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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 #include "src/v8.h" | 5 #include "src/v8.h" |
| 6 | 6 |
| 7 #if V8_TARGET_ARCH_IA32 | 7 #if V8_TARGET_ARCH_IA32 |
| 8 | 8 |
| 9 #include "src/code-factory.h" | 9 #include "src/code-factory.h" |
| 10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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| 1045 const int limitOffset) { | 1045 const int limitOffset) { |
| 1046 // Copy all arguments from the array to the stack. | 1046 // Copy all arguments from the array to the stack. |
| 1047 Label entry, loop; | 1047 Label entry, loop; |
| 1048 Register receiver = LoadDescriptor::ReceiverRegister(); | 1048 Register receiver = LoadDescriptor::ReceiverRegister(); |
| 1049 Register key = LoadDescriptor::NameRegister(); | 1049 Register key = LoadDescriptor::NameRegister(); |
| 1050 __ mov(key, Operand(ebp, indexOffset)); | 1050 __ mov(key, Operand(ebp, indexOffset)); |
| 1051 __ jmp(&entry); | 1051 __ jmp(&entry); |
| 1052 __ bind(&loop); | 1052 __ bind(&loop); |
| 1053 __ mov(receiver, Operand(ebp, argumentsOffset)); // load arguments | 1053 __ mov(receiver, Operand(ebp, argumentsOffset)); // load arguments |
| 1054 | 1054 |
| 1055 if (FLAG_vector_ics) { | 1055 // Use inline caching to speed up access to arguments. |
| 1056 // TODO(mvstanton): Vector-based ics need additional infrastructure to | 1056 Handle<Code> ic = masm->isolate()->builtins()->KeyedLoadIC_Megamorphic(); |
| 1057 // be embedded here. For now, just call the runtime. | 1057 __ call(ic, RelocInfo::CODE_TARGET); |
| 1058 __ push(receiver); | 1058 // It is important that we do not have a test instruction after the |
| 1059 __ push(key); | 1059 // call. A test instruction after the call is used to indicate that |
| 1060 __ CallRuntime(Runtime::kGetProperty, 2); | 1060 // we have generated an inline version of the keyed load. In this |
| 1061 } else { | 1061 // case, we know that we are not generating a test instruction next. |
| 1062 // Use inline caching to speed up access to arguments. | |
| 1063 Handle<Code> ic = CodeFactory::KeyedLoadIC(masm->isolate()).code(); | |
| 1064 __ call(ic, RelocInfo::CODE_TARGET); | |
| 1065 // It is important that we do not have a test instruction after the | |
| 1066 // call. A test instruction after the call is used to indicate that | |
| 1067 // we have generated an inline version of the keyed load. In this | |
| 1068 // case, we know that we are not generating a test instruction next. | |
| 1069 } | |
| 1070 | 1062 |
| 1071 // Push the nth argument. | 1063 // Push the nth argument. |
| 1072 __ push(eax); | 1064 __ push(eax); |
| 1073 | 1065 |
| 1074 // Update the index on the stack and in register key. | 1066 // Update the index on the stack and in register key. |
| 1075 __ mov(key, Operand(ebp, indexOffset)); | 1067 __ mov(key, Operand(ebp, indexOffset)); |
| 1076 __ add(key, Immediate(1 << kSmiTagSize)); | 1068 __ add(key, Immediate(1 << kSmiTagSize)); |
| 1077 __ mov(Operand(ebp, indexOffset), key); | 1069 __ mov(Operand(ebp, indexOffset), key); |
| 1078 | 1070 |
| 1079 __ bind(&entry); | 1071 __ bind(&entry); |
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| 1690 | 1682 |
| 1691 __ bind(&ok); | 1683 __ bind(&ok); |
| 1692 __ ret(0); | 1684 __ ret(0); |
| 1693 } | 1685 } |
| 1694 | 1686 |
| 1695 #undef __ | 1687 #undef __ |
| 1696 } | 1688 } |
| 1697 } // namespace v8::internal | 1689 } // namespace v8::internal |
| 1698 | 1690 |
| 1699 #endif // V8_TARGET_ARCH_IA32 | 1691 #endif // V8_TARGET_ARCH_IA32 |
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