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Message-ID: <alpine.LNX.2.20.13.1706182201560.21867@monopod.intra.ispras.ru>
Date: Sun, 18 Jun 2017 22:05:59 +0300 (MSK)
From: Alexander Monakov <amonakov@...ras.ru>
To: musl@...ts.openwall.com
Subject: Re: [PATCH] fix arm run-time abi string functions
On Sun, 18 Jun 2017, Szabolcs Nagy wrote:
> > here it's possible to hoist and deduplicate 'cmp r2, #0; bxeq lr' by placing it
> > prior to the direction check.
> >
>
> i dont think there is a difference
> (either way, both functions need to do this cmp once,
> the executed insns are the same you just changed the
> ordering a bit)
I was pointing that out as a size optimization, but depending on alignment
of the following code it might be pointless indeed.
Alexander
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