1//===-- ScheduleDAGPrinter.cpp - Implement ScheduleDAG::viewGraph() -------===// 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 implements the ScheduleDAG::viewGraph method. 11// 12//===----------------------------------------------------------------------===// 13 14#include "llvm/Constants.h" 15#include "llvm/Assembly/Writer.h" 16#include "llvm/CodeGen/ScheduleDAG.h" 17#include "llvm/CodeGen/MachineConstantPool.h" 18#include "llvm/CodeGen/MachineFunction.h" 19#include "llvm/CodeGen/MachineModuleInfo.h" 20#include "llvm/Target/TargetRegisterInfo.h" 21#include "llvm/Target/TargetMachine.h" 22#include "llvm/Support/Debug.h" 23#include "llvm/Support/GraphWriter.h" 24#include "llvm/Support/raw_ostream.h" 25#include "llvm/ADT/DenseSet.h" 26#include "llvm/ADT/StringExtras.h" 27#include <fstream> 28using namespace llvm; 29 30namespace llvm { 31 template<> 32 struct DOTGraphTraits<ScheduleDAG*> : public DefaultDOTGraphTraits { 33 34 DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 35 36 static std::string getGraphName(const ScheduleDAG *G) { 37 return G->MF.getName(); 38 } 39 40 static bool renderGraphFromBottomUp() { 41 return true; 42 } 43 44 static bool hasNodeAddressLabel(const SUnit *Node, 45 const ScheduleDAG *Graph) { 46 return true; 47 } 48 49 /// If you want to override the dot attributes printed for a particular 50 /// edge, override this method. 51 static std::string getEdgeAttributes(const SUnit *Node, 52 SUnitIterator EI, 53 const ScheduleDAG *Graph) { 54 if (EI.isArtificialDep()) 55 return "color=cyan,style=dashed"; 56 if (EI.isCtrlDep()) 57 return "color=blue,style=dashed"; 58 return ""; 59 } 60 61 62 std::string getNodeLabel(const SUnit *Node, const ScheduleDAG *Graph); 63 static std::string getNodeAttributes(const SUnit *N, 64 const ScheduleDAG *Graph) { 65 return "shape=Mrecord"; 66 } 67 68 static void addCustomGraphFeatures(ScheduleDAG *G, 69 GraphWriter<ScheduleDAG*> &GW) { 70 return G->addCustomGraphFeatures(GW); 71 } 72 }; 73} 74 75std::string DOTGraphTraits<ScheduleDAG*>::getNodeLabel(const SUnit *SU, 76 const ScheduleDAG *G) { 77 return G->getGraphNodeLabel(SU); 78} 79 80/// viewGraph - Pop up a ghostview window with the reachable parts of the DAG 81/// rendered using 'dot'. 82/// 83void ScheduleDAG::viewGraph(const Twine &Name, const Twine &Title) { 84 // This code is only for debugging! 85#ifndef NDEBUG 86 ViewGraph(this, Name, false, Title); 87#else 88 errs() << "ScheduleDAG::viewGraph is only available in debug builds on " 89 << "systems with Graphviz or gv!\n"; 90#endif // NDEBUG 91} 92 93/// Out-of-line implementation with no arguments is handy for gdb. 94void ScheduleDAG::viewGraph() { 95 viewGraph(getDAGName(), "Scheduling-Units Graph for " + getDAGName()); 96} 97