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/****************************************************************************
* *
* GNAT COMPILER COMPONENTS *
* *
* A D A - T R E E *
* *
* C Header File *
* *
* Copyright (C) 1992-2006 Free Software Foundation, Inc. *
* *
* GNAT is free software; you can redistribute it and/or modify it under *
* terms of the GNU General Public License as published by the Free Soft- *
* ware Foundation; either version 2, or (at your option) any later ver- *
* sion. GNAT is distributed in the hope that it will be useful, but WITH- *
* OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License *
* for more details. You should have received a copy of the GNU General *
* Public License distributed with GNAT; see file COPYING. If not, write *
* to the Free Software Foundation, 51 Franklin Street, Fifth Floor, *
* Boston, MA 02110-1301, USA. *
* *
* GNAT was originally developed by the GNAT team at New York University. *
* Extensive contributions were provided by Ada Core Technologies Inc. *
* *
****************************************************************************/
/* Ada language-specific GC tree codes. */
#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM,
enum gnat_tree_code {
__DUMMY = LAST_AND_UNUSED_TREE_CODE,
#include "ada-tree.def"
LAST_GNAT_TREE_CODE
};
#undef DEFTREECODE
/* Ada uses the lang_decl and lang_type fields to hold a tree. */
union lang_tree_node
GTY((desc ("0"),
chain_next ("(union lang_tree_node *)TREE_CHAIN (&%h.t)")))
{
union tree_node GTY((tag ("0"))) t;
};
struct lang_decl GTY(()) {tree t; };
struct lang_type GTY(()) {tree t; };
/* Define macros to get and set the tree in TYPE_ and DECL_LANG_SPECIFIC. */
#define GET_TYPE_LANG_SPECIFIC(NODE) \
(TYPE_LANG_SPECIFIC (NODE) ? TYPE_LANG_SPECIFIC (NODE)->t : NULL_TREE)
#define SET_TYPE_LANG_SPECIFIC(NODE, X) \
(TYPE_LANG_SPECIFIC (NODE) \
= (TYPE_LANG_SPECIFIC (NODE) \
? TYPE_LANG_SPECIFIC (NODE) : ggc_alloc (sizeof (struct lang_type)))) \
->t = X;
#define GET_DECL_LANG_SPECIFIC(NODE) \
(DECL_LANG_SPECIFIC (NODE) ? DECL_LANG_SPECIFIC (NODE)->t : NULL_TREE)
#define SET_DECL_LANG_SPECIFIC(NODE, VALUE) \
(DECL_LANG_SPECIFIC (NODE) \
= (DECL_LANG_SPECIFIC (NODE) \
? DECL_LANG_SPECIFIC (NODE) : ggc_alloc (sizeof (struct lang_decl)))) \
->t = VALUE;
/* Flags added to GCC type nodes. */
/* For RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE, nonzero if this is a
record being used as a fat pointer (only true for RECORD_TYPE). */
#define TYPE_IS_FAT_POINTER_P(NODE) \
TYPE_LANG_FLAG_0 (RECORD_OR_UNION_CHECK (NODE))
#define TYPE_FAT_POINTER_P(NODE) \
(TREE_CODE (NODE) == RECORD_TYPE && TYPE_IS_FAT_POINTER_P (NODE))
/* For integral types and array types, nonzero if this is a packed array type.
Such types should not be extended to a larger size. */
#define TYPE_PACKED_ARRAY_TYPE_P(NODE) TYPE_LANG_FLAG_0 (NODE)
#define TYPE_IS_PACKED_ARRAY_TYPE_P(NODE) \
((TREE_CODE (NODE) == INTEGER_TYPE || TREE_CODE (NODE) == ARRAY_TYPE) \
&& TYPE_PACKED_ARRAY_TYPE_P (NODE))
/* For INTEGER_TYPE, nonzero if this is a modular type with a modulus that
is not equal to two to the power of its mode's size. */
#define TYPE_MODULAR_P(NODE) TYPE_LANG_FLAG_1 (INTEGER_TYPE_CHECK (NODE))
/* For ARRAY_TYPE, nonzero if this type corresponds to a dimension of
an Ada array other than the first. */
#define TYPE_MULTI_ARRAY_P(NODE) TYPE_LANG_FLAG_1 (ARRAY_TYPE_CHECK (NODE))
/* For FUNCTION_TYPE, nonzero if this denotes a function returning an
unconstrained array or record. */
#define TYPE_RETURNS_UNCONSTRAINED_P(NODE) \
TYPE_LANG_FLAG_1 (FUNCTION_TYPE_CHECK (NODE))
/* For RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE, nonzero if this denotes
a justified modular type (will only be true for RECORD_TYPE). */
#define TYPE_JUSTIFIED_MODULAR_P(NODE) \
TYPE_LANG_FLAG_1 (RECORD_OR_UNION_CHECK (NODE))
/* Nonzero in an arithmetic subtype if this is a subtype not known to the
front-end. */
#define TYPE_EXTRA_SUBTYPE_P(NODE) TYPE_LANG_FLAG_2 (NODE)
/* Nonzero for composite types if this is a by-reference type. */
#define TYPE_BY_REFERENCE_P(NODE) TYPE_LANG_FLAG_2 (NODE)
/* For RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE, nonzero if this is the
type for an object whose type includes its template in addition to
its value (only true for RECORD_TYPE). */
#define TYPE_CONTAINS_TEMPLATE_P(NODE) \
TYPE_LANG_FLAG_3 (RECORD_OR_UNION_CHECK (NODE))
/* For INTEGER_TYPE, nonzero if this really represents a VAX
floating-point type. */
#define TYPE_VAX_FLOATING_POINT_P(NODE) \
TYPE_LANG_FLAG_3 (INTEGER_TYPE_CHECK (NODE))
/* True if NODE is a thin pointer. */
#define TYPE_THIN_POINTER_P(NODE) \
(POINTER_TYPE_P (NODE) \
&& TREE_CODE (TREE_TYPE (NODE)) == RECORD_TYPE \
&& TYPE_CONTAINS_TEMPLATE_P (TREE_TYPE (NODE)))
/* True if TYPE is either a fat or thin pointer to an unconstrained
array. */
#define TYPE_FAT_OR_THIN_POINTER_P(NODE) \
(TYPE_FAT_POINTER_P (NODE) || TYPE_THIN_POINTER_P (NODE))
/* For INTEGER_TYPEs, nonzero if the type has a biased representation. */
#define TYPE_BIASED_REPRESENTATION_P(NODE) \
TYPE_LANG_FLAG_4 (INTEGER_TYPE_CHECK (NODE))
/* For ARRAY_TYPEs, nonzero if the array type has Convention_Fortran. */
#define TYPE_CONVENTION_FORTRAN_P(NODE) \
TYPE_LANG_FLAG_4 (ARRAY_TYPE_CHECK (NODE))
/* For FUNCTION_TYPEs, nonzero if the function returns by reference. */
#define TYPE_RETURNS_BY_REF_P(NODE) \
TYPE_LANG_FLAG_4 (FUNCTION_TYPE_CHECK (NODE))
/* For FUNCTION_TYPEs, nonzero if function returns by being passed a pointer
to a place to store its result. */
#define TYPE_RETURNS_BY_TARGET_PTR_P(NODE) \
TYPE_LANG_FLAG_5 (FUNCTION_TYPE_CHECK (NODE))
/* For VOID_TYPE, ENUMERAL_TYPE, UNION_TYPE, and RECORD_TYPE, nonzero if this
is a dummy type, made to correspond to a private or incomplete type. */
#define TYPE_DUMMY_P(NODE) TYPE_LANG_FLAG_4 (NODE)
/* True if TYPE is such a dummy type. */
#define TYPE_IS_DUMMY_P(NODE) \
((TREE_CODE (NODE) == VOID_TYPE || TREE_CODE (NODE) == RECORD_TYPE \
|| TREE_CODE (NODE) == UNION_TYPE || TREE_CODE (NODE) == ENUMERAL_TYPE) \
&& TYPE_DUMMY_P (NODE))
/* For an INTEGER_TYPE, nonzero if TYPE_ACTUAL_BOUNDS is present. */
#define TYPE_HAS_ACTUAL_BOUNDS_P(NODE) \
TYPE_LANG_FLAG_5 (INTEGER_TYPE_CHECK (NODE))
/* For a RECORD_TYPE, nonzero if this was made just to supply needed
padding or alignment. */
#define TYPE_IS_PADDING_P(NODE) TYPE_LANG_FLAG_5 (RECORD_TYPE_CHECK (NODE))
/* This field is only defined for FUNCTION_TYPE nodes. If the Ada
subprogram contains no parameters passed by copy in/copy out then this
field is 0. Otherwise it points to a list of nodes used to specify the
return values of the out (or in out) parameters that qualify to be passed
by copy in copy out. It is a CONSTRUCTOR. For a full description of the
cico parameter passing mechanism refer to the routine gnat_to_gnu_entity. */
#define TYPE_CI_CO_LIST(NODE) TYPE_LANG_SLOT_1 (FUNCTION_TYPE_CHECK (NODE))
/* For an INTEGER_TYPE with TYPE_MODULAR_P, this is the value of the
modulus. */
#define TYPE_MODULUS(NODE) GET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE))
#define SET_TYPE_MODULUS(NODE, X) \
SET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE), X)
/* For an INTEGER_TYPE that is the TYPE_DOMAIN of some ARRAY_TYPE, points to
the type corresponding to the Ada index type. */
#define TYPE_INDEX_TYPE(NODE) \
GET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE))
#define SET_TYPE_INDEX_TYPE(NODE, X) \
SET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE), X)
/* For an INTEGER_TYPE with TYPE_VAX_FLOATING_POINT_P, stores the
Digits_Value. */
#define TYPE_DIGITS_VALUE(NODE) \
GET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE))
#define SET_TYPE_DIGITS_VALUE(NODE, X) \
SET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE), X)
/* For numeric types, stores the RM_Size of the type. */
#define TYPE_RM_SIZE_NUM(NODE) TYPE_LANG_SLOT_1 (NUMERICAL_TYPE_CHECK (NODE))
#define TYPE_RM_SIZE(NODE) \
(INTEGRAL_TYPE_P (NODE) || TREE_CODE (NODE) == REAL_TYPE \
? TYPE_RM_SIZE_NUM (NODE) : 0)
/* For a RECORD_TYPE that is a fat pointer, point to the type for the
unconstrained object. Likewise for a RECORD_TYPE that is pointed
to by a thin pointer. */
#define TYPE_UNCONSTRAINED_ARRAY(NODE) \
GET_TYPE_LANG_SPECIFIC (RECORD_TYPE_CHECK (NODE))
#define SET_TYPE_UNCONSTRAINED_ARRAY(NODE, X) \
SET_TYPE_LANG_SPECIFIC (RECORD_TYPE_CHECK (NODE), X)
/* For other RECORD_TYPEs and all UNION_TYPEs and QUAL_UNION_TYPEs, the Ada
size of the object. This differs from the GCC size in that it does not
include any rounding up to the alignment of the type. */
#define TYPE_ADA_SIZE(NODE) \
GET_TYPE_LANG_SPECIFIC (RECORD_OR_UNION_CHECK (NODE))
#define SET_TYPE_ADA_SIZE(NODE, X) \
SET_TYPE_LANG_SPECIFIC (RECORD_OR_UNION_CHECK (NODE), X)
/* For an INTEGER_TYPE with TYPE_HAS_ACTUAL_BOUNDS_P or an ARRAY_TYPE, this is
the index type that should be used when the actual bounds are required for
a template. This is used in the case of packed arrays. */
#define TYPE_ACTUAL_BOUNDS(NODE) \
GET_TYPE_LANG_SPECIFIC (TREE_CHECK2 (NODE, INTEGER_TYPE, ARRAY_TYPE))
#define SET_TYPE_ACTUAL_BOUNDS(NODE, X) \
SET_TYPE_LANG_SPECIFIC (TREE_CHECK2 (NODE, INTEGER_TYPE, ARRAY_TYPE), X)
/* In an UNCONSTRAINED_ARRAY_TYPE, points to the record containing both
the template and object.
??? We also put this on an ENUMERAL_TYPE that's dummy. Technically,
this is a conflict on the minval field, but there doesn't seem to be
simple fix, so we'll live with this kludge for now. */
#define TYPE_OBJECT_RECORD_TYPE(NODE) \
(TREE_CHECK2 ((NODE), UNCONSTRAINED_ARRAY_TYPE, ENUMERAL_TYPE)->type.minval)
/* Nonzero in a FUNCTION_DECL that represents a stubbed function
discriminant. */
#define DECL_STUBBED_P(NODE) DECL_LANG_FLAG_0 (FUNCTION_DECL_CHECK (NODE))
/* Nonzero in a VAR_DECL if it is guaranteed to be constant after having
been elaborated and TREE_READONLY is not set on it. */
#define DECL_READONLY_ONCE_ELAB(NODE) DECL_LANG_FLAG_0 (VAR_DECL_CHECK (NODE))
/* Nonzero if this decl is always used by reference; i.e., an INDIRECT_REF
is needed to access the object. */
#define DECL_BY_REF_P(NODE) DECL_LANG_FLAG_1 (NODE)
/* Nonzero if this decl is a PARM_DECL for an Ada array being passed to a
foreign convention subprogram. */
#define DECL_BY_COMPONENT_PTR_P(NODE) DECL_LANG_FLAG_2 (PARM_DECL_CHECK (NODE))
/* Nonzero in a FIELD_DECL that is a dummy built for some internal reason. */
#define DECL_INTERNAL_P(NODE) DECL_LANG_FLAG_3 (FIELD_DECL_CHECK (NODE))
/* Nonzero in a FUNCTION_DECL that corresponds to an elaboration procedure. */
#define DECL_ELABORATION_PROC_P(NODE) \
DECL_LANG_FLAG_3 (FUNCTION_DECL_CHECK (NODE))
/* Nonzero if this is a decl for a pointer that points to something which
is readonly. Used mostly for fat pointers. */
#define DECL_POINTS_TO_READONLY_P(NODE) DECL_LANG_FLAG_4 (NODE)
/* Nonzero in a FIELD_DECL if there was a record rep clause. */
#define DECL_HAS_REP_P(NODE) DECL_LANG_FLAG_5 (FIELD_DECL_CHECK (NODE))
/* Nonzero in a PARM_DECL if we are to pass by descriptor. */
#define DECL_BY_DESCRIPTOR_P(NODE) DECL_LANG_FLAG_5 (PARM_DECL_CHECK (NODE))
/* Nonzero in a VAR_DECL if it is a pointer renaming a global object. */
#define DECL_RENAMING_GLOBAL_P(NODE) DECL_LANG_FLAG_5 (VAR_DECL_CHECK (NODE))
/* In a CONST_DECL, points to a VAR_DECL that is allocatable to
memory. Used when a scalar constant is aliased or has its
address taken. */
#define DECL_CONST_CORRESPONDING_VAR(NODE) \
GET_DECL_LANG_SPECIFIC (CONST_DECL_CHECK (NODE))
#define SET_DECL_CONST_CORRESPONDING_VAR(NODE, X) \
SET_DECL_LANG_SPECIFIC (CONST_DECL_CHECK (NODE), X)
/* In a FIELD_DECL, points to the FIELD_DECL that was the ultimate
source of the decl. */
#define DECL_ORIGINAL_FIELD(NODE) \
GET_DECL_LANG_SPECIFIC (FIELD_DECL_CHECK (NODE))
#define SET_DECL_ORIGINAL_FIELD(NODE, X) \
SET_DECL_LANG_SPECIFIC (FIELD_DECL_CHECK (NODE), X)
/* In a VAR_DECL, points to the object being renamed if the VAR_DECL is a
renaming pointer, otherwise 0. Note that this object is guaranteed to
be protected against multiple evaluations. */
#define DECL_RENAMED_OBJECT(NODE) \
GET_DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))
#define SET_DECL_RENAMED_OBJECT(NODE, X) \
SET_DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE), X)
/* In a FIELD_DECL corresponding to a discriminant, contains the
discriminant number. */
#define DECL_DISCRIMINANT_NUMBER(NODE) DECL_INITIAL (FIELD_DECL_CHECK (NODE))
/* Define fields and macros for statements.
Start by defining which tree codes are used for statements. */
#define IS_STMT(NODE) (STATEMENT_CLASS_P (NODE))
#define IS_ADA_STMT(NODE) (IS_STMT (NODE) \
&& TREE_CODE (NODE) >= STMT_STMT)
#define STMT_STMT_STMT(NODE) TREE_OPERAND_CHECK_CODE (NODE, STMT_STMT, 0)
#define LOOP_STMT_TOP_COND(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_STMT, 0)
#define LOOP_STMT_BOT_COND(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_STMT, 1)
#define LOOP_STMT_UPDATE(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_STMT, 2)
#define LOOP_STMT_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_STMT, 3)
#define LOOP_STMT_LABEL(NODE) TREE_OPERAND_CHECK_CODE (NODE, LOOP_STMT, 4)
#define EXIT_STMT_COND(NODE) TREE_OPERAND_CHECK_CODE (NODE, EXIT_STMT, 0)
#define EXIT_STMT_LABEL(NODE) TREE_OPERAND_CHECK_CODE (NODE, EXIT_STMT, 1)
#define REGION_STMT_BODY(NODE) TREE_OPERAND_CHECK_CODE (NODE, REGION_STMT, 0)
#define REGION_STMT_HANDLE(NODE) TREE_OPERAND_CHECK_CODE (NODE, REGION_STMT, 1)
#define REGION_STMT_BLOCK(NODE) TREE_OPERAND_CHECK_CODE (NODE, REGION_STMT, 2)
#define HANDLER_STMT_ARG(NODE) TREE_OPERAND_CHECK_CODE (NODE, HANDLER_STMT, 0)
#define HANDLER_STMT_LIST(NODE) TREE_OPERAND_CHECK_CODE (NODE, HANDLER_STMT, 1)
#define HANDLER_STMT_BLOCK(NODE) TREE_OPERAND_CHECK_CODE(NODE, HANDLER_STMT, 2)
|
