[turbofan] add ForTesting to pipeline entry points that are for testing only.

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 CallDescriptor;
 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);
+  // 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,
+                                             Graph* graph,
+                                             Schedule* schedule = nullptr);
 
-  static bool AllocateRegisters(const RegisterConfiguration* config,
-                                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(CallDescriptor* call_descriptor,
+                                             Graph* graph,
+                                             Schedule* schedule = nullptr);
+
+  // Run just the register allocator phases.
+  static bool AllocateRegistersForTesting(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:
+  static Handle<Code> GenerateCodeForTesting(CompilationInfo* info,
+                                             CallDescriptor* call_descriptor,
+                                             Graph* graph, Schedule* schedule);
+
   CompilationInfo* info_;
   PipelineData* data_;
 
   // Helpers for executing pipeline phases.
   template <typename Phase>
   void Run();
   template <typename Phase, typename Arg0>
   void Run(Arg0 arg_0);
 
   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_