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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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549 edx, | 549 edx, |
550 eax, | 550 eax, |
551 ecx, | 551 ecx, |
552 eax, | 552 eax, |
553 NULL, | 553 NULL, |
554 &slow); | 554 &slow); |
555 __ IncrementCounter(&Counters::keyed_load_generic_smi, 1); | 555 __ IncrementCounter(&Counters::keyed_load_generic_smi, 1); |
556 __ ret(0); | 556 __ ret(0); |
557 | 557 |
558 __ bind(&check_pixel_array); | 558 __ bind(&check_pixel_array); |
559 // Check whether the elements is a pixel array. | 559 GenerateFastPixelArrayLoad(masm, |
560 // edx: receiver | 560 edx, |
561 // eax: key | 561 eax, |
562 __ mov(ecx, FieldOperand(edx, JSObject::kElementsOffset)); | 562 ecx, |
563 __ mov(ebx, eax); | 563 ebx, |
564 __ SmiUntag(ebx); | 564 eax, |
565 __ CheckMap(ecx, Factory::pixel_array_map(), &check_number_dictionary, true); | 565 &check_number_dictionary, |
566 __ cmp(ebx, FieldOperand(ecx, PixelArray::kLengthOffset)); | 566 NULL, |
567 __ j(above_equal, &slow); | 567 &slow); |
568 __ mov(eax, FieldOperand(ecx, PixelArray::kExternalPointerOffset)); | |
569 __ movzx_b(eax, Operand(eax, ebx, times_1, 0)); | |
570 __ SmiTag(eax); | |
571 __ ret(0); | |
572 | 568 |
573 __ bind(&check_number_dictionary); | 569 __ bind(&check_number_dictionary); |
574 // Check whether the elements is a number dictionary. | 570 // Check whether the elements is a number dictionary. |
575 // edx: receiver | 571 // edx: receiver |
576 // ebx: untagged index | 572 // ebx: untagged index |
577 // eax: key | 573 // eax: key |
578 // ecx: elements | 574 // ecx: elements |
579 __ CheckMap(ecx, Factory::hash_table_map(), &slow, true); | 575 __ CheckMap(ecx, Factory::hash_table_map(), &slow, true); |
580 Label slow_pop_receiver; | 576 Label slow_pop_receiver; |
581 // Push receiver on the stack to free up a register for the dictionary | 577 // Push receiver on the stack to free up a register for the dictionary |
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1773 Condition cc = *jmp_address == Assembler::kJncShortOpcode | 1769 Condition cc = *jmp_address == Assembler::kJncShortOpcode |
1774 ? not_zero | 1770 ? not_zero |
1775 : zero; | 1771 : zero; |
1776 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); | 1772 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); |
1777 } | 1773 } |
1778 | 1774 |
1779 | 1775 |
1780 } } // namespace v8::internal | 1776 } } // namespace v8::internal |
1781 | 1777 |
1782 #endif // V8_TARGET_ARCH_IA32 | 1778 #endif // V8_TARGET_ARCH_IA32 |
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