https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78558
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Depends on| |66598 --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- See also the related PR66598, fixed by the same commit. Not 100% sure it's a duplicate but there I tried backporting the relevant change and have up because of the large amount of changes required. Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66598 [Bug 66598] [5 Regression] With -O3 gcc incorrectly assumes aligned SSE instructions (e.g. movapd) can be used