[intel inline asm] Crash when using 'short' keyword in intel assembly jumps instructions

Hello,

Compiling this minimal code will make clang crash

  void f(){
    __asm jmp short l;
  }

The same thing occurs when replacing "short" by "long" (but not with any
other word, for instance "foo")
More informations are available in the bug report
http://llvm.org/bugs/show_bug.cgi?id=17751

Thanks for your work.
William.