[llvm] [InstrRef] Skip clobbered EntryValue register recovery (PR #77938)

[Jeremy Morse via llvm-commits]

https://github.com/jmorse approved this pull request.

LGTM; I guess there was no accounting for entry-value expressions not generated prior to LiveDebugValues when this was written :(.

Does that mean the middle-bits of InstrRefBasedLDV propagating variable locations are going to eventually need to handle incoming entry-values? That could mean some special juggling is required, but I think it should fit into the overall model.

https://github.com/llvm/llvm-project/pull/77938