[Bug libitm/57643] libitm.c/reentrant.c hangs on POWER8 with HTM

[bergner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57643

--- Comment #2 from Peter Bergner <bergner at gcc dot gnu.org> ---
Author: bergner
Date: Mon Mar  3 22:13:28 2014
New Revision: 208295

URL: http://gcc.gnu.org/viewcvs?rev=208295&root=gcc&view=rev
Log:
    Backport from mainline
    2013-06-20  Torvald Riegel  <triegel@redhat.com>

    * query.cc (_ITM_inTransaction): Abort when using the HTM fastpath.
    (_ITM_getTransactionId): Same.
    * config/x86/target.h (htm_transaction_active): New.

    2013-06-20  Torvald Riegel  <triegel@redhat.com>

    PR libitm/57643
    * beginend.cc (gtm_thread::begin_transaction): Handle reentrancy in
    the HTM fastpath.

Modified:
    branches/gcc-4_8-branch/libitm/ChangeLog
    branches/gcc-4_8-branch/libitm/beginend.cc
    branches/gcc-4_8-branch/libitm/config/x86/target.h
    branches/gcc-4_8-branch/libitm/query.cc