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Issue 6321012: Version 3.0.9... (Closed) Base URL: http://v8.googlecode.com/svn/trunk/
Patch Set: Created 9 years, 11 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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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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