Implement the mimalloc option to speed up the compiler on Windows #76563
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@swift-ci please test Linux Platform |
| $Args += "-l" | ||
| $Args += $ExePath | ||
| Invoke-Program "$SourceCache\mimalloc\bin\minject" @Args | ||
| dir "$ExePath" |
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I mean to keep it so that we can verify that the import table is updated in the toolchain build log
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@hjyamauchi have you observed significant compiler performance gains using mimalloc? Would you recommend the MS Swift Toolchain use it by default in an upcoming release? |
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@gregcotten In our internal app build, the build was about ~4% faster (which we think is meaningful in our long, long build times) and it seemed stable/robust. We have a plan to have it enabled by default in our future internal toolchain update but that's currently blocked by various other factors. I encourage testing it out independently, if you can :) |
Thanks for the info! After adopting macros into a Windows Swift production app compile times have grown exponentially and I'm looking for any savings possible! Not sure if it's worth the hassle of maintaining my own toolchain though... |
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Sure! We, BCNY, have our own toolchain builds where it's enabled by default, if you're interested (note they're separate from the official swift.org builds): https://github.com/thebrowsercompany/swift-build We may be able to enable it by default upstream but I cannot tell whether or when it would happen :) |
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