Add a simple test to make sure getModRefInfo is 1/2 way sane.

llvm-svn: 31842

llvm/test/Regression/Analysis/BasicAA/modref.ll

@@ -0,0 +1,12 @@
+; RUN: llvm-as < %s | opt -print-all-alias-modref-info -aa-eval -disable-output 2>&1 | not grep NoModRef
+
+int %callee() {
+  %X = alloca struct { int, int }
+  %Y = int* getelementptr struct { int, int }*, uint 1
+  %Z = int load struct { int, int }*
+  ret %Z
+}
+
+int %caller() {
+  %X = int callee();
+}