[Bug target/105922] autovectorizer does not handle fp exceptions correctly for SVE

pinskia at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Sun Jun 12 21:07:05 GMT 2022


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

           What    |Removed                     |Added
            Summary|AArch64 SVE instruction     |autovectorizer does not
                   |generated with all SIMD     |handle fp exceptions
                   |lane active and zero-divide |correctly for SVE
                   |exception flag raised       |
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2022-06-12

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed. The division should have been predicated on the same as the
load/store but currently GCC does not do that.

GCC does not really support looking into fpu status bits or exceptions while
vectorizing either.

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