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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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_X64 | 7 #if V8_TARGET_ARCH_X64 |
| 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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| 1558 } | 1558 } |
| 1559 | 1559 |
| 1560 // Test for NaN. Sadly, we can't just compare to Factory::nan_value(), | 1560 // Test for NaN. Sadly, we can't just compare to Factory::nan_value(), |
| 1561 // so we do the second best thing - test it ourselves. | 1561 // so we do the second best thing - test it ourselves. |
| 1562 Label heap_number; | 1562 Label heap_number; |
| 1563 // If it's not a heap number, then return equal for (in)equality operator. | 1563 // If it's not a heap number, then return equal for (in)equality operator. |
| 1564 __ Cmp(FieldOperand(rdx, HeapObject::kMapOffset), | 1564 __ Cmp(FieldOperand(rdx, HeapObject::kMapOffset), |
| 1565 factory->heap_number_map()); | 1565 factory->heap_number_map()); |
| 1566 __ j(equal, &heap_number, Label::kNear); | 1566 __ j(equal, &heap_number, Label::kNear); |
| 1567 if (cc != equal) { | 1567 if (cc != equal) { |
| 1568 Label not_simd; |
| 1568 __ movp(rcx, FieldOperand(rax, HeapObject::kMapOffset)); | 1569 __ movp(rcx, FieldOperand(rax, HeapObject::kMapOffset)); |
| 1569 __ movzxbl(rcx, FieldOperand(rcx, Map::kInstanceTypeOffset)); | 1570 __ movzxbl(rcx, FieldOperand(rcx, Map::kInstanceTypeOffset)); |
| 1570 // Call runtime on identical objects. Otherwise return equal. | 1571 // Call runtime on identical objects. Otherwise return equal. |
| 1571 __ cmpb(rcx, Immediate(static_cast<uint8_t>(FIRST_SPEC_OBJECT_TYPE))); | 1572 __ cmpb(rcx, Immediate(static_cast<uint8_t>(FIRST_SPEC_OBJECT_TYPE))); |
| 1572 __ j(above_equal, &runtime_call, Label::kFar); | 1573 __ j(above_equal, &runtime_call, Label::kFar); |
| 1573 // Call runtime on identical symbols since we need to throw a TypeError. | 1574 // Call runtime on identical symbols since we need to throw a TypeError. |
| 1574 __ cmpb(rcx, Immediate(static_cast<uint8_t>(SYMBOL_TYPE))); | 1575 __ cmpb(rcx, Immediate(static_cast<uint8_t>(SYMBOL_TYPE))); |
| 1575 __ j(equal, &runtime_call, Label::kFar); | 1576 __ j(equal, &runtime_call, Label::kFar); |
| 1576 // Call runtime on identical SIMD values since we must throw a TypeError. | 1577 // Call runtime on identical SIMD values since we must throw a TypeError. |
| 1577 __ cmpb(rcx, Immediate(static_cast<uint8_t>(FLOAT32X4_TYPE))); | 1578 __ cmpb(rcx, Immediate(static_cast<uint8_t>(FIRST_SIMD_VALUE_TYPE))); |
| 1578 __ j(equal, &runtime_call, Label::kFar); | 1579 __ j(less, ¬_simd, Label::kFar); |
| 1580 __ cmpb(rcx, Immediate(static_cast<uint8_t>(LAST_SIMD_VALUE_TYPE))); |
| 1581 __ j(less_equal, &runtime_call, Label::kFar); |
| 1582 __ bind(¬_simd); |
| 1579 if (is_strong(strength())) { | 1583 if (is_strong(strength())) { |
| 1580 // We have already tested for smis and heap numbers, so if both | 1584 // We have already tested for smis and heap numbers, so if both |
| 1581 // arguments are not strings we must proceed to the slow case. | 1585 // arguments are not strings we must proceed to the slow case. |
| 1582 __ testb(rcx, Immediate(kIsNotStringMask)); | 1586 __ testb(rcx, Immediate(kIsNotStringMask)); |
| 1583 __ j(not_zero, &runtime_call, Label::kFar); | 1587 __ j(not_zero, &runtime_call, Label::kFar); |
| 1584 } | 1588 } |
| 1585 } | 1589 } |
| 1586 __ Set(rax, EQUAL); | 1590 __ Set(rax, EQUAL); |
| 1587 __ ret(0); | 1591 __ ret(0); |
| 1588 | 1592 |
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| 5583 kStackSpace, nullptr, return_value_operand, NULL); | 5587 kStackSpace, nullptr, return_value_operand, NULL); |
| 5584 } | 5588 } |
| 5585 | 5589 |
| 5586 | 5590 |
| 5587 #undef __ | 5591 #undef __ |
| 5588 | 5592 |
| 5589 } // namespace internal | 5593 } // namespace internal |
| 5590 } // namespace v8 | 5594 } // namespace v8 |
| 5591 | 5595 |
| 5592 #endif // V8_TARGET_ARCH_X64 | 5596 #endif // V8_TARGET_ARCH_X64 |
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