A64: Synchronize with r16249.

src/a64/lithium-a64.cc

 // Copyright 2013 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 610 matching lines @@
     block->UpdateEnvironment(last_environment);
     ASSERT(pred->argument_count() >= 0);
     argument_count_ = pred->argument_count();
   } else {
     // We are at a state join => process phis.
     HBasicBlock* pred = block->predecessors()->at(0);
     // No need to copy the environment, it cannot be used later.
     HEnvironment* last_environment = pred->last_environment();
     for (int i = 0; i < block->phis()->length(); ++i) {
       HPhi* phi = block->phis()->at(i);
-      if (phi->merged_index() < last_environment->length()) {
+      if (phi->HasMergedIndex()) {
         last_environment->SetValueAt(phi->merged_index(), phi);
       }
     }
     for (int i = 0; i < block->deleted_phis()->length(); ++i) {
       if (block->deleted_phis()->at(i) < last_environment->length()) {
         last_environment->SetValueAt(block->deleted_phis()->at(i),
                                      graph_->GetConstantUndefined());
       }
     }
     block->UpdateEnvironment(last_environment);
@@ skipping 700 matching lines @@
 LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) {
   ASSERT(instr->left()->representation().IsTagged());
   ASSERT(instr->right()->representation().IsTagged());
   LOperand* left = UseFixed(instr->left(), x1);
   LOperand* right = UseFixed(instr->right(), x0);
   LCmpT* result = new(zone()) LCmpT(left, right);
   return MarkAsCall(DefineFixed(result, x0), instr);
 }
 
 
+LInstruction* LChunkBuilder::DoCompareHoleAndBranch(
+    HCompareHoleAndBranch* instr) {
+  LOperand* object = UseRegister(instr->object());
+  if (instr->representation().IsTagged()) {
+    return new(zone()) LCmpHoleAndBranchT(object);
+  } else {
+    LOperand* temp = TempRegister();
+    return new(zone()) LCmpHoleAndBranchD(object, temp);
+  }
+}
+
+
 LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch(
     HCompareObjectEqAndBranch* instr) {
   LOperand* left = UseRegisterAtStart(instr->left());
   LOperand* right = UseRegisterAtStart(instr->right());
   return new(zone()) LCmpObjectEqAndBranch(left, right);
 }
 
 
 LInstruction* LChunkBuilder::DoCompareMap(HCompareMap* instr) {
   ASSERT(instr->value()->representation().IsTagged());
@@ skipping 368 matching lines @@
   return MarkAsCall(result, instr);
 }
 
 
 LInstruction* LChunkBuilder::DoLoadNamedField(HLoadNamedField* instr) {
   LOperand* object = UseRegisterAtStart(instr->object());
   return DefineAsRegister(new(zone()) LLoadNamedField(object));
 }
 
 
-LInstruction* LChunkBuilder::DoLoadNamedFieldPolymorphic(
-    HLoadNamedFieldPolymorphic* instr) {
-  ASSERT(instr->representation().IsTagged());
-  if (instr->need_generic()) {
-    LOperand* obj = UseFixed(instr->object(), x0);
-    LLoadNamedFieldPolymorphic* result =
-        new(zone()) LLoadNamedFieldPolymorphic(obj);
-    return MarkAsCall(DefineFixed(result, x0), instr);
-  } else {
-    LOperand* obj = UseRegister(instr->object());
-    LLoadNamedFieldPolymorphic* result =
-        new(zone()) LLoadNamedFieldPolymorphic(obj);
-    return AssignEnvironment(DefineAsRegister(result));
-  }
-}
-
-
 LInstruction* LChunkBuilder::DoLoadNamedGeneric(HLoadNamedGeneric* instr) {
   LOperand* object = UseFixed(instr->object(), x0);
   LInstruction* result = DefineFixed(new(zone()) LLoadNamedGeneric(object), x0);
   return MarkAsCall(result, instr);
 }
 
 
 LInstruction* LChunkBuilder::DoMapEnumLength(HMapEnumLength* instr) {
   LOperand* map = UseRegisterAtStart(instr->value());
   return DefineAsRegister(new(zone()) LMapEnumLength(map));
@@ skipping 769 matching lines @@
 LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) {
   LOperand* receiver = UseRegister(instr->receiver());
   LOperand* function = UseRegisterAtStart(instr->function());
   LOperand* temp = TempRegister();
   LWrapReceiver* result = new(zone()) LWrapReceiver(receiver, function, temp);
   return AssignEnvironment(DefineAsRegister(result));
 }
 
 
 } }  // namespace v8::internal