1 files changed, 95 insertions, 0 deletions
diff --git a/src/test/codegen/function-arguments.rs b/src/test/codegen/function-arguments.rs
new file mode 100644
index 00000000000..f11e769ca6c
--- /dev/null
+++ b/src/test/codegen/function-arguments.rs
@@ -0,0 +1,95 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// compile-flags: -C no-prepopulate-passes
+
+#![feature(allocator)]
+
+pub struct S {
+  _field: [i64; 4],
+}
+
+pub struct UnsafeInner {
+  _field: std::cell::UnsafeCell<i16>,
+}
+
+// CHECK: zeroext i1 @boolean(i1 zeroext)
+#[no_mangle]
+pub fn boolean(x: bool) -> bool {
+  x
+}
+
+// CHECK: @readonly_borrow(i32* noalias readonly dereferenceable(4))
+// FIXME #25759 This should also have `nocapture`
+#[no_mangle]
+pub fn readonly_borrow(_: &i32) {
+}
+
+// CHECK: @static_borrow(i32* noalias readonly dereferenceable(4))
+// static borrow may be captured
+#[no_mangle]
+pub fn static_borrow(_: &'static i32) {
+}
+
+// CHECK: @named_borrow(i32* noalias readonly dereferenceable(4))
+// borrow with named lifetime may be captured
+#[no_mangle]
+pub fn named_borrow<'r>(_: &'r i32) {
+}
+
+// CHECK: @unsafe_borrow(%UnsafeInner* dereferenceable(2))
+// unsafe interior means this isn't actually readonly and there may be aliases ...
+#[no_mangle]
+pub fn unsafe_borrow(_: &UnsafeInner) {
+}
+
+// CHECK: @mutable_unsafe_borrow(%UnsafeInner* noalias dereferenceable(2))
+// ... unless this is a mutable borrow, those never alias
+#[no_mangle]
+pub fn mutable_unsafe_borrow(_: &mut UnsafeInner) {
+}
+
+// CHECK: @mutable_borrow(i32* noalias dereferenceable(4))
+// FIXME #25759 This should also have `nocapture`
+#[no_mangle]
+pub fn mutable_borrow(_: &mut i32) {
+}
+
+// CHECK: @indirect_struct(%S* noalias nocapture dereferenceable(32))
+#[no_mangle]
+pub fn indirect_struct(_: S) {
+}
+
+// CHECK: @borrowed_struct(%S* noalias readonly dereferenceable(32))
+// FIXME #25759 This should also have `nocapture`
+#[no_mangle]
+pub fn borrowed_struct(_: &S) {
+}
+
+// CHECK: noalias dereferenceable(4) i32* @_box(i32* noalias dereferenceable(4))
+#[no_mangle]
+pub fn _box(x: Box<i32>) -> Box<i32> {
+  x
+}
+
+// CHECK: @struct_return(%S* noalias nocapture sret dereferenceable(32))
+#[no_mangle]
+pub fn struct_return() -> S {
+  S {
+    _field: [0, 0, 0, 0]
+  }
+}
+
+// CHECK: noalias i8* @allocator()
+#[no_mangle]
+#[allocator]
+pub fn allocator() -> *const i8 {
+  std::ptr::null()
+}