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 = _mesa_set_search(state->syms, var->name);
 214
 215    char *name;
 216
 217    if (entry != NULL) {
 218       /* we have a collision with another name, append an @ + a unique index */
 219       name = ralloc_asprintf(state->syms, "%s@%u", var->name, state->index++);
 220    } else {
 221       name = var->name;
 222    }
 223
 224    fprintf(fp, " %s", name);
 225
 226    if (var->data.mode == nir_var_shader_in ||
 227        var->data.mode == nir_var_shader_out ||
 228        var->data.mode == nir_var_uniform) {
 229       fprintf(fp, " (%u)", var->data.driver_location);
 230    }
 231
 232    fprintf(fp, "\n");
 233
 234    _mesa_set_add(state->syms, name);
 235    _mesa_hash_table_insert(state->ht, var, name);
 236 }
 237
 238 static void
 239 print_var(nir_variable *var, print_var_state *state, FILE *fp)
 240 {
 241    struct hash_entry *entry = _mesa_hash_table_search(state->ht, var);
 242
 243    assert(entry != NULL);
 244
 245    fprintf(fp, "%s", (char *) entry->data);
 246 }
 247
 248 static void
 249 print_deref_var(nir_deref_var *deref, print_var_state *state, FILE *fp)
 250 {
 251    print_var(deref->var, state, fp);
 252 }
 253
 254 static void
 255 print_deref_array(nir_deref_array *deref, print_var_state *state, FILE *fp)
 256 {
 257    fprintf(fp, "[");
 258    switch (deref->deref_array_type) {
 259    case nir_deref_array_type_direct:
 260       fprintf(fp, "%u", deref->base_offset);
 261       break;
 262    case nir_deref_array_type_indirect:
 263       if (deref->base_offset != 0)
 264          fprintf(fp, "%u + ", deref->base_offset);
 265       print_src(&deref->indirect, fp);
 266       break;
 267    case nir_deref_array_type_wildcard:
 268       fprintf(fp, "*");
 269       break;
 270    }
 271    fprintf(fp, "]");
 272 }
 273
 274 static void
 275 print_deref_struct(nir_deref_struct *deref, const struct glsl_type *parent_type,
 276                    print_var_state *state, FILE *fp)
 277 {
 278    fprintf(fp, ".%s", glsl_get_struct_elem_name(parent_type, deref->index));
 279 }
 280
 281 static void
 282 print_deref(nir_deref_var *deref, print_var_state *state, FILE *fp)
 283 {
 284    nir_deref *tail = &deref->deref;
 285    nir_deref *pretail = NULL;
 286    while (tail != NULL) {
 287       switch (tail->deref_type) {
 288       case nir_deref_type_var:
 289          assert(pretail == NULL);
 290          assert(tail == &deref->deref);
 291          print_deref_var(deref, state, fp);
 292          break;
 293
 294       case nir_deref_type_array:
 295          assert(pretail != NULL);
 296          print_deref_array(nir_deref_as_array(tail), state, fp);
 297          break;
 298
 299       case nir_deref_type_struct:
 300          assert(pretail != NULL);
 301          print_deref_struct(nir_deref_as_struct(tail),
 302                             pretail->type, state, fp);
 303          break;
 304
 305       default:
 306          unreachable("Invalid deref type");
 307       }
 308
 309       pretail = tail;
 310       tail = pretail->child;
 311    }
 312 }
 313
 314 static void
 315 print_intrinsic_instr(nir_intrinsic_instr *instr, print_var_state *state,
 316                       FILE *fp)
 317 {
 318    unsigned num_srcs = nir_intrinsic_infos[instr->intrinsic].num_srcs;
 319
 320    if (nir_intrinsic_infos[instr->intrinsic].has_dest) {
 321       print_dest(&instr->dest, fp);
 322       fprintf(fp, " = ");
 323    }
 324
 325    fprintf(fp, "intrinsic %s (", nir_intrinsic_infos[instr->intrinsic].name);
 326
 327    for (unsigned i = 0; i < num_srcs; i++) {
 328       if (i != 0)
 329          fprintf(fp, ", ");
 330
 331       print_src(&instr->src[i], fp);
 332    }
 333
 334    fprintf(fp, ") (");
 335
 336    unsigned num_vars = nir_intrinsic_infos[instr->intrinsic].num_variables;
 337
 338    for (unsigned i = 0; i < num_vars; i++) {
 339       if (i != 0)
 340          fprintf(fp, ", ");
 341
 342       print_deref(instr->variables[i], state, fp);
 343    }
 344
 345    fprintf(fp, ") (");
 346
 347    unsigned num_indices = nir_intrinsic_infos[instr->intrinsic].num_indices;
 348
 349    for (unsigned i = 0; i < num_indices; i++) {
 350       if (i != 0)
 351          fprintf(fp, ", ");
 352
 353       fprintf(fp, "%u", instr->const_index[i]);
 354    }
 355
 356    fprintf(fp, ")");
 357 }
 358
 359 static void
 360 print_tex_instr(nir_tex_instr *instr, print_var_state *state, FILE *fp)
 361 {
 362    print_dest(&instr->dest, fp);
 363
 364    fprintf(fp, " = ");
 365
 366    switch (instr->op) {
 367    case nir_texop_tex:
 368       fprintf(fp, "tex ");
 369       break;
 370    case nir_texop_txb:
 371       fprintf(fp, "txb ");
 372       break;
 373    case nir_texop_txl:
 374       fprintf(fp, "txl ");
 375       break;
 376    case nir_texop_txd:
 377       fprintf(fp, "txd ");
 378       break;
 379    case nir_texop_txf:
 380       fprintf(fp, "txf ");
 381       break;
 382    case nir_texop_txf_ms:
 383       fprintf(fp, "txf_ms ");
 384       break;
 385    case nir_texop_txs:
 386       fprintf(fp, "txs ");
 387       break;
 388    case nir_texop_lod:
 389       fprintf(fp, "lod ");
 390       break;
 391    case nir_texop_tg4:
 392       fprintf(fp, "tg4 ");
 393       break;
 394    case nir_texop_query_levels:
 395       fprintf(fp, "query_levels ");
 396       break;
 397
 398    default:
 399       unreachable("Invalid texture operation");
 400       break;
 401    }
 402
 403    for (unsigned i = 0; i < instr->num_srcs; i++) {
 404       print_src(&instr->src[i].src, fp);
 405
 406       fprintf(fp, " ");
 407
 408       switch(instr->src[i].src_type) {
 409       case nir_tex_src_coord:
 410          fprintf(fp, "(coord)");
 411          break;
 412       case nir_tex_src_projector:
 413          fprintf(fp, "(projector)");
 414          break;
 415       case nir_tex_src_comparitor:
 416          fprintf(fp, "(comparitor)");
 417          break;
 418       case nir_tex_src_offset:
 419          fprintf(fp, "(offset)");
 420          break;
 421       case nir_tex_src_bias:
 422          fprintf(fp, "(bias)");
 423          break;
 424       case nir_tex_src_lod:
 425          fprintf(fp, "(lod)");
 426          break;
 427       case nir_tex_src_ms_index:
 428          fprintf(fp, "(ms_index)");
 429          break;
 430       case nir_tex_src_ddx:
 431          fprintf(fp, "(ddx)");
 432          break;
 433       case nir_tex_src_ddy:
 434          fprintf(fp, "(ddy)");
 435          break;
 436       case nir_tex_src_sampler_offset:
 437          fprintf(fp, "(sampler_offset)");
 438          break;
 439
 440       default:
 441          unreachable("Invalid texture source type");
 442          break;
 443       }
 444
 445       fprintf(fp, ", ");
 446    }
 447
 448    bool has_nonzero_offset = false;
 449    for (unsigned i = 0; i < 4; i++) {
 450       if (instr->const_offset[i] != 0) {
 451          has_nonzero_offset = true;
 452          break;
 453       }
 454    }
 455
 456    if (has_nonzero_offset) {
 457       fprintf(fp, "[%i %i %i %i] (offset), ",
 458               instr->const_offset[0], instr->const_offset[1],
 459               instr->const_offset[2], instr->const_offset[3]);
 460    }
 461
 462    if (instr->op == nir_texop_tg4) {
 463       fprintf(fp, "%u (gather_component), ", instr->component);
 464    }
 465
 466    if (instr->sampler) {
 467       print_deref(instr->sampler, state, fp);
 468    } else {
 469       fprintf(fp, "%u", instr->sampler_index);
 470    }
 471
 472    fprintf(fp, " (sampler)");
 473 }
 474
 475 static void
 476 print_call_instr(nir_call_instr *instr, print_var_state *state, FILE *fp)
 477 {
 478    fprintf(fp, "call %s ", instr->callee->function->name);
 479
 480    for (unsigned i = 0; i < instr->num_params; i++) {
 481       if (i != 0)
 482          fprintf(fp, ", ");
 483
 484       print_deref(instr->params[i], state, fp);
 485    }
 486
 487    if (instr->return_deref != NULL) {
 488       if (instr->num_params != 0)
 489          fprintf(fp, ", ");
 490       fprintf(fp, "returning ");
 491       print_deref(instr->return_deref, state, fp);
 492    }
 493 }
 494
 495 static void
 496 print_load_const_instr(nir_load_const_instr *instr, unsigned tabs, FILE *fp)
 497 {
 498    print_ssa_def(&instr->def, fp);
 499
 500    fprintf(fp, " = load_const (");
 501
 502    for (unsigned i = 0; i < instr->def.num_components; i++) {
 503       if (i != 0)
 504          fprintf(fp, ", ");
 505
 506       /*
 507        * we don't really know the type of the constant (if it will be used as a
 508        * float or an int), so just print the raw constant in hex for fidelity
 509        * and then print the float in a comment for readability.
 510        */
 511
 512       fprintf(fp, "0x%08x /* %f */", instr->value.u[i], instr->value.f[i]);
 513    }
 514 }
 515
 516 static void
 517 print_jump_instr(nir_jump_instr *instr, FILE *fp)
 518 {
 519    switch (instr->type) {
 520    case nir_jump_break:
 521       fprintf(fp, "break");
 522       break;
 523
 524    case nir_jump_continue:
 525       fprintf(fp, "continue");
 526       break;
 527
 528    case nir_jump_return:
 529       fprintf(fp, "return");
 530       break;
 531    }
 532 }
 533
 534 static void
 535 print_ssa_undef_instr(nir_ssa_undef_instr* instr, FILE *fp)
 536 {
 537    print_ssa_def(&instr->def, fp);
 538    fprintf(fp, " = undefined");
 539 }
 540
 541 static void
 542 print_phi_instr(nir_phi_instr *instr, FILE *fp)
 543 {
 544    print_dest(&instr->dest, fp);
 545    fprintf(fp, " = phi ");
 546    foreach_list_typed(nir_phi_src, src, node, &instr->srcs) {
 547       if (&src->node != exec_list_get_head(&instr->srcs))
 548          fprintf(fp, ", ");
 549
 550       fprintf(fp, "block_%u: ", src->pred->index);
 551       print_src(&src->src, fp);
 552    }
 553 }
 554
 555 static void
 556 print_parallel_copy_instr(nir_parallel_copy_instr *instr, FILE *fp)
 557 {
 558    nir_foreach_parallel_copy_entry(instr, entry) {
 559       if (&entry->node != exec_list_get_head(&instr->entries))
 560          fprintf(fp, "; ");
 561
 562       print_dest(&entry->dest, fp);
 563       fprintf(fp, " = ");
 564       print_src(&entry->src, fp);
 565    }
 566 }
 567
 568 static void
 569 print_instr(nir_instr *instr, print_var_state *state, unsigned tabs, FILE *fp)
 570 {
 571    print_tabs(tabs, fp);
 572
 573    switch (instr->type) {
 574    case nir_instr_type_alu:
 575       print_alu_instr(nir_instr_as_alu(instr), fp);
 576       break;
 577
 578    case nir_instr_type_call:
 579       print_call_instr(nir_instr_as_call(instr), state, fp);
 580       break;
 581
 582    case nir_instr_type_intrinsic:
 583       print_intrinsic_instr(nir_instr_as_intrinsic(instr), state, fp);
 584       break;
 585
 586    case nir_instr_type_tex:
 587       print_tex_instr(nir_instr_as_tex(instr), state, fp);
 588       break;
 589
 590    case nir_instr_type_load_const:
 591       print_load_const_instr(nir_instr_as_load_const(instr), tabs, fp);
 592       break;
 593
 594    case nir_instr_type_jump:
 595       print_jump_instr(nir_instr_as_jump(instr), fp);
 596       break;
 597
 598    case nir_instr_type_ssa_undef:
 599       print_ssa_undef_instr(nir_instr_as_ssa_undef(instr), fp);
 600       break;
 601
 602    case nir_instr_type_phi:
 603       print_phi_instr(nir_instr_as_phi(instr), fp);
 604       break;
 605
 606    case nir_instr_type_parallel_copy:
 607       print_parallel_copy_instr(nir_instr_as_parallel_copy(instr), fp);
 608       break;
 609
 610    default:
 611       unreachable("Invalid instruction type");
 612       break;
 613    }
 614
 615    fprintf(fp, "\n");
 616 }
 617
 618 static int
 619 compare_block_index(const void *p1, const void *p2)
 620 {
 621    const nir_block *block1 = *((const nir_block **) p1);
 622    const nir_block *block2 = *((const nir_block **) p2);
 623
 624    return (int) block1->index - (int) block2->index;
 625 }
 626
 627 static void print_cf_node(nir_cf_node *node, print_var_state *state,
 628                           unsigned tabs, FILE *fp);
 629
 630 static void
 631 print_block(nir_block *block, print_var_state *state, unsigned tabs, FILE *fp)
 632 {
 633    print_tabs(tabs, fp);
 634    fprintf(fp, "block block_%u:\n", block->index);
 635
 636    /* sort the predecessors by index so we consistently print the same thing */
 637
 638    nir_block **preds =
 639       malloc(block->predecessors->entries * sizeof(nir_block *));
 640
 641    struct set_entry *entry;
 642    unsigned i = 0;
 643    set_foreach(block->predecessors, entry) {
 644       preds[i++] = (nir_block *) entry->key;
 645    }
 646
 647    qsort(preds, block->predecessors->entries, sizeof(nir_block *),
 648          compare_block_index);
 649
 650    print_tabs(tabs, fp);
 651    fprintf(fp, "/* preds: ");
 652    for (unsigned i = 0; i < block->predecessors->entries; i++) {
 653       fprintf(fp, "block_%u ", preds[i]->index);
 654    }
 655    fprintf(fp, "*/\n");
 656
 657    free(preds);
 658
 659    nir_foreach_instr(block, instr) {
 660       print_instr(instr, state, tabs, fp);
 661    }
 662
 663    print_tabs(tabs, fp);
 664    fprintf(fp, "/* succs: ");
 665    for (unsigned i = 0; i < 2; i++)
 666       if (block->successors[i]) {
 667          fprintf(fp, "block_%u ", block->successors[i]->index);
 668       }
 669    fprintf(fp, "*/\n");
 670 }
 671
 672 static void
 673 print_if(nir_if *if_stmt, print_var_state *state, unsigned tabs, FILE *fp)
 674 {
 675    print_tabs(tabs, fp);
 676    fprintf(fp, "if ");
 677    print_src(&if_stmt->condition, fp);
 678    fprintf(fp, " {\n");
 679    foreach_list_typed(nir_cf_node, node, node, &if_stmt->then_list) {
 680       print_cf_node(node, state, tabs + 1, fp);
 681    }
 682    print_tabs(tabs, fp);
 683    fprintf(fp, "} else {\n");
 684    foreach_list_typed(nir_cf_node, node, node, &if_stmt->else_list) {
 685       print_cf_node(node, state, tabs + 1, fp);
 686    }
 687    print_tabs(tabs, fp);
 688    fprintf(fp, "}\n");
 689 }
 690
 691 static void
 692 print_loop(nir_loop *loop, print_var_state *state, unsigned tabs, FILE *fp)
 693 {
 694    print_tabs(tabs, fp);
 695    fprintf(fp, "loop {\n");
 696    foreach_list_typed(nir_cf_node, node, node, &loop->body) {
 697       print_cf_node(node, state, tabs + 1, fp);
 698    }
 699    print_tabs(tabs, fp);
 700    fprintf(fp, "}\n");
 701 }
 702
 703 static void
 704 print_cf_node(nir_cf_node *node, print_var_state *state, unsigned int tabs,
 705               FILE *fp)
 706 {
 707    switch (node->type) {
 708    case nir_cf_node_block:
 709       print_block(nir_cf_node_as_block(node), state, tabs, fp);
 710       break;
 711
 712    case nir_cf_node_if:
 713       print_if(nir_cf_node_as_if(node), state, tabs, fp);
 714       break;
 715
 716    case nir_cf_node_loop:
 717       print_loop(nir_cf_node_as_loop(node), state, tabs, fp);
 718       break;
 719
 720    default:
 721       unreachable("Invalid CFG node type");
 722    }
 723 }
 724
 725 static void
 726 print_function_impl(nir_function_impl *impl, print_var_state *state, FILE *fp)
 727 {
 728    fprintf(fp, "\nimpl %s ", impl->overload->function->name);
 729
 730    for (unsigned i = 0; i < impl->num_params; i++) {
 731       if (i != 0)
 732          fprintf(fp, ", ");
 733
 734       print_var(impl->params[i], state, fp);
 735    }
 736
 737    if (impl->return_var != NULL) {
 738       if (impl->num_params != 0)
 739          fprintf(fp, ", ");
 740       fprintf(fp, "returning ");
 741       print_var(impl->return_var, state, fp);
 742    }
 743
 744    fprintf(fp, "{\n");
 745
 746    foreach_list_typed(nir_variable, var, node, &impl->locals) {
 747       fprintf(fp, "\t");
 748       print_var_decl(var, state, fp);
 749    }
 750
 751    foreach_list_typed(nir_register, reg, node, &impl->registers) {
 752       fprintf(fp, "\t");
 753       print_register_decl(reg, fp);
 754    }
 755
 756    nir_index_blocks(impl);
 757
 758    foreach_list_typed(nir_cf_node, node, node, &impl->body) {
 759       print_cf_node(node, state, 1, fp);
 760    }
 761
 762    fprintf(fp, "\tblock block_%u:\n}\n\n", impl->end_block->index);
 763 }
 764
 765 static void
 766 print_function_overload(nir_function_overload *overload,
 767                         print_var_state *state, FILE *fp)
 768 {
 769    fprintf(fp, "decl_overload %s ", overload->function->name);
 770
 771    for (unsigned i = 0; i < overload->num_params; i++) {
 772       if (i != 0)
 773          fprintf(fp, ", ");
 774
 775       switch (overload->params[i].param_type) {
 776       case nir_parameter_in:
 777          fprintf(fp, "in ");
 778          break;
 779       case nir_parameter_out:
 780          fprintf(fp, "out ");
 781          break;
 782       case nir_parameter_inout:
 783          fprintf(fp, "inout ");
 784          break;
 785       default:
 786          unreachable("Invalid parameter type");
 787       }
 788
 789       glsl_print_type(overload->params[i].type, fp);
 790    }
 791
 792    if (overload->return_type != NULL) {
 793       if (overload->num_params != 0)
 794          fprintf(fp, ", ");
 795       fprintf(fp, "returning ");
 796       glsl_print_type(overload->return_type, fp);
 797    }
 798
 799    fprintf(fp, "\n");
 800
 801    if (overload->impl != NULL) {
 802       print_function_impl(overload->impl, state, fp);
 803       return;
 804    }
 805 }
 806
 807 static void
 808 print_function(nir_function *func, print_var_state *state, FILE *fp)
 809 {
 810    foreach_list_typed(nir_function_overload, overload, node, &func->overload_list) {
 811       print_function_overload(overload, state, fp);
 812    }
 813 }
 814
 815 static void
 816 init_print_state(print_var_state *state)
 817 {
 818    state->ht = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
 819                                        _mesa_key_pointer_equal);
 820    state->syms = _mesa_set_create(NULL, _mesa_key_hash_string,
 821                                   _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 }