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