From 84990fb7fde4d53844c7416b8679c22c281432c4 Mon Sep 17 00:00:00 2001
From: =?utf8?q?=D0=A1=D0=B5=D1=80=D0=B3=D0=B5=D0=B9=20=D0=91=D0=B0=D1=80?=
 =?utf8?q?=D0=B0=D0=BD=D0=BD=D0=B8=D0=BA=D0=BE=D0=B2/AI=20Tools=20Lab=20/S?=
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 <s.barannikov@samsung.com>
Date: Wed, 18 Sep 2019 16:36:50 +0300
Subject: [PATCH] [mir_onnx] Support Reciprocal operator (#7598)

Add support for `Reciprocal` operator.

Signed-off-by: Sergei Barannikov <s.barannikov@samsung.com>
---
 compiler/mir-onnx-importer/CMakeLists.txt       |  2 ++
 compiler/mir-onnx-importer/ONNXOpRegistration.h |  2 ++
 compiler/mir-onnx-importer/Op/Reciprocal.cpp    | 44 +++++++++++++++++++++++++
 compiler/mir-onnx-importer/Op/Reciprocal.h      | 33 +++++++++++++++++++
 4 files changed, 81 insertions(+)
 create mode 100644 compiler/mir-onnx-importer/Op/Reciprocal.cpp
 create mode 100644 compiler/mir-onnx-importer/Op/Reciprocal.h

diff --git a/compiler/mir-onnx-importer/CMakeLists.txt b/compiler/mir-onnx-importer/CMakeLists.txt
index cb9b7fd..e4a299e 100644
--- a/compiler/mir-onnx-importer/CMakeLists.txt
+++ b/compiler/mir-onnx-importer/CMakeLists.txt
@@ -63,6 +63,8 @@ set(MIR_ONNX_IMPORTER_SOURCES
         Op/Mul.h
         Op/Pad.cpp
         Op/Pad.h
+        Op/Reciprocal.cpp
+        Op/Reciprocal.h
         Op/ReduceMean.cpp
         Op/ReduceMean.h
         Op/Relu.cpp
diff --git a/compiler/mir-onnx-importer/ONNXOpRegistration.h b/compiler/mir-onnx-importer/ONNXOpRegistration.h
index 19922b5..e05c874 100644
--- a/compiler/mir-onnx-importer/ONNXOpRegistration.h
+++ b/compiler/mir-onnx-importer/ONNXOpRegistration.h
@@ -36,6 +36,7 @@
 #include "Op/MaxPool.h"
 #include "Op/Mul.h"
 #include "Op/Pad.h"
+#include "Op/Reciprocal.h"
 #include "Op/ReduceMean.h"
 #include "Op/Relu.h"
 #include "Op/Reshape.h"
@@ -73,6 +74,7 @@ inline void registerSupportedOps()
   registry.registerConverter("MaxPool", stdex::make_unique<MaxPoolNodeConverter>());
   registry.registerConverter("Mul", stdex::make_unique<MulNodeConverter>());
   registry.registerConverter("Pad", stdex::make_unique<PadNodeConverter>());
+  registry.registerConverter("Reciprocal", stdex::make_unique<ReciprocalNodeConverter>());
   registry.registerConverter("ReduceMean", stdex::make_unique<ReduceMeanNodeConverter>());
   registry.registerConverter("Relu", stdex::make_unique<ReluNodeConverter>());
   registry.registerConverter("Reshape", stdex::make_unique<ReshapeNodeConverter>());
diff --git a/compiler/mir-onnx-importer/Op/Reciprocal.cpp b/compiler/mir-onnx-importer/Op/Reciprocal.cpp
new file mode 100644
index 0000000..5af3156
--- /dev/null
+++ b/compiler/mir-onnx-importer/Op/Reciprocal.cpp
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * 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.
+ */
+
+#include "Reciprocal.h"
+
+#include "ONNXHelpers.h"
+
+#include "mir/ops/ConstantOp.h"
+#include "mir/ops/DivOp.h"
+
+namespace mir_onnx
+{
+
+void ReciprocalNodeConverter::convert(const onnx::NodeProto &onnx_node,
+                                      ConverterContext *context) const
+{
+  std::vector<mir::Operation::Output *> inputs = context->getNodeInputs(onnx_node);
+  mir::Graph *graph = context->getGraph();
+
+  assert(inputs.size() == 1);
+  auto input = inputs[0];
+
+  const float one_value = 1.0f;
+  mir::TensorVariant one_tensor(mir::DataType::FLOAT32, mir::Shape{1}, &one_value);
+  auto one = createOp<mir::ops::ConstantOp>(graph, one_tensor)->getOutput(0);
+  auto result = createOp<mir::ops::DivOp>(graph, input, one)->getOutput(0);
+
+  context->setNodeOutputs(onnx_node, {result});
+}
+
+} // namespace mir_onnx
diff --git a/compiler/mir-onnx-importer/Op/Reciprocal.h b/compiler/mir-onnx-importer/Op/Reciprocal.h
new file mode 100644
index 0000000..46c935f
--- /dev/null
+++ b/compiler/mir-onnx-importer/Op/Reciprocal.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * 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.
+ */
+
+#ifndef MIR_ONNX_OP_RECIPROCAL_H
+#define MIR_ONNX_OP_RECIPROCAL_H
+
+#include "ONNXNodeConverterRegistry.h"
+
+namespace mir_onnx
+{
+
+class ReciprocalNodeConverter : public NodeConverter
+{
+public:
+  void convert(const onnx::NodeProto &onnx_node, ConverterContext *context) const override;
+};
+
+} // namespace mir_onnx
+
+#endif // MIR_ONNX_OP_RECIPROCAL_H
-- 
2.7.4