gcc/testsuite/gcc.dg/torture/vector-shuffle1.c

   1 /* PR54219 */
   2 /* { dg-do run } */
   3
   4 extern void abort (void);
   5
   6 typedef int v2si __attribute__((vector_size(2*sizeof(int))));
   7
   8 void f(v2si *x)
   9 {
  10   /* This requires canonicalization of the mask to { 1, 0 }.  */
  11   *x = __builtin_shuffle(*x, *x, (v2si) { 5, 0 });
  12 }
  13
  14 int main()
  15 {
  16   v2si y = { 1, 2 };
  17   f(&y);
  18   if (y[0] != 2 || y[1] != 1)
  19     abort ();
  20   return 0;
  21 }