1 files changed, 13 insertions, 0 deletions
diff --git a/tests/codegen/ffi-pure.rs b/tests/codegen/ffi-pure.rs
new file mode 100644
index 000000000..2ed735813
--- /dev/null
+++ b/tests/codegen/ffi-pure.rs
@@ -0,0 +1,13 @@
+// compile-flags: -C no-prepopulate-passes
+#![crate_type = "lib"]
+#![feature(ffi_pure)]
+
+pub fn bar() { unsafe { foo() } }
+
+extern "C" {
+    // CHECK-LABEL: declare{{.*}}void @foo()
+    // CHECK-SAME: [[ATTRS:#[0-9]+]]
+    // The attribute changed from `readonly` to `memory(read)` with LLVM 16.0.
+    // CHECK-DAG: attributes [[ATTRS]] = { {{.*}}{{readonly|memory\(read\)}}{{.*}} }
+    #[ffi_pure] pub fn foo();
+}