[Bug tree-optimization/14847] [tree-ssa] combine "if (a & 1) goto there" and "if (a & 4) goto there"

[rguenth at gcc dot gnu dot org]

------- Comment #6 from rguenth at gcc dot gnu dot org  2008-04-30 15:07 -------
Subject: Bug 14847

Author: rguenth
Date: Wed Apr 30 15:06:16 2008
New Revision: 134825

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=134825
Log:
2008-04-30  Richard Guenther  <[EMAIL PROTECTED]>

        PR tree-optimization/14847
        * tree-ssa-ifcombine.c (get_name_for_bit_test): New helper function.
        (recognize_bits_test): Use it.
        (recognize_single_bit_test): Likewise.

        * gcc.dg/tree-ssa/ssa-ifcombine-6.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ifcombine-6.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ifcombine.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14847