Use attribute((target(sse4.2))) for SSE42 CRC32C

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

From: "Devulapalli, Raghuveer" <raghuveer.devulapalli@intel.com>

To: "pgsql-hackers@lists.postgresql.org" <pgsql-hackers@lists.postgresql.org>

Date: 2024-11-07T20:48:54Z

Lists: pgsql-hackers

Attachments

v1-0001-Use-__attribute__-target-sse4.2-for-SSE42-CRC32C.patch (application/octet-stream) patch v1-0001

Based on the discussion in PostgreSQL: Re: Proposal for Updating CRC32C with AVX-512 Algorithm.<https://www.postgresql.org/message-id/ZyziAXhsgfqakSI4%40nathan>, this patch leverages pg_attribute_target to build the SSE42 CRC32C code using function attributes.

Raghuveer

Commits

Use __attribute__((target(...))) for SSE4.2 CRC-32C support.
- 4b03a27fafc9 18.0 landed
Move check for USE_AVX512_POPCNT_WITH_RUNTIME_CHECK.
- 4225276e2540 18.0 landed
Remove MSVC scripts
- 1301c80b2167 17.0 cited