Hi Kewen,
在 2024/6/5 17:00, Kewen.Lin 写道:
> This predicate can be moved to its only use (define_insn part condition).
> The const_vector match_code check is redundant as const_vec_duplicate_p
> already checks that, I wonder if we really need easy_altivec_constant?
> Even if one vector constant doesn't meet easy_altivec_constant, but if
> it matches the desired duplicated pattern, it doesn't need the swapping
> either, no?
Thanks for your comments.
I think we need easy_altivec_constant as the constant will be directly
moved to a vector register after split. It might fail if it's not a easy
alitvec constant?
[(set (match_dup 2)
(match_dup 1))
Thanks
Gui Haochen
