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List:       gcc-bugs
Subject:    [Bug target/65951] [AArch64] Will not vectorize 64bit integer multiplication
From:       "pinskia at gcc dot gnu.org" <gcc-bugzilla () gcc ! gnu ! org>
Date:       2015-04-30 18:55:54
Message-ID: bug-65951-4-AwU4c75L6z () http ! gcc ! gnu ! org/bugzilla/
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65951

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-04-30
            Summary|[AArch64] Will not          |[AArch64] Will not
                   |vectorize multiplication by |vectorize 64bit integer
                   |long constant               |multiplication
     Ever confirmed|0                           |1

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Another example which shows the problem is not related to the constant but just
the multiply:
void
foo (long long * restrict arr, long long * restrict arr1)
{
  for (int i = 0; i < 256; i++)
    arr[i] *= arr1[i];
}
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