[climacs-devel] cached grammar

[Christophe Rhodes]

Hi,

Is the attached what you (Robert) were thinking of for cacheing some
portions of HANDLE-ITEM?

If so, well, here it is, along with an optimization to ITEM-EQUAL.
Unfortunately, it's still too slow -- in the attached prolog file in
Prolog Syntax, typing in the comment at the top of the buffer has
noticeable lag on my 2.8GHz x86.  About 50% of the time is spent in
HANDLE-ITEM and callees, according to sb-sprof, of which about half is
in ITEM-EQUAL.

Any ideas?  (Can other people reproduce this kind of performance
characteristic, for one?)  Is it possible that the grammar is in some
way badly formed, and is there a way of checking this automatically?

Cheers,

Christophe

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