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