gcc-4.9/gcc/testsuite/gcc.dg/torture/pr56443.c


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/* PR tree-optimization/56443 */
/* { dg-do run } */
/* { dg-options "-ftree-vectorize" } */

extern void abort (void);
typedef int myint __attribute__ ((__aligned__ (16)));

int a1[1024] __attribute__ ((__aligned__ (16)));
int a2[1024] __attribute__ ((__aligned__ (16)));

__attribute__((noinline, noclone)) void
test (int n, myint * __restrict__ p1, myint * __restrict__ p2)
{
  while (n--)
    *p1++ = *p2++ + 1;
}

int
main ()
{
  int n;
  for (n = 0; n < 1024; n++)
    a2[n] = n;
  test (1024, a1, a2);
  for (n = 0; n < 1024; n++)
    if (a1[n] != a2[n] + 1)
      abort ();
  return 0;
}