Why does the branch coverage of all files show as 0% when using llvm-cov to analyze Swift files?

[ZhengXiuQun]

Description

Why does the branch coverage of all files show as 0% when using llvm-cov to analyze Swift files? The llvm developer replied that it is because Swift does not support generating branch coverage. Is that true?

Reproduction

Expected behavior

Why does the branch coverage of all files show as 0% when using llvm-cov to analyze Swift files?

Environment

Latest

Additional information

Why does the branch coverage of all files show as 0% when using llvm-cov to analyze Swift files?

[hamishknight]

The llvm developer replied that it is because Swift does not support generating branch coverage. Is that true?

This is correct, Swift only currently supports emitting code regions and skipped regions

[ZhengXiuQun]

Is there a plan to support branch coverage?

[hamishknight]

It's something I'd like to do, but it's not on the immediate roadmap