New testcase, no PHI should be inserted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17097 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/Mem2Reg/UndefValuesMerge.ll b/test/Transforms/Mem2Reg/UndefValuesMerge.ll
new file mode 100644 (file)
index 0000000..2da7013
--- /dev/null
+++ b/test/Transforms/Mem2Reg/UndefValuesMerge.ll
@@ -0,0 +1,14 @@
+; RUN: llvm-as < %s | opt -mem2reg | llvm-dis | not grep phi
+
+implementation
+
+int %testfunc(bool %C, int %i, sbyte %j) {
+       %I = alloca int
+       br bool %C, label %T, label %Cont
+T:
+       store int %i, int* %I
+       br label %Cont
+Cont:
+       %Y = load int* %I  ;; %Y = phi %i, undef -> %Y = %i
+       ret int %Y
+}