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Fix this code so that it doesn't try to iterate through a std::vector 

while calling changeImmediateDominator, which removes elements from the
vector. This fixes PR5097.

llvm-svn: 83166
This commit is contained in:
Dan Gohman 2009-09-30 20:54:16 +00:00
parent fd2dcba7f3
commit ea0bb8f555
1 changed files with 4 additions and 3 deletions
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7
llvm/lib/Transforms/Utils/LoopSimplify.cpp
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@ -274,9 +274,10 @@ ReprocessLoop:
DomTreeNode *Node = DT->getNode(ExitingBlock);
const std::vector<DomTreeNodeBase<BasicBlock> *> &Children =
Node->getChildren();
for (unsigned k = 0, g = Children.size(); k != g; ++k) {
DT->changeImmediateDominator(Children[k], Node->getIDom());
if (DF) DF->changeImmediateDominator(Children[k]->getBlock(),
while (!Children.empty()) {
DomTreeNode *Child = Children.front();
DT->changeImmediateDominator(Child, Node->getIDom());
if (DF) DF->changeImmediateDominator(Child->getBlock(),
Node->getIDom()->getBlock(),
DT);
}