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

From: John David Anglin <dave dot anglin at bell dot net>
To: Uros Bizjak <ubizjak at gmail dot com>
Cc: GCC Development <gcc at gcc dot gnu dot org>, Andreas Schwab <schwab at linux-m68k dot org>, dave dot anglin at nrc-cnrc dot gc dot ca, Dave Miller <davem at redhat dot com>, Ulrich Weigand <uweigand at de dot ibm dot com>, David Edelsohn <dje dot gcc at gmail dot com>, kkojima at gcc dot gnu dot org
Date: Tue, 19 Jun 2012 14:20:16 -0400
Subject: Re: [Target maintainers]: Please update libjava/sysdep/*/locks.h with new atomic builtins
References: <CAFULd4aDxMhV_jr8BbkybJi2y2m5JPHLVVMZFYM5N1WEB6iTLQ@mail.gmail.com>

On 6/14/2012 5:41 AM, Uros Bizjak wrote:

I would like to point out that in libjava/sysdep/*/lockThe syncs.h many
targets still implement atomics in assembly. These utility functions
can be implemented with new atomic builtins, avoiding quite some
compexity.

This requires changes to the testsuite and user code to link against libatomic. So, I'm not sure this is an improvement.

The sync builtins aren't supported on hpux.

Dave

--
John David Anglin    dave.anglin@bell.net

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

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