https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89984
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-09-01
Keywords| |easyhack
Ever confirmed|0 |1
Component|rtl-optimization |target
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The problem is here:
(define_insn_and_split "@xorsign<mode>3_1"
[(set (match_operand:MODEF 0 "register_operand" "=Yv")
(unspec:MODEF
[(match_operand:MODEF 1 "register_operand" "Yv")
(match_operand:MODEF 2 "register_operand" "0")
(match_operand:<ssevecmode> 3 "nonimmediate_operand" "Yvm")]
UNSPEC_XORSIGN))]
"SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH"
"#"
"&& reload_completed"
[(const_int 0)]
"ix86_split_xorsign (operands); DONE;")
for AVX operand 2 does not need to be the same as operand 0.
Shouldn't be a hard change for someone starting out to improve this.
