1 //===- lib/Tools/Plugins/DialectPlugin.cpp - Load Dialect Plugins ---------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "mlir/Tools/Plugins/DialectPlugin.h" 10 #include "llvm/Support/raw_ostream.h" 11 12 #include <cstdint> 13 14 using namespace mlir; 15 load(const std::string & filename)16llvm::Expected<DialectPlugin> DialectPlugin::load(const std::string &filename) { 17 std::string error; 18 auto library = 19 llvm::sys::DynamicLibrary::getPermanentLibrary(filename.c_str(), &error); 20 if (!library.isValid()) 21 return llvm::make_error<llvm::StringError>( 22 Twine("Could not load library '") + filename + "': " + error, 23 llvm::inconvertibleErrorCode()); 24 25 DialectPlugin plugin{filename, library}; 26 27 // mlirGetDialectPluginInfo should be resolved to the definition from the 28 // plugin we are currently loading. 29 intptr_t getDetailsFn = 30 (intptr_t)library.getAddressOfSymbol("mlirGetDialectPluginInfo"); 31 32 if (!getDetailsFn) 33 return llvm::make_error<llvm::StringError>( 34 Twine("Plugin entry point not found in '") + filename, 35 llvm::inconvertibleErrorCode()); 36 37 plugin.info = 38 reinterpret_cast<decltype(mlirGetDialectPluginInfo) *>(getDetailsFn)(); 39 40 if (plugin.info.apiVersion != MLIR_PLUGIN_API_VERSION) 41 return llvm::make_error<llvm::StringError>( 42 Twine("Wrong API version on plugin '") + filename + "'. Got version " + 43 Twine(plugin.info.apiVersion) + ", supported version is " + 44 Twine(MLIR_PLUGIN_API_VERSION) + ".", 45 llvm::inconvertibleErrorCode()); 46 47 if (!plugin.info.registerDialectRegistryCallbacks) 48 return llvm::make_error<llvm::StringError>( 49 Twine("Empty entry callback in plugin '") + filename + "'.'", 50 llvm::inconvertibleErrorCode()); 51 52 return plugin; 53 } 54