[Bug tree-optimization/105965] [10/11/12 Regression] x86: single-element vectors don't have scalar FMA insns used anymore

pinskia at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue Jun 21 01:52:16 GMT 2022


Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
          Component|target                      |tree-optimization
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=101540

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #2)
> that means we are at least missing a match.pd pattern to simplify
>   _1 = {_10};
>   _11 = VIEW_CONVERT_EXPR<float>(_1);

I had an alternative patch which I had submitted in November:

I never followed up and such. Sorry about that.

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