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

[via llvm-commits]

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@@ -1190,18 +1190,33 @@ struct VPIRPhi : public VPIRInstruction {
 #endif
 };
 
+/// Helper to manage IR metadata for recipes. It filters out metadata that
+/// cannot be proagated.
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ayalz wrote:

```suggestion
/// cannot be propagated.
```

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