Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/mir-opt/dest-prop/unreachable.rs b/tests/mir-opt/dest-prop/unreachable.rs
new file mode 100644
index 000000000..32b5def98
--- /dev/null
+++ b/tests/mir-opt/dest-prop/unreachable.rs
@@ -0,0 +1,18 @@
+// Check that unreachable code is removed after the destination propagation.
+// Regression test for issue #105428.
+//
+// compile-flags: --crate-type=lib -Zmir-opt-level=0
+// compile-flags: -Zmir-enable-passes=+ConstProp,+SimplifyConstCondition-after-const-prop,+DestinationPropagation
+
+// EMIT_MIR unreachable.f.DestinationPropagation.diff
+pub fn f<T: Copy>(a: T) {
+    let b = a;
+    if false {
+        g(a, b);
+    } else {
+        g(b, b);
+    }
+}
+
+#[inline(never)]
+pub fn g<T: Copy>(_: T, _: T) {}