Remove duplication in Scheduler and simplify interface. Make ComputeSchedule() and ComputeSpecialRP…

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/code-generator.h"
 #include "src/compiler/graph-replay.h"
@@ skipping 204 matching lines @@
        << "Finished compiling method "
        << info()->function()->debug_name()->ToCString().get()
        << " using Turbofan" << endl;
   }
 
   return code;
 }
 
 
 Schedule* Pipeline::ComputeSchedule(Graph* graph) {
-  Scheduler scheduler(zone());
   PhaseStats schedule_stats(info(), PhaseStats::CODEGEN, "scheduling");
-  return scheduler.NewSchedule(graph);
+  return Scheduler::ComputeSchedule(graph);
 }
 
 
 Handle<Code> Pipeline::GenerateCodeForMachineGraph(Linkage* linkage,
                                                    Graph* graph,
                                                    Schedule* schedule) {
   CHECK(SupportedBackend());
   if (schedule == NULL) {
     VerifyAndPrintGraph(graph, "Machine");
     schedule = ComputeSchedule(graph);
@@ skipping 66 matching lines @@
 }
 
 
 void Pipeline::TearDown() {
   InstructionOperand::TearDownCaches();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8