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Avoid calling getUniqueExitBlocks from within LoopSimplify, as it depends
on loops having dedicated exits, which LoopSimplify can no longer always guarantee. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86181 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -241,7 +241,14 @@ ReprocessLoop:
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// loop-invariant instructions out of the way to open up more
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// loop-invariant instructions out of the way to open up more
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// opportunities, and the disadvantage of having the responsibility
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// opportunities, and the disadvantage of having the responsibility
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// to preserve dominator information.
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// to preserve dominator information.
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if (ExitBlocks.size() > 1 && L->getUniqueExitBlock()) {
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bool UniqueExit = true;
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if (!ExitBlocks.empty())
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for (unsigned i = 1, e = ExitBlocks.size(); i != e; ++i)
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if (ExitBlocks[i] != ExitBlocks[0]) {
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UniqueExit = false;
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break;
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}
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if (UniqueExit) {
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SmallVector<BasicBlock*, 8> ExitingBlocks;
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SmallVector<BasicBlock*, 8> ExitingBlocks;
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L->getExitingBlocks(ExitingBlocks);
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L->getExitingBlocks(ExitingBlocks);
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for (unsigned i = 0, e = ExitingBlocks.size(); i != e; ++i) {
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for (unsigned i = 0, e = ExitingBlocks.size(); i != e; ++i) {
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