switch-op design (#8031)
switch-op design (#8031)

add switch op design
lcy-seso/Paddle,luotao1/Paddle,PaddlePaddle/Paddle,tensor-tang/Paddle,luotao1/Paddle,QiJune/Paddle,putcn/Paddle,baidu/Paddle,lcy-seso/Paddle,chengduoZH/Paddle,PaddlePaddle/Paddle,jacquesqiao/Paddle,tensor-tang/Paddle,lcy-seso/Paddle,pkuyym/Paddle,Canpio/Paddle,luotao1/Paddle,jacquesqiao/Paddle,luotao1/Paddle,PaddlePaddle/Paddle,putcn/Paddle,Canpio/Paddle,jacquesqiao/Paddle,luotao1/Paddle,jacquesqiao/Paddle,pkuyym/Paddle,putcn/Paddle,reyoung/Paddle,baidu/Paddle,chengduoZH/Paddle,QiJune/Paddle,Canpio/Paddle,tensor-tang/Paddle,pkuyym/Paddle,jacquesqiao/Paddle,pkuyym/Paddle,QiJune/Paddle,baidu/Paddle,QiJune/Paddle,reyoung/Paddle,chengduoZH/Paddle,Canpio/Paddle,lcy-seso/Paddle,QiJune/Paddle,jacquesqiao/Paddle,PaddlePaddle/Paddle,tensor-tang/Paddle,QiJune/Paddle,baidu/Paddle,luotao1/Paddle,putcn/Paddle,PaddlePaddle/Paddle,lcy-seso/Paddle,putcn/Paddle,lcy-seso/Paddle,luotao1/Paddle,Canpio/Paddle,reyoung/Paddle,putcn/Paddle,chengduoZH/Paddle,pkuyym/Paddle,baidu/Paddle,reyoung/Paddle,pkuyym/Paddle,PaddlePaddle/Paddle,Canpio/Paddle,reyoung/Paddle,PaddlePaddle/Paddle,tensor-tang/Paddle,chengduoZH/Paddle,Canpio/Paddle,reyoung/Paddle,Canpio/Paddle