From 86dbcb53907037dcc3fabb635956aec2c384b4e9 Mon Sep 17 00:00:00 2001
From: Camille GILLOT <gillot.camille@gmail.com>
Date: Sat, 11 Feb 2023 08:59:19 +0000
Subject: [PATCH] Add codegen test.

---
 tests/codegen/inherit_overflow.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 tests/codegen/inherit_overflow.rs

diff --git a/tests/codegen/inherit_overflow.rs b/tests/codegen/inherit_overflow.rs
new file mode 100644
index 00000000000..d938dadb9c7
--- /dev/null
+++ b/tests/codegen/inherit_overflow.rs
@@ -0,0 +1,14 @@
+// compile-flags: -Zmir-enable-passes=+Inline,+ConstProp --crate-type lib
+// revisions: ASSERT NOASSERT
+//[ASSERT] compile-flags: -Coverflow-checks=on
+//[NOASSERT] compile-flags: -Coverflow-checks=off
+
+// CHECK-LABEL: define{{.*}} @assertion
+// ASSERT: tail call void @_ZN4core9panicking5panic17h
+// NOASSERT: ret i8 0
+#[no_mangle]
+pub fn assertion() -> u8 {
+    // Optimized MIR will replace this `CheckedBinaryOp` by `const (0, true)`.
+    // Verify that codegen does or does not emit the panic.
+    <u8 as std::ops::Add>::add(255, 1)
+}