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_FRAGZ: return "fragz";
  41         case BIFROST_CLAUSE_ATEST: return "atest";
  42         case BIFROST_CLAUSE_64BIT: return "64";
  43         default: return "??";
  44         }
  45 }
  46
  47 const char *
  48 bi_output_mod_name(enum bifrost_outmod mod)
  49 {
  50         switch (mod) {
  51         case BIFROST_NONE: return "";
  52         case BIFROST_POS: return ".pos";
  53         case BIFROST_SAT_SIGNED: return ".sat_signed";
  54         case BIFROST_SAT: return ".sat";
  55         default: return "invalid";
  56         }
  57 }
  58
  59 const char *
  60 bi_minmax_mode_name(enum bifrost_minmax_mode mod)
  61 {
  62         switch (mod) {
  63         case BIFROST_MINMAX_NONE: return "";
  64         case BIFROST_NAN_WINS: return ".nan_wins";
  65         case BIFROST_SRC1_WINS: return ".src1_wins";
  66         case BIFROST_SRC0_WINS: return ".src0_wins";
  67         default: return "invalid";
  68         }
  69 }
  70
  71 const char *
  72 bi_round_mode_name(enum bifrost_roundmode mod)
  73 {
  74         switch (mod) {
  75         case BIFROST_RTE: return "";
  76         case BIFROST_RTP: return ".rtp";
  77         case BIFROST_RTN: return ".rtn";
  78         case BIFROST_RTZ: return ".rtz";
  79         default: return "invalid";
  80         }
  81 }
  82
  83 const char *
  84 bi_csel_cond_name(enum bifrost_csel_cond cond)
  85 {
  86         switch (cond) {
  87         case BIFROST_FEQ_F: return "feq.f";
  88         case BIFROST_FGT_F: return "fgt.f";
  89         case BIFROST_FGE_F: return "fge.f";
  90         case BIFROST_IEQ_F: return "ieq.f";
  91         case BIFROST_IGT_I: return "igt.i";
  92         case BIFROST_IGE_I: return "uge.i";
  93         case BIFROST_UGT_I: return "ugt.i";
  94         case BIFROST_UGE_I: return "uge.i";
  95         default: return "invalid";
  96         }
  97 }
  98
  99 const char *
 100 bi_interp_mode_name(enum bifrost_interp_mode mode)
 101 {
 102         switch (mode) {
 103         case BIFROST_INTERP_PER_FRAG: return ".per_frag";
 104         case BIFROST_INTERP_CENTROID: return ".centroid";
 105         case BIFROST_INTERP_DEFAULT: return "";
 106         case BIFROST_INTERP_EXPLICIT: return ".explicit";
 107         default: return ".unknown";
 108         }
 109 }
 110
 111 const char *
 112 bi_ldst_type_name(enum bifrost_ldst_type type)
 113 {
 114         switch (type) {
 115         case BIFROST_LDST_F16: return "f16";
 116         case BIFROST_LDST_F32: return "f32";
 117         case BIFROST_LDST_I32: return "i32";
 118         case BIFROST_LDST_U32: return "u32";
 119         default: return "invalid";
 120         }
 121 }
 122
 123 /* The remaining functions in this file are for IR-internal
 124  * structures; the disassembler doesn't use them */
 125
 126 const char *
 127 bi_class_name(enum bi_class cl)
 128 {
 129         switch (cl) {
 130         case BI_ADD: return "add";
 131         case BI_ATEST: return "atest";
 132         case BI_BRANCH: return "branch";
 133         case BI_CMP: return "cmp";
 134         case BI_BLEND: return "blend";
 135         case BI_BITWISE: return "bitwise";
 136         case BI_COMBINE: return "combine";
 137         case BI_CONVERT: return "convert";
 138         case BI_CSEL: return "csel";
 139         case BI_DISCARD: return "discard";
 140         case BI_FMA: return "fma";
 141         case BI_FMOV: return "fmov";
 142         case BI_FREXP: return "frexp";
 143         case BI_IMATH: return "imath";
 144         case BI_LOAD: return "load";
 145         case BI_LOAD_UNIFORM: return "load_uniform";
 146         case BI_LOAD_ATTR: return "load_attr";
 147         case BI_LOAD_VAR: return "load_var";
 148         case BI_LOAD_VAR_ADDRESS: return "load_var_address";
 149         case BI_MINMAX: return "minmax";
 150         case BI_MOV: return "mov";
 151         case BI_SELECT: return "select";
 152         case BI_STORE: return "store";
 153         case BI_STORE_VAR: return "store_var";
 154         case BI_SPECIAL: return "special";
 155         case BI_TABLE: return "table";
 156         case BI_TEX: return "tex";
 157         case BI_ROUND: return "round";
 158         default: return "unknown_class";
 159         }
 160 }
 161
 162 static bool
 163 bi_print_dest_index(FILE *fp, bi_instruction *ins, unsigned index)
 164 {
 165         if (!index)
 166                 fprintf(fp, "_");
 167         else if (index & BIR_INDEX_REGISTER)
 168                 fprintf(fp, "br%u", index & ~BIR_INDEX_REGISTER);
 169         else if (index & PAN_IS_REG)
 170                 fprintf(fp, "r%u", index >> 1);
 171         else if (!(index & BIR_SPECIAL))
 172                 fprintf(fp, "%u", (index >> 1) - 1);
 173         else
 174                 return false;
 175
 176         return true;
 177 }
 178
 179 static void
 180 bi_print_index(FILE *fp, bi_instruction *ins, unsigned index, unsigned s)
 181 {
 182         if (bi_print_dest_index(fp, ins, index))
 183                 return;
 184
 185         if (index & BIR_INDEX_UNIFORM)
 186                 fprintf(fp, "u%u", index & ~BIR_INDEX_UNIFORM);
 187         else if (index & BIR_INDEX_CONSTANT)
 188                 fprintf(fp, "#0x%" PRIx64, bi_get_immediate(ins, s));
 189         else if (index & BIR_INDEX_ZERO)
 190                 fprintf(fp, "#0");
 191         else
 192                 fprintf(fp, "#err");
 193 }
 194
 195 static void
 196 bi_print_src(FILE *fp, bi_instruction *ins, unsigned s)
 197 {
 198         unsigned src = ins->src[s];
 199         bool mods = bi_has_source_mods(ins);
 200         bool abs = ins->src_abs[s] && mods;
 201         bool neg = ins->src_neg[s] && mods;
 202
 203         if (neg)
 204                 fprintf(fp, "-");
 205
 206         if (abs)
 207                 fprintf(fp, "abs(");
 208
 209         if (ins->type == BI_BITWISE && ins->bitwise.src_invert[s])
 210                 fprintf(fp, "~");
 211
 212         bi_print_index(fp, ins, src, s);
 213
 214         if (abs)
 215                 fprintf(fp, ")");
 216 }
 217
 218 static void
 219 bi_print_swizzle(bi_instruction *ins, unsigned src, FILE *fp)
 220 {
 221         fprintf(fp, ".");
 222
 223         for (unsigned u = 0; u < bi_get_component_count(ins, src); ++u) {
 224                 assert(ins->swizzle[src][u] < 4);
 225                 fputc("xyzw"[ins->swizzle[src][u]], fp);
 226         }
 227 }
 228
 229 static const char *
 230 bi_bitwise_op_name(enum bi_bitwise_op op)
 231 {
 232         switch (op) {
 233         case BI_BITWISE_AND: return "and";
 234         case BI_BITWISE_OR: return "or";
 235         case BI_BITWISE_XOR: return "xor";
 236         default: return "invalid";
 237         }
 238 }
 239
 240 static const char *
 241 bi_imath_op_name(enum bi_imath_op op)
 242 {
 243         switch (op) {
 244         case BI_IMATH_ADD: return "iadd";
 245         case BI_IMATH_SUB: return "isub";
 246         default: return "invalid";
 247         }
 248 }
 249
 250 const char *
 251 bi_table_op_name(enum bi_table_op op)
 252 {
 253         switch (op) {
 254         case BI_TABLE_LOG2_U_OVER_U_1_LOW: return "log2.help";
 255         default: return "invalid";
 256         }
 257 }
 258
 259 const char *
 260 bi_special_op_name(enum bi_special_op op)
 261 {
 262         switch (op) {
 263         case BI_SPECIAL_FRCP: return "frcp";
 264         case BI_SPECIAL_FRSQ: return "frsq";
 265         case BI_SPECIAL_EXP2_LOW: return "exp2_low";
 266         default: return "invalid";
 267         }
 268 }
 269
 270 const char *
 271 bi_reduce_op_name(enum bi_reduce_op op)
 272 {
 273         switch (op) {
 274         case BI_REDUCE_ADD_FREXPM: return "add_frexpm";
 275         default: return "invalid";
 276         }
 277 }
 278
 279 const char *
 280 bi_frexp_op_name(enum bi_frexp_op op)
 281 {
 282         switch (op) {
 283         case BI_FREXPE_LOG: return "frexpe_log";
 284         default: return "invalid";
 285         }
 286 }
 287
 288 const char *
 289 bi_tex_op_name(enum bi_tex_op op)
 290 {
 291         switch (op) {
 292         case BI_TEX_NORMAL: return "normal";
 293         case BI_TEX_COMPACT: return "compact";
 294         case BI_TEX_DUAL: return "dual";
 295         default: return "invalid";
 296         }
 297 }
 298
 299 static void
 300 bi_print_load_vary(struct bi_load_vary *load, FILE *fp)
 301 {
 302         fprintf(fp, "%s", bi_interp_mode_name(load->interp_mode));
 303
 304         if (load->reuse)
 305                 fprintf(fp, ".reuse");
 306
 307         if (load->flat)
 308                 fprintf(fp, ".flat");
 309 }
 310
 311 const char *
 312 bi_cond_name(enum bi_cond cond)
 313 {
 314         switch (cond) {
 315         case BI_COND_ALWAYS: return "always";
 316         case BI_COND_LT: return "lt";
 317         case BI_COND_LE: return "le";
 318         case BI_COND_GE: return "ge";
 319         case BI_COND_GT: return "gt";
 320         case BI_COND_EQ: return "eq";
 321         case BI_COND_NE: return "ne";
 322         default: return "invalid";
 323         }
 324 }
 325
 326 static void
 327 bi_print_texture(struct bi_texture *tex, FILE *fp)
 328 {
 329         fprintf(fp, " - texture %u, sampler %u",
 330                         tex->texture_index, tex->sampler_index);
 331 }
 332
 333 void
 334 bi_print_instruction(bi_instruction *ins, FILE *fp)
 335 {
 336         if (ins->type == BI_MINMAX)
 337                 fprintf(fp, "%s", ins->op.minmax == BI_MINMAX_MIN ? "min" : "max");
 338         else if (ins->type == BI_BITWISE)
 339                 fprintf(fp, "%s", bi_bitwise_op_name(ins->op.bitwise));
 340         else if (ins->type == BI_IMATH)
 341                 fprintf(fp, "%s", bi_imath_op_name(ins->op.imath));
 342         else if (ins->type == BI_SPECIAL)
 343                 fprintf(fp, "%s", bi_special_op_name(ins->op.special));
 344         else if (ins->type == BI_TABLE)
 345                 fprintf(fp, "%s", bi_table_op_name(ins->op.table));
 346         else if (ins->type == BI_REDUCE_FMA)
 347                 fprintf(fp, "%s", bi_reduce_op_name(ins->op.reduce));
 348         else if (ins->type == BI_FREXP)
 349                 fprintf(fp, "%s", bi_frexp_op_name(ins->op.frexp));
 350         else
 351                 fprintf(fp, "%s", bi_class_name(ins->type));
 352
 353         if ((ins->type == BI_ADD || ins->type == BI_FMA) && ins->op.mscale)
 354                 fprintf(fp, ".mscale");
 355
 356         if (ins->type == BI_MINMAX)
 357                 fprintf(fp, "%s", bi_minmax_mode_name(ins->minmax));
 358         else if (ins->type == BI_LOAD_VAR)
 359                 bi_print_load_vary(&ins->load_vary, fp);
 360         else if (ins->type == BI_BLEND)
 361                 fprintf(fp, ".loc%u", ins->blend_location);
 362         else if (ins->type == BI_TEX) {
 363                 fprintf(fp, ".%s", bi_tex_op_name(ins->op.texture));
 364         } else if (ins->type == BI_BITWISE)
 365                 fprintf(fp, ".%cshift", ins->bitwise.rshift ? 'r' : 'l');
 366
 367         if (bi_class_props[ins->type] & BI_CONDITIONAL)
 368                 fprintf(fp, ".%s", bi_cond_name(ins->cond));
 369
 370         if (ins->vector_channels)
 371                 fprintf(fp, ".v%u", ins->vector_channels);
 372
 373         if (ins->dest)
 374                 pan_print_alu_type(ins->dest_type, fp);
 375
 376         if (bi_has_outmod(ins))
 377                 fprintf(fp, "%s", bi_output_mod_name(ins->outmod));
 378
 379         if (bi_class_props[ins->type] & BI_ROUNDMODE)
 380                 fprintf(fp, "%s", bi_round_mode_name(ins->roundmode));
 381
 382         fprintf(fp, " ");
 383         bool succ = bi_print_dest_index(fp, ins, ins->dest);
 384         assert(succ);
 385
 386         if (ins->dest_offset)
 387                 fprintf(fp, "+%u", ins->dest_offset);
 388
 389         fprintf(fp, ", ");
 390
 391         bi_foreach_src(ins, s) {
 392                 bi_print_src(fp, ins, s);
 393
 394                 if (ins->src[s] && !(ins->src[s] & (BIR_INDEX_CONSTANT | BIR_INDEX_ZERO))) {
 395                         pan_print_alu_type(ins->src_types[s], fp);
 396                         bi_print_swizzle(ins, s, fp);
 397                 }
 398
 399                 if (s < BIR_SRC_COUNT)
 400                         fprintf(fp, ", ");
 401         }
 402
 403         if (ins->type == BI_BRANCH) {
 404                 if (ins->branch_target) {
 405                         fprintf(fp, "-> block%u", ins->branch_target->base.name);
 406                 } else {
 407                         fprintf(fp, "-> void");
 408                 }
 409         } else if (ins->type == BI_TEX) {
 410                 bi_print_texture(&ins->texture, fp);
 411         }
 412
 413         fprintf(fp, "\n");
 414 }
 415
 416 void
 417 bi_print_ports(bi_registers *regs, FILE *fp)
 418 {
 419         for (unsigned i = 0; i < 2; ++i) {
 420                 if (regs->enabled[i])
 421                         fprintf(fp, "port %u: %u\n", i, regs->port[i]);
 422         }
 423
 424         if (regs->write_fma || regs->write_add) {
 425                 fprintf(fp, "port 2 (%s): %u\n",
 426                                 regs->write_add ? "ADD" : "FMA",
 427                                 regs->port[2]);
 428         }
 429
 430         if ((regs->write_fma && regs->write_add) || regs->read_port3) {
 431                 fprintf(fp, "port 3 (%s): %u\n",
 432                                 regs->read_port3 ? "read" : "FMA",
 433                                 regs->port[3]);
 434         }
 435 }
 436
 437 void
 438 bi_print_bundle(bi_bundle *bundle, FILE *fp)
 439 {
 440         bi_instruction *ins[2] = { bundle->fma, bundle->add };
 441
 442         for (unsigned i = 0; i < 2; ++i) {
 443                 if (ins[i])
 444                         bi_print_instruction(ins[i], fp);
 445                 else
 446                         fprintf(fp, "nop\n");
 447         }
 448 }
 449
 450 void
 451 bi_print_clause(bi_clause *clause, FILE *fp)
 452 {
 453         fprintf(fp, "\tid(%u)", clause->scoreboard_id);
 454
 455         if (clause->dependencies) {
 456                 fprintf(fp, ", wait(");
 457
 458                 for (unsigned i = 0; i < 8; ++i) {
 459                         if (clause->dependencies & (1 << i))
 460                                 fprintf(fp, "%u ", i);
 461                 }
 462
 463                 fprintf(fp, ")");
 464         }
 465
 466         if (!clause->back_to_back)
 467                 fprintf(fp, " nbb %s", clause->branch_conditional ? "branch-cond" : "branch-uncond");
 468
 469         if (clause->data_register_write_barrier)
 470                 fprintf(fp, " drwb");
 471
 472         fprintf(fp, "\n");
 473
 474         for (unsigned i = 0; i < clause->bundle_count; ++i)
 475                 bi_print_bundle(&clause->bundles[i], fp);
 476
 477         if (clause->constant_count) {
 478                 for (unsigned i = 0; i < clause->constant_count; ++i)
 479                         fprintf(fp, "%" PRIx64 " ", clause->constants[i]);
 480
 481                 if (clause->branch_constant)
 482                         fprintf(fp, "*");
 483
 484                 fprintf(fp, "\n");
 485         }
 486 }
 487
 488 void
 489 bi_print_block(bi_block *block, FILE *fp)
 490 {
 491         fprintf(fp, "block%u {\n", block->base.name);
 492
 493         if (block->scheduled) {
 494                 bi_foreach_clause_in_block(block, clause)
 495                         bi_print_clause(clause, fp);
 496         } else {
 497                 bi_foreach_instr_in_block(block, ins)
 498                         bi_print_instruction(ins, fp);
 499         }
 500
 501         fprintf(fp, "}");
 502
 503         if (block->base.successors[0]) {
 504                 fprintf(fp, " -> ");
 505
 506                 pan_foreach_successor((&block->base), succ)
 507                         fprintf(fp, "block%u ", succ->name);
 508         }
 509
 510         if (block->base.predecessors->entries) {
 511                 fprintf(fp, " from");
 512
 513                 bi_foreach_predecessor(block, pred)
 514                         fprintf(fp, " block%u", pred->base.name);
 515         }
 516
 517         fprintf(fp, "\n\n");
 518 }
 519
 520 void
 521 bi_print_shader(bi_context *ctx, FILE *fp)
 522 {
 523         bi_foreach_block(ctx, block)
 524                 bi_print_block((bi_block *) block, fp);
 525 }