/* The lang_hooks data structure.
- Copyright 2001, 2002 Free Software Foundation, Inc.
+ Copyright 2001, 2002, 2003 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
+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. */
struct diagnostic_context;
/* A print hook for print_tree (). */
-typedef void (*lang_print_tree_hook) PARAMS ((FILE *, tree, int indent));
+typedef void (*lang_print_tree_hook) (FILE *, tree, int indent);
/* The following hooks are documented in langhooks.c. Must not be
NULL. */
struct lang_hooks_for_tree_inlining
{
- union tree_node *(*walk_subtrees) PARAMS ((union tree_node **, int *,
- union tree_node *(*)
- (union tree_node **,
- int *, void *),
- void *, void *));
- int (*cannot_inline_tree_fn) PARAMS ((union tree_node **));
- int (*disregard_inline_limits) PARAMS ((union tree_node *));
- union tree_node *(*add_pending_fn_decls) PARAMS ((void *,
- union tree_node *));
- int (*tree_chain_matters_p) PARAMS ((union tree_node *));
- int (*auto_var_in_fn_p) PARAMS ((union tree_node *, union tree_node *));
- union tree_node *(*copy_res_decl_for_inlining) PARAMS ((union tree_node *,
- union tree_node *,
- union tree_node *,
- void *, int *,
- void *));
- int (*anon_aggr_type_p) PARAMS ((union tree_node *));
- int (*start_inlining) PARAMS ((union tree_node *));
- void (*end_inlining) PARAMS ((union tree_node *));
- union tree_node *(*convert_parm_for_inlining) PARAMS ((union tree_node *,
- union tree_node *,
- union tree_node *));
+ tree (*walk_subtrees) (tree *, int *,
+ tree (*) (tree *, int *, void *),
+ void *, void *);
+ 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);
+ int (*start_inlining) (tree);
+ void (*end_inlining) (tree);
+ tree (*convert_parm_for_inlining) (tree, tree, tree);
+ int (*estimate_num_insns) (tree);
+};
+
+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);
+ /* Produce RTL for function passed as argument. */
+ void (*expand_function) (tree);
};
/* Lang hooks for management of language-specific data or status
struct lang_hooks_for_functions
{
/* Called when entering a function. */
- void (*init) PARAMS ((struct function *));
+ void (*init) (struct function *);
/* Called when leaving a function. */
- void (*free) PARAMS ((struct function *));
+ void (*final) (struct function *);
/* Called when entering a nested function. */
- void (*enter_nested) PARAMS ((struct function *));
+ void (*enter_nested) (struct function *);
/* Called when leaving a nested function. */
- void (*leave_nested) PARAMS ((struct function *));
-
- /* Lang-specific function data marking for GC. */
- void (*mark) PARAMS ((struct function *));
+ void (*leave_nested) (struct function *);
};
/* The following hooks are used by tree-dump.c. */
struct lang_hooks_for_tree_dump
{
- /* Dump language-specific parts of tree nodes. Returns non-zero if it
+ /* Dump language-specific parts of tree nodes. Returns nonzero if it
does not want the usual dumping of the second argument. */
- int (*dump_tree) PARAMS ((void *, tree));
+ bool (*dump_tree) (void *, tree);
/* Determine type qualifiers in a language-specific way. */
- int (*type_quals) PARAMS ((tree));
+ int (*type_quals) (tree);
};
/* Hooks related to types. */
{
/* Return a new type (with the indicated CODE), doing whatever
language-specific processing is required. */
- tree (*make_type) PARAMS ((enum tree_code));
-
+ tree (*make_type) (enum tree_code);
+
/* Given MODE and UNSIGNEDP, return a suitable type-tree with that
mode. */
- tree (*type_for_mode) PARAMS ((enum machine_mode, int));
+ tree (*type_for_mode) (enum machine_mode, int);
/* Given PRECISION and UNSIGNEDP, return a suitable type-tree for an
integer type with at least that precision. */
- tree (*type_for_size) PARAMS ((unsigned, int));
+ tree (*type_for_size) (unsigned, int);
/* Given an integer type T, return a type like T but unsigned.
If T is unsigned, the value is T. */
- tree (*unsigned_type) PARAMS ((tree));
+ tree (*unsigned_type) (tree);
/* Given an integer type T, return a type like T but signed.
If T is signed, the value is T. */
- tree (*signed_type) PARAMS ((tree));
+ tree (*signed_type) (tree);
/* Return a type the same as TYPE except unsigned or signed
according to UNSIGNEDP. */
- tree (*signed_or_unsigned_type) PARAMS ((int, tree));
+ tree (*signed_or_unsigned_type) (int, 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
arguments. The default hook aborts. */
- tree (*type_promotes_to) PARAMS ((tree));
+ tree (*type_promotes_to) (tree);
/* 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) PARAMS ((tree value, tree type));
+ void (*incomplete_type_error) (tree value, tree type);
};
/* Language hooks related to decls and the symbol table. */
{
/* Enter a new lexical scope. Argument is always zero when called
from outside the front end. */
- void (*pushlevel) PARAMS ((int));
+ 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) PARAMS ((int, int, int));
+ tree (*poplevel) (int, int, int);
- /* Returns non-zero if we are in the global binding level. Ada
+ /* 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) PARAMS ((void));
+ 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) PARAMS ((tree));
+ void (*insert_block) (tree);
/* Set the BLOCK node for the current scope level. */
- void (*set_block) PARAMS ((tree));
+ 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
name. */
- tree (*pushdecl) PARAMS ((tree));
+ tree (*pushdecl) (tree);
/* Returns the chain of decls so far in the current scope level. */
- tree (*getdecls) PARAMS ((void));
+ tree (*getdecls) (void);
/* 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) PARAMS ((tree));
+ bool (*warn_unused_global) (tree);
+
+ /* Obtain a list of globals and do final output on them at end
+ of compilation */
+ void (*final_write_globals) (void);
+
+ /* Do necessary preparations before assemble_variable can proceed. */
+ void (*prepare_assemble_variable) (tree);
+
+ /* True if this decl may be called via a sibcall. */
+ bool (*ok_for_sibcall) (tree);
};
/* 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. */
+ size_t (*tree_size) (enum tree_code);
+
/* The first callback made to the front end, for simple
- initialization needed before any calls to decode_option. */
- void (*init_options) PARAMS ((void));
-
- /* Function called with an option vector as argument, to decode a
- single option (typically starting with -f or -W or +). It should
- return the number of command-line arguments it uses if it handles
- the option, or 0 and not complain if it does not recognise the
- option. If this function returns a negative number, then its
- absolute value is the number of command-line arguments used, but,
- in addition, no language-independent option processing should be
- done for this option. */
- int (*decode_option) PARAMS ((int, char **));
-
- /* Called when all command line options have been parsed. Should do
- any required consistency checks, modifications etc. Complex
- initialization should be left to the "init" callback, since GC
- and the identifier hashes are set up between now and then. */
- void (*post_options) PARAMS ((void));
-
- /* Called after post_options, to initialize the front end. The main
- input filename is passed, which may be NULL; the front end should
- return the original filename (e.g. foo.i -> foo.c). Return NULL
- to indicate a serious error of some sort; in that case no
- compilation is performed, and the finish hook is called
- immediately. */
- const char * (*init) PARAMS ((const char *));
+ 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);
+
+ /* 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
+ 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);
+
+ /* 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 when all command line options have been parsed to allow
+ further processing and initialization
+
+ Should return true to indicate that a compiler back-end is
+ not required, such as with the -E option.
+
+ If errorcount is nonzero after this call the compiler exits
+ immediately and the finish hook is not called. */
+ bool (*post_options) (const char **);
+
+ /* Called after post_options to initialize the front end. Return
+ false to indicate that no further compilation be performed, in
+ which case the finish hook is called immediately. */
+ bool (*init) (void);
/* Called at the end of compilation, as a finalizer. */
- void (*finish) PARAMS ((void));
+ void (*finish) (void);
- /* Parses the entire file. The argument is non-zero to cause bison
+ /* Parses the entire file. The argument is nonzero to cause bison
parsers to dump debugging information during parsing. */
- void (*parse_file) PARAMS ((int));
+ void (*parse_file) (int);
/* Called immediately after parsing to clear the binding stack. */
- void (*clear_binding_stack) PARAMS ((void));
+ void (*clear_binding_stack) (void);
/* Called to obtain the alias set to be used for an expression or type.
Returns -1 if the language does nothing special for it. */
- HOST_WIDE_INT (*get_alias_set) PARAMS ((tree));
+ HOST_WIDE_INT (*get_alias_set) (tree);
/* Called with an expression that is to be processed as a constant.
Returns either the same expression or a language-independent
constant equivalent to its input. */
- tree (*expand_constant) PARAMS ((tree));
+ tree (*expand_constant) (tree);
/* Called by expand_expr for language-specific tree codes.
Fourth argument is actually an enum expand_modifier. */
- rtx (*expand_expr) PARAMS ((tree, rtx, enum machine_mode, int));
+ rtx (*expand_expr) (tree, rtx, enum machine_mode, int);
/* Prepare expr to be an argument of a TRUTH_NOT_EXPR or other logical
operation.
The result should be an expression of boolean type (if not an
error_mark_node). */
- tree (*truthvalue_conversion) PARAMS ((tree));
-
- /* Possibly apply default attributes to a function (represented by
- a FUNCTION_DECL). */
- void (*insert_default_attributes) PARAMS ((tree));
+ tree (*truthvalue_conversion) (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
should not reexamine those pieces. This routine may recursively
call safe_from_p; it should always pass `0' as the TOP_P
parameter. */
- int (*safe_from_p) PARAMS ((rtx, tree));
+ int (*safe_from_p) (rtx, tree);
/* Function to finish handling an incomplete decl at the end of
compilation. Default hook is does nothing. */
- void (*finish_incomplete_decl) PARAMS ((tree));
+ 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) PARAMS ((tree));
+ 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) PARAMS ((tree));
+ bool (*mark_addressable) (tree);
/* Hook called by staticp for language-specific tree codes. */
- int (*staticp) PARAMS ((tree));
+ int (*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) PARAMS ((tree));
+ 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) PARAMS ((tree));
+ 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) PARAMS ((tree));
-
- /* Mark nodes held through the lang_specific hooks in the tree. */
- void (*mark_tree) PARAMS ((tree));
+ 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.
Otherwise, set it to the ERROR_MARK_NODE to ensure that the
assembler does not talk about it. */
- void (*set_decl_assembler_name) PARAMS ((tree));
+ 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 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) PARAMS ((void));
+ void (*print_statistics) (void);
/* Called by print_tree when there is a tree of class 'x' that it
doesn't know how to display. */
necessary. 1: and scope information. 2: and any other
information that might be interesting, such as function parameter
types in C++. */
- const char *(*decl_printable_name) PARAMS ((tree decl, int verbosity));
+ const char *(*decl_printable_name) (tree decl, int verbosity);
/* Called by report_error_function to print out function name. */
- void (*print_error_function) PARAMS ((struct diagnostic_context *,
- const char *));
+ void (*print_error_function) (struct diagnostic_context *, const char *);
+
+ /* 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) (tree);
+
+ /* Called from uninitialized_vars_warning to find out if a variable is
+ uninitialized based on DECL_INITIAL. */
+ bool (*decl_uninit) (tree);
/* Pointers to machine-independent attribute tables, for front ends
using attribs.c. If one is NULL, it is ignored. Respectively, a
struct lang_hooks_for_functions function;
struct lang_hooks_for_tree_inlining tree_inlining;
-
+
+ struct lang_hooks_for_callgraph callgraph;
+
struct lang_hooks_for_tree_dump tree_dump;
struct lang_hooks_for_decls decls;
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