src/panfrost/bifrost/bi_print.c

   1 /*
   2  * Copyright (C) 2019 Connor Abbott <cwabbott0@gmail.com>
   3  * Copyright (C) 2019 Lyude Paul <thatslyude@gmail.com>
   4  * Copyright (C) 2019 Ryan Houdek <Sonicadvance1@gmail.com>
   5  * Copyright (C) 2019-2020 Collabora, Ltd.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24  * SOFTWARE.
  25  */
  26
  27 #include "bi_print.h"
  28
  29 const char *
  30 bi_clause_type_name(enum bifrost_clause_type T)
  31 {
  32         switch (T) {
  33         case BIFROST_CLAUSE_NONE: return "";
  34         case BIFROST_CLAUSE_LOAD_VARY: return "load_vary";
  35         case BIFROST_CLAUSE_UBO: return "ubo";
  36         case BIFROST_CLAUSE_TEX: return "tex";
  37         case BIFROST_CLAUSE_SSBO_LOAD: return "load";
  38         case BIFROST_CLAUSE_SSBO_STORE: return "store";
  39         case BIFROST_CLAUSE_BLEND: return "blend";
  40         case BIFROST_CLAUSE_ATEST: return "atest";
  41         case BIFROST_CLAUSE_64BIT: return "64";
  42         default: return "??";
  43         }
  44 }
  45
  46 const char *
  47 bi_output_mod_name(enum bifrost_outmod mod)
  48 {
  49         switch (mod) {
  50         case BIFROST_NONE: return "";
  51         case BIFROST_POS: return ".pos";
  52         case BIFROST_SAT_SIGNED: return ".sat_signed";
  53         case BIFROST_SAT: return ".sat";
  54         default: return "invalid";
  55         }
  56 }
  57
  58 const char *
  59 bi_minmax_mode_name(enum bifrost_minmax_mode mod)
  60 {
  61         switch (mod) {
  62         case BIFROST_MINMAX_NONE: return "";
  63         case BIFROST_NAN_WINS: return ".nan_wins";
  64         case BIFROST_SRC1_WINS: return ".src1_wins";
  65         case BIFROST_SRC0_WINS: return ".src0_wins";
  66         default: return "invalid";
  67         }
  68 }
  69
  70 const char *
  71 bi_round_mode_name(enum bifrost_roundmode mod)
  72 {
  73         switch (mod) {
  74         case BIFROST_RTE: return "";
  75         case BIFROST_RTP: return ".rtp";
  76         case BIFROST_RTN: return ".rtn";
  77         case BIFROST_RTZ: return ".rtz";
  78         default: return "invalid";
  79         }
  80 }
  81
  82 const char *
  83 bi_csel_cond_name(enum bifrost_csel_cond cond)
  84 {
  85         switch (cond) {
  86         case BIFROST_FEQ_F: return "feq.f";
  87         case BIFROST_FGT_F: return "fgt.f";
  88         case BIFROST_FGE_F: return "fge.f";
  89         case BIFROST_IEQ_F: return "ieq.f";
  90         case BIFROST_IGT_I: return "igt.i";
  91         case BIFROST_IGE_I: return "uge.i";
  92         case BIFROST_UGT_I: return "ugt.i";
  93         case BIFROST_UGE_I: return "uge.i";
  94         default: return "invalid";
  95         }
  96 }
  97
  98 const char *
  99 bi_interp_mode_name(enum bifrost_interp_mode mode)
 100 {
 101         switch (mode) {
 102         case BIFROST_INTERP_PER_FRAG: return ".per_frag";
 103         case BIFROST_INTERP_CENTROID: return ".centroid";
 104         case BIFROST_INTERP_DEFAULT: return "";
 105         case BIFROST_INTERP_EXPLICIT: return ".explicit";
 106         default: return ".unknown";
 107         }
 108 }
 109
 110 const char *
 111 bi_ldst_type_name(enum bifrost_ldst_type type)
 112 {
 113         switch (type) {
 114         case BIFROST_LDST_F16: return "f16";
 115         case BIFROST_LDST_F32: return "f32";
 116         case BIFROST_LDST_I32: return "i32";
 117         case BIFROST_LDST_U32: return "u32";
 118         default: return "invalid";
 119         }
 120 }
 121
 122 /* The remaining functions in this file are for IR-internal
 123  * structures; the disassembler doesn't use them */
 124
 125 const char *
 126 bi_class_name(enum bi_class cl)
 127 {
 128         switch (cl) {
 129         case BI_ADD: return "add";
 130         case BI_ATEST: return "atest";
 131         case BI_BRANCH: return "branch";
 132         case BI_CMP: return "cmp";
 133         case BI_BLEND: return "blend";
 134         case BI_BITWISE: return "bitwise";
 135         case BI_COMBINE: return "combine";
 136         case BI_CONVERT: return "convert";
 137         case BI_CSEL: return "csel";
 138         case BI_DISCARD: return "discard";
 139         case BI_FMA: return "fma";
 140         case BI_FMOV: return "fmov";
 141         case BI_FREXP: return "frexp";
 142         case BI_ISUB: return "isub";
 143         case BI_LOAD: return "load";
 144         case BI_LOAD_UNIFORM: return "load_uniform";
 145         case BI_LOAD_ATTR: return "load_attr";
 146         case BI_LOAD_VAR: return "load_var";
 147         case BI_LOAD_VAR_ADDRESS: return "load_var_address";
 148         case BI_MINMAX: return "minmax";
 149         case BI_MOV: return "mov";
 150         case BI_SHIFT: return "shift";
 151         case BI_STORE: return "store";
 152         case BI_STORE_VAR: return "store_var";
 153         case BI_SPECIAL: return "special";
 154         case BI_SWIZZLE: return "swizzle";
 155         case BI_TEX: return "tex";
 156         case BI_ROUND: return "round";
 157         default: return "unknown_class";
 158         }
 159 }
 160
 161 static void
 162 bi_print_index(FILE *fp, bi_instruction *ins, unsigned index)
 163 {
 164         if (!index)
 165                 fprintf(fp, "_");
 166         else if (index & BIR_INDEX_REGISTER)
 167                 fprintf(fp, "br%u", index & ~BIR_INDEX_REGISTER);
 168         else if (index & BIR_INDEX_UNIFORM)
 169                 fprintf(fp, "u%u", index & ~BIR_INDEX_UNIFORM);
 170         else if (index & BIR_INDEX_CONSTANT)
 171                 fprintf(fp, "#0x%" PRIx64, bi_get_immediate(ins, index));
 172         else if (index & BIR_INDEX_ZERO)
 173                 fprintf(fp, "#0");
 174         else if (index & BIR_IS_REG)
 175                 fprintf(fp, "r%u", index >> 1);
 176         else
 177                 fprintf(fp, "%u", (index >> 1) - 1);
 178 }
 179
 180 static void
 181 bi_print_src(FILE *fp, bi_instruction *ins, unsigned s)
 182 {
 183         unsigned src = ins->src[s];
 184         bool mods = bi_has_source_mods(ins);
 185         bool abs = ins->src_abs[s] && mods;
 186         bool neg = ins->src_neg[s] && mods;
 187
 188         if (neg)
 189                 fprintf(fp, "-");
 190
 191         if (abs)
 192                 fprintf(fp, "abs(");
 193
 194         bi_print_index(fp, ins, src);
 195
 196         if (abs)
 197                 fprintf(fp, ")");
 198 }
 199
 200 /* Prints a NIR ALU type in Bifrost-style ".f32" ".i8" etc */
 201
 202 static void
 203 bi_print_alu_type(nir_alu_type t, FILE *fp)
 204 {
 205         unsigned size = nir_alu_type_get_type_size(t);
 206         nir_alu_type base = nir_alu_type_get_base_type(t);
 207
 208         switch (base) {
 209         case nir_type_int:
 210                 fprintf(fp, ".i");
 211                 break;
 212         case nir_type_uint:
 213                 fprintf(fp, ".u");
 214                 break;
 215         case nir_type_bool:
 216                 fprintf(fp, ".b");
 217                 break;
 218         case nir_type_float:
 219                 fprintf(fp, ".f");
 220                 break;
 221         default:
 222                 fprintf(fp, ".unknown");
 223                 break;
 224         }
 225
 226         fprintf(fp, "%u", size);
 227 }
 228
 229 static void
 230 bi_print_swizzle(bi_instruction *ins, unsigned src, FILE *fp)
 231 {
 232         unsigned size = nir_alu_type_get_type_size(ins->dest_type);
 233         unsigned count = (size == 64) ? 1 : (32 / size);
 234
 235         fprintf(fp, ".");
 236
 237         for (unsigned u = 0; u < count; ++u) {
 238                 assert(ins->swizzle[src][u] < 4);
 239                 fputc("xyzw"[ins->swizzle[src][u]], fp);
 240         }
 241 }
 242
 243 static const char *
 244 bi_bitwise_op_name(enum bi_bitwise_op op)
 245 {
 246         switch (op) {
 247         case BI_BITWISE_AND: return "and";
 248         case BI_BITWISE_OR: return "or";
 249         case BI_BITWISE_XOR: return "xor";
 250         default: return "invalid";
 251         }
 252 }
 253
 254 const char *
 255 bi_special_op_name(enum bi_special_op op)
 256 {
 257         switch (op) {
 258         case BI_SPECIAL_FRCP: return "frcp";
 259         case BI_SPECIAL_FRSQ: return "frsq";
 260         default: return "invalid";
 261         }
 262 }
 263
 264 static void
 265 bi_print_load_vary(struct bi_load_vary *load, FILE *fp)
 266 {
 267         fprintf(fp, "%s", bi_interp_mode_name(load->interp_mode));
 268
 269         if (load->reuse)
 270                 fprintf(fp, ".reuse");
 271
 272         if (load->flat)
 273                 fprintf(fp, ".flat");
 274 }
 275
 276 const char *
 277 bi_cond_name(enum bi_cond cond)
 278 {
 279         switch (cond) {
 280         case BI_COND_ALWAYS: return "always";
 281         case BI_COND_LT: return "lt";
 282         case BI_COND_LE: return "le";
 283         case BI_COND_GE: return "ge";
 284         case BI_COND_GT: return "gt";
 285         case BI_COND_EQ: return "eq";
 286         case BI_COND_NE: return "ne";
 287         default: return "invalid";
 288         }
 289 }
 290
 291 static void
 292 bi_print_branch(struct bi_branch *branch, FILE *fp)
 293 {
 294         fprintf(fp, ".%s", bi_cond_name(branch->cond));
 295 }
 296
 297 static void
 298 bi_print_writemask(bi_instruction *ins, FILE *fp)
 299 {
 300         unsigned bits_per_comp = nir_alu_type_get_type_size(ins->dest_type);
 301         assert(bits_per_comp);
 302         unsigned bytes_per_comp = bits_per_comp / 8;
 303         unsigned comps = 16 / bytes_per_comp;
 304         unsigned smask = (1 << bytes_per_comp) - 1;
 305         fprintf(fp, ".");
 306
 307         for (unsigned i = 0; i < comps; ++i) {
 308                 unsigned masked = (ins->writemask >> (i * bytes_per_comp)) & smask;
 309                 if (!masked)
 310                         continue;
 311
 312                 assert(masked == smask);
 313                 assert(i < 4);
 314                 fputc("xyzw"[i], fp);
 315         }
 316 }
 317
 318 void
 319 bi_print_instruction(bi_instruction *ins, FILE *fp)
 320 {
 321         if (ins->type == BI_MINMAX)
 322                 fprintf(fp, "%s", ins->op.minmax == BI_MINMAX_MIN ? "min" : "max");
 323         else if (ins->type == BI_BITWISE)
 324                 fprintf(fp, "%s", bi_bitwise_op_name(ins->op.bitwise));
 325         else if (ins->type == BI_ROUND)
 326                 fprintf(fp, ins->op.round == BI_ROUND_MODE ? "roundMode": "round");
 327         else if (ins->type == BI_SPECIAL)
 328                 fprintf(fp, "%s", bi_special_op_name(ins->op.special));
 329         else if (ins->type == BI_CMP)
 330                 fprintf(fp, "%s", bi_cond_name(ins->op.compare));
 331         else
 332                 fprintf(fp, "%s", bi_class_name(ins->type));
 333
 334         if (ins->type == BI_MINMAX)
 335                 fprintf(fp, "%s", bi_minmax_mode_name(ins->minmax));
 336         else if (ins->type == BI_LOAD_VAR)
 337                 bi_print_load_vary(&ins->load_vary, fp);
 338         else if (ins->type == BI_BRANCH)
 339                 bi_print_branch(&ins->branch, fp);
 340         else if (ins->type == BI_CSEL)
 341                 fprintf(fp, ".%s", bi_cond_name(ins->csel_cond));
 342         else if (ins->type == BI_BLEND)
 343                 fprintf(fp, ".loc%u", ins->blend_location);
 344         else if (ins->type == BI_STORE || ins->type == BI_STORE_VAR)
 345                 fprintf(fp, ".v%u", ins->store_channels);
 346
 347         if (ins->dest)
 348                 bi_print_alu_type(ins->dest_type, fp);
 349
 350         if (bi_has_outmod(ins))
 351                 fprintf(fp, "%s", bi_output_mod_name(ins->outmod));
 352
 353         if (bi_class_props[ins->type] & BI_ROUNDMODE)
 354                 fprintf(fp, "%s", bi_round_mode_name(ins->roundmode));
 355
 356         fprintf(fp, " ");
 357         bi_print_index(fp, ins, ins->dest);
 358
 359         if (ins->dest)
 360                 bi_print_writemask(ins, fp);
 361
 362         fprintf(fp, ", ");
 363
 364         bi_foreach_src(ins, s) {
 365                 bi_print_src(fp, ins, s);
 366
 367                 if (ins->src[s] && !(ins->src[s] & (BIR_INDEX_CONSTANT | BIR_INDEX_ZERO))) {
 368                         bi_print_alu_type(ins->src_types[s], fp);
 369                         bi_print_swizzle(ins, s, fp);
 370                 }
 371
 372                 if (s < BIR_SRC_COUNT)
 373                         fprintf(fp, ", ");
 374         }
 375
 376         if (ins->type == BI_BRANCH) {
 377                 if (ins->branch.target)
 378                         fprintf(fp, "-> block%u", ins->branch.target->base.name);
 379                 else
 380                         fprintf(fp, "-> blockhole");
 381         }
 382
 383         fprintf(fp, "\n");
 384 }
 385
 386 void
 387 bi_print_bundle(bi_bundle *bundle, FILE *fp)
 388 {
 389         bi_instruction *ins[2] = { bundle->fma, bundle->add };
 390
 391         for (unsigned i = 0; i < 2; ++i) {
 392                 if (ins[i])
 393                         bi_print_instruction(ins[i], fp);
 394                 else
 395                         fprintf(fp, "nop\n");
 396         }
 397 }
 398
 399 void
 400 bi_print_clause(bi_clause *clause, FILE *fp)
 401 {
 402         fprintf(fp, "\tid(%u)", clause->scoreboard_id);
 403
 404         if (clause->dependencies) {
 405                 fprintf(fp, ", wait(");
 406
 407                 for (unsigned i = 0; i < 8; ++i) {
 408                         if (clause->dependencies & (1 << i))
 409                                 fprintf(fp, "%u ", i);
 410                 }
 411
 412                 fprintf(fp, ")");
 413         }
 414
 415         if (!clause->back_to_back)
 416                 fprintf(fp, " nbb %s", clause->branch_conditional ? "branch-cond" : "branch-uncond");
 417
 418         if (clause->data_register_write_barrier)
 419                 fprintf(fp, " drwb");
 420
 421         fprintf(fp, "\n");
 422
 423         if (clause->instruction_count) {
 424                 assert(!clause->bundle_count);
 425
 426                 for (unsigned i = 0; i < clause->instruction_count; ++i)
 427                         bi_print_instruction(clause->instructions[i], fp);
 428         } else {
 429                 assert(clause->bundle_count);
 430
 431                 for (unsigned i = 0; i < clause->bundle_count; ++i)
 432                         bi_print_bundle(&clause->bundles[i], fp);
 433         }
 434
 435         if (clause->constant_count) {
 436                 for (unsigned i = 0; i < clause->constant_count; ++i)
 437                         fprintf(fp, "%" PRIx64 " ", clause->constants[i]);
 438
 439                 fprintf(fp, "\n");
 440         }
 441 }
 442
 443 void
 444 bi_print_block(bi_block *block, FILE *fp)
 445 {
 446         fprintf(fp, "block%u {\n", block->base.name);
 447
 448         if (block->scheduled) {
 449                 bi_foreach_clause_in_block(block, clause)
 450                         bi_print_clause(clause, fp);
 451         } else {
 452                 bi_foreach_instr_in_block(block, ins)
 453                         bi_print_instruction(ins, fp);
 454         }
 455
 456         fprintf(fp, "}");
 457
 458         if (block->base.successors[0]) {
 459                 fprintf(fp, " -> ");
 460
 461                 pan_foreach_successor((&block->base), succ)
 462                         fprintf(fp, "block%u ", succ->name);
 463         }
 464
 465         if (block->base.predecessors->entries) {
 466                 fprintf(fp, " from");
 467
 468                 bi_foreach_predecessor(block, pred)
 469                         fprintf(fp, " block%u", pred->base.name);
 470         }
 471
 472         fprintf(fp, "\n\n");
 473 }
 474
 475 void
 476 bi_print_shader(bi_context *ctx, FILE *fp)
 477 {
 478         bi_foreach_block(ctx, block)
 479                 bi_print_block((bi_block *) block, fp);
 480 }