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Re: [RFC] Remove -freorder-blocks-and-partition

From: Taras Glek <tglek at mozilla dot com>
To: Jan Hubicka <hubicka at ucw dot cz>
Cc: Xinliang David Li <davidxl at google dot com>, Paolo Bonzini <bonzini at gnu dot org>, Richard Henderson <rth at redhat dot com>, "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
Date: Thu, 04 Aug 2011 09:02:55 -0700
Subject: Re: [RFC] Remove -freorder-blocks-and-partition
References: <4E25F810.6050904@redhat.com> <CAAkRFZJHvze3gyd6xxLV3KVeDsgfacA-AV-gL6TkvOFYey4f=g@mail.gmail.com> <4E2D4425.9040104@gnu.org> <CAAkRFZLK8GsbVAbproRrfSF4ZwL-c3uhReMnVQwGW9bsWCww7A@mail.gmail.com> <20110803210614.GE22893@atrey.karlin.mff.cuni.cz> <CAAkRFZKq_BDo4bA3nVOQwPtns_38pMQ0J0tzdRk1gV9hjuj4ug@mail.gmail.com> <20110804133922.GD12248@kam.mff.cuni.cz>

On 08/04/2011 06:39 AM, Jan Hubicka wrote:

Also on the oriignal topic, Iknow that Mozlla folks experimented with this
switch (and I do expect it should make noticeable reducion in the hot section
footprint that is important for them). They are not using it at the moment
because of problems with their bug reporting tool not being able to do unwind
info for split functions.

Taras, do you have any data if the partitioning helps?
Honza

Currently it does not help. I believe it has potential since we have a lot of large methods where only a small part of them gets run.

Taras

References:
- Re: [RFC] Remove -freorder-blocks-and-partition
  - From: Jan Hubicka
- Re: [RFC] Remove -freorder-blocks-and-partition
  - From: Xinliang David Li
- Re: [RFC] Remove -freorder-blocks-and-partition
  - From: Jan Hubicka

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