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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/114566] Misaligned vmovaps when compiling with
 stack-protector-strong for znver4
Date: Thu, 04 Apr 2024 15:22:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114566

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
                 CC|                            |jakub at gcc dot gnu.org
   Last reconfirmed|2024-04-02 00:00:00         |2024-04-04

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
With -O3 -mavx512{bw,dq,vl} -fstack-protector-strong on
void
foo (float x, float y)
{
  float a[8][56];
  __builtin_memset (a, 0, sizeof (a));

  for (int j =3D 0; j < 8; j++)
    {
      for (int k =3D 0; k < 56; k++)
        {
          float b =3D k * y;
          if (b < 0.)
            b =3D 0.;
          if (b > 0.)
            b =3D 0.;
          a[j][k] +=3D b;
        }
    }

  int c =3D __builtin_log (x);
}

int
main ()
{
  foo (86.1328125, 0.625001);
  return 0;
}
this started with r10-4263-g1297712fb4af6c6bfd827e0f0a9695b14669f87d
and went away on the trunk with
r14-2487-g574a1ea4406dd1dbf14e149a9b5d142f6cbdf32a=