Optimizing the unoptimizable: a journey to faster C++ compile times

Re:Optimizing the unoptimizable: a journey to faster C++ com... by vitaut on Sunday January 07, 2024 @05:35PM (#38905916)

Unfortunately the std module alone doesn't help much because 1 second is 3x slower than before the optimization described in the post but maybe more fine-grained modules will (or if std module import made faster).

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Re:Optimizing the unoptimizable: a journey to faster C++ com... by pjmlp on Monday January 08, 2024 @02:02AM (#38909009)

For the whole library, everything.

Also Microsof Office team has been migrating to modules, with great build improvements.

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Re:Optimizing the unoptimizable: a journey to faster C++ com... by za3faran on Monday January 08, 2024 @09:36AM (#38912487)

Any place where I can read up more about this?

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Re:Optimizing the unoptimizable: a journey to faster C++ com... by pjmlp on Monday January 08, 2024 @09:57AM (#38912822)

https://devblogs.microsoft.com/cppblog/integrating-c-header-...

Key takeway

"Fortunately, we were able to show a build performance improvement great enough that the team agreed to adopt header units into the Office production build system alongside msvc 17.6.6!"

Unfortunely the performance findings blogpost is still WIP.

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