Horton

RE: Use __attribute__((target(sse4.2))) for SSE42 CRC32C

Devulapalli, Raghuveer <raghuveer.devulapalli@intel.com>

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From: "Devulapalli, Raghuveer" <raghuveer.devulapalli@intel.com>
To: Nathan Bossart <nathandbossart@gmail.com>
Cc: "pgsql-hackers@lists.postgresql.org" <pgsql-hackers@lists.postgresql.org>, "Shankaran, Akash" <akash.shankaran@intel.com>
Date: 2024-11-08T18:43:12Z
Lists: pgsql-hackers 
> I believe we expect MSVC builds to use meson at this point, which is probably
> why there's this extra check:
> 
>   if cc.get_id() == 'msvc'
>     cdata.set('USE_SSE42_CRC32C', false)
>     cdata.set('USE_SSE42_CRC32C_WITH_RUNTIME_CHECK', 1)
>     have_optimized_crc = true
> 

Ah, I missed this. This makes sense.

Commits

  1. Use __attribute__((target(...))) for SSE4.2 CRC-32C support.

  2. Move check for USE_AVX512_POPCNT_WITH_RUNTIME_CHECK.

  3. Remove MSVC scripts