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Re: incremental compiler project

From: Jeff Law <law at redhat dot com>
To: David Kunsman <dmkunsman at gmail dot com>, Tom Tromey <tom at tromey dot com>
Cc: Manuel LÃpez-IbÃÃez <lopezibanez at gmail dot com>, GCC Development <gcc at gcc dot gnu dot org>
Date: Fri, 4 Sep 2015 09:44:14 -0600
Subject: Re: incremental compiler project
Authentication-results: sourceware.org; auth=none
References: <CAPVyUPD0eAyAuPOktpjqpY=UKx0t2YEvFQxMUMY2Lv2pwUAjLA at mail dot gmail dot com> <55E87708 dot 7010901 at gmail dot com> <87twrap6c2 dot fsf at tromey dot com> <CAPVyUPDX9YiCSp8WjafmuYpwAqx4jt-2r_7U4XXO4Zg_HmuzgQ at mail dot gmail dot com>

On 09/04/2015 09:40 AM, David Kunsman wrote:

what do you think about the sub project in the wiki:

Parallel Compilation:

One approach is to make the front end multi-threaded. (I've pretty
much abandoned this idea. There are too many mutable tree fields,
making this a difficult project. Also, threads do not interact well
with fork, which is currently needed by the code generation approach.)

You should get in contact with David Malcolm as these issues aredirectly related to his JIT work.


This will entail removing most global variables, marking some with
__thread, and wrapping a few with locks.

Yes, but that's work that is already in progress. Right now David's gota big log and context switch in place, but we really want to drive downthe amount of stuff in that context switch.



Jeff

Follow-Ups:
- Re: incremental compiler project
  - From: Manuel LÃpez-IbÃÃez
- Re: incremental compiler project
  - From: David Malcolm

References:
- incremental compiler project
  - From: David Kunsman
- Re: incremental compiler project
  - From: Manuel LÃpez-IbÃÃez
- Re: incremental compiler project
  - From: Tom Tromey
- Re: incremental compiler project
  - From: David Kunsman

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