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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/102983] [12 Regression] Dead Code Elimination Regression at -O3 (trunk vs 11.2.0) Date: Thu, 28 Oct 2021 10:31:42 +0000 [thread overview] Message-ID: <bug-102983-4-CtbpXNA89J@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-102983-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102983 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Keywords| |missed-optimization Last reconfirmed| |2021-10-28 Ever confirmed|0 |1 Target Milestone|--- |12.0 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Hmm: <bb 5> : if (c_3 < 0) goto <bb 6>; [INV] else goto <bb 9>; [INV] <bb 6> : if (c_3 != 0) goto <bb 7>; [INV] else goto <bb 8>; [INV] =========== BB 5 ============ Imports: c_3 b_4 Exports: c_3 b_4 c_3 int [-INF, 1] b_4 int [0, 0] <bb 5> : if (c_3 < 0) goto <bb 6>; [INV] else goto <bb 9>; [INV] 5->6 (T) c_3 : int [-INF, -1] 5->6 (T) b_4 : int [0, 0] 5->9 (F) c_3 : int [0, 1] 5->9 (F) b_4 : int [0, 0] =========== BB 6 ============ Imports: c_3 Exports: c_3 c_3 int [-INF, 0] b_4 int [0, 0] <bb 6> : if (c_3 != 0) goto <bb 7>; [INV] else goto <bb 8>; [INV] 6->7 (T) c_3 : int [-INF, -1] 6->8 (F) c_3 : int [0, 0] Hmmmm.
next prev parent reply other threads:[~2021-10-28 10:31 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-10-28 9:56 [Bug tree-optimization/102983] New: " theodort at inf dot ethz.ch 2021-10-28 10:31 ` pinskia at gcc dot gnu.org [this message] 2021-10-28 11:34 ` [Bug tree-optimization/102983] " rguenth at gcc dot gnu.org 2021-10-28 16:35 ` amacleod at redhat dot com 2021-10-29 14:43 ` cvs-commit at gcc dot gnu.org 2021-10-29 14:46 ` amacleod at redhat dot com
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