New blog post: "LLVM: The bad parts"
https://www.npopov.com/2026/01/11/LLVM-The-bad-parts.html
I had some fun writing this :)
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Nikita Popov
@nikic@mastodon.social
mastodon 4.8.0-nightly.2026-10-06LLVM toolchain engineer at Red Hat. Open source contributor, mainly LLVM / Rust / PHP.
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Joined October 22, 2023
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@mattpd@mastodon.social @neilhenning@mastodon.gamedev.place Yeah, improving extension points so that there is less need for forking is definitely a good way to improve the situation.
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@camelcdr@tech.lgbt SPIRV is GlobalISel-only and AArch64 uses GlobalISel for unoptimized builds.
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@dzaima@mastodon.social It would have been more accurate to say that the *default* ABI should be per-module. If a call wants to use a different one, it should use an explicit calling convention (which does not mean it has to be user-specified, it can be compiler-inferred.) So basically there's just a bunch of different CCs, and a per-module choice of what the default CC is.