2011-11-04 Tom de Vries <tom@codesourcery.com>
[official-gcc.git] / gcc / opth-gen.awk
blob541bc3ea596eb65818a698d66ed4aa17423f8b63
1 # Copyright (C) 2003,2004,2005,2006,2007,2008, 2010, 2011
2 # Free Software Foundation, Inc.
3 # Contributed by Kelley Cook, June 2004.
4 # Original code from Neil Booth, May 2003.
6 # This program is free software; you can redistribute it and/or modify it
7 # under the terms of the GNU General Public License as published by the
8 # Free Software Foundation; either version 3, or (at your option) any
9 # later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; see the file COPYING3. If not see
18 # <http://www.gnu.org/licenses/>.
20 # This Awk script reads in the option records generated from
21 # opt-gather.awk, combines the flags of duplicate options and generates a
22 # C header file.
24 # This program uses functions from opt-functions.awk and code from
25 # opt-read.awk.
26 # Usage: awk -f opt-functions.awk -f opt-read.awk -f opth-gen.awk \
27 # < inputfile > options.h
29 # Dump out an enumeration into a .h file.
30 # Combine the flags of duplicate options.
31 END {
32 print "/* This file is auto-generated by opth-gen.awk. */"
33 print ""
34 print "#ifndef OPTIONS_H"
35 print "#define OPTIONS_H"
36 print ""
37 print "#include \"flag-types.h\""
38 print ""
40 if (n_extra_h_includes > 0) {
41 for (i = 0; i < n_extra_h_includes; i++) {
42 print "#include " quote extra_h_includes[i] quote
44 print ""
47 print "#if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS)"
48 print "#ifndef GENERATOR_FILE"
49 print "#if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS)"
50 print "struct GTY(()) gcc_options"
51 print "#else"
52 print "struct gcc_options"
53 print "#endif"
54 print "{"
55 print "#endif"
57 for (i = 0; i < n_extra_vars; i++) {
58 var = extra_vars[i]
59 sub(" *=.*", "", var)
60 orig_var = var
61 name = var
62 type = var
63 type_after = var
64 sub("^.*[ *]", "", name)
65 sub("\\[.*\\]$", "", name)
66 sub("\\[.*\\]$", "", type)
67 sub(" *" name "$", "", type)
68 sub("^.*" name, "", type_after)
69 var_seen[name] = 1
70 print "#ifdef GENERATOR_FILE"
71 print "extern " orig_var ";"
72 print "#else"
73 print " " type " x_" name type_after ";"
74 print "#define " name " global_options.x_" name
75 print "#endif"
78 for (i = 0; i < n_opts; i++) {
79 if (flag_set_p("Save", flags[i]))
80 have_save = 1;
82 name = var_name(flags[i]);
83 if (name == "")
84 continue;
86 if (name in var_seen)
87 continue;
89 var_seen[name] = 1;
90 print "#ifdef GENERATOR_FILE"
91 print "extern " var_type(flags[i]) name ";"
92 print "#else"
93 print " " var_type(flags[i]) "x_" name ";"
94 print "#define " name " global_options.x_" name
95 print "#endif"
97 for (i = 0; i < n_opts; i++) {
98 name = static_var(opts[i], flags[i]);
99 if (name != "") {
100 print "#ifndef GENERATOR_FILE"
101 print " " var_type(flags[i]) "x_" name ";"
102 print "#define x_" name " do_not_use"
103 print "#endif"
106 for (i = 0; i < n_opts; i++) {
107 if (flag_set_p("SetByCombined", flags[i])) {
108 print "#ifndef GENERATOR_FILE"
109 print " bool frontend_set_" var_name(flags[i]) ";"
110 print "#endif"
113 print "#ifndef GENERATOR_FILE"
114 print "};"
115 print "extern struct gcc_options global_options;"
116 print "extern const struct gcc_options global_options_init;"
117 print "extern struct gcc_options global_options_set;"
118 print "#define target_flags_explicit global_options_set.x_target_flags"
119 print "#endif"
120 print "#endif"
121 print ""
123 # All of the optimization switches gathered together so they can be saved and restored.
124 # This will allow attribute((cold)) to turn on space optimization.
126 # Change the type of normal switches from int to unsigned char to save space.
127 # Also, order the structure so that pointer fields occur first, then int
128 # fields, and then char fields to provide the best packing.
130 print "#if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS)"
131 print ""
132 print "/* Structure to save/restore optimization and target specific options. */";
133 print "struct GTY(()) cl_optimization";
134 print "{";
136 n_opt_char = 2;
137 n_opt_short = 0;
138 n_opt_int = 0;
139 n_opt_enum = 1;
140 n_opt_other = 0;
141 var_opt_char[0] = "unsigned char x_optimize";
142 var_opt_char[1] = "unsigned char x_optimize_size";
143 var_opt_enum[0] = "enum fp_contract_mode x_flag_fp_contract_mode";
145 for (i = 0; i < n_opts; i++) {
146 if (flag_set_p("Optimization", flags[i])) {
147 name = var_name(flags[i])
148 if(name == "")
149 continue;
151 if(name in var_opt_seen)
152 continue;
154 var_opt_seen[name]++;
155 otype = var_type_struct(flags[i]);
156 if (otype ~ "^((un)?signed +)?int *$")
157 var_opt_int[n_opt_int++] = otype "x_" name;
159 else if (otype ~ "^((un)?signed +)?short *$")
160 var_opt_short[n_opt_short++] = otype "x_" name;
162 else if (otype ~ "^((un)?signed +)?char *$")
163 var_opt_char[n_opt_char++] = otype "x_" name;
165 else if (otype ~ ("^enum +[_" alnum "]+ *$"))
166 var_opt_enum[n_opt_enum++] = otype "x_" name;
168 else
169 var_opt_other[n_opt_other++] = otype "x_" name;
173 for (i = 0; i < n_opt_other; i++) {
174 print " " var_opt_other[i] ";";
177 for (i = 0; i < n_opt_int; i++) {
178 print " " var_opt_int[i] ";";
181 for (i = 0; i < n_opt_enum; i++) {
182 print " " var_opt_enum[i] ";";
185 for (i = 0; i < n_opt_short; i++) {
186 print " " var_opt_short[i] ";";
189 for (i = 0; i < n_opt_char; i++) {
190 print " " var_opt_char[i] ";";
193 print "};";
194 print "";
196 # Target and optimization save/restore/print functions.
197 print "/* Structure to save/restore selected target specific options. */";
198 print "struct GTY(()) cl_target_option";
199 print "{";
201 n_target_char = 0;
202 n_target_short = 0;
203 n_target_int = 0;
204 n_target_enum = 0;
205 n_target_other = 0;
207 for (i = 0; i < n_target_save; i++) {
208 if (target_save_decl[i] ~ "^((un)?signed +)?int +[_" alnum "]+$")
209 var_target_int[n_target_int++] = target_save_decl[i];
211 else if (target_save_decl[i] ~ "^((un)?signed +)?short +[_" alnum "]+$")
212 var_target_short[n_target_short++] = target_save_decl[i];
214 else if (target_save_decl[i] ~ "^((un)?signed +)?char +[_ " alnum "]+$")
215 var_target_char[n_target_char++] = target_save_decl[i];
217 else if (target_save_decl[i] ~ ("^enum +[_" alnum "]+ +[_" alnum "]+$")) {
218 var_target_enum[n_target_enum++] = target_save_decl[i];
220 else
221 var_target_other[n_target_other++] = target_save_decl[i];
224 if (have_save) {
225 for (i = 0; i < n_opts; i++) {
226 if (flag_set_p("Save", flags[i])) {
227 name = var_name(flags[i])
228 if(name == "")
229 name = "target_flags";
231 if(name in var_save_seen)
232 continue;
234 var_save_seen[name]++;
235 otype = var_type_struct(flags[i])
236 if (otype ~ "^((un)?signed +)?int *$")
237 var_target_int[n_target_int++] = otype "x_" name;
239 else if (otype ~ "^((un)?signed +)?short *$")
240 var_target_short[n_target_short++] = otype "x_" name;
242 else if (otype ~ "^((un)?signed +)?char *$")
243 var_target_char[n_target_char++] = otype "x_" name;
245 else if (otype ~ ("^enum +[_" alnum "]+ +[_" alnum "]+"))
246 var_target_enum[n_target_enum++] = otype "x_" name;
248 else
249 var_target_other[n_target_other++] = otype "x_" name;
252 } else {
253 var_target_int[n_target_int++] = "int x_target_flags";
256 for (i = 0; i < n_target_other; i++) {
257 print " " var_target_other[i] ";";
260 for (i = 0; i < n_target_enum; i++) {
261 print " " var_target_enum[i] ";";
264 for (i = 0; i < n_target_int; i++) {
265 print " " var_target_int[i] ";";
268 for (i = 0; i < n_target_short; i++) {
269 print " " var_target_short[i] ";";
272 for (i = 0; i < n_target_char; i++) {
273 print " " var_target_char[i] ";";
276 print "};";
277 print "";
278 print "";
279 print "/* Save optimization variables into a structure. */"
280 print "extern void cl_optimization_save (struct cl_optimization *, struct gcc_options *);";
281 print "";
282 print "/* Restore optimization variables from a structure. */";
283 print "extern void cl_optimization_restore (struct gcc_options *, struct cl_optimization *);";
284 print "";
285 print "/* Print optimization variables from a structure. */";
286 print "extern void cl_optimization_print (FILE *, int, struct cl_optimization *);";
287 print "";
288 print "/* Save selected option variables into a structure. */"
289 print "extern void cl_target_option_save (struct cl_target_option *, struct gcc_options *);";
290 print "";
291 print "/* Restore selected option variables from a structure. */"
292 print "extern void cl_target_option_restore (struct gcc_options *, struct cl_target_option *);";
293 print "";
294 print "/* Print target option variables from a structure. */";
295 print "extern void cl_target_option_print (FILE *, int, struct cl_target_option *);";
296 print "#endif";
297 print "";
299 for (i = 0; i < n_opts; i++) {
300 name = opt_args("Mask", flags[i])
301 vname = var_name(flags[i])
302 mask = "MASK_"
303 mask_1 = "1"
304 if (vname != "") {
305 mask = "OPTION_MASK_"
306 if (host_wide_int[vname] == "yes")
307 mask_1 = "HOST_WIDE_INT_1"
309 if (name != "" && !flag_set_p("MaskExists", flags[i]))
310 print "#define " mask name " (" mask_1 " << " masknum[vname]++ ")"
312 for (i = 0; i < n_extra_masks; i++) {
313 print "#define MASK_" extra_masks[i] " (1 << " masknum[""]++ ")"
316 for (var in masknum) {
317 if (var != "" && host_wide_int[var] == "yes") {
318 print" #if defined(HOST_BITS_PER_WIDE_INT) && " masknum[var] " >= HOST_BITS_PER_WIDE_INT"
319 print "#error too many masks for " var
320 print "#endif"
322 else if (masknum[var] > 31) {
323 if (var == "")
324 print "#error too many target masks"
325 else
326 print "#error too many masks for " var
329 print ""
331 for (i = 0; i < n_opts; i++) {
332 name = opt_args("Mask", flags[i])
333 vname = var_name(flags[i])
334 macro = "OPTION_"
335 mask = "OPTION_MASK_"
336 if (vname == "") {
337 vname = "target_flags"
338 macro = "TARGET_"
339 mask = "MASK_"
341 if (name != "" && !flag_set_p("MaskExists", flags[i]))
342 print "#define " macro name \
343 " ((" vname " & " mask name ") != 0)"
345 for (i = 0; i < n_extra_masks; i++) {
346 print "#define TARGET_" extra_masks[i] \
347 " ((target_flags & MASK_" extra_masks[i] ") != 0)"
349 print ""
351 for (i = 0; i < n_opts; i++) {
352 opt = opt_args("InverseMask", flags[i])
353 if (opt ~ ",") {
354 vname = var_name(flags[i])
355 macro = "OPTION_"
356 mask = "OPTION_MASK_"
357 if (vname == "") {
358 vname = "target_flags"
359 macro = "TARGET_"
360 mask = "MASK_"
362 print "#define " macro nth_arg(1, opt) \
363 " ((" vname " & " mask nth_arg(0, opt) ") == 0)"
366 print ""
368 for (i = 0; i < n_langs; i++) {
369 macros[i] = "CL_" langs[i]
370 gsub( "[^" alnum "_]", "X", macros[i] )
371 s = substr(" ", length (macros[i]))
372 print "#define " macros[i] s " (1U << " i ")"
374 print "#define CL_LANG_ALL ((1U << " n_langs ") - 1)"
376 print ""
377 print "enum opt_code"
378 print "{"
380 for (i = 0; i < n_opts; i++)
381 back_chain[i] = "N_OPTS";
383 enum_value = 0
384 for (i = 0; i < n_opts; i++) {
385 # Combine the flags of identical switches. Switches
386 # appear many times if they are handled by many front
387 # ends, for example.
388 while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
389 flags[i + 1] = flags[i] " " flags[i + 1];
390 i++;
393 len = length (opts[i]);
394 enum = opt_enum(opts[i])
395 enum_string = enum " = " enum_value ","
397 # Aliases do not get enumeration names.
398 if ((flag_set_p("Alias.*", flags[i]) \
399 && !flag_set_p("SeparateAlias", flags[i])) \
400 || flag_set_p("Ignore", flags[i])) {
401 enum_string = "/* " enum_string " */"
404 # If this switch takes joined arguments, back-chain all
405 # subsequent switches to it for which it is a prefix. If
406 # a later switch S is a longer prefix of a switch T, T
407 # will be back-chained to S in a later iteration of this
408 # for() loop, which is what we want.
409 if (flag_set_p("Joined.*", flags[i])) {
410 for (j = i + 1; j < n_opts; j++) {
411 if (substr (opts[j], 1, len) != opts[i])
412 break;
413 back_chain[j] = enum;
417 s = substr(" ",
418 length (enum_string))
420 if (help[i] == "")
421 hlp = "0"
422 else
423 hlp = "N_(\"" help[i] "\")";
425 print " " enum_string s "/* -" opts[i] " */"
426 enum_value++
429 print " N_OPTS,"
430 print " OPT_SPECIAL_unknown,"
431 print " OPT_SPECIAL_ignore,"
432 print " OPT_SPECIAL_program_name,"
433 print " OPT_SPECIAL_input_file"
434 print "};"
435 print ""
436 print "#endif /* OPTIONS_H */"