CVS commit: src/sys/crypto/chacha/arch/arm

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Mon Jul 27 20:58:07 UTC 2020

Modified Files:
        src/sys/crypto/chacha/arch/arm: arm_neon.h chacha_neon.c

Log Message:
Take advantage of REV32 and TBL for 16-bit and 8-bit rotations.

However, disable use of (V)TBL on armv7/aarch32 for now, because for
some reason GCC spills things to the stack despite having plenty of
free registers, which hurts performance more than it helps at least
on ARM Cortex-A8.


To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/sys/crypto/chacha/arch/arm/arm_neon.h
cvs rdiff -u -r1.3 -r1.4 src/sys/crypto/chacha/arch/arm/chacha_neon.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.