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