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 /* { dg-final { cleanup-tree-dump "optimized" } } */
   5
   6 char a[40];
   7 struct A { char a[30]; };
   8
   9 void
  10 foo (struct A *p, char *q, char *r)
  11 {
  12   char b[10];
  13   __builtin_memmove (&a[1], &a[19], 20);
  14   __builtin_memmove (&p->a[1], &p->a[9], 10);
  15   __builtin_memmove (q, r, 9);
  16 }