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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/111006] [SVE] Extra neg for storing to short
 from int comparison
Date: Sat, 12 Aug 2023 20:54:09 +0000
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X-Bugzilla-Component: tree-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111006

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note the non-SVE code generation can be improved too.
With:

(simplify
 (negate
  (vec_pack_trunc:s
   (vec_cond:s @0 uniform_integer_cst_p@1 uniform_integer_cst_p@2)
   (vec_cond:s @3 @1 @2)))
  (with {
   tree outer_mask_type =3D truth_type_for (type);
   tree allones =3D build_minus_one_cst (type);
   tree zeros =3D build_zero_cst (type);
  }
  (if (integer_onep (@1) && integer_zerop (@2))
   (vec_cond (vec_pack_trunc:outer_mask_type @0 @3) { allones; } { zeros; }=
 )
   (if (integer_onep (@2) && integer_zerop (@1))
    (vec_cond (vec_pack_trunc:outer_mask_type @0 @3) { zeros; } { allones; }
)))))


I will submit both later next week.=