Hello!

Attached fairly mechanical patch adds missing memory model argument
masks when comparing comparing with various MEMMODEL_* types. Please
note that we can modify the memory model with target flags, IX86_HLE_*
in case of x86.

Also, please note that this patch doesn't touch tsan.c.

2013-01-15  Uros Bizjak  <ubizjak@gmail.com>

        * emit-rtl.c (need_atomic_barrier_p): Mask memory model argument
        with MEMMODEL_MASK before comparing with MEMMODEL_* memory types.
        * optabs.c (maybe_emit_sync_lock_test_and_set): Ditto.
        (expand_mem_thread_fence): Ditto.
        (expand_mem_signal_fence): Ditto.
        (expand_atomic_load): Ditto.
        (expand_atomic_store): Ditto.

Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.

OK for mainline?

Uros.