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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 // 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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2651 | 2651 |
2652 void MacroAssembler::CmpInstanceType(Register map, InstanceType type) { | 2652 void MacroAssembler::CmpInstanceType(Register map, InstanceType type) { |
2653 cmpb(FieldOperand(map, Map::kInstanceTypeOffset), | 2653 cmpb(FieldOperand(map, Map::kInstanceTypeOffset), |
2654 Immediate(static_cast<int8_t>(type))); | 2654 Immediate(static_cast<int8_t>(type))); |
2655 } | 2655 } |
2656 | 2656 |
2657 | 2657 |
2658 void MacroAssembler::CheckFastElements(Register map, | 2658 void MacroAssembler::CheckFastElements(Register map, |
2659 Label* fail, | 2659 Label* fail, |
2660 Label::Distance distance) { | 2660 Label::Distance distance) { |
2661 STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); | 2661 STATIC_ASSERT(FAST_SMI_ONLY_ELEMENTS == 0); |
2662 STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); | 2662 STATIC_ASSERT(FAST_ELEMENTS == 1); |
2663 STATIC_ASSERT(FAST_ELEMENTS == 2); | |
2664 STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); | |
2665 cmpb(FieldOperand(map, Map::kBitField2Offset), | 2663 cmpb(FieldOperand(map, Map::kBitField2Offset), |
2666 Immediate(Map::kMaximumBitField2FastHoleyElementValue)); | 2664 Immediate(Map::kMaximumBitField2FastElementValue)); |
2667 j(above, fail, distance); | 2665 j(above, fail, distance); |
2668 } | 2666 } |
2669 | 2667 |
2670 | 2668 |
2671 void MacroAssembler::CheckFastObjectElements(Register map, | 2669 void MacroAssembler::CheckFastObjectElements(Register map, |
2672 Label* fail, | 2670 Label* fail, |
2673 Label::Distance distance) { | 2671 Label::Distance distance) { |
2674 STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); | 2672 STATIC_ASSERT(FAST_SMI_ONLY_ELEMENTS == 0); |
2675 STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); | 2673 STATIC_ASSERT(FAST_ELEMENTS == 1); |
2676 STATIC_ASSERT(FAST_ELEMENTS == 2); | |
2677 STATIC_ASSERT(FAST_HOLEY_ELEMENTS == 3); | |
2678 cmpb(FieldOperand(map, Map::kBitField2Offset), | 2674 cmpb(FieldOperand(map, Map::kBitField2Offset), |
2679 Immediate(Map::kMaximumBitField2FastHoleySmiElementValue)); | 2675 Immediate(Map::kMaximumBitField2FastSmiOnlyElementValue)); |
2680 j(below_equal, fail, distance); | 2676 j(below_equal, fail, distance); |
2681 cmpb(FieldOperand(map, Map::kBitField2Offset), | 2677 cmpb(FieldOperand(map, Map::kBitField2Offset), |
2682 Immediate(Map::kMaximumBitField2FastHoleyElementValue)); | 2678 Immediate(Map::kMaximumBitField2FastElementValue)); |
2683 j(above, fail, distance); | 2679 j(above, fail, distance); |
2684 } | 2680 } |
2685 | 2681 |
2686 | 2682 |
2687 void MacroAssembler::CheckFastSmiElements(Register map, | 2683 void MacroAssembler::CheckFastSmiOnlyElements(Register map, |
2688 Label* fail, | 2684 Label* fail, |
2689 Label::Distance distance) { | 2685 Label::Distance distance) { |
2690 STATIC_ASSERT(FAST_SMI_ELEMENTS == 0); | 2686 STATIC_ASSERT(FAST_SMI_ONLY_ELEMENTS == 0); |
2691 STATIC_ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); | |
2692 cmpb(FieldOperand(map, Map::kBitField2Offset), | 2687 cmpb(FieldOperand(map, Map::kBitField2Offset), |
2693 Immediate(Map::kMaximumBitField2FastHoleySmiElementValue)); | 2688 Immediate(Map::kMaximumBitField2FastSmiOnlyElementValue)); |
2694 j(above, fail, distance); | 2689 j(above, fail, distance); |
2695 } | 2690 } |
2696 | 2691 |
2697 | 2692 |
2698 void MacroAssembler::StoreNumberToDoubleElements( | 2693 void MacroAssembler::StoreNumberToDoubleElements( |
2699 Register maybe_number, | 2694 Register maybe_number, |
2700 Register elements, | 2695 Register elements, |
2701 Register index, | 2696 Register index, |
2702 XMMRegister xmm_scratch, | 2697 XMMRegister xmm_scratch, |
2703 Label* fail) { | 2698 Label* fail) { |
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2747 bind(&done); | 2742 bind(&done); |
2748 } | 2743 } |
2749 | 2744 |
2750 | 2745 |
2751 void MacroAssembler::CompareMap(Register obj, | 2746 void MacroAssembler::CompareMap(Register obj, |
2752 Handle<Map> map, | 2747 Handle<Map> map, |
2753 Label* early_success, | 2748 Label* early_success, |
2754 CompareMapMode mode) { | 2749 CompareMapMode mode) { |
2755 Cmp(FieldOperand(obj, HeapObject::kMapOffset), map); | 2750 Cmp(FieldOperand(obj, HeapObject::kMapOffset), map); |
2756 if (mode == ALLOW_ELEMENT_TRANSITION_MAPS) { | 2751 if (mode == ALLOW_ELEMENT_TRANSITION_MAPS) { |
2757 ElementsKind kind = map->elements_kind(); | 2752 Map* transitioned_fast_element_map( |
2758 if (IsFastElementsKind(kind)) { | 2753 map->LookupElementsTransitionMap(FAST_ELEMENTS, NULL)); |
2759 bool packed = IsFastPackedElementsKind(kind); | 2754 ASSERT(transitioned_fast_element_map == NULL || |
2760 Map* current_map = *map; | 2755 map->elements_kind() != FAST_ELEMENTS); |
2761 while (CanTransitionToMoreGeneralFastElementsKind(kind, packed)) { | 2756 if (transitioned_fast_element_map != NULL) { |
2762 kind = GetNextMoreGeneralFastElementsKind(kind, packed); | 2757 j(equal, early_success, Label::kNear); |
2763 current_map = current_map->LookupElementsTransitionMap(kind, NULL); | 2758 Cmp(FieldOperand(obj, HeapObject::kMapOffset), |
2764 if (!current_map) break; | 2759 Handle<Map>(transitioned_fast_element_map)); |
2765 j(equal, early_success, Label::kNear); | 2760 } |
2766 Cmp(FieldOperand(obj, HeapObject::kMapOffset), | 2761 |
2767 Handle<Map>(current_map)); | 2762 Map* transitioned_double_map( |
2768 } | 2763 map->LookupElementsTransitionMap(FAST_DOUBLE_ELEMENTS, NULL)); |
| 2764 ASSERT(transitioned_double_map == NULL || |
| 2765 map->elements_kind() == FAST_SMI_ONLY_ELEMENTS); |
| 2766 if (transitioned_double_map != NULL) { |
| 2767 j(equal, early_success, Label::kNear); |
| 2768 Cmp(FieldOperand(obj, HeapObject::kMapOffset), |
| 2769 Handle<Map>(transitioned_double_map)); |
2769 } | 2770 } |
2770 } | 2771 } |
2771 } | 2772 } |
2772 | 2773 |
2773 | 2774 |
2774 void MacroAssembler::CheckMap(Register obj, | 2775 void MacroAssembler::CheckMap(Register obj, |
2775 Handle<Map> map, | 2776 Handle<Map> map, |
2776 Label* fail, | 2777 Label* fail, |
2777 SmiCheckType smi_check_type, | 2778 SmiCheckType smi_check_type, |
2778 CompareMapMode mode) { | 2779 CompareMapMode mode) { |
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4049 ElementsKind expected_kind, | 4050 ElementsKind expected_kind, |
4050 ElementsKind transitioned_kind, | 4051 ElementsKind transitioned_kind, |
4051 Register map_in_out, | 4052 Register map_in_out, |
4052 Register scratch, | 4053 Register scratch, |
4053 Label* no_map_match) { | 4054 Label* no_map_match) { |
4054 // Load the global or builtins object from the current context. | 4055 // Load the global or builtins object from the current context. |
4055 movq(scratch, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); | 4056 movq(scratch, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); |
4056 movq(scratch, FieldOperand(scratch, GlobalObject::kGlobalContextOffset)); | 4057 movq(scratch, FieldOperand(scratch, GlobalObject::kGlobalContextOffset)); |
4057 | 4058 |
4058 // Check that the function's map is the same as the expected cached map. | 4059 // Check that the function's map is the same as the expected cached map. |
4059 movq(scratch, Operand(scratch, | 4060 int expected_index = |
4060 Context::SlotOffset(Context::JS_ARRAY_MAPS_INDEX))); | 4061 Context::GetContextMapIndexFromElementsKind(expected_kind); |
4061 | 4062 cmpq(map_in_out, Operand(scratch, Context::SlotOffset(expected_index))); |
4062 int offset = expected_kind * kPointerSize + | |
4063 FixedArrayBase::kHeaderSize; | |
4064 cmpq(map_in_out, FieldOperand(scratch, offset)); | |
4065 j(not_equal, no_map_match); | 4063 j(not_equal, no_map_match); |
4066 | 4064 |
4067 // Use the transitioned cached map. | 4065 // Use the transitioned cached map. |
4068 offset = transitioned_kind * kPointerSize + | 4066 int trans_index = |
4069 FixedArrayBase::kHeaderSize; | 4067 Context::GetContextMapIndexFromElementsKind(transitioned_kind); |
4070 movq(map_in_out, FieldOperand(scratch, offset)); | 4068 movq(map_in_out, Operand(scratch, Context::SlotOffset(trans_index))); |
4071 } | 4069 } |
4072 | 4070 |
4073 | 4071 |
4074 void MacroAssembler::LoadInitialArrayMap( | 4072 void MacroAssembler::LoadInitialArrayMap( |
4075 Register function_in, Register scratch, | 4073 Register function_in, Register scratch, Register map_out) { |
4076 Register map_out, bool can_have_holes) { | |
4077 ASSERT(!function_in.is(map_out)); | 4074 ASSERT(!function_in.is(map_out)); |
4078 Label done; | 4075 Label done; |
4079 movq(map_out, FieldOperand(function_in, | 4076 movq(map_out, FieldOperand(function_in, |
4080 JSFunction::kPrototypeOrInitialMapOffset)); | 4077 JSFunction::kPrototypeOrInitialMapOffset)); |
4081 if (!FLAG_smi_only_arrays) { | 4078 if (!FLAG_smi_only_arrays) { |
4082 ElementsKind kind = can_have_holes ? FAST_HOLEY_ELEMENTS : FAST_ELEMENTS; | 4079 LoadTransitionedArrayMapConditional(FAST_SMI_ONLY_ELEMENTS, |
4083 LoadTransitionedArrayMapConditional(FAST_SMI_ELEMENTS, | 4080 FAST_ELEMENTS, |
4084 kind, | |
4085 map_out, | 4081 map_out, |
4086 scratch, | 4082 scratch, |
4087 &done); | 4083 &done); |
4088 } else if (can_have_holes) { | |
4089 LoadTransitionedArrayMapConditional(FAST_SMI_ELEMENTS, | |
4090 FAST_HOLEY_SMI_ELEMENTS, | |
4091 map_out, | |
4092 scratch, | |
4093 &done); | |
4094 } | 4084 } |
4095 bind(&done); | 4085 bind(&done); |
4096 } | 4086 } |
4097 | 4087 |
4098 #ifdef _WIN64 | 4088 #ifdef _WIN64 |
4099 static const int kRegisterPassedArguments = 4; | 4089 static const int kRegisterPassedArguments = 4; |
4100 #else | 4090 #else |
4101 static const int kRegisterPassedArguments = 6; | 4091 static const int kRegisterPassedArguments = 6; |
4102 #endif | 4092 #endif |
4103 | 4093 |
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4446 bind(&check_prototype); | 4436 bind(&check_prototype); |
4447 movq(rcx, FieldOperand(rbx, Map::kPrototypeOffset)); | 4437 movq(rcx, FieldOperand(rbx, Map::kPrototypeOffset)); |
4448 cmpq(rcx, null_value); | 4438 cmpq(rcx, null_value); |
4449 j(not_equal, &next); | 4439 j(not_equal, &next); |
4450 } | 4440 } |
4451 | 4441 |
4452 | 4442 |
4453 } } // namespace v8::internal | 4443 } } // namespace v8::internal |
4454 | 4444 |
4455 #endif // V8_TARGET_ARCH_X64 | 4445 #endif // V8_TARGET_ARCH_X64 |
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