| 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-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "mlir/Tools/Plugins/PassPlugin.h" |
| 10 | #include "llvm/Support/raw_ostream.h" |
| 11 | |
| 12 | #include <cstdint> |
| 13 | |
| 14 | using namespace mlir; |
| 15 | |
| 16 | llvm::Expected<PassPlugin> PassPlugin::load(const std::string &filename) { |
| 17 | std::string error; |
| 18 | auto library = |
| 19 | llvm::sys::DynamicLibrary::getPermanentLibrary(filename: filename.c_str(), errMsg: &error); |
| 20 | if (!library.isValid()) |
| 21 | return llvm::make_error<llvm::StringError>( |
| 22 | Args: Twine("Could not load library '") + filename + "': "+ error, |
| 23 | Args: llvm::inconvertibleErrorCode()); |
| 24 | |
| 25 | PassPlugin plugin{filename, library}; |
| 26 | |
| 27 | // mlirGetPassPluginInfo should be resolved to the definition from the plugin |
| 28 | // we are currently loading. |
| 29 | intptr_t getDetailsFn = |
| 30 | (intptr_t)library.getAddressOfSymbol(symbolName: "mlirGetPassPluginInfo"); |
| 31 | |
| 32 | if (!getDetailsFn) |
| 33 | return llvm::make_error<llvm::StringError>( |
| 34 | Args: Twine("Plugin entry point not found in '") + filename, |
| 35 | Args: 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 | Args: Twine("Wrong API version on plugin '") + filename + "'. Got version "+ |
| 43 | Twine(plugin.info.apiVersion) + ", supported version is "+ |
| 44 | Twine(MLIR_PLUGIN_API_VERSION) + ".", |
| 45 | Args: llvm::inconvertibleErrorCode()); |
| 46 | |
| 47 | if (!plugin.info.registerPassRegistryCallbacks) |
| 48 | return llvm::make_error<llvm::StringError>( |
| 49 | Args: Twine("Empty entry callback in plugin '") + filename + "'.'", |
| 50 | Args: llvm::inconvertibleErrorCode()); |
| 51 | |
| 52 | return plugin; |
| 53 | } |
| 54 |