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1 : : /* Define builtin-in macros for the C family front ends.
2 : : Copyright (C) 2002-2025 Free Software Foundation, Inc.
3 : :
4 : : This file is part of GCC.
5 : :
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
9 : : version.
10 : :
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
14 : : for more details.
15 : :
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/>. */
19 : :
20 : : #include "config.h"
21 : : #include "system.h"
22 : : #include "coretypes.h"
23 : : #include "target.h"
24 : : #include "c-common.h"
25 : : #include "memmodel.h"
26 : : #include "tm_p.h" /* For TARGET_CPU_CPP_BUILTINS & friends. */
27 : : #include "stringpool.h"
28 : : #include "stor-layout.h"
29 : : #include "flags.h"
30 : : #include "c-pragma.h"
31 : : #include "output.h" /* For user_label_prefix. */
32 : : #include "debug.h" /* For dwarf2out_do_cfi_asm. */
33 : : #include "common/common-target.h"
34 : : #include "cppbuiltin.h"
35 : : #include "configargs.h"
36 : :
37 : : #ifndef TARGET_OS_CPP_BUILTINS
38 : : # define TARGET_OS_CPP_BUILTINS()
39 : : #endif
40 : :
41 : : #ifndef TARGET_OBJFMT_CPP_BUILTINS
42 : : # define TARGET_OBJFMT_CPP_BUILTINS()
43 : : #endif
44 : :
45 : : #ifndef REGISTER_PREFIX
46 : : #define REGISTER_PREFIX ""
47 : : #endif
48 : :
49 : : /* Non-static as some targets don't use it. */
50 : : static void builtin_define_with_hex_fp_value (const char *, tree,
51 : : int, const char *,
52 : : const char *,
53 : : const char *);
54 : : static void builtin_define_stdint_macros (void);
55 : : static void builtin_define_constants (const char *, tree);
56 : : static void builtin_define_type_max (const char *, tree);
57 : : static void builtin_define_type_minmax (const char *, const char *, tree);
58 : : static void builtin_define_type_width (const char *, tree, tree);
59 : : static void builtin_define_float_constants (const char *,
60 : : const char *,
61 : : const char *,
62 : : const char *,
63 : : tree);
64 : :
65 : : /* Return true if MODE provides a fast multiply/add (FMA) builtin function.
66 : : Originally this function used the fma optab, but that doesn't work with
67 : : -save-temps, so just rely on the HAVE_fma macros for the standard floating
68 : : point types. */
69 : :
70 : : static bool
71 : 2074770 : mode_has_fma (machine_mode mode)
72 : : {
73 : 2074770 : switch (mode)
74 : : {
75 : : #ifdef HAVE_fmasf4
76 : 414954 : case E_SFmode:
77 : 414954 : return !!HAVE_fmasf4;
78 : : #endif
79 : :
80 : : #ifdef HAVE_fmadf4
81 : 622447 : case E_DFmode:
82 : 622447 : return !!HAVE_fmadf4;
83 : : #endif
84 : :
85 : : #ifdef HAVE_fmakf4 /* PowerPC if long double != __float128. */
86 : : case E_KFmode:
87 : : return !!HAVE_fmakf4;
88 : : #endif
89 : :
90 : : #ifdef HAVE_fmaxf4
91 : : case E_XFmode:
92 : : return !!HAVE_fmaxf4;
93 : : #endif
94 : :
95 : : #ifdef HAVE_fmatf4
96 : : case E_TFmode:
97 : : return !!HAVE_fmatf4;
98 : : #endif
99 : :
100 : : default:
101 : : break;
102 : : }
103 : :
104 : : return false;
105 : : }
106 : :
107 : : /* Define NAME with value TYPE size_unit. */
108 : : void
109 : 824594 : builtin_define_type_sizeof (const char *name, tree type)
110 : : {
111 : 1649188 : builtin_define_with_int_value (name,
112 : 824594 : tree_to_uhwi (TYPE_SIZE_UNIT (type)));
113 : 824594 : }
114 : :
115 : : /* Define the float.h constants for TYPE using NAME_PREFIX, FP_SUFFIX,
116 : : and FP_CAST. */
117 : : static void
118 : 2074770 : builtin_define_float_constants (const char *name_prefix,
119 : : const char *fp_suffix,
120 : : const char *fp_cast,
121 : : const char *fma_suffix,
122 : : tree type)
123 : : {
124 : : /* Used to convert radix-based values to base 10 values in several cases.
125 : :
126 : : In the max_exp -> max_10_exp conversion for 128-bit IEEE, we need at
127 : : least 6 significant digits for correct results. Using the fraction
128 : : formed by (log(2)*1e6)/(log(10)*1e6) overflows a 32-bit integer as an
129 : : intermediate; perhaps someone can find a better approximation, in the
130 : : mean time, I suspect using doubles won't harm the bootstrap here. */
131 : :
132 : 2074770 : const double log10_2 = .30102999566398119521;
133 : 2074770 : double log10_b;
134 : 2074770 : const struct real_format *fmt;
135 : 2074770 : const struct real_format *widefmt;
136 : :
137 : 2074770 : char name[64], buf[128];
138 : 2074770 : int dig, min_10_exp, max_10_exp;
139 : 2074770 : int decimal_dig;
140 : 2074770 : int type_decimal_dig;
141 : :
142 : 2074770 : fmt = REAL_MODE_FORMAT (TYPE_MODE (type));
143 : 2074770 : gcc_assert (fmt->b != 10);
144 : 2074770 : widefmt = REAL_MODE_FORMAT (TYPE_MODE (long_double_type_node));
145 : 2074770 : gcc_assert (widefmt->b != 10);
146 : 16598160 : for (int i = 0; i < NUM_FLOATN_NX_TYPES; i++)
147 : : {
148 : 14523390 : tree wtype = FLOATN_NX_TYPE_NODE (i);
149 : 14523390 : if (wtype != NULL_TREE)
150 : : {
151 : 12448620 : const struct real_format *wfmt
152 : 12448620 : = REAL_MODE_FORMAT (TYPE_MODE (wtype));
153 : 12448620 : gcc_assert (wfmt->b != 10);
154 : 12448620 : if (wfmt->p > widefmt->p)
155 : 14523390 : widefmt = wfmt;
156 : : }
157 : : }
158 : :
159 : : /* The radix of the exponent representation. */
160 : 2074770 : if (type == float_type_node)
161 : 207477 : builtin_define_with_int_value ("__FLT_RADIX__", fmt->b);
162 : 2074770 : log10_b = log10_2;
163 : :
164 : : /* The number of radix digits, p, in the floating-point significand. */
165 : 2074770 : sprintf (name, "__%s_MANT_DIG__", name_prefix);
166 : 2074770 : builtin_define_with_int_value (name, fmt->p);
167 : :
168 : : /* The number of decimal digits, q, such that any floating-point number
169 : : with q decimal digits can be rounded into a floating-point number with
170 : : p radix b digits and back again without change to the q decimal digits,
171 : :
172 : : p log10 b if b is a power of 10
173 : : floor((p - 1) log10 b) otherwise
174 : : */
175 : 2074770 : dig = (fmt->p - 1) * log10_b;
176 : 2074770 : sprintf (name, "__%s_DIG__", name_prefix);
177 : 2074770 : builtin_define_with_int_value (name, dig);
178 : :
179 : : /* The minimum negative int x such that b**(x-1) is a normalized float. */
180 : 2074770 : sprintf (name, "__%s_MIN_EXP__", name_prefix);
181 : 2074770 : sprintf (buf, "(%d)", fmt->emin);
182 : 2074770 : builtin_define_with_value (name, buf, 0);
183 : :
184 : : /* The minimum negative int x such that 10**x is a normalized float,
185 : :
186 : : ceil (log10 (b ** (emin - 1)))
187 : : = ceil (log10 (b) * (emin - 1))
188 : :
189 : : Recall that emin is negative, so the integer truncation calculates
190 : : the ceiling, not the floor, in this case. */
191 : 2074770 : min_10_exp = (fmt->emin - 1) * log10_b;
192 : 2074770 : sprintf (name, "__%s_MIN_10_EXP__", name_prefix);
193 : 2074770 : sprintf (buf, "(%d)", min_10_exp);
194 : 2074770 : builtin_define_with_value (name, buf, 0);
195 : :
196 : : /* The maximum int x such that b**(x-1) is a representable float. */
197 : 2074770 : sprintf (name, "__%s_MAX_EXP__", name_prefix);
198 : 2074770 : builtin_define_with_int_value (name, fmt->emax);
199 : :
200 : : /* The maximum int x such that 10**x is in the range of representable
201 : : finite floating-point numbers,
202 : :
203 : : floor (log10((1 - b**-p) * b**emax))
204 : : = floor (log10(1 - b**-p) + log10(b**emax))
205 : : = floor (log10(1 - b**-p) + log10(b)*emax)
206 : :
207 : : The safest thing to do here is to just compute this number. But since
208 : : we don't link cc1 with libm, we cannot. We could implement log10 here
209 : : a series expansion, but that seems too much effort because:
210 : :
211 : : Note that the first term, for all extant p, is a number exceedingly close
212 : : to zero, but slightly negative. Note that the second term is an integer
213 : : scaling an irrational number, and that because of the floor we are only
214 : : interested in its integral portion.
215 : :
216 : : In order for the first term to have any effect on the integral portion
217 : : of the second term, the second term has to be exceedingly close to an
218 : : integer itself (e.g. 123.000000000001 or something). Getting a result
219 : : that close to an integer requires that the irrational multiplicand have
220 : : a long series of zeros in its expansion, which doesn't occur in the
221 : : first 20 digits or so of log10(b).
222 : :
223 : : Hand-waving aside, crunching all of the sets of constants above by hand
224 : : does not yield a case for which the first term is significant, which
225 : : in the end is all that matters. */
226 : 2074770 : max_10_exp = fmt->emax * log10_b;
227 : 2074770 : sprintf (name, "__%s_MAX_10_EXP__", name_prefix);
228 : 2074770 : builtin_define_with_int_value (name, max_10_exp);
229 : :
230 : : /* The number of decimal digits, n, such that any floating-point number
231 : : can be rounded to n decimal digits and back again without change to
232 : : the value.
233 : :
234 : : p * log10(b) if b is a power of 10
235 : : ceil(1 + p * log10(b)) otherwise
236 : :
237 : : The only macro we care about is this number for the widest supported
238 : : floating type, but we want this value for rendering constants below. */
239 : 2074770 : {
240 : 2074770 : double d_decimal_dig
241 : 2074770 : = 1 + (fmt->p < widefmt->p ? widefmt->p : fmt->p) * log10_b;
242 : 2074770 : decimal_dig = d_decimal_dig;
243 : 2074770 : if (decimal_dig < d_decimal_dig)
244 : 2074770 : decimal_dig++;
245 : : }
246 : : /* Similar, for this type rather than long double. */
247 : 2074770 : {
248 : 2074770 : double type_d_decimal_dig = 1 + fmt->p * log10_b;
249 : 2074770 : type_decimal_dig = type_d_decimal_dig;
250 : 2074770 : if (type_decimal_dig < type_d_decimal_dig)
251 : 2074770 : type_decimal_dig++;
252 : : }
253 : : /* Define __DECIMAL_DIG__ to the value for long double to be
254 : : compatible with C99 and C11; see DR#501 and N2108. */
255 : 2074770 : if (type == long_double_type_node)
256 : 207477 : builtin_define_with_int_value ("__DECIMAL_DIG__", type_decimal_dig);
257 : 2074770 : sprintf (name, "__%s_DECIMAL_DIG__", name_prefix);
258 : 2074770 : builtin_define_with_int_value (name, type_decimal_dig);
259 : :
260 : : /* Since, for the supported formats, B is always a power of 2, we
261 : : construct the following numbers directly as a hexadecimal
262 : : constants. */
263 : 2074770 : get_max_float (fmt, buf, sizeof (buf), false);
264 : :
265 : 2074770 : sprintf (name, "__%s_MAX__", name_prefix);
266 : 2074770 : builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast);
267 : :
268 : 2074770 : get_max_float (fmt, buf, sizeof (buf), true);
269 : :
270 : 2074770 : sprintf (name, "__%s_NORM_MAX__", name_prefix);
271 : 2074770 : builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast);
272 : :
273 : : /* The minimum normalized positive floating-point number,
274 : : b**(emin-1). */
275 : 2074770 : sprintf (name, "__%s_MIN__", name_prefix);
276 : 2074770 : sprintf (buf, "0x1p%d", fmt->emin - 1);
277 : 2074770 : builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast);
278 : :
279 : : /* The difference between 1 and the least value greater than 1 that is
280 : : representable in the given floating point type, b**(1-p). */
281 : 2074770 : sprintf (name, "__%s_EPSILON__", name_prefix);
282 : 2074770 : if (fmt->pnan < fmt->p && (c_dialect_cxx () || !flag_isoc23))
283 : : /* This is an IBM extended double format, so 1.0 + any double is
284 : : representable precisely. */
285 : 0 : sprintf (buf, "0x1p%d", fmt->emin - fmt->p);
286 : : else
287 : 2074770 : sprintf (buf, "0x1p%d", 1 - fmt->p);
288 : 2074770 : builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast);
289 : :
290 : : /* For C++ std::numeric_limits<T>::denorm_min and C11 *_TRUE_MIN.
291 : : The minimum denormalized positive floating-point number, b**(emin-p).
292 : : The minimum normalized positive floating-point number for formats
293 : : that don't support denormals. */
294 : 2074770 : sprintf (name, "__%s_DENORM_MIN__", name_prefix);
295 : 2074770 : sprintf (buf, "0x1p%d", fmt->emin - (fmt->has_denorm ? fmt->p : 1));
296 : 2074770 : builtin_define_with_hex_fp_value (name, type, decimal_dig,
297 : : buf, fp_suffix, fp_cast);
298 : :
299 : 2074770 : sprintf (name, "__%s_HAS_DENORM__", name_prefix);
300 : 2074770 : builtin_define_with_value (name, fmt->has_denorm ? "1" : "0", 0);
301 : :
302 : : /* For C++ std::numeric_limits<T>::has_infinity. */
303 : 2074770 : sprintf (name, "__%s_HAS_INFINITY__", name_prefix);
304 : 2074770 : builtin_define_with_int_value (name,
305 : 8299080 : MODE_HAS_INFINITIES (TYPE_MODE (type)));
306 : : /* For C++ std::numeric_limits<T>::has_quiet_NaN. We do not have a
307 : : predicate to distinguish a target that has both quiet and
308 : : signalling NaNs from a target that has only quiet NaNs or only
309 : : signalling NaNs, so we assume that a target that has any kind of
310 : : NaN has quiet NaNs. */
311 : 2074770 : sprintf (name, "__%s_HAS_QUIET_NAN__", name_prefix);
312 : 8299080 : builtin_define_with_int_value (name, MODE_HAS_NANS (TYPE_MODE (type)));
313 : :
314 : : /* Note whether we have fast FMA. */
315 : 2074770 : if (mode_has_fma (TYPE_MODE (type)) && fma_suffix != NULL)
316 : : {
317 : 26145 : sprintf (name, "__FP_FAST_FMA%s", fma_suffix);
318 : 26145 : builtin_define_with_int_value (name, 1);
319 : : }
320 : :
321 : : /* For C23 *_IS_IEC_60559. 0 means the type does not match an IEC
322 : : 60559 format, 1 that it matches a format but not necessarily
323 : : operations. */
324 : 2074770 : sprintf (name, "__%s_IS_IEC_60559__", name_prefix);
325 : 2074770 : builtin_define_with_int_value (name, fmt->ieee_bits != 0);
326 : 2074770 : }
327 : :
328 : : /* Define __DECx__ constants for TYPE using NAME_PREFIX and SUFFIX. */
329 : : static void
330 : 829908 : builtin_define_decimal_float_constants (const char *name_prefix,
331 : : const char *suffix,
332 : : tree type)
333 : : {
334 : 829908 : const struct real_format *fmt;
335 : 829908 : char name[64], buf[128], *p;
336 : 829908 : int digits;
337 : :
338 : 829908 : fmt = REAL_MODE_FORMAT (TYPE_MODE (type));
339 : :
340 : : /* The number of radix digits, p, in the significand. */
341 : 829908 : sprintf (name, "__%s_MANT_DIG__", name_prefix);
342 : 829908 : builtin_define_with_int_value (name, fmt->p);
343 : :
344 : : /* The minimum negative int x such that b**(x-1) is a normalized float. */
345 : 829908 : sprintf (name, "__%s_MIN_EXP__", name_prefix);
346 : 829908 : sprintf (buf, "(%d)", fmt->emin);
347 : 829908 : builtin_define_with_value (name, buf, 0);
348 : :
349 : : /* The maximum int x such that b**(x-1) is a representable float. */
350 : 829908 : sprintf (name, "__%s_MAX_EXP__", name_prefix);
351 : 829908 : builtin_define_with_int_value (name, fmt->emax);
352 : :
353 : : /* Compute the minimum representable value. */
354 : 829908 : sprintf (name, "__%s_MIN__", name_prefix);
355 : 829908 : sprintf (buf, "1E%d%s", fmt->emin - 1, suffix);
356 : 829908 : builtin_define_with_value (name, buf, 0);
357 : :
358 : : /* Compute the maximum representable value. */
359 : 829908 : sprintf (name, "__%s_MAX__", name_prefix);
360 : 829908 : get_max_float (fmt, buf, sizeof (buf) - strlen (suffix), false);
361 : 829908 : strcat (buf, suffix);
362 : 829908 : builtin_define_with_value (name, buf, 0);
363 : :
364 : : /* Compute epsilon (the difference between 1 and least value greater
365 : : than 1 representable). */
366 : 829908 : sprintf (name, "__%s_EPSILON__", name_prefix);
367 : 829908 : sprintf (buf, "1E-%d%s", fmt->p - 1, suffix);
368 : 829908 : builtin_define_with_value (name, buf, 0);
369 : :
370 : : /* Minimum subnormal positive decimal value. */
371 : 829908 : sprintf (name, "__%s_SUBNORMAL_MIN__", name_prefix);
372 : 829908 : p = buf;
373 : 18880407 : for (digits = fmt->p; digits > 1; digits--)
374 : : {
375 : 18050499 : *p++ = '0';
376 : 18050499 : if (digits == fmt->p)
377 : 829908 : *p++ = '.';
378 : : }
379 : 829908 : *p = 0;
380 : 829908 : sprintf (&buf[fmt->p], "1E%d%s", fmt->emin - 1, suffix);
381 : 829908 : builtin_define_with_value (name, buf, 0);
382 : 829908 : }
383 : :
384 : : /* Define fixed-point constants for TYPE using NAME_PREFIX and SUFFIX. */
385 : :
386 : : static void
387 : 0 : builtin_define_fixed_point_constants (const char *name_prefix,
388 : : const char *suffix,
389 : : tree type)
390 : : {
391 : 0 : char name[64], buf[256], *new_buf;
392 : 0 : int i, mod;
393 : :
394 : 0 : sprintf (name, "__%s_FBIT__", name_prefix);
395 : 0 : builtin_define_with_int_value (name, TYPE_FBIT (type));
396 : :
397 : 0 : sprintf (name, "__%s_IBIT__", name_prefix);
398 : 0 : builtin_define_with_int_value (name, TYPE_IBIT (type));
399 : :
400 : : /* If there is no suffix, defines are for fixed-point modes.
401 : : We just return. */
402 : 0 : if (strcmp (suffix, "") == 0)
403 : 0 : return;
404 : :
405 : 0 : if (TYPE_UNSIGNED (type))
406 : : {
407 : 0 : sprintf (name, "__%s_MIN__", name_prefix);
408 : 0 : sprintf (buf, "0.0%s", suffix);
409 : 0 : builtin_define_with_value (name, buf, 0);
410 : : }
411 : : else
412 : : {
413 : 0 : sprintf (name, "__%s_MIN__", name_prefix);
414 : 0 : if (ALL_ACCUM_MODE_P (TYPE_MODE (type)))
415 : 0 : sprintf (buf, "(-0X1P%d%s-0X1P%d%s)", TYPE_IBIT (type) - 1, suffix,
416 : 0 : TYPE_IBIT (type) - 1, suffix);
417 : : else
418 : 0 : sprintf (buf, "(-0.5%s-0.5%s)", suffix, suffix);
419 : 0 : builtin_define_with_value (name, buf, 0);
420 : : }
421 : :
422 : 0 : sprintf (name, "__%s_MAX__", name_prefix);
423 : 0 : sprintf (buf, "0X");
424 : 0 : new_buf = buf + 2;
425 : 0 : mod = (TYPE_FBIT (type) + TYPE_IBIT (type)) % 4;
426 : 0 : if (mod)
427 : 0 : sprintf (new_buf++, "%x", (1 << mod) - 1);
428 : 0 : for (i = 0; i < (TYPE_FBIT (type) + TYPE_IBIT (type)) / 4; i++)
429 : 0 : sprintf (new_buf++, "F");
430 : 0 : sprintf (new_buf, "P-%d%s", TYPE_FBIT (type), suffix);
431 : 0 : builtin_define_with_value (name, buf, 0);
432 : :
433 : 0 : sprintf (name, "__%s_EPSILON__", name_prefix);
434 : 0 : sprintf (buf, "0x1P-%d%s", TYPE_FBIT (type), suffix);
435 : 0 : builtin_define_with_value (name, buf, 0);
436 : : }
437 : :
438 : : /* Define macros used by <stdint.h>. */
439 : : static void
440 : 207477 : builtin_define_stdint_macros (void)
441 : : {
442 : 414954 : builtin_define_type_max ("__INTMAX_MAX__", intmax_type_node);
443 : 207477 : builtin_define_constants ("__INTMAX_C", intmax_type_node);
444 : 414954 : builtin_define_type_max ("__UINTMAX_MAX__", uintmax_type_node);
445 : 207477 : builtin_define_constants ("__UINTMAX_C", uintmax_type_node);
446 : 207477 : builtin_define_type_width ("__INTMAX_WIDTH__", intmax_type_node,
447 : : uintmax_type_node);
448 : 207477 : if (sig_atomic_type_node)
449 : : {
450 : 207477 : builtin_define_type_minmax ("__SIG_ATOMIC_MIN__", "__SIG_ATOMIC_MAX__",
451 : : sig_atomic_type_node);
452 : 207477 : builtin_define_type_width ("__SIG_ATOMIC_WIDTH__", sig_atomic_type_node,
453 : : NULL_TREE);
454 : : }
455 : 207477 : if (int8_type_node)
456 : 207477 : builtin_define_type_max ("__INT8_MAX__", int8_type_node);
457 : 207477 : if (int16_type_node)
458 : 207477 : builtin_define_type_max ("__INT16_MAX__", int16_type_node);
459 : 207477 : if (int32_type_node)
460 : 207477 : builtin_define_type_max ("__INT32_MAX__", int32_type_node);
461 : 207477 : if (int64_type_node)
462 : 207477 : builtin_define_type_max ("__INT64_MAX__", int64_type_node);
463 : 207477 : if (uint8_type_node)
464 : 207477 : builtin_define_type_max ("__UINT8_MAX__", uint8_type_node);
465 : 207477 : if (c_uint16_type_node)
466 : 207477 : builtin_define_type_max ("__UINT16_MAX__", c_uint16_type_node);
467 : 207477 : if (c_uint32_type_node)
468 : 207477 : builtin_define_type_max ("__UINT32_MAX__", c_uint32_type_node);
469 : 207477 : if (c_uint64_type_node)
470 : 207477 : builtin_define_type_max ("__UINT64_MAX__", c_uint64_type_node);
471 : 207477 : if (int_least8_type_node)
472 : : {
473 : 414954 : builtin_define_type_max ("__INT_LEAST8_MAX__", int_least8_type_node);
474 : 207477 : builtin_define_constants ("__INT8_C", int_least8_type_node);
475 : 207477 : builtin_define_type_width ("__INT_LEAST8_WIDTH__", int_least8_type_node,
476 : : uint_least8_type_node);
477 : : }
478 : 207477 : if (int_least16_type_node)
479 : : {
480 : 414954 : builtin_define_type_max ("__INT_LEAST16_MAX__", int_least16_type_node);
481 : 207477 : builtin_define_constants ("__INT16_C", int_least16_type_node);
482 : 207477 : builtin_define_type_width ("__INT_LEAST16_WIDTH__",
483 : : int_least16_type_node,
484 : : uint_least16_type_node);
485 : : }
486 : 207477 : if (int_least32_type_node)
487 : : {
488 : 414954 : builtin_define_type_max ("__INT_LEAST32_MAX__", int_least32_type_node);
489 : 207477 : builtin_define_constants ("__INT32_C", int_least32_type_node);
490 : 207477 : builtin_define_type_width ("__INT_LEAST32_WIDTH__",
491 : : int_least32_type_node,
492 : : uint_least32_type_node);
493 : : }
494 : 207477 : if (int_least64_type_node)
495 : : {
496 : 414954 : builtin_define_type_max ("__INT_LEAST64_MAX__", int_least64_type_node);
497 : 207477 : builtin_define_constants ("__INT64_C", int_least64_type_node);
498 : 207477 : builtin_define_type_width ("__INT_LEAST64_WIDTH__",
499 : : int_least64_type_node,
500 : : uint_least64_type_node);
501 : : }
502 : 207477 : if (uint_least8_type_node)
503 : : {
504 : 414954 : builtin_define_type_max ("__UINT_LEAST8_MAX__", uint_least8_type_node);
505 : 207477 : builtin_define_constants ("__UINT8_C", uint_least8_type_node);
506 : : }
507 : 207477 : if (uint_least16_type_node)
508 : : {
509 : 414954 : builtin_define_type_max ("__UINT_LEAST16_MAX__", uint_least16_type_node);
510 : 207477 : builtin_define_constants ("__UINT16_C", uint_least16_type_node);
511 : : }
512 : 207477 : if (uint_least32_type_node)
513 : : {
514 : 414954 : builtin_define_type_max ("__UINT_LEAST32_MAX__", uint_least32_type_node);
515 : 207477 : builtin_define_constants ("__UINT32_C", uint_least32_type_node);
516 : : }
517 : 207477 : if (uint_least64_type_node)
518 : : {
519 : 414954 : builtin_define_type_max ("__UINT_LEAST64_MAX__", uint_least64_type_node);
520 : 207477 : builtin_define_constants ("__UINT64_C", uint_least64_type_node);
521 : : }
522 : 207477 : if (int_fast8_type_node)
523 : : {
524 : 414954 : builtin_define_type_max ("__INT_FAST8_MAX__", int_fast8_type_node);
525 : 207477 : builtin_define_type_width ("__INT_FAST8_WIDTH__", int_fast8_type_node,
526 : : uint_fast8_type_node);
527 : : }
528 : 207477 : if (int_fast16_type_node)
529 : : {
530 : 414954 : builtin_define_type_max ("__INT_FAST16_MAX__", int_fast16_type_node);
531 : 207477 : builtin_define_type_width ("__INT_FAST16_WIDTH__", int_fast16_type_node,
532 : : uint_fast16_type_node);
533 : : }
534 : 207477 : if (int_fast32_type_node)
535 : : {
536 : 414954 : builtin_define_type_max ("__INT_FAST32_MAX__", int_fast32_type_node);
537 : 207477 : builtin_define_type_width ("__INT_FAST32_WIDTH__", int_fast32_type_node,
538 : : uint_fast32_type_node);
539 : : }
540 : 207477 : if (int_fast64_type_node)
541 : : {
542 : 414954 : builtin_define_type_max ("__INT_FAST64_MAX__", int_fast64_type_node);
543 : 207477 : builtin_define_type_width ("__INT_FAST64_WIDTH__", int_fast64_type_node,
544 : : uint_fast64_type_node);
545 : : }
546 : 207477 : if (uint_fast8_type_node)
547 : 207477 : builtin_define_type_max ("__UINT_FAST8_MAX__", uint_fast8_type_node);
548 : 207477 : if (uint_fast16_type_node)
549 : 207477 : builtin_define_type_max ("__UINT_FAST16_MAX__", uint_fast16_type_node);
550 : 207477 : if (uint_fast32_type_node)
551 : 207477 : builtin_define_type_max ("__UINT_FAST32_MAX__", uint_fast32_type_node);
552 : 207477 : if (uint_fast64_type_node)
553 : 207477 : builtin_define_type_max ("__UINT_FAST64_MAX__", uint_fast64_type_node);
554 : 207477 : if (intptr_type_node)
555 : : {
556 : 414954 : builtin_define_type_max ("__INTPTR_MAX__", intptr_type_node);
557 : 207477 : builtin_define_type_width ("__INTPTR_WIDTH__", intptr_type_node,
558 : : uintptr_type_node);
559 : : }
560 : 207477 : if (uintptr_type_node)
561 : 207477 : builtin_define_type_max ("__UINTPTR_MAX__", uintptr_type_node);
562 : 207477 : }
563 : :
564 : : /* Adjust the optimization macros when a #pragma GCC optimization is done to
565 : : reflect the current level. */
566 : : void
567 : 620 : c_cpp_builtins_optimize_pragma (cpp_reader *pfile, tree prev_tree,
568 : : tree cur_tree)
569 : : {
570 : 620 : struct cl_optimization *prev = TREE_OPTIMIZATION (prev_tree);
571 : 620 : struct cl_optimization *cur = TREE_OPTIMIZATION (cur_tree);
572 : 620 : bool prev_fast_math;
573 : 620 : bool cur_fast_math;
574 : :
575 : : /* -undef turns off target-specific built-ins. */
576 : 620 : if (flag_undef)
577 : : return;
578 : :
579 : : /* Make sure all of the builtins about to be declared have
580 : : BUILTINS_LOCATION has their location_t. */
581 : 620 : cpp_force_token_locations (parse_in, BUILTINS_LOCATION);
582 : :
583 : : /* Other target-independent built-ins determined by command-line
584 : : options. */
585 : 620 : if (!prev->x_optimize_size && cur->x_optimize_size)
586 : 1 : cpp_define_unused (pfile, "__OPTIMIZE_SIZE__");
587 : 619 : else if (prev->x_optimize_size && !cur->x_optimize_size)
588 : 2 : cpp_undef (pfile, "__OPTIMIZE_SIZE__");
589 : :
590 : 620 : if (!prev->x_optimize && cur->x_optimize)
591 : 111 : cpp_define_unused (pfile, "__OPTIMIZE__");
592 : 509 : else if (prev->x_optimize && !cur->x_optimize)
593 : 77 : cpp_undef (pfile, "__OPTIMIZE__");
594 : :
595 : 620 : prev_fast_math = fast_math_flags_struct_set_p (prev);
596 : 620 : cur_fast_math = fast_math_flags_struct_set_p (cur);
597 : 620 : if (!prev_fast_math && cur_fast_math)
598 : 6 : cpp_define_unused (pfile, "__FAST_MATH__");
599 : 614 : else if (prev_fast_math && !cur_fast_math)
600 : 13 : cpp_undef (pfile, "__FAST_MATH__");
601 : :
602 : 620 : if (!prev->x_flag_signaling_nans && cur->x_flag_signaling_nans)
603 : 0 : cpp_define_unused (pfile, "__SUPPORT_SNAN__");
604 : 620 : else if (prev->x_flag_signaling_nans && !cur->x_flag_signaling_nans)
605 : 0 : cpp_undef (pfile, "__SUPPORT_SNAN__");
606 : :
607 : 620 : if (!prev->x_flag_errno_math && cur->x_flag_errno_math)
608 : 14 : cpp_undef (pfile, "__NO_MATH_ERRNO__");
609 : 606 : else if (prev->x_flag_errno_math && !cur->x_flag_errno_math)
610 : 7 : cpp_define_unused (pfile, "__NO_MATH_ERRNO__");
611 : :
612 : 620 : if (!prev->x_flag_finite_math_only && cur->x_flag_finite_math_only)
613 : : {
614 : 8 : cpp_undef (pfile, "__FINITE_MATH_ONLY__");
615 : 8 : cpp_define_unused (pfile, "__FINITE_MATH_ONLY__=1");
616 : : }
617 : 612 : else if (prev->x_flag_finite_math_only && !cur->x_flag_finite_math_only)
618 : : {
619 : 14 : cpp_undef (pfile, "__FINITE_MATH_ONLY__");
620 : 14 : cpp_define_unused (pfile, "__FINITE_MATH_ONLY__=0");
621 : : }
622 : :
623 : 620 : if (!prev->x_flag_reciprocal_math && cur->x_flag_reciprocal_math)
624 : 8 : cpp_define_unused (pfile, "__RECIPROCAL_MATH__");
625 : 612 : else if (prev->x_flag_reciprocal_math && !cur->x_flag_reciprocal_math)
626 : 15 : cpp_undef (pfile, "__RECIPROCAL_MATH__");
627 : :
628 : 620 : if (!prev->x_flag_signed_zeros && cur->x_flag_signed_zeros)
629 : 15 : cpp_undef (pfile, "__NO_SIGNED_ZEROS__");
630 : 605 : else if (prev->x_flag_signed_zeros && !cur->x_flag_signed_zeros)
631 : 8 : cpp_define_unused (pfile, "__NO_SIGNED_ZEROS__");
632 : :
633 : 620 : if (!prev->x_flag_trapping_math && cur->x_flag_trapping_math)
634 : 15 : cpp_undef (pfile, "__NO_TRAPPING_MATH__");
635 : 605 : else if (prev->x_flag_trapping_math && !cur->x_flag_trapping_math)
636 : 8 : cpp_define_unused (pfile, "__NO_TRAPPING_MATH__");
637 : :
638 : 620 : if (!prev->x_flag_associative_math && cur->x_flag_associative_math)
639 : 8 : cpp_define_unused (pfile, "__ASSOCIATIVE_MATH__");
640 : 612 : else if (prev->x_flag_associative_math && !cur->x_flag_associative_math)
641 : 15 : cpp_undef (pfile, "__ASSOCIATIVE_MATH__");
642 : :
643 : 620 : if (!prev->x_flag_rounding_math && cur->x_flag_rounding_math)
644 : 2 : cpp_define_unused (pfile, "__ROUNDING_MATH__");
645 : 618 : else if (prev->x_flag_rounding_math && !cur->x_flag_rounding_math)
646 : 2 : cpp_undef (pfile, "__ROUNDING_MATH__");
647 : :
648 : 620 : cpp_stop_forcing_token_locations (parse_in);
649 : : }
650 : :
651 : :
652 : : /* This function will emit cpp macros to indicate the presence of various lock
653 : : free atomic operations. */
654 : :
655 : : static void
656 : 207477 : cpp_atomic_builtins (cpp_reader *pfile)
657 : : {
658 : : /* Set a flag for each size of object that compare and swap exists for up to
659 : : a 16 byte object. */
660 : : #define SWAP_LIMIT 17
661 : 207477 : bool have_swap[SWAP_LIMIT];
662 : 207477 : unsigned int psize;
663 : :
664 : : /* Clear the map of sizes compare_and swap exists for. */
665 : 207477 : memset (have_swap, 0, sizeof (have_swap));
666 : :
667 : : /* Tell source code if the compiler makes sync_compare_and_swap
668 : : builtins available. */
669 : : #ifndef HAVE_sync_compare_and_swapqi
670 : : #define HAVE_sync_compare_and_swapqi 0
671 : : #endif
672 : : #ifndef HAVE_atomic_compare_and_swapqi
673 : : #define HAVE_atomic_compare_and_swapqi 0
674 : : #endif
675 : :
676 : 207477 : if (HAVE_sync_compare_and_swapqi || HAVE_atomic_compare_and_swapqi)
677 : : {
678 : 207477 : cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1");
679 : 207477 : have_swap[1] = true;
680 : : }
681 : :
682 : : #ifndef HAVE_sync_compare_and_swaphi
683 : : #define HAVE_sync_compare_and_swaphi 0
684 : : #endif
685 : : #ifndef HAVE_atomic_compare_and_swaphi
686 : : #define HAVE_atomic_compare_and_swaphi 0
687 : : #endif
688 : 207477 : if (HAVE_sync_compare_and_swaphi || HAVE_atomic_compare_and_swaphi)
689 : : {
690 : 207477 : cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2");
691 : 207477 : have_swap[2] = true;
692 : : }
693 : :
694 : : #ifndef HAVE_sync_compare_and_swapsi
695 : : #define HAVE_sync_compare_and_swapsi 0
696 : : #endif
697 : : #ifndef HAVE_atomic_compare_and_swapsi
698 : : #define HAVE_atomic_compare_and_swapsi 0
699 : : #endif
700 : 207477 : if (HAVE_sync_compare_and_swapsi || HAVE_atomic_compare_and_swapsi)
701 : : {
702 : 207477 : cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4");
703 : 207477 : have_swap[4] = true;
704 : : }
705 : :
706 : : #ifndef HAVE_sync_compare_and_swapdi
707 : : #define HAVE_sync_compare_and_swapdi 0
708 : : #endif
709 : : #ifndef HAVE_atomic_compare_and_swapdi
710 : : #define HAVE_atomic_compare_and_swapdi 0
711 : : #endif
712 : 207477 : if (HAVE_sync_compare_and_swapdi || HAVE_atomic_compare_and_swapdi)
713 : : {
714 : 207477 : cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8");
715 : 207477 : have_swap[8] = true;
716 : : }
717 : :
718 : : #ifndef HAVE_sync_compare_and_swapti
719 : : #define HAVE_sync_compare_and_swapti 0
720 : : #endif
721 : : #ifndef HAVE_atomic_compare_and_swapti
722 : : #define HAVE_atomic_compare_and_swapti 0
723 : : #endif
724 : 207477 : if (HAVE_sync_compare_and_swapti || HAVE_atomic_compare_and_swapti)
725 : : {
726 : 771 : cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16");
727 : 771 : have_swap[16] = true;
728 : : }
729 : :
730 : : /* Tell the source code about various types. These map to the C++11 and C11
731 : : macros where 2 indicates lock-free always, and 1 indicates sometimes
732 : : lock free. */
733 : : #define SIZEOF_NODE(T) (tree_to_uhwi (TYPE_SIZE_UNIT (T)))
734 : : #define SWAP_INDEX(T) ((SIZEOF_NODE (T) < SWAP_LIMIT) ? SIZEOF_NODE (T) : 0)
735 : 207477 : builtin_define_with_int_value ("__GCC_ATOMIC_BOOL_LOCK_FREE",
736 : 414954 : (have_swap[SWAP_INDEX (boolean_type_node)]? 2 : 1));
737 : 207477 : builtin_define_with_int_value ("__GCC_ATOMIC_CHAR_LOCK_FREE",
738 : 414954 : (have_swap[SWAP_INDEX (signed_char_type_node)]? 2 : 1));
739 : 207477 : if (flag_char8_t)
740 : 129454 : builtin_define_with_int_value ("__GCC_ATOMIC_CHAR8_T_LOCK_FREE",
741 : 258908 : (have_swap[SWAP_INDEX (char8_type_node)]? 2 : 1));
742 : 207477 : builtin_define_with_int_value ("__GCC_ATOMIC_CHAR16_T_LOCK_FREE",
743 : 414954 : (have_swap[SWAP_INDEX (char16_type_node)]? 2 : 1));
744 : 207477 : builtin_define_with_int_value ("__GCC_ATOMIC_CHAR32_T_LOCK_FREE",
745 : 414954 : (have_swap[SWAP_INDEX (char32_type_node)]? 2 : 1));
746 : 207477 : builtin_define_with_int_value ("__GCC_ATOMIC_WCHAR_T_LOCK_FREE",
747 : 414954 : (have_swap[SWAP_INDEX (wchar_type_node)]? 2 : 1));
748 : 207477 : builtin_define_with_int_value ("__GCC_ATOMIC_SHORT_LOCK_FREE",
749 : 414954 : (have_swap[SWAP_INDEX (short_integer_type_node)]? 2 : 1));
750 : 207477 : builtin_define_with_int_value ("__GCC_ATOMIC_INT_LOCK_FREE",
751 : 414954 : (have_swap[SWAP_INDEX (integer_type_node)]? 2 : 1));
752 : 207477 : builtin_define_with_int_value ("__GCC_ATOMIC_LONG_LOCK_FREE",
753 : 414954 : (have_swap[SWAP_INDEX (long_integer_type_node)]? 2 : 1));
754 : 207477 : builtin_define_with_int_value ("__GCC_ATOMIC_LLONG_LOCK_FREE",
755 : 414954 : (have_swap[SWAP_INDEX (long_long_integer_type_node)]? 2 : 1));
756 : :
757 : : /* If we're dealing with a "set" value that doesn't exactly correspond
758 : : to a boolean truth value, let the library work around that. */
759 : 207477 : builtin_define_with_int_value ("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL",
760 : 207477 : targetm.atomic_test_and_set_trueval);
761 : :
762 : : /* Macros for C++17 hardware interference size constants. Either both or
763 : : neither should be set. */
764 : 207477 : gcc_assert (!param_destruct_interfere_size
765 : : == !param_construct_interfere_size);
766 : 207477 : if (param_destruct_interfere_size)
767 : : {
768 : : /* FIXME The way of communicating these values to the library should be
769 : : part of the C++ ABI, whether macro or builtin. */
770 : 207477 : builtin_define_with_int_value ("__GCC_DESTRUCTIVE_SIZE",
771 : : param_destruct_interfere_size);
772 : 207477 : builtin_define_with_int_value ("__GCC_CONSTRUCTIVE_SIZE",
773 : 207477 : param_construct_interfere_size);
774 : : }
775 : :
776 : : /* ptr_type_node can't be used here since ptr_mode is only set when
777 : : toplev calls backend_init which is not done with -E or pch. */
778 : 207477 : psize = POINTER_SIZE_UNITS;
779 : 207477 : if (psize >= SWAP_LIMIT)
780 : : psize = 0;
781 : 207477 : builtin_define_with_int_value ("__GCC_ATOMIC_POINTER_LOCK_FREE",
782 : 207477 : (have_swap[psize]? 2 : 1));
783 : 207477 : }
784 : :
785 : : /* Return TRUE if the implicit excess precision in which the back-end will
786 : : compute floating-point calculations is not more than the explicit
787 : : excess precision that the front-end will apply under
788 : : -fexcess-precision=[standard|fast|16].
789 : :
790 : : More intuitively, return TRUE if the excess precision proposed by the
791 : : front-end is the excess precision that will actually be used. */
792 : :
793 : : static bool
794 : 11060 : c_cpp_flt_eval_method_iec_559 (void)
795 : : {
796 : 12 : enum excess_precision_type front_end_ept
797 : 11060 : = (flag_excess_precision == EXCESS_PRECISION_STANDARD
798 : 11060 : ? EXCESS_PRECISION_TYPE_STANDARD
799 : : : (flag_excess_precision == EXCESS_PRECISION_FLOAT16
800 : 12 : ? EXCESS_PRECISION_TYPE_FLOAT16
801 : : : EXCESS_PRECISION_TYPE_FAST));
802 : :
803 : 11060 : enum flt_eval_method back_end
804 : 11060 : = targetm.c.excess_precision (EXCESS_PRECISION_TYPE_IMPLICIT);
805 : :
806 : 11060 : enum flt_eval_method front_end
807 : 11060 : = targetm.c.excess_precision (front_end_ept);
808 : :
809 : 11060 : return excess_precision_mode_join (front_end, back_end) == front_end;
810 : : }
811 : :
812 : : /* Return the value for __GCC_IEC_559. */
813 : : static int
814 : 414954 : cpp_iec_559_value (void)
815 : : {
816 : : /* The default is support for IEEE 754-2008. */
817 : 414954 : int ret = 2;
818 : :
819 : : /* float and double must be binary32 and binary64. If they are but
820 : : with reversed NaN convention, at most IEEE 754-1985 is
821 : : supported. */
822 : 414954 : const struct real_format *ffmt
823 : 414954 : = REAL_MODE_FORMAT (TYPE_MODE (float_type_node));
824 : 414954 : const struct real_format *dfmt
825 : 414954 : = REAL_MODE_FORMAT (TYPE_MODE (double_type_node));
826 : 414954 : if (!ffmt->qnan_msb_set || !dfmt->qnan_msb_set)
827 : 0 : ret = 1;
828 : 414954 : if (ffmt->b != 2
829 : 414954 : || ffmt->p != 24
830 : 414954 : || ffmt->pnan != 24
831 : 414954 : || ffmt->emin != -125
832 : 414954 : || ffmt->emax != 128
833 : 414954 : || ffmt->signbit_rw != 31
834 : 414954 : || ffmt->round_towards_zero
835 : 414954 : || !ffmt->has_sign_dependent_rounding
836 : 414954 : || !ffmt->has_nans
837 : 414954 : || !ffmt->has_inf
838 : 414954 : || !ffmt->has_denorm
839 : 414954 : || !ffmt->has_signed_zero
840 : 414954 : || dfmt->b != 2
841 : 414954 : || dfmt->p != 53
842 : 414954 : || dfmt->pnan != 53
843 : 414954 : || dfmt->emin != -1021
844 : 414954 : || dfmt->emax != 1024
845 : 414954 : || dfmt->signbit_rw != 63
846 : 414954 : || dfmt->round_towards_zero
847 : 414954 : || !dfmt->has_sign_dependent_rounding
848 : 414954 : || !dfmt->has_nans
849 : 414954 : || !dfmt->has_inf
850 : 414954 : || !dfmt->has_denorm
851 : 414954 : || !dfmt->has_signed_zero)
852 : 0 : ret = 0;
853 : :
854 : : /* In strict C standards conformance mode, consider a back-end providing
855 : : more implicit excess precision than the explicit excess precision
856 : : the front-end options would require to mean a lack of IEEE 754
857 : : support. For C++, and outside strict conformance mode, do not consider
858 : : this to mean a lack of IEEE 754 support. */
859 : :
860 : 414954 : if (flag_iso
861 : 111884 : && !c_dialect_cxx ()
862 : 426014 : && !c_cpp_flt_eval_method_iec_559 ())
863 : : ret = 0;
864 : :
865 : 414954 : if (flag_iso
866 : 111884 : && !c_dialect_cxx ()
867 : 11060 : && flag_fp_contract_mode == FP_CONTRACT_FAST)
868 : 414954 : ret = 0;
869 : :
870 : : /* Various options are contrary to IEEE 754 semantics. */
871 : 414954 : if (flag_unsafe_math_optimizations
872 : 411874 : || flag_associative_math
873 : 411862 : || flag_reciprocal_math
874 : 411854 : || flag_finite_math_only
875 : 411762 : || !flag_signed_zeros
876 : 411728 : || flag_single_precision_constant)
877 : 3232 : ret = 0;
878 : :
879 : : /* If the target does not support IEEE 754 exceptions and rounding
880 : : modes, consider IEEE 754 support to be absent. */
881 : 414954 : if (!targetm.float_exceptions_rounding_supported_p ())
882 : 386 : ret = 0;
883 : :
884 : 414954 : return ret;
885 : : }
886 : :
887 : : /* Return the value for __GCC_IEC_559_COMPLEX. */
888 : : static int
889 : 207477 : cpp_iec_559_complex_value (void)
890 : : {
891 : : /* The value is no bigger than that of __GCC_IEC_559. */
892 : 0 : int ret = cpp_iec_559_value ();
893 : :
894 : : /* Some options are contrary to the required default state of the
895 : : CX_LIMITED_RANGE pragma. */
896 : 207477 : if (flag_complex_method != 2)
897 : 2870 : ret = 0;
898 : :
899 : 207477 : return ret;
900 : : }
901 : :
902 : : /* Hook that registers front end and target-specific built-ins. */
903 : : void
904 : 207478 : c_cpp_builtins (cpp_reader *pfile)
905 : : {
906 : 207478 : int i;
907 : :
908 : : /* -undef turns off target-specific built-ins. */
909 : 207478 : if (flag_undef)
910 : 1 : return;
911 : :
912 : 207477 : define_language_independent_builtin_macros (pfile);
913 : :
914 : : /* encoding definitions used by users and libraries */
915 : 207477 : builtin_define_with_value ("__GNUC_EXECUTION_CHARSET_NAME",
916 : : cpp_get_narrow_charset_name (pfile), 1);
917 : 207477 : builtin_define_with_value ("__GNUC_WIDE_EXECUTION_CHARSET_NAME",
918 : : cpp_get_wide_charset_name (pfile), 1);
919 : :
920 : 207477 : if (c_dialect_cxx ())
921 : : {
922 : 95768 : int major;
923 : 95768 : parse_basever (&major, NULL, NULL);
924 : 95768 : cpp_define_formatted (pfile, "__GNUG__=%d", major);
925 : : }
926 : :
927 : : /* For stddef.h. They require macros defined in c-common.cc. */
928 : 207477 : c_stddef_cpp_builtins ();
929 : :
930 : : /* Variant of cpp_define which arranges for diagnostics on user #define
931 : : or #undef of the macros. */
932 : 2751723 : auto cpp_define_warn = [] (cpp_reader *pfile, const char *def)
933 : : {
934 : 2544246 : const char *end = strchr (def, '=');
935 : 2544246 : cpp_define (pfile, def);
936 : 2544246 : cpp_warn (pfile, def, end ? end - def : strlen (def));
937 : 2544246 : };
938 : :
939 : 207477 : if (c_dialect_cxx ())
940 : : {
941 : : /* Treat all cpp_define calls in this block for macros starting
942 : : with __cpp_ (for C++20 and later) or __STDCPP_ as cpp_define_warn. */
943 : 5397238 : auto cpp_define = [=] (cpp_reader *pfile, const char *def)
944 : : {
945 : 2517365 : if ((cxx_dialect >= cxx20 && startswith (def, "__cpp_"))
946 : 5483057 : || startswith (def, "__STDCPP_"))
947 : 2417586 : cpp_define_warn (pfile, def);
948 : : else
949 : 2883884 : ::cpp_define (pfile, def);
950 : 5301470 : };
951 : :
952 : 95768 : if (flag_weak && SUPPORTS_ONE_ONLY)
953 : 95738 : cpp_define (pfile, "__GXX_WEAK__=1");
954 : : else
955 : 30 : cpp_define (pfile, "__GXX_WEAK__=0");
956 : :
957 : 95768 : if (warn_deprecated)
958 : 95618 : cpp_define (pfile, "__DEPRECATED");
959 : :
960 : 95768 : if (flag_rtti)
961 : : {
962 : 95075 : cpp_define (pfile, "__GXX_RTTI");
963 : 95075 : cpp_define (pfile, "__cpp_rtti=199711L");
964 : : }
965 : :
966 : 95768 : if (cxx_dialect >= cxx11)
967 : : {
968 : 81808 : cpp_define (pfile, "__GXX_EXPERIMENTAL_CXX0X__");
969 : 81808 : cpp_define (pfile, "__GXX_CONSTEXPR_ASM__");
970 : : }
971 : :
972 : : /* Binary literals have been allowed in g++ before C++11
973 : : and were standardized for C++14. */
974 : 95768 : if (!pedantic || cxx_dialect > cxx11)
975 : 85208 : cpp_define (pfile, "__cpp_binary_literals=201304L");
976 : :
977 : : /* Similarly for hexadecimal floating point literals and C++17. */
978 : 95768 : if (!pedantic || cpp_get_options (parse_in)->extended_numbers)
979 : 84601 : cpp_define (pfile, "__cpp_hex_float=201603L");
980 : :
981 : : /* Arrays of runtime bound were removed from C++14, but we still
982 : : support GNU VLAs. Let's define this macro to a low number
983 : : (corresponding to the initial test release of GNU C++) if we won't
984 : : complain about use of VLAs. */
985 : 95768 : if (c_dialect_cxx ()
986 : 95768 : && (pedantic ? warn_vla == 0 : warn_vla <= 0))
987 : 51994 : cpp_define (pfile, "__cpp_runtime_arrays=198712L");
988 : :
989 : 95768 : if (cxx_dialect >= cxx11)
990 : : {
991 : : /* Set feature test macros for C++11. */
992 : 81808 : if (cxx_dialect <= cxx14)
993 : 6853 : cpp_define (pfile, "__cpp_unicode_characters=200704L");
994 : 81808 : cpp_define (pfile, "__cpp_raw_strings=200710L");
995 : 81808 : cpp_define (pfile, "__cpp_unicode_literals=200710L");
996 : 81808 : cpp_define (pfile, "__cpp_user_defined_literals=200809L");
997 : 81808 : cpp_define (pfile, "__cpp_lambdas=200907L");
998 : 81808 : if (cxx_dialect == cxx11)
999 : 5577 : cpp_define (pfile, "__cpp_constexpr=200704L");
1000 : 81808 : if (cxx_dialect <= cxx14)
1001 : 6853 : cpp_define (pfile, "__cpp_range_based_for=200907L");
1002 : 81808 : if (cxx_dialect <= cxx14)
1003 : 6853 : cpp_define (pfile, "__cpp_static_assert=200410L");
1004 : 81808 : cpp_define (pfile, "__cpp_decltype=200707L");
1005 : 81808 : cpp_define (pfile, "__cpp_attributes=200809L");
1006 : 81808 : cpp_define (pfile, "__cpp_rvalue_reference=200610L");
1007 : 81808 : cpp_define (pfile, "__cpp_rvalue_references=200610L");
1008 : 81808 : cpp_define (pfile, "__cpp_variadic_templates=200704L");
1009 : 81808 : cpp_define (pfile, "__cpp_initializer_lists=200806L");
1010 : 81808 : cpp_define (pfile, "__cpp_delegating_constructors=200604L");
1011 : 81808 : cpp_define (pfile, "__cpp_nsdmi=200809L");
1012 : 81808 : if (!flag_new_inheriting_ctors)
1013 : 200 : cpp_define (pfile, "__cpp_inheriting_constructors=200802L");
1014 : : else
1015 : 81608 : cpp_define (pfile, "__cpp_inheriting_constructors=201511L");
1016 : 81808 : cpp_define (pfile, "__cpp_ref_qualifiers=200710L");
1017 : 81808 : cpp_define (pfile, "__cpp_alias_templates=200704L");
1018 : : }
1019 : 95768 : if (cxx_dialect > cxx11)
1020 : : {
1021 : : /* Set feature test macros for C++14. */
1022 : 76231 : cpp_define (pfile, "__cpp_return_type_deduction=201304L");
1023 : 76231 : if (cxx_dialect <= cxx17)
1024 : : {
1025 : 45957 : cpp_define (pfile, "__cpp_init_captures=201304L");
1026 : 45957 : cpp_define (pfile, "__cpp_generic_lambdas=201304L");
1027 : : }
1028 : 76231 : if (cxx_dialect <= cxx14)
1029 : 1276 : cpp_define (pfile, "__cpp_constexpr=201304L");
1030 : 76231 : cpp_define (pfile, "__cpp_decltype_auto=201304L");
1031 : 76231 : cpp_define (pfile, "__cpp_aggregate_nsdmi=201304L");
1032 : 76231 : cpp_define (pfile, "__cpp_variable_templates=201304L");
1033 : 76231 : cpp_define (pfile, "__cpp_digit_separators=201309L");
1034 : : }
1035 : 95768 : if (cxx_dialect > cxx14)
1036 : : {
1037 : : /* Set feature test macros for C++17. */
1038 : 74955 : cpp_define (pfile, "__cpp_unicode_characters=201411L");
1039 : 74955 : if (cxx_dialect <= cxx23)
1040 : 51538 : cpp_define (pfile, "__cpp_static_assert=201411L");
1041 : 74955 : cpp_define (pfile, "__cpp_namespace_attributes=201411L");
1042 : 74955 : cpp_define (pfile, "__cpp_enumerator_attributes=201411L");
1043 : 74955 : cpp_define (pfile, "__cpp_nested_namespace_definitions=201411L");
1044 : 74955 : cpp_define (pfile, "__cpp_fold_expressions=201603L");
1045 : 74955 : if (cxx_dialect <= cxx17)
1046 : 44681 : cpp_define (pfile, "__cpp_nontype_template_args=201411L");
1047 : 74955 : if (!flag_range_for_ext_temps)
1048 : 49618 : cpp_define (pfile, "__cpp_range_based_for=201603L");
1049 : : else
1050 : : /* This is the C++23 or -std=c++17 -frange-for-ext-temps value. */
1051 : 25337 : cpp_define (pfile, "__cpp_range_based_for=202211L");
1052 : 74955 : if (cxx_dialect <= cxx17)
1053 : 44681 : cpp_define (pfile, "__cpp_constexpr=201603L");
1054 : 74955 : cpp_define (pfile, "__cpp_if_constexpr=201606L");
1055 : 74955 : cpp_define (pfile, "__cpp_capture_star_this=201603L");
1056 : 74955 : cpp_define (pfile, "__cpp_inline_variables=201606L");
1057 : 74955 : cpp_define (pfile, "__cpp_aggregate_bases=201603L");
1058 : 74955 : if (cxx_dialect <= cxx17)
1059 : 44681 : cpp_define (pfile, "__cpp_deduction_guides=201703L");
1060 : 74955 : cpp_define (pfile, "__cpp_noexcept_function_type=201510L");
1061 : : /* Old macro, superseded by
1062 : : __cpp_nontype_template_parameter_auto. */
1063 : 74955 : cpp_define (pfile, "__cpp_template_auto=201606L");
1064 : 74955 : if (cxx_dialect <= cxx23)
1065 : 51538 : cpp_define (pfile, "__cpp_structured_bindings=201606L");
1066 : 74955 : cpp_define (pfile, "__cpp_variadic_using=201611L");
1067 : 74955 : cpp_define (pfile, "__cpp_guaranteed_copy_elision=201606L");
1068 : 74955 : cpp_define (pfile, "__cpp_nontype_template_parameter_auto=201606L");
1069 : : }
1070 : 95768 : if (cxx_dialect > cxx17)
1071 : : {
1072 : : /* Set feature test macros for C++20. */
1073 : 30274 : cpp_define (pfile, "__cpp_init_captures=201803L");
1074 : 30274 : cpp_define (pfile, "__cpp_generic_lambdas=201707L");
1075 : 30274 : cpp_define (pfile, "__cpp_designated_initializers=201707L");
1076 : 30274 : if (cxx_dialect <= cxx20)
1077 : 4942 : cpp_define (pfile, "__cpp_constexpr=202002L");
1078 : 30274 : cpp_define (pfile, "__cpp_constexpr_in_decltype=201711L");
1079 : 30274 : cpp_define (pfile, "__cpp_conditional_explicit=201806L");
1080 : 30274 : cpp_define (pfile, "__cpp_consteval=202211L");
1081 : 30274 : cpp_define (pfile, "__cpp_constinit=201907L");
1082 : 30274 : cpp_define (pfile, "__cpp_deduction_guides=201907L");
1083 : 30274 : cpp_define (pfile, "__cpp_nontype_template_args=201911L");
1084 : 30274 : cpp_define (pfile, "__cpp_nontype_template_parameter_class=201806L");
1085 : 30274 : cpp_define (pfile, "__cpp_impl_destroying_delete=201806L");
1086 : 30274 : cpp_define (pfile, "__cpp_constexpr_dynamic_alloc=201907L");
1087 : 30274 : cpp_define (pfile, "__cpp_impl_three_way_comparison=201907L");
1088 : 30274 : cpp_define (pfile, "__cpp_aggregate_paren_init=201902L");
1089 : 30274 : cpp_define (pfile, "__cpp_using_enum=201907L");
1090 : : }
1091 : 95768 : if (cxx_dialect > cxx20)
1092 : : {
1093 : : /* Set feature test macros for C++23. */
1094 : 25332 : cpp_define (pfile, "__cpp_size_t_suffix=202011L");
1095 : 25332 : cpp_define (pfile, "__cpp_if_consteval=202106L");
1096 : 25332 : cpp_define (pfile, "__cpp_auto_cast=202110L");
1097 : 25332 : if (cxx_dialect <= cxx23)
1098 : 1915 : cpp_define (pfile, "__cpp_constexpr=202211L");
1099 : 25332 : cpp_define (pfile, "__cpp_multidimensional_subscript=202211L");
1100 : 25332 : cpp_define (pfile, "__cpp_named_character_escapes=202207L");
1101 : 25332 : cpp_define (pfile, "__cpp_static_call_operator=202207L");
1102 : 25332 : cpp_define (pfile, "__cpp_implicit_move=202207L");
1103 : 25332 : cpp_define (pfile, "__cpp_explicit_this_parameter=202110L");
1104 : : }
1105 : 95768 : if (cxx_dialect > cxx23)
1106 : : {
1107 : : /* Set feature test macros for C++26. */
1108 : 23417 : cpp_define (pfile, "__cpp_constexpr=202406L");
1109 : 23417 : cpp_define (pfile, "__cpp_constexpr_exceptions=202411L");
1110 : 23417 : cpp_define (pfile, "__cpp_static_assert=202306L");
1111 : 23417 : cpp_define (pfile, "__cpp_placeholder_variables=202306L");
1112 : 23417 : cpp_define (pfile, "__cpp_structured_bindings=202411L");
1113 : 23417 : cpp_define (pfile, "__cpp_deleted_function=202403L");
1114 : 23417 : cpp_define (pfile, "__cpp_variadic_friend=202403L");
1115 : 23417 : cpp_define (pfile, "__cpp_pack_indexing=202311L");
1116 : 23417 : cpp_define (pfile, "__cpp_pp_embed=202502L");
1117 : 23417 : cpp_define (pfile, "__cpp_constexpr_virtual_inheritance=202506L");
1118 : 23417 : cpp_define (pfile, "__cpp_trivial_relocatability=202502L");
1119 : 23417 : cpp_define (pfile, "__cpp_expansion_statements=202506L");
1120 : : }
1121 : 95768 : if (flag_concepts && cxx_dialect > cxx14)
1122 : 30423 : cpp_define (pfile, "__cpp_concepts=202002L");
1123 : 65345 : else if (cxx_dialect >= cxx20)
1124 : 0 : cpp_warn (pfile, "__cpp_concepts");
1125 : 95768 : if (flag_contracts)
1126 : : {
1127 : 155 : cpp_define (pfile, "__cpp_contracts=201906L");
1128 : 155 : cpp_define (pfile, "__cpp_contracts_literal_semantics=201906L");
1129 : 155 : cpp_define (pfile, "__cpp_contracts_roles=201906L");
1130 : : }
1131 : 95613 : else if (cxx_dialect >= cxx26)
1132 : 23392 : cpp_warn (pfile, "__cpp_contracts");
1133 : 95768 : if (flag_modules)
1134 : : /* The std-defined value is 201907L, but I don't think we can
1135 : : claim victory yet. 201810 is the p1103 date. */
1136 : 4366 : cpp_define (pfile, "__cpp_modules=201810L");
1137 : 91402 : else if (cxx_dialect >= cxx20)
1138 : 27301 : cpp_warn (pfile, "__cpp_modules");
1139 : 95768 : if (flag_coroutines)
1140 : 31237 : cpp_define (pfile, "__cpp_impl_coroutine=201902L"); /* n4861, DIS */
1141 : 64531 : else if (cxx_dialect >= cxx20)
1142 : 0 : cpp_warn (pfile, "__cpp_impl_coroutine");
1143 : 95768 : if (flag_tm)
1144 : : /* Use a value smaller than the 201505 specified in
1145 : : the TS, since we don't yet support atomic_cancel. */
1146 : 316 : cpp_define (pfile, "__cpp_transactional_memory=201500L");
1147 : 95768 : if (flag_sized_deallocation)
1148 : 76229 : cpp_define (pfile, "__cpp_sized_deallocation=201309L");
1149 : 19539 : else if (cxx_dialect >= cxx20)
1150 : 1 : cpp_warn (pfile, "__cpp_sized_deallocation");
1151 : 95768 : if (aligned_new_threshold)
1152 : : {
1153 : 74958 : cpp_define (pfile, "__cpp_aligned_new=201606L");
1154 : 74958 : cpp_define_formatted (pfile, "__STDCPP_DEFAULT_NEW_ALIGNMENT__=%d",
1155 : : aligned_new_threshold);
1156 : : }
1157 : 20810 : else if (cxx_dialect >= cxx20)
1158 : 0 : cpp_warn (pfile, "__cpp_aligned_new");
1159 : 95768 : if (cxx_dialect >= cxx17)
1160 : 74955 : cpp_warn (pfile, "__STDCPP_DEFAULT_NEW_ALIGNMENT__");
1161 : 95768 : if (flag_new_ttp)
1162 : 74943 : cpp_define (pfile, "__cpp_template_template_args=201611L");
1163 : 20825 : else if (cxx_dialect >= cxx20)
1164 : 6 : cpp_warn (pfile, "__cpp_template_template_args");
1165 : 95768 : if (flag_threadsafe_statics)
1166 : 95762 : cpp_define (pfile, "__cpp_threadsafe_static_init=200806L");
1167 : 6 : else if (cxx_dialect >= cxx20)
1168 : 2 : cpp_warn (pfile, "__cpp_threadsafe_static_init");
1169 : 95768 : if (flag_char8_t)
1170 : 30332 : cpp_define (pfile, "__cpp_char8_t=202207L");
1171 : 65436 : else if (cxx_dialect >= cxx20)
1172 : 9 : cpp_warn (pfile, "__cpp_char8_t");
1173 : : #ifndef THREAD_MODEL_SPEC
1174 : : /* Targets that define THREAD_MODEL_SPEC need to define
1175 : : __STDCPP_THREADS__ in their config/XXX/XXX-c.c themselves. */
1176 : 95768 : if (cxx_dialect >= cxx11 && strcmp (thread_model, "single") != 0)
1177 : 81808 : cpp_define (pfile, "__STDCPP_THREADS__=1");
1178 : : else
1179 : : #endif
1180 : : if (cxx_dialect >= cxx11)
1181 : : cpp_warn (pfile, "__STDCPP_THREADS__");
1182 : 95768 : if (flag_implicit_constexpr)
1183 : 4 : cpp_define (pfile, "__cpp_implicit_constexpr=20211111L");
1184 : : }
1185 : : /* Note that we define this for C as well, so that we know if
1186 : : __attribute__((cleanup)) will interface with EH. */
1187 : 207477 : if (flag_exceptions)
1188 : : {
1189 : 95041 : cpp_define (pfile, "__EXCEPTIONS");
1190 : 95041 : if (c_dialect_cxx ())
1191 : 94528 : cpp_define (pfile, "__cpp_exceptions=199711L");
1192 : : }
1193 : :
1194 : : /* Represents the C++ ABI version, always defined so it can be used while
1195 : : preprocessing C and assembler. */
1196 : 207477 : if (flag_abi_version == 0)
1197 : : /* We should have set this to something real in c_common_post_options. */
1198 : 0 : gcc_unreachable ();
1199 : 207477 : else if (flag_abi_version == 1)
1200 : : /* Due to a historical accident, this version had the value
1201 : : "102". */
1202 : 0 : builtin_define_with_int_value ("__GXX_ABI_VERSION", 102);
1203 : : else
1204 : : /* Newer versions have values 1002, 1003, .... */
1205 : 207477 : builtin_define_with_int_value ("__GXX_ABI_VERSION",
1206 : 207477 : 1000 + flag_abi_version);
1207 : :
1208 : : /* libgcc needs to know this. */
1209 : 207477 : if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ)
1210 : 0 : cpp_define (pfile, "__USING_SJLJ_EXCEPTIONS__");
1211 : :
1212 : : /* limits.h and stdint.h need to know these. */
1213 : 414954 : builtin_define_type_max ("__SCHAR_MAX__", signed_char_type_node);
1214 : 414954 : builtin_define_type_max ("__SHRT_MAX__", short_integer_type_node);
1215 : 414954 : builtin_define_type_max ("__INT_MAX__", integer_type_node);
1216 : 414954 : builtin_define_type_max ("__LONG_MAX__", long_integer_type_node);
1217 : 414954 : builtin_define_type_max ("__LONG_LONG_MAX__", long_long_integer_type_node);
1218 : 207477 : builtin_define_type_minmax ("__WCHAR_MIN__", "__WCHAR_MAX__",
1219 : : underlying_wchar_type_node);
1220 : 207477 : builtin_define_type_minmax ("__WINT_MIN__", "__WINT_MAX__", wint_type_node);
1221 : 414954 : builtin_define_type_max ("__PTRDIFF_MAX__", ptrdiff_type_node);
1222 : 414954 : builtin_define_type_max ("__SIZE_MAX__", size_type_node);
1223 : :
1224 : : /* These are needed for TS 18661-1. */
1225 : 207477 : builtin_define_type_width ("__SCHAR_WIDTH__", signed_char_type_node,
1226 : : unsigned_char_type_node);
1227 : 207477 : builtin_define_type_width ("__SHRT_WIDTH__", short_integer_type_node,
1228 : : short_unsigned_type_node);
1229 : 207477 : builtin_define_type_width ("__INT_WIDTH__", integer_type_node,
1230 : : unsigned_type_node);
1231 : 207477 : builtin_define_type_width ("__LONG_WIDTH__", long_integer_type_node,
1232 : : long_unsigned_type_node);
1233 : 207477 : builtin_define_type_width ("__LONG_LONG_WIDTH__",
1234 : : long_long_integer_type_node,
1235 : : long_long_unsigned_type_node);
1236 : 207477 : builtin_define_type_width ("__WCHAR_WIDTH__", underlying_wchar_type_node,
1237 : : NULL_TREE);
1238 : 207477 : builtin_define_type_width ("__WINT_WIDTH__", wint_type_node, NULL_TREE);
1239 : 207477 : builtin_define_type_width ("__PTRDIFF_WIDTH__", ptrdiff_type_node, NULL_TREE);
1240 : 207477 : builtin_define_type_width ("__SIZE_WIDTH__", size_type_node, NULL_TREE);
1241 : :
1242 : 207477 : if (!c_dialect_cxx ())
1243 : : {
1244 : 111709 : struct bitint_info info;
1245 : : /* For now, restrict __BITINT_MAXWIDTH__ to what can be represented in
1246 : : wide_int and widest_int. */
1247 : 111709 : if (targetm.c.bitint_type_info (WIDE_INT_MAX_PRECISION - 1, &info))
1248 : : {
1249 : 111709 : cpp_define_formatted (pfile, "__BITINT_MAXWIDTH__=%d",
1250 : : (int) WIDE_INT_MAX_PRECISION - 1);
1251 : 111709 : if (flag_building_libgcc)
1252 : : {
1253 : 984 : scalar_int_mode limb_mode
1254 : 984 : = as_a <scalar_int_mode> (info.limb_mode);
1255 : 984 : cpp_define_formatted (pfile, "__LIBGCC_BITINT_LIMB_WIDTH__=%d",
1256 : 984 : (int) GET_MODE_PRECISION (limb_mode));
1257 : 984 : cpp_define_formatted (pfile, "__LIBGCC_BITINT_ORDER__=%s",
1258 : 984 : info.big_endian
1259 : : ? "__ORDER_BIG_ENDIAN__"
1260 : : : "__ORDER_LITTLE_ENDIAN__");
1261 : : }
1262 : : }
1263 : : }
1264 : :
1265 : 207477 : if (c_dialect_cxx ())
1266 : 191536 : for (i = 0; i < NUM_INT_N_ENTS; i ++)
1267 : 95768 : if (int_n_enabled_p[i])
1268 : : {
1269 : 94974 : char buf[35+20+20];
1270 : :
1271 : : /* These are used to configure the C++ library. */
1272 : :
1273 : 94974 : if (!flag_iso || int_n_data[i].bitsize == POINTER_SIZE)
1274 : : {
1275 : 44612 : sprintf (buf, "__GLIBCXX_TYPE_INT_N_%d=__int%d", i, int_n_data[i].bitsize);
1276 : 44612 : cpp_define (parse_in, buf);
1277 : :
1278 : 44612 : sprintf (buf, "__GLIBCXX_BITSIZE_INT_N_%d=%d", i, int_n_data[i].bitsize);
1279 : 44612 : cpp_define (parse_in, buf);
1280 : : }
1281 : : }
1282 : :
1283 : : /* stdint.h and the testsuite need to know these. */
1284 : 207477 : builtin_define_stdint_macros ();
1285 : :
1286 : : /* Provide information for library headers to determine whether to
1287 : : define macros such as __STDC_IEC_559__ and
1288 : : __STDC_IEC_559_COMPLEX__. */
1289 : 207477 : builtin_define_with_int_value ("__GCC_IEC_559", cpp_iec_559_value ());
1290 : 207477 : builtin_define_with_int_value ("__GCC_IEC_559_COMPLEX",
1291 : 207477 : cpp_iec_559_complex_value ());
1292 : :
1293 : : /* float.h needs these to correctly set FLT_EVAL_METHOD
1294 : :
1295 : : We define two values:
1296 : :
1297 : : __FLT_EVAL_METHOD__
1298 : : Which, depending on the value given for
1299 : : -fpermitted-flt-eval-methods, may be limited to only those values
1300 : : for FLT_EVAL_METHOD defined in C99/C11.
1301 : :
1302 : : __FLT_EVAL_METHOD_TS_18661_3__
1303 : : Which always permits the values for FLT_EVAL_METHOD defined in
1304 : : ISO/IEC TS 18661-3. */
1305 : 207477 : builtin_define_with_int_value ("__FLT_EVAL_METHOD__",
1306 : 207477 : c_flt_eval_method (true));
1307 : 207477 : builtin_define_with_int_value ("__FLT_EVAL_METHOD_TS_18661_3__",
1308 : 207477 : c_flt_eval_method (false));
1309 : :
1310 : : /* And decfloat.h needs this. */
1311 : 207477 : builtin_define_with_int_value ("__DEC_EVAL_METHOD__",
1312 : : TARGET_DEC_EVAL_METHOD);
1313 : :
1314 : 207477 : builtin_define_float_constants ("FLT", "F", "%s", "F", float_type_node);
1315 : : /* Cast the double precision constants. This is needed when single
1316 : : precision constants are specified or when pragma FLOAT_CONST_DECIMAL64
1317 : : is used. The correct result is computed by the compiler when using
1318 : : macros that include a cast. We use a different cast for C++ to avoid
1319 : : problems with -Wold-style-cast. */
1320 : 207477 : builtin_define_float_constants ("DBL", "L",
1321 : 207477 : (c_dialect_cxx ()
1322 : : ? "double(%s)"
1323 : : : "((double)%s)"),
1324 : : "", double_type_node);
1325 : 207477 : builtin_define_float_constants ("LDBL", "L", "%s", "L",
1326 : : long_double_type_node);
1327 : :
1328 : 1659816 : for (int i = 0; i < NUM_FLOATN_NX_TYPES; i++)
1329 : : {
1330 : 1452339 : if (c_dialect_cxx ()
1331 : 670376 : && cxx_dialect > cxx20
1332 : 177324 : && !floatn_nx_types[i].extended)
1333 : : {
1334 : 101328 : char name[sizeof ("__STDCPP_FLOAT128_T__=1")];
1335 : 101328 : if (FLOATN_NX_TYPE_NODE (i) == NULL_TREE)
1336 : : {
1337 : 0 : sprintf (name, "__STDCPP_FLOAT%d_T__", floatn_nx_types[i].n);
1338 : 0 : cpp_warn (pfile, name);
1339 : 0 : continue;
1340 : : }
1341 : 101328 : sprintf (name, "__STDCPP_FLOAT%d_T__=1", floatn_nx_types[i].n);
1342 : 101328 : cpp_define_warn (pfile, name);
1343 : 101328 : }
1344 : 1351011 : else if (FLOATN_NX_TYPE_NODE (i) == NULL_TREE)
1345 : 207477 : continue;
1346 : 1244862 : char prefix[20], csuffix[20];
1347 : 2489724 : sprintf (prefix, "FLT%d%s", floatn_nx_types[i].n,
1348 : 1244862 : floatn_nx_types[i].extended ? "X" : "");
1349 : 1244862 : sprintf (csuffix, "F%d%s", floatn_nx_types[i].n,
1350 : : floatn_nx_types[i].extended ? "x" : "");
1351 : 1244862 : builtin_define_float_constants (prefix, ggc_strdup (csuffix), "%s",
1352 : 1244862 : csuffix, FLOATN_NX_TYPE_NODE (i));
1353 : : }
1354 : 207477 : if (bfloat16_type_node)
1355 : : {
1356 : 207477 : if (c_dialect_cxx () && cxx_dialect > cxx20)
1357 : 25332 : cpp_define_warn (pfile, "__STDCPP_BFLOAT16_T__=1");
1358 : 207477 : builtin_define_float_constants ("BFLT16", "BF16", "%s",
1359 : : "BF16", bfloat16_type_node);
1360 : : }
1361 : 0 : else if (cxx_dialect >= cxx23)
1362 : 0 : cpp_warn (pfile, "__STDCPP_BFLOAT16_T__");
1363 : :
1364 : : /* For float.h. */
1365 : 207477 : if (targetm.decimal_float_supported_p ())
1366 : : {
1367 : 207477 : builtin_define_decimal_float_constants ("DEC32", "DF",
1368 : : dfloat32_type_node);
1369 : 207477 : builtin_define_decimal_float_constants ("DEC64", "DD",
1370 : : dfloat64_type_node);
1371 : 207477 : builtin_define_decimal_float_constants ("DEC128", "DL",
1372 : : dfloat128_type_node);
1373 : 207477 : if (dfloat64x_type_node)
1374 : 207477 : builtin_define_decimal_float_constants ("DEC64X", "D64x",
1375 : : dfloat64x_type_node);
1376 : : }
1377 : :
1378 : : /* For fixed-point fibt, ibit, max, min, and epsilon. */
1379 : 207477 : if (targetm.fixed_point_supported_p ())
1380 : : {
1381 : 0 : builtin_define_fixed_point_constants ("SFRACT", "HR",
1382 : : short_fract_type_node);
1383 : 0 : builtin_define_fixed_point_constants ("USFRACT", "UHR",
1384 : : unsigned_short_fract_type_node);
1385 : 0 : builtin_define_fixed_point_constants ("FRACT", "R",
1386 : : fract_type_node);
1387 : 0 : builtin_define_fixed_point_constants ("UFRACT", "UR",
1388 : : unsigned_fract_type_node);
1389 : 0 : builtin_define_fixed_point_constants ("LFRACT", "LR",
1390 : : long_fract_type_node);
1391 : 0 : builtin_define_fixed_point_constants ("ULFRACT", "ULR",
1392 : : unsigned_long_fract_type_node);
1393 : 0 : builtin_define_fixed_point_constants ("LLFRACT", "LLR",
1394 : : long_long_fract_type_node);
1395 : 0 : builtin_define_fixed_point_constants ("ULLFRACT", "ULLR",
1396 : : unsigned_long_long_fract_type_node);
1397 : 0 : builtin_define_fixed_point_constants ("SACCUM", "HK",
1398 : : short_accum_type_node);
1399 : 0 : builtin_define_fixed_point_constants ("USACCUM", "UHK",
1400 : : unsigned_short_accum_type_node);
1401 : 0 : builtin_define_fixed_point_constants ("ACCUM", "K",
1402 : : accum_type_node);
1403 : 0 : builtin_define_fixed_point_constants ("UACCUM", "UK",
1404 : : unsigned_accum_type_node);
1405 : 0 : builtin_define_fixed_point_constants ("LACCUM", "LK",
1406 : : long_accum_type_node);
1407 : 0 : builtin_define_fixed_point_constants ("ULACCUM", "ULK",
1408 : : unsigned_long_accum_type_node);
1409 : 0 : builtin_define_fixed_point_constants ("LLACCUM", "LLK",
1410 : : long_long_accum_type_node);
1411 : 0 : builtin_define_fixed_point_constants ("ULLACCUM", "ULLK",
1412 : : unsigned_long_long_accum_type_node);
1413 : :
1414 : 0 : builtin_define_fixed_point_constants ("QQ", "", qq_type_node);
1415 : 0 : builtin_define_fixed_point_constants ("HQ", "", hq_type_node);
1416 : 0 : builtin_define_fixed_point_constants ("SQ", "", sq_type_node);
1417 : 0 : builtin_define_fixed_point_constants ("DQ", "", dq_type_node);
1418 : 0 : builtin_define_fixed_point_constants ("TQ", "", tq_type_node);
1419 : 0 : builtin_define_fixed_point_constants ("UQQ", "", uqq_type_node);
1420 : 0 : builtin_define_fixed_point_constants ("UHQ", "", uhq_type_node);
1421 : 0 : builtin_define_fixed_point_constants ("USQ", "", usq_type_node);
1422 : 0 : builtin_define_fixed_point_constants ("UDQ", "", udq_type_node);
1423 : 0 : builtin_define_fixed_point_constants ("UTQ", "", utq_type_node);
1424 : 0 : builtin_define_fixed_point_constants ("HA", "", ha_type_node);
1425 : 0 : builtin_define_fixed_point_constants ("SA", "", sa_type_node);
1426 : 0 : builtin_define_fixed_point_constants ("DA", "", da_type_node);
1427 : 0 : builtin_define_fixed_point_constants ("TA", "", ta_type_node);
1428 : 0 : builtin_define_fixed_point_constants ("UHA", "", uha_type_node);
1429 : 0 : builtin_define_fixed_point_constants ("USA", "", usa_type_node);
1430 : 0 : builtin_define_fixed_point_constants ("UDA", "", uda_type_node);
1431 : 0 : builtin_define_fixed_point_constants ("UTA", "", uta_type_node);
1432 : : }
1433 : :
1434 : : /* For libgcc-internal use only. */
1435 : 207477 : if (flag_building_libgcc)
1436 : : {
1437 : : /* Properties of floating-point modes for libgcc2.c. */
1438 : 984 : opt_scalar_float_mode mode_iter;
1439 : 6888 : FOR_EACH_MODE_IN_CLASS (mode_iter, MODE_FLOAT)
1440 : : {
1441 : 5904 : scalar_float_mode mode = mode_iter.require ();
1442 : 5904 : const char *name = GET_MODE_NAME (mode);
1443 : 5904 : const size_t name_len = strlen (name);
1444 : 5904 : char float_h_prefix[16] = "";
1445 : 5904 : char *macro_name
1446 : 5904 : = XALLOCAVEC (char, name_len + sizeof ("__LIBGCC__MANT_DIG__"));
1447 : 5904 : sprintf (macro_name, "__LIBGCC_%s_MANT_DIG__", name);
1448 : 11808 : builtin_define_with_int_value (macro_name,
1449 : 5904 : REAL_MODE_FORMAT (mode)->p);
1450 : 5904 : if (!targetm.scalar_mode_supported_p (mode)
1451 : 5904 : || !targetm.libgcc_floating_mode_supported_p (mode))
1452 : 0 : continue;
1453 : 5904 : macro_name = XALLOCAVEC (char, name_len
1454 : : + sizeof ("__LIBGCC_HAS__MODE__"));
1455 : 5904 : sprintf (macro_name, "__LIBGCC_HAS_%s_MODE__", name);
1456 : 5904 : cpp_define (pfile, macro_name);
1457 : 5904 : macro_name = XALLOCAVEC (char, name_len
1458 : : + sizeof ("__LIBGCC__FUNC_EXT__"));
1459 : 5904 : sprintf (macro_name, "__LIBGCC_%s_FUNC_EXT__", name);
1460 : 5904 : char suffix[20] = "";
1461 : 5904 : if (mode == TYPE_MODE (double_type_node))
1462 : : {
1463 : : /* Empty suffix correct. */
1464 : 984 : memcpy (float_h_prefix, "DBL", 4);
1465 : : }
1466 : 4920 : else if (mode == TYPE_MODE (float_type_node))
1467 : : {
1468 : 984 : suffix[0] = 'f';
1469 : 984 : memcpy (float_h_prefix, "FLT", 4);
1470 : : }
1471 : 3936 : else if (mode == TYPE_MODE (long_double_type_node))
1472 : : {
1473 : 984 : suffix[0] = 'l';
1474 : 984 : memcpy (float_h_prefix, "LDBL", 5);
1475 : : }
1476 : 2952 : else if (bfloat16_type_node
1477 : 2952 : && mode == TYPE_MODE (bfloat16_type_node))
1478 : : {
1479 : 984 : memcpy (suffix, "bf16", 5);
1480 : 984 : memcpy (float_h_prefix, "BFLT16", 7);
1481 : : }
1482 : : else
1483 : : {
1484 : 4920 : bool found_suffix = false;
1485 : 4920 : for (int i = 0; i < NUM_FLOATN_NX_TYPES; i++)
1486 : 4920 : if (FLOATN_NX_TYPE_NODE (i) != NULL_TREE
1487 : 4920 : && mode == TYPE_MODE (FLOATN_NX_TYPE_NODE (i)))
1488 : : {
1489 : 3936 : sprintf (suffix, "f%d%s", floatn_nx_types[i].n,
1490 : 1968 : floatn_nx_types[i].extended ? "x" : "");
1491 : 1968 : found_suffix = true;
1492 : 1968 : sprintf (float_h_prefix, "FLT%d%s", floatn_nx_types[i].n,
1493 : : floatn_nx_types[i].extended ? "X" : "");
1494 : 1968 : break;
1495 : : }
1496 : 1968 : gcc_assert (found_suffix);
1497 : : }
1498 : 5904 : builtin_define_with_value (macro_name, suffix, 0);
1499 : :
1500 : : /* The way __LIBGCC_*_EXCESS_PRECISION__ is used is about
1501 : : eliminating excess precision from results assigned to
1502 : : variables - meaning it should be about the implicit excess
1503 : : precision only. */
1504 : 5904 : bool excess_precision = false;
1505 : 5904 : machine_mode float16_type_mode = (float16_type_node
1506 : 5904 : ? TYPE_MODE (float16_type_node)
1507 : 5904 : : VOIDmode);
1508 : 5904 : machine_mode bfloat16_type_mode = (bfloat16_type_node
1509 : 5904 : ? TYPE_MODE (bfloat16_type_node)
1510 : 5904 : : VOIDmode);
1511 : 5904 : switch (targetm.c.excess_precision
1512 : 5904 : (EXCESS_PRECISION_TYPE_IMPLICIT))
1513 : : {
1514 : 2898 : case FLT_EVAL_METHOD_UNPREDICTABLE:
1515 : 2898 : case FLT_EVAL_METHOD_PROMOTE_TO_LONG_DOUBLE:
1516 : 2898 : excess_precision = (mode == float16_type_mode
1517 : 2415 : || mode == bfloat16_type_mode
1518 : 1932 : || mode == TYPE_MODE (float_type_node)
1519 : 4347 : || mode == TYPE_MODE (double_type_node));
1520 : : break;
1521 : :
1522 : 0 : case FLT_EVAL_METHOD_PROMOTE_TO_DOUBLE:
1523 : 0 : excess_precision = (mode == float16_type_mode
1524 : 0 : || mode == bfloat16_type_mode
1525 : 0 : || mode == TYPE_MODE (float_type_node));
1526 : : break;
1527 : 3006 : case FLT_EVAL_METHOD_PROMOTE_TO_FLOAT:
1528 : 3006 : excess_precision = (mode == float16_type_mode
1529 : 3006 : || mode == bfloat16_type_mode);
1530 : : break;
1531 : : case FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16:
1532 : : excess_precision = false;
1533 : : break;
1534 : 0 : default:
1535 : 0 : gcc_unreachable ();
1536 : : }
1537 : 5904 : macro_name = XALLOCAVEC (char, name_len
1538 : : + sizeof ("__LIBGCC__EXCESS_PRECISION__"));
1539 : 5904 : sprintf (macro_name, "__LIBGCC_%s_EXCESS_PRECISION__", name);
1540 : 5904 : builtin_define_with_int_value (macro_name, excess_precision);
1541 : :
1542 : 5904 : char val_name[64];
1543 : :
1544 : 5904 : macro_name = XALLOCAVEC (char, name_len
1545 : : + sizeof ("__LIBGCC__EPSILON__"));
1546 : 5904 : sprintf (macro_name, "__LIBGCC_%s_EPSILON__", name);
1547 : 5904 : sprintf (val_name, "__%s_EPSILON__", float_h_prefix);
1548 : 5904 : builtin_define_with_value (macro_name, val_name, 0);
1549 : :
1550 : 5904 : macro_name = XALLOCAVEC (char, name_len + sizeof ("__LIBGCC__MAX__"));
1551 : 5904 : sprintf (macro_name, "__LIBGCC_%s_MAX__", name);
1552 : 5904 : sprintf (val_name, "__%s_MAX__", float_h_prefix);
1553 : 5904 : builtin_define_with_value (macro_name, val_name, 0);
1554 : :
1555 : 5904 : macro_name = XALLOCAVEC (char, name_len + sizeof ("__LIBGCC__MIN__"));
1556 : 5904 : sprintf (macro_name, "__LIBGCC_%s_MIN__", name);
1557 : 5904 : sprintf (val_name, "__%s_MIN__", float_h_prefix);
1558 : 5904 : builtin_define_with_value (macro_name, val_name, 0);
1559 : :
1560 : : #ifdef HAVE_adddf3
1561 : 5904 : builtin_define_with_int_value ("__LIBGCC_HAVE_HWDBL__",
1562 : 5904 : HAVE_adddf3);
1563 : : #endif
1564 : : }
1565 : :
1566 : : /* For libgcc crtstuff.c and libgcc2.c. */
1567 : 984 : builtin_define_with_int_value ("__LIBGCC_EH_TABLES_CAN_BE_READ_ONLY__",
1568 : : EH_TABLES_CAN_BE_READ_ONLY);
1569 : : #ifdef EH_FRAME_SECTION_NAME
1570 : 984 : builtin_define_with_value ("__LIBGCC_EH_FRAME_SECTION_NAME__",
1571 : : EH_FRAME_SECTION_NAME, 1);
1572 : : #endif
1573 : : #ifdef CTORS_SECTION_ASM_OP
1574 : : builtin_define_with_value ("__LIBGCC_CTORS_SECTION_ASM_OP__",
1575 : : CTORS_SECTION_ASM_OP, 1);
1576 : : #endif
1577 : : #ifdef DTORS_SECTION_ASM_OP
1578 : : builtin_define_with_value ("__LIBGCC_DTORS_SECTION_ASM_OP__",
1579 : : DTORS_SECTION_ASM_OP, 1);
1580 : : #endif
1581 : : #ifdef TEXT_SECTION_ASM_OP
1582 : 984 : builtin_define_with_value ("__LIBGCC_TEXT_SECTION_ASM_OP__",
1583 : : TEXT_SECTION_ASM_OP, 1);
1584 : : #endif
1585 : : #ifdef INIT_SECTION_ASM_OP
1586 : : builtin_define_with_value ("__LIBGCC_INIT_SECTION_ASM_OP__",
1587 : : INIT_SECTION_ASM_OP, 1);
1588 : : #endif
1589 : : #ifdef INIT_ARRAY_SECTION_ASM_OP
1590 : : /* Despite the name of this target macro, the expansion is not
1591 : : actually used, and may be empty rather than a string
1592 : : constant. */
1593 : 984 : cpp_define (pfile, "__LIBGCC_INIT_ARRAY_SECTION_ASM_OP__");
1594 : : #endif
1595 : :
1596 : : /* For libgcc enable-execute-stack.c. */
1597 : 984 : builtin_define_with_int_value ("__LIBGCC_TRAMPOLINE_SIZE__",
1598 : 984 : TRAMPOLINE_SIZE);
1599 : :
1600 : : /* For libgcc generic-morestack.c and unwinder code. */
1601 : 984 : if (STACK_GROWS_DOWNWARD)
1602 : 984 : cpp_define (pfile, "__LIBGCC_STACK_GROWS_DOWNWARD__");
1603 : :
1604 : : /* For libgcc unwinder code. */
1605 : : #ifdef DONT_USE_BUILTIN_SETJMP
1606 : : cpp_define (pfile, "__LIBGCC_DONT_USE_BUILTIN_SETJMP__");
1607 : : #endif
1608 : : #ifdef DWARF_ALT_FRAME_RETURN_COLUMN
1609 : : builtin_define_with_int_value ("__LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__",
1610 : : DWARF_ALT_FRAME_RETURN_COLUMN);
1611 : : #endif
1612 : 984 : builtin_define_with_int_value ("__LIBGCC_DWARF_FRAME_REGISTERS__",
1613 : : DWARF_FRAME_REGISTERS);
1614 : 984 : builtin_define_with_int_value ("__LIBGCC_DWARF_CIE_DATA_ALIGNMENT__",
1615 : 984 : DWARF_CIE_DATA_ALIGNMENT);
1616 : :
1617 : : #ifdef EH_RETURN_STACKADJ_RTX
1618 : 984 : cpp_define (pfile, "__LIBGCC_EH_RETURN_STACKADJ_RTX__");
1619 : : #endif
1620 : : #ifdef JMP_BUF_SIZE
1621 : : builtin_define_with_int_value ("__LIBGCC_JMP_BUF_SIZE__",
1622 : : JMP_BUF_SIZE);
1623 : : #endif
1624 : 984 : builtin_define_with_int_value ("__LIBGCC_STACK_POINTER_REGNUM__",
1625 : : STACK_POINTER_REGNUM);
1626 : :
1627 : : /* For libgcov. */
1628 : 984 : builtin_define_with_int_value ("__LIBGCC_VTABLE_USES_DESCRIPTORS__",
1629 : : TARGET_VTABLE_USES_DESCRIPTORS);
1630 : 984 : builtin_define_with_int_value ("__LIBGCC_HAVE_LIBATOMIC",
1631 : 984 : targetm.have_libatomic);
1632 : : }
1633 : :
1634 : : /* For use in assembly language. */
1635 : 207477 : builtin_define_with_value ("__REGISTER_PREFIX__", REGISTER_PREFIX, 0);
1636 : 207477 : builtin_define_with_value ("__USER_LABEL_PREFIX__", user_label_prefix, 0);
1637 : :
1638 : : /* Misc. */
1639 : 207477 : if (flag_gnu89_inline)
1640 : 20786 : cpp_define (pfile, "__GNUC_GNU_INLINE__");
1641 : : else
1642 : 186691 : cpp_define (pfile, "__GNUC_STDC_INLINE__");
1643 : :
1644 : 207477 : if (flag_no_inline)
1645 : 95728 : cpp_define (pfile, "__NO_INLINE__");
1646 : :
1647 : 207477 : if (flag_iso)
1648 : 55942 : cpp_define (pfile, "__STRICT_ANSI__");
1649 : :
1650 : 207477 : if (!flag_signed_char)
1651 : 26 : cpp_define (pfile, "__CHAR_UNSIGNED__");
1652 : :
1653 : 207477 : if (c_dialect_cxx () && TYPE_UNSIGNED (wchar_type_node))
1654 : 7 : cpp_define (pfile, "__WCHAR_UNSIGNED__");
1655 : :
1656 : 207477 : cpp_atomic_builtins (pfile);
1657 : :
1658 : : /* Show support for __builtin_speculation_safe_value () if the target
1659 : : has been updated to fully support it. */
1660 : 207477 : if (targetm.have_speculation_safe_value (false))
1661 : 207477 : cpp_define (pfile, "__HAVE_SPECULATION_SAFE_VALUE");
1662 : :
1663 : : #ifdef DWARF2_UNWIND_INFO
1664 : 207477 : if (dwarf2out_do_cfi_asm ())
1665 : 207438 : cpp_define (pfile, "__GCC_HAVE_DWARF2_CFI_ASM");
1666 : : #endif
1667 : :
1668 : : /* Make the choice of ObjC runtime visible to source code. */
1669 : 207477 : if (c_dialect_objc () && flag_next_runtime)
1670 : 0 : cpp_define (pfile, "__NEXT_RUNTIME__");
1671 : :
1672 : : /* Show the availability of some target pragmas. */
1673 : 207477 : cpp_define (pfile, "__PRAGMA_REDEFINE_EXTNAME");
1674 : :
1675 : : /* Make the choice of the stack protector runtime visible to source code.
1676 : : The macro names and values here were chosen for compatibility with an
1677 : : earlier implementation, i.e. ProPolice. */
1678 : 207477 : if (flag_stack_protect == SPCT_FLAG_EXPLICIT)
1679 : 7 : cpp_define (pfile, "__SSP_EXPLICIT__=4");
1680 : 207477 : if (flag_stack_protect == SPCT_FLAG_STRONG)
1681 : 183 : cpp_define (pfile, "__SSP_STRONG__=3");
1682 : 207477 : if (flag_stack_protect == SPCT_FLAG_ALL)
1683 : 20 : cpp_define (pfile, "__SSP_ALL__=2");
1684 : 207457 : else if (flag_stack_protect == SPCT_FLAG_DEFAULT)
1685 : 57 : cpp_define (pfile, "__SSP__=1");
1686 : :
1687 : 207477 : if (flag_openacc)
1688 : 1718 : cpp_define (pfile, "_OPENACC=201711");
1689 : :
1690 : 207477 : if (flag_openmp)
1691 : 6017 : cpp_define (pfile, "_OPENMP=201511");
1692 : :
1693 : 414954 : for (i = 0; i < NUM_INT_N_ENTS; i ++)
1694 : 207477 : if (int_n_enabled_p[i])
1695 : : {
1696 : 202163 : char buf[15+20];
1697 : 202163 : sprintf(buf, "__SIZEOF_INT%d__", int_n_data[i].bitsize);
1698 : 202163 : builtin_define_type_sizeof (buf,
1699 : : int_n_trees[i].signed_type);
1700 : : }
1701 : 207477 : builtin_define_type_sizeof ("__SIZEOF_WCHAR_T__", wchar_type_node);
1702 : 207477 : builtin_define_type_sizeof ("__SIZEOF_WINT_T__", wint_type_node);
1703 : 207477 : builtin_define_type_sizeof ("__SIZEOF_PTRDIFF_T__",
1704 : : unsigned_ptrdiff_type_node);
1705 : :
1706 : : /* A straightforward target hook doesn't work, because of problems
1707 : : linking that hook's body when part of non-C front ends. */
1708 : : # define preprocessing_asm_p() (cpp_get_options (pfile)->lang == CLK_ASM)
1709 : : # define preprocessing_trad_p() (cpp_get_options (pfile)->traditional)
1710 : : # define builtin_define(TXT) cpp_define (pfile, TXT)
1711 : : # define builtin_assert(TXT) cpp_assert (pfile, TXT)
1712 : 207477 : TARGET_CPU_CPP_BUILTINS ();
1713 : 207477 : TARGET_OS_CPP_BUILTINS ();
1714 : 207477 : TARGET_OBJFMT_CPP_BUILTINS ();
1715 : :
1716 : : /* Support the __declspec keyword by turning them into attributes.
1717 : : Note that the current way we do this may result in a collision
1718 : : with predefined attributes later on. This can be solved by using
1719 : : one attribute, say __declspec__, and passing args to it. The
1720 : : problem with that approach is that args are not accumulated: each
1721 : : new appearance would clobber any existing args. */
1722 : 207477 : if (TARGET_DECLSPEC)
1723 : : builtin_define ("__declspec(x)=__attribute__((x))");
1724 : :
1725 : : /* If decimal floating point is supported, tell the user if the
1726 : : alternate format (BID) is used instead of the standard (DPD)
1727 : : format. */
1728 : 207477 : if (ENABLE_DECIMAL_FLOAT && ENABLE_DECIMAL_BID_FORMAT)
1729 : 207477 : cpp_define (pfile, "__DECIMAL_BID_FORMAT__");
1730 : : }
1731 : :
1732 : : /* Given NAME, return the command-line option that would make it be
1733 : : a builtin define, or 0 if unrecognized. */
1734 : :
1735 : : diagnostics::option_id
1736 : 3837 : get_option_for_builtin_define (const char *name)
1737 : : {
1738 : 3837 : if (!strcmp (name, "_OPENACC"))
1739 : 4 : return OPT_fopenacc;
1740 : 3833 : if (!strcmp (name, "_OPENMP"))
1741 : 4 : return OPT_fopenmp;
1742 : 3829 : return 0;
1743 : : }
1744 : :
1745 : : /* Pass an object-like macro. If it doesn't lie in the user's
1746 : : namespace, defines it unconditionally. Otherwise define a version
1747 : : with two leading underscores, and another version with two leading
1748 : : and trailing underscores, and define the original only if an ISO
1749 : : standard was not nominated.
1750 : :
1751 : : e.g. passing "unix" defines "__unix", "__unix__" and possibly
1752 : : "unix". Passing "_mips" defines "__mips", "__mips__" and possibly
1753 : : "_mips". */
1754 : : void
1755 : 420268 : builtin_define_std (const char *macro)
1756 : : {
1757 : 420268 : size_t len = strlen (macro);
1758 : 420268 : char *buff = (char *) alloca (len + 5);
1759 : 420268 : char *p = buff + 2;
1760 : 420268 : char *q = p + len;
1761 : :
1762 : : /* prepend __ (or maybe just _) if in user's namespace. */
1763 : 420268 : memcpy (p, macro, len + 1);
1764 : 420268 : if (!( *p == '_' && (p[1] == '_' || ISUPPER (p[1]))))
1765 : : {
1766 : 420268 : if (*p != '_')
1767 : 420268 : *--p = '_';
1768 : 420268 : if (p[1] != '_')
1769 : 420268 : *--p = '_';
1770 : : }
1771 : 420268 : cpp_define (parse_in, p);
1772 : :
1773 : : /* If it was in user's namespace... */
1774 : 420268 : if (p != buff + 2)
1775 : : {
1776 : : /* Define the macro with leading and following __. */
1777 : 420268 : if (q[-1] != '_')
1778 : 420268 : *q++ = '_';
1779 : 420268 : if (q[-2] != '_')
1780 : 420268 : *q++ = '_';
1781 : 420268 : *q = '\0';
1782 : 420268 : cpp_define (parse_in, p);
1783 : :
1784 : : /* Finally, define the original macro if permitted. */
1785 : 420268 : if (!flag_iso)
1786 : 308334 : cpp_define (parse_in, macro);
1787 : : }
1788 : 420268 : }
1789 : :
1790 : : /* Pass an object-like macro and a value to define it to. The third
1791 : : parameter says whether or not to turn the value into a string
1792 : : constant. */
1793 : : void
1794 : 18620711 : builtin_define_with_value (const char *macro, const char *expansion, int is_str)
1795 : : {
1796 : 18620711 : char *buf;
1797 : 18620711 : size_t mlen = strlen (macro);
1798 : 18620711 : size_t elen = strlen (expansion);
1799 : 18620711 : size_t extra = 2; /* space for an = and a NUL */
1800 : :
1801 : 18620711 : if (is_str)
1802 : : {
1803 : 416922 : char *quoted_expansion = (char *) alloca (elen * 4 + 1);
1804 : 416922 : const char *p;
1805 : 416922 : char *q;
1806 : 416922 : extra += 2; /* space for two quote marks */
1807 : 3129047 : for (p = expansion, q = quoted_expansion; *p; p++)
1808 : : {
1809 : 2712125 : switch (*p)
1810 : : {
1811 : 0 : case '\n':
1812 : 0 : *q++ = '\\';
1813 : 0 : *q++ = 'n';
1814 : 0 : break;
1815 : :
1816 : 984 : case '\t':
1817 : 984 : *q++ = '\\';
1818 : 984 : *q++ = 't';
1819 : 984 : break;
1820 : :
1821 : 0 : case '\\':
1822 : 0 : *q++ = '\\';
1823 : 0 : *q++ = '\\';
1824 : 0 : break;
1825 : :
1826 : 0 : case '"':
1827 : 0 : *q++ = '\\';
1828 : 0 : *q++ = '"';
1829 : 0 : break;
1830 : :
1831 : 2711141 : default:
1832 : 2711141 : if (ISPRINT ((unsigned char) *p))
1833 : 2711141 : *q++ = *p;
1834 : : else
1835 : : {
1836 : 0 : sprintf (q, "\\%03o", (unsigned char) *p);
1837 : 0 : q += 4;
1838 : : }
1839 : : }
1840 : : }
1841 : 416922 : *q = '\0';
1842 : 416922 : expansion = quoted_expansion;
1843 : 416922 : elen = q - expansion;
1844 : : }
1845 : :
1846 : 18620711 : buf = (char *) alloca (mlen + elen + extra);
1847 : 18620711 : if (is_str)
1848 : 416922 : sprintf (buf, "%s=\"%s\"", macro, expansion);
1849 : : else
1850 : 18203789 : sprintf (buf, "%s=%s", macro, expansion);
1851 : :
1852 : 18620711 : cpp_define (parse_in, buf);
1853 : 18620711 : }
1854 : :
1855 : :
1856 : : /* Pass an object-like macro and an integer value to define it to. */
1857 : : void
1858 : 27769326 : builtin_define_with_int_value (const char *macro, HOST_WIDE_INT value)
1859 : : {
1860 : 27769326 : char *buf;
1861 : 27769326 : size_t mlen = strlen (macro);
1862 : 27769326 : size_t vlen = 18;
1863 : 27769326 : size_t extra = 2; /* space for = and NUL. */
1864 : :
1865 : 27769326 : buf = (char *) alloca (mlen + vlen + extra);
1866 : 27769326 : memcpy (buf, macro, mlen);
1867 : 27769326 : buf[mlen] = '=';
1868 : 27769326 : sprintf (buf + mlen + 1, HOST_WIDE_INT_PRINT_DEC, value);
1869 : :
1870 : 27769326 : cpp_define (parse_in, buf);
1871 : 27769326 : }
1872 : :
1873 : : /* builtin_define_with_hex_fp_value is very expensive, so the following
1874 : : array and function allows it to be done lazily when __DBL_MAX__
1875 : : etc. is first used. */
1876 : :
1877 : : struct GTY(()) lazy_hex_fp_value_struct
1878 : : {
1879 : : const char *hex_str;
1880 : : machine_mode mode;
1881 : : int digits;
1882 : : const char *fp_suffix;
1883 : : };
1884 : : /* Number of the expensive to compute macros we should evaluate lazily.
1885 : : Each builtin_define_float_constants invocation calls
1886 : : builtin_define_with_hex_fp_value 5 times and builtin_define_float_constants
1887 : : is called for FLT, DBL, LDBL and up to NUM_FLOATN_NX_TYPES times for
1888 : : FLTNN*. */
1889 : : #define LAZY_HEX_FP_VALUES_CNT (5 * (3 + NUM_FLOATN_NX_TYPES))
1890 : : static GTY(()) struct lazy_hex_fp_value_struct
1891 : : lazy_hex_fp_values[LAZY_HEX_FP_VALUES_CNT];
1892 : : static GTY(()) unsigned lazy_hex_fp_value_count;
1893 : :
1894 : : static void
1895 : 321310 : lazy_hex_fp_value (cpp_reader *, cpp_macro *macro, unsigned num)
1896 : : {
1897 : 321310 : REAL_VALUE_TYPE real;
1898 : 321310 : char dec_str[64], buf1[256];
1899 : :
1900 : 321310 : gcc_checking_assert (num < lazy_hex_fp_value_count);
1901 : :
1902 : 321310 : real_from_string (&real, lazy_hex_fp_values[num].hex_str);
1903 : 321310 : real_to_decimal_for_mode (dec_str, &real, sizeof (dec_str),
1904 : 321310 : lazy_hex_fp_values[num].digits, 0,
1905 : : lazy_hex_fp_values[num].mode);
1906 : :
1907 : 321310 : size_t len
1908 : 321310 : = sprintf (buf1, "%s%s", dec_str, lazy_hex_fp_values[num].fp_suffix);
1909 : 321310 : gcc_assert (len < sizeof (buf1));
1910 : 424792 : for (unsigned idx = 0; idx < macro->count; idx++)
1911 : 424792 : if (macro->exp.tokens[idx].type == CPP_NUMBER)
1912 : : {
1913 : 321310 : macro->exp.tokens[idx].val.str.len = len;
1914 : 321310 : macro->exp.tokens[idx].val.str.text
1915 : 321310 : = (const unsigned char *) ggc_strdup (buf1);
1916 : 321310 : return;
1917 : : }
1918 : :
1919 : : /* We must have replaced a token. */
1920 : 0 : gcc_unreachable ();
1921 : : }
1922 : :
1923 : : /* Pass an object-like macro a hexadecimal floating-point value. */
1924 : : static void
1925 : 10373850 : builtin_define_with_hex_fp_value (const char *macro,
1926 : : tree type, int digits,
1927 : : const char *hex_str,
1928 : : const char *fp_suffix,
1929 : : const char *fp_cast)
1930 : : {
1931 : 10373850 : REAL_VALUE_TYPE real;
1932 : 10373850 : char dec_str[64], buf[256], buf1[128], buf2[64];
1933 : :
1934 : : /* This is very expensive, so if possible expand them lazily. */
1935 : 10373850 : if (lazy_hex_fp_value_count < LAZY_HEX_FP_VALUES_CNT
1936 : 10373850 : && flag_dump_macros == 0
1937 : 10331450 : && flag_dump_go_spec == NULL
1938 : 10331250 : && !cpp_get_options (parse_in)->traditional)
1939 : : {
1940 : 10211500 : if (lazy_hex_fp_value_count == 0)
1941 : 204230 : cpp_get_callbacks (parse_in)->user_lazy_macro = lazy_hex_fp_value;
1942 : 10211500 : sprintf (buf2, fp_cast, "1.1");
1943 : 10211500 : sprintf (buf1, "%s=%s", macro, buf2);
1944 : 10211500 : cpp_define (parse_in, buf1);
1945 : 10211500 : struct cpp_hashnode *node = C_CPP_HASHNODE (get_identifier (macro));
1946 : 10211500 : lazy_hex_fp_values[lazy_hex_fp_value_count].hex_str
1947 : 10211500 : = ggc_strdup (hex_str);
1948 : 10211500 : lazy_hex_fp_values[lazy_hex_fp_value_count].mode = TYPE_MODE (type);
1949 : 10211500 : lazy_hex_fp_values[lazy_hex_fp_value_count].digits = digits;
1950 : 10211500 : lazy_hex_fp_values[lazy_hex_fp_value_count].fp_suffix = fp_suffix;
1951 : 10211500 : cpp_define_lazily (parse_in, node, lazy_hex_fp_value_count++);
1952 : 10211500 : return;
1953 : : }
1954 : :
1955 : : /* Hex values are really cool and convenient, except that they're
1956 : : not supported in strict ISO C90 mode. First, the "p-" sequence
1957 : : is not valid as part of a preprocessor number. Second, we get a
1958 : : pedwarn from the preprocessor, which has no context, so we can't
1959 : : suppress the warning with __extension__.
1960 : :
1961 : : So instead what we do is construct the number in hex (because
1962 : : it's easy to get the exact correct value), parse it as a real,
1963 : : then print it back out as decimal. */
1964 : :
1965 : 162350 : real_from_string (&real, hex_str);
1966 : 162350 : real_to_decimal_for_mode (dec_str, &real, sizeof (dec_str), digits, 0,
1967 : 162350 : TYPE_MODE (type));
1968 : :
1969 : : /* Assemble the macro in the following fashion
1970 : : macro = fp_cast [dec_str fp_suffix] */
1971 : 162350 : sprintf (buf2, "%s%s", dec_str, fp_suffix);
1972 : 162350 : sprintf (buf1, fp_cast, buf2);
1973 : 162350 : sprintf (buf, "%s=%s", macro, buf1);
1974 : :
1975 : 162350 : cpp_define (parse_in, buf);
1976 : : }
1977 : :
1978 : : /* Return a string constant for the suffix for a value of type TYPE
1979 : : promoted according to the integer promotions. The type must be one
1980 : : of the standard integer type nodes. */
1981 : :
1982 : : static const char *
1983 : 9958896 : type_suffix (tree type)
1984 : : {
1985 : 9958896 : static const char *const suffixes[] = { "", "U", "L", "UL", "LL", "ULL" };
1986 : 9958896 : int unsigned_suffix;
1987 : 9958896 : int is_long;
1988 : 9958896 : int tp = TYPE_PRECISION (type);
1989 : :
1990 : 9958896 : if (type == long_long_integer_type_node
1991 : 9718929 : || type == long_long_unsigned_type_node
1992 : 19645335 : || tp > TYPE_PRECISION (long_integer_type_node))
1993 : : is_long = 2;
1994 : 9686439 : else if (type == long_integer_type_node
1995 : 7452927 : || type == long_unsigned_type_node
1996 : 15118746 : || tp > TYPE_PRECISION (integer_type_node))
1997 : : is_long = 1;
1998 : 5432307 : else if (type == integer_type_node
1999 : 4171213 : || type == unsigned_type_node
2000 : 3319645 : || type == short_integer_type_node
2001 : 2489737 : || type == short_unsigned_type_node
2002 : 1867293 : || type == signed_char_type_node
2003 : 829908 : || type == unsigned_char_type_node
2004 : : /* ??? "char" is not a signed or unsigned integer type and
2005 : : so is not permitted for the standard typedefs, but some
2006 : : systems use it anyway. */
2007 : 0 : || type == char_type_node)
2008 : : is_long = 0;
2009 : 0 : else if (type == wchar_type_node)
2010 : 0 : return type_suffix (underlying_wchar_type_node);
2011 : : else
2012 : 0 : gcc_unreachable ();
2013 : :
2014 : 9958896 : unsigned_suffix = TYPE_UNSIGNED (type);
2015 : 9958896 : if (TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node))
2016 : 3319645 : unsigned_suffix = 0;
2017 : 9958896 : return suffixes[is_long * 2 + unsigned_suffix];
2018 : : }
2019 : :
2020 : : /* Define MACRO as a <stdint.h> constant-suffix macro for TYPE. */
2021 : : static void
2022 : 2074770 : builtin_define_constants (const char *macro, tree type)
2023 : : {
2024 : 2074770 : const char *suffix;
2025 : 2074770 : char *buf;
2026 : :
2027 : 2074770 : suffix = type_suffix (type);
2028 : :
2029 : 2074770 : if (suffix[0] == 0)
2030 : : {
2031 : 1037385 : buf = (char *) alloca (strlen (macro) + 6);
2032 : 1037385 : sprintf (buf, "%s(c)=c", macro);
2033 : : }
2034 : : else
2035 : : {
2036 : 1037385 : buf = (char *) alloca (strlen (macro) + 9 + strlen (suffix) + 1);
2037 : 1037385 : sprintf (buf, "%s(c)=c ## %s", macro, suffix);
2038 : : }
2039 : :
2040 : 2074770 : cpp_define (parse_in, buf);
2041 : 2074770 : }
2042 : :
2043 : : /* Define MAX for TYPE based on the precision of the type. */
2044 : :
2045 : : static void
2046 : 7261695 : builtin_define_type_max (const char *macro, tree type)
2047 : : {
2048 : 6224310 : builtin_define_type_minmax (NULL, macro, type);
2049 : 2697201 : }
2050 : :
2051 : : /* Given a value with COUNT LSBs set, fill BUF with a hexidecimal
2052 : : representation of that value. For example, a COUNT of 10 would
2053 : : return "0x3ff". */
2054 : :
2055 : : static void
2056 : 7884126 : print_bits_of_hex (char *buf, int bufsz, int count)
2057 : : {
2058 : 7884126 : gcc_assert (bufsz > 3);
2059 : 7884126 : *buf++ = '0';
2060 : 7884126 : *buf++ = 'x';
2061 : 7884126 : bufsz -= 2;
2062 : :
2063 : 7884126 : gcc_assert (count > 0);
2064 : :
2065 : 7884126 : switch (count % 4) {
2066 : : case 0:
2067 : : break;
2068 : 0 : case 1:
2069 : 0 : *buf++ = '1';
2070 : 0 : bufsz --;
2071 : 0 : count -= 1;
2072 : 0 : break;
2073 : 0 : case 2:
2074 : 0 : *buf++ = '3';
2075 : 0 : bufsz --;
2076 : 0 : count -= 2;
2077 : 0 : break;
2078 : 4564481 : case 3:
2079 : 4564481 : *buf++ = '7';
2080 : 4564481 : bufsz --;
2081 : 4564481 : count -= 3;
2082 : 4564481 : break;
2083 : : }
2084 : 83015835 : while (count >= 4)
2085 : : {
2086 : 75131709 : gcc_assert (bufsz > 1);
2087 : 75131709 : *buf++ = 'f';
2088 : 75131709 : bufsz --;
2089 : 75131709 : count -= 4;
2090 : : }
2091 : 7884126 : gcc_assert (bufsz > 0);
2092 : 7884126 : *buf++ = 0;
2093 : 7884126 : }
2094 : :
2095 : : /* Define MIN_MACRO (if not NULL) and MAX_MACRO for TYPE based on the
2096 : : precision of the type. */
2097 : :
2098 : : static void
2099 : 7884126 : builtin_define_type_minmax (const char *min_macro, const char *max_macro,
2100 : : tree type)
2101 : : {
2102 : : #define PBOH_SZ (MAX_BITSIZE_MODE_ANY_INT/4+4)
2103 : 7884126 : char value[PBOH_SZ];
2104 : :
2105 : 7884126 : const char *suffix;
2106 : 7884126 : char *buf;
2107 : 7884126 : int bits;
2108 : :
2109 : 7884126 : bits = TYPE_PRECISION (type) + (TYPE_UNSIGNED (type) ? 0 : -1);
2110 : :
2111 : 7884126 : print_bits_of_hex (value, PBOH_SZ, bits);
2112 : :
2113 : 7884126 : suffix = type_suffix (type);
2114 : :
2115 : 7884126 : buf = (char *) alloca (strlen (max_macro) + 1 + strlen (value)
2116 : : + strlen (suffix) + 1);
2117 : 7884126 : sprintf (buf, "%s=%s%s", max_macro, value, suffix);
2118 : :
2119 : 7884126 : cpp_define (parse_in, buf);
2120 : :
2121 : 7884126 : if (min_macro)
2122 : : {
2123 : 622431 : if (TYPE_UNSIGNED (type))
2124 : : {
2125 : 207490 : buf = (char *) alloca (strlen (min_macro) + 2 + strlen (suffix) + 1);
2126 : 207490 : sprintf (buf, "%s=0%s", min_macro, suffix);
2127 : : }
2128 : : else
2129 : : {
2130 : 414941 : buf = (char *) alloca (strlen (min_macro) + 3
2131 : : + strlen (max_macro) + 6);
2132 : 414941 : sprintf (buf, "%s=(-%s - 1)", min_macro, max_macro);
2133 : : }
2134 : 622431 : cpp_define (parse_in, buf);
2135 : : }
2136 : 7884126 : }
2137 : :
2138 : : /* Define WIDTH_MACRO for the width of TYPE. If TYPE2 is not NULL,
2139 : : both types must have the same width. */
2140 : :
2141 : : static void
2142 : 4149540 : builtin_define_type_width (const char *width_macro, tree type, tree type2)
2143 : : {
2144 : 4149540 : if (type2 != NULL_TREE)
2145 : 3112155 : gcc_assert (TYPE_PRECISION (type) == TYPE_PRECISION (type2));
2146 : 4149540 : builtin_define_with_int_value (width_macro, TYPE_PRECISION (type));
2147 : 4149540 : }
2148 : :
2149 : : #include "gt-c-family-c-cppbuiltin.h"
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