src/glsl/nir/nir_print.c

   1 /*
   2  * Copyright © 2014 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 DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Connor Abbott (cwabbott0@gmail.com)
  25  *
  26  */
  27
  28 #include "nir.h"
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31
  32 static void
  33 print_tabs(unsigned num_tabs, FILE *fp)
  34 {
  35    for (unsigned i = 0; i < num_tabs; i++)
  36       fprintf(fp, "\t");
  37 }
  38
  39 typedef struct {
  40    /** map from nir_variable -> printable name */
  41    struct hash_table *ht;
  42
  43    /** set of names used so far for nir_variables */
  44    struct set *syms;
  45
  46    /* an index used to make new non-conflicting names */
  47    unsigned index;
  48 } print_var_state;
  49
  50 static void
  51 print_register(nir_register *reg, FILE *fp)
  52 {
  53    if (reg->name != NULL)
  54       fprintf(fp, "/* %s */ ", reg->name);
  55    if (reg->is_global)
  56       fprintf(fp, "gr%u", reg->index);
  57    else
  58       fprintf(fp, "r%u", reg->index);
  59 }
  60
  61 static const char *sizes[] = { "error", "vec1", "vec2", "vec3", "vec4" };
  62
  63 static void
  64 print_register_decl(nir_register *reg, FILE *fp)
  65 {
  66    fprintf(fp, "decl_reg %s ", sizes[reg->num_components]);
  67    if (reg->is_packed)
  68       fprintf(fp, "(packed) ");
  69    print_register(reg, fp);
  70    if (reg->num_array_elems != 0)
  71       fprintf(fp, "[%u]", reg->num_array_elems);
  72    fprintf(fp, "\n");
  73 }
  74
  75 static void
  76 print_ssa_def(nir_ssa_def *def, FILE *fp)
  77 {
  78    if (def->name != NULL)
  79       fprintf(fp, "/* %s */ ", def->name);
  80    fprintf(fp, "%s ssa_%u", sizes[def->num_components], def->index);
  81 }
  82
  83 static void
  84 print_ssa_use(nir_ssa_def *def, FILE *fp)
  85 {
  86    if (def->name != NULL)
  87       fprintf(fp, "/* %s */ ", def->name);
  88    fprintf(fp, "ssa_%u", def->index);
  89 }
  90
  91 static void print_src(nir_src *src, FILE *fp);
  92
  93 static void
  94 print_reg_src(nir_reg_src *src, FILE *fp)
  95 {
  96    print_register(src->reg, fp);
  97    if (src->reg->num_array_elems != 0) {
  98       fprintf(fp, "[%u", src->base_offset);
  99       if (src->indirect != NULL) {
 100          fprintf(fp, " + ");
 101          print_src(src->indirect, fp);
 102       }
 103       fprintf(fp, "]");
 104    }
 105 }
 106
 107 static void
 108 print_reg_dest(nir_reg_dest *dest, FILE *fp)
 109 {
 110    print_register(dest->reg, fp);
 111    if (dest->reg->num_array_elems != 0) {
 112       fprintf(fp, "[%u", dest->base_offset);
 113       if (dest->indirect != NULL) {
 114          fprintf(fp, " + ");
 115          print_src(dest->indirect, fp);
 116       }
 117       fprintf(fp, "]");
 118    }
 119 }
 120
 121 static void
 122 print_src(nir_src *src, FILE *fp)
 123 {
 124    if (src->is_ssa)
 125       print_ssa_use(src->ssa, fp);
 126    else
 127       print_reg_src(&src->reg, fp);
 128 }
 129
 130 static void
 131 print_dest(nir_dest *dest, FILE *fp)
 132 {
 133    if (dest->is_ssa)
 134       print_ssa_def(&dest->ssa, fp);
 135    else
 136       print_reg_dest(&dest->reg, fp);
 137 }
 138
 139 static void
 140 print_alu_src(nir_alu_src *src, FILE *fp)
 141 {
 142    if (src->negate)
 143       fprintf(fp, "-");
 144    if (src->abs)
 145       fprintf(fp, "abs(");
 146
 147    print_src(&src->src, fp);
 148
 149    if (src->swizzle[0] != 0 ||
 150        src->swizzle[1] != 1 ||
 151        src->swizzle[2] != 2 ||
 152        src->swizzle[3] != 3) {
 153       fprintf(fp, ".");
 154       for (unsigned i = 0; i < 4; i++)
 155          fprintf(fp, "%c", "xyzw"[src->swizzle[i]]);
 156    }
 157
 158    if (src->abs)
 159       fprintf(fp, ")");
 160 }
 161
 162 static void
 163 print_alu_dest(nir_alu_dest *dest, FILE *fp)
 164 {
 165    /* we're going to print the saturate modifier later, after the opcode */
 166
 167    print_dest(&dest->dest, fp);
 168
 169    if (!dest->dest.is_ssa &&
 170        dest->write_mask != (1 << dest->dest.reg.reg->num_components) - 1) {
 171       fprintf(fp, ".");
 172       for (unsigned i = 0; i < 4; i++)
 173          if ((dest->write_mask >> i) & 1)
 174             fprintf(fp, "%c", "xyzw"[i]);
 175    }
 176 }
 177
 178 static void
 179 print_alu_instr(nir_alu_instr *instr, FILE *fp)
 180 {
 181    print_alu_dest(&instr->dest, fp);
 182
 183    fprintf(fp, " = %s", nir_op_infos[instr->op].name);
 184    if (instr->dest.saturate)
 185       fprintf(fp, ".sat");
 186    fprintf(fp, " ");
 187
 188    for (unsigned i = 0; i < nir_op_infos[instr->op].num_inputs; i++) {
 189       if (i != 0)
 190          fprintf(fp, ", ");
 191
 192       print_alu_src(&instr->src[i], fp);
 193    }
 194 }
 195
 196 static void
 197 print_var_decl(nir_variable *var, print_var_state *state, FILE *fp)
 198 {
 199    fprintf(fp, "decl_var ");
 200
 201    const char *const cent = (var->data.centroid) ? "centroid " : "";
 202    const char *const samp = (var->data.sample) ? "sample " : "";
 203    const char *const inv = (var->data.invariant) ? "invariant " : "";
 204    const char *const mode[] = { "shader_in ", "shader_out ", "", "",
 205                                 "uniform ", "system " };
 206    const char *const interp[] = { "", "smooth", "flat", "noperspective" };
 207
 208    fprintf(fp, "%s%s%s%s%s ",
 209       cent, samp, inv, mode[var->data.mode], interp[var->data.interpolation]);
 210
 211    glsl_print_type(var->type, fp);
 212
 213    struct set_entry *entry =
 214       _mesa_set_search(state->syms, _mesa_hash_string(var->name), var->name);
 215
 216    char *name;
 217
 218    if (entry != NULL) {
 219       /* we have a collision with another name, append an @ + a unique index */
 220       name = ralloc_asprintf(state->syms, "%s@%u", var->name, state->index++);
 221    } else {
 222       name = var->name;
 223    }
 224
 225    fprintf(fp, " %s", name);
 226
 227    if (var->data.mode == nir_var_shader_in ||
 228        var->data.mode == nir_var_shader_out ||
 229        var->data.mode == nir_var_uniform) {
 230       fprintf(fp, " (%u)", var->data.driver_location);
 231    }
 232
 233    fprintf(fp, "\n");
 234
 235    _mesa_set_add(state->syms, _mesa_hash_string(name), name);
 236    _mesa_hash_table_insert(state->ht, var, name);
 237 }
 238
 239 static void
 240 print_var(nir_variable *var, print_var_state *state, FILE *fp)
 241 {
 242    struct hash_entry *entry = _mesa_hash_table_search(state->ht, var);
 243
 244    assert(entry != NULL);
 245
 246    fprintf(fp, "%s", (char *) entry->data);
 247 }
 248
 249 static void
 250 print_deref_var(nir_deref_var *deref, print_var_state *state, FILE *fp)
 251 {
 252    print_var(deref->var, state, fp);
 253 }
 254
 255 static void
 256 print_deref_array(nir_deref_array *deref, print_var_state *state, FILE *fp)
 257 {
 258    fprintf(fp, "[");
 259    switch (deref->deref_array_type) {
 260    case nir_deref_array_type_direct:
 261       fprintf(fp, "%u", deref->base_offset);
 262       break;
 263    case nir_deref_array_type_indirect:
 264       if (deref->base_offset != 0)
 265          fprintf(fp, "%u + ", deref->base_offset);
 266       print_src(&deref->indirect, fp);
 267       break;
 268    case nir_deref_array_type_wildcard:
 269       fprintf(fp, "*");
 270       break;
 271    }
 272    fprintf(fp, "]");
 273 }
 274
 275 static void
 276 print_deref_struct(nir_deref_struct *deref, const struct glsl_type *parent_type,
 277                    print_var_state *state, FILE *fp)
 278 {
 279    fprintf(fp, ".%s", glsl_get_struct_elem_name(parent_type, deref->index));
 280 }
 281
 282 static void
 283 print_deref(nir_deref_var *deref, print_var_state *state, FILE *fp)
 284 {
 285    nir_deref *tail = &deref->deref;
 286    nir_deref *pretail = NULL;
 287    while (tail != NULL) {
 288       switch (tail->deref_type) {
 289       case nir_deref_type_var:
 290          assert(pretail == NULL);
 291          assert(tail == &deref->deref);
 292          print_deref_var(deref, state, fp);
 293          break;
 294
 295       case nir_deref_type_array:
 296          assert(pretail != NULL);
 297          print_deref_array(nir_deref_as_array(tail), state, fp);
 298          break;
 299
 300       case nir_deref_type_struct:
 301          assert(pretail != NULL);
 302          print_deref_struct(nir_deref_as_struct(tail),
 303                             pretail->type, state, fp);
 304          break;
 305
 306       default:
 307          unreachable("Invalid deref type");
 308       }
 309
 310       pretail = tail;
 311       tail = pretail->child;
 312    }
 313 }
 314
 315 static void
 316 print_intrinsic_instr(nir_intrinsic_instr *instr, print_var_state *state,
 317                       FILE *fp)
 318 {
 319    unsigned num_srcs = nir_intrinsic_infos[instr->intrinsic].num_srcs;
 320
 321    if (nir_intrinsic_infos[instr->intrinsic].has_dest) {
 322       print_dest(&instr->dest, fp);
 323       fprintf(fp, " = ");
 324    }
 325
 326    fprintf(fp, "intrinsic %s (", nir_intrinsic_infos[instr->intrinsic].name);
 327
 328    for (unsigned i = 0; i < num_srcs; i++) {
 329       if (i != 0)
 330          fprintf(fp, ", ");
 331
 332       print_src(&instr->src[i], fp);
 333    }
 334
 335    fprintf(fp, ") (");
 336
 337    unsigned num_vars = nir_intrinsic_infos[instr->intrinsic].num_variables;
 338
 339    for (unsigned i = 0; i < num_vars; i++) {
 340       if (i != 0)
 341          fprintf(fp, ", ");
 342
 343       print_deref(instr->variables[i], state, fp);
 344    }
 345
 346    fprintf(fp, ") (");
 347
 348    unsigned num_indices = nir_intrinsic_infos[instr->intrinsic].num_indices;
 349
 350    for (unsigned i = 0; i < num_indices; i++) {
 351       if (i != 0)
 352          fprintf(fp, ", ");
 353
 354       fprintf(fp, "%u", instr->const_index[i]);
 355    }
 356
 357    fprintf(fp, ")");
 358 }
 359
 360 static void
 361 print_tex_instr(nir_tex_instr *instr, print_var_state *state, FILE *fp)
 362 {
 363    print_dest(&instr->dest, fp);
 364
 365    fprintf(fp, " = ");
 366
 367    switch (instr->op) {
 368    case nir_texop_tex:
 369       fprintf(fp, "tex ");
 370       break;
 371    case nir_texop_txb:
 372       fprintf(fp, "txb ");
 373       break;
 374    case nir_texop_txl:
 375       fprintf(fp, "txl ");
 376       break;
 377    case nir_texop_txd:
 378       fprintf(fp, "txd ");
 379       break;
 380    case nir_texop_txf:
 381       fprintf(fp, "txf ");
 382       break;
 383    case nir_texop_txf_ms:
 384       fprintf(fp, "txf_ms ");
 385       break;
 386    case nir_texop_txs:
 387       fprintf(fp, "txs ");
 388       break;
 389    case nir_texop_lod:
 390       fprintf(fp, "lod ");
 391       break;
 392    case nir_texop_tg4:
 393       fprintf(fp, "tg4 ");
 394       break;
 395    case nir_texop_query_levels:
 396       fprintf(fp, "query_levels ");
 397       break;
 398
 399    default:
 400       unreachable("Invalid texture operation");
 401       break;
 402    }
 403
 404    for (unsigned i = 0; i < instr->num_srcs; i++) {
 405       print_src(&instr->src[i].src, fp);
 406
 407       fprintf(fp, " ");
 408
 409       switch(instr->src[i].src_type) {
 410       case nir_tex_src_coord:
 411          fprintf(fp, "(coord)");
 412          break;
 413       case nir_tex_src_projector:
 414          fprintf(fp, "(projector)");
 415          break;
 416       case nir_tex_src_comparitor:
 417          fprintf(fp, "(comparitor)");
 418          break;
 419       case nir_tex_src_offset:
 420          fprintf(fp, "(offset)");
 421          break;
 422       case nir_tex_src_bias:
 423          fprintf(fp, "(bias)");
 424          break;
 425       case nir_tex_src_lod:
 426          fprintf(fp, "(lod)");
 427          break;
 428       case nir_tex_src_ms_index:
 429          fprintf(fp, "(ms_index)");
 430          break;
 431       case nir_tex_src_ddx:
 432          fprintf(fp, "(ddx)");
 433          break;
 434       case nir_tex_src_ddy:
 435          fprintf(fp, "(ddy)");
 436          break;
 437       case nir_tex_src_sampler_offset:
 438          fprintf(fp, "(sampler_offset)");
 439          break;
 440
 441       default:
 442          unreachable("Invalid texture source type");
 443          break;
 444       }
 445
 446       fprintf(fp, ", ");
 447    }
 448
 449    bool has_nonzero_offset = false;
 450    for (unsigned i = 0; i < 4; i++) {
 451       if (instr->const_offset[i] != 0) {
 452          has_nonzero_offset = true;
 453          break;
 454       }
 455    }
 456
 457    if (has_nonzero_offset) {
 458       fprintf(fp, "[%i %i %i %i] (offset), ",
 459               instr->const_offset[0], instr->const_offset[1],
 460               instr->const_offset[2], instr->const_offset[3]);
 461    }
 462
 463    if (instr->op == nir_texop_tg4) {
 464       fprintf(fp, "%u (gather_component), ", instr->component);
 465    }
 466
 467    if (instr->sampler) {
 468       print_deref(instr->sampler, state, fp);
 469    } else {
 470       fprintf(fp, "%u", instr->sampler_index);
 471    }
 472
 473    fprintf(fp, " (sampler)");
 474 }
 475
 476 static void
 477 print_call_instr(nir_call_instr *instr, print_var_state *state, FILE *fp)
 478 {
 479    fprintf(fp, "call %s ", instr->callee->function->name);
 480
 481    for (unsigned i = 0; i < instr->num_params; i++) {
 482       if (i != 0)
 483          fprintf(fp, ", ");
 484
 485       print_deref(instr->params[i], state, fp);
 486    }
 487
 488    if (instr->return_deref != NULL) {
 489       if (instr->num_params != 0)
 490          fprintf(fp, ", ");
 491       fprintf(fp, "returning ");
 492       print_deref(instr->return_deref, state, fp);
 493    }
 494 }
 495
 496 static void
 497 print_load_const_instr(nir_load_const_instr *instr, unsigned tabs, FILE *fp)
 498 {
 499    print_ssa_def(&instr->def, fp);
 500
 501    fprintf(fp, " = load_const (");
 502
 503    for (unsigned i = 0; i < instr->def.num_components; i++) {
 504       if (i != 0)
 505          fprintf(fp, ", ");
 506
 507       /*
 508        * we don't really know the type of the constant (if it will be used as a
 509        * float or an int), so just print the raw constant in hex for fidelity
 510        * and then print the float in a comment for readability.
 511        */
 512
 513       fprintf(fp, "0x%08x /* %f */", instr->value.u[i], instr->value.f[i]);
 514    }
 515 }
 516
 517 static void
 518 print_jump_instr(nir_jump_instr *instr, FILE *fp)
 519 {
 520    switch (instr->type) {
 521    case nir_jump_break:
 522       fprintf(fp, "break");
 523       break;
 524
 525    case nir_jump_continue:
 526       fprintf(fp, "continue");
 527       break;
 528
 529    case nir_jump_return:
 530       fprintf(fp, "return");
 531       break;
 532    }
 533 }
 534
 535 static void
 536 print_ssa_undef_instr(nir_ssa_undef_instr* instr, FILE *fp)
 537 {
 538    print_ssa_def(&instr->def, fp);
 539    fprintf(fp, " = undefined");
 540 }
 541
 542 static void
 543 print_phi_instr(nir_phi_instr *instr, FILE *fp)
 544 {
 545    print_dest(&instr->dest, fp);
 546    fprintf(fp, " = phi ");
 547    foreach_list_typed(nir_phi_src, src, node, &instr->srcs) {
 548       if (&src->node != exec_list_get_head(&instr->srcs))
 549          fprintf(fp, ", ");
 550
 551       fprintf(fp, "block_%u: ", src->pred->index);
 552       print_src(&src->src, fp);
 553    }
 554 }
 555
 556 static void
 557 print_parallel_copy_instr(nir_parallel_copy_instr *instr, FILE *fp)
 558 {
 559    nir_foreach_parallel_copy_entry(instr, entry) {
 560       if (&entry->node != exec_list_get_head(&instr->entries))
 561          fprintf(fp, "; ");
 562
 563       print_dest(&entry->dest, fp);
 564       fprintf(fp, " = ");
 565       print_src(&entry->src, fp);
 566    }
 567 }
 568
 569 static void
 570 print_instr(nir_instr *instr, print_var_state *state, unsigned tabs, FILE *fp)
 571 {
 572    print_tabs(tabs, fp);
 573
 574    switch (instr->type) {
 575    case nir_instr_type_alu:
 576       print_alu_instr(nir_instr_as_alu(instr), fp);
 577       break;
 578
 579    case nir_instr_type_call:
 580       print_call_instr(nir_instr_as_call(instr), state, fp);
 581       break;
 582
 583    case nir_instr_type_intrinsic:
 584       print_intrinsic_instr(nir_instr_as_intrinsic(instr), state, fp);
 585       break;
 586
 587    case nir_instr_type_tex:
 588       print_tex_instr(nir_instr_as_tex(instr), state, fp);
 589       break;
 590
 591    case nir_instr_type_load_const:
 592       print_load_const_instr(nir_instr_as_load_const(instr), tabs, fp);
 593       break;
 594
 595    case nir_instr_type_jump:
 596       print_jump_instr(nir_instr_as_jump(instr), fp);
 597       break;
 598
 599    case nir_instr_type_ssa_undef:
 600       print_ssa_undef_instr(nir_instr_as_ssa_undef(instr), fp);
 601       break;
 602
 603    case nir_instr_type_phi:
 604       print_phi_instr(nir_instr_as_phi(instr), fp);
 605       break;
 606
 607    case nir_instr_type_parallel_copy:
 608       print_parallel_copy_instr(nir_instr_as_parallel_copy(instr), fp);
 609       break;
 610
 611    default:
 612       unreachable("Invalid instruction type");
 613       break;
 614    }
 615
 616    fprintf(fp, "\n");
 617 }
 618
 619 static int
 620 compare_block_index(const void *p1, const void *p2)
 621 {
 622    const nir_block *block1 = *((const nir_block **) p1);
 623    const nir_block *block2 = *((const nir_block **) p2);
 624
 625    return (int) block1->index - (int) block2->index;
 626 }
 627
 628 static void print_cf_node(nir_cf_node *node, print_var_state *state,
 629                           unsigned tabs, FILE *fp);
 630
 631 static void
 632 print_block(nir_block *block, print_var_state *state, unsigned tabs, FILE *fp)
 633 {
 634    print_tabs(tabs, fp);
 635    fprintf(fp, "block block_%u:\n", block->index);
 636
 637    /* sort the predecessors by index so we consistently print the same thing */
 638
 639    nir_block **preds =
 640       malloc(block->predecessors->entries * sizeof(nir_block *));
 641
 642    struct set_entry *entry;
 643    unsigned i = 0;
 644    set_foreach(block->predecessors, entry) {
 645       preds[i++] = (nir_block *) entry->key;
 646    }
 647
 648    qsort(preds, block->predecessors->entries, sizeof(nir_block *),
 649          compare_block_index);
 650
 651    print_tabs(tabs, fp);
 652    fprintf(fp, "/* preds: ");
 653    for (unsigned i = 0; i < block->predecessors->entries; i++) {
 654       fprintf(fp, "block_%u ", preds[i]->index);
 655    }
 656    fprintf(fp, "*/\n");
 657
 658    free(preds);
 659
 660    nir_foreach_instr(block, instr) {
 661       print_instr(instr, state, tabs, fp);
 662    }
 663
 664    print_tabs(tabs, fp);
 665    fprintf(fp, "/* succs: ");
 666    for (unsigned i = 0; i < 2; i++)
 667       if (block->successors[i]) {
 668          fprintf(fp, "block_%u ", block->successors[i]->index);
 669       }
 670    fprintf(fp, "*/\n");
 671 }
 672
 673 static void
 674 print_if(nir_if *if_stmt, print_var_state *state, unsigned tabs, FILE *fp)
 675 {
 676    print_tabs(tabs, fp);
 677    fprintf(fp, "if ");
 678    print_src(&if_stmt->condition, fp);
 679    fprintf(fp, " {\n");
 680    foreach_list_typed(nir_cf_node, node, node, &if_stmt->then_list) {
 681       print_cf_node(node, state, tabs + 1, fp);
 682    }
 683    print_tabs(tabs, fp);
 684    fprintf(fp, "} else {\n");
 685    foreach_list_typed(nir_cf_node, node, node, &if_stmt->else_list) {
 686       print_cf_node(node, state, tabs + 1, fp);
 687    }
 688    print_tabs(tabs, fp);
 689    fprintf(fp, "}\n");
 690 }
 691
 692 static void
 693 print_loop(nir_loop *loop, print_var_state *state, unsigned tabs, FILE *fp)
 694 {
 695    print_tabs(tabs, fp);
 696    fprintf(fp, "loop {\n");
 697    foreach_list_typed(nir_cf_node, node, node, &loop->body) {
 698       print_cf_node(node, state, tabs + 1, fp);
 699    }
 700    print_tabs(tabs, fp);
 701    fprintf(fp, "}\n");
 702 }
 703
 704 static void
 705 print_cf_node(nir_cf_node *node, print_var_state *state, unsigned int tabs,
 706               FILE *fp)
 707 {
 708    switch (node->type) {
 709    case nir_cf_node_block:
 710       print_block(nir_cf_node_as_block(node), state, tabs, fp);
 711       break;
 712
 713    case nir_cf_node_if:
 714       print_if(nir_cf_node_as_if(node), state, tabs, fp);
 715       break;
 716
 717    case nir_cf_node_loop:
 718       print_loop(nir_cf_node_as_loop(node), state, tabs, fp);
 719       break;
 720
 721    default:
 722       unreachable("Invalid CFG node type");
 723    }
 724 }
 725
 726 static void
 727 print_function_impl(nir_function_impl *impl, print_var_state *state, FILE *fp)
 728 {
 729    fprintf(fp, "\nimpl %s ", impl->overload->function->name);
 730
 731    for (unsigned i = 0; i < impl->num_params; i++) {
 732       if (i != 0)
 733          fprintf(fp, ", ");
 734
 735       print_var(impl->params[i], state, fp);
 736    }
 737
 738    if (impl->return_var != NULL) {
 739       if (impl->num_params != 0)
 740          fprintf(fp, ", ");
 741       fprintf(fp, "returning ");
 742       print_var(impl->return_var, state, fp);
 743    }
 744
 745    fprintf(fp, "{\n");
 746
 747    foreach_list_typed(nir_variable, var, node, &impl->locals) {
 748       fprintf(fp, "\t");
 749       print_var_decl(var, state, fp);
 750    }
 751
 752    foreach_list_typed(nir_register, reg, node, &impl->registers) {
 753       fprintf(fp, "\t");
 754       print_register_decl(reg, fp);
 755    }
 756
 757    nir_index_blocks(impl);
 758
 759    foreach_list_typed(nir_cf_node, node, node, &impl->body) {
 760       print_cf_node(node, state, 1, fp);
 761    }
 762
 763    fprintf(fp, "\tblock block_%u:\n}\n\n", impl->end_block->index);
 764 }
 765
 766 static void
 767 print_function_overload(nir_function_overload *overload,
 768                         print_var_state *state, FILE *fp)
 769 {
 770    fprintf(fp, "decl_overload %s ", overload->function->name);
 771
 772    for (unsigned i = 0; i < overload->num_params; i++) {
 773       if (i != 0)
 774          fprintf(fp, ", ");
 775
 776       switch (overload->params[i].param_type) {
 777       case nir_parameter_in:
 778          fprintf(fp, "in ");
 779          break;
 780       case nir_parameter_out:
 781          fprintf(fp, "out ");
 782          break;
 783       case nir_parameter_inout:
 784          fprintf(fp, "inout ");
 785          break;
 786       default:
 787          unreachable("Invalid parameter type");
 788       }
 789
 790       glsl_print_type(overload->params[i].type, fp);
 791    }
 792
 793    if (overload->return_type != NULL) {
 794       if (overload->num_params != 0)
 795          fprintf(fp, ", ");
 796       fprintf(fp, "returning ");
 797       glsl_print_type(overload->return_type, fp);
 798    }
 799
 800    fprintf(fp, "\n");
 801
 802    if (overload->impl != NULL) {
 803       print_function_impl(overload->impl, state, fp);
 804       return;
 805    }
 806 }
 807
 808 static void
 809 print_function(nir_function *func, print_var_state *state, FILE *fp)
 810 {
 811    foreach_list_typed(nir_function_overload, overload, node, &func->overload_list) {
 812       print_function_overload(overload, state, fp);
 813    }
 814 }
 815
 816 static void
 817 init_print_state(print_var_state *state)
 818 {
 819    state->ht = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
 820                                        _mesa_key_pointer_equal);
 821    state->syms = _mesa_set_create(NULL, _mesa_key_string_equal);
 822    state->index = 0;
 823 }
 824
 825 static void
 826 destroy_print_state(print_var_state *state)
 827 {
 828    _mesa_hash_table_destroy(state->ht, NULL);
 829    _mesa_set_destroy(state->syms, NULL);
 830 }
 831
 832 void
 833 nir_print_shader(nir_shader *shader, FILE *fp)
 834 {
 835    print_var_state state;
 836    init_print_state(&state);
 837
 838    for (unsigned i = 0; i < shader->num_user_structures; i++) {
 839       glsl_print_struct(shader->user_structures[i], fp);
 840    }
 841
 842    struct hash_entry *entry;
 843
 844    hash_table_foreach(shader->uniforms, entry) {
 845       print_var_decl((nir_variable *) entry->data, &state, fp);
 846    }
 847
 848    hash_table_foreach(shader->inputs, entry) {
 849       print_var_decl((nir_variable *) entry->data, &state, fp);
 850    }
 851
 852    hash_table_foreach(shader->outputs, entry) {
 853       print_var_decl((nir_variable *) entry->data, &state, fp);
 854    }
 855
 856    foreach_list_typed(nir_variable, var, node, &shader->globals) {
 857       print_var_decl(var, &state, fp);
 858    }
 859
 860    foreach_list_typed(nir_variable, var, node, &shader->system_values) {
 861       print_var_decl(var, &state, fp);
 862    }
 863
 864    foreach_list_typed(nir_register, reg, node, &shader->registers) {
 865       print_register_decl(reg, fp);
 866    }
 867
 868    foreach_list_typed(nir_function, func, node, &shader->functions) {
 869       print_function(func, &state, fp);
 870    }
 871
 872    destroy_print_state(&state);
 873 }