Re: [Qemu-devel] [PATCH v2 2/3] fpu/softfloat: support ARM Alternative half-precision

[Alex Bennée]

Richard Henderson <address@hidden> writes:

> On 05/03/2018 11:17 AM, Peter Maydell wrote:
>> (target/i386 notably does not do this, we should check how
>> SSE and x87 handle NaNs in fp conversions first.)
>
> Hardware does silence NaNs.  I tested that earlier:
>
> https://lists.gnu.org/archive/html/qemu-devel/2018-04/msg03114.html

Does that include SSE? I know the hardware will silence NaN's if the
value is ever pushed into an x87 register (as GCC will do when
spilling/filling float).

>
>
> r~


--
Alex Bennée