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Fix reference to iterator invalidated by an erase operation. Uncovered
by _GLIBCXX_DEBUG. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37796 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -564,11 +564,12 @@ Loop *LoopSimplify::SeparateNestedLoop(Loop *L) {
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// Scan all of the loop children of L, moving them to OuterLoop if they are
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// not part of the inner loop.
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for (Loop::iterator I = L->begin(); I != L->end(); )
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if (BlocksInL.count((*I)->getHeader()))
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const std::vector<Loop*> &SubLoops = L->getSubLoops();
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for (size_t I = 0; I != SubLoops.size(); )
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if (BlocksInL.count(SubLoops[I]->getHeader()))
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++I; // Loop remains in L
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else
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NewOuter->addChildLoop(L->removeChildLoop(I));
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NewOuter->addChildLoop(L->removeChildLoop(SubLoops.begin() + I));
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// Now that we know which blocks are in L and which need to be moved to
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// OuterLoop, move any blocks that need it.
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