gcc/hsa-common.c

   1 /* Implementation of commonly needed HSAIL related functions and methods.
   2    Copyright (C) 2013-2017 Free Software Foundation, Inc.
   3    Contributed by Martin Jambor <mjambor@suse.cz> and
   4    Martin Liska <mliska@suse.cz>.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #include "config.h"
  23 #include "system.h"
  24 #include "coretypes.h"
  25 #include "tm.h"
  26 #include "is-a.h"
  27 #include "hash-set.h"
  28 #include "hash-map.h"
  29 #include "vec.h"
  30 #include "tree.h"
  31 #include "dumpfile.h"
  32 #include "gimple-pretty-print.h"
  33 #include "diagnostic-core.h"
  34 #include "alloc-pool.h"
  35 #include "cgraph.h"
  36 #include "print-tree.h"
  37 #include "stringpool.h"
  38 #include "symbol-summary.h"
  39 #include "hsa-common.h"
  40 #include "internal-fn.h"
  41 #include "ctype.h"
  42 #include "builtins.h"
  43 #include "stringpool.h"
  44 #include "attribs.h"
  45
  46 /* Structure containing intermediate HSA representation of the generated
  47    function.  */
  48 class hsa_function_representation *hsa_cfun;
  49
  50 /* Element of the mapping vector between a host decl and an HSA kernel.  */
  51
  52 struct GTY(()) hsa_decl_kernel_map_element
  53 {
  54   /* The decl of the host function.  */
  55   tree decl;
  56   /* Name of the HSA kernel in BRIG.  */
  57   char * GTY((skip)) name;
  58   /* Size of OMP data, if the kernel contains a kernel dispatch.  */
  59   unsigned omp_data_size;
  60   /* True if the function is gridified kernel.  */
  61   bool gridified_kernel_p;
  62 };
  63
  64 /* Mapping between decls and corresponding HSA kernels in this compilation
  65    unit.  */
  66
  67 static GTY (()) vec<hsa_decl_kernel_map_element, va_gc>
  68   *hsa_decl_kernel_mapping;
  69
  70 /* Mapping between decls and corresponding HSA kernels
  71    called by the function.  */
  72 hash_map <tree, vec <const char *> *> *hsa_decl_kernel_dependencies;
  73
  74 /* Hash function to lookup a symbol for a decl.  */
  75 hash_table <hsa_noop_symbol_hasher> *hsa_global_variable_symbols;
  76
  77 /* HSA summaries.  */
  78 hsa_summary_t *hsa_summaries = NULL;
  79
  80 /* HSA number of threads.  */
  81 hsa_symbol *hsa_num_threads = NULL;
  82
  83 /* HSA function that cannot be expanded to HSAIL.  */
  84 hash_set <tree> *hsa_failed_functions = NULL;
  85
  86 /* True if compilation unit-wide data are already allocated and initialized.  */
  87 static bool compilation_unit_data_initialized;
  88
  89 /* Return true if FNDECL represents an HSA-callable function.  */
  90
  91 bool
  92 hsa_callable_function_p (tree fndecl)
  93 {
  94   return (lookup_attribute ("omp declare target", DECL_ATTRIBUTES (fndecl))
  95           && !lookup_attribute ("oacc function", DECL_ATTRIBUTES (fndecl)));
  96 }
  97
  98 /* Allocate HSA structures that are are used when dealing with different
  99    functions.  */
 100
 101 void
 102 hsa_init_compilation_unit_data (void)
 103 {
 104   if (compilation_unit_data_initialized)
 105     return;
 106
 107   compilation_unit_data_initialized = true;
 108
 109   hsa_global_variable_symbols = new hash_table <hsa_noop_symbol_hasher> (8);
 110   hsa_failed_functions = new hash_set <tree> ();
 111   hsa_emitted_internal_decls = new hash_table <hsa_internal_fn_hasher> (2);
 112 }
 113
 114 /* Free data structures that are used when dealing with different
 115    functions.  */
 116
 117 void
 118 hsa_deinit_compilation_unit_data (void)
 119 {
 120   gcc_assert (compilation_unit_data_initialized);
 121
 122   delete hsa_failed_functions;
 123   delete hsa_emitted_internal_decls;
 124
 125   for (hash_table <hsa_noop_symbol_hasher>::iterator it
 126        = hsa_global_variable_symbols->begin ();
 127        it != hsa_global_variable_symbols->end ();
 128        ++it)
 129     {
 130       hsa_symbol *sym = *it;
 131       delete sym;
 132     }
 133
 134   delete hsa_global_variable_symbols;
 135
 136   if (hsa_num_threads)
 137     {
 138       delete hsa_num_threads;
 139       hsa_num_threads = NULL;
 140     }
 141
 142   compilation_unit_data_initialized = false;
 143 }
 144
 145 /* Return true if we are generating large HSA machine model.  */
 146
 147 bool
 148 hsa_machine_large_p (void)
 149 {
 150   /* FIXME: I suppose this is technically wrong but should work for me now.  */
 151   return (GET_MODE_BITSIZE (Pmode) == 64);
 152 }
 153
 154 /* Return the HSA profile we are using.  */
 155
 156 bool
 157 hsa_full_profile_p (void)
 158 {
 159   return true;
 160 }
 161
 162 /* Return true if a register in operand number OPNUM of instruction
 163    is an output.  False if it is an input.  */
 164
 165 bool
 166 hsa_insn_basic::op_output_p (unsigned opnum)
 167 {
 168   switch (m_opcode)
 169     {
 170     case HSA_OPCODE_PHI:
 171     case BRIG_OPCODE_CBR:
 172     case BRIG_OPCODE_SBR:
 173     case BRIG_OPCODE_ST:
 174     case BRIG_OPCODE_SIGNALNORET:
 175     case BRIG_OPCODE_DEBUGTRAP:
 176       /* FIXME: There are probably missing cases here, double check.  */
 177       return false;
 178     case BRIG_OPCODE_EXPAND:
 179       /* Example: expand_v4_b32_b128 (dest0, dest1, dest2, dest3), src0.  */
 180       return opnum < operand_count () - 1;
 181     default:
 182      return opnum == 0;
 183     }
 184 }
 185
 186 /* Return true if OPCODE is an floating-point bit instruction opcode.  */
 187
 188 bool
 189 hsa_opcode_floating_bit_insn_p (BrigOpcode16_t opcode)
 190 {
 191   switch (opcode)
 192     {
 193     case BRIG_OPCODE_NEG:
 194     case BRIG_OPCODE_ABS:
 195     case BRIG_OPCODE_CLASS:
 196     case BRIG_OPCODE_COPYSIGN:
 197       return true;
 198     default:
 199       return false;
 200     }
 201 }
 202
 203 /* Return the number of destination operands for this INSN.  */
 204
 205 unsigned
 206 hsa_insn_basic::input_count ()
 207 {
 208   switch (m_opcode)
 209     {
 210       default:
 211         return 1;
 212
 213       case BRIG_OPCODE_NOP:
 214         return 0;
 215
 216       case BRIG_OPCODE_EXPAND:
 217         return 2;
 218
 219       case BRIG_OPCODE_LD:
 220         /* ld_v[234] not yet handled.  */
 221         return 1;
 222
 223       case BRIG_OPCODE_ST:
 224         return 0;
 225
 226       case BRIG_OPCODE_ATOMICNORET:
 227         return 0;
 228
 229       case BRIG_OPCODE_SIGNAL:
 230         return 1;
 231
 232       case BRIG_OPCODE_SIGNALNORET:
 233         return 0;
 234
 235       case BRIG_OPCODE_MEMFENCE:
 236         return 0;
 237
 238       case BRIG_OPCODE_RDIMAGE:
 239       case BRIG_OPCODE_LDIMAGE:
 240       case BRIG_OPCODE_STIMAGE:
 241       case BRIG_OPCODE_QUERYIMAGE:
 242       case BRIG_OPCODE_QUERYSAMPLER:
 243         sorry ("HSA image ops not handled");
 244         return 0;
 245
 246       case BRIG_OPCODE_CBR:
 247       case BRIG_OPCODE_BR:
 248         return 0;
 249
 250       case BRIG_OPCODE_SBR:
 251         return 0; /* ??? */
 252
 253       case BRIG_OPCODE_WAVEBARRIER:
 254         return 0; /* ??? */
 255
 256       case BRIG_OPCODE_BARRIER:
 257       case BRIG_OPCODE_ARRIVEFBAR:
 258       case BRIG_OPCODE_INITFBAR:
 259       case BRIG_OPCODE_JOINFBAR:
 260       case BRIG_OPCODE_LEAVEFBAR:
 261       case BRIG_OPCODE_RELEASEFBAR:
 262       case BRIG_OPCODE_WAITFBAR:
 263         return 0;
 264
 265       case BRIG_OPCODE_LDF:
 266         return 1;
 267
 268       case BRIG_OPCODE_ACTIVELANECOUNT:
 269       case BRIG_OPCODE_ACTIVELANEID:
 270       case BRIG_OPCODE_ACTIVELANEMASK:
 271       case BRIG_OPCODE_ACTIVELANEPERMUTE:
 272         return 1; /* ??? */
 273
 274       case BRIG_OPCODE_CALL:
 275       case BRIG_OPCODE_SCALL:
 276       case BRIG_OPCODE_ICALL:
 277         return 0;
 278
 279       case BRIG_OPCODE_RET:
 280         return 0;
 281
 282       case BRIG_OPCODE_ALLOCA:
 283         return 1;
 284
 285       case BRIG_OPCODE_CLEARDETECTEXCEPT:
 286         return 0;
 287
 288       case BRIG_OPCODE_SETDETECTEXCEPT:
 289         return 0;
 290
 291       case BRIG_OPCODE_PACKETCOMPLETIONSIG:
 292       case BRIG_OPCODE_PACKETID:
 293       case BRIG_OPCODE_CASQUEUEWRITEINDEX:
 294       case BRIG_OPCODE_LDQUEUEREADINDEX:
 295       case BRIG_OPCODE_LDQUEUEWRITEINDEX:
 296       case BRIG_OPCODE_STQUEUEREADINDEX:
 297       case BRIG_OPCODE_STQUEUEWRITEINDEX:
 298         return 1; /* ??? */
 299
 300       case BRIG_OPCODE_ADDQUEUEWRITEINDEX:
 301         return 1;
 302
 303       case BRIG_OPCODE_DEBUGTRAP:
 304         return 0;
 305
 306       case BRIG_OPCODE_GROUPBASEPTR:
 307       case BRIG_OPCODE_KERNARGBASEPTR:
 308         return 1; /* ??? */
 309
 310       case HSA_OPCODE_ARG_BLOCK:
 311         return 0;
 312
 313       case BRIG_KIND_DIRECTIVE_COMMENT:
 314         return 0;
 315     }
 316 }
 317
 318 /* Return the number of source operands for this INSN.  */
 319
 320 unsigned
 321 hsa_insn_basic::num_used_ops ()
 322 {
 323   gcc_checking_assert (input_count () <= operand_count ());
 324
 325   return operand_count () - input_count ();
 326 }
 327
 328 /* Set alignment to VALUE.  */
 329
 330 void
 331 hsa_insn_mem::set_align (BrigAlignment8_t value)
 332 {
 333   /* TODO: Perhaps remove this dump later on:  */
 334   if (dump_file && (dump_flags & TDF_DETAILS) && value < m_align)
 335     {
 336       fprintf (dump_file, "Decreasing alignment to %u in instruction ", value);
 337       dump_hsa_insn (dump_file, this);
 338     }
 339   m_align = value;
 340 }
 341
 342 /* Return size of HSA type T in bits.  */
 343
 344 unsigned
 345 hsa_type_bit_size (BrigType16_t t)
 346 {
 347   switch (t)
 348     {
 349     case BRIG_TYPE_B1:
 350       return 1;
 351
 352     case BRIG_TYPE_U8:
 353     case BRIG_TYPE_S8:
 354     case BRIG_TYPE_B8:
 355       return 8;
 356
 357     case BRIG_TYPE_U16:
 358     case BRIG_TYPE_S16:
 359     case BRIG_TYPE_B16:
 360     case BRIG_TYPE_F16:
 361       return 16;
 362
 363     case BRIG_TYPE_U32:
 364     case BRIG_TYPE_S32:
 365     case BRIG_TYPE_B32:
 366     case BRIG_TYPE_F32:
 367     case BRIG_TYPE_U8X4:
 368     case BRIG_TYPE_U16X2:
 369     case BRIG_TYPE_S8X4:
 370     case BRIG_TYPE_S16X2:
 371     case BRIG_TYPE_F16X2:
 372       return 32;
 373
 374     case BRIG_TYPE_U64:
 375     case BRIG_TYPE_S64:
 376     case BRIG_TYPE_F64:
 377     case BRIG_TYPE_B64:
 378     case BRIG_TYPE_U8X8:
 379     case BRIG_TYPE_U16X4:
 380     case BRIG_TYPE_U32X2:
 381     case BRIG_TYPE_S8X8:
 382     case BRIG_TYPE_S16X4:
 383     case BRIG_TYPE_S32X2:
 384     case BRIG_TYPE_F16X4:
 385     case BRIG_TYPE_F32X2:
 386
 387       return 64;
 388
 389     case BRIG_TYPE_B128:
 390     case BRIG_TYPE_U8X16:
 391     case BRIG_TYPE_U16X8:
 392     case BRIG_TYPE_U32X4:
 393     case BRIG_TYPE_U64X2:
 394     case BRIG_TYPE_S8X16:
 395     case BRIG_TYPE_S16X8:
 396     case BRIG_TYPE_S32X4:
 397     case BRIG_TYPE_S64X2:
 398     case BRIG_TYPE_F16X8:
 399     case BRIG_TYPE_F32X4:
 400     case BRIG_TYPE_F64X2:
 401       return 128;
 402
 403     default:
 404       gcc_assert (hsa_seen_error ());
 405       return t;
 406     }
 407 }
 408
 409 /* Return BRIG bit-type with BITSIZE length.  */
 410
 411 BrigType16_t
 412 hsa_bittype_for_bitsize (unsigned bitsize)
 413 {
 414   switch (bitsize)
 415     {
 416     case 1:
 417       return BRIG_TYPE_B1;
 418     case 8:
 419       return BRIG_TYPE_B8;
 420     case 16:
 421       return BRIG_TYPE_B16;
 422     case 32:
 423       return BRIG_TYPE_B32;
 424     case 64:
 425       return BRIG_TYPE_B64;
 426     case 128:
 427       return BRIG_TYPE_B128;
 428     default:
 429       gcc_unreachable ();
 430     }
 431 }
 432
 433 /* Return BRIG unsigned int type with BITSIZE length.  */
 434
 435 BrigType16_t
 436 hsa_uint_for_bitsize (unsigned bitsize)
 437 {
 438   switch (bitsize)
 439     {
 440     case 8:
 441       return BRIG_TYPE_U8;
 442     case 16:
 443       return BRIG_TYPE_U16;
 444     case 32:
 445       return BRIG_TYPE_U32;
 446     case 64:
 447       return BRIG_TYPE_U64;
 448     default:
 449       gcc_unreachable ();
 450     }
 451 }
 452
 453 /* Return BRIG float type with BITSIZE length.  */
 454
 455 BrigType16_t
 456 hsa_float_for_bitsize (unsigned bitsize)
 457 {
 458   switch (bitsize)
 459     {
 460     case 16:
 461       return BRIG_TYPE_F16;
 462     case 32:
 463       return BRIG_TYPE_F32;
 464     case 64:
 465       return BRIG_TYPE_F64;
 466     default:
 467       gcc_unreachable ();
 468     }
 469 }
 470
 471 /* Return HSA bit-type with the same size as the type T.  */
 472
 473 BrigType16_t
 474 hsa_bittype_for_type (BrigType16_t t)
 475 {
 476   return hsa_bittype_for_bitsize (hsa_type_bit_size (t));
 477 }
 478
 479 /* Return HSA unsigned integer type with the same size as the type T.  */
 480
 481 BrigType16_t
 482 hsa_unsigned_type_for_type (BrigType16_t t)
 483 {
 484   return hsa_uint_for_bitsize (hsa_type_bit_size (t));
 485 }
 486
 487 /* Return true if TYPE is a packed HSA type.  */
 488
 489 bool
 490 hsa_type_packed_p (BrigType16_t type)
 491 {
 492   return (type & BRIG_TYPE_PACK_MASK) != BRIG_TYPE_PACK_NONE;
 493 }
 494
 495 /* Return true if and only if TYPE is a floating point number type.  */
 496
 497 bool
 498 hsa_type_float_p (BrigType16_t type)
 499 {
 500   switch (type & BRIG_TYPE_BASE_MASK)
 501     {
 502     case BRIG_TYPE_F16:
 503     case BRIG_TYPE_F32:
 504     case BRIG_TYPE_F64:
 505       return true;
 506     default:
 507       return false;
 508     }
 509 }
 510
 511 /* Return true if and only if TYPE is an integer number type.  */
 512
 513 bool
 514 hsa_type_integer_p (BrigType16_t type)
 515 {
 516   switch (type & BRIG_TYPE_BASE_MASK)
 517     {
 518     case BRIG_TYPE_U8:
 519     case BRIG_TYPE_U16:
 520     case BRIG_TYPE_U32:
 521     case BRIG_TYPE_U64:
 522     case BRIG_TYPE_S8:
 523     case BRIG_TYPE_S16:
 524     case BRIG_TYPE_S32:
 525     case BRIG_TYPE_S64:
 526       return true;
 527     default:
 528       return false;
 529     }
 530 }
 531
 532 /* Return true if and only if TYPE is an bit-type.  */
 533
 534 bool
 535 hsa_btype_p (BrigType16_t type)
 536 {
 537   switch (type & BRIG_TYPE_BASE_MASK)
 538     {
 539     case BRIG_TYPE_B8:
 540     case BRIG_TYPE_B16:
 541     case BRIG_TYPE_B32:
 542     case BRIG_TYPE_B64:
 543     case BRIG_TYPE_B128:
 544       return true;
 545     default:
 546       return false;
 547     }
 548 }
 549
 550
 551 /* Return HSA alignment encoding alignment to N bits.  */
 552
 553 BrigAlignment8_t
 554 hsa_alignment_encoding (unsigned n)
 555 {
 556   gcc_assert (n >= 8 && !(n & (n - 1)));
 557   if (n >= 256)
 558     return BRIG_ALIGNMENT_32;
 559
 560   switch (n)
 561     {
 562     case 8:
 563       return BRIG_ALIGNMENT_1;
 564     case 16:
 565       return BRIG_ALIGNMENT_2;
 566     case 32:
 567       return BRIG_ALIGNMENT_4;
 568     case 64:
 569       return BRIG_ALIGNMENT_8;
 570     case 128:
 571       return BRIG_ALIGNMENT_16;
 572     default:
 573       gcc_unreachable ();
 574     }
 575 }
 576
 577 /* Return HSA alignment encoding alignment of T got
 578    by get_object_alignment.  */
 579
 580 BrigAlignment8_t
 581 hsa_object_alignment (tree t)
 582 {
 583   return hsa_alignment_encoding (get_object_alignment (t));
 584 }
 585
 586 /* Return byte alignment for given BrigAlignment8_t value.  */
 587
 588 unsigned
 589 hsa_byte_alignment (BrigAlignment8_t alignment)
 590 {
 591   gcc_assert (alignment != BRIG_ALIGNMENT_NONE);
 592
 593   return 1 << (alignment - 1);
 594 }
 595
 596 /* Return natural alignment of HSA TYPE.  */
 597
 598 BrigAlignment8_t
 599 hsa_natural_alignment (BrigType16_t type)
 600 {
 601   return hsa_alignment_encoding (hsa_type_bit_size (type & ~BRIG_TYPE_ARRAY));
 602 }
 603
 604 /* Call the correct destructor of a HSA instruction.  */
 605
 606 void
 607 hsa_destroy_insn (hsa_insn_basic *insn)
 608 {
 609   if (hsa_insn_phi *phi = dyn_cast <hsa_insn_phi *> (insn))
 610     phi->~hsa_insn_phi ();
 611   else if (hsa_insn_cbr *br = dyn_cast <hsa_insn_cbr *> (insn))
 612     br->~hsa_insn_cbr ();
 613   else if (hsa_insn_cmp *cmp = dyn_cast <hsa_insn_cmp *> (insn))
 614     cmp->~hsa_insn_cmp ();
 615   else if (hsa_insn_mem *mem = dyn_cast <hsa_insn_mem *> (insn))
 616     mem->~hsa_insn_mem ();
 617   else if (hsa_insn_atomic *atomic = dyn_cast <hsa_insn_atomic *> (insn))
 618     atomic->~hsa_insn_atomic ();
 619   else if (hsa_insn_seg *seg = dyn_cast <hsa_insn_seg *> (insn))
 620     seg->~hsa_insn_seg ();
 621   else if (hsa_insn_call *call = dyn_cast <hsa_insn_call *> (insn))
 622     call->~hsa_insn_call ();
 623   else if (hsa_insn_arg_block *block = dyn_cast <hsa_insn_arg_block *> (insn))
 624     block->~hsa_insn_arg_block ();
 625   else if (hsa_insn_sbr *sbr = dyn_cast <hsa_insn_sbr *> (insn))
 626     sbr->~hsa_insn_sbr ();
 627   else if (hsa_insn_br *br = dyn_cast <hsa_insn_br *> (insn))
 628     br->~hsa_insn_br ();
 629   else if (hsa_insn_comment *comment = dyn_cast <hsa_insn_comment *> (insn))
 630     comment->~hsa_insn_comment ();
 631   else
 632     insn->~hsa_insn_basic ();
 633 }
 634
 635 /* Call the correct destructor of a HSA operand.  */
 636
 637 void
 638 hsa_destroy_operand (hsa_op_base *op)
 639 {
 640   if (hsa_op_code_list *list = dyn_cast <hsa_op_code_list *> (op))
 641     list->~hsa_op_code_list ();
 642   else if (hsa_op_operand_list *list = dyn_cast <hsa_op_operand_list *> (op))
 643     list->~hsa_op_operand_list ();
 644   else if (hsa_op_reg *reg = dyn_cast <hsa_op_reg *> (op))
 645     reg->~hsa_op_reg ();
 646   else if (hsa_op_immed *immed = dyn_cast <hsa_op_immed *> (op))
 647     immed->~hsa_op_immed ();
 648   else
 649     op->~hsa_op_base ();
 650 }
 651
 652 /* Create a mapping between the original function DECL and kernel name NAME.  */
 653
 654 void
 655 hsa_add_kern_decl_mapping (tree decl, char *name, unsigned omp_data_size,
 656                            bool gridified_kernel_p)
 657 {
 658   hsa_decl_kernel_map_element dkm;
 659   dkm.decl = decl;
 660   dkm.name = name;
 661   dkm.omp_data_size = omp_data_size;
 662   dkm.gridified_kernel_p = gridified_kernel_p;
 663   vec_safe_push (hsa_decl_kernel_mapping, dkm);
 664 }
 665
 666 /* Return the number of kernel decl name mappings.  */
 667
 668 unsigned
 669 hsa_get_number_decl_kernel_mappings (void)
 670 {
 671   return vec_safe_length (hsa_decl_kernel_mapping);
 672 }
 673
 674 /* Return the decl in the Ith kernel decl name mapping.  */
 675
 676 tree
 677 hsa_get_decl_kernel_mapping_decl (unsigned i)
 678 {
 679   return (*hsa_decl_kernel_mapping)[i].decl;
 680 }
 681
 682 /* Return the name in the Ith kernel decl name mapping.  */
 683
 684 char *
 685 hsa_get_decl_kernel_mapping_name (unsigned i)
 686 {
 687   return (*hsa_decl_kernel_mapping)[i].name;
 688 }
 689
 690 /* Return maximum OMP size for kernel decl name mapping.  */
 691
 692 unsigned
 693 hsa_get_decl_kernel_mapping_omp_size (unsigned i)
 694 {
 695   return (*hsa_decl_kernel_mapping)[i].omp_data_size;
 696 }
 697
 698 /* Return if the function is gridified kernel in decl name mapping.  */
 699
 700 bool
 701 hsa_get_decl_kernel_mapping_gridified (unsigned i)
 702 {
 703   return (*hsa_decl_kernel_mapping)[i].gridified_kernel_p;
 704 }
 705
 706 /* Free the mapping between original decls and kernel names.  */
 707
 708 void
 709 hsa_free_decl_kernel_mapping (void)
 710 {
 711   if (hsa_decl_kernel_mapping == NULL)
 712     return;
 713
 714   for (unsigned i = 0; i < hsa_decl_kernel_mapping->length (); ++i)
 715     free ((*hsa_decl_kernel_mapping)[i].name);
 716   ggc_free (hsa_decl_kernel_mapping);
 717 }
 718
 719 /* Add new kernel dependency.  */
 720
 721 void
 722 hsa_add_kernel_dependency (tree caller, const char *called_function)
 723 {
 724   if (hsa_decl_kernel_dependencies == NULL)
 725     hsa_decl_kernel_dependencies = new hash_map<tree, vec<const char *> *> ();
 726
 727   vec <const char *> *s = NULL;
 728   vec <const char *> **slot = hsa_decl_kernel_dependencies->get (caller);
 729   if (slot == NULL)
 730     {
 731       s = new vec <const char *> ();
 732       hsa_decl_kernel_dependencies->put (caller, s);
 733     }
 734   else
 735     s = *slot;
 736
 737   s->safe_push (called_function);
 738 }
 739
 740 /* Expansion to HSA needs a few gc roots to hold types, constructors etc.  In
 741    order to minimize the number of GTY roots, we'll root them all in the
 742    following array.  The individual elements should only be accessed by the
 743    very simple getters (of a pointer-to-tree) below.  */
 744
 745 static GTY(()) tree hsa_tree_gt_roots[3];
 746
 747 tree *
 748 hsa_get_ctor_statements (void)
 749 {
 750   return &hsa_tree_gt_roots[0];
 751 }
 752
 753 tree *
 754 hsa_get_dtor_statements (void)
 755 {
 756   return &hsa_tree_gt_roots[1];
 757 }
 758
 759 tree *
 760 hsa_get_kernel_dispatch_type (void)
 761 {
 762   return &hsa_tree_gt_roots[2];
 763 }
 764
 765 /* Modify the name P in-place so that it is a valid HSA identifier.  */
 766
 767 void
 768 hsa_sanitize_name (char *p)
 769 {
 770   for (; *p; p++)
 771     if (*p == '.' || *p == '-')
 772       *p = '_';
 773 }
 774
 775 /* Clone the name P, set trailing ampersand and sanitize the name.  */
 776
 777 char *
 778 hsa_brig_function_name (const char *p)
 779 {
 780   unsigned len = strlen (p);
 781   char *buf = XNEWVEC (char, len + 2);
 782
 783   buf[0] = '&';
 784   buf[len + 1] = '\0';
 785   memcpy (buf + 1, p, len);
 786
 787   hsa_sanitize_name (buf);
 788   return buf;
 789 }
 790
 791 /* Add a flatten attribute and disable vectorization for gpu implementation
 792    function decl GDECL.  */
 793
 794 void hsa_summary_t::process_gpu_implementation_attributes (tree gdecl)
 795 {
 796   DECL_ATTRIBUTES (gdecl)
 797     = tree_cons (get_identifier ("flatten"), NULL_TREE,
 798                  DECL_ATTRIBUTES (gdecl));
 799
 800   tree fn_opts = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (gdecl);
 801   if (fn_opts == NULL_TREE)
 802     fn_opts = optimization_default_node;
 803   fn_opts = copy_node (fn_opts);
 804   TREE_OPTIMIZATION (fn_opts)->x_flag_tree_loop_vectorize = false;
 805   TREE_OPTIMIZATION (fn_opts)->x_flag_tree_slp_vectorize = false;
 806   DECL_FUNCTION_SPECIFIC_OPTIMIZATION (gdecl) = fn_opts;
 807 }
 808
 809 void
 810 hsa_summary_t::link_functions (cgraph_node *gpu, cgraph_node *host,
 811                                hsa_function_kind kind, bool gridified_kernel_p)
 812 {
 813   hsa_function_summary *gpu_summary = get (gpu);
 814   hsa_function_summary *host_summary = get (host);
 815
 816   gpu_summary->m_kind = kind;
 817   host_summary->m_kind = kind;
 818
 819   gpu_summary->m_gpu_implementation_p = true;
 820   host_summary->m_gpu_implementation_p = false;
 821
 822   gpu_summary->m_gridified_kernel_p = gridified_kernel_p;
 823   host_summary->m_gridified_kernel_p = gridified_kernel_p;
 824
 825   gpu_summary->m_bound_function = host;
 826   host_summary->m_bound_function = gpu;
 827
 828   process_gpu_implementation_attributes (gpu->decl);
 829
 830   /* Create reference between a kernel and a corresponding host implementation
 831      to quarantee LTO streaming to a same LTRANS.  */
 832   if (kind == HSA_KERNEL)
 833     gpu->create_reference (host, IPA_REF_ADDR);
 834 }
 835
 836 /* Add a HOST function to HSA summaries.  */
 837
 838 void
 839 hsa_register_kernel (cgraph_node *host)
 840 {
 841   if (hsa_summaries == NULL)
 842     hsa_summaries = new hsa_summary_t (symtab);
 843   hsa_function_summary *s = hsa_summaries->get (host);
 844   s->m_kind = HSA_KERNEL;
 845 }
 846
 847 /* Add a pair of functions to HSA summaries.  GPU is an HSA implementation of
 848    a HOST function.  */
 849
 850 void
 851 hsa_register_kernel (cgraph_node *gpu, cgraph_node *host)
 852 {
 853   if (hsa_summaries == NULL)
 854     hsa_summaries = new hsa_summary_t (symtab);
 855   hsa_summaries->link_functions (gpu, host, HSA_KERNEL, true);
 856 }
 857
 858 /* Return true if expansion of the current HSA function has already failed.  */
 859
 860 bool
 861 hsa_seen_error (void)
 862 {
 863   return hsa_cfun->m_seen_error;
 864 }
 865
 866 /* Mark current HSA function as failed.  */
 867
 868 void
 869 hsa_fail_cfun (void)
 870 {
 871   hsa_failed_functions->add (hsa_cfun->m_decl);
 872   hsa_cfun->m_seen_error = true;
 873 }
 874
 875 char *
 876 hsa_internal_fn::name ()
 877 {
 878   char *name = xstrdup (internal_fn_name (m_fn));
 879   for (char *ptr = name; *ptr; ptr++)
 880     *ptr = TOLOWER (*ptr);
 881
 882   const char *suffix = NULL;
 883   if (m_type_bit_size == 32)
 884     suffix = "f";
 885
 886   if (suffix)
 887     {
 888       char *name2 = concat (name, suffix, NULL);
 889       free (name);
 890       name = name2;
 891     }
 892
 893   hsa_sanitize_name (name);
 894   return name;
 895 }
 896
 897 unsigned
 898 hsa_internal_fn::get_arity ()
 899 {
 900   switch (m_fn)
 901     {
 902     case IFN_ACOS:
 903     case IFN_ASIN:
 904     case IFN_ATAN:
 905     case IFN_COS:
 906     case IFN_EXP:
 907     case IFN_EXP10:
 908     case IFN_EXP2:
 909     case IFN_EXPM1:
 910     case IFN_LOG:
 911     case IFN_LOG10:
 912     case IFN_LOG1P:
 913     case IFN_LOG2:
 914     case IFN_LOGB:
 915     case IFN_SIGNIFICAND:
 916     case IFN_SIN:
 917     case IFN_SQRT:
 918     case IFN_TAN:
 919     case IFN_CEIL:
 920     case IFN_FLOOR:
 921     case IFN_NEARBYINT:
 922     case IFN_RINT:
 923     case IFN_ROUND:
 924     case IFN_TRUNC:
 925       return 1;
 926     case IFN_ATAN2:
 927     case IFN_COPYSIGN:
 928     case IFN_FMOD:
 929     case IFN_POW:
 930     case IFN_REMAINDER:
 931     case IFN_SCALB:
 932     case IFN_LDEXP:
 933       return 2;
 934     case IFN_CLRSB:
 935     case IFN_CLZ:
 936     case IFN_CTZ:
 937     case IFN_FFS:
 938     case IFN_PARITY:
 939     case IFN_POPCOUNT:
 940     default:
 941       /* As we produce sorry message for unknown internal functions,
 942          reaching this label is definitely a bug.  */
 943       gcc_unreachable ();
 944     }
 945 }
 946
 947 BrigType16_t
 948 hsa_internal_fn::get_argument_type (int n)
 949 {
 950   switch (m_fn)
 951     {
 952     case IFN_ACOS:
 953     case IFN_ASIN:
 954     case IFN_ATAN:
 955     case IFN_COS:
 956     case IFN_EXP:
 957     case IFN_EXP10:
 958     case IFN_EXP2:
 959     case IFN_EXPM1:
 960     case IFN_LOG:
 961     case IFN_LOG10:
 962     case IFN_LOG1P:
 963     case IFN_LOG2:
 964     case IFN_LOGB:
 965     case IFN_SIGNIFICAND:
 966     case IFN_SIN:
 967     case IFN_SQRT:
 968     case IFN_TAN:
 969     case IFN_CEIL:
 970     case IFN_FLOOR:
 971     case IFN_NEARBYINT:
 972     case IFN_RINT:
 973     case IFN_ROUND:
 974     case IFN_TRUNC:
 975     case IFN_ATAN2:
 976     case IFN_COPYSIGN:
 977     case IFN_FMOD:
 978     case IFN_POW:
 979     case IFN_REMAINDER:
 980     case IFN_SCALB:
 981       return hsa_float_for_bitsize (m_type_bit_size);
 982     case IFN_LDEXP:
 983       {
 984         if (n == -1 || n == 0)
 985           return hsa_float_for_bitsize (m_type_bit_size);
 986         else
 987           return BRIG_TYPE_S32;
 988       }
 989     default:
 990       /* As we produce sorry message for unknown internal functions,
 991          reaching this label is definitely a bug.  */
 992       gcc_unreachable ();
 993     }
 994 }
 995
 996 #include "gt-hsa-common.h"