1 /* { dg-do compile } */ 2 /* { dg-options "-O -fdump-tree-forwprop1" } */ 3 4 typedef int vec __attribute__((vector_size (4 * sizeof (int)))); f(vec * x1,vec * x2)5void f (vec *x1, vec *x2) 6 { 7 vec m = { 1, 2, 3, 0 }; 8 vec n = { 3, 0, 1, 2 }; 9 vec y = __builtin_shuffle (*x1, *x2, n); 10 vec z = __builtin_shuffle (y, m); 11 *x1 = z; 12 } 13 14 /* { dg-final { scan-tree-dump-not "VEC_PERM_EXPR" "forwprop1" } } */ 15