On 08/07/2017 02:42 AM, Alexander Monakov wrote:
> On Sat, 5 Aug 2017, Richard Sandiford wrote:
>> It would be simpler to test whether targetm.gen_mem_thread_fence
>> returns NULL.
>>
>> This feels a bit hacky though. Checking whether a generator produced no
>> instructions is usually the test for
On Sat, 5 Aug 2017, Richard Sandiford wrote:
> It would be simpler to test whether targetm.gen_mem_thread_fence
> returns NULL.
>
> This feels a bit hacky though. Checking whether a generator produced no
> instructions is usually the test for whether the generator FAILed, which
> should normally
Alexander Monakov writes:
> diff --git a/gcc/optabs.c b/gcc/optabs.c
> index a9900657a58..d568ca376fe 100644
> --- a/gcc/optabs.c
> +++ b/gcc/optabs.c
> @@ -6298,7 +6298,12 @@ void
> expand_mem_thread_fence (enum memmodel model)
> {
>if (targetm.have_mem_thread_fence ())
> -emit_insn (ta
