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StefanStojanovic opened this issue Oct 1, 2024 · 1 comment · Fixed by #55249
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Improve ClangCL compilation time on Windows. #55208

StefanStojanovic opened this issue Oct 1, 2024 · 1 comment · Fixed by #55249
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build Issues and PRs related to build files or the CI. windows Issues and PRs related to the Windows platform.

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StefanStojanovic commented Oct 1, 2024 •
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Version

main branch

Platform

Windows

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
@StefanStojanovic StefanStojanovic added windows Issues and PRs related to the Windows platform. build Issues and PRs related to build files or the CI. labels Oct 1, 2024
@StefanStojanovic StefanStojanovic self-assigned this Oct 2, 2024
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Forgot to self-assign yesterday. I'm working on it and should have a PR for it this week.

StefanStojanovic added a commit to JaneaSystems/node that referenced this issue Oct 3, 2024
@StefanStojanovic
build,win: enable pch for clang-cl
15bbc99 
Fixes: nodejs#55208
@StefanStojanovic StefanStojanovic mentioned this issue Oct 3, 2024
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nodejs-github-bot pushed a commit that referenced this issue Oct 11, 2024
@StefanStojanovic
build,win: enable pch for clang-cl
27f8d9e 
Fixes: #55208
PR-URL: #55249
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
louwers pushed a commit to louwers/node that referenced this issue Nov 2, 2024
@StefanStojanovic @louwers
build,win: enable pch for clang-cl
bc5e41e 
Fixes: nodejs#55208
PR-URL: nodejs#55249
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
tpoisseau pushed a commit to tpoisseau/node that referenced this issue Nov 21, 2024
@StefanStojanovic @tpoisseau
build,win: enable pch for clang-cl
683f348 
Fixes: nodejs#55208
PR-URL: nodejs#55249
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
ruyadorno pushed a commit that referenced this issue Nov 27, 2024
@StefanStojanovic @ruyadorno
build,win: enable pch for clang-cl
a21be02 
Fixes: #55208
PR-URL: #55249
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
marco-ippolito pushed a commit that referenced this issue Jan 22, 2025
@StefanStojanovic @marco-ippolito
build,win: enable pch for clang-cl
b63437c 
Fixes: #55208
PR-URL: #55249
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
marco-ippolito pushed a commit that referenced this issue Jan 24, 2025
@StefanStojanovic @marco-ippolito
build,win: enable pch for clang-cl
dc552c6 
Fixes: #55208
PR-URL: #55249
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
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build,win: enable pch for clang-cl JaneaSystems/node
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