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New implementation of data structure analysis. Only local analysis has been
implemented so far. llvm-svn: 2871
This commit is contained in:
Chris Lattner
parent
83577a047e
commit
5d62e136c5
@ -1,165 +1,127 @@
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//===- DataStructure.cpp - Analysis for data structure identification -------=//
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//===- DataStructure.cpp - Implement the core data structure analysis -----===//
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//
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// Implement the LLVM data structure analysis library.
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// This file implements the core data structure functionality.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/DataStructure.h"
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#include "llvm/Module.h"
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#include <fstream>
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#include "llvm/DerivedTypes.h"
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#include <algorithm>
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#include "Support/STLExtras.h"
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AnalysisID LocalDataStructures::ID(AnalysisID::create<LocalDataStructures>());
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//===----------------------------------------------------------------------===//
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// DataStructure Class Implementation
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//
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// DSNode Implementation
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//===----------------------------------------------------------------------===//
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AnalysisID DataStructure::ID(AnalysisID::create<DataStructure>());
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DSNode::DSNode(enum NodeTy NT, const Type *T) : Ty(T), NodeType(NT) {
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// If this node has any fields, allocate them now, but leave them null.
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switch (T->getPrimitiveID()) {
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case Type::PointerTyID: Links.resize(1); break;
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case Type::ArrayTyID: Links.resize(1); break;
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case Type::StructTyID:
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Links.resize(cast<StructType>(T)->getNumContainedTypes());
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break;
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default: break;
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}
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}
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void DSNode::removeReferrer(DSNodeHandle *H) {
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// Search backwards, because we depopulate the list from the back for
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// efficiency (because it's a vector).
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std::vector<DSNodeHandle*>::reverse_iterator I =
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std::find(Referrers.rbegin(), Referrers.rend(), H);
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assert(I != Referrers.rend() && "Referrer not pointing to node!");
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Referrers.erase(I.base()-1);
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}
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// addEdgeTo - Add an edge from the current node to the specified node. This
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// can cause merging of nodes in the graph.
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//
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void DSNode::addEdgeTo(unsigned LinkNo, DSNode *N) {
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assert(LinkNo < Links.size() && "LinkNo out of range!");
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if (N == 0 || Links[LinkNo] == N) return; // Nothing to do
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if (Links[LinkNo] == 0) { // No merging to perform
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Links[LinkNo] = N;
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return;
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}
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// Merge the two nodes...
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Links[LinkNo]->mergeWith(N);
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}
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// mergeWith - Merge this node into the specified node, moving all links to and
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// from the argument node into the current node. The specified node may be a
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// null pointer (in which case, nothing happens).
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//
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void DSNode::mergeWith(DSNode *N) {
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if (N == 0 || N == this) return; // Noop
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assert(N->Ty == Ty && N->Links.size() == Links.size() &&
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"Cannot merge nodes of two different types!");
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// Remove all edges pointing at N, causing them to point to 'this' instead.
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while (!N->Referrers.empty())
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*N->Referrers.back() = this;
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// Make all of the outgoing links of N now be outgoing links of this. This
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// can cause recursive merging!
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//
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for (unsigned i = 0, e = Links.size(); i != e; ++i) {
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addEdgeTo(i, N->Links[i]);
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N->Links[i] = 0; // Reduce unneccesary edges in graph. N is dead
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}
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NodeType |= N->NodeType;
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N->NodeType = 0; // N is now a dead node.
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}
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//===----------------------------------------------------------------------===//
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// DSGraph Implementation
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//===----------------------------------------------------------------------===//
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DSGraph::~DSGraph() {
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FunctionCalls.clear();
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ValueMap.clear();
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RetNode = 0;
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#ifndef NDEBUG
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// Drop all intra-node references, so that assertions don't fail...
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std::for_each(Nodes.begin(), Nodes.end(),
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std::mem_fun(&DSNode::dropAllReferences));
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#endif
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// Delete all of the nodes themselves...
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std::for_each(Nodes.begin(), Nodes.end(), deleter<DSNode>);
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}
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//===----------------------------------------------------------------------===//
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// LocalDataStructures Implementation
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//===----------------------------------------------------------------------===//
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// releaseMemory - If the pass pipeline is done with this pass, we can release
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// our memory... here...
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void DataStructure::releaseMemory() {
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for (InfoMap::iterator I = DSInfo.begin(), E = DSInfo.end(); I != E; ++I) {
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delete I->second.first;
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delete I->second.second;
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}
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//
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void LocalDataStructures::releaseMemory() {
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for (std::map<Function*, DSGraph*>::iterator I = DSInfo.begin(),
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E = DSInfo.end(); I != E; ++I)
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delete I->second;
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// Empty map so next time memory is released, data structures are not
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// re-deleted.
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DSInfo.clear();
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}
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// FIXME REMOVE
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#include <sys/time.h>
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#include "Support/CommandLine.h"
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cl::Flag Time("t", "Print analysis time...");
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// print - Print out the analysis results...
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void DataStructure::print(std::ostream &O, Module *M) const {
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if (Time) {
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timeval TV1, TV2;
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gettimeofday(&TV1, 0);
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for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I)
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if (!I->isExternal() && I->getName() == "main") {
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//getDSGraph(*I);
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getClosedDSGraph(I);
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}
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gettimeofday(&TV2, 0);
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std::cerr << "Analysis took "
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<< (TV2.tv_sec-TV1.tv_sec)*1000000+(TV2.tv_usec-TV1.tv_usec)
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<< " microseconds.\n";
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}
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for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I)
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bool LocalDataStructures::run(Module &M) {
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// Calculate all of the graphs...
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for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
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if (!I->isExternal()) {
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std::string Filename = "ds." + I->getName() + ".dot";
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O << "Writing '" << Filename << "'...";
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std::ofstream F(Filename.c_str());
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if (F.good()) {
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F << "digraph DataStructures {\n"
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<< "\tnode [shape=Mrecord];\n"
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<< "\tedge [arrowtail=\"dot\"];\n"
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<< "\tsize=\"10,7.5\";\n"
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<< "\trotate=\"90\";\n";
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getDSGraph(I).printFunction(F, "Local");
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getClosedDSGraph(I).printFunction(F, "Closed");
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F << "}\n";
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} else {
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O << " error opening file for writing!\n";
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}
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if (Time)
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O << " [" << getDSGraph(I).getGraphSize() << ", "
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<< getClosedDSGraph(I).getGraphSize() << "]\n";
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else
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O << "\n";
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std::map<Function*, DSGraph*>::iterator DI = DSInfo.find(I);
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if (DI == DSInfo.end() || DI->second == 0)
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DSInfo.insert(std::make_pair(&*I, new DSGraph(*I)));
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}
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return false;
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}
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//===----------------------------------------------------------------------===//
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// PointerVal Class Implementation
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//
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void PointerVal::print(std::ostream &O) const {
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if (Node) {
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O << " Node: " << Node->getCaption() << "[" << Index << "]\n";
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} else {
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O << " NULL NODE\n";
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}
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}
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//===----------------------------------------------------------------------===//
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// PointerValSet Class Implementation
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//
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void PointerValSet::addRefs() {
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for (unsigned i = 0, e = Vals.size(); i != e; ++i)
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Vals[i].Node->addReferrer(this);
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}
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void PointerValSet::dropRefs() {
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for (unsigned i = 0, e = Vals.size(); i != e; ++i)
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Vals[i].Node->removeReferrer(this);
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}
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const PointerValSet &PointerValSet::operator=(const PointerValSet &PVS) {
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dropRefs();
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Vals.clear();
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Vals = PVS.Vals;
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addRefs();
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return *this;
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}
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// operator< - Allow insertion into a map...
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bool PointerValSet::operator<(const PointerValSet &PVS) const {
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if (Vals.size() < PVS.Vals.size()) return true;
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if (Vals.size() > PVS.Vals.size()) return false;
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if (Vals.size() == 1) return Vals[0] < PVS.Vals[0]; // Most common case
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std::vector<PointerVal> S1(Vals), S2(PVS.Vals);
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sort(S1.begin(), S1.end());
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sort(S2.begin(), S2.end());
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return S1 < S2;
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}
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bool PointerValSet::operator==(const PointerValSet &PVS) const {
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if (Vals.size() != PVS.Vals.size()) return false;
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if (Vals.size() == 1) return Vals[0] == PVS.Vals[0]; // Most common case...
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std::vector<PointerVal> S1(Vals), S2(PVS.Vals);
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sort(S1.begin(), S1.end());
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sort(S2.begin(), S2.end());
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return S1 == S2;
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}
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bool PointerValSet::add(const PointerVal &PV, Value *Pointer) {
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if (std::find(Vals.begin(), Vals.end(), PV) != Vals.end())
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return false;
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Vals.push_back(PV);
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if (Pointer) PV.Node->addPointer(Pointer);
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PV.Node->addReferrer(this);
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return true;
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}
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// removePointerTo - Remove a single pointer val that points to the specified
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// node...
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void PointerValSet::removePointerTo(DSNode *Node) {
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std::vector<PointerVal>::iterator I = std::find(Vals.begin(), Vals.end(), Node);
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assert(I != Vals.end() && "Couldn't remove nonexistent edge!");
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Vals.erase(I);
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Node->removeReferrer(this);
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}
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void PointerValSet::print(std::ostream &O) const {
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for (unsigned i = 0, e = Vals.size(); i != e; ++i)
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Vals[i].print(O);
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}
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283
lib/Analysis/DataStructure/Local.cpp
Normal file
283
lib/Analysis/DataStructure/Local.cpp
Normal file
@ -0,0 +1,283 @@
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//===- ComputeLocal.cpp - Compute a local data structure graph for a fn ---===//
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//
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// Compute the local version of the data structure graph for a function. The
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// external interface to this file is the DSGraph constructor.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/DataStructure.h"
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#include "llvm/Function.h"
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#include "llvm/iMemory.h"
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#include "llvm/iTerminators.h"
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#include "llvm/iPHINode.h"
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#include "llvm/iOther.h"
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Support/InstVisitor.h"
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using std::map;
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using std::vector;
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//===----------------------------------------------------------------------===//
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// GraphBuilder Class
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//===----------------------------------------------------------------------===//
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//
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// This class is the builder class that constructs the local data structure
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// graph by performing a single pass over the function in question.
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//
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namespace {
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class GraphBuilder : InstVisitor<GraphBuilder> {
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DSGraph &G;
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vector<DSNode*> &Nodes;
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DSNodeHandle &RetNode; // Node that gets returned...
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map<Value*, DSNodeHandle> &ValueMap;
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vector<vector<DSNodeHandle> > &FunctionCalls;
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public:
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GraphBuilder(DSGraph &g, vector<DSNode*> &nodes, DSNodeHandle &retNode,
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map<Value*, DSNodeHandle> &vm,
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vector<vector<DSNodeHandle> > &fc)
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: G(g), Nodes(nodes), RetNode(retNode), ValueMap(vm), FunctionCalls(fc) {
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visit(G.getFunction()); // Single pass over the function
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removeDeadNodes();
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}
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private:
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// Visitor functions, used to handle each instruction type we encounter...
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friend class InstVisitor<GraphBuilder>;
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void visitMallocInst(MallocInst &MI) { handleAlloc(MI, DSNode::NewNode); }
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void visitAllocaInst(AllocaInst &AI) { handleAlloc(AI, DSNode::AllocaNode);}
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void handleAlloc(AllocationInst &AI, DSNode::NodeTy NT);
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void visitPHINode(PHINode &PN);
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void visitGetElementPtrInst(GetElementPtrInst &GEP);
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void visitReturnInst(ReturnInst &RI);
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void visitLoadInst(LoadInst &LI);
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void visitStoreInst(StoreInst &SI);
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void visitCallInst(CallInst &CI);
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void visitSetCondInst(SetCondInst &SCI) {} // SetEQ & friends are ignored
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void visitFreeInst(FreeInst &FI) {} // Ignore free instructions
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void visitInstruction(Instruction &I) {
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#ifndef NDEBUG
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bool bad = isa<PointerType>(I.getType());
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for (Instruction::op_iterator i = I.op_begin(), E = I.op_end(); i!=E; ++i)
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bad |= isa<PointerType>(i->get()->getType());
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if (bad) {
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std::cerr << "\n\n\nUNKNOWN PTR INSTRUCTION type: " << I << "\n\n\n";
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assert(0 && "Cannot proceed");
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}
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#endif
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}
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private:
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// Helper functions used to implement the visitation functions...
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// createNode - Create a new DSNode, ensuring that it is properly added to
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// the graph.
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//
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DSNode *createNode(DSNode::NodeTy NodeType, const Type *Ty);
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// getValueNode - Return a DSNode that corresponds the the specified LLVM
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// value. This either returns the already existing node, or creates a new
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// one and adds it to the graph, if none exists.
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//
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DSNode *getValueNode(Value &V);
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// getLink - This method is used to either return the specified link in the
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// specified node if one exists. If a link does not already exist (it's
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// null), then we create a new node, link it, then return it.
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//
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DSNode *getLink(DSNode *Node, unsigned Link);
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// getSubscriptedNode - Perform the basic getelementptr functionality that
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// must be factored out of gep, load and store while they are all MAI's.
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//
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DSNode *getSubscriptedNode(MemAccessInst &MAI, DSNode *Ptr);
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// removeDeadNodes - After the graph has been constructed, this method
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// removes all unreachable nodes that are created because they got merged
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// with other nodes in the graph.
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//
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void removeDeadNodes();
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};
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}
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//===----------------------------------------------------------------------===//
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// DSGraph constructor - Simply use the GraphBuilder to construct the local
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// graph.
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DSGraph::DSGraph(Function &F) : Func(F), RetNode(0) {
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// Use the graph builder to construct the local version of the graph
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GraphBuilder B(*this, Nodes, RetNode, ValueMap, FunctionCalls);
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}
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//===----------------------------------------------------------------------===//
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// Helper method implementations...
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//
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// createNode - Create a new DSNode, ensuring that it is properly added to the
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// graph.
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//
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DSNode *GraphBuilder::createNode(DSNode::NodeTy NodeType, const Type *Ty) {
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DSNode *N = new DSNode(NodeType, Ty);
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Nodes.push_back(N);
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return N;
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}
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// getValueNode - Return a DSNode that corresponds the the specified LLVM value.
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// This either returns the already existing node, or creates a new one and adds
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// it to the graph, if none exists.
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//
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DSNode *GraphBuilder::getValueNode(Value &V) {
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assert(isa<PointerType>(V.getType()) && "Should only use pointer scalars!");
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DSNodeHandle &N = ValueMap[&V];
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if (N) return N; // Already have a node? Just return it...
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// Otherwise we need to create a new scalar node...
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N = createNode(DSNode::ScalarNode, V.getType());
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if (isa<GlobalValue>(V)) {
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// Traverse the global graph, adding nodes for them all, and marking them
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// all globals. Be careful to mark functions global as well as the
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// potential graph of global variables.
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//
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DSNode *G = getLink(N, 0);
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G->NodeType |= DSNode::GlobalNode;
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}
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return N;
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}
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// getLink - This method is used to either return the specified link in the
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// specified node if one exists. If a link does not already exist (it's
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// null), then we create a new node, link it, then return it.
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//
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DSNode *GraphBuilder::getLink(DSNode *Node, unsigned Link) {
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assert(Link < Node->getNumLinks() && "Link accessed out of range!");
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if (Node->getLink(Link) == 0) {
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DSNode::NodeTy NT;
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const Type *Ty;
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switch (Node->getType()->getPrimitiveID()) {
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case Type::PointerTyID:
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Ty = cast<PointerType>(Node->getType())->getElementType();
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NT = DSNode::ShadowNode;
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break;
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case Type::ArrayTyID:
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Ty = cast<ArrayType>(Node->getType())->getElementType();
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NT = DSNode::SubElement;
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break;
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case Type::StructTyID:
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Ty = cast<StructType>(Node->getType())->getContainedType(Link);
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NT = DSNode::SubElement;
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break;
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default:
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assert(0 && "Unexpected type to dereference!");
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abort();
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}
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DSNode *New = createNode(NT, Ty);
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Node->addEdgeTo(Link, New);
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}
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return Node->getLink(Link);
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}
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||||
// getSubscriptedNode - Perform the basic getelementptr functionality that must
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// be factored out of gep, load and store while they are all MAI's.
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//
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DSNode *GraphBuilder::getSubscriptedNode(MemAccessInst &MAI, DSNode *Ptr) {
|
||||
for (unsigned i = MAI.getFirstIndexOperandNumber(), e = MAI.getNumOperands();
|
||||
i != e; ++i)
|
||||
if (MAI.getOperand(i)->getType() == Type::UIntTy)
|
||||
Ptr = getLink(Ptr, 0);
|
||||
else if (MAI.getOperand(i)->getType() == Type::UByteTy)
|
||||
Ptr = getLink(Ptr, cast<ConstantUInt>(MAI.getOperand(i))->getValue());
|
||||
|
||||
if (MAI.getFirstIndexOperandNumber() == MAI.getNumOperands())
|
||||
Ptr = getLink(Ptr, 0); // All MAI's have an implicit 0 if nothing else.
|
||||
|
||||
return Ptr;
|
||||
}
|
||||
|
||||
|
||||
// removeDeadNodes - After the graph has been constructed, this method removes
|
||||
// all unreachable nodes that are created because they got merged with other
|
||||
// nodes in the graph. These nodes will all be trivially unreachable, so we
|
||||
// don't have to perform any non-trivial analysis here.
|
||||
//
|
||||
void GraphBuilder::removeDeadNodes() {
|
||||
for (unsigned i = 0; i != Nodes.size(); )
|
||||
if (!Nodes[i]->getReferrers().empty())
|
||||
++i; // This node is alive!
|
||||
else { // This node is dead!
|
||||
delete Nodes[i]; // Free memory...
|
||||
Nodes.erase(Nodes.begin()+i); // Remove from node list...
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
// Specific instruction type handler implementations...
|
||||
//
|
||||
|
||||
// Alloca & Malloc instruction implementation - Simply create a new memory
|
||||
// object, pointing the scalar to it.
|
||||
//
|
||||
void GraphBuilder::handleAlloc(AllocationInst &AI, DSNode::NodeTy NodeType) {
|
||||
DSNode *Scalar = getValueNode(AI);
|
||||
DSNode *New = createNode(NodeType, AI.getAllocatedType());
|
||||
Scalar->addEdgeTo(New); // Make the scalar point to the new node...
|
||||
}
|
||||
|
||||
// PHINode - Make the scalar for the PHI node point to all of the things the
|
||||
// incoming values point to... which effectively causes them to be merged.
|
||||
//
|
||||
void GraphBuilder::visitPHINode(PHINode &PN) {
|
||||
if (!isa<PointerType>(PN.getType())) return; // Only pointer PHIs
|
||||
|
||||
DSNode *Scalar = getValueNode(PN);
|
||||
for (unsigned i = 0, e = PN.getNumIncomingValues(); i != e; ++i)
|
||||
Scalar->mergeWith(getValueNode(*PN.getIncomingValue(i)));
|
||||
}
|
||||
|
||||
void GraphBuilder::visitGetElementPtrInst(GetElementPtrInst &GEP) {
|
||||
DSNode *Scalar = getValueNode(GEP);
|
||||
DSNode *Ptr = getSubscriptedNode(GEP, getValueNode(*GEP.getOperand(0)));
|
||||
Scalar->addEdgeTo(Ptr);
|
||||
}
|
||||
|
||||
void GraphBuilder::visitLoadInst(LoadInst &LI) {
|
||||
if (!isa<PointerType>(LI.getType())) return; // Only pointer PHIs
|
||||
DSNode *Ptr = getSubscriptedNode(LI, getValueNode(*LI.getOperand(0)));
|
||||
getValueNode(LI)->mergeWith(Ptr);
|
||||
}
|
||||
|
||||
void GraphBuilder::visitStoreInst(StoreInst &SI) {
|
||||
if (!isa<PointerType>(SI.getOperand(0)->getType())) return;
|
||||
DSNode *Value = getValueNode(*SI.getOperand(0));
|
||||
DSNode *DestPtr = getValueNode(*SI.getOperand(1));
|
||||
Value->mergeWith(getSubscriptedNode(SI, DestPtr));
|
||||
}
|
||||
|
||||
void GraphBuilder::visitReturnInst(ReturnInst &RI) {
|
||||
if (RI.getNumOperands() && isa<PointerType>(RI.getOperand(0)->getType())) {
|
||||
DSNode *Value = getValueNode(*RI.getOperand(0));
|
||||
Value->mergeWith(RetNode);
|
||||
RetNode = Value;
|
||||
}
|
||||
}
|
||||
|
||||
void GraphBuilder::visitCallInst(CallInst &CI) {
|
||||
FunctionCalls.push_back(vector<DSNodeHandle>());
|
||||
vector<DSNodeHandle> &Args = FunctionCalls.back();
|
||||
|
||||
for (unsigned i = 0, e = CI.getNumOperands(); i != e; ++i)
|
||||
if (isa<PointerType>(CI.getOperand(i)->getType()))
|
||||
Args.push_back(getValueNode(*CI.getOperand(i)));
|
||||
}
|
||||
156
lib/Analysis/DataStructure/Printer.cpp
Normal file
156
lib/Analysis/DataStructure/Printer.cpp
Normal file
@ -0,0 +1,156 @@
|
||||
//===- Printer.cpp - Code for printing data structure graphs nicely -------===//
|
||||
//
|
||||
// This file implements the 'dot' graph printer.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
#include "llvm/Analysis/DataStructure.h"
|
||||
#include "llvm/Module.h"
|
||||
#include "llvm/Assembly/Writer.h"
|
||||
#include <fstream>
|
||||
#include <sstream>
|
||||
|
||||
void DSNode::dump() const { print(std::cerr, 0); }
|
||||
|
||||
std::string DSNode::getCaption(Function *F) const {
|
||||
std::stringstream OS;
|
||||
WriteTypeSymbolic(OS, getType(), F ? F->getParent() : 0);
|
||||
|
||||
OS << " ";
|
||||
if (NodeType & ScalarNode) OS << "S";
|
||||
if (NodeType & AllocaNode) OS << "A";
|
||||
if (NodeType & NewNode ) OS << "N";
|
||||
if (NodeType & GlobalNode) OS << "G";
|
||||
if (NodeType & SubElement) OS << "E";
|
||||
if (NodeType & CastNode ) OS << "C";
|
||||
|
||||
return OS.str();
|
||||
}
|
||||
|
||||
static std::string getValueName(Value *V, Function &F) {
|
||||
std::stringstream OS;
|
||||
WriteAsOperand(OS, V, true, true, F.getParent());
|
||||
return OS.str();
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void replaceIn(std::string &S, char From, const std::string &To) {
|
||||
for (unsigned i = 0; i < S.size(); )
|
||||
if (S[i] == From) {
|
||||
S.replace(S.begin()+i, S.begin()+i+1,
|
||||
To.begin(), To.end());
|
||||
i += To.size();
|
||||
} else {
|
||||
++i;
|
||||
}
|
||||
}
|
||||
|
||||
static string escapeLabel(const string &In) {
|
||||
string Label(In);
|
||||
replaceIn(Label, '\\', "\\\\"); // Escape caption...
|
||||
replaceIn(Label, ' ', "\\ ");
|
||||
replaceIn(Label, '{', "\\{");
|
||||
replaceIn(Label, '}', "\\}");
|
||||
return Label;
|
||||
}
|
||||
|
||||
static void writeEdge(std::ostream &O, const void *SrcNode,
|
||||
const char *SrcNodePortName, int SrcNodeIdx,
|
||||
const DSNode *VS, const string &EdgeAttr = "") {
|
||||
O << "\tNode" << SrcNode << SrcNodePortName;
|
||||
if (SrcNodeIdx != -1) O << SrcNodeIdx;
|
||||
O << " -> Node" << (void*)VS;
|
||||
|
||||
if (!EdgeAttr.empty())
|
||||
O << "[" << EdgeAttr << "]";
|
||||
O << ";\n";
|
||||
}
|
||||
|
||||
void DSNode::print(std::ostream &O, Function *F) const {
|
||||
string Caption = escapeLabel(getCaption(F));
|
||||
|
||||
O << "\tNode" << (void*)this << " [ label =\"{" << Caption;
|
||||
|
||||
if (!Links.empty()) {
|
||||
O << "|{";
|
||||
for (unsigned i = 0; i < Links.size(); ++i) {
|
||||
if (i) O << "|";
|
||||
O << "<g" << i << ">";
|
||||
}
|
||||
O << "}";
|
||||
}
|
||||
O << "}\"];\n";
|
||||
|
||||
for (unsigned i = 0; i < Links.size(); ++i)
|
||||
if (Links[i])
|
||||
writeEdge(O, this, ":g", i, Links[i]);
|
||||
}
|
||||
|
||||
void DSGraph::print(std::ostream &O) const {
|
||||
O << "digraph DataStructures {\n"
|
||||
<< "\tnode [shape=Mrecord];\n"
|
||||
<< "\tedge [arrowtail=\"dot\"];\n"
|
||||
<< "\tsize=\"10,7.5\";\n"
|
||||
<< "\trotate=\"90\";\n"
|
||||
<< "\tlabel=\"Function\\ " << Func.getName() << "\";\n\n";
|
||||
|
||||
// Output all of the nodes...
|
||||
for (unsigned i = 0, e = Nodes.size(); i != e; ++i)
|
||||
Nodes[i]->print(O, &Func);
|
||||
|
||||
O << "\n";
|
||||
// Output all of the nodes edges for scalar labels
|
||||
for (std::map<Value*, DSNodeHandle>::const_iterator I = ValueMap.begin(),
|
||||
E = ValueMap.end(); I != E; ++I) {
|
||||
O << "\tNode" << (void*)I->first << "[ shape=circle, label =\""
|
||||
<< escapeLabel(getValueName(I->first, Func)) << "\",style=dotted];\n";
|
||||
writeEdge(O, I->first, "",-1, I->second.get(),"arrowtail=tee,style=dotted");
|
||||
}
|
||||
|
||||
// Output the returned value pointer...
|
||||
if (RetNode != 0) {
|
||||
O << "\tNode0x1" << "[ shape=circle, label =\""
|
||||
<< escapeLabel("Return") << "\"];\n";
|
||||
writeEdge(O, (void*)1, "", -1, RetNode, "arrowtail=tee,style=dotted");
|
||||
}
|
||||
|
||||
// Output all of the call nodes...
|
||||
for (unsigned i = 0, e = FunctionCalls.size(); i != e; ++i) {
|
||||
const std::vector<DSNodeHandle> &Call = FunctionCalls[i];
|
||||
O << "\tNode" << (void*)&Call << " [shape=record,label=\"{call|{";
|
||||
for (unsigned j = 0, e = Call.size(); j != e; ++j) {
|
||||
if (j) O << "|";
|
||||
O << "<g" << j << ">";
|
||||
}
|
||||
O << "}}\"];\n";
|
||||
|
||||
for (unsigned j = 0, e = Call.size(); j != e; ++j)
|
||||
if (Call[j])
|
||||
writeEdge(O, &Call, ":g", j, Call[j]);
|
||||
}
|
||||
|
||||
|
||||
O << "}\n";
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
// print - Print out the analysis results...
|
||||
void LocalDataStructures::print(std::ostream &O, Module *M) const {
|
||||
for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I)
|
||||
if (!I->isExternal()) {
|
||||
std::string Filename = "ds." + I->getName() + ".dot";
|
||||
O << "Writing '" << Filename << "'...";
|
||||
std::ofstream F(Filename.c_str());
|
||||
|
||||
if (F.good()) {
|
||||
DSGraph &Graph = getDSGraph(*I);
|
||||
Graph.print(F);
|
||||
O << " [" << Graph.getGraphSize() << "]\n";
|
||||
} else {
|
||||
O << " error opening file for writing!\n";
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user