Faster invocation of custom comparator function.

src/arm/virtual-frame-arm.h

 // Copyright 2009 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 248 matching lines @@
   void PushTryHandler(HandlerType type);
 
   // Call stub given the number of arguments it expects on (and
   // removes from) the stack.
   void CallStub(CodeStub* stub, int arg_count) {
     Forget(arg_count);
     ASSERT(cgen()->HasValidEntryRegisters());
     masm()->CallStub(stub);
   }
 
+  // Call JS function from top of the stack with arguments
+  // taken from the stack.
+  void CallJSFunction(int arg_count);
+
   // Call runtime given the number of arguments expected on (and
   // removed from) the stack.
   void CallRuntime(Runtime::Function* f, int arg_count);
   void CallRuntime(Runtime::FunctionId id, int arg_count);
 
 #ifdef ENABLE_DEBUGGER_SUPPORT
   void DebugBreak();
 #endif
 
   // Invoke builtin given the number of arguments it expects on (and
@@ skipping 179 matching lines @@
   inline bool Equals(VirtualFrame* other);
 
   friend class JumpTarget;
   friend class DeferredCode;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_VIRTUAL_FRAME_ARM_H_