canonicalize_loop_ivs should add the IV bump in loop->header.

canonicalize_loop_ivs should add the IV bump in loop->header.

2010-03-16  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-sese-to-poly.c (graphite_loop_normal_form): Add the IV bump
	in loop->header.
	* tree-flow.h (canonicalize_loop_ivs): Updated declaration.
	* tree-parloops.c (gen_parallel_loop): Add the IV bump in loop->latch.
	* tree-ssa-loop-manip.c (canonicalize_loop_ivs): Add a new parameter
	to switch between adding the IV bump in loop->latch or in loop->header.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@157885 138bc75d-0d04-0410-961f-82ee72b054a4