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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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738 | 738 |
739 void LAllocator::AddConstraintsGapMove(int index, | 739 void LAllocator::AddConstraintsGapMove(int index, |
740 LOperand* from, | 740 LOperand* from, |
741 LOperand* to) { | 741 LOperand* to) { |
742 LGap* gap = chunk_->GetGapAt(index); | 742 LGap* gap = chunk_->GetGapAt(index); |
743 LParallelMove* move = gap->GetOrCreateParallelMove(LGap::START); | 743 LParallelMove* move = gap->GetOrCreateParallelMove(LGap::START); |
744 if (from->IsUnallocated()) { | 744 if (from->IsUnallocated()) { |
745 const ZoneList<LMoveOperands>* move_operands = move->move_operands(); | 745 const ZoneList<LMoveOperands>* move_operands = move->move_operands(); |
746 for (int i = 0; i < move_operands->length(); ++i) { | 746 for (int i = 0; i < move_operands->length(); ++i) { |
747 LMoveOperands cur = move_operands->at(i); | 747 LMoveOperands cur = move_operands->at(i); |
748 LOperand* cur_to = cur.to(); | 748 LOperand* cur_to = cur.destination(); |
749 if (cur_to->IsUnallocated()) { | 749 if (cur_to->IsUnallocated()) { |
750 if (cur_to->VirtualRegister() == from->VirtualRegister()) { | 750 if (cur_to->VirtualRegister() == from->VirtualRegister()) { |
751 move->AddMove(cur.from(), to); | 751 move->AddMove(cur.source(), to); |
752 return; | 752 return; |
753 } | 753 } |
754 } | 754 } |
755 } | 755 } |
756 } | 756 } |
757 move->AddMove(from, to); | 757 move->AddMove(from, to); |
758 } | 758 } |
759 | 759 |
760 | 760 |
761 void LAllocator::MeetRegisterConstraints(HBasicBlock* block) { | 761 void LAllocator::MeetRegisterConstraints(HBasicBlock* block) { |
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889 LifetimePosition::FromInstructionIndex(index); | 889 LifetimePosition::FromInstructionIndex(index); |
890 | 890 |
891 if (chunk_->IsGapAt(index)) { | 891 if (chunk_->IsGapAt(index)) { |
892 // We have a gap at this position. | 892 // We have a gap at this position. |
893 LGap* gap = chunk_->GetGapAt(index); | 893 LGap* gap = chunk_->GetGapAt(index); |
894 LParallelMove* move = gap->GetOrCreateParallelMove(LGap::START); | 894 LParallelMove* move = gap->GetOrCreateParallelMove(LGap::START); |
895 const ZoneList<LMoveOperands>* move_operands = move->move_operands(); | 895 const ZoneList<LMoveOperands>* move_operands = move->move_operands(); |
896 for (int i = 0; i < move_operands->length(); ++i) { | 896 for (int i = 0; i < move_operands->length(); ++i) { |
897 LMoveOperands* cur = &move_operands->at(i); | 897 LMoveOperands* cur = &move_operands->at(i); |
898 if (cur->IsIgnored()) continue; | 898 if (cur->IsIgnored()) continue; |
899 LOperand* from = cur->from(); | 899 LOperand* from = cur->source(); |
900 LOperand* to = cur->to(); | 900 LOperand* to = cur->destination(); |
901 HPhi* phi = LookupPhi(to); | 901 HPhi* phi = LookupPhi(to); |
902 LOperand* hint = to; | 902 LOperand* hint = to; |
903 if (phi != NULL) { | 903 if (phi != NULL) { |
904 // This is a phi resolving move. | 904 // This is a phi resolving move. |
905 if (!phi->block()->IsLoopHeader()) { | 905 if (!phi->block()->IsLoopHeader()) { |
906 hint = LiveRangeFor(phi->id())->FirstHint(); | 906 hint = LiveRangeFor(phi->id())->FirstHint(); |
907 } | 907 } |
908 } else { | 908 } else { |
909 if (to->IsUnallocated()) { | 909 if (to->IsUnallocated()) { |
910 if (live->Contains(to->VirtualRegister())) { | 910 if (live->Contains(to->VirtualRegister())) { |
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1210 // The live range interval already ends at the first instruction of the | 1210 // The live range interval already ends at the first instruction of the |
1211 // block. | 1211 // block. |
1212 HPhi* phi = phis->at(i); | 1212 HPhi* phi = phis->at(i); |
1213 live->Remove(phi->id()); | 1213 live->Remove(phi->id()); |
1214 | 1214 |
1215 LOperand* hint = NULL; | 1215 LOperand* hint = NULL; |
1216 LOperand* phi_operand = NULL; | 1216 LOperand* phi_operand = NULL; |
1217 LGap* gap = GetLastGap(phi->block()->predecessors()->at(0)); | 1217 LGap* gap = GetLastGap(phi->block()->predecessors()->at(0)); |
1218 LParallelMove* move = gap->GetOrCreateParallelMove(LGap::START); | 1218 LParallelMove* move = gap->GetOrCreateParallelMove(LGap::START); |
1219 for (int j = 0; j < move->move_operands()->length(); ++j) { | 1219 for (int j = 0; j < move->move_operands()->length(); ++j) { |
1220 LOperand* to = move->move_operands()->at(j).to(); | 1220 LOperand* to = move->move_operands()->at(j).destination(); |
1221 if (to->IsUnallocated() && to->VirtualRegister() == phi->id()) { | 1221 if (to->IsUnallocated() && to->VirtualRegister() == phi->id()) { |
1222 hint = move->move_operands()->at(j).from(); | 1222 hint = move->move_operands()->at(j).source(); |
1223 phi_operand = to; | 1223 phi_operand = to; |
1224 break; | 1224 break; |
1225 } | 1225 } |
1226 } | 1226 } |
1227 ASSERT(hint != NULL); | 1227 ASSERT(hint != NULL); |
1228 | 1228 |
1229 LifetimePosition block_start = LifetimePosition::FromInstructionIndex( | 1229 LifetimePosition block_start = LifetimePosition::FromInstructionIndex( |
1230 block->first_instruction_index()); | 1230 block->first_instruction_index()); |
1231 Define(block_start, phi_operand, hint); | 1231 Define(block_start, phi_operand, hint); |
1232 } | 1232 } |
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2148 LiveRange* current = live_ranges()->at(i); | 2148 LiveRange* current = live_ranges()->at(i); |
2149 if (current != NULL) current->Verify(); | 2149 if (current != NULL) current->Verify(); |
2150 } | 2150 } |
2151 } | 2151 } |
2152 | 2152 |
2153 | 2153 |
2154 #endif | 2154 #endif |
2155 | 2155 |
2156 | 2156 |
2157 } } // namespace v8::internal | 2157 } } // namespace v8::internal |
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