1 files changed, 13 insertions, 0 deletions
diff --git a/tests/codegen-llvm/alloc-optimisation.rs b/tests/codegen-llvm/alloc-optimisation.rs
new file mode 100644
index 00000000000..3735860d510
--- /dev/null
+++ b/tests/codegen-llvm/alloc-optimisation.rs
@@ -0,0 +1,13 @@
+//@ compile-flags: -Copt-level=3
+#![crate_type = "lib"]
+
+#[no_mangle]
+pub fn alloc_test(data: u32) {
+    // CHECK-LABEL: @alloc_test
+    // CHECK-NEXT: start:
+    // CHECK-NEXT: ; call __rustc::__rust_no_alloc_shim_is_unstable_v2
+    // CHECK-NEXT: tail call void @_R{{.+}}__rust_no_alloc_shim_is_unstable_v2()
+    // CHECK-NEXT: ret void
+    let x = Box::new(data);
+    drop(x);
+}