[llvm] [ADT] ImutAVLFactory: avoid overhead of vector for freelist (PR #196534)

[Christoph Cullmann via llvm-commits]

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@@ -368,7 +369,9 @@ class ImutAVLFactory {
   CacheTy Cache;
   uintptr_t Allocator;
   std::vector<TreeTy*> createdNodes;
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christoph-cullmann wrote:

Sorry, I did miss that. The createNodes didn’t show in my profile, no real idea what is there average size.

https://github.com/llvm/llvm-project/pull/196534