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 vertex_id_nobase;
 166    LLVMValueRef prim_id;
 167    LLVMValueRef basevertex;
 168 };
 169
 170
 171 /**
 172  * Sampler code generation interface.
 173  *
 174  * Although texture sampling is a requirement for TGSI translation, it is
 175  * a very different problem with several different approaches to it. This
 176  * structure establishes an interface for texture sampling code generation, so
 177  * that we can easily use different texture sampling strategies.
 178  */
 179 struct lp_build_sampler_soa
 180 {
 181    void
 182    (*destroy)( struct lp_build_sampler_soa *sampler );
 183
 184    void
 185    (*emit_fetch_texel)( const struct lp_build_sampler_soa *sampler,
 186                         struct gallivm_state *gallivm,
 187                         struct lp_type type,
 188                         boolean is_fetch,
 189                         unsigned texture_index,
 190                         unsigned sampler_index,
 191                         const LLVMValueRef *coords,
 192                         const LLVMValueRef *offsets,
 193                         const struct lp_derivatives *derivs,
 194                         LLVMValueRef lod_bias, /* optional */
 195                         LLVMValueRef explicit_lod, /* optional */
 196                         enum lp_sampler_lod_property,
 197                         LLVMValueRef *texel);
 198
 199    void
 200    (*emit_size_query)( const struct lp_build_sampler_soa *sampler,
 201                        struct gallivm_state *gallivm,
 202                        struct lp_type type,
 203                        unsigned unit,
 204                        unsigned target,
 205                        boolean need_nr_mips,
 206                        enum lp_sampler_lod_property,
 207                        LLVMValueRef explicit_lod, /* optional */
 208                        LLVMValueRef *sizes_out);
 209 };
 210
 211
 212 struct lp_build_sampler_aos
 213 {
 214    LLVMValueRef
 215    (*emit_fetch_texel)( struct lp_build_sampler_aos *sampler,
 216                         struct lp_build_context *bld,
 217                         unsigned target, /* TGSI_TEXTURE_* */
 218                         unsigned unit,
 219                         LLVMValueRef coords,
 220                         const struct lp_derivatives derivs,
 221                         enum lp_build_tex_modifier modifier);
 222 };
 223
 224
 225 void
 226 lp_build_tgsi_info(const struct tgsi_token *tokens,
 227                    struct lp_tgsi_info *info);
 228
 229
 230 void
 231 lp_build_tgsi_soa(struct gallivm_state *gallivm,
 232                   const struct tgsi_token *tokens,
 233                   struct lp_type type,
 234                   struct lp_build_mask_context *mask,
 235                   LLVMValueRef consts_ptr,
 236                   LLVMValueRef const_sizes_ptr,
 237                   const struct lp_bld_tgsi_system_values *system_values,
 238                   const LLVMValueRef (*inputs)[4],
 239                   LLVMValueRef (*outputs)[4],
 240                   struct lp_build_sampler_soa *sampler,
 241                   const struct tgsi_shader_info *info,
 242                   const struct lp_build_tgsi_gs_iface *gs_iface);
 243
 244
 245 void
 246 lp_build_tgsi_aos(struct gallivm_state *gallivm,
 247                   const struct tgsi_token *tokens,
 248                   struct lp_type type,
 249                   const unsigned char swizzles[4],
 250                   LLVMValueRef consts_ptr,
 251                   const LLVMValueRef *inputs,
 252                   LLVMValueRef *outputs,
 253                   struct lp_build_sampler_aos *sampler,
 254                   const struct tgsi_shader_info *info);
 255
 256
 257 enum lp_exec_mask_break_type {
 258    LP_EXEC_MASK_BREAK_TYPE_LOOP,
 259    LP_EXEC_MASK_BREAK_TYPE_SWITCH
 260 };
 261
 262
 263 struct lp_exec_mask {
 264    struct lp_build_context *bld;
 265
 266    boolean has_mask;
 267    boolean ret_in_main;
 268
 269    LLVMTypeRef int_vec_type;
 270
 271    LLVMValueRef exec_mask;
 272
 273    LLVMValueRef ret_mask;
 274    LLVMValueRef cond_mask;
 275    LLVMValueRef switch_mask;         /* current switch exec mask */
 276    LLVMValueRef cont_mask;
 277    LLVMValueRef break_mask;
 278
 279    struct function_ctx {
 280       int pc;
 281       LLVMValueRef ret_mask;
 282
 283       LLVMValueRef cond_stack[LP_MAX_TGSI_NESTING];
 284       int cond_stack_size;
 285
 286       /* keep track if break belongs to switch or loop */
 287       enum lp_exec_mask_break_type break_type_stack[LP_MAX_TGSI_NESTING];
 288       enum lp_exec_mask_break_type break_type;
 289
 290       struct {
 291          LLVMValueRef switch_val;
 292          LLVMValueRef switch_mask;
 293          LLVMValueRef switch_mask_default;
 294          boolean switch_in_default;
 295          unsigned switch_pc;
 296       } switch_stack[LP_MAX_TGSI_NESTING];
 297       int switch_stack_size;
 298       LLVMValueRef switch_val;
 299       LLVMValueRef switch_mask_default; /* reverse of switch mask used for default */
 300       boolean switch_in_default;        /* if switch exec is currently in default */
 301       unsigned switch_pc;               /* when used points to default or endswitch-1 */
 302
 303       LLVMValueRef loop_limiter;
 304       LLVMBasicBlockRef loop_block;
 305       LLVMValueRef break_var;
 306       struct {
 307          LLVMBasicBlockRef loop_block;
 308          LLVMValueRef cont_mask;
 309          LLVMValueRef break_mask;
 310          LLVMValueRef break_var;
 311       } loop_stack[LP_MAX_TGSI_NESTING];
 312       int loop_stack_size;
 313
 314    } *function_stack;
 315    int function_stack_size;
 316 };
 317
 318 struct lp_build_tgsi_inst_list
 319 {
 320    struct tgsi_full_instruction *instructions;
 321    uint max_instructions;
 322    uint num_instructions;
 323 };
 324
 325 unsigned lp_bld_tgsi_list_init(struct lp_build_tgsi_context * bld_base);
 326
 327
 328 unsigned lp_bld_tgsi_add_instruction(
 329    struct lp_build_tgsi_context * bld_base,
 330    const struct tgsi_full_instruction *inst_to_add);
 331
 332
 333 struct lp_build_tgsi_context;
 334
 335
 336 typedef LLVMValueRef (*lp_build_emit_fetch_fn)(struct lp_build_tgsi_context *,
 337                                         const struct tgsi_full_src_register *,
 338                                         enum tgsi_opcode_type,
 339                                         unsigned);
 340
 341 struct lp_build_tgsi_context
 342 {
 343    struct lp_build_context base;
 344
 345    struct lp_build_context uint_bld;
 346    struct lp_build_context int_bld;
 347
 348    /** This array stores functions that are used to transform TGSI opcodes to
 349      * LLVM instructions.
 350      */
 351    struct lp_build_tgsi_action op_actions[TGSI_OPCODE_LAST];
 352
 353    /* TGSI_OPCODE_RSQ is defined as 1 / sqrt( abs(src0.x) ), rsq_action
 354     * should compute 1 / sqrt (src0.x) */
 355    struct lp_build_tgsi_action rsq_action;
 356
 357    struct lp_build_tgsi_action sqrt_action;
 358
 359    const struct tgsi_shader_info *info;
 360
 361    lp_build_emit_fetch_fn emit_fetch_funcs[TGSI_FILE_COUNT];
 362
 363    LLVMValueRef (*emit_swizzle)(struct lp_build_tgsi_context *,
 364                          LLVMValueRef, unsigned, unsigned, unsigned, unsigned);
 365
 366
 367    void (*emit_debug)(struct lp_build_tgsi_context *,
 368                       const struct tgsi_full_instruction *,
 369                       const struct tgsi_opcode_info *);
 370
 371    void (*emit_store)(struct lp_build_tgsi_context *,
 372                       const struct tgsi_full_instruction *,
 373                       const struct tgsi_opcode_info *,
 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
 453    const struct lp_build_sampler_soa *sampler;
 454
 455    struct tgsi_declaration_sampler_view sv[PIPE_MAX_SHADER_SAMPLER_VIEWS];
 456
 457    LLVMValueRef immediates[LP_MAX_INLINED_IMMEDIATES][TGSI_NUM_CHANNELS];
 458    LLVMValueRef temps[LP_MAX_INLINED_TEMPS][TGSI_NUM_CHANNELS];
 459    LLVMValueRef addr[LP_MAX_TGSI_ADDRS][TGSI_NUM_CHANNELS];
 460    LLVMValueRef preds[LP_MAX_TGSI_PREDS][TGSI_NUM_CHANNELS];
 461
 462    /* We allocate/use this array of temps if (1 << TGSI_FILE_TEMPORARY) is
 463     * set in the indirect_files field.
 464     * The temps[] array above is unused then.
 465     */
 466    LLVMValueRef temps_array;
 467
 468    /* We allocate/use this array of output if (1 << TGSI_FILE_OUTPUT) is
 469     * set in the indirect_files field.
 470     * The outputs[] array above is unused then.
 471     */
 472    LLVMValueRef outputs_array;
 473
 474    /* We allocate/use this array of inputs if (1 << TGSI_FILE_INPUT) is
 475     * set in the indirect_files field.
 476     * The inputs[] array above is unused then.
 477     */
 478    LLVMValueRef inputs_array;
 479
 480    /* We allocate/use this array of temps if (1 << TGSI_FILE_IMMEDIATE) is
 481     * set in the indirect_files field.
 482     */
 483    LLVMValueRef imms_array;
 484
 485
 486    struct lp_bld_tgsi_system_values system_values;
 487
 488    /** bitmask indicating which register files are accessed indirectly */
 489    unsigned indirect_files;
 490
 491    struct lp_build_mask_context *mask;
 492    struct lp_exec_mask exec_mask;
 493
 494    uint num_immediates;
 495    boolean use_immediates_array;
 496 };
 497
 498 void
 499 lp_emit_declaration_soa(
 500    struct lp_build_tgsi_context *bld,
 501    const struct tgsi_full_declaration *decl);
 502
 503 void lp_emit_immediate_soa(
 504    struct lp_build_tgsi_context *bld_base,
 505    const struct tgsi_full_immediate *imm);
 506
 507 boolean
 508 lp_emit_instruction_soa(
 509    struct lp_build_tgsi_soa_context *bld,
 510    const struct tgsi_full_instruction *inst,
 511    const struct tgsi_opcode_info *info);
 512
 513
 514 LLVMValueRef
 515 lp_get_temp_ptr_soa(
 516    struct lp_build_tgsi_soa_context *bld,
 517    unsigned index,
 518    unsigned chan);
 519
 520 LLVMValueRef
 521 lp_get_output_ptr(
 522    struct lp_build_tgsi_soa_context *bld,
 523    unsigned index,
 524    unsigned chan);
 525
 526 struct lp_build_tgsi_aos_context
 527 {
 528    struct lp_build_tgsi_context bld_base;
 529
 530    /* Builder for integer masks and indices */
 531    struct lp_build_context int_bld;
 532
 533    /*
 534     * AoS swizzle used:
 535     * - swizzles[0] = red index
 536     * - swizzles[1] = green index
 537     * - swizzles[2] = blue index
 538     * - swizzles[3] = alpha index
 539     */
 540    unsigned char swizzles[4];
 541    unsigned char inv_swizzles[4];
 542
 543    LLVMValueRef consts_ptr;
 544    const LLVMValueRef *inputs;
 545    LLVMValueRef *outputs;
 546
 547    struct lp_build_sampler_aos *sampler;
 548
 549    struct tgsi_declaration_sampler_view sv[PIPE_MAX_SHADER_SAMPLER_VIEWS];
 550
 551    LLVMValueRef immediates[LP_MAX_INLINED_IMMEDIATES];
 552    LLVMValueRef temps[LP_MAX_INLINED_TEMPS];
 553    LLVMValueRef addr[LP_MAX_TGSI_ADDRS];
 554    LLVMValueRef preds[LP_MAX_TGSI_PREDS];
 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(
 648    struct lp_build_tgsi_context *bld_base,
 649    const struct tgsi_full_instruction *inst,
 650    unsigned src_op,
 651    const unsigned chan_index);
 652
 653
 654 LLVMValueRef
 655 lp_build_emit_fetch_texoffset(
 656    struct lp_build_tgsi_context *bld_base,
 657    const struct tgsi_full_instruction *inst,
 658    unsigned tex_off_op,
 659    const unsigned chan_index);
 660
 661 boolean
 662 lp_build_tgsi_llvm(
 663    struct lp_build_tgsi_context * bld_base,
 664    const struct tgsi_token *tokens);
 665
 666 #endif /* LP_BLD_TGSI_H */