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From: "raeburn at raeburn dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/33259] limited range of remainder operation can prove loop runs at most once Date: Mon, 05 Sep 2011 22:46:00 -0000 [thread overview] Message-ID: <bug-33259-4-TyTo6VWcdi@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-33259-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33259 --- Comment #4 from Ken Raeburn <raeburn at raeburn dot org> 2011-09-05 22:45:28 UTC --- I did a little experimentation with git revision c3f18f1 and it looks like it does the right thing (optimizes away the calculations and returns a constant) with Andrew Pinski's simplified test case if the argument is unsigned, but still executes the code if the argument is signed.
next parent reply other threads:[~2011-09-05 22:46 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <bug-33259-4@http.gcc.gnu.org/bugzilla/> 2011-09-05 22:46 ` raeburn at raeburn dot org [this message] 2007-08-31 8:05 [Bug tree-optimization/33259] New: " raeburn at raeburn dot org 2007-08-31 8:06 ` [Bug tree-optimization/33259] " raeburn at raeburn dot org 2008-08-16 18:19 ` raeburn at raeburn dot org 2008-12-27 7:20 ` pinskia at gcc dot gnu dot org
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