ENUM_BITFIELD(tree_code) code : 8;
unsigned side_effects_flag : 1;
unsigned constant_flag : 1;
- unsigned permanent_flag : 1;
unsigned addressable_flag : 1;
unsigned volatile_flag : 1;
unsigned readonly_flag : 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;
};
/* The following table lists the uses of each of the above flags and
TREE_CONSTANT in
all expressions
- permanent_flag: TREE_PERMANENT in all nodes
-
unsigned_flag:
TREE_UNSIGNED in
if the value is constant. */
#define TREE_CONSTANT(NODE) ((NODE)->common.constant_flag)
-/* Nonzero means permanent node;
- node will continue to exist for the entire compiler run.
- Otherwise it will be recycled at the end of the function.
- This flag is always zero if garbage collection is in use.
- Try not to use this. Only set it with TREE_SET_PERMANENT. */
-#define TREE_PERMANENT(NODE) ((NODE)->common.permanent_flag)
-#define TREE_SET_PERMANENT(NODE) do { \
- if (!ggc_p && current_obstack == &permanent_obstack) \
- TREE_PERMANENT(NODE) = 1; \
-} while (0)
-
/* In INTEGER_TYPE or ENUMERAL_TYPE nodes, means an unsigned type.
In FIELD_DECL nodes, means an unsigned bit field.
The same bit is used in functions as DECL_BUILT_IN_NONANSI. */
#define TREE_UNSIGNED(NODE) ((NODE)->common.unsigned_flag)
+#define TYPE_TRAP_SIGNED(NODE) (flag_trapv && ! TREE_UNSIGNED (NODE))
+
/* Nonzero in a VAR_DECL means assembler code has been written.
Nonzero in a FUNCTION_DECL means that the function has been compiled.
This is interesting in an inline function, since it might not need
struct rtx_def *rtl; /* acts as link to register transfer language
(rtl) info */
int length;
- char *pointer;
+ const char *pointer;
};
/* In a COMPLEX_CST node. */
#define RTL_EXPR_SEQUENCE(NODE) (*(struct rtx_def **) &EXPR_CHECK (NODE)->exp.operands[0])
#define RTL_EXPR_RTL(NODE) (*(struct rtx_def **) &EXPR_CHECK (NODE)->exp.operands[1])
-/* In a CALL_EXPR node. */
-#define CALL_EXPR_RTL(NODE) (*(struct rtx_def **) &EXPR_CHECK (NODE)->exp.operands[2])
-
/* In a CONSTRUCTOR node. */
#define CONSTRUCTOR_ELTS(NODE) TREE_OPERAND (NODE, 1)
#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_OBSTACK(NODE) (TYPE_CHECK (NODE)->type.obstack)
#define TYPE_LANG_SPECIFIC(NODE) (TYPE_CHECK (NODE)->type.lang_specific)
/* For a VECTOR_TYPE node, this describes a different type which is emitted
its size. */
#define TYPE_NO_FORCE_BLK(NODE) (TYPE_CHECK (NODE)->type.no_force_blk_flag)
-/* In an INTEGER_TYPE, it means the type represents a size. We use this
- both for validity checking and to permit optimziations that are unsafe
- for other types. */
+/* In an INTEGER_TYPE, it means the type represents a size. We use
+ this both for validity checking and to permit optimizations that
+ are unsafe for other types. Note that the C `size_t' type should
+ *not* have this flag set. The `size_t' type is simply a typedef
+ for an ordinary integer type that happens to be the type of an
+ expression returned by `sizeof'; `size_t' has no special
+ properties. Expressions whose type have TYPE_IS_SIZETYPE set are
+ always actual sizes. */
#define TYPE_IS_SIZETYPE(NODE) \
(INTEGER_TYPE_CHECK (NODE)->type.no_force_blk_flag)
union tree_node *binfo;
union tree_node *noncopied_parts;
union tree_node *context;
- struct obstack *obstack;
HOST_WIDE_INT alias_set;
/* Points to a structure whose details depend on the language in use. */
struct lang_type *lang_specific;
#define DECL_SIZE(NODE) (DECL_CHECK (NODE)->decl.size)
/* Likewise for the size in bytes. */
#define DECL_SIZE_UNIT(NODE) (DECL_CHECK (NODE)->decl.size_unit)
-/* Holds the alignment required for the datum. */
+/* Holds the alignment required for the datum, in bits. */
#define DECL_ALIGN(NODE) (DECL_CHECK (NODE)->decl.u1.a.align)
+/* The alignment of NODE, in bytes. */
+#define DECL_ALIGN_UNIT(NODE) (DECL_ALIGN (NODE) / BITS_PER_UNIT)
/* For FIELD_DECLs, off_align holds the number of low-order bits of
DECL_FIELD_OFFSET which are known to be always zero.
DECL_OFFSET_ALIGN thus returns the alignment that DECL_FIELD_OFFSET
TI_INTEGER_ZERO,
TI_INTEGER_ONE,
+ TI_INTEGER_MINUS_ONE,
TI_NULL_POINTER,
TI_SIZE_ZERO,
TI_PTRDIFF_TYPE,
TI_VA_LIST_TYPE,
+ TI_VOID_LIST_NODE,
+
TI_V4SF_TYPE,
TI_V4SI_TYPE,
TI_V8QI_TYPE,
#define integer_zero_node global_trees[TI_INTEGER_ZERO]
#define integer_one_node global_trees[TI_INTEGER_ONE]
+#define integer_minus_one_node global_trees[TI_INTEGER_MINUS_ONE]
#define size_zero_node global_trees[TI_SIZE_ZERO]
#define size_one_node global_trees[TI_SIZE_ONE]
#define bitsize_zero_node global_trees[TI_BITSIZE_ZERO]
#define ptrdiff_type_node global_trees[TI_PTRDIFF_TYPE]
#define va_list_type_node global_trees[TI_VA_LIST_TYPE]
+/* The node that should be placed at the end of a parameter list to
+ indicate that the function does not take a variable number of
+ arguments. The TREE_VALUE will be void_type_node and there will be
+ no TREE_CHAIN. Language-independent code should not assume
+ anything else about this node. */
+#define void_list_node global_trees[TI_VOID_LIST_NODE]
+
#define main_identifier_node global_trees[TI_MAIN_IDENTIFIER]
#define MAIN_NAME_P(NODE) (IDENTIFIER_NODE_CHECK (NODE) == main_identifier_node)
extern int exact_log2_wide PARAMS ((unsigned HOST_WIDE_INT));
extern int floor_log2_wide PARAMS ((unsigned HOST_WIDE_INT));
-extern char *oballoc PARAMS ((int));
+/* Approximate positive square root of a host double. This is for
+ statistical reports, not code generation. */
+extern double approx_sqrt PARAMS ((double));
+
extern char *permalloc PARAMS ((int));
-extern char *savealloc PARAMS ((int));
extern char *expralloc PARAMS ((int));
/* Compute the number of bytes occupied by 'node'. This routine only
extern tree build PARAMS ((enum tree_code, tree, ...));
extern tree build_nt PARAMS ((enum tree_code, ...));
-extern tree build_parse_node PARAMS ((enum tree_code, ...));
extern tree build_int_2_wide PARAMS ((unsigned HOST_WIDE_INT, HOST_WIDE_INT));
extern tree build_real PARAMS ((tree, REAL_VALUE_TYPE));
extern tree build_string PARAMS ((int, const char *));
extern tree build1 PARAMS ((enum tree_code, tree, tree));
extern tree build_tree_list PARAMS ((tree, tree));
-extern tree build_decl_list PARAMS ((tree, tree));
-extern tree build_expr_list PARAMS ((tree, tree));
extern tree build_decl PARAMS ((enum tree_code, tree, tree));
extern tree build_block PARAMS ((tree, tree, tree, tree, tree));
extern tree build_expr_wfl PARAMS ((tree, const char *, int, int));
extern void fixup_unsigned_type PARAMS ((tree));
extern tree build_pointer_type PARAMS ((tree));
extern tree build_reference_type PARAMS ((tree));
+extern tree build_type_no_quals PARAMS ((tree));
extern tree build_index_type PARAMS ((tree));
extern tree build_index_2_type PARAMS ((tree, tree));
extern tree build_array_type PARAMS ((tree, tree));
/* Make a new TREE_LIST node from specified PURPOSE, VALUE and CHAIN. */
extern tree tree_cons PARAMS ((tree, tree, tree));
-extern tree perm_tree_cons PARAMS ((tree, tree, tree));
-extern tree temp_tree_cons PARAMS ((tree, tree, tree));
-extern tree saveable_tree_cons PARAMS ((tree, tree, tree));
-extern tree decl_tree_cons PARAMS ((tree, tree, tree));
-extern tree expr_tree_cons PARAMS ((tree, tree, tree));
/* Return the last tree node in a chain. */
/* Return 0 if it is safe to evaluate EXPR multiple times,
return 1 if it is safe if EXPR is unsaved afterward, or
return 2 if it is completely unsafe. */
-extern int unsafe_for_reeval PARAMS ((tree));
+extern int unsafe_for_reeval PARAMS ((tree));
+
+/* If non-null, these are language-specific helper functions for
+ unsafe_for_reeval. Return negative to not handle some tree. */
+extern int (*lang_unsafe_for_reeval) PARAMS ((tree));
/* Return 1 if EXP contains a PLACEHOLDER_EXPR; i.e., if it represents a size
or offset that depends on a field within a record.
extern tree builtin_function PARAMS ((const char *, tree, int,
enum built_in_class,
const char *));
-/* Pointer to function to check the format of printf, etc. This is
- used by the backend, e.g. builtins.c. */
-extern void (*check_function_format_ptr) PARAMS ((int *, tree, tree, tree));
\f
/* In tree.c */
extern char *perm_calloc PARAMS ((int, long));
extern void expand_start_elseif PARAMS ((tree));
extern struct nesting *expand_start_loop PARAMS ((int));
extern struct nesting *expand_start_loop_continue_elsewhere PARAMS ((int));
+extern struct nesting *expand_start_null_loop PARAMS ((void));
extern void expand_loop_continue_here PARAMS ((void));
extern void expand_end_loop PARAMS ((void));
+extern void expand_end_null_loop 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 *,
change. Required by any language that supports variadic arguments. */
extern tree (*lang_type_promotes_to) PARAMS ((tree));
+extern tree fold_builtin PARAMS ((tree));
\f
/* The language front-end must define these functions. */
-/* Function of no arguments for initializing options. */
-extern void lang_init_options PARAMS ((void));
-
/* Function of no arguments for initializing lexical scanning. */
extern void init_lex PARAMS ((void));
/* Function of no arguments for initializing the symbol table. */
extern void init_decl_processing PARAMS ((void));
-/* Functions called with no arguments at the beginning and end or processing
- the input source file. */
-extern void lang_init PARAMS ((void));
-extern void lang_finish PARAMS ((void));
-
/* Function to identify which front-end produced the output file. */
extern const char *lang_identify PARAMS ((void));
/* Function called with no arguments to parse and compile the input. */
extern int yyparse PARAMS ((void));
-/* Function called with option as argument
- to decode options starting with -f or -W or +.
- It should return nonzero if it handles the option. */
-extern int lang_decode_option PARAMS ((int, char **));
-
/* Functions for processing symbol declarations. */
/* Function to enter a new lexical scope.
Takes one argument: always zero when called from outside the front end. */
extern tree build_range_type PARAMS ((tree, tree, tree));
-/* Call when starting to parse a declaration:
- make expressions in the declaration last the length of the function.
- Returns an argument that should be passed to resume_momentary later. */
-extern int suspend_momentary PARAMS ((void));
-
-extern int allocation_temporary_p PARAMS ((void));
-
-/* Call when finished parsing a declaration:
- restore the treatment of node-allocation that was
- in effect before the suspension.
- YES should be the value previously returned by suspend_momentary. */
-extern void resume_momentary PARAMS ((int));
-
/* Called after finishing a record, union or enumeral type. */
extern void rest_of_type_compilation PARAMS ((tree, int));
-/* Save the current set of obstacks, but don't change them. */
-extern void push_obstacks_nochange PARAMS ((void));
-
-extern void permanent_allocation PARAMS ((int));
-extern void push_momentary PARAMS ((void));
-extern void clear_momentary PARAMS ((void));
-extern void pop_momentary PARAMS ((void));
-extern void end_temporary_allocation PARAMS ((void));
-
-/* Pop the obstack selection stack. */
-extern void pop_obstacks PARAMS ((void));
-
/* In alias.c */
extern void record_component_aliases PARAMS ((tree));
extern HOST_WIDE_INT get_alias_set PARAMS ((tree));
+extern int alias_sets_conflict_p PARAMS ((HOST_WIDE_INT,
+ HOST_WIDE_INT));
+extern int readonly_fields_p PARAMS ((tree));
+extern int objects_must_conflict_p PARAMS ((tree, tree));
/* In c-common.c */
extern HOST_WIDE_INT lang_get_alias_set PARAMS ((tree));
+struct obstack;
+
/* In tree.c */
extern int really_constant_p PARAMS ((tree));
-extern void push_obstacks PARAMS ((struct obstack *,
- struct obstack *));
-extern void pop_momentary_nofree PARAMS ((void));
-extern void preserve_momentary PARAMS ((void));
-extern void saveable_allocation PARAMS ((void));
-extern void temporary_allocation PARAMS ((void));
-extern void resume_temporary_allocation PARAMS ((void));
extern void set_identifier_size PARAMS ((int));
extern int int_fits_type_p PARAMS ((tree, tree));
extern int tree_log2 PARAMS ((tree));
extern int tree_floor_log2 PARAMS ((tree));
-extern void preserve_initializer PARAMS ((void));
extern void preserve_data PARAMS ((void));
extern int object_permanent_p PARAMS ((tree));
extern int type_precision PARAMS ((tree));
extern void type_hash_add PARAMS ((unsigned int, tree));
extern unsigned int type_hash_list PARAMS ((tree));
extern int simple_cst_list_equal PARAMS ((tree, tree));
-extern void debug_obstack PARAMS ((char *));
-extern void rtl_in_current_obstack PARAMS ((void));
-extern void rtl_in_saveable_obstack PARAMS ((void));
-extern void init_tree_codes PARAMS ((void));
extern void dump_tree_statistics PARAMS ((void));
extern void print_obstack_statistics PARAMS ((const char *,
struct obstack *));
extern void start_identifier_warnings PARAMS ((void));
extern void gcc_obstack_init PARAMS ((struct obstack *));
extern void init_obstacks PARAMS ((void));
-extern void obfree PARAMS ((char *));
extern void build_common_tree_nodes PARAMS ((int));
extern void build_common_tree_nodes_2 PARAMS ((int));
+extern void mark_tree_hashtable PARAMS ((void *));
/* In function.c */
extern void setjmp_protect_args PARAMS ((void));
extern void fixup_signed_type PARAMS ((tree));
/* varasm.c */
-extern void make_decl_rtl PARAMS ((tree, const char *, int));
+extern void make_decl_rtl PARAMS ((tree, const char *));
extern void make_decl_one_only PARAMS ((tree));
extern int supports_one_only PARAMS ((void));
extern void variable_section PARAMS ((tree, int));
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