[PATCH] D124687: [Tooling/DependencyScanning & Preprocessor] Refactor dependency scanning to record and use pre-lexed preprocessor directive tokens, instead of minimized sources

Wed May 4 12:37:48 PDT 2022

akyrtzi added a comment.

In D124687#3486473 <https://reviews.llvm.org/D124687#3486473>, @akyrtzi wrote:

> In D124687#3485710 <https://reviews.llvm.org/D124687#3485710>, @tschuett wrote:
>
>> Is there overhead in the non dependency scanning mode?
>
> Good suggestion, I'll do some measurements and get back to you.

I took measurements for preprocessing the clang sources, with a release+thin-LTO build, and differences are within the noise level.

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  https://reviews.llvm.org/D124687/new/

https://reviews.llvm.org/D124687