2012-07-04  Tobias Grosser <tobias@grosser.es>
	Michael Matz  <matz@suse.de>

	* Makefile.in (OBJS): Add graphite-optimize-isl.o.
	(graphite-optimize-isl.o): Add dependencies.
	* common.opt (floop-nest-optimize): New flag.
	* doc/invoke.texi (floop-nest-optimize): Document.
	* graphite-dependences.c (compute_deps): Export.
	* graphite-poly.h (compute_deps): Declare.
	* graphite-optimize-isl.c: New file.
	* graphite-poly.c (apply_poly_transforms): Run the loop
	nest optimizer.
	* tree-ssa-loop.c (gate_graphite_transforms): Enable graphite
	if -floop-nest-optimize is enabled.

Co-Authored-By: Michael Matz <matz@suse.de>

From-SVN: r189249