[turbofan] Output file for C1 visualizer.

src/compiler/pipeline.h

Index: src/compiler/pipeline.h
diff --git a/src/compiler/pipeline.h b/src/compiler/pipeline.h
index 9f8241a63c4ee4984f2f261f333a6447ce849c09..f47c3c1284d3ae7cfaa6fa96795e2a165840afe3 100644
--- a/src/compiler/pipeline.h
+++ b/src/compiler/pipeline.h
@@ -5,6 +5,8 @@
 #ifndef V8_COMPILER_PIPELINE_H_
 #define V8_COMPILER_PIPELINE_H_
 
+#include <fstream>  // NOLINT(readability/streams)
+
 #include "src/v8.h"
 
 #include "src/compiler.h"
@@ -18,9 +20,11 @@ namespace compiler {
 
 // Clients of this interface shouldn't depend on lots of compiler internals.
 class Graph;
+class InstructionSequence;
+class Linkage;
+class RegisterAllocator;
 class Schedule;
 class SourcePositionTable;
-class Linkage;
 
 class Pipeline {
  public:
@@ -48,6 +52,12 @@ class Pipeline {
   Zone* zone() { return info_->zone(); }
 
   Schedule* ComputeSchedule(Graph* graph);
+  void OpenTurboCfgFile(std::ofstream* stream);
+  void PrintCompilationStart();
+  void PrintScheduleAndInstructions(const char* phase, const Schedule* schedule,
+                                    const SourcePositionTable* positions,
+                                    const InstructionSequence* instructions);
+  void PrintAllocator(const char* phase, const RegisterAllocator* allocator);
   void VerifyAndPrintGraph(Graph* graph, const char* phase);
   Handle<Code> GenerateCode(Linkage* linkage, Graph* graph, Schedule* schedule,
                             SourcePositionTable* source_positions);