llvm/llvm/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp

//===-- SelectionDAGPrinter.cpp - Implement SelectionDAG::viewGraph() -----===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This implements the SelectionDAG::viewGraph method.
//
//===----------------------------------------------------------------------===//

#include "ScheduleDAGSDNodes.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/raw_ostream.h"
usingnamespacellvm;

#define DEBUG_TYPE …

namespace llvm {
  template<>
  struct DOTGraphTraits<SelectionDAG*> : public DefaultDOTGraphTraits { … };
}

std::string DOTGraphTraits<SelectionDAG*>::getNodeLabel(const SDNode *Node,
                                                        const SelectionDAG *G) { … }


/// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
/// rendered using 'dot'.
///
void SelectionDAG::viewGraph(const std::string &Title) { … }

// This overload is defined out-of-line here instead of just using a
// default parameter because this is easiest for gdb to call.
void SelectionDAG::viewGraph() { … }

/// Just dump dot graph to a user-provided path and title.
/// This doesn't open the dot viewer program and
/// helps visualization when outside debugging session.
/// FileName expects absolute path. If provided
/// without any path separators then the file
/// will be created in the current directory.
/// Error will be emitted if the path is insane.
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
LLVM_DUMP_METHOD void SelectionDAG::dumpDotGraph(const Twine &FileName,
                                                 const Twine &Title) {
  dumpDotGraphToFile(this, FileName, Title);
}
#endif

/// clearGraphAttrs - Clear all previously defined node graph attributes.
/// Intended to be used from a debugging tool (eg. gdb).
void SelectionDAG::clearGraphAttrs() { … }


/// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".)
///
void SelectionDAG::setGraphAttrs(const SDNode *N, const char *Attrs) { … }


/// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".)
/// Used from getNodeAttributes.
std::string SelectionDAG::getGraphAttrs(const SDNode *N) const { … }

/// setGraphColor - Convenience for setting node color attribute.
///
void SelectionDAG::setGraphColor(const SDNode *N, const char *Color) { … }

/// setSubgraphColorHelper - Implement setSubgraphColor.  Return
/// whether we truncated the search.
///
bool SelectionDAG::setSubgraphColorHelper(SDNode *N, const char *Color, DenseSet<SDNode *> &visited,
                                          int level, bool &printed) { … }

/// setSubgraphColor - Convenience for setting subgraph color attribute.
///
void SelectionDAG::setSubgraphColor(SDNode *N, const char *Color) { … }

std::string ScheduleDAGSDNodes::getGraphNodeLabel(const SUnit *SU) const { … }

void ScheduleDAGSDNodes::getCustomGraphFeatures(GraphWriter<ScheduleDAG*> &GW) const { … }