src/compiler/glsl/ir_print_visitor.cpp

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include <inttypes.h> /* for PRIx64 macro */
  25 #include "ir_print_visitor.h"
  26 #include "compiler/glsl_types.h"
  27 #include "glsl_parser_extras.h"
  28 #include "main/macros.h"
  29 #include "util/hash_table.h"
  30
  31 static void print_type(FILE *f, const glsl_type *t);
  32
  33 void
  34 ir_instruction::print(void) const
  35 {
  36    this->fprint(stdout);
  37 }
  38
  39 void
  40 ir_instruction::fprint(FILE *f) const
  41 {
  42    ir_instruction *deconsted = const_cast<ir_instruction *>(this);
  43
  44    ir_print_visitor v(f);
  45    deconsted->accept(&v);
  46 }
  47
  48 extern "C" {
  49 void
  50 _mesa_print_ir(FILE *f, exec_list *instructions,
  51                struct _mesa_glsl_parse_state *state)
  52 {
  53    if (state) {
  54       for (unsigned i = 0; i < state->num_user_structures; i++) {
  55          const glsl_type *const s = state->user_structures[i];
  56
  57          fprintf(f, "(structure (%s) (%s@%p) (%u) (\n",
  58                  s->name, s->name, (void *) s, s->length);
  59
  60          for (unsigned j = 0; j < s->length; j++) {
  61             fprintf(f, "\t((");
  62             print_type(f, s->fields.structure[j].type);
  63             fprintf(f, ")(%s))\n", s->fields.structure[j].name);
  64          }
  65
  66          fprintf(f, ")\n");
  67       }
  68    }
  69
  70    fprintf(f, "(\n");
  71    foreach_in_list(ir_instruction, ir, instructions) {
  72       ir->fprint(f);
  73       if (ir->ir_type != ir_type_function)
  74          fprintf(f, "\n");
  75    }
  76    fprintf(f, ")\n");
  77 }
  78
  79 void
  80 fprint_ir(FILE *f, const void *instruction)
  81 {
  82    const ir_instruction *ir = (const ir_instruction *)instruction;
  83    ir->fprint(f);
  84 }
  85
  86 } /* extern "C" */
  87
  88 ir_print_visitor::ir_print_visitor(FILE *f)
  89    : f(f)
  90 {
  91    indentation = 0;
  92    printable_names =
  93       _mesa_hash_table_create(NULL, _mesa_hash_pointer, _mesa_key_pointer_equal);
  94    symbols = _mesa_symbol_table_ctor();
  95    mem_ctx = ralloc_context(NULL);
  96 }
  97
  98 ir_print_visitor::~ir_print_visitor()
  99 {
 100    _mesa_hash_table_destroy(printable_names, NULL);
 101    _mesa_symbol_table_dtor(symbols);
 102    ralloc_free(mem_ctx);
 103 }
 104
 105 void ir_print_visitor::indent(void)
 106 {
 107    for (int i = 0; i < indentation; i++)
 108       fprintf(f, "  ");
 109 }
 110
 111 const char *
 112 ir_print_visitor::unique_name(ir_variable *var)
 113 {
 114    /* var->name can be NULL in function prototypes when a type is given for a
 115     * parameter but no name is given.  In that case, just return an empty
 116     * string.  Don't worry about tracking the generated name in the printable
 117     * names hash because this is the only scope where it can ever appear.
 118     */
 119    if (var->name == NULL) {
 120       static unsigned arg = 1;
 121       return ralloc_asprintf(this->mem_ctx, "parameter@%u", arg++);
 122    }
 123
 124    /* Do we already have a name for this variable? */
 125    struct hash_entry * entry =
 126       _mesa_hash_table_search(this->printable_names, var);
 127
 128    if (entry != NULL) {
 129       return (const char *) entry->data;
 130    }
 131
 132    /* If there's no conflict, just use the original name */
 133    const char* name = NULL;
 134    if (_mesa_symbol_table_find_symbol(this->symbols, var->name) == NULL) {
 135       name = var->name;
 136    } else {
 137       static unsigned i = 1;
 138       name = ralloc_asprintf(this->mem_ctx, "%s@%u", var->name, ++i);
 139    }
 140    _mesa_hash_table_insert(this->printable_names, var, (void *) name);
 141    _mesa_symbol_table_add_symbol(this->symbols, name, var);
 142    return name;
 143 }
 144
 145 static void
 146 print_type(FILE *f, const glsl_type *t)
 147 {
 148    if (t->is_array()) {
 149       fprintf(f, "(array ");
 150       print_type(f, t->fields.array);
 151       fprintf(f, " %u)", t->length);
 152    } else if (t->is_record() && !is_gl_identifier(t->name)) {
 153       fprintf(f, "%s@%p", t->name, (void *) t);
 154    } else {
 155       fprintf(f, "%s", t->name);
 156    }
 157 }
 158
 159 void ir_print_visitor::visit(ir_rvalue *)
 160 {
 161    fprintf(f, "error");
 162 }
 163
 164 void ir_print_visitor::visit(ir_variable *ir)
 165 {
 166    fprintf(f, "(declare ");
 167
 168    char binding[32] = {0};
 169    if (ir->data.binding)
 170       snprintf(binding, sizeof(binding), "binding=%i ", ir->data.binding);
 171
 172    char loc[32] = {0};
 173    if (ir->data.location != -1)
 174       snprintf(loc, sizeof(loc), "location=%i ", ir->data.location);
 175
 176    char component[32] = {0};
 177    if (ir->data.explicit_component)
 178       snprintf(component, sizeof(component), "component=%i ", ir->data.location_frac);
 179
 180    char stream[32] = {0};
 181    if (ir->data.stream & (1u << 31)) {
 182       if (ir->data.stream & ~(1u << 31)) {
 183          snprintf(stream, sizeof(stream), "stream(%u,%u,%u,%u) ",
 184                   ir->data.stream & 3, (ir->data.stream >> 2) & 3,
 185                   (ir->data.stream >> 4) & 3, (ir->data.stream >> 6) & 3);
 186       }
 187    } else if (ir->data.stream) {
 188       snprintf(stream, sizeof(stream), "stream%u ", ir->data.stream);
 189    }
 190
 191    char image_format[32] = {0};
 192    if (ir->data.image_format) {
 193       snprintf(image_format, sizeof(image_format), "format=%x ",
 194                ir->data.image_format);
 195    }
 196
 197    const char *const cent = (ir->data.centroid) ? "centroid " : "";
 198    const char *const samp = (ir->data.sample) ? "sample " : "";
 199    const char *const patc = (ir->data.patch) ? "patch " : "";
 200    const char *const inv = (ir->data.invariant) ? "invariant " : "";
 201    const char *const prec = (ir->data.precise) ? "precise " : "";
 202    const char *const bindless = (ir->data.bindless) ? "bindless " : "";
 203    const char *const bound = (ir->data.bound) ? "bound " : "";
 204    const char *const memory_read_only = (ir->data.memory_read_only) ? "readonly " : "";
 205    const char *const memory_write_only = (ir->data.memory_write_only) ? "writeonly " : "";
 206    const char *const memory_coherent = (ir->data.memory_coherent) ? "coherent " : "";
 207    const char *const memory_volatile = (ir->data.memory_volatile) ? "volatile " : "";
 208    const char *const memory_restrict = (ir->data.memory_restrict) ? "restrict " : "";
 209    const char *const mode[] = { "", "uniform ", "shader_storage ",
 210                                 "shader_shared ", "shader_in ", "shader_out ",
 211                                 "in ", "out ", "inout ",
 212                                 "const_in ", "sys ", "temporary " };
 213    STATIC_ASSERT(ARRAY_SIZE(mode) == ir_var_mode_count);
 214    const char *const interp[] = { "", "smooth", "flat", "noperspective" };
 215    STATIC_ASSERT(ARRAY_SIZE(interp) == INTERP_MODE_COUNT);
 216
 217    fprintf(f, "(%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s) ",
 218            binding, loc, component, cent, bindless, bound,
 219            image_format, memory_read_only, memory_write_only,
 220            memory_coherent, memory_volatile, memory_restrict,
 221            samp, patc, inv, prec, mode[ir->data.mode],
 222            stream,
 223            interp[ir->data.interpolation]);
 224
 225    print_type(f, ir->type);
 226    fprintf(f, " %s)", unique_name(ir));
 227 }
 228
 229
 230 void ir_print_visitor::visit(ir_function_signature *ir)
 231 {
 232    _mesa_symbol_table_push_scope(symbols);
 233    fprintf(f, "(signature ");
 234    indentation++;
 235
 236    print_type(f, ir->return_type);
 237    fprintf(f, "\n");
 238    indent();
 239
 240    fprintf(f, "(parameters\n");
 241    indentation++;
 242
 243    foreach_in_list(ir_variable, inst, &ir->parameters) {
 244       indent();
 245       inst->accept(this);
 246       fprintf(f, "\n");
 247    }
 248    indentation--;
 249
 250    indent();
 251    fprintf(f, ")\n");
 252
 253    indent();
 254
 255    fprintf(f, "(\n");
 256    indentation++;
 257
 258    foreach_in_list(ir_instruction, inst, &ir->body) {
 259       indent();
 260       inst->accept(this);
 261       fprintf(f, "\n");
 262    }
 263    indentation--;
 264    indent();
 265    fprintf(f, "))\n");
 266    indentation--;
 267    _mesa_symbol_table_pop_scope(symbols);
 268 }
 269
 270
 271 void ir_print_visitor::visit(ir_function *ir)
 272 {
 273    fprintf(f, "(%s function %s\n", ir->is_subroutine ? "subroutine" : "", ir->name);
 274    indentation++;
 275    foreach_in_list(ir_function_signature, sig, &ir->signatures) {
 276       indent();
 277       sig->accept(this);
 278       fprintf(f, "\n");
 279    }
 280    indentation--;
 281    indent();
 282    fprintf(f, ")\n\n");
 283 }
 284
 285
 286 void ir_print_visitor::visit(ir_expression *ir)
 287 {
 288    fprintf(f, "(expression ");
 289
 290    print_type(f, ir->type);
 291
 292    fprintf(f, " %s ", ir_expression_operation_strings[ir->operation]);
 293
 294    for (unsigned i = 0; i < ir->get_num_operands(); i++) {
 295       ir->operands[i]->accept(this);
 296    }
 297
 298    fprintf(f, ") ");
 299 }
 300
 301
 302 void ir_print_visitor::visit(ir_texture *ir)
 303 {
 304    fprintf(f, "(%s ", ir->opcode_string());
 305
 306    if (ir->op == ir_samples_identical) {
 307       ir->sampler->accept(this);
 308       fprintf(f, " ");
 309       ir->coordinate->accept(this);
 310       fprintf(f, ")");
 311       return;
 312    }
 313
 314    print_type(f, ir->type);
 315    fprintf(f, " ");
 316
 317    ir->sampler->accept(this);
 318    fprintf(f, " ");
 319
 320    if (ir->op != ir_txs && ir->op != ir_query_levels &&
 321        ir->op != ir_texture_samples) {
 322       ir->coordinate->accept(this);
 323
 324       fprintf(f, " ");
 325
 326       if (ir->offset != NULL) {
 327          ir->offset->accept(this);
 328       } else {
 329          fprintf(f, "0");
 330       }
 331
 332       fprintf(f, " ");
 333    }
 334
 335    if (ir->op != ir_txf && ir->op != ir_txf_ms &&
 336        ir->op != ir_txs && ir->op != ir_tg4 &&
 337        ir->op != ir_query_levels && ir->op != ir_texture_samples) {
 338       if (ir->projector)
 339          ir->projector->accept(this);
 340       else
 341          fprintf(f, "1");
 342
 343       if (ir->shadow_comparator) {
 344          fprintf(f, " ");
 345          ir->shadow_comparator->accept(this);
 346       } else {
 347          fprintf(f, " ()");
 348       }
 349    }
 350
 351    fprintf(f, " ");
 352    switch (ir->op)
 353    {
 354    case ir_tex:
 355    case ir_lod:
 356    case ir_query_levels:
 357    case ir_texture_samples:
 358       break;
 359    case ir_txb:
 360       ir->lod_info.bias->accept(this);
 361       break;
 362    case ir_txl:
 363    case ir_txf:
 364    case ir_txs:
 365       ir->lod_info.lod->accept(this);
 366       break;
 367    case ir_txf_ms:
 368       ir->lod_info.sample_index->accept(this);
 369       break;
 370    case ir_txd:
 371       fprintf(f, "(");
 372       ir->lod_info.grad.dPdx->accept(this);
 373       fprintf(f, " ");
 374       ir->lod_info.grad.dPdy->accept(this);
 375       fprintf(f, ")");
 376       break;
 377    case ir_tg4:
 378       ir->lod_info.component->accept(this);
 379       break;
 380    case ir_samples_identical:
 381       unreachable("ir_samples_identical was already handled");
 382    };
 383    fprintf(f, ")");
 384 }
 385
 386
 387 void ir_print_visitor::visit(ir_swizzle *ir)
 388 {
 389    const unsigned swiz[4] = {
 390       ir->mask.x,
 391       ir->mask.y,
 392       ir->mask.z,
 393       ir->mask.w,
 394    };
 395
 396    fprintf(f, "(swiz ");
 397    for (unsigned i = 0; i < ir->mask.num_components; i++) {
 398       fprintf(f, "%c", "xyzw"[swiz[i]]);
 399    }
 400    fprintf(f, " ");
 401    ir->val->accept(this);
 402    fprintf(f, ")");
 403 }
 404
 405
 406 void ir_print_visitor::visit(ir_dereference_variable *ir)
 407 {
 408    ir_variable *var = ir->variable_referenced();
 409    fprintf(f, "(var_ref %s) ", unique_name(var));
 410 }
 411
 412
 413 void ir_print_visitor::visit(ir_dereference_array *ir)
 414 {
 415    fprintf(f, "(array_ref ");
 416    ir->array->accept(this);
 417    ir->array_index->accept(this);
 418    fprintf(f, ") ");
 419 }
 420
 421
 422 void ir_print_visitor::visit(ir_dereference_record *ir)
 423 {
 424    fprintf(f, "(record_ref ");
 425    ir->record->accept(this);
 426    fprintf(f, " %s) ", ir->field);
 427 }
 428
 429
 430 void ir_print_visitor::visit(ir_assignment *ir)
 431 {
 432    fprintf(f, "(assign ");
 433
 434    if (ir->condition)
 435       ir->condition->accept(this);
 436
 437    char mask[5];
 438    unsigned j = 0;
 439
 440    for (unsigned i = 0; i < 4; i++) {
 441       if ((ir->write_mask & (1 << i)) != 0) {
 442          mask[j] = "xyzw"[i];
 443          j++;
 444       }
 445    }
 446    mask[j] = '\0';
 447
 448    fprintf(f, " (%s) ", mask);
 449
 450    ir->lhs->accept(this);
 451
 452    fprintf(f, " ");
 453
 454    ir->rhs->accept(this);
 455    fprintf(f, ") ");
 456 }
 457
 458
 459 void ir_print_visitor::visit(ir_constant *ir)
 460 {
 461    fprintf(f, "(constant ");
 462    print_type(f, ir->type);
 463    fprintf(f, " (");
 464
 465    if (ir->type->is_array()) {
 466       for (unsigned i = 0; i < ir->type->length; i++)
 467          ir->get_array_element(i)->accept(this);
 468    } else if (ir->type->is_record()) {
 469       ir_constant *value = (ir_constant *) ir->components.get_head();
 470       for (unsigned i = 0; i < ir->type->length; i++) {
 471          fprintf(f, "(%s ", ir->type->fields.structure[i].name);
 472          value->accept(this);
 473          fprintf(f, ")");
 474
 475          value = (ir_constant *) value->next;
 476       }
 477    } else {
 478       for (unsigned i = 0; i < ir->type->components(); i++) {
 479          if (i != 0)
 480             fprintf(f, " ");
 481          switch (ir->type->base_type) {
 482          case GLSL_TYPE_UINT:  fprintf(f, "%u", ir->value.u[i]); break;
 483          case GLSL_TYPE_INT:   fprintf(f, "%d", ir->value.i[i]); break;
 484          case GLSL_TYPE_FLOAT:
 485             if (ir->value.f[i] == 0.0f)
 486                /* 0.0 == -0.0, so print with %f to get the proper sign. */
 487                fprintf(f, "%f", ir->value.f[i]);
 488             else if (fabs(ir->value.f[i]) < 0.000001f)
 489                fprintf(f, "%a", ir->value.f[i]);
 490             else if (fabs(ir->value.f[i]) > 1000000.0f)
 491                fprintf(f, "%e", ir->value.f[i]);
 492             else
 493                fprintf(f, "%f", ir->value.f[i]);
 494             break;
 495          case GLSL_TYPE_UINT64:fprintf(f, "%" PRIu64, ir->value.u64[i]); break;
 496          case GLSL_TYPE_INT64: fprintf(f, "%" PRIi64, ir->value.i64[i]); break;
 497          case GLSL_TYPE_BOOL:  fprintf(f, "%d", ir->value.b[i]); break;
 498          case GLSL_TYPE_DOUBLE:
 499             if (ir->value.d[i] == 0.0)
 500                /* 0.0 == -0.0, so print with %f to get the proper sign. */
 501                fprintf(f, "%.1f", ir->value.d[i]);
 502             else if (fabs(ir->value.d[i]) < 0.000001)
 503                fprintf(f, "%a", ir->value.d[i]);
 504             else if (fabs(ir->value.d[i]) > 1000000.0)
 505                fprintf(f, "%e", ir->value.d[i]);
 506             else
 507                fprintf(f, "%f", ir->value.d[i]);
 508             break;
 509          default:
 510             unreachable("Invalid constant type");
 511          }
 512       }
 513    }
 514    fprintf(f, ")) ");
 515 }
 516
 517
 518 void
 519 ir_print_visitor::visit(ir_call *ir)
 520 {
 521    fprintf(f, "(call %s ", ir->callee_name());
 522    if (ir->return_deref)
 523       ir->return_deref->accept(this);
 524    fprintf(f, " (");
 525    foreach_in_list(ir_rvalue, param, &ir->actual_parameters) {
 526       param->accept(this);
 527    }
 528    fprintf(f, "))\n");
 529 }
 530
 531
 532 void
 533 ir_print_visitor::visit(ir_return *ir)
 534 {
 535    fprintf(f, "(return");
 536
 537    ir_rvalue *const value = ir->get_value();
 538    if (value) {
 539       fprintf(f, " ");
 540       value->accept(this);
 541    }
 542
 543    fprintf(f, ")");
 544 }
 545
 546
 547 void
 548 ir_print_visitor::visit(ir_discard *ir)
 549 {
 550    fprintf(f, "(discard ");
 551
 552    if (ir->condition != NULL) {
 553       fprintf(f, " ");
 554       ir->condition->accept(this);
 555    }
 556
 557    fprintf(f, ")");
 558 }
 559
 560
 561 void
 562 ir_print_visitor::visit(ir_if *ir)
 563 {
 564    fprintf(f, "(if ");
 565    ir->condition->accept(this);
 566
 567    fprintf(f, "(\n");
 568    indentation++;
 569
 570    foreach_in_list(ir_instruction, inst, &ir->then_instructions) {
 571       indent();
 572       inst->accept(this);
 573       fprintf(f, "\n");
 574    }
 575
 576    indentation--;
 577    indent();
 578    fprintf(f, ")\n");
 579
 580    indent();
 581    if (!ir->else_instructions.is_empty()) {
 582       fprintf(f, "(\n");
 583       indentation++;
 584
 585       foreach_in_list(ir_instruction, inst, &ir->else_instructions) {
 586          indent();
 587          inst->accept(this);
 588          fprintf(f, "\n");
 589       }
 590       indentation--;
 591       indent();
 592       fprintf(f, "))\n");
 593    } else {
 594       fprintf(f, "())\n");
 595    }
 596 }
 597
 598
 599 void
 600 ir_print_visitor::visit(ir_loop *ir)
 601 {
 602    fprintf(f, "(loop (\n");
 603    indentation++;
 604
 605    foreach_in_list(ir_instruction, inst, &ir->body_instructions) {
 606       indent();
 607       inst->accept(this);
 608       fprintf(f, "\n");
 609    }
 610    indentation--;
 611    indent();
 612    fprintf(f, "))\n");
 613 }
 614
 615
 616 void
 617 ir_print_visitor::visit(ir_loop_jump *ir)
 618 {
 619    fprintf(f, "%s", ir->is_break() ? "break" : "continue");
 620 }
 621
 622 void
 623 ir_print_visitor::visit(ir_emit_vertex *ir)
 624 {
 625    fprintf(f, "(emit-vertex ");
 626    ir->stream->accept(this);
 627    fprintf(f, ")\n");
 628 }
 629
 630 void
 631 ir_print_visitor::visit(ir_end_primitive *ir)
 632 {
 633    fprintf(f, "(end-primitive ");
 634    ir->stream->accept(this);
 635    fprintf(f, ")\n");
 636 }
 637
 638 void
 639 ir_print_visitor::visit(ir_barrier *)
 640 {
 641    fprintf(f, "(barrier)\n");
 642 }