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When building local graphs, clone the initializer for constant globals into each
local graph that uses the global. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11850 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -177,6 +177,18 @@ DSGraph::DSGraph(const TargetData &td, Function &F, DSGraph *GG)
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else
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++I;
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// If there are any constant globals referenced in this function, merge their
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// initializers into the local graph from the globals graph.
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if (ScalarMap.global_begin() != ScalarMap.global_end()) {
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ReachabilityCloner RC(*this, *GG, 0);
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for (DSScalarMap::global_iterator I = ScalarMap.global_begin();
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I != ScalarMap.global_end(); ++I)
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if (GlobalVariable *GV = dyn_cast<GlobalVariable>(*I))
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if (GV->isConstant())
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RC.merge(ScalarMap[GV], GG->ScalarMap[GV]);
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}
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markIncompleteNodes(DSGraph::MarkFormalArgs);
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// Remove any nodes made dead due to merging...
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@ -894,18 +906,20 @@ bool LocalDataStructures::run(Module &M) {
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const TargetData &TD = getAnalysis<TargetData>();
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{
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GraphBuilder GGB(*GlobalsGraph);
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// Add initializers for all of the globals to the globals graph...
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for (Module::giterator I = M.gbegin(), E = M.gend(); I != E; ++I)
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if (!I->isExternal())
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GGB.mergeInGlobalInitializer(I);
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}
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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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DSInfo.insert(std::make_pair(I, new DSGraph(TD, *I, GlobalsGraph)));
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GraphBuilder GGB(*GlobalsGraph);
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// Add initializers for all of the globals to the globals graph...
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for (Module::giterator I = M.gbegin(), E = M.gend(); I != E; ++I)
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if (!I->isExternal())
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GGB.mergeInGlobalInitializer(I);
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GlobalsGraph->removeTriviallyDeadNodes();
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GlobalsGraph->markIncompleteNodes(DSGraph::MarkFormalArgs);
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return false;
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