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735a0e33 | 1 | /* Output routines for graphical representation. |
a5cad800 | 2 | Copyright (C) 1998, 1999 Free Software Foundation, Inc. |
735a0e33 UD |
3 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. |
4 | ||
5 | This file is part of GNU CC. | |
6 | ||
7 | GNU CC 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 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU CC 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 GNU CC; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include <config.h> | |
23 | #include "system.h" | |
24 | ||
25 | #include "rtl.h" | |
26 | #include "flags.h" | |
27 | #include "output.h" | |
49ad7cfa | 28 | #include "function.h" |
735a0e33 UD |
29 | #include "hard-reg-set.h" |
30 | #include "basic-block.h" | |
31 | #include "toplev.h" | |
6a2cc2ac | 32 | #include "graph.h" |
735a0e33 UD |
33 | |
34 | static const char *graph_ext[] = | |
35 | { | |
36 | /* no_graph */ "", | |
37 | /* vcg */ ".vcg", | |
38 | }; | |
39 | ||
5f06c983 KG |
40 | static void start_fct PROTO ((FILE *)); |
41 | static void start_bb PROTO ((FILE *, int)); | |
42 | static void node_data PROTO ((FILE *, rtx)); | |
43 | static void draw_edge PROTO ((FILE *, int, int, int, int)); | |
44 | static void end_fct PROTO ((FILE *)); | |
45 | static void end_bb PROTO ((FILE *)); | |
46 | ||
735a0e33 UD |
47 | /* Output text for new basic block. */ |
48 | static void | |
49 | start_fct (fp) | |
50 | FILE *fp; | |
51 | { | |
52 | ||
53 | switch (graph_dump_format) | |
54 | { | |
55 | case vcg: | |
56 | fprintf (fp, "\ | |
57 | graph: { title: \"%s\"\nfolding: 1\nhidden: 2\nnode: { title: \"%s.0\" }\n", | |
58 | current_function_name, current_function_name); | |
59 | break; | |
60 | case no_graph: | |
61 | break; | |
62 | } | |
63 | } | |
64 | ||
65 | static void | |
66 | start_bb (fp, bb) | |
67 | FILE *fp; | |
68 | int bb; | |
69 | { | |
70 | switch (graph_dump_format) | |
71 | { | |
72 | case vcg: | |
73 | fprintf (fp, "\ | |
74 | graph: {\ntitle: \"%s.BB%d\"\nfolding: 1\ncolor: lightblue\n\ | |
75 | label: \"basic block %d", | |
76 | current_function_name, bb, bb); | |
77 | break; | |
78 | case no_graph: | |
79 | break; | |
80 | } | |
81 | ||
82 | #if 0 | |
83 | /* FIXME Should this be printed? It makes the graph significantly larger. */ | |
84 | ||
85 | /* Print the live-at-start register list. */ | |
86 | fputc ('\n', fp); | |
87 | EXECUTE_IF_SET_IN_REG_SET (basic_block_live_at_start[bb], 0, i, | |
88 | { | |
89 | fprintf (fp, " %d", i); | |
90 | if (i < FIRST_PSEUDO_REGISTER) | |
91 | fprintf (fp, " [%s]", | |
92 | reg_names[i]); | |
93 | }); | |
94 | #endif | |
95 | ||
96 | switch (graph_dump_format) | |
97 | { | |
98 | case vcg: | |
99 | fputs ("\"\n\n", fp); | |
100 | break; | |
101 | case no_graph: | |
102 | break; | |
103 | } | |
104 | } | |
105 | ||
a30d557c | 106 | static void |
735a0e33 UD |
107 | node_data (fp, tmp_rtx) |
108 | FILE *fp; | |
109 | rtx tmp_rtx; | |
110 | { | |
735a0e33 UD |
111 | |
112 | if (PREV_INSN (tmp_rtx) == 0) | |
113 | { | |
114 | /* This is the first instruction. Add an edge from the starting | |
115 | block. */ | |
116 | switch (graph_dump_format) | |
117 | { | |
118 | case vcg: | |
119 | fprintf (fp, "\ | |
120 | edge: { sourcename: \"%s.0\" targetname: \"%s.%d\" }\n", | |
121 | current_function_name, | |
122 | current_function_name, XINT (tmp_rtx, 0)); | |
123 | break; | |
124 | case no_graph: | |
125 | break; | |
126 | } | |
127 | } | |
128 | ||
129 | switch (graph_dump_format) | |
130 | { | |
131 | case vcg: | |
132 | fprintf (fp, "node: {\n title: \"%s.%d\"\n color: %s\n \ | |
133 | label: \"%s %d\n", | |
134 | current_function_name, XINT (tmp_rtx, 0), | |
135 | GET_CODE (tmp_rtx) == NOTE ? "lightgrey" | |
136 | : GET_CODE (tmp_rtx) == INSN ? "green" | |
137 | : GET_CODE (tmp_rtx) == JUMP_INSN ? "darkgreen" | |
138 | : GET_CODE (tmp_rtx) == CALL_INSN ? "darkgreen" | |
139 | : GET_CODE (tmp_rtx) == CODE_LABEL ? "\ | |
140 | darkgrey\n shape: ellipse" : "white", | |
141 | GET_RTX_NAME (GET_CODE (tmp_rtx)), XINT (tmp_rtx, 0)); | |
142 | break; | |
143 | case no_graph: | |
144 | break; | |
145 | } | |
146 | ||
147 | /* Print the RTL. */ | |
148 | if (GET_CODE (tmp_rtx) == NOTE) | |
149 | { | |
150 | static const char *note_names[] = | |
151 | { | |
152 | NULL, | |
153 | "deleted", | |
154 | "block_beg", | |
155 | "block_end", | |
156 | "loop_beg", | |
157 | "loop_end", | |
158 | "function_end", | |
159 | "setjmp", | |
160 | "loop_cont", | |
161 | "loop_vtop", | |
162 | "prologue_end", | |
163 | "epilogue_beg", | |
164 | "deleted_label", | |
165 | "function_beg", | |
166 | "eh_region_beg", | |
167 | "eh_region_end", | |
168 | "repeated_line_number", | |
169 | "range_start", | |
170 | "range_end", | |
e881bb1b RH |
171 | "live", |
172 | "basic_block" | |
735a0e33 UD |
173 | }; |
174 | ||
175 | fprintf (fp, " %s", | |
176 | XINT (tmp_rtx, 4) < 0 ? note_names[-XINT (tmp_rtx, 4)] : ""); | |
177 | } | |
178 | else if (GET_RTX_CLASS (GET_CODE (tmp_rtx)) == 'i') | |
a30d557c | 179 | print_rtl_single (fp, PATTERN (tmp_rtx)); |
735a0e33 | 180 | else |
a30d557c | 181 | print_rtl_single (fp, tmp_rtx); |
735a0e33 UD |
182 | |
183 | switch (graph_dump_format) | |
184 | { | |
185 | case vcg: | |
186 | fputs ("\"\n}\n", fp); | |
187 | break; | |
188 | case no_graph: | |
189 | break; | |
190 | } | |
735a0e33 UD |
191 | } |
192 | ||
193 | static void | |
194 | draw_edge (fp, from, to, bb_edge, class) | |
195 | FILE *fp; | |
196 | int from; | |
197 | int to; | |
198 | int bb_edge; | |
199 | int class; | |
200 | { | |
5f06c983 | 201 | const char * color; |
735a0e33 UD |
202 | switch (graph_dump_format) |
203 | { | |
204 | case vcg: | |
e881bb1b RH |
205 | color = ""; |
206 | if (class == 2) | |
207 | color = "color: red "; | |
208 | else if (bb_edge) | |
209 | color = "color: blue "; | |
210 | else if (class == 3) | |
211 | color = "color: green "; | |
735a0e33 UD |
212 | fprintf (fp, |
213 | "edge: { sourcename: \"%s.%d\" targetname: \"%s.%d\" %s", | |
214 | current_function_name, from, | |
e881bb1b | 215 | current_function_name, to, color); |
735a0e33 UD |
216 | if (class) |
217 | fprintf (fp, "class: %d ", class); | |
218 | fputs ("}\n", fp); | |
219 | break; | |
220 | case no_graph: | |
221 | break; | |
222 | } | |
223 | } | |
224 | ||
225 | static void | |
5f06c983 | 226 | end_bb (fp) |
735a0e33 | 227 | FILE *fp; |
735a0e33 UD |
228 | { |
229 | switch (graph_dump_format) | |
230 | { | |
231 | case vcg: | |
232 | fputs ("}\n", fp); | |
233 | break; | |
234 | case no_graph: | |
235 | break; | |
236 | } | |
237 | } | |
238 | ||
239 | static void | |
240 | end_fct (fp) | |
241 | FILE *fp; | |
242 | { | |
243 | switch (graph_dump_format) | |
244 | { | |
245 | case vcg: | |
246 | fprintf (fp, "node: { title: \"%s.999999\" label: \"END\" }\n}\n", | |
247 | current_function_name); | |
248 | break; | |
249 | case no_graph: | |
250 | break; | |
251 | } | |
252 | } | |
253 | \f | |
254 | /* Like print_rtl, but also print out live information for the start of each | |
255 | basic block. */ | |
256 | void | |
257 | print_rtl_graph_with_bb (base, suffix, rtx_first) | |
258 | const char *base; | |
259 | const char *suffix; | |
260 | rtx rtx_first; | |
261 | { | |
262 | register rtx tmp_rtx; | |
263 | size_t namelen = strlen (base); | |
264 | size_t suffixlen = strlen (suffix); | |
265 | size_t extlen = strlen (graph_ext[graph_dump_format]) + 1; | |
266 | char *buf = (char *) alloca (namelen + suffixlen + extlen); | |
267 | FILE *fp; | |
268 | ||
e881bb1b RH |
269 | if (basic_block_info == NULL) |
270 | return; | |
735a0e33 UD |
271 | |
272 | memcpy (buf, base, namelen); | |
273 | memcpy (buf + namelen, suffix, suffixlen); | |
274 | memcpy (buf + namelen + suffixlen, graph_ext[graph_dump_format], extlen); | |
275 | ||
276 | fp = fopen (buf, "a"); | |
277 | if (fp == NULL) | |
278 | return; | |
279 | ||
280 | if (rtx_first == 0) | |
281 | fprintf (fp, "(nil)\n"); | |
282 | else | |
283 | { | |
e881bb1b | 284 | int i; |
735a0e33 UD |
285 | enum bb_state { NOT_IN_BB, IN_ONE_BB, IN_MULTIPLE_BB }; |
286 | int max_uid = get_max_uid (); | |
287 | int *start = (int *) alloca (max_uid * sizeof (int)); | |
288 | int *end = (int *) alloca (max_uid * sizeof (int)); | |
289 | enum bb_state *in_bb_p = (enum bb_state *) | |
290 | alloca (max_uid * sizeof (enum bb_state)); | |
e881bb1b | 291 | basic_block bb; |
735a0e33 UD |
292 | |
293 | for (i = 0; i < max_uid; ++i) | |
294 | { | |
295 | start[i] = end[i] = -1; | |
296 | in_bb_p[i] = NOT_IN_BB; | |
297 | } | |
298 | ||
299 | for (i = n_basic_blocks - 1; i >= 0; --i) | |
300 | { | |
301 | rtx x; | |
e881bb1b RH |
302 | bb = BASIC_BLOCK (i); |
303 | start[INSN_UID (bb->head)] = i; | |
304 | end[INSN_UID (bb->end)] = i; | |
305 | for (x = bb->head; x != NULL_RTX; x = NEXT_INSN (x)) | |
735a0e33 UD |
306 | { |
307 | in_bb_p[INSN_UID (x)] | |
308 | = (in_bb_p[INSN_UID (x)] == NOT_IN_BB) | |
309 | ? IN_ONE_BB : IN_MULTIPLE_BB; | |
e881bb1b | 310 | if (x == bb->end) |
735a0e33 UD |
311 | break; |
312 | } | |
313 | } | |
314 | ||
735a0e33 UD |
315 | /* Tell print-rtl that we want graph output. */ |
316 | dump_for_graph = 1; | |
317 | ||
318 | /* Start new function. */ | |
319 | start_fct (fp); | |
320 | ||
321 | for (tmp_rtx = NEXT_INSN (rtx_first); NULL != tmp_rtx; | |
322 | tmp_rtx = NEXT_INSN (tmp_rtx)) | |
323 | { | |
735a0e33 UD |
324 | int edge_printed = 0; |
325 | rtx next_insn; | |
326 | ||
327 | if (start[INSN_UID (tmp_rtx)] < 0 && end[INSN_UID (tmp_rtx)] < 0) | |
328 | { | |
329 | if (GET_CODE (tmp_rtx) == BARRIER) | |
330 | continue; | |
331 | if (GET_CODE (tmp_rtx) == NOTE | |
332 | && (1 || in_bb_p[INSN_UID (tmp_rtx)] == NOT_IN_BB)) | |
333 | continue; | |
334 | } | |
335 | ||
e881bb1b | 336 | if ((i = start[INSN_UID (tmp_rtx)]) >= 0) |
735a0e33 UD |
337 | { |
338 | /* We start a subgraph for each basic block. */ | |
e881bb1b | 339 | start_bb (fp, i); |
735a0e33 | 340 | |
e881bb1b | 341 | if (i == 0) |
735a0e33 UD |
342 | draw_edge (fp, 0, INSN_UID (tmp_rtx), 1, 0); |
343 | } | |
344 | ||
345 | /* Print the data for this node. */ | |
a30d557c | 346 | node_data (fp, tmp_rtx); |
735a0e33 UD |
347 | next_insn = next_nonnote_insn (tmp_rtx); |
348 | ||
e881bb1b | 349 | if ((i = end[INSN_UID (tmp_rtx)]) >= 0) |
735a0e33 | 350 | { |
e881bb1b RH |
351 | edge e; |
352 | ||
353 | bb = BASIC_BLOCK (i); | |
735a0e33 UD |
354 | |
355 | /* End of the basic block. */ | |
5f06c983 | 356 | end_bb (fp); |
735a0e33 UD |
357 | |
358 | /* Now specify the edges to all the successors of this | |
359 | basic block. */ | |
e881bb1b | 360 | for (e = bb->succ; e ; e = e->succ_next) |
735a0e33 | 361 | { |
e881bb1b | 362 | if (e->dest != EXIT_BLOCK_PTR) |
735a0e33 | 363 | { |
e881bb1b | 364 | rtx block_head = e->dest->head; |
735a0e33 UD |
365 | |
366 | draw_edge (fp, INSN_UID (tmp_rtx), | |
367 | INSN_UID (block_head), | |
e881bb1b RH |
368 | next_insn != block_head, |
369 | (e->flags & EDGE_ABNORMAL ? 2 : 0)); | |
735a0e33 | 370 | |
e881bb1b | 371 | if (block_head == next_insn) |
735a0e33 UD |
372 | edge_printed = 1; |
373 | } | |
e881bb1b | 374 | else |
735a0e33 UD |
375 | { |
376 | draw_edge (fp, INSN_UID (tmp_rtx), 999999, | |
e881bb1b RH |
377 | next_insn != 0, |
378 | (e->flags & EDGE_ABNORMAL ? 2 : 0)); | |
735a0e33 UD |
379 | |
380 | if (next_insn == 0) | |
381 | edge_printed = 1; | |
382 | } | |
735a0e33 UD |
383 | } |
384 | } | |
385 | ||
386 | if (!edge_printed) | |
387 | { | |
388 | /* Don't print edges to barriers. */ | |
389 | if (next_insn == 0 | |
390 | || GET_CODE (next_insn) != BARRIER) | |
391 | draw_edge (fp, XINT (tmp_rtx, 0), | |
392 | next_insn ? INSN_UID (next_insn) : 999999, 0, 0); | |
393 | else | |
394 | { | |
e881bb1b RH |
395 | /* We draw the remaining edges in class 3. We have |
396 | to skip over the barrier since these nodes are | |
735a0e33 UD |
397 | not printed at all. */ |
398 | do | |
399 | next_insn = NEXT_INSN (next_insn); | |
400 | while (next_insn | |
401 | && (GET_CODE (next_insn) == NOTE | |
402 | || GET_CODE (next_insn) == BARRIER)); | |
403 | ||
404 | draw_edge (fp, XINT (tmp_rtx, 0), | |
e881bb1b | 405 | next_insn ? INSN_UID (next_insn) : 999999, 0, 3); |
735a0e33 UD |
406 | } |
407 | } | |
408 | } | |
409 | ||
410 | dump_for_graph = 0; | |
411 | ||
412 | end_fct (fp); | |
413 | } | |
414 | ||
415 | fclose (fp); | |
416 | } | |
417 | ||
418 | ||
419 | /* Similar as clean_dump_file, but this time for graph output files. */ | |
420 | void | |
421 | clean_graph_dump_file (base, suffix) | |
422 | const char *base; | |
423 | const char *suffix; | |
424 | { | |
425 | size_t namelen = strlen (base); | |
426 | size_t suffixlen = strlen (suffix); | |
427 | size_t extlen = strlen (graph_ext[graph_dump_format]) + 1; | |
428 | char *buf = (char *) alloca (namelen + extlen + suffixlen); | |
429 | FILE *fp; | |
430 | ||
431 | memcpy (buf, base, namelen); | |
432 | memcpy (buf + namelen, suffix, suffixlen); | |
433 | memcpy (buf + namelen + suffixlen, graph_ext[graph_dump_format], extlen); | |
434 | ||
435 | fp = fopen (buf, "w"); | |
436 | ||
437 | if (fp == NULL) | |
438 | pfatal_with_name (buf); | |
439 | ||
440 | switch (graph_dump_format) | |
441 | { | |
442 | case vcg: | |
443 | fputs ("graph: {\nport_sharing: no\n", fp); | |
444 | break; | |
445 | case no_graph: | |
446 | abort (); | |
447 | } | |
448 | ||
449 | fclose (fp); | |
450 | } | |
451 | ||
452 | ||
453 | /* Do final work on the graph output file. */ | |
454 | void | |
455 | finish_graph_dump_file (base, suffix) | |
456 | const char *base; | |
457 | const char *suffix; | |
458 | { | |
459 | size_t namelen = strlen (base); | |
460 | size_t suffixlen = strlen (suffix); | |
461 | size_t extlen = strlen (graph_ext[graph_dump_format]) + 1; | |
462 | char *buf = (char *) alloca (namelen + suffixlen + extlen); | |
463 | FILE *fp; | |
464 | ||
465 | memcpy (buf, base, namelen); | |
466 | memcpy (buf + namelen, suffix, suffixlen); | |
467 | memcpy (buf + namelen + suffixlen, graph_ext[graph_dump_format], extlen); | |
468 | ||
469 | fp = fopen (buf, "a"); | |
470 | if (fp != NULL) | |
471 | { | |
472 | switch (graph_dump_format) | |
473 | { | |
474 | case vcg: | |
475 | fputs ("}\n", fp); | |
476 | break; | |
477 | case no_graph: | |
478 | abort (); | |
479 | } | |
480 | ||
481 | fclose (fp); | |
482 | } | |
483 | } |