2010-11-27  Richard Guenther  <rguenther@suse.de>

	* gimple.c (gimple_assign_copy_p): Use gimple_assign_single_p.
	(gimple_assign_ssa_name_copy_p): Likewise.
	(gimple_assign_unary_nop_p): Use is_gimple_assign.
	(is_gimple_cast): Remove.
	(gimple_assign_single_p): Move ...
	* gimple.h (gimple_assign_single_p): ... here.
	(is_gimple_cast): Remove.
	(gimple_assign_rhs_code): Simplify.
	* gimple-fold.c (gimple_fold_builtin): Use CONVERT_EXPR_P
	instead of is_gimple_cast.
	* ipa-type-escape.c (look_for_casts): Likewise.

From-SVN: r167200