luaK_codek
luaK_codek(fs, reg, e->u.info);
luaK_codek(fs, reg, luaK_numberK(fs, e->u.nval));
LUAI_FUNC int luaK_codek (FuncState *fs, int reg, int k);
luaK_codek(fs, fs->freereg, luaK_numberK(fs, 1));