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1; RUN: llc -mtriple=thumbv6-apple-darwin %s -o - | FileCheck %s -check-prefix=V62; RUN: llc -mtriple=thumbv7-apple-darwin -mattr=-db %s -o - | FileCheck %s -check-prefix=V63; RUN: llc -mtriple=thumb-eabi -mcpu=cortex-m0 %s -o - | FileCheck %s -check-prefix=V6M4 5define void @t1() {6; V6-LABEL: t1:7; V6: bl {{_*}}sync_synchronize8 9; V6M-LABEL: t1:10; V6M: dmb sy11 fence seq_cst12 ret void13}14