tree-scalar-evolution.c: Document instantiate_scev.

tree-scalar-evolution.c: Document instantiate_scev.

2008-05-09  Jan Sjodin  <jan.sjodin@amd.com>
	    Sebastian Pop  <sebastian.pop@amd.com>

	* tree-scalar-evolution.c: Document instantiate_scev.
	(instantiate_parameters_1): Renamed instantiate_scev_1.
	Don't use the same loop for instantiation_loop and evolution_loop.
	(instantiate_scev): New.
	(instantiate_parameters): Moved...
	(resolve_mixers): Update call to instantiate_scev_1 to pass the
	same loop twice.  Maintains the semantics for this function.
	* tree-scalar-evolution.h (instantiate_scev): Declare.
	(instantiate_parameters): ...here.  Now static inline.
	* tree-data-ref.c (dr_analyze_indices): Call instantiate_scev
	instead of resolve_mixers.

Co-Authored-By: Sebastian Pop <sebastian.pop@amd.com>
From-SVN: r135116