| 1 | #include "llvm/IR/Function.h" |
|---|---|
| 2 | #include "llvm/IR/LegacyPassManager.h" |
| 3 | #include "llvm/Pass.h" |
| 4 | #include "llvm/Passes/PassBuilder.h" |
| 5 | #include "llvm/Passes/PassPlugin.h" |
| 6 | #include "llvm/Support/CommandLine.h" |
| 7 | #include "llvm/Support/raw_ostream.h" |
| 8 | |
| 9 | using namespace llvm; |
| 10 | |
| 11 | static cl::opt<bool> Wave("wave-goodbye", cl::init(Val: false), |
| 12 | cl::desc("wave good bye")); |
| 13 | |
| 14 | namespace { |
| 15 | |
| 16 | bool runBye(Function &F) { |
| 17 | if (Wave) { |
| 18 | errs() << "Bye: "; |
| 19 | errs().write_escaped(Str: F.getName()) << '\n'; |
| 20 | } |
| 21 | return false; |
| 22 | } |
| 23 | |
| 24 | struct LegacyBye : public FunctionPass { |
| 25 | static char ID; |
| 26 | LegacyBye() : FunctionPass(ID) {} |
| 27 | bool runOnFunction(Function &F) override { return runBye(F); } |
| 28 | }; |
| 29 | |
| 30 | struct Bye : PassInfoMixin<Bye> { |
| 31 | PreservedAnalyses run(Function &F, FunctionAnalysisManager &) { |
| 32 | if (!runBye(F)) |
| 33 | return PreservedAnalyses::all(); |
| 34 | return PreservedAnalyses::none(); |
| 35 | } |
| 36 | }; |
| 37 | |
| 38 | } // namespace |
| 39 | |
| 40 | char LegacyBye::ID = 0; |
| 41 | |
| 42 | static RegisterPass<LegacyBye> X("goodbye", "Good Bye World Pass", |
| 43 | false /* Only looks at CFG */, |
| 44 | false /* Analysis Pass */); |
| 45 | |
| 46 | /* New PM Registration */ |
| 47 | llvm::PassPluginLibraryInfo getByePluginInfo() { |
| 48 | return {LLVM_PLUGIN_API_VERSION, .PluginName: "Bye", LLVM_VERSION_STRING, |
| 49 | .RegisterPassBuilderCallbacks: [](PassBuilder &PB) { |
| 50 | PB.registerVectorizerStartEPCallback( |
| 51 | C: [](llvm::FunctionPassManager &PM, OptimizationLevel Level) { |
| 52 | PM.addPass(Pass: Bye()); |
| 53 | }); |
| 54 | PB.registerPipelineParsingCallback( |
| 55 | C: [](StringRef Name, llvm::FunctionPassManager &PM, |
| 56 | ArrayRef<llvm::PassBuilder::PipelineElement>) { |
| 57 | if (Name == "goodbye") { |
| 58 | PM.addPass(Pass: Bye()); |
| 59 | return true; |
| 60 | } |
| 61 | return false; |
| 62 | }); |
| 63 | }}; |
| 64 | } |
| 65 | |
| 66 | #ifndef LLVM_BYE_LINK_INTO_TOOLS |
| 67 | extern "C"LLVM_ATTRIBUTE_WEAK ::llvm::PassPluginLibraryInfo |
| 68 | llvmGetPassPluginInfo() { |
| 69 | return getByePluginInfo(); |
| 70 | } |
| 71 | #endif |
| 72 |