tree-ssa-structalias.c (could_have_pointers): Tidy.

tree-ssa-structalias.c (could_have_pointers): Tidy.

	* tree-ssa-structalias.c (could_have_pointers): Tidy.
	(get_constraint_for): Likewise.
	(do_structure_copy): Likewise.
	(find_func_aliases): Fix references to MODIFY_EXPR.
	(intra_create_variable_infos): Tidy.
	* tree-ssa-operands.c (add_virtual_operand): Add argument
	IS_CALL_SITE.
	When adding members of alias sets, if IS_CALL_SITE is true and
	the symbol is not call-clobbered, skip it.
	Adjust all callers.

testsuite/ChangeLog

	* gcc.dg/tree-ssa/20070302-1.c: New test.

From-SVN: r122484