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Re: [patch 3/N] std::regex refactoring - _Executor DFS / BFS
- From: Tim Shen <timshen91 at gmail dot com>
- To: Jonathan Wakely <jwakely at redhat dot com>
- Cc: "libstdc++" <libstdc++ at gcc dot gnu dot org>, gcc-patches <gcc-patches at gcc dot gnu dot org>
- Date: Mon, 28 Apr 2014 17:14:23 -0400
- Subject: Re: [patch 3/N] std::regex refactoring - _Executor DFS / BFS
- Authentication-results: sourceware.org; auth=none
- References: <20140428124003 dot GW928 at redhat dot com> <20140428144659 dot GY928 at redhat dot com> <CAPrifD=Bc4D63KJONG5d7YzX1t73HDm276AKPY5mEOZi942_EA at mail dot gmail dot com> <20140428165121 dot GB928 at redhat dot com> <CAPrifDnRhfm2pCDAN5fRs81g8m45u8Kt40n8NHXLmGJrh8aiOA at mail dot gmail dot com> <20140428191027 dot GD928 at redhat dot com> <CAPrifDnTP8CzJtvZ2kYLXt7+=bij9kHj7acArkHGst_MUsw4sw at mail dot gmail dot com> <20140428192950 dot GE928 at redhat dot com> <CAPrifDnLBbCzADcHZrMqFhQnbLUDLjq2Hv_EGoUqLeOXmoep0Q at mail dot gmail dot com> <20140428201853 dot GG928 at redhat dot com>
On Mon, Apr 28, 2014 at 4:18 PM, Jonathan Wakely <jwakely@redhat.com> wrote:
> I thought I'd make a 5x speedup to the run-time of the regex matching,
> but I was comparing the wrong version and the improvement actually
> came from one of your patches yesterday - maybe this one:
> http://gcc.gnu.org/ml/gcc-patches/2014-04/msg01725.html
>
> Nice work!
That's surprising. May I ask for the performance testcase?
> My changes don't seem to make anything worse, and the first one makes
> a big improvement to the worst case performance of std::wregex.
Glad to see that!
Thanks!
--
Regards,
Tim Shen