https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90579
H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Huge store forward stall |[8/9/10] Huge store forward |due to vectorizer |stall due to vectorizer --- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> --- GCC 7 doesn't have this problem since it doesn't vectorize the second loop.