2013-09-16 Richard Biener <rguenther@suse.de>
* tree-loop-distribution.c (enum rdg_dep_type): Add control_dd.
(dot_rdg_1): Handle control_dd.
(create_edge_for_control_dependence): New function.
(create_rdg_edges): Add control dependences if asked for.
(build_rdg): Likewise.
(generate_loops_for_partition): If there are not necessary
control stmts remove all their dependencies.
(collect_condition_stmts, rdg_flag_loop_exits): Remove.
(distribute_loop): Pass on control dependences.
(tree_loop_distribution): Compute control dependences and remove
restriction on number of loop nodes.
* gcc.dg/tree-ssa/ldist-22.c: New testcase.
From-SVN: r202619
