df.h (web_entry_base): Replace existing struct web_entry with a new class web_entry_base with only the...

2014-08-20  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* df.h (web_entry_base): Replace existing struct web_entry with a
	new class web_entry_base with only the predecessor member.
	(unionfind_root): Remove declaration and move to class member.
	(unionfind_union): Remove declaration and move to friend
	function.
	(union_defs): Remove declaration.
	* web.c (web_entry_base::unionfind_root): Modify to be member
	function and adjust accessors.
	(unionfind_union): Modify to be friend function and adjust
	accessors.
	(web_entry): New subclass of web_entry_base containing the reg
	member.
	(union_match_dups): Modify for struct -> class changes.
	(union_defs): Likewise.
	(entry_register): Likewise.
	(pass_web::execute): Likewise.

From-SVN: r214242