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2aca9d5b | 1 | /* Subroutines used for expanding LoongArch builtins. |
83ffe9cd | 2 | Copyright (C) 2021-2023 Free Software Foundation, Inc. |
2aca9d5b | 3 | Contributed by Loongson Ltd. |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GCC; see the file COPYING3. If not see | |
19 | <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | #define IN_TARGET_CODE 1 | |
22 | ||
23 | #include "config.h" | |
24 | #include "system.h" | |
25 | #include "coretypes.h" | |
26 | #include "backend.h" | |
27 | #include "target.h" | |
28 | #include "rtl.h" | |
29 | #include "tree.h" | |
30 | #include "memmodel.h" | |
31 | #include "gimple.h" | |
32 | #include "tm_p.h" | |
33 | #include "optabs.h" | |
34 | #include "recog.h" | |
35 | #include "diagnostic.h" | |
36 | #include "fold-const.h" | |
37 | #include "expr.h" | |
38 | #include "langhooks.h" | |
c9b4c79e | 39 | #include "emit-rtl.h" |
2aca9d5b | 40 | |
41 | /* Macros to create an enumeration identifier for a function prototype. */ | |
42 | #define LARCH_FTYPE_NAME1(A, B) LARCH_##A##_FTYPE_##B | |
43 | #define LARCH_FTYPE_NAME2(A, B, C) LARCH_##A##_FTYPE_##B##_##C | |
44 | #define LARCH_FTYPE_NAME3(A, B, C, D) LARCH_##A##_FTYPE_##B##_##C##_##D | |
45 | ||
46 | /* Classifies the prototype of a built-in function. */ | |
47 | enum loongarch_function_type | |
48 | { | |
49 | #define DEF_LARCH_FTYPE(NARGS, LIST) LARCH_FTYPE_NAME##NARGS LIST, | |
50 | #include "config/loongarch/loongarch-ftypes.def" | |
51 | #undef DEF_LARCH_FTYPE | |
52 | LARCH_MAX_FTYPE_MAX | |
53 | }; | |
54 | ||
55 | /* Specifies how a built-in function should be converted into rtl. */ | |
56 | enum loongarch_builtin_type | |
57 | { | |
58 | /* The function corresponds directly to an .md pattern. The return | |
59 | value is mapped to operand 0 and the arguments are mapped to | |
60 | operands 1 and above. */ | |
61 | LARCH_BUILTIN_DIRECT, | |
62 | ||
63 | /* The function corresponds directly to an .md pattern. There is no return | |
64 | value and the arguments are mapped to operands 0 and above. */ | |
65 | LARCH_BUILTIN_DIRECT_NO_TARGET, | |
66 | ||
67 | }; | |
68 | ||
69 | /* Declare an availability predicate for built-in functions that require | |
70 | * COND to be true. NAME is the main part of the predicate's name. */ | |
71 | #define AVAIL_ALL(NAME, COND) \ | |
72 | static unsigned int \ | |
73 | loongarch_builtin_avail_##NAME (void) \ | |
74 | { \ | |
75 | return (COND) ? 1 : 0; \ | |
76 | } | |
77 | ||
78 | static unsigned int | |
79 | loongarch_builtin_avail_default (void) | |
80 | { | |
81 | return 1; | |
82 | } | |
83 | /* This structure describes a single built-in function. */ | |
84 | struct loongarch_builtin_description | |
85 | { | |
86 | /* The code of the main .md file instruction. See loongarch_builtin_type | |
87 | for more information. */ | |
88 | enum insn_code icode; | |
89 | ||
90 | /* The name of the built-in function. */ | |
91 | const char *name; | |
92 | ||
93 | /* Specifies how the function should be expanded. */ | |
94 | enum loongarch_builtin_type builtin_type; | |
95 | ||
96 | /* The function's prototype. */ | |
97 | enum loongarch_function_type function_type; | |
98 | ||
99 | /* Whether the function is available. */ | |
100 | unsigned int (*avail) (void); | |
101 | }; | |
102 | ||
103 | AVAIL_ALL (hard_float, TARGET_HARD_FLOAT_ABI) | |
104 | ||
105 | /* Construct a loongarch_builtin_description from the given arguments. | |
106 | ||
107 | INSN is the name of the associated instruction pattern, without the | |
108 | leading CODE_FOR_loongarch_. | |
109 | ||
110 | CODE is the floating-point condition code associated with the | |
111 | function. It can be 'f' if the field is not applicable. | |
112 | ||
113 | NAME is the name of the function itself, without the leading | |
114 | "__builtin_loongarch_". | |
115 | ||
116 | BUILTIN_TYPE and FUNCTION_TYPE are loongarch_builtin_description fields. | |
117 | ||
118 | AVAIL is the name of the availability predicate, without the leading | |
119 | loongarch_builtin_avail_. */ | |
120 | #define LARCH_BUILTIN(INSN, NAME, BUILTIN_TYPE, FUNCTION_TYPE, AVAIL) \ | |
121 | { \ | |
122 | CODE_FOR_loongarch_##INSN, "__builtin_loongarch_" NAME, \ | |
123 | BUILTIN_TYPE, FUNCTION_TYPE, \ | |
124 | loongarch_builtin_avail_##AVAIL \ | |
125 | } | |
126 | ||
127 | /* Define __builtin_loongarch_<INSN>, which is a LARCH_BUILTIN_DIRECT function | |
128 | mapped to instruction CODE_FOR_loongarch_<INSN>, FUNCTION_TYPE and AVAIL | |
129 | are as for LARCH_BUILTIN. */ | |
130 | #define DIRECT_BUILTIN(INSN, FUNCTION_TYPE, AVAIL) \ | |
131 | LARCH_BUILTIN (INSN, #INSN, LARCH_BUILTIN_DIRECT, FUNCTION_TYPE, AVAIL) | |
132 | ||
133 | /* Define __builtin_loongarch_<INSN>, which is a LARCH_BUILTIN_DIRECT_NO_TARGET | |
134 | function mapped to instruction CODE_FOR_loongarch_<INSN>, FUNCTION_TYPE | |
135 | and AVAIL are as for LARCH_BUILTIN. */ | |
136 | #define DIRECT_NO_TARGET_BUILTIN(INSN, FUNCTION_TYPE, AVAIL) \ | |
137 | LARCH_BUILTIN (INSN, #INSN, LARCH_BUILTIN_DIRECT_NO_TARGET, \ | |
138 | FUNCTION_TYPE, AVAIL) | |
139 | ||
140 | static const struct loongarch_builtin_description loongarch_builtins[] = { | |
141 | #define LARCH_MOVFCSR2GR 0 | |
142 | DIRECT_BUILTIN (movfcsr2gr, LARCH_USI_FTYPE_UQI, hard_float), | |
143 | #define LARCH_MOVGR2FCSR 1 | |
144 | DIRECT_NO_TARGET_BUILTIN (movgr2fcsr, LARCH_VOID_FTYPE_UQI_USI, hard_float), | |
145 | ||
146 | DIRECT_NO_TARGET_BUILTIN (cacop_w, LARCH_VOID_FTYPE_USI_USI_SI, default), | |
147 | DIRECT_NO_TARGET_BUILTIN (cacop_d, LARCH_VOID_FTYPE_USI_UDI_SI, default), | |
148 | DIRECT_NO_TARGET_BUILTIN (dbar, LARCH_VOID_FTYPE_USI, default), | |
149 | DIRECT_NO_TARGET_BUILTIN (ibar, LARCH_VOID_FTYPE_USI, default), | |
150 | ||
151 | DIRECT_BUILTIN (lddir_d, LARCH_DI_FTYPE_DI_UQI, default), | |
152 | DIRECT_BUILTIN (lddir_w, LARCH_SI_FTYPE_SI_UQI, default), | |
153 | DIRECT_NO_TARGET_BUILTIN (ldpte_d, LARCH_VOID_FTYPE_DI_UQI, default), | |
154 | DIRECT_NO_TARGET_BUILTIN (ldpte_w, LARCH_VOID_FTYPE_SI_UQI, default), | |
155 | ||
156 | /* CRC Instrinsic */ | |
157 | ||
158 | DIRECT_BUILTIN (crc_w_b_w, LARCH_SI_FTYPE_QI_SI, default), | |
159 | DIRECT_BUILTIN (crc_w_h_w, LARCH_SI_FTYPE_HI_SI, default), | |
160 | DIRECT_BUILTIN (crc_w_w_w, LARCH_SI_FTYPE_SI_SI, default), | |
161 | DIRECT_BUILTIN (crc_w_d_w, LARCH_SI_FTYPE_DI_SI, default), | |
162 | DIRECT_BUILTIN (crcc_w_b_w, LARCH_SI_FTYPE_QI_SI, default), | |
163 | DIRECT_BUILTIN (crcc_w_h_w, LARCH_SI_FTYPE_HI_SI, default), | |
164 | DIRECT_BUILTIN (crcc_w_w_w, LARCH_SI_FTYPE_SI_SI, default), | |
165 | DIRECT_BUILTIN (crcc_w_d_w, LARCH_SI_FTYPE_DI_SI, default), | |
166 | ||
167 | DIRECT_BUILTIN (csrrd_w, LARCH_USI_FTYPE_USI, default), | |
168 | DIRECT_BUILTIN (csrrd_d, LARCH_UDI_FTYPE_USI, default), | |
169 | DIRECT_BUILTIN (csrwr_w, LARCH_USI_FTYPE_USI_USI, default), | |
170 | DIRECT_BUILTIN (csrwr_d, LARCH_UDI_FTYPE_UDI_USI, default), | |
171 | DIRECT_BUILTIN (csrxchg_w, LARCH_USI_FTYPE_USI_USI_USI, default), | |
172 | DIRECT_BUILTIN (csrxchg_d, LARCH_UDI_FTYPE_UDI_UDI_USI, default), | |
173 | DIRECT_BUILTIN (iocsrrd_b, LARCH_UQI_FTYPE_USI, default), | |
174 | DIRECT_BUILTIN (iocsrrd_h, LARCH_UHI_FTYPE_USI, default), | |
175 | DIRECT_BUILTIN (iocsrrd_w, LARCH_USI_FTYPE_USI, default), | |
176 | DIRECT_BUILTIN (iocsrrd_d, LARCH_UDI_FTYPE_USI, default), | |
177 | DIRECT_NO_TARGET_BUILTIN (iocsrwr_b, LARCH_VOID_FTYPE_UQI_USI, default), | |
178 | DIRECT_NO_TARGET_BUILTIN (iocsrwr_h, LARCH_VOID_FTYPE_UHI_USI, default), | |
179 | DIRECT_NO_TARGET_BUILTIN (iocsrwr_w, LARCH_VOID_FTYPE_USI_USI, default), | |
180 | DIRECT_NO_TARGET_BUILTIN (iocsrwr_d, LARCH_VOID_FTYPE_UDI_USI, default), | |
181 | ||
182 | DIRECT_BUILTIN (cpucfg, LARCH_USI_FTYPE_USI, default), | |
183 | DIRECT_NO_TARGET_BUILTIN (asrtle_d, LARCH_VOID_FTYPE_DI_DI, default), | |
184 | DIRECT_NO_TARGET_BUILTIN (asrtgt_d, LARCH_VOID_FTYPE_DI_DI, default), | |
185 | DIRECT_NO_TARGET_BUILTIN (syscall, LARCH_VOID_FTYPE_USI, default), | |
186 | DIRECT_NO_TARGET_BUILTIN (break, LARCH_VOID_FTYPE_USI, default), | |
187 | }; | |
188 | ||
189 | /* Index I is the function declaration for loongarch_builtins[I], or null if | |
190 | the function isn't defined on this target. */ | |
191 | static GTY (()) tree loongarch_builtin_decls[ARRAY_SIZE (loongarch_builtins)]; | |
192 | /* Get the index I of the function declaration for loongarch_builtin_decls[I] | |
193 | using the instruction code or return null if not defined for the target. */ | |
194 | static GTY (()) int loongarch_get_builtin_decl_index[NUM_INSN_CODES]; | |
195 | ||
196 | /* Source-level argument types. */ | |
197 | #define LARCH_ATYPE_VOID void_type_node | |
198 | #define LARCH_ATYPE_INT integer_type_node | |
199 | #define LARCH_ATYPE_POINTER ptr_type_node | |
200 | ||
201 | /* Standard mode-based argument types. */ | |
202 | #define LARCH_ATYPE_QI intQI_type_node | |
203 | #define LARCH_ATYPE_UQI unsigned_intQI_type_node | |
204 | #define LARCH_ATYPE_HI intHI_type_node | |
205 | #define LARCH_ATYPE_UHI unsigned_intHI_type_node | |
206 | #define LARCH_ATYPE_SI intSI_type_node | |
207 | #define LARCH_ATYPE_USI unsigned_intSI_type_node | |
208 | #define LARCH_ATYPE_DI intDI_type_node | |
209 | #define LARCH_ATYPE_UDI unsigned_intDI_type_node | |
210 | #define LARCH_ATYPE_SF float_type_node | |
211 | #define LARCH_ATYPE_DF double_type_node | |
212 | ||
213 | /* LARCH_FTYPE_ATYPESN takes N LARCH_FTYPES-like type codes and lists | |
214 | their associated LARCH_ATYPEs. */ | |
215 | #define LARCH_FTYPE_ATYPES1(A, B) LARCH_ATYPE_##A, LARCH_ATYPE_##B | |
216 | ||
217 | #define LARCH_FTYPE_ATYPES2(A, B, C) \ | |
218 | LARCH_ATYPE_##A, LARCH_ATYPE_##B, LARCH_ATYPE_##C | |
219 | ||
220 | #define LARCH_FTYPE_ATYPES3(A, B, C, D) \ | |
221 | LARCH_ATYPE_##A, LARCH_ATYPE_##B, LARCH_ATYPE_##C, LARCH_ATYPE_##D | |
222 | ||
223 | #define LARCH_FTYPE_ATYPES4(A, B, C, D, E) \ | |
224 | LARCH_ATYPE_##A, LARCH_ATYPE_##B, LARCH_ATYPE_##C, LARCH_ATYPE_##D, \ | |
225 | LARCH_ATYPE_##E | |
226 | ||
227 | /* Return the function type associated with function prototype TYPE. */ | |
228 | ||
229 | static tree | |
230 | loongarch_build_function_type (enum loongarch_function_type type) | |
231 | { | |
232 | static tree types[(int) LARCH_MAX_FTYPE_MAX]; | |
233 | ||
234 | if (types[(int) type] == NULL_TREE) | |
235 | switch (type) | |
236 | { | |
237 | #define DEF_LARCH_FTYPE(NUM, ARGS) \ | |
238 | case LARCH_FTYPE_NAME##NUM ARGS: \ | |
239 | types[(int) type] \ | |
240 | = build_function_type_list (LARCH_FTYPE_ATYPES##NUM ARGS, NULL_TREE); \ | |
241 | break; | |
242 | #include "config/loongarch/loongarch-ftypes.def" | |
243 | #undef DEF_LARCH_FTYPE | |
244 | default: | |
245 | gcc_unreachable (); | |
246 | } | |
247 | ||
248 | return types[(int) type]; | |
249 | } | |
250 | ||
251 | /* Implement TARGET_INIT_BUILTINS. */ | |
252 | ||
253 | void | |
254 | loongarch_init_builtins (void) | |
255 | { | |
256 | const struct loongarch_builtin_description *d; | |
257 | unsigned int i; | |
258 | tree type; | |
259 | ||
4e2d53c9 | 260 | /* Register the type float128_type_node as a built-in type and |
261 | give it an alias "__float128". */ | |
262 | (*lang_hooks.types.register_builtin_type) (float128_type_node, | |
263 | "__float128"); | |
264 | ||
2aca9d5b | 265 | /* Iterate through all of the bdesc arrays, initializing all of the |
266 | builtin functions. */ | |
267 | for (i = 0; i < ARRAY_SIZE (loongarch_builtins); i++) | |
268 | { | |
269 | d = &loongarch_builtins[i]; | |
270 | if (d->avail ()) | |
271 | { | |
272 | type = loongarch_build_function_type (d->function_type); | |
273 | loongarch_builtin_decls[i] | |
274 | = add_builtin_function (d->name, type, i, BUILT_IN_MD, NULL, | |
275 | NULL); | |
276 | loongarch_get_builtin_decl_index[d->icode] = i; | |
277 | } | |
278 | } | |
279 | } | |
280 | ||
281 | /* Implement TARGET_BUILTIN_DECL. */ | |
282 | ||
283 | tree | |
284 | loongarch_builtin_decl (unsigned int code, bool initialize_p ATTRIBUTE_UNUSED) | |
285 | { | |
286 | if (code >= ARRAY_SIZE (loongarch_builtins)) | |
287 | return error_mark_node; | |
288 | return loongarch_builtin_decls[code]; | |
289 | } | |
290 | ||
291 | /* Take argument ARGNO from EXP's argument list and convert it into | |
292 | an expand operand. Store the operand in *OP. */ | |
293 | ||
294 | static void | |
295 | loongarch_prepare_builtin_arg (struct expand_operand *op, tree exp, | |
296 | unsigned int argno) | |
297 | { | |
298 | tree arg; | |
299 | rtx value; | |
300 | ||
301 | arg = CALL_EXPR_ARG (exp, argno); | |
302 | value = expand_normal (arg); | |
303 | create_input_operand (op, value, TYPE_MODE (TREE_TYPE (arg))); | |
304 | } | |
305 | ||
c9b4c79e LC |
306 | /* Return a const_int vector of VAL with mode MODE. */ |
307 | ||
308 | rtx | |
309 | loongarch_gen_const_int_vector (machine_mode mode, HOST_WIDE_INT val) | |
310 | { | |
311 | rtx c = gen_int_mode (val, GET_MODE_INNER (mode)); | |
312 | return gen_const_vec_duplicate (mode, c); | |
313 | } | |
314 | ||
2aca9d5b | 315 | /* Expand instruction ICODE as part of a built-in function sequence. |
316 | Use the first NOPS elements of OPS as the instruction's operands. | |
317 | HAS_TARGET_P is true if operand 0 is a target; it is false if the | |
318 | instruction has no target. | |
319 | ||
320 | Return the target rtx if HAS_TARGET_P, otherwise return const0_rtx. */ | |
321 | ||
322 | static rtx | |
323 | loongarch_expand_builtin_insn (enum insn_code icode, unsigned int nops, | |
324 | struct expand_operand *ops, bool has_target_p) | |
325 | { | |
326 | if (!maybe_expand_insn (icode, nops, ops)) | |
327 | { | |
328 | error ("invalid argument to built-in function"); | |
329 | return has_target_p ? gen_reg_rtx (ops[0].mode) : const0_rtx; | |
330 | } | |
331 | return has_target_p ? ops[0].value : const0_rtx; | |
332 | } | |
333 | ||
334 | /* Expand a LARCH_BUILTIN_DIRECT or LARCH_BUILTIN_DIRECT_NO_TARGET function; | |
335 | HAS_TARGET_P says which. EXP is the CALL_EXPR that calls the function | |
336 | and ICODE is the code of the associated .md pattern. TARGET, if nonnull, | |
337 | suggests a good place to put the result. */ | |
338 | ||
339 | static rtx | |
340 | loongarch_expand_builtin_direct (enum insn_code icode, rtx target, tree exp, | |
341 | bool has_target_p) | |
342 | { | |
343 | struct expand_operand ops[MAX_RECOG_OPERANDS]; | |
344 | int opno, argno; | |
345 | ||
346 | /* Map any target to operand 0. */ | |
347 | opno = 0; | |
348 | if (has_target_p) | |
349 | create_output_operand (&ops[opno++], target, TYPE_MODE (TREE_TYPE (exp))); | |
350 | ||
351 | /* Map the arguments to the other operands. */ | |
352 | gcc_assert (opno + call_expr_nargs (exp) | |
353 | == insn_data[icode].n_generator_args); | |
354 | for (argno = 0; argno < call_expr_nargs (exp); argno++) | |
355 | loongarch_prepare_builtin_arg (&ops[opno++], exp, argno); | |
356 | ||
357 | return loongarch_expand_builtin_insn (icode, opno, ops, has_target_p); | |
358 | } | |
359 | ||
360 | /* Implement TARGET_EXPAND_BUILTIN. */ | |
361 | ||
362 | rtx | |
363 | loongarch_expand_builtin (tree exp, rtx target, rtx subtarget ATTRIBUTE_UNUSED, | |
364 | machine_mode mode ATTRIBUTE_UNUSED, | |
365 | int ignore ATTRIBUTE_UNUSED) | |
366 | { | |
367 | tree fndecl; | |
368 | unsigned int fcode, avail; | |
369 | const struct loongarch_builtin_description *d; | |
370 | ||
371 | fndecl = TREE_OPERAND (CALL_EXPR_FN (exp), 0); | |
372 | fcode = DECL_MD_FUNCTION_CODE (fndecl); | |
373 | gcc_assert (fcode < ARRAY_SIZE (loongarch_builtins)); | |
374 | d = &loongarch_builtins[fcode]; | |
375 | avail = d->avail (); | |
376 | gcc_assert (avail != 0); | |
377 | switch (d->builtin_type) | |
378 | { | |
379 | case LARCH_BUILTIN_DIRECT: | |
380 | return loongarch_expand_builtin_direct (d->icode, target, exp, true); | |
381 | ||
382 | case LARCH_BUILTIN_DIRECT_NO_TARGET: | |
383 | return loongarch_expand_builtin_direct (d->icode, target, exp, false); | |
384 | } | |
385 | gcc_unreachable (); | |
386 | } | |
387 | ||
388 | /* Implement TARGET_ATOMIC_ASSIGN_EXPAND_FENV. */ | |
389 | ||
390 | void | |
391 | loongarch_atomic_assign_expand_fenv (tree *hold, tree *clear, tree *update) | |
392 | { | |
393 | if (!TARGET_HARD_FLOAT_ABI) | |
394 | return; | |
395 | tree exceptions_var = create_tmp_var_raw (LARCH_ATYPE_USI); | |
396 | tree fcsr_orig_var = create_tmp_var_raw (LARCH_ATYPE_USI); | |
397 | tree fcsr_mod_var = create_tmp_var_raw (LARCH_ATYPE_USI); | |
398 | tree const0 = build_int_cst (LARCH_ATYPE_UQI, 0); | |
399 | tree get_fcsr = loongarch_builtin_decls[LARCH_MOVFCSR2GR]; | |
400 | tree set_fcsr = loongarch_builtin_decls[LARCH_MOVGR2FCSR]; | |
401 | tree get_fcsr_hold_call = build_call_expr (get_fcsr, 1, const0); | |
402 | tree hold_assign_orig = build4 (TARGET_EXPR, LARCH_ATYPE_USI, | |
403 | fcsr_orig_var, get_fcsr_hold_call, | |
404 | NULL, NULL); | |
405 | tree hold_mod_val = build2 (BIT_AND_EXPR, LARCH_ATYPE_USI, fcsr_orig_var, | |
406 | build_int_cst (LARCH_ATYPE_USI, 0xffe0ffe0)); | |
407 | tree hold_assign_mod = build4 (TARGET_EXPR, LARCH_ATYPE_USI, | |
408 | fcsr_mod_var, hold_mod_val, NULL, NULL); | |
409 | tree set_fcsr_hold_call = build_call_expr (set_fcsr, 2, const0, | |
410 | fcsr_mod_var); | |
411 | tree hold_all = build2 (COMPOUND_EXPR, LARCH_ATYPE_USI, hold_assign_orig, | |
412 | hold_assign_mod); | |
413 | *hold = build2 (COMPOUND_EXPR, void_type_node, hold_all, set_fcsr_hold_call); | |
414 | ||
415 | *clear = build_call_expr (set_fcsr, 2, const0, fcsr_mod_var); | |
416 | ||
417 | tree get_fcsr_update_call = build_call_expr (get_fcsr, 1, const0); | |
418 | *update = build4 (TARGET_EXPR, LARCH_ATYPE_USI, exceptions_var, | |
419 | get_fcsr_update_call, NULL, NULL); | |
420 | tree set_fcsr_update_call = build_call_expr (set_fcsr, 2, const0, | |
421 | fcsr_orig_var); | |
422 | *update = build2 (COMPOUND_EXPR, void_type_node, *update, | |
423 | set_fcsr_update_call); | |
424 | tree atomic_feraiseexcept | |
425 | = builtin_decl_implicit (BUILT_IN_ATOMIC_FERAISEEXCEPT); | |
426 | tree int_exceptions_var = fold_convert (integer_type_node, exceptions_var); | |
427 | tree atomic_feraiseexcept_call = build_call_expr (atomic_feraiseexcept, 1, | |
428 | int_exceptions_var); | |
429 | *update = build2 (COMPOUND_EXPR, void_type_node, *update, | |
430 | atomic_feraiseexcept_call); | |
431 | } | |
432 | ||
433 | /* Implement TARGET_BUILTIN_VA_LIST. */ | |
434 | ||
435 | tree | |
436 | loongarch_build_builtin_va_list (void) | |
437 | { | |
438 | return ptr_type_node; | |
439 | } |