2013-10-13 Hristian Kirtchev <kirtchev@adacore.com>

	* einfo.adb: Add node/list usage for Refined_State
	and Refinement_Constituents.
	(Get_Pragma): Update the
	initialization of Is_CDG to include Refined_Global and
	Refined_Depends. Rename constant Delayed to In_Contract and update
	all of its occurrences.
	(Is_Non_Volatile_State): New routine.
	(Is_Volatile_State): Removed.
	(Refined_State): New routine.
	(Refinement_Constituents): New routine.
	(Set_Refined_State): New routine.
	(Set_Refinement_Constituents): New routine.
	(Write_Field8_Name): Add output for Refinement_Constituents.
	(Write_Field10_Name): Add output for Refined_State.
	* einfo.ads: Add new synthesized attribute Is_Non_Volatile_State.
	Remove synthesized attribute Is_Volatile_State.  Add new
	attributes Refined_State and Refinement_Constituents along with
	usage in nodes.
	(Get_Pragma): Update the comment on usage.
	(Is_Non_Volatile_State): New routine.
	(Is_Volatile_State): Removed.
	(Refined_State): New routine and pragma Inline.
	(Refinement_Constituents): New routine and pragma Inline.
	(Set_Refined_State): New routine and pragma Inline.
	(Set_Refinement_Constituents): New routine and pragma Inline.
	* elists.ads, elists.adb (Clone): Removed.
	(New_Copy_Elist): New routine.
	(Remove): New routine.
	* sem_ch3.adb (Analyze_Declarations): Use Defining_Entity
	to get the entity of the subprogram [body].
	(Analyze_Object_Declaration): Add initialization for
	Refined_State.
	* sem_ch6.adb (Analyze_Subprogram_Body_Contract): Add processing
	for Refined_Global and Refined_Depends. Emit an error when
	the body requires Refined_Global, but the aspect/pragma is
	not present.
	* sem_ch6.ads (Analyze_Subprogram_Body_Contract): Change
	procedure signature and add comment on usage.
	* sem_ch13.adb (Analyze_Aspect_Specifications): Add processing
	for aspect Refined_Global.
	* sem_prag.adb (Analyze_Abstract_State): Add initialization
	of attributes Refined_State and Refinement_Constituents.
	(Analyze_Depends_In_Decl_Part, Analyze_Global_In_Decl_Part,
	Analyze_Contract_Cases_In_Decl_Part): Remove local
	constant Arg1.
	(Analyze_Pragma): Add processing for pragma
	Refined_Global. The analysis of Refined_Post and Refined_Pre
	has been merged. Update an error message in the processing of
	pragma Refined_State.
	(Analyze_Refined_Global_In_Decl_Part): Provide implementation.
	(Analyze_Refined_Pragma): New routine.
	(Analyze_Refined_Pre_Post_Condition): Removed.
	(Analyze_Refined_State_In_Decl_Part): Update the call to Clone.
	(Analyze_Refinement_Clause): Make State_Id visible to all
	nested subprogram.
	(Check_Matching_Constituent): Establish
	a relation between a refined state and its constituent.
	(Collect_Hidden_States_In_Decls): Remove ??? comment. Look at
	the entity of the object declaration to establish its kind.
	* sem_util.adb: Alphabetize with and use clauses.
	(Contains_Refined_State): New routine.
	* sem_util.ads (Contains_Refined_State): New routine.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203504 138bc75d-0d04-0410-961f-82ee72b054a4

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