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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 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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439 StaticType* type, | 439 StaticType* type, |
440 OverwriteMode overwrite_mode); | 440 OverwriteMode overwrite_mode); |
441 | 441 |
442 // If possible, combine two constant smi values using op to produce | 442 // If possible, combine two constant smi values using op to produce |
443 // a smi result, and push it on the virtual frame, all at compile time. | 443 // a smi result, and push it on the virtual frame, all at compile time. |
444 // Returns true if it succeeds. Otherwise it has no effect. | 444 // Returns true if it succeeds. Otherwise it has no effect. |
445 bool FoldConstantSmis(Token::Value op, int left, int right); | 445 bool FoldConstantSmis(Token::Value op, int left, int right); |
446 | 446 |
447 // Emit code to perform a binary operation on a constant | 447 // Emit code to perform a binary operation on a constant |
448 // smi and a likely smi. Consumes the Result *operand. | 448 // smi and a likely smi. Consumes the Result *operand. |
449 void ConstantSmiBinaryOperation(Token::Value op, | 449 Result ConstantSmiBinaryOperation(Token::Value op, |
450 Result* operand, | 450 Result* operand, |
451 Handle<Object> constant_operand, | 451 Handle<Object> constant_operand, |
452 StaticType* type, | 452 StaticType* type, |
453 bool reversed, | 453 bool reversed, |
454 OverwriteMode overwrite_mode); | 454 OverwriteMode overwrite_mode); |
455 | 455 |
456 // Emit code to perform a binary operation on two likely smis. | 456 // Emit code to perform a binary operation on two likely smis. |
457 // The code to handle smi arguments is produced inline. | 457 // The code to handle smi arguments is produced inline. |
458 // Consumes the Results *left and *right. | 458 // Consumes the Results *left and *right. |
459 void LikelySmiBinaryOperation(Token::Value op, | 459 Result LikelySmiBinaryOperation(Token::Value op, |
460 Result* left, | 460 Result* left, |
461 Result* right, | 461 Result* right, |
462 OverwriteMode overwrite_mode); | 462 OverwriteMode overwrite_mode); |
463 | 463 |
464 void Comparison(Condition cc, | 464 void Comparison(Condition cc, |
465 bool strict, | 465 bool strict, |
466 ControlDestination* destination); | 466 ControlDestination* destination); |
467 | 467 |
468 // To prevent long attacker-controlled byte sequences, integer constants | 468 // To prevent long attacker-controlled byte sequences, integer constants |
469 // from the JavaScript source are loaded in two parts if they are larger | 469 // from the JavaScript source are loaded in two parts if they are larger |
470 // than 16 bits. | 470 // than 16 bits. |
471 static const int kMaxSmiInlinedBits = 16; | 471 static const int kMaxSmiInlinedBits = 16; |
472 bool IsUnsafeSmi(Handle<Object> value); | 472 bool IsUnsafeSmi(Handle<Object> value); |
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761 Major MajorKey() { return StringCompare; } | 761 Major MajorKey() { return StringCompare; } |
762 int MinorKey() { return 0; } | 762 int MinorKey() { return 0; } |
763 | 763 |
764 void Generate(MacroAssembler* masm); | 764 void Generate(MacroAssembler* masm); |
765 }; | 765 }; |
766 | 766 |
767 | 767 |
768 } } // namespace v8::internal | 768 } } // namespace v8::internal |
769 | 769 |
770 #endif // V8_X64_CODEGEN_X64_H_ | 770 #endif // V8_X64_CODEGEN_X64_H_ |
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