Optimizer concatenate for c_contiguous arrays
Optimizer concatenate for c_contiguous arrays

keisuke-umezawa/chainer,cupy/cupy,anaruse/chainer,hvy/chainer,tkerola/chainer,ysekky/chainer,wkentaro/chainer,wkentaro/chainer,niboshi/chainer,okuta/chainer,keisuke-umezawa/chainer,jnishi/chainer,jnishi/chainer,chainer/chainer,niboshi/chainer,jnishi/chainer,ktnyt/chainer,chainer/chainer,kiyukuta/chainer,ktnyt/chainer,wkentaro/chainer,okuta/chainer,kashif/chainer,okuta/chainer,niboshi/chainer,keisuke-umezawa/chainer,ronekko/chainer,ktnyt/chainer,chainer/chainer,hvy/chainer,cupy/cupy,delta2323/chainer,cupy/cupy,jnishi/chainer,cupy/cupy,chainer/chainer,rezoo/chainer,wkentaro/chainer,okuta/chainer,aonotas/chainer,keisuke-umezawa/chainer,hvy/chainer,ktnyt/chainer,niboshi/chainer,hvy/chainer,pfnet/chainer