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 (return NULL_TREE). */
62 lhd_return_null_tree (t)
63 tree t ATTRIBUTE_UNUSED;
68 /* Do nothing; the default hook to decode an option. */
71 lhd_decode_option (argc, argv)
72 int argc ATTRIBUTE_UNUSED;
73 char **argv ATTRIBUTE_UNUSED;
78 /* Called from by print-tree.c. */
81 lhd_print_tree_nothing (file, node, indent)
82 FILE *file ATTRIBUTE_UNUSED;
83 tree node ATTRIBUTE_UNUSED;
84 int indent ATTRIBUTE_UNUSED;
88 /* Called from safe_from_p. */
91 lhd_safe_from_p (x, exp)
92 rtx x ATTRIBUTE_UNUSED;
93 tree exp ATTRIBUTE_UNUSED;
98 /* Called from unsafe_for_reeval. */
101 lhd_unsafe_for_reeval (t)
102 tree t ATTRIBUTE_UNUSED;
107 /* Called from staticp. */
111 tree exp ATTRIBUTE_UNUSED;
116 /* Called when -dy is given on the command line. */
119 lhd_set_yydebug (value)
123 fprintf (stderr, "warning: no yacc/bison-generated output to debug!\n");
126 /* Provide a default routine to clear the binding stack. This is used
127 by languages that don't need to do anything special. */
129 lhd_clear_binding_stack ()
131 while (! (*lang_hooks.decls.global_bindings_p) ())
135 /* Provide a default routine for alias sets that always returns -1. This
136 is used by languages that don't need to do anything special. */
139 lhd_get_alias_set (t)
140 tree t ATTRIBUTE_UNUSED;
145 /* Provide a hook routine for alias sets that always returns 0. This is
146 used by languages that haven't deal with alias sets yet. */
149 hook_get_alias_set_0 (t)
150 tree t ATTRIBUTE_UNUSED;
155 /* This is the default expand_expr function. */
158 lhd_expand_expr (t, r, mm, em)
159 tree t ATTRIBUTE_UNUSED;
160 rtx r ATTRIBUTE_UNUSED;
161 enum machine_mode mm ATTRIBUTE_UNUSED;
162 int em ATTRIBUTE_UNUSED;
167 /* This is the default decl_printable_name function. */
170 lhd_decl_printable_name (decl, verbosity)
172 int verbosity ATTRIBUTE_UNUSED;
174 return IDENTIFIER_POINTER (DECL_NAME (decl));
177 /* lang_hooks.tree_inlining.walk_subtrees is called by walk_tree()
178 after handling common cases, but before walking code-specific
179 sub-trees. If this hook is overridden for a language, it should
180 handle language-specific tree codes, as well as language-specific
181 information associated to common tree codes. If a tree node is
182 completely handled within this function, it should set *SUBTREES to
183 0, so that generic handling isn't attempted. For language-specific
184 tree codes, generic handling would abort(), so make sure it is set
185 properly. Both SUBTREES and *SUBTREES is guaranteed to be non-zero
186 when the function is called. */
189 lhd_tree_inlining_walk_subtrees (tp,subtrees,func,data,htab)
190 tree *tp ATTRIBUTE_UNUSED;
191 int *subtrees ATTRIBUTE_UNUSED;
192 walk_tree_fn func ATTRIBUTE_UNUSED;
193 void *data ATTRIBUTE_UNUSED;
194 void *htab ATTRIBUTE_UNUSED;
199 /* lang_hooks.tree_inlining.cannot_inline_tree_fn is called to
200 determine whether there are language-specific reasons for not
201 inlining a given function. */
204 lhd_tree_inlining_cannot_inline_tree_fn (fnp)
207 if (flag_really_no_inline
208 && lookup_attribute ("always_inline", DECL_ATTRIBUTES (*fnp)) == NULL)
214 /* lang_hooks.tree_inlining.disregard_inline_limits is called to
215 determine whether a function should be considered for inlining even
216 if it would exceed inlining limits. */
219 lhd_tree_inlining_disregard_inline_limits (fn)
222 if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) != NULL)
228 /* lang_hooks.tree_inlining.add_pending_fn_decls is called before
229 starting to inline a function, to push any language-specific
230 functions that should not be inlined into the current function,
231 into VAFNP. PFN is the top of varray, and should be returned if no
232 functions are pushed into VAFNP. The top of the varray should be
236 lhd_tree_inlining_add_pending_fn_decls (vafnp, pfn)
237 void *vafnp ATTRIBUTE_UNUSED;
243 /* lang_hooks.tree_inlining.tree_chain_matters_p indicates whether the
244 TREE_CHAIN of a language-specific tree node is relevant, i.e.,
245 whether it should be walked, copied and preserved across copies. */
248 lhd_tree_inlining_tree_chain_matters_p (t)
249 tree t ATTRIBUTE_UNUSED;
254 /* lang_hooks.tree_inlining.auto_var_in_fn_p is called to determine
255 whether VT is an automatic variable defined in function FT. */
258 lhd_tree_inlining_auto_var_in_fn_p (var, fn)
261 return (DECL_P (var) && DECL_CONTEXT (var) == fn
262 && (((TREE_CODE (var) == VAR_DECL || TREE_CODE (var) == PARM_DECL)
263 && ! TREE_STATIC (var))
264 || TREE_CODE (var) == LABEL_DECL
265 || TREE_CODE (var) == RESULT_DECL));
268 /* lang_hooks.tree_inlining.copy_res_decl_for_inlining should return a
269 declaration for the result RES of function FN to be inlined into
270 CALLER. NDP points to an integer that should be set in case a new
271 declaration wasn't created (presumably because RES was of aggregate
272 type, such that a TARGET_EXPR is used for the result). TEXPS is a
273 pointer to a varray with the stack of TARGET_EXPRs seen while
274 inlining functions into caller; the top of TEXPS is supposed to
278 lhd_tree_inlining_copy_res_decl_for_inlining (res, fn, caller,
280 tree res, fn, caller;
281 void *dm ATTRIBUTE_UNUSED;
282 int *ndp ATTRIBUTE_UNUSED;
283 void *texps ATTRIBUTE_UNUSED;
285 return copy_decl_for_inlining (res, fn, caller);
288 /* lang_hooks.tree_inlining.anon_aggr_type_p determines whether T is a
289 type node representing an anonymous aggregate (union, struct, etc),
290 i.e., one whose members are in the same scope as the union itself. */
293 lhd_tree_inlining_anon_aggr_type_p (t)
294 tree t ATTRIBUTE_UNUSED;
299 /* lang_hooks.tree_inlining.start_inlining and end_inlining perform any
300 language-specific bookkeeping necessary for processing
301 FN. start_inlining returns non-zero if inlining should proceed, zero if
304 For instance, the C++ version keeps track of template instantiations to
305 avoid infinite recursion. */
308 lhd_tree_inlining_start_inlining (fn)
309 tree fn ATTRIBUTE_UNUSED;
315 lhd_tree_inlining_end_inlining (fn)
316 tree fn ATTRIBUTE_UNUSED;
320 /* lang_hooks.tree_inlining.convert_parm_for_inlining performs any
321 language-specific conversion before assigning VALUE to PARM. */
324 lhd_tree_inlining_convert_parm_for_inlining (parm, value, fndecl)
325 tree parm ATTRIBUTE_UNUSED;
327 tree fndecl ATTRIBUTE_UNUSED;
332 /* lang_hooks.tree_dump.dump_tree: Dump language-specific parts of tree
333 nodes. Returns non-zero if it does not want the usual dumping of the
337 lhd_tree_dump_dump_tree (di, t)
338 void *di ATTRIBUTE_UNUSED;
339 tree t ATTRIBUTE_UNUSED;
344 /* lang_hooks.tree_dump.type_qual: Determine type qualifiers in a
345 language-specific way. */
348 lhd_tree_dump_type_quals (t)
351 return TYPE_QUALS (t);