1 /* Default language-specific hooks.
2 Copyright 2001, 2002 Free Software Foundation, Inc.
3 Contributed by Alexandre Oliva <aoliva@redhat.com>
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
27 #include "tree-inline.h"
29 #include "insn-config.h"
30 #include "integrate.h"
32 #include "langhooks.h"
33 #include "langhooks-def.h"
35 /* Do nothing; in many cases the default hook. */
46 tree t ATTRIBUTE_UNUSED
;
50 /* Do nothing (return the tree node passed). */
59 /* Do nothing; the default hook to decode an option. */
62 lhd_decode_option (argc
, argv
)
63 int argc ATTRIBUTE_UNUSED
;
64 char **argv ATTRIBUTE_UNUSED
;
69 /* Called from by print-tree.c. */
72 lhd_print_tree_nothing (file
, node
, indent
)
73 FILE *file ATTRIBUTE_UNUSED
;
74 tree node ATTRIBUTE_UNUSED
;
75 int indent ATTRIBUTE_UNUSED
;
79 /* Called from safe_from_p. */
82 lhd_safe_from_p (x
, exp
)
83 rtx x ATTRIBUTE_UNUSED
;
84 tree exp ATTRIBUTE_UNUSED
;
89 /* Called from staticp. */
93 tree exp ATTRIBUTE_UNUSED
;
98 /* Called when -dy is given on the command line. */
101 lhd_set_yydebug (value
)
105 fprintf (stderr
, "warning: no yacc/bison-generated output to debug!\n");
108 /* Provide a default routine to clear the binding stack. This is used
109 by languages that don't need to do anything special. */
111 lhd_clear_binding_stack ()
113 while (! (*lang_hooks
.decls
.global_bindings_p
) ())
117 /* Provide a default routine for alias sets that always returns -1. This
118 is used by languages that don't need to do anything special. */
121 lhd_get_alias_set (t
)
122 tree t ATTRIBUTE_UNUSED
;
127 /* Provide a hook routine for alias sets that always returns 0. This is
128 used by languages that haven't deal with alias sets yet. */
131 hook_get_alias_set_0 (t
)
132 tree t ATTRIBUTE_UNUSED
;
137 /* This is the default decl_printable_name function. */
140 lhd_decl_printable_name (decl
, verbosity
)
142 int verbosity ATTRIBUTE_UNUSED
;
144 return IDENTIFIER_POINTER (DECL_NAME (decl
));
147 /* lang_hooks.tree_inlining.walk_subtrees is called by walk_tree()
148 after handling common cases, but before walking code-specific
149 sub-trees. If this hook is overridden for a language, it should
150 handle language-specific tree codes, as well as language-specific
151 information associated to common tree codes. If a tree node is
152 completely handled within this function, it should set *SUBTREES to
153 0, so that generic handling isn't attempted. For language-specific
154 tree codes, generic handling would abort(), so make sure it is set
155 properly. Both SUBTREES and *SUBTREES is guaranteed to be non-zero
156 when the function is called. */
159 lhd_tree_inlining_walk_subtrees (tp
,subtrees
,func
,data
,htab
)
160 tree
*tp ATTRIBUTE_UNUSED
;
161 int *subtrees ATTRIBUTE_UNUSED
;
162 walk_tree_fn func ATTRIBUTE_UNUSED
;
163 void *data ATTRIBUTE_UNUSED
;
164 void *htab ATTRIBUTE_UNUSED
;
169 /* lang_hooks.tree_inlining.cannot_inline_tree_fn is called to
170 determine whether there are language-specific reasons for not
171 inlining a given function. */
174 lhd_tree_inlining_cannot_inline_tree_fn (fnp
)
178 && lookup_attribute ("always_inline", DECL_ATTRIBUTES (*fnp
)) == NULL
)
184 /* lang_hooks.tree_inlining.disregard_inline_limits is called to
185 determine whether a function should be considered for inlining even
186 if it would exceed inlining limits. */
189 lhd_tree_inlining_disregard_inline_limits (fn
)
192 if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn
)) != NULL
)
198 /* lang_hooks.tree_inlining.add_pending_fn_decls is called before
199 starting to inline a function, to push any language-specific
200 functions that should not be inlined into the current function,
201 into VAFNP. PFN is the top of varray, and should be returned if no
202 functions are pushed into VAFNP. The top of the varray should be
206 lhd_tree_inlining_add_pending_fn_decls (vafnp
, pfn
)
207 void *vafnp ATTRIBUTE_UNUSED
;
213 /* lang_hooks.tree_inlining.tree_chain_matters_p indicates whether the
214 TREE_CHAIN of a language-specific tree node is relevant, i.e.,
215 whether it should be walked, copied and preserved across copies. */
218 lhd_tree_inlining_tree_chain_matters_p (t
)
219 tree t ATTRIBUTE_UNUSED
;
224 /* lang_hooks.tree_inlining.auto_var_in_fn_p is called to determine
225 whether VT is an automatic variable defined in function FT. */
228 lhd_tree_inlining_auto_var_in_fn_p (var
, fn
)
231 return (DECL_P (var
) && DECL_CONTEXT (var
) == fn
232 && (((TREE_CODE (var
) == VAR_DECL
|| TREE_CODE (var
) == PARM_DECL
)
233 && ! TREE_STATIC (var
))
234 || TREE_CODE (var
) == LABEL_DECL
235 || TREE_CODE (var
) == RESULT_DECL
));
238 /* lang_hooks.tree_inlining.copy_res_decl_for_inlining should return a
239 declaration for the result RES of function FN to be inlined into
240 CALLER. NDP points to an integer that should be set in case a new
241 declaration wasn't created (presumably because RES was of aggregate
242 type, such that a TARGET_EXPR is used for the result). TEXPS is a
243 pointer to a varray with the stack of TARGET_EXPRs seen while
244 inlining functions into caller; the top of TEXPS is supposed to
248 lhd_tree_inlining_copy_res_decl_for_inlining (res
, fn
, caller
,
250 tree res
, fn
, caller
;
251 void *dm ATTRIBUTE_UNUSED
;
252 int *ndp ATTRIBUTE_UNUSED
;
253 void *texps ATTRIBUTE_UNUSED
;
255 return copy_decl_for_inlining (res
, fn
, caller
);
258 /* lang_hooks.tree_inlining.anon_aggr_type_p determines whether T is a
259 type node representing an anonymous aggregate (union, struct, etc),
260 i.e., one whose members are in the same scope as the union itself. */
263 lhd_tree_inlining_anon_aggr_type_p (t
)
264 tree t ATTRIBUTE_UNUSED
;
269 /* lang_hooks.tree_inlining.start_inlining and end_inlining perform any
270 language-specific bookkeeping necessary for processing
271 FN. start_inlining returns non-zero if inlining should proceed, zero if
274 For instance, the C++ version keeps track of template instantiations to
275 avoid infinite recursion. */
278 lhd_tree_inlining_start_inlining (fn
)
279 tree fn ATTRIBUTE_UNUSED
;
285 lhd_tree_inlining_end_inlining (fn
)
286 tree fn ATTRIBUTE_UNUSED
;
290 /* lang_hooks.tree_inlining.convert_parm_for_inlining performs any
291 language-specific conversion before assigning VALUE to PARM. */
294 lhd_tree_inlining_convert_parm_for_inlining (parm
, value
, fndecl
)
295 tree parm ATTRIBUTE_UNUSED
;
297 tree fndecl ATTRIBUTE_UNUSED
;
302 /* lang_hooks.tree_dump.dump_tree: Dump language-specific parts of tree
303 nodes. Returns non-zero if it does not want the usual dumping of the
307 lhd_tree_dump_dump_tree (di
, t
)
308 void *di ATTRIBUTE_UNUSED
;
309 tree t ATTRIBUTE_UNUSED
;
314 /* lang_hooks.tree_dump.type_qual: Determine type qualifiers in a
315 language-specific way. */
318 lhd_tree_dump_type_quals (t
)
321 return TYPE_QUALS (t
);