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r164761 - in /trunk/gcc: ChangeLog fold-const.c...
- From: jakub at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Thu, 30 Sep 2010 19:21:36 -0000
- Subject: r164761 - in /trunk/gcc: ChangeLog fold-const.c...
Author: jakub
Date: Thu Sep 30 19:21:34 2010
New Revision: 164761
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=164761
Log:
PR tree-optimization/31261
* fold-const.c (fold_binary): Optimize ((A & N) + B) & M
for constants M and N, M == (1LL << cst) - 1 && (N & M) == M.
* gcc.dg/tree-ssa/pr31261.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr31261.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
trunk/gcc/testsuite/ChangeLog