2008-03-26 Javier Miranda <miranda@adacore.com>

2008-03-26  Javier Miranda  <miranda@adacore.com>
	    Robert Dewar  <dewar@adacore.com>

	* exp_attr.adb (N_Pragma): Chars field removed.
	(Expand_N_Attribute_Reference): If the designated type associated with
	attribute 'Unrestricted_Access is a subprogram entity then replace it
	by an E_Subprogram_Type itype.
	Implement attribute Old

	* sem_attr.ads (Attribute_Class_Array): Move to snames.ads

	* sem_attr.adb (Build_Access_Subprogram_Itype): Add documentation.
	Replace call to
	New_Internal_Entity by call to Create_Itype to centralize calls
	building itypes, ad propagate the convention of the designated
	subprogram. In addition, disable the machinery cleaning constant
	indications from all entities in current scope when 'Unrestricted_Access
	corresponds with a node initializing a dispatch table slot.
	(Analyze_Attribute): Parameterless attributes returning a string or a
	type will not be called with improper arguments, so we can remove junk
	code that was dealing with this case.
	Implement attribute Old

	* snames.ads, snames.h, snames.adb: Add entries for attribute Old
	Add entry for pragma Optimize_Alignment
	New standard names Sync and Synchronize

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@133559 138bc75d-0d04-0410-961f-82ee72b054a4