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Re: Optimization of conditional access to globals: thread-unsafe?

From: Samuel Tardieu <sam at rfc1149 dot net>
To: Florian Weimer <fw at deneb dot enyo dot de>
Cc: Robert Dewar <dewar at adacore dot com>, Andrew Haley <aph-gcc at littlepinkcloud dot COM>, Bart Van Assche <bart dot vanassche at gmail dot com>, gcc at gcc dot gnu dot org, Andrew Pinski <pinskia at gmail dot com>, Tomash Brechko <tomash dot brechko at gmail dot com>
Date: Sat, 27 Oct 2007 15:48:56 +0200
Subject: Re: Optimization of conditional access to globals: thread-unsafe?
References: <e2e108260710260634q7a291337s6e66dfa25f28b68a@mail.gmail.com> <e2e108260710260705s170a7c82udb0c9db26a408d84@mail.gmail.com> <18210.795.425145.46885@zebedee.pink> <47220475.4000703@adacore.com> <2007-10-26-17-59-37+trackit+sam@rfc1149.net> <4722F361.7050302@adacore.com> <871wbgof5f.fsf@mid.deneb.enyo.de>

On 27/10, Florian Weimer wrote:

| (I can't reproduce the conditional store with my GCC 4.2 installation,
| though.)

You need "-O -fno-inline" to trigger it on this particular example
(you don't need "-fno-inline" if you put "Lock" in a separate package).

Follow-Ups:
- Re: Optimization of conditional access to globals: thread-unsafe?
  - From: Florian Weimer

References:
- Re: Optimization of conditional access to globals: thread-unsafe?
  - From: Bart Van Assche
- Re: Optimization of conditional access to globals: thread-unsafe?
  - From: Andrew Haley
- Re: Optimization of conditional access to globals: thread-unsafe?
  - From: Robert Dewar
- Re: Optimization of conditional access to globals: thread-unsafe?
  - From: Samuel Tardieu
- Re: Optimization of conditional access to globals: thread-unsafe?
  - From: Robert Dewar
- Re: Optimization of conditional access to globals: thread-unsafe?
  - From: Florian Weimer

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