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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/94622] testsuite/gcc.dg/atomic/c11-atomic-exec-1.c fails
 on powerpc64le with -mpcrel
Date: Wed, 22 Apr 2020 17:20:14 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94622

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Aaron Sawdey <acsawdey@gcc.gnu.org>:

https://gcc.gnu.org/g:3bcdb5dec72b6d7b197821c2b814bc9fc07f4628

commit r10-7889-g3bcdb5dec72b6d7b197821c2b814bc9fc07f4628
Author: Aaron Sawdey <acsawdey@linux.ibm.com>
Date:   Mon Apr 20 13:01:43 2020 -0500

    Use plq/pstq for atomic_{load,store}<mode>

    For future architecture with prefix instructions, always use plq/pstq
    rather than lq/stq for atomic load of quadword. Then we never have to
    do the doubleword swap on little endian. Before this fix, -mno-pcrel
    would generate lq with the doubleword swap (which was ok) and -mpcrel
    would generate plq, also with the doubleword swap, which was wrong.

    2020-04-20  Aaron Sawdey  <acsawdey@linux.ibm.com>

            PR target/94622
            * config/rs6000/sync.md (load_quadpti): Add attr "prefixed"
            if TARGET_PREFIXED.
            (store_quadpti): Ditto.
            (atomic_load<mode>): Do not swap doublewords if TARGET_PREFIXED=
 as
            plq will be used and doesn't need it.
            (atomic_store<mode>): Ditto, for pstq.=