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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