[llvm] [VPlan] Port invalid cost remarks to VPlan. (PR #99322)

[via llvm-commits]

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@@ -891,10 +892,12 @@ static void debugVectorizationMessage(const StringRef Prefix,
 /// instruction that prevents vectorization.  Otherwise \p TheLoop is used for
 /// the location of the remark.  \return the remark object that can be
 /// streamed to.
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ayalz wrote:

Add documentation for \p DL?

https://github.com/llvm/llvm-project/pull/99322