1//===- GraphPrinters.cpp - DOT printers for various graph types -----------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file defines several printers for various different types of graphs used
11// by the LLVM infrastructure.  It uses the generic graph interface to convert
12// the graph into a .dot graph.  These graphs can then be processed with the
13// "dot" tool to convert them to postscript or some other suitable format.
14//
15//===----------------------------------------------------------------------===//
16
17#include "llvm/IR/Dominators.h"
18#include "llvm/Pass.h"
19
20using namespace llvm;
21
22//===----------------------------------------------------------------------===//
23//                            DomInfoPrinter Pass
24//===----------------------------------------------------------------------===//
25
26namespace {
27  class DomInfoPrinter : public FunctionPass {
28  public:
29    static char ID; // Pass identification, replacement for typeid
30    DomInfoPrinter() : FunctionPass(ID) {}
31
32    void getAnalysisUsage(AnalysisUsage &AU) const override {
33      AU.setPreservesAll();
34      AU.addRequired<DominatorTreeWrapperPass>();
35    }
36
37    bool runOnFunction(Function &F) override {
38      getAnalysis<DominatorTreeWrapperPass>().dump();
39      return false;
40    }
41  };
42}
43
44char DomInfoPrinter::ID = 0;
45static RegisterPass<DomInfoPrinter>
46DIP("print-dom-info", "Dominator Info Printer", true, true);
47