1 //===- GraphPrinters.cpp - DOT printers for various graph types -----------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines several printers for various different types of graphs used
11 // by the LLVM infrastructure. It uses the generic graph interface to convert
12 // the graph into a .dot graph. These graphs can then be processed with the
13 // "dot" tool to convert them to postscript or some other suitable format.
15 //===----------------------------------------------------------------------===//
17 #include "llvm/Support/GraphWriter.h"
18 #include "llvm/Pass.h"
19 #include "llvm/Value.h"
20 #include "llvm/Analysis/CallGraph.h"
21 #include "llvm/Analysis/Dominators.h"
26 template<typename GraphType>
27 static void WriteGraphToFile(std::ostream &O, const std::string &GraphName,
28 const GraphType >) {
29 std::string Filename = GraphName + ".dot";
30 O << "Writing '" << Filename << "'...";
32 raw_fd_ostream F(Filename.c_str(), ErrInfo);
37 O << " error opening file for writing!";
42 //===----------------------------------------------------------------------===//
44 //===----------------------------------------------------------------------===//
48 struct DOTGraphTraits<CallGraph*> : public DefaultDOTGraphTraits {
50 DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {}
52 static std::string getGraphName(CallGraph *F) {
56 static std::string getNodeLabel(CallGraphNode *Node, CallGraph *Graph) {
57 if (Node->getFunction())
58 return ((Value*)Node->getFunction())->getName();
60 return "Indirect call node";
67 struct CallGraphPrinter : public ModulePass {
68 static char ID; // Pass ID, replacement for typeid
69 CallGraphPrinter() : ModulePass(&ID) {}
71 virtual bool runOnModule(Module &M) {
72 WriteGraphToFile(std::cerr, "callgraph", &getAnalysis<CallGraph>());
76 void print(raw_ostream &OS, const llvm::Module*) const {}
78 virtual void getAnalysisUsage(AnalysisUsage &AU) const {
79 AU.addRequired<CallGraph>();
84 char CallGraphPrinter::ID = 0;
85 RegisterPass<CallGraphPrinter> P2("dot-callgraph",
86 "Print Call Graph to 'dot' file");
89 //===----------------------------------------------------------------------===//
90 // DomInfoPrinter Pass
91 //===----------------------------------------------------------------------===//
94 class DomInfoPrinter : public FunctionPass {
96 static char ID; // Pass identification, replacement for typeid
97 DomInfoPrinter() : FunctionPass(&ID) {}
99 virtual void getAnalysisUsage(AnalysisUsage &AU) const {
100 AU.setPreservesAll();
101 AU.addRequired<DominatorTree>();
102 AU.addRequired<DominanceFrontier>();
106 virtual bool runOnFunction(Function &F) {
107 DominatorTree &DT = getAnalysis<DominatorTree>();
109 DominanceFrontier &DF = getAnalysis<DominanceFrontier>();
115 char DomInfoPrinter::ID = 0;
116 static RegisterPass<DomInfoPrinter>
117 DIP("print-dom-info", "Dominator Info Printer", true, true);