push(pretenure ? Factory::true_value() : Factory::false_value()); 1052 __ Push(pretenure ? Factory::true_value() : Factory::false_value());
1052 __ CallRuntime(Runtime::kNewClosure, 3); 1053 __ CallRuntime(Runtime::kNewClosure, 3);
1053 } 1054 }
1054 context()->Plug(rax); 1055 context()->Plug(rax);
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3966 __ ret(0); 3967 __ ret(0);
3967 } 3968 }
3968 3969
3969 3970
3970 #undef __ 3971 #undef __
3971 3972
3972 3973
3973 } } // namespace v8::internal 3974 } } // namespace v8::internal
3974 3975
3975 #endif // V8_TARGET_ARCH_X64 3976 #endif // V8_TARGET_ARCH_X64
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