/* The lang_hooks data structure.
- Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
This file is part of GCC.
struct gimplify_omp_ctx;
+struct array_descr_info;
+
/* A print hook for print_tree (). */
typedef void (*lang_print_tree_hook) (FILE *, tree, int indent);
+enum classify_record
+ { RECORD_IS_STRUCT, RECORD_IS_CLASS, RECORD_IS_INTERFACE };
+
/* The following hooks are documented in langhooks.c. Must not be
NULL. */
{
/* 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);
-
- /* Emmit thunks associated to function. */
- void (*emit_associated_thunks) (tree);
-};
-
-/* Lang hooks for management of language-specific data or status
- when entering / leaving functions etc. */
-struct lang_hooks_for_functions
-{
- /* Called when entering a function. */
- void (*init) (struct function *);
-
- /* Called when leaving a function. */
- void (*final) (struct function *);
-
- /* Called when entering a nested function. */
- void (*enter_nested) (struct function *);
-
- /* 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);
+ tree (*analyze_expr) (tree *, int *);
};
/* The following hooks are used by tree-dump.c. */
language-specific processing is required. */
tree (*make_type) (enum tree_code);
+ /* Return what kind of RECORD_TYPE this is, mainly for purposes of
+ debug information. If not defined, record types are assumed to
+ be structures. */
+ enum classify_record (*classify_record) (tree);
+
/* Given MODE and UNSIGNEDP, return a suitable type-tree with that
mode. */
tree (*type_for_mode) (enum machine_mode, int);
e.g. C++ template implicit specializations. */
bool (*generic_p) (const_tree);
+ /* Returns the TREE_VEC of elements of a given generic argument pack. */
+ tree (*get_argument_pack_elems) (const_tree);
+
/* 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
FUNCTION_TYPEs. */
bool (*type_hash_eq) (const_tree, const_tree);
+ /* Return TRUE if TYPE uses a hidden descriptor and fills in information
+ for the debugger about the array bounds, strides, etc. */
+ bool (*get_array_descr_info) (const_tree, struct array_descr_info *);
+
+ /* Fill in information for the debugger about the bounds of TYPE. */
+ void (*get_subrange_bounds) (const_tree, tree *, tree *);
+
+ /* If we requested a pointer to a vector, build up the pointers that
+ we stripped off while looking for the inner type. Similarly for
+ return values from functions. The argument TYPE is the top of the
+ chain, and BOTTOM is the new type which we will point to. */
+ tree (*reconstruct_complex_type) (tree, 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. */
returns -1 for an undocumented reason used in stor-layout.c. */
int (*global_bindings_p) (void);
- /* Insert BLOCK at the end of the list of subblocks of the
- current binding level. This is used when a BIND_EXPR is expanded,
- to handle the BLOCK node inside the BIND_EXPR. */
- void (*insert_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
/* Returns the chain of decls so far in the current scope level. */
tree (*getdecls) (void);
+ /* Returns true if DECL is explicit member function. */
+ bool (*function_decl_explicit_p) (tree);
+
+ /* Returns True if the parameter is a generic parameter decl
+ of a generic type, e.g a template template parameter for the C++ FE. */
+ bool (*generic_generic_parameter_decl_p) (const_tree);
+
+ /* Determine if a function parameter got expanded from a
+ function parameter pack. */
+ bool (*function_parm_expanded_from_pack_p) (tree, tree);
+
+ /* Returns the generic declaration of a generic function instantiations. */
+ tree (*get_generic_function_decl) (const_tree);
+
/* Returns true when we should warn for an unused global DECL.
We will already have checked that it has static binding. */
bool (*warn_unused_global) (const_tree);
/* True if this decl may be called via a sibcall. */
bool (*ok_for_sibcall) (const_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) (const_tree);
be put into OMP_CLAUSE_PRIVATE_DEBUG. */
bool (*omp_private_debug_clause) (tree, bool);
+ /* Return true if DECL in private clause needs
+ OMP_CLAUSE_PRIVATE_OUTER_REF on the private clause. */
+ bool (*omp_private_outer_ref) (tree);
+
/* 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);
+ response to CLAUSE. OUTER is corresponding outer region's
+ variable if needed. Return NULL if nothing to be done. */
+ tree (*omp_clause_default_ctor) (tree clause, tree decl, tree outer);
/* Build and return code for a copy constructor from SRC to DST. */
tree (*omp_clause_copy_ctor) (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);
+
+ /* Do language specific checking on an implicitly determined clause. */
+ void (*omp_finish_clause) (tree clause);
+};
+
+/* Language hooks related to LTO serialization. */
+
+struct lang_hooks_for_lto
+{
+ /* Begin a new LTO section named NAME. */
+ void (*begin_section) (const char *name);
+
+ /* Write DATA of length LEN to the currently open LTO section. BLOCK is a
+ pointer to the dynamically allocated memory containing DATA. The
+ append_data function is responsible for freeing it when it is no longer
+ needed. */
+ void (*append_data) (const void *data, size_t len, void *block);
+
+ /* End the previously begun LTO section. */
+ void (*end_section) (void);
};
/* Language-specific hooks. See langhooks-def.h for defaults. */
identifier nodes long enough for the language-specific slots. */
size_t identifier_size;
+ /* Remove any parts of the tree that are used only by the FE. */
+ void (*free_lang_data) (tree);
+
/* 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
parsers to dump debugging information during parsing. */
void (*parse_file) (int);
- /* Called immediately after parsing to clear the binding stack. */
- void (*clear_binding_stack) (void);
+ /* Determines if it's ok for a function to have no noreturn attribute. */
+ bool (*missing_noreturn_ok_p) (tree);
/* Called to obtain the alias set to be used for an expression or type.
Returns -1 if the language does nothing special for it. */
alias_set_type (*get_alias_set) (tree);
- /* 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 *);
-
- /* Called by expand_expr to generate the definition of a decl. Returns
- 1 if handled, 0 otherwise. */
- int (*expand_decl) (tree);
-
/* Function to finish handling an incomplete decl at the end of
compilation. Default hook is does nothing. */
void (*finish_incomplete_decl) (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. */
- 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);
assembler does not talk about it. */
void (*set_decl_assembler_name) (tree);
- /* 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
- is_body_block in stmt.c, and its callers. */
- bool no_body_blocks;
-
/* The front end can add its own statistics to -fmem-report with
this hook. It should output to stderr. */
void (*print_statistics) (void);
information will be printed: 0: DECL_NAME, demangled as
necessary. 1: and scope information. 2: and any other
information that might be interesting, such as function parameter
- types in C++. */
+ types in C++. The name is in the internal character set and
+ needs to be converted to the locale character set of diagnostics,
+ or to the execution character set for strings such as
+ __PRETTY_FUNCTION__. */
const char *(*decl_printable_name) (tree decl, int verbosity);
/* Computes the dwarf-2/3 name for a tree. VERBOSITY determines what
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) (const_tree);
-
/* Called by report_error_function to print out function name. */
void (*print_error_function) (struct diagnostic_context *, const char *,
struct diagnostic_info *);
- /* Called from expr_size to calculate the size of the value of an
- expression in a language-dependent way. Returns a tree for the size
- in bytes. A frontend can call lhd_expr_size to get the default
- semantics in cases that it doesn't want to handle specially. */
- tree (*expr_size) (const_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
const struct attribute_spec *common_attribute_table;
const struct attribute_spec *format_attribute_table;
- /* Function-related language hooks. */
- struct lang_hooks_for_functions function;
-
struct lang_hooks_for_tree_inlining tree_inlining;
struct lang_hooks_for_callgraph callgraph;
struct lang_hooks_for_types types;
+ struct lang_hooks_for_lto lto;
+
+ /* Returns the generic parameters of an instantiation of
+ a generic type or decl, e.g. C++ template instantiation. */
+ tree (*get_innermost_generic_parms) (const_tree);
+
+ /* Returns the TREE_VEC of arguments of an instantiation
+ of a generic type of decl, e.g. C++ template instantiation. */
+ tree (*get_innermost_generic_args) (const_tree);
+
+ /* Determine if a tree is a function parameter pack. */
+ bool (*function_parameter_pack_p) (const_tree);
+
/* 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 *);
+ int (*gimplify_expr) (tree *, gimple_seq *, gimple_seq *);
/* Fold an OBJ_TYPE_REF expression to the address of a function.
KNOWN_TYPE carries the true type of the OBJ_TYPE_REF_OBJECT. */
/* Do language specific processing in the builtin function DECL */
tree (*builtin_function) (tree decl);
+ /* Like builtin_function, but make sure the scope is the external scope.
+ This is used to delay putting in back end builtin functions until the ISA
+ that defines the builtin is declared via function specific target options,
+ which can save memory for machines like the x86_64 that have multiple
+ ISAs. If this points to the same function as builtin_function, the
+ backend must add all of the builtins at program initialization time. */
+ tree (*builtin_function_ext_scope) (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);
+ to a contained expression or DECL, possibly updating *TC or *SE
+ if in the process TREE_CONSTANT or TREE_SIDE_EFFECTS need updating. */
+ tree (*expr_to_decl) (tree expr, bool *tc, bool *se);
+
+ /* The EH personality function decl. */
+ tree (*eh_personality) (void);
+
+ /* Map a type to a runtime object to match type. */
+ tree (*eh_runtime_type) (tree);
+
+ /* True if this language uses __cxa_end_cleanup when the ARM EABI
+ is enabled. */
+ bool eh_use_cxa_end_cleanup;
/* 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 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);
+extern tree add_builtin_function_ext_scope (const char *name, tree type,
+ int function_code,
+ enum built_in_class cl,
+ const char *library_name,
+ tree attrs);
+
#endif /* GCC_LANG_HOOKS_H */
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