Fix x64 and arm build.

src/arm/ic-arm.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 600 matching lines @@
   __ LoadRoot(ip, Heap::kTheHoleValueRootIndex);
   __ cmp(r0, ip);
   // In case the loaded value is the_hole we have to consult GetProperty
   // to ensure the prototype chain is searched.
   __ b(eq, &slow);
 
   __ Ret();
 }
 
 
+void KeyedLoadIC::GenerateString(MacroAssembler* masm) {
+  // ---------- S t a t e --------------
+  //  -- lr     : return address
+  //  -- sp[0]  : key
+  //  -- sp[4]  : receiver
+  GenerateGeneric(masm);
+}
+
+
 void KeyedLoadIC::GenerateExternalArray(MacroAssembler* masm,
                                         ExternalArrayType array_type) {
   // TODO(476): port specialized code.
   GenerateGeneric(masm);
 }
 
 
 void KeyedStoreIC::Generate(MacroAssembler* masm,
                             const ExternalReference& f) {
   // ---------- S t a t e --------------
@@ skipping 201 matching lines @@
 
   // Perform tail call to the entry.
   __ TailCallRuntime(f, 3, 1);
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal