Make closures optimizable by Crankshaft compiler.

src/runtime-profiler.cc

 // Copyright 2010 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 117 matching lines @@
 }
 
 
 void PendingListNode::WeakCallback(v8::Persistent<v8::Value>, void* data) {
   reinterpret_cast<PendingListNode*>(data)->Destroy();
 }
 
 
 static bool IsOptimizable(JSFunction* function) {
   Code* code = function->code();
-  return code->kind() == Code::FUNCTION && code->optimizable();
+  return code->kind() == Code::FUNCTION && code->optimizable()
+      && function->shared()->code() == code;
 }
 
 
 static void Optimize(JSFunction* function, bool eager, int delay) {
   ASSERT(IsOptimizable(function));
   if (FLAG_trace_opt) {
     PrintF("[marking (%s) ", eager ? "eagerly" : "lazily");
     function->PrintName();
     PrintF(" for recompilation");
     if (delay > 0) {
       PrintF(" (delayed %0.3f ms)", static_cast<double>(delay) / 1000);
     }
     PrintF("]\n");
   }
 
   // The next call to the function will trigger optimization.
   function->MarkForLazyRecompilation();
 }
 
 
 static void AttemptOnStackReplacement(JSFunction* function) {
   // See AlwaysFullCompiler (in compiler.cc) comment on why we need
   // Debug::has_break_points().
   ASSERT(function->IsMarkedForLazyRecompilation());
-  if (!FLAG_use_osr || Debug::has_break_points() || function->IsBuiltin()) {
+  if (!FLAG_use_osr || Debug::has_break_points() || function->IsBuiltin()
+      || !function->shared()->allows_lazy_compilation()) {
     return;
   }
 
   SharedFunctionInfo* shared = function->shared();
   // If the code is not optimizable, don't try OSR.
   if (!shared->code()->optimizable()) return;
 
   // We are not prepared to do OSR for a function that already has an
   // allocated arguments object.  The optimized code would bypass it for
   // arguments accesses, which is unsound.  Don't try OSR.
@@ skipping 269 matching lines @@
       } else {
         if (Top::WaitForJSState()) return true;
       }
     }
   }
   return false;
 }
 
 
 } }  // namespace v8::internal