https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92137
--- Comment #2 from Ariel Torti <arieltorti14 at gmail dot com> --- (In reply to Richard Biener from comment #1) > You shouldn't use those, they are for internal use only. That's the reason > they are not documented. Yes, my mistake. I just read https://www.mail-archive.com/gcc@gcc.gnu.org/msg03310.html, where it says built-ins should not be documented. But if builtins are not documented their interfaces should, right ? As in, the functions below should be documented: __bsfd / _bit_scan_forward __bsrd / _bit_scan_reverse __bswapd / _bswap __crc32b / __crc32w __crc32d __popcntd / _popcnt32 __rdpmc / _rdpmc __rdtsc / _rdtsc __rdtscp / _rdtscp __rolb __rolw __rold __rorb __rorw __rord __pause __bsfq __bsrq __bswapq / _bswap64 __crc32q __popcntq / _popcnt64 __rolq __rorq __writeeflags __readeflags
