https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54174
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2021-08-21
Severity|normal |enhancement
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
Most likely the vec_extract_lo_<mode> pattern should have a tie for the input
and output being the same register
Something like:
(define_insn "vec_extract_lo_<mode>"
[(set (match_operand:<ssehalfvecmode> 0 "nonimmediate_operand" "=v,v,vm,v")
(vec_select:<ssehalfvecmode>
(match_operand:V8FI 1 "nonimmediate_operand" "0,v,v,vm")
(parallel [(const_int 0) (const_int 1)
(const_int 2) (const_int 3)])))]
