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diff --git a/test/Transforms/Reassociate/2002-05-15-SubReassociate.ll b/test/Transforms/Reassociate/2002-05-15-SubReassociate.ll
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--- /dev/null
+++ b/test/Transforms/Reassociate/2002-05-15-SubReassociate.ll
@@ -0,0 +1,11 @@
+; With sub reassociation, constant folding can eliminate all of the constants.
+;
+; RUN: llvm-upgrade < %s | llvm-as | opt -reassociate -constprop -instcombine -dce | llvm-dis | not grep add
+
+int %test(int %A, int %B) {
+	%W = add int 5, %B
+	%X = add int -7, %A
+	%Y = sub int %X, %W
+	%Z = add int %Y, 12
+	ret int %Z
+}