[clang] [llvm] [Coverage] Make additional counters available for BranchRegion. NFC. (PR #120930)

[NAKAMURA Takumi via cfe-commits]

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@@ -884,6 +884,9 @@ struct CounterCoverageMappingBuilder
   /// The map of statements to count values.
   llvm::DenseMap<const Stmt *, CounterPair> &CounterMap;
 
+  CounterExpressionBuilder::SubstMap MapToExpand;
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chapuni wrote:

Done.

https://github.com/llvm/llvm-project/pull/120930