[Bug tree-optimization/121662] Unnecessary data dependant branches with avx512 masks

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121662

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
I remember we run into this issue in SPEC somewhere where an outer loop
repeatedly triggers fault suppression on a masked store in an inner vectorized
loop.  The code in the vectorizer was contributed by Intel IIRC.

Note fault suppression also happens for paging, not only for actual access
violations.