https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101009
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #3) > Started with r12-145-gd1d01a66012a93cc8cb7dafbe1b5ec453ec96b59 Hmm, that "caused" the issue at -O3 -fno-tree-sra -fno-strict-aliasing but reverting it doesn't fix the same issue appearing with -O2 -fno-tree-sra -fno-tree-pre -ftree-loop-distribution, so it isn't really the cause.