https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87064
--- Comment #19 from Segher Boessenkool <segher at gcc dot gnu.org> ---
The pattern makes no sense at all for LE.
If LE,
(vec_concat:V2DF
(vec_select:DF
(match_operand:V2DF 1 "vfloat_operand" "wd,wa,wd,wa")
(parallel [(const_int 1)]))
(vec_select:DF
(match_dup 1)
(parallel [(const_int 0)])))
means exactly the same as just
(match_operand:V2DF 1 "vfloat_operand" "wd,wa,wd,wa")
So how does this pattern ever match for LE anyway? Are there some
serious missed simplifications?
