From 631cd5845e8de329d0e227aaa707d7ea228b8f8f Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:20:29 +0200
Subject: Merging upstream version 1.70.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../simplify_duplicate_unreachable_blocks.rs       | 30 ++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 tests/mir-opt/simplify_duplicate_unreachable_blocks.rs

(limited to 'tests/mir-opt/simplify_duplicate_unreachable_blocks.rs')

diff --git a/tests/mir-opt/simplify_duplicate_unreachable_blocks.rs b/tests/mir-opt/simplify_duplicate_unreachable_blocks.rs
new file mode 100644
index 000000000..e2578407f
--- /dev/null
+++ b/tests/mir-opt/simplify_duplicate_unreachable_blocks.rs
@@ -0,0 +1,30 @@
+#![feature(custom_mir, core_intrinsics)]
+#![crate_type = "lib"]
+
+use std::intrinsics::mir::*;
+
+// unit-test: SimplifyCfg-after-uninhabited-enum-branching
+
+// EMIT_MIR simplify_duplicate_unreachable_blocks.assert_nonzero_nonmax.SimplifyCfg-after-uninhabited-enum-branching.diff
+#[custom_mir(dialect = "runtime", phase = "post-cleanup")]
+pub unsafe fn assert_nonzero_nonmax(x: u8) -> u8 {
+    mir!(
+        {
+            match x {
+                0 => unreachable1,
+                u8::MAX => unreachable2,
+                _ => retblock,
+            }
+        }
+        unreachable1 = {
+            Unreachable()
+        }
+        unreachable2 = {
+            Unreachable()
+        }
+        retblock = {
+            RET = x;
+            Return()
+        }
+    )
+}
-- 
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