xref: /aosp_15_r20/external/llvm/test/CodeGen/ARM/noopt-dmb-v7.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; Ensure that adjacent duplicated barriers are not removed at -O0.
2*9880d681SAndroid Build Coastguard Worker; RUN: llc -O0 < %s -mtriple=armv7 -mattr=+db | FileCheck %s
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Workerdefine i32 @t1() {
5*9880d681SAndroid Build Coastguard Workerentry:
6*9880d681SAndroid Build Coastguard Worker  fence seq_cst
7*9880d681SAndroid Build Coastguard Worker  fence seq_cst
8*9880d681SAndroid Build Coastguard Worker  fence seq_cst
9*9880d681SAndroid Build Coastguard Worker  ret i32 0
10*9880d681SAndroid Build Coastguard Worker}
11*9880d681SAndroid Build Coastguard Worker
12*9880d681SAndroid Build Coastguard Worker; CHECK: @ BB#0: @ %entry
13*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: dmb ish
14*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: dmb ish
15*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: dmb ish
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