forked from OSchip/llvm-project
70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
#include "llvm/IR/Function.h"
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#include "llvm/IR/LegacyPassManager.h"
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#include "llvm/Pass.h"
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#include "llvm/Passes/PassBuilder.h"
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#include "llvm/Passes/PassPlugin.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Transforms/IPO/PassManagerBuilder.h"
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using namespace llvm;
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static cl::opt<bool> Wave("wave-goodbye", cl::init(false),
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cl::desc("wave good bye"));
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namespace {
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bool runBye(Function &F) {
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if (Wave) {
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errs() << "Bye: ";
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errs().write_escaped(F.getName()) << '\n';
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}
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return false;
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}
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struct LegacyBye : public FunctionPass {
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static char ID;
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LegacyBye() : FunctionPass(ID) {}
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bool runOnFunction(Function &F) override { return runBye(F); }
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};
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struct Bye : PassInfoMixin<Bye> {
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PreservedAnalyses run(Function &F, FunctionAnalysisManager &) {
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if (!runBye(F))
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return PreservedAnalyses::all();
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return PreservedAnalyses::none();
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}
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};
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} // namespace
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char LegacyBye::ID = 0;
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static RegisterPass<LegacyBye> X("goodbye", "Good Bye World Pass",
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false /* Only looks at CFG */,
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false /* Analysis Pass */);
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/* Legacy PM Registration */
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static llvm::RegisterStandardPasses RegisterBye(
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llvm::PassManagerBuilder::EP_EarlyAsPossible,
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[](const llvm::PassManagerBuilder &Builder,
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llvm::legacy::PassManagerBase &PM) { PM.add(new LegacyBye()); });
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/* New PM Registration */
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llvm::PassPluginLibraryInfo getByePluginInfo() {
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return {LLVM_PLUGIN_API_VERSION, "Bye", LLVM_VERSION_STRING,
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[](PassBuilder &PB) {
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PB.registerVectorizerStartEPCallback(
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[](llvm::FunctionPassManager &PM,
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llvm::PassBuilder::OptimizationLevel Level) {
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PM.addPass(Bye());
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});
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}};
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}
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#ifndef LLVM_BYE_LINK_INTO_TOOLS
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extern "C" LLVM_ATTRIBUTE_WEAK ::llvm::PassPluginLibraryInfo
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llvmGetPassPluginInfo() {
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return getByePluginInfo();
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}
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#endif
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