https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121020
--- Comment #3 from Sam James <sjames at gcc dot gnu.org> --- (In reply to Sam James from comment #2) > Created attachment 61828 [details] > genrecog.ii.xz > > genrecog.o itself is miscompiled. $ g++ -std=c++14 -c -ggdb3 -o build/genrecog.o /tmp/genrecog.ii -O2 -fno-vect-cost-model -mavx is enough, but of course it's not standalone as a runtime testcase.