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freebsd-nq/contrib/gcc/langhooks-def.h
Pedro F. Giffuni 5bfc7db451 gcc: Add support for Apple's Block extension 
Block objects [1] are a C-level syntactic and runtime feature. They
are similar to standard C functions, but in addition to executable
code they may also contain variable bindings to automatic (stack)
or managed (heap) memory. A block can therefore maintain a set of
state (data) that it can use to impact behavior when executed.

This port is based on Apple's GCC 5646 with some bugfixes from
Apple GCC 5666.3. It has some small differences with the support
in clang, which remains the recommended compiler.

Perhaps the most notable difference is that in GCC that __block
is not actually a keyword, but a macro. There will be workaround
for this issue in a near future. Other issues can be consulted in
the clang documentation [2]

For better compatiblity with Apple's GCC and llvm-gcc some related
fixes and features from Apple have been included. Support for the
non-standard nested functions in GCC is now off by default.

No effort was made to update the ObjC support since FreeBSD doesn't
carry ObjC in the base system, but some of the code crept in and
was more difficult to remove than to adjust.

Reference:
[1]
https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/Blocks/Articles/00_Introduction.html
[2]
http://clang.llvm.org/compatibility.html#block-variable-initialization

Obtained from:	Apple GCC 4.2
MFC after:	3 weeks
2014-01-05 00:43:28 +00:00

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/* Default macros to initialize the lang_hooks data structure.
Copyright 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
Contributed by Alexandre Oliva <aoliva@redhat.com>
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)
any later version.
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 GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#ifndef GCC_LANG_HOOKS_DEF_H
#define GCC_LANG_HOOKS_DEF_H
#include "hooks.h"
struct diagnostic_context;
/* Provide a hook routine for alias sets that always returns 1. This is
used by languages that haven't deal with alias sets yet. */
extern HOST_WIDE_INT hook_get_alias_set_0 (tree);
/* Note to creators of new hooks:
The macros in this file should NOT be surrounded by a
#ifdef...#endif pair, since this file declares the defaults. Each
front end overrides any hooks it wishes to, in the file containing
its struct lang_hooks, AFTER including this file. */
/* See langhooks.h for the definition and documentation of each hook. */
extern void lhd_do_nothing (void);
extern void lhd_do_nothing_t (tree);
extern void lhd_do_nothing_i (int);
extern void lhd_do_nothing_f (struct function *);
extern bool lhd_post_options (const char **);
extern HOST_WIDE_INT lhd_get_alias_set (tree);
extern tree lhd_return_tree (tree);
extern tree lhd_return_null_tree_v (void);
extern tree lhd_return_null_tree (tree);
extern tree lhd_do_nothing_iii_return_null_tree (int, int, int);
extern int lhd_safe_from_p (rtx, tree);
extern tree lhd_staticp (tree);
extern void lhd_print_tree_nothing (FILE *, tree, int);
extern const char *lhd_decl_printable_name (tree, int);
extern const char *lhd_dwarf_name (tree, int);
extern int lhd_types_compatible_p (tree, tree);
extern rtx lhd_expand_expr (tree, rtx, enum machine_mode, int, rtx *);
extern int lhd_expand_decl (tree);
extern void lhd_print_error_function (struct diagnostic_context *,
const char *);
extern void lhd_set_decl_assembler_name (tree);
extern bool lhd_can_use_bit_fields_p (void);
extern bool lhd_warn_unused_global_decl (tree);
extern void lhd_incomplete_type_error (tree, tree);
extern tree lhd_type_promotes_to (tree);
extern void lhd_register_builtin_type (tree, const char *);
extern bool lhd_decl_ok_for_sibcall (tree);
extern const char *lhd_comdat_group (tree);
extern tree lhd_expr_size (tree);
extern size_t lhd_tree_size (enum tree_code);
extern HOST_WIDE_INT lhd_to_target_charset (HOST_WIDE_INT);
extern tree lhd_expr_to_decl (tree, bool *, bool *, bool *);
/* Declarations of default tree inlining hooks. */
extern tree lhd_tree_inlining_walk_subtrees (tree *, int *, walk_tree_fn,
void *, struct pointer_set_t*);
extern int lhd_tree_inlining_cannot_inline_tree_fn (tree *);
extern int lhd_tree_inlining_disregard_inline_limits (tree);
extern tree lhd_tree_inlining_add_pending_fn_decls (void *, tree);
extern int lhd_tree_inlining_auto_var_in_fn_p (tree, tree);
extern int lhd_tree_inlining_anon_aggr_type_p (tree);
extern int lhd_tree_inlining_start_inlining (tree);
extern void lhd_tree_inlining_end_inlining (tree);
extern tree lhd_tree_inlining_convert_parm_for_inlining (tree, tree, tree, int);
extern void lhd_initialize_diagnostics (struct diagnostic_context *);
extern tree lhd_callgraph_analyze_expr (tree *, int *, tree);
/* Declarations for tree gimplification hooks. */
extern int lhd_gimplify_expr (tree *, tree *, tree *);
extern enum omp_clause_default_kind lhd_omp_predetermined_sharing (tree);
extern tree lhd_omp_assignment (tree, tree, tree);
struct gimplify_omp_ctx;
extern void lhd_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *,
tree);
/* APPLE LOCAL begin 6353006 */
extern tree lhd_build_generic_block_struct_type (void);
/* APPLE LOCAL end 6353006 */
/* APPLE LOCAL radar 6386976 */
extern bool lhd_is_runtime_specific_type (tree);
#define LANG_HOOKS_NAME "GNU unknown"
#define LANG_HOOKS_IDENTIFIER_SIZE sizeof (struct lang_identifier)
#define LANG_HOOKS_INIT hook_bool_void_false
#define LANG_HOOKS_FINISH lhd_do_nothing
#define LANG_HOOKS_PARSE_FILE lhd_do_nothing_i
#define LANG_HOOKS_CLEAR_BINDING_STACK lhd_do_nothing
#define LANG_HOOKS_INIT_OPTIONS hook_uint_uint_constcharptrptr_0
#define LANG_HOOKS_INITIALIZE_DIAGNOSTICS lhd_initialize_diagnostics
#define LANG_HOOKS_HANDLE_OPTION hook_int_size_t_constcharptr_int_0
#define LANG_HOOKS_MISSING_ARGUMENT hook_bool_constcharptr_size_t_false
#define LANG_HOOKS_POST_OPTIONS lhd_post_options
#define LANG_HOOKS_GET_ALIAS_SET lhd_get_alias_set
#define LANG_HOOKS_EXPAND_CONSTANT lhd_return_tree
#define LANG_HOOKS_EXPAND_EXPR lhd_expand_expr
#define LANG_HOOKS_EXPAND_DECL lhd_expand_decl
#define LANG_HOOKS_SAFE_FROM_P lhd_safe_from_p
#define LANG_HOOKS_FINISH_INCOMPLETE_DECL lhd_do_nothing_t
#define LANG_HOOKS_STATICP lhd_staticp
#define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL lhd_do_nothing_t
#define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME lhd_set_decl_assembler_name
#define LANG_HOOKS_CAN_USE_BIT_FIELDS_P lhd_can_use_bit_fields_p
#define LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS false
#define LANG_HOOKS_NO_BODY_BLOCKS false
#define LANG_HOOKS_PRINT_STATISTICS lhd_do_nothing
#define LANG_HOOKS_PRINT_XNODE lhd_print_tree_nothing
#define LANG_HOOKS_PRINT_DECL lhd_print_tree_nothing
#define LANG_HOOKS_PRINT_TYPE lhd_print_tree_nothing
#define LANG_HOOKS_PRINT_IDENTIFIER lhd_print_tree_nothing
#define LANG_HOOKS_PRINT_ERROR_FUNCTION lhd_print_error_function
#define LANG_HOOKS_DECL_PRINTABLE_NAME lhd_decl_printable_name
#define LANG_HOOKS_DWARF_NAME lhd_dwarf_name
#define LANG_HOOKS_GET_CALLEE_FNDECL lhd_return_null_tree
#define LANG_HOOKS_EXPR_SIZE lhd_expr_size
#define LANG_HOOKS_TREE_SIZE lhd_tree_size
#define LANG_HOOKS_TYPES_COMPATIBLE_P lhd_types_compatible_p
#define LANG_HOOKS_BUILTIN_FUNCTION builtin_function
#define LANG_HOOKS_EXPR_TO_DECL lhd_expr_to_decl
#define LANG_HOOKS_TO_TARGET_CHARSET lhd_to_target_charset
#define LANG_HOOKS_INIT_TS lhd_do_nothing
#define LANG_HOOKS_FUNCTION_INIT lhd_do_nothing_f
#define LANG_HOOKS_FUNCTION_FINAL lhd_do_nothing_f
#define LANG_HOOKS_FUNCTION_ENTER_NESTED lhd_do_nothing_f
#define LANG_HOOKS_FUNCTION_LEAVE_NESTED lhd_do_nothing_f
#define LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P hook_bool_tree_true
/* APPLE LOCAL begin radar 6353006 */
#define LANG_HOOKS_BUILD_GENERIC_BLOCK_STRUCT_TYPE \
lhd_build_generic_block_struct_type
/* APPLE LOCAL end radar 6353006 */
/* Attribute hooks. */
#define LANG_HOOKS_ATTRIBUTE_TABLE NULL
#define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE NULL
#define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE NULL
/* Tree inlining hooks. */
#define LANG_HOOKS_TREE_INLINING_WALK_SUBTREES lhd_tree_inlining_walk_subtrees
#define LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN \
lhd_tree_inlining_cannot_inline_tree_fn
#define LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS \
lhd_tree_inlining_disregard_inline_limits
#define LANG_HOOKS_TREE_INLINING_ADD_PENDING_FN_DECLS \
lhd_tree_inlining_add_pending_fn_decls
#define LANG_HOOKS_TREE_INLINING_AUTO_VAR_IN_FN_P \
lhd_tree_inlining_auto_var_in_fn_p
#define LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P \
lhd_tree_inlining_anon_aggr_type_p
#define LANG_HOOKS_TREE_INLINING_VAR_MOD_TYPE_P \
hook_bool_tree_tree_false
#define LANG_HOOKS_TREE_INLINING_START_INLINING \
lhd_tree_inlining_start_inlining
#define LANG_HOOKS_TREE_INLINING_END_INLINING \
lhd_tree_inlining_end_inlining
#define LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING \
lhd_tree_inlining_convert_parm_for_inlining
#define LANG_HOOKS_TREE_INLINING_INITIALIZER { \
LANG_HOOKS_TREE_INLINING_WALK_SUBTREES, \
LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN, \
LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS, \
LANG_HOOKS_TREE_INLINING_ADD_PENDING_FN_DECLS, \
LANG_HOOKS_TREE_INLINING_AUTO_VAR_IN_FN_P, \
LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P, \
LANG_HOOKS_TREE_INLINING_VAR_MOD_TYPE_P, \
LANG_HOOKS_TREE_INLINING_START_INLINING, \
LANG_HOOKS_TREE_INLINING_END_INLINING, \
LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING \
}
#define LANG_HOOKS_CALLGRAPH_ANALYZE_EXPR lhd_callgraph_analyze_expr
#define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION NULL
#define LANG_HOOKS_CALLGRAPH_INITIALIZER { \
LANG_HOOKS_CALLGRAPH_ANALYZE_EXPR, \
LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION, \
}
#define LANG_HOOKS_FUNCTION_INITIALIZER { \
LANG_HOOKS_FUNCTION_INIT, \
LANG_HOOKS_FUNCTION_FINAL, \
LANG_HOOKS_FUNCTION_ENTER_NESTED, \
LANG_HOOKS_FUNCTION_LEAVE_NESTED, \
LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P \
}
/* Hooks for tree gimplification. */
#define LANG_HOOKS_GIMPLIFY_EXPR lhd_gimplify_expr
#define LANG_HOOKS_FOLD_OBJ_TYPE_REF NULL
/* Tree dump hooks. */
extern bool lhd_tree_dump_dump_tree (void *, tree);
extern int lhd_tree_dump_type_quals (tree);
extern tree lhd_make_node (enum tree_code);
#define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN lhd_tree_dump_dump_tree
#define LANG_HOOKS_TREE_DUMP_TYPE_QUALS_FN lhd_tree_dump_type_quals
#define LANG_HOOKS_TREE_DUMP_INITIALIZER { \
LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN, \
LANG_HOOKS_TREE_DUMP_TYPE_QUALS_FN \
}
/* Types hooks. There are no reasonable defaults for most of them,
so we create a compile-time error instead. */
#define LANG_HOOKS_MAKE_TYPE lhd_make_node
#define LANG_HOOKS_INCOMPLETE_TYPE_ERROR lhd_incomplete_type_error
#define LANG_HOOKS_GENERIC_TYPE_P hook_bool_tree_false
#define LANG_HOOKS_TYPE_PROMOTES_TO lhd_type_promotes_to
#define LANG_HOOKS_REGISTER_BUILTIN_TYPE lhd_register_builtin_type
#define LANG_HOOKS_TYPE_MAX_SIZE lhd_return_null_tree
#define LANG_HOOKS_OMP_FIRSTPRIVATIZE_TYPE_SIZES \
lhd_omp_firstprivatize_type_sizes
/* APPLE LOCAL radar 6386976 */
#define LANG_HOOKS_IS_RUNTIME_SPECIFIC_TYPE lhd_is_runtime_specific_type
#define LANG_HOOKS_HASH_TYPES true
#define LANG_HOOKS_FOR_TYPES_INITIALIZER { \
LANG_HOOKS_MAKE_TYPE, \
LANG_HOOKS_TYPE_FOR_MODE, \
LANG_HOOKS_TYPE_FOR_SIZE, \
LANG_HOOKS_UNSIGNED_TYPE, \
LANG_HOOKS_SIGNED_TYPE, \
LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE, \
LANG_HOOKS_GENERIC_TYPE_P, \
LANG_HOOKS_TYPE_PROMOTES_TO, \
LANG_HOOKS_REGISTER_BUILTIN_TYPE, \
LANG_HOOKS_INCOMPLETE_TYPE_ERROR, \
LANG_HOOKS_TYPE_MAX_SIZE, \
LANG_HOOKS_OMP_FIRSTPRIVATIZE_TYPE_SIZES, \
/* APPLE LOCAL radar 6386976 */ \
LANG_HOOKS_IS_RUNTIME_SPECIFIC_TYPE, \
LANG_HOOKS_HASH_TYPES \
}
/* Declaration hooks. */
#define LANG_HOOKS_GLOBAL_BINDINGS_P global_bindings_p
#define LANG_HOOKS_INSERT_BLOCK insert_block
#define LANG_HOOKS_PUSHDECL pushdecl
#define LANG_HOOKS_GETDECLS getdecls
#define LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL lhd_warn_unused_global_decl
#define LANG_HOOKS_WRITE_GLOBALS write_global_declarations
#define LANG_HOOKS_PREPARE_ASSEMBLE_VARIABLE NULL
#define LANG_HOOKS_DECL_OK_FOR_SIBCALL lhd_decl_ok_for_sibcall
#define LANG_HOOKS_COMDAT_GROUP lhd_comdat_group
#define LANG_HOOKS_OMP_PRIVATIZE_BY_REFERENCE hook_bool_tree_false
#define LANG_HOOKS_OMP_PREDETERMINED_SHARING lhd_omp_predetermined_sharing
#define LANG_HOOKS_OMP_DISREGARD_VALUE_EXPR hook_bool_tree_bool_false
#define LANG_HOOKS_OMP_PRIVATE_DEBUG_CLAUSE hook_bool_tree_bool_false
#define LANG_HOOKS_OMP_CLAUSE_DEFAULT_CTOR hook_tree_tree_tree_null
#define LANG_HOOKS_OMP_CLAUSE_COPY_CTOR lhd_omp_assignment
#define LANG_HOOKS_OMP_CLAUSE_ASSIGN_OP lhd_omp_assignment
#define LANG_HOOKS_OMP_CLAUSE_DTOR hook_tree_tree_tree_null
#define LANG_HOOKS_DECLS { \
LANG_HOOKS_GLOBAL_BINDINGS_P, \
LANG_HOOKS_INSERT_BLOCK, \
LANG_HOOKS_PUSHDECL, \
LANG_HOOKS_GETDECLS, \
LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL, \
LANG_HOOKS_WRITE_GLOBALS, \
LANG_HOOKS_PREPARE_ASSEMBLE_VARIABLE, \
LANG_HOOKS_DECL_OK_FOR_SIBCALL, \
LANG_HOOKS_COMDAT_GROUP, \
LANG_HOOKS_OMP_PRIVATIZE_BY_REFERENCE, \
LANG_HOOKS_OMP_PREDETERMINED_SHARING, \
LANG_HOOKS_OMP_DISREGARD_VALUE_EXPR, \
LANG_HOOKS_OMP_PRIVATE_DEBUG_CLAUSE, \
LANG_HOOKS_OMP_CLAUSE_DEFAULT_CTOR, \
LANG_HOOKS_OMP_CLAUSE_COPY_CTOR, \
LANG_HOOKS_OMP_CLAUSE_ASSIGN_OP, \
LANG_HOOKS_OMP_CLAUSE_DTOR \
}
/* The whole thing. The structure is defined in langhooks.h. */
#define LANG_HOOKS_INITIALIZER { \
LANG_HOOKS_NAME, \
LANG_HOOKS_IDENTIFIER_SIZE, \
LANG_HOOKS_TREE_SIZE, \
LANG_HOOKS_INIT_OPTIONS, \
LANG_HOOKS_INITIALIZE_DIAGNOSTICS, \
LANG_HOOKS_HANDLE_OPTION, \
LANG_HOOKS_MISSING_ARGUMENT, \
LANG_HOOKS_POST_OPTIONS, \
LANG_HOOKS_INIT, \
LANG_HOOKS_FINISH, \
LANG_HOOKS_PARSE_FILE, \
LANG_HOOKS_CLEAR_BINDING_STACK, \
LANG_HOOKS_GET_ALIAS_SET, \
LANG_HOOKS_EXPAND_CONSTANT, \
LANG_HOOKS_EXPAND_EXPR, \
LANG_HOOKS_EXPAND_DECL, \
LANG_HOOKS_SAFE_FROM_P, \
LANG_HOOKS_FINISH_INCOMPLETE_DECL, \
LANG_HOOKS_MARK_ADDRESSABLE, \
LANG_HOOKS_STATICP, \
LANG_HOOKS_DUP_LANG_SPECIFIC_DECL, \
LANG_HOOKS_SET_DECL_ASSEMBLER_NAME, \
LANG_HOOKS_CAN_USE_BIT_FIELDS_P, \
LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS, \
LANG_HOOKS_NO_BODY_BLOCKS, \
LANG_HOOKS_PRINT_STATISTICS, \
LANG_HOOKS_PRINT_XNODE, \
LANG_HOOKS_PRINT_DECL, \
LANG_HOOKS_PRINT_TYPE, \
LANG_HOOKS_PRINT_IDENTIFIER, \
LANG_HOOKS_DECL_PRINTABLE_NAME, \
LANG_HOOKS_DWARF_NAME, \
LANG_HOOKS_TYPES_COMPATIBLE_P, \
LANG_HOOKS_GET_CALLEE_FNDECL, \
LANG_HOOKS_PRINT_ERROR_FUNCTION, \
LANG_HOOKS_EXPR_SIZE, \
LANG_HOOKS_TO_TARGET_CHARSET, \
LANG_HOOKS_ATTRIBUTE_TABLE, \
LANG_HOOKS_COMMON_ATTRIBUTE_TABLE, \
LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE, \
LANG_HOOKS_FUNCTION_INITIALIZER, \
LANG_HOOKS_TREE_INLINING_INITIALIZER, \
LANG_HOOKS_CALLGRAPH_INITIALIZER, \
LANG_HOOKS_TREE_DUMP_INITIALIZER, \
LANG_HOOKS_DECLS, \
LANG_HOOKS_FOR_TYPES_INITIALIZER, \
LANG_HOOKS_GIMPLIFY_EXPR, \
LANG_HOOKS_FOLD_OBJ_TYPE_REF, \
LANG_HOOKS_BUILTIN_FUNCTION, \
LANG_HOOKS_INIT_TS, \
LANG_HOOKS_EXPR_TO_DECL, \
/* APPLE LOCAL radar 6353006 */ \
LANG_HOOKS_BUILD_GENERIC_BLOCK_STRUCT_TYPE, \
}
#endif /* GCC_LANG_HOOKS_DEF_H */
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