Do not walk invalid iterator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42812 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2007-10-09 21:31:36 +00:00
parent cd80c169d7
commit b593898e11

View File

@ -632,8 +632,8 @@ void LoopUnswitch::ReplaceLoopExternalDFMember(Loop *L, BasicBlock *BB,
DominanceFrontier::DomSetType &DFSet = DFI->second;
for (DominanceFrontier::DomSetType::iterator DI = DFSet.begin(),
DE = DFSet.end(); DI != DE; ++DI) {
BasicBlock *B = *DI;
DE = DFSet.end(); DI != DE;) {
BasicBlock *B = *DI++;
if (L->contains(B))
continue;