ashutosh-arm commented on a change in pull request #8951: URL: https://github.com/apache/tvm/pull/8951#discussion_r711172103
########## File path: src/relay/backend/contrib/cmsisnn/tir_to_runtime.cc ########## @@ -0,0 +1,138 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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 <cmath> +#include <fstream> +#include <map> +#include <sstream> +#include <string> +#include <vector> + +#include "../../../../runtime/file_utils.h" +#include "../../../../target/source/codegen_c.h" + +namespace tvm { +namespace codegen { + +using namespace tir; + +class CodeGenCMSISNN : public CodeGenC { + public: + void Init(bool output_ssa) { + decl_stream << "#include <stdio.h>\n"; + decl_stream << "#include <stdlib.h>\n"; + decl_stream << "#include <dlpack/dlpack.h>\n"; + decl_stream << "#include <tvm/runtime/crt/module.h>\n"; + decl_stream << "#include <arm_nnfunctions.h>\n"; + CodeGenC::Init(output_ssa); + } + + /*! + * \brief Emit code that offloads a subgraph to the Cortex-M + * + * \return string of code that offloads a subgraph to the Cortex-M + */ + void AddFunction(const PrimFunc& prim_func) { + PrintExternCPrefix(stream); + CodeGenC::AddFunction(prim_func); + PrintExternCPostfix(stream); + } + + private: + /*! * \brief Creates a cplusplus guard prefix for extern "C" printing */ + void PrintExternCPrefix(std::ostringstream& ss) { + PrintIndent(); + ss << "#ifdef __cplusplus\n"; + ss << "extern \"C\" {\n"; + ss << "#endif\n"; + } + + /*! * \brief Creates a cplusplus guard postfix for extern "C" printing */ + void PrintExternCPostfix(std::ostringstream& ss) { + PrintIndent(); + ss << "#ifdef __cplusplus\n"; + ss << "}\n"; + ss << "#endif\n"; + } +}; + +class CMSISNNModuleNode : public runtime::ModuleNode { + public: + CMSISNNModuleNode(const std::string& code, const std::string& fmt, + const Array<String>& func_names) + : code_(code), fmt_(fmt), func_names_(func_names) {} + + std::string GetSource(const std::string& format) final { return code_; } + + const char* type_key() const { return "c"; } + + PackedFunc GetFunction(const std::string& name, const ObjectPtr<Object>& sptr_to_self) final { + if (name == "get_symbol") { + return PackedFunc( + [sptr_to_self, this](TVMArgs args, TVMRetValue* rv) { *rv = this->func_names_[0]; }); + } else if (name == "get_func_names") { + return PackedFunc( + [sptr_to_self, this](TVMArgs args, TVMRetValue* rv) { *rv = this->func_names_; }); + } else { + return PackedFunc(nullptr); + } + } + + void SaveToFile(const std::string& file_name, const std::string& format) final { + std::string fmt = runtime::GetFileFormat(file_name, format); + std::string meta_file = runtime::GetMetaFilePath(file_name); + if (fmt == "c") { + ICHECK_NE(code_.length(), 0); + runtime::SaveBinaryToFile(file_name, code_); + } else { + ICHECK_EQ(fmt, fmt_) << "Can only save to format=" << fmt_; + } + } + + protected: + std::string code_; Review comment: Sure. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
