[llvm] [clang] [clang][CoverageMapping] Refactor when setting MC/DC True/False (PR #78202)

[NAKAMURA Takumi via cfe-commits]

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@@ -668,6 +668,8 @@ struct MCDCCoverageBuilder {
   llvm::SmallVector<const BinaryOperator *> NestLevel;
   llvm::DenseMap<const Stmt *, MCDCConditionID> &CondIDs;
   llvm::DenseMap<const Stmt *, unsigned> &MCDCBitmapMap;
+  llvm::DenseMap<const Stmt *, MCDCConditionID> TrueCondIDs;
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chapuni wrote:

I think `TrueCondIDs` and `FalseCondIDs` can be unified.

https://github.com/llvm/llvm-project/pull/78202