https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94665
--- Comment #17 from Segher Boessenkool <segher at gcc dot gnu.org> --- [ Please don't add other email addresses for me; I get enough mail already, I don't need all bugzilla mail in duplicate :-) ] (In reply to z.zhanghaij...@huawei.com from comment #16) > Ok, I will create a new PR to track this bug, and I will submit a bugfix > patch whit that PR. You can make this PR RESOLVED again, after you made a new PR. > In addition, I tracked the process of generating fmaxnm/fminnm and found > that it was generated in phiopt (minmax_replacement) and if-conversion > (noce_try_minmax). In the rtl combine, only fminnm can be generated. Is it > necessary for us to improve this optimization in the rtl combine using the > above patch in stage1? Yeah, ifcvt will often do it. combine can handle max just fine as well; you'll need to track down why it doesn't here (I noticed it doesn't as well, it wasn't immediately obvious to me what the difference with the min case is).
