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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/108757] We do not simplify (a - (N*M)) / N + M -> a / N Date: Mon, 13 Feb 2023 21:01:23 +0000 [thread overview] Message-ID: <bug-108757-4-pxI1NbtOA2@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-108757-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108757 --- Comment #19 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Note in the loop case we know it does not wrap because there is a check already: <bb 2> [local count: 118111600]: if (rows_8(D) > 3) goto <bb 5>; [89.00%] else goto <bb 4>; [11.00%] <bb 5> [local count: 105119324]: _13 = rows_8(D) + 18446744073709551612; _15 = _13 / 4; doloop.6_5 = _15 + 1;
next prev parent reply other threads:[~2023-02-13 21:01 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-02-10 22:26 [Bug tree-optimization/108757] New: " bergner at gcc dot gnu.org 2023-02-10 22:28 ` [Bug tree-optimization/108757] " bergner at gcc dot gnu.org 2023-02-10 22:33 ` pinskia at gcc dot gnu.org 2023-02-10 22:40 ` pinskia at gcc dot gnu.org 2023-02-11 13:14 ` anlauf at gcc dot gnu.org 2023-02-11 16:38 ` segher at gcc dot gnu.org 2023-02-11 17:32 ` bergner at gcc dot gnu.org 2023-02-11 17:55 ` segher at gcc dot gnu.org 2023-02-11 18:05 ` bergner at gcc dot gnu.org 2023-02-11 18:15 ` segher at gcc dot gnu.org 2023-02-11 19:45 ` chip.kerchner at ibm dot com 2023-02-11 21:55 ` chip.kerchner at ibm dot com 2023-02-11 22:03 ` chip.kerchner at ibm dot com 2023-02-13 20:13 ` chip.kerchner at ibm dot com 2023-02-13 20:20 ` pinskia at gcc dot gnu.org 2023-02-13 20:27 ` [Bug rtl-optimization/108757] " pinskia at gcc dot gnu.org 2023-02-13 20:36 ` chip.kerchner at ibm dot com 2023-02-13 20:37 ` chip.kerchner at ibm dot com 2023-02-13 20:58 ` [Bug tree-optimization/108757] " pinskia at gcc dot gnu.org 2023-02-13 20:59 ` pinskia at gcc dot gnu.org 2023-02-13 21:01 ` pinskia at gcc dot gnu.org [this message] 2023-05-11 13:15 ` guojiufu at gcc dot gnu.org 2023-05-11 17:32 ` pinskia at gcc dot gnu.org 2023-05-12 1:52 ` guojiufu at gcc dot gnu.org 2023-05-12 6:25 ` guojiufu at gcc dot gnu.org 2023-05-12 9:35 ` guojiufu at gcc dot gnu.org 2023-09-04 2:46 ` cvs-commit at gcc dot gnu.org 2023-09-04 3:26 ` guojiufu at gcc dot gnu.org
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