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79ce276083
and into the ScheduleDAGInstrs class, so that they don't get destructed and re-constructed for each block. This fixes a compile-time hot spot in the post-pass scheduler. To help facilitate this, tidy and do some minor reorganization in the scheduler constructor functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62275 91177308-0d34-0410-b5e6-96231b3b80d8
94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
//===-- 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/Constants.h"
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#include "llvm/Function.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/CodeGen/ScheduleDAG.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/CodeGen/PseudoSourceValue.h"
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#include "llvm/Target/TargetRegisterInfo.h"
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#include "llvm/Target/TargetMachine.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/ADT/DenseSet.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Config/config.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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static std::string getGraphName(const ScheduleDAG *G) {
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return G->MF.getFunction()->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 hasNodeAddressLabel(const SUnit *Node,
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const ScheduleDAG *Graph) {
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return true;
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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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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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static std::string getNodeLabel(const SUnit *Node,
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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() {
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// This code is only for debugging!
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#ifndef NDEBUG
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ViewGraph(this, "dag." + MF.getFunction()->getName(),
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"Scheduling-Units Graph for " + MF.getFunction()->getName() + ':' +
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BB->getBasicBlock()->getName());
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#else
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cerr << "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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