Change the algorithm and generated code for parallel moves on IA32.

src/lithium-allocator.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 727 matching lines @@
 
 void LAllocator::AddConstraintsGapMove(int index,
                                        LOperand* from,
                                        LOperand* to) {
   LGap* gap = chunk_->GetGapAt(index);
   LParallelMove* move = gap->GetOrCreateParallelMove(LGap::START);
   if (from->IsUnallocated()) {
     const ZoneList<LMoveOperands>* move_operands = move->move_operands();
     for (int i = 0; i < move_operands->length(); ++i) {
       LMoveOperands cur = move_operands->at(i);
-      LOperand* cur_to = cur.to();
+      LOperand* cur_to = cur.destination();
       if (cur_to->IsUnallocated()) {
         if (cur_to->VirtualRegister() == from->VirtualRegister()) {
-          move->AddMove(cur.from(), to);
+          move->AddMove(cur.source(), to);
           return;
         }
       }
     }
   }
   move->AddMove(from, to);
 }
 
 
 void LAllocator::MeetRegisterConstraints(HBasicBlock* block) {
@@ skipping 124 matching lines @@
         LifetimePosition::FromInstructionIndex(index);
 
     if (chunk_->IsGapAt(index)) {
       // We have a gap at this position.
       LGap* gap = chunk_->GetGapAt(index);
       LParallelMove* move = gap->GetOrCreateParallelMove(LGap::START);
       const ZoneList<LMoveOperands>* move_operands = move->move_operands();
       for (int i = 0; i < move_operands->length(); ++i) {
         LMoveOperands* cur = &move_operands->at(i);
         if (cur->IsIgnored()) continue;
-        LOperand* from = cur->from();
-        LOperand* to = cur->to();
+        LOperand* from = cur->source();
+        LOperand* to = cur->destination();
         HPhi* phi = LookupPhi(to);
         LOperand* hint = to;
         if (phi != NULL) {
           // This is a phi resolving move.
           if (!phi->block()->IsLoopHeader()) {
             hint = LiveRangeFor(phi->id())->FirstHint();
           }
         } else {
           if (to->IsUnallocated()) {
             if (live->Contains(to->VirtualRegister())) {
@@ skipping 299 matching lines @@
       // The live range interval already ends at the first instruction of the
       // block.
       HPhi* phi = phis->at(i);
       live->Remove(phi->id());
 
       LOperand* hint = NULL;
       LOperand* phi_operand = NULL;
       LGap* gap = GetLastGap(phi->block()->predecessors()->at(0));
       LParallelMove* move = gap->GetOrCreateParallelMove(LGap::START);
       for (int j = 0; j < move->move_operands()->length(); ++j) {
-        LOperand* to = move->move_operands()->at(j).to();
+        LOperand* to = move->move_operands()->at(j).destination();
         if (to->IsUnallocated() && to->VirtualRegister() == phi->id()) {
-          hint = move->move_operands()->at(j).from();
+          hint = move->move_operands()->at(j).source();
           phi_operand = to;
           break;
         }
       }
       ASSERT(hint != NULL);
 
       LifetimePosition block_start = LifetimePosition::FromInstructionIndex(
               block->first_instruction_index());
       Define(block_start, phi_operand, hint);
     }
@@ skipping 915 matching lines @@
     LiveRange* current = live_ranges()->at(i);
     if (current != NULL) current->Verify();
   }
 }
 
 
 #endif
 
 
 } }  // namespace v8::internal