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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/108199] Bitfields, unions and SRA and
 storage_order_attribute
Date: Thu, 22 Dec 2022 18:29:18 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108199

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andreas Krebbel from comment #5)
> In:
>=20
>   _1 =3D src_6(D)->a;
>   dst$val_9 =3D _1;
>   _2 =3D BIT_FIELD_REF <dst$val_9, 8, 0>;
>   _3 =3D _2 & 64;
>   if (_3 !=3D 0)

There is only 2 accesses going on in the above IR because SRA removed the 3=
rd
when it replaced the access of dst.val with dst$val but didn't update
BIT_FIELD_REF to remove the byteswap ...=