OLD | NEW |
1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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 |
(...skipping 877 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
888 __ j(not_equal, &call_runtime); | 888 __ j(not_equal, &call_runtime); |
889 | 889 |
890 // Check that instance descriptors are not empty so that we can | 890 // Check that instance descriptors are not empty so that we can |
891 // check for an enum cache. Leave the map in ebx for the subsequent | 891 // check for an enum cache. Leave the map in ebx for the subsequent |
892 // prototype load. | 892 // prototype load. |
893 __ mov(ebx, FieldOperand(ecx, HeapObject::kMapOffset)); | 893 __ mov(ebx, FieldOperand(ecx, HeapObject::kMapOffset)); |
894 __ mov(edx, FieldOperand(ebx, Map::kInstanceDescriptorsOffset)); | 894 __ mov(edx, FieldOperand(ebx, Map::kInstanceDescriptorsOffset)); |
895 __ cmp(edx, Factory::empty_descriptor_array()); | 895 __ cmp(edx, Factory::empty_descriptor_array()); |
896 __ j(equal, &call_runtime); | 896 __ j(equal, &call_runtime); |
897 | 897 |
898 // Check that there in an enum cache in the non-empty instance | 898 // Check that there is an enum cache in the non-empty instance |
899 // descriptors (edx). This is the case if the next enumeration | 899 // descriptors (edx). This is the case if the next enumeration |
900 // index field does not contain a smi. | 900 // index field does not contain a smi. |
901 __ mov(edx, FieldOperand(edx, DescriptorArray::kEnumerationIndexOffset)); | 901 __ mov(edx, FieldOperand(edx, DescriptorArray::kEnumerationIndexOffset)); |
902 __ test(edx, Immediate(kSmiTagMask)); | 902 __ test(edx, Immediate(kSmiTagMask)); |
903 __ j(zero, &call_runtime); | 903 __ j(zero, &call_runtime); |
904 | 904 |
905 // For all objects but the receiver, check that the cache is empty. | 905 // For all objects but the receiver, check that the cache is empty. |
906 NearLabel check_prototype; | 906 NearLabel check_prototype; |
907 __ cmp(ecx, Operand(eax)); | 907 __ cmp(ecx, Operand(eax)); |
908 __ j(equal, &check_prototype); | 908 __ j(equal, &check_prototype); |
(...skipping 3526 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
4435 // And return. | 4435 // And return. |
4436 __ ret(0); | 4436 __ ret(0); |
4437 } | 4437 } |
4438 | 4438 |
4439 | 4439 |
4440 #undef __ | 4440 #undef __ |
4441 | 4441 |
4442 } } // namespace v8::internal | 4442 } } // namespace v8::internal |
4443 | 4443 |
4444 #endif // V8_TARGET_ARCH_IA32 | 4444 #endif // V8_TARGET_ARCH_IA32 |
OLD | NEW |