Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 34 insertions, 0 deletions

diff --git a/tests/mir-opt/matches_u8.rs b/tests/mir-opt/matches_u8.rs
new file mode 100644
index 000000000..422c3a95e
--- /dev/null
+++ b/tests/mir-opt/matches_u8.rs
@@ -0,0 +1,34 @@
+// unit-test: MatchBranchSimplification
+
+
+// EMIT_MIR matches_u8.exhaustive_match.MatchBranchSimplification.diff
+// EMIT_MIR matches_u8.exhaustive_match_i8.MatchBranchSimplification.diff
+
+pub enum E {
+    A,
+    B,
+}
+
+#[no_mangle]
+pub fn exhaustive_match(e: E) -> u8 {
+    match e {
+        E::A => 0,
+        E::B => 1,
+    }
+}
+
+#[no_mangle]
+pub fn exhaustive_match_i8(e: E) -> i8 {
+    match e {
+        E::A => 0,
+        E::B => 1,
+    }
+}
+
+fn main() {
+  assert_eq!(exhaustive_match(E::A), 0);
+  assert_eq!(exhaustive_match(E::B), 1);
+
+  assert_eq!(exhaustive_match_i8(E::A), 0);
+  assert_eq!(exhaustive_match_i8(E::B), 1);
+}