2 * Copyright 2016 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
24 #include "si_shader_internal.h"
26 #include "radeon/radeon_elf_util.h"
28 #include "gallivm/lp_bld_const.h"
29 #include "gallivm/lp_bld_gather.h"
30 #include "gallivm/lp_bld_flow.h"
31 #include "gallivm/lp_bld_init.h"
32 #include "gallivm/lp_bld_intr.h"
33 #include "gallivm/lp_bld_misc.h"
34 #include "gallivm/lp_bld_swizzle.h"
35 #include "tgsi/tgsi_info.h"
36 #include "tgsi/tgsi_parse.h"
37 #include "util/u_math.h"
38 #include "util/u_memory.h"
39 #include "util/u_debug.h"
42 #include <llvm-c/Transforms/IPO.h>
43 #include <llvm-c/Transforms/Scalar.h>
45 /* Data for if/else/endif and bgnloop/endloop control flow structures.
48 /* Loop exit or next part of if/else/endif. */
49 LLVMBasicBlockRef next_block
;
50 LLVMBasicBlockRef loop_entry_block
;
53 #define CPU_STRING_LEN 30
54 #define FS_STRING_LEN 30
55 #define TRIPLE_STRING_LEN 7
58 * Shader types for the LLVM backend.
60 enum si_llvm_shader_type
{
61 RADEON_LLVM_SHADER_PS
= 0,
62 RADEON_LLVM_SHADER_VS
= 1,
63 RADEON_LLVM_SHADER_GS
= 2,
64 RADEON_LLVM_SHADER_CS
= 3,
67 enum si_llvm_calling_convention
{
68 RADEON_LLVM_AMDGPU_VS
= 87,
69 RADEON_LLVM_AMDGPU_GS
= 88,
70 RADEON_LLVM_AMDGPU_PS
= 89,
71 RADEON_LLVM_AMDGPU_CS
= 90,
74 void si_llvm_add_attribute(LLVMValueRef F
, const char *name
, int value
)
78 snprintf(str
, sizeof(str
), "%i", value
);
79 LLVMAddTargetDependentFunctionAttr(F
, name
, str
);
83 * Set the shader type we want to compile
85 * @param type shader type to set
87 void si_llvm_shader_type(LLVMValueRef F
, unsigned type
)
89 enum si_llvm_shader_type llvm_type
;
90 enum si_llvm_calling_convention calling_conv
;
93 case PIPE_SHADER_VERTEX
:
94 case PIPE_SHADER_TESS_CTRL
:
95 case PIPE_SHADER_TESS_EVAL
:
96 llvm_type
= RADEON_LLVM_SHADER_VS
;
97 calling_conv
= RADEON_LLVM_AMDGPU_VS
;
99 case PIPE_SHADER_GEOMETRY
:
100 llvm_type
= RADEON_LLVM_SHADER_GS
;
101 calling_conv
= RADEON_LLVM_AMDGPU_GS
;
103 case PIPE_SHADER_FRAGMENT
:
104 llvm_type
= RADEON_LLVM_SHADER_PS
;
105 calling_conv
= RADEON_LLVM_AMDGPU_PS
;
107 case PIPE_SHADER_COMPUTE
:
108 llvm_type
= RADEON_LLVM_SHADER_CS
;
109 calling_conv
= RADEON_LLVM_AMDGPU_CS
;
112 unreachable("Unhandle shader type");
115 if (HAVE_LLVM
>= 0x309)
116 LLVMSetFunctionCallConv(F
, calling_conv
);
118 si_llvm_add_attribute(F
, "ShaderType", llvm_type
);
121 static void init_amdgpu_target()
123 gallivm_init_llvm_targets();
124 #if HAVE_LLVM < 0x0307
125 LLVMInitializeR600TargetInfo();
126 LLVMInitializeR600Target();
127 LLVMInitializeR600TargetMC();
128 LLVMInitializeR600AsmPrinter();
130 LLVMInitializeAMDGPUTargetInfo();
131 LLVMInitializeAMDGPUTarget();
132 LLVMInitializeAMDGPUTargetMC();
133 LLVMInitializeAMDGPUAsmPrinter();
138 static once_flag init_amdgpu_target_once_flag
= ONCE_FLAG_INIT
;
140 LLVMTargetRef
si_llvm_get_amdgpu_target(const char *triple
)
142 LLVMTargetRef target
= NULL
;
143 char *err_message
= NULL
;
145 call_once(&init_amdgpu_target_once_flag
, init_amdgpu_target
);
147 if (LLVMGetTargetFromTriple(triple
, &target
, &err_message
)) {
148 fprintf(stderr
, "Cannot find target for triple %s ", triple
);
150 fprintf(stderr
, "%s\n", err_message
);
152 LLVMDisposeMessage(err_message
);
158 struct si_llvm_diagnostics
{
159 struct pipe_debug_callback
*debug
;
163 static void si_diagnostic_handler(LLVMDiagnosticInfoRef di
, void *context
)
165 struct si_llvm_diagnostics
*diag
= (struct si_llvm_diagnostics
*)context
;
166 LLVMDiagnosticSeverity severity
= LLVMGetDiagInfoSeverity(di
);
167 char *description
= LLVMGetDiagInfoDescription(di
);
168 const char *severity_str
= NULL
;
172 severity_str
= "error";
175 severity_str
= "warning";
178 severity_str
= "remark";
181 severity_str
= "note";
184 severity_str
= "unknown";
187 pipe_debug_message(diag
->debug
, SHADER_INFO
,
188 "LLVM diagnostic (%s): %s", severity_str
, description
);
190 if (severity
== LLVMDSError
) {
192 fprintf(stderr
,"LLVM triggered Diagnostic Handler: %s\n", description
);
195 LLVMDisposeMessage(description
);
199 * Compile an LLVM module to machine code.
201 * @returns 0 for success, 1 for failure
203 unsigned si_llvm_compile(LLVMModuleRef M
, struct radeon_shader_binary
*binary
,
204 LLVMTargetMachineRef tm
,
205 struct pipe_debug_callback
*debug
)
207 struct si_llvm_diagnostics diag
;
209 LLVMContextRef llvm_ctx
;
210 LLVMMemoryBufferRef out_buffer
;
211 unsigned buffer_size
;
212 const char *buffer_data
;
218 /* Setup Diagnostic Handler*/
219 llvm_ctx
= LLVMGetModuleContext(M
);
221 LLVMContextSetDiagnosticHandler(llvm_ctx
, si_diagnostic_handler
, &diag
);
224 mem_err
= LLVMTargetMachineEmitToMemoryBuffer(tm
, M
, LLVMObjectFile
, &err
,
227 /* Process Errors/Warnings */
229 fprintf(stderr
, "%s: %s", __FUNCTION__
, err
);
230 pipe_debug_message(debug
, SHADER_INFO
,
231 "LLVM emit error: %s", err
);
237 /* Extract Shader Code*/
238 buffer_size
= LLVMGetBufferSize(out_buffer
);
239 buffer_data
= LLVMGetBufferStart(out_buffer
);
241 radeon_elf_read(buffer_data
, buffer_size
, binary
);
244 LLVMDisposeMemoryBuffer(out_buffer
);
247 if (diag
.retval
!= 0)
248 pipe_debug_message(debug
, SHADER_INFO
, "LLVM compile failed");
252 LLVMTypeRef
tgsi2llvmtype(struct lp_build_tgsi_context
*bld_base
,
253 enum tgsi_opcode_type type
)
255 LLVMContextRef ctx
= bld_base
->base
.gallivm
->context
;
258 case TGSI_TYPE_UNSIGNED
:
259 case TGSI_TYPE_SIGNED
:
260 return LLVMInt32TypeInContext(ctx
);
261 case TGSI_TYPE_UNSIGNED64
:
262 case TGSI_TYPE_SIGNED64
:
263 return LLVMInt64TypeInContext(ctx
);
264 case TGSI_TYPE_DOUBLE
:
265 return LLVMDoubleTypeInContext(ctx
);
266 case TGSI_TYPE_UNTYPED
:
267 case TGSI_TYPE_FLOAT
:
268 return LLVMFloatTypeInContext(ctx
);
274 LLVMValueRef
bitcast(struct lp_build_tgsi_context
*bld_base
,
275 enum tgsi_opcode_type type
, LLVMValueRef value
)
277 LLVMBuilderRef builder
= bld_base
->base
.gallivm
->builder
;
278 LLVMTypeRef dst_type
= tgsi2llvmtype(bld_base
, type
);
281 return LLVMBuildBitCast(builder
, value
, dst_type
, "");
287 * Return a value that is equal to the given i32 \p index if it lies in [0,num)
288 * or an undefined value in the same interval otherwise.
290 LLVMValueRef
si_llvm_bound_index(struct si_shader_context
*ctx
,
294 struct gallivm_state
*gallivm
= &ctx
->gallivm
;
295 LLVMBuilderRef builder
= gallivm
->builder
;
296 LLVMValueRef c_max
= lp_build_const_int32(gallivm
, num
- 1);
299 if (util_is_power_of_two(num
)) {
300 index
= LLVMBuildAnd(builder
, index
, c_max
, "");
302 /* In theory, this MAX pattern should result in code that is
303 * as good as the bit-wise AND above.
305 * In practice, LLVM generates worse code (at the time of
306 * writing), because its value tracking is not strong enough.
308 cc
= LLVMBuildICmp(builder
, LLVMIntULE
, index
, c_max
, "");
309 index
= LLVMBuildSelect(builder
, cc
, index
, c_max
, "");
315 static struct si_llvm_flow
*
316 get_current_flow(struct si_shader_context
*ctx
)
318 if (ctx
->flow_depth
> 0)
319 return &ctx
->flow
[ctx
->flow_depth
- 1];
323 static struct si_llvm_flow
*
324 get_innermost_loop(struct si_shader_context
*ctx
)
326 for (unsigned i
= ctx
->flow_depth
; i
> 0; --i
) {
327 if (ctx
->flow
[i
- 1].loop_entry_block
)
328 return &ctx
->flow
[i
- 1];
333 static struct si_llvm_flow
*
334 push_flow(struct si_shader_context
*ctx
)
336 struct si_llvm_flow
*flow
;
338 if (ctx
->flow_depth
>= ctx
->flow_depth_max
) {
339 unsigned new_max
= MAX2(ctx
->flow_depth
<< 1, RADEON_LLVM_INITIAL_CF_DEPTH
);
340 ctx
->flow
= REALLOC(ctx
->flow
,
341 ctx
->flow_depth_max
* sizeof(*ctx
->flow
),
342 new_max
* sizeof(*ctx
->flow
));
343 ctx
->flow_depth_max
= new_max
;
346 flow
= &ctx
->flow
[ctx
->flow_depth
];
349 flow
->next_block
= NULL
;
350 flow
->loop_entry_block
= NULL
;
354 static LLVMValueRef
emit_swizzle(struct lp_build_tgsi_context
*bld_base
,
361 LLVMValueRef swizzles
[4];
363 LLVMInt32TypeInContext(bld_base
->base
.gallivm
->context
);
365 swizzles
[0] = LLVMConstInt(i32t
, swizzle_x
, 0);
366 swizzles
[1] = LLVMConstInt(i32t
, swizzle_y
, 0);
367 swizzles
[2] = LLVMConstInt(i32t
, swizzle_z
, 0);
368 swizzles
[3] = LLVMConstInt(i32t
, swizzle_w
, 0);
370 return LLVMBuildShuffleVector(bld_base
->base
.gallivm
->builder
,
372 LLVMGetUndef(LLVMTypeOf(value
)),
373 LLVMConstVector(swizzles
, 4), "");
377 * Return the description of the array covering the given temporary register
381 get_temp_array_id(struct lp_build_tgsi_context
*bld_base
,
383 const struct tgsi_ind_register
*reg
)
385 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
386 unsigned num_arrays
= ctx
->bld_base
.info
->array_max
[TGSI_FILE_TEMPORARY
];
389 if (reg
&& reg
->ArrayID
> 0 && reg
->ArrayID
<= num_arrays
)
392 for (i
= 0; i
< num_arrays
; i
++) {
393 const struct tgsi_array_info
*array
= &ctx
->temp_arrays
[i
];
395 if (reg_index
>= array
->range
.First
&& reg_index
<= array
->range
.Last
)
402 static struct tgsi_declaration_range
403 get_array_range(struct lp_build_tgsi_context
*bld_base
,
404 unsigned File
, unsigned reg_index
,
405 const struct tgsi_ind_register
*reg
)
407 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
408 struct tgsi_declaration_range range
;
410 if (File
== TGSI_FILE_TEMPORARY
) {
411 unsigned array_id
= get_temp_array_id(bld_base
, reg_index
, reg
);
413 return ctx
->temp_arrays
[array_id
- 1].range
;
417 range
.Last
= bld_base
->info
->file_max
[File
];
422 emit_array_index(struct si_shader_context
*ctx
,
423 const struct tgsi_ind_register
*reg
,
426 struct gallivm_state
*gallivm
= ctx
->bld_base
.base
.gallivm
;
429 return lp_build_const_int32(gallivm
, offset
);
431 LLVMValueRef addr
= LLVMBuildLoad(gallivm
->builder
, ctx
->addrs
[reg
->Index
][reg
->Swizzle
], "");
432 return LLVMBuildAdd(gallivm
->builder
, addr
, lp_build_const_int32(gallivm
, offset
), "");
436 * For indirect registers, construct a pointer directly to the requested
437 * element using getelementptr if possible.
439 * Returns NULL if the insertelement/extractelement fallback for array access
443 get_pointer_into_array(struct si_shader_context
*ctx
,
447 const struct tgsi_ind_register
*reg_indirect
)
450 struct tgsi_array_info
*array
;
451 struct gallivm_state
*gallivm
= ctx
->bld_base
.base
.gallivm
;
452 LLVMBuilderRef builder
= gallivm
->builder
;
453 LLVMValueRef idxs
[2];
457 if (file
!= TGSI_FILE_TEMPORARY
)
460 array_id
= get_temp_array_id(&ctx
->bld_base
, reg_index
, reg_indirect
);
464 alloca
= ctx
->temp_array_allocas
[array_id
- 1];
468 array
= &ctx
->temp_arrays
[array_id
- 1];
470 if (!(array
->writemask
& (1 << swizzle
)))
471 return ctx
->undef_alloca
;
473 index
= emit_array_index(ctx
, reg_indirect
,
474 reg_index
- ctx
->temp_arrays
[array_id
- 1].range
.First
);
476 /* Ensure that the index is within a valid range, to guard against
477 * VM faults and overwriting critical data (e.g. spilled resource
480 * TODO It should be possible to avoid the additional instructions
481 * if LLVM is changed so that it guarantuees:
482 * 1. the scratch space descriptor isolates the current wave (this
483 * could even save the scratch offset SGPR at the cost of an
484 * additional SALU instruction)
485 * 2. the memory for allocas must be allocated at the _end_ of the
486 * scratch space (after spilled registers)
488 index
= si_llvm_bound_index(ctx
, index
, array
->range
.Last
- array
->range
.First
+ 1);
490 index
= LLVMBuildMul(
492 lp_build_const_int32(gallivm
, util_bitcount(array
->writemask
)),
494 index
= LLVMBuildAdd(
496 lp_build_const_int32(
498 util_bitcount(array
->writemask
& ((1 << swizzle
) - 1))),
500 idxs
[0] = ctx
->bld_base
.uint_bld
.zero
;
502 return LLVMBuildGEP(builder
, alloca
, idxs
, 2, "");
506 si_llvm_emit_fetch_64bit(struct lp_build_tgsi_context
*bld_base
,
507 enum tgsi_opcode_type type
,
511 LLVMBuilderRef builder
= bld_base
->base
.gallivm
->builder
;
514 result
= LLVMGetUndef(LLVMVectorType(LLVMIntTypeInContext(bld_base
->base
.gallivm
->context
, 32), bld_base
->base
.type
.length
* 2));
516 result
= LLVMBuildInsertElement(builder
,
518 bitcast(bld_base
, TGSI_TYPE_UNSIGNED
, ptr
),
519 bld_base
->int_bld
.zero
, "");
520 result
= LLVMBuildInsertElement(builder
,
522 bitcast(bld_base
, TGSI_TYPE_UNSIGNED
, ptr2
),
523 bld_base
->int_bld
.one
, "");
524 return bitcast(bld_base
, type
, result
);
528 emit_array_fetch(struct lp_build_tgsi_context
*bld_base
,
529 unsigned File
, enum tgsi_opcode_type type
,
530 struct tgsi_declaration_range range
,
533 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
534 struct gallivm_state
*gallivm
= ctx
->bld_base
.base
.gallivm
;
536 LLVMBuilderRef builder
= bld_base
->base
.gallivm
->builder
;
538 unsigned i
, size
= range
.Last
- range
.First
+ 1;
539 LLVMTypeRef vec
= LLVMVectorType(tgsi2llvmtype(bld_base
, type
), size
);
540 LLVMValueRef result
= LLVMGetUndef(vec
);
542 struct tgsi_full_src_register tmp_reg
= {};
543 tmp_reg
.Register
.File
= File
;
545 for (i
= 0; i
< size
; ++i
) {
546 tmp_reg
.Register
.Index
= i
+ range
.First
;
547 LLVMValueRef temp
= si_llvm_emit_fetch(bld_base
, &tmp_reg
, type
, swizzle
);
548 result
= LLVMBuildInsertElement(builder
, result
, temp
,
549 lp_build_const_int32(gallivm
, i
), "array_vector");
555 load_value_from_array(struct lp_build_tgsi_context
*bld_base
,
557 enum tgsi_opcode_type type
,
560 const struct tgsi_ind_register
*reg_indirect
)
562 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
563 struct gallivm_state
*gallivm
= bld_base
->base
.gallivm
;
564 LLVMBuilderRef builder
= gallivm
->builder
;
567 ptr
= get_pointer_into_array(ctx
, file
, swizzle
, reg_index
, reg_indirect
);
569 LLVMValueRef val
= LLVMBuildLoad(builder
, ptr
, "");
570 if (tgsi_type_is_64bit(type
)) {
571 LLVMValueRef ptr_hi
, val_hi
;
572 ptr_hi
= LLVMBuildGEP(builder
, ptr
, &bld_base
->uint_bld
.one
, 1, "");
573 val_hi
= LLVMBuildLoad(builder
, ptr_hi
, "");
574 val
= si_llvm_emit_fetch_64bit(bld_base
, type
, val
, val_hi
);
579 struct tgsi_declaration_range range
=
580 get_array_range(bld_base
, file
, reg_index
, reg_indirect
);
582 emit_array_index(ctx
, reg_indirect
, reg_index
- range
.First
);
584 emit_array_fetch(bld_base
, file
, type
, range
, swizzle
);
585 return LLVMBuildExtractElement(builder
, array
, index
, "");
590 store_value_to_array(struct lp_build_tgsi_context
*bld_base
,
595 const struct tgsi_ind_register
*reg_indirect
)
597 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
598 struct gallivm_state
*gallivm
= bld_base
->base
.gallivm
;
599 LLVMBuilderRef builder
= gallivm
->builder
;
602 ptr
= get_pointer_into_array(ctx
, file
, chan_index
, reg_index
, reg_indirect
);
604 LLVMBuildStore(builder
, value
, ptr
);
607 struct tgsi_declaration_range range
= get_array_range(bld_base
, file
, reg_index
, reg_indirect
);
608 LLVMValueRef index
= emit_array_index(ctx
, reg_indirect
, reg_index
- range
.First
);
610 emit_array_fetch(bld_base
, file
, TGSI_TYPE_FLOAT
, range
, chan_index
);
611 LLVMValueRef temp_ptr
;
613 array
= LLVMBuildInsertElement(builder
, array
, value
, index
, "");
615 size
= range
.Last
- range
.First
+ 1;
616 for (i
= 0; i
< size
; ++i
) {
618 case TGSI_FILE_OUTPUT
:
619 temp_ptr
= ctx
->outputs
[i
+ range
.First
][chan_index
];
622 case TGSI_FILE_TEMPORARY
:
623 if (range
.First
+ i
>= ctx
->temps_count
)
625 temp_ptr
= ctx
->temps
[(i
+ range
.First
) * TGSI_NUM_CHANNELS
+ chan_index
];
631 value
= LLVMBuildExtractElement(builder
, array
,
632 lp_build_const_int32(gallivm
, i
), "");
633 LLVMBuildStore(builder
, value
, temp_ptr
);
638 /* If this is true, preload FS inputs at the beginning of shaders. Otherwise,
639 * reload them at each use. This must be true if the shader is using
640 * derivatives, because all inputs should be loaded in the WQM mode.
642 static bool si_preload_fs_inputs(struct si_shader_context
*ctx
)
644 return ctx
->shader
->selector
->info
.uses_derivatives
;
648 get_output_ptr(struct lp_build_tgsi_context
*bld_base
, unsigned index
,
651 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
653 assert(index
<= ctx
->bld_base
.info
->file_max
[TGSI_FILE_OUTPUT
]);
654 return ctx
->outputs
[index
][chan
];
657 LLVMValueRef
si_llvm_emit_fetch(struct lp_build_tgsi_context
*bld_base
,
658 const struct tgsi_full_src_register
*reg
,
659 enum tgsi_opcode_type type
,
662 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
663 LLVMBuilderRef builder
= bld_base
->base
.gallivm
->builder
;
664 LLVMValueRef result
= NULL
, ptr
, ptr2
;
667 LLVMValueRef values
[TGSI_NUM_CHANNELS
];
669 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
670 values
[chan
] = si_llvm_emit_fetch(bld_base
, reg
, type
, chan
);
672 return lp_build_gather_values(bld_base
->base
.gallivm
, values
,
676 if (reg
->Register
.Indirect
) {
677 LLVMValueRef load
= load_value_from_array(bld_base
, reg
->Register
.File
, type
,
678 swizzle
, reg
->Register
.Index
, ®
->Indirect
);
679 return bitcast(bld_base
, type
, load
);
682 switch(reg
->Register
.File
) {
683 case TGSI_FILE_IMMEDIATE
: {
684 LLVMTypeRef ctype
= tgsi2llvmtype(bld_base
, type
);
685 if (tgsi_type_is_64bit(type
)) {
686 result
= LLVMGetUndef(LLVMVectorType(LLVMIntTypeInContext(bld_base
->base
.gallivm
->context
, 32), bld_base
->base
.type
.length
* 2));
687 result
= LLVMConstInsertElement(result
,
688 ctx
->imms
[reg
->Register
.Index
* TGSI_NUM_CHANNELS
+ swizzle
],
689 bld_base
->int_bld
.zero
);
690 result
= LLVMConstInsertElement(result
,
691 ctx
->imms
[reg
->Register
.Index
* TGSI_NUM_CHANNELS
+ swizzle
+ 1],
692 bld_base
->int_bld
.one
);
693 return LLVMConstBitCast(result
, ctype
);
695 return LLVMConstBitCast(ctx
->imms
[reg
->Register
.Index
* TGSI_NUM_CHANNELS
+ swizzle
], ctype
);
699 case TGSI_FILE_INPUT
: {
700 unsigned index
= reg
->Register
.Index
;
701 LLVMValueRef input
[4];
703 /* I don't think doing this for vertex shaders is beneficial.
704 * For those, we want to make sure the VMEM loads are executed
705 * only once. Fragment shaders don't care much, because
706 * v_interp instructions are much cheaper than VMEM loads.
708 if (!si_preload_fs_inputs(ctx
) &&
709 ctx
->bld_base
.info
->processor
== PIPE_SHADER_FRAGMENT
)
710 ctx
->load_input(ctx
, index
, &ctx
->input_decls
[index
], input
);
712 memcpy(input
, &ctx
->inputs
[index
* 4], sizeof(input
));
714 result
= input
[swizzle
];
716 if (tgsi_type_is_64bit(type
)) {
718 ptr2
= input
[swizzle
+ 1];
719 return si_llvm_emit_fetch_64bit(bld_base
, type
, ptr
, ptr2
);
724 case TGSI_FILE_TEMPORARY
:
725 if (reg
->Register
.Index
>= ctx
->temps_count
)
726 return LLVMGetUndef(tgsi2llvmtype(bld_base
, type
));
727 ptr
= ctx
->temps
[reg
->Register
.Index
* TGSI_NUM_CHANNELS
+ swizzle
];
728 if (tgsi_type_is_64bit(type
)) {
729 ptr2
= ctx
->temps
[reg
->Register
.Index
* TGSI_NUM_CHANNELS
+ swizzle
+ 1];
730 return si_llvm_emit_fetch_64bit(bld_base
, type
,
731 LLVMBuildLoad(builder
, ptr
, ""),
732 LLVMBuildLoad(builder
, ptr2
, ""));
734 result
= LLVMBuildLoad(builder
, ptr
, "");
737 case TGSI_FILE_OUTPUT
:
738 ptr
= get_output_ptr(bld_base
, reg
->Register
.Index
, swizzle
);
739 if (tgsi_type_is_64bit(type
)) {
740 ptr2
= get_output_ptr(bld_base
, reg
->Register
.Index
, swizzle
+ 1);
741 return si_llvm_emit_fetch_64bit(bld_base
, type
,
742 LLVMBuildLoad(builder
, ptr
, ""),
743 LLVMBuildLoad(builder
, ptr2
, ""));
745 result
= LLVMBuildLoad(builder
, ptr
, "");
749 return LLVMGetUndef(tgsi2llvmtype(bld_base
, type
));
752 return bitcast(bld_base
, type
, result
);
755 static LLVMValueRef
fetch_system_value(struct lp_build_tgsi_context
*bld_base
,
756 const struct tgsi_full_src_register
*reg
,
757 enum tgsi_opcode_type type
,
760 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
761 struct gallivm_state
*gallivm
= bld_base
->base
.gallivm
;
763 LLVMValueRef cval
= ctx
->system_values
[reg
->Register
.Index
];
764 if (LLVMGetTypeKind(LLVMTypeOf(cval
)) == LLVMVectorTypeKind
) {
765 cval
= LLVMBuildExtractElement(gallivm
->builder
, cval
,
766 lp_build_const_int32(gallivm
, swizzle
), "");
768 return bitcast(bld_base
, type
, cval
);
771 static void emit_declaration(struct lp_build_tgsi_context
*bld_base
,
772 const struct tgsi_full_declaration
*decl
)
774 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
775 LLVMBuilderRef builder
= bld_base
->base
.gallivm
->builder
;
776 unsigned first
, last
, i
;
777 switch(decl
->Declaration
.File
) {
778 case TGSI_FILE_ADDRESS
:
781 for (idx
= decl
->Range
.First
; idx
<= decl
->Range
.Last
; idx
++) {
783 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
784 ctx
->addrs
[idx
][chan
] = lp_build_alloca_undef(
786 ctx
->bld_base
.uint_bld
.elem_type
, "");
792 case TGSI_FILE_TEMPORARY
:
795 LLVMValueRef array_alloca
= NULL
;
797 unsigned writemask
= decl
->Declaration
.UsageMask
;
798 first
= decl
->Range
.First
;
799 last
= decl
->Range
.Last
;
800 decl_size
= 4 * ((last
- first
) + 1);
802 if (decl
->Declaration
.Array
) {
803 unsigned id
= decl
->Array
.ArrayID
- 1;
806 writemask
&= ctx
->temp_arrays
[id
].writemask
;
807 ctx
->temp_arrays
[id
].writemask
= writemask
;
808 array_size
= ((last
- first
) + 1) * util_bitcount(writemask
);
810 /* If the array has more than 16 elements, store it
811 * in memory using an alloca that spans the entire
814 * Otherwise, store each array element individually.
815 * We will then generate vectors (per-channel, up to
816 * <16 x float> if the usagemask is a single bit) for
817 * indirect addressing.
819 * Note that 16 is the number of vector elements that
820 * LLVM will store in a register, so theoretically an
821 * array with up to 4 * 16 = 64 elements could be
822 * handled this way, but whether that's a good idea
823 * depends on VGPR register pressure elsewhere.
825 * FIXME: We shouldn't need to have the non-alloca
826 * code path for arrays. LLVM should be smart enough to
827 * promote allocas into registers when profitable.
829 * LLVM 3.8 crashes with this.
831 if (HAVE_LLVM
>= 0x0309 && array_size
> 16) {
832 array_alloca
= LLVMBuildAlloca(builder
,
833 LLVMArrayType(bld_base
->base
.vec_type
,
834 array_size
), "array");
835 ctx
->temp_array_allocas
[id
] = array_alloca
;
839 if (!ctx
->temps_count
) {
840 ctx
->temps_count
= bld_base
->info
->file_max
[TGSI_FILE_TEMPORARY
] + 1;
841 ctx
->temps
= MALLOC(TGSI_NUM_CHANNELS
* ctx
->temps_count
* sizeof(LLVMValueRef
));
844 for (i
= 0; i
< decl_size
; ++i
) {
846 snprintf(name
, sizeof(name
), "TEMP%d.%c",
847 first
+ i
/ 4, "xyzw"[i
% 4]);
849 ctx
->temps
[first
* TGSI_NUM_CHANNELS
+ i
] =
850 lp_build_alloca_undef(bld_base
->base
.gallivm
,
851 bld_base
->base
.vec_type
,
855 LLVMValueRef idxs
[2] = {
856 bld_base
->uint_bld
.zero
,
861 if (writemask
!= TGSI_WRITEMASK_XYZW
&&
862 !ctx
->undef_alloca
) {
863 /* Create a dummy alloca. We use it so that we
864 * have a pointer that is safe to load from if
865 * a shader ever reads from a channel that
866 * it never writes to.
868 ctx
->undef_alloca
= lp_build_alloca_undef(
869 bld_base
->base
.gallivm
,
870 bld_base
->base
.vec_type
, "undef");
873 for (i
= 0; i
< decl_size
; ++i
) {
875 if (writemask
& (1 << (i
% 4))) {
877 snprintf(name
, sizeof(name
), "TEMP%d.%c",
878 first
+ i
/ 4, "xyzw"[i
% 4]);
880 idxs
[1] = lp_build_const_int32(bld_base
->base
.gallivm
, j
);
881 ptr
= LLVMBuildGEP(builder
, array_alloca
, idxs
, 2, name
);
884 ptr
= ctx
->undef_alloca
;
886 ctx
->temps
[first
* TGSI_NUM_CHANNELS
+ i
] = ptr
;
891 case TGSI_FILE_INPUT
:
894 for (idx
= decl
->Range
.First
; idx
<= decl
->Range
.Last
; idx
++) {
895 if (ctx
->load_input
&&
896 ctx
->input_decls
[idx
].Declaration
.File
!= TGSI_FILE_INPUT
) {
897 ctx
->input_decls
[idx
] = *decl
;
898 ctx
->input_decls
[idx
].Range
.First
= idx
;
899 ctx
->input_decls
[idx
].Range
.Last
= idx
;
900 ctx
->input_decls
[idx
].Semantic
.Index
+= idx
- decl
->Range
.First
;
902 if (si_preload_fs_inputs(ctx
) ||
903 bld_base
->info
->processor
!= PIPE_SHADER_FRAGMENT
)
904 ctx
->load_input(ctx
, idx
, &ctx
->input_decls
[idx
],
905 &ctx
->inputs
[idx
* 4]);
911 case TGSI_FILE_SYSTEM_VALUE
:
914 for (idx
= decl
->Range
.First
; idx
<= decl
->Range
.Last
; idx
++) {
915 ctx
->load_system_value(ctx
, idx
, decl
);
920 case TGSI_FILE_OUTPUT
:
924 for (idx
= decl
->Range
.First
; idx
<= decl
->Range
.Last
; idx
++) {
926 assert(idx
< RADEON_LLVM_MAX_OUTPUTS
);
927 if (ctx
->outputs
[idx
][0])
929 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
931 snprintf(name
, sizeof(name
), "OUT%d.%c",
932 idx
, "xyzw"[chan
% 4]);
934 ctx
->outputs
[idx
][chan
] = lp_build_alloca_undef(
936 ctx
->bld_base
.base
.elem_type
, name
);
942 case TGSI_FILE_MEMORY
:
943 ctx
->declare_memory_region(ctx
, decl
);
951 LLVMValueRef
si_llvm_saturate(struct lp_build_tgsi_context
*bld_base
,
954 struct lp_build_emit_data clamp_emit_data
;
956 memset(&clamp_emit_data
, 0, sizeof(clamp_emit_data
));
957 clamp_emit_data
.arg_count
= 3;
958 clamp_emit_data
.args
[0] = value
;
959 clamp_emit_data
.args
[2] = bld_base
->base
.one
;
960 clamp_emit_data
.args
[1] = bld_base
->base
.zero
;
962 return lp_build_emit_llvm(bld_base
, TGSI_OPCODE_CLAMP
,
966 void si_llvm_emit_store(struct lp_build_tgsi_context
*bld_base
,
967 const struct tgsi_full_instruction
*inst
,
968 const struct tgsi_opcode_info
*info
,
971 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
972 struct gallivm_state
*gallivm
= ctx
->bld_base
.base
.gallivm
;
973 const struct tgsi_full_dst_register
*reg
= &inst
->Dst
[0];
974 LLVMBuilderRef builder
= ctx
->bld_base
.base
.gallivm
->builder
;
975 LLVMValueRef temp_ptr
, temp_ptr2
= NULL
;
976 unsigned chan
, chan_index
;
977 bool is_vec_store
= false;
978 enum tgsi_opcode_type dtype
= tgsi_opcode_infer_dst_type(inst
->Instruction
.Opcode
);
981 LLVMTypeKind k
= LLVMGetTypeKind(LLVMTypeOf(dst
[0]));
982 is_vec_store
= (k
== LLVMVectorTypeKind
);
986 LLVMValueRef values
[4] = {};
987 TGSI_FOR_EACH_DST0_ENABLED_CHANNEL(inst
, chan
) {
988 LLVMValueRef index
= lp_build_const_int32(gallivm
, chan
);
989 values
[chan
] = LLVMBuildExtractElement(gallivm
->builder
,
992 bld_base
->emit_store(bld_base
, inst
, info
, values
);
996 TGSI_FOR_EACH_DST0_ENABLED_CHANNEL( inst
, chan_index
) {
997 LLVMValueRef value
= dst
[chan_index
];
999 if (tgsi_type_is_64bit(dtype
) && (chan_index
== 1 || chan_index
== 3))
1001 if (inst
->Instruction
.Saturate
)
1002 value
= si_llvm_saturate(bld_base
, value
);
1004 if (reg
->Register
.File
== TGSI_FILE_ADDRESS
) {
1005 temp_ptr
= ctx
->addrs
[reg
->Register
.Index
][chan_index
];
1006 LLVMBuildStore(builder
, value
, temp_ptr
);
1010 if (!tgsi_type_is_64bit(dtype
))
1011 value
= bitcast(bld_base
, TGSI_TYPE_FLOAT
, value
);
1013 if (reg
->Register
.Indirect
) {
1014 unsigned file
= reg
->Register
.File
;
1015 unsigned reg_index
= reg
->Register
.Index
;
1016 store_value_to_array(bld_base
, value
, file
, chan_index
,
1017 reg_index
, ®
->Indirect
);
1019 switch(reg
->Register
.File
) {
1020 case TGSI_FILE_OUTPUT
:
1021 temp_ptr
= ctx
->outputs
[reg
->Register
.Index
][chan_index
];
1022 if (tgsi_type_is_64bit(dtype
))
1023 temp_ptr2
= ctx
->outputs
[reg
->Register
.Index
][chan_index
+ 1];
1026 case TGSI_FILE_TEMPORARY
:
1028 if (reg
->Register
.Index
>= ctx
->temps_count
)
1031 temp_ptr
= ctx
->temps
[ TGSI_NUM_CHANNELS
* reg
->Register
.Index
+ chan_index
];
1032 if (tgsi_type_is_64bit(dtype
))
1033 temp_ptr2
= ctx
->temps
[ TGSI_NUM_CHANNELS
* reg
->Register
.Index
+ chan_index
+ 1];
1040 if (!tgsi_type_is_64bit(dtype
))
1041 LLVMBuildStore(builder
, value
, temp_ptr
);
1043 LLVMValueRef ptr
= LLVMBuildBitCast(builder
, value
,
1044 LLVMVectorType(LLVMIntTypeInContext(bld_base
->base
.gallivm
->context
, 32), 2), "");
1046 value
= LLVMBuildExtractElement(builder
, ptr
,
1047 bld_base
->uint_bld
.zero
, "");
1048 val2
= LLVMBuildExtractElement(builder
, ptr
,
1049 bld_base
->uint_bld
.one
, "");
1051 LLVMBuildStore(builder
, bitcast(bld_base
, TGSI_TYPE_FLOAT
, value
), temp_ptr
);
1052 LLVMBuildStore(builder
, bitcast(bld_base
, TGSI_TYPE_FLOAT
, val2
), temp_ptr2
);
1058 static void set_basicblock_name(LLVMBasicBlockRef bb
, const char *base
, int pc
)
1061 /* Subtract 1 so that the number shown is that of the corresponding
1062 * opcode in the TGSI dump, e.g. an if block has the same suffix as
1063 * the instruction number of the corresponding TGSI IF.
1065 snprintf(buf
, sizeof(buf
), "%s%d", base
, pc
- 1);
1066 LLVMSetValueName(LLVMBasicBlockAsValue(bb
), buf
);
1069 /* Append a basic block at the level of the parent flow.
1071 static LLVMBasicBlockRef
append_basic_block(struct si_shader_context
*ctx
,
1074 struct gallivm_state
*gallivm
= &ctx
->gallivm
;
1076 assert(ctx
->flow_depth
>= 1);
1078 if (ctx
->flow_depth
>= 2) {
1079 struct si_llvm_flow
*flow
= &ctx
->flow
[ctx
->flow_depth
- 2];
1081 return LLVMInsertBasicBlockInContext(gallivm
->context
,
1082 flow
->next_block
, name
);
1085 return LLVMAppendBasicBlockInContext(gallivm
->context
, ctx
->main_fn
, name
);
1088 /* Emit a branch to the given default target for the current block if
1089 * applicable -- that is, if the current block does not already contain a
1090 * branch from a break or continue.
1092 static void emit_default_branch(LLVMBuilderRef builder
, LLVMBasicBlockRef target
)
1094 if (!LLVMGetBasicBlockTerminator(LLVMGetInsertBlock(builder
)))
1095 LLVMBuildBr(builder
, target
);
1098 static void bgnloop_emit(const struct lp_build_tgsi_action
*action
,
1099 struct lp_build_tgsi_context
*bld_base
,
1100 struct lp_build_emit_data
*emit_data
)
1102 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1103 struct gallivm_state
*gallivm
= bld_base
->base
.gallivm
;
1104 struct si_llvm_flow
*flow
= push_flow(ctx
);
1105 flow
->loop_entry_block
= append_basic_block(ctx
, "LOOP");
1106 flow
->next_block
= append_basic_block(ctx
, "ENDLOOP");
1107 set_basicblock_name(flow
->loop_entry_block
, "loop", bld_base
->pc
);
1108 LLVMBuildBr(gallivm
->builder
, flow
->loop_entry_block
);
1109 LLVMPositionBuilderAtEnd(gallivm
->builder
, flow
->loop_entry_block
);
1112 static void brk_emit(const struct lp_build_tgsi_action
*action
,
1113 struct lp_build_tgsi_context
*bld_base
,
1114 struct lp_build_emit_data
*emit_data
)
1116 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1117 struct gallivm_state
*gallivm
= bld_base
->base
.gallivm
;
1118 struct si_llvm_flow
*flow
= get_innermost_loop(ctx
);
1120 LLVMBuildBr(gallivm
->builder
, flow
->next_block
);
1123 static void cont_emit(const struct lp_build_tgsi_action
*action
,
1124 struct lp_build_tgsi_context
*bld_base
,
1125 struct lp_build_emit_data
*emit_data
)
1127 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1128 struct gallivm_state
*gallivm
= bld_base
->base
.gallivm
;
1129 struct si_llvm_flow
*flow
= get_innermost_loop(ctx
);
1131 LLVMBuildBr(gallivm
->builder
, flow
->loop_entry_block
);
1134 static void else_emit(const struct lp_build_tgsi_action
*action
,
1135 struct lp_build_tgsi_context
*bld_base
,
1136 struct lp_build_emit_data
*emit_data
)
1138 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1139 struct gallivm_state
*gallivm
= bld_base
->base
.gallivm
;
1140 struct si_llvm_flow
*current_branch
= get_current_flow(ctx
);
1141 LLVMBasicBlockRef endif_block
;
1143 assert(!current_branch
->loop_entry_block
);
1145 endif_block
= append_basic_block(ctx
, "ENDIF");
1146 emit_default_branch(gallivm
->builder
, endif_block
);
1148 LLVMPositionBuilderAtEnd(gallivm
->builder
, current_branch
->next_block
);
1149 set_basicblock_name(current_branch
->next_block
, "else", bld_base
->pc
);
1151 current_branch
->next_block
= endif_block
;
1154 static void endif_emit(const struct lp_build_tgsi_action
*action
,
1155 struct lp_build_tgsi_context
*bld_base
,
1156 struct lp_build_emit_data
*emit_data
)
1158 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1159 struct gallivm_state
*gallivm
= bld_base
->base
.gallivm
;
1160 struct si_llvm_flow
*current_branch
= get_current_flow(ctx
);
1162 assert(!current_branch
->loop_entry_block
);
1164 emit_default_branch(gallivm
->builder
, current_branch
->next_block
);
1165 LLVMPositionBuilderAtEnd(gallivm
->builder
, current_branch
->next_block
);
1166 set_basicblock_name(current_branch
->next_block
, "endif", bld_base
->pc
);
1171 static void endloop_emit(const struct lp_build_tgsi_action
*action
,
1172 struct lp_build_tgsi_context
*bld_base
,
1173 struct lp_build_emit_data
*emit_data
)
1175 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1176 struct gallivm_state
*gallivm
= bld_base
->base
.gallivm
;
1177 struct si_llvm_flow
*current_loop
= get_current_flow(ctx
);
1179 assert(current_loop
->loop_entry_block
);
1181 emit_default_branch(gallivm
->builder
, current_loop
->loop_entry_block
);
1183 LLVMPositionBuilderAtEnd(gallivm
->builder
, current_loop
->next_block
);
1184 set_basicblock_name(current_loop
->next_block
, "endloop", bld_base
->pc
);
1188 static void if_cond_emit(const struct lp_build_tgsi_action
*action
,
1189 struct lp_build_tgsi_context
*bld_base
,
1190 struct lp_build_emit_data
*emit_data
,
1193 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1194 struct gallivm_state
*gallivm
= bld_base
->base
.gallivm
;
1195 struct si_llvm_flow
*flow
= push_flow(ctx
);
1196 LLVMBasicBlockRef if_block
;
1198 if_block
= append_basic_block(ctx
, "IF");
1199 flow
->next_block
= append_basic_block(ctx
, "ELSE");
1200 set_basicblock_name(if_block
, "if", bld_base
->pc
);
1201 LLVMBuildCondBr(gallivm
->builder
, cond
, if_block
, flow
->next_block
);
1202 LLVMPositionBuilderAtEnd(gallivm
->builder
, if_block
);
1205 static void if_emit(const struct lp_build_tgsi_action
*action
,
1206 struct lp_build_tgsi_context
*bld_base
,
1207 struct lp_build_emit_data
*emit_data
)
1209 struct gallivm_state
*gallivm
= bld_base
->base
.gallivm
;
1212 cond
= LLVMBuildFCmp(gallivm
->builder
, LLVMRealUNE
,
1214 bld_base
->base
.zero
, "");
1216 if_cond_emit(action
, bld_base
, emit_data
, cond
);
1219 static void uif_emit(const struct lp_build_tgsi_action
*action
,
1220 struct lp_build_tgsi_context
*bld_base
,
1221 struct lp_build_emit_data
*emit_data
)
1223 struct gallivm_state
*gallivm
= bld_base
->base
.gallivm
;
1226 cond
= LLVMBuildICmp(gallivm
->builder
, LLVMIntNE
,
1227 bitcast(bld_base
, TGSI_TYPE_UNSIGNED
, emit_data
->args
[0]),
1228 bld_base
->int_bld
.zero
, "");
1230 if_cond_emit(action
, bld_base
, emit_data
, cond
);
1233 static void emit_immediate(struct lp_build_tgsi_context
*bld_base
,
1234 const struct tgsi_full_immediate
*imm
)
1237 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1239 for (i
= 0; i
< 4; ++i
) {
1240 ctx
->imms
[ctx
->imms_num
* TGSI_NUM_CHANNELS
+ i
] =
1241 LLVMConstInt(bld_base
->uint_bld
.elem_type
, imm
->u
[i
].Uint
, false );
1247 void si_llvm_context_init(struct si_shader_context
*ctx
,
1248 struct si_screen
*sscreen
,
1249 struct si_shader
*shader
,
1250 LLVMTargetMachineRef tm
,
1251 const struct tgsi_shader_info
*info
,
1252 const struct tgsi_token
*tokens
)
1254 struct lp_type type
;
1256 /* Initialize the gallivm object:
1257 * We are only using the module, context, and builder fields of this struct.
1258 * This should be enough for us to be able to pass our gallivm struct to the
1259 * helper functions in the gallivm module.
1261 memset(ctx
, 0, sizeof(*ctx
));
1262 ctx
->shader
= shader
;
1263 ctx
->screen
= sscreen
;
1265 ctx
->type
= info
? info
->processor
: -1;
1267 ctx
->gallivm
.context
= LLVMContextCreate();
1268 ctx
->gallivm
.module
= LLVMModuleCreateWithNameInContext("tgsi",
1269 ctx
->gallivm
.context
);
1270 LLVMSetTarget(ctx
->gallivm
.module
, "amdgcn--");
1272 bool unsafe_fpmath
= (sscreen
->b
.debug_flags
& DBG_UNSAFE_MATH
) != 0;
1273 ctx
->gallivm
.builder
= lp_create_builder(ctx
->gallivm
.context
,
1276 ac_llvm_context_init(&ctx
->ac
, ctx
->gallivm
.context
);
1277 ctx
->ac
.module
= ctx
->gallivm
.module
;
1278 ctx
->ac
.builder
= ctx
->gallivm
.builder
;
1280 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
1282 bld_base
->info
= info
;
1284 if (info
&& info
->array_max
[TGSI_FILE_TEMPORARY
] > 0) {
1285 int size
= info
->array_max
[TGSI_FILE_TEMPORARY
];
1287 ctx
->temp_arrays
= CALLOC(size
, sizeof(ctx
->temp_arrays
[0]));
1288 ctx
->temp_array_allocas
= CALLOC(size
, sizeof(ctx
->temp_array_allocas
[0]));
1291 tgsi_scan_arrays(tokens
, TGSI_FILE_TEMPORARY
, size
,
1295 if (info
&& info
->file_max
[TGSI_FILE_IMMEDIATE
] >= 0) {
1296 int size
= info
->file_max
[TGSI_FILE_IMMEDIATE
] + 1;
1297 ctx
->imms
= MALLOC(size
* TGSI_NUM_CHANNELS
* sizeof(LLVMValueRef
));
1300 type
.floating
= true;
1307 lp_build_context_init(&bld_base
->base
, &ctx
->gallivm
, type
);
1308 lp_build_context_init(&ctx
->bld_base
.uint_bld
, &ctx
->gallivm
, lp_uint_type(type
));
1309 lp_build_context_init(&ctx
->bld_base
.int_bld
, &ctx
->gallivm
, lp_int_type(type
));
1311 lp_build_context_init(&ctx
->bld_base
.dbl_bld
, &ctx
->gallivm
, type
);
1312 lp_build_context_init(&ctx
->bld_base
.uint64_bld
, &ctx
->gallivm
, lp_uint_type(type
));
1313 lp_build_context_init(&ctx
->bld_base
.int64_bld
, &ctx
->gallivm
, lp_int_type(type
));
1316 bld_base
->emit_store
= si_llvm_emit_store
;
1317 bld_base
->emit_swizzle
= emit_swizzle
;
1318 bld_base
->emit_declaration
= emit_declaration
;
1319 bld_base
->emit_immediate
= emit_immediate
;
1321 bld_base
->emit_fetch_funcs
[TGSI_FILE_IMMEDIATE
] = si_llvm_emit_fetch
;
1322 bld_base
->emit_fetch_funcs
[TGSI_FILE_INPUT
] = si_llvm_emit_fetch
;
1323 bld_base
->emit_fetch_funcs
[TGSI_FILE_TEMPORARY
] = si_llvm_emit_fetch
;
1324 bld_base
->emit_fetch_funcs
[TGSI_FILE_OUTPUT
] = si_llvm_emit_fetch
;
1325 bld_base
->emit_fetch_funcs
[TGSI_FILE_SYSTEM_VALUE
] = fetch_system_value
;
1327 /* metadata allowing 2.5 ULP */
1328 ctx
->fpmath_md_kind
= LLVMGetMDKindIDInContext(ctx
->gallivm
.context
,
1330 LLVMValueRef arg
= lp_build_const_float(&ctx
->gallivm
, 2.5);
1331 ctx
->fpmath_md_2p5_ulp
= LLVMMDNodeInContext(ctx
->gallivm
.context
,
1334 bld_base
->op_actions
[TGSI_OPCODE_BGNLOOP
].emit
= bgnloop_emit
;
1335 bld_base
->op_actions
[TGSI_OPCODE_BRK
].emit
= brk_emit
;
1336 bld_base
->op_actions
[TGSI_OPCODE_CONT
].emit
= cont_emit
;
1337 bld_base
->op_actions
[TGSI_OPCODE_IF
].emit
= if_emit
;
1338 bld_base
->op_actions
[TGSI_OPCODE_UIF
].emit
= uif_emit
;
1339 bld_base
->op_actions
[TGSI_OPCODE_ELSE
].emit
= else_emit
;
1340 bld_base
->op_actions
[TGSI_OPCODE_ENDIF
].emit
= endif_emit
;
1341 bld_base
->op_actions
[TGSI_OPCODE_ENDLOOP
].emit
= endloop_emit
;
1343 si_shader_context_init_alu(&ctx
->bld_base
);
1345 ctx
->voidt
= LLVMVoidTypeInContext(ctx
->gallivm
.context
);
1346 ctx
->i1
= LLVMInt1TypeInContext(ctx
->gallivm
.context
);
1347 ctx
->i8
= LLVMInt8TypeInContext(ctx
->gallivm
.context
);
1348 ctx
->i32
= LLVMInt32TypeInContext(ctx
->gallivm
.context
);
1349 ctx
->i64
= LLVMInt64TypeInContext(ctx
->gallivm
.context
);
1350 ctx
->i128
= LLVMIntTypeInContext(ctx
->gallivm
.context
, 128);
1351 ctx
->f32
= LLVMFloatTypeInContext(ctx
->gallivm
.context
);
1352 ctx
->v16i8
= LLVMVectorType(ctx
->i8
, 16);
1353 ctx
->v2i32
= LLVMVectorType(ctx
->i32
, 2);
1354 ctx
->v4i32
= LLVMVectorType(ctx
->i32
, 4);
1355 ctx
->v4f32
= LLVMVectorType(ctx
->f32
, 4);
1356 ctx
->v8i32
= LLVMVectorType(ctx
->i32
, 8);
1359 void si_llvm_create_func(struct si_shader_context
*ctx
,
1361 LLVMTypeRef
*return_types
, unsigned num_return_elems
,
1362 LLVMTypeRef
*ParamTypes
, unsigned ParamCount
)
1364 LLVMTypeRef main_fn_type
, ret_type
;
1365 LLVMBasicBlockRef main_fn_body
;
1367 if (num_return_elems
)
1368 ret_type
= LLVMStructTypeInContext(ctx
->gallivm
.context
,
1370 num_return_elems
, true);
1372 ret_type
= LLVMVoidTypeInContext(ctx
->gallivm
.context
);
1374 /* Setup the function */
1375 ctx
->return_type
= ret_type
;
1376 main_fn_type
= LLVMFunctionType(ret_type
, ParamTypes
, ParamCount
, 0);
1377 ctx
->main_fn
= LLVMAddFunction(ctx
->gallivm
.module
, name
, main_fn_type
);
1378 main_fn_body
= LLVMAppendBasicBlockInContext(ctx
->gallivm
.context
,
1379 ctx
->main_fn
, "main_body");
1380 LLVMPositionBuilderAtEnd(ctx
->gallivm
.builder
, main_fn_body
);
1383 void si_llvm_finalize_module(struct si_shader_context
*ctx
,
1386 struct gallivm_state
*gallivm
= ctx
->bld_base
.base
.gallivm
;
1387 const char *triple
= LLVMGetTarget(gallivm
->module
);
1388 LLVMTargetLibraryInfoRef target_library_info
;
1390 /* Create the pass manager */
1391 gallivm
->passmgr
= LLVMCreatePassManager();
1393 target_library_info
= gallivm_create_target_library_info(triple
);
1394 LLVMAddTargetLibraryInfo(target_library_info
, gallivm
->passmgr
);
1397 LLVMAddVerifierPass(gallivm
->passmgr
);
1399 LLVMAddAlwaysInlinerPass(gallivm
->passmgr
);
1401 /* This pass should eliminate all the load and store instructions */
1402 LLVMAddPromoteMemoryToRegisterPass(gallivm
->passmgr
);
1404 /* Add some optimization passes */
1405 LLVMAddScalarReplAggregatesPass(gallivm
->passmgr
);
1406 LLVMAddLICMPass(gallivm
->passmgr
);
1407 LLVMAddAggressiveDCEPass(gallivm
->passmgr
);
1408 LLVMAddCFGSimplificationPass(gallivm
->passmgr
);
1409 LLVMAddInstructionCombiningPass(gallivm
->passmgr
);
1412 LLVMRunPassManager(gallivm
->passmgr
, ctx
->gallivm
.module
);
1414 LLVMDisposeBuilder(gallivm
->builder
);
1415 LLVMDisposePassManager(gallivm
->passmgr
);
1416 gallivm_dispose_target_library_info(target_library_info
);
1419 void si_llvm_dispose(struct si_shader_context
*ctx
)
1421 LLVMDisposeModule(ctx
->bld_base
.base
.gallivm
->module
);
1422 LLVMContextDispose(ctx
->bld_base
.base
.gallivm
->context
);
1423 FREE(ctx
->temp_arrays
);
1424 ctx
->temp_arrays
= NULL
;
1425 FREE(ctx
->temp_array_allocas
);
1426 ctx
->temp_array_allocas
= NULL
;
1429 ctx
->temps_count
= 0;
1435 ctx
->flow_depth_max
= 0;