1 files changed, 44 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/20030703-2.c b/gcc/testsuite/gcc.dg/tree-ssa/20030703-2.c
new file mode 100644
index 000000000..4a64b90db
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/20030703-2.c
@@ -0,0 +1,44 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -fdump-tree-dom2" } */
+
+extern void abort (void);
+
+union tree_node;
+typedef union tree_node *tree;
+extern const char tree_code_type[];
+
+union tree_node
+{
+  int code;
+  long pointer_alias_set;
+};
+
+long
+get_alias_set (t)
+     tree t;
+{
+  if (tree_code_type[t->code])
+    abort ();
+  if (t->pointer_alias_set)
+    {
+      tree __t = t;
+      if (tree_code_type[__t->code])
+	abort ();
+    }
+}
+
+/* There should be precisely one load of {t,__t}->code.  If there is
+   more than one, then the dominator optimizations failed.  */
+/* { dg-final { scan-tree-dump-times "->code" 1 "dom2"} } */
+                                                                                
+/* There should be precisely one load of tree_code_type.  If there is
+   more than one, then the dominator optimizations failed.  */
+/* { dg-final { scan-tree-dump-times "tree_code_type" 1 "dom2"} } */
+
+/* There should be one IF conditional.  If 'tree_code_type[t->code]' is
+   zero, then the third if() conditional is unnecessary.  That should cause
+   the call to abort() to be removed, which in turn causes the whole second
+   if() to disappear.  */
+/* { dg-final { scan-tree-dump-times "if " 1 "dom2"} } */
+
+/* { dg-final { cleanup-tree-dump "dom2" } } */