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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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731 if (check_map == kCheckMap) { | 731 if (check_map == kCheckMap) { |
732 __ mov(edi, FieldOperand(ebx, HeapObject::kMapOffset)); | 732 __ mov(edi, FieldOperand(ebx, HeapObject::kMapOffset)); |
733 __ cmp(edi, masm->isolate()->factory()->fixed_array_map()); | 733 __ cmp(edi, masm->isolate()->factory()->fixed_array_map()); |
734 __ j(not_equal, fast_double); | 734 __ j(not_equal, fast_double); |
735 } | 735 } |
736 | 736 |
737 // HOLECHECK: guards "A[i] = V" | 737 // HOLECHECK: guards "A[i] = V" |
738 // We have to go to the runtime if the current value is the hole because | 738 // We have to go to the runtime if the current value is the hole because |
739 // there may be a callback on the element | 739 // there may be a callback on the element |
740 Label holecheck_passed1; | 740 Label holecheck_passed1; |
741 __ cmp(CodeGenerator::FixedArrayElementOperand(ebx, ecx), | 741 __ cmp(FixedArrayElementOperand(ebx, ecx), |
742 masm->isolate()->factory()->the_hole_value()); | 742 masm->isolate()->factory()->the_hole_value()); |
743 __ j(not_equal, &holecheck_passed1); | 743 __ j(not_equal, &holecheck_passed1); |
744 __ JumpIfDictionaryInPrototypeChain(edx, ebx, edi, slow); | 744 __ JumpIfDictionaryInPrototypeChain(edx, ebx, edi, slow); |
745 __ mov(ebx, FieldOperand(edx, JSObject::kElementsOffset)); | 745 __ mov(ebx, FieldOperand(edx, JSObject::kElementsOffset)); |
746 | 746 |
747 __ bind(&holecheck_passed1); | 747 __ bind(&holecheck_passed1); |
748 | 748 |
749 // Smi stores don't require further checks. | 749 // Smi stores don't require further checks. |
750 Label non_smi_value; | 750 Label non_smi_value; |
751 __ JumpIfNotSmi(eax, &non_smi_value); | 751 __ JumpIfNotSmi(eax, &non_smi_value); |
752 if (increment_length == kIncrementLength) { | 752 if (increment_length == kIncrementLength) { |
753 // Add 1 to receiver->length. | 753 // Add 1 to receiver->length. |
754 __ add(FieldOperand(edx, JSArray::kLengthOffset), | 754 __ add(FieldOperand(edx, JSArray::kLengthOffset), |
755 Immediate(Smi::FromInt(1))); | 755 Immediate(Smi::FromInt(1))); |
756 } | 756 } |
757 // It's irrelevant whether array is smi-only or not when writing a smi. | 757 // It's irrelevant whether array is smi-only or not when writing a smi. |
758 __ mov(CodeGenerator::FixedArrayElementOperand(ebx, ecx), eax); | 758 __ mov(FixedArrayElementOperand(ebx, ecx), eax); |
759 __ ret(0); | 759 __ ret(0); |
760 | 760 |
761 __ bind(&non_smi_value); | 761 __ bind(&non_smi_value); |
762 // Escape to elements kind transition case. | 762 // Escape to elements kind transition case. |
763 __ mov(edi, FieldOperand(edx, HeapObject::kMapOffset)); | 763 __ mov(edi, FieldOperand(edx, HeapObject::kMapOffset)); |
764 __ CheckFastObjectElements(edi, &transition_smi_elements); | 764 __ CheckFastObjectElements(edi, &transition_smi_elements); |
765 | 765 |
766 // Fast elements array, store the value to the elements backing store. | 766 // Fast elements array, store the value to the elements backing store. |
767 __ bind(&finish_object_store); | 767 __ bind(&finish_object_store); |
768 if (increment_length == kIncrementLength) { | 768 if (increment_length == kIncrementLength) { |
769 // Add 1 to receiver->length. | 769 // Add 1 to receiver->length. |
770 __ add(FieldOperand(edx, JSArray::kLengthOffset), | 770 __ add(FieldOperand(edx, JSArray::kLengthOffset), |
771 Immediate(Smi::FromInt(1))); | 771 Immediate(Smi::FromInt(1))); |
772 } | 772 } |
773 __ mov(CodeGenerator::FixedArrayElementOperand(ebx, ecx), eax); | 773 __ mov(FixedArrayElementOperand(ebx, ecx), eax); |
774 // Update write barrier for the elements array address. | 774 // Update write barrier for the elements array address. |
775 __ mov(edx, eax); // Preserve the value which is returned. | 775 __ mov(edx, eax); // Preserve the value which is returned. |
776 __ RecordWriteArray( | 776 __ RecordWriteArray( |
777 ebx, edx, ecx, kDontSaveFPRegs, EMIT_REMEMBERED_SET, OMIT_SMI_CHECK); | 777 ebx, edx, ecx, kDontSaveFPRegs, EMIT_REMEMBERED_SET, OMIT_SMI_CHECK); |
778 __ ret(0); | 778 __ ret(0); |
779 | 779 |
780 __ bind(fast_double); | 780 __ bind(fast_double); |
781 if (check_map == kCheckMap) { | 781 if (check_map == kCheckMap) { |
782 // Check for fast double array case. If this fails, call through to the | 782 // Check for fast double array case. If this fails, call through to the |
783 // runtime. | 783 // runtime. |
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1306 Condition cc = (check == ENABLE_INLINED_SMI_CHECK) | 1306 Condition cc = (check == ENABLE_INLINED_SMI_CHECK) |
1307 ? (*jmp_address == Assembler::kJncShortOpcode ? not_zero : zero) | 1307 ? (*jmp_address == Assembler::kJncShortOpcode ? not_zero : zero) |
1308 : (*jmp_address == Assembler::kJnzShortOpcode ? not_carry : carry); | 1308 : (*jmp_address == Assembler::kJnzShortOpcode ? not_carry : carry); |
1309 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); | 1309 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); |
1310 } | 1310 } |
1311 | 1311 |
1312 | 1312 |
1313 } } // namespace v8::internal | 1313 } } // namespace v8::internal |
1314 | 1314 |
1315 #endif // V8_TARGET_ARCH_IA32 | 1315 #endif // V8_TARGET_ARCH_IA32 |
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