compiler/optimizing/code_generator_arm64.cc [3153:3182]:
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void LocationsBuilderARM64::VisitInstanceOf(HInstanceOf* instruction) {
  LocationSummary::CallKind call_kind = LocationSummary::kNoCall;
  TypeCheckKind type_check_kind = instruction->GetTypeCheckKind();
  switch (type_check_kind) {
    case TypeCheckKind::kExactCheck:
    case TypeCheckKind::kAbstractClassCheck:
    case TypeCheckKind::kClassHierarchyCheck:
    case TypeCheckKind::kArrayObjectCheck:
      call_kind =
          kEmitCompilerReadBarrier ? LocationSummary::kCallOnSlowPath : LocationSummary::kNoCall;
      break;
    case TypeCheckKind::kArrayCheck:
    case TypeCheckKind::kUnresolvedCheck:
    case TypeCheckKind::kInterfaceCheck:
      call_kind = LocationSummary::kCallOnSlowPath;
      break;
  }

  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction, call_kind);
  locations->SetInAt(0, Location::RequiresRegister());
  locations->SetInAt(1, Location::RequiresRegister());
  // The "out" register is used as a temporary, so it overlaps with the inputs.
  // Note that TypeCheckSlowPathARM64 uses this register too.
  locations->SetOut(Location::RequiresRegister(), Location::kOutputOverlap);
  // When read barriers are enabled, we need a temporary register for
  // some cases.
  if (TypeCheckNeedsATemporary(type_check_kind)) {
    locations->AddTemp(Location::RequiresRegister());
  }
}
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compiler/optimizing/code_generator_arm.cc [5414:5443]:
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void LocationsBuilderARM::VisitInstanceOf(HInstanceOf* instruction) {
  LocationSummary::CallKind call_kind = LocationSummary::kNoCall;
  TypeCheckKind type_check_kind = instruction->GetTypeCheckKind();
  switch (type_check_kind) {
    case TypeCheckKind::kExactCheck:
    case TypeCheckKind::kAbstractClassCheck:
    case TypeCheckKind::kClassHierarchyCheck:
    case TypeCheckKind::kArrayObjectCheck:
      call_kind =
          kEmitCompilerReadBarrier ? LocationSummary::kCallOnSlowPath : LocationSummary::kNoCall;
      break;
    case TypeCheckKind::kArrayCheck:
    case TypeCheckKind::kUnresolvedCheck:
    case TypeCheckKind::kInterfaceCheck:
      call_kind = LocationSummary::kCallOnSlowPath;
      break;
  }

  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction, call_kind);
  locations->SetInAt(0, Location::RequiresRegister());
  locations->SetInAt(1, Location::RequiresRegister());
  // The "out" register is used as a temporary, so it overlaps with the inputs.
  // Note that TypeCheckSlowPathARM uses this register too.
  locations->SetOut(Location::RequiresRegister(), Location::kOutputOverlap);
  // When read barriers are enabled, we need a temporary register for
  // some cases.
  if (TypeCheckNeedsATemporary(type_check_kind)) {
    locations->AddTemp(Location::RequiresRegister());
  }
}
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