MC X86 lacking support for hyphenated VIA Padlock instructions

I was wondering if someone with more familiarity with MC
on X86 could consider looking into adding support for
the hyphenated versions of the VIA Padlock instructions?

If anyone is up for it there are details within these
two bug reports..

http://www.llvm.org/bugs/show_bug.cgi?id=8556
http://www.llvm.org/bugs/show_bug.cgi?id=10266

Take a look at llvm/lib/Target/X86InstrSystem.td perhaps.

I had already found that, but I wouldn't be asking if it was
that straightforward.

I thought I would try something like the following..

Index: lib/Target/X86/X86InstrSystem.td

Comments? Anyone that can help out?