* c-typeck.c (initializer_constant_valid_p): Move ...
        * c-common.c (initializer_constant_valid_p): ... here.  Use
        FOO_TYPE_P instead of tests against TREE_CODE.  Allow subtraction
        of label addresses.
        * c-common.h (initializer_constant_valid_p): Declare.
        * c-tree.h (initializer_constant_valid_p): Remove.

From-SVN: r28349