1 /* { dg-do compile } */
2 /* { dg-options "-O1 -fdump-tree-dom2" } */
3 
4 extern void abort (void);
5 
6 union tree_node;
7 typedef union tree_node *tree;
8 enum tree_code
9 {
10   TREE_VEC = 20,
11 };
12 struct tree_common
13 {
14   int code;
15 };
16 struct tree_type
17 {
18   tree binfo;
19 };
20 union tree_node
21 {
22   struct tree_common common;
23   struct tree_type type;
24 };
25 void
record_component_aliases(type)26 record_component_aliases (type)
27      tree type;
28 {
29   const tree __z = type->type.binfo;
30   if (type->type.binfo->common.code != TREE_VEC)
31     abort ();
32 
33   if (__z->common.code != TREE_VEC)
34     abort ();
35 }
36 
37 /* There should be precisely one load of type.binfo.  If there is
38    more than one, then the dominator optimizations failed.  */
39 /* { dg-final { scan-tree-dump-times "type\\.binfo" 1 "dom2"} } */
40 
41 /* There should be precisely one load of common.code.  If there is
42    more than one, then the dominator optimizations failed.  */
43 /* { dg-final { scan-tree-dump-times "common\\.code" 1 "dom2"} } */
44 
45 /* There should be one IF conditional.  */
46 /* { dg-final { scan-tree-dump-times "if " 1 "dom2"} } */
47 
48