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From: "amacleod at redhat dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/109637] unnecessary range check in complete switch on bitfield Date: Wed, 26 Apr 2023 19:02:12 +0000 [thread overview] Message-ID: <bug-109637-4-xPyeqxd6bq@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-109637-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109637 --- Comment #3 from Andrew Macleod <amacleod at redhat dot com> --- Just to add: 040.evrp: _2 : [irange] int [0, 3] NONZERO 0x3 _3 : [irange] int [0, 3] NONZERO 0x3 <bb 2> : _1 = s_5(D)->x; _2 = (int) _1; switch (_1) <default: <L5> [INV], case 1: <L1> [INV], case 2: <L2> [INV], case 3: <L3> [INV]> we know the range of _2 is [0, 3].. wonder why we don't know that about _1... having a look
next prev parent reply other threads:[~2023-04-26 19:02 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-04-26 18:17 [Bug middle-end/109637] New: " mattiase at acm dot org 2023-04-26 18:19 ` [Bug middle-end/109637] " pinskia at gcc dot gnu.org 2023-04-26 18:28 ` [Bug tree-optimization/109637] " pinskia at gcc dot gnu.org 2023-04-26 18:52 ` amacleod at redhat dot com 2023-04-26 19:02 ` amacleod at redhat dot com [this message] 2023-04-26 19:05 ` pinskia at gcc dot gnu.org 2023-04-26 19:16 ` amacleod at redhat dot com 2023-08-11 0:17 ` pinskia at gcc dot gnu.org 2023-08-11 0:39 ` pinskia at gcc dot gnu.org
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