1 /* Default language-specific hooks.
2 Copyright 2001 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"
31 #include "langhooks.h"
32 #include "langhooks-def.h"
34 /* Do nothing; in many cases the default hook. */
41 /* Do nothing (return the tree node passed). */
50 /* Do nothing; the default hook to decode an option. */
53 lhd_decode_option (argc
, argv
)
54 int argc ATTRIBUTE_UNUSED
;
55 char **argv ATTRIBUTE_UNUSED
;
60 /* Called from by print-tree.c. */
63 lhd_print_tree_nothing (file
, node
, indent
)
64 FILE *file ATTRIBUTE_UNUSED
;
65 tree node ATTRIBUTE_UNUSED
;
66 int indent ATTRIBUTE_UNUSED
;
70 /* Called from safe_from_p. */
73 lhd_safe_from_p (x
, exp
)
74 rtx x ATTRIBUTE_UNUSED
;
75 tree exp ATTRIBUTE_UNUSED
;
80 /* Called when -dy is given on the command line. */
83 lhd_set_yydebug (value
)
87 fprintf (stderr
, "warning: no yacc/bison-generated output to debug!\n");
90 /* Provide a default routine to clear the binding stack. This is used
91 by languages that don't need to do anything special. */
93 lhd_clear_binding_stack ()
95 while (! global_bindings_p ())
99 /* Provide a default routine for alias sets that always returns -1. This
100 is used by languages that don't need to do anything special. */
103 lhd_get_alias_set (t
)
104 tree t ATTRIBUTE_UNUSED
;
109 /* Provide a hook routine for alias sets that always returns 0. This is
110 used by languages that haven't deal with alias sets yet. */
113 hook_get_alias_set_0 (t
)
114 tree t ATTRIBUTE_UNUSED
;
119 /* lang_hooks.tree_inlining.walk_subtrees is called by walk_tree()
120 after handling common cases, but before walking code-specific
121 sub-trees. If this hook is overridden for a language, it should
122 handle language-specific tree codes, as well as language-specific
123 information associated to common tree codes. If a tree node is
124 completely handled within this function, it should set *SUBTREES to
125 0, so that generic handling isn't attempted. For language-specific
126 tree codes, generic handling would abort(), so make sure it is set
127 properly. Both SUBTREES and *SUBTREES is guaranteed to be non-zero
128 when the function is called. */
131 lhd_tree_inlining_walk_subtrees (tp
,subtrees
,func
,data
,htab
)
132 tree
*tp ATTRIBUTE_UNUSED
;
133 int *subtrees ATTRIBUTE_UNUSED
;
134 walk_tree_fn func ATTRIBUTE_UNUSED
;
135 void *data ATTRIBUTE_UNUSED
;
136 void *htab ATTRIBUTE_UNUSED
;
141 /* lang_hooks.tree_inlining.cannot_inline_tree_fn is called to
142 determine whether there are language-specific reasons for not
143 inlining a given function. */
146 lhd_tree_inlining_cannot_inline_tree_fn (fnp
)
147 tree
*fnp ATTRIBUTE_UNUSED
;
152 /* lang_hooks.tree_inlining.disregard_inline_limits is called to
153 determine whether a function should be considered for inlining even
154 if it would exceed inlining limits. */
157 lhd_tree_inlining_disregard_inline_limits (fn
)
158 tree fn ATTRIBUTE_UNUSED
;
163 /* lang_hooks.tree_inlining.add_pending_fn_decls is called before
164 starting to inline a function, to push any language-specific
165 functions that should not be inlined into the current function,
166 into VAFNP. PFN is the top of varray, and should be returned if no
167 functions are pushed into VAFNP. The top of the varray should be
171 lhd_tree_inlining_add_pending_fn_decls (vafnp
, pfn
)
172 void *vafnp ATTRIBUTE_UNUSED
;
178 /* lang_hooks.tree_inlining.tree_chain_matters_p indicates whether the
179 TREE_CHAIN of a language-specific tree node is relevant, i.e.,
180 whether it should be walked, copied and preserved across copies. */
183 lhd_tree_inlining_tree_chain_matters_p (t
)
184 tree t ATTRIBUTE_UNUSED
;
189 /* lang_hooks.tree_inlining.auto_var_in_fn_p is called to determine
190 whether VT is an automatic variable defined in function FT. */
193 lhd_tree_inlining_auto_var_in_fn_p (var
, fn
)
196 return (DECL_P (var
) && DECL_CONTEXT (var
) == fn
197 && (((TREE_CODE (var
) == VAR_DECL
|| TREE_CODE (var
) == PARM_DECL
)
198 && ! TREE_STATIC (var
))
199 || TREE_CODE (var
) == LABEL_DECL
200 || TREE_CODE (var
) == RESULT_DECL
));
203 /* lang_hooks.tree_inlining.copy_res_decl_for_inlining should return a
204 declaration for the result RES of function FN to be inlined into
205 CALLER. NDP points to an integer that should be set in case a new
206 declaration wasn't created (presumably because RES was of aggregate
207 type, such that a TARGET_EXPR is used for the result). TEXPS is a
208 pointer to a varray with the stack of TARGET_EXPRs seen while
209 inlining functions into caller; the top of TEXPS is supposed to
213 lhd_tree_inlining_copy_res_decl_for_inlining (res
, fn
, caller
,
215 tree res
, fn
, caller
;
216 void *dm ATTRIBUTE_UNUSED
;
217 int *ndp ATTRIBUTE_UNUSED
;
218 void *texps ATTRIBUTE_UNUSED
;
220 return copy_decl_for_inlining (res
, fn
, caller
);
223 /* lang_hooks.tree_inlining.anon_aggr_type_p determines whether T is a
224 type node representing an anonymous aggregate (union, struct, etc),
225 i.e., one whose members are in the same scope as the union itself. */
228 lhd_tree_inlining_anon_aggr_type_p (t
)
229 tree t ATTRIBUTE_UNUSED
;
234 /* lang_hooks.tree_dump.dump_tree: Dump language-specific parts of tree
235 nodes. Returns non-zero if it does not want the usual dumping of the
239 lhd_tree_dump_dump_tree (di
, t
)
240 void *di ATTRIBUTE_UNUSED
;
241 tree t ATTRIBUTE_UNUSED
;
246 /* lang_hooks.tree_dump.type_qual: Determine type qualifiers in a
247 language-specific way. */
250 lhd_tree_dump_type_quals (t
)
253 return TYPE_QUALS (t
);