src/gallium/auxiliary/gallivm/lp_bld_tgsi.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2011-2012 Advanced Micro Devices, Inc.
   4  * Copyright 2009 VMware, Inc.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 /**
  30  * @file
  31  * TGSI to LLVM IR translation.
  32  *
  33  * @author Jose Fonseca <jfonseca@vmware.com>
  34  * @author Tom Stellard <thomas.stellard@amd.com>
  35  */
  36
  37 #ifndef LP_BLD_TGSI_H
  38 #define LP_BLD_TGSI_H
  39
  40 #include "gallivm/lp_bld.h"
  41 #include "gallivm/lp_bld_tgsi_action.h"
  42 #include "gallivm/lp_bld_limits.h"
  43 #include "gallivm/lp_bld_sample.h"
  44 #include "lp_bld_type.h"
  45 #include "pipe/p_compiler.h"
  46 #include "pipe/p_state.h"
  47 #include "tgsi/tgsi_exec.h"
  48 #include "tgsi/tgsi_scan.h"
  49 #include "tgsi/tgsi_info.h"
  50
  51 #ifdef __cplusplus
  52 extern "C" {
  53 #endif
  54
  55 #define LP_CHAN_ALL ~0u
  56
  57 #define LP_MAX_INSTRUCTIONS 256
  58
  59 struct tgsi_full_declaration;
  60 struct tgsi_full_immediate;
  61 struct tgsi_full_instruction;
  62 struct tgsi_full_src_register;
  63 struct tgsi_opcode_info;
  64 struct tgsi_token;
  65 struct tgsi_shader_info;
  66 struct lp_build_mask_context;
  67 struct gallivm_state;
  68 struct lp_derivatives;
  69 struct lp_build_tgsi_gs_iface;
  70
  71
  72 enum lp_build_tex_modifier {
  73    LP_BLD_TEX_MODIFIER_NONE = 0,
  74    LP_BLD_TEX_MODIFIER_PROJECTED,
  75    LP_BLD_TEX_MODIFIER_LOD_BIAS,
  76    LP_BLD_TEX_MODIFIER_EXPLICIT_LOD,
  77    LP_BLD_TEX_MODIFIER_EXPLICIT_DERIV,
  78    LP_BLD_TEX_MODIFIER_LOD_ZERO
  79 };
  80
  81
  82 /**
  83  * Describe a channel of a register.
  84  *
  85  * The value can be a:
  86  * - immediate value (i.e. derived from a IMM register)
  87  * - CONST[n].x/y/z/w
  88  * - IN[n].x/y/z/w
  89  * - undetermined (when .file == TGSI_FILE_NULL)
  90  *
  91  * This is one of the analysis results, and is used to described
  92  * the output color in terms of inputs.
  93  */
  94 struct lp_tgsi_channel_info
  95 {
  96    unsigned file:4; /* TGSI_FILE_* */
  97    unsigned swizzle:3; /* PIPE_SWIZZLE_x */
  98    union {
  99       uint32_t index;
 100       float value; /* for TGSI_FILE_IMMEDIATE */
 101    } u;
 102 };
 103
 104
 105 /**
 106  * Describe a texture sampler interpolator.
 107  *
 108  * The interpolation is described in terms of regular inputs.
 109  */
 110 struct lp_tgsi_texture_info
 111 {
 112    struct lp_tgsi_channel_info coord[4];
 113    unsigned target:8; /* TGSI_TEXTURE_* */
 114    unsigned sampler_unit:8;  /* Sampler unit */
 115    unsigned texture_unit:8;  /* Texture unit */
 116    unsigned modifier:8; /* LP_BLD_TEX_MODIFIER_* */
 117 };
 118
 119
 120 struct lp_tgsi_info
 121 {
 122    struct tgsi_shader_info base;
 123
 124    /*
 125     * Whether any of the texture opcodes access a register file other than
 126     * TGSI_FILE_INPUT.
 127     *
 128     * We could also handle TGSI_FILE_CONST/IMMEDIATE here, but there is little
 129     * benefit.
 130     */
 131    unsigned indirect_textures:1;
 132
 133    /*
 134     * Whether any of the texture (sample) ocpodes use different sampler
 135     * and sampler view unit.
 136     */
 137    unsigned sampler_texture_units_different:1;
 138
 139    /*
 140     * Whether any immediate values are outside the range of 0 and 1
 141     */
 142    unsigned unclamped_immediates:1;
 143
 144    /*
 145     * Texture opcode description. Aimed at detecting and described direct
 146     * texture opcodes.
 147     */
 148    unsigned num_texs;
 149    struct lp_tgsi_texture_info tex[PIPE_MAX_SAMPLERS];
 150
 151    /*
 152     * Output description. Aimed at detecting and describing simple blit
 153     * shaders.
 154     */
 155    struct lp_tgsi_channel_info output[PIPE_MAX_SHADER_OUTPUTS][4];
 156
 157    /*
 158     * Shortcut pointers into the above (for fragment shaders).
 159     */
 160    const struct lp_tgsi_channel_info *cbuf[PIPE_MAX_COLOR_BUFS];
 161 };
 162
 163 /**
 164  * Reference to system values.
 165  */
 166 struct lp_bld_tgsi_system_values {
 167    LLVMValueRef instance_id;
 168    LLVMValueRef vertex_id;
 169    LLVMValueRef vertex_id_nobase;
 170    LLVMValueRef prim_id;
 171    LLVMValueRef basevertex;
 172    LLVMValueRef invocation_id;
 173 };
 174
 175
 176 /**
 177  * Sampler code generation interface.
 178  *
 179  * Although texture sampling is a requirement for TGSI translation, it is
 180  * a very different problem with several different approaches to it. This
 181  * structure establishes an interface for texture sampling code generation, so
 182  * that we can easily use different texture sampling strategies.
 183  */
 184 struct lp_build_sampler_soa
 185 {
 186    void
 187    (*destroy)( struct lp_build_sampler_soa *sampler );
 188
 189    void
 190    (*emit_tex_sample)(const struct lp_build_sampler_soa *sampler,
 191                       struct gallivm_state *gallivm,
 192                       const struct lp_sampler_params *params);
 193
 194    void
 195    (*emit_size_query)( const struct lp_build_sampler_soa *sampler,
 196                        struct gallivm_state *gallivm,
 197                        const struct lp_sampler_size_query_params *params);
 198 };
 199
 200
 201 struct lp_build_sampler_aos
 202 {
 203    LLVMValueRef
 204    (*emit_fetch_texel)( struct lp_build_sampler_aos *sampler,
 205                         struct lp_build_context *bld,
 206                         unsigned target, /* TGSI_TEXTURE_* */
 207                         unsigned unit,
 208                         LLVMValueRef coords,
 209                         const struct lp_derivatives derivs,
 210                         enum lp_build_tex_modifier modifier);
 211 };
 212
 213
 214 void
 215 lp_build_tgsi_info(const struct tgsi_token *tokens,
 216                    struct lp_tgsi_info *info);
 217
 218
 219 void
 220 lp_build_tgsi_soa(struct gallivm_state *gallivm,
 221                   const struct tgsi_token *tokens,
 222                   struct lp_type type,
 223                   struct lp_build_mask_context *mask,
 224                   LLVMValueRef consts_ptr,
 225                   LLVMValueRef const_sizes_ptr,
 226                   const struct lp_bld_tgsi_system_values *system_values,
 227                   const LLVMValueRef (*inputs)[4],
 228                   LLVMValueRef (*outputs)[4],
 229                   LLVMValueRef context_ptr,
 230                   LLVMValueRef thread_data_ptr,
 231                   struct lp_build_sampler_soa *sampler,
 232                   const struct tgsi_shader_info *info,
 233                   const struct lp_build_tgsi_gs_iface *gs_iface);
 234
 235
 236 void
 237 lp_build_tgsi_aos(struct gallivm_state *gallivm,
 238                   const struct tgsi_token *tokens,
 239                   struct lp_type type,
 240                   const unsigned char swizzles[4],
 241                   LLVMValueRef consts_ptr,
 242                   const LLVMValueRef *inputs,
 243                   LLVMValueRef *outputs,
 244                   struct lp_build_sampler_aos *sampler,
 245                   const struct tgsi_shader_info *info);
 246
 247
 248 enum lp_exec_mask_break_type {
 249    LP_EXEC_MASK_BREAK_TYPE_LOOP,
 250    LP_EXEC_MASK_BREAK_TYPE_SWITCH
 251 };
 252
 253
 254 struct lp_exec_mask {
 255    struct lp_build_context *bld;
 256
 257    boolean has_mask;
 258    boolean ret_in_main;
 259
 260    LLVMTypeRef int_vec_type;
 261
 262    LLVMValueRef exec_mask;
 263
 264    LLVMValueRef ret_mask;
 265    LLVMValueRef cond_mask;
 266    LLVMValueRef switch_mask;         /* current switch exec mask */
 267    LLVMValueRef cont_mask;
 268    LLVMValueRef break_mask;
 269
 270    struct function_ctx {
 271       int pc;
 272       LLVMValueRef ret_mask;
 273
 274       LLVMValueRef cond_stack[LP_MAX_TGSI_NESTING];
 275       int cond_stack_size;
 276
 277       /* keep track if break belongs to switch or loop */
 278       enum lp_exec_mask_break_type break_type_stack[LP_MAX_TGSI_NESTING];
 279       enum lp_exec_mask_break_type break_type;
 280
 281       struct {
 282          LLVMValueRef switch_val;
 283          LLVMValueRef switch_mask;
 284          LLVMValueRef switch_mask_default;
 285          boolean switch_in_default;
 286          unsigned switch_pc;
 287       } switch_stack[LP_MAX_TGSI_NESTING];
 288       int switch_stack_size;
 289       LLVMValueRef switch_val;
 290       LLVMValueRef switch_mask_default; /* reverse of switch mask used for default */
 291       boolean switch_in_default;        /* if switch exec is currently in default */
 292       unsigned switch_pc;               /* when used points to default or endswitch-1 */
 293
 294       LLVMValueRef loop_limiter;
 295       LLVMBasicBlockRef loop_block;
 296       LLVMValueRef break_var;
 297       struct {
 298          LLVMBasicBlockRef loop_block;
 299          LLVMValueRef cont_mask;
 300          LLVMValueRef break_mask;
 301          LLVMValueRef break_var;
 302       } loop_stack[LP_MAX_TGSI_NESTING];
 303       int loop_stack_size;
 304
 305    } *function_stack;
 306    int function_stack_size;
 307 };
 308
 309 struct lp_build_tgsi_inst_list
 310 {
 311    struct tgsi_full_instruction *instructions;
 312    uint max_instructions;
 313    uint num_instructions;
 314 };
 315
 316 unsigned lp_bld_tgsi_list_init(struct lp_build_tgsi_context * bld_base);
 317
 318
 319 unsigned lp_bld_tgsi_add_instruction(
 320    struct lp_build_tgsi_context * bld_base,
 321    const struct tgsi_full_instruction *inst_to_add);
 322
 323
 324 struct lp_build_tgsi_context;
 325
 326
 327 typedef LLVMValueRef (*lp_build_emit_fetch_fn)(struct lp_build_tgsi_context *,
 328                                         const struct tgsi_full_src_register *,
 329                                         enum tgsi_opcode_type,
 330                                         unsigned);
 331
 332 struct lp_build_tgsi_context
 333 {
 334    struct lp_build_context base;
 335
 336    struct lp_build_context uint_bld;
 337    struct lp_build_context int_bld;
 338
 339    struct lp_build_context dbl_bld;
 340
 341    struct lp_build_context uint64_bld;
 342    struct lp_build_context int64_bld;
 343
 344    /** This array stores functions that are used to transform TGSI opcodes to
 345      * LLVM instructions.
 346      */
 347    struct lp_build_tgsi_action op_actions[TGSI_OPCODE_LAST];
 348
 349    /* TGSI_OPCODE_RSQ is defined as 1 / sqrt( abs(src0.x) ), rsq_action
 350     * should compute 1 / sqrt (src0.x) */
 351    struct lp_build_tgsi_action rsq_action;
 352
 353    struct lp_build_tgsi_action sqrt_action;
 354
 355    struct lp_build_tgsi_action drsq_action;
 356
 357    struct lp_build_tgsi_action dsqrt_action;
 358    const struct tgsi_shader_info *info;
 359
 360    lp_build_emit_fetch_fn emit_fetch_funcs[TGSI_FILE_COUNT];
 361
 362    LLVMValueRef (*emit_swizzle)(struct lp_build_tgsi_context *,
 363                          LLVMValueRef, unsigned, unsigned, unsigned, unsigned);
 364
 365
 366    void (*emit_debug)(struct lp_build_tgsi_context *,
 367                       const struct tgsi_full_instruction *,
 368                       const struct tgsi_opcode_info *);
 369
 370    void (*emit_store)(struct lp_build_tgsi_context *,
 371                       const struct tgsi_full_instruction *,
 372                       const struct tgsi_opcode_info *,
 373                       unsigned index,
 374                       LLVMValueRef dst[4]);
 375
 376    void (*emit_declaration)(struct lp_build_tgsi_context *,
 377                              const struct tgsi_full_declaration *decl);
 378
 379    void (*emit_immediate)(struct lp_build_tgsi_context *,
 380                           const struct tgsi_full_immediate *imm);
 381
 382
 383    /* Allow the user to store data in this structure rather than passing it
 384     * to every function. */
 385    void * userdata;
 386
 387    boolean soa;
 388
 389    int pc;
 390
 391    struct tgsi_full_instruction *instructions;
 392    uint max_instructions;
 393    uint num_instructions;
 394
 395    /** This function allows the user to insert some instructions at the
 396      * beginning of the program.  It is optional and does not need to be
 397      * implemented.
 398      */
 399    void (*emit_prologue)(struct lp_build_tgsi_context*);
 400
 401    /** This function allows the user to insert some instructions at the end of
 402      * the program.  This callback is intended to be used for emitting
 403      * instructions to handle the export for the output registers, but it can
 404      * be used for any purpose.  Implementing this function is optiona, but
 405      * recommended.
 406      */
 407    void (*emit_epilogue)(struct lp_build_tgsi_context*);
 408 };
 409
 410 struct lp_build_tgsi_gs_iface
 411 {
 412    LLVMValueRef (*fetch_input)(const struct lp_build_tgsi_gs_iface *gs_iface,
 413                                struct lp_build_tgsi_context * bld_base,
 414                                boolean is_vindex_indirect,
 415                                LLVMValueRef vertex_index,
 416                                boolean is_aindex_indirect,
 417                                LLVMValueRef attrib_index,
 418                                LLVMValueRef swizzle_index);
 419    void (*emit_vertex)(const struct lp_build_tgsi_gs_iface *gs_iface,
 420                        struct lp_build_tgsi_context * bld_base,
 421                        LLVMValueRef (*outputs)[4],
 422                        LLVMValueRef emitted_vertices_vec);
 423    void (*end_primitive)(const struct lp_build_tgsi_gs_iface *gs_iface,
 424                          struct lp_build_tgsi_context * bld_base,
 425                          LLVMValueRef verts_per_prim_vec,
 426                          LLVMValueRef emitted_prims_vec);
 427    void (*gs_epilogue)(const struct lp_build_tgsi_gs_iface *gs_iface,
 428                        struct lp_build_tgsi_context * bld_base,
 429                        LLVMValueRef total_emitted_vertices_vec,
 430                        LLVMValueRef emitted_prims_vec);
 431 };
 432
 433 struct lp_build_tgsi_soa_context
 434 {
 435    struct lp_build_tgsi_context bld_base;
 436
 437    /* Builder for scalar elements of shader's data type (float) */
 438    struct lp_build_context elem_bld;
 439
 440    const struct lp_build_tgsi_gs_iface *gs_iface;
 441    LLVMValueRef emitted_prims_vec_ptr;
 442    LLVMValueRef total_emitted_vertices_vec_ptr;
 443    LLVMValueRef emitted_vertices_vec_ptr;
 444    LLVMValueRef max_output_vertices_vec;
 445
 446    LLVMValueRef consts_ptr;
 447    LLVMValueRef const_sizes_ptr;
 448    LLVMValueRef consts[LP_MAX_TGSI_CONST_BUFFERS];
 449    LLVMValueRef consts_sizes[LP_MAX_TGSI_CONST_BUFFERS];
 450    const LLVMValueRef (*inputs)[TGSI_NUM_CHANNELS];
 451    LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS];
 452    LLVMValueRef context_ptr;
 453    LLVMValueRef thread_data_ptr;
 454
 455    const struct lp_build_sampler_soa *sampler;
 456
 457    struct tgsi_declaration_sampler_view sv[PIPE_MAX_SHADER_SAMPLER_VIEWS];
 458
 459    LLVMValueRef immediates[LP_MAX_INLINED_IMMEDIATES][TGSI_NUM_CHANNELS];
 460    LLVMValueRef temps[LP_MAX_INLINED_TEMPS][TGSI_NUM_CHANNELS];
 461    LLVMValueRef addr[LP_MAX_TGSI_ADDRS][TGSI_NUM_CHANNELS];
 462
 463    /* We allocate/use this array of temps if (1 << TGSI_FILE_TEMPORARY) is
 464     * set in the indirect_files field.
 465     * The temps[] array above is unused then.
 466     */
 467    LLVMValueRef temps_array;
 468
 469    /* We allocate/use this array of output if (1 << TGSI_FILE_OUTPUT) is
 470     * set in the indirect_files field.
 471     * The outputs[] array above is unused then.
 472     */
 473    LLVMValueRef outputs_array;
 474
 475    /* We allocate/use this array of inputs if (1 << TGSI_FILE_INPUT) is
 476     * set in the indirect_files field.
 477     * The inputs[] array above is unused then.
 478     */
 479    LLVMValueRef inputs_array;
 480
 481    /* We allocate/use this array of temps if (1 << TGSI_FILE_IMMEDIATE) is
 482     * set in the indirect_files field.
 483     */
 484    LLVMValueRef imms_array;
 485
 486
 487    struct lp_bld_tgsi_system_values system_values;
 488
 489    /** bitmask indicating which register files are accessed indirectly */
 490    unsigned indirect_files;
 491
 492    struct lp_build_mask_context *mask;
 493    struct lp_exec_mask exec_mask;
 494
 495    uint num_immediates;
 496    boolean use_immediates_array;
 497 };
 498
 499 void
 500 lp_emit_declaration_soa(
 501    struct lp_build_tgsi_context *bld,
 502    const struct tgsi_full_declaration *decl);
 503
 504 void lp_emit_immediate_soa(
 505    struct lp_build_tgsi_context *bld_base,
 506    const struct tgsi_full_immediate *imm);
 507
 508 boolean
 509 lp_emit_instruction_soa(
 510    struct lp_build_tgsi_soa_context *bld,
 511    const struct tgsi_full_instruction *inst,
 512    const struct tgsi_opcode_info *info);
 513
 514
 515 LLVMValueRef
 516 lp_get_temp_ptr_soa(
 517    struct lp_build_tgsi_soa_context *bld,
 518    unsigned index,
 519    unsigned chan);
 520
 521 LLVMValueRef
 522 lp_get_output_ptr(
 523    struct lp_build_tgsi_soa_context *bld,
 524    unsigned index,
 525    unsigned chan);
 526
 527 struct lp_build_tgsi_aos_context
 528 {
 529    struct lp_build_tgsi_context bld_base;
 530
 531    /* Builder for integer masks and indices */
 532    struct lp_build_context int_bld;
 533
 534    /*
 535     * AoS swizzle used:
 536     * - swizzles[0] = red index
 537     * - swizzles[1] = green index
 538     * - swizzles[2] = blue index
 539     * - swizzles[3] = alpha index
 540     */
 541    unsigned char swizzles[4];
 542    unsigned char inv_swizzles[4];
 543
 544    LLVMValueRef consts_ptr;
 545    const LLVMValueRef *inputs;
 546    LLVMValueRef *outputs;
 547
 548    struct lp_build_sampler_aos *sampler;
 549
 550    struct tgsi_declaration_sampler_view sv[PIPE_MAX_SHADER_SAMPLER_VIEWS];
 551
 552    LLVMValueRef immediates[LP_MAX_INLINED_IMMEDIATES];
 553    LLVMValueRef temps[LP_MAX_INLINED_TEMPS];
 554    LLVMValueRef addr[LP_MAX_TGSI_ADDRS];
 555
 556    /* We allocate/use this array of temps if (1 << TGSI_FILE_TEMPORARY) is
 557     * set in the indirect_files field.
 558     * The temps[] array above is unused then.
 559     */
 560    LLVMValueRef temps_array;
 561
 562    /** bitmask indicating which register files are accessed indirectly */
 563    unsigned indirect_files;
 564
 565 };
 566
 567 static inline struct lp_build_tgsi_soa_context *
 568 lp_soa_context(struct lp_build_tgsi_context *bld_base)
 569 {
 570    return (struct lp_build_tgsi_soa_context *)bld_base;
 571 }
 572
 573 static inline struct lp_build_tgsi_aos_context *
 574 lp_aos_context(struct lp_build_tgsi_context *bld_base)
 575 {
 576    return (struct lp_build_tgsi_aos_context *)bld_base;
 577 }
 578
 579 void
 580 lp_emit_declaration_aos(
 581    struct lp_build_tgsi_aos_context *bld,
 582    const struct tgsi_full_declaration *decl);
 583
 584
 585 boolean
 586 lp_emit_instruction_aos(
 587    struct lp_build_tgsi_aos_context *bld,
 588    const struct tgsi_full_instruction *inst,
 589    const struct tgsi_opcode_info *info,
 590    int *pc);
 591
 592 void
 593 lp_emit_store_aos(
 594    struct lp_build_tgsi_aos_context *bld,
 595    const struct tgsi_full_instruction *inst,
 596    unsigned index,
 597    LLVMValueRef value);
 598
 599 void lp_build_fetch_args(
 600    struct lp_build_tgsi_context * bld_base,
 601    struct lp_build_emit_data * emit_data);
 602
 603 LLVMValueRef
 604 lp_build_tgsi_inst_llvm_aos(
 605    struct lp_build_tgsi_context * bld_base,
 606    const struct tgsi_full_instruction *inst);
 607
 608 void
 609 lp_build_tgsi_intrinsic(
 610  const struct lp_build_tgsi_action * action,
 611  struct lp_build_tgsi_context * bld_base,
 612  struct lp_build_emit_data * emit_data);
 613
 614 LLVMValueRef
 615 lp_build_emit_llvm(
 616    struct lp_build_tgsi_context *bld_base,
 617    unsigned tgsi_opcode,
 618    struct lp_build_emit_data * emit_data);
 619
 620 LLVMValueRef
 621 lp_build_emit_llvm_unary(
 622    struct lp_build_tgsi_context *bld_base,
 623    unsigned tgsi_opcode,
 624    LLVMValueRef arg0);
 625
 626 LLVMValueRef
 627 lp_build_emit_llvm_binary(
 628    struct lp_build_tgsi_context *bld_base,
 629    unsigned tgsi_opcode,
 630    LLVMValueRef arg0,
 631    LLVMValueRef arg1);
 632
 633 LLVMValueRef
 634 lp_build_emit_llvm_ternary(
 635    struct lp_build_tgsi_context *bld_base,
 636    unsigned tgsi_opcode,
 637    LLVMValueRef arg0,
 638    LLVMValueRef arg1,
 639    LLVMValueRef arg2);
 640
 641 boolean
 642 lp_build_tgsi_inst_llvm(
 643    struct lp_build_tgsi_context * bld_base,
 644    const struct tgsi_full_instruction *inst);
 645
 646 LLVMValueRef
 647 lp_build_emit_fetch_src(
 648    struct lp_build_tgsi_context *bld_base,
 649    const struct tgsi_full_src_register *reg,
 650    enum tgsi_opcode_type stype,
 651    const unsigned chan_index);
 652
 653 LLVMValueRef
 654 lp_build_emit_fetch(
 655    struct lp_build_tgsi_context *bld_base,
 656    const struct tgsi_full_instruction *inst,
 657    unsigned src_op,
 658    const unsigned chan_index);
 659
 660
 661 LLVMValueRef
 662 lp_build_emit_fetch_texoffset(
 663    struct lp_build_tgsi_context *bld_base,
 664    const struct tgsi_full_instruction *inst,
 665    unsigned tex_off_op,
 666    const unsigned chan_index);
 667
 668 boolean
 669 lp_build_tgsi_llvm(
 670    struct lp_build_tgsi_context * bld_base,
 671    const struct tgsi_token *tokens);
 672
 673 #ifdef __cplusplus
 674 }
 675 #endif
 676
 677 #endif /* LP_BLD_TGSI_H */