#93 BAT Lookup Speed-Up

Offloaded just about all of the work in BAT lookup to
pre-calculated values, calculated at the time the BAT
values change. Thus shortening the time to check a
BAT, and calculate a BAT significantly.

BAT address validation and calculation should be
significantly faster with this, as that is far more
common than BAT changes.

[Anonymous]

BAT Lookup Patch 2005-03-27

[Max Jakub Ried]

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I cannot apply this to the current altivec or normal CVS :(

[Alex Smith]

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This patch is hard to apply to altivec, due to differences
in ppc_cpu.h, although it is possible by manually editing
the files

[Max Jakub Ried]

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Is it senseful to apply them?

[Anonymous]

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It's not really worth patching in, because the speed up is
only over less than 1% of address calculations.

It's more so here, so people can review the code itself and
determine it to be correct first.