Fix PR45948: add ssa defs from builtin partitions to the last partition.

Fix PR45948: add ssa defs from builtin partitions to the last partition.

2010-12-14  Sebastian Pop  <sebastian.pop@amd.com>

	PR tree-optimization/45948
	* tree-loop-distribution.c (ssa_name_has_uses_outside_loop_p): New.
	(stmt_has_scalar_dependences_outside_loop): New.
	(stmt_generated_in_another_partition): New.
	(add_scalar_computations_to_partition): New.
	(rdg_build_partitions): Call add_scalar_computations_to_partition.

	* gcc.dg/tree-ssa/ldist-pr45948.c: New.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@167842 138bc75d-0d04-0410-961f-82ee72b054a4