Wire up simplified and change lowering in pipeline.

src/compiler/pipeline.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/pipeline.h"
 
 #include "src/base/platform/elapsed-timer.h"
 #include "src/compiler/ast-graph-builder.h"
+#include "src/compiler/change-lowering.h"
 #include "src/compiler/code-generator.h"
 #include "src/compiler/graph-replay.h"
 #include "src/compiler/graph-visualizer.h"
 #include "src/compiler/instruction.h"
 #include "src/compiler/instruction-selector.h"
 #include "src/compiler/js-context-specialization.h"
 #include "src/compiler/js-generic-lowering.h"
 #include "src/compiler/js-inlining.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/phi-reducer.h"
@@ skipping 207 matching lines @@
                                 "typed lowering");
       SourcePositionTable::Scope pos(&source_positions,
                                      SourcePosition::Unknown());
       JSTypedLowering lowering(&jsgraph);
       GraphReducer graph_reducer(&graph);
       graph_reducer.AddReducer(&lowering);
       graph_reducer.ReduceGraph();
 
       VerifyAndPrintGraph(&graph, "Lowered typed");
     }
+    {
+      // Lower simplified operators and insert changes.
+      PhaseStats lowering_stats(info(), PhaseStats::CREATE_GRAPH,
+                                "simplified lowering");
+      SourcePositionTable::Scope pos(&source_positions,
+                                     SourcePosition::Unknown());
+      SimplifiedLowering lowering(&jsgraph);
+      lowering.LowerAllNodes();
+
+      VerifyAndPrintGraph(&graph, "Lowered simplified");
+    }
+    {
+      // Lower changes that have been inserted before.
+      PhaseStats lowering_stats(info(), PhaseStats::CREATE_GRAPH,
+                                "change lowering");
+      SourcePositionTable::Scope pos(&source_positions,
+                                     SourcePosition::Unknown());
+      Linkage linkage(info());
+      MachineOperatorBuilder machine(zone());
+      ChangeLowering lowering(&jsgraph, &linkage, &machine);
+      GraphReducer graph_reducer(&graph);
+      graph_reducer.AddReducer(&lowering);
+      graph_reducer.ReduceGraph();
+
+      VerifyAndPrintGraph(&graph, "Lowered changes");
+    }
   }
 
   Handle<Code> code = Handle<Code>::null();
   if (SupportedTarget()) {
     {
       // Lower any remaining generic JSOperators.
       PhaseStats lowering_stats(info(), PhaseStats::CREATE_GRAPH,
                                 "generic lowering");
       SourcePositionTable::Scope pos(&source_positions,
                                      SourcePosition::Unknown());
@@ skipping 117 matching lines @@
 }
 
 
 void Pipeline::TearDown() {
   InstructionOperand::TearDownCaches();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8