gcc/testsuite/gcc.dg/memmove-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3 /* { dg-final { scan-tree-dump-times "memmove" 3 "optimized" } } */
   4
   5 char a[40];
   6 struct A { char a[30]; };
   7
   8 void
   9 foo (struct A *p, char *q, char *r)
  10 {
  11   char b[10];
  12   __builtin_memmove (&a[1], &a[19], 20);
  13   __builtin_memmove (&p->a[1], &p->a[9], 10);
  14   __builtin_memmove (q, r, 9);
  15 }