2006-01-16  Gabor Loki <loki@gcc.gnu.org>

	* rtl-factoring.c : Add sequence abstraction algorithm.
	* cfgcleanup.c (outgoing_edges_match): Extra checks.
	(try_crossjump_to_edge): Avoid deleting preserve label when redirecting
	ABNORMAL edges.
	(block_has_preserve_label): New function.
	* common.opt: Register new pass.
	* Makefile.in: Ditto.
	* passes.c: Ditto.
	* timevar.def: Ditto.
	* tree-pass.h: Ditto.
	* emit-rtl.c (make_jump_insn_raw): Remove forward decl.
	* rtl.h (make_jump_insn_raw): Add forward decl.
	* doc/invoke.texi: Add documentation for
																	                  -frtl-abstract-sequences.

From-SVN: r109750