gcc/testsuite/gcc.dg/tree-ssa/forwprop-21.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-cddce1 -fno-tree-fre" } */
   3 typedef int v4si __attribute__ ((vector_size (4 * sizeof(int))));
   4
   5 int
   6 test (v4si *x, v4si *y)
   7 {
   8   v4si m = { 2, 3, 6, 5 };
   9   v4si z = __builtin_shuffle (*x, *y, m);
  10   return z[2];
  11 }
  12
  13 /* Optimization in forwprop1, cleanup in cddce1.  */
  14
  15 /* { dg-final { scan-tree-dump-not "VEC_PERM_EXPR" "cddce1" } } */