gcc/testsuite/g++.dg/tree-ssa/empty-1.C

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 struct S {};
   5 S bar (const S &a)
   6 {
   7   S s;
   8   s = a;
   9   return s;
  10 }
  11
  12 /* Test whether memcpy call has been optimized out.  */
  13 /* { dg-final { scan-tree-dump-times "memcpy" 0 "optimized"} } */