Count-based profiling for primitive functions (hidden behind a flag)

src/compiler.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 150 matching lines @@
   void EnableDeoptimizationSupport() {
     ASSERT(IsOptimizable());
     flags_ |= SupportsDeoptimization::encode(true);
   }
 
   // Determine whether or not we can adaptively optimize.
   bool AllowOptimize() {
     return V8::UseCrankshaft() && !closure_.is_null();
   }
 
+  // Determines whether or not to insert a self-optimization header.
+  bool ShouldSelfOptimize();
+
   // Disable all optimization attempts of this info for the rest of the
   // current compilation pipeline.
   void AbortOptimization();
 
  private:
   Isolate* isolate_;
 
   // Compilation mode.
   // BASE is generated by the full codegen, optionally prepared for bailouts.
   // OPTIMIZE is optimized code generated by the Hydrogen-based backend.
@@ skipping 92 matching lines @@
 // real function with a context.
 
 class Compiler : public AllStatic {
  public:
   // Default maximum number of function optimization attempts before we
   // give up.
   static const int kDefaultMaxOptCount = 10;
 
   static const int kMaxInliningLevels = 3;
 
+  // Call count before primitive functions trigger their own optimization.
+  static const int kCallsUntilPrimitiveOpt = 200;
+
   // All routines return a SharedFunctionInfo.
   // If an error occurs an exception is raised and the return handle
   // contains NULL.
 
   // Compile a String source within a context.
   static Handle<SharedFunctionInfo> Compile(Handle<String> source,
                                             Handle<Object> script_name,
                                             int line_offset,
                                             int column_offset,
                                             v8::Extension* extension,
@@ skipping 29 matching lines @@
 
   static void RecordFunctionCompilation(Logger::LogEventsAndTags tag,
                                         CompilationInfo* info,
                                         Handle<SharedFunctionInfo> shared);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_