llvm-project/llvm/unittests/Passes/PluginsTest.cpp

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//===- unittests/Passes/Plugins/PluginsTest.cpp ---------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/CGSCCPassManager.h"
#include "llvm/Config/config.h"
#include "llvm/IR/PassManager.h"
#include "llvm/Passes/PassBuilder.h"
#include "llvm/Passes/PassPlugin.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/Path.h"
#include "llvm/Transforms/Scalar/LoopPassManager.h"
#include "gtest/gtest.h"
#include "TestPlugin.h"
#include <cstdint>
using namespace llvm;
void anchor() {}
static std::string LibPath(const std::string Name = "TestPlugin") {
const std::vector<testing::internal::string> &Argvs =
testing::internal::GetArgvs();
const char *Argv0 = Argvs.size() > 0 ? Argvs[0].c_str() : "PluginsTests";
void *Ptr = (void *)(intptr_t)anchor;
std::string Path = sys::fs::getMainExecutable(Argv0, Ptr);
llvm::SmallString<256> Buf{sys::path::parent_path(Path)};
sys::path::append(Buf, (Name + LTDL_SHLIB_EXT).c_str());
return Buf.str();
}
TEST(PluginsTests, LoadPlugin) {
#if !defined(LLVM_ENABLE_PLUGINS)
// Disable the test if plugins are disabled.
return;
#endif
auto PluginPath = LibPath();
ASSERT_NE("", PluginPath);
Expected<PassPlugin> Plugin = PassPlugin::Load(PluginPath);
ASSERT_TRUE(!!Plugin) << "Plugin path: " << PluginPath;
ASSERT_EQ(TEST_PLUGIN_NAME, Plugin->getPluginName());
ASSERT_EQ(TEST_PLUGIN_VERSION, Plugin->getPluginVersion());
PassBuilder PB;
ModulePassManager PM;
ASSERT_FALSE(PB.parsePassPipeline(PM, "plugin-pass"));
Plugin->registerPassBuilderCallbacks(PB);
ASSERT_TRUE(PB.parsePassPipeline(PM, "plugin-pass"));
}