Paddle

Author	SHA1	Message	Date
Zhang Ting	01a9646323	optimize assign op to avoid copy data from GPU to GPU (#21181 ) * optimize assign op to avoid copy data from GPU to GPU, test=develop * modified GetkernelTypeForVar and just avoid device transform, test=develop	5 years ago
Huihuang Zheng	1957192f05	Add select_input_op and select_output_op (#21016 ) These ops are useful in control flow.	5 years ago