diff options
Diffstat (limited to 'gcc-4.3.1/gcc/ada/ada-tree.h')
| -rw-r--r-- | gcc-4.3.1/gcc/ada/ada-tree.h | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/gcc-4.3.1/gcc/ada/ada-tree.h b/gcc-4.3.1/gcc/ada/ada-tree.h new file mode 100644 index 000000000..27f9ef6ab --- /dev/null +++ b/gcc-4.3.1/gcc/ada/ada-tree.h @@ -0,0 +1,323 @@ +/**************************************************************************** + * * + * GNAT COMPILER COMPONENTS * + * * + * A D A - T R E E * + * * + * C Header File * + * * + * Copyright (C) 1992-2007, 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 3, 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 along with GCC; see the file COPYING3. If not see * + * <http://www.gnu.org/licenses/>. * + * * + * 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 *)GENERIC_NEXT (&%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 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 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 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)) + +/* True if TYPE can alias any other types. */ +#define TYPE_UNIVERSAL_ALIASING_P(NODE) TYPE_LANG_FLAG_6 (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 FUNCTION_DECL, points to the stub associated with the function + if any, otherwise 0. */ +#define DECL_FUNCTION_STUB(NODE) \ + GET_DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (NODE)) +#define SET_DECL_FUNCTION_STUB(NODE, X) \ + SET_DECL_LANG_SPECIFIC (FUNCTION_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) |