From fd7fd0c4a47e276cd4770e16f722fbaa56c7bc32 Mon Sep 17 00:00:00 2001
From: zhhsplendid <zhhsplendid@163.com>
Date: Sun, 27 Sep 2020 12:40:44 +0000
Subject: [PATCH] [Dy2stat] Fix lstm bug, test=develop

---
 .../dygraph_to_static/convert_call_func.py    | 15 ++++-
 python/paddle/fluid/layers/rnn.py             |  2 +-
 .../unittests/dygraph_to_static/test_lstm.py  | 56 +++++++++++++++++++
 3 files changed, 71 insertions(+), 2 deletions(-)
 create mode 100644 python/paddle/fluid/tests/unittests/dygraph_to_static/test_lstm.py

diff --git a/python/paddle/fluid/dygraph/dygraph_to_static/convert_call_func.py b/python/paddle/fluid/dygraph/dygraph_to_static/convert_call_func.py
index 908587c0d9..f948502d96 100644
--- a/python/paddle/fluid/dygraph/dygraph_to_static/convert_call_func.py
+++ b/python/paddle/fluid/dygraph/dygraph_to_static/convert_call_func.py
@@ -65,7 +65,20 @@ def is_unsupported(func):
     Checks whether the func is supported by dygraph to static graph.
     """
 
-    if any(func in m.__dict__.values() for m in BUILTIN_LIKELY_MODULES):
+    func_in_builtin_modules = False
+    for m in BUILTIN_LIKELY_MODULES:
+        for v in m.__dict__.values():
+            func_in_dict = func == v
+            if isinstance(func_in_dict, list) or isinstance(func_in_dict,
+                                                            numpy.ndarray):
+                func_in_dict = any(func_in_dict)
+            if func_in_dict:
+                func_in_builtin_modules = True
+                break
+        if func_in_builtin_modules:
+            break
+
+    if func_in_builtin_modules:
         translator_logger.log(
             2,
             "Whitelist: {} is part of built-in module and does not have to be transformed.".
diff --git a/python/paddle/fluid/layers/rnn.py b/python/paddle/fluid/layers/rnn.py
index fe8ed83923..ed5fa02f9a 100644
--- a/python/paddle/fluid/layers/rnn.py
+++ b/python/paddle/fluid/layers/rnn.py
@@ -619,7 +619,7 @@ def _rnn_static_graph(cell,
         inputs = map_structure(rnn.step_input, inputs)
         states = map_structure(rnn.memory, initial_states)
         copy_states = map_structure(lambda x: x, states)
-        outputs, new_states = cell.call(inputs, copy_states, **kwargs)
+        outputs, new_states = cell(inputs, copy_states, **kwargs)
         assert_same_structure(states, new_states)
         if sequence_length:
             step_mask = rnn.step_input(mask)
diff --git a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_lstm.py b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_lstm.py
new file mode 100644
index 0000000000..e83128f045
--- /dev/null
+++ b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_lstm.py
@@ -0,0 +1,56 @@
+# copyright (c) 2020 PaddlePaddle Authors. All Rights Reserve.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import numpy as np
+import paddle
+import unittest
+from paddle import nn
+
+
+class Net(nn.Layer):
+    def __init__(self, in_channels, hidden_size):
+        super(Net, self).__init__()
+        self.lstm = nn.LSTM(
+            in_channels, hidden_size, direction='bidirectional', num_layers=2)
+
+    @paddle.jit.to_static
+    def forward(self, x):
+        x, _ = self.lstm(x)
+        return x
+
+
+class TestLstm(unittest.TestCase):
+    def run_lstm(self, to_static):
+        paddle.jit.ProgramTranslator().enable(to_static)
+
+        paddle.disable_static()
+        paddle.static.default_main_program().random_seed = 1001
+        paddle.static.default_startup_program().random_seed = 1001
+
+        net = Net(12, 2)
+        x = paddle.zeros((2, 10, 12))
+        y = net(paddle.to_tensor(x))
+        return y.numpy()
+
+    def test_lstm_to_static(self):
+        dygraph_out = self.run_lstm(to_static=False)
+        static_out = self.run_lstm(to_static=True)
+        self.assertTrue(
+            np.allclose(dygraph_out, static_out),
+            msg='dygraph_out is {}\n static_out is \n{}'.format(dygraph_out,
+                                                                static_out))
+
+
+if __name__ == "__main__":
+    unittest.main()
-- 
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