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llvm-6502/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 "llvm/Constants.h"
#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/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/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(1 << 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)) {
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() + ">";
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 (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=" + 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
}
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
}
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