Optimize isFinite and isNaN.

src/mips/frames-mips.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 176 matching lines @@
   static const int kContextOffset     = -1 * kPointerSize;
   static const int kCallerFPOffset    =  0 * kPointerSize;
   static const int kCallerPCOffset    = +1 * kPointerSize;
   static const int kCallerSPOffset    = +2 * kPointerSize;
 
   // Size of the MIPS 4 32-bit argument slots.
   // This is just an alias with a shorter name. Use it from now on.
   static const int kRArgsSlotsSize = 4 * kPointerSize;
   static const int kRegularArgsSlotsSize = kRArgsSlotsSize;
 
+  // C/C++ argument slots size.
+  static const int kCArgSlotCount = 4;
+  static const int kCArgsSlotsSize = kCArgSlotCount * kPointerSize;
   // JS argument slots size.
   static const int kJSArgsSlotsSize = 0 * kPointerSize;
   // Assembly builtins argument slots size.
   static const int kBArgsSlotsSize = 0 * kPointerSize;
 };
 
 
 class JavaScriptFrameConstants : public AllStatic {
  public:
   // FP-relative.
@@ skipping 21 matching lines @@
 
 inline Object* JavaScriptFrame::function_slot_object() const {
   const int offset = JavaScriptFrameConstants::kFunctionOffset;
   return Memory::Object_at(fp() + offset);
 }
 
 
 } }  // namespace v8::internal
 
 #endif