1 files changed, 27 insertions, 0 deletions
diff --git a/tests/codegen-llvm/enum/enum-bounds-check.rs b/tests/codegen-llvm/enum/enum-bounds-check.rs
new file mode 100644
index 00000000000..5362598ca7c
--- /dev/null
+++ b/tests/codegen-llvm/enum/enum-bounds-check.rs
@@ -0,0 +1,27 @@
+//@ compile-flags: -Copt-level=3
+
+#![crate_type = "lib"]
+
+pub enum Foo {
+    A,
+    B,
+}
+
+// CHECK-LABEL: @lookup
+#[no_mangle]
+pub fn lookup(buf: &[u8; 2], f: Foo) -> u8 {
+    // CHECK-NOT: panic_bounds_check
+    buf[f as usize]
+}
+
+pub enum Bar {
+    A = 2,
+    B = 3,
+}
+
+// CHECK-LABEL: @lookup_unmodified
+#[no_mangle]
+pub fn lookup_unmodified(buf: &[u8; 5], f: Bar) -> u8 {
+    // CHECK-NOT: panic_bounds_check
+    buf[f as usize]
+}