gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-17.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-dse1" } */
   3
   4 struct s1 {
   5     unsigned short f1;
   6     unsigned char f2;
   7 };
   8
   9 struct s2 {
  10     struct s1 *p1;
  11 };
  12
  13 void f1(struct s2 *p)
  14 {
  15   p->p1->f2 = 9;
  16   p->p1->f2 = 10;
  17 }
  18
  19 /* { dg-final { scan-tree-dump-times "f2 =" 1 "dse1" } } */