2017-01-09 Hristian Kirtchev <kirtchev@adacore.com>

	* einfo.ads, einfo.adb: Remove uses of flags Has_Default_Init_Cond,
	Is_Default_Init_Cond_Procedure, and
	Has_Inherited_Default_Init_Cond.  Add uses of flags
	Has_Own_DIC, Is_DIC_Procedure, and Has_Inherited_DIC.
	(Default_Init_Cond_Procedure): Removed.
	(DIC_Procedure): New routine.
	(Has_Default_Init_Cond): Removed.
	(Has_DIC): New routine.
	(Has_Inheritable_Invariants): The attribute applies to the base type.
	(Has_Inherited_Default_Init_Cond): Removed.
	(Has_Inherited_DIC): New routine.
	(Has_Inherited_Invariants): The attribute applies to the base type.
	(Has_Own_DIC): New routine.
	(Has_Own_Invariants): The attribute applies to the base type.
	(Is_Default_Init_Cond_Procedure): Removed.
	(Is_DIC_Procedure): New routine.
	(Set_Default_Init_Cond_Procedure): Removed.
	(Set_DIC_Procedure): New routine.
	(Set_Has_Default_Init_Cond): Removed.
	(Set_Has_Inheritable_Invariants): The attribute applies
	to the base type.
	(Set_Has_Inherited_Default_Init_Cond): Removed.
	(Set_Has_Inherited_DIC): New routine.
	(Set_Has_Inherited_Invariants): The attribute applies to the base type.
	(Set_Has_Own_DIC): New routine.
	(Set_Has_Own_Invariants): The attribute applies to the base type.
	(Set_Is_Default_Init_Cond_Procedure): Removed.
	(Set_Is_DIC_Procedure): New routine.
	(Write_Entity_Flags): Update the output of all flags related to
	default initial condition.
	* exp_ch3.adb (Expand_N_Object_Declaration): Update the generation
	of the call to the DIC procedure.
	(Freeze_Type): Generate the body of the DIC procedure.
	* exp_ch7.adb (Build_Invariant_Procedure_Body): Replace
	all occurrences of Create_Append with Append_New_To. Do
	not generate an invariant procedure for a class-wide type.
	The generated body acts as a freeze action of the working type.
	(Build_Invariant_Procedure_Declaration): Do not generate an
	invariant procedure for a class-wide type.
	(Create_Append): Removed.
	* exp_util.adb: Add with and use clauses for Sem_Ch3, sem_ch6,
	sem_Ch12, Sem_Disp, and GNAT.HTable. Move the handling of
	class-wide pre/postcondition description and data structures from
	Sem_Prag.
	(Build_Class_Wide_Expression): Moved from Sem_Prag.
	(Build_DIC_Call): New routine.
	(Build_DIC_Procedure_Body): New routine.
	(Build_DIC_Procedure_Declaration): New routine.
	(Entity_Hash): Moved from Sem_Prag.
	(Find_DIC_Type): New routine.
	(Update_Primitives_Mapping): Reimplemented.
	(Update_Primitives_Mapping_Of_Types): New routine.
	* exp_util.ads (Build_Class_Wide_Expression): Moved from Sem_Prag.
	(Build_DIC_Call): New routine.
	(Build_DIC_Procedure_Body): New routine.
	(Build_DIC_Procedure_Declaration): New routine.
	(Update_Primitives_Mapping): Moved from Sem_Prag.
	(Update_Primitives_Mapping_Of_Types): New routine.
	* nlists.adb (Append_New): New routine.
	(Append_New_To): New routine.
	* nlists.ads (Append_New): New routine.
	(Append_New_To): New routine.
	* sem_ch3.adb (Analyze_Declarations): Do not generate the bodies
	of DIC procedures here. This is now done at the end of the
	visible declarations, private declarations, and at the freeze
	point of a type.
	(Analyze_Private_Extension_Declaration):
	A private extension inherits the DIC pragma of a parent type.
	(Analyze_Subtype_Declaration): No need to propagate invariant
	attributes to a subtype as those apply to the base type.
	(Build_Derived_Record_Type): No need to inherit invariants here
	as this is now done in Build_Derived_Type.
	(Build_Derived_Type): Inherit both the DIC pragma and invariants from
	a parent type.
	(Process_Full_View): Update the propagation of DIC attributes.
	(Propagate_Default_Init_Cond_Attributes): Removed.
	* sem_ch7.adb Add with and use clauses for Exp_Util.
	(Analyze_Package_Specification): Create the body of the DIC
	procedure at the end of the visible and private declarations.
	(Preserve_Full_Attributes): Propagate DIC attributes.
	* sem_ch9.adb (Analyze_Protected_Type_Declaration): Propagate
	DIC attributes.
	(Analyze_Task_Type_Declaration): Propagate DIC attributes.
	* sem_elab.adb (Check_A_Call): Update the call to
	Is_Nontrivial_Default_Init_Cond_Procedure.
	* sem_prag.adb Remove the with and use clauses for
	GNAT.HTable. Move the handling of class- wide pre/postcondition
	description and data structures to Exp_Util.
	(Analyze_Pragma): Create the declaration of the DIC procedure. There
	is no need to propagate invariant-related attributes at this point
	as this is done in Build_Invariant_Procedure_Declaration.
	(Build_Class_Wide_Expression): Moved to Exp_Util.
	(Entity_Hash): Moved to Exp_Util.
	(Update_Primitives_Mapping): Moved to Exp_Util.
	* sem_prag.ads (Build_Class_Wide_Expression): Moved to Exp_Util.
	(Update_Primitives_Mapping): Moved to Exp_Util.
	* sem_util.adb: Remove with and use clauses for Ghost
	and Sem_Ch13.
	(Build_Default_Init_Cond_Call): Removed.
	(Build_Default_Init_Cond_Procedure_Bodies): Removed.
	(Build_Default_Init_Cond_Procedure_Declaration): Removed.
	(Get_Views): Reimplemented.
	(Has_Full_Default_Initialization): Reimplement the section on DIC.
	(Inherit_Default_Init_Cond_Procedure): Removed.
	(Is_Nontrivial_Default_Init_Cond_Procedure): Removed.
	(Is_Nontrivial_DIC_Procedure): New routine.
	(Is_Verifiable_DIC_Pragma): New routine.
	(Propagate_DIC_Attributes): New routine.
	* sem_util.ads (Build_Default_Init_Cond_Call): Removed.
	(Build_Default_Init_Cond_Procedure_Bodies): Removed.
	(Build_Default_Init_Cond_Procedure_Declaration): Removed.
	(Inherit_Default_Init_Cond_Procedure): Removed.
	(Is_Nontrivial_Default_Init_Cond_Procedure): Removed.
	(Is_Nontrivial_DIC_Procedure): New routine.
	(Is_Verifiable_DIC_Pragma): New routine.
	(Propagate_DIC_Attributes): New routine.
	* sem_warn.adb (Is_OK_Fully_Initialized): Reimplement the section
	on DIC.
	* sinfo.ads, sinfo.adb: Add new attribute Expression_Copy along with
	usage in nodes.
	(Expression_Copy): New routine along with pragma Inline.
	(Set_Expression_Copy): New routine along with pragma Inline.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@244224 138bc75d-0d04-0410-961f-82ee72b054a4

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