[llvm] Insert symbols for prefetch targets read from basic blocks section profile. (PR #168439)

[Sriraman Tallam via llvm-commits]

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@@ -50,9 +60,12 @@ struct FunctionPathAndClusterInfo {
   // the edge a -> b (a is not cloned). The index of the path in this vector
   // determines the `UniqueBBID::CloneID` of the cloned blocks in that path.
   SmallVector<SmallVector<unsigned>> ClonePaths;
+  // Code prefetch targets, specified by the subblock ID of which beginning must
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tmsri wrote:

Suggest rephrasing this comment to something like:  "Code Prefetch Target list, the beginning of each Subblock is the target".

https://github.com/llvm/llvm-project/pull/168439