[AArch64] Relax CANNOT_CHANGE_MODE_CLASS

gcc/
	* config/aarch64/aarch64-protos.h
	(aarch64_cannot_change_mode_class_ptr): Declare.
	* config/aarch64/aarch64.c (aarch64_cannot_change_mode_class,
	aarch64_cannot_change_mode_class_ptr): New.
	* config/aarch64/aarch64.h (CANNOT_CHANGE_MODE_CLASS): Change to call
	backend hook aarch64_cannot_change_mode_class.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206804 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Yannick Moy  <moy@adacore.com>

	* adabkend.adb, ali-util.adb, errout.adb, exp_ch7.adb,
	* exp_dbug.adb, freeze.adb, lib-xref.adb, restrict.adb,
	* sem_attr.adb, sem_ch4.adb, sem_ch5.adb, sem_ch6.adb, sem_ch8.adb,
	* sem_prag.adb, sem_res.adb, sem_util.adb Rename SPARK_Mode into
	GNATprove_Mode.
	* sem_ch13.adb: Remove blank.
	* exp_spark.adb, exp_spark.ads (Expand_SPARK_Call): Only replace
	subprograms by alias for renamings, not for inherited primitive
	operations.
	* exp_util.adb (Expand_Subtype_From_Expr): Apply the expansion
	in GNATprove mode.
	(Remove_Side_Effects): Apply the removal in
	GNATprove mode, for the full analysis of expressions.
	* expander.adb (Expand): Call the light SPARK expansion in GNATprove
	mode.
	(Expander_Mode_Restore, Expander_Mode_Save_And_Set): Ignore
	save/restore actions for Expander_Active flag in GNATprove mode,
	similar to what is done in ASIS mode.
	* frontend.adb (Frontend): Generic bodies are instantiated in
	GNATprove mode.
	* gnat1drv.adb (Adjust_Global_Switches): Set operating
	mode to Check_Semantics in GNATprove mode, although a light
	expansion is still performed.
	(Gnat1drv): Set Back_End_Mode to
	Declarations_Only in GNATprove mode, and later on special case
	the GNATprove mode to continue analysis anyway.
	* lib-writ.adb (Write_ALI): Always generate ALI files in
	GNATprove mode.
	* opt.adb, opt.ads (Full_Expander_Active): Make it equivalent to
	Expander_Active.
	(SPARK_Mode): Renamed as GNATprove_Mode.
	* sem_aggr.adb (Aggregate_Constraint_Checks): Add checks in the
	tree in GNATprove_Mode.
	* sem_ch12.adb (Analyze_Package_Instantiation): Always instantiate
	body in GNATprove mode.
	(Need_Subprogram_Instance_Body): Always instantiate body in GNATprove
	mode.
	* sem_ch3.adb (Constrain_Index, Process_Range_Expr_In_Decl):
	Make sure side effects are removed in GNATprove mode.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206805 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Yannick Moy  <moy@adacore.com>

	* exp_spark.adb (Expand_SPARK_Call): Remove procedure.
	* opt.adb, opt.ads (Full_Expander_Active): Remove function.
	* checks.adb, exp_ch6.adb, exp_ch9.adb, exp_disp.adb, sem_aggr.adb,
	* sem_ch10.adb, sem_ch5.adb, sem_ch6.adb, sem_ch8.adb, sem_ch9.adb,
	* sem_disp.adb, sem_res.adb Replace Full_Expander_Active by
	Expander_Active.

2014-01-20  Yannick Moy  <moy@adacore.com>

	* sinfo.ads Update documentation of GNATprove mode.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206806 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Bob Duff  <duff@adacore.com>

	* sem_ch10.adb (Expand_With_Clause): Don't
	recurse on the prefix if the current with-ed name refers to a
	package that renames its own parent, eg "package P.Q renames P;".



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206807 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* einfo.adb (Non_Limited_View): Applies to abstract states.
	(Set_From_Limited_With): Applies to abstract states.
	(Set_Non_Limited_View): Applies to abstract states.
	(Write_Field17): Output the non-limited view of an abstract state.
	* einfo.ads: Update the comment on usage and occurrences in
	nodes for attributes From_Limited_With and Non_Limited_View.
	* sem_aux.adb (Available_View): This routine can now handle
	abstract states.
	* sem_aux.ads (Available_View): This routine can now handle
	abstract states. Update the comment on usage.
	* sem_ch8.adb (Find_Expanded_Name): Handle abstract views
	of states and variables.
	(In_Pragmas_Depends_Or_Global): New routine.
	* sem_ch10.adb (Build_Limited_Views): Implement
	abstract (limited) views of variables and states.
	(Build_Shadow_Entity): This routine is now a procedure. Add
	formal parameter Shadow. Update the comment on usage. Add
	context-specific decoration for states and variables.
	(Decorate_State): New routine.	(Decorate_Variable): New routine.
	(Find_And_Process_States): New routine.
	(Process_Declarations): Renamed to Process_Declarations_And_States.
	(Process_Declarations_And_States): Add formal parameters
	Pack and Create_Abstract_Views. Update the comment on usage.
	(Process_States): New routine.
	* sem_prag.adb (Check_Dependency_Clause): Handle abstract
	views of states and variables. Match the abstract view of a state
	against its corresponding non-abstract view.
	(Is_Matching_Input):
	Handle abstract views of states and variables. Match the abstract
	view of a state against its corresponding non-abstract view.
	(Process_Global_Item): Handle abstract views of states and
	variables.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206808 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* einfo.ads: E_Abstract_State is now part of the entities that
	can be overloaded. Update type Overloadable_Kind to reflect the
	inclusion of abstract states.
	* sem_ch6.adb (New_Overloaded_Entity): A function can now
	overload an abstract state.
	* sem_prag.adb (Analyze_Constituent): Handle the overloading
	of states by functions. Use Entity_Of to obtain the entity of
	a constituent.	(Analyze_Global_Item): Handle the overloading of
	states by functions.
	(Analyze_Initialization_Item): Handle the
	overloading of states by functions.  Use Entity_Of to obtain the
	entity of an item.
	(Analyze_Input_Item): Handle the overloading
	of states by functions. Use Entity_Of to obtain the entity of an item.
	(Analyze_Input_Output): Handle the overloading of states by functions.
	(Analyze_Refinement_Clause): Handle the overloading
	of states by functions.  Use Entity_Of to obtain the entity of an item.
	(Appears_In): Use Entity_Of to obtain the entity of an element.
	(Check_Usage): Use Entity_Of to obtain the entity of
	an item. Add a guard to prevent a crash due to a previous error.
	(Resolve_State): New routine.

2014-01-20  Yannick Moy  <moy@adacore.com>

	* spark_xrefs.ads, debug.adb, gnat1drv.adb, errout.adb, errout.ads,
	opt.ads: Minor comments updates.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206809 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Arnaud Charlet  <charlet@adacore.com>

	* sem_prag.adb (Process_Import_Or_Interface): In
	Relaxed_RM_Semantics, support old Ada 83 style of pragma Import.
	(Analyze_Pragma): Ditto for pragma Export.
	* exp_prag.adb (Expand_Pragma_Import_Or_Interface): Handle old pragma
	Import style.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206810 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Yannick Moy  <moy@adacore.com>

	* gnat1drv.adb (Gnat1drv): Call Write_ALI with Object=True in GNATprove
	mode.

2014-01-20  Pascal Obry  <obry@adacore.com>

	* g-arrspl.ads (Slice_Set): New definition (will use a copy on
	write scheme).
	* g-arrspl.adb: Adapt all routine to this new implementation.
	(Set): Copy the Slice_Set definition before reusing it.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206812 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Robert Dewar  <dewar@adacore.com>

	* sem_aggr.adb, exp_prag.adb, sem_aux.adb, sinfo.ads, sem_ch10.adb,
	checks.adb, sem_prag.adb, sem_ch12.adb, freeze.adb, g-arrspl.adb,
	expander.adb, gnat1drv.adb, exp_ch4.adb, sem_ch6.adb,
	sem_ch8.adb, exp_dist.adb: Minor reformatting.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206813 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch4.adb (Expand_N_Slice): Relocate some variables and
	constants to the "Local variables" area. Add new constant D. Add
	new variables Drange and Index_Typ.  Rename Pfx to Rep and Ptp
	to Pref_Typ and update all occurrences. Add circuitry to extract
	the discrete_range and the index type and build a range check.

2014-01-20  Arnaud Charlet  <charlet@adacore.com>

	* gnat1drv.adb (Adjust_Global_Switches): Enable
	Treat_Categorization_Errors_As_Warnings when Relaxed_RM_Semantics
	is set.

2014-01-20  Thomas Quinot  <quinot@adacore.com>

	* sem_ch5.adb, sem_ch4.adb: Minor reformatting.

2014-01-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_ch13.adb (Analyze_Aspect_Specifications):
	When aspect SPARK_Mode appears on a package body, insert the
	generated pragma at the top of the body declarations.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206814 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Tristan Gingold  <gingold@adacore.com>

	* raise-gcc.c (exception_class_eq): New function.
	(is_handled_by): Use it to compare exception classes.
	(PERSONALITY_STORAGE): Define.	(continue_unwind): New function to
	be called to return URC_CONTINUE_UNWIND.
	(personality_body): New function, extracted from PERSONALITY_ROUTINE.
	(PERSONALITY_ROUTINE): Add an implementation for the ARM unwinder.

2014-01-20  Robert Dewar  <dewar@adacore.com>

	* opt.ads: Minor comment update.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206815 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Robert Dewar  <dewar@adacore.com>

	* gnat1drv.adb: Minor comment update.

2014-01-20  Tristan Gingold  <gingold@adacore.com>

	* raise-gcc.c (PERSONALITY_FUNCTION/arm): Remove unused
	variables, comment out unused code.
	* a-exexpr-gcc.adb: Move declarations to s-excmac-gcc.ads
	* s-excmac-gcc.ads: New file, extracted from a-exexpr-gcc.adb
	* s-excmac-arm.ads: New file.

2014-01-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch4.adb (Expand_N_Slice): Remove constant D and variables
	Drange and Index_Typ. Remove the circuitry which creates a
	range check to compare the index type of the array against the
	discrete_range.
	* sem_res.adb (Resolve_Slice): Add local variable Dexpr. Update
	the circuitry which creates a range check to handle a
	discrete_range denoted by a subtype indication.

2014-01-20  Pierre-Marie Derodat  <derodat@adacore.com>

	* sinput.adb, sinput.ads (Sloc_Range): Traverse the tree of original
	nodes to get the original sloc range.

2014-01-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_prag.adb (Analyze_Pragma): Use Defining_Entity to obtain the
	entity of a [library level] package.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206817 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Robert Dewar  <dewar@adacore.com>

	* sem_attr.adb (Analyze_Attribute, case Loop_Entry): Allow
	Loop_Entry in Assert, Assert_And_Cut, and Assume pragmas.
	* sem_prag.adb (Analyze_Pragma, case Assert[_And_Cut], Assume):
	Allow Loop_Entry to be used in these pragmas if they appear in
	an appropriate context.
	(Placement_Error): Specialize error
	message for pragma Assert[_And_Cut] or pragma Assume containing
	Loop_Entry attribute.
	* a-exexpr-gcc.adb, sinput.adb: Minor reformatting.
	* s-excmac-arm.ads, s-except.ads, s-excmac-gcc.ads: Minor reformatting
	and code clean ups.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206818 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_attr.adb (Analyze_Attribute): Attributes 'Old and 'Result
	can now apply to a refined postcondition.
	* sem_ch6.adb (Analyze_Subprogram_Contract): Remove local
	variable Result_Seen. Add variables Case_Prag, Post_Prag,
	Seen_In_Case and Seen_In_Post. Update the mechanism that detects
	whether postconditions and/or constract-cases mention attribute
	'Result and introduce a post-state when applied to functions.
	(Check_Result_And_Post_State): Removed.
	* sem_prag.adb (Analyze_Pragma): Add local variable
	Result_Seen. Verify that the expression of pragma Refined_Post
	mentions attribute 'Result and introduces a post-state.
	* sem_util.ads, sem_util.adb (Check_Result_And_Post_State): New routine.

2014-01-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch7.adb (Is_Subprogram_Call): New routine.
	(Process_Transient_Objects): Make variable Must_Hook global with
	respect to all locally declared subprograms. Search the context
	for at least one subprogram call.
	(Requires_Hooking): Removed.

2014-01-20  Claire Dross  <dross@adacore.com>

	* a-cfdlli.ads a-cfhama.ads a-cfhase.ads a-cforma.ads
	* a-cforse.ads a-cofove.ads: Add pragma Annotate (GNATprove,
	External_Axiomatization);



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206819 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Ed Schonberg  <schonberg@adacore.com>

	* sem_util.adb (Check_Function_Writable_Actuals): 1) Do not
	examine code that does not come from source. The check does not
	apply to code generated for constraint checks, and such code may
	generate spurious error messages when compiled with expansion
	disabled (as in a generic unit) because side effects may not
	have been removed.
	2) Make error messages more explicit: indicate the component
	of the	construct whose value is indeterminate because of a
	call to a function with in-out parameter in another component,
	when there is no mandated order of execution between the two
	components (actuals, aggregate components, alternatives).

2014-01-20  Robert Dewar  <dewar@adacore.com>

	* gnat_rm.texi: Minor cleanup.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206820 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Robert Dewar  <dewar@adacore.com>

	* gnat_rm.texi: Document that Loop_Variant is included in
	Statement_Assertions.
	* sem_prag.adb (Check_Kind): Add Loop_Variant to
	Statement_Assertions (Check_Applicable_Policy): Add Loop_Variant
	to Statement_Assertions.

2014-01-20  Doug Rupp  <rupp@adacore.com>

	* sysdep.c (__gnat_is_file_not_found_error) [vxworks6]: Add case
	for errno ENOENT from RTP on NFS mounted file system.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206821 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Claire Dross  <dross@adacore.com>

	* a-cofove.ads (Vector): Capacity discriminant
	should be in range of the index.

2014-01-20  Thomas Quinot  <quinot@adacore.com>

	* a-caldel.ads(To_Duration), s-taasde.ads(Time_Enqueue):
	Clarify specs s-tadeca.adb(Enqueue_Calendar): Compensate for
	possible difference between epoch of Ada.Calendar clock and Ada
	real-time/tasking clock.
	* s-taprop-posix.adb: Minor comment fix.

2014-01-20  Doug Rupp  <rupp@adacore.com>

	* sysdep.c [vxworks]: Remove Vxworks version noise for RTP.

2014-01-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_attr.adb (Expand_N_Attribute_Reference): Generate validity
	checks on the prefix of attribute 'Old.
	* sem_ch3.adb (Process_Range_Expr_In_Decl): Suppress the
	generation of validity checks on a range that belongs to the
	iteration scheme of a quantified expression.
	* sem_ch5.adb (One_Bound): Suppress the generation of validity
	checks on a bound that belongs to the iteration scheme of a
	quantified expression, generate the check in all other cases.

2014-01-20  Bob Duff  <duff@adacore.com>

	* gnat_ugn.texi: Enable --pp-new by default. Minor reorganization.

2014-01-20  Ed Schonberg  <schonberg@adacore.com>

	* sem_res.adb (Resolve): When compiling a predefined unit, ignore
	interpretations that do not come from other predefined units,
	to prevent spurious ambiguities in the presence of user-defined
	operators in the context of (an instance of) a predefined unit.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206822 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Robert Dewar  <dewar@adacore.com>

	* s-taasde.ads, gnat_ugn.texi, s-tadeca.adb, sem_res.adb, s-tadeca.ads:
	Minor reformatting and code clean up.

2014-01-20  Arnaud Charlet  <charlet@adacore.com>

	* sem_cat.adb (Validate_Object_Declaration): Relax semantics
	of objects of private type if Relaxed_RM_Semantics.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206823 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Pascal Obry  <obry@adacore.com>

	* s-win32.ads (FreeLibrary): New import.

2014-01-20  Robert Dewar  <dewar@adacore.com>

	* sem_res.adb, sem_cat.adb: Minor reformatting.
	* sem_ch11.adb (Analyze_Raise_Statement): Only give warning about
	assigning to OUT parameters for the current subprogram scope.
	* exp_ch4.adb: Minor reformatting.

2014-01-20  Ed Schonberg  <schonberg@adacore.com>

	* exp_ch4.adb (Process_Transient_Object,
	Find_Enclosing_Contexts): If the top-level if-expression that
	generated the transient object is an actual in a call, the proper
	Hook_Context is a construct enclosing the call.
	* einfo.ads: Indicate that Related_Expression is used to link a
	loop variable to the container expression over which the loop
	takes place.
	(Analyze_Iterator_Specification): Set the Related_Expression of
	the loop variable in a container element iterator.
	(Note_Possible_Modification): If the variable is the loop
	variable in a container element iterator, indicate that the
	enclosing container is also modified.

2014-01-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* aspects.adb (Move_Or_Merge_Aspects): Reimplemented.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206824 138bc75d-0d04-0410-961f-82ee72b054a4
2014-01-20  Robert Dewar  <dewar@adacore.com>

	* gnat1drv.adb: Set Allow_Integer_Address in relaxed semantics mode.
	* gnat_rm.texi: Document pragma Allow_Integer_Address.
	* gnat_ugn.texi: Document pragma Allow_Integer_Address, -gnates.
	* opt.ads: New flag Allow_Integer_Address.
	* par-prag.adb: Dummy entry for pragma Allow_Integer_Address.
	* sem_ch5.adb: Minor reformatting.
	* sem_prag.adb: Implement pragma Allow_Integer_Address.
	* sem_res.adb (Resolve): Allow integer address value if
	switch set.
	* sem_util.adb: Minor reformatting.
	* snames.ads-tmpl: Add entry for pragma Allow_Integer_Address.
	* switch-c.adb: Recognize flag -gnates.
	* usage.adb: Document flag -gnates.

2014-01-20  Thomas Quinot  <quinot@adacore.com>

	* s-tadeca.adb: Fix minor typos in comment.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206825 138bc75d-0d04-0410-961f-82ee72b054a4