We can't drop support for RAUW entirely in `MDNode`s, since it's
required for graph construction. This comment was from before I'd done
the math on that (out-of-tree), and never should have been committed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225334
91177308-0d34-0410-b5e6-
96231b3b80d8
/// collision, the uniquing bit is dropped.
///
/// TODO: Make uniquing opt-out (status: mandatory, sometimes dropped).
-/// TODO: Drop support for RAUW.
class GenericMDNode : public MDNode {
friend class Metadata;
friend class MDNode;