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

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

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

From: @ni100die
Reviewed-by: @tangqunzhang,@xchu42,@ji_chen
Signed-off-by:

From: @yangyongqiang5033
Reviewed-by: @xchu42,@ji_chen
Signed-off-by: @ji_chen

From: @zhengyuanhua
Reviewed-by: @liujunzhu,@youui
Signed-off-by: @youui

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

From: @lichun30
Reviewed-by: @xchu42,@wqtshg
Signed-off-by: @wqtshg

From: @lichun30
Reviewed-by: 
Signed-off-by:

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

subgraph_const_migration_pass.cc

From: @wangxiaotian22
Reviewed-by: 
Signed-off-by: