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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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525 // Jump if either or both register are not non-negative smi values. | 525 // Jump if either or both register are not non-negative smi values. |
526 void JumpUnlessBothNonNegativeSmi(Register src1, Register src2, | 526 void JumpUnlessBothNonNegativeSmi(Register src1, Register src2, |
527 Label* on_not_both_smi, | 527 Label* on_not_both_smi, |
528 Label::Distance near_jump = Label::kFar); | 528 Label::Distance near_jump = Label::kFar); |
529 | 529 |
530 // Operations on tagged smi values. | 530 // Operations on tagged smi values. |
531 | 531 |
532 // Smis represent a subset of integers. The subset is always equivalent to | 532 // Smis represent a subset of integers. The subset is always equivalent to |
533 // a two's complement interpretation of a fixed number of bits. | 533 // a two's complement interpretation of a fixed number of bits. |
534 | 534 |
535 // Optimistically adds an integer constant to a supposed smi. | |
536 // If the src is not a smi, or the result is not a smi, jump to | |
537 // the label. | |
538 void SmiTryAddConstant(Register dst, | |
539 Register src, | |
540 Smi* constant, | |
541 Label* on_not_smi_result, | |
542 Label::Distance near_jump = Label::kFar); | |
543 | |
544 // Add an integer constant to a tagged smi, giving a tagged smi as result. | 535 // Add an integer constant to a tagged smi, giving a tagged smi as result. |
545 // No overflow testing on the result is done. | 536 // No overflow testing on the result is done. |
546 void SmiAddConstant(Register dst, Register src, Smi* constant); | 537 void SmiAddConstant(Register dst, Register src, Smi* constant); |
547 | 538 |
548 // Add an integer constant to a tagged smi, giving a tagged smi as result. | 539 // Add an integer constant to a tagged smi, giving a tagged smi as result. |
549 // No overflow testing on the result is done. | 540 // No overflow testing on the result is done. |
550 void SmiAddConstant(const Operand& dst, Smi* constant); | 541 void SmiAddConstant(const Operand& dst, Smi* constant); |
551 | 542 |
552 // Add an integer constant to a tagged smi, giving a tagged smi as result, | 543 // Add an integer constant to a tagged smi, giving a tagged smi as result, |
553 // or jumping to a label if the result cannot be represented by a smi. | 544 // or jumping to a label if the result cannot be represented by a smi. |
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1581 masm->popfq(); \ | 1572 masm->popfq(); \ |
1582 } \ | 1573 } \ |
1583 masm-> | 1574 masm-> |
1584 #else | 1575 #else |
1585 #define ACCESS_MASM(masm) masm-> | 1576 #define ACCESS_MASM(masm) masm-> |
1586 #endif | 1577 #endif |
1587 | 1578 |
1588 } } // namespace v8::internal | 1579 } } // namespace v8::internal |
1589 | 1580 |
1590 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ | 1581 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ |
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