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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/bootstrapper.h" | 9 #include "src/bootstrapper.h" |
10 #include "src/code-stubs.h" | 10 #include "src/code-stubs.h" |
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2477 int argc = state_.arg_count(); | 2477 int argc = state_.arg_count(); |
2478 ParameterCount actual(argc); | 2478 ParameterCount actual(argc); |
2479 | 2479 |
2480 EmitLoadTypeFeedbackVector(masm, ebx); | 2480 EmitLoadTypeFeedbackVector(masm, ebx); |
2481 | 2481 |
2482 __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, ecx); | 2482 __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, ecx); |
2483 __ cmp(edi, ecx); | 2483 __ cmp(edi, ecx); |
2484 __ j(not_equal, &miss); | 2484 __ j(not_equal, &miss); |
2485 | 2485 |
2486 __ mov(eax, arg_count()); | 2486 __ mov(eax, arg_count()); |
2487 __ mov(ebx, FieldOperand(ebx, edx, times_half_pointer_size, | 2487 __ mov(ecx, FieldOperand(ebx, edx, times_half_pointer_size, |
2488 FixedArray::kHeaderSize)); | 2488 FixedArray::kHeaderSize)); |
| 2489 |
2489 // Verify that ecx contains an AllocationSite | 2490 // Verify that ecx contains an AllocationSite |
2490 __ AssertUndefinedOrAllocationSite(ebx); | 2491 Factory* factory = masm->isolate()->factory(); |
| 2492 __ cmp(FieldOperand(ecx, HeapObject::kMapOffset), |
| 2493 factory->allocation_site_map()); |
| 2494 __ j(not_equal, &miss); |
| 2495 |
| 2496 __ mov(ebx, ecx); |
2491 ArrayConstructorStub stub(masm->isolate(), arg_count()); | 2497 ArrayConstructorStub stub(masm->isolate(), arg_count()); |
2492 __ TailCallStub(&stub); | 2498 __ TailCallStub(&stub); |
2493 | 2499 |
2494 __ bind(&miss); | 2500 __ bind(&miss); |
2495 GenerateMiss(masm, IC::kCallIC_Customization_Miss); | 2501 GenerateMiss(masm, IC::kCallIC_Customization_Miss); |
2496 | 2502 |
2497 // The slow case, we need this no matter what to complete a call after a miss. | 2503 // The slow case, we need this no matter what to complete a call after a miss. |
2498 CallFunctionNoFeedback(masm, | 2504 CallFunctionNoFeedback(masm, |
2499 arg_count(), | 2505 arg_count(), |
2500 true, | 2506 true, |
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2551 Label miss; | 2557 Label miss; |
2552 | 2558 |
2553 __ mov(ecx, FieldOperand(ebx, edx, times_half_pointer_size, | 2559 __ mov(ecx, FieldOperand(ebx, edx, times_half_pointer_size, |
2554 FixedArray::kHeaderSize)); | 2560 FixedArray::kHeaderSize)); |
2555 __ cmp(ecx, Immediate(TypeFeedbackInfo::MegamorphicSentinel(isolate))); | 2561 __ cmp(ecx, Immediate(TypeFeedbackInfo::MegamorphicSentinel(isolate))); |
2556 __ j(equal, &slow_start); | 2562 __ j(equal, &slow_start); |
2557 __ cmp(ecx, Immediate(TypeFeedbackInfo::UninitializedSentinel(isolate))); | 2563 __ cmp(ecx, Immediate(TypeFeedbackInfo::UninitializedSentinel(isolate))); |
2558 __ j(equal, &miss); | 2564 __ j(equal, &miss); |
2559 | 2565 |
2560 if (!FLAG_trace_ic) { | 2566 if (!FLAG_trace_ic) { |
2561 // We are going megamorphic, and we don't want to visit the runtime. | 2567 // We are going megamorphic. If the feedback is a JSFunction, it is fine |
| 2568 // to handle it here. More complex cases are dealt with in the runtime. |
| 2569 __ AssertNotSmi(ecx); |
| 2570 __ CmpObjectType(ecx, JS_FUNCTION_TYPE, ecx); |
| 2571 __ j(not_equal, &miss); |
2562 __ mov(FieldOperand(ebx, edx, times_half_pointer_size, | 2572 __ mov(FieldOperand(ebx, edx, times_half_pointer_size, |
2563 FixedArray::kHeaderSize), | 2573 FixedArray::kHeaderSize), |
2564 Immediate(TypeFeedbackInfo::MegamorphicSentinel(isolate))); | 2574 Immediate(TypeFeedbackInfo::MegamorphicSentinel(isolate))); |
2565 __ jmp(&slow_start); | 2575 __ jmp(&slow_start); |
2566 } | 2576 } |
2567 | 2577 |
2568 // We are here because tracing is on or we are going monomorphic. | 2578 // We are here because tracing is on or we are going monomorphic. |
2569 __ bind(&miss); | 2579 __ bind(&miss); |
2570 GenerateMiss(masm, IC::kCallIC_Miss); | 2580 GenerateMiss(masm, IC::kCallIC_Miss); |
2571 | 2581 |
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5085 Operand(ebp, 7 * kPointerSize), | 5095 Operand(ebp, 7 * kPointerSize), |
5086 NULL); | 5096 NULL); |
5087 } | 5097 } |
5088 | 5098 |
5089 | 5099 |
5090 #undef __ | 5100 #undef __ |
5091 | 5101 |
5092 } } // namespace v8::internal | 5102 } } // namespace v8::internal |
5093 | 5103 |
5094 #endif // V8_TARGET_ARCH_IA32 | 5104 #endif // V8_TARGET_ARCH_IA32 |
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