Preparation for PR rtl-optimization/20070 / part1

2005-12-07  J"orn Rennecke <joern.rennecke@st.com>

	Preparation for PR rtl-optimization/20070 / part1
	* basic-block.h (insns_match_p, flow_find_cross_jump): Declare.
	* cfgcleanup.c (condjump_equiv_p): New function, broken out of
	outgoing_edges_match.
	(outgoing_edges_match): Use condjump_equiv_p.
	(merge_memattrs, insns_match_p, flow_find_cross_jump): Move from here
	into..
	* struct-equiv.c: New file.
	(death_notes_match_p) New function, broken out of insns_match_p.
	* Makefile.in (OBJS-common): Add struct-equiv.o.
	(struct-equiv.o): New target.

From-SVN: r108164