langhooks-def.h (LANG_HOOKS_TREE_INLINING_COPY_RES_DECL_FOR_INLINING, [...]): Remove.

        * langhooks-def.h (LANG_HOOKS_TREE_INLINING_COPY_RES_DECL_FOR_INLINING,
        lhd_tree_inlining_copy_res_decl_for_inlining): Remove.
        * langhooks.c (lhd_tree_inlining_copy_res_decl_for_inlining): Remove.
        * langhooks.h (struct lang_hooks_for_tree_inlining): Remove
        copy_res_decl_for_inlining.

        * tree-inline.c (declare_return_variable): New modify_dest argument.
        Use it as the return value, when possible or manditory.  Handle
        TREE_ADDRESSABLE types.
        (expand_call_inline): Extract MODIFY_EXPR lhs for call.  Simplify
        replacement of CALL_EXPR.

cp/
        * cp-lang.c (LANG_HOOKS_TREE_INLINING_COPY_RES_DECL_FOR_INLINING): Die.
        * cp-tree.h (cp_copy_res_decl_for_inlining): Remove.
        * tree.c (cp_copy_res_decl_for_inlining): Remove.

From-SVN: r84831