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(DIDescriptor Context, std::string &N) { 33 if (Context.isNameSpace()) { 34 DINameSpace NS(Context); 35 if (!NS.getName().empty()) { 36 getContextName(NS.getContext(), N); 37 N = N + NS.getName().str() + "::"; 38 } 39 } else if (Context.isType()) { 40 DIType TY(Context); 41 if (!TY.getName().empty()) { 42 getContextName(TY.getContext().resolve(TypeIdentifierMap), N); 43 N = N + TY.getName().str() + "::"; 44 } 45 } 46 } 47 48 bool runOnModule(Module &M) override { 49 TypeIdentifierMap.clear(); 50 NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu"); 51 if (CU_Nodes) 52 TypeIdentifierMap = generateDITypeIdentifierMap(CU_Nodes); 53 54 StringSet<> Processed; 55 if (NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.sp")) 56 for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) { 57 std::string Name; 58 DISubprogram SP(NMD->getOperand(i)); 59 assert((!SP || SP.isSubprogram()) && 60 "A MDNode in llvm.dbg.sp should be null or a DISubprogram."); 61 if (!SP) 62 continue; 63 getContextName(SP.getContext().resolve(TypeIdentifierMap), Name); 64 Name = Name + SP.getDisplayName().str(); 65 if (!Name.empty() && Processed.insert(Name)) { 66 Out << Name << "\n"; 67 } 68 } 69 return false; 70 } 71 72 void getAnalysisUsage(AnalysisUsage &AU) const override { 73 AU.setPreservesAll(); 74 } 75}; 76 77char BreakpointPrinter::ID = 0; 78} 79 80ModulePass *llvm::createBreakpointPrinter(raw_ostream &out) { 81 return new BreakpointPrinter(out); 82} 83