Fixed incorrect instruction usage in KeyedLoadIC for byte and word...

src/ia32/ic-ia32.cc

 // 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 370 matching lines @@
 
   // eax: untagged index
   // ecx: elements array
   __ mov(ecx, FieldOperand(ecx, ExternalArray::kExternalPointerOffset));
   // ecx: base pointer of external storage
   switch (array_type) {
     case kExternalByteArray:
       __ movsx_b(eax, Operand(ecx, eax, times_1, 0));
       break;
     case kExternalUnsignedByteArray:
-      __ mov_b(eax, Operand(ecx, eax, times_1, 0));
+      __ movzx_b(eax, Operand(ecx, eax, times_1, 0));
       break;
     case kExternalShortArray:
       __ movsx_w(eax, Operand(ecx, eax, times_2, 0));
       break;
     case kExternalUnsignedShortArray:
-      __ mov_w(eax, Operand(ecx, eax, times_2, 0));
+      __ movzx_w(eax, Operand(ecx, eax, times_2, 0));
       break;
     case kExternalIntArray:
     case kExternalUnsignedIntArray:
       __ mov(eax, Operand(ecx, eax, times_4, 0));
       break;
     case kExternalFloatArray:
       __ fld_s(Operand(ecx, eax, times_4, 0));
       break;
     default:
       UNREACHABLE();
@@ skipping 954 matching lines @@
 
   // Do tail-call to runtime routine.
   __ TailCallRuntime(
       ExternalReference(IC_Utility(kSharedStoreIC_ExtendStorage)), 3, 1);
 }
 
 #undef __
 
 
 } }  // namespace v8::internal