unittests/Passes/PluginsTest.cpp

   1 //===- unittests/Passes/Plugins/PluginsTest.cpp ---------------------------===//
   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 "llvm/Analysis/CGSCCPassManager.h"
  10 #include "llvm/Config/config.h"
  11 #include "llvm/IR/PassManager.h"
  12 #include "llvm/Passes/PassBuilder.h"
  13 #include "llvm/Passes/PassPlugin.h"
  14 #include "llvm/Support/FileSystem.h"
  15 #include "llvm/Support/ManagedStatic.h"
  16 #include "llvm/Support/Path.h"
  17 #include "llvm/Testing/Support/Error.h"
  18 #include "llvm/Transforms/Scalar/LoopPassManager.h"
  19 #include "gtest/gtest.h"
  20
  21 #include "TestPlugin.h"
  22
  23 #include <cstdint>
  24
  25 using namespace llvm;
  26
  27 void anchor() {}
  28
  29 static std::string LibPath(const std::string Name = "TestPlugin") {
  30   const std::vector<testing::internal::string> &Argvs =
  31       testing::internal::GetArgvs();
  32   const char *Argv0 = Argvs.size() > 0 ? Argvs[0].c_str() : "PluginsTests";
  33   void *Ptr = (void *)(intptr_t)anchor;
  34   std::string Path = sys::fs::getMainExecutable(Argv0, Ptr);
  35   llvm::SmallString<256> Buf{sys::path::parent_path(Path)};
  36   sys::path::append(Buf, (Name + LTDL_SHLIB_EXT).c_str());
  37   return Buf.str();
  38 }
  39
  40 TEST(PluginsTests, LoadPlugin) {
  41 #if !defined(LLVM_ENABLE_PLUGINS)
  42   // Disable the test if plugins are disabled.
  43   return;
  44 #endif
  45
  46   auto PluginPath = LibPath();
  47   ASSERT_NE("", PluginPath);
  48
  49   Expected<PassPlugin> Plugin = PassPlugin::Load(PluginPath);
  50   ASSERT_TRUE(!!Plugin) << "Plugin path: " << PluginPath;
  51
  52   ASSERT_EQ(TEST_PLUGIN_NAME, Plugin->getPluginName());
  53   ASSERT_EQ(TEST_PLUGIN_VERSION, Plugin->getPluginVersion());
  54
  55   PassBuilder PB;
  56   ModulePassManager PM;
  57   ASSERT_THAT_ERROR(PB.parsePassPipeline(PM, "plugin-pass"), Failed());
  58
  59   Plugin->registerPassBuilderCallbacks(PB);
  60   ASSERT_THAT_ERROR(PB.parsePassPipeline(PM, "plugin-pass"), Succeeded());
  61 }