1 /* { dg-do compile } */
2 /* { dg-options "-O1 -fdump-tree-optimized" } */
3 
4 extern void link_error (void);
5 
6 void
foo(int b)7 foo (int b)
8 {
9   int a;
10   a = b + 2;
11   a--;
12   a--;
13   if (a != b)
14     link_error ();
15 }
16 
17 /* The comparison should be eliminated, there should be no reference
18    to link_error.  */
19 /* { dg-final { scan-tree-dump-times "link_error" 0 "optimized"} } */
20