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Parallelize clang-tidy hook #48

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Parallelize clang-tidy hook #48

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@hx507 hx507 commented Jun 20, 2022

Currently clang-tidy hook is running in serial, which can be slow if multiple large files are modified.
Clang-tidy is trivially parallelize-able per file, so why don't we take advantage of that?
Locally it speeds up a ~8 sec clang-tidy run to ~3 sec, which is bottle-necked on largest file changed -- still much faster.

Currently clang-tidy hook is running in serial, which can be slow if multiple large files are modified.
Clang-tidy is trivially parallelize-able per file, so why don't we take advantage of that?
Locally it speeds up a ~8 sec clang-tidy run to ~3 sec, which is bottle-necked on largest file changed -- still much faster.
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