1 /****************************************************************************
3 * GNAT COMPILER COMPONENTS *
11 * Copyright (C) 1992-2001 Free Software Foundation, Inc. *
13 * GNAT is free software; you can redistribute it and/or modify it under *
14 * terms of the GNU General Public License as published by the Free Soft- *
15 * ware Foundation; either version 2, or (at your option) any later ver- *
16 * sion. GNAT is distributed in the hope that it will be useful, but WITH- *
17 * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
18 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License *
19 * for more details. You should have received a copy of the GNU General *
20 * Public License distributed with GNAT; see file COPYING. If not, write *
21 * to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, *
22 * MA 02111-1307, USA. *
24 * GNAT was originally developed by the GNAT team at New York University. *
25 * It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). *
27 ****************************************************************************/
29 /* Ada language-specific GC tree codes. */
30 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM,
32 __DUMMY = LAST_AND_UNUSED_TREE_CODE,
33 #include "ada-tree.def"
38 /* Flags added to GCC type nodes. */
40 /* For RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE, nonzero if this is a
41 record being used as a fat pointer (only true for RECORD_TYPE). */
42 #define TYPE_IS_FAT_POINTER_P(NODE) TYPE_LANG_FLAG_0 (NODE)
44 #define TYPE_FAT_POINTER_P(NODE) \
45 (TREE_CODE (NODE) == RECORD_TYPE && TYPE_IS_FAT_POINTER_P (NODE))
47 /* For integral types, nonzero if this is a packed array type. Such
48 types should not be extended to a larger size. */
49 #define TYPE_PACKED_ARRAY_TYPE_P(NODE) TYPE_LANG_FLAG_0 (NODE)
51 /* For INTEGER_TYPE, nonzero if this is a modular type with a modulus that
52 is not equal to two to the power of its mode's size. */
53 #define TYPE_MODULAR_P(NODE) TYPE_LANG_FLAG_1 (INTEGER_TYPE_CHECK (NODE))
55 /* For ARRAY_TYPE, nonzero if this type corresponds to a dimension of
56 an Ada array other than the first. */
57 #define TYPE_MULTI_ARRAY_P(NODE) TYPE_LANG_FLAG_1 (ARRAY_TYPE_CHECK (NODE))
59 /* For FUNCTION_TYPE, nonzero if this denotes a function returning an
60 unconstrained array or record. */
61 #define TYPE_RETURNS_UNCONSTRAINED_P(NODE) \
62 TYPE_LANG_FLAG_1 (FUNCTION_TYPE_CHECK (NODE))
64 /* For RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE, nonzero if this denotes
65 a left-justified modular type (will only be true for RECORD_TYPE). */
66 #define TYPE_LEFT_JUSTIFIED_MODULAR_P(NODE) TYPE_LANG_FLAG_1 (NODE)
68 /* Nonzero in an arithmetic subtype if this is a subtype not known to the
70 #define TYPE_EXTRA_SUBTYPE_P(NODE) TYPE_LANG_FLAG_2 (NODE)
72 /* Nonzero for composite types if this is a by-reference type. */
73 #define TYPE_BY_REFERENCE_P(NODE) TYPE_LANG_FLAG_2 (NODE)
75 /* For RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE, nonzero if this is the
76 type for an object whose type includes its template in addition to
77 its value (only true for RECORD_TYPE). */
78 #define TYPE_CONTAINS_TEMPLATE_P(NODE) TYPE_LANG_FLAG_3 (NODE)
80 /* For INTEGER_TYPE, nonzero if this really represents a VAX
81 floating-point type. */
82 #define TYPE_VAX_FLOATING_POINT_P(NODE) \
83 TYPE_LANG_FLAG_3 (INTEGER_TYPE_CHECK (NODE))
85 /* True if NODE is a thin pointer. */
86 #define TYPE_THIN_POINTER_P(NODE) \
87 (POINTER_TYPE_P (NODE) \
88 && TREE_CODE (TREE_TYPE (NODE)) == RECORD_TYPE \
89 && TYPE_CONTAINS_TEMPLATE_P (TREE_TYPE (NODE)))
91 /* True if TYPE is either a fat or thin pointer to an unconstrained
93 #define TYPE_FAT_OR_THIN_POINTER_P(NODE) \
94 (TYPE_FAT_POINTER_P (NODE) || TYPE_THIN_POINTER_P (NODE))
96 /* For INTEGER_TYPEs, nonzero if the type has a biased representation. */
97 #define TYPE_BIASED_REPRESENTATION_P(NODE) \
98 TYPE_LANG_FLAG_4 (INTEGER_TYPE_CHECK (NODE))
100 /* For ARRAY_TYPEs, nonzero if the array type has Convention_Fortran. */
101 #define TYPE_CONVENTION_FORTRAN_P(NODE) \
102 TYPE_LANG_FLAG_4 (ARRAY_TYPE_CHECK (NODE))
104 /* For FUNCTION_TYPEs, nonzero if the function returns by reference. */
105 #define TYPE_RETURNS_BY_REF_P(NODE) \
106 TYPE_LANG_FLAG_4 (FUNCTION_TYPE_CHECK (NODE))
108 /* For VOID_TYPE, ENUMERAL_TYPE, UNION_TYPE, and RECORD_TYPE, nonzero if this
109 is a dummy type, made to correspond to a private or incomplete type. */
110 #define TYPE_DUMMY_P(NODE) TYPE_LANG_FLAG_4 (NODE)
112 /* True if TYPE is such a dummy type. */
113 #define TYPE_IS_DUMMY_P(NODE) \
114 ((TREE_CODE (NODE) == VOID_TYPE || TREE_CODE (NODE) == RECORD_TYPE \
115 || TREE_CODE (NODE) == UNION_TYPE || TREE_CODE (NODE) == ENUMERAL_TYPE) \
116 && TYPE_DUMMY_P (NODE))
118 /* For an INTEGER_TYPE, nonzero if TYPE_ACTUAL_BOUNDS is present. */
119 #define TYPE_HAS_ACTUAL_BOUNDS_P(NODE) \
120 TYPE_LANG_FLAG_5 (INTEGER_TYPE_CHECK (NODE))
122 /* For a RECORD_TYPE, nonzero if this was made just to supply needed
123 padding or alignment. */
124 #define TYPE_IS_PADDING_P(NODE) TYPE_LANG_FLAG_5 (RECORD_TYPE_CHECK (NODE))
126 /* This field is only defined for FUNCTION_TYPE nodes. If the Ada
127 subprogram contains no parameters passed by copy in/copy out then this
128 field is 0. Otherwise it points to a list of nodes used to specify the
129 return values of the out (or in out) parameters that qualify to be passed
130 by copy in copy out. It is a CONSTRUCTOR. For a full description of the
131 cico parameter passing mechanism refer to the routine gnat_to_gnu_entity. */
132 #define TYPE_CI_CO_LIST(NODE) \
133 (tree) TYPE_LANG_SPECIFIC (FUNCTION_TYPE_CHECK (NODE))
135 /* For an INTEGER_TYPE with TYPE_MODULAR_P, this is the value of the
137 #define TYPE_MODULUS(NODE) \
138 (tree) TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE))
140 /* For an INTEGER_TYPE that is the TYPE_DOMAIN of some ARRAY_TYPE, points to
141 the type corresponding to the Ada index type. */
142 #define TYPE_INDEX_TYPE(NODE) \
143 (tree) TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE))
145 /* For an INTEGER_TYPE with TYPE_VAX_FLOATING_POINT_P, stores the
147 #define TYPE_DIGITS_VALUE(NODE) \
148 (long) TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE))
150 /* For INTEGER_TYPE, stores the RM_Size of the type. */
151 #define TYPE_RM_SIZE_INT(NODE) TYPE_VALUES (INTEGER_TYPE_CHECK (NODE))
153 /* Likewise for ENUMERAL_TYPE. */
154 #define TYPE_RM_SIZE_ENUM(NODE) \
155 (tree) TYPE_LANG_SPECIFIC (ENUMERAL_TYPE_CHECK (NODE))
157 #define TYPE_RM_SIZE(NODE) \
158 (TREE_CODE (NODE) == ENUMERAL_TYPE ? TYPE_RM_SIZE_ENUM (NODE) \
159 : TREE_CODE (NODE) == INTEGER_TYPE ? TYPE_RM_SIZE_INT (NODE) \
162 /* For a RECORD_TYPE that is a fat pointer, point to the type for the
163 unconstrained object. Likewise for a RECORD_TYPE that is pointed
164 to by a thin pointer. */
165 #define TYPE_UNCONSTRAINED_ARRAY(NODE) \
166 (tree) TYPE_LANG_SPECIFIC (RECORD_TYPE_CHECK (NODE))
168 /* For other RECORD_TYPEs and all UNION_TYPEs and QUAL_UNION_TYPEs, the Ada
169 size of the object. This differs from the GCC size in that it does not
170 include any rounding up to the alignment of the type. */
171 #define TYPE_ADA_SIZE(NODE) (tree) TYPE_LANG_SPECIFIC (NODE)
173 /* For an INTEGER_TYPE with TYPE_HAS_ACTUAL_BOUNDS_P or an ARRAY_TYPE, this is
174 the index type that should be used when the actual bounds are required for
175 a template. This is used in the case of packed arrays. */
176 #define TYPE_ACTUAL_BOUNDS(NODE) (tree) TYPE_LANG_SPECIFIC (NODE)
178 /* In an UNCONSTRAINED_ARRAY_TYPE, points to the record containing both
179 the template and object. */
180 #define TYPE_OBJECT_RECORD_TYPE(NODE) TYPE_MIN_VALUE (NODE)
182 /* Nonzero in a FUNCTION_DECL that represents a stubbed function
184 #define DECL_STUBBED_P(NODE) DECL_LANG_FLAG_0 (FUNCTION_DECL_CHECK (NODE))
186 /* Nonzero if this decl is always used by reference; i.e., an INDIRECT_REF
187 is needed to access the object. */
188 #define DECL_BY_REF_P(NODE) DECL_LANG_FLAG_1 (NODE)
190 /* Nonzero if this decl is a PARM_DECL for an Ada array being passed to a
191 foreign convention subprogram. */
192 #define DECL_BY_COMPONENT_PTR_P(NODE) DECL_LANG_FLAG_2 (NODE)
194 /* Nonzero in a FIELD_DECL that is a dummy built for some internal reason. */
195 #define DECL_INTERNAL_P(NODE) DECL_LANG_FLAG_3 (FIELD_DECL_CHECK (NODE))
197 /* Nonzero in a FUNCTION_DECL that corresponds to an elaboration procedure. */
198 #define DECL_ELABORATION_PROC_P(NODE) \
199 DECL_LANG_FLAG_3 (FUNCTION_DECL_CHECK (NODE))
201 /* Nonzero if this is a decl for a pointer that points to something which
202 is readonly. Used mostly for fat pointers. */
203 #define DECL_POINTS_TO_READONLY_P(NODE) DECL_LANG_FLAG_4 (NODE)
205 /* Nonzero in a FIELD_DECL if there was a record rep clause. */
206 #define DECL_HAS_REP_P(NODE) DECL_LANG_FLAG_5 (FIELD_DECL_CHECK (NODE))
208 /* Nonzero in a PARM_DECL if we are to pass by descriptor. */
209 #define DECL_BY_DESCRIPTOR_P(NODE) DECL_LANG_FLAG_5 (PARM_DECL_CHECK (NODE))
211 /* In a CONST_DECL, points to a VAR_DECL that is allocatable to
212 memory. Used when a scalar constant is aliased or has its
214 #define DECL_CONST_CORRESPONDING_VAR(NODE) \
215 (tree) DECL_LANG_SPECIFIC (CONST_DECL_CHECK (NODE))
217 /* In a FIELD_DECL, points to the FIELD_DECL that was the ultimate
218 source of the decl. */
219 #define DECL_ORIGINAL_FIELD(NODE) \
220 (tree) DECL_LANG_SPECIFIC (FIELD_DECL_CHECK (NODE))
222 /* In a FIELD_DECL corresponding to a discriminant, contains the
223 discriminant number. */
224 #define DECL_DISCRIMINANT_NUMBER(NODE) DECL_INITIAL (FIELD_DECL_CHECK (NODE))
226 /* This is a horrible kludge to store the loop_id of a loop into a tree
227 node. We need to find some other place to store it! */
228 #define TREE_LOOP_ID(NODE) (TREE_CHECK (NODE, GNAT_LOOP_ID)->real_cst.rtl)