1 files changed, 66 insertions, 0 deletions
diff --git a/src/test/codegen/consts.rs b/src/test/codegen/consts.rs
new file mode 100644
index 00000000000..6b4e626df92
--- /dev/null
+++ b/src/test/codegen/consts.rs
@@ -0,0 +1,66 @@
+// 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
+
+#![crate_type = "lib"]
+
+// Below, these constants are defined as enum variants that by itself would
+// have a lower alignment than the enum type. Ensure that we mark them
+// correctly with the higher alignment of the enum.
+
+// CHECK: @STATIC = {{.*}}, align 4
+
+// This checks the constants from inline_enum_const
+// CHECK: @const{{[0-9]+}} = {{.*}}, align 2
+
+// This checks the constants from {low,high}_align_const, they share the same
+// constant, but the alignment differs, so the higher one should be used
+// CHECK: @const{{[0-9]+}} = {{.*}}, align 4
+
+#[derive(Copy, Clone)]
+
+// repr(i16) is required for the {low,high}_align_const test
+#[repr(i16)]
+pub enum E<A, B> {
+    A(A),
+    B(B),
+}
+
+#[no_mangle]
+pub static STATIC: E<i16, i32> = E::A(0);
+
+// CHECK-LABEL: @static_enum_const
+#[no_mangle]
+pub fn static_enum_const() -> E<i16, i32> {
+   STATIC
+}
+
+// CHECK-LABEL: @inline_enum_const
+#[no_mangle]
+pub fn inline_enum_const() -> E<i8, i16> {
+    E::A(0)
+}
+
+// CHECK-LABEL: @low_align_const
+#[no_mangle]
+pub fn low_align_const() -> E<i16, [i16; 3]> {
+// Check that low_align_const and high_align_const use the same constant
+// CHECK: call void @llvm.memcpy.{{.*}}(i8* %{{[0-9]+}}, i8* {{.*}} [[LOW_HIGH:@const[0-9]+]]
+    E::A(0)
+}
+
+// CHECK-LABEL: @high_align_const
+#[no_mangle]
+pub fn high_align_const() -> E<i16, i32> {
+// Check that low_align_const and high_align_const use the same constant
+// CHECK: call void @llvm.memcpy.{{.*}}(i8* %{{[0-9]}}, i8* {{.*}} [[LOW_HIGH]]
+    E::A(0)
+}