[Bug tree-optimization/114164] simdclone vectorization creates unsupported IL

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114164

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2024-03-01

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ah, yes - we're not trying to do anything special if the mask and arg mask
types have different size - we can handle different number of lanes but we
don't
try any widening/shortening tricks to make the size match.

That said, it looks like we definitely should verify in the vectorizer that
we can handle the VEC_COND_EXPR.

As of trick missing, we could do v4si ? v4sf : v4sf and then widen to v4df
or widen v4si to v4di.  Possibly the target could know what's more efficient
here.

Mine for adding the missing support check.