[Bug middle-end/45262] [4.2/4.3/4.4/4.5/4.6 Regression] Optimization results in wrong result on expression x>>31||(-x)>>31
jakub at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Thu Aug 12 15:25:00 GMT 2010
------- Comment #5 from jakub at gcc dot gnu dot org 2010-08-12 15:25 -------
Subject: Bug 45262
Author: jakub
Date: Thu Aug 12 15:25:08 2010
New Revision: 163194
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=163194
Log:
PR middle-end/45262
* fold-const.c (make_range) <case NEGATE_EXPR>: Punt if
-a overflows. Normalize the range.
* gcc.c-torture/execute/pr45262.c: New test.
Added:
branches/gcc-4_5-branch/gcc/testsuite/gcc.c-torture/execute/pr45262.c
Modified:
branches/gcc-4_5-branch/gcc/ChangeLog
branches/gcc-4_5-branch/gcc/fold-const.c
branches/gcc-4_5-branch/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45262
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