[Patch 8/11] Make _Float16 available if HFmode is available

[Jeff Law]

On 09/30/2016 10:56 AM, James Greenhalgh wrote:
>
> Hi,
>
> Now that we've worked on -fexcess-precision, the comment in targhooks.c
> no longer holds. We can now permit _Float16 on any target which provides
> HFmode and supports HFmode in libgcc.
>
> Bootstrapped and tested on x86-64, and in series on AArch64.
>
> OK?
>
> Thanks,
> James
>
> ---
> 2016-09-30  James Greenhalgh  <james.greenhalgh@arm.com>
>
> 	* targhooks.c (default_floatn_mode): Enable _Float16 if a target
> 	provides HFmode.
OK when prereqs are approved.

jeff