1 /* { dg-do compile } */
2 /* { dg-options "-O -fdump-tree-fre1" } */
3 
4 /* FRE should be able to combine i and j and perform simplification
5    on the condition.  */
6 
7 extern void link_error (void);
8 int i;
foo(int b,int c)9 int foo(int b, int c)
10 {
11   i = b + 1;
12   int j = i - 1;
13   if (b != j)
14     link_error ();
15 }
16 
17 /* { dg-final { scan-tree-dump-not "link_error" "fre1" } } */
18