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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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777 void JumpIfNotUniqueName(Operand operand, Label* not_unique_name, | 777 void JumpIfNotUniqueName(Operand operand, Label* not_unique_name, |
778 Label::Distance distance = Label::kFar); | 778 Label::Distance distance = Label::kFar); |
779 | 779 |
780 // --------------------------------------------------------------------------- | 780 // --------------------------------------------------------------------------- |
781 // Macro instructions. | 781 // Macro instructions. |
782 | 782 |
783 // Load a register with a long value as efficiently as possible. | 783 // Load a register with a long value as efficiently as possible. |
784 void Set(Register dst, int64_t x); | 784 void Set(Register dst, int64_t x); |
785 void Set(const Operand& dst, int64_t x); | 785 void Set(const Operand& dst, int64_t x); |
786 | 786 |
| 787 // cvtsi2sd instruction only writes to the low 64-bit of dst register, which |
| 788 // hinders register renaming and makes dependence chains longer. So we use |
| 789 // xorps to clear the dst register before cvtsi2sd to solve this issue. |
| 790 void Cvtlsi2sd(XMMRegister dst, Register src); |
| 791 void Cvtlsi2sd(XMMRegister dst, const Operand& src); |
| 792 |
787 // Move if the registers are not identical. | 793 // Move if the registers are not identical. |
788 void Move(Register target, Register source); | 794 void Move(Register target, Register source); |
789 | 795 |
790 // Bit-field support. | 796 // Bit-field support. |
791 void TestBit(const Operand& dst, int bit_index); | 797 void TestBit(const Operand& dst, int bit_index); |
792 | 798 |
793 // Handle support | 799 // Handle support |
794 void Move(Register dst, Handle<Object> source); | 800 void Move(Register dst, Handle<Object> source); |
795 void Move(const Operand& dst, Handle<Object> source); | 801 void Move(const Operand& dst, Handle<Object> source); |
796 void Cmp(Register dst, Handle<Object> source); | 802 void Cmp(Register dst, Handle<Object> source); |
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1564 masm->popfq(); \ | 1570 masm->popfq(); \ |
1565 } \ | 1571 } \ |
1566 masm-> | 1572 masm-> |
1567 #else | 1573 #else |
1568 #define ACCESS_MASM(masm) masm-> | 1574 #define ACCESS_MASM(masm) masm-> |
1569 #endif | 1575 #endif |
1570 | 1576 |
1571 } } // namespace v8::internal | 1577 } } // namespace v8::internal |
1572 | 1578 |
1573 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ | 1579 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ |
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