https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83126
--- Comment #8 from Tom de Vries <vries at gcc dot gnu.org> --- Created attachment 43476 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43476&action=edit Tentative patch (In reply to rguent...@suse.de from comment #3) > This is the usual "you should not repeat analysis during transform" issue. > The vectorizer gets around this by caching relevant scalar evolution > but obviously that's difficult if using generic stuff like > canonicalize_loop_ivs ... This patch caches affine_iv info before calling loop_version, and then uses that cached info in canonicalize_loop_ivs. This fixes the ICE.
