This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: -fno-tree-cselim not working?

From: "Andrew Pinski" <pinskia at gmail dot com>
To: "Samuel Tardieu" <sam at rfc1149 dot net>
Cc: gcc at gcc dot gnu dot org
Date: Thu, 25 Oct 2007 03:19:48 -0700
Subject: Re: -fno-tree-cselim not working?
References: <87myu7zf9a.fsf@willow.rfc1149.net> <de8d50360710250310r6f600a30i7a9cdc1a1220dd2e@mail.gmail.com> <2007-10-25-12-13-49+trackit+sam@rfc1149.net>

On 10/25/07, Samuel Tardieu <sam@rfc1149.net> wrote:
> Is there any way to turn it off (other than using -O0) (see current
> thread-safeness discussion)?

 -fno-if-conversion -fno-if-conversion2

>
> It looks like this particular optimization is duplicated, as the comment
> in tree-ssa-phiopt.c exactly describes what happens here:

Yes it is duplicated.  And it is not a new problem, if conversion has
been with GCC since the 2.95 days so I don't understand why it is only
being brought up now (except threading programming is becoming more
popular).  And really I still say these are thread safe, just not the
way you think of them being thread safe.

-- Pinski

Follow-Ups:
- Re: -fno-tree-cselim not working?
  - From: Ian Lance Taylor
- Re: -fno-tree-cselim not working?
  - From: Florian Weimer

References:
- -fno-tree-cselim not working?
  - From: Samuel Tardieu
- Re: -fno-tree-cselim not working?
  - From: Andrew Pinski
- Re: -fno-tree-cselim not working?
  - From: Samuel Tardieu

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]