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[v3] Fix PR 54754: use atomic built-ins for libstdc++ parallel mode

From: Jonathan Wakely <jwakely dot gcc at gmail dot com>
To: "libstdc++" <libstdc++ at gcc dot gnu dot org>, gcc-patches <gcc-patches at gcc dot gnu dot org>
Date: Tue, 9 Oct 2012 09:16:55 +0100
Subject: [v3] Fix PR 54754: use atomic built-ins for libstdc++ parallel mode

2012-10-09  Jonathan Wakely  <jwakely.gcc@gmail.com>

        PR libstdc++/54754
        * include/parallel/compatibility.h: Use atomic built-ins when they are
        lock-free.

Tested x86_64-linux, i386-linux, powerpc64-linux.  There are some
time-outs when running the 'check-parallel' testsuite on ppc64 which
can be investigated later.

Committed to trunk.

Attachment: patch.txt
Description: Text document

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