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Re: [Target maintainers]: Please update libjava/sysdep/*/locks.h with new atomic builtins

From: David Edelsohn <dje dot gcc at gmail dot com>
To: Andreas Krebbel <krebbel at linux dot vnet dot ibm dot com>
Cc: Uros Bizjak <ubizjak at gmail dot com>, GCC Development <gcc at gcc dot gnu dot org>
Date: Fri, 15 Jun 2012 10:07:27 -0400
Subject: Re: [Target maintainers]: Please update libjava/sysdep/*/locks.h with new atomic builtins
References: <CAFULd4aDxMhV_jr8BbkybJi2y2m5JPHLVVMZFYM5N1WEB6iTLQ@mail.gmail.com> <4FDAE512.5010402@linux.vnet.ibm.com>

On Fri, Jun 15, 2012 at 3:32 AM, Andreas Krebbel
<krebbel@linux.vnet.ibm.com> wrote:

> If all targets have been migrated the files probably could be merged?!

Yes, it looks like most targets could use a generic implementation,
but the generic implementation should be based on the __atomic
intrinsics, not the __sync intrinsics, because the latter always uses
strict memory model semantics although the locks allow weaker
semantics.

- David

References:
- [Target maintainers]: Please update libjava/sysdep/*/locks.h with new atomic builtins
  - From: Uros Bizjak
- Re: [Target maintainers]: Please update libjava/sysdep/*/locks.h with new atomic builtins
  - From: Andreas Krebbel

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