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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/64295] [5 Regression] ICE: SIGSEGV (infinite recursion) with -frounding-math -funsafe-math-optimizations Date: Mon, 15 Dec 2014 09:21:00 -0000 [thread overview] Message-ID: <bug-64295-4-PGaLdJ3cxK@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-64295-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64295 --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- Ok, so we're folding g / 3 -> g * (1 / 3) and then applyign the same transform to 1 / 3 (because that's not constant folded with -frounding-math). I believe the option combination is a red herring, but ... The original fold-const.c code only transformed this if 1 / 3 constant folded but I used fold_binary in the pattern (because const_binop wasn't available at the point of writing it). Testing a patch.
next prev parent reply other threads:[~2014-12-15 9:21 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-12-13 9:44 [Bug tree-optimization/64295] New: " zsojka at seznam dot cz 2014-12-13 17:34 ` [Bug tree-optimization/64295] " jakub at gcc dot gnu.org 2014-12-15 9:00 ` rguenth at gcc dot gnu.org 2014-12-15 9:21 ` rguenth at gcc dot gnu.org [this message] 2014-12-15 13:01 ` rguenth at gcc dot gnu.org 2014-12-15 13:02 ` rguenth at gcc dot gnu.org
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