From ad89666ae2965b2d2d9a371333b7bc2a573b14e3 Mon Sep 17 00:00:00 2001
From: mamingjie-China <mamingjie@baidu.com>
Date: Fri, 11 Oct 2019 15:28:18 +0800
Subject: [PATCH] modify

---
 x2paddle/optimizer/tf_optimizer.py | 63 ++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/x2paddle/optimizer/tf_optimizer.py b/x2paddle/optimizer/tf_optimizer.py
index 848409c..08f7b08 100644
--- a/x2paddle/optimizer/tf_optimizer.py
+++ b/x2paddle/optimizer/tf_optimizer.py
@@ -482,6 +482,69 @@ class TFOptimizer(object):
                                             0].inputs
                                     del out_node.fluid_code.layers[0]
 
+        graph_copy = cp.deepcopy(self.graph)
+        for node_name in self.graph.topo_sort:
+            node = graph_copy.get_node(node_name)
+            if node is None:
+                continue
+            if node.layer_type in elementwise_ops:
+                can_be_removed = True
+                if len(node.fluid_code.layers) < 3:
+                    continue
+
+                numTranspose = 0
+                numNotTranspose = 0
+
+                for i in range(len(node.fluid_code.layers)):
+                    if node.fluid_code.layers[i].op == 'transpose':
+                        numTranspose += 1
+                    elif node.fluid_code.layers[i].op != 'expand':
+                        numNotTranspose += 1
+                if numTranspose > numNotTranspose:
+                    if node.fluid_code.layers[0].op == 'expand':
+                        if node.fluid_code.layers[
+                                1].op != 'transpose' or node.fluid_code.layers[
+                                    2].op != 'transpose':
+                            continue
+                        else:
+                            true_node = self.graph.get_node(node_name)
+                            true_node.fluid_code.layers[3].inputs[
+                                'x'] = true_node.fluid_code.layers[1].inputs
+                            true_node.fluid_code.layers[3].inputs[
+                                'y'] = true_node.fluid_code.layers[2].inputs
+
+                            l = Layer()
+                            l.op = 'transpose'
+                            l.inputs = true_node.fluid_code.layers[3].output
+                            l.param_attr = {'perm': [0, 3, 1, 2]}
+                            if type(l.inputs) == str:
+                                l.output = l.inputs
+                            else:
+                                l.output = l.inputs.layer_name
+                            true_node.fluid_code.layers.append(l)
+                            del true_node.fluid_code.layers[1]
+                            del true_node.fluid_code.layers[1]
+                    else:
+                        if node.fluid_code.layers[
+                                0].op != 'transpose' or node.fluid_code.layers[
+                                    1].op != 'transpose':
+                            continue
+                        else:
+                            true_node = self.graph.get_node(node_name)
+                            true_node.fluid_code.layers[2].inputs[
+                                'x'] = true_node.fluid_code.layers[0].inputs
+                            true_node.fluid_code.layers[2].inputs[
+                                'y'] = true_node.fluid_code.layers[1].inputs
+
+                            l = Layer()
+                            l.op = 'transpose'
+                            l.inputs = true_node.fluid_code.layers[2].output
+                            l.param_attr = {'perm': [0, 3, 1, 2]}
+                            l.output = l.inputs.layer_name
+                            true_node.fluid_code.layers.append(l)
+                            del true_node.fluid_code.layers[0]
+                            del true_node.fluid_code.layers[0]
+
     def make_nchw_input_output(self):
         for i, name in enumerate(self.graph.input_nodes):
             node = self.graph.get_node(name)
-- 
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