[m-rev.] diff: trail usage analysis of compiler generated special preds

[Ralph Becket]

Julien Fischer, Friday, 23 December 2005:
> 
> Estimated hours taken: 1
> Branches: main
> 
> Make the trail usage analysis less conservative with respect to compiler
> generated special predicates.  This increases the speed of a compiler built in
> hlc.gc.tr with --intermodule-optimzation and trail usage analysis by about
> 3.5% and decreases the executable size by 5.2%.

That looks fine.
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