gcc/testsuite/gcc.dg/graphite/pr42917.c

/* { dg-do compile } */
/* { dg-options "-O1 -ftree-loop-linear -fcompare-debug" } */
/* { dg-xfail-if "" { powerpc-ibm-aix* } } */

extern int A[];

void
foo ()
{
  int i, j;
  for (i = 0; i < 4; i++)
    for (j = 255; j >= 0; j--)
      A[j] = 0;
}