1 files changed, 15 insertions, 0 deletions
diff --git a/test/Analysis/BasicAA/2003-04-22-GEPProblem.ll b/test/Analysis/BasicAA/2003-04-22-GEPProblem.ll
new file mode 100644
index 0000000..ddadc8e
--- /dev/null
+++ b/test/Analysis/BasicAA/2003-04-22-GEPProblem.ll
@@ -0,0 +1,15 @@
+; RUN: llvm-upgrade < %s | llvm-as | opt -load-vn -gcse -instcombine | llvm-dis | grep sub
+
+; BasicAA was incorrectly concluding that P1 and P2 didn't conflict!
+
+int %test(int *%Ptr, long %V) {
+	%P2 = getelementptr int* %Ptr, long 1
+	%P1 = getelementptr int* %Ptr, long %V
+	%X = load int* %P1
+	store int 5, int* %P2
+
+	%Y = load int* %P1
+
+	%Z = sub int %X, %Y
+	ret int %Z
+}