1 files changed, 20 insertions, 0 deletions
diff --git a/tests/mir-opt/unreachable.rs b/tests/mir-opt/unreachable.rs
new file mode 100644
index 000000000..6098b525b
--- /dev/null
+++ b/tests/mir-opt/unreachable.rs
@@ -0,0 +1,20 @@
+enum Empty {}
+
+fn empty() -> Option<Empty> {
+    None
+}
+
+// EMIT_MIR unreachable.main.UnreachablePropagation.diff
+fn main() {
+    if let Some(_x) = empty() {
+        let mut _y;
+
+        if true {
+            _y = 21;
+        } else {
+            _y = 42;
+        }
+
+        match _x { }
+    }
+}