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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #if V8_TARGET_ARCH_X64 | 5 #if V8_TARGET_ARCH_X64 |
6 | 6 |
7 #include "src/ast/scopes.h" | 7 #include "src/ast/scopes.h" |
8 #include "src/code-factory.h" | 8 #include "src/code-factory.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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1153 | 1153 |
1154 | 1154 |
1155 void FullCodeGenerator::EmitNewClosure(Handle<SharedFunctionInfo> info, | 1155 void FullCodeGenerator::EmitNewClosure(Handle<SharedFunctionInfo> info, |
1156 bool pretenure) { | 1156 bool pretenure) { |
1157 // Use the fast case closure allocation code that allocates in new | 1157 // Use the fast case closure allocation code that allocates in new |
1158 // space for nested functions that don't need literals cloning. If | 1158 // space for nested functions that don't need literals cloning. If |
1159 // we're running with the --always-opt or the --prepare-always-opt | 1159 // we're running with the --always-opt or the --prepare-always-opt |
1160 // flag, we need to use the runtime function so that the new function | 1160 // flag, we need to use the runtime function so that the new function |
1161 // we are creating here gets a chance to have its code optimized and | 1161 // we are creating here gets a chance to have its code optimized and |
1162 // doesn't just get a copy of the existing unoptimized code. | 1162 // doesn't just get a copy of the existing unoptimized code. |
1163 if (!FLAG_always_opt && !FLAG_prepare_always_opt && !pretenure && | 1163 if (!FLAG_always_opt && |
1164 scope()->is_function_scope()) { | 1164 !FLAG_prepare_always_opt && |
| 1165 !pretenure && |
| 1166 scope()->is_function_scope() && |
| 1167 info->num_literals() == 0) { |
1165 FastNewClosureStub stub(isolate(), info->language_mode(), info->kind()); | 1168 FastNewClosureStub stub(isolate(), info->language_mode(), info->kind()); |
1166 __ Move(rbx, info); | 1169 __ Move(rbx, info); |
1167 __ CallStub(&stub); | 1170 __ CallStub(&stub); |
1168 } else { | 1171 } else { |
1169 __ Push(info); | 1172 __ Push(info); |
1170 __ CallRuntime(pretenure ? Runtime::kNewClosure_Tenured | 1173 __ CallRuntime(pretenure ? Runtime::kNewClosure_Tenured |
1171 : Runtime::kNewClosure); | 1174 : Runtime::kNewClosure); |
1172 } | 1175 } |
1173 context()->Plug(rax); | 1176 context()->Plug(rax); |
1174 } | 1177 } |
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4715 Assembler::target_address_at(call_target_address, | 4718 Assembler::target_address_at(call_target_address, |
4716 unoptimized_code)); | 4719 unoptimized_code)); |
4717 return OSR_AFTER_STACK_CHECK; | 4720 return OSR_AFTER_STACK_CHECK; |
4718 } | 4721 } |
4719 | 4722 |
4720 | 4723 |
4721 } // namespace internal | 4724 } // namespace internal |
4722 } // namespace v8 | 4725 } // namespace v8 |
4723 | 4726 |
4724 #endif // V8_TARGET_ARCH_X64 | 4727 #endif // V8_TARGET_ARCH_X64 |
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