src/llvm/include/llvm/Analysis/DOTGraphTraitsPass.h

   1 //===-- DOTGraphTraitsPass.h - Print/View dotty graphs-----------*- C++ -*-===//
   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 // Templates to create dotty viewer and printer passes for GraphTraits graphs.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_ANALYSIS_DOT_GRAPHTRAITS_PASS_H
  15 #define LLVM_ANALYSIS_DOT_GRAPHTRAITS_PASS_H
  16
  17 #include "llvm/Pass.h"
  18 #include "llvm/Analysis/CFGPrinter.h"
  19
  20 namespace llvm {
  21 template <class Analysis, bool Simple>
  22 struct DOTGraphTraitsViewer : public FunctionPass {
  23   std::string Name;
  24
  25   DOTGraphTraitsViewer(std::string GraphName, char &ID) : FunctionPass(ID) {
  26     Name = GraphName;
  27   }
  28
  29   virtual bool runOnFunction(Function &F) {
  30     Analysis *Graph;
  31     std::string Title, GraphName;
  32     Graph = &getAnalysis<Analysis>();
  33     GraphName = DOTGraphTraits<Analysis*>::getGraphName(Graph);
  34     Title = GraphName + " for '" + F.getName().str() + "' function";
  35     ViewGraph(Graph, Name, Simple, Title);
  36
  37     return false;
  38   }
  39
  40   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
  41     AU.setPreservesAll();
  42     AU.addRequired<Analysis>();
  43   }
  44 };
  45
  46 template <class Analysis, bool Simple>
  47 struct DOTGraphTraitsPrinter : public FunctionPass {
  48
  49   std::string Name;
  50
  51   DOTGraphTraitsPrinter(std::string GraphName, char &ID)
  52     : FunctionPass(ID) {
  53     Name = GraphName;
  54   }
  55
  56   virtual bool runOnFunction(Function &F) {
  57     Analysis *Graph;
  58     std::string Filename = Name + "." + F.getName().str() + ".dot";
  59     errs() << "Writing '" << Filename << "'...";
  60
  61     std::string ErrorInfo;
  62     raw_fd_ostream File(Filename.c_str(), ErrorInfo);
  63     Graph = &getAnalysis<Analysis>();
  64
  65     std::string Title, GraphName;
  66     GraphName = DOTGraphTraits<Analysis*>::getGraphName(Graph);
  67     Title = GraphName + " for '" + F.getName().str() + "' function";
  68
  69     if (ErrorInfo.empty())
  70       WriteGraph(File, Graph, Simple, Title);
  71     else
  72       errs() << "  error opening file for writing!";
  73     errs() << "\n";
  74     return false;
  75   }
  76
  77   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
  78     AU.setPreservesAll();
  79     AU.addRequired<Analysis>();
  80   }
  81 };
  82 }
  83 #endif