https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88784
--- Comment #23 from Li Jia He <helijia at gcc dot gnu.org> --- Created attachment 46477 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46477&action=edit try to fix this issue in ifcombine(and_comparisons_1 and or_comparisons_1) I am trying to solve this issue directly in ifcombine. Would you like to help me see what kind of question this patch might have ?