1 /* Perform the semantic phase of parsing, i.e., the process of
2 building tree structure, checking semantic consistency, and
3 building RTL. These routines are used both during actual parsing
4 and during the instantiation of template functions.
6 Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
7 Written by Mark Mitchell (mmitchell@usa.net) based on code found
8 formerly in parse.y and pt.c.
10 This file is part of GNU CC.
12 GNU CC is free software; you can redistribute it and/or modify it
13 under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2, or (at your option)
17 GNU CC is distributed in the hope that it will be useful, but
18 WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with GNU CC; see the file COPYING. If not, write to the Free
24 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
40 /* There routines provide a modular interface to perform many parsing
41 operations. They may therefore be used during actual parsing, or
42 during template instantiation, which may be regarded as a
43 degenerate form of parsing. Since the current g++ parser is
44 lacking in several respects, and will be reimplemented, we are
45 attempting to move most code that is not directly related to
46 parsing into this file; that will make implementing the new parser
47 much easier since it will be able to make use of these routines. */
49 static tree maybe_convert_cond
PARAMS ((tree
));
50 static tree simplify_aggr_init_exprs_r
PARAMS ((tree
*, int *, void *));
51 static void deferred_type_access_control
PARAMS ((void));
52 static void emit_associated_thunks
PARAMS ((tree
));
53 static void genrtl_try_block
PARAMS ((tree
));
54 static void genrtl_eh_spec_block
PARAMS ((tree
));
55 static void genrtl_handler
PARAMS ((tree
));
56 static void genrtl_catch_block
PARAMS ((tree
));
57 static void genrtl_ctor_stmt
PARAMS ((tree
));
58 static void genrtl_subobject
PARAMS ((tree
));
59 static void genrtl_named_return_value
PARAMS ((void));
60 static void cp_expand_stmt
PARAMS ((tree
));
61 static void genrtl_start_function
PARAMS ((tree
));
62 static void genrtl_finish_function
PARAMS ((tree
));
63 static tree clear_decl_rtl
PARAMS ((tree
*, int *, void *));
65 /* Finish processing the COND, the SUBSTMT condition for STMT. */
67 #define FINISH_COND(cond, stmt, substmt) \
69 if (last_tree != stmt) \
71 RECHAIN_STMTS (stmt, substmt); \
72 if (!processing_template_decl) \
74 cond = build_tree_list (substmt, cond); \
82 /* Returns non-zero if the current statement is a full expression,
83 i.e. temporaries created during that statement should be destroyed
84 at the end of the statement. */
87 stmts_are_full_exprs_p ()
89 return current_stmt_tree ()->stmts_are_full_exprs_p
;
92 /* Returns the stmt_tree (if any) to which statements are currently
93 being added. If there is no active statement-tree, NULL is
100 ? &cfun
->language
->x_stmt_tree
101 : &scope_chain
->x_stmt_tree
);
104 /* Nonzero if TYPE is an anonymous union or struct type. We have to use a
105 flag for this because "A union for which objects or pointers are
106 declared is not an anonymous union" [class.union]. */
109 anon_aggr_type_p (node
)
112 return (CLASS_TYPE_P (node
) && TYPE_LANG_SPECIFIC(node
)->anon_aggr
);
115 /* Finish a scope. */
120 tree block
= NULL_TREE
;
122 if (stmts_are_full_exprs_p ())
124 tree scope_stmts
= NULL_TREE
;
126 if (!processing_template_decl
)
127 scope_stmts
= add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
129 block
= poplevel (kept_level_p (), 1, 0);
130 if (block
&& !processing_template_decl
)
132 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmts
)) = block
;
133 SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmts
)) = block
;
140 /* Begin a new scope. */
145 if (stmts_are_full_exprs_p ())
148 if (!processing_template_decl
)
149 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
153 /* Finish a goto-statement. */
156 finish_goto_stmt (destination
)
159 if (TREE_CODE (destination
) == IDENTIFIER_NODE
)
160 destination
= lookup_label (destination
);
162 /* We warn about unused labels with -Wunused. That means we have to
163 mark the used labels as used. */
164 if (TREE_CODE (destination
) == LABEL_DECL
)
165 TREE_USED (destination
) = 1;
167 if (TREE_CODE (destination
) != LABEL_DECL
)
168 /* We don't inline calls to functions with computed gotos.
169 Those functions are typically up to some funny business,
170 and may be depending on the labels being at particular
171 addresses, or some such. */
172 DECL_UNINLINABLE (current_function_decl
) = 1;
174 check_goto (destination
);
176 return add_stmt (build_stmt (GOTO_STMT
, destination
));
179 /* COND is the condition-expression for an if, while, etc.,
180 statement. Convert it to a boolean value, if appropriate. */
183 maybe_convert_cond (cond
)
186 /* Empty conditions remain empty. */
190 /* Wait until we instantiate templates before doing conversion. */
191 if (processing_template_decl
)
194 /* Do the conversion. */
195 cond
= convert_from_reference (cond
);
196 return condition_conversion (cond
);
199 /* Finish an expression-statement, whose EXPRESSION is as indicated. */
202 finish_expr_stmt (expr
)
207 if (expr
!= NULL_TREE
)
209 if (!processing_template_decl
210 && !(stmts_are_full_exprs_p ())
211 && ((TREE_CODE (TREE_TYPE (expr
)) == ARRAY_TYPE
213 || TREE_CODE (TREE_TYPE (expr
)) == FUNCTION_TYPE
))
214 expr
= default_conversion (expr
);
216 if (stmts_are_full_exprs_p ())
217 expr
= convert_to_void (expr
, "statement");
219 r
= add_stmt (build_stmt (EXPR_STMT
, expr
));
224 /* This was an expression-statement, so we save the type of the
226 last_expr_type
= expr
? TREE_TYPE (expr
) : NULL_TREE
;
232 /* Begin an if-statement. Returns a newly created IF_STMT if
240 r
= build_stmt (IF_STMT
, NULL_TREE
, NULL_TREE
, NULL_TREE
);
245 /* Process the COND of an if-statement, which may be given by
249 finish_if_stmt_cond (cond
, if_stmt
)
253 cond
= maybe_convert_cond (cond
);
254 FINISH_COND (cond
, if_stmt
, IF_COND (if_stmt
));
257 /* Finish the then-clause of an if-statement, which may be given by
261 finish_then_clause (if_stmt
)
264 RECHAIN_STMTS (if_stmt
, THEN_CLAUSE (if_stmt
));
269 /* Begin the else-clause of an if-statement. */
276 /* Finish the else-clause of an if-statement, which may be given by
280 finish_else_clause (if_stmt
)
283 RECHAIN_STMTS (if_stmt
, ELSE_CLAUSE (if_stmt
));
286 /* Finsh an if-statement. */
298 /* If COND wasn't a declaration, clear out the
299 block we made for it and start a new one here so the
300 optimization in expand_end_loop will work. */
301 if (getdecls () == NULL_TREE
)
308 /* Begin a while-statement. Returns a newly created WHILE_STMT if
315 r
= build_stmt (WHILE_STMT
, NULL_TREE
, NULL_TREE
);
321 /* Process the COND of a while-statement, which may be given by
325 finish_while_stmt_cond (cond
, while_stmt
)
329 cond
= maybe_convert_cond (cond
);
330 FINISH_COND (cond
, while_stmt
, WHILE_COND (while_stmt
));
334 /* Finish a while-statement, which may be given by WHILE_STMT. */
337 finish_while_stmt (while_stmt
)
341 RECHAIN_STMTS (while_stmt
, WHILE_BODY (while_stmt
));
345 /* Begin a do-statement. Returns a newly created DO_STMT if
351 tree r
= build_stmt (DO_STMT
, NULL_TREE
, NULL_TREE
);
356 /* Finish the body of a do-statement, which may be given by DO_STMT. */
359 finish_do_body (do_stmt
)
362 RECHAIN_STMTS (do_stmt
, DO_BODY (do_stmt
));
365 /* Finish a do-statement, which may be given by DO_STMT, and whose
366 COND is as indicated. */
369 finish_do_stmt (cond
, do_stmt
)
373 cond
= maybe_convert_cond (cond
);
374 DO_COND (do_stmt
) = cond
;
378 /* Finish a return-statement. The EXPRESSION returned, if any, is as
382 finish_return_stmt (expr
)
387 if (!processing_template_decl
)
388 expr
= check_return_expr (expr
);
389 if (!processing_template_decl
)
391 if (DECL_CONSTRUCTOR_P (current_function_decl
) && ctor_label
)
393 /* Even returns without a value in a constructor must return
394 `this'. We accomplish this by sending all returns in a
395 constructor to the CTOR_LABEL; finish_function emits code to
396 return a value there. When we finally generate the real
397 return statement, CTOR_LABEL is no longer set, and we fall
398 through into the normal return-processing code below. */
399 return finish_goto_stmt (ctor_label
);
401 else if (DECL_DESTRUCTOR_P (current_function_decl
))
403 /* Similarly, all destructors must run destructors for
404 base-classes before returning. So, all returns in a
405 destructor get sent to the DTOR_LABEL; finsh_function emits
406 code to return a value there. */
407 return finish_goto_stmt (dtor_label
);
410 r
= add_stmt (build_stmt (RETURN_STMT
, expr
));
416 /* Begin a for-statement. Returns a new FOR_STMT if appropriate. */
423 r
= build_stmt (FOR_STMT
, NULL_TREE
, NULL_TREE
,
424 NULL_TREE
, NULL_TREE
);
425 NEW_FOR_SCOPE_P (r
) = flag_new_for_scope
> 0;
427 if (NEW_FOR_SCOPE_P (r
))
430 note_level_for_for ();
436 /* Finish the for-init-statement of a for-statement, which may be
437 given by FOR_STMT. */
440 finish_for_init_stmt (for_stmt
)
443 if (last_tree
!= for_stmt
)
444 RECHAIN_STMTS (for_stmt
, FOR_INIT_STMT (for_stmt
));
448 /* Finish the COND of a for-statement, which may be given by
452 finish_for_cond (cond
, for_stmt
)
456 cond
= maybe_convert_cond (cond
);
457 FINISH_COND (cond
, for_stmt
, FOR_COND (for_stmt
));
461 /* Finish the increment-EXPRESSION in a for-statement, which may be
462 given by FOR_STMT. */
465 finish_for_expr (expr
, for_stmt
)
469 FOR_EXPR (for_stmt
) = expr
;
472 /* Finish the body of a for-statement, which may be given by
473 FOR_STMT. The increment-EXPR for the loop must be
477 finish_for_stmt (for_stmt
)
480 /* Pop the scope for the body of the loop. */
482 RECHAIN_STMTS (for_stmt
, FOR_BODY (for_stmt
));
483 if (NEW_FOR_SCOPE_P (for_stmt
))
488 /* Finish a break-statement. */
493 return add_stmt (build_break_stmt ());
496 /* Finish a continue-statement. */
499 finish_continue_stmt ()
501 return add_stmt (build_continue_stmt ());
504 /* Begin a switch-statement. Returns a new SWITCH_STMT if
511 r
= build_stmt (SWITCH_STMT
, NULL_TREE
, NULL_TREE
);
517 /* Finish the cond of a switch-statement. */
520 finish_switch_cond (cond
, switch_stmt
)
524 if (!processing_template_decl
)
529 /* Convert the condition to an integer or enumeration type. */
530 cond
= build_expr_type_conversion (WANT_INT
| WANT_ENUM
, cond
, 1);
531 if (cond
== NULL_TREE
)
533 error ("switch quantity not an integer");
534 cond
= error_mark_node
;
536 if (cond
!= error_mark_node
)
538 cond
= default_conversion (cond
);
539 cond
= fold (build1 (CLEANUP_POINT_EXPR
, TREE_TYPE (cond
), cond
));
542 type
= TREE_TYPE (cond
);
543 index
= get_unwidened (cond
, NULL_TREE
);
544 /* We can't strip a conversion from a signed type to an unsigned,
545 because if we did, int_fits_type_p would do the wrong thing
546 when checking case values for being in range,
547 and it's too hard to do the right thing. */
548 if (TREE_UNSIGNED (TREE_TYPE (cond
))
549 == TREE_UNSIGNED (TREE_TYPE (index
)))
552 FINISH_COND (cond
, switch_stmt
, SWITCH_COND (switch_stmt
));
553 push_switch (switch_stmt
);
556 /* Finish the body of a switch-statement, which may be given by
557 SWITCH_STMT. The COND to switch on is indicated. */
560 finish_switch_stmt (switch_stmt
)
563 RECHAIN_STMTS (switch_stmt
, SWITCH_BODY (switch_stmt
));
569 /* Generate the RTL for T, which is a TRY_BLOCK. */
577 expand_eh_region_start ();
578 expand_stmt (TRY_STMTS (t
));
579 expand_eh_region_end_cleanup (TRY_HANDLERS (t
));
583 if (!FN_TRY_BLOCK_P (t
))
584 emit_line_note (input_filename
, lineno
);
586 expand_eh_region_start ();
587 expand_stmt (TRY_STMTS (t
));
589 if (FN_TRY_BLOCK_P (t
))
591 end_protect_partials ();
592 expand_start_all_catch ();
593 in_function_try_handler
= 1;
594 expand_stmt (TRY_HANDLERS (t
));
595 in_function_try_handler
= 0;
596 expand_end_all_catch ();
600 expand_start_all_catch ();
601 expand_stmt (TRY_HANDLERS (t
));
602 expand_end_all_catch ();
607 /* Generate the RTL for T, which is an EH_SPEC_BLOCK. */
610 genrtl_eh_spec_block (t
)
613 expand_eh_region_start ();
614 expand_stmt (EH_SPEC_STMTS (t
));
615 expand_eh_region_end_allowed (EH_SPEC_RAISES (t
),
616 build_call (call_unexpected_node
,
617 tree_cons (NULL_TREE
,
622 /* Begin a try-block. Returns a newly-created TRY_BLOCK if
628 tree r
= build_stmt (TRY_BLOCK
, NULL_TREE
, NULL_TREE
);
633 /* Likewise, for a function-try-block. */
636 begin_function_try_block ()
638 tree r
= build_stmt (TRY_BLOCK
, NULL_TREE
, NULL_TREE
);
639 FN_TRY_BLOCK_P (r
) = 1;
644 /* Finish a try-block, which may be given by TRY_BLOCK. */
647 finish_try_block (try_block
)
650 RECHAIN_STMTS (try_block
, TRY_STMTS (try_block
));
653 /* Finish the body of a cleanup try-block, which may be given by
657 finish_cleanup_try_block (try_block
)
660 RECHAIN_STMTS (try_block
, TRY_STMTS (try_block
));
663 /* Finish an implicitly generated try-block, with a cleanup is given
667 finish_cleanup (cleanup
, try_block
)
671 TRY_HANDLERS (try_block
) = cleanup
;
672 CLEANUP_P (try_block
) = 1;
675 /* Likewise, for a function-try-block. */
678 finish_function_try_block (try_block
)
681 if (TREE_CHAIN (try_block
)
682 && TREE_CODE (TREE_CHAIN (try_block
)) == CTOR_INITIALIZER
)
684 /* Chain the compound statement after the CTOR_INITIALIZER. */
685 TREE_CHAIN (TREE_CHAIN (try_block
)) = last_tree
;
686 /* And make the CTOR_INITIALIZER the body of the try-block. */
687 RECHAIN_STMTS (try_block
, TRY_STMTS (try_block
));
690 RECHAIN_STMTS (try_block
, TRY_STMTS (try_block
));
691 in_function_try_handler
= 1;
694 /* Finish a handler-sequence for a try-block, which may be given by
698 finish_handler_sequence (try_block
)
701 RECHAIN_STMTS (try_block
, TRY_HANDLERS (try_block
));
702 check_handlers (TRY_HANDLERS (try_block
));
705 /* Likewise, for a function-try-block. */
708 finish_function_handler_sequence (try_block
)
711 in_function_try_handler
= 0;
712 RECHAIN_STMTS (try_block
, TRY_HANDLERS (try_block
));
713 check_handlers (TRY_HANDLERS (try_block
));
716 /* Generate the RTL for T, which is a HANDLER. */
722 genrtl_do_pushlevel ();
723 expand_stmt (HANDLER_BODY (t
));
724 if (!processing_template_decl
)
728 /* Begin a handler. Returns a HANDLER if appropriate. */
734 r
= build_stmt (HANDLER
, NULL_TREE
, NULL_TREE
);
740 /* Finish the handler-parameters for a handler, which may be given by
741 HANDLER. DECL is the declaration for the catch parameter, or NULL
742 if this is a `catch (...)' clause. */
745 finish_handler_parms (decl
, handler
)
749 tree blocks
= NULL_TREE
;
751 if (processing_template_decl
)
755 decl
= pushdecl (decl
);
756 decl
= push_template_decl (decl
);
757 add_decl_stmt (decl
);
758 RECHAIN_STMTS (handler
, HANDLER_PARMS (handler
));
762 blocks
= expand_start_catch_block (decl
);
765 TREE_TYPE (handler
) = TREE_TYPE (decl
);
770 /* Generate the RTL for a START_CATCH_STMT. */
773 genrtl_catch_block (type
)
776 expand_start_catch (type
);
779 /* Note the beginning of a handler for TYPE. This function is called
780 at the point to which control should be transferred when an
781 appropriately-typed exception is thrown. */
784 begin_catch_block (type
)
787 add_stmt (build (START_CATCH_STMT
, type
));
790 /* Finish a handler, which may be given by HANDLER. The BLOCKs are
791 the return value from the matching call to finish_handler_parms. */
794 finish_handler (blocks
, handler
)
798 if (!processing_template_decl
)
799 expand_end_catch_block (blocks
);
801 RECHAIN_STMTS (handler
, HANDLER_BODY (handler
));
804 /* Generate the RTL for T, which is a CTOR_STMT. */
810 if (CTOR_BEGIN_P (t
))
811 begin_protect_partials ();
813 /* After this point, any exceptions will cause the
814 destructor to be executed, so we no longer need to worry
815 about destroying the various subobjects ourselves. */
816 end_protect_partials ();
819 /* Begin a compound-statement. If HAS_NO_SCOPE is non-zero, the
820 compound-statement does not define a scope. Returns a new
821 COMPOUND_STMT if appropriate. */
824 begin_compound_stmt (has_no_scope
)
830 r
= build_stmt (COMPOUND_STMT
, NULL_TREE
);
832 if (last_tree
&& TREE_CODE (last_tree
) == TRY_BLOCK
)
837 COMPOUND_STMT_NO_SCOPE (r
) = 1;
839 last_expr_type
= NULL_TREE
;
845 note_level_for_try ();
848 /* Normally, we try hard to keep the BLOCK for a
849 statement-expression. But, if it's a statement-expression with
850 a scopeless block, there's nothing to keep, and we don't want
851 to accidentally keep a block *inside* the scopeless block. */
854 /* If this is the outermost block of the function, declare the
855 variables __FUNCTION__, __PRETTY_FUNCTION__, and so forth. */
857 && !function_name_declared_p
860 function_name_declared_p
= 1;
861 declare_function_name ();
867 /* Finish a compound-statement, which may be given by COMPOUND_STMT.
868 If HAS_NO_SCOPE is non-zero, the compound statement does not define
872 finish_compound_stmt (has_no_scope
, compound_stmt
)
884 RECHAIN_STMTS (compound_stmt
, COMPOUND_BODY (compound_stmt
));
886 /* When we call finish_stmt we will lose LAST_EXPR_TYPE. But, since
887 the precise purpose of that variable is store the type of the
888 last expression statement within the last compound statement, we
889 preserve the value. */
897 /* Finish an asm-statement, whose components are a CV_QUALIFIER, a
898 STRING, some OUTPUT_OPERANDS, some INPUT_OPERANDS, and some
902 finish_asm_stmt (cv_qualifier
, string
, output_operands
,
903 input_operands
, clobbers
)
906 tree output_operands
;
913 if (TREE_CHAIN (string
))
914 string
= combine_strings (string
);
916 if (cv_qualifier
!= NULL_TREE
917 && cv_qualifier
!= ridpointers
[(int) RID_VOLATILE
])
919 cp_warning ("%s qualifier ignored on asm",
920 IDENTIFIER_POINTER (cv_qualifier
));
921 cv_qualifier
= NULL_TREE
;
924 if (!processing_template_decl
)
925 for (t
= input_operands
; t
; t
= TREE_CHAIN (t
))
927 tree converted_operand
928 = decay_conversion (TREE_VALUE (t
));
930 /* If the type of the operand hasn't been determined (e.g.,
931 because it involves an overloaded function), then issue an
932 error message. There's no context available to resolve the
934 if (TREE_TYPE (converted_operand
) == unknown_type_node
)
936 cp_error ("type of asm operand `%E' could not be determined",
938 converted_operand
= error_mark_node
;
940 TREE_VALUE (t
) = converted_operand
;
943 r
= build_stmt (ASM_STMT
, cv_qualifier
, string
,
944 output_operands
, input_operands
,
949 /* Finish a label with the indicated NAME. */
952 finish_label_stmt (name
)
955 tree decl
= define_label (input_filename
, lineno
, name
);
956 add_stmt (build_stmt (LABEL_STMT
, decl
));
959 /* Finish a series of declarations for local labels. G++ allows users
960 to declare "local" labels, i.e., labels with scope. This extension
961 is useful when writing code involving statement-expressions. */
964 finish_label_decl (name
)
967 tree decl
= declare_local_label (name
);
968 add_decl_stmt (decl
);
971 /* Generate the RTL for a SUBOBJECT. */
974 genrtl_subobject (cleanup
)
977 add_partial_entry (cleanup
);
980 /* We're in a constructor, and have just constructed a a subobject of
981 *THIS. CLEANUP is code to run if an exception is thrown before the
982 end of the current function is reached. */
985 finish_subobject (cleanup
)
988 tree r
= build_stmt (SUBOBJECT
, cleanup
);
992 /* When DECL goes out of scope, make sure that CLEANUP is executed. */
995 finish_decl_cleanup (decl
, cleanup
)
999 add_stmt (build_stmt (CLEANUP_STMT
, decl
, cleanup
));
1002 /* Generate the RTL for a RETURN_INIT. */
1005 genrtl_named_return_value ()
1007 tree decl
= DECL_RESULT (current_function_decl
);
1009 /* If this named return value comes in a register, put it in a
1011 if (DECL_REGISTER (decl
))
1013 /* Note that the mode of the old DECL_RTL may be wider than the
1014 mode of DECL_RESULT, depending on the calling conventions for
1015 the processor. For example, on the Alpha, a 32-bit integer
1016 is returned in a DImode register -- the DECL_RESULT has
1017 SImode but the DECL_RTL for the DECL_RESULT has DImode. So,
1018 here, we use the mode the back-end has already assigned for
1019 the return value. */
1020 SET_DECL_RTL (decl
, gen_reg_rtx (GET_MODE (DECL_RTL (decl
))));
1021 if (TREE_ADDRESSABLE (decl
))
1022 put_var_into_stack (decl
);
1025 emit_local_var (decl
);
1028 /* Bind a name and initialization to the return value of
1029 the current function. */
1032 finish_named_return_value (return_id
, init
)
1033 tree return_id
, init
;
1035 tree decl
= DECL_RESULT (current_function_decl
);
1037 /* Give this error as many times as there are occurrences, so that
1038 users can use Emacs compilation buffers to find and fix all such
1041 pedwarn ("ISO C++ does not permit named return values");
1042 cp_deprecated ("the named return value extension");
1044 if (return_id
!= NULL_TREE
)
1046 if (DECL_NAME (decl
) == NULL_TREE
)
1047 DECL_NAME (decl
) = return_id
;
1050 cp_error ("return identifier `%D' already in place", return_id
);
1055 /* Can't let this happen for constructors. */
1056 if (DECL_CONSTRUCTOR_P (current_function_decl
))
1058 error ("can't redefine default return value for constructors");
1062 /* If we have a named return value, put that in our scope as well. */
1063 if (DECL_NAME (decl
) != NULL_TREE
)
1065 /* Let `cp_finish_decl' know that this initializer is ok. */
1066 DECL_INITIAL (decl
) = init
;
1067 if (doing_semantic_analysis_p ())
1069 if (!processing_template_decl
)
1071 cp_finish_decl (decl
, init
, NULL_TREE
, 0);
1072 add_stmt (build_stmt (RETURN_INIT
, NULL_TREE
, NULL_TREE
));
1075 add_stmt (build_stmt (RETURN_INIT
, return_id
, init
));
1078 /* Don't use tree-inlining for functions with named return values.
1079 That doesn't work properly because we don't do any translation of
1080 the RETURN_INITs when they are copied. */
1081 DECL_UNINLINABLE (current_function_decl
) = 1;
1084 /* The INIT_LIST is a list of mem-initializers, in the order they were
1085 written by the user. The TREE_VALUE of each node is a list of
1086 initializers for a particular subobject. The TREE_PURPOSE is a
1087 FIELD_DECL is the initializer is for a non-static data member, and
1088 a class type if the initializer is for a base class. */
1091 finish_mem_initializers (init_list
)
1094 tree member_init_list
;
1095 tree base_init_list
;
1096 tree last_base_warned_about
;
1100 member_init_list
= NULL_TREE
;
1101 base_init_list
= NULL_TREE
;
1102 last_base_warned_about
= NULL_TREE
;
1104 for (init
= init_list
; init
; init
= next
)
1106 next
= TREE_CHAIN (init
);
1107 if (TREE_CODE (TREE_PURPOSE (init
)) == FIELD_DECL
)
1109 TREE_CHAIN (init
) = member_init_list
;
1110 member_init_list
= init
;
1112 /* We're running through the initializers from right to left
1113 as we process them here. So, if we see a data member
1114 initializer after we see a base initializer, that
1115 actually means that the base initializer preceeded the
1116 data member initializer. */
1117 if (warn_reorder
&& last_base_warned_about
!= base_init_list
)
1121 for (base
= base_init_list
;
1122 base
!= last_base_warned_about
;
1123 base
= TREE_CHAIN (base
))
1125 cp_warning ("base initializer for `%T'",
1126 TREE_PURPOSE (base
));
1127 warning (" will be re-ordered to precede member initializations");
1130 last_base_warned_about
= base_init_list
;
1135 TREE_CHAIN (init
) = base_init_list
;
1136 base_init_list
= init
;
1140 setup_vtbl_ptr (member_init_list
, base_init_list
);
1143 /* Cache the value of this class's main virtual function table pointer
1144 in a register variable. This will save one indirection if a
1145 more than one virtual function call is made this function. */
1148 setup_vtbl_ptr (member_init_list
, base_init_list
)
1149 tree member_init_list
;
1150 tree base_init_list
;
1152 my_friendly_assert (doing_semantic_analysis_p (), 19990919);
1154 /* If we've already done this, there's no need to do it again. */
1158 if (DECL_CONSTRUCTOR_P (current_function_decl
))
1160 if (processing_template_decl
)
1161 add_stmt (build_min_nt
1163 member_init_list
, base_init_list
));
1168 /* Mark the beginning of the constructor. */
1169 ctor_stmt
= build_stmt (CTOR_STMT
);
1170 CTOR_BEGIN_P (ctor_stmt
) = 1;
1171 add_stmt (ctor_stmt
);
1173 /* And actually initialize the base-classes and members. */
1174 emit_base_init (member_init_list
, base_init_list
);
1177 else if (DECL_DESTRUCTOR_P (current_function_decl
)
1178 && !processing_template_decl
)
1184 /* If the dtor is empty, and we know there is not any possible
1185 way we could use any vtable entries, before they are possibly
1186 set by a base class dtor, we don't have to setup the vtables,
1187 as we know that any base class dtor will set up any vtables
1188 it needs. We avoid MI, because one base class dtor can do a
1189 virtual dispatch to an overridden function that would need to
1190 have a non-related vtable set up, we cannot avoid setting up
1191 vtables in that case. We could change this to see if there
1192 is just one vtable. */
1193 if_stmt
= begin_if_stmt ();
1195 /* If it is not safe to avoid setting up the vtables, then
1196 someone will change the condition to be boolean_true_node.
1197 (Actually, for now, we do not have code to set the condition
1198 appropriately, so we just assume that we always need to
1199 initialize the vtables.) */
1200 finish_if_stmt_cond (boolean_true_node
, if_stmt
);
1201 current_vcalls_possible_p
= &IF_COND (if_stmt
);
1203 /* Don't declare __PRETTY_FUNCTION__ and friends here when we
1204 open the block for the if-body. */
1205 saved_cfnd
= function_name_declared_p
;
1206 function_name_declared_p
= 1;
1207 compound_stmt
= begin_compound_stmt (/*has_no_scope=*/0);
1208 function_name_declared_p
= saved_cfnd
;
1210 /* Make all virtual function table pointers in non-virtual base
1211 classes point to CURRENT_CLASS_TYPE's virtual function
1213 initialize_vtbl_ptrs (current_class_ptr
);
1215 finish_compound_stmt (/*has_no_scope=*/0, compound_stmt
);
1216 finish_then_clause (if_stmt
);
1220 /* Always keep the BLOCK node associated with the outermost pair of
1221 curly braces of a function. These are needed for correct
1222 operation of dwarfout.c. */
1223 keep_next_level (1);
1225 /* The virtual function tables are set up now. */
1229 /* Returns the stack of SCOPE_STMTs for the current function. */
1232 current_scope_stmt_stack ()
1234 return &cfun
->language
->x_scope_stmt_stack
;
1237 /* Finish a parenthesized expression EXPR. */
1240 finish_parenthesized_expr (expr
)
1243 if (IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (TREE_CODE (expr
))))
1244 /* This inhibits warnings in truthvalue_conversion. */
1245 C_SET_EXP_ORIGINAL_CODE (expr
, ERROR_MARK
);
1247 if (TREE_CODE (expr
) == OFFSET_REF
)
1248 /* [expr.unary.op]/3 The qualified id of a pointer-to-member must not be
1249 enclosed in parentheses. */
1250 PTRMEM_OK_P (expr
) = 0;
1254 /* Begin a statement-expression. The value returned must be passed to
1255 finish_stmt_expr. */
1260 /* If we're outside a function, we won't have a statement-tree to
1261 work with. But, if we see a statement-expression we need to
1263 if (! cfun
&& !last_tree
)
1264 begin_stmt_tree (&scope_chain
->x_saved_tree
);
1266 keep_next_level (1);
1267 /* If we're building a statement tree, then the upcoming compound
1268 statement will be chained onto the tree structure, starting at
1269 last_tree. We return last_tree so that we can later unhook the
1270 compound statement. */
1274 /* Used when beginning a statement-expression outside function scope.
1275 For example, when handling a file-scope initializer, we use this
1279 begin_global_stmt_expr ()
1281 if (! cfun
&& !last_tree
)
1282 begin_stmt_tree (&scope_chain
->x_saved_tree
);
1284 keep_next_level (1);
1286 return (last_tree
!= NULL_TREE
) ? last_tree
: expand_start_stmt_expr();
1289 /* Finish the STMT_EXPR last begun with begin_global_stmt_expr. */
1292 finish_global_stmt_expr (stmt_expr
)
1295 stmt_expr
= expand_end_stmt_expr (stmt_expr
);
1298 && TREE_CHAIN (scope_chain
->x_saved_tree
) == NULL_TREE
)
1299 finish_stmt_tree (&scope_chain
->x_saved_tree
);
1304 /* Finish a statement-expression. RTL_EXPR should be the value
1305 returned by the previous begin_stmt_expr; EXPR is the
1306 statement-expression. Returns an expression representing the
1307 statement-expression. */
1310 finish_stmt_expr (rtl_expr
)
1315 /* If the last thing in the statement-expression was not an
1316 expression-statement, then it has type `void'. */
1317 if (!last_expr_type
)
1318 last_expr_type
= void_type_node
;
1319 result
= build_min (STMT_EXPR
, last_expr_type
, last_tree
);
1320 TREE_SIDE_EFFECTS (result
) = 1;
1322 /* Remove the compound statement from the tree structure; it is
1323 now saved in the STMT_EXPR. */
1324 last_tree
= rtl_expr
;
1325 TREE_CHAIN (last_tree
) = NULL_TREE
;
1327 /* If we created a statement-tree for this statement-expression,
1330 && TREE_CHAIN (scope_chain
->x_saved_tree
) == NULL_TREE
)
1331 finish_stmt_tree (&scope_chain
->x_saved_tree
);
1336 /* Finish a call to FN with ARGS. Returns a representation of the
1340 finish_call_expr (fn
, args
, koenig
)
1349 if (TREE_CODE (fn
) == BIT_NOT_EXPR
)
1350 fn
= build_x_unary_op (BIT_NOT_EXPR
, TREE_OPERAND (fn
, 0));
1351 else if (TREE_CODE (fn
) != TEMPLATE_ID_EXPR
)
1352 fn
= do_identifier (fn
, 2, args
);
1354 result
= build_x_function_call (fn
, args
, current_class_ref
);
1356 if (TREE_CODE (result
) == CALL_EXPR
1357 && (! TREE_TYPE (result
)
1358 || TREE_CODE (TREE_TYPE (result
)) != VOID_TYPE
))
1359 result
= require_complete_type (result
);
1364 /* Finish a call to a postfix increment or decrement or EXPR. (Which
1365 is indicated by CODE, which should be POSTINCREMENT_EXPR or
1366 POSTDECREMENT_EXPR.) */
1369 finish_increment_expr (expr
, code
)
1371 enum tree_code code
;
1373 /* If we get an OFFSET_REF, turn it into what it really means (e.g.,
1374 a COMPONENT_REF). This way if we've got, say, a reference to a
1375 static member that's being operated on, we don't end up trying to
1376 find a member operator for the class it's in. */
1378 if (TREE_CODE (expr
) == OFFSET_REF
)
1379 expr
= resolve_offset_ref (expr
);
1380 return build_x_unary_op (code
, expr
);
1383 /* Finish a use of `this'. Returns an expression for `this'. */
1390 if (current_class_ptr
)
1392 #ifdef WARNING_ABOUT_CCD
1393 TREE_USED (current_class_ptr
) = 1;
1395 result
= current_class_ptr
;
1397 else if (current_function_decl
1398 && DECL_STATIC_FUNCTION_P (current_function_decl
))
1400 error ("`this' is unavailable for static member functions");
1401 result
= error_mark_node
;
1405 if (current_function_decl
)
1406 error ("invalid use of `this' in non-member function");
1408 error ("invalid use of `this' at top level");
1409 result
= error_mark_node
;
1415 /* Finish a member function call using OBJECT and ARGS as arguments to
1416 FN. Returns an expression for the call. */
1419 finish_object_call_expr (fn
, object
, args
)
1425 /* This is a future direction of this code, but because
1426 build_x_function_call cannot always undo what is done in
1427 build_component_ref entirely yet, we cannot do this. */
1429 tree real_fn
= build_component_ref (object
, fn
, NULL_TREE
, 1);
1430 return finish_call_expr (real_fn
, args
);
1432 if (DECL_DECLARES_TYPE_P (fn
))
1434 if (processing_template_decl
)
1435 /* This can happen on code like:
1438 template <class T> void f(T t) {
1442 We just grab the underlying IDENTIFIER. */
1443 fn
= DECL_NAME (fn
);
1446 cp_error ("calling type `%T' like a method", fn
);
1447 return error_mark_node
;
1451 return build_method_call (object
, fn
, args
, NULL_TREE
, LOOKUP_NORMAL
);
1455 /* Finish a qualified member function call using OBJECT and ARGS as
1456 arguments to FN. Returns an expression for the call. */
1459 finish_qualified_object_call_expr (fn
, object
, args
)
1464 return build_scoped_method_call (object
, TREE_OPERAND (fn
, 0),
1465 TREE_OPERAND (fn
, 1), args
);
1468 /* Finish a pseudo-destructor call expression of OBJECT, with SCOPE
1469 being the scope, if any, of DESTRUCTOR. Returns an expression for
1473 finish_pseudo_destructor_call_expr (object
, scope
, destructor
)
1478 if (processing_template_decl
)
1479 return build_min_nt (PSEUDO_DTOR_EXPR
, object
, scope
, destructor
);
1481 if (scope
&& scope
!= destructor
)
1482 cp_error ("destructor specifier `%T::~%T()' must have matching names",
1485 if ((scope
== NULL_TREE
|| IDENTIFIER_GLOBAL_VALUE (destructor
))
1486 && (TREE_CODE (TREE_TYPE (object
)) !=
1487 TREE_CODE (TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (destructor
)))))
1488 cp_error ("`%E' is not of type `%T'", object
, destructor
);
1490 return cp_convert (void_type_node
, object
);
1493 /* Finish a call to a globally qualified member function FN using
1494 ARGS. Returns an expression for the call. */
1497 finish_qualified_call_expr (fn
, args
)
1501 if (processing_template_decl
)
1502 return build_min_nt (CALL_EXPR
, fn
, args
, NULL_TREE
);
1504 return build_member_call (TREE_OPERAND (fn
, 0),
1505 TREE_OPERAND (fn
, 1),
1509 /* Finish an expression taking the address of LABEL. Returns an
1510 expression for the address. */
1513 finish_label_address_expr (label
)
1518 label
= lookup_label (label
);
1519 if (label
== NULL_TREE
)
1520 result
= null_pointer_node
;
1523 TREE_USED (label
) = 1;
1524 result
= build1 (ADDR_EXPR
, ptr_type_node
, label
);
1525 TREE_CONSTANT (result
) = 1;
1526 /* This function cannot be inlined. All jumps to the addressed
1527 label should wind up at the same point. */
1528 DECL_UNINLINABLE (current_function_decl
) = 1;
1534 /* Finish an expression of the form CODE EXPR. */
1537 finish_unary_op_expr (code
, expr
)
1538 enum tree_code code
;
1541 tree result
= build_x_unary_op (code
, expr
);
1542 /* Inside a template, build_x_unary_op does not fold the
1543 expression. So check whether the result is folded before
1544 setting TREE_NEGATED_INT. */
1545 if (code
== NEGATE_EXPR
&& TREE_CODE (expr
) == INTEGER_CST
1546 && TREE_CODE (result
) == INTEGER_CST
1547 && !TREE_UNSIGNED (TREE_TYPE (result
))
1548 && INT_CST_LT (result
, integer_zero_node
))
1549 TREE_NEGATED_INT (result
) = 1;
1550 overflow_warning (result
);
1554 /* Finish an id-expression. */
1557 finish_id_expr (expr
)
1560 if (TREE_CODE (expr
) == IDENTIFIER_NODE
)
1561 expr
= do_identifier (expr
, 1, NULL_TREE
);
1563 if (TREE_TYPE (expr
) == error_mark_node
)
1564 expr
= error_mark_node
;
1568 static tree current_type_lookups
;
1570 /* Perform deferred access control for types used in the type of a
1574 deferred_type_access_control ()
1576 tree lookup
= type_lookups
;
1578 if (lookup
== error_mark_node
)
1581 for (; lookup
; lookup
= TREE_CHAIN (lookup
))
1582 enforce_access (TREE_PURPOSE (lookup
), TREE_VALUE (lookup
));
1586 decl_type_access_control (decl
)
1591 if (type_lookups
== error_mark_node
)
1594 save_fn
= current_function_decl
;
1596 if (decl
&& TREE_CODE (decl
) == FUNCTION_DECL
)
1597 current_function_decl
= decl
;
1599 deferred_type_access_control ();
1601 current_function_decl
= save_fn
;
1603 /* Now strip away the checks for the current declarator; they were
1604 added to type_lookups after typed_declspecs saved the copy that
1605 ended up in current_type_lookups. */
1606 type_lookups
= current_type_lookups
;
1608 current_type_lookups
= NULL_TREE
;
1611 /* Record the lookups, if we're doing deferred access control. */
1614 save_type_access_control (lookups
)
1617 if (type_lookups
!= error_mark_node
)
1619 my_friendly_assert (!current_type_lookups
, 20010301);
1620 current_type_lookups
= lookups
;
1623 my_friendly_assert (!lookups
|| lookups
== error_mark_node
, 20010301);
1626 /* Set things up so that the next deferred access control will succeed.
1627 This is needed for friend declarations see grokdeclarator for details. */
1630 skip_type_access_control ()
1632 type_lookups
= NULL_TREE
;
1635 /* Reset the deferred access control. */
1638 reset_type_access_control ()
1640 type_lookups
= NULL_TREE
;
1641 current_type_lookups
= NULL_TREE
;
1644 /* Begin a function definition declared with DECL_SPECS and
1645 DECLARATOR. Returns non-zero if the function-declaration is
1649 begin_function_definition (decl_specs
, declarator
)
1656 split_specs_attrs (decl_specs
, &specs
, &attrs
);
1657 if (!start_function (specs
, declarator
, attrs
, SF_DEFAULT
))
1660 deferred_type_access_control ();
1661 type_lookups
= error_mark_node
;
1663 /* The things we're about to see are not directly qualified by any
1664 template headers we've seen thus far. */
1665 reset_specialization ();
1670 /* Begin a constructor declarator of the form `SCOPE::NAME'. Returns
1674 begin_constructor_declarator (scope
, name
)
1678 tree result
= build_nt (SCOPE_REF
, scope
, name
);
1679 enter_scope_of (result
);
1683 /* Finish an init-declarator. Returns a DECL. */
1686 finish_declarator (declarator
, declspecs
, attributes
,
1687 prefix_attributes
, initialized
)
1691 tree prefix_attributes
;
1694 return start_decl (declarator
, declspecs
, initialized
, attributes
,
1698 /* Finish a translation unit. */
1701 finish_translation_unit ()
1703 /* In case there were missing closebraces,
1704 get us back to the global binding level. */
1706 while (current_namespace
!= global_namespace
)
1711 /* Finish a template type parameter, specified as AGGR IDENTIFIER.
1712 Returns the parameter. */
1715 finish_template_type_parm (aggr
, identifier
)
1719 if (aggr
!= class_type_node
)
1721 pedwarn ("template type parameters must use the keyword `class' or `typename'");
1722 aggr
= class_type_node
;
1725 return build_tree_list (aggr
, identifier
);
1728 /* Finish a template template parameter, specified as AGGR IDENTIFIER.
1729 Returns the parameter. */
1732 finish_template_template_parm (aggr
, identifier
)
1736 tree decl
= build_decl (TYPE_DECL
, identifier
, NULL_TREE
);
1737 tree tmpl
= build_lang_decl (TEMPLATE_DECL
, identifier
, NULL_TREE
);
1738 DECL_TEMPLATE_PARMS (tmpl
) = current_template_parms
;
1739 DECL_TEMPLATE_RESULT (tmpl
) = decl
;
1740 DECL_ARTIFICIAL (decl
) = 1;
1741 end_template_decl ();
1743 my_friendly_assert (DECL_TEMPLATE_PARMS (tmpl
), 20010110);
1745 return finish_template_type_parm (aggr
, tmpl
);
1748 /* Finish a parameter list, indicated by PARMS. If ELLIPSIS is
1749 non-zero, the parameter list was terminated by a `...'. */
1752 finish_parmlist (parms
, ellipsis
)
1758 /* We mark the PARMS as a parmlist so that declarator processing can
1759 disambiguate certain constructs. */
1760 TREE_PARMLIST (parms
) = 1;
1761 /* We do not append void_list_node here, but leave it to grokparms
1763 PARMLIST_ELLIPSIS_P (parms
) = ellipsis
;
1768 /* Begin a class definition, as indicated by T. */
1771 begin_class_definition (t
)
1774 /* Check the bases are accessible. */
1775 decl_type_access_control (TYPE_NAME (t
));
1776 reset_type_access_control ();
1778 if (processing_template_parmlist
)
1780 cp_error ("definition of `%#T' inside template parameter list", t
);
1781 return error_mark_node
;
1783 if (t
== error_mark_node
1784 || ! IS_AGGR_TYPE (t
))
1786 t
= make_aggr_type (RECORD_TYPE
);
1787 pushtag (make_anon_name (), t
, 0);
1790 /* In a definition of a member class template, we will get here with an
1791 implicit typename, a TYPENAME_TYPE with a type. */
1792 if (TREE_CODE (t
) == TYPENAME_TYPE
)
1795 /* If we generated a partial instantiation of this type, but now
1796 we're seeing a real definition, we're actually looking at a
1797 partial specialization. Consider:
1799 template <class T, class U>
1805 template <class T, class U>
1808 typename X<Y<T, U> >::A a;
1811 template <class T, class U>
1816 We have to undo the effects of the previous partial
1818 if (PARTIAL_INSTANTIATION_P (t
))
1822 /* Unfortunately, when we're not in pedantic mode, we
1823 attempt to actually fill in some of the fields of the
1824 partial instantiation, in order to support the implicit
1825 typename extension. Clear those fields now, in
1826 preparation for the definition here. The fields cleared
1827 here must match those set in instantiate_class_template.
1828 Look for a comment mentioning begin_class_definition
1830 TYPE_BINFO_BASETYPES (t
) = NULL_TREE
;
1831 TYPE_FIELDS (t
) = NULL_TREE
;
1832 TYPE_METHODS (t
) = NULL_TREE
;
1833 CLASSTYPE_TAGS (t
) = NULL_TREE
;
1834 CLASSTYPE_VBASECLASSES (t
) = NULL_TREE
;
1835 TYPE_SIZE (t
) = NULL_TREE
;
1838 /* This isn't a partial instantiation any more. */
1839 PARTIAL_INSTANTIATION_P (t
) = 0;
1841 /* If this type was already complete, and we see another definition,
1843 else if (COMPLETE_TYPE_P (t
))
1844 duplicate_tag_error (t
);
1846 /* Update the location of the decl. */
1847 DECL_SOURCE_FILE (TYPE_NAME (t
)) = input_filename
;
1848 DECL_SOURCE_LINE (TYPE_NAME (t
)) = lineno
;
1850 if (TYPE_BEING_DEFINED (t
))
1852 t
= make_aggr_type (TREE_CODE (t
));
1853 pushtag (TYPE_IDENTIFIER (t
), t
, 0);
1855 maybe_process_partial_specialization (t
);
1857 TYPE_BEING_DEFINED (t
) = 1;
1858 TYPE_PACKED (t
) = flag_pack_struct
;
1859 /* Reset the interface data, at the earliest possible
1860 moment, as it might have been set via a class foo;
1863 tree name
= TYPE_IDENTIFIER (t
);
1865 if (! ANON_AGGRNAME_P (name
))
1867 CLASSTYPE_INTERFACE_ONLY (t
) = interface_only
;
1868 SET_CLASSTYPE_INTERFACE_UNKNOWN_X
1869 (t
, interface_unknown
);
1872 reset_specialization();
1874 /* Make a declaration for this class in its own scope. */
1875 build_self_reference ();
1880 /* Finish the member declaration given by DECL. */
1883 finish_member_declaration (decl
)
1886 if (decl
== error_mark_node
|| decl
== NULL_TREE
)
1889 if (decl
== void_type_node
)
1890 /* The COMPONENT was a friend, not a member, and so there's
1891 nothing for us to do. */
1894 /* We should see only one DECL at a time. */
1895 my_friendly_assert (TREE_CHAIN (decl
) == NULL_TREE
, 0);
1897 /* Set up access control for DECL. */
1899 = (current_access_specifier
== access_private_node
);
1900 TREE_PROTECTED (decl
)
1901 = (current_access_specifier
== access_protected_node
);
1902 if (TREE_CODE (decl
) == TEMPLATE_DECL
)
1904 TREE_PRIVATE (DECL_TEMPLATE_RESULT (decl
)) = TREE_PRIVATE (decl
);
1905 TREE_PROTECTED (DECL_TEMPLATE_RESULT (decl
)) = TREE_PROTECTED (decl
);
1908 /* Mark the DECL as a member of the current class. */
1909 DECL_CONTEXT (decl
) = current_class_type
;
1913 A C language linkage is ignored for the names of class members
1914 and the member function type of class member functions. */
1915 if (DECL_LANG_SPECIFIC (decl
) && DECL_LANGUAGE (decl
) == lang_c
)
1916 DECL_LANGUAGE (decl
) = lang_cplusplus
;
1918 /* Put functions on the TYPE_METHODS list and everything else on the
1919 TYPE_FIELDS list. Note that these are built up in reverse order.
1920 We reverse them (to obtain declaration order) in finish_struct. */
1921 if (TREE_CODE (decl
) == FUNCTION_DECL
1922 || DECL_FUNCTION_TEMPLATE_P (decl
))
1924 /* We also need to add this function to the
1925 CLASSTYPE_METHOD_VEC. */
1926 add_method (current_class_type
, decl
, /*error_p=*/0);
1928 TREE_CHAIN (decl
) = TYPE_METHODS (current_class_type
);
1929 TYPE_METHODS (current_class_type
) = decl
;
1933 /* All TYPE_DECLs go at the end of TYPE_FIELDS. Ordinary fields
1934 go at the beginning. The reason is that lookup_field_1
1935 searches the list in order, and we want a field name to
1936 override a type name so that the "struct stat hack" will
1937 work. In particular:
1939 struct S { enum E { }; int E } s;
1942 is legal. In addition, the FIELD_DECLs must be maintained in
1943 declaration order so that class layout works as expected.
1944 However, we don't need that order until class layout, so we
1945 save a little time by putting FIELD_DECLs on in reverse order
1946 here, and then reversing them in finish_struct_1. (We could
1947 also keep a pointer to the correct insertion points in the
1950 if (TREE_CODE (decl
) == TYPE_DECL
)
1951 TYPE_FIELDS (current_class_type
)
1952 = chainon (TYPE_FIELDS (current_class_type
), decl
);
1955 TREE_CHAIN (decl
) = TYPE_FIELDS (current_class_type
);
1956 TYPE_FIELDS (current_class_type
) = decl
;
1959 /* Enter the DECL into the scope of the class. */
1960 if (TREE_CODE (decl
) != USING_DECL
)
1961 pushdecl_class_level (decl
);
1965 /* Finish a class definition T with the indicate ATTRIBUTES. If SEMI,
1966 the definition is immediately followed by a semicolon. Returns the
1970 finish_class_definition (t
, attributes
, semi
, pop_scope_p
)
1976 /* finish_struct nukes this anyway; if finish_exception does too,
1979 note_got_semicolon (t
);
1981 /* If we got any attributes in class_head, xref_tag will stick them in
1982 TREE_TYPE of the type. Grab them now. */
1983 attributes
= chainon (TREE_TYPE (t
), attributes
);
1984 TREE_TYPE (t
) = NULL_TREE
;
1986 if (TREE_CODE (t
) == ENUMERAL_TYPE
)
1990 t
= finish_struct (t
, attributes
);
1992 note_got_semicolon (t
);
1996 check_for_missing_semicolon (t
);
1998 pop_scope (CP_DECL_CONTEXT (TYPE_MAIN_DECL (t
)));
1999 if (current_function_decl
)
2000 type_lookups
= error_mark_node
;
2001 if (current_scope () == current_function_decl
)
2002 do_pending_defargs ();
2007 /* Finish processing the default argument expressions cached during
2008 the processing of a class definition. */
2011 begin_inline_definitions ()
2013 if (current_scope () == current_function_decl
)
2014 do_pending_inlines ();
2017 /* Finish processing the inline function definitions cached during the
2018 processing of a class definition. */
2021 finish_inline_definitions ()
2023 if (current_class_type
== NULL_TREE
)
2024 clear_inline_text_obstack ();
2027 /* Finish processing the declaration of a member class template
2028 TYPES whose template parameters are given by PARMS. */
2031 finish_member_class_template (types
)
2036 /* If there are declared, but undefined, partial specializations
2037 mixed in with the typespecs they will not yet have passed through
2038 maybe_process_partial_specialization, so we do that here. */
2039 for (t
= types
; t
!= NULL_TREE
; t
= TREE_CHAIN (t
))
2040 if (IS_AGGR_TYPE_CODE (TREE_CODE (TREE_VALUE (t
))))
2041 maybe_process_partial_specialization (TREE_VALUE (t
));
2043 note_list_got_semicolon (types
);
2044 grok_x_components (types
);
2045 if (TYPE_CONTEXT (TREE_VALUE (types
)) != current_class_type
)
2046 /* The component was in fact a friend declaration. We avoid
2047 finish_member_template_decl performing certain checks by
2051 finish_member_template_decl (types
);
2053 /* As with other component type declarations, we do
2054 not store the new DECL on the list of
2059 /* Finish processsing a complete template declaration. The PARMS are
2060 the template parameters. */
2063 finish_template_decl (parms
)
2067 end_template_decl ();
2069 end_specialization ();
2072 /* Finish processing a template-id (which names a type) of the form
2073 NAME < ARGS >. Return the TYPE_DECL for the type named by the
2074 template-id. If ENTERING_SCOPE is non-zero we are about to enter
2075 the scope of template-id indicated. */
2078 finish_template_type (name
, args
, entering_scope
)
2085 decl
= lookup_template_class (name
, args
,
2086 NULL_TREE
, NULL_TREE
,
2087 entering_scope
, /*complain=*/1);
2088 if (decl
!= error_mark_node
)
2089 decl
= TYPE_STUB_DECL (decl
);
2094 /* SR is a SCOPE_REF node. Enter the scope of SR, whether it is a
2095 namespace scope or a class scope. */
2101 tree scope
= TREE_OPERAND (sr
, 0);
2103 if (TREE_CODE (scope
) == NAMESPACE_DECL
)
2105 push_decl_namespace (scope
);
2106 TREE_COMPLEXITY (sr
) = -1;
2108 else if (scope
!= current_class_type
)
2110 if (TREE_CODE (scope
) == TYPENAME_TYPE
)
2112 /* In a declarator for a template class member, the scope will
2113 get here as an implicit typename, a TYPENAME_TYPE with a type. */
2114 scope
= TREE_TYPE (scope
);
2115 TREE_OPERAND (sr
, 0) = scope
;
2117 push_nested_class (scope
, 3);
2118 TREE_COMPLEXITY (sr
) = current_class_depth
;
2122 /* Finish processing a BASE_CLASS with the indicated ACCESS_SPECIFIER.
2123 Return a TREE_LIST containing the ACCESS_SPECIFIER and the
2124 BASE_CLASS, or NULL_TREE if an error occurred. The
2125 ACCESSS_SPECIFIER is one of
2126 access_{default,public,protected_private}[_virtual]_node.*/
2129 finish_base_specifier (access_specifier
, base_class
)
2130 tree access_specifier
;
2135 if (! is_aggr_type (base_class
, 1))
2139 if (CP_TYPE_QUALS (base_class
) != 0)
2141 cp_error ("base class `%T' has cv qualifiers", base_class
);
2142 base_class
= TYPE_MAIN_VARIANT (base_class
);
2144 result
= build_tree_list (access_specifier
, base_class
);
2150 /* Called when multiple declarators are processed. If that is not
2151 premitted in this context, an error is issued. */
2154 check_multiple_declarators ()
2158 In a template-declaration, explicit specialization, or explicit
2159 instantiation the init-declarator-list in the declaration shall
2160 contain at most one declarator.
2162 We don't just use PROCESSING_TEMPLATE_DECL for the first
2163 condition since that would disallow the perfectly legal code,
2164 like `template <class T> struct S { int i, j; };'. */
2165 tree scope
= current_scope ();
2167 if (scope
&& TREE_CODE (scope
) == FUNCTION_DECL
)
2168 /* It's OK to write `template <class T> void f() { int i, j;}'. */
2171 if (PROCESSING_REAL_TEMPLATE_DECL_P ()
2172 || processing_explicit_instantiation
2173 || processing_specialization
)
2174 cp_error ("multiple declarators in template declaration");
2178 finish_typeof (expr
)
2181 if (processing_template_decl
)
2185 t
= make_aggr_type (TYPEOF_TYPE
);
2186 TYPE_FIELDS (t
) = expr
;
2191 if (TREE_CODE (expr
) == OFFSET_REF
)
2192 expr
= resolve_offset_ref (expr
);
2194 return TREE_TYPE (expr
);
2197 /* Generate RTL for the statement T, and its substatements, and any
2198 other statements at its nesting level. */
2204 switch (TREE_CODE (t
))
2207 genrtl_decl_cleanup (CLEANUP_DECL (t
), CLEANUP_EXPR (t
));
2210 case START_CATCH_STMT
:
2211 genrtl_catch_block (TREE_TYPE (t
));
2215 genrtl_ctor_stmt (t
);
2219 genrtl_try_block (t
);
2223 genrtl_eh_spec_block (t
);
2231 genrtl_subobject (SUBOBJECT_CLEANUP (t
));
2235 genrtl_named_return_value ();
2239 my_friendly_abort (19990810);
2244 /* Called from expand_body via walk_tree. Replace all AGGR_INIT_EXPRs
2245 will equivalent CALL_EXPRs. */
2248 simplify_aggr_init_exprs_r (tp
, walk_subtrees
, data
)
2250 int *walk_subtrees ATTRIBUTE_UNUSED
;
2251 void *data ATTRIBUTE_UNUSED
;
2253 tree aggr_init_expr
;
2259 int copy_from_buffer_p
;
2261 aggr_init_expr
= *tp
;
2262 /* We don't need to walk into types; there's nothing in a type that
2263 needs simplification. (And, furthermore, there are places we
2264 actively don't want to go. For example, we don't want to wander
2265 into the default arguments for a FUNCTION_DECL that appears in a
2267 if (TYPE_P (aggr_init_expr
))
2272 /* Only AGGR_INIT_EXPRs are interesting. */
2273 else if (TREE_CODE (aggr_init_expr
) != AGGR_INIT_EXPR
)
2276 /* Form an appropriate CALL_EXPR. */
2277 fn
= TREE_OPERAND (aggr_init_expr
, 0);
2278 args
= TREE_OPERAND (aggr_init_expr
, 1);
2279 slot
= TREE_OPERAND (aggr_init_expr
, 2);
2280 type
= TREE_TYPE (aggr_init_expr
);
2281 if (AGGR_INIT_VIA_CTOR_P (aggr_init_expr
))
2283 /* Replace the first argument with the address of the third
2284 argument to the AGGR_INIT_EXPR. */
2285 mark_addressable (slot
);
2286 args
= tree_cons (NULL_TREE
,
2288 build_pointer_type (TREE_TYPE (slot
)),
2292 call_expr
= build (CALL_EXPR
,
2293 TREE_TYPE (TREE_TYPE (TREE_TYPE (fn
))),
2294 fn
, args
, NULL_TREE
);
2295 TREE_SIDE_EFFECTS (call_expr
) = 1;
2297 /* If we're using the non-reentrant PCC calling convention, then we
2298 need to copy the returned value out of the static buffer into the
2300 copy_from_buffer_p
= 0;
2301 #ifdef PCC_STATIC_STRUCT_RETURN
2302 if (!AGGR_INIT_VIA_CTOR_P (aggr_init_expr
) && aggregate_value_p (type
))
2306 flag_access_control
= 0;
2307 call_expr
= build_aggr_init (slot
, call_expr
, LOOKUP_ONLYCONVERTING
);
2308 flag_access_control
= old_ac
;
2309 copy_from_buffer_p
= 1;
2313 /* If this AGGR_INIT_EXPR indicates the value returned by a
2314 function, then we want to use the value of the initialized
2315 location as the result. */
2316 if (AGGR_INIT_VIA_CTOR_P (aggr_init_expr
) || copy_from_buffer_p
)
2318 call_expr
= build (COMPOUND_EXPR
, type
,
2320 TREE_SIDE_EFFECTS (call_expr
) = 1;
2323 /* Replace the AGGR_INIT_EXPR with the CALL_EXPR. */
2324 TREE_CHAIN (call_expr
) = TREE_CHAIN (aggr_init_expr
);
2327 /* Keep iterating. */
2331 /* Emit all thunks to FN that should be emitted when FN is emitted. */
2334 emit_associated_thunks (fn
)
2337 /* When we use vcall offsets, we emit thunks with the virtual
2338 functions to which they thunk. The whole point of vcall offsets
2339 is so that you can know statically the entire set of thunks that
2340 will ever be needed for a given virtual function, thereby
2341 enabling you to output all the thunks with the function itself. */
2342 if (vcall_offsets_in_vtable_p () && DECL_VIRTUAL_P (fn
))
2347 for (binfo
= TYPE_BINFO (DECL_CONTEXT (fn
));
2349 binfo
= TREE_CHAIN (binfo
))
2350 for (v
= BINFO_VIRTUALS (binfo
); v
; v
= TREE_CHAIN (v
))
2352 && (!integer_zerop (BV_DELTA (v
))
2353 || BV_VCALL_INDEX (v
)))
2358 if (BV_USE_VCALL_INDEX_P (v
))
2360 vcall_index
= BV_VCALL_INDEX (v
);
2361 my_friendly_assert (vcall_index
!= NULL_TREE
, 20000621);
2364 vcall_index
= NULL_TREE
;
2366 thunk
= make_thunk (build1 (ADDR_EXPR
,
2367 vfunc_ptr_type_node
,
2371 /*generate_with_vtable_p=*/0);
2372 use_thunk (thunk
, /*emit_p=*/1);
2377 /* Generate RTL for FN. */
2384 const char *saved_input_filename
;
2386 /* When the parser calls us after finishing the body of a template
2387 function, we don't really want to expand the body. When we're
2388 processing an in-class definition of an inline function,
2389 PROCESSING_TEMPLATE_DECL will no longer be set here, so we have
2390 to look at the function itself. */
2391 if (processing_template_decl
2392 || (DECL_LANG_SPECIFIC (fn
)
2393 && DECL_TEMPLATE_INFO (fn
)
2394 && uses_template_parms (DECL_TI_ARGS (fn
))))
2396 /* Normally, collection only occurs in rest_of_compilation. So,
2397 if we don't collect here, we never collect junk generated
2398 during the processing of templates until we hit a
2399 non-template function. */
2404 /* Replace AGGR_INIT_EXPRs with appropriate CALL_EXPRs. */
2405 walk_tree_without_duplicates (&DECL_SAVED_TREE (fn
),
2406 simplify_aggr_init_exprs_r
,
2409 /* If this is a constructor or destructor body, we have to clone it
2410 under the new ABI. */
2411 if (maybe_clone_body (fn
))
2413 /* We don't want to process FN again, so pretend we've written
2414 it out, even though we haven't. */
2415 TREE_ASM_WRITTEN (fn
) = 1;
2419 /* There's no reason to do any of the work here if we're only doing
2420 semantic analysis; this code just generates RTL. */
2421 if (flag_syntax_only
)
2424 /* If possible, avoid generating RTL for this function. Instead,
2425 just record it as an inline function, and wait until end-of-file
2426 to decide whether to write it out or not. */
2427 if (/* We have to generate RTL if it's not an inline function. */
2428 (DECL_INLINE (fn
) || DECL_COMDAT (fn
))
2429 /* Or if we have to keep all inline functions anyhow. */
2430 && !flag_keep_inline_functions
2431 /* Or if we actually have a reference to the function. */
2432 && !DECL_NEEDED_P (fn
)
2433 /* Or if this is a nested function. */
2434 && !decl_function_context (fn
))
2436 /* Set DECL_EXTERNAL so that assemble_external will be called as
2437 necessary. We'll clear it again in finish_file. */
2438 if (!DECL_EXTERNAL (fn
))
2440 DECL_NOT_REALLY_EXTERN (fn
) = 1;
2441 DECL_EXTERNAL (fn
) = 1;
2443 /* Remember this function. In finish_file we'll decide if
2444 we actually need to write this function out. */
2446 /* Let the back-end know that this funtion exists. */
2447 note_deferral_of_defined_inline_function (fn
);
2451 /* Compute the appropriate object-file linkage for inline
2453 if (DECL_DECLARED_INLINE_P (fn
))
2454 import_export_decl (fn
);
2456 /* Emit any thunks that should be emitted at the same time as FN. */
2457 emit_associated_thunks (fn
);
2459 timevar_push (TV_INTEGRATION
);
2461 /* Optimize the body of the function before expanding it. */
2462 optimize_function (fn
);
2464 timevar_pop (TV_INTEGRATION
);
2465 timevar_push (TV_EXPAND
);
2467 /* Save the current file name and line number. When we expand the
2468 body of the function, we'll set LINENO and INPUT_FILENAME so that
2469 error-mesages come out in the right places. */
2470 saved_lineno
= lineno
;
2471 saved_input_filename
= input_filename
;
2472 lineno
= DECL_SOURCE_LINE (fn
);
2473 input_filename
= DECL_SOURCE_FILE (fn
);
2475 genrtl_start_function (fn
);
2476 current_function_is_thunk
= DECL_THUNK_P (fn
);
2478 /* We don't need to redeclare __FUNCTION__, __PRETTY_FUNCTION__, or
2479 any of the other magic variables we set up when starting a
2481 function_name_declared_p
= 1;
2483 /* Expand the body. */
2484 expand_stmt (DECL_SAVED_TREE (fn
));
2486 /* Statements should always be full-expressions at the outermost set
2487 of curly braces for a function. */
2488 my_friendly_assert (stmts_are_full_exprs_p (), 19990831);
2490 /* The outermost statement for a function contains the line number
2491 recorded when we finished processing the function. */
2492 lineno
= STMT_LINENO (DECL_SAVED_TREE (fn
));
2494 /* Generate code for the function. */
2495 genrtl_finish_function (fn
);
2497 /* If possible, obliterate the body of the function so that it can
2498 be garbage collected. */
2499 if (flag_dump_translation_unit
)
2500 /* Keep the body; we're going to dump it. */
2502 else if (DECL_INLINE (fn
) && flag_inline_trees
)
2503 /* We might need the body of this function so that we can expand
2504 it inline somewhere else. */
2507 /* We don't need the body; blow it away. */
2508 DECL_SAVED_TREE (fn
) = NULL_TREE
;
2510 /* And restore the current source position. */
2511 lineno
= saved_lineno
;
2512 input_filename
= saved_input_filename
;
2513 extract_interface_info ();
2515 timevar_pop (TV_EXPAND
);
2518 /* Start generating the RTL for FN. */
2521 genrtl_start_function (fn
)
2526 /* Tell everybody what function we're processing. */
2527 current_function_decl
= fn
;
2528 /* Get the RTL machinery going for this function. */
2529 init_function_start (fn
, DECL_SOURCE_FILE (fn
), DECL_SOURCE_LINE (fn
));
2530 /* Let everybody know that we're expanding this function, not doing
2531 semantic analysis. */
2534 /* Even though we're inside a function body, we still don't want to
2535 call expand_expr to calculate the size of a variable-sized array.
2536 We haven't necessarily assigned RTL to all variables yet, so it's
2537 not safe to try to expand expressions involving them. */
2538 immediate_size_expand
= 0;
2539 cfun
->x_dont_save_pending_sizes_p
= 1;
2541 /* Let the user know we're compiling this function. */
2542 announce_function (fn
);
2544 /* Initialize the per-function data. */
2545 my_friendly_assert (!DECL_PENDING_INLINE_P (fn
), 20000911);
2546 if (DECL_SAVED_FUNCTION_DATA (fn
))
2548 /* If we already parsed this function, and we're just expanding it
2549 now, restore saved state. */
2550 *cp_function_chain
= *DECL_SAVED_FUNCTION_DATA (fn
);
2552 /* This function is being processed in whole-function mode; we
2553 already did semantic analysis. */
2554 cfun
->x_whole_function_mode_p
= 1;
2556 /* If we decided that we didn't want to inline this function,
2557 make sure the back-end knows that. */
2558 if (!current_function_cannot_inline
)
2559 current_function_cannot_inline
= cp_function_chain
->cannot_inline
;
2561 /* We don't need the saved data anymore. */
2562 free (DECL_SAVED_FUNCTION_DATA (fn
));
2563 DECL_SAVED_FUNCTION_DATA (fn
) = NULL
;
2566 /* Tell the cross-reference machinery that we're defining this
2568 GNU_xref_function (fn
, DECL_ARGUMENTS (fn
));
2570 /* Keep track of how many functions we're presently expanding. */
2573 /* Create a binding level for the parameters. */
2574 expand_start_bindings (2);
2575 /* Clear out any previously saved instructions for this function, in
2576 case it was defined more than once. */
2577 DECL_SAVED_INSNS (fn
) = NULL
;
2578 /* Go through the PARM_DECLs for this function to see if any need
2580 for (parm
= DECL_ARGUMENTS (fn
); parm
; parm
= TREE_CHAIN (parm
))
2581 if (TREE_TYPE (parm
) != error_mark_node
2582 && TYPE_HAS_NONTRIVIAL_DESTRUCTOR (TREE_TYPE (parm
)))
2584 expand_function_start (fn
, /*parms_have_cleanups=*/1);
2588 expand_function_start (fn
, /*parms_have_cleanups=*/0);
2589 /* If this function is `main'. */
2590 if (DECL_MAIN_P (fn
))
2591 expand_main_function ();
2592 /* Create a binding contour which can be used to catch
2593 cleanup-generated temporaries. */
2594 expand_start_bindings (2);
2597 /* Finish generating the RTL for FN. */
2600 genrtl_finish_function (fn
)
2603 tree no_return_label
= NULL_TREE
;
2606 if (write_symbols
!= NO_DEBUG
)
2608 /* Keep this code around in case we later want to control debug info
2609 based on whether a type is "used". (jason 1999-11-11) */
2611 tree ttype
= target_type (fntype
);
2614 if (IS_AGGR_TYPE (ttype
))
2615 /* Let debugger know it should output info for this type. */
2616 note_debug_info_needed (ttype
);
2618 for (parmdecl
= DECL_ARGUMENTS (fndecl
); parmdecl
; parmdecl
= TREE_CHAIN (parmdecl
))
2620 ttype
= target_type (TREE_TYPE (parmdecl
));
2621 if (IS_AGGR_TYPE (ttype
))
2622 /* Let debugger know it should output info for this type. */
2623 note_debug_info_needed (ttype
);
2628 /* Clean house because we will need to reorder insns here. */
2629 do_pending_stack_adjust ();
2631 if (!dtor_label
&& !DECL_CONSTRUCTOR_P (fn
)
2632 && return_label
!= NULL_RTX
2633 && current_function_return_value
== NULL_TREE
2634 && ! DECL_NAME (DECL_RESULT (current_function_decl
)))
2635 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
2637 /* If this function is supposed to return a value, ensure that
2638 we do not fall into the cleanups by mistake. The end of our
2639 function will look like this:
2641 user code (may have return stmt somewhere)
2642 goto no_return_label
2647 NOTE_INSN_FUNCTION_END
2651 If the user omits a return stmt in the USER CODE section, we
2652 will have a control path which reaches NOTE_INSN_FUNCTION_END.
2653 Otherwise, we won't. */
2654 if (no_return_label
)
2656 DECL_CONTEXT (no_return_label
) = fn
;
2657 DECL_INITIAL (no_return_label
) = error_mark_node
;
2658 DECL_SOURCE_FILE (no_return_label
) = input_filename
;
2659 DECL_SOURCE_LINE (no_return_label
) = lineno
;
2660 expand_goto (no_return_label
);
2665 /* Remove the binding contour which is used to catch
2666 cleanup-generated temporaries. */
2667 expand_end_bindings (0, 0, 0);
2670 /* Emit label at beginning of cleanup code for parameters. */
2671 emit_label (cleanup_label
);
2674 /* Finish building code that will trigger warnings if users forget
2675 to make their functions return values. */
2677 emit_jump (return_label
);
2678 if (no_return_label
)
2680 /* We don't need to call `expand_*_return' here because we don't
2681 need any cleanups here--this path of code is only for error
2682 checking purposes. */
2683 expand_label (no_return_label
);
2686 /* We hard-wired immediate_size_expand to zero in start_function.
2687 Expand_function_end will decrement this variable. So, we set the
2688 variable to one here, so that after the decrement it will remain
2690 immediate_size_expand
= 1;
2692 /* Generate rtl for function exit. */
2693 expand_function_end (input_filename
, lineno
, 1);
2695 /* If this is a nested function (like a template instantiation that
2696 we're compiling in the midst of compiling something else), push a
2697 new GC context. That will keep local variables on the stack from
2698 being collected while we're doing the compilation of this
2700 if (function_depth
> 1)
2701 ggc_push_context ();
2703 /* There's no need to defer outputting this function any more; we
2704 know we want to output it. */
2705 DECL_DEFER_OUTPUT (fn
) = 0;
2707 /* Run the optimizers and output the assembler code for this
2709 rest_of_compilation (fn
);
2711 /* Undo the call to ggc_push_context above. */
2712 if (function_depth
> 1)
2715 if (DECL_SAVED_INSNS (fn
) && ! TREE_ASM_WRITTEN (fn
))
2717 /* Set DECL_EXTERNAL so that assemble_external will be called as
2718 necessary. We'll clear it again in finish_file. */
2719 if (! DECL_EXTERNAL (fn
))
2720 DECL_NOT_REALLY_EXTERN (fn
) = 1;
2721 DECL_EXTERNAL (fn
) = 1;
2726 /* Keep this code around in case we later want to control debug info
2727 based on whether a type is "used". (jason 1999-11-11) */
2729 if (ctype
&& TREE_ASM_WRITTEN (fn
))
2730 note_debug_info_needed (ctype
);
2733 /* If this function is marked with the constructor attribute, add it
2734 to the list of functions to be called along with constructors
2735 from static duration objects. */
2736 if (DECL_STATIC_CONSTRUCTOR (fn
))
2737 static_ctors
= tree_cons (NULL_TREE
, fn
, static_ctors
);
2739 /* If this function is marked with the destructor attribute, add it
2740 to the list of functions to be called along with destructors from
2741 static duration objects. */
2742 if (DECL_STATIC_DESTRUCTOR (fn
))
2743 static_dtors
= tree_cons (NULL_TREE
, fn
, static_dtors
);
2747 /* If we don't need the RTL for this function anymore, stop pointing
2748 to it. That's especially important for LABEL_DECLs, since you
2749 can reach all the instructions in the function from the
2750 CODE_LABEL stored in the DECL_RTL for the LABEL_DECL. */
2751 if (!DECL_SAVED_INSNS (fn
))
2755 /* Walk the BLOCK-tree, clearing DECL_RTL for LABEL_DECLs and
2756 non-static local variables. */
2757 walk_tree_without_duplicates (&DECL_SAVED_TREE (fn
),
2761 /* Clear out the RTL for the arguments. */
2762 for (t
= DECL_ARGUMENTS (fn
); t
; t
= TREE_CHAIN (t
))
2764 SET_DECL_RTL (t
, NULL_RTX
);
2765 DECL_INCOMING_RTL (t
) = NULL_RTX
;
2768 if (!(flag_inline_trees
&& DECL_INLINE (fn
)))
2769 /* DECL_INITIAL must remain nonzero so we know this was an
2770 actual function definition. */
2771 DECL_INITIAL (fn
) = error_mark_node
;
2774 /* Let the error reporting routines know that we're outside a
2775 function. For a nested function, this value is used in
2776 pop_cp_function_context and then reset via pop_function_context. */
2777 current_function_decl
= NULL_TREE
;
2780 /* Clear out the DECL_RTL for the non-static variables in BLOCK and
2784 clear_decl_rtl (tp
, walk_subtrees
, data
)
2786 int *walk_subtrees ATTRIBUTE_UNUSED
;
2787 void *data ATTRIBUTE_UNUSED
;
2789 if (nonstatic_local_decl_p (*tp
))
2790 SET_DECL_RTL (*tp
, NULL_RTX
);
2795 /* Perform initialization related to this module. */
2798 init_cp_semantics ()
2800 lang_expand_stmt
= cp_expand_stmt
;