Improve ClangCL compilation time on Windows. #55208
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StefanStojanovic
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Forgot to self-assign yesterday. I'm working on it and should have a PR for it this week. |
StefanStojanovic
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nodejs-github-bot
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Fixes: #55208 PR-URL: #55249 Reviewed-By: Yagiz Nizipli <[email protected]>
louwers
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Fixes: nodejs#55208 PR-URL: nodejs#55249 Reviewed-By: Yagiz Nizipli <[email protected]>
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Fixes: nodejs#55208 PR-URL: nodejs#55249 Reviewed-By: Yagiz Nizipli <[email protected]>
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Fixes: #55208 PR-URL: #55249 Reviewed-By: Yagiz Nizipli <[email protected]>
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Version
main branch
Platform
Subsystem
build
What steps will reproduce the bug?
Compiling Node.js with ClangCL eg. running
vcbuild.bat clang-cl.How often does it reproduce? Is there a required condition?
Always.
What is the expected behavior? Why is that the expected behavior?
I expect small, subtle differences between MSVC and ClangCL compilation time.
What do you see instead?
ClangCL compilation is ~2.5 slower (less with x64, more with ARM64).
Additional information
The main difference is that ClangCL doesn't use precompiled headers, which MSVC does. There might be others too.
Refs: #52809
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