2011-07-07  Kai Tietz  <ktietz@redhat.com>

        * tree-ssa-forwprop.c (truth_valued_ssa_name): New function.
        (lookup_logical_inverted_value): Likewise.
        (simplify_bitwise_binary_1): Likewise.
        (simplify_bitwise_binary): Use simplify_bitwise_binary_1.

2011-07-07  Kai Tietz  <ktietz@redhat.com>

        * gcc.dg/binop-notxor1.c: New test.
        * gcc.dg/binop-notand4a.c: New test.
        * gcc.dg/binop-notxor2.c: New test.
        * gcc.dg/binop-notand3a.c: New test.
        * gcc.dg/binop-notand2a.c: New test.
        * gcc.dg/binop-notand6a.c: New test.
        * gcc.dg/binop-notor1.c: New test.
        * gcc.dg/binop-notand1a.c: New test.
        * gcc.dg/binop-notand5a.c: New test.
        * gcc.dg/binop-notor2.c: New test.

From-SVN: r175974