[Bug target/61713] ICE when building c++ code with atomic functions for thumb1 target

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61713

--- Comment #7 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Thu Aug 14 09:32:17 2014
New Revision: 213954

URL: https://gcc.gnu.org/viewcvs?rev=213954&root=gcc&view=rev
Log:
[optabs.c] Fix ICE when expanding single-threaded version of
atomic_test_and_set

    Backport from mainline
    2014-08-04  Kyrylo Tkachov  <kyrylo.tkac...@arm.com>

    PR target/61713
    * gcc/optabs.c (expand_atomic_test_and_set): Do not try to emit
    move to subtarget in serial version if result is ignored.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/pr61756.c
Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/optabs.c
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog