Thanks, compile time improvements are always good news!

Out of curiosity, does this impact builds targeting Android on Linux or Windows?

Thanks,
Botond

On Thu, Apr 9, 2020 at 12:52 PM David Major <dma...@mozilla.com> wrote:
>
> As of bug 1326486, our clang toolchains for Linux and Windows are built
> with PGO. (Apologies to Mac users: that toolchain is cross-compiled.)
>
> Under optimal conditions (Spidermonkey build, touch mfbt) I've seen 10-15%
> compile time improvements locally, but in more common scenarios the gains
> will be diluted by other parts of the system. Perfherder measured 5-9%
> improvements in CI.
>
> To pick up a new compiler: after the next time you update your tree, run
> `./mach bootstrap` or `cd ~/.mozbuild && /path/to/mach artifact toolchain
> --from-build linux64-clang`, or on Windows replace the last part with
> `win64-clang-cl`.
>
> Happy compiling!
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