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Issue 22582002: MIPS: Refactor and improve inlined double-aligned allocations (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: 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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198 __ Branch(&only_change_map, eq, at, Operand(t0)); 198 __ Branch(&only_change_map, eq, at, Operand(t0));
199 199
200 __ push(ra); 200 __ push(ra);
201 __ lw(t1, FieldMemOperand(t0, FixedArray::kLengthOffset)); 201 __ lw(t1, FieldMemOperand(t0, FixedArray::kLengthOffset));
202 // t0: source FixedArray 202 // t0: source FixedArray
203 // t1: number of elements (smi-tagged) 203 // t1: number of elements (smi-tagged)
204 204
205 // Allocate new FixedDoubleArray. 205 // Allocate new FixedDoubleArray.
206 __ sll(scratch, t1, 2); 206 __ sll(scratch, t1, 2);
207 __ Addu(scratch, scratch, FixedDoubleArray::kHeaderSize); 207 __ Addu(scratch, scratch, FixedDoubleArray::kHeaderSize);
208 __ Allocate(scratch, t2, t3, t5, &gc_required, NO_ALLOCATION_FLAGS); 208 __ Allocate(scratch, t2, t3, t5, &gc_required, DOUBLE_ALIGNMENT);
209 // t2: destination FixedDoubleArray, not tagged as heap object 209 // t2: destination FixedDoubleArray, not tagged as heap object
210 210
211 // Set destination FixedDoubleArray's length and map. 211 // Set destination FixedDoubleArray's length and map.
212 __ LoadRoot(t5, Heap::kFixedDoubleArrayMapRootIndex); 212 __ LoadRoot(t5, Heap::kFixedDoubleArrayMapRootIndex);
213 __ sw(t1, MemOperand(t2, FixedDoubleArray::kLengthOffset)); 213 __ sw(t1, MemOperand(t2, FixedDoubleArray::kLengthOffset));
214 __ sw(t5, MemOperand(t2, HeapObject::kMapOffset)); 214 __ sw(t5, MemOperand(t2, HeapObject::kMapOffset));
215 // Update receiver's map. 215 // Update receiver's map.
216 216
217 __ sw(a3, FieldMemOperand(a2, HeapObject::kMapOffset)); 217 __ sw(a3, FieldMemOperand(a2, HeapObject::kMapOffset));
218 __ RecordWriteField(a2, 218 __ RecordWriteField(a2,
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659 patcher.masm()->dd(reinterpret_cast<uint32_t>(stub->instruction_start())); 659 patcher.masm()->dd(reinterpret_cast<uint32_t>(stub->instruction_start()));
660 } 660 }
661 } 661 }
662 662
663 663
664 #undef __ 664 #undef __
665 665
666 } } // namespace v8::internal 666 } } // namespace v8::internal
667 667
668 #endif // V8_TARGET_ARCH_MIPS 668 #endif // V8_TARGET_ARCH_MIPS
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