https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64099
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2014-11-28 Ever confirmed|0 |1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- I don't see this on any of our testers. What CPU do you have and what default -march gets used for you? (thus please show -v output) Btw, -flto should be redundant for a single-file benchmark - -fwhole-program is enough. Does -ftree-loop-linear make a difference for you? Our testers use -ffast-math -funroll-loops -O3. Can you bisect the regressions to a single commit?