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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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1786 STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); | 1786 STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
1787 __ CmpObjectType(input, FIRST_SPEC_OBJECT_TYPE, temp); | 1787 __ CmpObjectType(input, FIRST_SPEC_OBJECT_TYPE, temp); |
1788 __ j(below, is_false); | 1788 __ j(below, is_false); |
1789 __ j(equal, is_true); | 1789 __ j(equal, is_true); |
1790 __ CmpInstanceType(temp, LAST_SPEC_OBJECT_TYPE); | 1790 __ CmpInstanceType(temp, LAST_SPEC_OBJECT_TYPE); |
1791 __ j(equal, is_true); | 1791 __ j(equal, is_true); |
1792 } else { | 1792 } else { |
1793 // Faster code path to avoid two compares: subtract lower bound from the | 1793 // Faster code path to avoid two compares: subtract lower bound from the |
1794 // actual type and do a signed compare with the width of the type range. | 1794 // actual type and do a signed compare with the width of the type range. |
1795 __ movq(temp, FieldOperand(input, HeapObject::kMapOffset)); | 1795 __ movq(temp, FieldOperand(input, HeapObject::kMapOffset)); |
1796 __ movq(temp2, FieldOperand(temp, Map::kInstanceTypeOffset)); | 1796 __ movzxbl(temp2, FieldOperand(temp, Map::kInstanceTypeOffset)); |
1797 __ subb(temp2, Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); | 1797 __ subq(temp2, Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
1798 __ cmpb(temp2, | 1798 __ cmpq(temp2, Immediate(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - |
1799 Immediate(static_cast<int8_t>(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - | 1799 FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
1800 FIRST_NONCALLABLE_SPEC_OBJECT_TYPE))); | |
1801 __ j(above, is_false); | 1800 __ j(above, is_false); |
1802 } | 1801 } |
1803 | 1802 |
1804 // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. | 1803 // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. |
1805 // Check if the constructor in the map is a function. | 1804 // Check if the constructor in the map is a function. |
1806 __ movq(temp, FieldOperand(temp, Map::kConstructorOffset)); | 1805 __ movq(temp, FieldOperand(temp, Map::kConstructorOffset)); |
1807 | 1806 |
1808 // Objects with a non-function constructor have class 'Object'. | 1807 // Objects with a non-function constructor have class 'Object'. |
1809 __ CmpObjectType(temp, JS_FUNCTION_TYPE, kScratchRegister); | 1808 __ CmpObjectType(temp, JS_FUNCTION_TYPE, kScratchRegister); |
1810 if (class_name->IsEqualTo(CStrVector("Object"))) { | 1809 if (class_name->IsEqualTo(CStrVector("Object"))) { |
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4412 RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); | 4411 RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
4413 ASSERT(osr_pc_offset_ == -1); | 4412 ASSERT(osr_pc_offset_ == -1); |
4414 osr_pc_offset_ = masm()->pc_offset(); | 4413 osr_pc_offset_ = masm()->pc_offset(); |
4415 } | 4414 } |
4416 | 4415 |
4417 #undef __ | 4416 #undef __ |
4418 | 4417 |
4419 } } // namespace v8::internal | 4418 } } // namespace v8::internal |
4420 | 4419 |
4421 #endif // V8_TARGET_ARCH_X64 | 4420 #endif // V8_TARGET_ARCH_X64 |
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