1 files changed, 27 insertions, 4 deletions
diff --git a/unittests/Driver/MultilibTest.cpp b/unittests/Driver/MultilibTest.cpp
index c5e8e0970d..0731c81d9f 100644
--- a/unittests/Driver/MultilibTest.cpp
+++ b/unittests/Driver/MultilibTest.cpp
@@ -1,9 +1,8 @@
 //===- unittests/Driver/MultilibTest.cpp --- Multilib tests ---------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
@@ -350,3 +349,27 @@ TEST(MultilibTest, SetCombineWith) {
   Latte.combineWith(Milk);
   ASSERT_EQ(Latte.size(), (unsigned)2);
 }
+
+TEST(MultilibTest, SetPriority) {
+  MultilibSet MS;
+  MS.push_back(Multilib("foo", {}, {}, 1).flag("+foo"));
+  MS.push_back(Multilib("bar", {}, {}, 2).flag("+bar"));
+
+  Multilib::flags_list Flags1;
+  Flags1.push_back("+foo");
+  Flags1.push_back("-bar");
+  Multilib Selection1;
+  ASSERT_TRUE(MS.select(Flags1, Selection1))
+      << "Flag set was {\"+foo\"}, but selection not found";
+  ASSERT_TRUE(Selection1.gccSuffix() == "/foo")
+      << "Selection picked " << Selection1 << " which was not expected";
+
+  Multilib::flags_list Flags2;
+  Flags2.push_back("+foo");
+  Flags2.push_back("+bar");
+  Multilib Selection2;
+  ASSERT_TRUE(MS.select(Flags2, Selection2))
+      << "Flag set was {\"+bar\"}, but selection not found";
+  ASSERT_TRUE(Selection2.gccSuffix() == "/bar")
+      << "Selection picked " << Selection2 << " which was not expected";
+}