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 21 using namespace llvm; 22 23 namespace { 24 25 struct BreakpointPrinter : public ModulePass { 26 raw_ostream &Out; 27 static char ID; 28 DITypeIdentifierMap TypeIdentifierMap; 29 BreakpointPrinter__anon5d77518a0111::BreakpointPrinter30 BreakpointPrinter(raw_ostream &out) : ModulePass(ID), Out(out) {} 31 getContextName__anon5d77518a0111::BreakpointPrinter32 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 runOnModule__anon5d77518a0111::BreakpointPrinter48 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).second) { 66 Out << Name << "\n"; 67 } 68 } 69 return false; 70 } 71 getAnalysisUsage__anon5d77518a0111::BreakpointPrinter72 void getAnalysisUsage(AnalysisUsage &AU) const override { 73 AU.setPreservesAll(); 74 } 75 }; 76 77 char BreakpointPrinter::ID = 0; 78 } 79 createBreakpointPrinter(raw_ostream & out)80ModulePass *llvm::createBreakpointPrinter(raw_ostream &out) { 81 return new BreakpointPrinter(out); 82 } 83