[i386, patch, RFC] HLE support in GCC

[Andi Kleen]

> I also have a question regarding AS compatibility. In case one built
> GCC using AS with support of HLE then using this GCC on a machine with
> old AS will cause fail because of usupported prefix. Can we support it

I don't think that's a supported use case for gcc.
It also doesn't work with .cfi* intrinsics and some other things.

> compile time rather configure time?

The only way to do that would be to always generate .byte,
but the people who read the assembler output would hate you 
for it.

-Andi
-- 
ak@linux.intel.com -- Speaking for myself only.