alanzhao1 wrote:

> FYI this is causing Chrome X86 MacOS builds to fail due to `error: unknown 
> type name '__m512bh'`: https://crbug.com/378111077

As I mentioned in https://crbug.com/378111077#comment3, the issue is that we 
pull in avx512bf16intrin.h because `__SCE__` is not defined, but `__SSE2__` is 
also not defined, so we don't pull in the `typedef` for `__m512bh` (since 
they're guarded by macros that look for `__SSE2__`) and so on. We then pull in 
amxavx512intrin.h which was introduced in this PR which then fails to compile 
because we don't have the `typedef`s.

https://github.com/llvm/llvm-project/pull/114070
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