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The guidelines presented here fairly general but with a Delphi specific
focus. Additionally the focus is on modern Intel CPUs (Pentium and
Pentium II). Other CPUs, for instance the AMD K6-2 and later, may
also be good choices and may benefit from the optimizations listed
here. However, they are not as well documented publicly so it is difficult
to know for sure.
The guidelines fall into two general types: 1) coding styles and
2) specific optimization techniques. When writing code, it is common
for there to be multiple ways to proceed. Some of these ways generally
tend to result in faster code. You might call it passive optimization.
This is the "coding style" type of optimization. However,
for those specific routines that are performance bottlenecks this
is often not sufficient. In these cases you need to actively optimize
the routine. The guidelines that fall into this group are of the second
type, "optimization techniques". Additionally, they are
divided into functional groups:
Note: that all the techniques presented here assume that optimizations
are ON. (Obvious, but needs to be said nonetheless.)
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