https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88459
ktkachov at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |missed-optimization Status|UNCONFIRMED |NEW Last reconfirmed| |2018-12-12 CC| |ktkachov at gcc dot gnu.org Blocks| |53947 Ever confirmed|0 |1 Known to fail| |9.0 --- Comment #1 from ktkachov at gcc dot gnu.org --- Confirmed on aarch64 and x86_64. Is it because GCC is afraid of signed overflow or something? Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 [Bug 53947] [meta-bug] vectorizer missed-optimizations