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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](21-03.html) [Table of Contents](index.html) [Next](21-05.html)
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The first, obvious thing we can do to Listing 21.1 is change **ADC
AX,0** to **ADC EAX,0**, eliminating a prefix byte and saving a full
cycle. Now we're down from five to four cycles. What next?
@ -138,11 +134,3 @@ code: three cycles per loop, or 1.5 cycles per checksummed word, more
than three times the speed of the original code. Again, note that the
actual order in which the instructions are arranged is dictated by the
various optimization hazards of the Pentium.
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[Previous](21-03.html) [Table of Contents](index.html) [Next](21-05.html)
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* * * * *
Graphics Programming Black Book © 2001 Michael Abrash