2009-11-28  David Binderman  <dcb314@hotmail.com>

	* ira-color.c (put_allocno_into_bucket): Remove set but not used
	local variable hard_regs_num.
	* ira-lives.c (process_single_reg_class_operands): Remove cover_class.
	* loop-unswitch.c (unswitch_loop): Remove zero_bitmap.
	* lower-subreg.c (decompose_multiword_subregs): Remove next.

From-SVN: r154720