New testcase for PR86

llvm-svn: 10403

llvm/test/Regression/Transforms/BasicAA/2003-12-11-ConstExprGEP.ll

@@ -0,0 +1,17 @@
+; This testcase consists of alias relations which should be completely
+; resolvable by basicaa, but require analysis of getelementptr constant exprs.
+
+; RUN: llvm-as < %s | opt -aa-eval -print-may-aliases 2>&1 -disable-output | not grep May:
+
+%T = type { uint, [10 x ubyte] }
+
+%G = external global %T
+
+void %test() {
+  %D = getelementptr %T* %G, long 0, ubyte 0
+  %E = getelementptr %T* %G, long 0, ubyte 1, long 5
+  %F = getelementptr uint* getelementptr (%T* %G, long 0, ubyte 0), long 0
+  %G = getelementptr [10 x ubyte]* getelementptr (%T* %G, long 0, ubyte 1), long 0, long 5
+
+  ret void
+}