tree-ssa-structalias.c (create_variable_info_for): Do not create fields for heap vars or vars with a noalias state.

2008-08-29  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-structalias.c (create_variable_info_for): Do not
	create fields for heap vars or vars with a noalias state.
	For NO_ALIAS_ANYTHING variables add a self-constraint, not one
	from ESCAPED.

        * gfortran.fortran-torture/compile/20080806-1.f90: New testcase.

From-SVN: r139765