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Added -view-callgraph module pass.

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-dot-callgraph similarly follows a standard module pass pattern.

Patch by Speziale Ettore!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172220 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick
2013-01-11 17:28:14 +00:00
parent dced3cdb04
commit a125cacf7d
7 changed files with 208 additions and 99 deletions
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73
tools/opt/GraphPrinters.cpp
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@ -14,82 +14,11 @@
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/CallGraph.h"
#include "llvm/Analysis/Dominators.h"
#include "llvm/IR/Value.h"
#include "llvm/Pass.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/ToolOutputFile.h"
using namespace llvm;
template<typename GraphType>
static void WriteGraphToFile(raw_ostream &O, const std::string &GraphName,
const GraphType &GT) {
std::string Filename = GraphName + ".dot";
O << "Writing '" << Filename << "'...";
std::string ErrInfo;
tool_output_file F(Filename.c_str(), ErrInfo);
if (ErrInfo.empty()) {
WriteGraph(F.os(), GT);
F.os().close();
if (!F.os().has_error()) {
O << "\n";
F.keep();
return;
}
}
O << " error opening file for writing!\n";
F.os().clear_error();
}
//===----------------------------------------------------------------------===//
// Call Graph Printer
//===----------------------------------------------------------------------===//
namespace llvm {
template<>
struct DOTGraphTraits<CallGraph*> : public DefaultDOTGraphTraits {
DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {}
static std::string getGraphName(CallGraph *F) {
return "Call Graph";
}
static std::string getNodeLabel(CallGraphNode *Node, CallGraph *Graph) {
if (Node->getFunction())
return ((Value*)Node->getFunction())->getName();
return "external node";
}
};
}
namespace {
struct CallGraphPrinter : public ModulePass {
static char ID; // Pass ID, replacement for typeid
CallGraphPrinter() : ModulePass(ID) {}
virtual bool runOnModule(Module &M) {
WriteGraphToFile(llvm::errs(), "callgraph", &getAnalysis<CallGraph>());
return false;
}
void print(raw_ostream &OS, const llvm::Module*) const {}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<CallGraph>();
AU.setPreservesAll();
}
};
}
char CallGraphPrinter::ID = 0;
static RegisterPass<CallGraphPrinter> P2("dot-callgraph",
"Print Call Graph to 'dot' file");
//===----------------------------------------------------------------------===//
// DomInfoPrinter Pass
//===----------------------------------------------------------------------===//