Remove a duplicated move instruction for store IC calls on ia32.

src/ia32/virtual-frame-ia32.cc

 // 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 919 matching lines @@
 
 Result VirtualFrame::CallStoreIC(Handle<String> name, bool is_contextual) {
   // Value and (if not contextual) receiver are on top of the frame.
   //  The IC expects name in ecx, value in eax, and receiver in edx.
   Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Initialize));
   Result value = Pop();
   if (is_contextual) {
     PrepareForCall(0, 0);
     value.ToRegister(eax);
     __ mov(edx, Operand(esi, Context::SlotOffset(Context::GLOBAL_INDEX)));
-    __ mov(ecx, name);
     value.Unuse();
   } else {
     Result receiver = Pop();
     PrepareForCall(0, 0);
     MoveResultsToRegisters(&value, &receiver, eax, edx);
   }
   __ mov(ecx, name);
   return RawCallCodeObject(ic, RelocInfo::CODE_TARGET);
 }
 
@@ skipping 226 matching lines @@
     return;
   }
 
   UNREACHABLE();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal