; RUN: llc -march=x86-64 < %s | FileCheck %s
@sc8 = external global i8

define void @atomic_maxmin_i8() {
; CHECK: atomic_maxmin_i8
  %1 = atomicrmw max  i8* @sc8, i8 5 acquire
; CHECK: [[LABEL1:\.?LBB[0-9]+_[0-9]+]]:
; CHECK: movsbl
; CHECK: cmpl
; CHECK: lock
; CHECK-NEXT: cmpxchgb
; CHECK: jne [[LABEL1]]
  %2 = atomicrmw min  i8* @sc8, i8 6 acquire
; CHECK: [[LABEL3:\.?LBB[0-9]+_[0-9]+]]:
; CHECK: movsbl
; CHECK: cmpl
; CHECK: lock
; CHECK-NEXT: cmpxchgb
; CHECK: jne [[LABEL3]]
  %3 = atomicrmw umax i8* @sc8, i8 7 acquire
; CHECK: [[LABEL5:\.?LBB[0-9]+_[0-9]+]]:
; CHECK: movzbl
; CHECK: cmpl
; CHECK: lock
; CHECK-NEXT: cmpxchgb
; CHECK: jne [[LABEL5]]
  %4 = atomicrmw umin i8* @sc8, i8 8 acquire
; CHECK: [[LABEL7:\.?LBB[0-9]+_[0-9]+]]:
; CHECK: movzbl
; CHECK: cmpl
; CHECK: lock
; CHECK-NEXT: cmpxchgb
; CHECK: jne [[LABEL7]]
  ret void
}
