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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/53805] combine_comparisons changes trapping behavior Date: Fri, 29 Jun 2012 14:43:00 -0000 [thread overview] Message-ID: <bug-53805-4-TPco1KVcpv@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-53805-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53805 --- Comment #6 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2012-06-29 14:43:30 UTC --- On Fri, 29 Jun 2012, rguenth at gcc dot gnu.org wrote: > We happily remove dead trapping statements: > > void foo(double x, int y) > { > 1 / x; Bug with -ftrapping-math. Maybe a known bug - there are plenty of open bugs for ways in which -ftrapping-math -frounding-math fail to implement standard C semantics - but a bug. > 1 / y; Arguably a bug with -ftrapv (again, the option could reasonably be split into different cases), but not otherwise.
next prev parent reply other threads:[~2012-06-29 14:43 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-06-29 11:00 [Bug tree-optimization/53805] New: " glisse at gcc dot gnu.org 2012-06-29 12:02 ` [Bug tree-optimization/53805] " rguenth at gcc dot gnu.org 2012-06-29 12:19 ` glisse at gcc dot gnu.org 2012-06-29 12:22 ` rguenth at gcc dot gnu.org 2012-06-29 14:24 ` joseph at codesourcery dot com 2012-06-29 14:34 ` rguenth at gcc dot gnu.org 2012-06-29 14:43 ` joseph at codesourcery dot com [this message] 2012-06-29 14:54 ` rguenth at gcc dot gnu.org 2012-07-02 7:27 ` jakub at gcc dot gnu.org 2012-07-06 21:53 ` glisse at gcc dot gnu.org 2012-08-02 19:55 ` glisse at gcc dot gnu.org
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