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Article #12527Re: Swap byte instruction - how high is the win?
From: Vernon Schryver
Date: Sun, 10 Jan 1993 05:56
Date: Sun, 10 Jan 1993 05:56
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In article <willmore.726621153@class1.iastate.edu>, willmore@iastate.edu (David Willmore) writes: > ... > This makes the whole issue of NextStep 486 strange. If the purported > reason that NextStep is only supported for the 486 is to sell more 486's > then why don't they sell a 386 version with all the bswap's replaced by > the long and slow series of 386 instructions which it takes to emulate > it?.... The sequence of 3 386 instructions for byte-swapping EAX is not very long or slow, especially in view of its likely frequency. Vernon Schryver, vjs@sgi.com
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Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!sgigate!sgi!rhyolite!vjs From: vjs@rhyolite.wpd.sgi.com (Vernon Schryver) Newsgroups: comp.arch Subject: Re: Swap byte instruction - how high is the win? Message-ID: <umg4hu8@rhyolite.wpd.sgi.com> Date: 10 Jan 93 05:56:50 GMT References: <1993Jan7.074052.19620@qb.rhein-main.de> <willmore.726621153@class1.iastate.edu> Organization: Silicon Graphics, Inc. Mountain View, CA Lines: 14