[llvm] [memprof] Add call stack IDs to IndexedAllocationInfo (PR #85888)

[Teresa Johnson via llvm-commits]

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@@ -97,6 +97,8 @@ class MemProfReader {
   }
   // A mapping from FrameId (a hash of the contents) to the frame.
   llvm::DenseMap<FrameId, Frame> IdToFrame;
+  // A vector of all unique call stacks, indexed by CallStackId.
+  llvm::SmallVector<llvm::SmallVector<FrameId>> CallStacks;
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teresajohnson wrote:

This seems unused and should be deleted - I think this was from the earlier solution?

https://github.com/llvm/llvm-project/pull/85888