ModuleDebugInfoPrinter.cpp revision ce665bd2e2b581ab0858d1afe359192bac96b868
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" 26using namespace llvm; 27 28namespace { 29 class ModuleDebugInfoPrinter : public ModulePass { 30 DebugInfoFinder Finder; 31 public: 32 static char ID; // Pass identification, replacement for typeid 33 ModuleDebugInfoPrinter() : ModulePass(ID) {} 34 35 virtual bool runOnModule(Module &M); 36 37 virtual void getAnalysisUsage(AnalysisUsage &AU) const { 38 AU.setPreservesAll(); 39 } 40 virtual void print(raw_ostream &O, const Module *M) const; 41 }; 42} 43 44char ModuleDebugInfoPrinter::ID = 0; 45INITIALIZE_PASS(ModuleDebugInfoPrinter, "module-debuginfo", 46 "Decodes module-level debug info", false, true) 47 48ModulePass *llvm::createModuleDebugInfoPrinterPass() { 49 return new ModuleDebugInfoPrinter(); 50} 51 52bool ModuleDebugInfoPrinter::runOnModule(Module &M) { 53 Finder.processModule(M); 54 return false; 55} 56 57void ModuleDebugInfoPrinter::print(raw_ostream &O, const Module *M) const { 58 for (DebugInfoFinder::iterator I = Finder.compile_unit_begin(), 59 E = Finder.compile_unit_end(); I != E; ++I) { 60 O << "Compile Unit: "; 61 DICompileUnit(*I).print(O); 62 O << '\n'; 63 } 64 65 for (DebugInfoFinder::iterator I = Finder.subprogram_begin(), 66 E = Finder.subprogram_end(); I != E; ++I) { 67 O << "Subprogram: "; 68 DISubprogram(*I).print(O); 69 O << '\n'; 70 } 71 72 for (DebugInfoFinder::iterator I = Finder.global_variable_begin(), 73 E = Finder.global_variable_end(); I != E; ++I) { 74 O << "GlobalVariable: "; 75 DIGlobalVariable(*I).print(O); 76 O << '\n'; 77 } 78 79 for (DebugInfoFinder::iterator I = Finder.type_begin(), 80 E = Finder.type_end(); I != E; ++I) { 81 O << "Type: "; 82 DIType(*I).print(O); 83 O << '\n'; 84 } 85} 86