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_16_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->is_int_16_32_64() ||
 263              ir->operands[0]->type->is_float_16_32_64());
 264       assert(ir->type == ir->operands[0]->type);
 265       break;
 266
 267    case ir_unop_rcp:
 268    case ir_unop_rsq:
 269    case ir_unop_sqrt:
 270       assert(ir->type->is_float_16_32_64());
 271       assert(ir->type == ir->operands[0]->type);
 272       break;
 273
 274    case ir_unop_exp:
 275    case ir_unop_log:
 276    case ir_unop_exp2:
 277    case ir_unop_log2:
 278    case ir_unop_saturate:
 279       assert(ir->operands[0]->type->is_float_16_32());
 280       assert(ir->type == ir->operands[0]->type);
 281       break;
 282
 283    case ir_unop_f2i:
 284       assert(ir->operands[0]->type->is_float_16_32());
 285       assert(ir->type->is_int_16_32());
 286       break;
 287    case ir_unop_f2u:
 288       assert(ir->operands[0]->type->is_float_16_32());
 289       assert(ir->type->is_uint_16_32());
 290       break;
 291    case ir_unop_i2f:
 292       assert(ir->operands[0]->type->is_int_16_32());
 293       assert(ir->type->is_float_16_32());
 294       break;
 295    case ir_unop_f2b:
 296       assert(ir->operands[0]->type->is_float_16_32());
 297       assert(ir->type->is_boolean());
 298       break;
 299    case ir_unop_f162b:
 300       assert(ir->operands[0]->type->base_type ==
 301              GLSL_TYPE_FLOAT16);
 302       assert(ir->type->is_boolean());
 303       break;
 304    case ir_unop_b2f:
 305       assert(ir->operands[0]->type->is_boolean());
 306       assert(ir->type->is_float_16_32());
 307       break;
 308    case ir_unop_b2f16:
 309       assert(ir->operands[0]->type->is_boolean());
 310       assert(ir->type->base_type == GLSL_TYPE_FLOAT16);
 311       break;
 312    case ir_unop_i2b:
 313       assert(ir->operands[0]->type->is_int_16_32());
 314       assert(ir->type->is_boolean());
 315       break;
 316    case ir_unop_b2i:
 317       assert(ir->operands[0]->type->is_boolean());
 318       assert(ir->type->is_int_16_32());
 319       break;
 320    case ir_unop_u2f:
 321       assert(ir->operands[0]->type->is_uint_16_32());
 322       assert(ir->type->is_float_16_32());
 323       break;
 324    case ir_unop_i2u:
 325       assert(ir->operands[0]->type->is_int_16_32());
 326       assert(ir->type->is_uint_16_32());
 327       break;
 328    case ir_unop_u2i:
 329       assert(ir->operands[0]->type->is_uint_16_32());
 330       assert(ir->type->is_int_16_32());
 331       break;
 332    case ir_unop_bitcast_i2f:
 333       assert(ir->operands[0]->type->is_int_16_32());
 334       assert(ir->type->is_float_16_32());
 335       break;
 336    case ir_unop_bitcast_f2i:
 337       assert(ir->operands[0]->type->is_float_16_32());
 338       assert(ir->type->is_int_16_32());
 339       break;
 340    case ir_unop_bitcast_u2f:
 341       assert(ir->operands[0]->type->is_uint_16_32());
 342       assert(ir->type->is_float_16_32());
 343       break;
 344    case ir_unop_bitcast_f2u:
 345       assert(ir->operands[0]->type->is_float_16_32());
 346       assert(ir->type->is_uint_16_32());
 347       break;
 348
 349    case ir_unop_bitcast_u642d:
 350       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 351       assert(ir->type->is_double());
 352       break;
 353    case ir_unop_bitcast_i642d:
 354       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 355       assert(ir->type->is_double());
 356       break;
 357    case ir_unop_bitcast_d2u64:
 358       assert(ir->operands[0]->type->is_double());
 359       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 360       break;
 361    case ir_unop_bitcast_d2i64:
 362       assert(ir->operands[0]->type->is_double());
 363       assert(ir->type->base_type == GLSL_TYPE_INT64);
 364       break;
 365    case ir_unop_i642i:
 366       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 367       assert(ir->type->is_int_16_32());
 368       break;
 369    case ir_unop_u642i:
 370       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 371       assert(ir->type->is_int_16_32());
 372       break;
 373    case ir_unop_i642u:
 374       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 375       assert(ir->type->is_uint_16_32());
 376       break;
 377    case ir_unop_u642u:
 378       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 379       assert(ir->type->is_uint_16_32());
 380       break;
 381    case ir_unop_i642b:
 382       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 383       assert(ir->type->is_boolean());
 384       break;
 385    case ir_unop_i642f:
 386       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 387       assert(ir->type->is_float());
 388       break;
 389    case ir_unop_u642f:
 390       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 391       assert(ir->type->is_float());
 392       break;
 393    case ir_unop_i642d:
 394       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 395       assert(ir->type->is_double());
 396       break;
 397    case ir_unop_u642d:
 398       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 399       assert(ir->type->is_double());
 400       break;
 401    case ir_unop_i2i64:
 402       assert(ir->operands[0]->type->is_int_16_32());
 403       assert(ir->type->base_type == GLSL_TYPE_INT64);
 404       break;
 405    case ir_unop_u2i64:
 406       assert(ir->operands[0]->type->is_uint_16_32());
 407       assert(ir->type->base_type == GLSL_TYPE_INT64);
 408       break;
 409    case ir_unop_b2i64:
 410       assert(ir->operands[0]->type->is_boolean());
 411       assert(ir->type->base_type == GLSL_TYPE_INT64);
 412       break;
 413    case ir_unop_f2i64:
 414       assert(ir->operands[0]->type->is_float());
 415       assert(ir->type->base_type == GLSL_TYPE_INT64);
 416       break;
 417    case ir_unop_d2i64:
 418       assert(ir->operands[0]->type->is_double());
 419       assert(ir->type->base_type == GLSL_TYPE_INT64);
 420       break;
 421    case ir_unop_i2u64:
 422       assert(ir->operands[0]->type->is_int_16_32());
 423       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 424       break;
 425    case ir_unop_u2u64:
 426       assert(ir->operands[0]->type->is_uint_16_32());
 427       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 428       break;
 429    case ir_unop_f2u64:
 430       assert(ir->operands[0]->type->is_float());
 431       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 432       break;
 433    case ir_unop_d2u64:
 434       assert(ir->operands[0]->type->is_double());
 435       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 436       break;
 437    case ir_unop_u642i64:
 438       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT64);
 439       assert(ir->type->base_type == GLSL_TYPE_INT64);
 440       break;
 441    case ir_unop_i642u64:
 442       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT64);
 443       assert(ir->type->base_type == GLSL_TYPE_UINT64);
 444       break;
 445    case ir_unop_trunc:
 446    case ir_unop_round_even:
 447    case ir_unop_ceil:
 448    case ir_unop_floor:
 449    case ir_unop_fract:
 450       assert(ir->operands[0]->type->is_float_16_32_64());
 451       assert(ir->operands[0]->type == ir->type);
 452       break;
 453    case ir_unop_sin:
 454    case ir_unop_cos:
 455    case ir_unop_dFdx:
 456    case ir_unop_dFdx_coarse:
 457    case ir_unop_dFdx_fine:
 458    case ir_unop_dFdy:
 459    case ir_unop_dFdy_coarse:
 460    case ir_unop_dFdy_fine:
 461       assert(ir->operands[0]->type->is_float_16_32());
 462       assert(ir->operands[0]->type == ir->type);
 463       break;
 464
 465    case ir_unop_pack_snorm_2x16:
 466    case ir_unop_pack_unorm_2x16:
 467    case ir_unop_pack_half_2x16:
 468       assert(ir->type == glsl_type::uint_type);
 469       assert(ir->operands[0]->type == glsl_type::vec2_type);
 470       break;
 471
 472    case ir_unop_pack_snorm_4x8:
 473    case ir_unop_pack_unorm_4x8:
 474       assert(ir->type == glsl_type::uint_type);
 475       assert(ir->operands[0]->type == glsl_type::vec4_type);
 476       break;
 477
 478    case ir_unop_pack_double_2x32:
 479       assert(ir->type == glsl_type::double_type);
 480       assert(ir->operands[0]->type == glsl_type::uvec2_type);
 481       break;
 482
 483    case ir_unop_pack_int_2x32:
 484       assert(ir->type == glsl_type::int64_t_type);
 485       assert(ir->operands[0]->type == glsl_type::ivec2_type);
 486       break;
 487
 488    case ir_unop_pack_uint_2x32:
 489       assert(ir->type == glsl_type::uint64_t_type);
 490       assert(ir->operands[0]->type == glsl_type::uvec2_type);
 491       break;
 492
 493    case ir_unop_pack_sampler_2x32:
 494       assert(ir->type->is_sampler());
 495       assert(ir->operands[0]->type == glsl_type::uvec2_type);
 496       break;
 497
 498    case ir_unop_pack_image_2x32:
 499       assert(ir->type->is_image());
 500       assert(ir->operands[0]->type == glsl_type::uvec2_type);
 501       break;
 502
 503    case ir_unop_unpack_snorm_2x16:
 504    case ir_unop_unpack_unorm_2x16:
 505    case ir_unop_unpack_half_2x16:
 506       assert(ir->type == glsl_type::vec2_type);
 507       assert(ir->operands[0]->type == glsl_type::uint_type);
 508       break;
 509
 510    case ir_unop_unpack_snorm_4x8:
 511    case ir_unop_unpack_unorm_4x8:
 512       assert(ir->type == glsl_type::vec4_type);
 513       assert(ir->operands[0]->type == glsl_type::uint_type);
 514       break;
 515
 516    case ir_unop_unpack_double_2x32:
 517       assert(ir->type == glsl_type::uvec2_type);
 518       assert(ir->operands[0]->type == glsl_type::double_type);
 519       break;
 520
 521    case ir_unop_unpack_int_2x32:
 522       assert(ir->type == glsl_type::ivec2_type);
 523       assert(ir->operands[0]->type == glsl_type::int64_t_type);
 524       break;
 525
 526    case ir_unop_unpack_uint_2x32:
 527       assert(ir->type == glsl_type::uvec2_type);
 528       assert(ir->operands[0]->type == glsl_type::uint64_t_type);
 529       break;
 530
 531    case ir_unop_unpack_sampler_2x32:
 532       assert(ir->type == glsl_type::uvec2_type);
 533       assert(ir->operands[0]->type->is_sampler());
 534       break;
 535
 536    case ir_unop_unpack_image_2x32:
 537       assert(ir->type == glsl_type::uvec2_type);
 538       assert(ir->operands[0]->type->is_image());
 539       break;
 540
 541    case ir_unop_bitfield_reverse:
 542       assert(ir->operands[0]->type == ir->type);
 543       assert(ir->type->is_integer_16_32());
 544       break;
 545
 546    case ir_unop_bit_count:
 547    case ir_unop_find_msb:
 548    case ir_unop_find_lsb:
 549       assert(ir->operands[0]->type->vector_elements == ir->type->vector_elements);
 550       assert(ir->operands[0]->type->is_integer_16_32());
 551       assert(ir->type->is_int_16_32());
 552       break;
 553
 554    case ir_unop_clz:
 555       assert(ir->operands[0]->type == ir->type);
 556       assert(ir->type->is_uint_16_32());
 557       break;
 558
 559    case ir_unop_interpolate_at_centroid:
 560       assert(ir->operands[0]->type == ir->type);
 561       assert(ir->operands[0]->type->is_float_16_32());
 562       break;
 563
 564    case ir_unop_get_buffer_size:
 565       assert(ir->type == glsl_type::int_type);
 566       assert(ir->operands[0]->type == glsl_type::uint_type);
 567       break;
 568
 569    case ir_unop_ssbo_unsized_array_length:
 570       assert(ir->type == glsl_type::int_type);
 571       assert(ir->operands[0]->type->is_array());
 572       assert(ir->operands[0]->type->is_unsized_array());
 573       break;
 574
 575    case ir_unop_d2f:
 576       assert(ir->operands[0]->type->is_double());
 577       assert(ir->type->is_float());
 578       break;
 579    case ir_unop_f2d:
 580       assert(ir->operands[0]->type->is_float());
 581       assert(ir->type->is_double());
 582       break;
 583    case ir_unop_f162f:
 584       assert(ir->operands[0]->type->base_type == GLSL_TYPE_FLOAT16);
 585       assert(ir->type->is_float());
 586       break;
 587    case ir_unop_f2f16:
 588    case ir_unop_f2fmp:
 589       assert(ir->operands[0]->type->is_float());
 590       assert(ir->type->base_type == GLSL_TYPE_FLOAT16);
 591       break;
 592    case ir_unop_i2i:
 593       assert(ir->operands[0]->type->is_int_16_32());
 594       assert(ir->type->is_int_16_32());
 595       assert(ir->type->base_type != ir->operands[0]->type->base_type);
 596       break;
 597    case ir_unop_u2u:
 598       assert(ir->operands[0]->type->is_uint_16_32());
 599       assert(ir->type->is_uint_16_32());
 600       assert(ir->type->base_type != ir->operands[0]->type->base_type);
 601       break;
 602    case ir_unop_i2imp:
 603       assert(ir->operands[0]->type->base_type == GLSL_TYPE_INT);
 604       assert(ir->type->base_type == GLSL_TYPE_INT16);
 605       break;
 606    case ir_unop_u2ump:
 607       assert(ir->operands[0]->type->base_type == GLSL_TYPE_UINT);
 608       assert(ir->type->base_type == GLSL_TYPE_UINT16);
 609       break;
 610    case ir_unop_d2i:
 611       assert(ir->operands[0]->type->is_double());
 612       assert(ir->type->is_int_16_32());
 613       break;
 614    case ir_unop_i2d:
 615       assert(ir->operands[0]->type->is_int_16_32());
 616       assert(ir->type->is_double());
 617       break;
 618    case ir_unop_d2u:
 619       assert(ir->operands[0]->type->is_double());
 620       assert(ir->type->is_uint_16_32());
 621       break;
 622    case ir_unop_u2d:
 623       assert(ir->operands[0]->type->is_uint_16_32());
 624       assert(ir->type->is_double());
 625       break;
 626    case ir_unop_d2b:
 627       assert(ir->operands[0]->type->is_double());
 628       assert(ir->type->is_boolean());
 629       break;
 630
 631    case ir_unop_frexp_sig:
 632       assert(ir->operands[0]->type->is_float_16_32_64());
 633       assert(ir->type->is_double());
 634       break;
 635    case ir_unop_frexp_exp:
 636       assert(ir->operands[0]->type->is_float_16_32_64());
 637       assert(ir->type->is_int_16_32());
 638       break;
 639    case ir_unop_subroutine_to_int:
 640       assert(ir->operands[0]->type->base_type == GLSL_TYPE_SUBROUTINE);
 641       assert(ir->type->base_type == GLSL_TYPE_INT);
 642       break;
 643
 644    case ir_unop_atan:
 645       assert(ir->operands[0]->type->is_float_16_32_64());
 646       assert(ir->type == ir->operands[0]->type);
 647       break;
 648
 649    case ir_binop_add:
 650    case ir_binop_sub:
 651    case ir_binop_mul:
 652    case ir_binop_div:
 653    case ir_binop_mod:
 654    case ir_binop_min:
 655    case ir_binop_max:
 656    case ir_binop_pow:
 657       assert(ir->operands[0]->type->base_type ==
 658              ir->operands[1]->type->base_type);
 659
 660       if (ir->operation == ir_binop_mul &&
 661           (ir->type->base_type == GLSL_TYPE_UINT64 ||
 662            ir->type->base_type == GLSL_TYPE_INT64) &&
 663           (ir->operands[0]->type->is_int_16_32()||
 664            ir->operands[1]->type->is_int_16_32()||
 665            ir->operands[0]->type->is_uint_16_32() ||
 666            ir->operands[1]->type->is_uint_16_32())) {
 667          assert(ir->operands[0]->type == ir->operands[1]->type);
 668          break;
 669       }
 670
 671       if (ir->operands[0]->type->is_scalar())
 672          assert(ir->operands[1]->type == ir->type);
 673       else if (ir->operands[1]->type->is_scalar())
 674          assert(ir->operands[0]->type == ir->type);
 675       else if (ir->operands[0]->type->is_vector() &&
 676                ir->operands[1]->type->is_vector()) {
 677          assert(ir->operands[0]->type == ir->operands[1]->type);
 678          assert(ir->operands[0]->type == ir->type);
 679       }
 680       break;
 681
 682    case ir_binop_abs_sub:
 683       assert(ir->operands[0]->type == ir->operands[1]->type);
 684       assert(ir->operands[0]->type->is_integer_16_32_64());
 685       assert(ir->operands[0]->type->vector_elements ==
 686              ir->type->vector_elements);
 687       assert(ir->type->is_uint_16_32_64());
 688       break;
 689
 690    case ir_binop_add_sat:
 691    case ir_binop_sub_sat:
 692    case ir_binop_avg:
 693    case ir_binop_avg_round:
 694       assert(ir->type == ir->operands[0]->type);
 695       assert(ir->type == ir->operands[1]->type);
 696       assert(ir->type->is_integer_16_32_64());
 697       break;
 698
 699    case ir_binop_mul_32x16:
 700    case ir_binop_imul_high:
 701       assert(ir->type == ir->operands[0]->type);
 702       assert(ir->type == ir->operands[1]->type);
 703       assert(ir->type->is_integer_32());
 704       break;
 705
 706    case ir_binop_carry:
 707    case ir_binop_borrow:
 708       assert(ir->type == ir->operands[0]->type);
 709       assert(ir->type == ir->operands[1]->type);
 710       assert(ir->type->base_type == GLSL_TYPE_UINT);
 711       break;
 712
 713    case ir_binop_less:
 714    case ir_binop_gequal:
 715    case ir_binop_equal:
 716    case ir_binop_nequal:
 717       /* The semantics of the IR operators differ from the GLSL <, >, <=, >=,
 718        * ==, and != operators.  The IR operators perform a component-wise
 719        * comparison on scalar or vector types and return a boolean scalar or
 720        * vector type of the same size.
 721        */
 722       assert(ir->type->is_boolean());
 723       assert(ir->operands[0]->type == ir->operands[1]->type);
 724       assert(ir->operands[0]->type->is_vector()
 725              || ir->operands[0]->type->is_scalar());
 726       assert(ir->operands[0]->type->vector_elements
 727              == ir->type->vector_elements);
 728       break;
 729
 730    case ir_binop_all_equal:
 731    case ir_binop_any_nequal:
 732       /* GLSL == and != operate on scalars, vectors, matrices and arrays, and
 733        * return a scalar boolean.  The IR matches that.
 734        */
 735       assert(ir->type == glsl_type::bool_type);
 736       assert(ir->operands[0]->type == ir->operands[1]->type);
 737       break;
 738
 739    case ir_binop_lshift:
 740    case ir_binop_rshift:
 741       assert(ir->operands[0]->type->is_integer_16_32_64() &&
 742              ir->operands[1]->type->is_integer_16_32());
 743       if (ir->operands[0]->type->is_scalar()) {
 744           assert(ir->operands[1]->type->is_scalar());
 745       }
 746       if (ir->operands[0]->type->is_vector() &&
 747           ir->operands[1]->type->is_vector()) {
 748           assert(ir->operands[0]->type->components() ==
 749                  ir->operands[1]->type->components());
 750       }
 751       assert(ir->type == ir->operands[0]->type);
 752       break;
 753
 754    case ir_binop_bit_and:
 755    case ir_binop_bit_xor:
 756    case ir_binop_bit_or:
 757        assert(ir->operands[0]->type->base_type ==
 758               ir->operands[1]->type->base_type);
 759        assert(ir->type->is_integer_16_32_64());
 760        if (ir->operands[0]->type->is_vector() &&
 761            ir->operands[1]->type->is_vector()) {
 762            assert(ir->operands[0]->type->vector_elements ==
 763                   ir->operands[1]->type->vector_elements);
 764        }
 765        break;
 766
 767    case ir_binop_logic_and:
 768    case ir_binop_logic_xor:
 769    case ir_binop_logic_or:
 770       assert(ir->type->is_boolean());
 771       assert(ir->operands[0]->type->is_boolean());
 772       assert(ir->operands[1]->type->is_boolean());
 773       break;
 774
 775    case ir_binop_dot:
 776       assert(ir->type == glsl_type::float_type ||
 777              ir->type == glsl_type::double_type ||
 778              ir->type == glsl_type::float16_t_type);
 779       assert(ir->operands[0]->type->is_float_16_32_64());
 780       assert(ir->operands[0]->type->is_vector());
 781       assert(ir->operands[0]->type == ir->operands[1]->type);
 782       break;
 783
 784    case ir_binop_ubo_load:
 785       assert(ir->operands[0]->type == glsl_type::uint_type);
 786
 787       assert(ir->operands[1]->type == glsl_type::uint_type);
 788       break;
 789
 790    case ir_binop_ldexp:
 791       assert(ir->operands[0]->type == ir->type);
 792       assert(ir->operands[0]->type->is_float_16_32_64());
 793       assert(ir->operands[1]->type->is_int_16_32());
 794       assert(ir->operands[0]->type->components() ==
 795              ir->operands[1]->type->components());
 796       break;
 797
 798    case ir_binop_vector_extract:
 799       assert(ir->operands[0]->type->is_vector());
 800       assert(ir->operands[1]->type->is_scalar()
 801              && ir->operands[1]->type->is_integer_16_32());
 802       break;
 803
 804    case ir_binop_interpolate_at_offset:
 805       assert(ir->operands[0]->type == ir->type);
 806       assert(ir->operands[0]->type->is_float_16_32());
 807       assert(ir->operands[1]->type->components() == 2);
 808       assert(ir->operands[1]->type->is_float_16_32());
 809       break;
 810
 811    case ir_binop_interpolate_at_sample:
 812       assert(ir->operands[0]->type == ir->type);
 813       assert(ir->operands[0]->type->is_float_16_32());
 814       assert(ir->operands[1]->type == glsl_type::int_type ||
 815              ir->operands[1]->type == glsl_type::int16_t_type);
 816       break;
 817
 818    case ir_binop_atan2:
 819       assert(ir->operands[0]->type->is_float_16_32_64());
 820       assert(ir->operands[1]->type == ir->operands[0]->type);
 821       assert(ir->type == ir->operands[0]->type);
 822       break;
 823
 824    case ir_triop_fma:
 825       assert(ir->type->is_float_16_32_64());
 826       assert(ir->type == ir->operands[0]->type);
 827       assert(ir->type == ir->operands[1]->type);
 828       assert(ir->type == ir->operands[2]->type);
 829       break;
 830
 831    case ir_triop_lrp:
 832       assert(ir->operands[0]->type->is_float_16_32_64());
 833       assert(ir->operands[0]->type == ir->operands[1]->type);
 834       assert(ir->operands[2]->type == ir->operands[0]->type ||
 835              ir->operands[2]->type == glsl_type::float_type ||
 836              ir->operands[2]->type == glsl_type::double_type ||
 837              ir->operands[2]->type == glsl_type::float16_t_type);
 838       break;
 839
 840    case ir_triop_csel:
 841       assert(ir->operands[0]->type->is_boolean());
 842       assert(ir->type->vector_elements == ir->operands[0]->type->vector_elements);
 843       assert(ir->type == ir->operands[1]->type);
 844       assert(ir->type == ir->operands[2]->type);
 845       break;
 846
 847    case ir_triop_bitfield_extract:
 848       assert(ir->type->is_integer_16_32());
 849       assert(ir->operands[0]->type == ir->type);
 850       assert(ir->operands[1]->type == ir->type);
 851       assert(ir->operands[2]->type == ir->type);
 852       break;
 853
 854    case ir_triop_vector_insert:
 855       assert(ir->operands[0]->type->is_vector());
 856       assert(ir->operands[1]->type->is_scalar());
 857       assert(ir->operands[0]->type->base_type == ir->operands[1]->type->base_type);
 858       assert(ir->operands[2]->type->is_scalar()
 859              && ir->operands[2]->type->is_integer_16_32());
 860       assert(ir->type == ir->operands[0]->type);
 861       break;
 862
 863    case ir_quadop_bitfield_insert:
 864       assert(ir->type->is_integer_16_32());
 865       assert(ir->operands[0]->type == ir->type);
 866       assert(ir->operands[1]->type == ir->type);
 867       assert(ir->operands[2]->type == ir->type);
 868       assert(ir->operands[3]->type == ir->type);
 869       break;
 870
 871    case ir_quadop_vector:
 872       /* The vector operator collects some number of scalars and generates a
 873        * vector from them.
 874        *
 875        *  - All of the operands must be scalar.
 876        *  - Number of operands must matche the size of the resulting vector.
 877        *  - Base type of the operands must match the base type of the result.
 878        */
 879       assert(ir->type->is_vector());
 880       switch (ir->type->vector_elements) {
 881       case 2:
 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] == NULL);
 887          assert(ir->operands[3] == NULL);
 888          break;
 889       case 3:
 890          assert(ir->operands[0]->type->is_scalar());
 891          assert(ir->operands[0]->type->base_type == ir->type->base_type);
 892          assert(ir->operands[1]->type->is_scalar());
 893          assert(ir->operands[1]->type->base_type == ir->type->base_type);
 894          assert(ir->operands[2]->type->is_scalar());
 895          assert(ir->operands[2]->type->base_type == ir->type->base_type);
 896          assert(ir->operands[3] == NULL);
 897          break;
 898       case 4:
 899          assert(ir->operands[0]->type->is_scalar());
 900          assert(ir->operands[0]->type->base_type == ir->type->base_type);
 901          assert(ir->operands[1]->type->is_scalar());
 902          assert(ir->operands[1]->type->base_type == ir->type->base_type);
 903          assert(ir->operands[2]->type->is_scalar());
 904          assert(ir->operands[2]->type->base_type == ir->type->base_type);
 905          assert(ir->operands[3]->type->is_scalar());
 906          assert(ir->operands[3]->type->base_type == ir->type->base_type);
 907          break;
 908       default:
 909          /* The is_vector assertion above should prevent execution from ever
 910           * getting here.
 911           */
 912          assert(!"Should not get here.");
 913          break;
 914       }
 915    }
 916
 917    return visit_continue;
 918 }
 919
 920 ir_visitor_status
 921 ir_validate::visit_leave(ir_swizzle *ir)
 922 {
 923    unsigned int chans[4] = {ir->mask.x, ir->mask.y, ir->mask.z, ir->mask.w};
 924
 925    for (unsigned int i = 0; i < ir->type->vector_elements; i++) {
 926       if (chans[i] >= ir->val->type->vector_elements) {
 927          printf("ir_swizzle @ %p specifies a channel not present "
 928                 "in the value.\n", (void *) ir);
 929          ir->print();
 930          abort();
 931       }
 932    }
 933
 934    return visit_continue;
 935 }
 936
 937 ir_visitor_status
 938 ir_validate::visit(ir_variable *ir)
 939 {
 940    /* An ir_variable is the one thing that can (and will) appear multiple times
 941     * in an IR tree.  It is added to the hashtable so that it can be used
 942     * in the ir_dereference_variable handler to ensure that a variable is
 943     * declared before it is dereferenced.
 944     */
 945    if (ir->name && ir->is_name_ralloced())
 946       assert(ralloc_parent(ir->name) == ir);
 947
 948    _mesa_set_add(ir_set, ir);
 949
 950    /* If a variable is an array, verify that the maximum array index is in
 951     * bounds.  There was once an error in AST-to-HIR conversion that set this
 952     * to be out of bounds.
 953     */
 954    if (ir->type->array_size() > 0) {
 955       if (ir->data.max_array_access >= (int)ir->type->length) {
 956          printf("ir_variable has maximum access out of bounds (%d vs %d)\n",
 957                 ir->data.max_array_access, ir->type->length - 1);
 958          ir->print();
 959          abort();
 960       }
 961    }
 962
 963    /* If a variable is an interface block (or an array of interface blocks),
 964     * verify that the maximum array index for each interface member is in
 965     * bounds.
 966     */
 967    if (ir->is_interface_instance()) {
 968       const glsl_struct_field *fields =
 969          ir->get_interface_type()->fields.structure;
 970       for (unsigned i = 0; i < ir->get_interface_type()->length; i++) {
 971          if (fields[i].type->array_size() > 0 &&
 972              !fields[i].implicit_sized_array) {
 973             const int *const max_ifc_array_access =
 974                ir->get_max_ifc_array_access();
 975
 976             assert(max_ifc_array_access != NULL);
 977
 978             if (max_ifc_array_access[i] >= (int)fields[i].type->length) {
 979                printf("ir_variable has maximum access out of bounds for "
 980                       "field %s (%d vs %d)\n", fields[i].name,
 981                       max_ifc_array_access[i], fields[i].type->length);
 982                ir->print();
 983                abort();
 984             }
 985          }
 986       }
 987    }
 988
 989    if (ir->constant_initializer != NULL && !ir->data.has_initializer) {
 990       printf("ir_variable didn't have an initializer, but has a constant "
 991              "initializer value.\n");
 992       ir->print();
 993       abort();
 994    }
 995
 996    if (ir->data.mode == ir_var_uniform
 997        && is_gl_identifier(ir->name)
 998        && ir->get_state_slots() == NULL) {
 999       printf("built-in uniform has no state\n");
1000       ir->print();
1001       abort();
1002    }
1003
1004    return visit_continue;
1005 }
1006
1007 ir_visitor_status
1008 ir_validate::visit_enter(ir_assignment *ir)
1009 {
1010    const ir_dereference *const lhs = ir->lhs;
1011    if (lhs->type->is_scalar() || lhs->type->is_vector()) {
1012       if (ir->write_mask == 0) {
1013          printf("Assignment LHS is %s, but write mask is 0:\n",
1014                 lhs->type->is_scalar() ? "scalar" : "vector");
1015          ir->print();
1016          abort();
1017       }
1018
1019       int lhs_components = 0;
1020       for (int i = 0; i < 4; i++) {
1021          if (ir->write_mask & (1 << i))
1022             lhs_components++;
1023       }
1024
1025       if (lhs_components != ir->rhs->type->vector_elements) {
1026          printf("Assignment count of LHS write mask channels enabled not\n"
1027                 "matching RHS vector size (%d LHS, %d RHS).\n",
1028                 lhs_components, ir->rhs->type->vector_elements);
1029          ir->print();
1030          abort();
1031       }
1032    }
1033
1034    this->validate_ir(ir, this->data_enter);
1035
1036    return visit_continue;
1037 }
1038
1039 ir_visitor_status
1040 ir_validate::visit_enter(ir_call *ir)
1041 {
1042    ir_function_signature *const callee = ir->callee;
1043
1044    if (callee->ir_type != ir_type_function_signature) {
1045       printf("IR called by ir_call is not ir_function_signature!\n");
1046       abort();
1047    }
1048
1049    if (ir->return_deref) {
1050       if (ir->return_deref->type != callee->return_type) {
1051          printf("callee type %s does not match return storage type %s\n",
1052                 callee->return_type->name, ir->return_deref->type->name);
1053          abort();
1054       }
1055    } else if (callee->return_type != glsl_type::void_type) {
1056       printf("ir_call has non-void callee but no return storage\n");
1057       abort();
1058    }
1059
1060    const exec_node *formal_param_node = callee->parameters.get_head_raw();
1061    const exec_node *actual_param_node = ir->actual_parameters.get_head_raw();
1062    while (true) {
1063       if (formal_param_node->is_tail_sentinel()
1064           != actual_param_node->is_tail_sentinel()) {
1065          printf("ir_call has the wrong number of parameters:\n");
1066          goto dump_ir;
1067       }
1068       if (formal_param_node->is_tail_sentinel()) {
1069          break;
1070       }
1071       const ir_variable *formal_param
1072          = (const ir_variable *) formal_param_node;
1073       const ir_rvalue *actual_param
1074          = (const ir_rvalue *) actual_param_node;
1075       if (formal_param->type != actual_param->type) {
1076          printf("ir_call parameter type mismatch:\n");
1077          goto dump_ir;
1078       }
1079       if (formal_param->data.mode == ir_var_function_out
1080           || formal_param->data.mode == ir_var_function_inout) {
1081          if (!actual_param->is_lvalue()) {
1082             printf("ir_call out/inout parameters must be lvalues:\n");
1083             goto dump_ir;
1084          }
1085       }
1086       formal_param_node = formal_param_node->next;
1087       actual_param_node = actual_param_node->next;
1088    }
1089
1090    return visit_continue;
1091
1092 dump_ir:
1093    ir->print();
1094    printf("callee:\n");
1095    callee->print();
1096    abort();
1097    return visit_stop;
1098 }
1099
1100 void
1101 ir_validate::validate_ir(ir_instruction *ir, void *data)
1102 {
1103    struct set *ir_set = (struct set *) data;
1104
1105    if (_mesa_set_search(ir_set, ir)) {
1106       printf("Instruction node present twice in ir tree:\n");
1107       ir->print();
1108       printf("\n");
1109       abort();
1110    }
1111    _mesa_set_add(ir_set, ir);
1112 }
1113
1114 #ifdef DEBUG
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 #endif
1129
1130 void
1131 validate_ir_tree(exec_list *instructions)
1132 {
1133    /* We shouldn't have any reason to validate IR in a release build,
1134     * and it's half composed of assert()s anyway which wouldn't do
1135     * anything.
1136     */
1137 #ifdef DEBUG
1138    ir_validate v;
1139
1140    v.run(instructions);
1141
1142    foreach_in_list(ir_instruction, ir, instructions) {
1143       visit_tree(ir, check_node_type, NULL);
1144    }
1145 #endif
1146 }