[llvm] [DebugInfo][RemoveDIs] Instrument jump-threading to update DPValues (PR #73127)

[Orlando Cazalet-Hyams via llvm-commits]

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@@ -91,6 +92,47 @@ exit:                                             ; preds = %bb.f4, %bb.f3, %bb.
   ret void, !dbg !29
 }
 
+; Test for the cloning of dbg.values on elided instructions -- down one path
+; being threaded, the and in the function below is optimised away, but it's
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OCHyams wrote:

Could you demark "and" so it doesn't look like a word, e.g. \`and\`?

nit: it's -> its (apostrophe is possessive unless there's already a contraction, I think is the rule. At the very least, "it's" is always "it is" and never "belonging to it").

There's another "it's" in the next sentence that wants the same treatment.

https://github.com/llvm/llvm-project/pull/73127