tree.def (FFS_EXPR, [...]): Delete unused tree codes.

tree.def (FFS_EXPR, [...]): Delete unused tree codes.

	* tree.def (FFS_EXPR, CLZ_EXPR, CTZ_EXPR, POPCOUNT_EXPR,
	PARITY_EXPR): Delete unused tree codes.
	* c-common.c (c_common_truthvalue_conversion): Delete references
	to FFS_EXPR and POPCOUNT_EXPR.
	* c-pretty-print.c (pp_c_postfix_expression): Remove FFS_EXPR.
	(pp_c_expression): Likewise.
	* expr.c (expand_expr): Delete RTL expansion of FFS_EXPR, CLZ_EXPR,
	CTZ_EXPR, POPCOUNT_EXPR and PARITY_EXPR.
	* fold-const.c (tree_expr_nonnegative_p): Remove FFS_EXPR, CLZ_EXPR,
	CTZ_EXPR, POPCOUNT_EXPR and PARITY_EXPR.  Add support for calls to
	BUILT_IN_FFS, BUILT_IN_PARITY and BUILT_IN_POPCOUNT and their long
	and long long variants.

	* cp/lex.c (init_operators): Remove operator_name_info for FFS_EXPR.
	* cp/class.c (instantiate_type): Remove FFS_EXPR case.

	* f/com.c (ffecom_overlap_): Remove FFS_EXPR case.
	(ffecom_tree_canonize_ref_): Likewise.
	(ffe_truthvalue_conversion): Likewise.

	* java/expr.c (java_truthvalue_conversion): Remove FFS_EXPR case.
	* java/check-init.c (check_init): Likewise.

From-SVN: r71525