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From: "gabravier at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/95731] New: Faiilure to optimize a >= 0 && b >= 0 to (a | b) >= 0 Date: Wed, 17 Jun 2020 21:58:23 +0000 [thread overview] Message-ID: <bug-95731-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95731 Bug ID: 95731 Summary: Faiilure to optimize a >= 0 && b >= 0 to (a | b) >= 0 Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: gabravier at gmail dot com Target Milestone: --- bool f(int a, int b) { return a >= 0 && b >= 0; } This can be optimized to `return (a | b) >= 0;`. LLVM does this transformation, but GCC does not.
next reply other threads:[~2020-06-17 21:58 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-17 21:58 gabravier at gmail dot com [this message] 2020-06-18 8:41 ` [Bug tree-optimization/95731] " rguenth at gcc dot gnu.org 2020-06-18 9:19 ` jakub at gcc dot gnu.org 2020-08-04 11:21 ` wilco at gcc dot gnu.org 2020-08-04 11:30 ` jakub at gcc dot gnu.org 2021-01-11 14:44 ` [Bug tree-optimization/95731] Failure " jakub at gcc dot gnu.org 2021-01-12 10:05 ` cvs-commit at gcc dot gnu.org 2021-01-16 8:42 ` jakub at gcc dot gnu.org 2021-08-14 21:27 ` pinskia at gcc dot gnu.org 2021-08-14 21:28 ` pinskia at gcc dot gnu.org
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