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 "bearch.h"
  39 #include "belive_t.h"
  40 #include "bechordal_t.h"
  41 #include "besched.h"
  42 #include "bechordal_draw.h"
  43 #include "beirg.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 {
  57         decl_self(base_plotter_t, _self);
  58         self->color = color;
  59 }
  60
  61 static const color_t *get_color(const plotter_t *_self)
  62 {
  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 {
  69         decl_self(base_plotter_t, _self);
  70         self->width = width;
  71 }
  72
  73 static int get_width(const plotter_t *_self)
  74 {
  75         decl_self(const base_plotter_t, _self);
  76         return self->width;
  77 }
  78
  79 static void plotter_default_free(plotter_t *self)
  80 {
  81         (void) self;
  82 }
  83
  84 typedef struct {
  85         base_plotter_t inh;
  86         const char     *filename;
  87         FILE           *f;
  88 } ps_plotter_t;
  89
  90
  91 /*
  92   ____  ____    ____  _       _   _
  93  |  _ \/ ___|  |  _ \| | ___ | |_| |_ ___ _ __
  94  | |_) \___ \  | |_) | |/ _ \| __| __/ _ \ '__|
  95  |  __/ ___) | |  __/| | (_) | |_| ||  __/ |
  96  |_|   |____/  |_|   |_|\___/ \__|\__\___|_|
  97
  98 */
  99
 100 static void ps_begin(plotter_t *_self, const rect_t *vis)
 101 {
 102         FILE *f;
 103         decl_self(ps_plotter_t, _self);
 104
 105         f = self->f = fopen(self->filename, "wt");
 106         fprintf(f, "%%!PS-Adobe-2.0\n");
 107         fprintf(f, "%%%%BoundingBox: %d %d %d %d\n", vis->x, vis->y, vis->w, vis->h);
 108 }
 109
 110 static void ps_setcolor(plotter_t *_self, const color_t *color)
 111 {
 112         decl_self(ps_plotter_t, _self);
 113         set_color(_self, color);
 114
 115         fprintf(self->f, "%.2f %.2f %.2f setrgbcolor\n",
 116                 color->r, color->g, color->b);
 117 }
 118
 119 static void ps_line(plotter_t *_self, int x1, int y1, int x2, int y2)
 120 {
 121         decl_self(ps_plotter_t, _self);
 122
 123         fprintf(self->f, "%d %d moveto\n", x1, y1);
 124         fprintf(self->f, "%d %d lineto\n", x2, y2);
 125         fprintf(self->f, "stroke\n");
 126 }
 127
 128 static void ps_box(plotter_t *_self, const rect_t *rect)
 129 {
 130         decl_self(ps_plotter_t, _self);
 131
 132         fprintf(self->f, "%d %d %d %d rectstroke\n",
 133                 rect->x, rect->y, rect->w, rect->h);
 134 }
 135
 136 static void ps_text(plotter_t *_self, int x, int y, const char *str)
 137 {
 138         decl_self(ps_plotter_t, _self);
 139
 140         fprintf(self->f, "%d %d moveto\n", x, y);
 141         fprintf(self->f, "(%s) show\n", str);
 142 }
 143
 144 static void ps_finish(plotter_t *_self)
 145 {
 146         decl_self(ps_plotter_t, _self);
 147         fclose(self->f);
 148 }
 149
 150 static const plotter_if_t ps_plotter_vtab = {
 151         ps_begin,
 152         ps_setcolor,
 153         get_color,
 154         set_width,
 155         get_width,
 156         ps_line,
 157         ps_box,
 158         ps_text,
 159         ps_finish,
 160         plotter_default_free
 161 };
 162
 163 plotter_t *new_plotter_ps(const char *filename)
 164 {
 165         ps_plotter_t *ps_plotter = XMALLOC(ps_plotter_t);
 166         plotter_t *p = (plotter_t *) ps_plotter;
 167
 168         ps_plotter->filename = filename;
 169         p->vtab = &ps_plotter_vtab;
 170         return p;
 171 }
 172
 173 extern void plotter_free(plotter_t *self)
 174 {
 175         self->vtab->free(self);
 176         free(self);
 177 }
 178
 179 const draw_chordal_opts_t draw_chordal_def_opts = {
 180         10, 10, 30, 8, 10, 10
 181 };
 182
 183 typedef struct draw_chordal_env_t {
 184         const be_chordal_env_t      *chordal_env;
 185         const arch_register_class_t *cls;
 186         pmap                        *block_dims;
 187         plotter_t                   *plotter;
 188         const draw_chordal_opts_t   *opts;
 189         struct obstack              obst;
 190         int                         max_color;
 191 } draw_chordal_env_t;
 192
 193 struct block_dims {
 194         unsigned max_step;
 195         int      min_step;
 196         int      max_color;
 197         rect_t   box;
 198         rect_t   subtree_box;
 199 };
 200
 201 #define doz(a, b) MAX((a) - (b), 0)
 202
 203 static void block_dims_walker(ir_node *block, void *data)
 204 {
 205         draw_chordal_env_t        *env  = (draw_chordal_env_t*)data;
 206         struct list_head          *head = get_block_border_head(env->chordal_env, block);
 207         const draw_chordal_opts_t *opts = env->opts;
 208         struct block_dims         *dims = OALLOCZ(&env->obst, struct block_dims);
 209
 210         dims->min_step = INT_MAX;
 211
 212         foreach_border_head(head, b) {
 213                 ir_node               *irn = b->irn;
 214                 const arch_register_t *reg = arch_get_irn_register(irn);
 215                 int                    col = reg->index;
 216
 217                 dims->max_step  = MAX(dims->max_step, b->step);
 218                 dims->max_color = MAX(dims->max_color, col);
 219                 env->max_color  = MAX(env->max_color, col);
 220         }
 221
 222         dims->min_step = 1;
 223
 224         dims->box.w = (dims->max_color + 2) * opts->h_inter_gap;
 225         dims->box.h = dims->max_step * opts->v_inter_gap;
 226
 227         pmap_insert(env->block_dims, block, dims);
 228 }
 229
 230 static void layout(const draw_chordal_env_t *env, ir_node *bl, int x)
 231 {
 232         const draw_chordal_opts_t *opts   = env->opts;
 233         struct block_dims         *dims   = pmap_get(struct block_dims, env->block_dims, bl);
 234         rect_t                    *rect   = &dims->subtree_box;
 235         int                       h_space = 0;
 236         int                       v_space = 0;
 237         ir_node                   *sub;
 238
 239         memset(rect, 0, sizeof(*rect));
 240         rect->x = x;
 241
 242         dominates_for_each(bl, sub) {
 243                 struct block_dims *bl_dim = pmap_get(struct block_dims, env->block_dims, sub);
 244
 245                 layout(env, sub, rect->x + rect->w);
 246
 247                 rect->w += h_space + bl_dim->subtree_box.w;
 248                 rect->h  = MAX(rect->h, bl_dim->subtree_box.h);
 249
 250                 h_space = opts->h_gap;
 251                 v_space = opts->v_gap;
 252         }
 253
 254         rect->w = MAX(rect->w, dims->box.w + opts->h_gap);
 255
 256         dims->box.x = x + doz(rect->w, dims->box.w) / 2;
 257         dims->box.y = rect->h + v_space;
 258
 259         rect->h = dims->box.y + dims->box.h;
 260 }
 261
 262 static void set_y(const draw_chordal_env_t *env, ir_node *bl, int up)
 263 {
 264         const draw_chordal_opts_t *opts      = env->opts;
 265         struct block_dims         *dims      = pmap_get(struct block_dims, env->block_dims, bl);
 266         int                       max_height = dims->subtree_box.h - dims->box.h - opts->v_gap;
 267         ir_node                   *sub;
 268
 269         dominates_for_each(bl, sub) {
 270                 struct block_dims *bl_dim = pmap_get(struct block_dims, env->block_dims, sub);
 271                 int height_diff = max_height - bl_dim->subtree_box.h;
 272
 273                 set_y(env, sub, up + height_diff);
 274         }
 275
 276         dims->subtree_box.y += up;
 277         dims->box.y         += up;
 278 }
 279
 280 static color_t *reg_to_color(const draw_chordal_env_t *env,
 281                                                          ir_node *rel_bl, ir_node *irn, color_t *color)
 282 {
 283         int phi_arg = 0;
 284         (void) env;
 285         (void) rel_bl;
 286
 287         foreach_out_edge(irn, edge)
 288                 phi_arg |= is_Phi(edge->src);
 289
 290         color->r = is_Phi(irn) ? 0.5 : 0.0;
 291         color->g = phi_arg ? 0.5 : 0.0;
 292         color->b = 0.0;
 293         return color;
 294 }
 295
 296 static void draw_block(ir_node *bl, void *data)
 297 {
 298         static const color_t      black    = { 0, 0, 0 };
 299         const draw_chordal_env_t  *env     = (const draw_chordal_env_t*)data;
 300         const be_lv_t             *lv      = be_get_irg_liveness(env->chordal_env->irg);
 301         struct list_head          *head    = get_block_border_head(env->chordal_env, bl);
 302         ir_node                   *dom     = get_Block_idom(bl);
 303         const draw_chordal_opts_t *opts    = env->opts;
 304         struct block_dims         *dims    = pmap_get(struct block_dims, env->block_dims, bl);
 305         char                      buf[64];
 306
 307         ir_snprintf(buf, sizeof(buf), "%F", bl);
 308
 309         env->plotter->vtab->set_color(env->plotter, &black);
 310         env->plotter->vtab->box(env->plotter, &dims->box);
 311
 312         env->plotter->vtab->text(env->plotter, dims->box.x, dims->box.y, buf);
 313
 314         foreach_border_head(head, b) {
 315                 if (b->is_def) {
 316                         const arch_register_t *reg = arch_get_irn_register(b->irn);
 317                         int live_out = be_is_live_out(lv, bl, b->irn);
 318                         int x        = (reg->index + 1) * opts->h_inter_gap;
 319                         int ystart   = (b->step) * opts->v_inter_gap;
 320                         int ystop    = (b->other_end->step) * opts->v_inter_gap + (live_out ? 0 : opts->v_inter_gap / 2);
 321
 322                         color_t color;
 323                         reg_to_color(env, bl, b->irn, &color);
 324
 325                         x      += dims->box.x;
 326                         ystart += dims->box.y;
 327                         ystop  += dims->box.y;
 328
 329                         env->plotter->vtab->set_color(env->plotter, &color);
 330                         env->plotter->vtab->line(env->plotter, x, ystart, x, ystop);
 331
 332                         env->plotter->vtab->line(env->plotter, x - 2, ystart, x + 2, ystart);
 333                         env->plotter->vtab->line(env->plotter, x - 2, ystop, x + 2, ystop);
 334                 }
 335         }
 336
 337         if (dom) {
 338                 struct block_dims *dom_dims = pmap_get(struct block_dims, env->block_dims, dom);
 339
 340                 be_lv_foreach_cls(lv, bl, be_lv_state_in, env->cls, irn) {
 341                         const arch_register_t *reg = arch_get_irn_register(irn);
 342                         int                    x   = (reg->index + 1) * opts->h_inter_gap;
 343                         color_t                color;
 344
 345                         reg_to_color(env, bl, irn, &color);
 346
 347                         env->plotter->vtab->set_color(env->plotter, &color);
 348                         env->plotter->vtab->line(env->plotter,
 349                                 dims->box.x + x,
 350                                 dims->box.y + dims->box.h,
 351                                 dom_dims->box.x + x,
 352                                 dom_dims->box.y);
 353                 }
 354         }
 355 }
 356
 357 static void draw(draw_chordal_env_t *env, const rect_t *start_box)
 358 {
 359         ir_graph  *irg = env->chordal_env->irg;
 360         plotter_t *p = env->plotter;
 361         rect_t bbox;
 362
 363         bbox.x = bbox.y = 0;
 364         bbox.w = start_box->w + 2 * env->opts->x_margin;
 365         bbox.h = start_box->h + 2 * env->opts->y_margin;
 366
 367         be_assure_live_sets(irg);
 368         be_assure_live_chk(irg);
 369
 370         p->vtab->begin(p, &bbox);
 371         irg_block_walk_graph(env->chordal_env->irg, draw_block, NULL, env);
 372         p->vtab->finish(p);
 373 }
 374
 375 void draw_interval_tree(const draw_chordal_opts_t *opts,
 376                         const be_chordal_env_t *chordal_env, plotter_t *plotter)
 377 {
 378         draw_chordal_env_t env;
 379         struct block_dims  *start_dims;
 380         ir_node            *start_block = get_irg_start_block(chordal_env->irg);
 381
 382         env.opts        = opts;
 383         env.block_dims  = pmap_create();
 384         env.plotter     = plotter;
 385         env.cls         = chordal_env->cls;
 386         env.max_color   = 0;
 387         env.chordal_env = chordal_env;
 388         obstack_init(&env.obst);
 389
 390         irg_block_walk_graph(chordal_env->irg, block_dims_walker, NULL, &env);
 391         layout(&env, start_block, opts->x_margin);
 392         set_y(&env, start_block, opts->y_margin);
 393         start_dims = pmap_get(struct block_dims, env.block_dims, start_block);
 394         draw(&env, &start_dims->subtree_box);
 395
 396         pmap_destroy(env.block_dims);
 397         obstack_free(&env.obst, NULL);
 398 }