/* The lang_hooks data structure.
- Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
- Free Software Foundation, Inc.
+ Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+ 2011 Free Software Foundation, Inc.
This file is part of GCC.
/* This file should be #include-d after tree.h. */
-struct diagnostic_context;
struct diagnostic_info;
struct gimplify_omp_ctx;
/* 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 *);
-
- /* Emit thunks associated to function. */
- void (*emit_associated_thunks) (tree);
};
/* The following hooks are used by tree-dump.c. */
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
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 *);
+
+ /* A type descriptive of TYPE's complex layout generated to help the
+ debugger to decode variable-length or self-referential constructs.
+ This is only used for the AT_GNAT_descriptive_type DWARF attribute. */
+ tree (*descriptive_type) (const_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. */
- bool hash_types;
};
/* Language hooks related to decls and the symbol table. */
struct lang_hooks_for_decls
{
- /* 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);
+ /* Return true if we are in the global binding level. This hook is really
+ needed only if the language supports variable-sized types at the global
+ level, i.e. declared outside subprograms. */
+ bool (*global_bindings_p) (void);
/* Function to add a decl to the current scope level. Takes one
argument, a decl to add. Returns that decl, or, if the same
/* 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);
predetermined, OMP_CLAUSE_DEFAULT_UNSPECIFIED otherwise. */
enum omp_clause_default_kind (*omp_predetermined_sharing) (tree);
+ /* Return decl that should be reported for DEFAULT(NONE) failure
+ diagnostics. Usually the DECL passed in. */
+ tree (*omp_report_decl) (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
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. */
struct lang_hooks
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
on unrecognized codes. */
size_t (*tree_size) (enum tree_code);
- /* The first callback made to the front end, for simple
- initialization needed before any calls to handle_option. Return
- the language mask to filter the switch array with. */
- unsigned int (*init_options) (unsigned int argc, const char **argv);
+ /* Return the language mask used for converting argv into a sequence
+ of options. */
+ unsigned int (*option_lang_mask) (void);
+
+ /* Initialize variables in an options structure. */
+ void (*init_options_struct) (struct gcc_options *opts);
+
+ /* After the initialize_diagnostics hook is called, do any simple
+ initialization needed before any calls to handle_option, other
+ than that done by the init_options_struct hook. */
+ void (*init_options) (unsigned int decoded_options_count,
+ struct cl_decoded_option *decoded_options);
/* Callback used to perform language-specific initialization for the
global diagnostic context structure. */
- void (*initialize_diagnostics) (struct diagnostic_context *);
+ void (*initialize_diagnostics) (diagnostic_context *);
+
+ /* Return true if a warning should be given about option OPTION,
+ which is for the wrong language, false if it should be quietly
+ ignored. */
+ bool (*complain_wrong_lang_p) (const struct cl_option *option);
/* 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
checking whether ARG is NULL, which indicates that no argument
was in fact supplied. For -f and -W switches, VALUE is 1 or 0
- for the positive and negative forms respectively.
-
- Return 1 if the switch is valid, 0 if invalid, and -1 if it's
- valid and should not be treated as language-independent too. */
- int (*handle_option) (size_t code, const char *arg, int value);
+ for the positive and negative forms respectively. HANDLERS should
+ be passed to any recursive handle_option calls. LOC is the
+ location of the option.
- /* 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);
+ Return true if the switch is valid, false if invalid. */
+ bool (*handle_option) (size_t code, const char *arg, int value, int kind,
+ location_t loc,
+ const struct cl_option_handlers *handlers);
/* Called when all command line options have been parsed to allow
further processing and initialization
/* Called at the end of compilation, as a finalizer. */
void (*finish) (void);
- /* Parses the entire file. The argument is nonzero to cause bison
- parsers to dump debugging information during parsing. */
- void (*parse_file) (int);
+ /* Parses the entire file. */
+ void (*parse_file) (void);
/* Determines if it's ok for a function to have no noreturn attribute. */
bool (*missing_noreturn_ok_p) (tree);
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 *);
-
/* 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 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 *,
+ void (*print_error_function) (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
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 *, 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. */
- tree (*fold_obj_type_ref) (tree, tree);
-
/* Do language specific processing in the builtin function DECL */
tree (*builtin_function) (tree decl);
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);
+
+ /* If non-NULL, this is a function that returns a function decl to be
+ executed if an unhandled exception is propagated out of a cleanup
+ region. For example, in C++, an exception thrown by a destructor
+ during stack unwinding is required to result in a call to
+ `std::terminate', so the C++ version of this function returns a
+ FUNCTION_DECL for `std::terminate'. */
+ tree (*eh_protect_cleanup_actions) (void);
+
+ /* Return true if a stmt can fallthru. Used by block_may_fallthru
+ to possibly handle language trees. */
+ bool (*block_may_fallthru) (const_tree);
+
+ /* True if this language uses __cxa_end_cleanup when the ARM EABI
+ is enabled. */
+ bool eh_use_cxa_end_cleanup;
+
+ /* True if this language requires deep unsharing of tree nodes prior to
+ gimplification. */
+ bool deep_unsharing;
+
/* 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,
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