Horton

Improve our method for probing the availability of ARM CRC instructions.

Tom Lane <tgl@sss.pgh.pa.us>

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Commit: 1c72ec6f498945eb5981cdedd448aec3977477c8
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2018-05-02T22:06:43Z
Releases: 11.0 
Improve our method for probing the availability of ARM CRC instructions.

Instead of depending on glibc's getauxval() function, just try to execute
the CRC code, and trap SIGILL if that happens.

Thomas Munro

Discussion: https://postgr.es/m/HE1PR0801MB1323D171938EABC04FFE7FA9E3110@HE1PR0801MB1323.eurprd08.prod.outlook.com

Files

PathChange+/−
configure modified +2 −43
configure.in modified +2 −19
src/include/pg_config.h.in modified +0 −3
src/port/pg_crc32c_armv8_choose.c modified +25 −8

Discussion