llvm-project/llvm/tools/opt/GraphPrinters.cpp

48 lines
1.6 KiB
C++

//===- GraphPrinters.cpp - DOT printers for various graph types -----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines several printers for various different types of graphs used
// by the LLVM infrastructure. It uses the generic graph interface to convert
// the graph into a .dot graph. These graphs can then be processed with the
// "dot" tool to convert them to postscript or some other suitable format.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/Dominators.h"
#include "llvm/Pass.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
// DomInfoPrinter Pass
//===----------------------------------------------------------------------===//
namespace {
class DomInfoPrinter : public FunctionPass {
public:
static char ID; // Pass identification, replacement for typeid
DomInfoPrinter() : FunctionPass(ID) {}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
AU.addRequired<DominatorTree>();
}
virtual bool runOnFunction(Function &F) {
getAnalysis<DominatorTree>().dump();
return false;
}
};
}
char DomInfoPrinter::ID = 0;
static RegisterPass<DomInfoPrinter>
DIP("print-dom-info", "Dominator Info Printer", true, true);