From: @dimitri_rose
Reviewed-by: @ji_chen,@sheng-nan
Signed-off-by: @ji_chen

From: @zhengyuanhua
Reviewed-by: @wan_xuelei,@wqtshg,@xchu42
Signed-off-by: @ljl0711

From: @zhou_chao1993
Reviewed-by: @xchu42,@ji_chen
Signed-off-by: @ji_chen

From: @zhangxiaokun9
Reviewed-by: @xchu42,@ji_chen
Signed-off-by: @ji_chen

From: @hugo1
Reviewed-by: @xchu42,@wqtshg
Signed-off-by:

new file:   tests/ut/ge/graph/passes/replace_with_empty_const_pass_unittest.cc

From: @zhou_chao1993
Reviewed-by: @youui
Signed-off-by:

From: @zhangxiaokun9
Reviewed-by: @wqtshg,@xchu42
Signed-off-by: @ji_chen

From: @wan_xuelei
Reviewed-by: @tangqunzhang,@wqtshg
Signed-off-by:

From: @HW_KK
Reviewed-by: 
Signed-off-by:

From: @li-lei0106
Reviewed-by: @ni100die,@xchu42,@j00107162
Signed-off-by:

From: @zhao_zhixuan
Reviewed-by: @xchu42,@ji_chen
Signed-off-by: @ji_chen

From: @zhangxiaokun9
Reviewed-by: @wangxiaotian22,@ji_chen
Signed-off-by: @ji_chen

From: @wangxiaotian22
Reviewed-by: @xchu42,@sheng-nan
Signed-off-by: @ji_chen

modified:   ge/graph/preprocess/graph_preprocess.cc
	modified:   tests/ut/ge/CMakeLists.txt
	modified:   tests/ut/ge/graph/load/new_model_manager_model_manager_unittest.cc
	new file:   tests/ut/ge/graph/preprocess/graph_preprocess_unittest.cc