Deprecte LoweringBuilder in favor of Reducer.

src/compiler/simplified-lowering.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/simplified-lowering.h"
 
 #include <deque>
 #include <queue>
 
 #include "src/compiler/common-operator.h"
@@ skipping 701 matching lines @@
 }
 
 
 void SimplifiedLowering::LowerAllNodes() {
   SimplifiedOperatorBuilder simplified(graph()->zone());
   RepresentationChanger changer(jsgraph(), &simplified, machine(),
                                 graph()->zone()->isolate());
   RepresentationSelector selector(jsgraph(), zone(), &changer);
   selector.Run(this);
 
-  LoweringBuilder::LowerAllNodes();
+  GraphReducer graph_reducer(graph());
+  graph_reducer.AddReducer(this);
+  graph_reducer.ReduceGraph();
 }
 
 
 Node* SimplifiedLowering::Untag(Node* node) {
   // TODO(titzer): factor this out to a TaggingScheme abstraction.
   Node* shift_amount = jsgraph()->Int32Constant(kSmiTagSize + kSmiShiftSize);
   return graph()->NewNode(machine()->WordSar(), node, shift_amount);
 }
 
 
@@ skipping 234 matching lines @@
 
 void SimplifiedLowering::DoStoreElement(Node* node) {
   const ElementAccess& access = ElementAccessOf(node->op());
   WriteBarrierKind kind = ComputeWriteBarrierKind(
       access.base_is_tagged, access.representation, access.type);
   node->set_op(machine_.Store(access.representation, kind));
   node->ReplaceInput(1, ComputeIndex(access, node->InputAt(1)));
 }
 
 
-void SimplifiedLowering::Lower(Node* node) {}
+Reduction SimplifiedLowering::Reduce(Node* node) { return NoChange(); }
 
 
 void SimplifiedLowering::LowerChange(Node* node, Node* effect, Node* control) {
   switch (node->opcode()) {
     case IrOpcode::kChangeTaggedToInt32:
       DoChangeTaggedToUI32(node, effect, control, true);
       break;
     case IrOpcode::kChangeTaggedToUint32:
       DoChangeTaggedToUI32(node, effect, control, false);
       break;
@@ skipping 17 matching lines @@
       break;
     default:
       UNREACHABLE();
       break;
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8