Daily bump.

[pf3gnuchains/gcc-fork.git] / gcc / langhooks.h

diff --git a/gcc/langhooks.h b/gcc/langhooks.h
index ce6b7a6..752ad99 100644 (file)
--- a/gcc/langhooks.h
+++ b/gcc/langhooks.h
@@ -1,11 +1,12 @@
 /* The lang_hooks data structure.
 /* The lang_hooks data structure.

-   Copyright 2001, 2002, 2003 Free Software Foundation, Inc.
+   Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+   Free Software Foundation, Inc.

 
 This file is part of GCC.
 
 GCC is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 
 This file is part of GCC.
 
 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)
+the Free Software Foundation; either version 3, or (at your option)

 any later version.
 
 GCC is distributed in the hope that it will be useful,
 any later version.
 
 GCC is distributed in the hope that it will be useful,


@@ -14,9 +15,8 @@ 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
 GNU General Public License for more details.
 
 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.  */
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */

 
 #ifndef GCC_LANG_HOOKS_H
 #define GCC_LANG_HOOKS_H
 
 #ifndef GCC_LANG_HOOKS_H
 #define GCC_LANG_HOOKS_H


@@ -24,71 +24,34 @@ Boston, MA 02111-1307, USA.  */
 /* This file should be #include-d after tree.h.  */
 
 struct diagnostic_context;
 /* This file should be #include-d after tree.h.  */
 
 struct diagnostic_context;

+struct diagnostic_info;
+
+struct gimplify_omp_ctx;
+
+struct array_descr_info;

 
 /* A print hook for print_tree ().  */
 typedef void (*lang_print_tree_hook) (FILE *, tree, int indent);
 
 
 /* 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.  */
 
 struct lang_hooks_for_tree_inlining
 {
 /* The following hooks are documented in langhooks.c.  Must not be
    NULL.  */
 
 struct lang_hooks_for_tree_inlining
 {

-  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);
-  int (*estimate_num_insns) (tree);
+  bool (*var_mod_type_p) (tree, tree);

 };
 
 struct lang_hooks_for_callgraph
 {
   /* The node passed is a language-specific tree node.  If its contents
      are relevant to use of other declarations, mark them.  */
 };
 
 struct lang_hooks_for_callgraph
 {
   /* 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);
-};
+  tree (*analyze_expr) (tree *, int *);

 
 

-/* 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 *);
-};
-
-/* Lang hooks for rtl code generation.  */
-struct lang_hooks_for_rtl_expansion
-{
-  /* Called after expand_function_start, but before expanding the body.  */
-  void (*start) (void);
-
-  /* Called to expand each statement.  */
-  void (*stmt) (tree);
-
-  /* Called after expanding the body but before expand_function_end.  */
-  void (*end) (void);
+  /* Emit thunks associated to function.  */
+  void (*emit_associated_thunks) (tree);

 };
 
 /* The following hooks are used by tree-dump.c.  */
 };
 
 /* The following hooks are used by tree-dump.c.  */


@@ -100,7 +63,7 @@ struct lang_hooks_for_tree_dump
   bool (*dump_tree) (void *, tree);
 
   /* Determine type qualifiers in a language-specific way.  */
   bool (*dump_tree) (void *, tree);
 
   /* Determine type qualifiers in a language-specific way.  */

-  int (*type_quals) (tree);
+  int (*type_quals) (const_tree);

 };
 
 /* Hooks related to types.  */
 };
 
 /* Hooks related to types.  */


@@ -111,6 +74,11 @@ struct lang_hooks_for_types
      language-specific processing is required.  */
   tree (*make_type) (enum tree_code);
 
      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);
   /* Given MODE and UNSIGNEDP, return a suitable type-tree with that
      mode.  */
   tree (*type_for_mode) (enum machine_mode, int);


@@ -119,22 +87,14 @@ struct lang_hooks_for_types
      integer type with at least that precision.  */
   tree (*type_for_size) (unsigned, int);
 
      integer type with at least that precision.  */
   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) (tree);
-
-  /* Given an integer type T, return a type like T but signed.
-     If T is signed, the value is T.  */
-  tree (*signed_type) (tree);
-
-  /* Return a type the same as TYPE except unsigned or signed
-     according to UNSIGNEDP.  */
-  tree (*signed_or_unsigned_type) (int, tree);
+  /* True if the type is an instantiation of a generic type,
+     e.g. C++ template implicit specializations.  */
+  bool (*generic_p) (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
 
   /* 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
   tree (*type_promotes_to) (tree);
 
   /* Register TYPE as a builtin type with the indicated NAME.  The


@@ -150,36 +110,46 @@ struct lang_hooks_for_types
      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.  */
      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);
+  void (*incomplete_type_error) (const_tree value, const_tree type);
+
+  /* Called from assign_temp to return the maximum size, if there is one,
+     for a type.  */
+  tree (*max_size) (const_tree);
+
+  /* Register language specific type size variables as potentially OpenMP
+     firstprivate variables.  */
+  void (*omp_firstprivatize_type_sizes) (struct gimplify_omp_ctx *, tree);
+
+  /* Return TRUE if TYPE1 and TYPE2 are identical for type hashing purposes.
+     Called only after doing all language independent checks.
+     At present, this function is only called when both TYPE1 and TYPE2 are
+     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 *);
+
+  /* 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
 {
 };
 
 /* 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);
 
   /* 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);
 

-  /* 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);
-
-  /* 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
   /* 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


@@ -189,22 +159,65 @@ struct lang_hooks_for_decls
   /* Returns the chain of decls so far in the current scope level.  */
   tree (*getdecls) (void);
 
   /* Returns the chain of decls so far in the current scope level.  */
   tree (*getdecls) (void);
 

-  /* Returns a chain of TYPE_DECLs for built-in types.  */
-  tree (*builtin_type_decls) (void);
-

   /* Returns true when we should warn for an unused global DECL.
      We will already have checked that it has static binding.  */
   /* 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) (tree);
+  bool (*warn_unused_global) (const_tree);

 
   /* Obtain a list of globals and do final output on them at end
      of compilation */
   void (*final_write_globals) (void);
 
 
   /* 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.  */
   /* True if this decl may be called via a sibcall.  */

-  bool (*ok_for_sibcall) (tree);
+  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);
+
+  /* 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);
+
+  /* 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.  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);
+
+  /* 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);
+
+  /* Do language specific checking on an implicitly determined clause.  */
+  void (*omp_finish_clause) (tree clause);

 };
 
 /* Language-specific hooks.  See langhooks-def.h for defaults.  */
 };
 
 /* Language-specific hooks.  See langhooks-def.h for defaults.  */


@@ -218,9 +231,10 @@ struct lang_hooks
      identifier nodes long enough for the language-specific slots.  */
   size_t identifier_size;
 
      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
   size_t (*tree_size) (enum tree_code);
 
   /* The first callback made to the front end, for simple


@@ -269,74 +283,33 @@ struct lang_hooks
      parsers to dump debugging information during parsing.  */
   void (*parse_file) (int);
 
      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.  */
 
   /* 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) (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) (tree);
+  alias_set_type (*get_alias_set) (tree);

 
   /* Called by expand_expr for language-specific tree codes.
      Fourth argument is actually an enum expand_modifier.  */
 
   /* 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.
-
-     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);
-
-  /* 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
-     recursively explore the TREE_OPERANDs of an expression, this hook
-     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) (rtx, tree);
+  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);
 
 
   /* Function to finish handling an incomplete decl at the end of
      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.  */
   /* 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);
 
 
   /* 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.
   /* 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.


@@ -344,13 +317,6 @@ struct lang_hooks
      assembler does not talk about it.  */
   void (*set_decl_assembler_name) (tree);
 
      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 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.  */
   /* 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.  */


@@ -360,12 +326,12 @@ struct lang_hooks
      this hook.  It should output to stderr.  */
   void (*print_statistics) (void);
 
      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;
 
   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;
   lang_print_tree_hook print_decl;
   lang_print_tree_hook print_type;
   lang_print_tree_hook print_identifier;


@@ -378,21 +344,34 @@ struct lang_hooks
      types in C++.  */
   const char *(*decl_printable_name) (tree decl, int verbosity);
 
      types in C++.  */
   const char *(*decl_printable_name) (tree decl, int verbosity);
 

-  /* Given a CALL_EXPR, return a function decl that is its target.  */
-  tree (*lang_get_callee_fndecl) (tree);
+  /* 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);

 
   /* Called by report_error_function to print out function name.  */
 
   /* Called by report_error_function to print out function name.  */

-  void (*print_error_function) (struct diagnostic_context *, const char *);
+  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.  */
 
   /* 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);
+  tree (*expr_size) (const_tree);

 
 

-  /* Called from uninitialized_vars_warning to find out if a variable is
-     uninitialized based on DECL_INITIAL.  */
-  bool (*decl_uninit) (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
 
   /* Pointers to machine-independent attribute tables, for front ends
      using attribs.c.  If one is NULL, it is ignored.  Respectively, a


@@ -403,9 +382,6 @@ struct lang_hooks
   const struct attribute_spec *common_attribute_table;
   const struct attribute_spec *format_attribute_table;
 
   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_tree_inlining tree_inlining;
 
   struct lang_hooks_for_callgraph callgraph;


@@ -416,7 +392,32 @@ struct lang_hooks
 
   struct lang_hooks_for_types types;
 
 
   struct lang_hooks_for_types types;
 

-  struct lang_hooks_for_rtl_expansion rtl_expand;
+  /* 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);
+
+  /* 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 or *SE
+     if in the process TREE_CONSTANT or TREE_SIDE_EFFECTS need updating.  */
+  tree (*expr_to_decl) (tree expr, bool *tc, bool *se);

 
   /* Whenever you add entries here, make sure you adjust langhooks-def.h
      and langhooks.c accordingly.  */
 
   /* Whenever you add entries here, make sure you adjust langhooks-def.h
      and langhooks.c accordingly.  */


@@ -424,5 +425,15 @@ struct lang_hooks
 
 /* Each front end provides its own.  */
 extern const struct lang_hooks lang_hooks;
 
 /* 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);
+
+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 */
 
 #endif /* GCC_LANG_HOOKS_H */