RE: Popcount optimization using AVX512 - Mailing list pgsql-hackers

From Amonson, Paul D
Subject RE: Popcount optimization using AVX512
Date
Msg-id BL1PR11MB5304217FFEFB15124CD2EC9EDC3B2@BL1PR11MB5304.namprd11.prod.outlook.com
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In response to RE: Popcount optimization using AVX512  ("Amonson, Paul D" <paul.d.amonson@intel.com>)
Responses Re: Popcount optimization using AVX512
List pgsql-hackers
> -----Original Message-----
> From: Amonson, Paul D <paul.d.amonson@intel.com>
> Sent: Thursday, March 28, 2024 3:03 PM
> To: Nathan Bossart <nathandbossart@gmail.com>
> ...
> I will review the new patch to see if there are anything that jumps out at me.

I see in the meson.build you added the new file twice?

@@ -7,6 +7,7 @@ pgport_sources = [
   'noblock.c',
   'path.c',
   'pg_bitutils.c',
+  'pg_popcount_avx512.c',
   'pg_strong_random.c',
   'pgcheckdir.c',
   'pgmkdirp.c',
@@ -84,6 +85,7 @@ replace_funcs_pos = [
   ['pg_crc32c_sse42', 'USE_SSE42_CRC32C_WITH_RUNTIME_CHECK', 'crc'],
   ['pg_crc32c_sse42_choose', 'USE_SSE42_CRC32C_WITH_RUNTIME_CHECK'],
   ['pg_crc32c_sb8', 'USE_SSE42_CRC32C_WITH_RUNTIME_CHECK'],
+  ['pg_popcount_avx512', 'USE_AVX512_POPCNT_WITH_RUNTIME_CHECK', 'avx512_popcnt'],

I was putting the file with special flags ONLY in the second section and all seemed to work. :)

Everything else seems good to me.

Thanks,
Paul




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