forked from OSchip/llvm-project
78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
//===- GraphPrinters.cpp - DOT printers for various graph types -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines several printers for various different types of graphs used
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// by the LLVM infrastructure. It uses the generic graph interface to convert
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// the graph into a .dot graph. These graphs can then be processed with the
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// "dot" tool to convert them to postscript or some other suitable format.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/GraphWriter.h"
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#include "llvm/Pass.h"
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#include "llvm/Value.h"
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#include "llvm/Analysis/CallGraph.h"
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#include <fstream>
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using namespace llvm;
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template<typename GraphType>
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static void WriteGraphToFile(std::ostream &O, const std::string &GraphName,
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const GraphType >) {
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std::string Filename = GraphName + ".dot";
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O << "Writing '" << Filename << "'...";
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std::ofstream F(Filename.c_str());
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if (F.good())
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WriteGraph(F, GT);
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else
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O << " error opening file for writing!";
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O << "\n";
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}
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//===----------------------------------------------------------------------===//
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// Call Graph Printer
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//===----------------------------------------------------------------------===//
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namespace llvm {
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template<>
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struct DOTGraphTraits<CallGraph*> : public DefaultDOTGraphTraits {
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static std::string getGraphName(CallGraph *F) {
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return "Call Graph";
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}
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static std::string getNodeLabel(CallGraphNode *Node, CallGraph *Graph) {
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if (Node->getFunction())
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return ((Value*)Node->getFunction())->getName();
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else
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return "Indirect call node";
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}
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};
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}
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namespace {
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struct CallGraphPrinter : public ModulePass {
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virtual bool runOnModule(Module &M) {
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WriteGraphToFile(std::cerr, "callgraph", &getAnalysis<CallGraph>());
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return false;
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}
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void print(std::ostream &OS) const {}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addRequired<CallGraph>();
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AU.setPreservesAll();
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}
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};
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RegisterAnalysis<CallGraphPrinter> P2("print-callgraph",
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"Print Call Graph to 'dot' file");
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};
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