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Add a timer, fix a minor bug.
Also, use RC::merge when possible, reducing the number of nodes allocated, then immediately merged away from 2985444 to 2193852 on perlbmk. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10991 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -779,7 +779,7 @@ DSNodeHandle ReachabilityCloner::getClonedNH(const DSNodeHandle &SrcNH) {
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DSNode *DN = new DSNode(*SN, &Dest, true /* Null out all links */);
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DN->maskNodeTypes(BitsToKeep);
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NH.setNode(DN);
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NH = DN;
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// Next, recursively clone all outgoing links as necessary. Note that
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// adding these links can cause the node to collapse itself at any time, and
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@ -814,7 +814,7 @@ DSNodeHandle ReachabilityCloner::getClonedNH(const DSNodeHandle &SrcNH) {
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DSNodeHandle &DestGNH = NodeMap[SrcGNH.getNode()];
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assert(DestGNH.getNode() == NH.getNode() &&"Global mapping inconsistent");
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Dest.getNodeForValue(GV).mergeWith(DSNodeHandle(DestGNH.getNode(),
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DestGNH.getOffset()+NH.getOffset()));
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DestGNH.getOffset()+SrcGNH.getOffset()));
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if (CloneFlags & DSGraph::UpdateInlinedGlobals)
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Dest.getInlinedGlobals().insert(GV);
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@ -1619,6 +1619,7 @@ void DSGraph::removeDeadNodes(unsigned Flags) {
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DSGraph::StripIncompleteBit);
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// Mark all nodes reachable by (non-global) scalar nodes as alive...
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{ TIME_REGION(Y, "removeDeadNodes:scalarscan");
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for (ScalarMapTy::iterator I = ScalarMap.begin(), E = ScalarMap.end(); I !=E;)
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if (isa<GlobalValue>(I->first)) { // Keep track of global nodes
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assert(I->second.getNode() && "Null global node?");
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@ -1626,8 +1627,14 @@ void DSGraph::removeDeadNodes(unsigned Flags) {
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GlobalNodes.push_back(std::make_pair(I->first, I->second.getNode()));
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// Make sure that all globals are cloned over as roots.
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if (!(Flags & DSGraph::RemoveUnreachableGlobals))
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if (!(Flags & DSGraph::RemoveUnreachableGlobals)) {
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DSGraph::ScalarMapTy::iterator SMI =
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GlobalsGraph->getScalarMap().find(I->first);
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if (SMI != GlobalsGraph->getScalarMap().end())
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GGCloner.merge(SMI->second, I->second);
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else
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GGCloner.getClonedNH(I->second);
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}
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++I;
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} else {
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// Check to see if this is a worthless node generated for non-pointer
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@ -1648,6 +1655,7 @@ void DSGraph::removeDeadNodes(unsigned Flags) {
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++I;
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}
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}
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}
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// The return values are alive as well.
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for (ReturnNodesTy::iterator I = ReturnNodes.begin(), E = ReturnNodes.end();
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