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Issue 6794052: Combine the incremental-marking write barrier and the remembered-set... (Closed) Base URL: http://v8.googlecode.com/svn/branches/experimental/gc/
Patch Set: Created 9 years, 8 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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261 Immediate(kTypeAndReadOnlyMask)); 261 Immediate(kTypeAndReadOnlyMask));
262 __ j(not_zero, miss_label, not_taken); 262 __ j(not_zero, miss_label, not_taken);
263 263
264 // Store the value at the masked, scaled index. 264 // Store the value at the masked, scaled index.
265 const int kValueOffset = kElementsStartOffset + kPointerSize; 265 const int kValueOffset = kElementsStartOffset + kPointerSize;
266 __ lea(r0, Operand(elements, r0, times_4, kValueOffset - kHeapObjectTag)); 266 __ lea(r0, Operand(elements, r0, times_4, kValueOffset - kHeapObjectTag));
267 __ mov(Operand(r0, 0), value); 267 __ mov(Operand(r0, 0), value);
268 268
269 // Update write barrier. Make sure not to clobber the value. 269 // Update write barrier. Make sure not to clobber the value.
270 __ mov(r1, value); 270 __ mov(r1, value);
271 __ RecordWrite(elements, r0, r1, kDontSaveFPRegs); 271 __ RecordWrite(elements, r0, r1, EMIT_REMEMBERED_SET, kDontSaveFPRegs);
272 } 272 }
273 273
274 274
275 static void GenerateNumberDictionaryLoad(MacroAssembler* masm, 275 static void GenerateNumberDictionaryLoad(MacroAssembler* masm,
276 Label* miss, 276 Label* miss,
277 Register elements, 277 Register elements,
278 Register key, 278 Register key,
279 Register r0, 279 Register r0,
280 Register r1, 280 Register r1,
281 Register r2, 281 Register r2,
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1752 Condition cc = *jmp_address == Assembler::kJncShortOpcode 1752 Condition cc = *jmp_address == Assembler::kJncShortOpcode
1753 ? not_zero 1753 ? not_zero
1754 : zero; 1754 : zero;
1755 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); 1755 *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc);
1756 } 1756 }
1757 1757
1758 1758
1759 } } // namespace v8::internal 1759 } } // namespace v8::internal
1760 1760
1761 #endif // V8_TARGET_ARCH_IA32 1761 #endif // V8_TARGET_ARCH_IA32
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