1 files changed, 32 insertions, 0 deletions
diff --git a/test/Transforms/ADCE/2002-05-23-ZeroArgPHITest.ll b/test/Transforms/ADCE/2002-05-23-ZeroArgPHITest.ll
new file mode 100644
index 000000000000..911f8e678b35
--- /dev/null
+++ b/test/Transforms/ADCE/2002-05-23-ZeroArgPHITest.ll
@@ -0,0 +1,32 @@
+; This testcase contains a entire loop that should be removed.  The only thing
+; left is the store instruction in BB0.  The problem this testcase was running
+; into was that when the reg109 PHI was getting zero predecessors, it was 
+; removed even though there were uses still around.  Now the uses are filled
+; in with a dummy value before the PHI is deleted.
+;
+; RUN: llvm-as < %s | opt -adce
+	
+        %node_t = type { double*, %node_t*, %node_t**, double**, double*, i32, i32 }
+
+define void @localize_local(%node_t* %nodelist) {
+bb0:
+        %nodelist.upgrd.1 = alloca %node_t*             ; <%node_t**> [#uses=2]
+        store %node_t* %nodelist, %node_t** %nodelist.upgrd.1
+        br label %bb1
+
+bb1:            ; preds = %bb0
+        %reg107 = load %node_t** %nodelist.upgrd.1              ; <%node_t*> [#uses=2]
+        %cond211 = icmp eq %node_t* %reg107, null               ; <i1> [#uses=1]
+        br i1 %cond211, label %bb3, label %bb2
+
+bb2:            ; preds = %bb2, %bb1
+        %reg109 = phi %node_t* [ %reg110, %bb2 ], [ %reg107, %bb1 ]             ; <%node_t*> [#uses=1]
+        %reg212 = getelementptr %node_t* %reg109, i64 0, i32 1          ; <%node_t**> [#uses=1]
+        %reg110 = load %node_t** %reg212                ; <%node_t*> [#uses=2]
+        %cond213 = icmp ne %node_t* %reg110, null               ; <i1> [#uses=1]
+        br i1 %cond213, label %bb2, label %bb3
+
+bb3:            ; preds = %bb2, %bb1
+        ret void
+}
+