https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111252
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- The easiest fix for __builtin_copysignf128 is change expand_copysign_bit in optabs.cc to use extract_bit_field to do the extraction and store_bit_field for the insert instead of what it currently does of using ands and ors ...