[Bug tree-optimization/126789] Bogus bool vect_recog_mask_conversion_pattern with AVX512 style masks
"rguenth at gcc dot gnu.org via Gcc-bugs" <[email protected]>
| Newsgroups | gmane.comp.gcc.bugs |
|---|---|
| Message-ID | <[email protected]/bugzilla/> |
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126789
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |crazylht at gmail dot com
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
So trying to address the mixed case with 2-lane vectors I face the need to
convert a 2-lane QImode mask to a V2SImode mask, but vcond_mask_v2siqi is
missing, breaking inter-operability even if we do not enable AVX512 style
masking for all 8 byte vectors. So I'd have to do QI -> V2DI -> V2SI
which is a bit awkward to second-guess from inside the vectorizer.