src/compiler/glsl/ir_validate.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 /**
  25  * \file ir_validate.cpp
  26  *
  27  * Attempts to verify that various invariants of the IR tree are true.
  28  *
  29  * In particular, at the moment it makes sure that no single
  30  * ir_instruction node except for ir_variable appears multiple times
  31  * in the ir tree.  ir_variable does appear multiple times: Once as a
  32  * declaration in an exec_list, and multiple times as the endpoint of
  33  * a dereference chain.
  34  */
  35
  36 #include "ir.h"
  37 #include "ir_hierarchical_visitor.h"
  38 #include "util/hash_table.h"
  39 #include "util/macros.h"
  40 #include "util/set.h"
  41 #include "compiler/glsl_types.h"
  42
  43 namespace {
  44
  45 class ir_validate : public ir_hierarchical_visitor {
  46 public:
  47    ir_validate()
  48    {
  49       this->ir_set = _mesa_pointer_set_create(NULL);
  50
  51       this->current_function = NULL;
  52
  53       this->callback_enter = ir_validate::validate_ir;
  54       this->data_enter = ir_set;
  55    }
  56
  57    ~ir_validate()
  58    {
  59       _mesa_set_destroy(this->ir_set, NULL);
  60    }
  61
  62    virtual ir_visitor_status visit(ir_variable *v);
  63    virtual ir_visitor_status visit(ir_dereference_variable *ir);
  64
  65    virtual ir_visitor_status visit_enter(ir_discard *ir);
  66    virtual ir_visitor_status visit_enter(ir_if *ir);
  67
  68    virtual ir_visitor_status visit_enter(ir_function *ir);
  69    virtual ir_visitor_status visit_leave(ir_function *ir);
  70    virtual ir_visitor_status visit_enter(ir_function_signature *ir);
  71
  72    virtual ir_visitor_status visit_leave(ir_expression *ir);
  73    virtual ir_visitor_status visit_leave(ir_swizzle *ir);
  74
  75    virtual ir_visitor_status visit_enter(class ir_dereference_array *);
  76
  77    virtual ir_visitor_status visit_enter(ir_assignment *ir);
  78    virtual ir_visitor_status visit_enter(ir_call *ir);
  79
  80    static void validate_ir(ir_instruction *ir, void *data);
  81
  82    ir_function *current_function;
  83
  84    struct set *ir_set;
  85 };
  86
  87 } /* anonymous namespace */
  88
  89 ir_visitor_status
  90 ir_validate::visit(ir_dereference_variable *ir)
  91 {
  92    if ((ir->var == NULL) || (ir->var->as_variable() == NULL)) {
  93       printf("ir_dereference_variable @ %p does not specify a variable %p\n",
  94              (void *) ir, (void *) ir->var);
  95       abort();
  96    }
  97
  98    if (_mesa_set_search(ir_set, ir->var) == NULL) {
  99       printf("ir_dereference_variable @ %p specifies undeclared variable "
 100              "`%s' @ %p\n",
 101              (void *) ir, ir->var->name, (void *) ir->var);
 102       abort();
 103    }
 104
 105    this->validate_ir(ir, this->data_enter);
 106
 107    return visit_continue;
 108 }
 109
 110 ir_visitor_status
 111 ir_validate::visit_enter(class ir_dereference_array *ir)
 112 {
 113    if (!ir->array->type->is_array() && !ir->array->type->is_matrix() &&
 114       !ir->array->type->is_vector()) {
 115       printf("ir_dereference_array @ %p does not specify an array, a vector "
 116              "or a matrix\n",
 117              (void *) ir);
 118       ir->print();
 119       printf("\n");
 120       abort();
 121    }
 122
 123    if (!ir->array_index->type->is_scalar()) {
 124       printf("ir_dereference_array @ %p does not have scalar index: %s\n",
 125              (void *) ir, ir->array_index->type->name);
 126       abort();
 127    }
 128
 129    if (!ir->array_index->type->is_integer_32()) {
 130       printf("ir_dereference_array @ %p does not have integer index: %s\n",
 131              (void *) ir, ir->array_index->type->name);
 132       abort();
 133    }
 134
 135    return visit_continue;
 136 }
 137
 138 ir_visitor_status
 139 ir_validate::visit_enter(ir_discard *ir)
 140 {
 141    if (ir->condition && ir->condition->type != glsl_type::bool_type) {
 142       printf("ir_discard condition %s type instead of bool.\n",
 143              ir->condition->type->name);
 144       ir->print();
 145       printf("\n");
 146       abort();
 147    }
 148
 149    return visit_continue;
 150 }
 151
 152 ir_visitor_status
 153 ir_validate::visit_enter(ir_if *ir)
 154 {
 155    if (ir->condition->type != glsl_type::bool_type) {
 156       printf("ir_if condition %s type instead of bool.\n",
 157              ir->condition->type->name);
 158       ir->print();
 159       printf("\n");
 160       abort();
 161    }
 162
 163    return visit_continue;
 164 }
 165
 166
 167 ir_visitor_status
 168 ir_validate::visit_enter(ir_function *ir)
 169 {
 170    /* Function definitions cannot be nested.
 171     */
 172    if (this->current_function != NULL) {
 173       printf("Function definition nested inside another function "
 174              "definition:\n");
 175       printf("%s %p inside %s %p\n",
 176              ir->name, (void *) ir,
 177              this->current_function->name, (void *) this->current_function);
 178       abort();
 179    }
 180
 181    /* Store the current function hierarchy being traversed.  This is used
 182     * by the function signature visitor to ensure that the signatures are
 183     * linked with the correct functions.
 184     */
 185    this->current_function = ir;
 186
 187    this->validate_ir(ir, this->data_enter);
 188
 189    /* Verify that all of the things stored in the list of signatures are,
 190     * in fact, function signatures.
 191     */
 192    foreach_in_list(ir_instruction, sig, &ir->signatures) {
 193       if (sig->ir_type != ir_type_function_signature) {
 194          printf("Non-signature in signature list of function `%s'\n",
 195                 ir->name);
 196          abort();
 197       }
 198    }
 199
 200    return visit_continue;
 201 }
 202
 203 ir_visitor_status
 204 ir_validate::visit_leave(ir_function *ir)
 205 {
 206    assert(ralloc_parent(ir->name) == ir);
 207
 208    this->current_function = NULL;
 209    return visit_continue;
 210 }
 211
 212 ir_visitor_status
 213 ir_validate::visit_enter(ir_function_signature *ir)
 214 {
 215    if (this->current_function != ir->function()) {
 216       printf("Function signature nested inside wrong function "
 217              "definition:\n");
 218       printf("%p inside %s %p instead of %s %p\n",
 219              (void *) ir,
 220              this->current_function->name, (void *) this->current_function,
 221              ir->function_name(), (void *) ir->function());
 222       abort();
 223    }
 224
 225    if (ir->return_type == NULL) {
 226       printf("Function signature %p for function %s has NULL return type.\n",
 227              (void *) ir, ir->function_name());
 228       abort();
 229    }
 230
 231    this->validate_ir(ir, this->data_enter);
 232
 233    return visit_continue;
 234 }
 235
 236 ir_visitor_status
 237 ir_validate::visit_leave(ir_expression *ir)
 238 {
 239    for (unsigned i = ir->num_operands; i < 4; i++) {
 240       assert(ir->operands[i] == NULL);
 241    }
 242
 243    for (unsigned i = 0; i < ir->num_operands; i++) {
 244       assert(ir->operands[i] != NULL);
 245    }
 246
 247    switch (ir->operation) {
 248    case ir_unop_bit_not:
 249       assert(ir->operands[0]->type == ir->type);
 250       break;
 251    case ir_unop_logic_not:
 252       assert(ir->type->is_boolean());
 253       assert(ir->operands[0]->type->is_boolean());
 254       break;
 255
 256    case ir_unop_neg:
 257       assert(ir->type == ir->operands[0]->type);
 258       break;
 259
 260    case ir_unop_abs:
 261    case ir_unop_sign:
 262       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT ||
 263              ir->operands[0]->type->is_float_16_32_64() ||
 264              ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 265       assert(ir->type == ir->operands[0]->type);
 266       break;
 267
 268    case ir_unop_rcp:
 269    case ir_unop_rsq:
 270    case ir_unop_sqrt:
 271       assert(ir->type->is_float_16_32_64());
 272       assert(ir->type == ir->operands[0]->type);
 273       break;
 274
 275    case ir_unop_exp:
 276    case ir_unop_log:
 277    case ir_unop_exp2:
 278    case ir_unop_log2:
 279    case ir_unop_saturate:
 280       assert(ir->operands[0]->type->is_float_16_32());
 281       assert(ir->type == ir->operands[0]->type);
 282       break;
 283
 284    case ir_unop_f2i:
 285       assert(ir->operands[0]->type->is_float());
 286       assert(ir->type->base_type == GLSL_TYPE_INT);
 287       break;
 288    case ir_unop_f2u:
 289       assert(ir->operands[0]->type->is_float());
 290       assert(ir->type->base_type == GLSL_TYPE_UINT);
 291       break;
 292    case ir_unop_i2f:
 293       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT);
 294       assert(ir->type->is_float());
 295       break;
 296    case ir_unop_f2b:
 297       assert(ir->operands[0]->type->is_float());
 298       assert(ir->type->is_boolean());
 299       break;
 300    case ir_unop_f162b:
 301       assert(ir->operands[0]->type->base_type ==
 302              GLSL_TYPE_FLOAT16);
 303       assert(ir->type->is_boolean());
 304       break;
 305    case ir_unop_b2f:
 306       assert(ir->operands[0]->type->is_boolean());
 307       assert(ir->type->is_float());
 308       break;
 309    case ir_unop_b2f16:
 310       assert(ir->operands[0]->type->is_boolean());
 311       assert(ir->type->base_type == GLSL_TYPE_FLOAT16);
 312       break;
 313    case ir_unop_i2b:
 314       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT);
 315       assert(ir->type->is_boolean());
 316       break;
 317    case ir_unop_b2i:
 318       assert(ir->operands[0]->type->is_boolean());
 319       assert(ir->type->base_type == GLSL_TYPE_INT);
 320       break;
 321    case ir_unop_u2f:
 322       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT);
 323       assert(ir->type->is_float());
 324       break;
 325    case ir_unop_i2u:
 326       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT);
 327       assert(ir->type->base_type == GLSL_TYPE_UINT);
 328       break;
 329    case ir_unop_u2i:
 330       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT);
 331       assert(ir->type->base_type == GLSL_TYPE_INT);
 332       break;
 333    case ir_unop_bitcast_i2f:
 334       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT);
 335       assert(ir->type->is_float());
 336       break;
 337    case ir_unop_bitcast_f2i:
 338       assert(ir->operands[0]->type->is_float());
 339       assert(ir->type->base_type == GLSL_TYPE_INT);
 340       break;
 341    case ir_unop_bitcast_u2f:
 342       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT);
 343       assert(ir->type->is_float());
 344       break;
 345    case ir_unop_bitcast_f2u:
 346       assert(ir->operands[0]->type->is_float());
 347       assert(ir->type->base_type == GLSL_TYPE_UINT);
 348       break;
 349
 350    case ir_unop_bitcast_u642d:
 351       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 352       assert(ir->type->is_double());
 353       break;
 354    case ir_unop_bitcast_i642d:
 355       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 356       assert(ir->type->is_double());
 357       break;
 358    case ir_unop_bitcast_d2u64:
 359       assert(ir->operands[0]->type->is_double());
 360       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 361       break;
 362    case ir_unop_bitcast_d2i64:
 363       assert(ir->operands[0]->type->is_double());
 364       assert(ir->type->base_type == GLSL_TYPE_INT64);
 365       break;
 366    case ir_unop_i642i:
 367       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 368       assert(ir->type->base_type == GLSL_TYPE_INT);
 369       break;
 370    case ir_unop_u642i:
 371       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 372       assert(ir->type->base_type == GLSL_TYPE_INT);
 373       break;
 374    case ir_unop_i642u:
 375       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 376       assert(ir->type->base_type == GLSL_TYPE_UINT);
 377       break;
 378    case ir_unop_u642u:
 379       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 380       assert(ir->type->base_type == GLSL_TYPE_UINT);
 381       break;
 382    case ir_unop_i642b:
 383       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 384       assert(ir->type->is_boolean());
 385       break;
 386    case ir_unop_i642f:
 387       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 388       assert(ir->type->is_float());
 389       break;
 390    case ir_unop_u642f:
 391       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 392       assert(ir->type->is_float());
 393       break;
 394    case ir_unop_i642d:
 395       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 396       assert(ir->type->is_double());
 397       break;
 398    case ir_unop_u642d:
 399       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 400       assert(ir->type->is_double());
 401       break;
 402    case ir_unop_i2i64:
 403       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT);
 404       assert(ir->type->base_type == GLSL_TYPE_INT64);
 405       break;
 406    case ir_unop_u2i64:
 407       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT);
 408       assert(ir->type->base_type == GLSL_TYPE_INT64);
 409       break;
 410    case ir_unop_b2i64:
 411       assert(ir->operands[0]->type->is_boolean());
 412       assert(ir->type->base_type == GLSL_TYPE_INT64);
 413       break;
 414    case ir_unop_f2i64:
 415       assert(ir->operands[0]->type->is_float());
 416       assert(ir->type->base_type == GLSL_TYPE_INT64);
 417       break;
 418    case ir_unop_d2i64:
 419       assert(ir->operands[0]->type->is_double());
 420       assert(ir->type->base_type == GLSL_TYPE_INT64);
 421       break;
 422    case ir_unop_i2u64:
 423       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT);
 424       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 425       break;
 426    case ir_unop_u2u64:
 427       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT);
 428       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 429       break;
 430    case ir_unop_f2u64:
 431       assert(ir->operands[0]->type->is_float());
 432       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 433       break;
 434    case ir_unop_d2u64:
 435       assert(ir->operands[0]->type->is_double());
 436       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 437       break;
 438    case ir_unop_u642i64:
 439       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 440       assert(ir->type->base_type == GLSL_TYPE_INT64);
 441       break;
 442    case ir_unop_i642u64:
 443       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 444       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 445       break;
 446    case ir_unop_trunc:
 447    case ir_unop_round_even:
 448    case ir_unop_ceil:
 449    case ir_unop_floor:
 450    case ir_unop_fract:
 451       assert(ir->operands[0]->type->is_float_16_32_64());
 452       assert(ir->operands[0]->type == ir->type);
 453       break;
 454    case ir_unop_sin:
 455    case ir_unop_cos:
 456    case ir_unop_dFdx:
 457    case ir_unop_dFdx_coarse:
 458    case ir_unop_dFdx_fine:
 459    case ir_unop_dFdy:
 460    case ir_unop_dFdy_coarse:
 461    case ir_unop_dFdy_fine:
 462       assert(ir->operands[0]->type->is_float_16_32());
 463       assert(ir->operands[0]->type == ir->type);
 464       break;
 465
 466    case ir_unop_pack_snorm_2x16:
 467    case ir_unop_pack_unorm_2x16:
 468    case ir_unop_pack_half_2x16:
 469       assert(ir->type == glsl_type::uint_type);
 470       assert(ir->operands[0]->type == glsl_type::vec2_type);
 471       break;
 472
 473    case ir_unop_pack_snorm_4x8:
 474    case ir_unop_pack_unorm_4x8:
 475       assert(ir->type == glsl_type::uint_type);
 476       assert(ir->operands[0]->type == glsl_type::vec4_type);
 477       break;
 478
 479    case ir_unop_pack_double_2x32:
 480       assert(ir->type == glsl_type::double_type);
 481       assert(ir->operands[0]->type == glsl_type::uvec2_type);
 482       break;
 483
 484    case ir_unop_pack_int_2x32:
 485       assert(ir->type == glsl_type::int64_t_type);
 486       assert(ir->operands[0]->type == glsl_type::ivec2_type);
 487       break;
 488
 489    case ir_unop_pack_uint_2x32:
 490       assert(ir->type == glsl_type::uint64_t_type);
 491       assert(ir->operands[0]->type == glsl_type::uvec2_type);
 492       break;
 493
 494    case ir_unop_pack_sampler_2x32:
 495       assert(ir->type->is_sampler());
 496       assert(ir->operands[0]->type == glsl_type::uvec2_type);
 497       break;
 498
 499    case ir_unop_pack_image_2x32:
 500       assert(ir->type->is_image());
 501       assert(ir->operands[0]->type == glsl_type::uvec2_type);
 502       break;
 503
 504    case ir_unop_unpack_snorm_2x16:
 505    case ir_unop_unpack_unorm_2x16:
 506    case ir_unop_unpack_half_2x16:
 507       assert(ir->type == glsl_type::vec2_type);
 508       assert(ir->operands[0]->type == glsl_type::uint_type);
 509       break;
 510
 511    case ir_unop_unpack_snorm_4x8:
 512    case ir_unop_unpack_unorm_4x8:
 513       assert(ir->type == glsl_type::vec4_type);
 514       assert(ir->operands[0]->type == glsl_type::uint_type);
 515       break;
 516
 517    case ir_unop_unpack_double_2x32:
 518       assert(ir->type == glsl_type::uvec2_type);
 519       assert(ir->operands[0]->type == glsl_type::double_type);
 520       break;
 521
 522    case ir_unop_unpack_int_2x32:
 523       assert(ir->type == glsl_type::ivec2_type);
 524       assert(ir->operands[0]->type == glsl_type::int64_t_type);
 525       break;
 526
 527    case ir_unop_unpack_uint_2x32:
 528       assert(ir->type == glsl_type::uvec2_type);
 529       assert(ir->operands[0]->type == glsl_type::uint64_t_type);
 530       break;
 531
 532    case ir_unop_unpack_sampler_2x32:
 533       assert(ir->type == glsl_type::uvec2_type);
 534       assert(ir->operands[0]->type->is_sampler());
 535       break;
 536
 537    case ir_unop_unpack_image_2x32:
 538       assert(ir->type == glsl_type::uvec2_type);
 539       assert(ir->operands[0]->type->is_image());
 540       break;
 541
 542    case ir_unop_bitfield_reverse:
 543       assert(ir->operands[0]->type == ir->type);
 544       assert(ir->type->is_integer_32());
 545       break;
 546
 547    case ir_unop_bit_count:
 548    case ir_unop_find_msb:
 549    case ir_unop_find_lsb:
 550       assert(ir->operands[0]->type->vector_elements == ir->type->vector_elements);
 551       assert(ir->operands[0]->type->is_integer_32());
 552       assert(ir->type->base_type == GLSL_TYPE_INT);
 553       break;
 554
 555    case ir_unop_clz:
 556       assert(ir->operands[0]->type == ir->type);
 557       assert(ir->type->base_type == GLSL_TYPE_UINT);
 558       break;
 559
 560    case ir_unop_interpolate_at_centroid:
 561       assert(ir->operands[0]->type == ir->type);
 562       assert(ir->operands[0]->type->is_float_16_32());
 563       break;
 564
 565    case ir_unop_get_buffer_size:
 566       assert(ir->type == glsl_type::int_type);
 567       assert(ir->operands[0]->type == glsl_type::uint_type);
 568       break;
 569
 570    case ir_unop_ssbo_unsized_array_length:
 571       assert(ir->type == glsl_type::int_type);
 572       assert(ir->operands[0]->type->is_array());
 573       assert(ir->operands[0]->type->is_unsized_array());
 574       break;
 575
 576    case ir_unop_d2f:
 577       assert(ir->operands[0]->type->is_double());
 578       assert(ir->type->is_float());
 579       break;
 580    case ir_unop_f2d:
 581       assert(ir->operands[0]->type->is_float());
 582       assert(ir->type->is_double());
 583       break;
 584    case ir_unop_f162f:
 585       assert(ir->operands[0]->type->base_type == GLSL_TYPE_FLOAT16);
 586       assert(ir->type->is_float());
 587       break;
 588    case ir_unop_f2f16:
 589    case ir_unop_f2fmp:
 590       assert(ir->operands[0]->type->is_float());
 591       assert(ir->type->base_type == GLSL_TYPE_FLOAT16);
 592       break;
 593    case ir_unop_d2i:
 594       assert(ir->operands[0]->type->is_double());
 595       assert(ir->type->base_type == GLSL_TYPE_INT);
 596       break;
 597    case ir_unop_i2d:
 598       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT);
 599       assert(ir->type->is_double());
 600       break;
 601    case ir_unop_d2u:
 602       assert(ir->operands[0]->type->is_double());
 603       assert(ir->type->base_type == GLSL_TYPE_UINT);
 604       break;
 605    case ir_unop_u2d:
 606       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT);
 607       assert(ir->type->is_double());
 608       break;
 609    case ir_unop_d2b:
 610       assert(ir->operands[0]->type->is_double());
 611       assert(ir->type->is_boolean());
 612       break;
 613
 614    case ir_unop_frexp_sig:
 615       assert(ir->operands[0]->type->is_float_16_32_64());
 616       assert(ir->type->is_double());
 617       break;
 618    case ir_unop_frexp_exp:
 619       assert(ir->operands[0]->type->is_float_16_32_64());
 620       assert(ir->type->base_type == GLSL_TYPE_INT);
 621       break;
 622    case ir_unop_subroutine_to_int:
 623       assert(ir->operands[0]->type->base_type == GLSL_TYPE_SUBROUTINE);
 624       assert(ir->type->base_type == GLSL_TYPE_INT);
 625       break;
 626
 627    case ir_unop_atan:
 628       assert(ir->operands[0]->type->is_float_16_32_64());
 629       assert(ir->type == ir->operands[0]->type);
 630       break;
 631
 632    case ir_binop_add:
 633    case ir_binop_sub:
 634    case ir_binop_mul:
 635    case ir_binop_div:
 636    case ir_binop_mod:
 637    case ir_binop_min:
 638    case ir_binop_max:
 639    case ir_binop_pow:
 640       assert(ir->operands[0]->type->base_type ==
 641              ir->operands[1]->type->base_type);
 642
 643       if (ir->operation == ir_binop_mul &&
 644           (ir->type->base_type == GLSL_TYPE_UINT64 ||
 645            ir->type->base_type == GLSL_TYPE_INT64) &&
 646           (ir->operands[0]->type->base_type == GLSL_TYPE_INT ||
 647            ir->operands[1]->type->base_type == GLSL_TYPE_INT ||
 648            ir->operands[0]->type->base_type == GLSL_TYPE_UINT ||
 649            ir->operands[1]->type->base_type == GLSL_TYPE_UINT)) {
 650          assert(ir->operands[0]->type == ir->operands[1]->type);
 651          break;
 652       }
 653
 654       if (ir->operands[0]->type->is_scalar())
 655          assert(ir->operands[1]->type == ir->type);
 656       else if (ir->operands[1]->type->is_scalar())
 657          assert(ir->operands[0]->type == ir->type);
 658       else if (ir->operands[0]->type->is_vector() &&
 659                ir->operands[1]->type->is_vector()) {
 660          assert(ir->operands[0]->type == ir->operands[1]->type);
 661          assert(ir->operands[0]->type == ir->type);
 662       }
 663       break;
 664
 665    case ir_binop_abs_sub:
 666       assert(ir->operands[0]->type == ir->operands[1]->type);
 667       assert(ir->operands[0]->type->is_integer_32_64());
 668       assert(ir->operands[0]->type->vector_elements ==
 669              ir->type->vector_elements);
 670       assert(ir->type->base_type == GLSL_TYPE_UINT ||
 671              ir->type->base_type == GLSL_TYPE_UINT64);
 672       break;
 673
 674    case ir_binop_add_sat:
 675    case ir_binop_sub_sat:
 676    case ir_binop_avg:
 677    case ir_binop_avg_round:
 678       assert(ir->type == ir->operands[0]->type);
 679       assert(ir->type == ir->operands[1]->type);
 680       assert(ir->type->is_integer_32_64());
 681       break;
 682
 683    case ir_binop_mul_32x16:
 684    case ir_binop_imul_high:
 685       assert(ir->type == ir->operands[0]->type);
 686       assert(ir->type == ir->operands[1]->type);
 687       assert(ir->type->is_integer_32());
 688       break;
 689
 690    case ir_binop_carry:
 691    case ir_binop_borrow:
 692       assert(ir->type == ir->operands[0]->type);
 693       assert(ir->type == ir->operands[1]->type);
 694       assert(ir->type->base_type == GLSL_TYPE_UINT);
 695       break;
 696
 697    case ir_binop_less:
 698    case ir_binop_gequal:
 699    case ir_binop_equal:
 700    case ir_binop_nequal:
 701       /* The semantics of the IR operators differ from the GLSL <, >, <=, >=,
 702        * ==, and != operators.  The IR operators perform a component-wise
 703        * comparison on scalar or vector types and return a boolean scalar or
 704        * vector type of the same size.
 705        */
 706       assert(ir->type->is_boolean());
 707       assert(ir->operands[0]->type == ir->operands[1]->type);
 708       assert(ir->operands[0]->type->is_vector()
 709              || ir->operands[0]->type->is_scalar());
 710       assert(ir->operands[0]->type->vector_elements
 711              == ir->type->vector_elements);
 712       break;
 713
 714    case ir_binop_all_equal:
 715    case ir_binop_any_nequal:
 716       /* GLSL == and != operate on scalars, vectors, matrices and arrays, and
 717        * return a scalar boolean.  The IR matches that.
 718        */
 719       assert(ir->type == glsl_type::bool_type);
 720       assert(ir->operands[0]->type == ir->operands[1]->type);
 721       break;
 722
 723    case ir_binop_lshift:
 724    case ir_binop_rshift:
 725       assert(ir->operands[0]->type->is_integer_32_64() &&
 726              ir->operands[1]->type->is_integer_32());
 727       if (ir->operands[0]->type->is_scalar()) {
 728           assert(ir->operands[1]->type->is_scalar());
 729       }
 730       if (ir->operands[0]->type->is_vector() &&
 731           ir->operands[1]->type->is_vector()) {
 732           assert(ir->operands[0]->type->components() ==
 733                  ir->operands[1]->type->components());
 734       }
 735       assert(ir->type == ir->operands[0]->type);
 736       break;
 737
 738    case ir_binop_bit_and:
 739    case ir_binop_bit_xor:
 740    case ir_binop_bit_or:
 741        assert(ir->operands[0]->type->base_type ==
 742               ir->operands[1]->type->base_type);
 743        assert(ir->type->is_integer_32_64());
 744        if (ir->operands[0]->type->is_vector() &&
 745            ir->operands[1]->type->is_vector()) {
 746            assert(ir->operands[0]->type->vector_elements ==
 747                   ir->operands[1]->type->vector_elements);
 748        }
 749        break;
 750
 751    case ir_binop_logic_and:
 752    case ir_binop_logic_xor:
 753    case ir_binop_logic_or:
 754       assert(ir->type->is_boolean());
 755       assert(ir->operands[0]->type->is_boolean());
 756       assert(ir->operands[1]->type->is_boolean());
 757       break;
 758
 759    case ir_binop_dot:
 760       assert(ir->type == glsl_type::float_type ||
 761              ir->type == glsl_type::double_type ||
 762              ir->type == glsl_type::float16_t_type);
 763       assert(ir->operands[0]->type->is_float_16_32_64());
 764       assert(ir->operands[0]->type->is_vector());
 765       assert(ir->operands[0]->type == ir->operands[1]->type);
 766       break;
 767
 768    case ir_binop_ubo_load:
 769       assert(ir->operands[0]->type == glsl_type::uint_type);
 770
 771       assert(ir->operands[1]->type == glsl_type::uint_type);
 772       break;
 773
 774    case ir_binop_ldexp:
 775       assert(ir->operands[0]->type == ir->type);
 776       assert(ir->operands[0]->type->is_float_16_32_64());
 777       assert(ir->operands[1]->type->base_type == GLSL_TYPE_INT);
 778       assert(ir->operands[0]->type->components() ==
 779              ir->operands[1]->type->components());
 780       break;
 781
 782    case ir_binop_vector_extract:
 783       assert(ir->operands[0]->type->is_vector());
 784       assert(ir->operands[1]->type->is_scalar()
 785              && ir->operands[1]->type->is_integer_32());
 786       break;
 787
 788    case ir_binop_interpolate_at_offset:
 789       assert(ir->operands[0]->type == ir->type);
 790       assert(ir->operands[0]->type->is_float());
 791       assert(ir->operands[1]->type->components() == 2);
 792       assert(ir->operands[1]->type->is_float());
 793       break;
 794
 795    case ir_binop_interpolate_at_sample:
 796       assert(ir->operands[0]->type == ir->type);
 797       assert(ir->operands[0]->type->is_float());
 798       assert(ir->operands[1]->type == glsl_type::int_type);
 799       break;
 800
 801    case ir_binop_atan2:
 802       assert(ir->operands[0]->type->is_float_16_32_64());
 803       assert(ir->operands[1]->type == ir->operands[0]->type);
 804       assert(ir->type == ir->operands[0]->type);
 805       break;
 806
 807    case ir_triop_fma:
 808       assert(ir->type->is_float_16_32_64());
 809       assert(ir->type == ir->operands[0]->type);
 810       assert(ir->type == ir->operands[1]->type);
 811       assert(ir->type == ir->operands[2]->type);
 812       break;
 813
 814    case ir_triop_lrp:
 815       assert(ir->operands[0]->type->is_float_16_32_64());
 816       assert(ir->operands[0]->type == ir->operands[1]->type);
 817       assert(ir->operands[2]->type == ir->operands[0]->type ||
 818              ir->operands[2]->type == glsl_type::float_type ||
 819              ir->operands[2]->type == glsl_type::double_type ||
 820              ir->operands[2]->type == glsl_type::float16_t_type);
 821       break;
 822
 823    case ir_triop_csel:
 824       assert(ir->operands[0]->type->is_boolean());
 825       assert(ir->type->vector_elements == ir->operands[0]->type->vector_elements);
 826       assert(ir->type == ir->operands[1]->type);
 827       assert(ir->type == ir->operands[2]->type);
 828       break;
 829
 830    case ir_triop_bitfield_extract:
 831       assert(ir->type->is_integer_32());
 832       assert(ir->operands[0]->type == ir->type);
 833       assert(ir->operands[1]->type == ir->type);
 834       assert(ir->operands[2]->type == ir->type);
 835       break;
 836
 837    case ir_triop_vector_insert:
 838       assert(ir->operands[0]->type->is_vector());
 839       assert(ir->operands[1]->type->is_scalar());
 840       assert(ir->operands[0]->type->base_type == ir->operands[1]->type->base_type);
 841       assert(ir->operands[2]->type->is_scalar()
 842              && ir->operands[2]->type->is_integer_32());
 843       assert(ir->type == ir->operands[0]->type);
 844       break;
 845
 846    case ir_quadop_bitfield_insert:
 847       assert(ir->type->is_integer_32());
 848       assert(ir->operands[0]->type == ir->type);
 849       assert(ir->operands[1]->type == ir->type);
 850       assert(ir->operands[2]->type == ir->type);
 851       assert(ir->operands[3]->type == ir->type);
 852       break;
 853
 854    case ir_quadop_vector:
 855       /* The vector operator collects some number of scalars and generates a
 856        * vector from them.
 857        *
 858        *  - All of the operands must be scalar.
 859        *  - Number of operands must matche the size of the resulting vector.
 860        *  - Base type of the operands must match the base type of the result.
 861        */
 862       assert(ir->type->is_vector());
 863       switch (ir->type->vector_elements) {
 864       case 2:
 865          assert(ir->operands[0]->type->is_scalar());
 866          assert(ir->operands[0]->type->base_type == ir->type->base_type);
 867          assert(ir->operands[1]->type->is_scalar());
 868          assert(ir->operands[1]->type->base_type == ir->type->base_type);
 869          assert(ir->operands[2] == NULL);
 870          assert(ir->operands[3] == NULL);
 871          break;
 872       case 3:
 873          assert(ir->operands[0]->type->is_scalar());
 874          assert(ir->operands[0]->type->base_type == ir->type->base_type);
 875          assert(ir->operands[1]->type->is_scalar());
 876          assert(ir->operands[1]->type->base_type == ir->type->base_type);
 877          assert(ir->operands[2]->type->is_scalar());
 878          assert(ir->operands[2]->type->base_type == ir->type->base_type);
 879          assert(ir->operands[3] == NULL);
 880          break;
 881       case 4:
 882          assert(ir->operands[0]->type->is_scalar());
 883          assert(ir->operands[0]->type->base_type == ir->type->base_type);
 884          assert(ir->operands[1]->type->is_scalar());
 885          assert(ir->operands[1]->type->base_type == ir->type->base_type);
 886          assert(ir->operands[2]->type->is_scalar());
 887          assert(ir->operands[2]->type->base_type == ir->type->base_type);
 888          assert(ir->operands[3]->type->is_scalar());
 889          assert(ir->operands[3]->type->base_type == ir->type->base_type);
 890          break;
 891       default:
 892          /* The is_vector assertion above should prevent execution from ever
 893           * getting here.
 894           */
 895          assert(!"Should not get here.");
 896          break;
 897       }
 898    }
 899
 900    return visit_continue;
 901 }
 902
 903 ir_visitor_status
 904 ir_validate::visit_leave(ir_swizzle *ir)
 905 {
 906    unsigned int chans[4] = {ir->mask.x, ir->mask.y, ir->mask.z, ir->mask.w};
 907
 908    for (unsigned int i = 0; i < ir->type->vector_elements; i++) {
 909       if (chans[i] >= ir->val->type->vector_elements) {
 910          printf("ir_swizzle @ %p specifies a channel not present "
 911                 "in the value.\n", (void *) ir);
 912          ir->print();
 913          abort();
 914       }
 915    }
 916
 917    return visit_continue;
 918 }
 919
 920 ir_visitor_status
 921 ir_validate::visit(ir_variable *ir)
 922 {
 923    /* An ir_variable is the one thing that can (and will) appear multiple times
 924     * in an IR tree.  It is added to the hashtable so that it can be used
 925     * in the ir_dereference_variable handler to ensure that a variable is
 926     * declared before it is dereferenced.
 927     */
 928    if (ir->name && ir->is_name_ralloced())
 929       assert(ralloc_parent(ir->name) == ir);
 930
 931    _mesa_set_add(ir_set, ir);
 932
 933    /* If a variable is an array, verify that the maximum array index is in
 934     * bounds.  There was once an error in AST-to-HIR conversion that set this
 935     * to be out of bounds.
 936     */
 937    if (ir->type->array_size() > 0) {
 938       if (ir->data.max_array_access >= (int)ir->type->length) {
 939          printf("ir_variable has maximum access out of bounds (%d vs %d)\n",
 940                 ir->data.max_array_access, ir->type->length - 1);
 941          ir->print();
 942          abort();
 943       }
 944    }
 945
 946    /* If a variable is an interface block (or an array of interface blocks),
 947     * verify that the maximum array index for each interface member is in
 948     * bounds.
 949     */
 950    if (ir->is_interface_instance()) {
 951       const glsl_struct_field *fields =
 952          ir->get_interface_type()->fields.structure;
 953       for (unsigned i = 0; i < ir->get_interface_type()->length; i++) {
 954          if (fields[i].type->array_size() > 0 &&
 955              !fields[i].implicit_sized_array) {
 956             const int *const max_ifc_array_access =
 957                ir->get_max_ifc_array_access();
 958
 959             assert(max_ifc_array_access != NULL);
 960
 961             if (max_ifc_array_access[i] >= (int)fields[i].type->length) {
 962                printf("ir_variable has maximum access out of bounds for "
 963                       "field %s (%d vs %d)\n", fields[i].name,
 964                       max_ifc_array_access[i], fields[i].type->length);
 965                ir->print();
 966                abort();
 967             }
 968          }
 969       }
 970    }
 971
 972    if (ir->constant_initializer != NULL && !ir->data.has_initializer) {
 973       printf("ir_variable didn't have an initializer, but has a constant "
 974              "initializer value.\n");
 975       ir->print();
 976       abort();
 977    }
 978
 979    if (ir->data.mode == ir_var_uniform
 980        && is_gl_identifier(ir->name)
 981        && ir->get_state_slots() == NULL) {
 982       printf("built-in uniform has no state\n");
 983       ir->print();
 984       abort();
 985    }
 986
 987    return visit_continue;
 988 }
 989
 990 ir_visitor_status
 991 ir_validate::visit_enter(ir_assignment *ir)
 992 {
 993    const ir_dereference *const lhs = ir->lhs;
 994    if (lhs->type->is_scalar() || lhs->type->is_vector()) {
 995       if (ir->write_mask == 0) {
 996          printf("Assignment LHS is %s, but write mask is 0:\n",
 997                 lhs->type->is_scalar() ? "scalar" : "vector");
 998          ir->print();
 999          abort();
1000       }
1001
1002       int lhs_components = 0;
1003       for (int i = 0; i < 4; i++) {
1004          if (ir->write_mask & (1 << i))
1005             lhs_components++;
1006       }
1007
1008       if (lhs_components != ir->rhs->type->vector_elements) {
1009          printf("Assignment count of LHS write mask channels enabled not\n"
1010                 "matching RHS vector size (%d LHS, %d RHS).\n",
1011                 lhs_components, ir->rhs->type->vector_elements);
1012          ir->print();
1013          abort();
1014       }
1015    }
1016
1017    this->validate_ir(ir, this->data_enter);
1018
1019    return visit_continue;
1020 }
1021
1022 ir_visitor_status
1023 ir_validate::visit_enter(ir_call *ir)
1024 {
1025    ir_function_signature *const callee = ir->callee;
1026
1027    if (callee->ir_type != ir_type_function_signature) {
1028       printf("IR called by ir_call is not ir_function_signature!\n");
1029       abort();
1030    }
1031
1032    if (ir->return_deref) {
1033       if (ir->return_deref->type != callee->return_type) {
1034          printf("callee type %s does not match return storage type %s\n",
1035                 callee->return_type->name, ir->return_deref->type->name);
1036          abort();
1037       }
1038    } else if (callee->return_type != glsl_type::void_type) {
1039       printf("ir_call has non-void callee but no return storage\n");
1040       abort();
1041    }
1042
1043    const exec_node *formal_param_node = callee->parameters.get_head_raw();
1044    const exec_node *actual_param_node = ir->actual_parameters.get_head_raw();
1045    while (true) {
1046       if (formal_param_node->is_tail_sentinel()
1047           != actual_param_node->is_tail_sentinel()) {
1048          printf("ir_call has the wrong number of parameters:\n");
1049          goto dump_ir;
1050       }
1051       if (formal_param_node->is_tail_sentinel()) {
1052          break;
1053       }
1054       const ir_variable *formal_param
1055          = (const ir_variable *) formal_param_node;
1056       const ir_rvalue *actual_param
1057          = (const ir_rvalue *) actual_param_node;
1058       if (formal_param->type != actual_param->type) {
1059          printf("ir_call parameter type mismatch:\n");
1060          goto dump_ir;
1061       }
1062       if (formal_param->data.mode == ir_var_function_out
1063           || formal_param->data.mode == ir_var_function_inout) {
1064          if (!actual_param->is_lvalue()) {
1065             printf("ir_call out/inout parameters must be lvalues:\n");
1066             goto dump_ir;
1067          }
1068       }
1069       formal_param_node = formal_param_node->next;
1070       actual_param_node = actual_param_node->next;
1071    }
1072
1073    return visit_continue;
1074
1075 dump_ir:
1076    ir->print();
1077    printf("callee:\n");
1078    callee->print();
1079    abort();
1080    return visit_stop;
1081 }
1082
1083 void
1084 ir_validate::validate_ir(ir_instruction *ir, void *data)
1085 {
1086    struct set *ir_set = (struct set *) data;
1087
1088    if (_mesa_set_search(ir_set, ir)) {
1089       printf("Instruction node present twice in ir tree:\n");
1090       ir->print();
1091       printf("\n");
1092       abort();
1093    }
1094    _mesa_set_add(ir_set, ir);
1095 }
1096
1097 #ifdef DEBUG
1098 static void
1099 check_node_type(ir_instruction *ir, void *data)
1100 {
1101    (void) data;
1102
1103    if (ir->ir_type >= ir_type_max) {
1104       printf("Instruction node with unset type\n");
1105       ir->print(); printf("\n");
1106    }
1107    ir_rvalue *value = ir->as_rvalue();
1108    if (value != NULL)
1109       assert(value->type != glsl_type::error_type);
1110 }
1111 #endif
1112
1113 void
1114 validate_ir_tree(exec_list *instructions)
1115 {
1116    /* We shouldn't have any reason to validate IR in a release build,
1117     * and it's half composed of assert()s anyway which wouldn't do
1118     * anything.
1119     */
1120 #ifdef DEBUG
1121    ir_validate v;
1122
1123    v.run(instructions);
1124
1125    foreach_in_list(ir_instruction, ir, instructions) {
1126       visit_tree(ir, check_node_type, NULL);
1127    }
1128 #endif
1129 }