!824 add SwitchDeadBranchElimination & MergePass in graph prepare

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

ge/graph/passes/switch_dead_branch_elimination.cc

@@ -18,8 +18,6 @@
 
 #include <string>
 #include <vector>
-#include "common/ge_inner_error_codes.h"
-#include "common/types.h"
 #include "framework/common/debug/ge_log.h"
 #include "graph/common/omg_util.h"
 #include "graph/passes/pass_utils.h"

ge/graph/preprocess/graph_preprocess.cc

@@ -52,6 +52,7 @@
 #include "graph/passes/hccl_memcpy_pass.h"
 #include "graph/passes/identity_pass.h"
 #include "graph/passes/infershape_pass.h"
+#include "graph/passes/merge_pass.h"
 #include "graph/passes/net_output_pass.h"
 #include "graph/passes/no_use_reshape_remove_pass.h"
 #include "graph/passes/parallel_concat_start_op_pass.h"
@@ -67,6 +68,7 @@
 #include "graph/passes/shape_operate_op_remove_pass.h"
 #include "graph/passes/snapshot_pass.h"
 #include "graph/passes/stop_gradient_pass.h"
+#include "graph/passes/switch_dead_branch_elimination.h"
 #include "graph/passes/unused_const_pass.h"
 #include "graph/passes/var_is_initialized_op_pass.h"
 #include "graph/passes/variable_prepare_op_pass.h"
@@ -1769,6 +1771,10 @@ Status GraphPrepare::InferShapeForPreprocess() {
   if (!options_.train_graph_flag) {
     names_to_passes.emplace_back("AssertPass", &assert_pass);
   }
+  SwitchDeadBranchElimination switch_dead_branch_elimination;
+  names_to_passes.emplace_back("SwitchDeadBranchElimination", &switch_dead_branch_elimination);
+  MergePass merge_pass;
+  names_to_passes.emplace_back("MergePass", &merge_pass);
   InferShapePass infer_shape_pass;
   names_to_passes.emplace_back("InferShapePass", &infer_shape_pass);
   ReplaceWithEmptyConstPass replace_with_empty_const_pass;