[Bug middle-end/67989] [4.9/5/6 Regression] g++ ICE on armel valid code

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67989

--- Comment #11 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Mon Oct 26 10:28:12 2015
New Revision: 229317

URL: https://gcc.gnu.org/viewcvs?rev=229317&root=gcc&view=rev
Log:
[optabs.c] Fix PR 67989: Handle const0_rtx target in
expand_atomic_compare_and_swap

        PR middle-end/67989
        * optabs.c (expand_atomic_compare_and_swap): Handle case when
        ptarget_oval or ptarget_bool are const0_rtx.

        * g++.dg/pr67989.C: New test.


Added:
    trunk/gcc/testsuite/g++.dg/pr67989.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/optabs.c
    trunk/gcc/testsuite/ChangeLog