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//===- CallPrinter.cpp - DOT printer for call graph -----------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines '-dot-callgraph', which emit a callgraph.<fnname>.dot
// containing the call graph of a module.
//
// There is also a pass available to directly call dotty ('-view-callgraph').
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/CallGraph.h"
#include "llvm/Analysis/CallPrinter.h"
#include "llvm/Analysis/DOTGraphTraitsPass.h"
using namespace llvm;
namespace llvm {
template <> struct DOTGraphTraits<CallGraph *> : public DefaultDOTGraphTraits {
DOTGraphTraits(bool isSimple = false) : DefaultDOTGraphTraits(isSimple) {}
static std::string getGraphName(CallGraph *Graph) { return "Call graph"; }
std::string getNodeLabel(CallGraphNode *Node, CallGraph *Graph) {
if (Function *Func = Node->getFunction())
return Func->getName();
return "external node";
}
};
struct AnalysisCallGraphWrapperPassTraits {
static CallGraph *getGraph(CallGraphWrapperPass *P) {
return &P->getCallGraph();
}
};
} // end llvm namespace
namespace {
struct CallGraphViewer
: public DOTGraphTraitsModuleViewer<CallGraphWrapperPass, true, CallGraph *,
AnalysisCallGraphWrapperPassTraits> {
static char ID;
CallGraphViewer()
: DOTGraphTraitsModuleViewer<CallGraphWrapperPass, true, CallGraph *,
AnalysisCallGraphWrapperPassTraits>(
"callgraph", ID) {
initializeCallGraphViewerPass(*PassRegistry::getPassRegistry());
}
};
struct CallGraphPrinter : public DOTGraphTraitsModulePrinter<
CallGraphWrapperPass, true, CallGraph *,
AnalysisCallGraphWrapperPassTraits> {
static char ID;
CallGraphPrinter()
: DOTGraphTraitsModulePrinter<CallGraphWrapperPass, true, CallGraph *,
AnalysisCallGraphWrapperPassTraits>(
"callgraph", ID) {
initializeCallGraphPrinterPass(*PassRegistry::getPassRegistry());
}
};
} // end anonymous namespace
char CallGraphViewer::ID = 0;
INITIALIZE_PASS(CallGraphViewer, "view-callgraph", "View call graph", false,
false)
char CallGraphPrinter::ID = 0;
INITIALIZE_PASS(CallGraphPrinter, "dot-callgraph",
"Print call graph to 'dot' file", false, false)
// Create methods available outside of this file, to use them
// "include/llvm/LinkAllPasses.h". Otherwise the pass would be deleted by
// the link time optimization.
ModulePass *llvm::createCallGraphViewerPass() { return new CallGraphViewer(); }
ModulePass *llvm::createCallGraphPrinterPass() {
return new CallGraphPrinter();
}
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