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