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 ~0
  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                        struct lp_type type,
 198                        unsigned unit,
 199                        unsigned target,
 200                        LLVMValueRef context_ptr,
 201                        boolean need_nr_mips,
 202                        enum lp_sampler_lod_property,
 203                        LLVMValueRef explicit_lod, /* optional */
 204                        LLVMValueRef *sizes_out);
 205 };
 206
 207
 208 struct lp_build_sampler_aos
 209 {
 210    LLVMValueRef
 211    (*emit_fetch_texel)( struct lp_build_sampler_aos *sampler,
 212                         struct lp_build_context *bld,
 213                         unsigned target, /* TGSI_TEXTURE_* */
 214                         unsigned unit,
 215                         LLVMValueRef coords,
 216                         const struct lp_derivatives derivs,
 217                         enum lp_build_tex_modifier modifier);
 218 };
 219
 220
 221 void
 222 lp_build_tgsi_info(const struct tgsi_token *tokens,
 223                    struct lp_tgsi_info *info);
 224
 225
 226 void
 227 lp_build_tgsi_soa(struct gallivm_state *gallivm,
 228                   const struct tgsi_token *tokens,
 229                   struct lp_type type,
 230                   struct lp_build_mask_context *mask,
 231                   LLVMValueRef consts_ptr,
 232                   LLVMValueRef const_sizes_ptr,
 233                   const struct lp_bld_tgsi_system_values *system_values,
 234                   const LLVMValueRef (*inputs)[4],
 235                   LLVMValueRef (*outputs)[4],
 236                   LLVMValueRef context_ptr,
 237                   LLVMValueRef thread_data_ptr,
 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    struct lp_build_context dbl_bld;
 347    /** This array stores functions that are used to transform TGSI opcodes to
 348      * LLVM instructions.
 349      */
 350    struct lp_build_tgsi_action op_actions[TGSI_OPCODE_LAST];
 351
 352    /* TGSI_OPCODE_RSQ is defined as 1 / sqrt( abs(src0.x) ), rsq_action
 353     * should compute 1 / sqrt (src0.x) */
 354    struct lp_build_tgsi_action rsq_action;
 355
 356    struct lp_build_tgsi_action sqrt_action;
 357
 358    struct lp_build_tgsi_action drsq_action;
 359
 360    struct lp_build_tgsi_action dsqrt_action;
 361    const struct tgsi_shader_info *info;
 362
 363    lp_build_emit_fetch_fn emit_fetch_funcs[TGSI_FILE_COUNT];
 364
 365    LLVMValueRef (*emit_swizzle)(struct lp_build_tgsi_context *,
 366                          LLVMValueRef, unsigned, unsigned, unsigned, unsigned);
 367
 368
 369    void (*emit_debug)(struct lp_build_tgsi_context *,
 370                       const struct tgsi_full_instruction *,
 371                       const struct tgsi_opcode_info *);
 372
 373    void (*emit_store)(struct lp_build_tgsi_context *,
 374                       const struct tgsi_full_instruction *,
 375                       const struct tgsi_opcode_info *,
 376                       LLVMValueRef dst[4]);
 377
 378    void (*emit_declaration)(struct lp_build_tgsi_context *,
 379                              const struct tgsi_full_declaration *decl);
 380
 381    void (*emit_immediate)(struct lp_build_tgsi_context *,
 382                           const struct tgsi_full_immediate *imm);
 383
 384
 385    /* Allow the user to store data in this structure rather than passing it
 386     * to every function. */
 387    void * userdata;
 388
 389    boolean soa;
 390
 391    int pc;
 392
 393    struct tgsi_full_instruction *instructions;
 394    uint max_instructions;
 395    uint num_instructions;
 396
 397    /** This function allows the user to insert some instructions at the
 398      * beginning of the program.  It is optional and does not need to be
 399      * implemented.
 400      */
 401    void (*emit_prologue)(struct lp_build_tgsi_context*);
 402
 403    /** This function allows the user to insert some instructions at the end of
 404      * the program.  This callback is intended to be used for emitting
 405      * instructions to handle the export for the output registers, but it can
 406      * be used for any purpose.  Implementing this function is optiona, but
 407      * recommended.
 408      */
 409    void (*emit_epilogue)(struct lp_build_tgsi_context*);
 410 };
 411
 412 struct lp_build_tgsi_gs_iface
 413 {
 414    LLVMValueRef (*fetch_input)(const struct lp_build_tgsi_gs_iface *gs_iface,
 415                                struct lp_build_tgsi_context * bld_base,
 416                                boolean is_vindex_indirect,
 417                                LLVMValueRef vertex_index,
 418                                boolean is_aindex_indirect,
 419                                LLVMValueRef attrib_index,
 420                                LLVMValueRef swizzle_index);
 421    void (*emit_vertex)(const struct lp_build_tgsi_gs_iface *gs_iface,
 422                        struct lp_build_tgsi_context * bld_base,
 423                        LLVMValueRef (*outputs)[4],
 424                        LLVMValueRef emitted_vertices_vec);
 425    void (*end_primitive)(const struct lp_build_tgsi_gs_iface *gs_iface,
 426                          struct lp_build_tgsi_context * bld_base,
 427                          LLVMValueRef verts_per_prim_vec,
 428                          LLVMValueRef emitted_prims_vec);
 429    void (*gs_epilogue)(const struct lp_build_tgsi_gs_iface *gs_iface,
 430                        struct lp_build_tgsi_context * bld_base,
 431                        LLVMValueRef total_emitted_vertices_vec,
 432                        LLVMValueRef emitted_prims_vec);
 433 };
 434
 435 struct lp_build_tgsi_soa_context
 436 {
 437    struct lp_build_tgsi_context bld_base;
 438
 439    /* Builder for scalar elements of shader's data type (float) */
 440    struct lp_build_context elem_bld;
 441
 442    const struct lp_build_tgsi_gs_iface *gs_iface;
 443    LLVMValueRef emitted_prims_vec_ptr;
 444    LLVMValueRef total_emitted_vertices_vec_ptr;
 445    LLVMValueRef emitted_vertices_vec_ptr;
 446    LLVMValueRef max_output_vertices_vec;
 447
 448    LLVMValueRef consts_ptr;
 449    LLVMValueRef const_sizes_ptr;
 450    LLVMValueRef consts[LP_MAX_TGSI_CONST_BUFFERS];
 451    LLVMValueRef consts_sizes[LP_MAX_TGSI_CONST_BUFFERS];
 452    const LLVMValueRef (*inputs)[TGSI_NUM_CHANNELS];
 453    LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS];
 454    LLVMValueRef context_ptr;
 455    LLVMValueRef thread_data_ptr;
 456
 457    const struct lp_build_sampler_soa *sampler;
 458
 459    struct tgsi_declaration_sampler_view sv[PIPE_MAX_SHADER_SAMPLER_VIEWS];
 460
 461    LLVMValueRef immediates[LP_MAX_INLINED_IMMEDIATES][TGSI_NUM_CHANNELS];
 462    LLVMValueRef temps[LP_MAX_INLINED_TEMPS][TGSI_NUM_CHANNELS];
 463    LLVMValueRef addr[LP_MAX_TGSI_ADDRS][TGSI_NUM_CHANNELS];
 464    LLVMValueRef preds[LP_MAX_TGSI_PREDS][TGSI_NUM_CHANNELS];
 465
 466    /* We allocate/use this array of temps if (1 << TGSI_FILE_TEMPORARY) is
 467     * set in the indirect_files field.
 468     * The temps[] array above is unused then.
 469     */
 470    LLVMValueRef temps_array;
 471
 472    /* We allocate/use this array of output if (1 << TGSI_FILE_OUTPUT) is
 473     * set in the indirect_files field.
 474     * The outputs[] array above is unused then.
 475     */
 476    LLVMValueRef outputs_array;
 477
 478    /* We allocate/use this array of inputs if (1 << TGSI_FILE_INPUT) is
 479     * set in the indirect_files field.
 480     * The inputs[] array above is unused then.
 481     */
 482    LLVMValueRef inputs_array;
 483
 484    /* We allocate/use this array of temps if (1 << TGSI_FILE_IMMEDIATE) is
 485     * set in the indirect_files field.
 486     */
 487    LLVMValueRef imms_array;
 488
 489
 490    struct lp_bld_tgsi_system_values system_values;
 491
 492    /** bitmask indicating which register files are accessed indirectly */
 493    unsigned indirect_files;
 494
 495    struct lp_build_mask_context *mask;
 496    struct lp_exec_mask exec_mask;
 497
 498    uint num_immediates;
 499    boolean use_immediates_array;
 500 };
 501
 502 void
 503 lp_emit_declaration_soa(
 504    struct lp_build_tgsi_context *bld,
 505    const struct tgsi_full_declaration *decl);
 506
 507 void lp_emit_immediate_soa(
 508    struct lp_build_tgsi_context *bld_base,
 509    const struct tgsi_full_immediate *imm);
 510
 511 boolean
 512 lp_emit_instruction_soa(
 513    struct lp_build_tgsi_soa_context *bld,
 514    const struct tgsi_full_instruction *inst,
 515    const struct tgsi_opcode_info *info);
 516
 517
 518 LLVMValueRef
 519 lp_get_temp_ptr_soa(
 520    struct lp_build_tgsi_soa_context *bld,
 521    unsigned index,
 522    unsigned chan);
 523
 524 LLVMValueRef
 525 lp_get_output_ptr(
 526    struct lp_build_tgsi_soa_context *bld,
 527    unsigned index,
 528    unsigned chan);
 529
 530 struct lp_build_tgsi_aos_context
 531 {
 532    struct lp_build_tgsi_context bld_base;
 533
 534    /* Builder for integer masks and indices */
 535    struct lp_build_context int_bld;
 536
 537    /*
 538     * AoS swizzle used:
 539     * - swizzles[0] = red index
 540     * - swizzles[1] = green index
 541     * - swizzles[2] = blue index
 542     * - swizzles[3] = alpha index
 543     */
 544    unsigned char swizzles[4];
 545    unsigned char inv_swizzles[4];
 546
 547    LLVMValueRef consts_ptr;
 548    const LLVMValueRef *inputs;
 549    LLVMValueRef *outputs;
 550
 551    struct lp_build_sampler_aos *sampler;
 552
 553    struct tgsi_declaration_sampler_view sv[PIPE_MAX_SHADER_SAMPLER_VIEWS];
 554
 555    LLVMValueRef immediates[LP_MAX_INLINED_IMMEDIATES];
 556    LLVMValueRef temps[LP_MAX_INLINED_TEMPS];
 557    LLVMValueRef addr[LP_MAX_TGSI_ADDRS];
 558    LLVMValueRef preds[LP_MAX_TGSI_PREDS];
 559
 560    /* We allocate/use this array of temps if (1 << TGSI_FILE_TEMPORARY) is
 561     * set in the indirect_files field.
 562     * The temps[] array above is unused then.
 563     */
 564    LLVMValueRef temps_array;
 565
 566    /** bitmask indicating which register files are accessed indirectly */
 567    unsigned indirect_files;
 568
 569 };
 570
 571 static inline struct lp_build_tgsi_soa_context *
 572 lp_soa_context(struct lp_build_tgsi_context *bld_base)
 573 {
 574    return (struct lp_build_tgsi_soa_context *)bld_base;
 575 }
 576
 577 static inline struct lp_build_tgsi_aos_context *
 578 lp_aos_context(struct lp_build_tgsi_context *bld_base)
 579 {
 580    return (struct lp_build_tgsi_aos_context *)bld_base;
 581 }
 582
 583 void
 584 lp_emit_declaration_aos(
 585    struct lp_build_tgsi_aos_context *bld,
 586    const struct tgsi_full_declaration *decl);
 587
 588
 589 boolean
 590 lp_emit_instruction_aos(
 591    struct lp_build_tgsi_aos_context *bld,
 592    const struct tgsi_full_instruction *inst,
 593    const struct tgsi_opcode_info *info,
 594    int *pc);
 595
 596 void
 597 lp_emit_store_aos(
 598    struct lp_build_tgsi_aos_context *bld,
 599    const struct tgsi_full_instruction *inst,
 600    unsigned index,
 601    LLVMValueRef value);
 602
 603 void lp_build_fetch_args(
 604    struct lp_build_tgsi_context * bld_base,
 605    struct lp_build_emit_data * emit_data);
 606
 607 LLVMValueRef
 608 lp_build_tgsi_inst_llvm_aos(
 609    struct lp_build_tgsi_context * bld_base,
 610    const struct tgsi_full_instruction *inst);
 611
 612 void
 613 lp_build_tgsi_intrinsic(
 614  const struct lp_build_tgsi_action * action,
 615  struct lp_build_tgsi_context * bld_base,
 616  struct lp_build_emit_data * emit_data);
 617
 618 LLVMValueRef
 619 lp_build_emit_llvm(
 620    struct lp_build_tgsi_context *bld_base,
 621    unsigned tgsi_opcode,
 622    struct lp_build_emit_data * emit_data);
 623
 624 LLVMValueRef
 625 lp_build_emit_llvm_unary(
 626    struct lp_build_tgsi_context *bld_base,
 627    unsigned tgsi_opcode,
 628    LLVMValueRef arg0);
 629
 630 LLVMValueRef
 631 lp_build_emit_llvm_binary(
 632    struct lp_build_tgsi_context *bld_base,
 633    unsigned tgsi_opcode,
 634    LLVMValueRef arg0,
 635    LLVMValueRef arg1);
 636
 637 LLVMValueRef
 638 lp_build_emit_llvm_ternary(
 639    struct lp_build_tgsi_context *bld_base,
 640    unsigned tgsi_opcode,
 641    LLVMValueRef arg0,
 642    LLVMValueRef arg1,
 643    LLVMValueRef arg2);
 644
 645 boolean
 646 lp_build_tgsi_inst_llvm(
 647    struct lp_build_tgsi_context * bld_base,
 648    const struct tgsi_full_instruction *inst);
 649
 650 LLVMValueRef
 651 lp_build_emit_fetch(
 652    struct lp_build_tgsi_context *bld_base,
 653    const struct tgsi_full_instruction *inst,
 654    unsigned src_op,
 655    const unsigned chan_index);
 656
 657
 658 LLVMValueRef
 659 lp_build_emit_fetch_texoffset(
 660    struct lp_build_tgsi_context *bld_base,
 661    const struct tgsi_full_instruction *inst,
 662    unsigned tex_off_op,
 663    const unsigned chan_index);
 664
 665 boolean
 666 lp_build_tgsi_llvm(
 667    struct lp_build_tgsi_context * bld_base,
 668    const struct tgsi_token *tokens);
 669
 670 #ifdef __cplusplus
 671 }
 672 #endif
 673
 674 #endif /* LP_BLD_TGSI_H */