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/debug.h"
  39 #include "util/hash_table.h"
  40 #include "util/macros.h"
  41 #include "util/set.h"
  42 #include "compiler/glsl_types.h"
  43
  44 namespace {
  45
  46 class ir_validate : public ir_hierarchical_visitor {
  47 public:
  48    ir_validate()
  49    {
  50       this->ir_set = _mesa_pointer_set_create(NULL);
  51
  52       this->current_function = NULL;
  53
  54       this->callback_enter = ir_validate::validate_ir;
  55       this->data_enter = ir_set;
  56    }
  57
  58    ~ir_validate()
  59    {
  60       _mesa_set_destroy(this->ir_set, NULL);
  61    }
  62
  63    virtual ir_visitor_status visit(ir_variable *v);
  64    virtual ir_visitor_status visit(ir_dereference_variable *ir);
  65
  66    virtual ir_visitor_status visit_enter(ir_discard *ir);
  67    virtual ir_visitor_status visit_enter(ir_if *ir);
  68
  69    virtual ir_visitor_status visit_enter(ir_function *ir);
  70    virtual ir_visitor_status visit_leave(ir_function *ir);
  71    virtual ir_visitor_status visit_enter(ir_function_signature *ir);
  72
  73    virtual ir_visitor_status visit_leave(ir_expression *ir);
  74    virtual ir_visitor_status visit_leave(ir_swizzle *ir);
  75
  76    virtual ir_visitor_status visit_enter(class ir_dereference_array *);
  77
  78    virtual ir_visitor_status visit_enter(ir_assignment *ir);
  79    virtual ir_visitor_status visit_enter(ir_call *ir);
  80
  81    static void validate_ir(ir_instruction *ir, void *data);
  82
  83    ir_function *current_function;
  84
  85    struct set *ir_set;
  86 };
  87
  88 } /* anonymous namespace */
  89
  90 ir_visitor_status
  91 ir_validate::visit(ir_dereference_variable *ir)
  92 {
  93    if ((ir->var == NULL) || (ir->var->as_variable() == NULL)) {
  94       printf("ir_dereference_variable @ %p does not specify a variable %p\n",
  95              (void *) ir, (void *) ir->var);
  96       abort();
  97    }
  98
  99    if (_mesa_set_search(ir_set, ir->var) == NULL) {
 100       printf("ir_dereference_variable @ %p specifies undeclared variable "
 101              "`%s' @ %p\n",
 102              (void *) ir, ir->var->name, (void *) ir->var);
 103       abort();
 104    }
 105
 106    this->validate_ir(ir, this->data_enter);
 107
 108    return visit_continue;
 109 }
 110
 111 ir_visitor_status
 112 ir_validate::visit_enter(class ir_dereference_array *ir)
 113 {
 114    if (!ir->array->type->is_array() && !ir->array->type->is_matrix() &&
 115       !ir->array->type->is_vector()) {
 116       printf("ir_dereference_array @ %p does not specify an array, a vector "
 117              "or a matrix\n",
 118              (void *) ir);
 119       ir->print();
 120       printf("\n");
 121       abort();
 122    }
 123
 124    if (!ir->array_index->type->is_scalar()) {
 125       printf("ir_dereference_array @ %p does not have scalar index: %s\n",
 126              (void *) ir, ir->array_index->type->name);
 127       abort();
 128    }
 129
 130    if (!ir->array_index->type->is_integer_16_32()) {
 131       printf("ir_dereference_array @ %p does not have integer index: %s\n",
 132              (void *) ir, ir->array_index->type->name);
 133       abort();
 134    }
 135
 136    return visit_continue;
 137 }
 138
 139 ir_visitor_status
 140 ir_validate::visit_enter(ir_discard *ir)
 141 {
 142    if (ir->condition && ir->condition->type != glsl_type::bool_type) {
 143       printf("ir_discard condition %s type instead of bool.\n",
 144              ir->condition->type->name);
 145       ir->print();
 146       printf("\n");
 147       abort();
 148    }
 149
 150    return visit_continue;
 151 }
 152
 153 ir_visitor_status
 154 ir_validate::visit_enter(ir_if *ir)
 155 {
 156    if (ir->condition->type != glsl_type::bool_type) {
 157       printf("ir_if condition %s type instead of bool.\n",
 158              ir->condition->type->name);
 159       ir->print();
 160       printf("\n");
 161       abort();
 162    }
 163
 164    return visit_continue;
 165 }
 166
 167
 168 ir_visitor_status
 169 ir_validate::visit_enter(ir_function *ir)
 170 {
 171    /* Function definitions cannot be nested.
 172     */
 173    if (this->current_function != NULL) {
 174       printf("Function definition nested inside another function "
 175              "definition:\n");
 176       printf("%s %p inside %s %p\n",
 177              ir->name, (void *) ir,
 178              this->current_function->name, (void *) this->current_function);
 179       abort();
 180    }
 181
 182    /* Store the current function hierarchy being traversed.  This is used
 183     * by the function signature visitor to ensure that the signatures are
 184     * linked with the correct functions.
 185     */
 186    this->current_function = ir;
 187
 188    this->validate_ir(ir, this->data_enter);
 189
 190    /* Verify that all of the things stored in the list of signatures are,
 191     * in fact, function signatures.
 192     */
 193    foreach_in_list(ir_instruction, sig, &ir->signatures) {
 194       if (sig->ir_type != ir_type_function_signature) {
 195          printf("Non-signature in signature list of function `%s'\n",
 196                 ir->name);
 197          abort();
 198       }
 199    }
 200
 201    return visit_continue;
 202 }
 203
 204 ir_visitor_status
 205 ir_validate::visit_leave(ir_function *ir)
 206 {
 207    assert(ralloc_parent(ir->name) == ir);
 208
 209    this->current_function = NULL;
 210    return visit_continue;
 211 }
 212
 213 ir_visitor_status
 214 ir_validate::visit_enter(ir_function_signature *ir)
 215 {
 216    if (this->current_function != ir->function()) {
 217       printf("Function signature nested inside wrong function "
 218              "definition:\n");
 219       printf("%p inside %s %p instead of %s %p\n",
 220              (void *) ir,
 221              this->current_function->name, (void *) this->current_function,
 222              ir->function_name(), (void *) ir->function());
 223       abort();
 224    }
 225
 226    if (ir->return_type == NULL) {
 227       printf("Function signature %p for function %s has NULL return type.\n",
 228              (void *) ir, ir->function_name());
 229       abort();
 230    }
 231
 232    this->validate_ir(ir, this->data_enter);
 233
 234    return visit_continue;
 235 }
 236
 237 ir_visitor_status
 238 ir_validate::visit_leave(ir_expression *ir)
 239 {
 240    for (unsigned i = ir->num_operands; i < 4; i++) {
 241       assert(ir->operands[i] == NULL);
 242    }
 243
 244    for (unsigned i = 0; i < ir->num_operands; i++) {
 245       assert(ir->operands[i] != NULL);
 246    }
 247
 248    switch (ir->operation) {
 249    case ir_unop_bit_not:
 250       assert(ir->operands[0]->type == ir->type);
 251       break;
 252    case ir_unop_logic_not:
 253       assert(ir->type->is_boolean());
 254       assert(ir->operands[0]->type->is_boolean());
 255       break;
 256
 257    case ir_unop_neg:
 258       assert(ir->type == ir->operands[0]->type);
 259       break;
 260
 261    case ir_unop_abs:
 262    case ir_unop_sign:
 263       assert(ir->operands[0]->type->is_int_16_32_64() ||
 264              ir->operands[0]->type->is_float_16_32_64());
 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_16_32());
 286       assert(ir->type->is_int_16_32());
 287       break;
 288    case ir_unop_f2u:
 289       assert(ir->operands[0]->type->is_float_16_32());
 290       assert(ir->type->is_uint_16_32());
 291       break;
 292    case ir_unop_i2f:
 293       assert(ir->operands[0]->type->is_int_16_32());
 294       assert(ir->type->is_float_16_32());
 295       break;
 296    case ir_unop_f2b:
 297       assert(ir->operands[0]->type->is_float_16_32());
 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_16_32());
 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->is_int_16_32());
 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->is_int_16_32());
 320       break;
 321    case ir_unop_u2f:
 322       assert(ir->operands[0]->type->is_uint_16_32());
 323       assert(ir->type->is_float_16_32());
 324       break;
 325    case ir_unop_i2u:
 326       assert(ir->operands[0]->type->is_int_16_32());
 327       assert(ir->type->is_uint_16_32());
 328       break;
 329    case ir_unop_u2i:
 330       assert(ir->operands[0]->type->is_uint_16_32());
 331       assert(ir->type->is_int_16_32());
 332       break;
 333    case ir_unop_bitcast_i2f:
 334       assert(ir->operands[0]->type->is_int_16_32());
 335       assert(ir->type->is_float_16_32());
 336       break;
 337    case ir_unop_bitcast_f2i:
 338       assert(ir->operands[0]->type->is_float_16_32());
 339       assert(ir->type->is_int_16_32());
 340       break;
 341    case ir_unop_bitcast_u2f:
 342       assert(ir->operands[0]->type->is_uint_16_32());
 343       assert(ir->type->is_float_16_32());
 344       break;
 345    case ir_unop_bitcast_f2u:
 346       assert(ir->operands[0]->type->is_float_16_32());
 347       assert(ir->type->is_uint_16_32());
 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->is_int_16_32());
 369       break;
 370    case ir_unop_u642i:
 371       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 372       assert(ir->type->is_int_16_32());
 373       break;
 374    case ir_unop_i642u:
 375       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 376       assert(ir->type->is_uint_16_32());
 377       break;
 378    case ir_unop_u642u:
 379       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 380       assert(ir->type->is_uint_16_32());
 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->is_int_16_32());
 404       assert(ir->type->base_type == GLSL_TYPE_INT64);
 405       break;
 406    case ir_unop_u2i64:
 407       assert(ir->operands[0]->type->is_uint_16_32());
 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->is_int_16_32());
 424       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 425       break;
 426    case ir_unop_u2u64:
 427       assert(ir->operands[0]->type->is_uint_16_32());
 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_16_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_16_32());
 552       assert(ir->type->is_int_16_32());
 553       break;
 554
 555    case ir_unop_clz:
 556       assert(ir->operands[0]->type == ir->type);
 557       assert(ir->type->is_uint_16_32());
 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_i2i:
 594       assert(ir->operands[0]->type->is_int_16_32());
 595       assert(ir->type->is_int_16_32());
 596       assert(ir->type->base_type != ir->operands[0]->type->base_type);
 597       break;
 598    case ir_unop_u2u:
 599       assert(ir->operands[0]->type->is_uint_16_32());
 600       assert(ir->type->is_uint_16_32());
 601       assert(ir->type->base_type != ir->operands[0]->type->base_type);
 602       break;
 603    case ir_unop_i2imp:
 604       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT);
 605       assert(ir->type->base_type == GLSL_TYPE_INT16);
 606       break;
 607    case ir_unop_u2ump:
 608       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT);
 609       assert(ir->type->base_type == GLSL_TYPE_UINT16);
 610       break;
 611    case ir_unop_d2i:
 612       assert(ir->operands[0]->type->is_double());
 613       assert(ir->type->is_int_16_32());
 614       break;
 615    case ir_unop_i2d:
 616       assert(ir->operands[0]->type->is_int_16_32());
 617       assert(ir->type->is_double());
 618       break;
 619    case ir_unop_d2u:
 620       assert(ir->operands[0]->type->is_double());
 621       assert(ir->type->is_uint_16_32());
 622       break;
 623    case ir_unop_u2d:
 624       assert(ir->operands[0]->type->is_uint_16_32());
 625       assert(ir->type->is_double());
 626       break;
 627    case ir_unop_d2b:
 628       assert(ir->operands[0]->type->is_double());
 629       assert(ir->type->is_boolean());
 630       break;
 631
 632    case ir_unop_frexp_sig:
 633       assert(ir->operands[0]->type->is_float_16_32_64());
 634       assert(ir->type->is_double());
 635       break;
 636    case ir_unop_frexp_exp:
 637       assert(ir->operands[0]->type->is_float_16_32_64());
 638       assert(ir->type->is_int_16_32());
 639       break;
 640    case ir_unop_subroutine_to_int:
 641       assert(ir->operands[0]->type->base_type == GLSL_TYPE_SUBROUTINE);
 642       assert(ir->type->base_type == GLSL_TYPE_INT);
 643       break;
 644
 645    case ir_unop_atan:
 646       assert(ir->operands[0]->type->is_float_16_32_64());
 647       assert(ir->type == ir->operands[0]->type);
 648       break;
 649
 650    case ir_binop_add:
 651    case ir_binop_sub:
 652    case ir_binop_mul:
 653    case ir_binop_div:
 654    case ir_binop_mod:
 655    case ir_binop_min:
 656    case ir_binop_max:
 657    case ir_binop_pow:
 658       assert(ir->operands[0]->type->base_type ==
 659              ir->operands[1]->type->base_type);
 660
 661       if (ir->operation == ir_binop_mul &&
 662           (ir->type->base_type == GLSL_TYPE_UINT64 ||
 663            ir->type->base_type == GLSL_TYPE_INT64) &&
 664           (ir->operands[0]->type->is_int_16_32()||
 665            ir->operands[1]->type->is_int_16_32()||
 666            ir->operands[0]->type->is_uint_16_32() ||
 667            ir->operands[1]->type->is_uint_16_32())) {
 668          assert(ir->operands[0]->type == ir->operands[1]->type);
 669          break;
 670       }
 671
 672       if (ir->operands[0]->type->is_scalar())
 673          assert(ir->operands[1]->type == ir->type);
 674       else if (ir->operands[1]->type->is_scalar())
 675          assert(ir->operands[0]->type == ir->type);
 676       else if (ir->operands[0]->type->is_vector() &&
 677                ir->operands[1]->type->is_vector()) {
 678          assert(ir->operands[0]->type == ir->operands[1]->type);
 679          assert(ir->operands[0]->type == ir->type);
 680       }
 681       break;
 682
 683    case ir_binop_abs_sub:
 684       assert(ir->operands[0]->type == ir->operands[1]->type);
 685       assert(ir->operands[0]->type->is_integer_16_32_64());
 686       assert(ir->operands[0]->type->vector_elements ==
 687              ir->type->vector_elements);
 688       assert(ir->type->is_uint_16_32_64());
 689       break;
 690
 691    case ir_binop_add_sat:
 692    case ir_binop_sub_sat:
 693    case ir_binop_avg:
 694    case ir_binop_avg_round:
 695       assert(ir->type == ir->operands[0]->type);
 696       assert(ir->type == ir->operands[1]->type);
 697       assert(ir->type->is_integer_16_32_64());
 698       break;
 699
 700    case ir_binop_mul_32x16:
 701    case ir_binop_imul_high:
 702       assert(ir->type == ir->operands[0]->type);
 703       assert(ir->type == ir->operands[1]->type);
 704       assert(ir->type->is_integer_32());
 705       break;
 706
 707    case ir_binop_carry:
 708    case ir_binop_borrow:
 709       assert(ir->type == ir->operands[0]->type);
 710       assert(ir->type == ir->operands[1]->type);
 711       assert(ir->type->base_type == GLSL_TYPE_UINT);
 712       break;
 713
 714    case ir_binop_less:
 715    case ir_binop_gequal:
 716    case ir_binop_equal:
 717    case ir_binop_nequal:
 718       /* The semantics of the IR operators differ from the GLSL <, >, <=, >=,
 719        * ==, and != operators.  The IR operators perform a component-wise
 720        * comparison on scalar or vector types and return a boolean scalar or
 721        * vector type of the same size.
 722        */
 723       assert(ir->type->is_boolean());
 724       assert(ir->operands[0]->type == ir->operands[1]->type);
 725       assert(ir->operands[0]->type->is_vector()
 726              || ir->operands[0]->type->is_scalar());
 727       assert(ir->operands[0]->type->vector_elements
 728              == ir->type->vector_elements);
 729       break;
 730
 731    case ir_binop_all_equal:
 732    case ir_binop_any_nequal:
 733       /* GLSL == and != operate on scalars, vectors, matrices and arrays, and
 734        * return a scalar boolean.  The IR matches that.
 735        */
 736       assert(ir->type == glsl_type::bool_type);
 737       assert(ir->operands[0]->type == ir->operands[1]->type);
 738       break;
 739
 740    case ir_binop_lshift:
 741    case ir_binop_rshift:
 742       assert(ir->operands[0]->type->is_integer_16_32_64() &&
 743              ir->operands[1]->type->is_integer_16_32());
 744       if (ir->operands[0]->type->is_scalar()) {
 745           assert(ir->operands[1]->type->is_scalar());
 746       }
 747       if (ir->operands[0]->type->is_vector() &&
 748           ir->operands[1]->type->is_vector()) {
 749           assert(ir->operands[0]->type->components() ==
 750                  ir->operands[1]->type->components());
 751       }
 752       assert(ir->type == ir->operands[0]->type);
 753       break;
 754
 755    case ir_binop_bit_and:
 756    case ir_binop_bit_xor:
 757    case ir_binop_bit_or:
 758        assert(ir->operands[0]->type->base_type ==
 759               ir->operands[1]->type->base_type);
 760        assert(ir->type->is_integer_16_32_64());
 761        if (ir->operands[0]->type->is_vector() &&
 762            ir->operands[1]->type->is_vector()) {
 763            assert(ir->operands[0]->type->vector_elements ==
 764                   ir->operands[1]->type->vector_elements);
 765        }
 766        break;
 767
 768    case ir_binop_logic_and:
 769    case ir_binop_logic_xor:
 770    case ir_binop_logic_or:
 771       assert(ir->type->is_boolean());
 772       assert(ir->operands[0]->type->is_boolean());
 773       assert(ir->operands[1]->type->is_boolean());
 774       break;
 775
 776    case ir_binop_dot:
 777       assert(ir->type == glsl_type::float_type ||
 778              ir->type == glsl_type::double_type ||
 779              ir->type == glsl_type::float16_t_type);
 780       assert(ir->operands[0]->type->is_float_16_32_64());
 781       assert(ir->operands[0]->type->is_vector());
 782       assert(ir->operands[0]->type == ir->operands[1]->type);
 783       break;
 784
 785    case ir_binop_ubo_load:
 786       assert(ir->operands[0]->type == glsl_type::uint_type);
 787
 788       assert(ir->operands[1]->type == glsl_type::uint_type);
 789       break;
 790
 791    case ir_binop_ldexp:
 792       assert(ir->operands[0]->type == ir->type);
 793       assert(ir->operands[0]->type->is_float_16_32_64());
 794       assert(ir->operands[1]->type->is_int_16_32());
 795       assert(ir->operands[0]->type->components() ==
 796              ir->operands[1]->type->components());
 797       break;
 798
 799    case ir_binop_vector_extract:
 800       assert(ir->operands[0]->type->is_vector());
 801       assert(ir->operands[1]->type->is_scalar()
 802              && ir->operands[1]->type->is_integer_16_32());
 803       break;
 804
 805    case ir_binop_interpolate_at_offset:
 806       assert(ir->operands[0]->type == ir->type);
 807       assert(ir->operands[0]->type->is_float_16_32());
 808       assert(ir->operands[1]->type->components() == 2);
 809       assert(ir->operands[1]->type->is_float_16_32());
 810       break;
 811
 812    case ir_binop_interpolate_at_sample:
 813       assert(ir->operands[0]->type == ir->type);
 814       assert(ir->operands[0]->type->is_float_16_32());
 815       assert(ir->operands[1]->type == glsl_type::int_type ||
 816              ir->operands[1]->type == glsl_type::int16_t_type);
 817       break;
 818
 819    case ir_binop_atan2:
 820       assert(ir->operands[0]->type->is_float_16_32_64());
 821       assert(ir->operands[1]->type == ir->operands[0]->type);
 822       assert(ir->type == ir->operands[0]->type);
 823       break;
 824
 825    case ir_triop_fma:
 826       assert(ir->type->is_float_16_32_64());
 827       assert(ir->type == ir->operands[0]->type);
 828       assert(ir->type == ir->operands[1]->type);
 829       assert(ir->type == ir->operands[2]->type);
 830       break;
 831
 832    case ir_triop_lrp:
 833       assert(ir->operands[0]->type->is_float_16_32_64());
 834       assert(ir->operands[0]->type == ir->operands[1]->type);
 835       assert(ir->operands[2]->type == ir->operands[0]->type ||
 836              ir->operands[2]->type == glsl_type::float_type ||
 837              ir->operands[2]->type == glsl_type::double_type ||
 838              ir->operands[2]->type == glsl_type::float16_t_type);
 839       break;
 840
 841    case ir_triop_csel:
 842       assert(ir->operands[0]->type->is_boolean());
 843       assert(ir->type->vector_elements == ir->operands[0]->type->vector_elements);
 844       assert(ir->type == ir->operands[1]->type);
 845       assert(ir->type == ir->operands[2]->type);
 846       break;
 847
 848    case ir_triop_bitfield_extract:
 849       assert(ir->type->is_integer_16_32());
 850       assert(ir->operands[0]->type == ir->type);
 851       assert(ir->operands[1]->type == ir->type);
 852       assert(ir->operands[2]->type == ir->type);
 853       break;
 854
 855    case ir_triop_vector_insert:
 856       assert(ir->operands[0]->type->is_vector());
 857       assert(ir->operands[1]->type->is_scalar());
 858       assert(ir->operands[0]->type->base_type == ir->operands[1]->type->base_type);
 859       assert(ir->operands[2]->type->is_scalar()
 860              && ir->operands[2]->type->is_integer_16_32());
 861       assert(ir->type == ir->operands[0]->type);
 862       break;
 863
 864    case ir_quadop_bitfield_insert:
 865       assert(ir->type->is_integer_16_32());
 866       assert(ir->operands[0]->type == ir->type);
 867       assert(ir->operands[1]->type == ir->type);
 868       assert(ir->operands[2]->type == ir->type);
 869       assert(ir->operands[3]->type == ir->type);
 870       break;
 871
 872    case ir_quadop_vector:
 873       /* The vector operator collects some number of scalars and generates a
 874        * vector from them.
 875        *
 876        *  - All of the operands must be scalar.
 877        *  - Number of operands must matche the size of the resulting vector.
 878        *  - Base type of the operands must match the base type of the result.
 879        */
 880       assert(ir->type->is_vector());
 881       switch (ir->type->vector_elements) {
 882       case 2:
 883          assert(ir->operands[0]->type->is_scalar());
 884          assert(ir->operands[0]->type->base_type == ir->type->base_type);
 885          assert(ir->operands[1]->type->is_scalar());
 886          assert(ir->operands[1]->type->base_type == ir->type->base_type);
 887          assert(ir->operands[2] == NULL);
 888          assert(ir->operands[3] == NULL);
 889          break;
 890       case 3:
 891          assert(ir->operands[0]->type->is_scalar());
 892          assert(ir->operands[0]->type->base_type == ir->type->base_type);
 893          assert(ir->operands[1]->type->is_scalar());
 894          assert(ir->operands[1]->type->base_type == ir->type->base_type);
 895          assert(ir->operands[2]->type->is_scalar());
 896          assert(ir->operands[2]->type->base_type == ir->type->base_type);
 897          assert(ir->operands[3] == NULL);
 898          break;
 899       case 4:
 900          assert(ir->operands[0]->type->is_scalar());
 901          assert(ir->operands[0]->type->base_type == ir->type->base_type);
 902          assert(ir->operands[1]->type->is_scalar());
 903          assert(ir->operands[1]->type->base_type == ir->type->base_type);
 904          assert(ir->operands[2]->type->is_scalar());
 905          assert(ir->operands[2]->type->base_type == ir->type->base_type);
 906          assert(ir->operands[3]->type->is_scalar());
 907          assert(ir->operands[3]->type->base_type == ir->type->base_type);
 908          break;
 909       default:
 910          /* The is_vector assertion above should prevent execution from ever
 911           * getting here.
 912           */
 913          assert(!"Should not get here.");
 914          break;
 915       }
 916    }
 917
 918    return visit_continue;
 919 }
 920
 921 ir_visitor_status
 922 ir_validate::visit_leave(ir_swizzle *ir)
 923 {
 924    unsigned int chans[4] = {ir->mask.x, ir->mask.y, ir->mask.z, ir->mask.w};
 925
 926    for (unsigned int i = 0; i < ir->type->vector_elements; i++) {
 927       if (chans[i] >= ir->val->type->vector_elements) {
 928          printf("ir_swizzle @ %p specifies a channel not present "
 929                 "in the value.\n", (void *) ir);
 930          ir->print();
 931          abort();
 932       }
 933    }
 934
 935    return visit_continue;
 936 }
 937
 938 ir_visitor_status
 939 ir_validate::visit(ir_variable *ir)
 940 {
 941    /* An ir_variable is the one thing that can (and will) appear multiple times
 942     * in an IR tree.  It is added to the hashtable so that it can be used
 943     * in the ir_dereference_variable handler to ensure that a variable is
 944     * declared before it is dereferenced.
 945     */
 946    if (ir->name && ir->is_name_ralloced())
 947       assert(ralloc_parent(ir->name) == ir);
 948
 949    _mesa_set_add(ir_set, ir);
 950
 951    /* If a variable is an array, verify that the maximum array index is in
 952     * bounds.  There was once an error in AST-to-HIR conversion that set this
 953     * to be out of bounds.
 954     */
 955    if (ir->type->array_size() > 0) {
 956       if (ir->data.max_array_access >= (int)ir->type->length) {
 957          printf("ir_variable has maximum access out of bounds (%d vs %d)\n",
 958                 ir->data.max_array_access, ir->type->length - 1);
 959          ir->print();
 960          abort();
 961       }
 962    }
 963
 964    /* If a variable is an interface block (or an array of interface blocks),
 965     * verify that the maximum array index for each interface member is in
 966     * bounds.
 967     */
 968    if (ir->is_interface_instance()) {
 969       const glsl_struct_field *fields =
 970          ir->get_interface_type()->fields.structure;
 971       for (unsigned i = 0; i < ir->get_interface_type()->length; i++) {
 972          if (fields[i].type->array_size() > 0 &&
 973              !fields[i].implicit_sized_array) {
 974             const int *const max_ifc_array_access =
 975                ir->get_max_ifc_array_access();
 976
 977             assert(max_ifc_array_access != NULL);
 978
 979             if (max_ifc_array_access[i] >= (int)fields[i].type->length) {
 980                printf("ir_variable has maximum access out of bounds for "
 981                       "field %s (%d vs %d)\n", fields[i].name,
 982                       max_ifc_array_access[i], fields[i].type->length);
 983                ir->print();
 984                abort();
 985             }
 986          }
 987       }
 988    }
 989
 990    if (ir->constant_initializer != NULL && !ir->data.has_initializer) {
 991       printf("ir_variable didn't have an initializer, but has a constant "
 992              "initializer value.\n");
 993       ir->print();
 994       abort();
 995    }
 996
 997    if (ir->data.mode == ir_var_uniform
 998        && is_gl_identifier(ir->name)
 999        && ir->get_state_slots() == NULL) {
1000       printf("built-in uniform has no state\n");
1001       ir->print();
1002       abort();
1003    }
1004
1005    return visit_continue;
1006 }
1007
1008 ir_visitor_status
1009 ir_validate::visit_enter(ir_assignment *ir)
1010 {
1011    const ir_dereference *const lhs = ir->lhs;
1012    if (lhs->type->is_scalar() || lhs->type->is_vector()) {
1013       if (ir->write_mask == 0) {
1014          printf("Assignment LHS is %s, but write mask is 0:\n",
1015                 lhs->type->is_scalar() ? "scalar" : "vector");
1016          ir->print();
1017          abort();
1018       }
1019
1020       int lhs_components = 0;
1021       for (int i = 0; i < 4; i++) {
1022          if (ir->write_mask & (1 << i))
1023             lhs_components++;
1024       }
1025
1026       if (lhs_components != ir->rhs->type->vector_elements) {
1027          printf("Assignment count of LHS write mask channels enabled not\n"
1028                 "matching RHS vector size (%d LHS, %d RHS).\n",
1029                 lhs_components, ir->rhs->type->vector_elements);
1030          ir->print();
1031          abort();
1032       }
1033    }
1034
1035    this->validate_ir(ir, this->data_enter);
1036
1037    return visit_continue;
1038 }
1039
1040 ir_visitor_status
1041 ir_validate::visit_enter(ir_call *ir)
1042 {
1043    ir_function_signature *const callee = ir->callee;
1044
1045    if (callee->ir_type != ir_type_function_signature) {
1046       printf("IR called by ir_call is not ir_function_signature!\n");
1047       abort();
1048    }
1049
1050    if (ir->return_deref) {
1051       if (ir->return_deref->type != callee->return_type) {
1052          printf("callee type %s does not match return storage type %s\n",
1053                 callee->return_type->name, ir->return_deref->type->name);
1054          abort();
1055       }
1056    } else if (callee->return_type != glsl_type::void_type) {
1057       printf("ir_call has non-void callee but no return storage\n");
1058       abort();
1059    }
1060
1061    const exec_node *formal_param_node = callee->parameters.get_head_raw();
1062    const exec_node *actual_param_node = ir->actual_parameters.get_head_raw();
1063    while (true) {
1064       if (formal_param_node->is_tail_sentinel()
1065           != actual_param_node->is_tail_sentinel()) {
1066          printf("ir_call has the wrong number of parameters:\n");
1067          goto dump_ir;
1068       }
1069       if (formal_param_node->is_tail_sentinel()) {
1070          break;
1071       }
1072       const ir_variable *formal_param
1073          = (const ir_variable *) formal_param_node;
1074       const ir_rvalue *actual_param
1075          = (const ir_rvalue *) actual_param_node;
1076       if (formal_param->type != actual_param->type) {
1077          printf("ir_call parameter type mismatch:\n");
1078          goto dump_ir;
1079       }
1080       if (formal_param->data.mode == ir_var_function_out
1081           || formal_param->data.mode == ir_var_function_inout) {
1082          if (!actual_param->is_lvalue()) {
1083             printf("ir_call out/inout parameters must be lvalues:\n");
1084             goto dump_ir;
1085          }
1086       }
1087       formal_param_node = formal_param_node->next;
1088       actual_param_node = actual_param_node->next;
1089    }
1090
1091    return visit_continue;
1092
1093 dump_ir:
1094    ir->print();
1095    printf("callee:\n");
1096    callee->print();
1097    abort();
1098    return visit_stop;
1099 }
1100
1101 void
1102 ir_validate::validate_ir(ir_instruction *ir, void *data)
1103 {
1104    struct set *ir_set = (struct set *) data;
1105
1106    if (_mesa_set_search(ir_set, ir)) {
1107       printf("Instruction node present twice in ir tree:\n");
1108       ir->print();
1109       printf("\n");
1110       abort();
1111    }
1112    _mesa_set_add(ir_set, ir);
1113 }
1114
1115 static void
1116 check_node_type(ir_instruction *ir, void *data)
1117 {
1118    (void) data;
1119
1120    if (ir->ir_type >= ir_type_max) {
1121       printf("Instruction node with unset type\n");
1122       ir->print(); printf("\n");
1123    }
1124    ir_rvalue *value = ir->as_rvalue();
1125    if (value != NULL)
1126       assert(value->type != glsl_type::error_type);
1127 }
1128
1129 void
1130 validate_ir_tree(exec_list *instructions)
1131 {
1132    /* We shouldn't have any reason to validate IR in a release build,
1133     * and it's half composed of assert()s anyway which wouldn't do
1134     * anything.
1135     */
1136 #ifndef DEBUG
1137    if (!env_var_as_boolean("GLSL_VALIDATE", false))
1138       return;
1139 #endif
1140    ir_validate v;
1141
1142    v.run(instructions);
1143
1144    foreach_in_list(ir_instruction, ir, instructions) {
1145       visit_tree(ir, check_node_type, NULL);
1146    }
1147 }