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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/105983] Failure to optimize (b != 0) && (a >= b) as well as the same pattern with binary and Date: Wed, 15 Jun 2022 13:32:28 +0000 [thread overview] Message-ID: <bug-105983-4-x5UYLErfnk@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-105983-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105983 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org Status|NEW |ASSIGNED --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- --- gcc/match.pd.jj 2022-06-15 12:52:04.640981511 +0200 +++ gcc/match.pd 2022-06-15 15:28:55.916225336 +0200 @@ -2379,14 +2379,14 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) /* y == XXX_MIN || x < y --> x <= y - 1 */ (simplify - (bit_ior:c (eq:s @1 min_value) (lt:s @0 @1)) + (bit_ior:c (eq:s @1 min_value) (lt:cs @0 @1)) (if (INTEGRAL_TYPE_P (TREE_TYPE (@1)) && TYPE_OVERFLOW_WRAPS (TREE_TYPE (@1))) (le @0 (minus @1 { build_int_cst (TREE_TYPE (@1), 1); })))) /* y != XXX_MIN && x >= y --> x > y - 1 */ (simplify - (bit_and:c (ne:s @1 min_value) (ge:s @0 @1)) + (bit_and:c (ne:s @1 min_value) (ge:cs @0 @1)) (if (INTEGRAL_TYPE_P (TREE_TYPE (@1)) && TYPE_OVERFLOW_WRAPS (TREE_TYPE (@1))) (gt @0 (minus @1 { build_int_cst (TREE_TYPE (@1), 1); })))) fixes this.
next prev parent reply other threads:[~2022-06-15 13:32 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-06-14 21:37 [Bug tree-optimization/105983] New: " gabravier at gmail dot com 2022-06-14 21:39 ` [Bug tree-optimization/105983] " pinskia at gcc dot gnu.org 2022-06-14 21:41 ` pinskia at gcc dot gnu.org 2022-06-14 21:45 ` pinskia at gcc dot gnu.org 2022-06-15 12:26 ` jakub at gcc dot gnu.org 2022-06-15 13:32 ` jakub at gcc dot gnu.org [this message] 2022-06-15 14:13 ` rearnsha at gcc dot gnu.org 2022-06-15 14:20 ` rearnsha at gcc dot gnu.org 2022-06-15 14:50 ` jakub at gcc dot gnu.org 2022-06-16 12:37 ` cvs-commit at gcc dot gnu.org 2022-06-16 12:39 ` jakub at gcc dot gnu.org
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