[Bug middle-end/54261] reverse sync/atomic operators when only sync_compare_and_swap_optab libfuncs implemented

[hp at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54261

--- Comment #4 from Hans-Peter Nilsson <hp at gcc dot gnu.org> 2012-08-17 
00:18:42 UTC ---
Author: hp
Date: Fri Aug 17 00:18:35 2012
New Revision: 190463

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190463
Log:
    PR middle-end/54261
    * optabs.c (expand_atomic_fetch_op): Save and restore code when
    retrying after failed attempt.

Modified:
    trunk/gcc/optabs.c