https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117192
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|[15 Regression] wrong code |[15 Regression] wrong code |at -O3 with |at -O3 with |"-fno-unswitch-loops" on |"-fno-unswitch-loops" on |x86_64-linux-gnu |x86_64-linux-gnu since | |r15-4397-g70f59d2a1c51bd --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #1) > I am thinking r15-4397-g70f59d2a1c51bd . Confirmed it is that. Note since aarch64 produces the same IR even with the andn, I am thinking some latent bug in the andn handling. But looking at the .optimized we have: vect__ifc__49.29_73 = MEM <vector(2) int> [(int *)&e + 16B]; But e is not initialized ....