Fix the xcode build by not including x64 specific code when generating...

src/ia32/lithium-codegen-ia32.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
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 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
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 //       with the distribution.
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 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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+#include "v8.h"
+
+#if defined(V8_TARGET_ARCH_IA32)
+
 #include "ia32/lithium-codegen-ia32.h"
 #include "code-stubs.h"
 #include "stub-cache.h"
 
 namespace v8 {
 namespace internal {
 
 
 class SafepointGenerator : public PostCallGenerator {
  public:
@@ skipping 3437 matching lines @@
   ASSERT(!environment->HasBeenRegistered());
   RegisterEnvironmentForDeoptimization(environment);
   ASSERT(osr_pc_offset_ == -1);
   osr_pc_offset_ = masm()->pc_offset();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
+
+#endif  // V8_TARGET_ARCH_IA32