1 files changed, 49 insertions, 0 deletions
diff --git a/tests/codegen-llvm/repr/transparent-sysv64.rs b/tests/codegen-llvm/repr/transparent-sysv64.rs
new file mode 100644
index 00000000000..3efc3f7c391
--- /dev/null
+++ b/tests/codegen-llvm/repr/transparent-sysv64.rs
@@ -0,0 +1,49 @@
+//@ add-core-stubs
+//@ revisions: linux apple win
+//@ compile-flags: -Copt-level=3 -C no-prepopulate-passes
+
+//@[linux] compile-flags: --target x86_64-unknown-linux-gnu
+//@[linux] needs-llvm-components: x86
+//@[apple] compile-flags: --target x86_64-apple-darwin
+//@[apple] needs-llvm-components: x86
+//@[win] compile-flags: --target x86_64-pc-windows-msvc
+//@[win] needs-llvm-components: x86
+
+#![feature(no_core, lang_items)]
+#![crate_type = "lib"]
+#![no_std]
+#![no_core]
+
+extern crate minicore;
+use minicore::*;
+
+#[repr(C)]
+pub struct Rgb8 {
+    r: u8,
+    g: u8,
+    b: u8,
+}
+
+#[repr(transparent)]
+pub struct Rgb8Wrap(Rgb8);
+
+// CHECK: i24 @test_Rgb8Wrap(i24{{( %0)?}})
+#[no_mangle]
+pub extern "sysv64" fn test_Rgb8Wrap(_: Rgb8Wrap) -> Rgb8Wrap {
+    loop {}
+}
+
+#[repr(C)]
+pub union FloatBits {
+    float: f32,
+    bits: u32,
+}
+
+#[repr(transparent)]
+pub struct SmallUnion(FloatBits);
+
+// CHECK: i32 @test_SmallUnion(i32{{( %0)?}})
+#[no_mangle]
+pub extern "sysv64" fn test_SmallUnion(_: SmallUnion) -> SmallUnion {
+    loop {}
+}