https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97821
H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Target Milestone|--- |8.5 Last reconfirmed| |2020-11-14 Summary|wrong code with |[8/9/10/11 Regression] |-ftree-vectorize at -O1 on |wrong code with |x86_64-pc-linux-gnu |-ftree-vectorize at -O1 on | |x86_64-pc-linux-gnu by | |r6-3608 CC| |hjl.tools at gmail dot com, | |law at redhat dot com --- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> --- It was caused by r6-3608.