hppa: Revise REG+D address support to allow long displacements before reload
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1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- E I N F O . U T I L S --
6 -- --
7 -- S p e c --
8 -- --
9 -- Copyright (C) 2020-2023, Free Software Foundation, Inc. --
10 -- --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
20 -- --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
23 -- --
24 ------------------------------------------------------------------------------
26 with Einfo.Entities; use Einfo.Entities;
27 with Sinfo.Nodes; use Sinfo.Nodes;
29 package Einfo.Utils is
31 -------------------------------------------
32 -- Aliases/Renamings of Renamed_Or_Alias --
33 -------------------------------------------
35 -- See the comment in einfo.ads, "Renaming and Aliasing", which is somewhat
36 -- incorrect. Each of the following calls [Set_]Renamed_Or_Alias. Alias and
37 -- Renamed_Entity are fields of nonobject Entity_Ids, and the value of the
38 -- field is Entity_Id. Alias is only for callable entities and subprogram
39 -- types. We sometimes call Set_Renamed_Entity and then expect Alias to
40 -- return the value set. Renamed_Object is a field of Entity_Ids that are
41 -- objects, and it returns an expression, because you can rename things
42 -- like "X.all(J).Y". Renamings of entries and subprograms can also be
43 -- expressions, but those use different mechanisms; the fields here are not
44 -- used.
46 function Alias (N : Entity_Id) return Entity_Id with Inline;
47 procedure Set_Alias (N : Entity_Id; Val : Entity_Id) with Inline;
48 function Renamed_Entity (N : Entity_Id) return Entity_Id with Inline;
49 procedure Set_Renamed_Entity (N : Entity_Id; Val : Entity_Id) with Inline;
50 function Renamed_Object (N : Entity_Id) return Node_Id with Inline;
51 procedure Set_Renamed_Object (N : Entity_Id; Val : Node_Id) with Inline;
53 function Renamed_Entity_Or_Object (N : Entity_Id) return Node_Id
54 with Inline;
55 -- This getter is used when we don't know statically whether we want to
56 -- call Renamed_Entity or Renamed_Object.
58 procedure Set_Renamed_Object_Of_Possibly_Void
59 (N : Entity_Id; Val : Node_Id) with Inline;
60 -- Set_Renamed_Object doesn't allow Void; this is used in the rare cases
61 -- where we set the field of an entity that might be Void. It might be a
62 -- good idea to get rid of calls to this.
64 -------------------
65 -- Type Synonyms --
66 -------------------
68 -- The following type synonyms are used to tidy up the function and
69 -- procedure declarations that follow. Note that E and N have predicates
70 -- ensuring the correct kind; we use Entity_Id or Node_Id when the
71 -- predicates can't be satisfied.
73 subtype B is Boolean;
74 subtype C is Component_Alignment_Kind;
75 subtype E is N_Entity_Id;
76 subtype F is Float_Rep_Kind;
77 subtype M is Mechanism_Type;
78 subtype N is Node_Id with Predicate => N /= Empty and then N not in E;
79 subtype U is Uint;
80 subtype R is Ureal;
81 subtype L is Elist_Id;
82 subtype S is List_Id;
84 -------------------------------
85 -- Classification Attributes --
86 -------------------------------
88 -- These functions provide a convenient functional notation for testing
89 -- whether an Ekind value belongs to a specified kind, for example the
90 -- function Is_Elementary_Type tests if its argument is in Elementary_Kind.
91 -- In some cases, the test is of an entity attribute (e.g. in the case of
92 -- Is_Generic_Type where the Ekind does not provide the needed
93 -- information).
95 function Is_Access_Object_Type (Id : E) return B with Inline;
96 function Is_Access_Type (Id : E) return B with Inline;
97 function Is_Access_Protected_Subprogram_Type (Id : E) return B with Inline;
98 function Is_Access_Subprogram_Type (Id : E) return B with Inline;
99 function Is_Aggregate_Type (Id : E) return B with Inline;
100 function Is_Anonymous_Access_Type (Id : E) return B with Inline;
101 function Is_Array_Type (Id : E) return B with Inline;
102 function Is_Assignable (Id : E) return B with Inline;
103 function Is_Class_Wide_Type (Id : E) return B with Inline;
104 function Is_Composite_Type (Id : E) return B with Inline;
105 function Is_Concurrent_Body (Id : E) return B with Inline;
106 function Is_Concurrent_Type (Id : E) return B with Inline;
107 function Is_Decimal_Fixed_Point_Type (Id : E) return B with Inline;
108 function Is_Digits_Type (Id : E) return B with Inline;
109 function Is_Discrete_Or_Fixed_Point_Type (Id : E) return B with Inline;
110 function Is_Discrete_Type (Id : E) return B with Inline;
111 function Is_Elementary_Type (Id : E) return B with Inline;
112 function Is_Entry (Id : E) return B with Inline;
113 function Is_Enumeration_Type (Id : E) return B with Inline;
114 function Is_Fixed_Point_Type (Id : E) return B with Inline;
115 function Is_Floating_Point_Type (Id : E) return B with Inline;
116 function Is_Formal (Id : E) return B with Inline;
117 function Is_Formal_Object (Id : E) return B with Inline;
118 function Is_Generic_Subprogram (Id : E) return B with Inline;
119 function Is_Generic_Unit (Id : E) return B with Inline;
120 function Is_Ghost_Entity (Id : E) return B with Inline;
121 function Is_Incomplete_Or_Private_Type (Id : E) return B with Inline;
122 function Is_Incomplete_Type (Id : E) return B with Inline;
123 function Is_Integer_Type (Id : E) return B with Inline;
124 function Is_Modular_Integer_Type (Id : E) return B with Inline;
125 function Is_Named_Access_Type (Id : E) return B with Inline;
126 function Is_Named_Number (Id : E) return B with Inline;
127 function Is_Numeric_Type (Id : E) return B with Inline;
128 function Is_Object (Id : E) return B with Inline;
129 function Is_Ordinary_Fixed_Point_Type (Id : E) return B with Inline;
130 function Is_Overloadable (Id : E) return B with Inline;
131 function Is_Private_Type (Id : E) return B with Inline;
132 function Is_Protected_Type (Id : E) return B with Inline;
133 function Is_Real_Type (Id : E) return B with Inline;
134 function Is_Record_Type (Id : E) return B with Inline;
135 function Is_Scalar_Type (Id : E) return B with Inline;
136 function Is_Signed_Integer_Type (Id : E) return B with Inline;
137 function Is_Subprogram (Id : E) return B with Inline;
138 function Is_Subprogram_Or_Entry (Id : E) return B with Inline;
139 function Is_Subprogram_Or_Generic_Subprogram (Id : E) return B with Inline;
140 function Is_Task_Type (Id : E) return B with Inline;
141 function Is_Type (Id : E) return B with Inline;
143 -------------------------------------
144 -- Synthesized Attribute Functions --
145 -------------------------------------
147 -- The functions in this section synthesize attributes from the tree,
148 -- so they do not correspond to defined fields in the entity itself.
150 function Address_Clause (Id : E) return Node_Id with Inline;
151 function Aft_Value (Id : E) return U;
152 function Alignment_Clause (Id : E) return Node_Id with Inline;
153 function Base_Type (Id : E) return E with Inline;
154 function Declaration_Node (Id : E) return Node_Id;
155 function Designated_Type (Id : E) return E;
156 function Entry_Index_Type (Id : E) return E;
157 function First_Component (Id : E) return Entity_Id;
158 function First_Component_Or_Discriminant (Id : E) return Entity_Id;
159 function First_Formal (Id : E) return Entity_Id;
160 function First_Formal_With_Extras (Id : E) return Entity_Id;
162 function Float_Rep
163 (N : Entity_Id) return F with Inline, Pre =>
164 N in E_Void_Id
165 | Float_Kind_Id;
166 procedure Set_Float_Rep
167 (Ignore_N : Entity_Id; Ignore_Val : F) with Inline, Pre =>
168 Ignore_N in E_Void_Id
169 | Float_Kind_Id;
171 function Has_Attach_Handler (Id : E) return B;
172 function Has_DIC (Id : E) return B;
173 function Has_Entries (Id : E) return B;
174 function Has_Foreign_Convention (Id : E) return B with Inline;
175 function Has_Interrupt_Handler (Id : E) return B;
176 function Has_Invariants (Id : E) return B;
177 function Has_Limited_View (Id : E) return B;
178 function Has_Non_Limited_View (Id : E) return B with Inline;
179 function Has_Non_Null_Abstract_State (Id : E) return B;
180 function Has_Non_Null_Visible_Refinement (Id : E) return B;
181 function Has_Null_Abstract_State (Id : E) return B;
182 function Has_Null_Visible_Refinement (Id : E) return B;
183 function Implementation_Base_Type (Id : E) return E;
184 function Is_Base_Type (Id : E) return B with Inline;
185 -- Note that Is_Base_Type returns True for nontypes
186 function Is_Boolean_Type (Id : E) return B with Inline;
187 function Is_Constant_Object (Id : E) return B with Inline;
188 function Is_Controlled (Id : E) return B with Inline;
189 function Is_Discriminal (Id : E) return B with Inline;
190 function Is_Dynamic_Scope (Id : E) return B;
191 function Is_Elaboration_Target (Id : E) return B;
192 function Is_External_State (Id : E) return B;
193 function Is_Finalizer (Id : E) return B with Inline;
194 function Is_Full_Access (Id : E) return B with Inline;
195 function Is_Null_State (Id : E) return B;
196 function Is_Package_Or_Generic_Package (Id : E) return B with Inline;
197 function Is_Packed_Array (Id : E) return B with Inline;
198 function Is_Prival (Id : E) return B with Inline;
199 function Is_Protected_Component (Id : E) return B with Inline;
200 function Is_Protected_Interface (Id : E) return B;
201 function Is_Protected_Record_Type (Id : E) return B with Inline;
202 function Is_Relaxed_Initialization_State (Id : E) return B;
203 function Is_Standard_Character_Type (Id : E) return B;
204 function Is_Standard_String_Type (Id : E) return B;
205 function Is_String_Type (Id : E) return B with Inline;
206 function Is_Synchronized_Interface (Id : E) return B;
207 function Is_Synchronized_State (Id : E) return B;
208 function Is_Task_Interface (Id : E) return B;
209 function Is_Task_Record_Type (Id : E) return B with Inline;
210 function Is_Wrapper_Package (Id : E) return B with Inline;
211 function Last_Formal (Id : E) return Entity_Id;
212 function Machine_Emax_Value (Id : E) return U;
213 function Machine_Emin_Value (Id : E) return U;
214 function Machine_Mantissa_Value (Id : E) return U;
215 function Machine_Radix_Value (Id : E) return U;
216 function Model_Emin_Value (Id : E) return U;
217 function Model_Epsilon_Value (Id : E) return R;
218 function Model_Mantissa_Value (Id : E) return U;
219 function Model_Small_Value (Id : E) return R;
220 function Next_Component (Id : E) return Entity_Id;
221 function Next_Component_Or_Discriminant (Id : E) return Entity_Id;
222 function Next_Discriminant (Id : E) return Entity_Id;
223 function Next_Formal (Id : E) return Entity_Id;
224 function Next_Formal_With_Extras (Id : E) return Entity_Id;
225 function Next_Index (Id : N) return Node_Id;
226 function Next_Literal (Id : E) return Entity_Id;
227 function Next_Stored_Discriminant (Id : E) return Entity_Id;
228 function Number_Dimensions (Id : E) return Pos;
229 function Number_Entries (Id : E) return Nat;
230 function Number_Formals (Id : E) return Nat;
231 function Object_Size_Clause (Id : E) return Node_Id;
232 function Parameter_Mode (Id : E) return Formal_Kind;
233 function Partial_Refinement_Constituents (Id : E) return L;
234 function Primitive_Operations (Id : E) return L;
235 function Root_Type (Id : E) return E;
236 function Safe_Emax_Value (Id : E) return U;
237 function Safe_First_Value (Id : E) return R;
238 function Safe_Last_Value (Id : E) return R;
239 function Size_Clause (Id : E) return Node_Id with Inline;
240 function Stream_Size_Clause (Id : E) return N with Inline;
241 function Type_High_Bound (Id : E) return N with Inline;
242 function Type_Low_Bound (Id : E) return N with Inline;
243 function Underlying_Type (Id : E) return Entity_Id;
245 function Scope_Depth (Id : Scope_Kind_Id) return U with Inline;
246 function Scope_Depth_Set (Id : Scope_Kind_Id) return B with Inline;
248 function Scope_Depth_Default_0 (Id : Scope_Kind_Id) return U;
249 -- In rare cases, the Scope_Depth_Value (queried by Scope_Depth) is
250 -- not correctly set before querying it; this may be used instead of
251 -- Scope_Depth in such cases. It returns Uint_0 if the Scope_Depth_Value
252 -- has not been set. See documentation in Einfo.
254 ------------------------------------------
255 -- Type Representation Attribute Fields --
256 ------------------------------------------
258 function Known_Alignment (E : Entity_Id) return B with Inline;
259 procedure Reinit_Alignment (Id : E) with Inline;
260 procedure Copy_Alignment (To, From : E);
262 function Known_Component_Bit_Offset (E : Entity_Id) return B with Inline;
263 function Known_Static_Component_Bit_Offset (E : Entity_Id) return B
264 with Inline;
266 function Known_Component_Size (E : Entity_Id) return B with Inline;
267 function Known_Static_Component_Size (E : Entity_Id) return B with Inline;
269 function Known_Esize (E : Entity_Id) return B with Inline;
270 function Known_Static_Esize (E : Entity_Id) return B with Inline;
271 procedure Reinit_Esize (Id : E) with Inline;
272 procedure Copy_Esize (To, From : E);
274 function Known_Normalized_First_Bit (E : Entity_Id) return B with Inline;
275 function Known_Static_Normalized_First_Bit (E : Entity_Id) return B
276 with Inline;
278 function Known_Normalized_Position (E : Entity_Id) return B with Inline;
279 function Known_Static_Normalized_Position (E : Entity_Id) return B
280 with Inline;
282 function Known_RM_Size (E : Entity_Id) return B with Inline;
283 function Known_Static_RM_Size (E : Entity_Id) return B with Inline;
284 procedure Reinit_RM_Size (Id : E) with Inline;
285 procedure Copy_RM_Size (To, From : E);
287 -- NOTE: "known" here does not mean "known at compile time". It means that
288 -- the compiler has computed the value of the field (either by default, or
289 -- by noting some representation clauses), and the field has not been
290 -- reinitialized.
292 -- We document the Esize functions here; the others above are analogous:
294 -- Known_Esize: True if Set_Esize has been called without a subsequent
295 -- Reinit_Esize.
297 -- Known_Static_Esize: True if Known_Esize and the Esize is known at
298 -- compile time. (We're not using "static" in the Ada RM sense here. We
299 -- are using it to mean "known at compile time".)
301 -- Reinit_Esize: Set the Esize field to its initial unknown state.
303 -- Copy_Esize: Copies the Esize from From to To; Known_Esize (From) may
304 -- be False, in which case Known_Esize (To) becomes False.
306 -- Esize: This is the normal automatically-generated getter for Esize,
307 -- declared elsewhere. Returns No_Uint if not Known_Esize.
309 -- Set_Esize: This is the normal automatically-generated setter for
310 -- Esize. After a call to this, Known_Esize is True. It is an error
311 -- to call this with a No_Uint value.
313 -- Normally, we call Set_Esize first, and then query Esize (and similarly
314 -- for other fields). However in some cases, we need to check Known_Esize
315 -- before calling Esize, because the code is written in such a way that we
316 -- don't know whether Set_Esize has already been called.
318 -- In two cases, Known_Static_Esize and Known_Static_RM_Size, there is one
319 -- more consideration, which is that we always return False for generic
320 -- types. Within a template, the size can look Known_Static, because of the
321 -- fake size values we put in template types, but they are not really
322 -- Known_Static and anyone testing if they are Known_Static within the
323 -- template should get False as a result to prevent incorrect assumptions.
325 ---------------------------------------------------------
326 -- Procedures for setting multiple of the above fields --
327 ---------------------------------------------------------
329 procedure Reinit_Component_Location (Id : E);
330 -- Initializes all fields describing the location of a component
331 -- (Normalized_Position, Component_Bit_Offset, Normalized_First_Bit,
332 -- Esize) to all be Unknown.
334 procedure Init_Size (Id : E; V : Int);
335 -- Initialize both the Esize and RM_Size fields of E to V
337 procedure Reinit_Size_Align (Id : E);
338 -- This procedure initializes both size fields and the alignment
339 -- field to all be Unknown.
341 procedure Reinit_Object_Size_Align (Id : E);
342 -- Same as Reinit_Size_Align except RM_Size field (which is only for types)
343 -- is unaffected.
345 ---------------------------------------------------
346 -- Access to Subprograms in Subprograms_For_Type --
347 ---------------------------------------------------
349 -- Now that we have variable-sized nodes, it might be possible to replace
350 -- the following with regular fields, and get rid of the flags used to mark
351 -- these kinds of subprograms.
353 function Is_Partial_DIC_Procedure (Id : E) return B;
355 function DIC_Procedure (Id : E) return Entity_Id;
356 function Partial_DIC_Procedure (Id : E) return Entity_Id;
357 function Invariant_Procedure (Id : E) return Entity_Id;
358 function Partial_Invariant_Procedure (Id : E) return Entity_Id;
359 function Predicate_Function (Id : E) return Entity_Id;
361 procedure Set_DIC_Procedure (Id : E; V : E);
362 procedure Set_Partial_DIC_Procedure (Id : E; V : E);
363 procedure Set_Invariant_Procedure (Id : E; V : E);
364 procedure Set_Partial_Invariant_Procedure (Id : E; V : E);
365 procedure Set_Predicate_Function (Id : E; V : E);
367 ---------------
368 -- Iterators --
369 ---------------
371 -- Next_xxx (obj) is equivalent to obj := Next_xxx (obj)
373 procedure Next_Component (N : in out Node_Id) with Inline;
374 procedure Next_Component_Or_Discriminant (N : in out Node_Id) with Inline;
375 procedure Next_Discriminant (N : in out Node_Id) with Inline;
376 procedure Next_Formal (N : in out Node_Id) with Inline;
377 procedure Next_Formal_With_Extras (N : in out Node_Id) with Inline;
378 procedure Next_Index (N : in out Node_Id) with Inline;
379 procedure Next_Inlined_Subprogram (N : in out Node_Id) with Inline;
380 procedure Next_Literal (N : in out Node_Id) with Inline;
381 procedure Next_Stored_Discriminant (N : in out Node_Id) with Inline;
383 ---------------------------
384 -- Testing Warning Flags --
385 ---------------------------
387 -- These routines are to be used rather than testing flags Warnings_Off,
388 -- Has_Pragma_Unmodified, Has_Pragma_Unreferenced. They deal with setting
389 -- the flags Warnings_Off_Used[_Unmodified|Unreferenced] for later access.
391 function Has_Warnings_Off (E : Entity_Id) return Boolean;
392 -- If Warnings_Off is set on E, then returns True and also sets the flag
393 -- Warnings_Off_Used on E. If Warnings_Off is not set on E, returns False
394 -- and has no side effect.
396 function Has_Unmodified (E : Entity_Id) return Boolean;
397 -- If flag Has_Pragma_Unmodified is set on E, returns True with no side
398 -- effects. Otherwise if Warnings_Off is set on E, returns True and also
399 -- sets the flag Warnings_Off_Used_Unmodified on E. If neither of the flags
400 -- Warnings_Off nor Has_Pragma_Unmodified is set, returns False with no
401 -- side effects.
403 function Has_Unreferenced (E : Entity_Id) return Boolean;
404 -- If flag Has_Pragma_Unreferenced is set on E, returns True with no side
405 -- effects. Otherwise if Warnings_Off is set on E, returns True and also
406 -- sets the flag Warnings_Off_Used_Unreferenced on E. If neither of the
407 -- flags Warnings_Off nor Has_Pragma_Unreferenced is set, returns False
408 -- with no side effects.
410 ----------------------------------------------
411 -- Subprograms for Accessing Rep Item Chain --
412 ----------------------------------------------
414 -- The First_Rep_Item field of every entity points to a linked list (linked
415 -- through Next_Rep_Item) of representation pragmas, attribute definition
416 -- clauses, representation clauses, and aspect specifications that apply to
417 -- the item. Note that in the case of types, it is assumed that any such
418 -- rep items for a base type also apply to all subtypes. This is achieved
419 -- by having the chain for subtypes link onto the chain for the base type,
420 -- so that new entries for the subtype are added at the start of the chain.
422 -- Note: aspect specification nodes are linked only when evaluation of the
423 -- expression is deferred to the freeze point. For further details see
424 -- Sem_Ch13.Analyze_Aspect_Specifications.
426 function Get_Attribute_Definition_Clause
427 (E : Entity_Id;
428 Id : Attribute_Id) return Node_Id;
429 -- Searches the Rep_Item chain for a given entity E, for an instance of an
430 -- attribute definition clause with the given attribute Id. If found, the
431 -- value returned is the N_Attribute_Definition_Clause node, otherwise
432 -- Empty is returned.
434 -- WARNING: There is a matching C declaration of this subprogram in fe.h
436 function Get_Pragma (E : Entity_Id; Id : Pragma_Id) return Node_Id;
437 -- Searches the Rep_Item chain of entity E, for an instance of a pragma
438 -- with the given pragma Id. If found, the value returned is the N_Pragma
439 -- node, otherwise Empty is returned. The following contract pragmas that
440 -- appear in N_Contract nodes are also handled by this routine:
441 -- Abstract_State
442 -- Always_Terminates
443 -- Async_Readers
444 -- Async_Writers
445 -- Attach_Handler
446 -- Constant_After_Elaboration
447 -- Contract_Cases
448 -- Depends
449 -- Effective_Reads
450 -- Effective_Writes
451 -- Exceptional_Cases
452 -- Global
453 -- Initial_Condition
454 -- Initializes
455 -- Interrupt_Handler
456 -- No_Caching
457 -- Part_Of
458 -- Precondition
459 -- Postcondition
460 -- Refined_Depends
461 -- Refined_Global
462 -- Refined_Post
463 -- Refined_State
464 -- Side_Effects
465 -- Subprogram_Variant
466 -- Test_Case
467 -- Volatile_Function
469 function Get_Class_Wide_Pragma
470 (E : Entity_Id;
471 Id : Pragma_Id) return Node_Id;
472 -- Examine Rep_Item chain to locate a classwide pre- or postcondition of a
473 -- primitive operation. Returns Empty if not present.
475 function Get_Record_Representation_Clause (E : Entity_Id) return Node_Id;
476 -- Searches the Rep_Item chain for a given entity E, for a record
477 -- representation clause, and if found, returns it. Returns Empty
478 -- if no such clause is found.
480 function Present_In_Rep_Item (E : Entity_Id; N : Node_Id) return Boolean;
481 -- Return True if N is present in the Rep_Item chain for a given entity E
483 procedure Record_Rep_Item (E : Entity_Id; N : Node_Id);
484 -- N is the node for a representation pragma, representation clause, an
485 -- attribute definition clause, or an aspect specification that applies to
486 -- entity E. This procedure links the node N onto the Rep_Item chain for
487 -- entity E. Note that it is an error to call this procedure with E being
488 -- overloadable, and N being a pragma that applies to multiple overloadable
489 -- entities (Convention, Interface, Inline, Inline_Always, Import, Export,
490 -- External). This is not allowed even in the case where the entity is not
491 -- overloaded, since we can't rely on it being present in the overloaded
492 -- case, it is not useful to have it present in the non-overloaded case.
494 -------------------------------
495 -- Miscellaneous Subprograms --
496 -------------------------------
498 procedure Append_Entity (Id : Entity_Id; Scop : Entity_Id);
499 -- Add an entity to the list of entities declared in the scope Scop
501 function Get_Full_View (T : Entity_Id) return Entity_Id;
502 -- If T is an incomplete type and the full declaration has been seen, or
503 -- is the name of a class_wide type whose root is incomplete, return the
504 -- corresponding full declaration, else return T itself.
506 function Is_Entity_Name (N : Node_Id) return Boolean with Inline;
507 -- Test if the node N is the name of an entity (i.e. is an identifier,
508 -- expanded name, or an attribute reference that returns an entity).
510 -- WARNING: There is a matching C declaration of this subprogram in fe.h
512 procedure Link_Entities (First, Second : Entity_Id);
513 -- Link entities First and Second in one entity chain.
515 -- NOTE: No updates are done to the First_Entity and Last_Entity fields
516 -- of the scope.
518 procedure Remove_Entity (Id : Entity_Id);
519 -- Remove entity Id from the entity chain of its scope
521 function Subtype_Kind (K : Entity_Kind) return Entity_Kind;
522 -- Given an entity_kind K this function returns the entity_kind
523 -- corresponding to subtype kind of the type represented by K. For
524 -- example if K is E_Signed_Integer_Type then E_Signed_Integer_Subtype
525 -- is returned. If K is already a subtype kind it itself is returned. An
526 -- internal error is generated if no such correspondence exists for K.
528 procedure Unlink_Next_Entity (Id : Entity_Id);
529 -- Unchain entity Id's forward link within the entity chain of its scope
531 function Is_Volatile (Id : E) return B;
532 procedure Set_Is_Volatile (Id : E; V : B := True);
533 -- Call [Set_]Is_Volatile_Type/Is_Volatile_Object as appropriate for the
534 -- Ekind of Id.
536 function Convention
537 (N : Entity_Id) return Convention_Id renames Basic_Convention;
538 procedure Set_Convention (E : Entity_Id; Val : Convention_Id);
539 -- Same as Set_Basic_Convention, but with an extra check for access types.
540 -- In particular, if E is an access-to-subprogram type, and Val is a
541 -- foreign convention, then we set Can_Use_Internal_Rep to False on E.
542 -- Also, if the Etype of E is set and is an anonymous access type with
543 -- no convention set, this anonymous type inherits the convention of E.
545 ----------------------------------
546 -- Debugging Output Subprograms --
547 ----------------------------------
549 procedure Write_Entity_Info (Id : Entity_Id; Prefix : String);
550 -- A debugging procedure to write out information about an entity
552 end Einfo.Utils;