https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103781
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
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Keywords| |missed-optimization
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>Side note: why not ldp in the loop?
Because of the way LDP formation is done, it is just badly done in general
(file a different bug for that). It is a known issue that ldp/stp formation is
not good really.
>As of GCC 11, the AArch64 backend is very greedy in trying to vectorize
>mulv2di3.
No, you are actually seeing SLP happening really and since mul does not exist,
it does not do that.
