Re: Proposal for enabling auto-vectorization for checksum calculations

On Fri, May 23, 2025 at 4:54 AM Matthew Sterrett
<matthewsterrett2@gmail.com> wrote:
> Okay, I've determined that versions of LLVM/Clang before 19 crash when
> compiling this patch for some reason; it seems that both make
> check-world and make install will crash with the affected LLVM
> versions.
> Unfortunately, what matters seems to be the version of the linker/LTO
> optimizer, which I don't think we can check at compile time.
> I added a check for Clang>=19 which works at preventing the crash on my system.
> I think it's possible some unusual combination of clang/LLVM might
> still crash during the build, but I think this is a reasonable
> solution

I don't know if this is related to the crashes, but it doesn't seem
like a good idea to #include the function pointer stuff everywhere,
that should probably go into src/port like the others.

--
John Naylor
Amazon Web Services