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Issue 22715004: Version 3.20.15 (Closed) Base URL: https://v8.googlecode.com/svn/trunk
Patch Set: Add TypedArray API and correctness patches r16033 and r16084 Created 7 years, 4 months ago
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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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476 // cache. Otherwise probe the dictionary. 476 // cache. Otherwise probe the dictionary.
477 __ mov(ebx, FieldOperand(edx, JSObject::kPropertiesOffset)); 477 __ mov(ebx, FieldOperand(edx, JSObject::kPropertiesOffset));
478 __ cmp(FieldOperand(ebx, HeapObject::kMapOffset), 478 __ cmp(FieldOperand(ebx, HeapObject::kMapOffset),
479 Immediate(isolate->factory()->hash_table_map())); 479 Immediate(isolate->factory()->hash_table_map()));
480 __ j(equal, &probe_dictionary); 480 __ j(equal, &probe_dictionary);
481 481
482 // The receiver's map is still in eax, compute the keyed lookup cache hash 482 // The receiver's map is still in eax, compute the keyed lookup cache hash
483 // based on 32 bits of the map pointer and the string hash. 483 // based on 32 bits of the map pointer and the string hash.
484 if (FLAG_debug_code) { 484 if (FLAG_debug_code) {
485 __ cmp(eax, FieldOperand(edx, HeapObject::kMapOffset)); 485 __ cmp(eax, FieldOperand(edx, HeapObject::kMapOffset));
486 __ Check(equal, kMapIsNoLongerInEax); 486 __ Check(equal, "Map is no longer in eax.");
487 } 487 }
488 __ mov(ebx, eax); // Keep the map around for later. 488 __ mov(ebx, eax); // Keep the map around for later.
489 __ shr(eax, KeyedLookupCache::kMapHashShift); 489 __ shr(eax, KeyedLookupCache::kMapHashShift);
490 __ mov(edi, FieldOperand(ecx, String::kHashFieldOffset)); 490 __ mov(edi, FieldOperand(ecx, String::kHashFieldOffset));
491 __ shr(edi, String::kHashShift); 491 __ shr(edi, String::kHashShift);
492 __ xor_(eax, edi); 492 __ xor_(eax, edi);
493 __ and_(eax, KeyedLookupCache::kCapacityMask & KeyedLookupCache::kHashMask); 493 __ and_(eax, KeyedLookupCache::kCapacityMask & KeyedLookupCache::kHashMask);
494 494
495 // Load the key (consisting of map and internalized string) from the cache and 495 // Load the key (consisting of map and internalized string) from the cache and
496 // check for match. 496 // check for match.
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1658 Condition cc = (check == ENABLE_INLINED_SMI_CHECK) 1658 Condition cc = (check == ENABLE_INLINED_SMI_CHECK)
1659 ? (*jmp_address == Assembler::kJncShortOpcode ? not_zero : zero) 1659 ? (*jmp_address == Assembler::kJncShortOpcode ? not_zero : zero)
1660 : (*jmp_address == Assembler::kJnzShortOpcode ? not_carry : carry); 1660 : (*jmp_address == Assembler::kJnzShortOpcode ? not_carry : carry);
1661 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); 1661 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc);
1662 } 1662 }
1663 1663
1664 1664
1665 } } // namespace v8::internal 1665 } } // namespace v8::internal
1666 1666
1667 #endif // V8_TARGET_ARCH_IA32 1667 #endif // V8_TARGET_ARCH_IA32
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