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Cache DT[*SI] lookup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36239 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -282,10 +282,12 @@ PostDominanceFrontier::calculate(const PostDominatorTree &DT,
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if (BB)
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for (pred_iterator SI = pred_begin(BB), SE = pred_end(BB);
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SI != SE; ++SI)
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SI != SE; ++SI) {
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// Does Node immediately dominate this predecessor?
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if (DT[*SI] && DT[*SI]->getIDom() != Node)
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DominatorTree::Node *SINode = DT[*SI];
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if (SINode && SINode->getIDom() != Node)
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S.insert(*SI);
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}
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// At this point, S is DFlocal. Now we union in DFup's of our children...
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// Loop through and visit the nodes that Node immediately dominates (Node's
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