[Bug target/70168] [5 Regression] Wrong code generation in __sync_val_compare_and_swap on PowerPC

[uweigand at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70168

--- Comment #4 from Ulrich Weigand <uweigand at gcc dot gnu.org> ---
Author: uweigand
Date: Thu Mar 10 23:58:44 2016
New Revision: 234126

URL: https://gcc.gnu.org/viewcvs?rev=234126&root=gcc&view=rev
Log:
        PR target/70168
        * config/rs6000/rs6000.c (rs6000_expand_atomic_compare_and_swap):
        Handle overlapping retval and newval.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/rs6000.c