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[Bug target/81357] Extra mov for zero extend of add
- From: "pinskia at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 28 Sep 2017 19:55:38 +0000
- Subject: [Bug target/81357] Extra mov for zero extend of add
- Auto-submitted: auto-generated
- References: <bug-81357-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81357
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Qing Zhao from comment #5)
>
> don’t quite understand your above. what’s your mean by “the mov and uxtw are
> in fact the same instruction”?
In aarch64 assembly mov and uxtw are alias of each other.