1 //===-- SelectionDAGPrinter.cpp - Implement SelectionDAG::viewGraph() -----===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This implements the SelectionDAG::viewGraph method.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/Constants.h"
15 #include "llvm/Function.h"
16 #include "llvm/Assembly/Writer.h"
17 #include "llvm/CodeGen/SelectionDAG.h"
18 #include "llvm/CodeGen/ScheduleDAG.h"
19 #include "llvm/CodeGen/MachineConstantPool.h"
20 #include "llvm/CodeGen/MachineFunction.h"
21 #include "llvm/Target/MRegisterInfo.h"
22 #include "llvm/Target/TargetMachine.h"
23 #include "llvm/Support/GraphWriter.h"
24 #include "llvm/ADT/StringExtras.h"
25 #include "llvm/Config/config.h"
32 struct DOTGraphTraits<SelectionDAG*> : public DefaultDOTGraphTraits {
33 static std::string getGraphName(const SelectionDAG *G) {
34 return G->getMachineFunction().getFunction()->getName();
37 static bool renderGraphFromBottomUp() {
41 static bool hasNodeAddressLabel(const SDNode *Node,
42 const SelectionDAG *Graph) {
46 /// If you want to override the dot attributes printed for a particular
47 /// edge, override this method.
48 template<typename EdgeIter>
49 static std::string getEdgeAttributes(const void *Node, EdgeIter EI) {
50 SDOperand Op = EI.getNode()->getOperand(EI.getOperand());
51 MVT::ValueType VT = Op.getValueType();
53 return "color=red,style=bold";
54 else if (VT == MVT::Other)
55 return "color=blue,style=dashed";
60 static std::string getNodeLabel(const SDNode *Node,
61 const SelectionDAG *Graph);
62 static std::string getNodeAttributes(const SDNode *N,
63 const SelectionDAG *Graph) {
65 const std::string &Attrs = Graph->getGraphAttrs(N);
67 if (Attrs.find("shape=") == std::string::npos)
68 return std::string("shape=Mrecord,") + Attrs;
73 return "shape=Mrecord";
76 static void addCustomGraphFeatures(SelectionDAG *G,
77 GraphWriter<SelectionDAG*> &GW) {
78 GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
80 GW.emitEdge(0, -1, G->getRoot().Val, -1, "");
85 std::string DOTGraphTraits<SelectionDAG*>::getNodeLabel(const SDNode *Node,
86 const SelectionDAG *G) {
87 std::string Op = Node->getOperationName(G);
89 for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i)
90 if (Node->getValueType(i) == MVT::Other)
93 Op = Op + ":" + MVT::getValueTypeString(Node->getValueType(i));
95 if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(Node)) {
96 Op += ": " + utostr(CSDN->getValue());
97 } else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(Node)) {
98 Op += ": " + ftostr(CSDN->getValueAPF());
99 } else if (const GlobalAddressSDNode *GADN =
100 dyn_cast<GlobalAddressSDNode>(Node)) {
101 int offset = GADN->getOffset();
102 Op += ": " + GADN->getGlobal()->getName();
104 Op += "+" + itostr(offset);
106 Op += itostr(offset);
107 } else if (const FrameIndexSDNode *FIDN = dyn_cast<FrameIndexSDNode>(Node)) {
108 Op += " " + itostr(FIDN->getIndex());
109 } else if (const JumpTableSDNode *JTDN = dyn_cast<JumpTableSDNode>(Node)) {
110 Op += " " + itostr(JTDN->getIndex());
111 } else if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Node)){
112 if (CP->isMachineConstantPoolEntry()) {
113 std::ostringstream SS;
114 CP->getMachineCPVal()->print(SS);
115 Op += "<" + SS.str() + ">";
117 if (ConstantFP *CFP = dyn_cast<ConstantFP>(CP->getConstVal()))
118 Op += "<" + ftostr(CFP->getValueAPF()) + ">";
119 else if (ConstantInt *CI = dyn_cast<ConstantInt>(CP->getConstVal()))
120 Op += "<" + utostr(CI->getZExtValue()) + ">";
122 std::ostringstream SS;
123 WriteAsOperand(SS, CP->getConstVal(), false);
124 Op += "<" + SS.str() + ">";
127 } else if (const BasicBlockSDNode *BBDN = dyn_cast<BasicBlockSDNode>(Node)) {
129 const Value *LBB = (const Value*)BBDN->getBasicBlock()->getBasicBlock();
131 Op += LBB->getName();
132 //Op += " " + (const void*)BBDN->getBasicBlock();
133 } else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(Node)) {
134 if (G && R->getReg() != 0 &&
135 MRegisterInfo::isPhysicalRegister(R->getReg())) {
136 Op = Op + " " + G->getTarget().getRegisterInfo()->getName(R->getReg());
138 Op += " #" + utostr(R->getReg());
140 } else if (const ExternalSymbolSDNode *ES =
141 dyn_cast<ExternalSymbolSDNode>(Node)) {
142 Op += "'" + std::string(ES->getSymbol()) + "'";
143 } else if (const SrcValueSDNode *M = dyn_cast<SrcValueSDNode>(Node)) {
145 Op += "<" + M->getValue()->getName() + ":" + itostr(M->getOffset()) + ">";
147 Op += "<null:" + itostr(M->getOffset()) + ">";
148 } else if (const VTSDNode *N = dyn_cast<VTSDNode>(Node)) {
149 Op = Op + " VT=" + MVT::getValueTypeString(N->getVT());
150 } else if (const StringSDNode *N = dyn_cast<StringSDNode>(Node)) {
151 Op = Op + "\"" + N->getValue() + "\"";
152 } else if (const LoadSDNode *LD = dyn_cast<LoadSDNode>(Node)) {
154 switch (LD->getExtensionType()) {
155 default: doExt = false; break;
157 Op = Op + "<anyext ";
167 Op += MVT::getValueTypeString(LD->getLoadedVT()) + ">";
168 if (LD->isVolatile())
170 Op += LD->getIndexedModeName(LD->getAddressingMode());
171 if (LD->getAlignment() > 1)
172 Op += " A=" + utostr(LD->getAlignment());
173 } else if (const StoreSDNode *ST = dyn_cast<StoreSDNode>(Node)) {
174 if (ST->isTruncatingStore())
175 Op += "<trunc " + MVT::getValueTypeString(ST->getStoredVT()) + ">";
176 if (ST->isVolatile())
178 Op += ST->getIndexedModeName(ST->getAddressingMode());
179 if (ST->getAlignment() > 1)
180 Op += " A=" + utostr(ST->getAlignment());
184 Op += " Id=" + itostr(Node->getNodeId());
191 /// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
192 /// rendered using 'dot'.
194 void SelectionDAG::viewGraph() {
195 // This code is only for debugging!
197 ViewGraph(this, "dag." + getMachineFunction().getFunction()->getName());
199 cerr << "SelectionDAG::viewGraph is only available in debug builds on "
200 << "systems with Graphviz or gv!\n";
205 /// clearGraphAttrs - Clear all previously defined node graph attributes.
206 /// Intended to be used from a debugging tool (eg. gdb).
207 void SelectionDAG::clearGraphAttrs() {
209 NodeGraphAttrs.clear();
211 cerr << "SelectionDAG::clearGraphAttrs is only available in debug builds"
212 << " on systems with Graphviz or gv!\n";
217 /// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".)
219 void SelectionDAG::setGraphAttrs(const SDNode *N, const char *Attrs) {
221 NodeGraphAttrs[N] = Attrs;
223 cerr << "SelectionDAG::setGraphAttrs is only available in debug builds"
224 << " on systems with Graphviz or gv!\n";
229 /// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".)
230 /// Used from getNodeAttributes.
231 const std::string SelectionDAG::getGraphAttrs(const SDNode *N) const {
233 std::map<const SDNode *, std::string>::const_iterator I =
234 NodeGraphAttrs.find(N);
236 if (I != NodeGraphAttrs.end())
241 cerr << "SelectionDAG::getGraphAttrs is only available in debug builds"
242 << " on systems with Graphviz or gv!\n";
243 return std::string("");
247 /// setGraphColor - Convenience for setting node color attribute.
249 void SelectionDAG::setGraphColor(const SDNode *N, const char *Color) {
251 NodeGraphAttrs[N] = std::string("color=") + Color;
253 cerr << "SelectionDAG::setGraphColor is only available in debug builds"
254 << " on systems with Graphviz or gv!\n";
260 struct DOTGraphTraits<ScheduleDAG*> : public DefaultDOTGraphTraits {
261 static std::string getGraphName(const ScheduleDAG *G) {
262 return DOTGraphTraits<SelectionDAG*>::getGraphName(&G->DAG);
265 static bool renderGraphFromBottomUp() {
269 static bool hasNodeAddressLabel(const SUnit *Node,
270 const ScheduleDAG *Graph) {
274 /// If you want to override the dot attributes printed for a particular
275 /// edge, override this method.
276 template<typename EdgeIter>
277 static std::string getEdgeAttributes(const void *Node, EdgeIter EI) {
279 return "color=blue,style=dashed";
284 static std::string getNodeLabel(const SUnit *Node,
285 const ScheduleDAG *Graph);
286 static std::string getNodeAttributes(const SUnit *N,
287 const ScheduleDAG *Graph) {
288 return "shape=Mrecord";
291 static void addCustomGraphFeatures(ScheduleDAG *G,
292 GraphWriter<ScheduleDAG*> &GW) {
293 GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
294 if (G->DAG.getRoot().Val)
295 GW.emitEdge(0, -1, G->SUnitMap[G->DAG.getRoot().Val].front(), -1, "");
300 std::string DOTGraphTraits<ScheduleDAG*>::getNodeLabel(const SUnit *SU,
301 const ScheduleDAG *G) {
304 for (unsigned i = 0; i < SU->FlaggedNodes.size(); ++i) {
305 Op += DOTGraphTraits<SelectionDAG*>::getNodeLabel(SU->FlaggedNodes[i],
309 Op += DOTGraphTraits<SelectionDAG*>::getNodeLabel(SU->Node, &G->DAG);
315 /// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
316 /// rendered using 'dot'.
318 void ScheduleDAG::viewGraph() {
319 // This code is only for debugging!
321 ViewGraph(this, "dag." + DAG.getMachineFunction().getFunction()->getName());
323 cerr << "ScheduleDAG::viewGraph is only available in debug builds on "
324 << "systems with Graphviz or gv!\n";