[turbofan] Enable concurrent (re)compilation.

src/compiler/pipeline.h

Index: src/compiler/pipeline.h
diff --git a/src/compiler/pipeline.h b/src/compiler/pipeline.h
index 911f283f5e457accef91e24c4f9b3ea8e162bcee..6a0253611b73ab6985f8b90e80061ede4167f0ec 100644
--- a/src/compiler/pipeline.h
+++ b/src/compiler/pipeline.h
@@ -15,7 +15,6 @@ namespace internal {
 class CompilationInfo;
 class OptimizedCompileJob;
 class RegisterConfiguration;
-class Zone;
 
 namespace compiler {
 
@@ -26,11 +25,19 @@ class Linkage;
 class PipelineData;
 class Schedule;
 class SourcePositionTable;
-class ZonePool;
 
 class Pipeline {
  public:
-  explicit Pipeline(CompilationInfo* info) : info_(info), data_(nullptr) {}
+  explicit Pipeline(PipelineData* data) : data_(data) {}
+
+  // 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();
@@ -43,6 +50,10 @@ class Pipeline {
                                               Code::Flags flags,
                                               const char* debug_name);
 
+  // Run the entire pipeline and generate a handle to a code object suitable for
+  // testing.
+  static Handle<Code> GenerateCodeForTesting(CompilationInfo* info);
+
   // 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,
@@ -64,11 +75,13 @@ class Pipeline {
   // Returns a new compilation job for the given compilation info.
   static OptimizedCompileJob* NewCompilationJob(CompilationInfo* info);
 
-  void InitializeWasmCompilation(Zone* pipeline_zone, ZonePool* zone_pool,
-                                 Graph* graph,
-                                 SourcePositionTable* source_positions);
-  bool ExecuteWasmCompilation(CallDescriptor* descriptor);
-  Handle<Code> FinalizeWasmCompilation(CallDescriptor* descriptor);
+  // Returns a new compilation job for the WebAssembly compilation info.
+  static OptimizedCompileJob* NewWasmCompilationJob(
+      CompilationInfo* info, Graph* graph, CallDescriptor* descriptor,
+      SourcePositionTable* source_positions);
+
+  // TODO(mstarzinger, bmeurer): This shouldn't be public!
+  bool ScheduleAndSelectInstructions(Linkage* linkage);
 
  private:
   // Helpers for executing pipeline phases.
@@ -80,17 +93,16 @@ class Pipeline {
   void Run(Arg0 arg_0, Arg1 arg_1);
 
   void BeginPhaseKind(const char* phase_kind);
+  void EndPhaseKind();
   void RunPrintAndVerify(const char* phase, bool untyped = false);
+  Handle<Code> ScheduleAndGenerateCode(CallDescriptor* call_descriptor);
   void AllocateRegisters(const RegisterConfiguration* config,
                          CallDescriptor* descriptor, bool run_verifier);
-  bool ScheduleGraph(CallDescriptor* call_descriptor);
-  Handle<Code> GenerateCode(CallDescriptor* descriptor);
-  Handle<Code> ScheduleAndGenerateCode(CallDescriptor* call_descriptor);
-  CompilationInfo* info() const { return info_; }
+
+  CompilationInfo* info() const;
   Isolate* isolate() const;
 
-  CompilationInfo* const info_;
-  PipelineData* data_;
+  PipelineData* const data_;
 
   DISALLOW_COPY_AND_ASSIGN(Pipeline);
 };