[clang-tools-extra] [clang-tidy] Improve performance of google-runtime-int (PR #86596)

[Paul Kirth via cfe-commits]

ilovepi wrote:

Well, its down to about 15 minutes from 1hr 40 min, which is a pretty great improvement. 15 minutes does still seem to be too long for a file that's only 2KLOC. I know its more complex w/ headers and macros, but it does only take about 1-2 minutes to compile normally, so I feel like it should finish a bit faster than what I'm currently seeing with this patch.

https://github.com/llvm/llvm-project/pull/86596