[llvm] [VPlan] Document current status. (PR #85689)

[Florian Hahn via llvm-commits]

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@@ -248,3 +291,6 @@ References
 
 .. [9] "Extending LoopVectorizer: OpenMP4.5 SIMD and Outer Loop
     Auto-Vectorization", Intel Vectorizer Team, LLVM Developers' Meeting 2016.
+
+.. [10] "VPlan: Status Update and Future Roadmap", Florian Hahn, LLVM
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fhahn wrote:

Missed originally, should be addressed in 309a881dccb82bf1f101cf138bee3e7400968ed8

https://github.com/llvm/llvm-project/pull/85689