[turbofan] basic block profiler

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 24d4b0898de5d5cdb36327f12d24c3283b21e355..8f3c5693f9c6437b1303e75022b4fdfdf7967ba7 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -88,6 +88,9 @@ class Redirection;
 class Simulator;
 #endif
 
+namespace compiler {

[titzer, 2014/09/23 14:14:09]

The more I think about it, this thing can't (entirely) live in the compiler
directory, i.e. V8 cannot depend on TurboFan internals. So you will have to
split the BasicBlockProfiler part that does the instrumentation to live in
TurboFan, and the other part live in V8.

+class BasicBlockProfiler;
+}
 
 // Static indirection table for handles to constants.  If a frame
 // element represents a constant, the data contains an index into
@@ -1107,6 +1110,8 @@ class Isolate {
   void SetUseCounterCallback(v8::Isolate::UseCounterCallback callback);
   void CountUsage(v8::Isolate::UseCounterFeature feature);
 
+  compiler::BasicBlockProfiler* GetBasicBlockProfiler();
+
   static Isolate* NewForTesting() { return new Isolate(); }
 
  private:
@@ -1327,6 +1332,7 @@ class Isolate {
   List<CallCompletedCallback> call_completed_callbacks_;
 
   v8::Isolate::UseCounterCallback use_counter_callback_;
+  compiler::BasicBlockProfiler* basic_block_profiler_;
 
   friend class ExecutionAccess;
   friend class HandleScopeImplementer;