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126 lines
4.3 KiB
C++
126 lines
4.3 KiB
C++
//===-- SelectionDAGPrinter.cpp - Implement SelectionDAG::viewGraph() -----===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This implements the SelectionDAG::viewGraph method.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/SelectionDAG.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/Function.h"
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#include "llvm/Support/GraphWriter.h"
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#include "llvm/ADT/StringExtras.h"
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#include <fstream>
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using namespace llvm;
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namespace llvm {
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template<>
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struct DOTGraphTraits<SelectionDAG*> : public DefaultDOTGraphTraits {
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static std::string getGraphName(const SelectionDAG *G) {
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return G->getMachineFunction().getFunction()->getName();
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}
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static bool renderGraphFromBottomUp() {
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return true;
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}
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static std::string getNodeLabel(const SDNode *Node,
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const SelectionDAG *Graph);
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static std::string getNodeAttributes(const SDNode *N) {
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return "shape=Mrecord";
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}
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static void addCustomGraphFeatures(SelectionDAG *G,
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GraphWriter<SelectionDAG*> &GW) {
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GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
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GW.emitEdge(0, -1, G->getRoot().Val, -1, "");
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}
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};
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}
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std::string DOTGraphTraits<SelectionDAG*>::getNodeLabel(const SDNode *Node,
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const SelectionDAG *G) {
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std::string Op = Node->getOperationName();
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for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) {
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switch (Node->getValueType(i)) {
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default: Op += ":unknownvt!"; break;
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case MVT::Other: Op += ":ch"; break;
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case MVT::i1: Op += ":i1"; break;
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case MVT::i8: Op += ":i8"; break;
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case MVT::i16: Op += ":i16"; break;
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case MVT::i32: Op += ":i32"; break;
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case MVT::i64: Op += ":i64"; break;
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case MVT::i128: Op += ":i128"; break;
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case MVT::f32: Op += ":f32"; break;
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case MVT::f64: Op += ":f64"; break;
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case MVT::f80: Op += ":f80"; break;
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case MVT::f128: Op += ":f128"; break;
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case MVT::isVoid: Op += ":void"; break;
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}
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}
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if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(Node)) {
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Op += ": " + utostr(CSDN->getValue());
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} else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(Node)) {
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Op += ": " + ftostr(CSDN->getValue());
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} else if (const GlobalAddressSDNode *GADN =
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dyn_cast<GlobalAddressSDNode>(Node)) {
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Op += ": " + GADN->getGlobal()->getName();
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} else if (const FrameIndexSDNode *FIDN =
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dyn_cast<FrameIndexSDNode>(Node)) {
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Op += " " + itostr(FIDN->getIndex());
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} else if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Node)){
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Op += "<" + utostr(CP->getIndex()) + ">";
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} else if (const BasicBlockSDNode *BBDN =
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dyn_cast<BasicBlockSDNode>(Node)) {
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Op = "BB: ";
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const Value *LBB = (const Value*)BBDN->getBasicBlock()->getBasicBlock();
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if (LBB)
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Op += LBB->getName();
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//Op += " " + (const void*)BBDN->getBasicBlock();
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} else if (const CopyRegSDNode *C2V = dyn_cast<CopyRegSDNode>(Node)) {
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Op += " #" + utostr(C2V->getReg());
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} else if (const ExternalSymbolSDNode *ES =
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dyn_cast<ExternalSymbolSDNode>(Node)) {
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Op += "'" + std::string(ES->getSymbol()) + "'";
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}
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return Op;
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}
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/// viewGraph - Pop up a ghostview window with the reachable parts of the DAG
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/// rendered using 'dot'.
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///
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void SelectionDAG::viewGraph() {
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std::string Filename = "/tmp/dag." +
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getMachineFunction().getFunction()->getName() + ".dot";
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std::cerr << "Writing '" << Filename << "'... ";
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std::ofstream F(Filename.c_str());
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if (!F) {
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std::cerr << " error opening file for writing!\n";
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return;
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}
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WriteGraph(F, this);
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F.close();
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std::cerr << "\n";
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std::cerr << "Running 'dot' program... " << std::flush;
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if (system(("dot -Tps -Nfontname=Courier -Gsize=7.5,10 " + Filename
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+ " > /tmp/dag.tempgraph.ps").c_str())) {
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std::cerr << "Error running dot: 'dot' not in path?\n";
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} else {
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std::cerr << "\n";
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system("gv /tmp/dag.tempgraph.ps");
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}
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system(("rm " + Filename + " /tmp/dag.tempgraph.ps").c_str());
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}
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