AArch64: add test for "fence singlethread"

Forgot a git add yesterday.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301037 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/AArch64/fence-singlethread.ll b/test/CodeGen/AArch64/fence-singlethread.ll
new file mode 100644 (file)
index 0000000..2ed7442
--- /dev/null
+++ b/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
+}