1 files changed, 31 insertions, 0 deletions
diff --git a/tests/codegen/naked-fn/naked-noinline.rs b/tests/codegen/naked-fn/naked-noinline.rs
new file mode 100644
index 000000000..5cfb500c0
--- /dev/null
+++ b/tests/codegen/naked-fn/naked-noinline.rs
@@ -0,0 +1,31 @@
+// Checks that naked functions are never inlined.
+// compile-flags: -O -Zmir-opt-level=3
+// needs-asm-support
+// ignore-wasm32
+#![crate_type = "lib"]
+#![feature(naked_functions)]
+
+use std::arch::asm;
+
+#[naked]
+#[no_mangle]
+pub unsafe extern "C" fn f() {
+    // Check that f has naked and noinline attributes.
+    //
+    // CHECK:       define {{(dso_local )?}}void @f() unnamed_addr [[ATTR:#[0-9]+]]
+    // CHECK-NEXT:  start:
+    // CHECK-NEXT:    call void asm
+    asm!("", options(noreturn));
+}
+
+#[no_mangle]
+pub unsafe fn g() {
+    // Check that call to f is not inlined.
+    //
+    // CHECK-LABEL: define {{(dso_local )?}}void @g()
+    // CHECK-NEXT:  start:
+    // CHECK-NEXT:    call void @f()
+    f();
+}
+
+// CHECK: attributes [[ATTR]] = { naked{{.*}}noinline{{.*}} }