nsz Git - libfirm/blob - ir/be/bechordal_draw.c

   1 /*
   2  * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   6  * This file may be distributed and/or modified under the terms of the
   7  * GNU General Public License version 2 as published by the Free Software
   8  * Foundation and appearing in the file LICENSE.GPL included in the
   9  * packaging of this file.
  10  *
  11  * Licensees holding valid libFirm Professional Edition licenses may use
  12  * this file in accordance with the libFirm Commercial License.
  13  * Agreement provided with the Software.
  14  *
  15  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief       Paint chordal graphs.
  23  * @author      Sebastian Hack
  24  * @date        12.05.2005
  25  * @version     $Id$
  26  */
  27 #ifdef HAVE_CONFIG_H
  28 #include "config.h"
  29 #endif
  30
  31 #include <limits.h>
  32
  33 #include "pmap.h"
  34 #include "pset.h"
  35
  36 #include "irgwalk.h"
  37 #include "irprintf.h"
  38 #include "iredges_t.h"
  39 #include "irtools.h"
  40
  41 #include "belive_t.h"
  42 #include "bechordal_t.h"
  43 #include "besched_t.h"
  44 #include "bechordal_draw.h"
  45 #include "beirg_t.h"
  46
  47 typedef struct {
  48         be_chordal_env_t *env;
  49         plotter_t inh;
  50         const color_t *color;
  51         int width;
  52 } base_plotter_t;
  53
  54 #define decl_self(type, from) \
  55   type *self = (type *) from
  56
  57 static void set_color(plotter_t *_self, const color_t *color) {
  58         decl_self(base_plotter_t, _self);
  59         self->color = color;
  60 }
  61
  62 static const color_t *get_color(const plotter_t *_self) {
  63         decl_self(const base_plotter_t, _self);
  64         return self->color;
  65 }
  66
  67 static void set_width(plotter_t *_self, int width) {
  68         decl_self(base_plotter_t, _self);
  69         self->width = width;
  70 }
  71
  72 static int get_width(const plotter_t *_self) {
  73         decl_self(const base_plotter_t, _self);
  74         return self->width;
  75 }
  76
  77 static void plotter_default_free(plotter_t *self) {
  78         (void) self;
  79 }
  80
  81 typedef struct {
  82         base_plotter_t inh;
  83         const char     *filename;
  84         FILE           *f;
  85 } ps_plotter_t;
  86
  87
  88 /*
  89   ____  ____    ____  _       _   _
  90  |  _ \/ ___|  |  _ \| | ___ | |_| |_ ___ _ __
  91  | |_) \___ \  | |_) | |/ _ \| __| __/ _ \ '__|
  92  |  __/ ___) | |  __/| | (_) | |_| ||  __/ |
  93  |_|   |____/  |_|   |_|\___/ \__|\__\___|_|
  94
  95 */
  96
  97 static void ps_begin(plotter_t *_self, const rect_t *vis)
  98 {
  99         FILE *f;
 100         decl_self(ps_plotter_t, _self);
 101
 102         f = self->f = fopen(self->filename, "wt");
 103         fprintf(f, "%%!PS-Adobe-2.0\n");
 104         fprintf(f, "%%%%BoundingBox: %d %d %d %d\n", vis->x, vis->y, vis->w, vis->h);
 105 #if 0
 106         fprintf(f, "/mainfont /Courier findfont %f scalefont def\n", 10.0);
 107         fprintf(f, "mainfont setfont\n");
 108 #endif /* if 0 */
 109 }
 110
 111 static void ps_setcolor(plotter_t *_self, const color_t *color)
 112 {
 113         decl_self(ps_plotter_t, _self);
 114         set_color(_self, color);
 115
 116         fprintf(self->f, "%.2f %.2f %.2f setrgbcolor\n",
 117                 color->r, color->g, color->b);
 118 }
 119
 120 static void ps_line(plotter_t *_self, int x1, int y1, int x2, int y2)
 121 {
 122         decl_self(ps_plotter_t, _self);
 123
 124         fprintf(self->f, "%d %d moveto\n", x1, y1);
 125         fprintf(self->f, "%d %d lineto\n", x2, y2);
 126         fprintf(self->f, "stroke\n");
 127 }
 128
 129 static void ps_box(plotter_t *_self, const rect_t *rect)
 130 {
 131         decl_self(ps_plotter_t, _self);
 132
 133         fprintf(self->f, "%d %d %d %d rectstroke\n",
 134                 rect->x, rect->y, rect->w, rect->h);
 135 }
 136
 137 void ps_text(plotter_t *_self, int x, int y, const char *str)
 138 {
 139         decl_self(ps_plotter_t, _self);
 140
 141         fprintf(self->f, "%d %d moveto\n", x, y);
 142         fprintf(self->f, "(%s) show\n", str);
 143 }
 144
 145 static void ps_finish(plotter_t *_self)
 146 {
 147         decl_self(ps_plotter_t, _self);
 148         fclose(self->f);
 149 }
 150
 151 const plotter_if_t ps_plotter_vtab = {
 152         ps_begin,
 153         ps_setcolor,
 154         get_color,
 155         set_width,
 156         get_width,
 157         ps_line,
 158         ps_box,
 159         ps_text,
 160         ps_finish,
 161         plotter_default_free
 162 };
 163
 164 plotter_t *new_plotter_ps(const char *filename)
 165 {
 166         ps_plotter_t *ps_plotter = xmalloc(sizeof(*ps_plotter));
 167         plotter_t *p = (plotter_t *) ps_plotter;
 168
 169         ps_plotter->filename = filename;
 170         p->vtab = &ps_plotter_vtab;
 171         return p;
 172 }
 173
 174 /*
 175    _____ _ _     _____  ____  _       _   _
 176   |_   _(_) | __|__  / |  _ \| | ___ | |_| |_ ___ _ __
 177     | | | | |/ /  / /  | |_) | |/ _ \| __| __/ _ \ '__|
 178     | | | |   <  / /_  |  __/| | (_) | |_| ||  __/ |
 179     |_| |_|_|\_\/____| |_|   |_|\___/ \__|\__\___|_|
 180
 181 */
 182
 183 /* chriswue: the following seems to be unused and can be deleted? */
 184 #if 0
 185 typedef struct {
 186         base_plotter_t inh;
 187         const char *filename;
 188         FILE *f;
 189 } tikz_plotter_t;
 190
 191 static void tikz_begin(plotter_t *_self, const rect_t *vis)
 192 {
 193         FILE *f;
 194         decl_self(tikz_plotter_t, _self);
 195
 196         f = self->f = fopen(self->filename, "wt");
 197         fprintf(f, "\\begin{tikzpicture}\n");
 198 }
 199
 200 static void tikz_setcolor(plotter_t *_self, const color_t *color)
 201 {
 202         set_color(_self, color);
 203 }
 204
 205 static void tikz_line(plotter_t *_self, int x1, int y1, int x2, int y2)
 206 {
 207         decl_self(tikz_plotter_t, _self);
 208         fprintf(self->f, "\t\\draw (%d,%d) -- (%d,%d);\n", x1, y1, x2, y2);
 209 }
 210
 211 static void tikz_box(plotter_t *_self, const rect_t *rect)
 212 {
 213         decl_self(tikz_plotter_t, _self);
 214
 215         fprintf(self->f, "\t\\draw (%d,%d) rectangle (%d, %d)\n",
 216                 rect->x, rect->y, rect->x + rect->w, rect->y + rect->h);
 217 }
 218
 219 void tikz_text(plotter_t *_self, int x, int y, const char *str)
 220 {
 221         decl_self(tikz_plotter_t, _self);
 222         fprintf(self->f, "\t\\draw (%d,%d) node {%s};\n", x, y, str);
 223 }
 224
 225 static void tikz_finish(plotter_t *_self)
 226 {
 227         decl_self(tikz_plotter_t, _self);
 228         fclose(self->f);
 229 }
 230 #endif /* if 0 */
 231
 232
 233 extern void plotter_free(plotter_t *self)
 234 {
 235         self->vtab->free(self);
 236         free(self);
 237 }
 238
 239 const draw_chordal_opts_t draw_chordal_def_opts = {
 240         10, 10, 30, 8, 10, 10
 241 };
 242
 243 typedef struct _draw_chordal_env_t {
 244         const be_chordal_env_t      *chordal_env;
 245         const arch_env_t            *arch_env;
 246         const arch_register_class_t *cls;
 247         pmap                        *block_dims;
 248         plotter_t                   *plotter;
 249         const draw_chordal_opts_t   *opts;
 250         struct obstack              obst;
 251         int                         max_color;
 252 } draw_chordal_env_t;
 253
 254 struct block_dims {
 255         unsigned max_step;
 256         int      min_step;
 257         int      max_color;
 258         rect_t   box;
 259         rect_t   subtree_box;
 260 };
 261
 262 #define doz(a, b) MAX((a) - (b), 0)
 263
 264 static void block_dims_walker(ir_node *block, void *data)
 265 {
 266         draw_chordal_env_t        *env  = data;
 267         struct list_head          *head = get_block_border_head(env->chordal_env, block);
 268         const draw_chordal_opts_t *opts = env->opts;
 269         struct block_dims         *dims = obstack_alloc(&env->obst, sizeof(*dims));
 270         border_t                  *b;
 271
 272         memset(dims, 0, sizeof(*dims));
 273         dims->min_step = INT_MAX;
 274
 275         list_for_each_entry_reverse(border_t, b, head, list) {
 276                 ir_node               *irn = b->irn;
 277                 const arch_register_t *reg = arch_get_irn_register(env->arch_env, irn);
 278                 int                   col  = arch_register_get_index(reg);
 279
 280                 dims->max_step  = MAX(dims->max_step, b->step);
 281                 dims->max_color = MAX(dims->max_color, col);
 282                 env->max_color  = MAX(env->max_color, col);
 283         }
 284
 285         dims->min_step = 1;
 286
 287 #if 1
 288         dims->box.w = (dims->max_color + 2) * opts->h_inter_gap;
 289         dims->box.h = dims->max_step * opts->v_inter_gap;
 290 #else /* ! if 1 */
 291         dims->box.w = dims->box.h = 10;
 292 #endif /* if 1 */
 293
 294         pmap_insert(env->block_dims, block, dims);
 295 }
 296
 297 static void layout(const draw_chordal_env_t *env, ir_node *bl, int x)
 298 {
 299         const draw_chordal_opts_t *opts   = env->opts;
 300         struct block_dims         *dims   = pmap_get(env->block_dims, bl);
 301         rect_t                    *rect   = &dims->subtree_box;
 302         int                       h_space = 0;
 303         int                       v_space = 0;
 304         ir_node                   *sub;
 305
 306         memset(rect, 0, sizeof(*rect));
 307         rect->x = x;
 308
 309         dominates_for_each(bl, sub) {
 310                 struct block_dims *bl_dim = pmap_get(env->block_dims, sub);
 311
 312                 layout(env, sub, rect->x + rect->w);
 313
 314                 rect->w += h_space + bl_dim->subtree_box.w;
 315                 rect->h  = MAX(rect->h, bl_dim->subtree_box.h);
 316
 317                 h_space = opts->h_gap;
 318                 v_space = opts->v_gap;
 319         }
 320
 321         rect->w = MAX(rect->w, dims->box.w + opts->h_gap);
 322
 323         dims->box.x = x + doz(rect->w, dims->box.w) / 2;
 324         dims->box.y = rect->h + v_space;
 325
 326         rect->h = dims->box.y + dims->box.h;
 327 }
 328
 329 static void set_y(const draw_chordal_env_t *env, ir_node *bl, int up)
 330 {
 331         const draw_chordal_opts_t *opts      = env->opts;
 332         struct block_dims         *dims      = pmap_get(env->block_dims, bl);
 333         int                       max_height = dims->subtree_box.h - dims->box.h - opts->v_gap;
 334         ir_node                   *sub;
 335
 336         dominates_for_each(bl, sub) {
 337                 struct block_dims *bl_dim = pmap_get(env->block_dims, sub);
 338                 int height_diff = max_height - bl_dim->subtree_box.h;
 339
 340                 set_y(env, sub, up + height_diff);
 341         }
 342
 343         dims->subtree_box.y += up;
 344         dims->box.y         += up;
 345 }
 346
 347 static color_t *reg_to_color(const draw_chordal_env_t *env,
 348                                                          ir_node *rel_bl, ir_node *irn, color_t *color)
 349 {
 350         int             phi_arg = 0;
 351         const ir_edge_t *edge;
 352         (void) env;
 353         (void) rel_bl;
 354
 355         foreach_out_edge(irn, edge)
 356                 phi_arg |= is_Phi(edge->src);
 357
 358 #if 1
 359         color->r = is_Phi(irn) ? 0.5 : 0.0;
 360         color->g = phi_arg ? 0.5 : 0.0;
 361         color->b = 0.0;
 362 #else /* ! if 1 */
 363         {
 364                 int live_in  = is_live_in(rel_bl, irn);
 365                 int live_out = is_live_out(rel_bl, irn);
 366
 367                 color->r = live_in;
 368                 color->g = live_out;
 369                 color->b = 0.0;
 370         }
 371 #endif /* if 1 */
 372
 373         return color;
 374 }
 375
 376 static void draw_block(ir_node *bl, void *data)
 377 {
 378         static const color_t      black    = { 0, 0, 0 };
 379         const draw_chordal_env_t  *env     = data;
 380         const be_lv_t             *lv      = be_get_birg_liveness(env->chordal_env->birg);
 381         struct list_head          *head    = get_block_border_head(env->chordal_env, bl);
 382         ir_node                   *dom     = get_Block_idom(bl);
 383         const draw_chordal_opts_t *opts    = env->opts;
 384         struct block_dims         *dims    = pmap_get(env->block_dims, bl);
 385         char                      buf[64];
 386         border_t                  *b;
 387         int                       idx;
 388
 389         ir_snprintf(buf, sizeof(buf), "%F", bl);
 390
 391         env->plotter->vtab->set_color(env->plotter, &black);
 392         env->plotter->vtab->box(env->plotter, &dims->box);
 393
 394 #if 1
 395         env->plotter->vtab->text(env->plotter, dims->box.x, dims->box.y, buf);
 396 #endif
 397
 398         list_for_each_entry(border_t, b, head, list) {
 399                 if (b->is_def) {
 400                         const arch_register_t *reg = arch_get_irn_register(env->arch_env, b->irn);
 401                         int col      = arch_register_get_index(reg);
 402                         int live_out = be_is_live_out(lv, bl, b->irn);
 403                         int x        = (col + 1) * opts->h_inter_gap;
 404                         int ystart   = (b->step) * opts->v_inter_gap;
 405                         int ystop    = (b->other_end->step) * opts->v_inter_gap + (live_out ? 0 : opts->v_inter_gap / 2);
 406
 407                         color_t color;
 408                         reg_to_color(env, bl, b->irn, &color);
 409
 410                         x      += dims->box.x;
 411                         ystart += dims->box.y;
 412                         ystop  += dims->box.y;
 413
 414                         env->plotter->vtab->set_color(env->plotter, &color);
 415                         env->plotter->vtab->line(env->plotter, x, ystart, x, ystop);
 416
 417                         env->plotter->vtab->line(env->plotter, x - 2, ystart, x + 2, ystart);
 418                         env->plotter->vtab->line(env->plotter, x - 2, ystop, x + 2, ystop);
 419                 }
 420         }
 421
 422         if (dom) {
 423                 struct block_dims *dom_dims = pmap_get(env->block_dims, dom);
 424
 425                 be_lv_foreach(lv, bl, be_lv_state_in, idx) {
 426                         ir_node *irn = be_lv_get_irn(lv, bl, idx);
 427                         if (arch_irn_consider_in_reg_alloc(env->arch_env, env->cls, irn)) {
 428                                 const arch_register_t *reg = arch_get_irn_register(env->arch_env, irn);
 429                                 int     col = arch_register_get_index(reg);
 430                                 int     x   = (col + 1) * opts->h_inter_gap;
 431                                 color_t color;
 432
 433                                 reg_to_color(env, bl, irn, &color);
 434
 435                                 env->plotter->vtab->set_color(env->plotter, &color);
 436                                 env->plotter->vtab->line(env->plotter,
 437                                         dims->box.x + x,
 438                                         dims->box.y + dims->box.h,
 439                                         dom_dims->box.x + x,
 440                                         dom_dims->box.y);
 441                         }
 442                 }
 443         }
 444 }
 445
 446 static void draw(draw_chordal_env_t *env, const rect_t *start_box)
 447 {
 448         plotter_t *p = env->plotter;
 449         be_lv_t *lv;
 450         rect_t bbox;
 451
 452         bbox.x = bbox.y = 0;
 453         bbox.w = start_box->w + 2 * env->opts->x_margin;
 454         bbox.h = start_box->h + 2 * env->opts->y_margin;
 455
 456         lv = be_assure_liveness(env->chordal_env->birg);
 457         be_liveness_assure_sets(lv);
 458         be_liveness_assure_chk(lv);
 459
 460         p->vtab->begin(p, &bbox);
 461         irg_block_walk_graph(env->chordal_env->irg, draw_block, NULL, env);
 462         p->vtab->finish(p);
 463 }
 464
 465 void draw_interval_tree(const draw_chordal_opts_t *opts, const be_chordal_env_t *chordal_env, plotter_t *plotter) {
 466         draw_chordal_env_t env;
 467         struct block_dims  *start_dims;
 468         ir_node            *start_block = get_irg_start_block(chordal_env->irg);
 469
 470         env.arch_env    = &chordal_env->birg->main_env->arch_env;
 471         env.opts        = opts;
 472         env.block_dims  = pmap_create();
 473         env.plotter     = plotter;
 474         env.cls         = chordal_env->cls;
 475         env.max_color   = 0;
 476         env.chordal_env = chordal_env;
 477         obstack_init(&env.obst);
 478
 479         irg_block_walk_graph(chordal_env->irg, block_dims_walker, NULL, &env);
 480         layout(&env, start_block, opts->x_margin);
 481         set_y(&env, start_block, opts->y_margin);
 482         start_dims = pmap_get(env.block_dims, start_block);
 483         draw(&env, &start_dims->subtree_box);
 484
 485         pmap_destroy(env.block_dims);
 486         obstack_free(&env.obst, NULL);
 487 }