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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/98906] [8/9/10/11 Regression] Miscompiles code even at -O1 Date: Mon, 01 Feb 2021 00:07:52 +0000 [thread overview] Message-ID: <bug-98906-4-AIReMCeuUt@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-98906-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98906 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- So ccp3 is doing it. Visiting statement: quo_lo_52 = floorf (_51); which is likely CONSTANT Match-and-simplified floorf (_51) to -8.6e+1 Lattice value changed to CONSTANT -8.6e+1. Adding SSA edges to worklist. Visiting statement: _55 = (unsigned int) quo_lo_52; which is likely CONSTANT Match-and-simplified (unsigned int) quo_lo_52 to 0 Lattice value changed to CONSTANT 0. Adding SSA edges to worklist. I think this code is undefined/unspecified as -86 is outside the range of an unsigned int.
next prev parent reply other threads:[~2021-02-01 0:07 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-31 23:44 [Bug tree-optimization/98906] New: " amonakov at gcc dot gnu.org 2021-02-01 0:07 ` pinskia at gcc dot gnu.org [this message] 2021-02-01 0:16 ` [Bug tree-optimization/98906] " pinskia at gcc dot gnu.org 2021-02-01 0:32 ` pinskia at gcc dot gnu.org 2021-02-01 0:36 ` pinskia at gcc dot gnu.org 2021-02-01 8:02 ` jakub at gcc dot gnu.org 2021-02-01 8:15 ` amonakov at gcc dot gnu.org
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