Re: delayed branch (time to plug the ARM again ...;-)

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Article #1772

#1772

From: John
Date: Mon, 07 Aug 1989 15:24

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In article <PAUL@marvin.moncam.co.uk> paul@moncam.co.uk (Paul Hudson) writes:
>For some reason known only to the designers, the ARM doesnt have a
>delayed branch slot (blowing away the pipeline instead). What it does
>have is conditional execution of every instruction ...

I believe it's because the ARMs designers are all assembly code freaks and
didn't like the idea of having to do all that reordering by hand. Something of
a copout!

>... IMHO, they should have had a delay slot too, though.

Yes, it would have added another few % of performance at no cost (except to
the mental health of Roger Wilson).

>--
>Paul Hudson	These opinions void where prohibited by law.

John Cupitt

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From: jrc@ukc.ac.uk (John)
Newsgroups: comp.arch
Subject: Re: delayed branch (time to plug the ARM again ...;-)
Message-ID: <1986@harrier.ukc.ac.uk>
Date: 7 Aug 89 15:24:42 GMT
Reply-To: jrc@ukc.ac.uk (John)
Organization: Computing Lab, University of Kent at Canterbury, UK.
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