/* The lang_hooks data structure.
- Copyright 2001, 2002, 2003 Free Software Foundation, Inc.
+ Copyright 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
This file is part of GCC.
You should have received a copy of the GNU General Public License
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. */
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
#ifndef GCC_LANG_HOOKS_H
#define GCC_LANG_HOOKS_H
struct diagnostic_context;
+struct gimplify_omp_ctx;
+
/* A print hook for print_tree (). */
typedef void (*lang_print_tree_hook) (FILE *, tree, int indent);
struct lang_hooks_for_tree_inlining
{
- union tree_node *(*walk_subtrees) (union tree_node **, int *,
- union tree_node *(*)
- (union tree_node **, int *, void *),
- void *, void *);
- int (*cannot_inline_tree_fn) (union tree_node **);
- int (*disregard_inline_limits) (union tree_node *);
- union tree_node *(*add_pending_fn_decls) (void *, union tree_node *);
- int (*tree_chain_matters_p) (union tree_node *);
- int (*auto_var_in_fn_p) (union tree_node *, union tree_node *);
- union tree_node *(*copy_res_decl_for_inlining) (union tree_node *,
- union tree_node *,
- union tree_node *,
- void *, int *, tree);
- int (*anon_aggr_type_p) (union tree_node *);
- bool (*var_mod_type_p) (union tree_node *);
- int (*start_inlining) (union tree_node *);
- void (*end_inlining) (union tree_node *);
- union tree_node *(*convert_parm_for_inlining) (union tree_node *,
- union tree_node *,
- union tree_node *);
+ tree (*walk_subtrees) (tree *, int *,
+ tree (*) (tree *, int *, void *),
+ void *, struct pointer_set_t*);
+ int (*cannot_inline_tree_fn) (tree *);
+ int (*disregard_inline_limits) (tree);
+ tree (*add_pending_fn_decls) (void *, tree);
+ int (*auto_var_in_fn_p) (tree, tree);
+ int (*anon_aggr_type_p) (tree);
+ bool (*var_mod_type_p) (tree, tree);
+ int (*start_inlining) (tree);
+ void (*end_inlining) (tree);
+ tree (*convert_parm_for_inlining) (tree, tree, tree, int);
};
struct lang_hooks_for_callgraph
{
- /* Function passed as argument is needed and will be compiled.
- Lower the representation so the calls are explicit. */
- void (*lower_function) (union tree_node *);
+ /* The node passed is a language-specific tree node. If its contents
+ are relevant to use of other declarations, mark them. */
+ tree (*analyze_expr) (tree *, int *, tree);
+
/* Produce RTL for function passed as argument. */
- void (*expand_function) (union tree_node *);
+ void (*expand_function) (tree);
};
/* Lang hooks for management of language-specific data or status
/* Called when leaving a nested function. */
void (*leave_nested) (struct function *);
+
+ /* Determines if it's ok for a function to have no noreturn attribute. */
+ bool (*missing_noreturn_ok_p) (tree);
};
/* The following hooks are used by tree-dump.c. */
/* Given a type, apply default promotions to unnamed function
arguments and return the new type. Return the same type if no
change. Required by any language that supports variadic
- arguments. The default hook aborts. */
+ arguments. The default hook dies. */
tree (*type_promotes_to) (tree);
+ /* Register TYPE as a builtin type with the indicated NAME. The
+ TYPE is placed in the outermost lexical scope. The semantics
+ should be analogous to:
+
+ typedef TYPE NAME;
+
+ in C. The default hook ignores the declaration. */
+ void (*register_builtin_type) (tree, const char *);
+
/* This routine is called in tree.c to print an error message for
invalid use of an incomplete type. VALUE is the expression that
was used (or 0 if that isn't known) and TYPE is the type that was
invalid. */
void (*incomplete_type_error) (tree value, tree type);
+
+ /* Called from assign_temp to return the maximum size, if there is one,
+ for a type. */
+ tree (*max_size) (tree);
+
+ /* Register language specific type size variables as potentially OpenMP
+ firstprivate variables. */
+ void (*omp_firstprivatize_type_sizes) (struct gimplify_omp_ctx *, tree);
+
+ /* Nonzero if types that are identical are to be hashed so that only
+ one copy is kept. If a language requires unique types for each
+ user-specified type, such as Ada, this should be set to TRUE. */
+ bool hash_types;
};
/* Language hooks related to decls and the symbol table. */
struct lang_hooks_for_decls
{
- /* Enter a new lexical scope. Argument is always zero when called
- from outside the front end. */
- void (*pushlevel) (int);
-
- /* Exit a lexical scope and return a BINDING for that scope.
- Takes three arguments:
- KEEP -- nonzero if there were declarations in this scope.
- REVERSE -- reverse the order of decls before returning them.
- FUNCTIONBODY -- nonzero if this level is the body of a function. */
- tree (*poplevel) (int, int, int);
-
/* Returns nonzero if we are in the global binding level. Ada
returns -1 for an undocumented reason used in stor-layout.c. */
int (*global_bindings_p) (void);
to handle the BLOCK node inside the BIND_EXPR. */
void (*insert_block) (tree);
- /* Set the BLOCK node for the current scope level. */
- void (*set_block) (tree);
-
/* Function to add a decl to the current scope level. Takes one
argument, a decl to add. Returns that decl, or, if the same
symbol is already declared, may return a different decl for that
/* True if this decl may be called via a sibcall. */
bool (*ok_for_sibcall) (tree);
+
+ /* Return the COMDAT group into which this DECL should be placed.
+ It is known that the DECL belongs in *some* COMDAT group when
+ this hook is called. The return value will be used immediately,
+ but not explicitly deallocated, so implementations should not use
+ xmalloc to allocate the string returned. (Typically, the return
+ value will be the string already stored in an
+ IDENTIFIER_NODE.) */
+ const char * (*comdat_group) (tree);
+
+ /* True if OpenMP should privatize what this DECL points to rather
+ than the DECL itself. */
+ bool (*omp_privatize_by_reference) (tree);
+
+ /* Return sharing kind if OpenMP sharing attribute of DECL is
+ predetermined, OMP_CLAUSE_DEFAULT_UNSPECIFIED otherwise. */
+ enum omp_clause_default_kind (*omp_predetermined_sharing) (tree);
+
+ /* Return true if DECL's DECL_VALUE_EXPR (if any) should be
+ disregarded in OpenMP construct, because it is going to be
+ remapped during OpenMP lowering. SHARED is true if DECL
+ is going to be shared, false if it is going to be privatized. */
+ bool (*omp_disregard_value_expr) (tree, bool);
+
+ /* Return true if DECL that is shared iff SHARED is true should
+ be put into OMP_CLAUSE_PRIVATE_DEBUG. */
+ bool (*omp_private_debug_clause) (tree, bool);
+
+ /* Build and return code for a default constructor for DECL in
+ response to CLAUSE. Return NULL if nothing to be done. */
+ tree (*omp_clause_default_ctor) (tree clause, tree decl);
+
+ /* Build and return code for a copy constructor from SRC to DST. */
+ tree (*omp_clause_copy_ctor) (tree clause, tree dst, tree src);
+
+ /* Similarly, except use an assignment operator instead. */
+ tree (*omp_clause_assign_op) (tree clause, tree dst, tree src);
+
+ /* Build and return code destructing DECL. Return NULL if nothing
+ to be done. */
+ tree (*omp_clause_dtor) (tree clause, tree decl);
};
/* Language-specific hooks. See langhooks-def.h for defaults. */
identifier nodes long enough for the language-specific slots. */
size_t identifier_size;
- /* Determines the size of any language-specific 'x' or 'c' nodes.
- Since it is called from make_node, the only information available
- is the tree code. Expected to abort on unrecognized codes. */
+ /* Determines the size of any language-specific tcc_constant or
+ tcc_exceptional nodes. Since it is called from make_node, the
+ only information available is the tree code. Expected to die
+ on unrecognized codes. */
size_t (*tree_size) (enum tree_code);
/* The first callback made to the front end, for simple
the language mask to filter the switch array with. */
unsigned int (*init_options) (unsigned int argc, const char **argv);
+ /* Callback used to perform language-specific initialization for the
+ global diagnostic context structure. */
+ void (*initialize_diagnostics) (struct diagnostic_context *);
+
/* Handle the switch CODE, which has real type enum opt_code from
options.h. If the switch takes an argument, it is passed in ARG
which points to permanent storage. The handler is responsible for
valid and should not be treated as language-independent too. */
int (*handle_option) (size_t code, const char *arg, int value);
- /* Handle a filename on the command line. */
- void (*handle_filename) (const char *filename);
-
/* Return false to use the default complaint about a missing
argument, otherwise output a complaint and return true. */
bool (*missing_argument) (const char *opt, size_t code);
/* Called by expand_expr for language-specific tree codes.
Fourth argument is actually an enum expand_modifier. */
- rtx (*expand_expr) (tree, rtx, enum machine_mode, int);
-
- /* Prepare expr to be an argument of a TRUTH_NOT_EXPR or other logical
- operation.
+ rtx (*expand_expr) (tree, rtx, enum machine_mode, int, rtx *);
- This preparation consists of taking the ordinary representation
- of an expression expr and producing a valid tree boolean
- expression describing whether expr is nonzero. We could simply
- always do build_binary_op (NE_EXPR, expr, integer_zero_node, 1),
- but we optimize comparisons, &&, ||, and !.
-
- The result should be an expression of boolean type (if not an
- error_mark_node). */
- tree (*truthvalue_conversion) (tree);
-
- /* Possibly apply default attributes to a function (represented by
- a FUNCTION_DECL). */
- void (*insert_default_attributes) (tree);
+ /* Called by expand_expr to generate the definition of a decl. Returns
+ 1 if handled, 0 otherwise. */
+ int (*expand_decl) (tree);
/* Hook called by safe_from_p for language-specific tree codes. It is
up to the language front-end to install a hook if it has any such
compilation. Default hook is does nothing. */
void (*finish_incomplete_decl) (tree);
- /* Function used by unsafe_for_reeval. A non-negative number is
- returned directly from unsafe_for_reeval, a negative number falls
- through. The default hook returns a negative number. */
- int (*unsafe_for_reeval) (tree);
-
/* Mark EXP saying that we need to be able to take the address of
it; it should not be allocated in a register. Return true if
successful. */
bool (*mark_addressable) (tree);
/* Hook called by staticp for language-specific tree codes. */
- int (*staticp) (tree);
+ tree (*staticp) (tree);
/* Replace the DECL_LANG_SPECIFIC data, which may be NULL, of the
DECL_NODE with a newly GC-allocated copy. */
void (*dup_lang_specific_decl) (tree);
- /* Called before its argument, an UNSAVE_EXPR, is to be
- unsaved. Modify it in-place so that all the evaluate only once
- things are cleared out. */
- tree (*unsave_expr_now) (tree);
-
- /* Called by expand_expr to build and return the cleanup-expression
- for the passed TARGET_EXPR. Return NULL if there is none. */
- tree (*maybe_build_cleanup) (tree);
-
/* Set the DECL_ASSEMBLER_NAME for a node. If it is the sort of
thing that the assembler should talk about, set
DECL_ASSEMBLER_NAME to an appropriate IDENTIFIER_NODE.
assembler does not talk about it. */
void (*set_decl_assembler_name) (tree);
- /* Return nonzero if fold-const is free to use bit-field
- optimizations, for instance in fold_truthop(). */
- bool (*can_use_bit_fields_p) (void);
-
- /* Nonzero if TYPE_READONLY and TREE_READONLY should always be honored. */
- bool honor_readonly;
+ /* Nonzero if operations on types narrower than their mode should
+ have their results reduced to the precision of the type. */
+ bool reduce_bit_field_operations;
/* Nonzero if this front end does not generate a dummy BLOCK between
the outermost scope of the function and the FUNCTION_DECL. See
this hook. It should output to stderr. */
void (*print_statistics) (void);
- /* Called by print_tree when there is a tree of class 'x' that it
- doesn't know how to display. */
+ /* Called by print_tree when there is a tree of class tcc_exceptional
+ that it doesn't know how to display. */
lang_print_tree_hook print_xnode;
- /* Called to print language-dependent parts of a class 'd', class
- 't', and IDENTIFIER_NODE nodes. */
+ /* Called to print language-dependent parts of tcc_decl, tcc_type,
+ and IDENTIFIER_NODE nodes. */
lang_print_tree_hook print_decl;
lang_print_tree_hook print_type;
lang_print_tree_hook print_identifier;
types in C++. */
const char *(*decl_printable_name) (tree decl, int verbosity);
+ /* Computes the dwarf-2/3 name for a tree. VERBOSITY determines what
+ information will be printed: 0: DECL_NAME, demangled as
+ necessary. 1: and scope information. */
+ const char *(*dwarf_name) (tree, int verbosity);
+
+ /* This compares two types for equivalence ("compatible" in C-based languages).
+ This routine should only return 1 if it is sure. It should not be used
+ in contexts where erroneously returning 0 causes problems. */
+ int (*types_compatible_p) (tree x, tree y);
+
+ /* Given a CALL_EXPR, return a function decl that is its target. */
+ tree (*lang_get_callee_fndecl) (tree);
+
/* Called by report_error_function to print out function name. */
void (*print_error_function) (struct diagnostic_context *, const char *);
semantics in cases that it doesn't want to handle specially. */
tree (*expr_size) (tree);
+ /* Convert a character from the host's to the target's character
+ set. The character should be in what C calls the "basic source
+ character set" (roughly, the set of characters defined by plain
+ old ASCII). The default is to return the character unchanged,
+ which is correct in most circumstances. Note that both argument
+ and result should be sign-extended under -fsigned-char,
+ zero-extended under -fno-signed-char. */
+ HOST_WIDE_INT (*to_target_charset) (HOST_WIDE_INT);
+
/* Pointers to machine-independent attribute tables, for front ends
using attribs.c. If one is NULL, it is ignored. Respectively, a
table of attributes specific to the language, a table of
struct lang_hooks_for_types types;
+ /* Perform language-specific gimplification on the argument. Returns an
+ enum gimplify_status, though we can't see that type here. */
+ int (*gimplify_expr) (tree *, tree *, tree *);
+
+ /* Fold an OBJ_TYPE_REF expression to the address of a function.
+ KNOWN_TYPE carries the true type of the OBJ_TYPE_REF_OBJECT. */
+ tree (*fold_obj_type_ref) (tree, tree);
+
+ /* Do language specific processing in the builtin function DECL */
+ tree (*builtin_function) (tree decl);
+
+ /* Used to set up the tree_contains_structure array for a frontend. */
+ void (*init_ts) (void);
+
+ /* Called by recompute_tree_invariant_for_addr_expr to go from EXPR
+ to a contained expression or DECL, possibly updating *TC, *TI or
+ *SE if in the process TREE_CONSTANT, TREE_INVARIANT or
+ TREE_SIDE_EFFECTS need updating. */
+ tree (*expr_to_decl) (tree expr, bool *tc, bool *ti, bool *se);
+
/* Whenever you add entries here, make sure you adjust langhooks-def.h
and langhooks.c accordingly. */
};
/* Each front end provides its own. */
extern const struct lang_hooks lang_hooks;
+extern tree add_builtin_function (const char *name, tree type,
+ int function_code, enum built_in_class cl,
+ const char *library_name,
+ tree attrs);
#endif /* GCC_LANG_HOOKS_H */