Re: [PATCH 3/3] s390: Revise vector reverse elements

2023-11-09 Thread Andreas Krebbel
On 11/9/23 09:22, Stefan Schulze Frielinghaus wrote: > Replace UNSPEC_VEC_ELTSWAP with a vec_select implementation. > > Furthermore, for a vector reverse elements operation between registers > of mode V8HI perform three rotates instead of a vperm operation since > the latter involves loading the p

[PATCH 3/3] s390: Revise vector reverse elements

2023-11-09 Thread Stefan Schulze Frielinghaus
Replace UNSPEC_VEC_ELTSWAP with a vec_select implementation. Furthermore, for a vector reverse elements operation between registers of mode V8HI perform three rotates instead of a vperm operation since the latter involves loading the permutation vector from the literal pool. Prior z15, instead of