[Bug tree-optimization/69823] [6/7 Regression] internal compiler error: in create_pw_aff_from_tree, at graphite-sese-to-poly.c:445

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69823

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vries at gcc dot gnu.org

--- Comment #5 from Tom de Vries <vries at gcc dot gnu.org> ---
Test-case minimized from PR68279:
...
void
foo (int c, int *p, int *a1, int *a2, int *a3)
{
  int i;

  if (c)
    {
      for (i = 0; i < 8; i++)
        a1[i] = 1;

      if (*p)
        *a2 = 0;
    }

  for (i = 0; i < 8; i++)
    a3[i] = 0;
}
...

Fails on x86_64:
...
$ gcc pr-graphite.c -O2 -fgraphite-identity 
pr-graphite.c: In function ‘foo’:
pr-graphite.c:2:1: internal compiler error: in create_pw_aff_from_tree, at
graphite-sese-to-poly.c:445
...