[clang] [llvm] [IR] Do not store Function inside BlockAddress (PR #137958)

[Matt Arsenault via cfe-commits]

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@@ -1688,8 +1688,7 @@ class LLVMContextImpl {
 
   StringMap<std::unique_ptr<ConstantDataSequential>> CDSConstants;
 
-  DenseMap<std::pair<const Function *, const BasicBlock *>, BlockAddress *>
-      BlockAddresses;
+  DenseMap<const BasicBlock *, BlockAddress *> BlockAddresses;
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arsenm wrote:

I'm working on moving this out of the LLVMContext 

https://github.com/llvm/llvm-project/pull/137958