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