//===-- SelectionDAGPrinter.cpp - Implement SelectionDAG::viewGraph() -----===//
-//
+//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
//===----------------------------------------------------------------------===//
//
// This implements the SelectionDAG::viewGraph method.
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/SelectionDAG.h"
+#include "ScheduleDAGSDNodes.h"
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/Function.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DebugInfo.h"
+#include "llvm/Support/Debug.h"
#include "llvm/Support/GraphWriter.h"
-#include "llvm/ADT/StringExtras.h"
-#include <fstream>
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetRegisterInfo.h"
using namespace llvm;
+#define DEBUG_TYPE "dag-printer"
+
namespace llvm {
template<>
struct DOTGraphTraits<SelectionDAG*> : public DefaultDOTGraphTraits {
+
+ explicit DOTGraphTraits(bool isSimple=false) :
+ DefaultDOTGraphTraits(isSimple) {}
+
+ static bool hasEdgeDestLabels() {
+ return true;
+ }
+
+ static unsigned numEdgeDestLabels(const void *Node) {
+ return ((const SDNode *) Node)->getNumValues();
+ }
+
+ static std::string getEdgeDestLabel(const void *Node, unsigned i) {
+ return ((const SDNode *) Node)->getValueType(i).getEVTString();
+ }
+
+ template<typename EdgeIter>
+ static std::string getEdgeSourceLabel(const void *Node, EdgeIter I) {
+ return itostr(I - SDNodeIterator::begin((const SDNode *) Node));
+ }
+
+ /// edgeTargetsEdgeSource - This method returns true if this outgoing edge
+ /// should actually target another edge source, not a node. If this method
+ /// is implemented, getEdgeTarget should be implemented.
+ template<typename EdgeIter>
+ static bool edgeTargetsEdgeSource(const void *Node, EdgeIter I) {
+ return true;
+ }
+
+ /// getEdgeTarget - If edgeTargetsEdgeSource returns true, this method is
+ /// called to determine which outgoing edge of Node is the target of this
+ /// edge.
+ template<typename EdgeIter>
+ static EdgeIter getEdgeTarget(const void *Node, EdgeIter I) {
+ SDNode *TargetNode = *I;
+ SDNodeIterator NI = SDNodeIterator::begin(TargetNode);
+ std::advance(NI, I.getNode()->getOperand(I.getOperand()).getResNo());
+ return NI;
+ }
+
static std::string getGraphName(const SelectionDAG *G) {
- return G->getMachineFunction().getFunction()->getName();
+ return G->getMachineFunction().getName();
}
static bool renderGraphFromBottomUp() {
return true;
}
- static std::string getNodeLabel(const SDNode *Node,
- const SelectionDAG *Graph);
- static std::string getNodeAttributes(const SDNode *N) {
+ static bool hasNodeAddressLabel(const SDNode *Node,
+ const SelectionDAG *Graph) {
+ return true;
+ }
+
+ /// If you want to override the dot attributes printed for a particular
+ /// edge, override this method.
+ template<typename EdgeIter>
+ static std::string getEdgeAttributes(const void *Node, EdgeIter EI,
+ const SelectionDAG *Graph) {
+ SDValue Op = EI.getNode()->getOperand(EI.getOperand());
+ EVT VT = Op.getValueType();
+ if (VT == MVT::Glue)
+ return "color=red,style=bold";
+ else if (VT == MVT::Other)
+ return "color=blue,style=dashed";
+ return "";
+ }
+
+
+ static std::string getSimpleNodeLabel(const SDNode *Node,
+ const SelectionDAG *G) {
+ std::string Result = Node->getOperationName(G);
+ {
+ raw_string_ostream OS(Result);
+ Node->print_details(OS, G);
+ }
+ return Result;
+ }
+ std::string getNodeLabel(const SDNode *Node, const SelectionDAG *Graph);
+ static std::string getNodeAttributes(const SDNode *N,
+ const SelectionDAG *Graph) {
+#ifndef NDEBUG
+ const std::string &Attrs = Graph->getGraphAttrs(N);
+ if (!Attrs.empty()) {
+ if (Attrs.find("shape=") == std::string::npos)
+ return std::string("shape=Mrecord,") + Attrs;
+ else
+ return Attrs;
+ }
+#endif
return "shape=Mrecord";
}
static void addCustomGraphFeatures(SelectionDAG *G,
GraphWriter<SelectionDAG*> &GW) {
- GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
- GW.emitEdge(0, -1, G->getRoot().Val, -1, "");
+ GW.emitSimpleNode(nullptr, "plaintext=circle", "GraphRoot");
+ if (G->getRoot().getNode())
+ GW.emitEdge(nullptr, -1, G->getRoot().getNode(), G->getRoot().getResNo(),
+ "color=blue,style=dashed");
}
};
}
std::string DOTGraphTraits<SelectionDAG*>::getNodeLabel(const SDNode *Node,
const SelectionDAG *G) {
- std::string Op = Node->getOperationName();
-
- for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) {
- switch (Node->getValueType(i)) {
- default: Op += ":unknownvt!"; break;
- case MVT::Other: Op += ":ch"; break;
- case MVT::i1: Op += ":i1"; break;
- case MVT::i8: Op += ":i8"; break;
- case MVT::i16: Op += ":i16"; break;
- case MVT::i32: Op += ":i32"; break;
- case MVT::i64: Op += ":i64"; break;
- case MVT::i128: Op += ":i128"; break;
- case MVT::f32: Op += ":f32"; break;
- case MVT::f64: Op += ":f64"; break;
- case MVT::f80: Op += ":f80"; break;
- case MVT::f128: Op += ":f128"; break;
- case MVT::isVoid: Op += ":void"; break;
+ return DOTGraphTraits<SelectionDAG*>::getSimpleNodeLabel(Node, 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 code is only for debugging!
+#ifndef NDEBUG
+ ViewGraph(this, "dag." + getMachineFunction().getName(),
+ false, Title);
+#else
+ errs() << "SelectionDAG::viewGraph is only available in debug builds on "
+ << "systems with Graphviz or gv!\n";
+#endif // NDEBUG
+}
+
+// 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() {
+ viewGraph("");
+}
+
+/// clearGraphAttrs - Clear all previously defined node graph attributes.
+/// Intended to be used from a debugging tool (eg. gdb).
+void SelectionDAG::clearGraphAttrs() {
+#ifndef NDEBUG
+ NodeGraphAttrs.clear();
+#else
+ errs() << "SelectionDAG::clearGraphAttrs is only available in debug builds"
+ << " on systems with Graphviz or gv!\n";
+#endif
+}
+
+
+/// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".)
+///
+void SelectionDAG::setGraphAttrs(const SDNode *N, const char *Attrs) {
+#ifndef NDEBUG
+ NodeGraphAttrs[N] = Attrs;
+#else
+ errs() << "SelectionDAG::setGraphAttrs is only available in debug builds"
+ << " on systems with Graphviz or gv!\n";
+#endif
+}
+
+
+/// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".)
+/// Used from getNodeAttributes.
+const std::string SelectionDAG::getGraphAttrs(const SDNode *N) const {
+#ifndef NDEBUG
+ std::map<const SDNode *, std::string>::const_iterator I =
+ NodeGraphAttrs.find(N);
+
+ if (I != NodeGraphAttrs.end())
+ return I->second;
+ else
+ return "";
+#else
+ errs() << "SelectionDAG::getGraphAttrs is only available in debug builds"
+ << " on systems with Graphviz or gv!\n";
+ return std::string();
+#endif
+}
+
+/// setGraphColor - Convenience for setting node color attribute.
+///
+void SelectionDAG::setGraphColor(const SDNode *N, const char *Color) {
+#ifndef NDEBUG
+ NodeGraphAttrs[N] = std::string("color=") + Color;
+#else
+ errs() << "SelectionDAG::setGraphColor is only available in debug builds"
+ << " on systems with Graphviz or gv!\n";
+#endif
+}
+
+/// setSubgraphColorHelper - Implement setSubgraphColor. Return
+/// whether we truncated the search.
+///
+bool SelectionDAG::setSubgraphColorHelper(SDNode *N, const char *Color, DenseSet<SDNode *> &visited,
+ int level, bool &printed) {
+ bool hit_limit = false;
+
+#ifndef NDEBUG
+ if (level >= 20) {
+ if (!printed) {
+ printed = true;
+ DEBUG(dbgs() << "setSubgraphColor hit max level\n");
}
+ return true;
}
- if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(Node)) {
- Op += ": " + utostr(CSDN->getValue());
- } else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(Node)) {
- Op += ": " + ftostr(CSDN->getValue());
- } else if (const GlobalAddressSDNode *GADN =
- dyn_cast<GlobalAddressSDNode>(Node)) {
- Op += ": " + GADN->getGlobal()->getName();
- } else if (const FrameIndexSDNode *FIDN =
- dyn_cast<FrameIndexSDNode>(Node)) {
- Op += " " + itostr(FIDN->getIndex());
- } else if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Node)){
- Op += "<" + utostr(CP->getIndex()) + ">";
- } else if (const BasicBlockSDNode *BBDN =
- dyn_cast<BasicBlockSDNode>(Node)) {
- Op = "BB: ";
- const Value *LBB = (const Value*)BBDN->getBasicBlock()->getBasicBlock();
- if (LBB)
- Op += LBB->getName();
- //Op += " " + (const void*)BBDN->getBasicBlock();
- } else if (const RegSDNode *C2V = dyn_cast<RegSDNode>(Node)) {
- Op += " #" + utostr(C2V->getReg());
- } else if (const ExternalSymbolSDNode *ES =
- dyn_cast<ExternalSymbolSDNode>(Node)) {
- Op += "'" + std::string(ES->getSymbol()) + "'";
- } else if (const MVTSDNode *M = dyn_cast<MVTSDNode>(Node)) {
- Op = Op + "ty=" + MVT::getValueTypeString(M->getExtraValueType());
+ unsigned oldSize = visited.size();
+ visited.insert(N);
+ if (visited.size() != oldSize) {
+ setGraphColor(N, Color);
+ for(SDNodeIterator i = SDNodeIterator::begin(N), iend = SDNodeIterator::end(N);
+ i != iend;
+ ++i) {
+ hit_limit = setSubgraphColorHelper(*i, Color, visited, level+1, printed) || hit_limit;
+ }
}
- return Op;
+#else
+ errs() << "SelectionDAG::setSubgraphColor is only available in debug builds"
+ << " on systems with Graphviz or gv!\n";
+#endif
+ return hit_limit;
}
-
-/// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
-/// rendered using 'dot'.
+/// setSubgraphColor - Convenience for setting subgraph color attribute.
///
-void SelectionDAG::viewGraph() {
- std::string Filename = "/tmp/dag." +
- getMachineFunction().getFunction()->getName() + ".dot";
- std::cerr << "Writing '" << Filename << "'... ";
- std::ofstream F(Filename.c_str());
-
- if (!F) {
- std::cerr << " error opening file for writing!\n";
- return;
+void SelectionDAG::setSubgraphColor(SDNode *N, const char *Color) {
+#ifndef NDEBUG
+ DenseSet<SDNode *> visited;
+ bool printed = false;
+ if (setSubgraphColorHelper(N, Color, visited, 0, printed)) {
+ // Visually mark that we hit the limit
+ if (strcmp(Color, "red") == 0) {
+ setSubgraphColorHelper(N, "blue", visited, 0, printed);
+ } else if (strcmp(Color, "yellow") == 0) {
+ setSubgraphColorHelper(N, "green", visited, 0, printed);
+ }
}
- WriteGraph(F, this);
- F.close();
- std::cerr << "\n";
+#else
+ errs() << "SelectionDAG::setSubgraphColor is only available in debug builds"
+ << " on systems with Graphviz or gv!\n";
+#endif
+}
- std::cerr << "Running 'dot' program... " << std::flush;
- if (system(("dot -Tps -Nfontname=Courier -Gsize=7.5,10 " + Filename
- + " > /tmp/dag.tempgraph.ps").c_str())) {
- std::cerr << "Error running dot: 'dot' not in path?\n";
+std::string ScheduleDAGSDNodes::getGraphNodeLabel(const SUnit *SU) const {
+ std::string s;
+ raw_string_ostream O(s);
+ O << "SU(" << SU->NodeNum << "): ";
+ if (SU->getNode()) {
+ SmallVector<SDNode *, 4> GluedNodes;
+ for (SDNode *N = SU->getNode(); N; N = N->getGluedNode())
+ GluedNodes.push_back(N);
+ while (!GluedNodes.empty()) {
+ O << DOTGraphTraits<SelectionDAG*>
+ ::getSimpleNodeLabel(GluedNodes.back(), DAG);
+ GluedNodes.pop_back();
+ if (!GluedNodes.empty())
+ O << "\n ";
+ }
} else {
- std::cerr << "\n";
- system("gv /tmp/dag.tempgraph.ps");
+ O << "CROSS RC COPY";
+ }
+ return O.str();
+}
+
+void ScheduleDAGSDNodes::getCustomGraphFeatures(GraphWriter<ScheduleDAG*> &GW) const {
+ if (DAG) {
+ // Draw a special "GraphRoot" node to indicate the root of the graph.
+ GW.emitSimpleNode(nullptr, "plaintext=circle", "GraphRoot");
+ const SDNode *N = DAG->getRoot().getNode();
+ if (N && N->getNodeId() != -1)
+ GW.emitEdge(nullptr, -1, &SUnits[N->getNodeId()], -1,
+ "color=blue,style=dashed");
}
- system(("rm " + Filename + " /tmp/dag.tempgraph.ps").c_str());
}
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