Enable optimization of top-level code.

src/compiler.h

-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2012 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
 //       with the distribution.
@@ skipping 144 matching lines @@
 
   // Deoptimization support.
   bool HasDeoptimizationSupport() const {
     return SupportsDeoptimization::decode(flags_);
   }
   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.
-  // NONOPT is generated by the full codegen or the classic backend
-  //   and is not prepared for recompilation/bailouts. These functions
-  //   are never recompiled.
+  // NONOPT is generated by the full codegen and is not prepared for
+  //   recompilation/bailouts.  These functions are never recompiled.
   enum Mode {
     BASE,
     OPTIMIZE,
     NONOPT
   };
 
   CompilationInfo() : function_(NULL) {}
 
   void Initialize(Mode mode) {
     mode_ = V8::UseCrankshaft() ? mode : NONOPT;
@@ skipping 131 matching lines @@
 
   static void RecordFunctionCompilation(Logger::LogEventsAndTags tag,
                                         CompilationInfo* info,
                                         Handle<SharedFunctionInfo> shared);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_