/* The lang_hooks data structure.
- Copyright 2001, 2002, 2003 Free Software Foundation, Inc.
+ Copyright 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
int (*cannot_inline_tree_fn) (tree *);
int (*disregard_inline_limits) (tree);
tree (*add_pending_fn_decls) (void *, tree);
- int (*tree_chain_matters_p) (tree);
int (*auto_var_in_fn_p) (tree, tree);
- tree (*copy_res_decl_for_inlining) (tree, tree, tree,
- void *, int *, tree);
int (*anon_aggr_type_p) (tree);
- bool (*var_mod_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 (*estimate_num_insns) (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) (tree);
+ /* 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) (tree);
};
/* 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. */
arguments. The default hook aborts. */
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);
+
+ /* 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
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
/* 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);
+ rtx (*expand_expr) (tree, rtx, enum machine_mode, int, rtx *);
+
+ /* Called by expand_expr to generate the definition of a decl. Returns
+ 1 if handled, 0 otherwise. */
+ int (*expand_decl) (tree);
/* Prepare expr to be an argument of a TRUTH_NOT_EXPR or other logical
operation.
error_mark_node). */
tree (*truthvalue_conversion) (tree);
- /* Possibly apply default attributes to a function (represented by
- a FUNCTION_DECL). */
- void (*insert_default_attributes) (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
codes that safe_from_p needs to know about. Since same_from_p will
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);
+ bool (*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
+ /* Reset argument so that it can be expanded again.
+ 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.
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
types in C++. */
const char *(*decl_printable_name) (tree decl, 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 *);
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);
+
+ /* Return a definition for a builtin function named NAME and whose data type
+ is TYPE. TYPE should be a function type with argument types.
+ FUNCTION_CODE tells later passes how to compile calls to this function.
+ See tree.h for its possible values.
+
+ If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
+ the name to be called if we can't opencode the function. If
+ ATTRS is nonzero, use that for the function's attribute list. */
+ tree (*builtin_function) (const char *name, tree type, int function_code,
+ enum built_in_class bt_class,
+ const char *library_name, tree attrs);
+
/* Whenever you add entries here, make sure you adjust langhooks-def.h
and langhooks.c accordingly. */
};
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