llvm dev - Nov 2012 - [LLVMdev] Clang error - CPU feature not currently enabled

Hello,
I'm trying to use clang to compile a file on Mac OS (x86_64) and get the
following error.

<inline asm>:4:2: error: instruction requires a CPU feature not currently
enabled
        jmp *%edx
        ^
fatal error: error in backend: Error parsing inline asm

This file does compile on an Ubuntu 32bit machine

I checked on google and didn't find anything helpful about it.
Does anyone know what CPU feature this instruction requires?

Thanks,
Alon

PS
Sorry for the Subject mistake in the last email

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