//===- 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
//
//===----------------------------------------------------------------------===//
-#include "Support/GraphWriter.h"
+#include "llvm/IR/Dominators.h"
#include "llvm/Pass.h"
-#include "llvm/iTerminators.h"
-#include "llvm/Support/CFG.h"
-#include <sstream>
-#include <fstream>
-
-template<>
-struct DOTGraphTraits<Function*> : public DefaultDOTGraphTraits {
- static std::string getGraphName(Function *F) {
- return "CFG for '" + F->getName() + "' function";
- }
-
- static std::string getNodeLabel(BasicBlock *Node, Function *Graph) {
- std::ostringstream Out;
- Out << Node;
- std::string OutStr = Out.str();
- if (OutStr[0] == '\n') OutStr.erase(OutStr.begin());
-
- // Process string output to make it nicer...
- for (unsigned i = 0; i != OutStr.length(); ++i)
- if (OutStr[i] == '\n') { // Left justify
- OutStr[i] = '\\';
- OutStr.insert(OutStr.begin()+i+1, 'l');
- } else if (OutStr[i] == ';') { // Delete comments!
- unsigned Idx = OutStr.find('\n', i+1); // Find end of line
- OutStr.erase(OutStr.begin()+i, OutStr.begin()+Idx);
- --i;
- }
-
- return OutStr;
- }
-
- static std::string getNodeAttributes(BasicBlock *N) {
- return "fontname=Courier";
- }
-
- static std::string getEdgeSourceLabel(BasicBlock *Node, succ_iterator I) {
- // Label source of conditional branches with "T" or "F"
- if (BranchInst *BI = dyn_cast<BranchInst>(Node->getTerminator()))
- if (BI->isConditional())
- return (I == succ_begin(Node)) ? "T" : "F";
- return "";
- }
-};
-template<typename GraphType>
-static void WriteGraphToFile(std::ostream &O, const std::string &GraphName,
- const GraphType >) {
- std::string Filename = GraphName + ".dot";
- O << "Writing '" << Filename << "'...";
- std::ofstream F(Filename.c_str());
-
- if (F.good())
- WriteGraph(F, GT);
- else
- O << " error opening file for writing!";
- O << "\n";
-}
+using namespace llvm;
+//===----------------------------------------------------------------------===//
+// DomInfoPrinter Pass
+//===----------------------------------------------------------------------===//
namespace {
- struct CFGPrinter : public FunctionPass {
- Function *F;
- virtual bool runOnFunction(Function &Func) {
- WriteGraphToFile(std::cerr, "cfg."+Func.getName(), &Func);
- return false;
- }
+ class DomInfoPrinter : public FunctionPass {
+ public:
+ static char ID; // Pass identification, replacement for typeid
+ DomInfoPrinter() : FunctionPass(ID) {}
- void print(std::ostream &OS) const {}
-
- virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesAll();
+ AU.addRequired<DominatorTreeWrapperPass>();
+ }
+
+ bool runOnFunction(Function &F) override {
+ getAnalysis<DominatorTreeWrapperPass>().dump();
+ return false;
}
};
+}
- RegisterAnalysis<CFGPrinter> P1("print-cfg",
- "Print CFG of function to 'dot' file");
-};
+char DomInfoPrinter::ID = 0;
+static RegisterPass<DomInfoPrinter>
+DIP("print-dom-info", "Dominator Info Printer", true, true);