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; RUN: llc -mattr=avr6 < %s -march=avr | FileCheck %s
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; Checks that atomic fences are simply removed from IR.
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; AVR is always singlethreaded so fences do nothing.
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; CHECK_LABEL: atomic_fence8
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; CHECK: ; %bb.0:
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; CHECK-NEXT: ret
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define void @atomic_fence8() {
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fence acquire
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ret void
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}
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