[Bug rtl-optimization/41917] Strange athrithmetic result with -O3
jakub at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Tue Nov 3 22:40:00 GMT 2009
------- 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
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