[Bug tree-optimization/120980] Vectorizer (early exit) introduces out-of-bounds memory access

[tnfchris at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120980

--- Comment #10 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Could we perhaps emit additional annotation into gimple to describe what the
vectorizer thinks is safe? And the tool verifies the claims?