1 //===-- ModuleDebugInfoPrinter.cpp - Prints module debug info metadata ----===// 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 // This pass decodes the debug info metadata in a module and prints in a 11 // (sufficiently-prepared-) human-readable form. 12 // 13 // For example, run this pass from opt along with the -analyze option, and 14 // it'll print to standard output. 15 // 16 //===----------------------------------------------------------------------===// 17 18 #include "llvm/Analysis/Passes.h" 19 #include "llvm/Analysis/DebugInfo.h" 20 #include "llvm/Assembly/Writer.h" 21 #include "llvm/Pass.h" 22 #include "llvm/Function.h" 23 #include "llvm/Support/ErrorHandling.h" 24 #include "llvm/Support/raw_ostream.h" 25 #include "llvm/ADT/Statistic.h" 26 using namespace llvm; 27 28 namespace { 29 class ModuleDebugInfoPrinter : public ModulePass { 30 DebugInfoFinder Finder; 31 public: 32 static char ID; // Pass identification, replacement for typeid 33 ModuleDebugInfoPrinter() : ModulePass(ID) { 34 initializeModuleDebugInfoPrinterPass(*PassRegistry::getPassRegistry()); 35 } 36 37 virtual bool runOnModule(Module &M); 38 39 virtual void getAnalysisUsage(AnalysisUsage &AU) const { 40 AU.setPreservesAll(); 41 } 42 virtual void print(raw_ostream &O, const Module *M) const; 43 }; 44 } 45 46 char ModuleDebugInfoPrinter::ID = 0; 47 INITIALIZE_PASS(ModuleDebugInfoPrinter, "module-debuginfo", 48 "Decodes module-level debug info", false, true) 49 50 ModulePass *llvm::createModuleDebugInfoPrinterPass() { 51 return new ModuleDebugInfoPrinter(); 52 } 53 54 bool ModuleDebugInfoPrinter::runOnModule(Module &M) { 55 Finder.processModule(M); 56 return false; 57 } 58 59 void ModuleDebugInfoPrinter::print(raw_ostream &O, const Module *M) const { 60 for (DebugInfoFinder::iterator I = Finder.compile_unit_begin(), 61 E = Finder.compile_unit_end(); I != E; ++I) { 62 O << "Compile Unit: "; 63 DICompileUnit(*I).print(O); 64 O << '\n'; 65 } 66 67 for (DebugInfoFinder::iterator I = Finder.subprogram_begin(), 68 E = Finder.subprogram_end(); I != E; ++I) { 69 O << "Subprogram: "; 70 DISubprogram(*I).print(O); 71 O << '\n'; 72 } 73 74 for (DebugInfoFinder::iterator I = Finder.global_variable_begin(), 75 E = Finder.global_variable_end(); I != E; ++I) { 76 O << "GlobalVariable: "; 77 DIGlobalVariable(*I).print(O); 78 O << '\n'; 79 } 80 81 for (DebugInfoFinder::iterator I = Finder.type_begin(), 82 E = Finder.type_end(); I != E; ++I) { 83 O << "Type: "; 84 DIType(*I).print(O); 85 O << '\n'; 86 } 87 } 88
