https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108922
--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> --- (In reply to Uroš Bizjak from comment #17) > So, based on the above finding, should insn condition be changed to > !flag_errno_math? I'd say that it shouldn't be the business of backends to check flag_errno_math, it should be the middle-end. And it can either ignore the fmod (but isn't say hypot and others a similar case) optab in that case or it could do the sqrt trick by using the optab inline even for flag_errno_math, then using comparison detect if it is one of the exceptional cases and call the library function in that case. Of course, that is probably GCC 14 material and so a hack on the backend side would be acceptable too.
