gcc/testsuite/gcc.dg/fold-perm-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-fre1" } */
   3
   4 typedef int veci __attribute__ ((vector_size (4 * sizeof (int))));
   5 typedef unsigned int vecu __attribute__ ((vector_size (4 * sizeof (unsigned int))));
   6
   7 void fun (veci *a, veci *b, veci *c)
   8 {
   9   veci r1 = __builtin_shufflevector (*a, *b, 0, 5, 2, 7);
  10   vecu r2 = __builtin_convertvector (r1, vecu);
  11   vecu r3 = __builtin_shufflevector (r2, r2, 2, 3, 1, 0);
  12   *c = __builtin_convertvector (r3, veci);
  13 }
  14
  15 /* { dg-final { scan-tree-dump "VEC_PERM_EXPR.*{ 2, 7, 5, 0 }" "fre1" } } */
  16 /* { dg-final { scan-tree-dump-times "VEC_PERM_EXPR" 1 "fre1" } } */