[llvm] [Coverage] Rework Decision/Expansion/Branch (PR #78969)

[Fangrui Song via llvm-commits]

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@@ -582,6 +583,177 @@ static unsigned getMaxBitmapSize(const CounterMappingContext &Ctx,
   return MaxBitmapID + (SizeInBits / CHAR_BIT);
 }
 
+namespace {
+
+/// Collect Decisions, Branchs, and Expansions and associate them.
+class MCDCDecisionRecorder {
+
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MaskRay wrote:

delete blank line

https://github.com/llvm/llvm-project/pull/78969