[LLVMdev] [RFC] Less memory and greater maintainability for debug info IR

[David Blaikie]

>
> >> By leveraging the use-list
> >> infrastructure for metadata operands -- i.e., only using value handles
> >> for non-metadata operands -- we'll [...] increase
> >> RAUW speed.


This is something I know next to nothing about - why is it that use-lists
would be applicable to metadata-to-metadata operands, but not for
non-metadata operands?
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