From 20618d0e42a99490b84656fdaf5bb79462f62f8d Mon Sep 17 00:00:00 2001
From: Simonas Kazlauskas <git@kazlauskas.me>
Date: Tue, 12 Jan 2016 16:36:47 +0200
Subject: [MIR] Avoid some code generation for stores of ZST

Fixes #30831
---
 src/test/codegen/mir_zst_stores.rs | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 src/test/codegen/mir_zst_stores.rs

(limited to 'src/test/codegen')

diff --git a/src/test/codegen/mir_zst_stores.rs b/src/test/codegen/mir_zst_stores.rs
new file mode 100644
index 00000000000..c1acdaf7031
--- /dev/null
+++ b/src/test/codegen/mir_zst_stores.rs
@@ -0,0 +1,27 @@
+// Copyright 2016 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(rustc_attrs)]
+#![crate_type = "lib"]
+use std::marker::PhantomData;
+
+
+struct Zst { phantom: PhantomData<Zst> }
+
+// CHECK-LABEL: @mir
+#[no_mangle]
+#[rustc_mir]
+fn mir(){
+    // CHECK-NOT: getelementptr
+    // CHECK-NOT: store{{.*}}undef
+    let x = Zst { phantom: PhantomData };
+}
-- 
cgit 1.4.1-3-g733a5