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Cache DT[*SI] lookup.

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llvm-svn: 36239
This commit is contained in:
Devang Patel 2007-04-18 01:19:55 +00:00
parent 0ee78670b8
commit ffbee86b8e
1 changed files with 4 additions and 2 deletions
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6
lib/Analysis/PostDominators.cpp
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@ -282,10 +282,12 @@ PostDominanceFrontier::calculate(const PostDominatorTree &DT,
if (BB)
for (pred_iterator SI = pred_begin(BB), SE = pred_end(BB);
SI != SE; ++SI)
SI != SE; ++SI) {
// Does Node immediately dominate this predecessor?
if (DT[*SI] && DT[*SI]->getIDom() != Node)
DominatorTree::Node *SINode = DT[*SI];
if (SINode && SINode->getIDom() != Node)
S.insert(*SI);
}
// At this point, S is DFlocal. Now we union in DFup's of our children...
// Loop through and visit the nodes that Node immediately dominates (Node's