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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/113576] [14 regression] 502.gcc_r hangs r14-8223-g1c1853a70f9422169190e65e568dcccbce02d95c Date: Wed, 24 Jan 2024 13:50:51 +0000 [thread overview] Message-ID: <bug-113576-4-fIYPeosHos@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-113576-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113576 --- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> --- diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc index fe631252dc2..28ad03e0b8a 100644 --- a/gcc/tree-vect-loop.cc +++ b/gcc/tree-vect-loop.cc @@ -991,8 +991,12 @@ vec_init_loop_exit_info (class loop *loop) { tree may_be_zero = niter_desc.may_be_zero; if ((integer_zerop (may_be_zero) - || integer_nonzerop (may_be_zero) - || COMPARISON_CLASS_P (may_be_zero)) + /* As we are handling may_be_zero that's not false by + rewriting niter to may_be_zero ? 0 : niter we require + an empty latch. */ + || (exit->src == single_pred (loop->latch) + && (integer_nonzerop (may_be_zero) + || COMPARISON_CLASS_P (may_be_zero)))) && (!candidate || dominated_by_p (CDI_DOMINATORS, exit->src, candidate->src))) fixes it, I'm testing this.
next prev parent reply other threads:[~2024-01-24 13:50 UTC|newest] Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-01-24 10:05 [Bug tree-optimization/113576] New: " liuhongt at gcc dot gnu.org 2024-01-24 10:07 ` [Bug tree-optimization/113576] " liuhongt at gcc dot gnu.org 2024-01-24 12:27 ` rguenth at gcc dot gnu.org 2024-01-24 13:37 ` rguenth at gcc dot gnu.org 2024-01-24 13:47 ` rguenth at gcc dot gnu.org 2024-01-24 13:50 ` rguenth at gcc dot gnu.org [this message] 2024-01-25 1:03 ` liuhongt at gcc dot gnu.org 2024-01-25 6:28 ` liuhongt at gcc dot gnu.org 2024-01-25 7:02 ` liuhongt at gcc dot gnu.org 2024-01-25 7:39 ` cvs-commit at gcc dot gnu.org 2024-01-25 8:34 ` liuhongt at gcc dot gnu.org 2024-01-25 8:52 ` rguenth at gcc dot gnu.org 2024-01-25 9:15 ` rguenther at suse dot de 2024-01-25 9:26 ` rsandifo at gcc dot gnu.org 2024-01-25 10:09 ` liuhongt at gcc dot gnu.org 2024-01-25 10:13 ` rguenth at gcc dot gnu.org 2024-01-25 12:24 ` rsandifo at gcc dot gnu.org 2024-01-25 13:03 ` tnfchris at gcc dot gnu.org 2024-01-25 13:28 ` rsandifo at gcc dot gnu.org 2024-01-25 14:12 ` rguenther at suse dot de 2024-01-26 2:24 ` liuhongt at gcc dot gnu.org 2024-01-26 3:12 ` liuhongt at gcc dot gnu.org 2024-01-26 5:43 ` liuhongt at gcc dot gnu.org 2024-01-29 17:28 ` tnfchris at gcc dot gnu.org 2024-01-29 18:31 ` tnfchris at gcc dot gnu.org 2024-01-30 3:29 ` liuhongt at gcc dot gnu.org 2024-01-30 7:46 ` tnfchris at gcc dot gnu.org 2024-01-30 8:26 ` rguenth at gcc dot gnu.org 2024-01-30 8:34 ` liuhongt at gcc dot gnu.org 2024-01-30 8:56 ` rguenth at gcc dot gnu.org 2024-01-30 10:12 ` rsandifo at gcc dot gnu.org 2024-01-30 10:39 ` rguenther at suse dot de 2024-02-01 8:59 ` rguenth at gcc dot gnu.org 2024-02-01 9:06 ` jakub at gcc dot gnu.org 2024-02-01 9:18 ` rsandifo at gcc dot gnu.org 2024-02-01 10:04 ` rguenth at gcc dot gnu.org 2024-02-07 15:08 ` rguenth at gcc dot gnu.org 2024-02-08 1:18 ` liuhongt at gcc dot gnu.org 2024-02-08 1:58 ` liuhongt at gcc dot gnu.org 2024-02-08 4:22 ` liuhongt at gcc dot gnu.org 2024-02-08 7:36 ` jakub at gcc dot gnu.org 2024-02-08 10:35 ` rguenth at gcc dot gnu.org 2024-02-08 10:48 ` rguenth at gcc dot gnu.org 2024-02-08 14:58 ` liuhongt at gcc dot gnu.org 2024-02-08 15:07 ` liuhongt at gcc dot gnu.org 2024-02-08 15:19 ` liuhongt at gcc dot gnu.org 2024-02-14 12:07 ` cvs-commit at gcc dot gnu.org 2024-02-14 12:38 ` rguenth at gcc dot gnu.org 2024-02-14 13:48 ` ubizjak at gmail dot com 2024-02-14 13:54 ` rguenth at gcc dot gnu.org 2024-02-14 13:59 ` jakub at gcc dot gnu.org 2024-02-14 14:01 ` jakub at gcc dot gnu.org 2024-02-14 14:31 ` ubizjak at gmail dot com 2024-02-14 14:36 ` jakub at gcc dot gnu.org 2024-02-14 15:07 ` rguenth at gcc dot gnu.org 2024-02-14 15:26 ` ubizjak at gmail dot com 2024-02-14 20:18 ` ubizjak at gmail dot com 2024-02-18 2:10 ` liuhongt at gcc dot gnu.org
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