Minqin Chen

QAT of GRU have not supported yet。nnieqat quantize layers' [weight attribute](https://github.com/aovoc/nnieqat-pytorch/blob/91410cf331a120d9a1df1b435a14d30f10743541/nnieqat/quantize.py#L349) ，[pytorch GRU attributes](https://github.com/pytorch/pytorch/blob/a299a2fa262ba26a2aa3519d2b6d27a33e82f580/torch/nn/modules/rnn.py#L864 ) does not have attribute exactly named "weight".

我走的是pytorch->caffe 的流程，没碰到这个问题哈，具体解决需要看一下这个cast 层怎么产生，功能是什么