https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65935
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> --- Also reproduces with -Ofast -march=bdver2 -m32 so I suppose -O3 -ffast-math -m32 -msse2 should also reproduce it. I wont get to look into this before Monday, any help in bisecting (-fno-tree-vectorize for which file(s) fix it? for which function?) appreciated until then. At least milc is C and not too big ;)