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Only clone global nodes between graphs if both graphs have the global.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11928 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -279,6 +279,9 @@ void BUDataStructures::calculateGraph(DSGraph &Graph) {
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//
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DSGraph &GI = getDSGraph(*Callee); // Graph to inline
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if (Callee->getName() == "bc_raise")
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std::cerr << "HERE!\n";
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DEBUG(std::cerr << " Inlining graph for " << Callee->getName()
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<< "[" << GI.getGraphSize() << "+"
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<< GI.getAuxFunctionCalls().size() << "] into '"
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@ -33,10 +33,6 @@ namespace {
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Statistic<> NumDNE ("dsa", "Number of nodes removed by reachability");
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Statistic<> NumTrivialDNE ("dsa", "Number of nodes trivially removed");
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Statistic<> NumTrivialGlobalDNE("dsa", "Number of globals trivially removed");
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cl::opt<bool>
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EnableDSNodeGlobalRootsHack("enable-dsa-globalrootshack", cl::Hidden,
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cl::desc("Make DSA less aggressive when cloning graphs"));
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};
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#if 1
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@ -1239,15 +1235,12 @@ void DSGraph::mergeInGraph(const DSCallSite &CS, Function &F,
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AuxFunctionCalls.push_back(DSCallSite(Graph.AuxFunctionCalls[i], RC));
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}
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// If the user requested it, add the nodes that we need to clone to the
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// RootNodes set.
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if (!EnableDSNodeGlobalRootsHack)
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// FIXME: Why is this not iterating over the globals in the graph??
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for (node_iterator NI = Graph.node_begin(), E = Graph.node_end();
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NI != E; ++NI)
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if (!(*NI)->getGlobals().empty())
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RC.getClonedNH(*NI);
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// Clone over all globals that appear in the caller and callee graphs.
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for (DSScalarMap::global_iterator GI = Graph.getScalarMap().global_begin(),
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E = Graph.getScalarMap().global_end(); GI != E; ++GI)
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if (GlobalVariable *GV = dyn_cast<GlobalVariable>(*GI))
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if (ScalarMap.count(GV))
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RC.merge(ScalarMap[GV], Graph.getNodeForValue(GV));
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} else {
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DSNodeHandle RetVal = getReturnNodeFor(F);
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