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From: "zhendong.su at inf dot ethz.ch" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/111727] New: wrong code at -O3 on x86_64-linux-gnu Date: Sun, 08 Oct 2023 16:34:25 +0000 [thread overview] Message-ID: <bug-111727-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111727 Bug ID: 111727 Summary: wrong code at -O3 on x86_64-linux-gnu Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: zhendong.su at inf dot ethz.ch Target Milestone: --- Compiler Explorer: https://godbolt.org/z/xherWE8x6 It might be related to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111652. [508] % gcctk -v Using built-in specs. COLLECT_GCC=gcctk COLLECT_LTO_WRAPPER=/local/suz-local/software/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --disable-bootstrap --enable-checking=yes --prefix=/local/suz-local/software/local/gcc-trunk --enable-sanitizers --enable-languages=c,c++ --disable-werror --enable-multilib Thread model: posix Supported LTO compression algorithms: zlib gcc version 14.0.0 20231008 (experimental) (GCC) [509] % [509] % gcctk -O2 small.c; ./a.out [510] % [510] % gcctk -O3 small.c [511] % ./a.out Aborted [512] % cat small.c int a, b, c; int main() { for (; a < 2; a += 2) { for (b = 0; b < 1; b++) if (a < 1) c = 0; for (; c < 1; c++) ; } if (a != 2) __builtin_abort(); return 0; }
next reply other threads:[~2023-10-08 16:34 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-10-08 16:34 zhendong.su at inf dot ethz.ch [this message] 2023-10-08 16:50 ` [Bug tree-optimization/111727] [14 Regression] " pinskia at gcc dot gnu.org 2023-10-13 6:31 ` zhendong.su at inf dot ethz.ch 2023-10-17 13:06 ` rguenth at gcc dot gnu.org 2023-10-17 13:54 ` ppalka at gcc dot gnu.org 2023-11-14 14:13 ` [Bug tree-optimization/111727] [14 Regression] wrong code at -O3 on x86_64-linux-gnu since r14-2944-g3d48c11ad082de cvs-commit at gcc dot gnu.org 2023-11-14 14:15 ` rguenth at gcc dot gnu.org
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