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/CodeGen/ScheduleDAG.h" 15#include "llvm/ADT/DenseSet.h" 16#include "llvm/ADT/StringExtras.h" 17#include "llvm/CodeGen/MachineConstantPool.h" 18#include "llvm/CodeGen/MachineFunction.h" 19#include "llvm/CodeGen/MachineModuleInfo.h" 20#include "llvm/IR/Constants.h" 21#include "llvm/Support/Debug.h" 22#include "llvm/Support/GraphWriter.h" 23#include "llvm/Support/raw_ostream.h" 24#include "llvm/Target/TargetRegisterInfo.h" 25#include <fstream> 26using namespace llvm; 27 28namespace llvm { 29 template<> 30 struct DOTGraphTraits<ScheduleDAG*> : public DefaultDOTGraphTraits { 31 32 DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {} 33 34 static std::string getGraphName(const ScheduleDAG *G) { 35 return G->MF.getName(); 36 } 37 38 static bool renderGraphFromBottomUp() { 39 return true; 40 } 41 42 static bool isNodeHidden(const SUnit *Node) { 43 return (Node->NumPreds > 10 || Node->NumSuccs > 10); 44 } 45 46 static bool hasNodeAddressLabel(const SUnit *Node, 47 const ScheduleDAG *Graph) { 48 return true; 49 } 50 51 /// If you want to override the dot attributes printed for a particular 52 /// edge, override this method. 53 static std::string getEdgeAttributes(const SUnit *Node, 54 SUnitIterator EI, 55 const ScheduleDAG *Graph) { 56 if (EI.isArtificialDep()) 57 return "color=cyan,style=dashed"; 58 if (EI.isCtrlDep()) 59 return "color=blue,style=dashed"; 60 return ""; 61 } 62 63 64 std::string getNodeLabel(const SUnit *Node, const ScheduleDAG *Graph); 65 static std::string getNodeAttributes(const SUnit *N, 66 const ScheduleDAG *Graph) { 67 return "shape=Mrecord"; 68 } 69 70 static void addCustomGraphFeatures(ScheduleDAG *G, 71 GraphWriter<ScheduleDAG*> &GW) { 72 return G->addCustomGraphFeatures(GW); 73 } 74 }; 75} 76 77std::string DOTGraphTraits<ScheduleDAG*>::getNodeLabel(const SUnit *SU, 78 const ScheduleDAG *G) { 79 return G->getGraphNodeLabel(SU); 80} 81 82/// viewGraph - Pop up a ghostview window with the reachable parts of the DAG 83/// rendered using 'dot'. 84/// 85void ScheduleDAG::viewGraph(const Twine &Name, const Twine &Title) { 86 // This code is only for debugging! 87#ifndef NDEBUG 88 ViewGraph(this, Name, false, Title); 89#else 90 errs() << "ScheduleDAG::viewGraph is only available in debug builds on " 91 << "systems with Graphviz or gv!\n"; 92#endif // NDEBUG 93} 94 95/// Out-of-line implementation with no arguments is handy for gdb. 96void ScheduleDAG::viewGraph() { 97 viewGraph(getDAGName(), "Scheduling-Units Graph for " + getDAGName()); 98} 99