Run ControlReducer early after graph building, then again later.

test/cctest/compiler/test-scheduler.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/v8.h"
 #include "test/cctest/cctest.h"
 
 #include "src/compiler/access-builder.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/generic-node-inl.h"
@@ skipping 1937 matching lines @@
   loop->ReplaceInput(1, loop);  // self loop, NTL.
 
   Node* effect = graph.NewNode(common.EffectPhi(1), start, loop);
   effect->ReplaceInput(0, effect);
 
   Node* terminate = graph.NewNode(common.Terminate(1), effect, loop);
   Node* end = graph.NewNode(common.End(), terminate);
 
   graph.SetEnd(end);
 
-  Schedule* schedule = ComputeAndVerifySchedule(5, &graph);
+  Schedule* schedule = ComputeAndVerifySchedule(6, &graph);
   BasicBlock* block = schedule->block(loop);
   CHECK_NE(NULL, loop);
   CHECK_EQ(block, schedule->block(effect));
   CHECK_GE(block->rpo_number(), 0);
 }
 
 #endif