Re: [Qemu-devel] [PATCH v1 13/23] s390x/tcg: Implement VECTOR LOAD LENGTHENED

[David Hildenbrand]

On 31.05.19 19:33, Richard Henderson wrote:
> On 5/31/19 5:44 AM, David Hildenbrand wrote:
>> +    for (i = 0; i < 2; i++) {
>> +        /* load from even element */
>> +        const float32 a = make_float32(s390_vec_read_element32(v2, i * 2));
> 
> I suppose.
> 
> You could also reuse vop64_2 with
> 
> static uint64_t vfll(uint64_t a, float_status *s)
> {
>     /* Even float32 are stored in the high half of each doubleword.  */
>     return float32_to_float64(a >> 32, s);
> }
> 

Then, I wouldn't be able to indicate the correct element index on
exceptions via the vex (has to be the 32-bit index).

Thanks!

> 
> r~
> 


-- 

Thanks,

David / dhildenb