From: Stuart Henderson <stu@spacehopper.org>
Subject: Re: clang: enable blake3 asm optimizations on amd64?
To: Christian Weisgerber <naddy@mips.inka.de>
Cc: tech@openbsd.org
Date: Sun, 18 Feb 2024 09:25:38 +0000

On 2024/02/17 20:59, Christian Weisgerber wrote:
> From some cursory grepping, I don't think BLAKE3 is used much if
> at all in clang.  So I don't know if this buys us anything.  It
> does not reduce the time required by clang to compile itself.

Any idea how to make sure that this code is exercised?

> +.if ${MACHINE_ARCH} == "amd64"
> +SRCS+=	blake3_sse2_x86-64_unix.S \
> +	blake3_sse41_x86-64_unix.S \
> +	blake3_avx2_x86-64_unix.S \
> +	blake3_avx512_x86-64_unix.S
> +.endif

I have a suspicion that AVX512 might not work with OpenBSD.
We've had a diagnosed problem with this in node, and now a suspected
one in GHC.