Re: Another regexp performance improvement: skip useless paren-captures

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Mark Dilger <mark(dot)dilger(at)enterprisedb(dot)com>
Cc: Andrew Dunstan <andrew(at)dunslane(dot)net>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Joel Jacobson <joel(at)compiler(dot)org>
Subject: Re: Another regexp performance improvement: skip useless paren-captures
Date: 2021-08-24 18:29:01
Message-ID: 354913.1629829741@sss.pgh.pa.us
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Mark Dilger <mark(dot)dilger(at)enterprisedb(dot)com> writes:
> I've beaten on this with random patterns and it seems to hold up just fine. I have also reviewed the diffs and, for the patterns where the output changes, everything looks correct. I can't find anything wrong with this patch.

Thanks for testing! I'll push it in a bit.

regards, tom lane

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