Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 32 insertions, 0 deletions

diff --git a/tests/mir-opt/early_otherwise_branch.rs b/tests/mir-opt/early_otherwise_branch.rs
new file mode 100644
index 000000000..7be9fbd03
--- /dev/null
+++ b/tests/mir-opt/early_otherwise_branch.rs
@@ -0,0 +1,32 @@
+// unit-test: EarlyOtherwiseBranch
+// EMIT_MIR early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff
+fn opt1(x: Option<u32>, y: Option<u32>) -> u32 {
+    match (x, y) {
+        (Some(a), Some(b)) => 0,
+        _ => 1,
+    }
+}
+
+// EMIT_MIR early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff
+fn opt2(x: Option<u32>, y: Option<u32>) -> u32 {
+    match (x, y) {
+        (Some(a), Some(b)) => 0,
+        (None, None) => 0,
+        _ => 1,
+    }
+}
+
+// optimize despite different types
+// EMIT_MIR early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff
+fn opt3(x: Option<u32>, y: Option<bool>) -> u32 {
+    match (x, y) {
+        (Some(a), Some(b)) => 0,
+        _ => 1,
+    }
+}
+
+fn main() {
+    opt1(None, Some(0));
+    opt2(None, Some(0));
+    opt3(None, Some(false));
+}