cfgcleanup.c (try_optimize_cfg): Replace call to delete_insn_chain by call to delete_...

cfgcleanup.c (try_optimize_cfg): Replace call to delete_insn_chain by call to delete_insn.

2012-04-14  Tom de Vries  <tom@codesourcery.com>

	* cfgcleanup.c (try_optimize_cfg): Replace call to delete_insn_chain by
	call to delete_insn.  Remove code to reorder BASIC_BLOCK note and
	DELETED_LABEL note, and move it to ...
	* cfgrtl.c (delete_insn): ... here.  Change return type to void.
	(delete_insn_and_edges): Likewise.
	(delete_insn_chain): Handle new return type of delete_insn.  Delete
	chain backwards rather than forwards.
	* rtl.h (delete_insn, delete_insn_and_edges): Change return type to
	void.
	* cfglayout.c (fixup_reorder_chain): Delete unused label.

From-SVN: r186451