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-rw-r--r--lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp416
1 files changed, 416 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
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+++ b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
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+//===-- SelectionDAGPrinter.cpp - Implement SelectionDAG::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 SelectionDAG::viewGraph method.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ScheduleDAGSDNodes.h"
+#include "llvm/Constants.h"
+#include "llvm/Function.h"
+#include "llvm/Assembly/Writer.h"
+#include "llvm/CodeGen/SelectionDAG.h"
+#include "llvm/CodeGen/MachineConstantPool.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/CodeGen/PseudoSourceValue.h"
+#include "llvm/Analysis/DebugInfo.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 "llvm/Config/config.h"
+#include <fstream>
+using namespace llvm;
+
+namespace llvm {
+ template<>
+ struct DOTGraphTraits<SelectionDAG*> : public DefaultDOTGraphTraits {
+ 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).getMVTString();
+ }
+
+ /// 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();
+ }
+
+ static bool renderGraphFromBottomUp() {
+ return true;
+ }
+
+ 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) {
+ SDValue Op = EI.getNode()->getOperand(EI.getOperand());
+ MVT VT = Op.getValueType();
+ if (VT == MVT::Flag)
+ return "color=red,style=bold";
+ else if (VT == MVT::Other)
+ return "color=blue,style=dashed";
+ return "";
+ }
+
+
+ static 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");
+ if (G->getRoot().getNode())
+ GW.emitEdge(0, -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(G);
+
+ if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(Node)) {
+ Op += ": " + utostr(CSDN->getZExtValue());
+ } else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(Node)) {
+ Op += ": " + ftostr(CSDN->getValueAPF());
+ } else if (const GlobalAddressSDNode *GADN =
+ dyn_cast<GlobalAddressSDNode>(Node)) {
+ Op += ": " + GADN->getGlobal()->getName();
+ if (int64_t Offset = GADN->getOffset()) {
+ if (Offset > 0)
+ Op += "+" + itostr(Offset);
+ else
+ Op += itostr(Offset);
+ }
+ } else if (const FrameIndexSDNode *FIDN = dyn_cast<FrameIndexSDNode>(Node)) {
+ Op += " " + itostr(FIDN->getIndex());
+ } else if (const JumpTableSDNode *JTDN = dyn_cast<JumpTableSDNode>(Node)) {
+ Op += " " + itostr(JTDN->getIndex());
+ } else if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Node)){
+ if (CP->isMachineConstantPoolEntry()) {
+ Op += '<';
+ {
+ raw_string_ostream OSS(Op);
+ OSS << *CP->getMachineCPVal();
+ }
+ Op += '>';
+ } else {
+ if (ConstantFP *CFP = dyn_cast<ConstantFP>(CP->getConstVal()))
+ Op += "<" + ftostr(CFP->getValueAPF()) + ">";
+ else if (ConstantInt *CI = dyn_cast<ConstantInt>(CP->getConstVal()))
+ Op += "<" + utostr(CI->getZExtValue()) + ">";
+ else {
+ Op += '<';
+ {
+ raw_string_ostream OSS(Op);
+ WriteAsOperand(OSS, CP->getConstVal(), false);
+ }
+ Op += '>';
+ }
+ }
+ Op += " A=" + itostr(CP->getAlignment());
+ } 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 RegisterSDNode *R = dyn_cast<RegisterSDNode>(Node)) {
+ if (G && R->getReg() != 0 &&
+ TargetRegisterInfo::isPhysicalRegister(R->getReg())) {
+ Op = Op + " " +
+ G->getTarget().getRegisterInfo()->getName(R->getReg());
+ } else {
+ Op += " #" + utostr(R->getReg());
+ }
+ } else if (const DbgStopPointSDNode *D = dyn_cast<DbgStopPointSDNode>(Node)) {
+ DICompileUnit CU(cast<GlobalVariable>(D->getCompileUnit()));
+ std::string FN;
+ Op += ": " + CU.getFilename(FN);
+ Op += ":" + utostr(D->getLine());
+ if (D->getColumn() != 0)
+ Op += ":" + utostr(D->getColumn());
+ } else if (const LabelSDNode *L = dyn_cast<LabelSDNode>(Node)) {
+ Op += ": LabelID=" + utostr(L->getLabelID());
+ } else if (const CallSDNode *C = dyn_cast<CallSDNode>(Node)) {
+ Op += ": CallingConv=" + utostr(C->getCallingConv());
+ if (C->isVarArg())
+ Op += ", isVarArg";
+ if (C->isTailCall())
+ Op += ", isTailCall";
+ } else if (const ExternalSymbolSDNode *ES =
+ dyn_cast<ExternalSymbolSDNode>(Node)) {
+ Op += "'" + std::string(ES->getSymbol()) + "'";
+ } else if (const SrcValueSDNode *M = dyn_cast<SrcValueSDNode>(Node)) {
+ if (M->getValue())
+ Op += "<" + M->getValue()->getName() + ">";
+ else
+ Op += "<null>";
+ } else if (const MemOperandSDNode *M = dyn_cast<MemOperandSDNode>(Node)) {
+ const Value *V = M->MO.getValue();
+ Op += '<';
+ if (!V) {
+ Op += "(unknown)";
+ } else if (const PseudoSourceValue *PSV = dyn_cast<PseudoSourceValue>(V)) {
+ // PseudoSourceValues don't have names, so use their print method.
+ raw_string_ostream OSS(Op);
+ PSV->print(OSS);
+ } else {
+ Op += V->getName();
+ }
+ Op += '+' + itostr(M->MO.getOffset()) + '>';
+ } else if (const ARG_FLAGSSDNode *N = dyn_cast<ARG_FLAGSSDNode>(Node)) {
+ Op = Op + " AF=" + N->getArgFlags().getArgFlagsString();
+ } else if (const VTSDNode *N = dyn_cast<VTSDNode>(Node)) {
+ Op = Op + " VT=" + N->getVT().getMVTString();
+ } else if (const LoadSDNode *LD = dyn_cast<LoadSDNode>(Node)) {
+ bool doExt = true;
+ switch (LD->getExtensionType()) {
+ default: doExt = false; break;
+ case ISD::EXTLOAD:
+ Op = Op + "<anyext ";
+ break;
+ case ISD::SEXTLOAD:
+ Op = Op + " <sext ";
+ break;
+ case ISD::ZEXTLOAD:
+ Op = Op + " <zext ";
+ break;
+ }
+ if (doExt)
+ Op += LD->getMemoryVT().getMVTString() + ">";
+ if (LD->isVolatile())
+ Op += "<V>";
+ Op += LD->getIndexedModeName(LD->getAddressingMode());
+ if (LD->getAlignment() > 1)
+ Op += " A=" + utostr(LD->getAlignment());
+ } else if (const StoreSDNode *ST = dyn_cast<StoreSDNode>(Node)) {
+ if (ST->isTruncatingStore())
+ Op += "<trunc " + ST->getMemoryVT().getMVTString() + ">";
+ if (ST->isVolatile())
+ Op += "<V>";
+ Op += ST->getIndexedModeName(ST->getAddressingMode());
+ if (ST->getAlignment() > 1)
+ Op += " A=" + utostr(ST->getAlignment());
+ }
+
+#if 0
+ Op += " Id=" + itostr(Node->getNodeId());
+#endif
+
+ return Op;
+}
+
+
+/// 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().getFunction()->getName(),
+ Title);
+#else
+ cerr << "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
+ cerr << "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
+ cerr << "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
+ cerr << "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
+ cerr << "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;
+ DOUT << "setSubgraphColor hit max level\n";
+ }
+ return true;
+ }
+
+ 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;
+ }
+ }
+#else
+ cerr << "SelectionDAG::setSubgraphColor is only available in debug builds"
+ << " on systems with Graphviz or gv!\n";
+#endif
+ return hit_limit;
+}
+
+/// setSubgraphColor - Convenience for setting subgraph color attribute.
+///
+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);
+ }
+ }
+
+#else
+ cerr << "SelectionDAG::setSubgraphColor is only available in debug builds"
+ << " on systems with Graphviz or gv!\n";
+#endif
+}
+
+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> FlaggedNodes;
+ for (SDNode *N = SU->getNode(); N; N = N->getFlaggedNode())
+ FlaggedNodes.push_back(N);
+ while (!FlaggedNodes.empty()) {
+ O << DOTGraphTraits<SelectionDAG*>::getNodeLabel(FlaggedNodes.back(), DAG);
+ FlaggedNodes.pop_back();
+ if (!FlaggedNodes.empty())
+ O << "\n ";
+ }
+ } else {
+ 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(0, "plaintext=circle", "GraphRoot");
+ const SDNode *N = DAG->getRoot().getNode();
+ if (N && N->getNodeId() != -1)
+ GW.emitEdge(0, -1, &SUnits[N->getNodeId()], -1,
+ "color=blue,style=dashed");
+ }
+}
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