1 files changed, 39 insertions, 0 deletions
diff --git a/tests/codegen/asm-may_unwind.rs b/tests/codegen/asm-may_unwind.rs
new file mode 100644
index 000000000..c97933035
--- /dev/null
+++ b/tests/codegen/asm-may_unwind.rs
@@ -0,0 +1,39 @@
+// compile-flags: -O
+// only-x86_64
+
+#![crate_type = "rlib"]
+#![feature(asm_unwind)]
+
+use std::arch::asm;
+
+#[no_mangle]
+pub extern "C" fn panicky() {}
+
+struct Foo;
+
+impl Drop for Foo {
+    fn drop(&mut self) {
+        println!();
+    }
+}
+
+// CHECK-LABEL: @asm_may_unwind
+#[no_mangle]
+pub unsafe fn asm_may_unwind() {
+    let _m = Foo;
+    // CHECK: invoke void asm sideeffect alignstack inteldialect unwind ""
+    asm!("", options(may_unwind));
+}
+
+// CHECK-LABEL: @asm_with_result_may_unwind
+#[no_mangle]
+pub unsafe fn asm_with_result_may_unwind() -> u64 {
+    let _m = Foo;
+    let res: u64;
+    // CHECK: [[RES:%[0-9]+]] = invoke i64 asm sideeffect alignstack inteldialect unwind
+    // CHECK-NEXT: to label %[[NORMALBB:[a-b0-9]+]]
+    asm!("mov {}, 1", out(reg) res, options(may_unwind));
+    // CHECK: [[NORMALBB]]:
+    // CHECK: ret i64 [[RES:%[0-9]+]]
+    res
+}