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/CodeGen/MachineDebugInfoDesc.h"
22 #include "llvm/Target/TargetRegisterInfo.h"
23 #include "llvm/Target/TargetMachine.h"
24 #include "llvm/Support/GraphWriter.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/Config/config.h"
33 struct DOTGraphTraits<SelectionDAG*> : public DefaultDOTGraphTraits {
34 static std::string getGraphName(const SelectionDAG *G) {
35 return G->getMachineFunction().getFunction()->getName();
38 static bool renderGraphFromBottomUp() {
42 static bool hasNodeAddressLabel(const SDNode *Node,
43 const SelectionDAG *Graph) {
47 /// If you want to override the dot attributes printed for a particular
48 /// edge, override this method.
49 template<typename EdgeIter>
50 static std::string getEdgeAttributes(const void *Node, EdgeIter EI) {
51 SDOperand Op = EI.getNode()->getOperand(EI.getOperand());
52 MVT VT = Op.getValueType();
54 return "color=red,style=bold";
55 else if (VT == MVT::Other)
56 return "color=blue,style=dashed";
61 static std::string getNodeLabel(const SDNode *Node,
62 const SelectionDAG *Graph);
63 static std::string getNodeAttributes(const SDNode *N,
64 const SelectionDAG *Graph) {
66 const std::string &Attrs = Graph->getGraphAttrs(N);
68 if (Attrs.find("shape=") == std::string::npos)
69 return std::string("shape=Mrecord,") + Attrs;
74 return "shape=Mrecord";
77 static void addCustomGraphFeatures(SelectionDAG *G,
78 GraphWriter<SelectionDAG*> &GW) {
79 GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
81 GW.emitEdge(0, -1, G->getRoot().Val, -1, "");
86 std::string DOTGraphTraits<SelectionDAG*>::getNodeLabel(const SDNode *Node,
87 const SelectionDAG *G) {
88 std::string Op = Node->getOperationName(G);
90 for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i)
91 if (Node->getValueType(i) == MVT::Other)
94 Op = Op + ":" + Node->getValueType(i).getMVTString();
96 if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(Node)) {
97 Op += ": " + utostr(CSDN->getValue());
98 } else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(Node)) {
99 Op += ": " + ftostr(CSDN->getValueAPF());
100 } else if (const GlobalAddressSDNode *GADN =
101 dyn_cast<GlobalAddressSDNode>(Node)) {
102 int offset = GADN->getOffset();
103 Op += ": " + GADN->getGlobal()->getName();
105 Op += "+" + itostr(offset);
107 Op += itostr(offset);
108 } else if (const FrameIndexSDNode *FIDN = dyn_cast<FrameIndexSDNode>(Node)) {
109 Op += " " + itostr(FIDN->getIndex());
110 } else if (const JumpTableSDNode *JTDN = dyn_cast<JumpTableSDNode>(Node)) {
111 Op += " " + itostr(JTDN->getIndex());
112 } else if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Node)){
113 if (CP->isMachineConstantPoolEntry()) {
114 std::ostringstream SS;
115 CP->getMachineCPVal()->print(SS);
116 Op += "<" + SS.str() + ">";
118 if (ConstantFP *CFP = dyn_cast<ConstantFP>(CP->getConstVal()))
119 Op += "<" + ftostr(CFP->getValueAPF()) + ">";
120 else if (ConstantInt *CI = dyn_cast<ConstantInt>(CP->getConstVal()))
121 Op += "<" + utostr(CI->getZExtValue()) + ">";
123 std::ostringstream SS;
124 WriteAsOperand(SS, CP->getConstVal(), false);
125 Op += "<" + SS.str() + ">";
128 } else if (const BasicBlockSDNode *BBDN = dyn_cast<BasicBlockSDNode>(Node)) {
130 const Value *LBB = (const Value*)BBDN->getBasicBlock()->getBasicBlock();
132 Op += LBB->getName();
133 //Op += " " + (const void*)BBDN->getBasicBlock();
134 } else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(Node)) {
135 if (G && R->getReg() != 0 &&
136 TargetRegisterInfo::isPhysicalRegister(R->getReg())) {
138 G->getTarget().getRegisterInfo()->getName(R->getReg());
140 Op += " #" + utostr(R->getReg());
142 } else if (const DbgStopPointSDNode *D = dyn_cast<DbgStopPointSDNode>(Node)) {
143 Op += ": " + D->getCompileUnit()->getFileName();
144 Op += ":" + utostr(D->getLine());
145 if (D->getColumn() != 0)
146 Op += ":" + utostr(D->getColumn());
147 } else if (const LabelSDNode *L = dyn_cast<LabelSDNode>(Node)) {
148 Op += ": LabelID=" + utostr(L->getLabelID());
149 } else if (const ExternalSymbolSDNode *ES =
150 dyn_cast<ExternalSymbolSDNode>(Node)) {
151 Op += "'" + std::string(ES->getSymbol()) + "'";
152 } else if (const SrcValueSDNode *M = dyn_cast<SrcValueSDNode>(Node)) {
154 Op += "<" + M->getValue()->getName() + ">";
157 } else if (const MemOperandSDNode *M = dyn_cast<MemOperandSDNode>(Node)) {
158 if (M->MO.getValue())
159 Op += "<" + M->MO.getValue()->getName() + ":" + itostr(M->MO.getOffset()) + ">";
161 Op += "<null:" + itostr(M->MO.getOffset()) + ">";
162 } else if (const ARG_FLAGSSDNode *N = dyn_cast<ARG_FLAGSSDNode>(Node)) {
163 Op = Op + " AF=" + N->getArgFlags().getArgFlagsString();
164 } else if (const VTSDNode *N = dyn_cast<VTSDNode>(Node)) {
165 Op = Op + " VT=" + N->getVT().getMVTString();
166 } else if (const LoadSDNode *LD = dyn_cast<LoadSDNode>(Node)) {
168 switch (LD->getExtensionType()) {
169 default: doExt = false; break;
171 Op = Op + "<anyext ";
181 Op += LD->getMemoryVT().getMVTString() + ">";
182 if (LD->isVolatile())
184 Op += LD->getIndexedModeName(LD->getAddressingMode());
185 if (LD->getAlignment() > 1)
186 Op += " A=" + utostr(LD->getAlignment());
187 } else if (const StoreSDNode *ST = dyn_cast<StoreSDNode>(Node)) {
188 if (ST->isTruncatingStore())
189 Op += "<trunc " + ST->getMemoryVT().getMVTString() + ">";
190 if (ST->isVolatile())
192 Op += ST->getIndexedModeName(ST->getAddressingMode());
193 if (ST->getAlignment() > 1)
194 Op += " A=" + utostr(ST->getAlignment());
198 Op += " Id=" + itostr(Node->getNodeId());
205 /// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
206 /// rendered using 'dot'.
208 void SelectionDAG::viewGraph() {
209 // This code is only for debugging!
211 ViewGraph(this, "dag." + getMachineFunction().getFunction()->getName());
213 cerr << "SelectionDAG::viewGraph is only available in debug builds on "
214 << "systems with Graphviz or gv!\n";
219 /// clearGraphAttrs - Clear all previously defined node graph attributes.
220 /// Intended to be used from a debugging tool (eg. gdb).
221 void SelectionDAG::clearGraphAttrs() {
223 NodeGraphAttrs.clear();
225 cerr << "SelectionDAG::clearGraphAttrs is only available in debug builds"
226 << " on systems with Graphviz or gv!\n";
231 /// setGraphAttrs - Set graph attributes for a node. (eg. "color=red".)
233 void SelectionDAG::setGraphAttrs(const SDNode *N, const char *Attrs) {
235 NodeGraphAttrs[N] = Attrs;
237 cerr << "SelectionDAG::setGraphAttrs is only available in debug builds"
238 << " on systems with Graphviz or gv!\n";
243 /// getGraphAttrs - Get graph attributes for a node. (eg. "color=red".)
244 /// Used from getNodeAttributes.
245 const std::string SelectionDAG::getGraphAttrs(const SDNode *N) const {
247 std::map<const SDNode *, std::string>::const_iterator I =
248 NodeGraphAttrs.find(N);
250 if (I != NodeGraphAttrs.end())
255 cerr << "SelectionDAG::getGraphAttrs is only available in debug builds"
256 << " on systems with Graphviz or gv!\n";
257 return std::string("");
261 /// setGraphColor - Convenience for setting node color attribute.
263 void SelectionDAG::setGraphColor(const SDNode *N, const char *Color) {
265 NodeGraphAttrs[N] = std::string("color=") + Color;
267 cerr << "SelectionDAG::setGraphColor is only available in debug builds"
268 << " on systems with Graphviz or gv!\n";
274 struct DOTGraphTraits<ScheduleDAG*> : public DefaultDOTGraphTraits {
275 static std::string getGraphName(const ScheduleDAG *G) {
276 return DOTGraphTraits<SelectionDAG*>::getGraphName(&G->DAG);
279 static bool renderGraphFromBottomUp() {
283 static bool hasNodeAddressLabel(const SUnit *Node,
284 const ScheduleDAG *Graph) {
288 /// If you want to override the dot attributes printed for a particular
289 /// edge, override this method.
290 template<typename EdgeIter>
291 static std::string getEdgeAttributes(const void *Node, EdgeIter EI) {
292 if (EI.isSpecialDep())
293 return "color=cyan,style=dashed";
295 return "color=blue,style=dashed";
300 static std::string getNodeLabel(const SUnit *Node,
301 const ScheduleDAG *Graph);
302 static std::string getNodeAttributes(const SUnit *N,
303 const ScheduleDAG *Graph) {
304 return "shape=Mrecord";
307 static void addCustomGraphFeatures(ScheduleDAG *G,
308 GraphWriter<ScheduleDAG*> &GW) {
309 GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
310 const SDNode *N = G->DAG.getRoot().Val;
311 if (N && N->getNodeId() != -1)
312 GW.emitEdge(0, -1, &G->SUnits[N->getNodeId()], -1, "");
317 std::string DOTGraphTraits<ScheduleDAG*>::getNodeLabel(const SUnit *SU,
318 const ScheduleDAG *G) {
321 for (unsigned i = 0; i < SU->FlaggedNodes.size(); ++i) {
322 Op += DOTGraphTraits<SelectionDAG*>::getNodeLabel(SU->FlaggedNodes[i],
327 Op += DOTGraphTraits<SelectionDAG*>::getNodeLabel(SU->Node, &G->DAG);
329 Op += "<CROSS RC COPY>";
335 /// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
336 /// rendered using 'dot'.
338 void ScheduleDAG::viewGraph() {
339 // This code is only for debugging!
341 ViewGraph(this, "dag." + DAG.getMachineFunction().getFunction()->getName());
343 cerr << "ScheduleDAG::viewGraph is only available in debug builds on "
344 << "systems with Graphviz or gv!\n";