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Create C-runtime-style metadata module for llvm builds.
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * 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. | ||
| */ | ||
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| /*! | ||
| * \file llvm_module.h | ||
| * \brief Declares top-level shared functions related to the LLVM codegen. | ||
| */ | ||
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| #include <tvm/runtime/container.h> | ||
| #include <tvm/runtime/module.h> | ||
| #include <tvm/target/target.h> | ||
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| #ifdef TVM_LLVM_VERSION | ||
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| namespace tvm { | ||
| namespace codegen { | ||
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| runtime::Module CreateLLVMCrtMetadataModule(const Array<runtime::Module>& modules, Target target); | ||
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| } // namespace codegen | ||
| } // namespace tvm | ||
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| #endif // TVM_LLVM_VERSION |
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| @@ -0,0 +1,108 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| /*! | ||
| * \file metadata_module.cc | ||
| * \brief Defines functions that build MetadataModules for C++ and C runtimes. | ||
| */ | ||
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| #include "metadata_module.h" | ||
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| #include "../runtime/meta_data.h" | ||
| #include "llvm/llvm_module.h" | ||
| #include "source/source_module.h" | ||
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| namespace tvm { | ||
| namespace codegen { | ||
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| /*! | ||
| * \brief Create a metadata module wrapper. The helper is used by different | ||
| * codegens, such as graph runtime codegen and the vm compiler. | ||
| * | ||
| * \param params The metadata for initialization of all modules. | ||
| * \param target_module the internal module that is compiled by tvm. | ||
| * \param ext_modules The external modules that needs to be imported inside the metadata | ||
| * module(s). | ||
| * \param target The target that all the modules are compiled for | ||
| * \return The created metadata module that manages initialization of metadata. | ||
| */ | ||
| runtime::Module CreateMetadataModule( | ||
| const std::unordered_map<std::string, runtime::NDArray>& params, | ||
| tvm::runtime::Module target_module, const Array<runtime::Module>& ext_modules, Target target) { | ||
| Array<tvm::runtime::Module> csource_modules; | ||
| Array<tvm::runtime::Module> binary_modules; | ||
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| auto DSOExportable = [](tvm::runtime::Module& mod) { | ||
| return !std::strcmp(mod->type_key(), "llvm") || !std::strcmp(mod->type_key(), "c"); | ||
| }; | ||
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| // Wrap all submodules in the initialization wrapper. | ||
| std::unordered_map<std::string, std::vector<std::string>> sym_metadata; | ||
| for (tvm::runtime::Module mod : ext_modules) { | ||
| auto pf_sym = mod.GetFunction("get_symbol"); | ||
| auto pf_var = mod.GetFunction("get_const_vars"); | ||
| std::vector<std::string> arrays; | ||
| if (pf_sym != nullptr && pf_var != nullptr) { | ||
| String symbol = pf_sym(); | ||
| Array<String> variables = pf_var(); | ||
| for (size_t i = 0; i < variables.size(); i++) { | ||
| arrays.push_back(variables[i].operator std::string()); | ||
| } | ||
| ICHECK_EQ(sym_metadata.count(symbol), 0U) << "Found duplicated symbol: " << symbol; | ||
| sym_metadata[symbol] = arrays; | ||
| } | ||
| // We only need loading of serialized constant data | ||
| // if there are constants present and required by the | ||
| // runtime module to be initialized by the binary | ||
| // metadata module. If not rest of the modules are | ||
| // wrapped in c-source metadata module. | ||
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| // TODO(@manupa-arm) : we should be able to use csource_metadata | ||
| // if the variables are empty when all the runtime modules implement get_func_names | ||
| if (arrays.empty() && DSOExportable(mod) && target->kind->name == "c") { | ||
| csource_modules.push_back(mod); | ||
| } else { | ||
| binary_modules.push_back(mod); | ||
| } | ||
| } | ||
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| if (target.defined() && | ||
| target->GetAttr<String>("runtime").value_or(String("")) == kTvmRuntimeCrt) { | ||
| if (target->kind->name == "c") { | ||
| csource_modules.push_back(target_module); | ||
| target_module = CreateCSourceCrtMetadataModule(csource_modules, target); | ||
| } else if (target->kind->name == "llvm") { | ||
| binary_modules.push_back(target_module); | ||
| target_module = CreateLLVMCrtMetadataModule(binary_modules, target); | ||
| } | ||
| } else { | ||
| if (!binary_modules.empty()) { | ||
| runtime::Module binary_meta_mod = runtime::MetadataModuleCreate(params, sym_metadata); | ||
| binary_meta_mod.Import(target_module); | ||
| for (const auto& it : binary_modules) { | ||
| binary_meta_mod.Import(it); | ||
| } | ||
| return binary_meta_mod; | ||
| } | ||
| } | ||
| return target_module; | ||
| } | ||
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| } // namespace codegen | ||
| } // namespace tvm |
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