blob: 38feee95a58ef8671b70d80013bf3bcf249a62d9 [file] [log] [blame]
//===-- ScheduleDAGPrinter.cpp - Implement ScheduleDAG::viewGraph() -------===//
// The LLVM Compiler Infrastructure
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
// This implements the ScheduleDAG::viewGraph method.
#include "llvm/Constants.h"
#include "llvm/Function.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/ScheduleDAG.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/StringExtras.h"
#include <fstream>
using namespace llvm;
namespace llvm {
struct DOTGraphTraits<ScheduleDAG*> : public DefaultDOTGraphTraits {
DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {}
static std::string getGraphName(const ScheduleDAG *G) {
return G->MF.getFunction()->getName();
static bool renderGraphFromBottomUp() {
return true;
static bool hasNodeAddressLabel(const SUnit *Node,
const ScheduleDAG *Graph) {
return true;
/// If you want to override the dot attributes printed for a particular
/// edge, override this method.
static std::string getEdgeAttributes(const SUnit *Node,
SUnitIterator EI,
const ScheduleDAG *Graph) {
if (EI.isArtificialDep())
return "color=cyan,style=dashed";
if (EI.isCtrlDep())
return "color=blue,style=dashed";
return "";
std::string getNodeLabel(const SUnit *Node, const ScheduleDAG *Graph);
static std::string getNodeAttributes(const SUnit *N,
const ScheduleDAG *Graph) {
return "shape=Mrecord";
static void addCustomGraphFeatures(ScheduleDAG *G,
GraphWriter<ScheduleDAG*> &GW) {
return G->addCustomGraphFeatures(GW);
std::string DOTGraphTraits<ScheduleDAG*>::getNodeLabel(const SUnit *SU,
const ScheduleDAG *G) {
return G->getGraphNodeLabel(SU);
/// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
/// rendered using 'dot'.
void ScheduleDAG::viewGraph(const Twine &Name, const Twine &Title) {
// This code is only for debugging!
#ifndef NDEBUG
ViewGraph(this, Name, false, Title);
errs() << "ScheduleDAG::viewGraph is only available in debug builds on "
<< "systems with Graphviz or gv!\n";
#endif // NDEBUG
/// Out-of-line implementation with no arguments is handy for gdb.
void ScheduleDAG::viewGraph() {
viewGraph(getDAGName(), "Scheduling-Units Graph for " + getDAGName());