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annotate lib/CodeGen/ScheduleDAGPrinter.cpp @ 100:7d135dc70f03 LLVM 3.9

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LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents 60c9769439b8
children 1172e4bd9c6f
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1 //===-- ScheduleDAGPrinter.cpp - Implement ScheduleDAG::viewGraph() -------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This implements the ScheduleDAG::viewGraph method.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "llvm/CodeGen/ScheduleDAG.h"
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15 #include "llvm/ADT/DenseSet.h"
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16 #include "llvm/ADT/StringExtras.h"
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17 #include "llvm/CodeGen/MachineConstantPool.h"
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18 #include "llvm/CodeGen/MachineFunction.h"
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19 #include "llvm/CodeGen/MachineModuleInfo.h"
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20 #include "llvm/IR/Constants.h"
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21 #include "llvm/Support/Debug.h"
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22 #include "llvm/Support/GraphWriter.h"
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23 #include "llvm/Support/raw_ostream.h"
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24 #include "llvm/Target/TargetRegisterInfo.h"
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25 #include <fstream>
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26 using namespace llvm;
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27
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28 namespace llvm {
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29 template<>
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30 struct DOTGraphTraits<ScheduleDAG*> : public DefaultDOTGraphTraits {
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31
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32 DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {}
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33
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34 static std::string getGraphName(const ScheduleDAG *G) {
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35 return G->MF.getName();
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36 }
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37
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38 static bool renderGraphFromBottomUp() {
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39 return true;
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40 }
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41
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42 static bool isNodeHidden(const SUnit *Node) {
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43 return (Node->NumPreds > 10 || Node->NumSuccs > 10);
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44 }
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45
100
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46 static std::string getNodeIdentifierLabel(const SUnit *Node,
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47 const ScheduleDAG *Graph) {
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48 std::string R;
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49 raw_string_ostream OS(R);
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50 OS << static_cast<const void *>(Node);
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51 return R;
0
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52 }
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53
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54 /// If you want to override the dot attributes printed for a particular
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55 /// edge, override this method.
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56 static std::string getEdgeAttributes(const SUnit *Node,
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57 SUnitIterator EI,
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58 const ScheduleDAG *Graph) {
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59 if (EI.isArtificialDep())
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60 return "color=cyan,style=dashed";
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61 if (EI.isCtrlDep())
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62 return "color=blue,style=dashed";
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63 return "";
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64 }
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65
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66
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67 std::string getNodeLabel(const SUnit *Node, const ScheduleDAG *Graph);
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68 static std::string getNodeAttributes(const SUnit *N,
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69 const ScheduleDAG *Graph) {
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70 return "shape=Mrecord";
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71 }
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72
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73 static void addCustomGraphFeatures(ScheduleDAG *G,
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74 GraphWriter<ScheduleDAG*> &GW) {
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75 return G->addCustomGraphFeatures(GW);
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76 }
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77 };
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78 }
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79
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80 std::string DOTGraphTraits<ScheduleDAG*>::getNodeLabel(const SUnit *SU,
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81 const ScheduleDAG *G) {
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82 return G->getGraphNodeLabel(SU);
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83 }
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84
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85 /// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
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86 /// rendered using 'dot'.
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87 ///
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88 void ScheduleDAG::viewGraph(const Twine &Name, const Twine &Title) {
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89 // This code is only for debugging!
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90 #ifndef NDEBUG
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91 ViewGraph(this, Name, false, Title);
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92 #else
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93 errs() << "ScheduleDAG::viewGraph is only available in debug builds on "
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94 << "systems with Graphviz or gv!\n";
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95 #endif // NDEBUG
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96 }
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97
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98 /// Out-of-line implementation with no arguments is handy for gdb.
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99 void ScheduleDAG::viewGraph() {
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100 viewGraph(getDAGName(), "Scheduling-Units Graph for " + getDAGName());
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101 }