gcc/testsuite/gcc.dg/tree-ssa/20031021-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-optimized" } */
   3
   4 struct A
   5 {
   6   int i : 8;
   7 };
   8
   9 signed char c1, c2;
  10 struct A a;
  11
  12 int main()
  13 {
  14   a.i = c1;
  15   c2 = a.i;
  16   return a.i;
  17 }
  18
  19 /* We should only store to a.i, not load from it.  */
  20 /* { dg-final { scan-tree-dump-not "= a.i" "optimized" } } */