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-rw-r--r--gcc/testsuite/gcc.dg/tree-ssa/20030814-5.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/20030814-5.c b/gcc/testsuite/gcc.dg/tree-ssa/20030814-5.c
new file mode 100644
index 00000000000..bab21a3cae8
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/20030814-5.c
@@ -0,0 +1,40 @@
+/* { dg-do compile } */
+/* { dg-options "-O1 -fdump-tree-dom3 -fdump-tree-optimized" } */
+
+union tree_node;
+typedef union tree_node *tree;
+extern const char tree_code_type[];
+struct tree_common
+{
+ int code;
+};
+struct tree_decl
+{
+ long pointer_alias_set;
+};
+union tree_node
+{
+ struct tree_common common;
+ struct tree_decl decl;
+};
+long
+blah (decl, set)
+ tree decl;
+ long set;
+{
+ decl->decl.pointer_alias_set = oof();
+ if (tree_code_type[decl->common.code] != 'd')
+ abort ();
+ record_alias_subset (decl->decl.pointer_alias_set);
+ if (set != -1)
+ set = 0;
+ return set;
+}
+
+/* There should be precisely one reference to pointer_alias_set. If there is
+ more than one, then the dominator optimizations failed. */
+/* { dg-final { scan-tree-dump-times "pointer_alias_set" 1 "dom3"} } */
+
+/* The assignment set = -1 in the ELSE clause of the last IF
+ statement should be removed by the final cleanup phase. */
+/* { dg-final { scan-tree-dump-times "set = -1" 0 "optimized"} } */