3 commits

Author	SHA1	Message	Date
Andrew Turner	0ec3e99111	Use '.arch_extension crc' in the arm64 crc32 code ... We don't care about the base architecture here, just that the crc extension is enabled. Sponsored by: Innovate UK	2021-05-06 07:42:35 +00:00
Ed Maste	c2aa86d19c	arm64: add ".arch armv8-a+crc" to allow use of crc instructions ... With Clang 5.0 the .arch directive is required, otherwise Clang complains "error: instruction requires: crc". This was reported in D10499 but not added initially, because clang 3.8 available on a ref machine reported unknown directive. Clang 4.0 allows but does not require the directive. Submitted by: andrew MFC after: 1 week Sponsored by: The FreeBSD Foundation	2017-06-08 20:06:09 +00:00
Michael Tuexen	d7f27102b5	armv8 has support for optional CRC32C instructions. This patch checks if they are ... available and if that is true make use of them. Thank you very much to Andrew Turner for providing help and review the patch! Reviewed by: andrew MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D10499	2017-04-27 17:53:05 +00:00