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From: "luoxhu at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/94790] Failure to use andn in specific pattern in which it is available Date: Mon, 27 Dec 2021 07:20:30 +0000 [thread overview] Message-ID: <bug-94790-4-FZ97HDSKKp@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-94790-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94790 luoxhu at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |luoxhu at gcc dot gnu.org --- Comment #3 from luoxhu at gcc dot gnu.org --- On Power, '(~mask & a) | (b & mask)' is better than 'a ^ ((a ^ b) & mask)' as the first can be generated as one instruction 'xxsel' as PR90323 shows.
next prev parent reply other threads:[~2021-12-27 7:20 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-04-27 9:30 [Bug tree-optimization/94790] New: " gabravier at gmail dot com 2020-04-27 10:21 ` [Bug rtl-optimization/94790] " rguenth at gcc dot gnu.org 2021-12-27 5:53 ` pinskia at gcc dot gnu.org 2021-12-27 7:20 ` luoxhu at gcc dot gnu.org [this message] 2021-12-27 7:49 ` luoxhu at gcc dot gnu.org 2022-01-12 6:09 ` crazylht at gmail dot com 2022-01-13 5:14 ` cvs-commit at gcc dot gnu.org 2022-01-13 5:17 ` crazylht at gmail dot com 2022-01-14 5:02 ` cvs-commit at gcc dot gnu.org
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