Machine-readable TurboFan compiler statistics

src/compilation-statistics.h

Index: src/compilation-statistics.h
diff --git a/src/compilation-statistics.h b/src/compilation-statistics.h
index 6219180197d582b9b076d5a9466427e502b56404..ceffc2ebc19fcebc297d96e7aba4a63468abcdb9 100644
--- a/src/compilation-statistics.h
+++ b/src/compilation-statistics.h
@@ -15,6 +15,12 @@ namespace v8 {
 namespace internal {
 
 class CompilationInfo;
+class CompilationStatistics;
+
+struct AsPrintableStatistics {
+  const CompilationStatistics& s;
+  const bool machine_output;
+};
 
 class CompilationStatistics final : public Malloced {
  public:
@@ -65,7 +71,7 @@ class CompilationStatistics final : public Malloced {
   };
 
   friend std::ostream& operator<<(std::ostream& os,
-                                  const CompilationStatistics& s);
+                                  const AsPrintableStatistics& s);
 
   typedef OrderedStats PhaseKindStats;
   typedef std::map<std::string, PhaseKindStats> PhaseKindMap;
@@ -78,7 +84,7 @@ class CompilationStatistics final : public Malloced {
   DISALLOW_COPY_AND_ASSIGN(CompilationStatistics);
 };
 
-std::ostream& operator<<(std::ostream& os, const CompilationStatistics& s);
+std::ostream& operator<<(std::ostream& os, const AsPrintableStatistics& s);
 
 }  // namespace internal
 }  // namespace v8