New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12640 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Analysis/LoadVN/undefined_load.ll b/test/Analysis/LoadVN/undefined_load.ll
new file mode 100644 (file)
index 0000000..9f01d24
--- /dev/null
+++ b/test/Analysis/LoadVN/undefined_load.ll
@@ -0,0 +1,14 @@
+; RUN: llvm-as < %s | opt -load-vn -gcse | llvm-dis | not grep load
+; Test that loads of undefined memory are eliminated.
+
+int %test1() {
+       %X = malloc int
+       %Y = load int* %X
+       ret int %Y
+}
+int %test2() {
+       %X = alloca int
+       %Y = load int* %X
+       ret int %Y
+}
+