From 1efaa3a88fbcca9db80ad7a46d2f6066bffc19de Mon Sep 17 00:00:00 2001
From: Tim Northover <tnorthover@apple.com>
Date: Fri, 21 Apr 2017 20:36:08 +0000
Subject: [PATCH] AArch64: add test for "fence singlethread"

Forgot a git add yesterday.

llvm-svn: 301037
---
 .../CodeGen/AArch64/fence-singlethread.ll     | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 llvm/test/CodeGen/AArch64/fence-singlethread.ll

diff --git a/llvm/test/CodeGen/AArch64/fence-singlethread.ll b/llvm/test/CodeGen/AArch64/fence-singlethread.ll
new file mode 100644
index 000000000000..2ed744277385
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/fence-singlethread.ll
@@ -0,0 +1,21 @@
+; RUN: llc -mtriple=aarch64-linux-gnu %s -o - | FileCheck %s --check-prefix=LINUX
+; RUN: llc -mtriple=aarch64-apple-ios %s -o - | FileCheck %s --check-prefix=IOS
+; RUN: llc -mtriple=aarch64-linux-gnueabihf %s -filetype=obj -o %t
+; RUN: llvm-objdump -d %t | FileCheck %s --check-prefix=OBJ
+
+; OBJ-NOT: dmb
+
+define void @fence_singlethread() {
+; LINUX-LABEL: fence_singlethread:
+; LINUX-NOT: dmb
+; LINUX: // COMPILER BARRIER
+; LINUX-NOT: dmb
+
+; IOS-LABEL: fence_singlethread:
+; IOS-NOT: dmb
+; IOS: ; COMPILER BARRIER
+; IOS-NOT: dmb
+
+  fence singlethread seq_cst
+  ret void
+}