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[objcarcopts] Some more minor code cleanups/comment additions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184531 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -571,7 +571,7 @@ namespace {
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void
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PtrState::Merge(const PtrState &Other, bool TopDown) {
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Seq = MergeSeqs(Seq, Other.Seq, TopDown);
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KnownPositiveRefCount = KnownPositiveRefCount && Other.KnownPositiveRefCount;
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KnownPositiveRefCount &= Other.KnownPositiveRefCount;
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// If we're not in a sequence (anymore), drop all associated state.
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if (Seq == S_None) {
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@ -584,6 +584,10 @@ PtrState::Merge(const PtrState &Other, bool TopDown) {
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// mixing them is unsafe.
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ClearSequenceProgress();
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} else {
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// Otherwise merge the other PtrState's RRInfo into our RRInfo. At this
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// point, we know that currently we are not partial. Stash whether or not
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// the merge operation caused us to undergo a partial merging of reverse
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// insertion points.
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Partial = RRI.Merge(Other.RRI);
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}
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}
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