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From: "jakub at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/41917] Strange athrithmetic result with -O3 Date: Tue, 03 Nov 2009 22:40:00 -0000 [thread overview] Message-ID: <20091103224023.11030.qmail@sourceware.org> (raw) In-Reply-To: <bug-41917-18350@http.gcc.gnu.org/bugzilla/> ------- Comment #4 from jakub at gcc dot gnu dot org 2009-11-03 22:40 ------- Subject: Bug 41917 Author: jakub Date: Tue Nov 3 22:40:08 2009 New Revision: 153875 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=153875 Log: PR rtl-optimization/41917 * rtlanal.c (num_sign_bit_copies1) <case UMOD>: If sign bit of second operand isn't known to be 0, return 1. * gcc.c-torture/execute/pr41917.c: New test. Added: branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/execute/pr41917.c Modified: branches/gcc-4_4-branch/gcc/ChangeLog branches/gcc-4_4-branch/gcc/rtlanal.c branches/gcc-4_4-branch/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41917
next prev parent reply other threads:[~2009-11-03 22:40 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-11-02 21:51 [Bug c/41917] New: " chenyang at cs dot utah dot edu 2009-11-02 21:56 ` [Bug c/41917] " regehr at cs dot utah dot edu 2009-11-02 22:24 ` chenyang at cs dot utah dot edu 2009-11-02 22:36 ` jakub at gcc dot gnu dot org 2009-11-03 22:37 ` [Bug rtl-optimization/41917] " jakub at gcc dot gnu dot org 2009-11-03 22:40 ` jakub at gcc dot gnu dot org [this message] 2009-11-14 16:33 ` mikpe at it dot uu dot se 2009-11-14 16:35 ` jakub at gcc dot gnu dot org 2009-11-14 19:43 ` [Bug rtl-optimization/41917] [4.3 Regression] " rguenth at gcc dot gnu dot org 2010-01-02 16:31 ` rguenth at gcc dot gnu dot org 2010-02-16 8:16 ` bonzini at gnu dot org 2010-02-16 8:16 ` bonzini at gcc dot gnu dot org
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