> 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 -- a...@linux.intel.com -- Speaking for myself only.