[Bug tree-optimization/83580] [6/7/8 Regression] Wrong code caused by vectorization

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83580

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Testcase after formatting improvements:
int a[2] = { 0, 1 };
int x = 129;

int
main ()
{
  volatile int v = 0;
  int t = x, i;
  for (i = 0; i < 1 + v + v + v + v + v + v + v + v + a[a[0]]; i++)
    t = a[(signed char) (130 - x)];
  if (t != 1)
    __builtin_abort ();
  return 0;
}