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Issue 6546036: Combine typed and pixel arrays. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: final version Created 9 years, 9 months ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 1 // Copyright 2010 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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610 private: 610 private:
611 Major MajorKey() { return DirectCEntry; } 611 Major MajorKey() { return DirectCEntry; }
612 int MinorKey() { return 0; } 612 int MinorKey() { return 0; }
613 613
614 bool NeedsImmovableCode() { return true; } 614 bool NeedsImmovableCode() { return true; }
615 615
616 const char* GetName() { return "DirectCEntryStub"; } 616 const char* GetName() { return "DirectCEntryStub"; }
617 }; 617 };
618 618
619 619
620 // Generate code to load an element from a pixel array. The receiver is assumed
621 // to not be a smi and to have elements, the caller must guarantee this
622 // precondition. If key is not a smi, then the generated code branches to
623 // key_not_smi. Callers can specify NULL for key_not_smi to signal that a smi
624 // check has already been performed on key so that the smi check is not
625 // generated. If key is not a valid index within the bounds of the pixel array,
626 // the generated code jumps to out_of_range. receiver, key and elements are
627 // unchanged throughout the generated code sequence.
628 void GenerateFastPixelArrayLoad(MacroAssembler* masm,
629 Register receiver,
630 Register key,
631 Register elements_map,
632 Register elements,
633 Register scratch1,
634 Register scratch2,
635 Register result,
636 Label* not_pixel_array,
637 Label* key_not_smi,
638 Label* out_of_range);
639
640 // Generate code to store an element into a pixel array, clamping values between
641 // [0..255]. The receiver is assumed to not be a smi and to have elements, the
642 // caller must guarantee this precondition. If key is not a smi, then the
643 // generated code branches to key_not_smi. Callers can specify NULL for
644 // key_not_smi to signal that a smi check has already been performed on key so
645 // that the smi check is not generated. If value is not a smi, the generated
646 // code will branch to value_not_smi. If the receiver doesn't have pixel array
647 // elements, the generated code will branch to not_pixel_array, unless
648 // not_pixel_array is NULL, in which case the caller must ensure that the
649 // receiver has pixel array elements. If key is not a valid index within the
650 // bounds of the pixel array, the generated code jumps to out_of_range. If
651 // load_elements_from_receiver is true, then the elements of receiver is loaded
652 // into elements, otherwise elements is assumed to already be the receiver's
653 // elements. If load_elements_map_from_elements is true, elements_map is loaded
654 // from elements, otherwise it is assumed to already contain the element map.
655 void GenerateFastPixelArrayStore(MacroAssembler* masm,
656 Register receiver,
657 Register key,
658 Register value,
659 Register elements,
660 Register elements_map,
661 Register scratch1,
662 Register scratch2,
663 bool load_elements_from_receiver,
664 bool load_elements_map_from_elements,
665 Label* key_not_smi,
666 Label* value_not_smi,
667 Label* not_pixel_array,
668 Label* out_of_range);
669
670 } } // namespace v8::internal 620 } } // namespace v8::internal
671 621
672 #endif // V8_ARM_CODE_STUBS_ARM_H_ 622 #endif // V8_ARM_CODE_STUBS_ARM_H_
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