Properly fix AVX-512 CRC calculation bug The problem that led to the workaround in f83f14881c7 was not in fact a compiler bug, but a failure to zero the upper bits of the vector register containing the initial scalar CRC value. Fix that and revert the workaround.
Diagnosed-by: Nathan Bossart <nathandboss...@gmail.com> Diagnosed-by: Raghuveer Devulapalli <raghuveer.devulapa...@intel.com> Tested-by: Andy Fan <zhihuifan1...@163.com> Tested-by: Soumyadeep Chakraborty <soumyadeep2...@gmail.com> Reviewed-by: Nathan Bossart <nathandboss...@gmail.com> Reviewed-by: Raghuveer Devulapalli <raghuveer.devulapa...@intel.com> Discussion: https://postgr.es/m/ph8pr11mb82866b07aa6758d12f699c00fb...@ph8pr11mb8286.namprd11.prod.outlook.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/43da394304fba820830da2cef2c0214fe292c037 Modified Files -------------- src/port/pg_crc32c_sse42.c | 2 +- src/port/pg_crc32c_sse42_choose.c | 4 +--- 2 files changed, 2 insertions(+), 4 deletions(-)
