1 files changed, 20 insertions, 0 deletions
diff --git a/llvm/test/Transforms/TailDup/PHIUpdateTest.ll b/llvm/test/Transforms/TailDup/PHIUpdateTest.ll
new file mode 100644
index 00000000000..ae591a00be5
--- /dev/null
+++ b/llvm/test/Transforms/TailDup/PHIUpdateTest.ll
@@ -0,0 +1,20 @@
+; This test checks to make sure phi nodes are updated properly
+;
+; RUN: llvm-upgrade < %s | llvm-as | opt -tailduplicate -disable-output
+
+
+
+int %test(bool %c, int %X, int %Y) {
+	br label %L
+
+L:
+	%A = add int %X, %Y
+	br bool %c, label %T, label %F
+
+F:
+	br bool %c, label %L, label %T
+
+T:
+	%V = phi int [%A, %L], [0, %F]
+	ret int %V
+}