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//===-- DOTGraphTraitsPass.h - Print/View dotty graphs-----------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Templates to create dotty viewer and printer passes for GraphTraits graphs.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ANALYSIS_DOTGRAPHTRAITSPASS_H
#define LLVM_ANALYSIS_DOTGRAPHTRAITSPASS_H
#include "llvm/Analysis/CFGPrinter.h"
namespace llvm {
/// Default traits class for extracting a graph from an analysis pass.
///
/// This assumes that 'GraphT' is 'AnalysisT *' and so just passes it through.
template <typename AnalysisT, typename GraphT = AnalysisT *>
struct DefaultAnalysisGraphTraits {
static GraphT getGraph(AnalysisT *A) { return A; }
};
template <
typename AnalysisT, bool IsSimple, typename GraphT = AnalysisT *,
typename AnalysisGraphTraitsT = DefaultAnalysisGraphTraits<AnalysisT, GraphT> >
class DOTGraphTraitsViewer : public FunctionPass {
public:
DOTGraphTraitsViewer(StringRef GraphName, char &ID)
: FunctionPass(ID), Name(GraphName) {}
/// Return true if this function should be processed.
///
/// An implementation of this class my override this function to indicate that
/// only certain functions should be viewed.
///
/// @param Analysis The current analysis result for this function.
virtual bool processFunction(Function &F, AnalysisT &Analysis) {
return true;
}
bool runOnFunction(Function &F) override {
auto &Analysis = getAnalysis<AnalysisT>();
if (!processFunction(F, Analysis))
return false;
GraphT Graph = AnalysisGraphTraitsT::getGraph(&Analysis);
std::string GraphName = DOTGraphTraits<GraphT>::getGraphName(Graph);
std::string Title = GraphName + " for '" + F.getName().str() + "' function";
ViewGraph(Graph, Name, IsSimple, Title);
return false;
}
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesAll();
AU.addRequired<AnalysisT>();
}
private:
std::string Name;
};
template <
typename AnalysisT, bool IsSimple, typename GraphT = AnalysisT *,
typename AnalysisGraphTraitsT = DefaultAnalysisGraphTraits<AnalysisT, GraphT> >
class DOTGraphTraitsPrinter : public FunctionPass {
public:
DOTGraphTraitsPrinter(StringRef GraphName, char &ID)
: FunctionPass(ID), Name(GraphName) {}
/// Return true if this function should be processed.
///
/// An implementation of this class my override this function to indicate that
/// only certain functions should be printed.
///
/// @param Analysis The current analysis result for this function.
virtual bool processFunction(Function &F, AnalysisT &Analysis) {
return true;
}
bool runOnFunction(Function &F) override {
auto &Analysis = getAnalysis<AnalysisT>();
if (!processFunction(F, Analysis))
return false;
GraphT Graph = AnalysisGraphTraitsT::getGraph(&Analysis);
std::string Filename = Name + "." + F.getName().str() + ".dot";
std::error_code EC;
errs() << "Writing '" << Filename << "'...";
raw_fd_ostream File(Filename, EC, sys::fs::OF_Text);
std::string GraphName = DOTGraphTraits<GraphT>::getGraphName(Graph);
std::string Title = GraphName + " for '" + F.getName().str() + "' function";
if (!EC)
WriteGraph(File, Graph, IsSimple, Title);
else
errs() << " error opening file for writing!";
errs() << "\n";
return false;
}
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesAll();
AU.addRequired<AnalysisT>();
}
private:
std::string Name;
};
template <
typename AnalysisT, bool IsSimple, typename GraphT = AnalysisT *,
typename AnalysisGraphTraitsT = DefaultAnalysisGraphTraits<AnalysisT, GraphT> >
class DOTGraphTraitsModuleViewer : public ModulePass {
public:
DOTGraphTraitsModuleViewer(StringRef GraphName, char &ID)
: ModulePass(ID), Name(GraphName) {}
bool runOnModule(Module &M) override {
GraphT Graph = AnalysisGraphTraitsT::getGraph(&getAnalysis<AnalysisT>());
std::string Title = DOTGraphTraits<GraphT>::getGraphName(Graph);
ViewGraph(Graph, Name, IsSimple, Title);
return false;
}
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesAll();
AU.addRequired<AnalysisT>();
}
private:
std::string Name;
};
template <
typename AnalysisT, bool IsSimple, typename GraphT = AnalysisT *,
typename AnalysisGraphTraitsT = DefaultAnalysisGraphTraits<AnalysisT, GraphT> >
class DOTGraphTraitsModulePrinter : public ModulePass {
public:
DOTGraphTraitsModulePrinter(StringRef GraphName, char &ID)
: ModulePass(ID), Name(GraphName) {}
bool runOnModule(Module &M) override {
GraphT Graph = AnalysisGraphTraitsT::getGraph(&getAnalysis<AnalysisT>());
std::string Filename = Name + ".dot";
std::error_code EC;
errs() << "Writing '" << Filename << "'...";
raw_fd_ostream File(Filename, EC, sys::fs::OF_Text);
std::string Title = DOTGraphTraits<GraphT>::getGraphName(Graph);
if (!EC)
WriteGraph(File, Graph, IsSimple, Title);
else
errs() << " error opening file for writing!";
errs() << "\n";
return false;
}
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesAll();
AU.addRequired<AnalysisT>();
}
private:
std::string Name;
};
} // end namespace llvm
#endif
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