From: Paolo Bonzini <bonzini@gnu.org>
To: Andrew Haley <aph@redhat.com>
Cc: "Joseph S. Myers" <joseph@codesourcery.com>,
java-patches@gcc.gnu.org,
Gcc Patch List <gcc-patches@gcc.gnu.org>
Subject: Re: Java: add flag_use_atomic_builtins
Date: Wed, 12 Aug 2009 16:57:00 -0000 [thread overview]
Message-ID: <4A82F47A.7060708@gnu.org> (raw)
In-Reply-To: <4A82F34B.2080404@redhat.com>
On 08/12/2009 06:52 PM, Andrew Haley wrote:
> Joseph S. Myers wrote:
>> On Wed, 12 Aug 2009, Andrew Haley wrote:
>>
>>> Some targets, particularly ARM, don't have instructions for things
>>> such as sync_compare_and_swap. Instead, a routine in libgcc is
>>> used. This patch adds a new gcj option, -fuse-atomic-builtins,
>>> which causes gcj to use the routines in libgcc whenever atomic
>>> operations are needed.
>> Wouldn't a target hook to allow a target to declare which operations it
>> provides in libgcc be better than a command-line option?
>
> Maybe it would. I'm happy to work with anyone to create such a
> thing. What would such a hook look like, and how would a front-
> end use it?
Couldn't optabs be (re)used?
Paolo
next prev parent reply other threads:[~2009-08-12 16:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-12 16:09 Andrew Haley
2009-08-12 16:49 ` Joseph S. Myers
2009-08-12 16:54 ` Andrew Haley
2009-08-12 16:57 ` Paolo Bonzini [this message]
2009-08-12 17:05 ` Andrew Haley
2009-08-12 17:17 ` Andrew Haley
2009-08-12 18:08 ` Boehm, Hans
2009-08-12 18:25 ` Boehm, Hans
2009-08-12 18:27 ` Richard Guenther
2009-08-12 19:00 ` David Daney
2009-08-12 18:08 ` Paolo Bonzini
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