GNU bug report logs - #17576
[PATCH] dfa: speed-up at initial state

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Package: grep;

Reported by: Norihiro Tanaka <noritnk <at> kcn.ne.jp>

Date: Sat, 24 May 2014 03:33:01 UTC

Severity: normal

Tags: patch

Done: Paul Eggert <eggert <at> cs.ucla.edu>

Bug is archived. No further changes may be made.

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Message #29 received at 17576 <at> debbugs.gnu.org (full text, mbox):

From: Norihiro Tanaka <noritnk <at> kcn.ne.jp>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 17576 <at> debbugs.gnu.org
Subject: Re: [PATCH] dfa: speed-up at initial state
Date: Fri, 30 May 2014 20:40:08 +0900

Paul Eggert wrote:
> I don't think we need to complicate the code to improve optimization
> with older compilers.

Thanks for the confirmation.  Two results of last are with not GCC 4.4.7
but GCC 4.8.2 after applying second patch.  The test case "k" is 50%
faster and "l" is also about 16% faster with GCC 4.8.2 on my platform by
two changes.
This bug report was last modified 10 years and 317 days ago.

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