[turbofan] move register allocation phases to pipeline

src/compiler/pipeline.h

 // 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.
 
 #ifndef V8_COMPILER_PIPELINE_H_
 #define V8_COMPILER_PIPELINE_H_
 
 #include "src/v8.h"
 
 #include "src/compiler.h"
 
 // Note: TODO(turbofan) implies a performance improvement opportunity,
 //   and TODO(name) implies an incomplete implementation
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // Clients of this interface shouldn't depend on lots of compiler internals.
 class Graph;
+class InstructionSequence;
 class Linkage;
 class PipelineData;
+class RegisterConfiguration;
 class Schedule;
 
 class Pipeline {
  public:
   explicit Pipeline(CompilationInfo* info) : info_(info) {}
 
   // Run the entire pipeline and generate a handle to a code object.
   Handle<Code> GenerateCode();
 
   // Run the pipeline on a machine graph and generate code. If {schedule}
   // is {NULL}, then compute a new schedule for code generation.
   Handle<Code> GenerateCodeForMachineGraph(Linkage* linkage, Graph* graph,
                                            Schedule* schedule = NULL);
 
+  static bool AllocateRegisters(const RegisterConfiguration* config,
+                                InstructionSequence* sequence,
+                                bool run_verifier);
+
   static inline bool SupportedBackend() { return V8_TURBOFAN_BACKEND != 0; }
   static inline bool SupportedTarget() { return V8_TURBOFAN_TARGET != 0; }
 
   static void SetUp();
   static void TearDown();
 
  private:
   CompilationInfo* info_;
   PipelineData* data_;
 
   // Helpers for executing pipeline phases.
   template <typename Phase>
   void Run();
   template <typename Phase, typename Arg0>
   void Run(Arg0 arg_0);
-  template <typename Phase, typename Arg0, typename Arg1>
-  void Run(Arg0 arg_0, Arg1 arg_1);
 
   CompilationInfo* info() const { return info_; }
   Isolate* isolate() { return info_->isolate(); }
 
+  void BeginPhaseKind(const char* phase_kind);
   void RunPrintAndVerify(const char* phase, bool untyped = false);
   void GenerateCode(Linkage* linkage);
+  void AllocateRegisters(const RegisterConfiguration* config,
+                         bool run_verifier);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_PIPELINE_H_