From 39fcc9a984e2820e4ea0fa2ac4abd17d9f3a31df Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Sun, 20 Feb 2011 13:06:31 +0000
Subject: Vendor import of clang trunk r126079:
 http://llvm.org/svn/llvm-project/cfe/trunk@126079

---
 test/CodeGen/may-alias.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 test/CodeGen/may-alias.c

(limited to 'test/CodeGen/may-alias.c')

diff --git a/test/CodeGen/may-alias.c b/test/CodeGen/may-alias.c
new file mode 100644
index 0000000..f3ea792
--- /dev/null
+++ b/test/CodeGen/may-alias.c
@@ -0,0 +1,21 @@
+// RUN: %clang_cc1 -Werror -triple i386-unknown-unknown -emit-llvm -O1 -disable-llvm-optzns -o %t %s
+// RUN: FileCheck < %t %s
+
+// Types with the may_alias attribute should be considered equivalent
+// to char for aliasing.
+
+typedef int __attribute__((may_alias)) aliasing_int;
+
+void test0(aliasing_int *ai, int *i)
+{
+  *ai = 0;
+  *i = 1;
+}
+
+// CHECK: store i32 0, i32* %{{.*}}, !tbaa !1
+// CHECK: store i32 1, i32* %{{.*}}, !tbaa !3
+
+// CHECK: !0 = metadata !{metadata !"any pointer", metadata !1}
+// CHECK: !1 = metadata !{metadata !"omnipotent char", metadata !2}
+// CHECK: !2 = metadata !{metadata !"Simple C/C++ TBAA", null}
+// CHECK: !3 = metadata !{metadata !"int", metadata !1}
-- 
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