Revert of [turbofan] Run DeadCodeElimination together with the advanced reducers.

src/compiler/pipeline.cc

Index: src/compiler/pipeline.cc
diff --git a/src/compiler/pipeline.cc b/src/compiler/pipeline.cc
index 81a00dd18aa7ef54a4b30871eaae4647be5f14fd..d71ade0ce01fb570f91d5ec5020b4a5254e05372 100644
--- a/src/compiler/pipeline.cc
+++ b/src/compiler/pipeline.cc
@@ -407,7 +407,8 @@
 class JSGraphReducer final : public GraphReducer {
  public:
   JSGraphReducer(JSGraph* jsgraph, Zone* zone)
-      : GraphReducer(zone, jsgraph->graph(), jsgraph->Dead()) {}
+      : GraphReducer(zone, jsgraph->graph(), jsgraph->TheHoleConstant(),
+                     jsgraph->Dead()) {}
   ~JSGraphReducer() final {}
 };
 
@@ -564,8 +565,6 @@
 
   void Run(PipelineData* data, Zone* temp_zone) {
     JSGraphReducer graph_reducer(data->jsgraph(), temp_zone);
-    DeadCodeElimination dead_code_elimination(&graph_reducer, data->graph(),
-                                              data->common());
     LoadElimination load_elimination(&graph_reducer);
     JSBuiltinReducer builtin_reducer(&graph_reducer, data->jsgraph());
     JSTypedLowering typed_lowering(&graph_reducer, data->jsgraph(), temp_zone);
@@ -576,7 +575,6 @@
             : JSIntrinsicLowering::kDeoptimizationDisabled);
     CommonOperatorReducer common_reducer(&graph_reducer, data->graph(),
                                          data->common(), data->machine());
-    AddReducer(data, &graph_reducer, &dead_code_elimination);
     AddReducer(data, &graph_reducer, &builtin_reducer);
     AddReducer(data, &graph_reducer, &typed_lowering);
     AddReducer(data, &graph_reducer, &intrinsic_lowering);
@@ -595,13 +593,10 @@
                                 data->source_positions());
     lowering.LowerAllNodes();
     JSGraphReducer graph_reducer(data->jsgraph(), temp_zone);
-    DeadCodeElimination dead_code_elimination(&graph_reducer, data->graph(),
-                                              data->common());
     ValueNumberingReducer vn_reducer(temp_zone);
     MachineOperatorReducer machine_reducer(data->jsgraph());
     CommonOperatorReducer common_reducer(&graph_reducer, data->graph(),
                                          data->common(), data->machine());
-    AddReducer(data, &graph_reducer, &dead_code_elimination);
     AddReducer(data, &graph_reducer, &vn_reducer);
     AddReducer(data, &graph_reducer, &machine_reducer);
     AddReducer(data, &graph_reducer, &common_reducer);
@@ -626,18 +621,29 @@
 
   void Run(PipelineData* data, Zone* temp_zone) {
     JSGraphReducer graph_reducer(data->jsgraph(), temp_zone);
-    DeadCodeElimination dead_code_elimination(&graph_reducer, data->graph(),
-                                              data->common());
     ValueNumberingReducer vn_reducer(temp_zone);
     ChangeLowering lowering(data->jsgraph());
     MachineOperatorReducer machine_reducer(data->jsgraph());
     CommonOperatorReducer common_reducer(&graph_reducer, data->graph(),
                                          data->common(), data->machine());
-    AddReducer(data, &graph_reducer, &dead_code_elimination);
     AddReducer(data, &graph_reducer, &vn_reducer);
     AddReducer(data, &graph_reducer, &lowering);
     AddReducer(data, &graph_reducer, &machine_reducer);
     AddReducer(data, &graph_reducer, &common_reducer);
+    graph_reducer.ReduceGraph();
+  }
+};
+
+
+struct LateControlReductionPhase {
+  static const char* phase_name() { return "late control reduction"; }
+  void Run(PipelineData* data, Zone* temp_zone) {
+    GraphReducer graph_reducer(temp_zone, data->graph());
+    DeadCodeElimination dce(&graph_reducer, data->graph(), data->common());
+    CommonOperatorReducer common(&graph_reducer, data->graph(), data->common(),
+                                 data->machine());
+    graph_reducer.AddReducer(&dce);
+    graph_reducer.AddReducer(&common);
     graph_reducer.ReduceGraph();
   }
 };