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  */
  26 #include "config.h"
  27
  28 #include <limits.h>
  29
  30 #include "pmap.h"
  31 #include "pset.h"
  32
  33 #include "irgwalk.h"
  34 #include "irprintf.h"
  35 #include "iredges_t.h"
  36 #include "util.h"
  37
  38 #include "belive_t.h"
  39 #include "bechordal_t.h"
  40 #include "besched.h"
  41 #include "bechordal_draw.h"
  42 #include "beirg.h"
  43
  44 typedef struct {
  45         be_chordal_env_t *env;
  46         plotter_t inh;
  47         const color_t *color;
  48         int width;
  49 } base_plotter_t;
  50
  51 #define decl_self(type, from) \
  52   type *self = (type *) from
  53
  54 static void set_color(plotter_t *_self, const color_t *color)
  55 {
  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 {
  62         decl_self(const base_plotter_t, _self);
  63         return self->color;
  64 }
  65
  66 static void set_width(plotter_t *_self, int width)
  67 {
  68         decl_self(base_plotter_t, _self);
  69         self->width = width;
  70 }
  71
  72 static int get_width(const plotter_t *_self)
  73 {
  74         decl_self(const base_plotter_t, _self);
  75         return self->width;
  76 }
  77
  78 static void plotter_default_free(plotter_t *self)
  79 {
  80         (void) self;
  81 }
  82
  83 typedef struct {
  84         base_plotter_t inh;
  85         const char     *filename;
  86         FILE           *f;
  87 } ps_plotter_t;
  88
  89
  90 /*
  91   ____  ____    ____  _       _   _
  92  |  _ \/ ___|  |  _ \| | ___ | |_| |_ ___ _ __
  93  | |_) \___ \  | |_) | |/ _ \| __| __/ _ \ '__|
  94  |  __/ ___) | |  __/| | (_) | |_| ||  __/ |
  95  |_|   |____/  |_|   |_|\___/ \__|\__\___|_|
  96
  97 */
  98
  99 static void ps_begin(plotter_t *_self, const rect_t *vis)
 100 {
 101         FILE *f;
 102         decl_self(ps_plotter_t, _self);
 103
 104         f = self->f = fopen(self->filename, "wt");
 105         fprintf(f, "%%!PS-Adobe-2.0\n");
 106         fprintf(f, "%%%%BoundingBox: %d %d %d %d\n", vis->x, vis->y, vis->w, vis->h);
 107 #if 0
 108         fprintf(f, "/mainfont /Courier findfont %f scalefont def\n", 10.0);
 109         fprintf(f, "mainfont setfont\n");
 110 #endif /* if 0 */
 111 }
 112
 113 static void ps_setcolor(plotter_t *_self, const color_t *color)
 114 {
 115         decl_self(ps_plotter_t, _self);
 116         set_color(_self, color);
 117
 118         fprintf(self->f, "%.2f %.2f %.2f setrgbcolor\n",
 119                 color->r, color->g, color->b);
 120 }
 121
 122 static void ps_line(plotter_t *_self, int x1, int y1, int x2, int y2)
 123 {
 124         decl_self(ps_plotter_t, _self);
 125
 126         fprintf(self->f, "%d %d moveto\n", x1, y1);
 127         fprintf(self->f, "%d %d lineto\n", x2, y2);
 128         fprintf(self->f, "stroke\n");
 129 }
 130
 131 static void ps_box(plotter_t *_self, const rect_t *rect)
 132 {
 133         decl_self(ps_plotter_t, _self);
 134
 135         fprintf(self->f, "%d %d %d %d rectstroke\n",
 136                 rect->x, rect->y, rect->w, rect->h);
 137 }
 138
 139 static void ps_text(plotter_t *_self, int x, int y, const char *str)
 140 {
 141         decl_self(ps_plotter_t, _self);
 142
 143         fprintf(self->f, "%d %d moveto\n", x, y);
 144         fprintf(self->f, "(%s) show\n", str);
 145 }
 146
 147 static void ps_finish(plotter_t *_self)
 148 {
 149         decl_self(ps_plotter_t, _self);
 150         fclose(self->f);
 151 }
 152
 153 static const plotter_if_t ps_plotter_vtab = {
 154         ps_begin,
 155         ps_setcolor,
 156         get_color,
 157         set_width,
 158         get_width,
 159         ps_line,
 160         ps_box,
 161         ps_text,
 162         ps_finish,
 163         plotter_default_free
 164 };
 165
 166 plotter_t *new_plotter_ps(const char *filename)
 167 {
 168         ps_plotter_t *ps_plotter = XMALLOC(ps_plotter_t);
 169         plotter_t *p = (plotter_t *) ps_plotter;
 170
 171         ps_plotter->filename = filename;
 172         p->vtab = &ps_plotter_vtab;
 173         return p;
 174 }
 175
 176 extern void plotter_free(plotter_t *self)
 177 {
 178         self->vtab->free(self);
 179         free(self);
 180 }
 181
 182 const draw_chordal_opts_t draw_chordal_def_opts = {
 183         10, 10, 30, 8, 10, 10
 184 };
 185
 186 typedef struct draw_chordal_env_t {
 187         const be_chordal_env_t      *chordal_env;
 188         const arch_register_class_t *cls;
 189         pmap                        *block_dims;
 190         plotter_t                   *plotter;
 191         const draw_chordal_opts_t   *opts;
 192         struct obstack              obst;
 193         int                         max_color;
 194 } draw_chordal_env_t;
 195
 196 struct block_dims {
 197         unsigned max_step;
 198         int      min_step;
 199         int      max_color;
 200         rect_t   box;
 201         rect_t   subtree_box;
 202 };
 203
 204 #define doz(a, b) MAX((a) - (b), 0)
 205
 206 static void block_dims_walker(ir_node *block, void *data)
 207 {
 208         draw_chordal_env_t        *env  = (draw_chordal_env_t*)data;
 209         struct list_head          *head = get_block_border_head(env->chordal_env, block);
 210         const draw_chordal_opts_t *opts = env->opts;
 211         struct block_dims         *dims = OALLOCZ(&env->obst, struct block_dims);
 212
 213         dims->min_step = INT_MAX;
 214
 215         foreach_border_head(head, b) {
 216                 ir_node               *irn = b->irn;
 217                 const arch_register_t *reg = arch_get_irn_register(irn);
 218                 int                    col = reg->index;
 219
 220                 dims->max_step  = MAX(dims->max_step, b->step);
 221                 dims->max_color = MAX(dims->max_color, col);
 222                 env->max_color  = MAX(env->max_color, col);
 223         }
 224
 225         dims->min_step = 1;
 226
 227 #if 1
 228         dims->box.w = (dims->max_color + 2) * opts->h_inter_gap;
 229         dims->box.h = dims->max_step * opts->v_inter_gap;
 230 #else /* ! if 1 */
 231         dims->box.w = dims->box.h = 10;
 232 #endif /* if 1 */
 233
 234         pmap_insert(env->block_dims, block, dims);
 235 }
 236
 237 static void layout(const draw_chordal_env_t *env, ir_node *bl, int x)
 238 {
 239         const draw_chordal_opts_t *opts   = env->opts;
 240         struct block_dims         *dims   = pmap_get(struct block_dims, env->block_dims, bl);
 241         rect_t                    *rect   = &dims->subtree_box;
 242         int                       h_space = 0;
 243         int                       v_space = 0;
 244         ir_node                   *sub;
 245
 246         memset(rect, 0, sizeof(*rect));
 247         rect->x = x;
 248
 249         dominates_for_each(bl, sub) {
 250                 struct block_dims *bl_dim = pmap_get(struct block_dims, env->block_dims, sub);
 251
 252                 layout(env, sub, rect->x + rect->w);
 253
 254                 rect->w += h_space + bl_dim->subtree_box.w;
 255                 rect->h  = MAX(rect->h, bl_dim->subtree_box.h);
 256
 257                 h_space = opts->h_gap;
 258                 v_space = opts->v_gap;
 259         }
 260
 261         rect->w = MAX(rect->w, dims->box.w + opts->h_gap);
 262
 263         dims->box.x = x + doz(rect->w, dims->box.w) / 2;
 264         dims->box.y = rect->h + v_space;
 265
 266         rect->h = dims->box.y + dims->box.h;
 267 }
 268
 269 static void set_y(const draw_chordal_env_t *env, ir_node *bl, int up)
 270 {
 271         const draw_chordal_opts_t *opts      = env->opts;
 272         struct block_dims         *dims      = pmap_get(struct block_dims, env->block_dims, bl);
 273         int                       max_height = dims->subtree_box.h - dims->box.h - opts->v_gap;
 274         ir_node                   *sub;
 275
 276         dominates_for_each(bl, sub) {
 277                 struct block_dims *bl_dim = pmap_get(struct block_dims, env->block_dims, sub);
 278                 int height_diff = max_height - bl_dim->subtree_box.h;
 279
 280                 set_y(env, sub, up + height_diff);
 281         }
 282
 283         dims->subtree_box.y += up;
 284         dims->box.y         += up;
 285 }
 286
 287 static color_t *reg_to_color(const draw_chordal_env_t *env,
 288                                                          ir_node *rel_bl, ir_node *irn, color_t *color)
 289 {
 290         int phi_arg = 0;
 291         (void) env;
 292         (void) rel_bl;
 293
 294         foreach_out_edge(irn, edge)
 295                 phi_arg |= is_Phi(edge->src);
 296
 297 #if 1
 298         color->r = is_Phi(irn) ? 0.5 : 0.0;
 299         color->g = phi_arg ? 0.5 : 0.0;
 300         color->b = 0.0;
 301 #else /* ! if 1 */
 302         {
 303                 int live_in  = is_live_in(rel_bl, irn);
 304                 int live_out = is_live_out(rel_bl, irn);
 305
 306                 color->r = live_in;
 307                 color->g = live_out;
 308                 color->b = 0.0;
 309         }
 310 #endif /* if 1 */
 311
 312         return color;
 313 }
 314
 315 static void draw_block(ir_node *bl, void *data)
 316 {
 317         static const color_t      black    = { 0, 0, 0 };
 318         const draw_chordal_env_t  *env     = (const draw_chordal_env_t*)data;
 319         const be_lv_t             *lv      = be_get_irg_liveness(env->chordal_env->irg);
 320         struct list_head          *head    = get_block_border_head(env->chordal_env, bl);
 321         ir_node                   *dom     = get_Block_idom(bl);
 322         const draw_chordal_opts_t *opts    = env->opts;
 323         struct block_dims         *dims    = pmap_get(struct block_dims, env->block_dims, bl);
 324         char                      buf[64];
 325
 326         ir_snprintf(buf, sizeof(buf), "%F", bl);
 327
 328         env->plotter->vtab->set_color(env->plotter, &black);
 329         env->plotter->vtab->box(env->plotter, &dims->box);
 330
 331 #if 1
 332         env->plotter->vtab->text(env->plotter, dims->box.x, dims->box.y, buf);
 333 #endif
 334
 335         foreach_border_head(head, b) {
 336                 if (b->is_def) {
 337                         const arch_register_t *reg = arch_get_irn_register(b->irn);
 338                         int live_out = be_is_live_out(lv, bl, b->irn);
 339                         int x        = (reg->index + 1) * opts->h_inter_gap;
 340                         int ystart   = (b->step) * opts->v_inter_gap;
 341                         int ystop    = (b->other_end->step) * opts->v_inter_gap + (live_out ? 0 : opts->v_inter_gap / 2);
 342
 343                         color_t color;
 344                         reg_to_color(env, bl, b->irn, &color);
 345
 346                         x      += dims->box.x;
 347                         ystart += dims->box.y;
 348                         ystop  += dims->box.y;
 349
 350                         env->plotter->vtab->set_color(env->plotter, &color);
 351                         env->plotter->vtab->line(env->plotter, x, ystart, x, ystop);
 352
 353                         env->plotter->vtab->line(env->plotter, x - 2, ystart, x + 2, ystart);
 354                         env->plotter->vtab->line(env->plotter, x - 2, ystop, x + 2, ystop);
 355                 }
 356         }
 357
 358         if (dom) {
 359                 struct block_dims *dom_dims = pmap_get(struct block_dims, env->block_dims, dom);
 360
 361                 be_lv_foreach(lv, bl, be_lv_state_in, irn) {
 362                         if (arch_irn_consider_in_reg_alloc(env->cls, irn)) {
 363                                 const arch_register_t *reg = arch_get_irn_register(irn);
 364                                 int                    x   = (reg->index + 1) * opts->h_inter_gap;
 365                                 color_t                color;
 366
 367                                 reg_to_color(env, bl, irn, &color);
 368
 369                                 env->plotter->vtab->set_color(env->plotter, &color);
 370                                 env->plotter->vtab->line(env->plotter,
 371                                         dims->box.x + x,
 372                                         dims->box.y + dims->box.h,
 373                                         dom_dims->box.x + x,
 374                                         dom_dims->box.y);
 375                         }
 376                 }
 377         }
 378 }
 379
 380 static void draw(draw_chordal_env_t *env, const rect_t *start_box)
 381 {
 382         ir_graph  *irg = env->chordal_env->irg;
 383         plotter_t *p = env->plotter;
 384         rect_t bbox;
 385
 386         bbox.x = bbox.y = 0;
 387         bbox.w = start_box->w + 2 * env->opts->x_margin;
 388         bbox.h = start_box->h + 2 * env->opts->y_margin;
 389
 390         be_assure_live_sets(irg);
 391         be_assure_live_chk(irg);
 392
 393         p->vtab->begin(p, &bbox);
 394         irg_block_walk_graph(env->chordal_env->irg, draw_block, NULL, env);
 395         p->vtab->finish(p);
 396 }
 397
 398 void draw_interval_tree(const draw_chordal_opts_t *opts,
 399                         const be_chordal_env_t *chordal_env, plotter_t *plotter)
 400 {
 401         draw_chordal_env_t env;
 402         struct block_dims  *start_dims;
 403         ir_node            *start_block = get_irg_start_block(chordal_env->irg);
 404
 405         env.opts        = opts;
 406         env.block_dims  = pmap_create();
 407         env.plotter     = plotter;
 408         env.cls         = chordal_env->cls;
 409         env.max_color   = 0;
 410         env.chordal_env = chordal_env;
 411         obstack_init(&env.obst);
 412
 413         irg_block_walk_graph(chordal_env->irg, block_dims_walker, NULL, &env);
 414         layout(&env, start_block, opts->x_margin);
 415         set_y(&env, start_block, opts->y_margin);
 416         start_dims = pmap_get(struct block_dims, env.block_dims, start_block);
 417         draw(&env, &start_dims->subtree_box);
 418
 419         pmap_destroy(env.block_dims);
 420         obstack_free(&env.obst, NULL);
 421 }