https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68775
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rguenth at gcc dot gnu.org --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Can you try to bisect to an affected source file (just use -fno-tree-vectorize on all but one) and there to whether it is basic-block or loop vectorization (-fno-tree-loop-vectorize / -fno-tree-slp-vectorize) and specific loop/basic-block with -fdbg-cnt=vect_slp:N or -fdbg-cnt=vect_loop:N? Note that it seems that tonto also fails (since forever) with AVX2 on x86_64.