https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55307
Jeffrey Walton <noloader at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |noloader at gmail dot com --- Comment #4 from Jeffrey Walton <noloader at gmail dot com> --- Forgive my ignorance... Is __builtin_cpu_supports really __builtin_os_supports? If we want to test CPU support (rather than OS support), then can it be done with the built-ins? Also, the documentation at https://gcc.gnu.org/onlinedocs/gcc-4.8.2/gcc/X86-Built-in-Functions.html does not mention that this is in fact OS support, and not CPU support.