File: fence.ll

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llvm-toolchain-21 1%3A21.1.6-3
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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
}