* *
* C Header File *
* *
- * Copyright (C) 1992-2004 Free Software Foundation, Inc. *
+ * 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 2, or (at your option) any later ver- *
+ * 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 distributed with GNAT; see file COPYING. If not, write *
- * to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, *
- * MA 02111-1307, USA. *
+ * 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. *
};
#undef DEFTREECODE
-/* A tree to hold a loop ID. */
-struct tree_loop_id GTY(())
-{
- struct tree_common common;
- struct nesting *loop_id;
-};
-
-/* The language-specific tree. */
+/* Ada uses the lang_decl and lang_type fields to hold a tree. */
union lang_tree_node
- GTY((desc ("TREE_CODE (&%h.generic) == GNAT_LOOP_ID"),
- chain_next ("(union lang_tree_node *)TREE_CHAIN (&%h.generic)")))
-{
- union tree_node GTY ((tag ("0"),
- desc ("tree_node_structure (&%h)")))
- generic;
- struct tree_loop_id GTY ((tag ("1"))) loop_id;
-};
-
-/* Ada uses the lang_decl and lang_type fields to hold more trees. */
-struct lang_decl GTY(())
-{
- union lang_tree_node
- GTY((desc ("TREE_CODE (&%h.generic) == GNAT_LOOP_ID"))) t;
-};
-struct lang_type GTY(())
+ GTY((desc ("0"),
+ chain_next ("(union lang_tree_node *)GENERIC_NEXT (&%h.t)")))
{
- union lang_tree_node
- GTY((desc ("TREE_CODE (&%h.generic) == GNAT_LOOP_ID"))) 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 (NODE)
+#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))
TYPE_LANG_FLAG_1 (FUNCTION_TYPE_CHECK (NODE))
/* For RECORD_TYPE, UNION_TYPE, and QUAL_UNION_TYPE, nonzero if this denotes
- a left-justified modular type (will only be true for RECORD_TYPE). */
-#define TYPE_LEFT_JUSTIFIED_MODULAR_P(NODE) \
- TYPE_LANG_FLAG_1 (REC_OR_UNION_CHECK (NODE))
+ 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. */
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 (REC_OR_UNION_CHECK (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_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)
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_SPECIFIC (FUNCTION_TYPE_CHECK (NODE))->t.generic)
-#define SET_TYPE_CI_CO_LIST(NODE, X) \
- (TYPE_LANG_SPECIFIC (FUNCTION_TYPE_CHECK (NODE)) = (struct lang_type *)(X))
+#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) \
- (&TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE))->t.generic)
+#define TYPE_MODULUS(NODE) GET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE))
#define SET_TYPE_MODULUS(NODE, X) \
- (TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE)) = (struct lang_type *)(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) \
- (&TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE))->t.generic)
-#define SET_TYPE_INDEX_TYPE(NODE, X) \
- (TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE)) = (struct lang_type *) (X))
+#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) \
- (&TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE))->t.generic)
+ GET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE))
#define SET_TYPE_DIGITS_VALUE(NODE, X) \
- (TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE)) = (struct lang_type *) (X))
+ SET_TYPE_LANG_SPECIFIC (INTEGER_TYPE_CHECK (NODE), X)
-/* For INTEGER_TYPE, stores the RM_Size of the type. */
-#define TYPE_RM_SIZE_INT(NODE) (INTEGER_TYPE_CHECK (NODE)->type.values)
-
-/* Likewise for ENUMERAL_TYPE. */
-#define TYPE_RM_SIZE_ENUM(NODE) \
- (&TYPE_LANG_SPECIFIC (ENUMERAL_TYPE_CHECK (NODE))->t.generic)
-#define SET_TYPE_RM_SIZE_ENUM(NODE, X) \
- (TYPE_LANG_SPECIFIC (ENUMERAL_TYPE_CHECK (NODE)) = (struct lang_type *)(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) \
- (TREE_CODE (NODE) == ENUMERAL_TYPE ? TYPE_RM_SIZE_ENUM (NODE) \
- : TREE_CODE (NODE) == INTEGER_TYPE ? TYPE_RM_SIZE_INT (NODE) \
- : 0)
+ (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) \
- (&TYPE_LANG_SPECIFIC (RECORD_TYPE_CHECK (NODE))->t.generic)
+ GET_TYPE_LANG_SPECIFIC (RECORD_TYPE_CHECK (NODE))
#define SET_TYPE_UNCONSTRAINED_ARRAY(NODE, X) \
- (TYPE_LANG_SPECIFIC (RECORD_TYPE_CHECK (NODE)) = (struct lang_type *)(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) (&TYPE_LANG_SPECIFIC (NODE)->t.generic)
+#define TYPE_ADA_SIZE(NODE) \
+ GET_TYPE_LANG_SPECIFIC (RECORD_OR_UNION_CHECK (NODE))
#define SET_TYPE_ADA_SIZE(NODE, X) \
- (TYPE_LANG_SPECIFIC (NODE) = (struct lang_type *)(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) (&TYPE_LANG_SPECIFIC (NODE)->t.generic)
+#define TYPE_ACTUAL_BOUNDS(NODE) \
+ GET_TYPE_LANG_SPECIFIC (TREE_CHECK2 (NODE, INTEGER_TYPE, ARRAY_TYPE))
#define SET_TYPE_ACTUAL_BOUNDS(NODE, X) \
- (TYPE_LANG_SPECIFIC (NODE) = (struct lang_type *)(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.
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 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) \
- (&DECL_LANG_SPECIFIC (CONST_DECL_CHECK (NODE))->t.generic)
+ GET_DECL_LANG_SPECIFIC (CONST_DECL_CHECK (NODE))
#define SET_DECL_CONST_CORRESPONDING_VAR(NODE, X) \
- (DECL_LANG_SPECIFIC (CONST_DECL_CHECK (NODE)) = (struct lang_decl *)(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) \
- (&DECL_LANG_SPECIFIC (FIELD_DECL_CHECK (NODE))->t.generic)
+ GET_DECL_LANG_SPECIFIC (FIELD_DECL_CHECK (NODE))
#define SET_DECL_ORIGINAL_FIELD(NODE, X) \
- (DECL_LANG_SPECIFIC (FIELD_DECL_CHECK (NODE)) = (struct lang_decl *)(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))
-/* This is the loop id for a GNAT_LOOP_ID node. */
-#define TREE_LOOP_ID(NODE) \
- ((union lang_tree_node *) GNAT_LOOP_ID_CHECK (NODE))->loop_id.loop_id
-
/* Define fields and macros for statements.
Start by defining which tree codes are used for statements. */
-#define IS_STMT(NODE) (TREE_CODE_CLASS (TREE_CODE (NODE)) == 's')
-
-/* We store the Sloc in statement nodes. */
-#define TREE_SLOC(NODE) TREE_COMPLEXITY (STMT_CHECK (NODE))
-
-#define EXPR_STMT_EXPR(NODE) TREE_OPERAND_CHECK_CODE (NODE, EXPR_STMT, 0)
-#define BLOCK_STMT_LIST(NODE) TREE_OPERAND_CHECK_CODE (NODE, BLOCK_STMT, 0)
-#define IF_STMT_COND(NODE) TREE_OPERAND_CHECK_CODE (NODE, IF_STMT, 0)
-#define IF_STMT_TRUE(NODE) TREE_OPERAND_CHECK_CODE (NODE, IF_STMT, 1)
-#define IF_STMT_ELSEIF(NODE) TREE_OPERAND_CHECK_CODE (NODE, IF_STMT, 2)
-#define IF_STMT_ELSE(NODE) TREE_OPERAND_CHECK_CODE (NODE, IF_STMT, 3)
-#define GOTO_STMT_LABEL(NODE) TREE_OPERAND_CHECK_CODE (NODE, GOTO_STMT, 0)
-#define LABEL_STMT_LABEL(NODE) TREE_OPERAND_CHECK_CODE (NODE, LABEL_STMT, 0)
-#define LABEL_STMT_FIRST_IN_EH(NODE) \
- (LABEL_STMT_CHECK (NODE)->common.unsigned_flag)
-#define RETURN_STMT_EXPR(NODE) TREE_OPERAND_CHECK_CODE (NODE, RETURN_STMT, 0)
-
+#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)
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