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101 lines
3.2 KiB
101 lines
3.2 KiB
4 months ago
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//===-- ScheduleDAGPrinter.cpp - Implement ScheduleDAG::viewGraph() -------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This implements the ScheduleDAG::viewGraph method.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/ScheduleDAG.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/CodeGen/MachineConstantPool.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineModuleInfo.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/GraphWriter.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Target/TargetRegisterInfo.h"
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#include <fstream>
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using namespace llvm;
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namespace llvm {
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template<>
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struct DOTGraphTraits<ScheduleDAG*> : public DefaultDOTGraphTraits {
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DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {}
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static std::string getGraphName(const ScheduleDAG *G) {
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return G->MF.getName();
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}
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static bool renderGraphFromBottomUp() {
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return true;
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}
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static bool isNodeHidden(const SUnit *Node) {
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return (Node->NumPreds > 10 || Node->NumSuccs > 10);
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}
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static std::string getNodeIdentifierLabel(const SUnit *Node,
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const ScheduleDAG *Graph) {
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std::string R;
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raw_string_ostream OS(R);
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OS << static_cast<const void *>(Node);
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return R;
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}
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/// If you want to override the dot attributes printed for a particular
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/// edge, override this method.
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static std::string getEdgeAttributes(const SUnit *Node,
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SUnitIterator EI,
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const ScheduleDAG *Graph) {
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if (EI.isArtificialDep())
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return "color=cyan,style=dashed";
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if (EI.isCtrlDep())
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return "color=blue,style=dashed";
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return "";
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}
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std::string getNodeLabel(const SUnit *Node, const ScheduleDAG *Graph);
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static std::string getNodeAttributes(const SUnit *N,
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const ScheduleDAG *Graph) {
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return "shape=Mrecord";
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}
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static void addCustomGraphFeatures(ScheduleDAG *G,
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GraphWriter<ScheduleDAG*> &GW) {
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return G->addCustomGraphFeatures(GW);
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}
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};
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}
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std::string DOTGraphTraits<ScheduleDAG*>::getNodeLabel(const SUnit *SU,
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const ScheduleDAG *G) {
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return G->getGraphNodeLabel(SU);
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}
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/// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
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/// rendered using 'dot'.
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///
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void ScheduleDAG::viewGraph(const Twine &Name, const Twine &Title) {
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// This code is only for debugging!
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#ifndef NDEBUG
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ViewGraph(this, Name, false, Title);
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#else
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errs() << "ScheduleDAG::viewGraph is only available in debug builds on "
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<< "systems with Graphviz or gv!\n";
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#endif // NDEBUG
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}
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/// Out-of-line implementation with no arguments is handy for gdb.
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void ScheduleDAG::viewGraph() {
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viewGraph(getDAGName(), "Scheduling-Units Graph for " + getDAGName());
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}
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