Fix gamess: the only constant phi nodes with one argument are is_gimple_min_invariant and SSA_NAME_IS_DEFAULT_DEF.

2010-07-28  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-sese-to-poly.c (rewrite_close_phi_out_of_ssa): The only
	constant phi nodes with one argument are is_gimple_min_invariant
	and SSA_NAME_IS_DEFAULT_DEF.

	* gfortran.dg/graphite/id-22.f: New.

From-SVN: r163168