1 /* Generate macros based on the combined_fn enum.
2 Copyright (C) 2015-2016 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
20 /* Automatically generate code fragments related to combined_fn.
22 The program looks for math built-in functions that have float, double
23 and long double variants, such as {sqrtf, sqrt, sqrtl}, and that may
24 or may not have an associated internal function as well. It also looks
25 for integer built-in functions that have int, long, long long and
26 intmax_t variants, such as {clz, clzl, clzll, clzimax}, and that
27 again may or may not have an associated internal function as well.
29 When run with -c, the generator prints a list of macros such as:
33 for each group of functions described above, with 'case CFN_*'
34 statements for each built-in and internal function in the group.
35 For example, there are both built-in and internal implementations
36 of SQRT, so "CASE_CFN_SQRT:" is equivalent to:
38 case CFN_BUILT_IN_SQRTF:
39 case CFN_BUILT_IN_SQRT:
40 case CFN_BUILT_IN_SQRTL:
43 The macros for groups with no internal function drop the last line.
45 When run with -o, the generator prints a similar list of
46 define_operator_list directives, for use by match.pd. Each operator
47 list starts with the built-in functions, in order of ascending type width.
48 This is followed by an entry for the internal function, or "null" if there
49 is no internal function for the group. For example:
51 (define_operator_list SQRT
59 (define_operator_list CABS
67 #include "coretypes.h"
68 #include "hash-table.h"
72 typedef hash_set <nofree_string_hash> string_set;
74 /* Add all names in null-terminated list NAMES to SET. */
77 add_to_set (string_set *set, const char *const *names)
79 for (unsigned int i = 0; names[i]; ++i)
83 /* Return true if *BUILTINS contains BUILT_IN_<NAME><SUFFIX> for all
84 suffixes in null-terminated list SUFFIXES. */
87 is_group (string_set *builtins, const char *name, const char *const *suffixes)
89 for (unsigned int i = 0; suffixes[i]; ++i)
90 if (!builtins->contains (ACONCAT (("BUILT_IN_", name, suffixes[i], NULL))))
95 /* Print a macro for all combined functions related to NAME, with the
96 null-terminated list of suffixes in SUFFIXES. INTERNAL_P says whether
97 CFN_<NAME> also exists. */
100 print_case_cfn (const char *name, bool internal_p,
101 const char *const *suffixes)
103 printf ("#define CASE_CFN_%s", name);
105 printf (" \\\n case CFN_%s", name);
106 for (unsigned int i = 0; suffixes[i]; ++i)
107 printf ("%s \\\n case CFN_BUILT_IN_%s%s",
108 internal_p || i > 0 ? ":" : "", name, suffixes[i]);
112 /* Print an operator list for all combined functions related to NAME,
113 with the null-terminated list of suffixes in SUFFIXES. INTERNAL_P
114 says whether CFN_<NAME> also exists. */
117 print_define_operator_list (const char *name, bool internal_p,
118 const char *const *suffixes)
120 printf ("(define_operator_list %s\n", name);
121 for (unsigned int i = 0; suffixes[i]; ++i)
122 printf (" BUILT_IN_%s%s\n", name, suffixes[i]);
124 printf (" IFN_%s)\n", name);
129 const char *const builtin_names[] = {
130 #define DEF_BUILTIN(ENUM, N, C, T, LT, B, F, NA, AT, IM, COND) \
132 #include "builtins.def"
136 const char *const internal_fn_flt_names[] = {
137 #define DEF_INTERNAL_FLT_FN(NAME, FLAGS, OPTAB, TYPE) \
139 #include "internal-fn.def"
143 const char *const internal_fn_int_names[] = {
144 #define DEF_INTERNAL_INT_FN(NAME, FLAGS, OPTAB, TYPE) \
146 #include "internal-fn.def"
150 static const char *const flt_suffixes[] = { "F", "", "L", NULL };
151 static const char *const int_suffixes[] = { "", "L", "LL", "IMAX", NULL };
153 static const char *const *const suffix_lists[] = {
160 main (int argc, char **argv)
162 /* Check arguments. */
166 || !strchr ("co", argv[1][1])
168 fatal ("usage: %s [-c|-o] > file", progname);
169 int type = argv[1][1];
171 /* Collect the set of built-in and internal functions. */
173 string_set internal_fns;
174 add_to_set (&builtins, builtin_names);
175 add_to_set (&internal_fns, internal_fn_flt_names);
176 add_to_set (&internal_fns, internal_fn_int_names);
178 /* Check the functions. */
179 for (unsigned int i = 0; internal_fn_flt_names[i]; ++i)
181 const char *name = internal_fn_flt_names[i];
182 if (!is_group (&builtins, name, flt_suffixes))
183 error ("DEF_INTERNAL_FLT_FN (%s) has no associated built-in"
186 for (unsigned int i = 0; internal_fn_int_names[i]; ++i)
188 const char *name = internal_fn_int_names[i];
189 if (!is_group (&builtins, name, int_suffixes))
190 error ("DEF_INTERNAL_INT_FN (%s) has no associated built-in"
194 /* Go through the built-in functions in declaration order, outputting
195 definitions as appropriate. */
196 for (unsigned int i = 0; builtin_names[i]; ++i)
198 const char *name = builtin_names[i];
199 if (strncmp (name, "BUILT_IN_", 9) == 0)
201 const char *root = name + 9;
202 for (unsigned int j = 0; suffix_lists[j]; ++j)
203 if (is_group (&builtins, root, suffix_lists[j]))
205 bool internal_p = internal_fns.contains (root);
207 print_case_cfn (root, internal_p, suffix_lists[j]);
209 print_define_operator_list (root, internal_p,
215 if (fflush (stdout) || fclose (stdout) || have_error)
216 return FATAL_EXIT_CODE;
217 return SUCCESS_EXIT_CODE;