/* Front-end tree definitions for GNU compiler.
- Copyright (C) 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+ Copyright (C) 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ 2001, 2002 Free Software Foundation, Inc.
This file is part of GCC.
expression. */
#define IS_EXPR_CODE_CLASS(CLASS) \
- (CLASS == '<' || CLASS == '1' || CLASS == '2' || CLASS == 'e')
+ ((CLASS) == '<' || (CLASS) == '1' || (CLASS) == '2' || (CLASS) == 'e')
/* Number of argument-words in each kind of tree-node. */
{
tree chain;
tree type;
- void *aux;
+
ENUM_BITFIELD(tree_code) code : 8;
+
unsigned side_effects_flag : 1;
unsigned constant_flag : 1;
unsigned addressable_flag : 1;
unsigned readonly_flag : 1;
unsigned unsigned_flag : 1;
unsigned asm_written_flag: 1;
+ unsigned unused_0 : 1;
unsigned used_flag : 1;
unsigned nothrow_flag : 1;
unsigned private_flag : 1;
unsigned protected_flag : 1;
unsigned bounded_flag : 1;
+ unsigned deprecated_flag : 1;
unsigned lang_flag_0 : 1;
unsigned lang_flag_1 : 1;
unsigned lang_flag_4 : 1;
unsigned lang_flag_5 : 1;
unsigned lang_flag_6 : 1;
- /* This flag is presently unused. However, language front-ends
- should not make use of this flag; it is reserved for future
- expansion. */
- unsigned dummy : 1;
+ unsigned unused_1 : 1;
};
/* The following table lists the uses of each of the above flags and
TREE_ADDRESSABLE in
VAR_DECL, FUNCTION_DECL, FIELD_DECL, CONSTRUCTOR, LABEL_DECL,
- ..._TYPE, IDENTIFIER_NODE
+ ..._TYPE, IDENTIFIER_NODE.
+ In a STMT_EXPR, it means we want the result of the enclosed
+ expression.
static_flag:
TREE_VIA_VIRTUAL in
TREE_LIST or TREE_VEC
TREE_CONSTANT_OVERFLOW in
- INTEGER_CST, REAL_CST, COMPLEX_CST
+ INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
TREE_SYMBOL_REFERENCED in
IDENTIFIER_NODE
public_flag:
TREE_OVERFLOW in
- INTEGER_CST, REAL_CST, COMPLEX_CST
+ INTEGER_CST, REAL_CST, COMPLEX_CST, VECTOR_CST
TREE_PUBLIC in
VAR_DECL or FUNCTION_DECL or IDENTIFIER_NODE
TREE_VIA_PUBLIC in
IDENTIFIER_NODE
TYPE_BOUNDED in
..._TYPE
+
+ deprecated_flag:
+
+ TREE_DEPRECATED in
+ ..._DECL
*/
/* Define accessors for the fields that all tree nodes have
Codes are defined in tree.def. */
#define TREE_CODE(NODE) ((enum tree_code) (NODE)->common.code)
#define TREE_SET_CODE(NODE, VALUE) \
-((NODE)->common.code = (ENUM_BITFIELD(tree_code)) (VALUE))
+((NODE)->common.code = (ENUM_BITFIELD (tree_code)) (VALUE))
/* When checking is enabled, errors will be generated if a tree node
is accessed incorrectly. The macros abort with a fatal error. */
#if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
#define TREE_CHECK(t, code) __extension__ \
-({ const tree __t = t; \
+({ const tree __t = (t); \
if (TREE_CODE(__t) != (code)) \
tree_check_failed (__t, code, __FILE__, __LINE__, __FUNCTION__); \
__t; })
#define TREE_CLASS_CHECK(t, class) __extension__ \
-({ const tree __t = t; \
+({ const tree __t = (t); \
if (TREE_CODE_CLASS(TREE_CODE(__t)) != (class)) \
- tree_class_check_failed (__t, class, __FILE__, __LINE__, __FUNCTION__); \
+ tree_class_check_failed (__t, class, __FILE__, __LINE__, \
+ __FUNCTION__); \
__t; })
/* These checks have to be special cased. */
#define CST_OR_CONSTRUCTOR_CHECK(t) __extension__ \
-({ const tree __t = t; \
- enum tree_code __c = TREE_CODE(__t); \
+({ const tree __t = (t); \
+ enum tree_code const __c = TREE_CODE(__t); \
if (__c != CONSTRUCTOR && TREE_CODE_CLASS(__c) != 'c') \
- tree_check_failed (__t, CONSTRUCTOR, __FILE__, __LINE__, __FUNCTION__); \
+ tree_check_failed (__t, CONSTRUCTOR, __FILE__, __LINE__, \
+ __FUNCTION__); \
__t; })
#define EXPR_CHECK(t) __extension__ \
-({ const tree __t = t; \
- char __c = TREE_CODE_CLASS(TREE_CODE(__t)); \
+({ const tree __t = (t); \
+ char const __c = TREE_CODE_CLASS(TREE_CODE(__t)); \
if (__c != 'r' && __c != 's' && __c != '<' \
&& __c != '1' && __c != '2' && __c != 'e') \
- tree_class_check_failed(__t, 'e', __FILE__, __LINE__, __FUNCTION__); \
+ tree_class_check_failed (__t, 'e', __FILE__, __LINE__, \
+ __FUNCTION__); \
__t; })
extern void tree_check_failed PARAMS ((const tree, enum tree_code,
&& TREE_OPERAND (EXP, 0) != error_mark_node \
&& (TYPE_MODE (TREE_TYPE (EXP)) \
== TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
- (EXP) = TREE_OPERAND (EXP, 0);
+ (EXP) = TREE_OPERAND (EXP, 0)
/* Like STRIP_NOPS, but don't let the signedness change either. */
== TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
&& (TREE_UNSIGNED (TREE_TYPE (EXP)) \
== TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \
- (EXP) = TREE_OPERAND (EXP, 0);
+ (EXP) = TREE_OPERAND (EXP, 0)
/* Like STRIP_NOPS, but don't alter the TREE_TYPE either. */
&& TREE_OPERAND (EXP, 0) != error_mark_node \
&& (TREE_TYPE (EXP) \
== TREE_TYPE (TREE_OPERAND (EXP, 0)))) \
- (EXP) = TREE_OPERAND (EXP, 0);
+ (EXP) = TREE_OPERAND (EXP, 0)
/* Nonzero if TYPE represents an integral type. Note that we do not
include COMPLEX types here. */
/* Nonzero if this type is complete or is an array with unspecified bound. */
#define COMPLETE_OR_UNBOUND_ARRAY_TYPE_P(NODE) \
- (COMPLETE_TYPE_P (TREE_CODE (NODE) == ARRAY_TYPE ? TREE_TYPE (NODE) : NODE))
+ (COMPLETE_TYPE_P (TREE_CODE (NODE) == ARRAY_TYPE ? TREE_TYPE (NODE) : (NODE)))
/* Nonzero if TYPE represents a type. */
chain is via a `virtual' declaration. */
#define TREE_VIA_VIRTUAL(NODE) ((NODE)->common.static_flag)
-/* In an INTEGER_CST, REAL_CST, or COMPLEX_CST, this means there was an
- overflow in folding. This is distinct from TREE_OVERFLOW because ANSI C
- requires a diagnostic when overflows occur in constant expressions. */
+/* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST this means
+ there was an overflow in folding. This is distinct from
+ TREE_OVERFLOW because ANSI C requires a diagnostic when overflows
+ occur in constant expressions. */
#define TREE_CONSTANT_OVERFLOW(NODE) ((NODE)->common.static_flag)
/* In an IDENTIFIER_NODE, this means that assemble_name was called with
this string as an argument. */
#define TREE_SYMBOL_REFERENCED(NODE) \
- (IDENTIFIER_NODE_CHECK (NODE)->common.static_flag)
+ (IDENTIFIER_NODE_CHECK (NODE)->common.static_flag)
-/* In an INTEGER_CST, REAL_CST, of COMPLEX_CST, this means there was an
- overflow in folding, and no warning has been issued for this subexpression.
- TREE_OVERFLOW implies TREE_CONSTANT_OVERFLOW, but not vice versa. */
+/* In an INTEGER_CST, REAL_CST, COMPLEX_CST, or VECTOR_CST, this means
+ there was an overflow in folding, and no warning has been issued
+ for this subexpression. TREE_OVERFLOW implies
+ TREE_CONSTANT_OVERFLOW, but not vice versa. */
#define TREE_OVERFLOW(NODE) ((NODE)->common.public_flag)
/* In a VAR_DECL or FUNCTION_DECL,
#define TREE_BOUNDED(NODE) ((NODE)->common.bounded_flag)
+/* Nonzero in a IDENTIFIER_NODE if the use of the name is defined as a
+ deprecated feature by __attribute__((deprecated)). */
+#define TREE_DEPRECATED(NODE) ((NODE)->common.deprecated_flag)
+
/* These flags are available for each language front end to use internally. */
#define TREE_LANG_FLAG_0(NODE) ((NODE)->common.lang_flag_0)
#define TREE_LANG_FLAG_1(NODE) ((NODE)->common.lang_flag_1)
#define TREE_INT_CST_LOW(NODE) (TREE_INT_CST (NODE).low)
#define TREE_INT_CST_HIGH(NODE) (TREE_INT_CST (NODE).high)
-#define INT_CST_LT(A, B) \
- (TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \
- || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \
+#define INT_CST_LT(A, B) \
+ (TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \
+ || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \
&& TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
-#define INT_CST_LT_UNSIGNED(A, B) \
- (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
- < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
- || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
- == (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
+#define INT_CST_LT_UNSIGNED(A, B) \
+ (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
+ < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
+ || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \
+ == (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \
&& TREE_INT_CST_LOW (A) < TREE_INT_CST_LOW (B)))
struct tree_int_cst
} int_cst;
};
-/* In REAL_CST, STRING_CST, COMPLEX_CST nodes, and CONSTRUCTOR nodes,
- and generally in all kinds of constants that could
- be given labels (rather than being immediate). */
+/* In REAL_CST, STRING_CST, COMPLEX_CST, VECTOR_CST nodes, and
+ CONSTRUCTOR nodes, and generally in all kinds of constants that
+ could be given labels (rather than being immediate). */
#define TREE_CST_RTL(NODE) (CST_OR_CONSTRUCTOR_CHECK (NODE)->real_cst.rtl)
struct tree_real_cst
{
struct tree_common common;
- rtx rtl; /* acts as link to register transfer language
- (rtl) info */
+ rtx rtl; /* acts as link to register transfer language (rtl) info */
REAL_VALUE_TYPE real_cst;
};
struct tree_string
{
struct tree_common common;
- rtx rtl; /* acts as link to register transfer language
- (rtl) info */
+ rtx rtl; /* acts as link to register transfer language (rtl) info */
int length;
const char *pointer;
};
struct tree_complex
{
struct tree_common common;
- rtx rtl; /* acts as link to register transfer language
- (rtl) info */
+ rtx rtl; /* acts as link to register transfer language (rtl) info */
tree real;
tree imag;
};
+
+/* In a VECTOR_CST node. */
+#define TREE_VECTOR_CST_ELTS(NODE) (VECTOR_CST_CHECK (NODE)->vector.elements)
+
+struct tree_vector
+{
+ struct tree_common common;
+ rtx rtl;
+ tree elements;
+};
\f
#include "hashtable.h"
#define IDENTIFIER_LENGTH(NODE) \
(IDENTIFIER_NODE_CHECK (NODE)->identifier.id.len)
#define IDENTIFIER_POINTER(NODE) \
- ((char *) IDENTIFIER_NODE_CHECK (NODE)->identifier.id.str)
+ ((const char *) IDENTIFIER_NODE_CHECK (NODE)->identifier.id.str)
/* Translate a hash table identifier pointer to a tree_identifier
pointer, and vice versa. */
/* Define fields and accessors for some nodes that represent expressions. */
/* In a SAVE_EXPR node. */
-#define SAVE_EXPR_CONTEXT(NODE) TREE_OPERAND(SAVE_EXPR_CHECK (NODE), 1)
+#define SAVE_EXPR_CONTEXT(NODE) TREE_OPERAND (SAVE_EXPR_CHECK (NODE), 1)
#define SAVE_EXPR_RTL(NODE) (*(rtx *) &SAVE_EXPR_CHECK (NODE)->exp.operands[2])
#define SAVE_EXPR_NOPLACEHOLDER(NODE) TREE_UNSIGNED (SAVE_EXPR_CHECK (NODE))
/* Nonzero if the SAVE_EXPRs value should be kept, even if it occurs
#define EXPR_WFL_NODE(NODE) \
TREE_OPERAND (EXPR_WITH_FILE_LOCATION_CHECK (NODE), 0)
#define EXPR_WFL_FILENAME_NODE(NODE) \
- TREE_OPERAND(EXPR_WITH_FILE_LOCATION_CHECK (NODE), 1)
+ TREE_OPERAND (EXPR_WITH_FILE_LOCATION_CHECK (NODE), 1)
#define EXPR_WFL_FILENAME(NODE) \
- IDENTIFIER_POINTER (EXPR_WFL_FILENAME_NODE ((NODE)))
+ IDENTIFIER_POINTER (EXPR_WFL_FILENAME_NODE (NODE))
/* ??? Java uses this in all expressions. */
#define EXPR_WFL_LINECOL(NODE) (EXPR_CHECK (NODE)->exp.complexity)
#define EXPR_WFL_LINENO(NODE) (EXPR_WFL_LINECOL (NODE) >> 12)
#define EXPR_WFL_SET_LINECOL(NODE, LINE, COL) \
(EXPR_WFL_LINECOL(NODE) = ((LINE) << 12) | ((COL) & 0xfff))
+/* In a TARGET_EXPR node. */
+#define TARGET_EXPR_SLOT(NODE) TREE_OPERAND (TARGET_EXPR_CHECK (NODE), 0)
+#define TARGET_EXPR_INITIAL(NODE) TREE_OPERAND (TARGET_EXPR_CHECK (NODE), 1)
+#define TARGET_EXPR_CLEANUP(NODE) TREE_OPERAND (TARGET_EXPR_CHECK (NODE), 2)
+
struct tree_exp
{
struct tree_common common;
/* Like DECL_ABSTRACT_ORIGIN, but returns NODE if there's no abstract
origin. This is useful when setting the DECL_ABSTRACT_ORIGIN. */
#define DECL_ORIGIN(NODE) \
- (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : NODE)
+ (DECL_ABSTRACT_ORIGIN (NODE) ? DECL_ABSTRACT_ORIGIN (NODE) : (NODE))
/* 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. */
-#define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != (tree) 0 \
+#define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != NULL_TREE \
&& DECL_ABSTRACT_ORIGIN (NODE) != (NODE))
/* Nonzero if a _DECL means that the name of this decl should be ignored
#define DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT(NODE) \
(FUNCTION_DECL_CHECK (NODE)->decl.no_instrument_function_entry_exit)
-/* Used in FUNCTION_DECLs to indicate that check-memory-usage should be
- disabled in this function. */
-#define DECL_NO_CHECK_MEMORY_USAGE(NODE) \
- (FUNCTION_DECL_CHECK (NODE)->decl.no_check_memory_usage)
-
/* Used in FUNCTION_DECLs to indicate that limit-stack-* should be
disabled in this function. */
#define DECL_NO_LIMIT_STACK(NODE) \
unsigned non_addr_const_p : 1;
unsigned no_instrument_function_entry_exit : 1;
- unsigned no_check_memory_usage : 1;
unsigned comdat_flag : 1;
unsigned malloc_flag : 1;
unsigned no_limit_stack : 1;
ENUM_BITFIELD(built_in_class) built_in_class : 2;
-
unsigned pure_flag : 1;
+
unsigned pointer_depth : 2;
unsigned non_addressable : 1;
unsigned user_align : 1;
unsigned uninlinable : 1;
- /* Two unused bits. */
+ /* Three unused bits. */
unsigned lang_flag_0 : 1;
unsigned lang_flag_1 : 1;
struct tree_common common;
struct tree_int_cst int_cst;
struct tree_real_cst real_cst;
+ struct tree_vector vector;
struct tree_string string;
struct tree_complex complex;
struct tree_identifier identifier;
TI_VOID_LIST_NODE,
+ TI_UV4SF_TYPE,
+ TI_UV4SI_TYPE,
+ TI_UV8HI_TYPE,
+ TI_UV8QI_TYPE,
+ TI_UV4HI_TYPE,
+ TI_UV2SI_TYPE,
+ TI_UV2SF_TYPE,
+ TI_UV16QI_TYPE,
+
TI_V4SF_TYPE,
+ TI_V16SF_TYPE,
TI_V4SI_TYPE,
TI_V8HI_TYPE,
TI_V8QI_TYPE,
#define main_identifier_node global_trees[TI_MAIN_IDENTIFIER]
#define MAIN_NAME_P(NODE) (IDENTIFIER_NODE_CHECK (NODE) == main_identifier_node)
+#define unsigned_V16QI_type_node global_trees[TI_UV16QI_TYPE]
+#define unsigned_V4SI_type_node global_trees[TI_UV4SI_TYPE]
+#define unsigned_V8QI_type_node global_trees[TI_UV8QI_TYPE]
+#define unsigned_V8HI_type_node global_trees[TI_UV8HI_TYPE]
+#define unsigned_V4HI_type_node global_trees[TI_UV4HI_TYPE]
+#define unsigned_V2SI_type_node global_trees[TI_UV2SI_TYPE]
+
#define V16QI_type_node global_trees[TI_V16QI_TYPE]
#define V4SF_type_node global_trees[TI_V4SF_TYPE]
#define V4SI_type_node global_trees[TI_V4SI_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]
+#define V16SF_type_node global_trees[TI_V16SF_TYPE]
/* An enumeration of the standard C integer types. These must be
ordered so that shorter types appear before longer ones. */
/* Construct various types of nodes. */
-#define build_int_2(LO,HI) \
+#define build_int_2(LO, HI) \
build_int_2_wide ((unsigned HOST_WIDE_INT) (LO), (HOST_WIDE_INT) (HI))
extern tree build PARAMS ((enum tree_code, tree, ...));
extern tree build_nt PARAMS ((enum tree_code, ...));
extern tree build_int_2_wide PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT));
+extern tree build_vector PARAMS ((tree, tree));
extern tree build_real PARAMS ((tree, REAL_VALUE_TYPE));
extern tree build_real_from_int_cst PARAMS ((tree, tree));
extern tree build_complex PARAMS ((tree, 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));
+extern bool default_ms_bitfield_layout_p PARAMS ((tree));
/* Split a list of declspecs and attributes into two. */
extern tree merge_dllimport_decl_attributes PARAMS ((tree, tree));
#endif
+/* Return true if DECL will be always resolved to a symbol defined in the
+ same module (shared library or program). */
+#define MODULE_LOCAL_P(DECL) \
+ (lookup_attribute ("visibility", DECL_ATTRIBUTES (DECL)) != NULL)
+
/* Return a version of the TYPE, qualified as indicated by the
TYPE_QUALS, if one exists. If no qualified version exists yet,
return NULL_TREE. */
build_qualified_type instead. */
#define build_type_variant(TYPE, CONST_P, VOLATILE_P) \
- build_qualified_type (TYPE, \
+ build_qualified_type ((TYPE), \
((CONST_P) ? TYPE_QUAL_CONST : 0) \
| ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
/* The alignment of the record so far, allowing for the record to be
padded only at the end, in bits. */
unsigned int unpadded_align;
+ /* The previous field layed out. */
+ tree prev_field;
/* The static variables (i.e., class variables, as opposed to
instance variables) encountered in T. */
tree pending_statics;
extern int fields_length PARAMS ((tree));
+/* Given an initializer INIT, return TRUE if INIT is zero or some
+ aggregate of zeros. Otherwise return FALSE. */
+
+extern bool initializer_zerop PARAMS ((tree));
+
/* integer_zerop (tree x) is nonzero if X is an integer constant of value 0 */
extern int integer_zerop PARAMS ((tree));
extern int in_control_zone_p PARAMS ((void));
extern void expand_fixups PARAMS ((rtx));
-extern tree expand_start_stmt_expr PARAMS ((int));
+extern tree expand_start_stmt_expr PARAMS ((void));
extern tree expand_end_stmt_expr PARAMS ((tree));
extern void expand_expr_stmt PARAMS ((tree));
+extern void expand_expr_stmt_value PARAMS ((tree, int, int));
extern int warn_if_unused_value PARAMS ((tree));
extern void expand_decl_init PARAMS ((tree));
extern void clear_last_expr PARAMS ((void));
extern int expand_continue_loop PARAMS ((struct nesting *));
extern int expand_exit_loop PARAMS ((struct nesting *));
extern int expand_exit_loop_if_false PARAMS ((struct nesting *,
- tree));
+ tree));
+extern int expand_exit_loop_top_cond PARAMS ((struct nesting *,
+ tree));
extern int expand_exit_something PARAMS ((void));
extern void expand_return PARAMS ((tree));
extern tree last_cleanup_this_contour PARAMS ((void));
extern void expand_start_case PARAMS ((int, tree, tree,
const char *));
-extern void expand_end_case PARAMS ((tree));
+extern void expand_end_case_type PARAMS ((tree, tree));
+#define expand_end_case(cond) expand_end_case_type (cond, NULL)
extern int add_case_node PARAMS ((tree, tree,
tree, tree *));
extern int pushcase PARAMS ((tree,
\f
/* The language front-end must define these functions. */
-/* Function to replace the DECL_LANG_SPECIFIC field of a DECL with a copy. */
-extern void copy_lang_decl PARAMS ((tree));
-
/* Function called with no arguments to parse and compile the input. */
extern int yyparse PARAMS ((void));
/* Functions for processing symbol declarations. */
extern int object_permanent_p PARAMS ((tree));
extern int type_precision PARAMS ((tree));
extern int simple_cst_equal PARAMS ((tree, tree));
-extern int compare_tree_int PARAMS ((tree, unsigned int));
+extern int compare_tree_int PARAMS ((tree,
+ unsigned HOST_WIDE_INT));
extern int type_list_equal PARAMS ((tree, tree));
extern int chain_member PARAMS ((tree, tree));
extern int chain_member_purpose PARAMS ((tree, tree));
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