1 //===- Printer.cpp - Code for printing data structure graphs nicely -------===//
3 // This file implements the 'dot' graph printer.
5 //===----------------------------------------------------------------------===//
7 #include "llvm/Analysis/DataStructure.h"
8 #include "llvm/Analysis/DSGraph.h"
9 #include "llvm/Analysis/DSGraphTraits.h"
10 #include "llvm/Module.h"
11 #include "llvm/Assembly/Writer.h"
12 #include "Support/CommandLine.h"
13 #include "Support/GraphWriter.h"
18 // OnlyPrintMain - The DataStructure printer exposes this option to allow
19 // printing of only the graph for "main".
21 static cl::opt<bool> OnlyPrintMain("only-print-main-ds", cl::ReallyHidden);
24 void DSNode::dump() const { print(std::cerr, 0); }
26 static string getCaption(const DSNode *N, const DSGraph *G) {
28 Module *M = G && &G->getFunction() ? G->getFunction().getParent() : 0;
30 for (unsigned i = 0, e = N->getTypeEntries().size(); i != e; ++i) {
31 WriteTypeSymbolic(OS, N->getTypeEntries()[i].Ty, M);
32 if (N->getTypeEntries()[i].Offset)
33 OS << "@" << N->getTypeEntries()[i].Offset;
34 if (N->getTypeEntries()[i].isArray)
39 if (N->NodeType & DSNode::AllocaNode ) OS << "S";
40 if (N->NodeType & DSNode::HeapNode ) OS << "H";
41 if (N->NodeType & DSNode::GlobalNode ) OS << "G";
42 if (N->NodeType & DSNode::UnknownNode) OS << "U";
43 if (N->NodeType & DSNode::Incomplete ) OS << "I";
44 if (N->NodeType & DSNode::Modified ) OS << "M";
45 if (N->NodeType & DSNode::Read ) OS << "R";
47 for (unsigned i = 0, e = N->getGlobals().size(); i != e; ++i) {
48 WriteAsOperand(OS, N->getGlobals()[i], false, true, M);
56 struct DOTGraphTraits<const DSGraph*> : public DefaultDOTGraphTraits {
57 static std::string getGraphName(const DSGraph *G) {
59 return "Function " + G->getFunction().getName();
61 return "Non-function graph";
64 static const char *getGraphProperties(const DSGraph *G) {
65 return "\tedge [arrowtail=\"dot\"];\n"
66 "\tsize=\"10,7.5\";\n"
70 static std::string getNodeLabel(const DSNode *Node, const DSGraph *Graph) {
71 return getCaption(Node, Graph);
74 static std::string getNodeAttributes(const DSNode *N) {
75 return "shape=Mrecord";//fontname=Courier";
78 static int getEdgeSourceLabel(const DSNode *Node, DSNode::iterator I) {
79 assert(Node == I.getNode() && "Iterator not for this node!");
80 return Node->getMergeMapLabel(I.getOffset());
83 /// addCustomGraphFeatures - Use this graph writing hook to emit call nodes
84 /// and the return node.
86 static void addCustomGraphFeatures(const DSGraph *G,
87 GraphWriter<const DSGraph*> &GW) {
88 // Add scalar nodes to the graph...
89 const std::map<Value*, DSNodeHandle> &VM = G->getScalarMap();
90 for (std::map<Value*, DSNodeHandle>::const_iterator I = VM.begin();
92 if (!isa<GlobalValue>(I->first)) {
94 WriteAsOperand(OS, I->first, false, true, G->getFunction().getParent());
95 GW.emitSimpleNode(I->first, "plaintext=circle", OS.str());
97 // Add edge from return node to real destination
98 int EdgeDest = I->second.getOffset();
99 if (EdgeDest == 0) EdgeDest = -1;
100 GW.emitEdge(I->first, -1, I->second.getNode(),
101 EdgeDest, "arrowtail=tee,color=gray63");
105 // Output the returned value pointer...
106 if (G->getRetNode().getNode() != 0) {
107 // Output the return node...
108 GW.emitSimpleNode((void*)1, "plaintext=circle", "returning");
110 // Add edge from return node to real destination
111 int RetEdgeDest = G->getRetNode().getOffset();
112 if (RetEdgeDest == 0) RetEdgeDest = -1;
113 GW.emitEdge((void*)1, -1, G->getRetNode().getNode(),
114 RetEdgeDest, "arrowtail=tee,color=gray63");
117 // Output all of the call nodes...
118 const std::vector<DSCallSite> &FCs = G->getFunctionCalls();
119 for (unsigned i = 0, e = FCs.size(); i != e; ++i) {
120 const DSCallSite &Call = FCs[i];
121 GW.emitSimpleNode(&Call, "shape=record", "call", Call.getNumPtrArgs()+2);
123 if (DSNode *N = Call.getRetVal().getNode()) {
124 int EdgeDest = Call.getRetVal().getOffset();
125 if (EdgeDest == 0) EdgeDest = -1;
126 GW.emitEdge(&Call, 0, N, EdgeDest, "color=gray63");
128 if (DSNode *N = Call.getCallee().getNode()) {
129 int EdgeDest = Call.getCallee().getOffset();
130 if (EdgeDest == 0) EdgeDest = -1;
131 GW.emitEdge(&Call, 1, N, EdgeDest, "color=gray63");
133 for (unsigned j = 0, e = Call.getNumPtrArgs(); j != e; ++j)
134 if (DSNode *N = Call.getPtrArg(j).getNode()) {
135 int EdgeDest = Call.getPtrArg(j).getOffset();
136 if (EdgeDest == 0) EdgeDest = -1;
137 GW.emitEdge(&Call, j+2, N, EdgeDest, "color=gray63");
143 void DSNode::print(std::ostream &O, const DSGraph *G) const {
144 GraphWriter<const DSGraph *> W(O, G);
148 void DSGraph::print(std::ostream &O) const {
149 WriteGraph(O, this, "DataStructures");
152 void DSGraph::writeGraphToFile(std::ostream &O, const string &GraphName) const {
153 string Filename = GraphName + ".dot";
154 O << "Writing '" << Filename << "'...";
155 std::ofstream F(Filename.c_str());
159 O << " [" << getGraphSize() << "+" << getFunctionCalls().size() << "]\n";
161 O << " error opening file for writing!\n";
165 template <typename Collection>
166 static void printCollection(const Collection &C, std::ostream &O,
167 const Module *M, const string &Prefix) {
169 O << "Null Module pointer, cannot continue!\n";
173 for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
174 if (!I->isExternal() && (I->getName() == "main" || !OnlyPrintMain))
175 C.getDSGraph((Function&)*I).writeGraphToFile(O, Prefix+I->getName());
179 // print - Print out the analysis results...
180 void LocalDataStructures::print(std::ostream &O, const Module *M) const {
181 printCollection(*this, O, M, "ds.");
184 void BUDataStructures::print(std::ostream &O, const Module *M) const {
185 printCollection(*this, O, M, "bu.");
187 for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
188 if (!I->isExternal()) {
189 (*getDSGraph(*I).GlobalsGraph)->writeGraphToFile(O, "gg.program");
195 void TDDataStructures::print(std::ostream &O, const Module *M) const {
196 printCollection(*this, O, M, "td.");
198 for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
199 if (!I->isExternal()) {
200 (*getDSGraph(*I).GlobalsGraph)->writeGraphToFile(O, "gg.program");