#include "llvm/Analysis/CFGPrinter.h"
#include "llvm/Pass.h"
using namespace llvm;
namespace {
struct CFGViewer : public FunctionPass {
static char ID; CFGViewer() : FunctionPass(&ID) {}
virtual bool runOnFunction(Function &F) {
F.viewCFG();
return false;
}
void print(raw_ostream &OS, const Module* = 0) const {}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
}
};
}
char CFGViewer::ID = 0;
static RegisterPass<CFGViewer>
V0("view-cfg", "View CFG of function", false, true);
namespace {
struct CFGOnlyViewer : public FunctionPass {
static char ID; CFGOnlyViewer() : FunctionPass(&ID) {}
virtual bool runOnFunction(Function &F) {
F.viewCFGOnly();
return false;
}
void print(raw_ostream &OS, const Module* = 0) const {}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
}
};
}
char CFGOnlyViewer::ID = 0;
static RegisterPass<CFGOnlyViewer>
V1("view-cfg-only",
"View CFG of function (with no function bodies)", false, true);
namespace {
struct CFGPrinter : public FunctionPass {
static char ID; CFGPrinter() : FunctionPass(&ID) {}
explicit CFGPrinter(void *pid) : FunctionPass(pid) {}
virtual bool runOnFunction(Function &F) {
std::string Filename = "cfg." + F.getNameStr() + ".dot";
errs() << "Writing '" << Filename << "'...";
std::string ErrorInfo;
raw_fd_ostream File(Filename.c_str(), ErrorInfo);
if (ErrorInfo.empty())
WriteGraph(File, (const Function*)&F);
else
errs() << " error opening file for writing!";
errs() << "\n";
return false;
}
void print(raw_ostream &OS, const Module* = 0) const {}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
}
};
}
char CFGPrinter::ID = 0;
static RegisterPass<CFGPrinter>
P1("dot-cfg", "Print CFG of function to 'dot' file", false, true);
namespace {
struct CFGOnlyPrinter : public FunctionPass {
static char ID; CFGOnlyPrinter() : FunctionPass(&ID) {}
explicit CFGOnlyPrinter(void *pid) : FunctionPass(pid) {}
virtual bool runOnFunction(Function &F) {
std::string Filename = "cfg." + F.getNameStr() + ".dot";
errs() << "Writing '" << Filename << "'...";
std::string ErrorInfo;
raw_fd_ostream File(Filename.c_str(), ErrorInfo);
if (ErrorInfo.empty())
WriteGraph(File, (const Function*)&F, true);
else
errs() << " error opening file for writing!";
errs() << "\n";
return false;
}
void print(raw_ostream &OS, const Module* = 0) const {}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
}
};
}
char CFGOnlyPrinter::ID = 0;
static RegisterPass<CFGOnlyPrinter>
P2("dot-cfg-only",
"Print CFG of function to 'dot' file (with no function bodies)", false, true);
void Function::viewCFG() const {
ViewGraph(this, "cfg" + getNameStr());
}
void Function::viewCFGOnly() const {
ViewGraph(this, "cfg" + getNameStr(), true);
}
FunctionPass *llvm::createCFGPrinterPass () {
return new CFGPrinter();
}
FunctionPass *llvm::createCFGOnlyPrinterPass () {
return new CFGOnlyPrinter();
}