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 BreakpointPrinter__anon0c3a614a0111::BreakpointPrinter29 BreakpointPrinter(raw_ostream &out) : ModulePass(ID), Out(out) {} 30 getContextName__anon0c3a614a0111::BreakpointPrinter31 void getContextName(const DIScope *Context, std::string &N) { 32 if (auto *NS = dyn_cast<DINamespace>(Context)) { 33 if (!NS->getName().empty()) { 34 getContextName(NS->getScope(), N); 35 N = N + NS->getName().str() + "::"; 36 } 37 } else if (auto *TY = dyn_cast<DIType>(Context)) { 38 if (!TY->getName().empty()) { 39 getContextName(TY->getScope().resolve(), N); 40 N = N + TY->getName().str() + "::"; 41 } 42 } 43 } 44 runOnModule__anon0c3a614a0111::BreakpointPrinter45 bool runOnModule(Module &M) override { 46 StringSet<> Processed; 47 if (NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.sp")) 48 for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) { 49 std::string Name; 50 auto *SP = cast_or_null<DISubprogram>(NMD->getOperand(i)); 51 if (!SP) 52 continue; 53 getContextName(SP->getScope().resolve(), Name); 54 Name = Name + SP->getDisplayName().str(); 55 if (!Name.empty() && Processed.insert(Name).second) { 56 Out << Name << "\n"; 57 } 58 } 59 return false; 60 } 61 getAnalysisUsage__anon0c3a614a0111::BreakpointPrinter62 void getAnalysisUsage(AnalysisUsage &AU) const override { 63 AU.setPreservesAll(); 64 } 65 }; 66 67 char BreakpointPrinter::ID = 0; 68 } 69 createBreakpointPrinter(raw_ostream & out)70ModulePass *llvm::createBreakpointPrinter(raw_ostream &out) { 71 return new BreakpointPrinter(out); 72 } 73