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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/110456] vectorization with loop masking prone to STLF
 issues
Date: Wed, 28 Jun 2023 13:25:14 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110456

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Correction, the testcase should look like

void __attribute__((noipa))
test (double * __restrict a, double *b, int n, int m)
{
  for (int j =3D 0; j < m; ++j)
    for (int i =3D 0; i < n; ++i)
      a[i + j*n] =3D a[i + j*n /* + 512 */] + b[i + j*n];
}

double a[1024];
double b[1024];

int main(int argc, char **argv)
{
  int m =3D atoi (argv[1]);
  for (long i =3D 0; i < m; ++i)
    test (a + 4, b + 4, 4, 1024/4);
  return 0;
}=