[all-commits] [llvm/llvm-project] 80277b: Resurrect FalseCnt in SwitchStmt that was pruned i...

[NAKAMURA Takumi via All-commits]

  Branch: refs/heads/users/chapuni/cov/switchfalse
  Home:   https://github.com/llvm/llvm-project
  Commit: 80277bb2e9cd69627126cc3b62b819fd889c8648
      https://github.com/llvm/llvm-project/commit/80277bb2e9cd69627126cc3b62b819fd889c8648
  Author: NAKAMURA Takumi <geek4civic at gmail.com>
  Date:   2024-12-18 (Wed, 18 Dec 2024)

  Changed paths:
    M clang/lib/CodeGen/CoverageMappingGen.cpp
    M clang/test/CoverageMapping/switch.cpp
    M clang/test/CoverageMapping/switchmacro.c

  Log Message:
  -----------
  Resurrect FalseCnt in SwitchStmt that was pruned in #112694

I missed that FalseCnt for each Case was used to calculate percentage
in the SwitchStmt.  At the moment I resurrect them.

In `!HasDefaultCase`, the pair of Counters shall be `[CaseCountSum, FalseCnt]`.
(Reversal of before #112694)
I think it can be considered as the False count on SwitchStmt.

FalseCnt shall be folded (same as current impl) in the coming
SingleByteCoverage changes, since percentage would not make sense.



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