proc liftLocalsIfRequested(prc: PSym; n: PNode; cache: IdentCache;
                           conf: ConfigRef; idgen: IdGenerator): PNode {....raises: [
    ValueError, OSError, KeyError, IOError, Exception, ERecoverableError], tags: [
    RootEffect, WriteIOEffect, ReadEnvEffect, ReadIOEffect, ReadDirEffect],
    forbids: [].}