tree 678353e07565cf383105b1a105eb044e0f966ac2
parent bbb5c321021d019c0a6e3ed899dfcde9b00c63d4
author Gerda Zsejke More <gerdazsejke.more@arm.com> 1669302394 +0100
committer James Zern <jzern@google.com> 1671134486 +0000

Count down in Neon sum square loops

Counting down and terminating on a zero comparison allows us
to use flag-setting arithmetic instructions, avoiding
an additional CMP instruction before the conditional branch.
This doesn't really affect performance but code size is reduced
by a useful amount since loop prologues are also shorter.

Change-Id: Id623b28f804198ea6bf36361933bef8f17baec84