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cache dereferenced iterator

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llvm-svn: 109093
This commit is contained in:
Gabor Greif 2010-07-22 11:07:46 +00:00
parent a7509fca78
commit e826ece8c2
1 changed files with 4 additions and 3 deletions
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7
lib/Analysis/RegionInfo.cpp
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@ -315,10 +315,11 @@ void Region::clearNodeCache() {
bool RegionInfo::isCommonDomFrontier(BasicBlock *BB, BasicBlock *entry,
BasicBlock *exit) const {
for (pred_iterator PI = pred_begin(BB), PE = pred_end(BB); PI != PE; ++PI)
if (DT->dominates(entry, *PI) && !DT->dominates(exit, *PI))
for (pred_iterator PI = pred_begin(BB), PE = pred_end(BB); PI != PE; ++PI) {
BasicBlock *P = *PI;
if (DT->dominates(entry, P) && !DT->dominates(exit, P))
return false;
}
return true;
}