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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_X87 | 5 #if V8_TARGET_ARCH_X87 |
6 | 6 |
7 #include "src/crankshaft/x87/lithium-codegen-x87.h" | 7 #include "src/crankshaft/x87/lithium-codegen-x87.h" |
8 | 8 |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/code-factory.h" | 10 #include "src/code-factory.h" |
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2721 Register temp2) { | 2721 Register temp2) { |
2722 DCHECK(!input.is(temp)); | 2722 DCHECK(!input.is(temp)); |
2723 DCHECK(!input.is(temp2)); | 2723 DCHECK(!input.is(temp2)); |
2724 DCHECK(!temp.is(temp2)); | 2724 DCHECK(!temp.is(temp2)); |
2725 __ JumpIfSmi(input, is_false); | 2725 __ JumpIfSmi(input, is_false); |
2726 | 2726 |
2727 if (String::Equals(isolate()->factory()->Function_string(), class_name)) { | 2727 if (String::Equals(isolate()->factory()->Function_string(), class_name)) { |
2728 // Assuming the following assertions, we can use the same compares to test | 2728 // Assuming the following assertions, we can use the same compares to test |
2729 // for both being a function type and being in the object type range. | 2729 // for both being a function type and being in the object type range. |
2730 STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); | 2730 STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
2731 STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == | |
2732 FIRST_JS_RECEIVER_TYPE + 1); | |
2733 STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == | 2731 STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == |
2734 LAST_JS_RECEIVER_TYPE - 1); | 2732 LAST_JS_RECEIVER_TYPE - 1); |
2735 STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); | 2733 STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); |
Camillo Bruni
2015/12/11 12:37:27
It would probably make some things easier by havin
| |
2736 __ CmpObjectType(input, FIRST_JS_RECEIVER_TYPE, temp); | 2734 __ CmpObjectType(input, FIRST_JS_RECEIVER_TYPE, temp); |
2737 __ j(below, is_false); | 2735 __ j(below, is_false); |
2738 __ j(equal, is_true); | |
2739 __ CmpInstanceType(temp, LAST_JS_RECEIVER_TYPE); | 2736 __ CmpInstanceType(temp, LAST_JS_RECEIVER_TYPE); |
Camillo Bruni
2015/12/11 12:37:27
Why don't we compare directly with JS_FUNCTION_TYP
| |
2740 __ j(equal, is_true); | 2737 __ j(equal, is_true); |
2741 } else { | 2738 } else { |
2742 // Faster code path to avoid two compares: subtract lower bound from the | 2739 // Faster code path to avoid two compares: subtract lower bound from the |
2743 // actual type and do a signed compare with the width of the type range. | 2740 // actual type and do a signed compare with the width of the type range. |
2744 __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); | 2741 __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
2745 __ movzx_b(temp2, FieldOperand(temp, Map::kInstanceTypeOffset)); | 2742 __ movzx_b(temp2, FieldOperand(temp, Map::kInstanceTypeOffset)); |
2746 __ sub(Operand(temp2), Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); | 2743 __ sub(Operand(temp2), Immediate(FIRST_JS_RECEIVER_TYPE)); |
2747 __ cmp(Operand(temp2), Immediate(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - | 2744 __ cmp(Operand(temp2), Immediate(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - |
2748 FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); | 2745 FIRST_JS_RECEIVER_TYPE)); |
2749 __ j(above, is_false); | 2746 __ j(above, is_false); |
2750 } | 2747 } |
2751 | 2748 |
2752 // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. | 2749 // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. |
2753 // Check if the constructor in the map is a function. | 2750 // Check if the constructor in the map is a function. |
2754 __ GetMapConstructor(temp, temp, temp2); | 2751 __ GetMapConstructor(temp, temp, temp2); |
2755 // Objects with a non-function constructor have class 'Object'. | 2752 // Objects with a non-function constructor have class 'Object'. |
2756 __ CmpInstanceType(temp2, JS_FUNCTION_TYPE); | 2753 __ CmpInstanceType(temp2, JS_FUNCTION_TYPE); |
2757 if (String::Equals(class_name, isolate()->factory()->Object_string())) { | 2754 if (String::Equals(class_name, isolate()->factory()->Object_string())) { |
2758 __ j(not_equal, is_true); | 2755 __ j(not_equal, is_true); |
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6071 RecordSafepoint(Safepoint::kNoLazyDeopt); | 6068 RecordSafepoint(Safepoint::kNoLazyDeopt); |
6072 } | 6069 } |
6073 | 6070 |
6074 | 6071 |
6075 #undef __ | 6072 #undef __ |
6076 | 6073 |
6077 } // namespace internal | 6074 } // namespace internal |
6078 } // namespace v8 | 6075 } // namespace v8 |
6079 | 6076 |
6080 #endif // V8_TARGET_ARCH_X87 | 6077 #endif // V8_TARGET_ARCH_X87 |
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