1; RUN: llc -mtriple=thumbv6-apple-darwin %s -o - | FileCheck %s -check-prefix=V6
2; RUN: llc -mtriple=thumbv7-apple-darwin -mattr=-db %s -o - | FileCheck %s -check-prefix=V6
3; RUN: llc -mtriple=thumb-eabi -mcpu=cortex-m0 %s -o - | FileCheck %s -check-prefix=V6M
4
5define void @t1() {
6; V6-LABEL: t1:
7; V6: blx {{_*}}sync_synchronize
8
9; V6M-LABEL: t1:
10; V6M: dmb sy
11  fence seq_cst
12  ret void
13}
14