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Re: Selective scheduling and its usage
- From: Jeff Law <law at redhat dot com>
- To: Eric Botcazou <ebotcazou at adacore dot com>, Martin Liška <mliska at suse dot cz>
- Cc: gcc at gcc dot gnu dot org, amonakov at ispras dot ru, abel at ispras dot ru, Jakub Jelinek <jakub at redhat dot com>
- Date: Thu, 29 Mar 2018 09:14:31 -0600
- Subject: Re: Selective scheduling and its usage
- References: <47107168-05ec-25b6-d2d9-be1dfcf0811e@suse.cz> <1896976.h1cWcUzf4a@polaris>
On 03/29/2018 04:15 AM, Eric Botcazou wrote:
>> I noticed there are quite many selective scheduling PRs:
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84872
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84842
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84659
>>
>> and many others.
>
> Right, and some of them are P1/P2, which doesn't really make sense IMO.
I'm of the opinion we should deprecate the selective scheduler. IA64
is a don't care and while it works on other targets, I don't think it's
getting significant use in the wild -- and it's a significant
maintenance burden release to release.
I haven't pushed much on it because I'm slammed with a ton of other
stuff, but I just don't see that selective-scheduling on the right side
of the cost/benefit analysis.
jeff