1 /* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
2 
3 Licensed under the Apache License, Version 2.0 (the "License");
4 you may not use this file except in compliance with the License.
5 You may obtain a copy of the License at
6 
7     http://www.apache.org/licenses/LICENSE-2.0
8 
9 Unless required by applicable law or agreed to in writing, software
10 distributed under the License is distributed on an "AS IS" BASIS,
11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 See the License for the specific language governing permissions and
13 limitations under the License.
14 ==============================================================================*/
15 
16 #ifndef TENSORFLOW_LITE_DELEGATES_GPU_GL_COMPILER_FUSE_INLINE_H_
17 #define TENSORFLOW_LITE_DELEGATES_GPU_GL_COMPILER_FUSE_INLINE_H_
18 
19 #include <vector>
20 
21 #include "tensorflow/lite/delegates/gpu/common/model.h"
22 #include "tensorflow/lite/delegates/gpu/common/model_transformer.h"
23 
24 namespace tflite {
25 namespace gpu {
26 namespace gl {
27 
28 // Fuses every two nodes where first node does default output and second node
29 // is INLINE.
30 //
31 // Generates code as follows:
32 //   1. all uniforms are inlined
33 //   2. source code is wrapped into {}
34 // For example:
35 //  value = clamp(value, 0.0, clip);
36 //  +
37 //  value = 1.0 / (1.0 + exp(-1.0 * value));
38 // will turn into:
39 //  {
40 //    value = clamp(value, 0.0, clip);
41 //  }
42 //  {
43 //    value = 1.0 / (1.0 + exp(-1.0 * value));
44 //  }
45 class FuseAutoOutputWithInline : public SequenceTransformation {
46  public:
ExpectedSequenceLength()47   int ExpectedSequenceLength() const final { return 2; }
48 
49   TransformResult ApplyToNodesSequence(const std::vector<Node*>& sequence,
50                                        GraphFloat32* graph) final;
51 };
52 
53 }  // namespace gl
54 }  // namespace gpu
55 }  // namespace tflite
56 
57 #endif  // TENSORFLOW_LITE_DELEGATES_GPU_GL_COMPILER_FUSE_INLINE_H_
58