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; the default hook to decode an option. */
44 lhd_decode_option (argc, argv)
45 int argc ATTRIBUTE_UNUSED;
46 char **argv ATTRIBUTE_UNUSED;
51 /* Called from by print-tree.c. */
54 lhd_print_tree_nothing (file, node, indent)
55 FILE *file ATTRIBUTE_UNUSED;
56 tree node ATTRIBUTE_UNUSED;
57 int indent ATTRIBUTE_UNUSED;
61 /* Called when -dy is given on the command line. */
64 lhd_set_yydebug (value)
68 fprintf (stderr, "warning: no yacc/bison-generated output to debug!\n");
71 /* Provide a default routine to clear the binding stack. This is used
72 by languages that don't need to do anything special. */
74 lhd_clear_binding_stack ()
76 while (! global_bindings_p ())
80 /* Provide a default routine for alias sets that always returns -1. This
81 is used by languages that don't need to do anything special. */
85 tree t ATTRIBUTE_UNUSED;
90 /* Provide a hook routine for alias sets that always returns 0. This is
91 used by languages that haven't deal with alias sets yet. */
94 hook_get_alias_set_0 (t)
95 tree t ATTRIBUTE_UNUSED;
100 /* lang_hooks.tree_inlining.walk_subtrees is called by walk_tree()
101 after handling common cases, but before walking code-specific
102 sub-trees. If this hook is overridden for a language, it should
103 handle language-specific tree codes, as well as language-specific
104 information associated to common tree codes. If a tree node is
105 completely handled within this function, it should set *SUBTREES to
106 0, so that generic handling isn't attempted. For language-specific
107 tree codes, generic handling would abort(), so make sure it is set
108 properly. Both SUBTREES and *SUBTREES is guaranteed to be non-zero
109 when the function is called. */
112 lhd_tree_inlining_walk_subtrees (tp,subtrees,func,data,htab)
113 tree *tp ATTRIBUTE_UNUSED;
114 int *subtrees ATTRIBUTE_UNUSED;
115 walk_tree_fn func ATTRIBUTE_UNUSED;
116 void *data ATTRIBUTE_UNUSED;
117 void *htab ATTRIBUTE_UNUSED;
122 /* lang_hooks.tree_inlining.cannot_inline_tree_fn is called to
123 determine whether there are language-specific reasons for not
124 inlining a given function. */
127 lhd_tree_inlining_cannot_inline_tree_fn (fnp)
128 tree *fnp ATTRIBUTE_UNUSED;
133 /* lang_hooks.tree_inlining.disregard_inline_limits is called to
134 determine whether a function should be considered for inlining even
135 if it would exceed inlining limits. */
138 lhd_tree_inlining_disregard_inline_limits (fn)
139 tree fn ATTRIBUTE_UNUSED;
144 /* lang_hooks.tree_inlining.add_pending_fn_decls is called before
145 starting to inline a function, to push any language-specific
146 functions that should not be inlined into the current function,
147 into VAFNP. PFN is the top of varray, and should be returned if no
148 functions are pushed into VAFNP. The top of the varray should be
152 lhd_tree_inlining_add_pending_fn_decls (vafnp, pfn)
153 void *vafnp ATTRIBUTE_UNUSED;
159 /* lang_hooks.tree_inlining.tree_chain_matters_p indicates whether the
160 TREE_CHAIN of a language-specific tree node is relevant, i.e.,
161 whether it should be walked, copied and preserved across copies. */
164 lhd_tree_inlining_tree_chain_matters_p (t)
165 tree t ATTRIBUTE_UNUSED;
170 /* lang_hooks.tree_inlining.auto_var_in_fn_p is called to determine
171 whether VT is an automatic variable defined in function FT. */
174 lhd_tree_inlining_auto_var_in_fn_p (var, fn)
177 return (DECL_P (var) && DECL_CONTEXT (var) == fn
178 && (((TREE_CODE (var) == VAR_DECL || TREE_CODE (var) == PARM_DECL)
179 && ! TREE_STATIC (var))
180 || TREE_CODE (var) == LABEL_DECL
181 || TREE_CODE (var) == RESULT_DECL));
184 /* lang_hooks.tree_inlining.copy_res_decl_for_inlining should return a
185 declaration for the result RES of function FN to be inlined into
186 CALLER. NDP points to an integer that should be set in case a new
187 declaration wasn't created (presumably because RES was of aggregate
188 type, such that a TARGET_EXPR is used for the result). TEXPS is a
189 pointer to a varray with the stack of TARGET_EXPRs seen while
190 inlining functions into caller; the top of TEXPS is supposed to
194 lhd_tree_inlining_copy_res_decl_for_inlining (res, fn, caller,
196 tree res, fn, caller;
197 void *dm ATTRIBUTE_UNUSED;
198 int *ndp ATTRIBUTE_UNUSED;
199 void *texps ATTRIBUTE_UNUSED;
201 return copy_decl_for_inlining (res, fn, caller);
204 /* lang_hooks.tree_inlining.anon_aggr_type_p determines whether T is a
205 type node representing an anonymous aggregate (union, struct, etc),
206 i.e., one whose members are in the same scope as the union itself. */
209 lhd_tree_inlining_anon_aggr_type_p (t)
210 tree t ATTRIBUTE_UNUSED;
215 /* lang_hooks.tree_dump.dump_tree: Dump language-specific parts of tree
216 nodes. Returns non-zero if it does not want the usual dumping of the
220 lhd_tree_dump_dump_tree (di, t)
221 void *di ATTRIBUTE_UNUSED;
222 tree t ATTRIBUTE_UNUSED;
227 /* lang_hooks.tree_dump.type_qual: Determine type qualifiers in a
228 language-specific way. */
231 lhd_tree_dump_type_quals (t)
234 return TYPE_QUALS (t);