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Issue 260003006: Added a Isolate* parameter to Serializer::enabled(). (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 7 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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866 // Make sure that the lithium instruction has either no fixed register 866 // Make sure that the lithium instruction has either no fixed register
867 // constraints in temps or the result OR no uses that are only used at 867 // constraints in temps or the result OR no uses that are only used at
868 // start. If this invariant doesn't hold, the register allocator can decide 868 // start. If this invariant doesn't hold, the register allocator can decide
869 // to insert a split of a range immediately before the instruction due to an 869 // to insert a split of a range immediately before the instruction due to an
870 // already allocated register needing to be used for the instruction's fixed 870 // already allocated register needing to be used for the instruction's fixed
871 // register constraint. In this case, The register allocator won't see an 871 // register constraint. In this case, The register allocator won't see an
872 // interference between the split child and the use-at-start (it would if 872 // interference between the split child and the use-at-start (it would if
873 // the it was just a plain use), so it is free to move the split child into 873 // the it was just a plain use), so it is free to move the split child into
874 // the same register that is used for the use-at-start. 874 // the same register that is used for the use-at-start.
875 // See https://code.google.com/p/chromium/issues/detail?id=201590 875 // See https://code.google.com/p/chromium/issues/detail?id=201590
876 if (!(instr->ClobbersRegisters() && instr->ClobbersDoubleRegisters())) { 876 if (!(instr->ClobbersRegisters() &&
877 instr->ClobbersDoubleRegisters(isolate()))) {
877 int fixed = 0; 878 int fixed = 0;
878 int used_at_start = 0; 879 int used_at_start = 0;
879 for (UseIterator it(instr); !it.Done(); it.Advance()) { 880 for (UseIterator it(instr); !it.Done(); it.Advance()) {
880 LUnallocated* operand = LUnallocated::cast(it.Current()); 881 LUnallocated* operand = LUnallocated::cast(it.Current());
881 if (operand->IsUsedAtStart()) ++used_at_start; 882 if (operand->IsUsedAtStart()) ++used_at_start;
882 } 883 }
883 if (instr->Output() != NULL) { 884 if (instr->Output() != NULL) {
884 if (LUnallocated::cast(instr->Output())->HasFixedPolicy()) ++fixed; 885 if (LUnallocated::cast(instr->Output())->HasFixedPolicy()) ++fixed;
885 } 886 }
886 for (TempIterator it(instr); !it.Done(); it.Advance()) { 887 for (TempIterator it(instr); !it.Done(); it.Advance()) {
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2581 2582
2582 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { 2583 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) {
2583 LOperand* object = UseRegister(instr->object()); 2584 LOperand* object = UseRegister(instr->object());
2584 LOperand* index = UseRegister(instr->index()); 2585 LOperand* index = UseRegister(instr->index());
2585 LLoadFieldByIndex* load = new(zone()) LLoadFieldByIndex(object, index); 2586 LLoadFieldByIndex* load = new(zone()) LLoadFieldByIndex(object, index);
2586 LInstruction* result = DefineSameAsFirst(load); 2587 LInstruction* result = DefineSameAsFirst(load);
2587 return AssignPointerMap(result); 2588 return AssignPointerMap(result);
2588 } 2589 }
2589 2590
2590 } } // namespace v8::internal 2591 } } // namespace v8::internal
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