testcase for br undef folding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60471 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/JumpThreading/undef.ll b/test/Transforms/JumpThreading/undef.ll
new file mode 100644 (file)
index 0000000..497a87a
--- /dev/null
+++ b/test/Transforms/JumpThreading/undef.ll
@@ -0,0 +1,12 @@
+; RUN: llvm-as < %s | opt -jump-threading | llvm-dis | not grep {br }
+; RUN: llvm-as < %s | opt -jump-threading | llvm-dis | grep {ret i32} | count 1
+
+define i32 @test(i1 %cond) {
+       br i1 undef, label %T1, label %F1
+
+T1:
+       ret i32 42
+
+F1:
+       ret i32 17
+}