/* Front-end tree definitions for GNU compiler.
- Copyright (C) 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
+ Copyright (C) 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+GCC is distributed in the hope that it will be useful, but WITHOUT 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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
#include "machmode.h"
#include "version.h"
{
#include "builtins.def"
- /* Upper bound on non-language-specific builtins. */
+ /* Upper bound on non-language-specific builtins. */
END_BUILTINS
};
#undef DEF_BUILTIN
so all nodes have these fields.
See the accessor macros, defined below, for documentation of the
- fields. */
+ fields. */
struct tree_common
{
In VECTOR_TYPE nodes, this is the type of the elements. */
#define TREE_TYPE(NODE) ((NODE)->common.type)
+/* Here is how primitive or already-canonicalized types' hash codes
+ are made. */
+#define TYPE_HASH(TYPE) ((size_t) (TYPE) & 0777777)
+
/* Nodes are chained together for many purposes.
Types are chained together to record them for being output to the debugger
(see the function `chain_type').
|| (TREE_CODE (TYPE) == COMPLEX_TYPE \
&& TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE))
-/* Nonzero if TYPE represents an aggregate (multi-component) type. */
+/* Nonzero if TYPE represents an aggregate (multi-component) type. */
#define AGGREGATE_TYPE_P(TYPE) \
(TREE_CODE (TYPE) == ARRAY_TYPE || TREE_CODE (TYPE) == RECORD_TYPE \
when the node is a type). */
#define TREE_READONLY(NODE) ((NODE)->common.readonly_flag)
+/* Non-zero if NODE is a _DECL with TREE_READONLY set. */
+#define TREE_READONLY_DECL_P(NODE) \
+ (TREE_READONLY (NODE) && DECL_P (NODE))
+
/* Value of expression is constant.
Always appears in all ..._CST nodes.
May also appear in an arithmetic expression, an ADDR_EXPR or a CONSTRUCTOR
#define TYPE_NAME(NODE) (TYPE_CHECK (NODE)->type.name)
#define TYPE_NEXT_VARIANT(NODE) (TYPE_CHECK (NODE)->type.next_variant)
#define TYPE_MAIN_VARIANT(NODE) (TYPE_CHECK (NODE)->type.main_variant)
-#define TYPE_NONCOPIED_PARTS(NODE) (TYPE_CHECK (NODE)->type.noncopied_parts)
#define TYPE_CONTEXT(NODE) (TYPE_CHECK (NODE)->type.context)
#define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific)
type node. You then set the TYPE_STUB_DECL field of the type node
to point back at the TYPE_DECL node. This allows the debug routines
to know that the two nodes represent the same type, so that we only
- get one debug info record for them. */
+ get one debug info record for them. */
#define TYPE_STUB_DECL(NODE) (TREE_CHAIN (NODE))
/* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type
/* If set in an ARRAY_TYPE, indicates a string type (for languages
that distinguish string from array of char).
- If set in a SET_TYPE, indicates a bitstring type. */
+ If set in a SET_TYPE, indicates a bitstring type. */
#define TYPE_STRING_FLAG(NODE) (TYPE_CHECK (NODE)->type.string_flag)
-/* If non-NULL, this is a upper bound of the size (in bytes) of an
- object of the given ARRAY_TYPE. This allows temporaries to be allocated. */
+/* If non-NULL, this is an upper bound of the size (in bytes) of an
+ object of the given ARRAY_TYPE. This allows temporaries to be allocated. */
#define TYPE_ARRAY_MAX_SIZE(ARRAY_TYPE) TYPE_MAX_VALUE (ARRAY_TYPE)
/* For a VECTOR_TYPE, this is the number of sub-parts of the vector. */
tree next_variant;
tree main_variant;
tree binfo;
- tree noncopied_parts;
tree context;
HOST_WIDE_INT alias_set;
/* Points to a structure whose details depend on the language in use. */
type, or NULL_TREE if the given decl has "file scope". */
#define DECL_CONTEXT(NODE) (DECL_CHECK (NODE)->decl.context)
#define DECL_FIELD_CONTEXT(NODE) (FIELD_DECL_CHECK (NODE)->decl.context)
-/* In a DECL this is the field where configuration dependent machine
- attributes are store */
-#define DECL_MACHINE_ATTRIBUTES(NODE) (DECL_CHECK (NODE)->decl.machine_attributes)
+/* In a DECL this is the field where attributes are stored. */
+#define DECL_ATTRIBUTES(NODE) (DECL_CHECK (NODE)->decl.attributes)
/* In a FIELD_DECL, this is the field position, counting in bytes, of the
byte containing the bit closest to the beginning of the structure. */
#define DECL_FIELD_OFFSET(NODE) (FIELD_DECL_CHECK (NODE)->decl.arguments)
/* Nonzero for any sort of ..._DECL node means this decl node represents an
inline instance of some original (abstract) decl from an inline function;
suppress any warnings about shadowing some other variable. FUNCTION_DECL
- nodes can also have their abstract origin set to themselves. */
+ nodes can also have their abstract origin set to themselves. */
#define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != (tree) 0 \
&& DECL_ABSTRACT_ORIGIN (NODE) != (NODE))
#define DECL_EXTERNAL(NODE) (DECL_CHECK (NODE)->decl.external_flag)
/* In a VAR_DECL for a RECORD_TYPE, sets number for non-init_priority
- initializatons. */
+ initializatons. */
#define DEFAULT_INIT_PRIORITY 65535
#define MAX_INIT_PRIORITY 65535
#define MAX_RESERVED_INIT_PRIORITY 100
/* In a TYPE_DECL
nonzero means the detail info about this type is not dumped into stabs.
Instead it will generate cross reference ('x') of names.
- This uses the same flag as DECL_EXTERNAL. */
+ This uses the same flag as DECL_EXTERNAL. */
#define TYPE_DECL_SUPPRESS_DEBUG(NODE) \
(TYPE_DECL_CHECK (NODE)->decl.external_flag)
/* In a FUNCTION_DECL, nonzero if the function cannot be inlined. */
#define DECL_UNINLINABLE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.uninlinable)
+/* In a FUNCTION_DECL, the saved representation of the body of the
+ entire function. Usually a COMPOUND_STMT, but in C++ this may also
+ be a RETURN_INIT, CTOR_INITIALIZER, or TRY_BLOCK. */
+#define DECL_SAVED_TREE(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.saved_tree)
+
+/* List of FUNCION_DECLs inlined into this function's body. */
+#define DECL_INLINED_FNS(NODE) (FUNCTION_DECL_CHECK (NODE)->decl.inlined_fns)
+
/* Nonzero in a FUNCTION_DECL means this is a built-in function
that is not specified by ansi C and that users are supposed to be allowed
to redefine for any purpose whatever. */
argument's depth. */
#define DECL_POINTER_DEPTH(DECL) (DECL_CHECK (DECL)->decl.pointer_depth)
+struct function;
+
struct tree_decl
{
struct tree_common common;
tree abstract_origin;
tree assembler_name;
tree section_name;
- tree machine_attributes;
+ tree attributes;
rtx rtl; /* RTL representation for object. */
rtx live_range_rtl;
int i;
} u2;
+ /* In a FUNCTION_DECL, this is DECL_SAVED_TREE. */
+ tree saved_tree;
+
+ /* In a FUNCTION_DECL, these are function data which is to be kept
+ as long as FUNCTION_DECL is kept. */
+ tree inlined_fns;
+
tree vindex;
HOST_WIDE_INT pointer_alias_set;
/* Points to a structure whose details depend on the language in use. */
TI_V8QI_TYPE,
TI_V4HI_TYPE,
TI_V2SI_TYPE,
+ TI_V2SF_TYPE,
TI_MAIN_IDENTIFIER,
#define V8QI_type_node global_trees[TI_V8QI_TYPE]
#define V4HI_type_node global_trees[TI_V4HI_TYPE]
#define V2SI_type_node global_trees[TI_V2SI_TYPE]
+#define V2SF_type_node global_trees[TI_V2SF_TYPE]
/* An enumeration of the standard C integer types. These must be
ordered so that shorter types appear before longer ones. */
extern tree get_identifier PARAMS ((const char *));
+/* Identical to get_identifier, except that the length is assumed
+ known. */
+
+extern tree get_identifier_with_length PARAMS ((const char *, unsigned int));
+
/* If an identifier with the name TEXT (a null-terminated string) has
previously been referred to, return that node; otherwise return
NULL_TREE. */
is ATTRIBUTE.
Such modified types already made are recorded so that duplicates
- are not made. */
+ are not made. */
extern tree build_type_attribute_variant PARAMS ((tree, tree));
extern tree build_decl_attribute_variant PARAMS ((tree, tree));
+/* Structure describing an attribute and a function to handle it. */
+struct attribute_spec
+{
+ /* The name of the attribute (without any leading or trailing __),
+ or NULL to mark the end of a table of attributes. */
+ const char *const name;
+ /* The minimum length of the list of arguments of the attribute. */
+ const int min_length;
+ /* The maximum length of the list of arguments of the attribute
+ (-1 for no maximum). */
+ const int max_length;
+ /* Whether this attribute requires a DECL. If it does, it will be passed
+ from types of DECLs, function return types and array element types to
+ the DECLs, function types and array types respectively; but when
+ applied to a type in any other circumstances, it will be ignored with
+ a warning. (If greater control is desired for a given attribute,
+ this should be false, and the flags argument to the handler may be
+ used to gain greater control in that case.) */
+ const bool decl_required;
+ /* Whether this attribute requires a type. If it does, it will be passed
+ from a DECL to the type of that DECL. */
+ const bool type_required;
+ /* Whether this attribute requires a function (or method) type. If it does,
+ it will be passed from a function pointer type to the target type,
+ and from a function return type (which is not itself a function
+ pointer type) to the function type. */
+ const bool function_type_required;
+ /* Function to handle this attribute. NODE points to the node to which
+ the attribute is to be applied. If a DECL, it should be modified in
+ place; if a TYPE, a copy should be created. NAME is the name of the
+ attribute (possibly with leading or trailing __). ARGS is the TREE_LIST
+ of the arguments (which may be NULL). FLAGS gives further information
+ about the context of the attribute. Afterwards, the attributes will
+ be added to the DECL_ATTRIBUTES or TYPE_ATTRIBUTES, as appropriate,
+ unless *NO_ADD_ATTRS is set to true (which should be done on error,
+ as well as in any other cases when the attributes should not be added
+ to the DECL or TYPE). Depending on FLAGS, any attributes to be
+ applied to another type or DECL later may be returned;
+ otherwise the return value should be NULL_TREE. This pointer may be
+ NULL if no special handling is required beyond the checks implied
+ by the rest of this structure. */
+ tree (*const handler) PARAMS ((tree *node, tree name, tree args,
+ int flags, bool *no_add_attrs));
+};
+
+extern const struct attribute_spec default_target_attribute_table[];
+
+/* Flags that may be passed in the third argument of decl_attributes, and
+ to handler functions for attributes. */
+enum attribute_flags
+{
+ /* The type passed in is the type of a DECL, and any attributes that
+ should be passed in again to be applied to the DECL rather than the
+ type should be returned. */
+ ATTR_FLAG_DECL_NEXT = 1,
+ /* The type passed in is a function return type, and any attributes that
+ should be passed in again to be applied to the function type rather
+ than the return type should be returned. */
+ ATTR_FLAG_FUNCTION_NEXT = 2,
+ /* The type passed in is an array element type, and any attributes that
+ should be passed in again to be applied to the array type rather
+ than the element type should be returned. */
+ ATTR_FLAG_ARRAY_NEXT = 4,
+ /* The type passed in is a structure, union or enumeration type being
+ created, and should be modified in place. */
+ ATTR_FLAG_TYPE_IN_PLACE = 8,
+ /* The attributes are being applied by default to a library function whose
+ name indicates known behavior, and should be silently ignored if they
+ are not in fact compatible with the function type. */
+ ATTR_FLAG_BUILT_IN = 16
+};
+
/* Default versions of target-overridable functions. */
extern tree merge_decl_attributes PARAMS ((tree, tree));
extern tree merge_type_attributes PARAMS ((tree, tree));
-extern int default_valid_attribute_p PARAMS ((tree, tree, tree, tree));
extern int default_comp_type_attributes PARAMS ((tree, tree));
extern void default_set_default_type_attributes PARAMS ((tree));
extern void default_insert_attributes PARAMS ((tree, tree *));
+extern bool default_function_attribute_inlinable_p PARAMS ((tree));
/* Split a list of declspecs and attributes into two. */
enum size_type_kind
{
- SIZETYPE, /* Normal representation of sizes in bytes. */
- SSIZETYPE, /* Signed representation of sizes in bytes. */
+ SIZETYPE, /* Normal representation of sizes in bytes. */
+ SSIZETYPE, /* Signed representation of sizes in bytes. */
USIZETYPE, /* Unsigned representation of sizes in bytes. */
BITSIZETYPE, /* Normal representation of sizes in bits. */
SBITSIZETYPE, /* Signed representation of sizes in bits. */
+ (BITS_PER_UNIT > 8) + (BITS_PER_UNIT > 16) + (BITS_PER_UNIT > 32) \
+ (BITS_PER_UNIT > 64) + (BITS_PER_UNIT > 128) + (BITS_PER_UNIT > 256))
-/* If nonzero, an upper limit on alignment of structure fields, in bits. */
+/* If nonzero, an upper limit on alignment of structure fields, in bits. */
extern unsigned int maximum_field_alignment;
-/* If non-zero, the alignment of a bitstring or (power-)set value, in bits. */
+/* If non-zero, the alignment of a bitstring or (power-)set value, in bits. */
extern unsigned int set_alignment;
/* Concatenate two lists (chains of TREE_LIST nodes) X and Y
extern int immediate_size_expand;
-/* Points to the FUNCTION_DECL of the function whose body we are reading. */
+/* Points to the FUNCTION_DECL of the function whose body we are reading. */
extern tree current_function_decl;
/* Function of no arguments for initializing the symbol table. */
extern void init_decl_processing PARAMS ((void));
-/* Function to identify which front-end produced the output file. */
+/* Function to identify which front-end produced the output file. */
extern const char *lang_identify PARAMS ((void));
/* Function to replace the DECL_LANG_SPECIFIC field of a DECL with a copy. */
extern void pop_function_context PARAMS ((void));
extern void push_function_context_to PARAMS ((tree));
extern void pop_function_context_from PARAMS ((tree));
+extern void ggc_mark_struct_function PARAMS ((struct function *));
/* In print-rtl.c */
#ifdef BUFSIZ
extern int setjmp_call_p PARAMS ((tree));
+/* In attribs.c. */
+
+/* Process the attributes listed in ATTRIBUTES and install them in *NODE,
+ which is either a DECL (including a TYPE_DECL) or a TYPE. If a DECL,
+ it should be modified in place; if a TYPE, a copy should be created
+ unless ATTR_FLAG_TYPE_IN_PLACE is set in FLAGS. FLAGS gives further
+ information, in the form of a bitwise OR of flags in enum attribute_flags
+ from tree.h. Depending on these flags, some attributes may be
+ returned to be applied at a later stage (for example, to apply
+ a decl attribute to the declaration rather than to its type). */
+extern tree decl_attributes PARAMS ((tree *, tree, int));
+
+/* The following function must be provided by front ends
+ using attribs.c. */
+
+/* Possibly apply default attributes to a function (represented by
+ a FUNCTION_DECL). */
+extern void insert_default_attributes PARAMS ((tree));
+
+/* Table of machine-independent attributes for checking formats, if used. */
+extern const struct attribute_spec *format_attribute_table;
+
+/* Table of machine-independent attributes for a particular language. */
+extern const struct attribute_spec *lang_attribute_table;
+
+/* Flag saying whether common language attributes are to be supported. */
+extern int lang_attribute_common;
+
/* In front end. */
extern int mark_addressable PARAMS ((tree));
extern void dwarf2out_return_reg PARAMS ((const char *, unsigned));
+/* The type of a function that walks over tree structure. */
+
+typedef tree (*walk_tree_fn) PARAMS ((tree *, int *, void *));
+
\f
/* Redefine abort to report an internal error w/o coredump, and
reporting the location of the error in the source file. This logic
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