Move outside copy to outside loop. Performance did not change so much with -O2, though
Move outside copy to outside loop. Performance did not change so much with -O2, though

keisuke-umezawa/chainer,okuta/chainer,pfnet/chainer,keisuke-umezawa/chainer,okuta/chainer,niboshi/chainer,jnishi/chainer,chainer/chainer,okuta/chainer,wkentaro/chainer,niboshi/chainer,wkentaro/chainer,chainer/chainer,tkerola/chainer,okuta/chainer,ktnyt/chainer,keisuke-umezawa/chainer,niboshi/chainer,hvy/chainer,hvy/chainer,jnishi/chainer,ktnyt/chainer,ktnyt/chainer,wkentaro/chainer,chainer/chainer,jnishi/chainer,niboshi/chainer,hvy/chainer,keisuke-umezawa/chainer,jnishi/chainer,wkentaro/chainer,chainer/chainer,ktnyt/chainer,hvy/chainer