[llvm] [VPlan] Manage instruction metadata in VPlan. (PR #135272)

[Florian Hahn via llvm-commits]

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@@ -290,13 +290,6 @@ struct VPTransformState {
   /// vector loop.
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fhahn wrote:

I think this is still accurate; applyMetadata in this patch applies metadata already on `Orig`, while `addNewMetadata` adds metadata from versioning, not present at the original instructions.

https://github.com/llvm/llvm-project/pull/135272