https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79058
--- Comment #5 from Arnd Bergmann <arnd at linaro dot org> --- Created attachment 40511 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40511&action=edit rtl dump 256r.ed_dce and 257r.combine Here are four dumps, I hope this is what you are asking for: latest gcc (trunk@243588) building the minimized test case minimized.c.256r.ud_dce minimized.c.257r.combine same test after reverting trunk@243578, which fixes the problem for me: minimized.c.256r.ud_dce-revert minimized.c.257r.combine-revert
