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 << "'...";
31 std::ofstream F(Filename.c_str());
36 O << " error opening file for writing!";
41 //===----------------------------------------------------------------------===//
43 //===----------------------------------------------------------------------===//
47 struct DOTGraphTraits<CallGraph*> : public DefaultDOTGraphTraits {
48 static std::string getGraphName(CallGraph *F) {
52 static std::string getNodeLabel(CallGraphNode *Node, CallGraph *Graph,
54 if (Node->getFunction())
55 return ((Value*)Node->getFunction())->getName();
57 return "Indirect call node";
64 struct CallGraphPrinter : public ModulePass {
65 static char ID; // Pass ID, replacement for typeid
66 CallGraphPrinter() : ModulePass(&ID) {}
68 virtual bool runOnModule(Module &M) {
69 WriteGraphToFile(std::cerr, "callgraph", &getAnalysis<CallGraph>());
73 void print(std::ostream &OS) const {}
74 void print(std::ostream &OS, const llvm::Module*) const {}
76 virtual void getAnalysisUsage(AnalysisUsage &AU) const {
77 AU.addRequired<CallGraph>();
82 char CallGraphPrinter::ID = 0;
83 RegisterPass<CallGraphPrinter> P2("dot-callgraph",
84 "Print Call Graph to 'dot' file");
87 //===----------------------------------------------------------------------===//
88 // DomInfoPrinter Pass
89 //===----------------------------------------------------------------------===//
92 class DomInfoPrinter : public FunctionPass {
94 static char ID; // Pass identification, replacement for typeid
95 DomInfoPrinter() : FunctionPass(&ID) {}
97 virtual void getAnalysisUsage(AnalysisUsage &AU) const {
99 AU.addRequired<DominatorTree>();
100 AU.addRequired<DominanceFrontier>();
104 virtual bool runOnFunction(Function &F) {
105 DominatorTree &DT = getAnalysis<DominatorTree>();
107 DominanceFrontier &DF = getAnalysis<DominanceFrontier>();
113 char DomInfoPrinter::ID = 0;
114 static RegisterPass<DomInfoPrinter>
115 DIP("print-dom-info", "Dominator Info Printer", true, true);