//
// 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.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/Function.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/SelectionDAG.h"
+#include "llvm/CodeGen/ScheduleDAG.h"
+#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/Target/MRegisterInfo.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/CodeGen/PseudoSourceValue.h"
+#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetMachine.h"
+#include "llvm/Support/Debug.h"
#include "llvm/Support/GraphWriter.h"
-#include "llvm/System/Path.h"
-#include "llvm/System/Program.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Config/config.h"
#include <fstream>
-#include <sstream>
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();
}
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) {
+ 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, "");
+ if (G->getRoot().getNode())
+ GW.emitEdge(0, -1, G->getRoot().getNode(), G->getRoot().getResNo(),
+ "color=blue,style=dashed");
}
};
}
const SelectionDAG *G) {
std::string Op = Node->getOperationName(G);
- for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i)
- if (Node->getValueType(i) == MVT::Other)
- Op += ":ch";
- else
- Op = Op + ":" + MVT::getValueTypeString(Node->getValueType(i));
-
if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(Node)) {
- Op += ": " + utostr(CSDN->getValue());
+ Op += ": " + utostr(CSDN->getZExtValue());
} else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(Node)) {
- Op += ": " + ftostr(CSDN->getValue());
+ Op += ": " + ftostr(CSDN->getValueAPF());
} else if (const GlobalAddressSDNode *GADN =
dyn_cast<GlobalAddressSDNode>(Node)) {
- int offset = GADN->getOffset();
Op += ": " + GADN->getGlobal()->getName();
- if (offset > 0)
- Op += "+" + itostr(offset);
- else
- Op += itostr(offset);
+ 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 (ConstantFP *CFP = dyn_cast<ConstantFP>(CP->get()))
- Op += "<" + ftostr(CFP->getValue()) + ">";
- else if (ConstantInt *CI = dyn_cast<ConstantInt>(CP->get()))
- Op += "<" + utostr(CI->getZExtValue()) + ">";
- else {
- std::ostringstream SS;
- WriteAsOperand(SS, CP->get(), false);
- Op += "<" + SS.str() + ">";
+ 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(1 << CP->getAlignment());
} else if (const BasicBlockSDNode *BBDN = dyn_cast<BasicBlockSDNode>(Node)) {
Op = "BB: ";
const Value *LBB = (const Value*)BBDN->getBasicBlock()->getBasicBlock();
Op += LBB->getName();
//Op += " " + (const void*)BBDN->getBasicBlock();
} else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(Node)) {
- if (G && R->getReg() != 0 && MRegisterInfo::isPhysicalRegister(R->getReg())) {
- Op = Op + " " + G->getTarget().getRegisterInfo()->getName(R->getReg());
+ 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)) {
+ Op += ": " + D->getCompileUnit()->getFileName();
+ 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() + ":" + itostr(M->getOffset()) + ">";
+ Op += "<" + M->getValue()->getName() + ">";
else
- Op += "<null:" + itostr(M->getOffset()) + ">";
+ Op += "<null>";
+ } else if (const MemOperandSDNode *M = dyn_cast<MemOperandSDNode>(Node)) {
+ const Value *V = M->MO.getValue();
+ Op += '<';
+ if (!V) {
+ Op += "(unknown)";
+ } else if (isa<PseudoSourceValue>(V)) {
+ // PseudoSourceValues don't have names, so use their print method.
+ {
+ raw_string_ostream OSS(Op);
+ OSS << *M->MO.getValue();
+ }
+ } 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=" + getValueTypeString(N->getVT());
- } else if (const StringSDNode *N = dyn_cast<StringSDNode>(Node)) {
- Op = Op + "\"" + N->getValue() + "\"";
+ 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() {
+void SelectionDAG::viewGraph(const std::string &Title) {
// This code is only for debugging!
#ifndef NDEBUG
- char pathsuff[9];
+ 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
+}
- sprintf(pathsuff, "%06u", unsigned(rand()));
+// 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("");
+}
- sys::Path TempDir = sys::Path::GetTemporaryDirectory();
- sys::Path Filename = TempDir;
- Filename.appendComponent("dag." + getMachineFunction().getFunction()->getName() + "." + pathsuff + ".dot");
- std::cerr << "Writing '" << Filename.toString() << "'... ";
- std::ofstream F(Filename.toString().c_str());
+/// 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
+}
- if (!F) {
- std::cerr << " error opening file for writing!\n";
- return;
- }
- WriteGraph(F, this);
- F.close();
- std::cerr << "\n";
+/// 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
+}
-#if HAVE_GRAPHVIZ
- sys::Path Graphviz(LLVM_PATH_GRAPHVIZ);
- std::vector<const char*> args;
- args.push_back(Graphviz.c_str());
- args.push_back(Filename.c_str());
- args.push_back(0);
-
- std::cerr << "Running 'Graphviz' program... " << std::flush;
- if (sys::Program::ExecuteAndWait(Graphviz, &args[0])) {
- std::cerr << "Error viewing graph: 'Graphviz' not in path?\n";
- } else {
- Filename.eraseFromDisk();
- return;
- }
-#elif (HAVE_GV && HAVE_DOT)
- sys::Path PSFilename = TempDir;
- PSFilename.appendComponent(std::string("dag.tempgraph") + "." + pathsuff + ".ps");
-
- sys::Path dot(LLVM_PATH_DOT);
- std::vector<const char*> args;
- args.push_back(dot.c_str());
- args.push_back("-Tps");
- args.push_back("-Nfontname=Courier");
- args.push_back("-Gsize=7.5,10");
- args.push_back(Filename.c_str());
- args.push_back("-o");
- args.push_back(PSFilename.c_str());
- args.push_back(0);
-
- std::cerr << "Running 'dot' program... " << std::flush;
- if (sys::Program::ExecuteAndWait(dot, &args[0])) {
- std::cerr << "Error viewing graph: 'dot' not in path?\n";
- } else {
- std::cerr << "\n";
-
- sys::Path gv(LLVM_PATH_GV);
- args.clear();
- args.push_back(gv.c_str());
- args.push_back(PSFilename.c_str());
- args.push_back(0);
+
+/// 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);
- sys::Program::ExecuteAndWait(gv, &args[0]);
- }
- Filename.eraseFromDisk();
- PSFilename.eraseFromDisk();
- return;
-#elif HAVE_DOTTY
- sys::Path dotty(LLVM_PATH_DOTTY);
- std::vector<const char*> args;
- args.push_back(dotty.c_str());
- args.push_back(Filename.c_str());
- args.push_back(0);
-
- std::cerr << "Running 'dotty' program... " << std::flush;
- if (sys::Program::ExecuteAndWait(dotty, &args[0])) {
- std::cerr << "Error viewing graph: 'dotty' not in path?\n";
- } else {
-#ifndef __MINGW32__ // Dotty spawns another app and doesn't wait until it returns
- Filename.eraseFromDisk();
+ 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
- return;
+}
+
+/// 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
-
-#endif // NDEBUG
- std::cerr << "SelectionDAG::viewGraph is only available in debug builds on "
- << "systems with Graphviz or gv!\n";
+ return hit_limit;
+}
+/// setSubgraphColor - Convenience for setting subgraph color attribute.
+///
+void SelectionDAG::setSubgraphColor(SDNode *N, const char *Color) {
#ifndef NDEBUG
- Filename.eraseFromDisk();
- TempDir.eraseFromDisk(true);
+ 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
}
+
+namespace llvm {
+ template<>
+ struct DOTGraphTraits<ScheduleDAG*> : public DefaultDOTGraphTraits {
+ static std::string getGraphName(const ScheduleDAG *G) {
+ return DOTGraphTraits<SelectionDAG*>::getGraphName(&G->DAG);
+ }
+
+ static bool renderGraphFromBottomUp() {
+ return true;
+ }
+
+ static bool hasNodeAddressLabel(const SUnit *Node,
+ const ScheduleDAG *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) {
+ if (EI.isSpecialDep())
+ return "color=cyan,style=dashed";
+ if (EI.isCtrlDep())
+ return "color=blue,style=dashed";
+ return "";
+ }
+
+
+ static std::string getNodeLabel(const SUnit *Node,
+ const ScheduleDAG *Graph);
+ static std::string getNodeAttributes(const SUnit *N,
+ const ScheduleDAG *Graph) {
+ return "shape=Mrecord";
+ }
+
+ static void addCustomGraphFeatures(ScheduleDAG *G,
+ GraphWriter<ScheduleDAG*> &GW) {
+ GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
+ const SDNode *N = G->DAG.getRoot().getNode();
+ if (N && N->getNodeId() != -1)
+ GW.emitEdge(0, -1, &G->SUnits[N->getNodeId()], -1,
+ "color=blue,style=dashed");
+ }
+ };
+}
+
+std::string DOTGraphTraits<ScheduleDAG*>::getNodeLabel(const SUnit *SU,
+ const ScheduleDAG *G) {
+ std::string Op;
+
+ for (unsigned i = 0; i < SU->FlaggedNodes.size(); ++i) {
+ Op += DOTGraphTraits<SelectionDAG*>::getNodeLabel(SU->FlaggedNodes[i],
+ &G->DAG) + "\n";
+ }
+
+ if (SU->Node)
+ Op += DOTGraphTraits<SelectionDAG*>::getNodeLabel(SU->Node, &G->DAG);
+ else
+ Op += "<CROSS RC COPY>";
+
+ return Op;
+}
+
+
+/// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
+/// rendered using 'dot'.
+///
+void ScheduleDAG::viewGraph() {
+// This code is only for debugging!
+#ifndef NDEBUG
+ ViewGraph(this, "dag." + MF->getFunction()->getName(),
+ "Scheduling-Units Graph for " + MF->getFunction()->getName() + ':' +
+ BB->getBasicBlock()->getName());
+#else
+ cerr << "ScheduleDAG::viewGraph is only available in debug builds on "
+ << "systems with Graphviz or gv!\n";
+#endif // NDEBUG
+}