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35485da9 | 1 | /* A pure C API to enable client code to embed GCC as a JIT-compiler. |
1e3b6a3d | 2 | Copyright (C) 2013-2015 Free Software Foundation, Inc. |
35485da9 DM |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | General Public License 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 | #ifndef LIBGCCJIT_H | |
21 | #define LIBGCCJIT_H | |
22 | ||
eb4c16eb DM |
23 | #include <stdio.h> |
24 | ||
35485da9 DM |
25 | #ifdef __cplusplus |
26 | extern "C" { | |
27 | #endif /* __cplusplus */ | |
28 | ||
29 | /********************************************************************** | |
30 | Data structures. | |
31 | **********************************************************************/ | |
32 | /* All structs within the API are opaque. */ | |
33 | ||
7c8db13e DM |
34 | /* A gcc_jit_context encapsulates the state of a compilation. |
35 | You can set up options on it, and add types, functions and code, using | |
36 | the API below. | |
35485da9 | 37 | |
7c8db13e | 38 | Invoking gcc_jit_context_compile on it gives you a gcc_jit_result * |
fdce7209 | 39 | (or NULL), representing in-memory machine code. |
35485da9 | 40 | |
7c8db13e DM |
41 | You can call gcc_jit_context_compile repeatedly on one context, giving |
42 | multiple independent results. | |
43 | ||
fdce7209 DM |
44 | Similarly, you can call gcc_jit_context_compile_to_file on a context |
45 | to compile to disk. | |
46 | ||
7c8db13e | 47 | Eventually you can call gcc_jit_context_release to clean up the |
fdce7209 DM |
48 | context; any in-memory results created from it are still usable, and |
49 | should be cleaned up via gcc_jit_result_release. */ | |
35485da9 DM |
50 | typedef struct gcc_jit_context gcc_jit_context; |
51 | ||
fdce7209 | 52 | /* A gcc_jit_result encapsulates the result of an in-memory compilation. */ |
35485da9 DM |
53 | typedef struct gcc_jit_result gcc_jit_result; |
54 | ||
55 | /* An object created within a context. Such objects are automatically | |
56 | cleaned up when the context is released. | |
57 | ||
58 | The class hierarchy looks like this: | |
59 | ||
60 | +- gcc_jit_object | |
c168eab9 UD |
61 | +- gcc_jit_location |
62 | +- gcc_jit_type | |
35485da9 | 63 | +- gcc_jit_struct |
c168eab9 UD |
64 | +- gcc_jit_field |
65 | +- gcc_jit_function | |
66 | +- gcc_jit_block | |
67 | +- gcc_jit_rvalue | |
68 | +- gcc_jit_lvalue | |
69 | +- gcc_jit_param | |
35485da9 DM |
70 | */ |
71 | typedef struct gcc_jit_object gcc_jit_object; | |
72 | ||
73 | /* A gcc_jit_location encapsulates a source code location, so that | |
74 | you can (optionally) associate locations in your language with | |
75 | statements in the JIT-compiled code, allowing the debugger to | |
76 | single-step through your language. | |
77 | ||
78 | Note that to do so, you also need to enable | |
79 | GCC_JIT_BOOL_OPTION_DEBUGINFO | |
80 | on the gcc_jit_context. | |
81 | ||
82 | gcc_jit_location instances are optional; you can always pass | |
83 | NULL. */ | |
84 | typedef struct gcc_jit_location gcc_jit_location; | |
85 | ||
86 | /* A gcc_jit_type encapsulates a type e.g. "int" or a "struct foo*". */ | |
87 | typedef struct gcc_jit_type gcc_jit_type; | |
88 | ||
89 | /* A gcc_jit_field encapsulates a field within a struct; it is used | |
90 | when creating a struct type (using gcc_jit_context_new_struct_type). | |
91 | Fields cannot be shared between structs. */ | |
92 | typedef struct gcc_jit_field gcc_jit_field; | |
93 | ||
94 | /* A gcc_jit_struct encapsulates a struct type, either one that we have | |
95 | the layout for, or an opaque type. */ | |
96 | typedef struct gcc_jit_struct gcc_jit_struct; | |
97 | ||
98 | /* A gcc_jit_function encapsulates a function: either one that you're | |
99 | creating yourself, or a reference to one that you're dynamically | |
100 | linking to within the rest of the process. */ | |
101 | typedef struct gcc_jit_function gcc_jit_function; | |
102 | ||
103 | /* A gcc_jit_block encapsulates a "basic block" of statements within a | |
104 | function (i.e. with one entry point and one exit point). | |
105 | ||
106 | Every block within a function must be terminated with a conditional, | |
107 | a branch, or a return. | |
108 | ||
109 | The blocks within a function form a directed graph. | |
110 | ||
111 | The entrypoint to the function is the first block created within | |
112 | it. | |
113 | ||
114 | All of the blocks in a function must be reachable via some path from | |
115 | the first block. | |
116 | ||
117 | It's OK to have more than one "return" from a function (i.e. multiple | |
118 | blocks that terminate by returning). */ | |
119 | typedef struct gcc_jit_block gcc_jit_block; | |
120 | ||
121 | /* A gcc_jit_rvalue is an expression within your code, with some type. */ | |
122 | typedef struct gcc_jit_rvalue gcc_jit_rvalue; | |
123 | ||
124 | /* A gcc_jit_lvalue is a storage location within your code (e.g. a | |
125 | variable, a parameter, etc). It is also a gcc_jit_rvalue; use | |
126 | gcc_jit_lvalue_as_rvalue to cast. */ | |
127 | typedef struct gcc_jit_lvalue gcc_jit_lvalue; | |
128 | ||
129 | /* A gcc_jit_param is a function parameter, used when creating a | |
130 | gcc_jit_function. It is also a gcc_jit_lvalue (and thus also an | |
131 | rvalue); use gcc_jit_param_as_lvalue to convert. */ | |
132 | typedef struct gcc_jit_param gcc_jit_param; | |
133 | ||
134 | /* Acquire a JIT-compilation context. */ | |
135 | extern gcc_jit_context * | |
136 | gcc_jit_context_acquire (void); | |
137 | ||
138 | /* Release the context. After this call, it's no longer valid to use | |
139 | the ctxt. */ | |
140 | extern void | |
141 | gcc_jit_context_release (gcc_jit_context *ctxt); | |
142 | ||
143 | /* Options taking string values. */ | |
144 | enum gcc_jit_str_option | |
145 | { | |
146 | /* The name of the program, for use as a prefix when printing error | |
147 | messages to stderr. If NULL, or default, "libgccjit.so" is used. */ | |
148 | GCC_JIT_STR_OPTION_PROGNAME, | |
149 | ||
150 | GCC_JIT_NUM_STR_OPTIONS | |
151 | }; | |
152 | ||
153 | /* Options taking int values. */ | |
154 | enum gcc_jit_int_option | |
155 | { | |
156 | /* How much to optimize the code. | |
157 | Valid values are 0-3, corresponding to GCC's command-line options | |
158 | -O0 through -O3. | |
159 | ||
160 | The default value is 0 (unoptimized). */ | |
161 | GCC_JIT_INT_OPTION_OPTIMIZATION_LEVEL, | |
162 | ||
163 | GCC_JIT_NUM_INT_OPTIONS | |
164 | }; | |
165 | ||
166 | /* Options taking boolean values. | |
167 | These all default to "false". */ | |
168 | enum gcc_jit_bool_option | |
169 | { | |
170 | /* If true, gcc_jit_context_compile will attempt to do the right | |
171 | thing so that if you attach a debugger to the process, it will | |
172 | be able to inspect variables and step through your code. | |
173 | ||
174 | Note that you can't step through code unless you set up source | |
175 | location information for the code (by creating and passing in | |
176 | gcc_jit_location instances). */ | |
177 | GCC_JIT_BOOL_OPTION_DEBUGINFO, | |
178 | ||
179 | /* If true, gcc_jit_context_compile will dump its initial "tree" | |
180 | representation of your code to stderr (before any | |
181 | optimizations). */ | |
182 | GCC_JIT_BOOL_OPTION_DUMP_INITIAL_TREE, | |
183 | ||
184 | /* If true, gcc_jit_context_compile will dump the "gimple" | |
185 | representation of your code to stderr, before any optimizations | |
186 | are performed. The dump resembles C code. */ | |
187 | GCC_JIT_BOOL_OPTION_DUMP_INITIAL_GIMPLE, | |
188 | ||
189 | /* If true, gcc_jit_context_compile will dump the final | |
190 | generated code to stderr, in the form of assembly language. */ | |
191 | GCC_JIT_BOOL_OPTION_DUMP_GENERATED_CODE, | |
192 | ||
193 | /* If true, gcc_jit_context_compile will print information to stderr | |
194 | on the actions it is performing, followed by a profile showing | |
195 | the time taken and memory usage of each phase. | |
196 | */ | |
197 | GCC_JIT_BOOL_OPTION_DUMP_SUMMARY, | |
198 | ||
199 | /* If true, gcc_jit_context_compile will dump copious | |
200 | amount of information on what it's doing to various | |
201 | files within a temporary directory. Use | |
202 | GCC_JIT_BOOL_OPTION_KEEP_INTERMEDIATES (see below) to | |
203 | see the results. The files are intended to be human-readable, | |
204 | but the exact files and their formats are subject to change. | |
205 | */ | |
206 | GCC_JIT_BOOL_OPTION_DUMP_EVERYTHING, | |
207 | ||
208 | /* If true, libgccjit will aggressively run its garbage collector, to | |
209 | shake out bugs (greatly slowing down the compile). This is likely | |
210 | to only be of interest to developers *of* the library. It is | |
211 | used when running the selftest suite. */ | |
212 | GCC_JIT_BOOL_OPTION_SELFCHECK_GC, | |
213 | ||
214 | /* If true, gcc_jit_context_release will not clean up | |
215 | intermediate files written to the filesystem, and will display | |
216 | their location on stderr. */ | |
217 | GCC_JIT_BOOL_OPTION_KEEP_INTERMEDIATES, | |
218 | ||
219 | GCC_JIT_NUM_BOOL_OPTIONS | |
220 | }; | |
221 | ||
222 | /* Set a string option on the given context. | |
223 | ||
c168eab9 UD |
224 | The context takes a copy of the string, so the |
225 | (const char *) buffer is not needed anymore after the call | |
226 | returns. */ | |
35485da9 DM |
227 | extern void |
228 | gcc_jit_context_set_str_option (gcc_jit_context *ctxt, | |
229 | enum gcc_jit_str_option opt, | |
230 | const char *value); | |
231 | ||
232 | /* Set an int option on the given context. */ | |
233 | extern void | |
234 | gcc_jit_context_set_int_option (gcc_jit_context *ctxt, | |
235 | enum gcc_jit_int_option opt, | |
236 | int value); | |
237 | ||
238 | /* Set a boolean option on the given context. | |
239 | ||
240 | Zero is "false" (the default), non-zero is "true". */ | |
241 | extern void | |
242 | gcc_jit_context_set_bool_option (gcc_jit_context *ctxt, | |
243 | enum gcc_jit_bool_option opt, | |
244 | int value); | |
245 | ||
fa22c20d DM |
246 | /* Add an arbitrary gcc command-line option to the context. |
247 | The context takes a copy of the string, so the | |
248 | (const char *) optname is not needed anymore after the call | |
249 | returns. | |
250 | ||
251 | Note that only some options are likely to be meaningful; there is no | |
252 | "frontend" within libgccjit, so typically only those affecting | |
253 | optimization and code-generation are likely to be useful. | |
254 | ||
255 | This entrypoint was added in LIBGCCJIT_ABI_1; you can test for | |
256 | its presence using | |
257 | #ifdef LIBGCCJIT_HAVE_gcc_jit_context_add_command_line_option | |
258 | */ | |
259 | ||
260 | extern void | |
261 | gcc_jit_context_add_command_line_option (gcc_jit_context *ctxt, | |
262 | const char *optname); | |
263 | ||
264 | /* Pre-canned feature-test macro for detecting the presence of | |
265 | gcc_jit_context_add_command_line_option within libgccjit.h. */ | |
266 | ||
267 | #define LIBGCCJIT_HAVE_gcc_jit_context_add_command_line_option | |
268 | ||
fdce7209 DM |
269 | /* Compile the context to in-memory machine code. |
270 | ||
271 | This can be called more that once on a given context, | |
272 | although any errors that occur will block further compilation. */ | |
273 | ||
35485da9 DM |
274 | extern gcc_jit_result * |
275 | gcc_jit_context_compile (gcc_jit_context *ctxt); | |
276 | ||
fdce7209 DM |
277 | /* Kinds of ahead-of-time compilation, for use with |
278 | gcc_jit_context_compile_to_file. */ | |
279 | ||
280 | enum gcc_jit_output_kind | |
281 | { | |
282 | /* Compile the context to an assembler file. */ | |
283 | GCC_JIT_OUTPUT_KIND_ASSEMBLER, | |
284 | ||
285 | /* Compile the context to an object file. */ | |
286 | GCC_JIT_OUTPUT_KIND_OBJECT_FILE, | |
287 | ||
288 | /* Compile the context to a dynamic library. */ | |
289 | GCC_JIT_OUTPUT_KIND_DYNAMIC_LIBRARY, | |
290 | ||
291 | /* Compile the context to an executable. */ | |
292 | GCC_JIT_OUTPUT_KIND_EXECUTABLE | |
293 | }; | |
294 | ||
295 | /* Compile the context to a file of the given kind. | |
296 | ||
297 | This can be called more that once on a given context, | |
298 | although any errors that occur will block further compilation. */ | |
299 | ||
300 | extern void | |
301 | gcc_jit_context_compile_to_file (gcc_jit_context *ctxt, | |
302 | enum gcc_jit_output_kind output_kind, | |
303 | const char *output_path); | |
304 | ||
35485da9 DM |
305 | /* To help with debugging: dump a C-like representation to the given path, |
306 | describing what's been set up on the context. | |
307 | ||
308 | If "update_locations" is true, then also set up gcc_jit_location | |
309 | information throughout the context, pointing at the dump file as if it | |
310 | were a source file. This may be of use in conjunction with | |
311 | GCC_JIT_BOOL_OPTION_DEBUGINFO to allow stepping through the code in a | |
312 | debugger. */ | |
313 | extern void | |
314 | gcc_jit_context_dump_to_file (gcc_jit_context *ctxt, | |
315 | const char *path, | |
316 | int update_locations); | |
317 | ||
eb4c16eb DM |
318 | /* To help with debugging; enable ongoing logging of the context's |
319 | activity to the given FILE *. | |
320 | ||
321 | The caller remains responsible for closing "logfile". | |
322 | ||
323 | Params "flags" and "verbosity" are reserved for future use, and | |
324 | must both be 0 for now. */ | |
325 | extern void | |
326 | gcc_jit_context_set_logfile (gcc_jit_context *ctxt, | |
327 | FILE *logfile, | |
328 | int flags, | |
329 | int verbosity); | |
330 | ||
dc44ee3a | 331 | /* To be called after any API call, this gives the first error message |
35485da9 DM |
332 | that occurred on the context. |
333 | ||
334 | The returned string is valid for the rest of the lifetime of the | |
335 | context. | |
336 | ||
337 | If no errors occurred, this will be NULL. */ | |
338 | extern const char * | |
339 | gcc_jit_context_get_first_error (gcc_jit_context *ctxt); | |
303e1d56 | 340 | |
dc44ee3a | 341 | /* To be called after any API call, this gives the last error message |
303e1d56 DM |
342 | that occurred on the context. |
343 | ||
dc44ee3a | 344 | If no errors occurred, this will be NULL. |
303e1d56 | 345 | |
dc44ee3a DM |
346 | If non-NULL, the returned string is only guaranteed to be valid until |
347 | the next call to libgccjit relating to this context. */ | |
303e1d56 DM |
348 | extern const char * |
349 | gcc_jit_context_get_last_error (gcc_jit_context *ctxt); | |
35485da9 DM |
350 | |
351 | /* Locate a given function within the built machine code. | |
352 | This will need to be cast to a function pointer of the | |
353 | correct type before it can be called. */ | |
354 | extern void * | |
355 | gcc_jit_result_get_code (gcc_jit_result *result, | |
356 | const char *funcname); | |
357 | ||
791cfef8 DM |
358 | /* Locate a given global within the built machine code. |
359 | It must have been created using GCC_JIT_GLOBAL_EXPORTED. | |
360 | This is a ptr to the global, so e.g. for an int this is an int *. */ | |
361 | extern void * | |
362 | gcc_jit_result_get_global (gcc_jit_result *result, | |
363 | const char *name); | |
364 | ||
35485da9 DM |
365 | /* Once we're done with the code, this unloads the built .so file. |
366 | This cleans up the result; after calling this, it's no longer | |
367 | valid to use the result. */ | |
368 | extern void | |
369 | gcc_jit_result_release (gcc_jit_result *result); | |
370 | ||
371 | ||
372 | /********************************************************************** | |
373 | Functions for creating "contextual" objects. | |
374 | ||
375 | All objects created by these functions share the lifetime of the context | |
376 | they are created within, and are automatically cleaned up for you when | |
377 | you call gcc_jit_context_release on the context. | |
378 | ||
379 | Note that this means you can't use references to them after you've | |
380 | released their context. | |
381 | ||
382 | All (const char *) string arguments passed to these functions are | |
c168eab9 | 383 | copied, so you don't need to keep them around. |
35485da9 DM |
384 | |
385 | You create code by adding a sequence of statements to blocks. | |
386 | **********************************************************************/ | |
387 | ||
388 | /********************************************************************** | |
389 | The base class of "contextual" object. | |
390 | **********************************************************************/ | |
391 | /* Which context is "obj" within? */ | |
392 | extern gcc_jit_context * | |
393 | gcc_jit_object_get_context (gcc_jit_object *obj); | |
394 | ||
395 | /* Get a human-readable description of this object. | |
396 | The string buffer is created the first time this is called on a given | |
397 | object, and persists until the object's context is released. */ | |
398 | extern const char * | |
399 | gcc_jit_object_get_debug_string (gcc_jit_object *obj); | |
400 | ||
401 | /********************************************************************** | |
402 | Debugging information. | |
403 | **********************************************************************/ | |
404 | ||
405 | /* Creating source code locations for use by the debugger. | |
406 | Line and column numbers are 1-based. */ | |
407 | extern gcc_jit_location * | |
408 | gcc_jit_context_new_location (gcc_jit_context *ctxt, | |
409 | const char *filename, | |
410 | int line, | |
411 | int column); | |
412 | ||
413 | /* Upcasting from location to object. */ | |
414 | extern gcc_jit_object * | |
415 | gcc_jit_location_as_object (gcc_jit_location *loc); | |
416 | ||
417 | ||
418 | /********************************************************************** | |
419 | Types. | |
420 | **********************************************************************/ | |
421 | ||
422 | /* Upcasting from type to object. */ | |
423 | extern gcc_jit_object * | |
424 | gcc_jit_type_as_object (gcc_jit_type *type); | |
425 | ||
426 | /* Access to specific types. */ | |
427 | enum gcc_jit_types | |
428 | { | |
429 | /* C's "void" type. */ | |
430 | GCC_JIT_TYPE_VOID, | |
431 | ||
432 | /* "void *". */ | |
433 | GCC_JIT_TYPE_VOID_PTR, | |
434 | ||
435 | /* C++'s bool type; also C99's "_Bool" type, aka "bool" if using | |
436 | stdbool.h. */ | |
437 | GCC_JIT_TYPE_BOOL, | |
438 | ||
439 | /* Various integer types. */ | |
440 | ||
441 | /* C's "char" (of some signedness) and the variants where the | |
442 | signedness is specified. */ | |
443 | GCC_JIT_TYPE_CHAR, | |
444 | GCC_JIT_TYPE_SIGNED_CHAR, | |
445 | GCC_JIT_TYPE_UNSIGNED_CHAR, | |
446 | ||
447 | /* C's "short" and "unsigned short". */ | |
448 | GCC_JIT_TYPE_SHORT, /* signed */ | |
449 | GCC_JIT_TYPE_UNSIGNED_SHORT, | |
450 | ||
451 | /* C's "int" and "unsigned int". */ | |
452 | GCC_JIT_TYPE_INT, /* signed */ | |
453 | GCC_JIT_TYPE_UNSIGNED_INT, | |
454 | ||
455 | /* C's "long" and "unsigned long". */ | |
456 | GCC_JIT_TYPE_LONG, /* signed */ | |
457 | GCC_JIT_TYPE_UNSIGNED_LONG, | |
458 | ||
459 | /* C99's "long long" and "unsigned long long". */ | |
460 | GCC_JIT_TYPE_LONG_LONG, /* signed */ | |
461 | GCC_JIT_TYPE_UNSIGNED_LONG_LONG, | |
462 | ||
463 | /* Floating-point types */ | |
464 | ||
465 | GCC_JIT_TYPE_FLOAT, | |
466 | GCC_JIT_TYPE_DOUBLE, | |
467 | GCC_JIT_TYPE_LONG_DOUBLE, | |
468 | ||
469 | /* C type: (const char *). */ | |
470 | GCC_JIT_TYPE_CONST_CHAR_PTR, | |
471 | ||
472 | /* The C "size_t" type. */ | |
473 | GCC_JIT_TYPE_SIZE_T, | |
474 | ||
475 | /* C type: (FILE *) */ | |
eeafb319 DM |
476 | GCC_JIT_TYPE_FILE_PTR, |
477 | ||
478 | /* Complex numbers. */ | |
479 | GCC_JIT_TYPE_COMPLEX_FLOAT, | |
480 | GCC_JIT_TYPE_COMPLEX_DOUBLE, | |
481 | GCC_JIT_TYPE_COMPLEX_LONG_DOUBLE | |
482 | ||
35485da9 DM |
483 | }; |
484 | ||
485 | extern gcc_jit_type * | |
486 | gcc_jit_context_get_type (gcc_jit_context *ctxt, | |
487 | enum gcc_jit_types type_); | |
488 | ||
489 | /* Get the integer type of the given size and signedness. */ | |
490 | extern gcc_jit_type * | |
491 | gcc_jit_context_get_int_type (gcc_jit_context *ctxt, | |
492 | int num_bytes, int is_signed); | |
493 | ||
494 | /* Constructing new types. */ | |
495 | ||
496 | /* Given type "T", get type "T*". */ | |
497 | extern gcc_jit_type * | |
498 | gcc_jit_type_get_pointer (gcc_jit_type *type); | |
499 | ||
500 | /* Given type "T", get type "const T". */ | |
501 | extern gcc_jit_type * | |
502 | gcc_jit_type_get_const (gcc_jit_type *type); | |
503 | ||
504 | /* Given type "T", get type "volatile T". */ | |
505 | extern gcc_jit_type * | |
506 | gcc_jit_type_get_volatile (gcc_jit_type *type); | |
507 | ||
508 | /* Given type "T", get type "T[N]" (for a constant N). */ | |
509 | extern gcc_jit_type * | |
510 | gcc_jit_context_new_array_type (gcc_jit_context *ctxt, | |
511 | gcc_jit_location *loc, | |
512 | gcc_jit_type *element_type, | |
513 | int num_elements); | |
514 | ||
515 | /* Struct-handling. */ | |
516 | ||
517 | /* Create a field, for use within a struct or union. */ | |
518 | extern gcc_jit_field * | |
519 | gcc_jit_context_new_field (gcc_jit_context *ctxt, | |
520 | gcc_jit_location *loc, | |
521 | gcc_jit_type *type, | |
522 | const char *name); | |
523 | ||
524 | /* Upcasting from field to object. */ | |
525 | extern gcc_jit_object * | |
526 | gcc_jit_field_as_object (gcc_jit_field *field); | |
527 | ||
528 | /* Create a struct type from an array of fields. */ | |
529 | extern gcc_jit_struct * | |
530 | gcc_jit_context_new_struct_type (gcc_jit_context *ctxt, | |
531 | gcc_jit_location *loc, | |
532 | const char *name, | |
533 | int num_fields, | |
534 | gcc_jit_field **fields); | |
535 | ||
536 | /* Create an opaque struct type. */ | |
537 | extern gcc_jit_struct * | |
538 | gcc_jit_context_new_opaque_struct (gcc_jit_context *ctxt, | |
539 | gcc_jit_location *loc, | |
540 | const char *name); | |
541 | ||
542 | /* Upcast a struct to a type. */ | |
543 | extern gcc_jit_type * | |
544 | gcc_jit_struct_as_type (gcc_jit_struct *struct_type); | |
545 | ||
546 | /* Populating the fields of a formerly-opaque struct type. | |
547 | This can only be called once on a given struct type. */ | |
548 | extern void | |
549 | gcc_jit_struct_set_fields (gcc_jit_struct *struct_type, | |
550 | gcc_jit_location *loc, | |
551 | int num_fields, | |
552 | gcc_jit_field **fields); | |
553 | ||
554 | /* Unions work similarly to structs. */ | |
555 | extern gcc_jit_type * | |
556 | gcc_jit_context_new_union_type (gcc_jit_context *ctxt, | |
557 | gcc_jit_location *loc, | |
558 | const char *name, | |
559 | int num_fields, | |
560 | gcc_jit_field **fields); | |
561 | ||
562 | /* Function pointers. */ | |
563 | ||
564 | extern gcc_jit_type * | |
565 | gcc_jit_context_new_function_ptr_type (gcc_jit_context *ctxt, | |
566 | gcc_jit_location *loc, | |
567 | gcc_jit_type *return_type, | |
568 | int num_params, | |
569 | gcc_jit_type **param_types, | |
570 | int is_variadic); | |
571 | ||
572 | /********************************************************************** | |
573 | Constructing functions. | |
574 | **********************************************************************/ | |
575 | /* Create a function param. */ | |
576 | extern gcc_jit_param * | |
577 | gcc_jit_context_new_param (gcc_jit_context *ctxt, | |
578 | gcc_jit_location *loc, | |
579 | gcc_jit_type *type, | |
580 | const char *name); | |
581 | ||
582 | /* Upcasting from param to object. */ | |
583 | extern gcc_jit_object * | |
584 | gcc_jit_param_as_object (gcc_jit_param *param); | |
585 | ||
586 | /* Upcasting from param to lvalue. */ | |
587 | extern gcc_jit_lvalue * | |
588 | gcc_jit_param_as_lvalue (gcc_jit_param *param); | |
589 | ||
590 | /* Upcasting from param to rvalue. */ | |
591 | extern gcc_jit_rvalue * | |
592 | gcc_jit_param_as_rvalue (gcc_jit_param *param); | |
593 | ||
594 | /* Kinds of function. */ | |
595 | enum gcc_jit_function_kind | |
596 | { | |
597 | /* Function is defined by the client code and visible | |
598 | by name outside of the JIT. */ | |
599 | GCC_JIT_FUNCTION_EXPORTED, | |
600 | ||
601 | /* Function is defined by the client code, but is invisible | |
602 | outside of the JIT. Analogous to a "static" function. */ | |
603 | GCC_JIT_FUNCTION_INTERNAL, | |
604 | ||
605 | /* Function is not defined by the client code; we're merely | |
606 | referring to it. Analogous to using an "extern" function from a | |
607 | header file. */ | |
608 | GCC_JIT_FUNCTION_IMPORTED, | |
609 | ||
610 | /* Function is only ever inlined into other functions, and is | |
611 | invisible outside of the JIT. | |
612 | ||
613 | Analogous to prefixing with "inline" and adding | |
614 | __attribute__((always_inline)). | |
615 | ||
616 | Inlining will only occur when the optimization level is | |
617 | above 0; when optimization is off, this is essentially the | |
618 | same as GCC_JIT_FUNCTION_INTERNAL. */ | |
619 | GCC_JIT_FUNCTION_ALWAYS_INLINE | |
620 | }; | |
621 | ||
622 | /* Create a function. */ | |
623 | extern gcc_jit_function * | |
624 | gcc_jit_context_new_function (gcc_jit_context *ctxt, | |
625 | gcc_jit_location *loc, | |
626 | enum gcc_jit_function_kind kind, | |
627 | gcc_jit_type *return_type, | |
628 | const char *name, | |
629 | int num_params, | |
630 | gcc_jit_param **params, | |
631 | int is_variadic); | |
632 | ||
633 | /* Create a reference to a builtin function (sometimes called | |
634 | intrinsic functions). */ | |
635 | extern gcc_jit_function * | |
636 | gcc_jit_context_get_builtin_function (gcc_jit_context *ctxt, | |
637 | const char *name); | |
638 | ||
639 | /* Upcasting from function to object. */ | |
640 | extern gcc_jit_object * | |
641 | gcc_jit_function_as_object (gcc_jit_function *func); | |
642 | ||
643 | /* Get a specific param of a function by index. */ | |
644 | extern gcc_jit_param * | |
645 | gcc_jit_function_get_param (gcc_jit_function *func, int index); | |
646 | ||
647 | /* Emit the function in graphviz format. */ | |
648 | extern void | |
649 | gcc_jit_function_dump_to_dot (gcc_jit_function *func, | |
650 | const char *path); | |
651 | ||
652 | /* Create a block. | |
653 | ||
654 | The name can be NULL, or you can give it a meaningful name, which | |
655 | may show up in dumps of the internal representation, and in error | |
656 | messages. */ | |
657 | extern gcc_jit_block * | |
658 | gcc_jit_function_new_block (gcc_jit_function *func, | |
659 | const char *name); | |
660 | ||
661 | /* Upcasting from block to object. */ | |
662 | extern gcc_jit_object * | |
663 | gcc_jit_block_as_object (gcc_jit_block *block); | |
664 | ||
665 | /* Which function is this block within? */ | |
666 | extern gcc_jit_function * | |
667 | gcc_jit_block_get_function (gcc_jit_block *block); | |
668 | ||
669 | /********************************************************************** | |
670 | lvalues, rvalues and expressions. | |
671 | **********************************************************************/ | |
791cfef8 DM |
672 | enum gcc_jit_global_kind |
673 | { | |
674 | /* Global is defined by the client code and visible | |
675 | by name outside of this JIT context via gcc_jit_result_get_global. */ | |
676 | GCC_JIT_GLOBAL_EXPORTED, | |
677 | ||
678 | /* Global is defined by the client code, but is invisible | |
679 | outside of this JIT context. Analogous to a "static" global. */ | |
680 | GCC_JIT_GLOBAL_INTERNAL, | |
681 | ||
682 | /* Global is not defined by the client code; we're merely | |
683 | referring to it. Analogous to using an "extern" global from a | |
684 | header file. */ | |
685 | GCC_JIT_GLOBAL_IMPORTED | |
686 | }; | |
35485da9 DM |
687 | |
688 | extern gcc_jit_lvalue * | |
689 | gcc_jit_context_new_global (gcc_jit_context *ctxt, | |
690 | gcc_jit_location *loc, | |
791cfef8 | 691 | enum gcc_jit_global_kind kind, |
35485da9 DM |
692 | gcc_jit_type *type, |
693 | const char *name); | |
694 | ||
695 | /* Upcasting. */ | |
696 | extern gcc_jit_object * | |
697 | gcc_jit_lvalue_as_object (gcc_jit_lvalue *lvalue); | |
698 | ||
699 | extern gcc_jit_rvalue * | |
700 | gcc_jit_lvalue_as_rvalue (gcc_jit_lvalue *lvalue); | |
701 | ||
702 | extern gcc_jit_object * | |
703 | gcc_jit_rvalue_as_object (gcc_jit_rvalue *rvalue); | |
704 | ||
705 | extern gcc_jit_type * | |
706 | gcc_jit_rvalue_get_type (gcc_jit_rvalue *rvalue); | |
707 | ||
708 | /* Integer constants. */ | |
709 | extern gcc_jit_rvalue * | |
710 | gcc_jit_context_new_rvalue_from_int (gcc_jit_context *ctxt, | |
711 | gcc_jit_type *numeric_type, | |
712 | int value); | |
ccce3b2a DM |
713 | |
714 | extern gcc_jit_rvalue * | |
715 | gcc_jit_context_new_rvalue_from_long (gcc_jit_context *ctxt, | |
716 | gcc_jit_type *numeric_type, | |
717 | long value); | |
35485da9 DM |
718 | |
719 | extern gcc_jit_rvalue * | |
720 | gcc_jit_context_zero (gcc_jit_context *ctxt, | |
721 | gcc_jit_type *numeric_type); | |
722 | ||
723 | extern gcc_jit_rvalue * | |
724 | gcc_jit_context_one (gcc_jit_context *ctxt, | |
725 | gcc_jit_type *numeric_type); | |
726 | ||
727 | /* Floating-point constants. */ | |
728 | extern gcc_jit_rvalue * | |
729 | gcc_jit_context_new_rvalue_from_double (gcc_jit_context *ctxt, | |
730 | gcc_jit_type *numeric_type, | |
731 | double value); | |
732 | ||
733 | /* Pointers. */ | |
734 | extern gcc_jit_rvalue * | |
735 | gcc_jit_context_new_rvalue_from_ptr (gcc_jit_context *ctxt, | |
736 | gcc_jit_type *pointer_type, | |
737 | void *value); | |
738 | ||
739 | extern gcc_jit_rvalue * | |
740 | gcc_jit_context_null (gcc_jit_context *ctxt, | |
741 | gcc_jit_type *pointer_type); | |
742 | ||
743 | /* String literals. */ | |
744 | extern gcc_jit_rvalue * | |
745 | gcc_jit_context_new_string_literal (gcc_jit_context *ctxt, | |
746 | const char *value); | |
747 | ||
748 | enum gcc_jit_unary_op | |
749 | { | |
750 | /* Negate an arithmetic value; analogous to: | |
751 | -(EXPR) | |
752 | in C. */ | |
753 | GCC_JIT_UNARY_OP_MINUS, | |
754 | ||
755 | /* Bitwise negation of an integer value (one's complement); analogous | |
756 | to: | |
757 | ~(EXPR) | |
758 | in C. */ | |
759 | GCC_JIT_UNARY_OP_BITWISE_NEGATE, | |
760 | ||
761 | /* Logical negation of an arithmetic or pointer value; analogous to: | |
762 | !(EXPR) | |
763 | in C. */ | |
18146f45 DM |
764 | GCC_JIT_UNARY_OP_LOGICAL_NEGATE, |
765 | ||
766 | /* Absolute value of an arithmetic expression; analogous to: | |
767 | abs (EXPR) | |
768 | in C. */ | |
769 | GCC_JIT_UNARY_OP_ABS | |
770 | ||
35485da9 DM |
771 | }; |
772 | ||
773 | extern gcc_jit_rvalue * | |
774 | gcc_jit_context_new_unary_op (gcc_jit_context *ctxt, | |
775 | gcc_jit_location *loc, | |
776 | enum gcc_jit_unary_op op, | |
777 | gcc_jit_type *result_type, | |
778 | gcc_jit_rvalue *rvalue); | |
779 | ||
780 | enum gcc_jit_binary_op | |
781 | { | |
782 | /* Addition of arithmetic values; analogous to: | |
783 | (EXPR_A) + (EXPR_B) | |
784 | in C. | |
785 | For pointer addition, use gcc_jit_context_new_array_access. */ | |
786 | GCC_JIT_BINARY_OP_PLUS, | |
787 | ||
788 | /* Subtraction of arithmetic values; analogous to: | |
789 | (EXPR_A) - (EXPR_B) | |
790 | in C. */ | |
791 | GCC_JIT_BINARY_OP_MINUS, | |
792 | ||
793 | /* Multiplication of a pair of arithmetic values; analogous to: | |
794 | (EXPR_A) * (EXPR_B) | |
795 | in C. */ | |
796 | GCC_JIT_BINARY_OP_MULT, | |
797 | ||
798 | /* Quotient of division of arithmetic values; analogous to: | |
799 | (EXPR_A) / (EXPR_B) | |
800 | in C. | |
801 | The result type affects the kind of division: if the result type is | |
802 | integer-based, then the result is truncated towards zero, whereas | |
803 | a floating-point result type indicates floating-point division. */ | |
804 | GCC_JIT_BINARY_OP_DIVIDE, | |
805 | ||
806 | /* Remainder of division of arithmetic values; analogous to: | |
807 | (EXPR_A) % (EXPR_B) | |
808 | in C. */ | |
809 | GCC_JIT_BINARY_OP_MODULO, | |
810 | ||
811 | /* Bitwise AND; analogous to: | |
812 | (EXPR_A) & (EXPR_B) | |
813 | in C. */ | |
814 | GCC_JIT_BINARY_OP_BITWISE_AND, | |
815 | ||
816 | /* Bitwise exclusive OR; analogous to: | |
817 | (EXPR_A) ^ (EXPR_B) | |
818 | in C. */ | |
819 | GCC_JIT_BINARY_OP_BITWISE_XOR, | |
820 | ||
821 | /* Bitwise inclusive OR; analogous to: | |
822 | (EXPR_A) | (EXPR_B) | |
823 | in C. */ | |
824 | GCC_JIT_BINARY_OP_BITWISE_OR, | |
825 | ||
826 | /* Logical AND; analogous to: | |
827 | (EXPR_A) && (EXPR_B) | |
828 | in C. */ | |
829 | GCC_JIT_BINARY_OP_LOGICAL_AND, | |
830 | ||
831 | /* Logical OR; analogous to: | |
832 | (EXPR_A) || (EXPR_B) | |
833 | in C. */ | |
834 | GCC_JIT_BINARY_OP_LOGICAL_OR, | |
835 | ||
836 | /* Left shift; analogous to: | |
837 | (EXPR_A) << (EXPR_B) | |
838 | in C. */ | |
839 | GCC_JIT_BINARY_OP_LSHIFT, | |
840 | ||
841 | /* Right shift; analogous to: | |
842 | (EXPR_A) >> (EXPR_B) | |
843 | in C. */ | |
844 | GCC_JIT_BINARY_OP_RSHIFT | |
845 | }; | |
846 | ||
847 | extern gcc_jit_rvalue * | |
848 | gcc_jit_context_new_binary_op (gcc_jit_context *ctxt, | |
849 | gcc_jit_location *loc, | |
850 | enum gcc_jit_binary_op op, | |
851 | gcc_jit_type *result_type, | |
852 | gcc_jit_rvalue *a, gcc_jit_rvalue *b); | |
853 | ||
854 | /* (Comparisons are treated as separate from "binary_op" to save | |
855 | you having to specify the result_type). */ | |
856 | ||
857 | enum gcc_jit_comparison | |
858 | { | |
859 | /* (EXPR_A) == (EXPR_B). */ | |
860 | GCC_JIT_COMPARISON_EQ, | |
861 | ||
862 | /* (EXPR_A) != (EXPR_B). */ | |
863 | GCC_JIT_COMPARISON_NE, | |
864 | ||
865 | /* (EXPR_A) < (EXPR_B). */ | |
866 | GCC_JIT_COMPARISON_LT, | |
867 | ||
868 | /* (EXPR_A) <=(EXPR_B). */ | |
869 | GCC_JIT_COMPARISON_LE, | |
870 | ||
871 | /* (EXPR_A) > (EXPR_B). */ | |
872 | GCC_JIT_COMPARISON_GT, | |
873 | ||
874 | /* (EXPR_A) >= (EXPR_B). */ | |
875 | GCC_JIT_COMPARISON_GE | |
876 | }; | |
877 | ||
878 | extern gcc_jit_rvalue * | |
879 | gcc_jit_context_new_comparison (gcc_jit_context *ctxt, | |
880 | gcc_jit_location *loc, | |
881 | enum gcc_jit_comparison op, | |
882 | gcc_jit_rvalue *a, gcc_jit_rvalue *b); | |
883 | ||
884 | /* Function calls. */ | |
885 | ||
886 | /* Call of a specific function. */ | |
887 | extern gcc_jit_rvalue * | |
888 | gcc_jit_context_new_call (gcc_jit_context *ctxt, | |
889 | gcc_jit_location *loc, | |
890 | gcc_jit_function *func, | |
891 | int numargs , gcc_jit_rvalue **args); | |
892 | ||
893 | /* Call through a function pointer. */ | |
894 | extern gcc_jit_rvalue * | |
895 | gcc_jit_context_new_call_through_ptr (gcc_jit_context *ctxt, | |
896 | gcc_jit_location *loc, | |
897 | gcc_jit_rvalue *fn_ptr, | |
898 | int numargs, gcc_jit_rvalue **args); | |
899 | ||
900 | /* Type-coercion. | |
901 | ||
902 | Currently only a limited set of conversions are possible: | |
903 | int <-> float | |
904 | int <-> bool */ | |
905 | extern gcc_jit_rvalue * | |
906 | gcc_jit_context_new_cast (gcc_jit_context *ctxt, | |
907 | gcc_jit_location *loc, | |
908 | gcc_jit_rvalue *rvalue, | |
909 | gcc_jit_type *type); | |
910 | ||
911 | extern gcc_jit_lvalue * | |
912 | gcc_jit_context_new_array_access (gcc_jit_context *ctxt, | |
913 | gcc_jit_location *loc, | |
914 | gcc_jit_rvalue *ptr, | |
915 | gcc_jit_rvalue *index); | |
916 | ||
917 | /* Field access is provided separately for both lvalues and rvalues. */ | |
918 | ||
919 | /* Accessing a field of an lvalue of struct type, analogous to: | |
920 | (EXPR).field = ...; | |
921 | in C. */ | |
922 | extern gcc_jit_lvalue * | |
923 | gcc_jit_lvalue_access_field (gcc_jit_lvalue *struct_or_union, | |
924 | gcc_jit_location *loc, | |
925 | gcc_jit_field *field); | |
926 | ||
927 | /* Accessing a field of an rvalue of struct type, analogous to: | |
928 | (EXPR).field | |
929 | in C. */ | |
930 | extern gcc_jit_rvalue * | |
931 | gcc_jit_rvalue_access_field (gcc_jit_rvalue *struct_or_union, | |
932 | gcc_jit_location *loc, | |
933 | gcc_jit_field *field); | |
934 | ||
935 | /* Accessing a field of an rvalue of pointer type, analogous to: | |
936 | (EXPR)->field | |
937 | in C, itself equivalent to (*EXPR).FIELD */ | |
938 | extern gcc_jit_lvalue * | |
939 | gcc_jit_rvalue_dereference_field (gcc_jit_rvalue *ptr, | |
940 | gcc_jit_location *loc, | |
941 | gcc_jit_field *field); | |
942 | ||
943 | /* Dereferencing a pointer; analogous to: | |
944 | *(EXPR) | |
945 | */ | |
946 | extern gcc_jit_lvalue * | |
947 | gcc_jit_rvalue_dereference (gcc_jit_rvalue *rvalue, | |
948 | gcc_jit_location *loc); | |
949 | ||
950 | /* Taking the address of an lvalue; analogous to: | |
951 | &(EXPR) | |
952 | in C. */ | |
953 | extern gcc_jit_rvalue * | |
954 | gcc_jit_lvalue_get_address (gcc_jit_lvalue *lvalue, | |
955 | gcc_jit_location *loc); | |
956 | ||
957 | extern gcc_jit_lvalue * | |
958 | gcc_jit_function_new_local (gcc_jit_function *func, | |
959 | gcc_jit_location *loc, | |
960 | gcc_jit_type *type, | |
961 | const char *name); | |
962 | ||
963 | /********************************************************************** | |
964 | Statement-creation. | |
965 | **********************************************************************/ | |
966 | ||
967 | /* Add evaluation of an rvalue, discarding the result | |
968 | (e.g. a function call that "returns" void). | |
969 | ||
970 | This is equivalent to this C code: | |
971 | ||
972 | (void)expression; | |
973 | */ | |
974 | extern void | |
975 | gcc_jit_block_add_eval (gcc_jit_block *block, | |
976 | gcc_jit_location *loc, | |
977 | gcc_jit_rvalue *rvalue); | |
978 | ||
979 | /* Add evaluation of an rvalue, assigning the result to the given | |
980 | lvalue. | |
981 | ||
982 | This is roughly equivalent to this C code: | |
983 | ||
984 | lvalue = rvalue; | |
985 | */ | |
986 | extern void | |
987 | gcc_jit_block_add_assignment (gcc_jit_block *block, | |
988 | gcc_jit_location *loc, | |
989 | gcc_jit_lvalue *lvalue, | |
990 | gcc_jit_rvalue *rvalue); | |
991 | ||
992 | /* Add evaluation of an rvalue, using the result to modify an | |
993 | lvalue. | |
994 | ||
995 | This is analogous to "+=" and friends: | |
996 | ||
997 | lvalue += rvalue; | |
998 | lvalue *= rvalue; | |
999 | lvalue /= rvalue; | |
1000 | etc */ | |
1001 | extern void | |
1002 | gcc_jit_block_add_assignment_op (gcc_jit_block *block, | |
1003 | gcc_jit_location *loc, | |
1004 | gcc_jit_lvalue *lvalue, | |
1005 | enum gcc_jit_binary_op op, | |
1006 | gcc_jit_rvalue *rvalue); | |
1007 | ||
1008 | /* Add a no-op textual comment to the internal representation of the | |
1009 | code. It will be optimized away, but will be visible in the dumps | |
1010 | seen via | |
1011 | GCC_JIT_BOOL_OPTION_DUMP_INITIAL_TREE | |
1012 | and | |
1013 | GCC_JIT_BOOL_OPTION_DUMP_INITIAL_GIMPLE, | |
1014 | and thus may be of use when debugging how your project's internal | |
1015 | representation gets converted to the libgccjit IR. */ | |
1016 | extern void | |
1017 | gcc_jit_block_add_comment (gcc_jit_block *block, | |
1018 | gcc_jit_location *loc, | |
1019 | const char *text); | |
1020 | ||
1021 | /* Terminate a block by adding evaluation of an rvalue, branching on the | |
1022 | result to the appropriate successor block. | |
1023 | ||
1024 | This is roughly equivalent to this C code: | |
1025 | ||
1026 | if (boolval) | |
1027 | goto on_true; | |
1028 | else | |
1029 | goto on_false; | |
1030 | ||
1031 | block, boolval, on_true, and on_false must be non-NULL. */ | |
1032 | extern void | |
1033 | gcc_jit_block_end_with_conditional (gcc_jit_block *block, | |
1034 | gcc_jit_location *loc, | |
1035 | gcc_jit_rvalue *boolval, | |
1036 | gcc_jit_block *on_true, | |
1037 | gcc_jit_block *on_false); | |
1038 | ||
1039 | /* Terminate a block by adding a jump to the given target block. | |
1040 | ||
1041 | This is roughly equivalent to this C code: | |
1042 | ||
1043 | goto target; | |
1044 | */ | |
1045 | extern void | |
1046 | gcc_jit_block_end_with_jump (gcc_jit_block *block, | |
1047 | gcc_jit_location *loc, | |
1048 | gcc_jit_block *target); | |
1049 | ||
1050 | /* Terminate a block by adding evaluation of an rvalue, returning the value. | |
1051 | ||
1052 | This is roughly equivalent to this C code: | |
1053 | ||
1054 | return expression; | |
1055 | */ | |
1056 | extern void | |
1057 | gcc_jit_block_end_with_return (gcc_jit_block *block, | |
1058 | gcc_jit_location *loc, | |
1059 | gcc_jit_rvalue *rvalue); | |
1060 | ||
1061 | /* Terminate a block by adding a valueless return, for use within a function | |
1062 | with "void" return type. | |
1063 | ||
1064 | This is equivalent to this C code: | |
1065 | ||
1066 | return; | |
1067 | */ | |
1068 | extern void | |
1069 | gcc_jit_block_end_with_void_return (gcc_jit_block *block, | |
1070 | gcc_jit_location *loc); | |
1071 | ||
1072 | /********************************************************************** | |
1073 | Nested contexts. | |
1074 | **********************************************************************/ | |
1075 | ||
1076 | /* Given an existing JIT context, create a child context. | |
1077 | ||
1078 | The child inherits a copy of all option-settings from the parent. | |
1079 | ||
1080 | The child can reference objects created within the parent, but not | |
1081 | vice-versa. | |
1082 | ||
1083 | The lifetime of the child context must be bounded by that of the | |
1084 | parent: you should release a child context before releasing the parent | |
1085 | context. | |
1086 | ||
1087 | If you use a function from a parent context within a child context, | |
1088 | you have to compile the parent context before you can compile the | |
1089 | child context, and the gcc_jit_result of the parent context must | |
1090 | outlive the gcc_jit_result of the child context. | |
1091 | ||
1092 | This allows caching of shared initializations. For example, you could | |
1093 | create types and declarations of global functions in a parent context | |
1094 | once within a process, and then create child contexts whenever a | |
1095 | function or loop becomes hot. Each such child context can be used for | |
1096 | JIT-compiling just one function or loop, but can reference types | |
1097 | and helper functions created within the parent context. | |
1098 | ||
1099 | Contexts can be arbitrarily nested, provided the above rules are | |
1100 | followed, but it's probably not worth going above 2 or 3 levels, and | |
1101 | there will likely be a performance hit for such nesting. */ | |
1102 | ||
1103 | extern gcc_jit_context * | |
1104 | gcc_jit_context_new_child_context (gcc_jit_context *parent_ctxt); | |
1105 | ||
463366a0 DM |
1106 | /********************************************************************** |
1107 | Implementation support. | |
1108 | **********************************************************************/ | |
1109 | ||
86d0ac88 DM |
1110 | /* Write C source code into "path" that can be compiled into a |
1111 | self-contained executable (i.e. with libgccjit as the only dependency). | |
1112 | The generated code will attempt to replay the API calls that have been | |
1113 | made into the given context. | |
1114 | ||
1115 | This may be useful when debugging the library or client code, for | |
1116 | reducing a complicated recipe for reproducing a bug into a simpler | |
1117 | form. | |
1118 | ||
1119 | Typically you need to supply the option "-Wno-unused-variable" when | |
1120 | compiling the generated file (since the result of each API call is | |
1121 | assigned to a unique variable within the generated C source, and not | |
1122 | all are necessarily then used). */ | |
1123 | ||
1124 | extern void | |
1125 | gcc_jit_context_dump_reproducer_to_file (gcc_jit_context *ctxt, | |
1126 | const char *path); | |
1127 | ||
463366a0 DM |
1128 | /* Enable the dumping of a specific set of internal state from the |
1129 | compilation, capturing the result in-memory as a buffer. | |
1130 | ||
1131 | Parameter "dumpname" corresponds to the equivalent gcc command-line | |
1132 | option, without the "-fdump-" prefix. | |
1133 | For example, to get the equivalent of "-fdump-tree-vrp1", supply | |
1134 | "tree-vrp1". | |
1135 | The context directly stores the dumpname as a (const char *), so the | |
1136 | passed string must outlive the context. | |
1137 | ||
fdce7209 DM |
1138 | gcc_jit_context_compile and gcc_jit_context_to_file |
1139 | will capture the dump as a dynamically-allocated buffer, writing | |
1140 | it to ``*out_ptr``. | |
463366a0 DM |
1141 | |
1142 | The caller becomes responsible for calling | |
1143 | free (*out_ptr) | |
fdce7209 DM |
1144 | each time that gcc_jit_context_compile or gcc_jit_context_to_file |
1145 | are called. *out_ptr will be written to, either with the address of a | |
1146 | buffer, or with NULL if an error occurred. | |
463366a0 DM |
1147 | |
1148 | This API entrypoint is likely to be less stable than the others. | |
1149 | In particular, both the precise dumpnames, and the format and content | |
1150 | of the dumps are subject to change. | |
1151 | ||
1152 | It exists primarily for writing the library's own test suite. */ | |
1153 | ||
1154 | extern void | |
1155 | gcc_jit_context_enable_dump (gcc_jit_context *ctxt, | |
1156 | const char *dumpname, | |
1157 | char **out_ptr); | |
1158 | ||
35485da9 DM |
1159 | #ifdef __cplusplus |
1160 | } | |
1161 | #endif /* __cplusplus */ | |
1162 | ||
1163 | #endif /* LIBGCCJIT_H */ |