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

   1 /* PR tree-optimization/56443 */
   2 /* { dg-do run } */
   3 /* { dg-options "-ftree-vectorize" } */
   4
   5 extern void abort (void);
   6 typedef int myint __attribute__ ((__aligned__ (16)));
   7
   8 int a1[1024] __attribute__ ((__aligned__ (16)));
   9 int a2[1024] __attribute__ ((__aligned__ (16)));
  10
  11 __attribute__((noinline, noclone)) void
  12 test (int n, myint * __restrict__ p1, myint * __restrict__ p2)
  13 {
  14   while (n--)
  15     *p1++ = *p2++ + 1;
  16 }
  17
  18 int
  19 main ()
  20 {
  21   int n;
  22   for (n = 0; n < 1024; n++)
  23     a2[n] = n;
  24   test (1024, a1, a2);
  25   for (n = 0; n < 1024; n++)
  26     if (a1[n] != a2[n] + 1)
  27       abort ();
  28   return 0;
  29 }