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- The world needs better C++ refactoring tools, can I get an Amen!? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79843 91177308-0d34-0410-b5e6-96231b3b80d8
294 lines
9.4 KiB
C++
294 lines
9.4 KiB
C++
//===-- SelectionDAGPrinter.cpp - Implement SelectionDAG::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 SelectionDAG::viewGraph method.
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//
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//===----------------------------------------------------------------------===//
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#include "ScheduleDAGSDNodes.h"
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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/SelectionDAG.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/Analysis/DebugInfo.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<SelectionDAG*> : public DefaultDOTGraphTraits {
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static bool hasEdgeDestLabels() {
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return true;
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}
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static unsigned numEdgeDestLabels(const void *Node) {
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return ((const SDNode *) Node)->getNumValues();
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}
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static std::string getEdgeDestLabel(const void *Node, unsigned i) {
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return ((const SDNode *) Node)->getValueType(i).getEVTString();
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}
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/// edgeTargetsEdgeSource - This method returns true if this outgoing edge
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/// should actually target another edge source, not a node. If this method is
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/// implemented, getEdgeTarget should be implemented.
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template<typename EdgeIter>
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static bool edgeTargetsEdgeSource(const void *Node, EdgeIter I) {
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return true;
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}
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/// getEdgeTarget - If edgeTargetsEdgeSource returns true, this method is
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/// called to determine which outgoing edge of Node is the target of this
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/// edge.
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template<typename EdgeIter>
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static EdgeIter getEdgeTarget(const void *Node, EdgeIter I) {
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SDNode *TargetNode = *I;
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SDNodeIterator NI = SDNodeIterator::begin(TargetNode);
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std::advance(NI, I.getNode()->getOperand(I.getOperand()).getResNo());
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return NI;
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}
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static std::string getGraphName(const SelectionDAG *G) {
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return G->getMachineFunction().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 SDNode *Node,
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const SelectionDAG *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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template<typename EdgeIter>
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static std::string getEdgeAttributes(const void *Node, EdgeIter EI) {
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SDValue Op = EI.getNode()->getOperand(EI.getOperand());
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EVT VT = Op.getValueType();
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if (VT == MVT::Flag)
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return "color=red,style=bold";
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else if (VT == MVT::Other)
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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 SDNode *Node,
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const SelectionDAG *Graph,
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bool ShortNames);
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static std::string getNodeAttributes(const SDNode *N,
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const SelectionDAG *Graph) {
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#ifndef NDEBUG
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const std::string &Attrs = Graph->getGraphAttrs(N);
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if (!Attrs.empty()) {
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if (Attrs.find("shape=") == std::string::npos)
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return std::string("shape=Mrecord,") + Attrs;
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else
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return Attrs;
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}
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#endif
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return "shape=Mrecord";
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}
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static void addCustomGraphFeatures(SelectionDAG *G,
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GraphWriter<SelectionDAG*> &GW) {
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GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
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if (G->getRoot().getNode())
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GW.emitEdge(0, -1, G->getRoot().getNode(), G->getRoot().getResNo(),
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"color=blue,style=dashed");
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}
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};
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}
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std::string DOTGraphTraits<SelectionDAG*>::getNodeLabel(const SDNode *Node,
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const SelectionDAG *G,
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bool ShortNames) {
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std::string Result = Node->getOperationName(G);
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{
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raw_string_ostream OS(Result);
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Node->print_details(OS, G);
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}
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return Result;
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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 SelectionDAG::viewGraph(const std::string &Title) {
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// This code is only for debugging!
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#ifndef NDEBUG
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ViewGraph(this, "dag." + getMachineFunction().getFunction()->getNameStr(),
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false, Title);
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#else
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errs() << "SelectionDAG::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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// This overload is defined out-of-line here instead of just using a
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// default parameter because this is easiest for gdb to call.
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void SelectionDAG::viewGraph() {
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viewGraph("");
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}
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/// clearGraphAttrs - Clear all previously defined node graph attributes.
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/// Intended to be used from a debugging tool (eg. gdb).
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void SelectionDAG::clearGraphAttrs() {
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#ifndef NDEBUG
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NodeGraphAttrs.clear();
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#else
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errs() << "SelectionDAG::clearGraphAttrs is only available in debug builds"
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<< " on systems with Graphviz or gv!\n";
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#endif
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}
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/// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".)
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///
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void SelectionDAG::setGraphAttrs(const SDNode *N, const char *Attrs) {
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#ifndef NDEBUG
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NodeGraphAttrs[N] = Attrs;
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#else
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errs() << "SelectionDAG::setGraphAttrs is only available in debug builds"
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<< " on systems with Graphviz or gv!\n";
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#endif
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}
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/// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".)
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/// Used from getNodeAttributes.
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const std::string SelectionDAG::getGraphAttrs(const SDNode *N) const {
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#ifndef NDEBUG
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std::map<const SDNode *, std::string>::const_iterator I =
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NodeGraphAttrs.find(N);
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if (I != NodeGraphAttrs.end())
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return I->second;
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else
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return "";
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#else
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errs() << "SelectionDAG::getGraphAttrs is only available in debug builds"
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<< " on systems with Graphviz or gv!\n";
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return std::string("");
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#endif
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}
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/// setGraphColor - Convenience for setting node color attribute.
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///
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void SelectionDAG::setGraphColor(const SDNode *N, const char *Color) {
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#ifndef NDEBUG
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NodeGraphAttrs[N] = std::string("color=") + Color;
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#else
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errs() << "SelectionDAG::setGraphColor is only available in debug builds"
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<< " on systems with Graphviz or gv!\n";
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#endif
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}
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/// setSubgraphColorHelper - Implement setSubgraphColor. Return
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/// whether we truncated the search.
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///
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bool SelectionDAG::setSubgraphColorHelper(SDNode *N, const char *Color, DenseSet<SDNode *> &visited,
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int level, bool &printed) {
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bool hit_limit = false;
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#ifndef NDEBUG
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if (level >= 20) {
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if (!printed) {
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printed = true;
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DEBUG(errs() << "setSubgraphColor hit max level\n");
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}
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return true;
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}
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unsigned oldSize = visited.size();
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visited.insert(N);
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if (visited.size() != oldSize) {
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setGraphColor(N, Color);
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for(SDNodeIterator i = SDNodeIterator::begin(N), iend = SDNodeIterator::end(N);
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i != iend;
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++i) {
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hit_limit = setSubgraphColorHelper(*i, Color, visited, level+1, printed) || hit_limit;
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}
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}
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#else
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errs() << "SelectionDAG::setSubgraphColor is only available in debug builds"
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<< " on systems with Graphviz or gv!\n";
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#endif
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return hit_limit;
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}
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/// setSubgraphColor - Convenience for setting subgraph color attribute.
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///
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void SelectionDAG::setSubgraphColor(SDNode *N, const char *Color) {
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#ifndef NDEBUG
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DenseSet<SDNode *> visited;
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bool printed = false;
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if (setSubgraphColorHelper(N, Color, visited, 0, printed)) {
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// Visually mark that we hit the limit
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if (strcmp(Color, "red") == 0) {
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setSubgraphColorHelper(N, "blue", visited, 0, printed);
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}
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else if (strcmp(Color, "yellow") == 0) {
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setSubgraphColorHelper(N, "green", visited, 0, printed);
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}
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}
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#else
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errs() << "SelectionDAG::setSubgraphColor is only available in debug builds"
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<< " on systems with Graphviz or gv!\n";
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#endif
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}
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std::string ScheduleDAGSDNodes::getGraphNodeLabel(const SUnit *SU) const {
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std::string s;
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raw_string_ostream O(s);
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O << "SU(" << SU->NodeNum << "): ";
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if (SU->getNode()) {
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SmallVector<SDNode *, 4> FlaggedNodes;
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for (SDNode *N = SU->getNode(); N; N = N->getFlaggedNode())
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FlaggedNodes.push_back(N);
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while (!FlaggedNodes.empty()) {
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O << DOTGraphTraits<SelectionDAG*>::getNodeLabel(FlaggedNodes.back(),
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DAG, false);
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FlaggedNodes.pop_back();
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if (!FlaggedNodes.empty())
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O << "\n ";
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}
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} else {
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O << "CROSS RC COPY";
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}
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return O.str();
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}
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void ScheduleDAGSDNodes::getCustomGraphFeatures(GraphWriter<ScheduleDAG*> &GW) const {
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if (DAG) {
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// Draw a special "GraphRoot" node to indicate the root of the graph.
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GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
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const SDNode *N = DAG->getRoot().getNode();
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if (N && N->getNodeId() != -1)
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GW.emitEdge(0, -1, &SUnits[N->getNodeId()], -1,
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"color=blue,style=dashed");
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}
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}
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