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r111471 - in /trunk/gcc: ChangeLog fold-const.c...
- From: sayle at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Mon, 27 Feb 2006 03:22:20 -0000
- Subject: r111471 - in /trunk/gcc: ChangeLog fold-const.c...
Author: sayle
Date: Mon Feb 27 03:22:18 2006
New Revision: 111471
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=111471
Log:
* fold-const.c (fold_binary) <EQ_EXPR>: Fold (~X & C) eq/ne 0 as
(X & C) ne/eq 0, where C is a single bit, i.e. a power of two.
Fold both "((X & C) ^ C) eq/ne 0" and "((X ^ C) & C) eq/ne 0"
as (X & C) ne/eq 0.
* gcc.dg/fold-eqandnot-1.c: New test case.
Added:
trunk/gcc/testsuite/gcc.dg/fold-eqandnot-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
trunk/gcc/testsuite/ChangeLog