Re: Decrement And Branch

Liste des GroupesRevenir à c arch 
Sujet : Re: Decrement And Branch
De : mitchalsup (at) *nospam* aol.com (MitchAlsup1)
Groupes : comp.arch
Date : 16. Aug 2024, 19:40:23
Autres entêtes
Organisation : Rocksolid Light
Message-ID : <78280e8b4a8c3d79eee2ab421724868a@www.novabbs.org>
References : 1 2
User-Agent : Rocksolid Light
On Fri, 16 Aug 2024 10:54:43 +0000, quadibloc wrote:

But if it's programmed in a higher-level language, usually what a loop
construct does is not the same as what a loop instruction does, so the
instruction is not used.
I designed My 66000 LOOP instructions to cover 3 main cases::
a) std iterated loop where iteration can be + or -, constant or
register, and comparison can be any of the 10 integer CMPs
against a constant or register.
b) std early out iterated loop:: strncpy()
c) both
These LOOPs come with different execution semantics of the insts
inside::
a) Cache allocation is relaxed when the loop is "long enough"
   so that vector strip-mines do not erase the current cache
   footprint.
b) Multiple iterations can be performed simultaneously (SIMD)
c) The width of execution is primarily the width of the cache
   port(s) not the register ports.

Date Sujet#  Auteur
13 Aug 24 * Decrement And Branch24Lawrence D'Oliveiro
13 Aug 24 +* Re: Decrement And Branch2Anton Ertl
13 Aug 24 i`- Re: Decrement And Branch1MitchAlsup1
13 Aug 24 +- Re: Decrement And Branch1MitchAlsup1
14 Aug 24 +* Re: Decrement And Branch18Lawrence D'Oliveiro
14 Aug 24 i+* Re: Decrement And Branch3MitchAlsup1
14 Aug 24 ii`* Re: Decrement And Branch2Lawrence D'Oliveiro
15 Aug 24 ii `- Re: Decrement And Branch1MitchAlsup1
14 Aug 24 i`* Re: Decrement And Branch14Anton Ertl
15 Aug 24 i +* Re: Decrement And Branch4Lawrence D'Oliveiro
15 Aug 24 i i+- Re: Decrement And Branch1MitchAlsup1
15 Aug 24 i i`* Re: Decrement And Branch2Anton Ertl
16 Aug 24 i i `- Re: Decrement And Branch1Lawrence D'Oliveiro
15 Aug 24 i `* Re: Decrement And Branch9MitchAlsup1
15 Aug 24 i  `* Re: Decrement And Branch8Anton Ertl
15 Aug 24 i   +* Re: Decrement And Branch5MitchAlsup1
16 Aug 24 i   i`* Instruction counts (was: Decrement And Branch)4Anton Ertl
16 Aug 24 i   i +* Re: Instruction counts (was: Decrement And Branch)2Lawrence D'Oliveiro
16 Aug 24 i   i i`- Re: Instruction counts (was: Decrement And Branch)1Anton Ertl
16 Aug 24 i   i `- Re: Instruction counts1MitchAlsup1
15 Aug 24 i   +- Re: Decrement And Branch1MitchAlsup1
9 Sep 24 i   `- Re: Decrement And Branch1Kent Dickey
16 Aug 24 `* Re: Decrement And Branch2quadibloc
16 Aug 24  `- Re: Decrement And Branch1MitchAlsup1

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