X64: Add StoreField inline cache stub.

src/x64/macro-assembler-x64.h

 // Copyright 2006-2008 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 194 matching lines @@
   // registers are always clobbered, but the object register is only
   // clobbered if it the same as the holder register. The function
   // returns a register containing the holder - either object_reg or
   // holder_reg.
   Register CheckMaps(JSObject* object, Register object_reg,
                      JSObject* holder, Register holder_reg,
                      Register scratch, Label* miss);
 
   // Generate code for checking access rights - used for security checks
   // on access to global objects across environments. The holder register
-  // is left untouched, but the scratch register is clobbered.
+  // is left untouched, but the scratch register and kScratchRegister,
+  // which must be different, are clobbered.
   void CheckAccessGlobalProxy(Register holder_reg,
                               Register scratch,
                               Label* miss);
 
 
   // ---------------------------------------------------------------------------
   // Support functions.
 
   // Check if result is zero and op is negative.
   void NegativeZeroTest(Register result, Register op, Label* then_label);
@@ skipping 170 matching lines @@
   }                                                                       \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_MACRO_ASSEMBLER_X64_H_