From e2ef8438a24f7c56a0744eb579a6e293ee2fbf8e Mon Sep 17 00:00:00 2001
From: Chunseok Lee <chunseok.lee@samsung.com>
Date: Thu, 23 Apr 2020 14:45:49 +0900
Subject: Imported Upstream version 1.4.0

---
 compiler/exo/src/TFLite/TFLExporterUtils.h | 118 +++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 compiler/exo/src/TFLite/TFLExporterUtils.h

(limited to 'compiler/exo/src/TFLite/TFLExporterUtils.h')

diff --git a/compiler/exo/src/TFLite/TFLExporterUtils.h b/compiler/exo/src/TFLite/TFLExporterUtils.h
new file mode 100644
index 000000000..dbd7a52fb
--- /dev/null
+++ b/compiler/exo/src/TFLite/TFLExporterUtils.h
@@ -0,0 +1,118 @@
+/*
+ * 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 __TFL_EXPORTER_UTILS_H__
+#define __TFL_EXPORTER_UTILS_H__
+
+#include "ExporterUtils.h"
+
+#include "schema_generated.h"
+
+#include "Dialect/IR/TFLNodes.h"
+
+#include <loco.h>
+
+#include <unordered_map>
+
+namespace exo
+{
+namespace tflite_detail
+{
+
+struct OpCode
+{
+  tflite::BuiltinOperator opcode;
+
+  bool operator==(const OpCode &rhs) const { return opcode == rhs.opcode; }
+};
+
+} // namespace tflite_detail
+} // namespace exo
+
+namespace exo
+{
+
+tflite::ActivationFunctionType to_tflite_actfunc(locoex::FusedActFunc func);
+
+} // namespace exo
+
+namespace std
+{
+
+template <> struct hash<exo::tflite_detail::OpCode>
+{
+  size_t operator()(const exo::tflite_detail::OpCode &x) const { return hash<int>()(x.opcode); }
+};
+
+} // namespace std
+
+namespace exo
+{
+namespace tflite_detail
+{
+
+/**
+ * @breif Record the information of T/F Lite SubGraph and its mapping to loco
+ */
+struct SubGraphContext
+{
+  /// @brief SubGraph input tensor id
+  std::vector<int32_t> _inputs;
+  /// @brief SubGraph output tensor id
+  std::vector<int32_t> _outputs;
+};
+
+// Prerequisites for tflite::Model object creation
+struct SerializedModelData final : public SubGraphContext
+{
+  SerializedModelData() = default;
+  SerializedModelData(const SerializedModelData &) = delete;
+
+  std::unordered_map<OpCode, uint32_t> _operator_codes;
+  std::unordered_map<OpCode, std::string> _custom_operator_codes;
+  std::vector<flatbuffers::Offset<tflite::Operator>> _operators;
+  std::vector<flatbuffers::Offset<tflite::Tensor>> _tensors;
+  std::vector<flatbuffers::Offset<tflite::Buffer>> _buffers;
+
+  // Graph input and output names
+  std::unordered_map<loco::Pull *, std::string> _pull_to_name;
+  std::unordered_map<loco::Push *, std::string> _push_to_name;
+
+  /**
+   * @brief if opcode is not registered in table of opcodes add it
+   * @param builtin_code
+   * @return idx of opcode in table of opcodes (see schema)
+   */
+  uint32_t registerBuiltinOpcode(tflite::BuiltinOperator builtin_code);
+  uint32_t registerCustomOpcode(const std::string &custom_op);
+};
+
+tflite::Padding getOpPadding(const loco::Padding2D *pad, const loco::Stride<2> *stride,
+                             const ShapeDescription &ifm, const ShapeDescription &ofm);
+tflite::Padding getOpPadding(const locoex::Padding pad);
+
+/// @brief Register graph input and output names to SerializedModelData
+void registerGraphIOName(loco::Graph *graph, SerializedModelData &gd);
+
+using TFLTensorIndex = int32_t;
+
+void set_tensor_index(loco::Node *node, const TFLTensorIndex &tensor_id);
+TFLTensorIndex get_tensor_index(loco::Node *node);
+
+} // namespace tflite_detail
+} // namespace exo
+
+#endif // __TFL_EXPORTER_UTILS_H__
-- 
cgit v1.2.3