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Re: slow bison run

From: Paul Eggert
Subject: Re: slow bison run
Date: Mon, 16 May 2005 16:18:06 -0700
User-agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.4 (gnu/linux)

Stan Cox <address@hidden> writes:

> The m4 version of bison is much slower with this file than the cpp version.
> It looks like most of the additional time is spent in m4.

Yes, the current version of Bison is way, way too slow for large
grammars.  (Your grammar took 90 seconds for Bison to process on my
2.4 GHz Pentium 4 box.)  Fixing this is on my long list of things to do.

In the mean time you should consider installing the latest version of
GNU m4, as it's a bit faster.

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