Re: [qemu-s390x] [Qemu-devel] [PATCH v1 05/15] s390x/tcg: Hide IEEE underflows in some scenarios

[Richard Henderson]

On 2/12/19 3:02 AM, David Hildenbrand wrote:
> IEEE underflows are not reported when the mask bit is off and we don't
> also have an inexact exception.
> 
> z14 PoP, 9-20, "IEEE Underflow":
>     An IEEE-underflow exception is recognized for an
>     IEEE target when the tininess condition exists and
>     either: (1) the IEEE-underflow mask bit in the FPC
>     register is zero and the result value is inexact, or (2)
>     the IEEE-underflow mask bit in the FPC register is
>     one.
> 
> Signed-off-by: David Hildenbrand <address@hidden>
> ---
>  target/s390x/fpu_helper.c | 13 +++++++++++++
>  1 file changed, 13 insertions(+)

Reviewed-by: Richard Henderson <address@hidden>


r~