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| author | Dan Gohman <gohman@apple.com> | 2009-09-30 20:54:16 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-09-30 20:54:16 +0000 |
| commit | 5184635eda68a0cdcd39c958ccc11ba1843bcc7b (patch) | |
| tree | 718ce2d7bf5590452ba09218741077b86e55a1b4 /lib/Transforms/Utils/LoopSimplify.cpp | |
| parent | 3a90c9b8edb53ea1ea57d94f7ab256608b5b30c6 (diff) | |
| download | llvm-5184635eda68a0cdcd39c958ccc11ba1843bcc7b.tar.gz llvm-5184635eda68a0cdcd39c958ccc11ba1843bcc7b.tar.bz2 llvm-5184635eda68a0cdcd39c958ccc11ba1843bcc7b.tar.xz | |
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83166 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Utils/LoopSimplify.cpp')
| -rw-r--r-- | lib/Transforms/Utils/LoopSimplify.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/Transforms/Utils/LoopSimplify.cpp b/lib/Transforms/Utils/LoopSimplify.cpp index ffa12bfb7f..c22708a92b 100644 --- a/lib/Transforms/Utils/LoopSimplify.cpp +++ b/lib/Transforms/Utils/LoopSimplify.cpp @@ -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); } |