[turbofan] Make Pipeline more private.

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_
 
 // Clients of this interface shouldn't depend on lots of compiler internals.
 // Do not include anything from src/compiler here!
 #include "src/objects.h"
@@ skipping 10 matching lines @@
 class CallDescriptor;
 class Graph;
 class InstructionSequence;
 class Linkage;
 class PipelineData;
 class Schedule;
 class SourcePositionTable;
 
 class Pipeline {
  public:
-  explicit Pipeline(PipelineData* data) : data_(data) {}
+  // Returns a new compilation job for the given function.
+  static CompilationJob* NewCompilationJob(Handle<JSFunction> function);
 
-  // Run the graph creation and initial optimization passes.
-  bool CreateGraph();
-
-  // Run the concurrent optimization passes.
-  bool OptimizeGraph(Linkage* linkage);
-
-  // Perform the actual code generation and return handle to a code object.
-  Handle<Code> GenerateCode(Linkage* linkage);
-
-  // Run the entire pipeline and generate a handle to a code object.
-  Handle<Code> GenerateCode();
+  // Returns a new compilation job for the WebAssembly compilation info.
+  static CompilationJob* NewWasmCompilationJob(
+      CompilationInfo* info, Graph* graph, CallDescriptor* descriptor,
+      SourcePositionTable* source_positions);
 
   // Run the pipeline on a machine graph and generate code. The {schedule} must
   // be valid, hence the given {graph} does not need to be schedulable.
   static Handle<Code> GenerateCodeForCodeStub(Isolate* isolate,
                                               CallDescriptor* call_descriptor,
                                               Graph* graph, Schedule* schedule,
                                               Code::Flags flags,
                                               const char* debug_name);
 
   // Run the entire pipeline and generate a handle to a code object suitable for
@@ skipping 11 matching lines @@
                                           InstructionSequence* sequence,
                                           bool run_verifier);
 
   // Run the pipeline on a machine graph and generate code. If {schedule} is
   // {nullptr}, then compute a new schedule for code generation.
   static Handle<Code> GenerateCodeForTesting(CompilationInfo* info,
                                              CallDescriptor* call_descriptor,
                                              Graph* graph,
                                              Schedule* schedule = nullptr);
 
-  // Returns a new compilation job for the given function.
-  static CompilationJob* NewCompilationJob(Handle<JSFunction> function);
+ private:
+  friend class PipelineCompilationJob;
+  friend class PipelineWasmCompilationJob;
 
-  // Returns a new compilation job for the WebAssembly compilation info.
-  static CompilationJob* NewWasmCompilationJob(
-      CompilationInfo* info, Graph* graph, CallDescriptor* descriptor,
-      SourcePositionTable* source_positions);
-
- private:
-  // The wasm compilation job calls ScheduleAndSelectInstructions and
-  // RunPrintAndVerify, so we make it a member class.
-  friend class PipelineWasmCompilationJob;
+  explicit Pipeline(PipelineData* data) : data_(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);
 
+  // Run the graph creation and initial optimization passes.
+  bool CreateGraph();
+
+  // Run the concurrent optimization passes.
+  bool OptimizeGraph(Linkage* linkage);
+
+  // Perform the actual code generation and return handle to a code object.
+  Handle<Code> GenerateCode(Linkage* linkage);
+
+  // Run the entire pipeline and generate a handle to a code object.
+  Handle<Code> GenerateCode();
+
   void BeginPhaseKind(const char* phase_kind);
   void EndPhaseKind();
   bool ScheduleAndSelectInstructions(Linkage* linkage);
   void RunPrintAndVerify(const char* phase, bool untyped = false);
   Handle<Code> ScheduleAndGenerateCode(CallDescriptor* call_descriptor);
   void AllocateRegisters(const RegisterConfiguration* config,
                          CallDescriptor* descriptor, bool run_verifier);
 
   CompilationInfo* info() const;
   Isolate* isolate() const;
 
   PipelineData* const data_;
 
   DISALLOW_COPY_AND_ASSIGN(Pipeline);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_PIPELINE_H_