1//===- BreakpointPrinter.cpp - Breakpoint location printer ----------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9/// 10/// \file 11/// \brief Breakpoint location printer. 12/// 13//===----------------------------------------------------------------------===// 14#include "BreakpointPrinter.h" 15#include "llvm/ADT/StringSet.h" 16#include "llvm/IR/DebugInfo.h" 17#include "llvm/IR/Module.h" 18#include "llvm/Pass.h" 19#include "llvm/Support/raw_ostream.h" 20 21using namespace llvm; 22 23namespace { 24 25struct BreakpointPrinter : public ModulePass { 26 raw_ostream &Out; 27 static char ID; 28 DITypeIdentifierMap TypeIdentifierMap; 29 30 BreakpointPrinter(raw_ostream &out) : ModulePass(ID), Out(out) {} 31 32 void getContextName(const DIScope *Context, std::string &N) { 33 if (auto *NS = dyn_cast<DINamespace>(Context)) { 34 if (!NS->getName().empty()) { 35 getContextName(NS->getScope(), N); 36 N = N + NS->getName().str() + "::"; 37 } 38 } else if (auto *TY = dyn_cast<DIType>(Context)) { 39 if (!TY->getName().empty()) { 40 getContextName(TY->getScope().resolve(TypeIdentifierMap), N); 41 N = N + TY->getName().str() + "::"; 42 } 43 } 44 } 45 46 bool runOnModule(Module &M) override { 47 TypeIdentifierMap.clear(); 48 NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu"); 49 if (CU_Nodes) 50 TypeIdentifierMap = generateDITypeIdentifierMap(CU_Nodes); 51 52 StringSet<> Processed; 53 if (NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.sp")) 54 for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) { 55 std::string Name; 56 auto *SP = cast_or_null<DISubprogram>(NMD->getOperand(i)); 57 if (!SP) 58 continue; 59 getContextName(SP->getScope().resolve(TypeIdentifierMap), Name); 60 Name = Name + SP->getDisplayName().str(); 61 if (!Name.empty() && Processed.insert(Name).second) { 62 Out << Name << "\n"; 63 } 64 } 65 return false; 66 } 67 68 void getAnalysisUsage(AnalysisUsage &AU) const override { 69 AU.setPreservesAll(); 70 } 71}; 72 73char BreakpointPrinter::ID = 0; 74} 75 76ModulePass *llvm::createBreakpointPrinter(raw_ostream &out) { 77 return new BreakpointPrinter(out); 78} 79