54 lines · cpp
1//===- lib/Tools/Plugins/PassPlugin.cpp - Load Plugins for PR Passes ------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "mlir/Tools/Plugins/PassPlugin.h"10#include "llvm/Support/raw_ostream.h"11 12#include <cstdint>13 14using namespace mlir;15 16llvm::Expected<PassPlugin> PassPlugin::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 PassPlugin plugin{filename, library};26 27 // mlirGetPassPluginInfo should be resolved to the definition from the plugin28 // we are currently loading.29 intptr_t getDetailsFn =30 (intptr_t)library.getAddressOfSymbol("mlirGetPassPluginInfo");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(mlirGetPassPluginInfo) *>(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.registerPassRegistryCallbacks)48 return llvm::make_error<llvm::StringError>(49 Twine("Empty entry callback in plugin '") + filename + "'.'",50 llvm::inconvertibleErrorCode());51 52 return plugin;53}54