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From: "bergner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/67281] HTM builtins aren't treated as compiler barriers on powerpc
Date: Thu, 15 Oct 2015 16:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67281

--- Comment #8 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Thu Oct 15 16:40:14 2015
New Revision: 228847

URL: https://gcc.gnu.org/viewcvs?rev=228847&root=gcc&view=rev
Log:
        Backport from mainline
        2015-10-14  Peter Bergner  <bergner@vnet.ibm.com>
                    Torvald Riegel  <triegel@redhat.com>

        PR target/67281
        * config/rs6000/htm.md (UNSPEC_HTM_FENCE): New.
        (tabort, tabort<wd>c, tabort<wd>ci, tbegin, tcheck, tend,
        trechkpt, treclaim, tsr, ttest): Rename define_insns from this...
        (*tabort, *tabort<wd>c, *tabort<wd>ci, *tbegin, *tcheck, *tend,
        *trechkpt, *treclaim, *tsr, *ttest): ...to this.  Add memory barrier.
        (tabort, tabort<wd>c, tabort<wd>ci, tbegin, tcheck, tend,
        trechkpt, treclaim, tsr, ttest): New define_expands.
        * config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Define
        __TM_FENCE__ for htm.
        * doc/extend.texi: Update documentation for htm builtins.

Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/config/rs6000/htm.md
    branches/gcc-4_9-branch/gcc/config/rs6000/rs6000-c.c
    branches/gcc-4_9-branch/gcc/doc/extend.texi