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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/111151] [12/13/14 Regression] Wrong code at -O0 on x86_64-pc-linux-gnu Date: Fri, 22 Mar 2024 19:15:33 +0000 [thread overview] Message-ID: <bug-111151-4-Nodjtlq2Kj@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-111151-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111151 --- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> --- The following testcase at least reproduces the unsigned multiplication issue, but doesn't reproduce the signed multiplication nor division by -1. int main () { unsigned a = (1U + __INT_MAX__) / 2U; unsigned b = 1U; unsigned c = (a * 2U > b * 2U ? a * 2U : b * 2U) * 2U; if (c != 0U) __builtin_abort (); int d = (-__INT_MAX__ - 1) / 2; int e = 10; int f = (d * 2 > e * 2 ? d * 2 : e * 2) * 6; if (f != 120) __builtin_abort (); int g = (-__INT_MAX__ - 1) / 2; int h = 0; int i = (g * 2 > h * 2 ? g * 2 : h * 2) / -1; if (i != 0) __builtin_abort (); }
next prev parent reply other threads:[~2024-03-22 19:15 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-08-25 6:39 [Bug middle-end/111151] New: " jwzeng at nuaa dot edu.cn 2023-08-25 7:16 ` [Bug middle-end/111151] " rguenth at gcc dot gnu.org 2023-08-25 7:16 ` rguenth at gcc dot gnu.org 2023-08-25 11:51 ` mikpelinux at gmail dot com 2023-08-25 12:27 ` rguenth at gcc dot gnu.org 2023-08-25 12:28 ` rguenth at gcc dot gnu.org 2023-08-25 12:35 ` rguenth at gcc dot gnu.org 2023-08-26 3:27 ` pinskia at gcc dot gnu.org 2024-03-22 13:40 ` law at gcc dot gnu.org 2024-03-22 17:29 ` jakub at gcc dot gnu.org 2024-03-22 17:37 ` jakub at gcc dot gnu.org 2024-03-22 17:41 ` jakub at gcc dot gnu.org 2024-03-22 17:57 ` jakub at gcc dot gnu.org 2024-03-22 18:48 ` jakub at gcc dot gnu.org 2024-03-22 19:15 ` jakub at gcc dot gnu.org [this message] 2024-03-25 7:23 ` rguenth at gcc dot gnu.org 2024-03-25 11:01 ` jakub at gcc dot gnu.org 2024-03-25 12:45 ` rguenth at gcc dot gnu.org 2024-03-26 10:22 ` cvs-commit at gcc dot gnu.org 2024-03-26 10:32 ` [Bug middle-end/111151] [12/13 " jakub at gcc dot gnu.org 2024-03-26 15:43 ` cvs-commit at gcc dot gnu.org 2024-03-30 3:55 ` cvs-commit at gcc dot gnu.org
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