target.addDynamicallyLegalOp<TF::YieldOp>(is_legal);
  target.addDynamicallyLegalOp<TF::TensorListSetItemOp>(is_set_item_legal);
  target.addLegalOp<TFL::CustomOp>();
  // Register fused LSTM/RNN ops as legal.
  target.addLegalOp<TFL::LSTMOp>();
  target.addLegalOp<TFL::UnidirectionalSequenceLSTMOp>();
  target.addLegalOp<TFL::UnidirectionalSequenceRNNOp>();

func symIsRO(sym interface{}) bool {
	lsym := sym.(*obj.LSym)
	return lsym.Type == objabi.SRODATA && len(lsym.R) == 0
}

// symIsROZero reports whether sym is a read-only global whose data contains all zeros.
func symIsROZero(sym Sym) bool {
	lsym := sym.(*obj.LSym)
	if lsym.Type != objabi.SRODATA || len(lsym.R) != 0 {
		return false
	}
	for _, b := range lsym.P {
		if b != 0 {
			return false
		}

	state.lists[varID] = list
}

// PutLocationList adds list (a location list in its intermediate representation) to listSym.
func (debugInfo *FuncDebug) PutLocationList(list []byte, ctxt *obj.Link, listSym, startPC *obj.LSym) {
	getPC := debugInfo.GetPC

	if ctxt.UseBASEntries {
		listSym.WriteInt(ctxt, listSym.Size, ctxt.Arch.PtrSize, ^0)
		listSym.WriteAddr(ctxt, listSym.Size, ctxt.Arch.PtrSize, startPC, 0)
	}