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Re: hasher speed traits
- From: Jonathan Wakely <jwakely dot gcc at gmail dot com>
- To: François Dumont <frs dot dumont at gmail dot com>
- Cc: "libstdc++ at gcc dot gnu dot org" <libstdc++ at gcc dot gnu dot org>, gcc-patches <gcc-patches at gcc dot gnu dot org>
- Date: Sun, 3 Feb 2013 21:03:48 +0000
- Subject: Re: hasher speed traits
- References: <510D8BE2.3020105@gmail.com>
On 2 February 2013 21:57, François Dumont wrote:
> Hi
>
> Here is the last patch I can think of for 4.8. Thanks to it default
> performance reported in performance/23_containers/insert/54075.cc and
> performance/23_containers/insert_erase/41975.cc are always the best:
Excellent.
> Ok to commit ?
Yes, thanks for all your work on this.
As Benjamin suggested, we should think about which changes are
user-visible and worth documenting in the GCC 4.8 release notes.
We should certainly note somewhere that it's important for the hash
function to be noexcept to avoid decreased performance.