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James Gregory 2013-12-30 20:26:41 +11:00
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@ -1,7 +1,3 @@
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[Previous](13-02.html) [Table of Contents](index.html) [Next](13-04.html)
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On the 386, **ROR** was the only way to split a 32-bit register into two
16-bit registers. On the 486, however, **BSWAP** can not only do the
job, but can do it better, because **BSWAP** executes in just one cycle.
@ -102,12 +98,4 @@ slow. But if you're optimizing for the 486, these tidbits can save a few
critical cycles—and Lord knows that if you're optimizing for the
486—that is, if you need even more performance than you get from
unoptimized code on a 486—you almost certainly need all the speed you
can get.
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[Previous](13-02.html) [Table of Contents](index.html) [Next](13-04.html)
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* * * * *
Graphics Programming Black Book © 2001 Michael Abrash
can get.