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[mesa.git] / src / amd / common / ac_nir_to_llvm.c
1 /*
2 * Copyright © 2016 Bas Nieuwenhuizen
3 *
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
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
13 * Software.
14 *
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 NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #include "ac_nir_to_llvm.h"
25 #include "ac_llvm_build.h"
26 #include "ac_llvm_util.h"
27 #include "ac_binary.h"
28 #include "sid.h"
29 #include "nir/nir.h"
30 #include "../vulkan/radv_descriptor_set.h"
31 #include "util/bitscan.h"
32 #include <llvm-c/Transforms/Scalar.h>
33
34 enum radeon_llvm_calling_convention {
35 RADEON_LLVM_AMDGPU_VS = 87,
36 RADEON_LLVM_AMDGPU_GS = 88,
37 RADEON_LLVM_AMDGPU_PS = 89,
38 RADEON_LLVM_AMDGPU_CS = 90,
39 };
40
41 #define CONST_ADDR_SPACE 2
42 #define LOCAL_ADDR_SPACE 3
43
44 #define RADEON_LLVM_MAX_INPUTS (VARYING_SLOT_VAR31 + 1)
45 #define RADEON_LLVM_MAX_OUTPUTS (VARYING_SLOT_VAR31 + 1)
46
47 enum desc_type {
48 DESC_IMAGE,
49 DESC_FMASK,
50 DESC_SAMPLER,
51 DESC_BUFFER,
52 };
53
54 struct nir_to_llvm_context {
55 struct ac_llvm_context ac;
56 const struct ac_nir_compiler_options *options;
57 struct ac_shader_variant_info *shader_info;
58
59 LLVMContextRef context;
60 LLVMModuleRef module;
61 LLVMBuilderRef builder;
62 LLVMValueRef main_function;
63
64 struct hash_table *defs;
65 struct hash_table *phis;
66
67 LLVMValueRef descriptor_sets[AC_UD_MAX_SETS];
68 LLVMValueRef ring_offsets;
69 LLVMValueRef push_constants;
70 LLVMValueRef num_work_groups;
71 LLVMValueRef workgroup_ids;
72 LLVMValueRef local_invocation_ids;
73 LLVMValueRef tg_size;
74
75 LLVMValueRef vertex_buffers;
76 LLVMValueRef base_vertex;
77 LLVMValueRef start_instance;
78 LLVMValueRef draw_index;
79 LLVMValueRef vertex_id;
80 LLVMValueRef rel_auto_id;
81 LLVMValueRef vs_prim_id;
82 LLVMValueRef instance_id;
83
84 LLVMValueRef es2gs_offset;
85
86 LLVMValueRef gsvs_ring_stride;
87 LLVMValueRef gsvs_num_entries;
88 LLVMValueRef gs2vs_offset;
89 LLVMValueRef gs_wave_id;
90 LLVMValueRef gs_vtx_offset[6];
91 LLVMValueRef gs_prim_id, gs_invocation_id;
92
93 LLVMValueRef esgs_ring;
94 LLVMValueRef gsvs_ring;
95
96 LLVMValueRef prim_mask;
97 LLVMValueRef sample_positions;
98 LLVMValueRef persp_sample, persp_center, persp_centroid;
99 LLVMValueRef linear_sample, linear_center, linear_centroid;
100 LLVMValueRef front_face;
101 LLVMValueRef ancillary;
102 LLVMValueRef sample_coverage;
103 LLVMValueRef frag_pos[4];
104
105 LLVMBasicBlockRef continue_block;
106 LLVMBasicBlockRef break_block;
107
108 LLVMTypeRef i1;
109 LLVMTypeRef i8;
110 LLVMTypeRef i16;
111 LLVMTypeRef i32;
112 LLVMTypeRef i64;
113 LLVMTypeRef v2i32;
114 LLVMTypeRef v3i32;
115 LLVMTypeRef v4i32;
116 LLVMTypeRef v8i32;
117 LLVMTypeRef f64;
118 LLVMTypeRef f32;
119 LLVMTypeRef f16;
120 LLVMTypeRef v2f32;
121 LLVMTypeRef v4f32;
122 LLVMTypeRef v16i8;
123 LLVMTypeRef voidt;
124
125 LLVMValueRef i1true;
126 LLVMValueRef i1false;
127 LLVMValueRef i32zero;
128 LLVMValueRef i32one;
129 LLVMValueRef f32zero;
130 LLVMValueRef f32one;
131 LLVMValueRef v4f32empty;
132
133 unsigned uniform_md_kind;
134 LLVMValueRef empty_md;
135 gl_shader_stage stage;
136
137 LLVMValueRef lds;
138 LLVMValueRef inputs[RADEON_LLVM_MAX_INPUTS * 4];
139 LLVMValueRef outputs[RADEON_LLVM_MAX_OUTPUTS * 4];
140
141 LLVMValueRef shared_memory;
142 uint64_t input_mask;
143 uint64_t output_mask;
144 int num_locals;
145 LLVMValueRef *locals;
146 bool has_ddxy;
147 uint8_t num_input_clips;
148 uint8_t num_input_culls;
149 uint8_t num_output_clips;
150 uint8_t num_output_culls;
151
152 bool has_ds_bpermute;
153
154 bool is_gs_copy_shader;
155 LLVMValueRef gs_next_vertex;
156 unsigned gs_max_out_vertices;
157 };
158
159 static LLVMValueRef get_sampler_desc(struct nir_to_llvm_context *ctx,
160 nir_deref_var *deref,
161 enum desc_type desc_type);
162 static unsigned radeon_llvm_reg_index_soa(unsigned index, unsigned chan)
163 {
164 return (index * 4) + chan;
165 }
166
167 static unsigned shader_io_get_unique_index(gl_varying_slot slot)
168 {
169 if (slot == VARYING_SLOT_POS)
170 return 0;
171 if (slot == VARYING_SLOT_PSIZ)
172 return 1;
173 if (slot == VARYING_SLOT_CLIP_DIST0 ||
174 slot == VARYING_SLOT_CULL_DIST0)
175 return 2;
176 if (slot == VARYING_SLOT_CLIP_DIST1 ||
177 slot == VARYING_SLOT_CULL_DIST1)
178 return 3;
179 if (slot >= VARYING_SLOT_VAR0 && slot <= VARYING_SLOT_VAR31)
180 return 4 + (slot - VARYING_SLOT_VAR0);
181 unreachable("illegal slot in get unique index\n");
182 }
183
184 static unsigned llvm_get_type_size(LLVMTypeRef type)
185 {
186 LLVMTypeKind kind = LLVMGetTypeKind(type);
187
188 switch (kind) {
189 case LLVMIntegerTypeKind:
190 return LLVMGetIntTypeWidth(type) / 8;
191 case LLVMFloatTypeKind:
192 return 4;
193 case LLVMPointerTypeKind:
194 return 8;
195 case LLVMVectorTypeKind:
196 return LLVMGetVectorSize(type) *
197 llvm_get_type_size(LLVMGetElementType(type));
198 default:
199 assert(0);
200 return 0;
201 }
202 }
203
204 static void set_llvm_calling_convention(LLVMValueRef func,
205 gl_shader_stage stage)
206 {
207 enum radeon_llvm_calling_convention calling_conv;
208
209 switch (stage) {
210 case MESA_SHADER_VERTEX:
211 case MESA_SHADER_TESS_CTRL:
212 case MESA_SHADER_TESS_EVAL:
213 calling_conv = RADEON_LLVM_AMDGPU_VS;
214 break;
215 case MESA_SHADER_GEOMETRY:
216 calling_conv = RADEON_LLVM_AMDGPU_GS;
217 break;
218 case MESA_SHADER_FRAGMENT:
219 calling_conv = RADEON_LLVM_AMDGPU_PS;
220 break;
221 case MESA_SHADER_COMPUTE:
222 calling_conv = RADEON_LLVM_AMDGPU_CS;
223 break;
224 default:
225 unreachable("Unhandle shader type");
226 }
227
228 LLVMSetFunctionCallConv(func, calling_conv);
229 }
230
231 static LLVMValueRef
232 create_llvm_function(LLVMContextRef ctx, LLVMModuleRef module,
233 LLVMBuilderRef builder, LLVMTypeRef *return_types,
234 unsigned num_return_elems, LLVMTypeRef *param_types,
235 unsigned param_count, unsigned array_params_mask,
236 unsigned sgpr_params, bool unsafe_math)
237 {
238 LLVMTypeRef main_function_type, ret_type;
239 LLVMBasicBlockRef main_function_body;
240
241 if (num_return_elems)
242 ret_type = LLVMStructTypeInContext(ctx, return_types,
243 num_return_elems, true);
244 else
245 ret_type = LLVMVoidTypeInContext(ctx);
246
247 /* Setup the function */
248 main_function_type =
249 LLVMFunctionType(ret_type, param_types, param_count, 0);
250 LLVMValueRef main_function =
251 LLVMAddFunction(module, "main", main_function_type);
252 main_function_body =
253 LLVMAppendBasicBlockInContext(ctx, main_function, "main_body");
254 LLVMPositionBuilderAtEnd(builder, main_function_body);
255
256 LLVMSetFunctionCallConv(main_function, RADEON_LLVM_AMDGPU_CS);
257 for (unsigned i = 0; i < sgpr_params; ++i) {
258 if (array_params_mask & (1 << i)) {
259 LLVMValueRef P = LLVMGetParam(main_function, i);
260 ac_add_function_attr(ctx, main_function, i + 1, AC_FUNC_ATTR_BYVAL);
261 ac_add_attr_dereferenceable(P, UINT64_MAX);
262 }
263 else {
264 ac_add_function_attr(ctx, main_function, i + 1, AC_FUNC_ATTR_INREG);
265 }
266 }
267
268 if (unsafe_math) {
269 /* These were copied from some LLVM test. */
270 LLVMAddTargetDependentFunctionAttr(main_function,
271 "less-precise-fpmad",
272 "true");
273 LLVMAddTargetDependentFunctionAttr(main_function,
274 "no-infs-fp-math",
275 "true");
276 LLVMAddTargetDependentFunctionAttr(main_function,
277 "no-nans-fp-math",
278 "true");
279 LLVMAddTargetDependentFunctionAttr(main_function,
280 "unsafe-fp-math",
281 "true");
282 }
283 return main_function;
284 }
285
286 static LLVMTypeRef const_array(LLVMTypeRef elem_type, int num_elements)
287 {
288 return LLVMPointerType(LLVMArrayType(elem_type, num_elements),
289 CONST_ADDR_SPACE);
290 }
291
292 static LLVMValueRef get_shared_memory_ptr(struct nir_to_llvm_context *ctx,
293 int idx,
294 LLVMTypeRef type)
295 {
296 LLVMValueRef offset;
297 LLVMValueRef ptr;
298 int addr_space;
299
300 offset = LLVMConstInt(ctx->i32, idx * 16, false);
301
302 ptr = ctx->shared_memory;
303 ptr = LLVMBuildGEP(ctx->builder, ptr, &offset, 1, "");
304 addr_space = LLVMGetPointerAddressSpace(LLVMTypeOf(ptr));
305 ptr = LLVMBuildBitCast(ctx->builder, ptr, LLVMPointerType(type, addr_space), "");
306 return ptr;
307 }
308
309 static LLVMTypeRef to_integer_type_scalar(struct nir_to_llvm_context *ctx, LLVMTypeRef t)
310 {
311 if (t == ctx->f16 || t == ctx->i16)
312 return ctx->i16;
313 else if (t == ctx->f32 || t == ctx->i32)
314 return ctx->i32;
315 else if (t == ctx->f64 || t == ctx->i64)
316 return ctx->i64;
317 else
318 unreachable("Unhandled integer size");
319 }
320
321 static LLVMTypeRef to_integer_type(struct nir_to_llvm_context *ctx, LLVMTypeRef t)
322 {
323 if (LLVMGetTypeKind(t) == LLVMVectorTypeKind) {
324 LLVMTypeRef elem_type = LLVMGetElementType(t);
325 return LLVMVectorType(to_integer_type_scalar(ctx, elem_type),
326 LLVMGetVectorSize(t));
327 }
328 return to_integer_type_scalar(ctx, t);
329 }
330
331 static LLVMValueRef to_integer(struct nir_to_llvm_context *ctx, LLVMValueRef v)
332 {
333 LLVMTypeRef type = LLVMTypeOf(v);
334 return LLVMBuildBitCast(ctx->builder, v, to_integer_type(ctx, type), "");
335 }
336
337 static LLVMTypeRef to_float_type_scalar(struct nir_to_llvm_context *ctx, LLVMTypeRef t)
338 {
339 if (t == ctx->i16 || t == ctx->f16)
340 return ctx->f16;
341 else if (t == ctx->i32 || t == ctx->f32)
342 return ctx->f32;
343 else if (t == ctx->i64 || t == ctx->f64)
344 return ctx->f64;
345 else
346 unreachable("Unhandled float size");
347 }
348
349 static LLVMTypeRef to_float_type(struct nir_to_llvm_context *ctx, LLVMTypeRef t)
350 {
351 if (LLVMGetTypeKind(t) == LLVMVectorTypeKind) {
352 LLVMTypeRef elem_type = LLVMGetElementType(t);
353 return LLVMVectorType(to_float_type_scalar(ctx, elem_type),
354 LLVMGetVectorSize(t));
355 }
356 return to_float_type_scalar(ctx, t);
357 }
358
359 static LLVMValueRef to_float(struct nir_to_llvm_context *ctx, LLVMValueRef v)
360 {
361 LLVMTypeRef type = LLVMTypeOf(v);
362 return LLVMBuildBitCast(ctx->builder, v, to_float_type(ctx, type), "");
363 }
364
365 static int get_elem_bits(struct nir_to_llvm_context *ctx, LLVMTypeRef type)
366 {
367 if (LLVMGetTypeKind(type) == LLVMVectorTypeKind)
368 type = LLVMGetElementType(type);
369
370 if (LLVMGetTypeKind(type) == LLVMIntegerTypeKind)
371 return LLVMGetIntTypeWidth(type);
372
373 if (type == ctx->f16)
374 return 16;
375 if (type == ctx->f32)
376 return 32;
377 if (type == ctx->f64)
378 return 64;
379
380 unreachable("Unhandled type kind in get_elem_bits");
381 }
382
383 static LLVMValueRef unpack_param(struct nir_to_llvm_context *ctx,
384 LLVMValueRef param, unsigned rshift,
385 unsigned bitwidth)
386 {
387 LLVMValueRef value = param;
388 if (rshift)
389 value = LLVMBuildLShr(ctx->builder, value,
390 LLVMConstInt(ctx->i32, rshift, false), "");
391
392 if (rshift + bitwidth < 32) {
393 unsigned mask = (1 << bitwidth) - 1;
394 value = LLVMBuildAnd(ctx->builder, value,
395 LLVMConstInt(ctx->i32, mask, false), "");
396 }
397 return value;
398 }
399
400 static void set_userdata_location(struct ac_userdata_info *ud_info, uint8_t sgpr_idx, uint8_t num_sgprs)
401 {
402 ud_info->sgpr_idx = sgpr_idx;
403 ud_info->num_sgprs = num_sgprs;
404 ud_info->indirect = false;
405 ud_info->indirect_offset = 0;
406 }
407
408 static void set_userdata_location_shader(struct nir_to_llvm_context *ctx,
409 int idx, uint8_t sgpr_idx, uint8_t num_sgprs)
410 {
411 set_userdata_location(&ctx->shader_info->user_sgprs_locs.shader_data[idx], sgpr_idx, num_sgprs);
412 }
413
414 #if 0
415 static void set_userdata_location_indirect(struct ac_userdata_info *ud_info, uint8_t sgpr_idx, uint8_t num_sgprs,
416 uint32_t indirect_offset)
417 {
418 ud_info->sgpr_idx = sgpr_idx;
419 ud_info->num_sgprs = num_sgprs;
420 ud_info->indirect = true;
421 ud_info->indirect_offset = indirect_offset;
422 }
423 #endif
424
425 static void create_function(struct nir_to_llvm_context *ctx)
426 {
427 LLVMTypeRef arg_types[23];
428 unsigned arg_idx = 0;
429 unsigned array_params_mask = 0;
430 unsigned sgpr_count = 0, user_sgpr_count;
431 unsigned i;
432 unsigned num_sets = ctx->options->layout ? ctx->options->layout->num_sets : 0;
433 unsigned user_sgpr_idx;
434 bool need_push_constants;
435 bool need_ring_offsets = false;
436
437 /* until we sort out scratch/global buffers always assign ring offsets for gs/vs/es */
438 if (ctx->stage == MESA_SHADER_GEOMETRY ||
439 ctx->stage == MESA_SHADER_VERTEX ||
440 ctx->is_gs_copy_shader)
441 need_ring_offsets = true;
442
443 need_push_constants = true;
444 if (!ctx->options->layout)
445 need_push_constants = false;
446 else if (!ctx->options->layout->push_constant_size &&
447 !ctx->options->layout->dynamic_offset_count)
448 need_push_constants = false;
449
450 if (need_ring_offsets && !ctx->options->supports_spill) {
451 arg_types[arg_idx++] = const_array(ctx->v16i8, 8); /* address of rings */
452 }
453
454 /* 1 for each descriptor set */
455 for (unsigned i = 0; i < num_sets; ++i) {
456 if (ctx->options->layout->set[i].layout->shader_stages & (1 << ctx->stage)) {
457 array_params_mask |= (1 << arg_idx);
458 arg_types[arg_idx++] = const_array(ctx->i8, 1024 * 1024);
459 }
460 }
461
462 if (need_push_constants) {
463 /* 1 for push constants and dynamic descriptors */
464 array_params_mask |= (1 << arg_idx);
465 arg_types[arg_idx++] = const_array(ctx->i8, 1024 * 1024);
466 }
467
468 switch (ctx->stage) {
469 case MESA_SHADER_COMPUTE:
470 arg_types[arg_idx++] = LLVMVectorType(ctx->i32, 3); /* grid size */
471 user_sgpr_count = arg_idx;
472 arg_types[arg_idx++] = LLVMVectorType(ctx->i32, 3);
473 arg_types[arg_idx++] = ctx->i32;
474 sgpr_count = arg_idx;
475
476 arg_types[arg_idx++] = LLVMVectorType(ctx->i32, 3);
477 break;
478 case MESA_SHADER_VERTEX:
479 if (!ctx->is_gs_copy_shader) {
480 arg_types[arg_idx++] = const_array(ctx->v16i8, 16); /* vertex buffers */
481 arg_types[arg_idx++] = ctx->i32; // base vertex
482 arg_types[arg_idx++] = ctx->i32; // start instance
483 arg_types[arg_idx++] = ctx->i32; // draw index
484 }
485 user_sgpr_count = arg_idx;
486 if (ctx->options->key.vs.as_es)
487 arg_types[arg_idx++] = ctx->i32; //es2gs offset
488 sgpr_count = arg_idx;
489 arg_types[arg_idx++] = ctx->i32; // vertex id
490 if (!ctx->is_gs_copy_shader) {
491 arg_types[arg_idx++] = ctx->i32; // rel auto id
492 arg_types[arg_idx++] = ctx->i32; // vs prim id
493 arg_types[arg_idx++] = ctx->i32; // instance id
494 }
495 break;
496 case MESA_SHADER_GEOMETRY:
497 arg_types[arg_idx++] = ctx->i32; // gsvs stride
498 arg_types[arg_idx++] = ctx->i32; // gsvs num entires
499 user_sgpr_count = arg_idx;
500 arg_types[arg_idx++] = ctx->i32; // gs2vs offset
501 arg_types[arg_idx++] = ctx->i32; // wave id
502 sgpr_count = arg_idx;
503 arg_types[arg_idx++] = ctx->i32; // vtx0
504 arg_types[arg_idx++] = ctx->i32; // vtx1
505 arg_types[arg_idx++] = ctx->i32; // prim id
506 arg_types[arg_idx++] = ctx->i32; // vtx2
507 arg_types[arg_idx++] = ctx->i32; // vtx3
508 arg_types[arg_idx++] = ctx->i32; // vtx4
509 arg_types[arg_idx++] = ctx->i32; // vtx5
510 arg_types[arg_idx++] = ctx->i32; // GS instance id
511 break;
512 case MESA_SHADER_FRAGMENT:
513 arg_types[arg_idx++] = const_array(ctx->f32, 32); /* sample positions */
514 user_sgpr_count = arg_idx;
515 arg_types[arg_idx++] = ctx->i32; /* prim mask */
516 sgpr_count = arg_idx;
517 arg_types[arg_idx++] = ctx->v2i32; /* persp sample */
518 arg_types[arg_idx++] = ctx->v2i32; /* persp center */
519 arg_types[arg_idx++] = ctx->v2i32; /* persp centroid */
520 arg_types[arg_idx++] = ctx->v3i32; /* persp pull model */
521 arg_types[arg_idx++] = ctx->v2i32; /* linear sample */
522 arg_types[arg_idx++] = ctx->v2i32; /* linear center */
523 arg_types[arg_idx++] = ctx->v2i32; /* linear centroid */
524 arg_types[arg_idx++] = ctx->f32; /* line stipple tex */
525 arg_types[arg_idx++] = ctx->f32; /* pos x float */
526 arg_types[arg_idx++] = ctx->f32; /* pos y float */
527 arg_types[arg_idx++] = ctx->f32; /* pos z float */
528 arg_types[arg_idx++] = ctx->f32; /* pos w float */
529 arg_types[arg_idx++] = ctx->i32; /* front face */
530 arg_types[arg_idx++] = ctx->i32; /* ancillary */
531 arg_types[arg_idx++] = ctx->i32; /* sample coverage */
532 arg_types[arg_idx++] = ctx->i32; /* fixed pt */
533 break;
534 default:
535 unreachable("Shader stage not implemented");
536 }
537
538 ctx->main_function = create_llvm_function(
539 ctx->context, ctx->module, ctx->builder, NULL, 0, arg_types,
540 arg_idx, array_params_mask, sgpr_count, ctx->options->unsafe_math);
541 set_llvm_calling_convention(ctx->main_function, ctx->stage);
542
543 ctx->shader_info->num_input_sgprs = 0;
544 ctx->shader_info->num_input_vgprs = 0;
545
546 ctx->shader_info->num_user_sgprs = ctx->options->supports_spill ? 2 : 0;
547 for (i = 0; i < user_sgpr_count; i++)
548 ctx->shader_info->num_user_sgprs += llvm_get_type_size(arg_types[i]) / 4;
549
550 ctx->shader_info->num_input_sgprs = ctx->shader_info->num_user_sgprs;
551 for (; i < sgpr_count; i++)
552 ctx->shader_info->num_input_sgprs += llvm_get_type_size(arg_types[i]) / 4;
553
554 if (ctx->stage != MESA_SHADER_FRAGMENT)
555 for (; i < arg_idx; ++i)
556 ctx->shader_info->num_input_vgprs += llvm_get_type_size(arg_types[i]) / 4;
557
558 arg_idx = 0;
559 user_sgpr_idx = 0;
560
561 if (ctx->options->supports_spill || need_ring_offsets) {
562 set_userdata_location_shader(ctx, AC_UD_SCRATCH_RING_OFFSETS, user_sgpr_idx, 2);
563 user_sgpr_idx += 2;
564 if (ctx->options->supports_spill) {
565 ctx->ring_offsets = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.implicit.buffer.ptr",
566 LLVMPointerType(ctx->i8, CONST_ADDR_SPACE),
567 NULL, 0, AC_FUNC_ATTR_READNONE);
568 ctx->ring_offsets = LLVMBuildBitCast(ctx->builder, ctx->ring_offsets,
569 const_array(ctx->v16i8, 8), "");
570 } else
571 ctx->ring_offsets = LLVMGetParam(ctx->main_function, arg_idx++);
572 }
573
574 for (unsigned i = 0; i < num_sets; ++i) {
575 if (ctx->options->layout->set[i].layout->shader_stages & (1 << ctx->stage)) {
576 set_userdata_location(&ctx->shader_info->user_sgprs_locs.descriptor_sets[i], user_sgpr_idx, 2);
577 user_sgpr_idx += 2;
578 ctx->descriptor_sets[i] =
579 LLVMGetParam(ctx->main_function, arg_idx++);
580 } else
581 ctx->descriptor_sets[i] = NULL;
582 }
583
584 if (need_push_constants) {
585 ctx->push_constants = LLVMGetParam(ctx->main_function, arg_idx++);
586 set_userdata_location_shader(ctx, AC_UD_PUSH_CONSTANTS, user_sgpr_idx, 2);
587 user_sgpr_idx += 2;
588 }
589
590 switch (ctx->stage) {
591 case MESA_SHADER_COMPUTE:
592 set_userdata_location_shader(ctx, AC_UD_CS_GRID_SIZE, user_sgpr_idx, 3);
593 user_sgpr_idx += 3;
594 ctx->num_work_groups =
595 LLVMGetParam(ctx->main_function, arg_idx++);
596 ctx->workgroup_ids =
597 LLVMGetParam(ctx->main_function, arg_idx++);
598 ctx->tg_size =
599 LLVMGetParam(ctx->main_function, arg_idx++);
600 ctx->local_invocation_ids =
601 LLVMGetParam(ctx->main_function, arg_idx++);
602 break;
603 case MESA_SHADER_VERTEX:
604 if (!ctx->is_gs_copy_shader) {
605 set_userdata_location_shader(ctx, AC_UD_VS_VERTEX_BUFFERS, user_sgpr_idx, 2);
606 user_sgpr_idx += 2;
607 ctx->vertex_buffers = LLVMGetParam(ctx->main_function, arg_idx++);
608 set_userdata_location_shader(ctx, AC_UD_VS_BASE_VERTEX_START_INSTANCE, user_sgpr_idx, 3);
609 user_sgpr_idx += 3;
610 ctx->base_vertex = LLVMGetParam(ctx->main_function, arg_idx++);
611 ctx->start_instance = LLVMGetParam(ctx->main_function, arg_idx++);
612 ctx->draw_index = LLVMGetParam(ctx->main_function, arg_idx++);
613 }
614 if (ctx->options->key.vs.as_es)
615 ctx->es2gs_offset = LLVMGetParam(ctx->main_function, arg_idx++);
616 ctx->vertex_id = LLVMGetParam(ctx->main_function, arg_idx++);
617 if (!ctx->is_gs_copy_shader) {
618 ctx->rel_auto_id = LLVMGetParam(ctx->main_function, arg_idx++);
619 ctx->vs_prim_id = LLVMGetParam(ctx->main_function, arg_idx++);
620 ctx->instance_id = LLVMGetParam(ctx->main_function, arg_idx++);
621 }
622 break;
623 case MESA_SHADER_GEOMETRY:
624 set_userdata_location_shader(ctx, AC_UD_GS_VS_RING_STRIDE_ENTRIES, user_sgpr_idx, 2);
625 user_sgpr_idx += 2;
626 ctx->gsvs_ring_stride = LLVMGetParam(ctx->main_function, arg_idx++);
627 ctx->gsvs_num_entries = LLVMGetParam(ctx->main_function, arg_idx++);
628 ctx->gs2vs_offset = LLVMGetParam(ctx->main_function, arg_idx++);
629 ctx->gs_wave_id = LLVMGetParam(ctx->main_function, arg_idx++);
630 ctx->gs_vtx_offset[0] = LLVMGetParam(ctx->main_function, arg_idx++);
631 ctx->gs_vtx_offset[1] = LLVMGetParam(ctx->main_function, arg_idx++);
632 ctx->gs_prim_id = LLVMGetParam(ctx->main_function, arg_idx++);
633 ctx->gs_vtx_offset[2] = LLVMGetParam(ctx->main_function, arg_idx++);
634 ctx->gs_vtx_offset[3] = LLVMGetParam(ctx->main_function, arg_idx++);
635 ctx->gs_vtx_offset[4] = LLVMGetParam(ctx->main_function, arg_idx++);
636 ctx->gs_vtx_offset[5] = LLVMGetParam(ctx->main_function, arg_idx++);
637 ctx->gs_invocation_id = LLVMGetParam(ctx->main_function, arg_idx++);
638 break;
639 case MESA_SHADER_FRAGMENT:
640 set_userdata_location_shader(ctx, AC_UD_PS_SAMPLE_POS, user_sgpr_idx, 2);
641 user_sgpr_idx += 2;
642 ctx->sample_positions = LLVMGetParam(ctx->main_function, arg_idx++);
643 ctx->prim_mask = LLVMGetParam(ctx->main_function, arg_idx++);
644 ctx->persp_sample = LLVMGetParam(ctx->main_function, arg_idx++);
645 ctx->persp_center = LLVMGetParam(ctx->main_function, arg_idx++);
646 ctx->persp_centroid = LLVMGetParam(ctx->main_function, arg_idx++);
647 arg_idx++;
648 ctx->linear_sample = LLVMGetParam(ctx->main_function, arg_idx++);
649 ctx->linear_center = LLVMGetParam(ctx->main_function, arg_idx++);
650 ctx->linear_centroid = LLVMGetParam(ctx->main_function, arg_idx++);
651 arg_idx++; /* line stipple */
652 ctx->frag_pos[0] = LLVMGetParam(ctx->main_function, arg_idx++);
653 ctx->frag_pos[1] = LLVMGetParam(ctx->main_function, arg_idx++);
654 ctx->frag_pos[2] = LLVMGetParam(ctx->main_function, arg_idx++);
655 ctx->frag_pos[3] = LLVMGetParam(ctx->main_function, arg_idx++);
656 ctx->front_face = LLVMGetParam(ctx->main_function, arg_idx++);
657 ctx->ancillary = LLVMGetParam(ctx->main_function, arg_idx++);
658 ctx->sample_coverage = LLVMGetParam(ctx->main_function, arg_idx++);
659 break;
660 default:
661 unreachable("Shader stage not implemented");
662 }
663 }
664
665 static void setup_types(struct nir_to_llvm_context *ctx)
666 {
667 LLVMValueRef args[4];
668
669 ctx->voidt = LLVMVoidTypeInContext(ctx->context);
670 ctx->i1 = LLVMIntTypeInContext(ctx->context, 1);
671 ctx->i8 = LLVMIntTypeInContext(ctx->context, 8);
672 ctx->i16 = LLVMIntTypeInContext(ctx->context, 16);
673 ctx->i32 = LLVMIntTypeInContext(ctx->context, 32);
674 ctx->i64 = LLVMIntTypeInContext(ctx->context, 64);
675 ctx->v2i32 = LLVMVectorType(ctx->i32, 2);
676 ctx->v3i32 = LLVMVectorType(ctx->i32, 3);
677 ctx->v4i32 = LLVMVectorType(ctx->i32, 4);
678 ctx->v8i32 = LLVMVectorType(ctx->i32, 8);
679 ctx->f32 = LLVMFloatTypeInContext(ctx->context);
680 ctx->f16 = LLVMHalfTypeInContext(ctx->context);
681 ctx->f64 = LLVMDoubleTypeInContext(ctx->context);
682 ctx->v2f32 = LLVMVectorType(ctx->f32, 2);
683 ctx->v4f32 = LLVMVectorType(ctx->f32, 4);
684 ctx->v16i8 = LLVMVectorType(ctx->i8, 16);
685
686 ctx->i1false = LLVMConstInt(ctx->i1, 0, false);
687 ctx->i1true = LLVMConstInt(ctx->i1, 1, false);
688 ctx->i32zero = LLVMConstInt(ctx->i32, 0, false);
689 ctx->i32one = LLVMConstInt(ctx->i32, 1, false);
690 ctx->f32zero = LLVMConstReal(ctx->f32, 0.0);
691 ctx->f32one = LLVMConstReal(ctx->f32, 1.0);
692
693 args[0] = ctx->f32zero;
694 args[1] = ctx->f32zero;
695 args[2] = ctx->f32zero;
696 args[3] = ctx->f32one;
697 ctx->v4f32empty = LLVMConstVector(args, 4);
698
699 ctx->uniform_md_kind =
700 LLVMGetMDKindIDInContext(ctx->context, "amdgpu.uniform", 14);
701 ctx->empty_md = LLVMMDNodeInContext(ctx->context, NULL, 0);
702
703 args[0] = LLVMConstReal(ctx->f32, 2.5);
704 }
705
706 static int get_llvm_num_components(LLVMValueRef value)
707 {
708 LLVMTypeRef type = LLVMTypeOf(value);
709 unsigned num_components = LLVMGetTypeKind(type) == LLVMVectorTypeKind
710 ? LLVMGetVectorSize(type)
711 : 1;
712 return num_components;
713 }
714
715 static LLVMValueRef llvm_extract_elem(struct nir_to_llvm_context *ctx,
716 LLVMValueRef value,
717 int index)
718 {
719 int count = get_llvm_num_components(value);
720
721 assert(index < count);
722 if (count == 1)
723 return value;
724
725 return LLVMBuildExtractElement(ctx->builder, value,
726 LLVMConstInt(ctx->i32, index, false), "");
727 }
728
729 static LLVMValueRef trim_vector(struct nir_to_llvm_context *ctx,
730 LLVMValueRef value, unsigned count)
731 {
732 unsigned num_components = get_llvm_num_components(value);
733 if (count == num_components)
734 return value;
735
736 LLVMValueRef masks[] = {
737 LLVMConstInt(ctx->i32, 0, false), LLVMConstInt(ctx->i32, 1, false),
738 LLVMConstInt(ctx->i32, 2, false), LLVMConstInt(ctx->i32, 3, false)};
739
740 if (count == 1)
741 return LLVMBuildExtractElement(ctx->builder, value, masks[0],
742 "");
743
744 LLVMValueRef swizzle = LLVMConstVector(masks, count);
745 return LLVMBuildShuffleVector(ctx->builder, value, value, swizzle, "");
746 }
747
748 static void
749 build_store_values_extended(struct nir_to_llvm_context *ctx,
750 LLVMValueRef *values,
751 unsigned value_count,
752 unsigned value_stride,
753 LLVMValueRef vec)
754 {
755 LLVMBuilderRef builder = ctx->builder;
756 unsigned i;
757
758 if (value_count == 1) {
759 LLVMBuildStore(builder, vec, values[0]);
760 return;
761 }
762
763 for (i = 0; i < value_count; i++) {
764 LLVMValueRef ptr = values[i * value_stride];
765 LLVMValueRef index = LLVMConstInt(ctx->i32, i, false);
766 LLVMValueRef value = LLVMBuildExtractElement(builder, vec, index, "");
767 LLVMBuildStore(builder, value, ptr);
768 }
769 }
770
771 static LLVMTypeRef get_def_type(struct nir_to_llvm_context *ctx,
772 nir_ssa_def *def)
773 {
774 LLVMTypeRef type = LLVMIntTypeInContext(ctx->context, def->bit_size);
775 if (def->num_components > 1) {
776 type = LLVMVectorType(type, def->num_components);
777 }
778 return type;
779 }
780
781 static LLVMValueRef get_src(struct nir_to_llvm_context *ctx, nir_src src)
782 {
783 assert(src.is_ssa);
784 struct hash_entry *entry = _mesa_hash_table_search(ctx->defs, src.ssa);
785 return (LLVMValueRef)entry->data;
786 }
787
788
789 static LLVMBasicBlockRef get_block(struct nir_to_llvm_context *ctx,
790 struct nir_block *b)
791 {
792 struct hash_entry *entry = _mesa_hash_table_search(ctx->defs, b);
793 return (LLVMBasicBlockRef)entry->data;
794 }
795
796 static LLVMValueRef get_alu_src(struct nir_to_llvm_context *ctx,
797 nir_alu_src src,
798 unsigned num_components)
799 {
800 LLVMValueRef value = get_src(ctx, src.src);
801 bool need_swizzle = false;
802
803 assert(value);
804 LLVMTypeRef type = LLVMTypeOf(value);
805 unsigned src_components = LLVMGetTypeKind(type) == LLVMVectorTypeKind
806 ? LLVMGetVectorSize(type)
807 : 1;
808
809 for (unsigned i = 0; i < num_components; ++i) {
810 assert(src.swizzle[i] < src_components);
811 if (src.swizzle[i] != i)
812 need_swizzle = true;
813 }
814
815 if (need_swizzle || num_components != src_components) {
816 LLVMValueRef masks[] = {
817 LLVMConstInt(ctx->i32, src.swizzle[0], false),
818 LLVMConstInt(ctx->i32, src.swizzle[1], false),
819 LLVMConstInt(ctx->i32, src.swizzle[2], false),
820 LLVMConstInt(ctx->i32, src.swizzle[3], false)};
821
822 if (src_components > 1 && num_components == 1) {
823 value = LLVMBuildExtractElement(ctx->builder, value,
824 masks[0], "");
825 } else if (src_components == 1 && num_components > 1) {
826 LLVMValueRef values[] = {value, value, value, value};
827 value = ac_build_gather_values(&ctx->ac, values, num_components);
828 } else {
829 LLVMValueRef swizzle = LLVMConstVector(masks, num_components);
830 value = LLVMBuildShuffleVector(ctx->builder, value, value,
831 swizzle, "");
832 }
833 }
834 assert(!src.negate);
835 assert(!src.abs);
836 return value;
837 }
838
839 static LLVMValueRef emit_int_cmp(struct nir_to_llvm_context *ctx,
840 LLVMIntPredicate pred, LLVMValueRef src0,
841 LLVMValueRef src1)
842 {
843 LLVMValueRef result = LLVMBuildICmp(ctx->builder, pred, src0, src1, "");
844 return LLVMBuildSelect(ctx->builder, result,
845 LLVMConstInt(ctx->i32, 0xFFFFFFFF, false),
846 LLVMConstInt(ctx->i32, 0, false), "");
847 }
848
849 static LLVMValueRef emit_float_cmp(struct nir_to_llvm_context *ctx,
850 LLVMRealPredicate pred, LLVMValueRef src0,
851 LLVMValueRef src1)
852 {
853 LLVMValueRef result;
854 src0 = to_float(ctx, src0);
855 src1 = to_float(ctx, src1);
856 result = LLVMBuildFCmp(ctx->builder, pred, src0, src1, "");
857 return LLVMBuildSelect(ctx->builder, result,
858 LLVMConstInt(ctx->i32, 0xFFFFFFFF, false),
859 LLVMConstInt(ctx->i32, 0, false), "");
860 }
861
862 static LLVMValueRef emit_intrin_1f_param(struct nir_to_llvm_context *ctx,
863 const char *intrin,
864 LLVMTypeRef result_type,
865 LLVMValueRef src0)
866 {
867 char name[64];
868 LLVMValueRef params[] = {
869 to_float(ctx, src0),
870 };
871
872 sprintf(name, "%s.f%d", intrin, get_elem_bits(ctx, result_type));
873 return ac_build_intrinsic(&ctx->ac, name, result_type, params, 1, AC_FUNC_ATTR_READNONE);
874 }
875
876 static LLVMValueRef emit_intrin_2f_param(struct nir_to_llvm_context *ctx,
877 const char *intrin,
878 LLVMTypeRef result_type,
879 LLVMValueRef src0, LLVMValueRef src1)
880 {
881 char name[64];
882 LLVMValueRef params[] = {
883 to_float(ctx, src0),
884 to_float(ctx, src1),
885 };
886
887 sprintf(name, "%s.f%d", intrin, get_elem_bits(ctx, result_type));
888 return ac_build_intrinsic(&ctx->ac, name, result_type, params, 2, AC_FUNC_ATTR_READNONE);
889 }
890
891 static LLVMValueRef emit_intrin_3f_param(struct nir_to_llvm_context *ctx,
892 const char *intrin,
893 LLVMTypeRef result_type,
894 LLVMValueRef src0, LLVMValueRef src1, LLVMValueRef src2)
895 {
896 char name[64];
897 LLVMValueRef params[] = {
898 to_float(ctx, src0),
899 to_float(ctx, src1),
900 to_float(ctx, src2),
901 };
902
903 sprintf(name, "%s.f%d", intrin, get_elem_bits(ctx, result_type));
904 return ac_build_intrinsic(&ctx->ac, name, result_type, params, 3, AC_FUNC_ATTR_READNONE);
905 }
906
907 static LLVMValueRef emit_bcsel(struct nir_to_llvm_context *ctx,
908 LLVMValueRef src0, LLVMValueRef src1, LLVMValueRef src2)
909 {
910 LLVMValueRef v = LLVMBuildICmp(ctx->builder, LLVMIntNE, src0,
911 ctx->i32zero, "");
912 return LLVMBuildSelect(ctx->builder, v, src1, src2, "");
913 }
914
915 static LLVMValueRef emit_find_lsb(struct nir_to_llvm_context *ctx,
916 LLVMValueRef src0)
917 {
918 LLVMValueRef params[2] = {
919 src0,
920
921 /* The value of 1 means that ffs(x=0) = undef, so LLVM won't
922 * add special code to check for x=0. The reason is that
923 * the LLVM behavior for x=0 is different from what we
924 * need here.
925 *
926 * The hardware already implements the correct behavior.
927 */
928 LLVMConstInt(ctx->i32, 1, false),
929 };
930 return ac_build_intrinsic(&ctx->ac, "llvm.cttz.i32", ctx->i32, params, 2, AC_FUNC_ATTR_READNONE);
931 }
932
933 static LLVMValueRef emit_ifind_msb(struct nir_to_llvm_context *ctx,
934 LLVMValueRef src0)
935 {
936 return ac_build_imsb(&ctx->ac, src0, ctx->i32);
937 }
938
939 static LLVMValueRef emit_ufind_msb(struct nir_to_llvm_context *ctx,
940 LLVMValueRef src0)
941 {
942 return ac_build_umsb(&ctx->ac, src0, ctx->i32);
943 }
944
945 static LLVMValueRef emit_minmax_int(struct nir_to_llvm_context *ctx,
946 LLVMIntPredicate pred,
947 LLVMValueRef src0, LLVMValueRef src1)
948 {
949 return LLVMBuildSelect(ctx->builder,
950 LLVMBuildICmp(ctx->builder, pred, src0, src1, ""),
951 src0,
952 src1, "");
953
954 }
955 static LLVMValueRef emit_iabs(struct nir_to_llvm_context *ctx,
956 LLVMValueRef src0)
957 {
958 return emit_minmax_int(ctx, LLVMIntSGT, src0,
959 LLVMBuildNeg(ctx->builder, src0, ""));
960 }
961
962 static LLVMValueRef emit_fsign(struct nir_to_llvm_context *ctx,
963 LLVMValueRef src0)
964 {
965 LLVMValueRef cmp, val;
966
967 cmp = LLVMBuildFCmp(ctx->builder, LLVMRealOGT, src0, ctx->f32zero, "");
968 val = LLVMBuildSelect(ctx->builder, cmp, ctx->f32one, src0, "");
969 cmp = LLVMBuildFCmp(ctx->builder, LLVMRealOGE, val, ctx->f32zero, "");
970 val = LLVMBuildSelect(ctx->builder, cmp, val, LLVMConstReal(ctx->f32, -1.0), "");
971 return val;
972 }
973
974 static LLVMValueRef emit_isign(struct nir_to_llvm_context *ctx,
975 LLVMValueRef src0)
976 {
977 LLVMValueRef cmp, val;
978
979 cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGT, src0, ctx->i32zero, "");
980 val = LLVMBuildSelect(ctx->builder, cmp, ctx->i32one, src0, "");
981 cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGE, val, ctx->i32zero, "");
982 val = LLVMBuildSelect(ctx->builder, cmp, val, LLVMConstInt(ctx->i32, -1, true), "");
983 return val;
984 }
985
986 static LLVMValueRef emit_ffract(struct nir_to_llvm_context *ctx,
987 LLVMValueRef src0)
988 {
989 const char *intr = "llvm.floor.f32";
990 LLVMValueRef fsrc0 = to_float(ctx, src0);
991 LLVMValueRef params[] = {
992 fsrc0,
993 };
994 LLVMValueRef floor = ac_build_intrinsic(&ctx->ac, intr,
995 ctx->f32, params, 1,
996 AC_FUNC_ATTR_READNONE);
997 return LLVMBuildFSub(ctx->builder, fsrc0, floor, "");
998 }
999
1000 static LLVMValueRef emit_uint_carry(struct nir_to_llvm_context *ctx,
1001 const char *intrin,
1002 LLVMValueRef src0, LLVMValueRef src1)
1003 {
1004 LLVMTypeRef ret_type;
1005 LLVMTypeRef types[] = { ctx->i32, ctx->i1 };
1006 LLVMValueRef res;
1007 LLVMValueRef params[] = { src0, src1 };
1008 ret_type = LLVMStructTypeInContext(ctx->context, types,
1009 2, true);
1010
1011 res = ac_build_intrinsic(&ctx->ac, intrin, ret_type,
1012 params, 2, AC_FUNC_ATTR_READNONE);
1013
1014 res = LLVMBuildExtractValue(ctx->builder, res, 1, "");
1015 res = LLVMBuildZExt(ctx->builder, res, ctx->i32, "");
1016 return res;
1017 }
1018
1019 static LLVMValueRef emit_b2f(struct nir_to_llvm_context *ctx,
1020 LLVMValueRef src0)
1021 {
1022 return LLVMBuildAnd(ctx->builder, src0, LLVMBuildBitCast(ctx->builder, LLVMConstReal(ctx->f32, 1.0), ctx->i32, ""), "");
1023 }
1024
1025 static LLVMValueRef emit_umul_high(struct nir_to_llvm_context *ctx,
1026 LLVMValueRef src0, LLVMValueRef src1)
1027 {
1028 LLVMValueRef dst64, result;
1029 src0 = LLVMBuildZExt(ctx->builder, src0, ctx->i64, "");
1030 src1 = LLVMBuildZExt(ctx->builder, src1, ctx->i64, "");
1031
1032 dst64 = LLVMBuildMul(ctx->builder, src0, src1, "");
1033 dst64 = LLVMBuildLShr(ctx->builder, dst64, LLVMConstInt(ctx->i64, 32, false), "");
1034 result = LLVMBuildTrunc(ctx->builder, dst64, ctx->i32, "");
1035 return result;
1036 }
1037
1038 static LLVMValueRef emit_imul_high(struct nir_to_llvm_context *ctx,
1039 LLVMValueRef src0, LLVMValueRef src1)
1040 {
1041 LLVMValueRef dst64, result;
1042 src0 = LLVMBuildSExt(ctx->builder, src0, ctx->i64, "");
1043 src1 = LLVMBuildSExt(ctx->builder, src1, ctx->i64, "");
1044
1045 dst64 = LLVMBuildMul(ctx->builder, src0, src1, "");
1046 dst64 = LLVMBuildAShr(ctx->builder, dst64, LLVMConstInt(ctx->i64, 32, false), "");
1047 result = LLVMBuildTrunc(ctx->builder, dst64, ctx->i32, "");
1048 return result;
1049 }
1050
1051 static LLVMValueRef emit_bitfield_extract(struct nir_to_llvm_context *ctx,
1052 bool is_signed,
1053 LLVMValueRef srcs[3])
1054 {
1055 LLVMValueRef result;
1056 LLVMValueRef icond = LLVMBuildICmp(ctx->builder, LLVMIntEQ, srcs[2], LLVMConstInt(ctx->i32, 32, false), "");
1057
1058 result = ac_build_bfe(&ctx->ac, srcs[0], srcs[1], srcs[2], is_signed);
1059 result = LLVMBuildSelect(ctx->builder, icond, srcs[0], result, "");
1060 return result;
1061 }
1062
1063 static LLVMValueRef emit_bitfield_insert(struct nir_to_llvm_context *ctx,
1064 LLVMValueRef src0, LLVMValueRef src1,
1065 LLVMValueRef src2, LLVMValueRef src3)
1066 {
1067 LLVMValueRef bfi_args[3], result;
1068
1069 bfi_args[0] = LLVMBuildShl(ctx->builder,
1070 LLVMBuildSub(ctx->builder,
1071 LLVMBuildShl(ctx->builder,
1072 ctx->i32one,
1073 src3, ""),
1074 ctx->i32one, ""),
1075 src2, "");
1076 bfi_args[1] = LLVMBuildShl(ctx->builder, src1, src2, "");
1077 bfi_args[2] = src0;
1078
1079 LLVMValueRef icond = LLVMBuildICmp(ctx->builder, LLVMIntEQ, src3, LLVMConstInt(ctx->i32, 32, false), "");
1080
1081 /* Calculate:
1082 * (arg0 & arg1) | (~arg0 & arg2) = arg2 ^ (arg0 & (arg1 ^ arg2)
1083 * Use the right-hand side, which the LLVM backend can convert to V_BFI.
1084 */
1085 result = LLVMBuildXor(ctx->builder, bfi_args[2],
1086 LLVMBuildAnd(ctx->builder, bfi_args[0],
1087 LLVMBuildXor(ctx->builder, bfi_args[1], bfi_args[2], ""), ""), "");
1088
1089 result = LLVMBuildSelect(ctx->builder, icond, src1, result, "");
1090 return result;
1091 }
1092
1093 static LLVMValueRef emit_pack_half_2x16(struct nir_to_llvm_context *ctx,
1094 LLVMValueRef src0)
1095 {
1096 LLVMValueRef const16 = LLVMConstInt(ctx->i32, 16, false);
1097 int i;
1098 LLVMValueRef comp[2];
1099
1100 src0 = to_float(ctx, src0);
1101 comp[0] = LLVMBuildExtractElement(ctx->builder, src0, ctx->i32zero, "");
1102 comp[1] = LLVMBuildExtractElement(ctx->builder, src0, ctx->i32one, "");
1103 for (i = 0; i < 2; i++) {
1104 comp[i] = LLVMBuildFPTrunc(ctx->builder, comp[i], ctx->f16, "");
1105 comp[i] = LLVMBuildBitCast(ctx->builder, comp[i], ctx->i16, "");
1106 comp[i] = LLVMBuildZExt(ctx->builder, comp[i], ctx->i32, "");
1107 }
1108
1109 comp[1] = LLVMBuildShl(ctx->builder, comp[1], const16, "");
1110 comp[0] = LLVMBuildOr(ctx->builder, comp[0], comp[1], "");
1111
1112 return comp[0];
1113 }
1114
1115 static LLVMValueRef emit_unpack_half_2x16(struct nir_to_llvm_context *ctx,
1116 LLVMValueRef src0)
1117 {
1118 LLVMValueRef const16 = LLVMConstInt(ctx->i32, 16, false);
1119 LLVMValueRef temps[2], result, val;
1120 int i;
1121
1122 for (i = 0; i < 2; i++) {
1123 val = i == 1 ? LLVMBuildLShr(ctx->builder, src0, const16, "") : src0;
1124 val = LLVMBuildTrunc(ctx->builder, val, ctx->i16, "");
1125 val = LLVMBuildBitCast(ctx->builder, val, ctx->f16, "");
1126 temps[i] = LLVMBuildFPExt(ctx->builder, val, ctx->f32, "");
1127 }
1128
1129 result = LLVMBuildInsertElement(ctx->builder, LLVMGetUndef(ctx->v2f32), temps[0],
1130 ctx->i32zero, "");
1131 result = LLVMBuildInsertElement(ctx->builder, result, temps[1],
1132 ctx->i32one, "");
1133 return result;
1134 }
1135
1136 static LLVMValueRef emit_ddxy(struct nir_to_llvm_context *ctx,
1137 nir_op op,
1138 LLVMValueRef src0)
1139 {
1140 unsigned mask;
1141 int idx;
1142 LLVMValueRef result;
1143 ctx->has_ddxy = true;
1144
1145 if (!ctx->lds && !ctx->has_ds_bpermute)
1146 ctx->lds = LLVMAddGlobalInAddressSpace(ctx->module,
1147 LLVMArrayType(ctx->i32, 64),
1148 "ddxy_lds", LOCAL_ADDR_SPACE);
1149
1150 if (op == nir_op_fddx_fine || op == nir_op_fddx)
1151 mask = AC_TID_MASK_LEFT;
1152 else if (op == nir_op_fddy_fine || op == nir_op_fddy)
1153 mask = AC_TID_MASK_TOP;
1154 else
1155 mask = AC_TID_MASK_TOP_LEFT;
1156
1157 /* for DDX we want to next X pixel, DDY next Y pixel. */
1158 if (op == nir_op_fddx_fine ||
1159 op == nir_op_fddx_coarse ||
1160 op == nir_op_fddx)
1161 idx = 1;
1162 else
1163 idx = 2;
1164
1165 result = ac_build_ddxy(&ctx->ac, ctx->has_ds_bpermute,
1166 mask, idx, ctx->lds,
1167 src0);
1168 return result;
1169 }
1170
1171 /*
1172 * this takes an I,J coordinate pair,
1173 * and works out the X and Y derivatives.
1174 * it returns DDX(I), DDX(J), DDY(I), DDY(J).
1175 */
1176 static LLVMValueRef emit_ddxy_interp(
1177 struct nir_to_llvm_context *ctx,
1178 LLVMValueRef interp_ij)
1179 {
1180 LLVMValueRef result[4], a;
1181 unsigned i;
1182
1183 for (i = 0; i < 2; i++) {
1184 a = LLVMBuildExtractElement(ctx->builder, interp_ij,
1185 LLVMConstInt(ctx->i32, i, false), "");
1186 result[i] = emit_ddxy(ctx, nir_op_fddx, a);
1187 result[2+i] = emit_ddxy(ctx, nir_op_fddy, a);
1188 }
1189 return ac_build_gather_values(&ctx->ac, result, 4);
1190 }
1191
1192 static void visit_alu(struct nir_to_llvm_context *ctx, nir_alu_instr *instr)
1193 {
1194 LLVMValueRef src[4], result = NULL;
1195 unsigned num_components = instr->dest.dest.ssa.num_components;
1196 unsigned src_components;
1197 LLVMTypeRef def_type = get_def_type(ctx, &instr->dest.dest.ssa);
1198
1199 assert(nir_op_infos[instr->op].num_inputs <= ARRAY_SIZE(src));
1200 switch (instr->op) {
1201 case nir_op_vec2:
1202 case nir_op_vec3:
1203 case nir_op_vec4:
1204 src_components = 1;
1205 break;
1206 case nir_op_pack_half_2x16:
1207 src_components = 2;
1208 break;
1209 case nir_op_unpack_half_2x16:
1210 src_components = 1;
1211 break;
1212 default:
1213 src_components = num_components;
1214 break;
1215 }
1216 for (unsigned i = 0; i < nir_op_infos[instr->op].num_inputs; i++)
1217 src[i] = get_alu_src(ctx, instr->src[i], src_components);
1218
1219 switch (instr->op) {
1220 case nir_op_fmov:
1221 case nir_op_imov:
1222 result = src[0];
1223 break;
1224 case nir_op_fneg:
1225 src[0] = to_float(ctx, src[0]);
1226 result = LLVMBuildFNeg(ctx->builder, src[0], "");
1227 break;
1228 case nir_op_ineg:
1229 result = LLVMBuildNeg(ctx->builder, src[0], "");
1230 break;
1231 case nir_op_inot:
1232 result = LLVMBuildNot(ctx->builder, src[0], "");
1233 break;
1234 case nir_op_iadd:
1235 result = LLVMBuildAdd(ctx->builder, src[0], src[1], "");
1236 break;
1237 case nir_op_fadd:
1238 src[0] = to_float(ctx, src[0]);
1239 src[1] = to_float(ctx, src[1]);
1240 result = LLVMBuildFAdd(ctx->builder, src[0], src[1], "");
1241 break;
1242 case nir_op_fsub:
1243 src[0] = to_float(ctx, src[0]);
1244 src[1] = to_float(ctx, src[1]);
1245 result = LLVMBuildFSub(ctx->builder, src[0], src[1], "");
1246 break;
1247 case nir_op_isub:
1248 result = LLVMBuildSub(ctx->builder, src[0], src[1], "");
1249 break;
1250 case nir_op_imul:
1251 result = LLVMBuildMul(ctx->builder, src[0], src[1], "");
1252 break;
1253 case nir_op_imod:
1254 result = LLVMBuildSRem(ctx->builder, src[0], src[1], "");
1255 break;
1256 case nir_op_umod:
1257 result = LLVMBuildURem(ctx->builder, src[0], src[1], "");
1258 break;
1259 case nir_op_fmod:
1260 src[0] = to_float(ctx, src[0]);
1261 src[1] = to_float(ctx, src[1]);
1262 result = ac_build_fdiv(&ctx->ac, src[0], src[1]);
1263 result = emit_intrin_1f_param(ctx, "llvm.floor",
1264 to_float_type(ctx, def_type), result);
1265 result = LLVMBuildFMul(ctx->builder, src[1] , result, "");
1266 result = LLVMBuildFSub(ctx->builder, src[0], result, "");
1267 break;
1268 case nir_op_frem:
1269 src[0] = to_float(ctx, src[0]);
1270 src[1] = to_float(ctx, src[1]);
1271 result = LLVMBuildFRem(ctx->builder, src[0], src[1], "");
1272 break;
1273 case nir_op_irem:
1274 result = LLVMBuildSRem(ctx->builder, src[0], src[1], "");
1275 break;
1276 case nir_op_idiv:
1277 result = LLVMBuildSDiv(ctx->builder, src[0], src[1], "");
1278 break;
1279 case nir_op_udiv:
1280 result = LLVMBuildUDiv(ctx->builder, src[0], src[1], "");
1281 break;
1282 case nir_op_fmul:
1283 src[0] = to_float(ctx, src[0]);
1284 src[1] = to_float(ctx, src[1]);
1285 result = LLVMBuildFMul(ctx->builder, src[0], src[1], "");
1286 break;
1287 case nir_op_fdiv:
1288 src[0] = to_float(ctx, src[0]);
1289 src[1] = to_float(ctx, src[1]);
1290 result = ac_build_fdiv(&ctx->ac, src[0], src[1]);
1291 break;
1292 case nir_op_frcp:
1293 src[0] = to_float(ctx, src[0]);
1294 result = ac_build_fdiv(&ctx->ac, ctx->f32one, src[0]);
1295 break;
1296 case nir_op_iand:
1297 result = LLVMBuildAnd(ctx->builder, src[0], src[1], "");
1298 break;
1299 case nir_op_ior:
1300 result = LLVMBuildOr(ctx->builder, src[0], src[1], "");
1301 break;
1302 case nir_op_ixor:
1303 result = LLVMBuildXor(ctx->builder, src[0], src[1], "");
1304 break;
1305 case nir_op_ishl:
1306 result = LLVMBuildShl(ctx->builder, src[0], src[1], "");
1307 break;
1308 case nir_op_ishr:
1309 result = LLVMBuildAShr(ctx->builder, src[0], src[1], "");
1310 break;
1311 case nir_op_ushr:
1312 result = LLVMBuildLShr(ctx->builder, src[0], src[1], "");
1313 break;
1314 case nir_op_ilt:
1315 result = emit_int_cmp(ctx, LLVMIntSLT, src[0], src[1]);
1316 break;
1317 case nir_op_ine:
1318 result = emit_int_cmp(ctx, LLVMIntNE, src[0], src[1]);
1319 break;
1320 case nir_op_ieq:
1321 result = emit_int_cmp(ctx, LLVMIntEQ, src[0], src[1]);
1322 break;
1323 case nir_op_ige:
1324 result = emit_int_cmp(ctx, LLVMIntSGE, src[0], src[1]);
1325 break;
1326 case nir_op_ult:
1327 result = emit_int_cmp(ctx, LLVMIntULT, src[0], src[1]);
1328 break;
1329 case nir_op_uge:
1330 result = emit_int_cmp(ctx, LLVMIntUGE, src[0], src[1]);
1331 break;
1332 case nir_op_feq:
1333 result = emit_float_cmp(ctx, LLVMRealUEQ, src[0], src[1]);
1334 break;
1335 case nir_op_fne:
1336 result = emit_float_cmp(ctx, LLVMRealUNE, src[0], src[1]);
1337 break;
1338 case nir_op_flt:
1339 result = emit_float_cmp(ctx, LLVMRealULT, src[0], src[1]);
1340 break;
1341 case nir_op_fge:
1342 result = emit_float_cmp(ctx, LLVMRealUGE, src[0], src[1]);
1343 break;
1344 case nir_op_fabs:
1345 result = emit_intrin_1f_param(ctx, "llvm.fabs",
1346 to_float_type(ctx, def_type), src[0]);
1347 break;
1348 case nir_op_iabs:
1349 result = emit_iabs(ctx, src[0]);
1350 break;
1351 case nir_op_imax:
1352 result = emit_minmax_int(ctx, LLVMIntSGT, src[0], src[1]);
1353 break;
1354 case nir_op_imin:
1355 result = emit_minmax_int(ctx, LLVMIntSLT, src[0], src[1]);
1356 break;
1357 case nir_op_umax:
1358 result = emit_minmax_int(ctx, LLVMIntUGT, src[0], src[1]);
1359 break;
1360 case nir_op_umin:
1361 result = emit_minmax_int(ctx, LLVMIntULT, src[0], src[1]);
1362 break;
1363 case nir_op_isign:
1364 result = emit_isign(ctx, src[0]);
1365 break;
1366 case nir_op_fsign:
1367 src[0] = to_float(ctx, src[0]);
1368 result = emit_fsign(ctx, src[0]);
1369 break;
1370 case nir_op_ffloor:
1371 result = emit_intrin_1f_param(ctx, "llvm.floor",
1372 to_float_type(ctx, def_type), src[0]);
1373 break;
1374 case nir_op_ftrunc:
1375 result = emit_intrin_1f_param(ctx, "llvm.trunc",
1376 to_float_type(ctx, def_type), src[0]);
1377 break;
1378 case nir_op_fceil:
1379 result = emit_intrin_1f_param(ctx, "llvm.ceil",
1380 to_float_type(ctx, def_type), src[0]);
1381 break;
1382 case nir_op_fround_even:
1383 result = emit_intrin_1f_param(ctx, "llvm.rint",
1384 to_float_type(ctx, def_type),src[0]);
1385 break;
1386 case nir_op_ffract:
1387 result = emit_ffract(ctx, src[0]);
1388 break;
1389 case nir_op_fsin:
1390 result = emit_intrin_1f_param(ctx, "llvm.sin",
1391 to_float_type(ctx, def_type), src[0]);
1392 break;
1393 case nir_op_fcos:
1394 result = emit_intrin_1f_param(ctx, "llvm.cos",
1395 to_float_type(ctx, def_type), src[0]);
1396 break;
1397 case nir_op_fsqrt:
1398 result = emit_intrin_1f_param(ctx, "llvm.sqrt",
1399 to_float_type(ctx, def_type), src[0]);
1400 break;
1401 case nir_op_fexp2:
1402 result = emit_intrin_1f_param(ctx, "llvm.exp2",
1403 to_float_type(ctx, def_type), src[0]);
1404 break;
1405 case nir_op_flog2:
1406 result = emit_intrin_1f_param(ctx, "llvm.log2",
1407 to_float_type(ctx, def_type), src[0]);
1408 break;
1409 case nir_op_frsq:
1410 result = emit_intrin_1f_param(ctx, "llvm.sqrt",
1411 to_float_type(ctx, def_type), src[0]);
1412 result = ac_build_fdiv(&ctx->ac, ctx->f32one, result);
1413 break;
1414 case nir_op_fpow:
1415 result = emit_intrin_2f_param(ctx, "llvm.pow",
1416 to_float_type(ctx, def_type), src[0], src[1]);
1417 break;
1418 case nir_op_fmax:
1419 result = emit_intrin_2f_param(ctx, "llvm.maxnum",
1420 to_float_type(ctx, def_type), src[0], src[1]);
1421 break;
1422 case nir_op_fmin:
1423 result = emit_intrin_2f_param(ctx, "llvm.minnum",
1424 to_float_type(ctx, def_type), src[0], src[1]);
1425 break;
1426 case nir_op_ffma:
1427 result = emit_intrin_3f_param(ctx, "llvm.fma",
1428 to_float_type(ctx, def_type), src[0], src[1], src[2]);
1429 break;
1430 case nir_op_ibitfield_extract:
1431 result = emit_bitfield_extract(ctx, true, src);
1432 break;
1433 case nir_op_ubitfield_extract:
1434 result = emit_bitfield_extract(ctx, false, src);
1435 break;
1436 case nir_op_bitfield_insert:
1437 result = emit_bitfield_insert(ctx, src[0], src[1], src[2], src[3]);
1438 break;
1439 case nir_op_bitfield_reverse:
1440 result = ac_build_intrinsic(&ctx->ac, "llvm.bitreverse.i32", ctx->i32, src, 1, AC_FUNC_ATTR_READNONE);
1441 break;
1442 case nir_op_bit_count:
1443 result = ac_build_intrinsic(&ctx->ac, "llvm.ctpop.i32", ctx->i32, src, 1, AC_FUNC_ATTR_READNONE);
1444 break;
1445 case nir_op_vec2:
1446 case nir_op_vec3:
1447 case nir_op_vec4:
1448 for (unsigned i = 0; i < nir_op_infos[instr->op].num_inputs; i++)
1449 src[i] = to_integer(ctx, src[i]);
1450 result = ac_build_gather_values(&ctx->ac, src, num_components);
1451 break;
1452 case nir_op_f2i32:
1453 case nir_op_f2i64:
1454 src[0] = to_float(ctx, src[0]);
1455 result = LLVMBuildFPToSI(ctx->builder, src[0], def_type, "");
1456 break;
1457 case nir_op_f2u32:
1458 case nir_op_f2u64:
1459 src[0] = to_float(ctx, src[0]);
1460 result = LLVMBuildFPToUI(ctx->builder, src[0], def_type, "");
1461 break;
1462 case nir_op_i2f32:
1463 case nir_op_i2f64:
1464 result = LLVMBuildSIToFP(ctx->builder, src[0], to_float_type(ctx, def_type), "");
1465 break;
1466 case nir_op_u2f32:
1467 case nir_op_u2f64:
1468 result = LLVMBuildUIToFP(ctx->builder, src[0], to_float_type(ctx, def_type), "");
1469 break;
1470 case nir_op_f2f64:
1471 result = LLVMBuildFPExt(ctx->builder, src[0], to_float_type(ctx, def_type), "");
1472 break;
1473 case nir_op_f2f32:
1474 result = LLVMBuildFPTrunc(ctx->builder, src[0], to_float_type(ctx, def_type), "");
1475 break;
1476 case nir_op_u2u32:
1477 case nir_op_u2u64:
1478 if (get_elem_bits(ctx, LLVMTypeOf(src[0])) < get_elem_bits(ctx, def_type))
1479 result = LLVMBuildZExt(ctx->builder, src[0], def_type, "");
1480 else
1481 result = LLVMBuildTrunc(ctx->builder, src[0], def_type, "");
1482 break;
1483 case nir_op_i2i32:
1484 case nir_op_i2i64:
1485 if (get_elem_bits(ctx, LLVMTypeOf(src[0])) < get_elem_bits(ctx, def_type))
1486 result = LLVMBuildSExt(ctx->builder, src[0], def_type, "");
1487 else
1488 result = LLVMBuildTrunc(ctx->builder, src[0], def_type, "");
1489 break;
1490 case nir_op_bcsel:
1491 result = emit_bcsel(ctx, src[0], src[1], src[2]);
1492 break;
1493 case nir_op_find_lsb:
1494 result = emit_find_lsb(ctx, src[0]);
1495 break;
1496 case nir_op_ufind_msb:
1497 result = emit_ufind_msb(ctx, src[0]);
1498 break;
1499 case nir_op_ifind_msb:
1500 result = emit_ifind_msb(ctx, src[0]);
1501 break;
1502 case nir_op_uadd_carry:
1503 result = emit_uint_carry(ctx, "llvm.uadd.with.overflow.i32", src[0], src[1]);
1504 break;
1505 case nir_op_usub_borrow:
1506 result = emit_uint_carry(ctx, "llvm.usub.with.overflow.i32", src[0], src[1]);
1507 break;
1508 case nir_op_b2f:
1509 result = emit_b2f(ctx, src[0]);
1510 break;
1511 case nir_op_fquantize2f16:
1512 src[0] = to_float(ctx, src[0]);
1513 result = LLVMBuildFPTrunc(ctx->builder, src[0], ctx->f16, "");
1514 /* need to convert back up to f32 */
1515 result = LLVMBuildFPExt(ctx->builder, result, ctx->f32, "");
1516 break;
1517 case nir_op_umul_high:
1518 result = emit_umul_high(ctx, src[0], src[1]);
1519 break;
1520 case nir_op_imul_high:
1521 result = emit_imul_high(ctx, src[0], src[1]);
1522 break;
1523 case nir_op_pack_half_2x16:
1524 result = emit_pack_half_2x16(ctx, src[0]);
1525 break;
1526 case nir_op_unpack_half_2x16:
1527 result = emit_unpack_half_2x16(ctx, src[0]);
1528 break;
1529 case nir_op_fddx:
1530 case nir_op_fddy:
1531 case nir_op_fddx_fine:
1532 case nir_op_fddy_fine:
1533 case nir_op_fddx_coarse:
1534 case nir_op_fddy_coarse:
1535 result = emit_ddxy(ctx, instr->op, src[0]);
1536 break;
1537 default:
1538 fprintf(stderr, "Unknown NIR alu instr: ");
1539 nir_print_instr(&instr->instr, stderr);
1540 fprintf(stderr, "\n");
1541 abort();
1542 }
1543
1544 if (result) {
1545 assert(instr->dest.dest.is_ssa);
1546 result = to_integer(ctx, result);
1547 _mesa_hash_table_insert(ctx->defs, &instr->dest.dest.ssa,
1548 result);
1549 }
1550 }
1551
1552 static void visit_load_const(struct nir_to_llvm_context *ctx,
1553 nir_load_const_instr *instr)
1554 {
1555 LLVMValueRef values[4], value = NULL;
1556 LLVMTypeRef element_type =
1557 LLVMIntTypeInContext(ctx->context, instr->def.bit_size);
1558
1559 for (unsigned i = 0; i < instr->def.num_components; ++i) {
1560 switch (instr->def.bit_size) {
1561 case 32:
1562 values[i] = LLVMConstInt(element_type,
1563 instr->value.u32[i], false);
1564 break;
1565 case 64:
1566 values[i] = LLVMConstInt(element_type,
1567 instr->value.u64[i], false);
1568 break;
1569 default:
1570 fprintf(stderr,
1571 "unsupported nir load_const bit_size: %d\n",
1572 instr->def.bit_size);
1573 abort();
1574 }
1575 }
1576 if (instr->def.num_components > 1) {
1577 value = LLVMConstVector(values, instr->def.num_components);
1578 } else
1579 value = values[0];
1580
1581 _mesa_hash_table_insert(ctx->defs, &instr->def, value);
1582 }
1583
1584 static LLVMValueRef cast_ptr(struct nir_to_llvm_context *ctx, LLVMValueRef ptr,
1585 LLVMTypeRef type)
1586 {
1587 int addr_space = LLVMGetPointerAddressSpace(LLVMTypeOf(ptr));
1588 return LLVMBuildBitCast(ctx->builder, ptr,
1589 LLVMPointerType(type, addr_space), "");
1590 }
1591
1592 static LLVMValueRef
1593 get_buffer_size(struct nir_to_llvm_context *ctx, LLVMValueRef descriptor, bool in_elements)
1594 {
1595 LLVMValueRef size =
1596 LLVMBuildExtractElement(ctx->builder, descriptor,
1597 LLVMConstInt(ctx->i32, 2, false), "");
1598
1599 /* VI only */
1600 if (ctx->options->chip_class >= VI && in_elements) {
1601 /* On VI, the descriptor contains the size in bytes,
1602 * but TXQ must return the size in elements.
1603 * The stride is always non-zero for resources using TXQ.
1604 */
1605 LLVMValueRef stride =
1606 LLVMBuildExtractElement(ctx->builder, descriptor,
1607 LLVMConstInt(ctx->i32, 1, false), "");
1608 stride = LLVMBuildLShr(ctx->builder, stride,
1609 LLVMConstInt(ctx->i32, 16, false), "");
1610 stride = LLVMBuildAnd(ctx->builder, stride,
1611 LLVMConstInt(ctx->i32, 0x3fff, false), "");
1612
1613 size = LLVMBuildUDiv(ctx->builder, size, stride, "");
1614 }
1615 return size;
1616 }
1617
1618 /**
1619 * Given the i32 or vNi32 \p type, generate the textual name (e.g. for use with
1620 * intrinsic names).
1621 */
1622 static void build_int_type_name(
1623 LLVMTypeRef type,
1624 char *buf, unsigned bufsize)
1625 {
1626 assert(bufsize >= 6);
1627
1628 if (LLVMGetTypeKind(type) == LLVMVectorTypeKind)
1629 snprintf(buf, bufsize, "v%ui32",
1630 LLVMGetVectorSize(type));
1631 else
1632 strcpy(buf, "i32");
1633 }
1634
1635 static LLVMValueRef radv_lower_gather4_integer(struct nir_to_llvm_context *ctx,
1636 struct ac_image_args *args,
1637 nir_tex_instr *instr)
1638 {
1639 enum glsl_base_type stype = glsl_get_sampler_result_type(instr->texture->var->type);
1640 LLVMValueRef coord = args->addr;
1641 LLVMValueRef half_texel[2];
1642 LLVMValueRef compare_cube_wa;
1643 LLVMValueRef result;
1644 int c;
1645 unsigned coord_vgpr_index = (unsigned)args->offset + (unsigned)args->compare;
1646
1647 //TODO Rect
1648 {
1649 struct ac_image_args txq_args = { 0 };
1650
1651 txq_args.da = instr->is_array || instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE;
1652 txq_args.opcode = ac_image_get_resinfo;
1653 txq_args.dmask = 0xf;
1654 txq_args.addr = ctx->i32zero;
1655 txq_args.resource = args->resource;
1656 LLVMValueRef size = ac_build_image_opcode(&ctx->ac, &txq_args);
1657
1658 for (c = 0; c < 2; c++) {
1659 half_texel[c] = LLVMBuildExtractElement(ctx->builder, size,
1660 LLVMConstInt(ctx->i32, c, false), "");
1661 half_texel[c] = LLVMBuildUIToFP(ctx->builder, half_texel[c], ctx->f32, "");
1662 half_texel[c] = ac_build_fdiv(&ctx->ac, ctx->f32one, half_texel[c]);
1663 half_texel[c] = LLVMBuildFMul(ctx->builder, half_texel[c],
1664 LLVMConstReal(ctx->f32, -0.5), "");
1665 }
1666 }
1667
1668 LLVMValueRef orig_coords = args->addr;
1669
1670 for (c = 0; c < 2; c++) {
1671 LLVMValueRef tmp;
1672 LLVMValueRef index = LLVMConstInt(ctx->i32, coord_vgpr_index + c, 0);
1673 tmp = LLVMBuildExtractElement(ctx->builder, coord, index, "");
1674 tmp = LLVMBuildBitCast(ctx->builder, tmp, ctx->f32, "");
1675 tmp = LLVMBuildFAdd(ctx->builder, tmp, half_texel[c], "");
1676 tmp = LLVMBuildBitCast(ctx->builder, tmp, ctx->i32, "");
1677 coord = LLVMBuildInsertElement(ctx->builder, coord, tmp, index, "");
1678 }
1679
1680
1681 /*
1682 * Apparantly cube has issue with integer types that the workaround doesn't solve,
1683 * so this tests if the format is 8_8_8_8 and an integer type do an alternate
1684 * workaround by sampling using a scaled type and converting.
1685 * This is taken from amdgpu-pro shaders.
1686 */
1687 /* NOTE this produces some ugly code compared to amdgpu-pro,
1688 * LLVM ends up dumping SGPRs into VGPRs to deal with the compare/select,
1689 * and then reads them back. -pro generates two selects,
1690 * one s_cmp for the descriptor rewriting
1691 * one v_cmp for the coordinate and result changes.
1692 */
1693 if (instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE) {
1694 LLVMValueRef tmp, tmp2;
1695
1696 /* workaround 8/8/8/8 uint/sint cube gather bug */
1697 /* first detect it then change to a scaled read and f2i */
1698 tmp = LLVMBuildExtractElement(ctx->builder, args->resource, ctx->i32one, "");
1699 tmp2 = tmp;
1700
1701 /* extract the DATA_FORMAT */
1702 tmp = ac_build_bfe(&ctx->ac, tmp, LLVMConstInt(ctx->i32, 20, false),
1703 LLVMConstInt(ctx->i32, 6, false), false);
1704
1705 /* is the DATA_FORMAT == 8_8_8_8 */
1706 compare_cube_wa = LLVMBuildICmp(ctx->builder, LLVMIntEQ, tmp, LLVMConstInt(ctx->i32, V_008F14_IMG_DATA_FORMAT_8_8_8_8, false), "");
1707
1708 if (stype == GLSL_TYPE_UINT)
1709 /* Create a NUM FORMAT - 0x2 or 0x4 - USCALED or UINT */
1710 tmp = LLVMBuildSelect(ctx->builder, compare_cube_wa, LLVMConstInt(ctx->i32, 0x8000000, false),
1711 LLVMConstInt(ctx->i32, 0x10000000, false), "");
1712 else
1713 /* Create a NUM FORMAT - 0x3 or 0x5 - SSCALED or SINT */
1714 tmp = LLVMBuildSelect(ctx->builder, compare_cube_wa, LLVMConstInt(ctx->i32, 0xc000000, false),
1715 LLVMConstInt(ctx->i32, 0x14000000, false), "");
1716
1717 /* replace the NUM FORMAT in the descriptor */
1718 tmp2 = LLVMBuildAnd(ctx->builder, tmp2, LLVMConstInt(ctx->i32, C_008F14_NUM_FORMAT, false), "");
1719 tmp2 = LLVMBuildOr(ctx->builder, tmp2, tmp, "");
1720
1721 args->resource = LLVMBuildInsertElement(ctx->builder, args->resource, tmp2, ctx->i32one, "");
1722
1723 /* don't modify the coordinates for this case */
1724 coord = LLVMBuildSelect(ctx->builder, compare_cube_wa, orig_coords, coord, "");
1725 }
1726 args->addr = coord;
1727 result = ac_build_image_opcode(&ctx->ac, args);
1728
1729 if (instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE) {
1730 LLVMValueRef tmp, tmp2;
1731
1732 /* if the cube workaround is in place, f2i the result. */
1733 for (c = 0; c < 4; c++) {
1734 tmp = LLVMBuildExtractElement(ctx->builder, result, LLVMConstInt(ctx->i32, c, false), "");
1735 if (stype == GLSL_TYPE_UINT)
1736 tmp2 = LLVMBuildFPToUI(ctx->builder, tmp, ctx->i32, "");
1737 else
1738 tmp2 = LLVMBuildFPToSI(ctx->builder, tmp, ctx->i32, "");
1739 tmp = LLVMBuildBitCast(ctx->builder, tmp, ctx->i32, "");
1740 tmp2 = LLVMBuildBitCast(ctx->builder, tmp2, ctx->i32, "");
1741 tmp = LLVMBuildSelect(ctx->builder, compare_cube_wa, tmp2, tmp, "");
1742 tmp = LLVMBuildBitCast(ctx->builder, tmp, ctx->f32, "");
1743 result = LLVMBuildInsertElement(ctx->builder, result, tmp, LLVMConstInt(ctx->i32, c, false), "");
1744 }
1745 }
1746 return result;
1747 }
1748
1749 static LLVMValueRef build_tex_intrinsic(struct nir_to_llvm_context *ctx,
1750 nir_tex_instr *instr,
1751 struct ac_image_args *args)
1752 {
1753 if (instr->sampler_dim == GLSL_SAMPLER_DIM_BUF) {
1754 return ac_build_buffer_load_format(&ctx->ac,
1755 args->resource,
1756 args->addr,
1757 LLVMConstInt(ctx->i32, 0, false),
1758 true);
1759 }
1760
1761 args->opcode = ac_image_sample;
1762 args->compare = instr->is_shadow;
1763
1764 switch (instr->op) {
1765 case nir_texop_txf:
1766 case nir_texop_txf_ms:
1767 case nir_texop_samples_identical:
1768 args->opcode = instr->sampler_dim == GLSL_SAMPLER_DIM_MS ? ac_image_load : ac_image_load_mip;
1769 args->compare = false;
1770 args->offset = false;
1771 break;
1772 case nir_texop_txb:
1773 args->bias = true;
1774 break;
1775 case nir_texop_txl:
1776 args->lod = true;
1777 break;
1778 case nir_texop_txs:
1779 case nir_texop_query_levels:
1780 args->opcode = ac_image_get_resinfo;
1781 break;
1782 case nir_texop_tex:
1783 if (ctx->stage != MESA_SHADER_FRAGMENT)
1784 args->level_zero = true;
1785 break;
1786 case nir_texop_txd:
1787 args->deriv = true;
1788 break;
1789 case nir_texop_tg4:
1790 args->opcode = ac_image_gather4;
1791 args->level_zero = true;
1792 break;
1793 case nir_texop_lod:
1794 args->opcode = ac_image_get_lod;
1795 args->compare = false;
1796 args->offset = false;
1797 break;
1798 default:
1799 break;
1800 }
1801
1802 if (instr->op == nir_texop_tg4) {
1803 enum glsl_base_type stype = glsl_get_sampler_result_type(instr->texture->var->type);
1804 if (stype == GLSL_TYPE_UINT || stype == GLSL_TYPE_INT) {
1805 return radv_lower_gather4_integer(ctx, args, instr);
1806 }
1807 }
1808 return ac_build_image_opcode(&ctx->ac, args);
1809 }
1810
1811 static LLVMValueRef visit_vulkan_resource_index(struct nir_to_llvm_context *ctx,
1812 nir_intrinsic_instr *instr)
1813 {
1814 LLVMValueRef index = get_src(ctx, instr->src[0]);
1815 unsigned desc_set = nir_intrinsic_desc_set(instr);
1816 unsigned binding = nir_intrinsic_binding(instr);
1817 LLVMValueRef desc_ptr = ctx->descriptor_sets[desc_set];
1818 struct radv_pipeline_layout *pipeline_layout = ctx->options->layout;
1819 struct radv_descriptor_set_layout *layout = pipeline_layout->set[desc_set].layout;
1820 unsigned base_offset = layout->binding[binding].offset;
1821 LLVMValueRef offset, stride;
1822
1823 if (layout->binding[binding].type == VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC ||
1824 layout->binding[binding].type == VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC) {
1825 unsigned idx = pipeline_layout->set[desc_set].dynamic_offset_start +
1826 layout->binding[binding].dynamic_offset_offset;
1827 desc_ptr = ctx->push_constants;
1828 base_offset = pipeline_layout->push_constant_size + 16 * idx;
1829 stride = LLVMConstInt(ctx->i32, 16, false);
1830 } else
1831 stride = LLVMConstInt(ctx->i32, layout->binding[binding].size, false);
1832
1833 offset = LLVMConstInt(ctx->i32, base_offset, false);
1834 index = LLVMBuildMul(ctx->builder, index, stride, "");
1835 offset = LLVMBuildAdd(ctx->builder, offset, index, "");
1836
1837 desc_ptr = ac_build_gep0(&ctx->ac, desc_ptr, offset);
1838 desc_ptr = cast_ptr(ctx, desc_ptr, ctx->v4i32);
1839 LLVMSetMetadata(desc_ptr, ctx->uniform_md_kind, ctx->empty_md);
1840
1841 return LLVMBuildLoad(ctx->builder, desc_ptr, "");
1842 }
1843
1844 static LLVMValueRef visit_load_push_constant(struct nir_to_llvm_context *ctx,
1845 nir_intrinsic_instr *instr)
1846 {
1847 LLVMValueRef ptr, addr;
1848
1849 addr = LLVMConstInt(ctx->i32, nir_intrinsic_base(instr), 0);
1850 addr = LLVMBuildAdd(ctx->builder, addr, get_src(ctx, instr->src[0]), "");
1851
1852 ptr = ac_build_gep0(&ctx->ac, ctx->push_constants, addr);
1853 ptr = cast_ptr(ctx, ptr, get_def_type(ctx, &instr->dest.ssa));
1854
1855 return LLVMBuildLoad(ctx->builder, ptr, "");
1856 }
1857
1858 static LLVMValueRef visit_get_buffer_size(struct nir_to_llvm_context *ctx,
1859 nir_intrinsic_instr *instr)
1860 {
1861 LLVMValueRef desc = get_src(ctx, instr->src[0]);
1862
1863 return get_buffer_size(ctx, desc, false);
1864 }
1865 static void visit_store_ssbo(struct nir_to_llvm_context *ctx,
1866 nir_intrinsic_instr *instr)
1867 {
1868 const char *store_name;
1869 LLVMValueRef src_data = get_src(ctx, instr->src[0]);
1870 LLVMTypeRef data_type = ctx->f32;
1871 int elem_size_mult = get_elem_bits(ctx, LLVMTypeOf(src_data)) / 32;
1872 int components_32bit = elem_size_mult * instr->num_components;
1873 unsigned writemask = nir_intrinsic_write_mask(instr);
1874 LLVMValueRef base_data, base_offset;
1875 LLVMValueRef params[6];
1876
1877 if (ctx->stage == MESA_SHADER_FRAGMENT)
1878 ctx->shader_info->fs.writes_memory = true;
1879
1880 params[1] = get_src(ctx, instr->src[1]);
1881 params[2] = LLVMConstInt(ctx->i32, 0, false); /* vindex */
1882 params[4] = ctx->i1false; /* glc */
1883 params[5] = ctx->i1false; /* slc */
1884
1885 if (components_32bit > 1)
1886 data_type = LLVMVectorType(ctx->f32, components_32bit);
1887
1888 base_data = to_float(ctx, src_data);
1889 base_data = trim_vector(ctx, base_data, instr->num_components);
1890 base_data = LLVMBuildBitCast(ctx->builder, base_data,
1891 data_type, "");
1892 base_offset = get_src(ctx, instr->src[2]); /* voffset */
1893 while (writemask) {
1894 int start, count;
1895 LLVMValueRef data;
1896 LLVMValueRef offset;
1897 LLVMValueRef tmp;
1898 u_bit_scan_consecutive_range(&writemask, &start, &count);
1899
1900 /* Due to an LLVM limitation, split 3-element writes
1901 * into a 2-element and a 1-element write. */
1902 if (count == 3) {
1903 writemask |= 1 << (start + 2);
1904 count = 2;
1905 }
1906
1907 start *= elem_size_mult;
1908 count *= elem_size_mult;
1909
1910 if (count > 4) {
1911 writemask |= ((1u << (count - 4)) - 1u) << (start + 4);
1912 count = 4;
1913 }
1914
1915 if (count == 4) {
1916 store_name = "llvm.amdgcn.buffer.store.v4f32";
1917 data = base_data;
1918 } else if (count == 2) {
1919 tmp = LLVMBuildExtractElement(ctx->builder,
1920 base_data, LLVMConstInt(ctx->i32, start, false), "");
1921 data = LLVMBuildInsertElement(ctx->builder, LLVMGetUndef(ctx->v2f32), tmp,
1922 ctx->i32zero, "");
1923
1924 tmp = LLVMBuildExtractElement(ctx->builder,
1925 base_data, LLVMConstInt(ctx->i32, start + 1, false), "");
1926 data = LLVMBuildInsertElement(ctx->builder, data, tmp,
1927 ctx->i32one, "");
1928 store_name = "llvm.amdgcn.buffer.store.v2f32";
1929
1930 } else {
1931 assert(count == 1);
1932 if (get_llvm_num_components(base_data) > 1)
1933 data = LLVMBuildExtractElement(ctx->builder, base_data,
1934 LLVMConstInt(ctx->i32, start, false), "");
1935 else
1936 data = base_data;
1937 store_name = "llvm.amdgcn.buffer.store.f32";
1938 }
1939
1940 offset = base_offset;
1941 if (start != 0) {
1942 offset = LLVMBuildAdd(ctx->builder, offset, LLVMConstInt(ctx->i32, start * 4, false), "");
1943 }
1944 params[0] = data;
1945 params[3] = offset;
1946 ac_build_intrinsic(&ctx->ac, store_name,
1947 ctx->voidt, params, 6, 0);
1948 }
1949 }
1950
1951 static LLVMValueRef visit_atomic_ssbo(struct nir_to_llvm_context *ctx,
1952 nir_intrinsic_instr *instr)
1953 {
1954 const char *name;
1955 LLVMValueRef params[6];
1956 int arg_count = 0;
1957 if (ctx->stage == MESA_SHADER_FRAGMENT)
1958 ctx->shader_info->fs.writes_memory = true;
1959
1960 if (instr->intrinsic == nir_intrinsic_ssbo_atomic_comp_swap) {
1961 params[arg_count++] = llvm_extract_elem(ctx, get_src(ctx, instr->src[3]), 0);
1962 }
1963 params[arg_count++] = llvm_extract_elem(ctx, get_src(ctx, instr->src[2]), 0);
1964 params[arg_count++] = get_src(ctx, instr->src[0]);
1965 params[arg_count++] = LLVMConstInt(ctx->i32, 0, false); /* vindex */
1966 params[arg_count++] = get_src(ctx, instr->src[1]); /* voffset */
1967 params[arg_count++] = ctx->i1false; /* slc */
1968
1969 switch (instr->intrinsic) {
1970 case nir_intrinsic_ssbo_atomic_add:
1971 name = "llvm.amdgcn.buffer.atomic.add";
1972 break;
1973 case nir_intrinsic_ssbo_atomic_imin:
1974 name = "llvm.amdgcn.buffer.atomic.smin";
1975 break;
1976 case nir_intrinsic_ssbo_atomic_umin:
1977 name = "llvm.amdgcn.buffer.atomic.umin";
1978 break;
1979 case nir_intrinsic_ssbo_atomic_imax:
1980 name = "llvm.amdgcn.buffer.atomic.smax";
1981 break;
1982 case nir_intrinsic_ssbo_atomic_umax:
1983 name = "llvm.amdgcn.buffer.atomic.umax";
1984 break;
1985 case nir_intrinsic_ssbo_atomic_and:
1986 name = "llvm.amdgcn.buffer.atomic.and";
1987 break;
1988 case nir_intrinsic_ssbo_atomic_or:
1989 name = "llvm.amdgcn.buffer.atomic.or";
1990 break;
1991 case nir_intrinsic_ssbo_atomic_xor:
1992 name = "llvm.amdgcn.buffer.atomic.xor";
1993 break;
1994 case nir_intrinsic_ssbo_atomic_exchange:
1995 name = "llvm.amdgcn.buffer.atomic.swap";
1996 break;
1997 case nir_intrinsic_ssbo_atomic_comp_swap:
1998 name = "llvm.amdgcn.buffer.atomic.cmpswap";
1999 break;
2000 default:
2001 abort();
2002 }
2003
2004 return ac_build_intrinsic(&ctx->ac, name, ctx->i32, params, arg_count, 0);
2005 }
2006
2007 static LLVMValueRef visit_load_buffer(struct nir_to_llvm_context *ctx,
2008 nir_intrinsic_instr *instr)
2009 {
2010 LLVMValueRef results[2];
2011 int load_components;
2012 int num_components = instr->num_components;
2013 if (instr->dest.ssa.bit_size == 64)
2014 num_components *= 2;
2015
2016 for (int i = 0; i < num_components; i += load_components) {
2017 load_components = MIN2(num_components - i, 4);
2018 const char *load_name;
2019 LLVMTypeRef data_type = ctx->f32;
2020 LLVMValueRef offset = LLVMConstInt(ctx->i32, i * 4, false);
2021 offset = LLVMBuildAdd(ctx->builder, get_src(ctx, instr->src[1]), offset, "");
2022
2023 if (load_components == 3)
2024 data_type = LLVMVectorType(ctx->f32, 4);
2025 else if (load_components > 1)
2026 data_type = LLVMVectorType(ctx->f32, load_components);
2027
2028 if (load_components >= 3)
2029 load_name = "llvm.amdgcn.buffer.load.v4f32";
2030 else if (load_components == 2)
2031 load_name = "llvm.amdgcn.buffer.load.v2f32";
2032 else if (load_components == 1)
2033 load_name = "llvm.amdgcn.buffer.load.f32";
2034 else
2035 unreachable("unhandled number of components");
2036
2037 LLVMValueRef params[] = {
2038 get_src(ctx, instr->src[0]),
2039 LLVMConstInt(ctx->i32, 0, false),
2040 offset,
2041 ctx->i1false,
2042 ctx->i1false,
2043 };
2044
2045 results[i] = ac_build_intrinsic(&ctx->ac, load_name, data_type, params, 5, 0);
2046
2047 }
2048
2049 LLVMValueRef ret = results[0];
2050 if (num_components > 4 || num_components == 3) {
2051 LLVMValueRef masks[] = {
2052 LLVMConstInt(ctx->i32, 0, false), LLVMConstInt(ctx->i32, 1, false),
2053 LLVMConstInt(ctx->i32, 2, false), LLVMConstInt(ctx->i32, 3, false),
2054 LLVMConstInt(ctx->i32, 4, false), LLVMConstInt(ctx->i32, 5, false),
2055 LLVMConstInt(ctx->i32, 6, false), LLVMConstInt(ctx->i32, 7, false)
2056 };
2057
2058 LLVMValueRef swizzle = LLVMConstVector(masks, num_components);
2059 ret = LLVMBuildShuffleVector(ctx->builder, results[0],
2060 results[num_components > 4 ? 1 : 0], swizzle, "");
2061 }
2062
2063 return LLVMBuildBitCast(ctx->builder, ret,
2064 get_def_type(ctx, &instr->dest.ssa), "");
2065 }
2066
2067 static LLVMValueRef visit_load_ubo_buffer(struct nir_to_llvm_context *ctx,
2068 nir_intrinsic_instr *instr)
2069 {
2070 LLVMValueRef results[8], ret;
2071 LLVMValueRef rsrc = get_src(ctx, instr->src[0]);
2072 LLVMValueRef offset = get_src(ctx, instr->src[1]);
2073 int num_components = instr->num_components;
2074
2075 rsrc = LLVMBuildBitCast(ctx->builder, rsrc, LLVMVectorType(ctx->i8, 16), "");
2076
2077 if (instr->dest.ssa.bit_size == 64)
2078 num_components *= 2;
2079
2080 for (unsigned i = 0; i < num_components; ++i) {
2081 LLVMValueRef params[] = {
2082 rsrc,
2083 LLVMBuildAdd(ctx->builder, LLVMConstInt(ctx->i32, 4 * i, 0),
2084 offset, "")
2085 };
2086 results[i] = ac_build_intrinsic(&ctx->ac, "llvm.SI.load.const", ctx->f32,
2087 params, 2,
2088 AC_FUNC_ATTR_READNONE |
2089 AC_FUNC_ATTR_LEGACY);
2090 }
2091
2092
2093 ret = ac_build_gather_values(&ctx->ac, results, instr->num_components);
2094 return LLVMBuildBitCast(ctx->builder, ret,
2095 get_def_type(ctx, &instr->dest.ssa), "");
2096 }
2097
2098 static void
2099 radv_get_deref_offset(struct nir_to_llvm_context *ctx, nir_deref *tail,
2100 bool vs_in, unsigned *vertex_index_out,
2101 unsigned *const_out, LLVMValueRef *indir_out)
2102 {
2103 unsigned const_offset = 0;
2104 LLVMValueRef offset = NULL;
2105
2106 if (vertex_index_out != NULL) {
2107 tail = tail->child;
2108 nir_deref_array *deref_array = nir_deref_as_array(tail);
2109 *vertex_index_out = deref_array->base_offset;
2110 }
2111
2112 while (tail->child != NULL) {
2113 const struct glsl_type *parent_type = tail->type;
2114 tail = tail->child;
2115
2116 if (tail->deref_type == nir_deref_type_array) {
2117 nir_deref_array *deref_array = nir_deref_as_array(tail);
2118 LLVMValueRef index, stride, local_offset;
2119 unsigned size = glsl_count_attribute_slots(tail->type, vs_in);
2120
2121 const_offset += size * deref_array->base_offset;
2122 if (deref_array->deref_array_type == nir_deref_array_type_direct)
2123 continue;
2124
2125 assert(deref_array->deref_array_type == nir_deref_array_type_indirect);
2126 index = get_src(ctx, deref_array->indirect);
2127 stride = LLVMConstInt(ctx->i32, size, 0);
2128 local_offset = LLVMBuildMul(ctx->builder, stride, index, "");
2129
2130 if (offset)
2131 offset = LLVMBuildAdd(ctx->builder, offset, local_offset, "");
2132 else
2133 offset = local_offset;
2134 } else if (tail->deref_type == nir_deref_type_struct) {
2135 nir_deref_struct *deref_struct = nir_deref_as_struct(tail);
2136
2137 for (unsigned i = 0; i < deref_struct->index; i++) {
2138 const struct glsl_type *ft = glsl_get_struct_field(parent_type, i);
2139 const_offset += glsl_count_attribute_slots(ft, vs_in);
2140 }
2141 } else
2142 unreachable("unsupported deref type");
2143
2144 }
2145
2146 if (const_offset && offset)
2147 offset = LLVMBuildAdd(ctx->builder, offset,
2148 LLVMConstInt(ctx->i32, const_offset, 0),
2149 "");
2150
2151 *const_out = const_offset;
2152 *indir_out = offset;
2153 }
2154
2155 static LLVMValueRef
2156 load_gs_input(struct nir_to_llvm_context *ctx,
2157 nir_intrinsic_instr *instr)
2158 {
2159 LLVMValueRef indir_index, vtx_offset;
2160 unsigned const_index;
2161 LLVMValueRef args[9];
2162 unsigned param, vtx_offset_param;
2163 LLVMValueRef value[4], result;
2164 unsigned vertex_index;
2165 unsigned cull_offset = 0;
2166 radv_get_deref_offset(ctx, &instr->variables[0]->deref,
2167 false, &vertex_index,
2168 &const_index, &indir_index);
2169 vtx_offset_param = vertex_index;
2170 assert(vtx_offset_param < 6);
2171 vtx_offset = LLVMBuildMul(ctx->builder, ctx->gs_vtx_offset[vtx_offset_param],
2172 LLVMConstInt(ctx->i32, 4, false), "");
2173
2174 param = shader_io_get_unique_index(instr->variables[0]->var->data.location);
2175 if (instr->variables[0]->var->data.location == VARYING_SLOT_CULL_DIST0)
2176 cull_offset += ctx->num_input_clips;
2177 for (unsigned i = 0; i < instr->num_components; i++) {
2178
2179 args[0] = ctx->esgs_ring;
2180 args[1] = vtx_offset;
2181 args[2] = LLVMConstInt(ctx->i32, (param * 4 + i + const_index + cull_offset) * 256, false);
2182 args[3] = ctx->i32zero;
2183 args[4] = ctx->i32one; /* OFFEN */
2184 args[5] = ctx->i32zero; /* IDXEN */
2185 args[6] = ctx->i32one; /* GLC */
2186 args[7] = ctx->i32zero; /* SLC */
2187 args[8] = ctx->i32zero; /* TFE */
2188
2189 value[i] = ac_build_intrinsic(&ctx->ac, "llvm.SI.buffer.load.dword.i32.i32",
2190 ctx->i32, args, 9,
2191 AC_FUNC_ATTR_READONLY |
2192 AC_FUNC_ATTR_LEGACY);
2193 }
2194 result = ac_build_gather_values(&ctx->ac, value, instr->num_components);
2195
2196 return result;
2197 }
2198
2199 static LLVMValueRef visit_load_var(struct nir_to_llvm_context *ctx,
2200 nir_intrinsic_instr *instr)
2201 {
2202 LLVMValueRef values[8];
2203 int idx = instr->variables[0]->var->data.driver_location;
2204 int ve = instr->dest.ssa.num_components;
2205 LLVMValueRef indir_index;
2206 LLVMValueRef ret;
2207 unsigned const_index;
2208 bool vs_in = ctx->stage == MESA_SHADER_VERTEX &&
2209 instr->variables[0]->var->data.mode == nir_var_shader_in;
2210 radv_get_deref_offset(ctx, &instr->variables[0]->deref, vs_in, NULL,
2211 &const_index, &indir_index);
2212
2213 if (instr->dest.ssa.bit_size == 64)
2214 ve *= 2;
2215
2216 switch (instr->variables[0]->var->data.mode) {
2217 case nir_var_shader_in:
2218 if (ctx->stage == MESA_SHADER_GEOMETRY) {
2219 return load_gs_input(ctx, instr);
2220 }
2221 for (unsigned chan = 0; chan < ve; chan++) {
2222 if (indir_index) {
2223 unsigned count = glsl_count_attribute_slots(
2224 instr->variables[0]->var->type,
2225 ctx->stage == MESA_SHADER_VERTEX);
2226 count -= chan / 4;
2227 LLVMValueRef tmp_vec = ac_build_gather_values_extended(
2228 &ctx->ac, ctx->inputs + idx + chan, count,
2229 4, false);
2230
2231 values[chan] = LLVMBuildExtractElement(ctx->builder,
2232 tmp_vec,
2233 indir_index, "");
2234 } else
2235 values[chan] = ctx->inputs[idx + chan + const_index * 4];
2236 }
2237 break;
2238 case nir_var_local:
2239 for (unsigned chan = 0; chan < ve; chan++) {
2240 if (indir_index) {
2241 unsigned count = glsl_count_attribute_slots(
2242 instr->variables[0]->var->type, false);
2243 count -= chan / 4;
2244 LLVMValueRef tmp_vec = ac_build_gather_values_extended(
2245 &ctx->ac, ctx->locals + idx + chan, count,
2246 4, true);
2247
2248 values[chan] = LLVMBuildExtractElement(ctx->builder,
2249 tmp_vec,
2250 indir_index, "");
2251 } else {
2252 values[chan] = LLVMBuildLoad(ctx->builder, ctx->locals[idx + chan + const_index * 4], "");
2253 }
2254 }
2255 break;
2256 case nir_var_shader_out:
2257 for (unsigned chan = 0; chan < ve; chan++) {
2258 if (indir_index) {
2259 unsigned count = glsl_count_attribute_slots(
2260 instr->variables[0]->var->type, false);
2261 count -= chan / 4;
2262 LLVMValueRef tmp_vec = ac_build_gather_values_extended(
2263 &ctx->ac, ctx->outputs + idx + chan, count,
2264 4, true);
2265
2266 values[chan] = LLVMBuildExtractElement(ctx->builder,
2267 tmp_vec,
2268 indir_index, "");
2269 } else {
2270 values[chan] = LLVMBuildLoad(ctx->builder,
2271 ctx->outputs[idx + chan + const_index * 4],
2272 "");
2273 }
2274 }
2275 break;
2276 case nir_var_shared: {
2277 LLVMValueRef ptr = get_shared_memory_ptr(ctx, idx, ctx->i32);
2278 LLVMValueRef derived_ptr;
2279
2280 if (indir_index)
2281 indir_index = LLVMBuildMul(ctx->builder, indir_index, LLVMConstInt(ctx->i32, 4, false), "");
2282
2283 for (unsigned chan = 0; chan < ve; chan++) {
2284 LLVMValueRef index = LLVMConstInt(ctx->i32, chan, false);
2285 if (indir_index)
2286 index = LLVMBuildAdd(ctx->builder, index, indir_index, "");
2287 derived_ptr = LLVMBuildGEP(ctx->builder, ptr, &index, 1, "");
2288
2289 values[chan] = LLVMBuildLoad(ctx->builder, derived_ptr, "");
2290 }
2291 break;
2292 }
2293 default:
2294 unreachable("unhandle variable mode");
2295 }
2296 ret = ac_build_gather_values(&ctx->ac, values, ve);
2297 return LLVMBuildBitCast(ctx->builder, ret, get_def_type(ctx, &instr->dest.ssa), "");
2298 }
2299
2300 static void
2301 visit_store_var(struct nir_to_llvm_context *ctx,
2302 nir_intrinsic_instr *instr)
2303 {
2304 LLVMValueRef temp_ptr, value;
2305 int idx = instr->variables[0]->var->data.driver_location;
2306 LLVMValueRef src = to_float(ctx, get_src(ctx, instr->src[0]));
2307 int writemask = instr->const_index[0];
2308 LLVMValueRef indir_index;
2309 unsigned const_index;
2310 radv_get_deref_offset(ctx, &instr->variables[0]->deref, false,
2311 NULL, &const_index, &indir_index);
2312
2313 if (get_elem_bits(ctx, LLVMTypeOf(src)) == 64) {
2314 int old_writemask = writemask;
2315
2316 src = LLVMBuildBitCast(ctx->builder, src,
2317 LLVMVectorType(ctx->f32, get_llvm_num_components(src) * 2),
2318 "");
2319
2320 writemask = 0;
2321 for (unsigned chan = 0; chan < 4; chan++) {
2322 if (old_writemask & (1 << chan))
2323 writemask |= 3u << (2 * chan);
2324 }
2325 }
2326
2327 switch (instr->variables[0]->var->data.mode) {
2328 case nir_var_shader_out:
2329 for (unsigned chan = 0; chan < 8; chan++) {
2330 int stride = 4;
2331 if (!(writemask & (1 << chan)))
2332 continue;
2333
2334 value = llvm_extract_elem(ctx, src, chan);
2335
2336 if (instr->variables[0]->var->data.location == VARYING_SLOT_CLIP_DIST0 ||
2337 instr->variables[0]->var->data.location == VARYING_SLOT_CULL_DIST0)
2338 stride = 1;
2339 if (indir_index) {
2340 unsigned count = glsl_count_attribute_slots(
2341 instr->variables[0]->var->type, false);
2342 count -= chan / 4;
2343 LLVMValueRef tmp_vec = ac_build_gather_values_extended(
2344 &ctx->ac, ctx->outputs + idx + chan, count,
2345 stride, true);
2346
2347 if (get_llvm_num_components(tmp_vec) > 1) {
2348 tmp_vec = LLVMBuildInsertElement(ctx->builder, tmp_vec,
2349 value, indir_index, "");
2350 } else
2351 tmp_vec = value;
2352 build_store_values_extended(ctx, ctx->outputs + idx + chan,
2353 count, stride, tmp_vec);
2354
2355 } else {
2356 temp_ptr = ctx->outputs[idx + chan + const_index * stride];
2357
2358 LLVMBuildStore(ctx->builder, value, temp_ptr);
2359 }
2360 }
2361 break;
2362 case nir_var_local:
2363 for (unsigned chan = 0; chan < 8; chan++) {
2364 if (!(writemask & (1 << chan)))
2365 continue;
2366
2367 value = llvm_extract_elem(ctx, src, chan);
2368 if (indir_index) {
2369 unsigned count = glsl_count_attribute_slots(
2370 instr->variables[0]->var->type, false);
2371 count -= chan / 4;
2372 LLVMValueRef tmp_vec = ac_build_gather_values_extended(
2373 &ctx->ac, ctx->locals + idx + chan, count,
2374 4, true);
2375
2376 tmp_vec = LLVMBuildInsertElement(ctx->builder, tmp_vec,
2377 value, indir_index, "");
2378 build_store_values_extended(ctx, ctx->locals + idx + chan,
2379 count, 4, tmp_vec);
2380 } else {
2381 temp_ptr = ctx->locals[idx + chan + const_index * 4];
2382
2383 LLVMBuildStore(ctx->builder, value, temp_ptr);
2384 }
2385 }
2386 break;
2387 case nir_var_shared: {
2388 LLVMValueRef ptr = get_shared_memory_ptr(ctx, idx, ctx->i32);
2389
2390 if (indir_index)
2391 indir_index = LLVMBuildMul(ctx->builder, indir_index, LLVMConstInt(ctx->i32, 4, false), "");
2392
2393 for (unsigned chan = 0; chan < 8; chan++) {
2394 if (!(writemask & (1 << chan)))
2395 continue;
2396 LLVMValueRef index = LLVMConstInt(ctx->i32, chan, false);
2397 LLVMValueRef derived_ptr;
2398
2399 if (indir_index)
2400 index = LLVMBuildAdd(ctx->builder, index, indir_index, "");
2401
2402 value = llvm_extract_elem(ctx, src, chan);
2403 derived_ptr = LLVMBuildGEP(ctx->builder, ptr, &index, 1, "");
2404 LLVMBuildStore(ctx->builder,
2405 to_integer(ctx, value), derived_ptr);
2406 }
2407 break;
2408 }
2409 default:
2410 break;
2411 }
2412 }
2413
2414 static int image_type_to_components_count(enum glsl_sampler_dim dim, bool array)
2415 {
2416 switch (dim) {
2417 case GLSL_SAMPLER_DIM_BUF:
2418 return 1;
2419 case GLSL_SAMPLER_DIM_1D:
2420 return array ? 2 : 1;
2421 case GLSL_SAMPLER_DIM_2D:
2422 return array ? 3 : 2;
2423 case GLSL_SAMPLER_DIM_MS:
2424 return array ? 4 : 3;
2425 case GLSL_SAMPLER_DIM_3D:
2426 case GLSL_SAMPLER_DIM_CUBE:
2427 return 3;
2428 case GLSL_SAMPLER_DIM_RECT:
2429 case GLSL_SAMPLER_DIM_SUBPASS:
2430 return 2;
2431 case GLSL_SAMPLER_DIM_SUBPASS_MS:
2432 return 3;
2433 default:
2434 break;
2435 }
2436 return 0;
2437 }
2438
2439
2440
2441 /* Adjust the sample index according to FMASK.
2442 *
2443 * For uncompressed MSAA surfaces, FMASK should return 0x76543210,
2444 * which is the identity mapping. Each nibble says which physical sample
2445 * should be fetched to get that sample.
2446 *
2447 * For example, 0x11111100 means there are only 2 samples stored and
2448 * the second sample covers 3/4 of the pixel. When reading samples 0
2449 * and 1, return physical sample 0 (determined by the first two 0s
2450 * in FMASK), otherwise return physical sample 1.
2451 *
2452 * The sample index should be adjusted as follows:
2453 * sample_index = (fmask >> (sample_index * 4)) & 0xF;
2454 */
2455 static LLVMValueRef adjust_sample_index_using_fmask(struct nir_to_llvm_context *ctx,
2456 LLVMValueRef coord_x, LLVMValueRef coord_y,
2457 LLVMValueRef coord_z,
2458 LLVMValueRef sample_index,
2459 LLVMValueRef fmask_desc_ptr)
2460 {
2461 LLVMValueRef fmask_load_address[4];
2462 LLVMValueRef res;
2463
2464 fmask_load_address[0] = coord_x;
2465 fmask_load_address[1] = coord_y;
2466 if (coord_z) {
2467 fmask_load_address[2] = coord_z;
2468 fmask_load_address[3] = LLVMGetUndef(ctx->i32);
2469 }
2470
2471 struct ac_image_args args = {0};
2472
2473 args.opcode = ac_image_load;
2474 args.da = coord_z ? true : false;
2475 args.resource = fmask_desc_ptr;
2476 args.dmask = 0xf;
2477 args.addr = ac_build_gather_values(&ctx->ac, fmask_load_address, coord_z ? 4 : 2);
2478
2479 res = ac_build_image_opcode(&ctx->ac, &args);
2480
2481 res = to_integer(ctx, res);
2482 LLVMValueRef four = LLVMConstInt(ctx->i32, 4, false);
2483 LLVMValueRef F = LLVMConstInt(ctx->i32, 0xf, false);
2484
2485 LLVMValueRef fmask = LLVMBuildExtractElement(ctx->builder,
2486 res,
2487 ctx->i32zero, "");
2488
2489 LLVMValueRef sample_index4 =
2490 LLVMBuildMul(ctx->builder, sample_index, four, "");
2491 LLVMValueRef shifted_fmask =
2492 LLVMBuildLShr(ctx->builder, fmask, sample_index4, "");
2493 LLVMValueRef final_sample =
2494 LLVMBuildAnd(ctx->builder, shifted_fmask, F, "");
2495
2496 /* Don't rewrite the sample index if WORD1.DATA_FORMAT of the FMASK
2497 * resource descriptor is 0 (invalid),
2498 */
2499 LLVMValueRef fmask_desc =
2500 LLVMBuildBitCast(ctx->builder, fmask_desc_ptr,
2501 ctx->v8i32, "");
2502
2503 LLVMValueRef fmask_word1 =
2504 LLVMBuildExtractElement(ctx->builder, fmask_desc,
2505 ctx->i32one, "");
2506
2507 LLVMValueRef word1_is_nonzero =
2508 LLVMBuildICmp(ctx->builder, LLVMIntNE,
2509 fmask_word1, ctx->i32zero, "");
2510
2511 /* Replace the MSAA sample index. */
2512 sample_index =
2513 LLVMBuildSelect(ctx->builder, word1_is_nonzero,
2514 final_sample, sample_index, "");
2515 return sample_index;
2516 }
2517
2518 static LLVMValueRef get_image_coords(struct nir_to_llvm_context *ctx,
2519 nir_intrinsic_instr *instr)
2520 {
2521 const struct glsl_type *type = instr->variables[0]->var->type;
2522 if(instr->variables[0]->deref.child)
2523 type = instr->variables[0]->deref.child->type;
2524
2525 LLVMValueRef src0 = get_src(ctx, instr->src[0]);
2526 LLVMValueRef coords[4];
2527 LLVMValueRef masks[] = {
2528 LLVMConstInt(ctx->i32, 0, false), LLVMConstInt(ctx->i32, 1, false),
2529 LLVMConstInt(ctx->i32, 2, false), LLVMConstInt(ctx->i32, 3, false),
2530 };
2531 LLVMValueRef res;
2532 LLVMValueRef sample_index = llvm_extract_elem(ctx, get_src(ctx, instr->src[1]), 0);
2533
2534 int count;
2535 enum glsl_sampler_dim dim = glsl_get_sampler_dim(type);
2536 bool add_frag_pos = (dim == GLSL_SAMPLER_DIM_SUBPASS ||
2537 dim == GLSL_SAMPLER_DIM_SUBPASS_MS);
2538 bool is_ms = (dim == GLSL_SAMPLER_DIM_MS ||
2539 dim == GLSL_SAMPLER_DIM_SUBPASS_MS);
2540
2541 count = image_type_to_components_count(dim,
2542 glsl_sampler_type_is_array(type));
2543
2544 if (is_ms) {
2545 LLVMValueRef fmask_load_address[3];
2546 int chan;
2547
2548 fmask_load_address[0] = LLVMBuildExtractElement(ctx->builder, src0, masks[0], "");
2549 fmask_load_address[1] = LLVMBuildExtractElement(ctx->builder, src0, masks[1], "");
2550 if (glsl_sampler_type_is_array(type))
2551 fmask_load_address[2] = LLVMBuildExtractElement(ctx->builder, src0, masks[2], "");
2552 else
2553 fmask_load_address[2] = NULL;
2554 if (add_frag_pos) {
2555 for (chan = 0; chan < 2; ++chan)
2556 fmask_load_address[chan] = LLVMBuildAdd(ctx->builder, fmask_load_address[chan], LLVMBuildFPToUI(ctx->builder, ctx->frag_pos[chan], ctx->i32, ""), "");
2557 }
2558 sample_index = adjust_sample_index_using_fmask(ctx,
2559 fmask_load_address[0],
2560 fmask_load_address[1],
2561 fmask_load_address[2],
2562 sample_index,
2563 get_sampler_desc(ctx, instr->variables[0], DESC_FMASK));
2564 }
2565 if (count == 1) {
2566 if (instr->src[0].ssa->num_components)
2567 res = LLVMBuildExtractElement(ctx->builder, src0, masks[0], "");
2568 else
2569 res = src0;
2570 } else {
2571 int chan;
2572 if (is_ms)
2573 count--;
2574 for (chan = 0; chan < count; ++chan) {
2575 coords[chan] = LLVMBuildExtractElement(ctx->builder, src0, masks[chan], "");
2576 }
2577
2578 if (add_frag_pos) {
2579 for (chan = 0; chan < count; ++chan)
2580 coords[chan] = LLVMBuildAdd(ctx->builder, coords[chan], LLVMBuildFPToUI(ctx->builder, ctx->frag_pos[chan], ctx->i32, ""), "");
2581 }
2582 if (is_ms) {
2583 coords[count] = sample_index;
2584 count++;
2585 }
2586
2587 if (count == 3) {
2588 coords[3] = LLVMGetUndef(ctx->i32);
2589 count = 4;
2590 }
2591 res = ac_build_gather_values(&ctx->ac, coords, count);
2592 }
2593 return res;
2594 }
2595
2596 static LLVMValueRef visit_image_load(struct nir_to_llvm_context *ctx,
2597 nir_intrinsic_instr *instr)
2598 {
2599 LLVMValueRef params[7];
2600 LLVMValueRef res;
2601 char intrinsic_name[64];
2602 const nir_variable *var = instr->variables[0]->var;
2603 const struct glsl_type *type = var->type;
2604 if(instr->variables[0]->deref.child)
2605 type = instr->variables[0]->deref.child->type;
2606
2607 type = glsl_without_array(type);
2608 if (glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_BUF) {
2609 params[0] = get_sampler_desc(ctx, instr->variables[0], DESC_BUFFER);
2610 params[1] = LLVMBuildExtractElement(ctx->builder, get_src(ctx, instr->src[0]),
2611 LLVMConstInt(ctx->i32, 0, false), ""); /* vindex */
2612 params[2] = LLVMConstInt(ctx->i32, 0, false); /* voffset */
2613 params[3] = ctx->i1false; /* glc */
2614 params[4] = ctx->i1false; /* slc */
2615 res = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.buffer.load.format.v4f32", ctx->v4f32,
2616 params, 5, 0);
2617
2618 res = trim_vector(ctx, res, instr->dest.ssa.num_components);
2619 res = to_integer(ctx, res);
2620 } else {
2621 bool is_da = glsl_sampler_type_is_array(type) ||
2622 glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_CUBE;
2623 LLVMValueRef da = is_da ? ctx->i1true : ctx->i1false;
2624 LLVMValueRef glc = ctx->i1false;
2625 LLVMValueRef slc = ctx->i1false;
2626
2627 params[0] = get_image_coords(ctx, instr);
2628 params[1] = get_sampler_desc(ctx, instr->variables[0], DESC_IMAGE);
2629 params[2] = LLVMConstInt(ctx->i32, 15, false); /* dmask */
2630 if (HAVE_LLVM <= 0x0309) {
2631 params[3] = ctx->i1false; /* r128 */
2632 params[4] = da;
2633 params[5] = glc;
2634 params[6] = slc;
2635 } else {
2636 LLVMValueRef lwe = ctx->i1false;
2637 params[3] = glc;
2638 params[4] = slc;
2639 params[5] = lwe;
2640 params[6] = da;
2641 }
2642
2643 ac_get_image_intr_name("llvm.amdgcn.image.load",
2644 ctx->v4f32, /* vdata */
2645 LLVMTypeOf(params[0]), /* coords */
2646 LLVMTypeOf(params[1]), /* rsrc */
2647 intrinsic_name, sizeof(intrinsic_name));
2648
2649 res = ac_build_intrinsic(&ctx->ac, intrinsic_name, ctx->v4f32,
2650 params, 7, AC_FUNC_ATTR_READONLY);
2651 }
2652 return to_integer(ctx, res);
2653 }
2654
2655 static void visit_image_store(struct nir_to_llvm_context *ctx,
2656 nir_intrinsic_instr *instr)
2657 {
2658 LLVMValueRef params[8];
2659 char intrinsic_name[64];
2660 const nir_variable *var = instr->variables[0]->var;
2661 const struct glsl_type *type = glsl_without_array(var->type);
2662
2663 if (ctx->stage == MESA_SHADER_FRAGMENT)
2664 ctx->shader_info->fs.writes_memory = true;
2665
2666 if (glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_BUF) {
2667 params[0] = to_float(ctx, get_src(ctx, instr->src[2])); /* data */
2668 params[1] = get_sampler_desc(ctx, instr->variables[0], DESC_BUFFER);
2669 params[2] = LLVMBuildExtractElement(ctx->builder, get_src(ctx, instr->src[0]),
2670 LLVMConstInt(ctx->i32, 0, false), ""); /* vindex */
2671 params[3] = LLVMConstInt(ctx->i32, 0, false); /* voffset */
2672 params[4] = ctx->i1false; /* glc */
2673 params[5] = ctx->i1false; /* slc */
2674 ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.buffer.store.format.v4f32", ctx->voidt,
2675 params, 6, 0);
2676 } else {
2677 bool is_da = glsl_sampler_type_is_array(type) ||
2678 glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_CUBE;
2679 LLVMValueRef da = is_da ? ctx->i1true : ctx->i1false;
2680 LLVMValueRef glc = ctx->i1false;
2681 LLVMValueRef slc = ctx->i1false;
2682
2683 params[0] = to_float(ctx, get_src(ctx, instr->src[2]));
2684 params[1] = get_image_coords(ctx, instr); /* coords */
2685 params[2] = get_sampler_desc(ctx, instr->variables[0], DESC_IMAGE);
2686 params[3] = LLVMConstInt(ctx->i32, 15, false); /* dmask */
2687 if (HAVE_LLVM <= 0x0309) {
2688 params[4] = ctx->i1false; /* r128 */
2689 params[5] = da;
2690 params[6] = glc;
2691 params[7] = slc;
2692 } else {
2693 LLVMValueRef lwe = ctx->i1false;
2694 params[4] = glc;
2695 params[5] = slc;
2696 params[6] = lwe;
2697 params[7] = da;
2698 }
2699
2700 ac_get_image_intr_name("llvm.amdgcn.image.store",
2701 LLVMTypeOf(params[0]), /* vdata */
2702 LLVMTypeOf(params[1]), /* coords */
2703 LLVMTypeOf(params[2]), /* rsrc */
2704 intrinsic_name, sizeof(intrinsic_name));
2705
2706 ac_build_intrinsic(&ctx->ac, intrinsic_name, ctx->voidt,
2707 params, 8, 0);
2708 }
2709
2710 }
2711
2712 static LLVMValueRef visit_image_atomic(struct nir_to_llvm_context *ctx,
2713 nir_intrinsic_instr *instr)
2714 {
2715 LLVMValueRef params[6];
2716 int param_count = 0;
2717 const nir_variable *var = instr->variables[0]->var;
2718
2719 const char *base_name = "llvm.amdgcn.image.atomic";
2720 const char *atomic_name;
2721 LLVMValueRef coords;
2722 char intrinsic_name[32], coords_type[8];
2723 const struct glsl_type *type = glsl_without_array(var->type);
2724
2725 if (ctx->stage == MESA_SHADER_FRAGMENT)
2726 ctx->shader_info->fs.writes_memory = true;
2727
2728 params[param_count++] = get_src(ctx, instr->src[2]);
2729 if (instr->intrinsic == nir_intrinsic_image_atomic_comp_swap)
2730 params[param_count++] = get_src(ctx, instr->src[3]);
2731
2732 if (glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_BUF) {
2733 params[param_count++] = get_sampler_desc(ctx, instr->variables[0], DESC_BUFFER);
2734 coords = params[param_count++] = LLVMBuildExtractElement(ctx->builder, get_src(ctx, instr->src[0]),
2735 LLVMConstInt(ctx->i32, 0, false), ""); /* vindex */
2736 params[param_count++] = ctx->i32zero; /* voffset */
2737 params[param_count++] = ctx->i1false; /* glc */
2738 params[param_count++] = ctx->i1false; /* slc */
2739 } else {
2740 bool da = glsl_sampler_type_is_array(type) ||
2741 glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_CUBE;
2742
2743 coords = params[param_count++] = get_image_coords(ctx, instr);
2744 params[param_count++] = get_sampler_desc(ctx, instr->variables[0], DESC_IMAGE);
2745 params[param_count++] = ctx->i1false; /* r128 */
2746 params[param_count++] = da ? ctx->i1true : ctx->i1false; /* da */
2747 params[param_count++] = ctx->i1false; /* slc */
2748 }
2749
2750 switch (instr->intrinsic) {
2751 case nir_intrinsic_image_atomic_add:
2752 atomic_name = "add";
2753 break;
2754 case nir_intrinsic_image_atomic_min:
2755 atomic_name = "smin";
2756 break;
2757 case nir_intrinsic_image_atomic_max:
2758 atomic_name = "smax";
2759 break;
2760 case nir_intrinsic_image_atomic_and:
2761 atomic_name = "and";
2762 break;
2763 case nir_intrinsic_image_atomic_or:
2764 atomic_name = "or";
2765 break;
2766 case nir_intrinsic_image_atomic_xor:
2767 atomic_name = "xor";
2768 break;
2769 case nir_intrinsic_image_atomic_exchange:
2770 atomic_name = "swap";
2771 break;
2772 case nir_intrinsic_image_atomic_comp_swap:
2773 atomic_name = "cmpswap";
2774 break;
2775 default:
2776 abort();
2777 }
2778 build_int_type_name(LLVMTypeOf(coords),
2779 coords_type, sizeof(coords_type));
2780
2781 snprintf(intrinsic_name, sizeof(intrinsic_name),
2782 "%s.%s.%s", base_name, atomic_name, coords_type);
2783 return ac_build_intrinsic(&ctx->ac, intrinsic_name, ctx->i32, params, param_count, 0);
2784 }
2785
2786 static LLVMValueRef visit_image_size(struct nir_to_llvm_context *ctx,
2787 nir_intrinsic_instr *instr)
2788 {
2789 LLVMValueRef res;
2790 const nir_variable *var = instr->variables[0]->var;
2791 const struct glsl_type *type = instr->variables[0]->var->type;
2792 bool da = glsl_sampler_type_is_array(var->type) ||
2793 glsl_get_sampler_dim(var->type) == GLSL_SAMPLER_DIM_CUBE;
2794 if(instr->variables[0]->deref.child)
2795 type = instr->variables[0]->deref.child->type;
2796
2797 if (glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_BUF)
2798 return get_buffer_size(ctx, get_sampler_desc(ctx, instr->variables[0], DESC_BUFFER), true);
2799
2800 struct ac_image_args args = { 0 };
2801
2802 args.da = da;
2803 args.dmask = 0xf;
2804 args.resource = get_sampler_desc(ctx, instr->variables[0], DESC_IMAGE);
2805 args.opcode = ac_image_get_resinfo;
2806 args.addr = ctx->i32zero;
2807
2808 res = ac_build_image_opcode(&ctx->ac, &args);
2809
2810 if (glsl_get_sampler_dim(type) == GLSL_SAMPLER_DIM_CUBE &&
2811 glsl_sampler_type_is_array(type)) {
2812 LLVMValueRef two = LLVMConstInt(ctx->i32, 2, false);
2813 LLVMValueRef six = LLVMConstInt(ctx->i32, 6, false);
2814 LLVMValueRef z = LLVMBuildExtractElement(ctx->builder, res, two, "");
2815 z = LLVMBuildSDiv(ctx->builder, z, six, "");
2816 res = LLVMBuildInsertElement(ctx->builder, res, z, two, "");
2817 }
2818 return res;
2819 }
2820
2821 static void emit_waitcnt(struct nir_to_llvm_context *ctx)
2822 {
2823 LLVMValueRef args[1] = {
2824 LLVMConstInt(ctx->i32, 0xf70, false),
2825 };
2826 ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.s.waitcnt",
2827 ctx->voidt, args, 1, 0);
2828 }
2829
2830 static void emit_barrier(struct nir_to_llvm_context *ctx)
2831 {
2832 // TODO tess
2833 ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.s.barrier",
2834 ctx->voidt, NULL, 0, 0);
2835 }
2836
2837 static void emit_discard_if(struct nir_to_llvm_context *ctx,
2838 nir_intrinsic_instr *instr)
2839 {
2840 LLVMValueRef cond;
2841 ctx->shader_info->fs.can_discard = true;
2842
2843 cond = LLVMBuildICmp(ctx->builder, LLVMIntNE,
2844 get_src(ctx, instr->src[0]),
2845 ctx->i32zero, "");
2846
2847 cond = LLVMBuildSelect(ctx->builder, cond,
2848 LLVMConstReal(ctx->f32, -1.0f),
2849 ctx->f32zero, "");
2850 ac_build_kill(&ctx->ac, cond);
2851 }
2852
2853 static LLVMValueRef
2854 visit_load_local_invocation_index(struct nir_to_llvm_context *ctx)
2855 {
2856 LLVMValueRef result;
2857 LLVMValueRef thread_id = ac_get_thread_id(&ctx->ac);
2858 result = LLVMBuildAnd(ctx->builder, ctx->tg_size,
2859 LLVMConstInt(ctx->i32, 0xfc0, false), "");
2860
2861 return LLVMBuildAdd(ctx->builder, result, thread_id, "");
2862 }
2863
2864 static LLVMValueRef visit_var_atomic(struct nir_to_llvm_context *ctx,
2865 nir_intrinsic_instr *instr)
2866 {
2867 LLVMValueRef ptr, result;
2868 int idx = instr->variables[0]->var->data.driver_location;
2869 LLVMValueRef src = get_src(ctx, instr->src[0]);
2870 ptr = get_shared_memory_ptr(ctx, idx, ctx->i32);
2871
2872 if (instr->intrinsic == nir_intrinsic_var_atomic_comp_swap) {
2873 LLVMValueRef src1 = get_src(ctx, instr->src[1]);
2874 result = LLVMBuildAtomicCmpXchg(ctx->builder,
2875 ptr, src, src1,
2876 LLVMAtomicOrderingSequentiallyConsistent,
2877 LLVMAtomicOrderingSequentiallyConsistent,
2878 false);
2879 } else {
2880 LLVMAtomicRMWBinOp op;
2881 switch (instr->intrinsic) {
2882 case nir_intrinsic_var_atomic_add:
2883 op = LLVMAtomicRMWBinOpAdd;
2884 break;
2885 case nir_intrinsic_var_atomic_umin:
2886 op = LLVMAtomicRMWBinOpUMin;
2887 break;
2888 case nir_intrinsic_var_atomic_umax:
2889 op = LLVMAtomicRMWBinOpUMax;
2890 break;
2891 case nir_intrinsic_var_atomic_imin:
2892 op = LLVMAtomicRMWBinOpMin;
2893 break;
2894 case nir_intrinsic_var_atomic_imax:
2895 op = LLVMAtomicRMWBinOpMax;
2896 break;
2897 case nir_intrinsic_var_atomic_and:
2898 op = LLVMAtomicRMWBinOpAnd;
2899 break;
2900 case nir_intrinsic_var_atomic_or:
2901 op = LLVMAtomicRMWBinOpOr;
2902 break;
2903 case nir_intrinsic_var_atomic_xor:
2904 op = LLVMAtomicRMWBinOpXor;
2905 break;
2906 case nir_intrinsic_var_atomic_exchange:
2907 op = LLVMAtomicRMWBinOpXchg;
2908 break;
2909 default:
2910 return NULL;
2911 }
2912
2913 result = LLVMBuildAtomicRMW(ctx->builder, op, ptr, to_integer(ctx, src),
2914 LLVMAtomicOrderingSequentiallyConsistent,
2915 false);
2916 }
2917 return result;
2918 }
2919
2920 #define INTERP_CENTER 0
2921 #define INTERP_CENTROID 1
2922 #define INTERP_SAMPLE 2
2923
2924 static LLVMValueRef lookup_interp_param(struct nir_to_llvm_context *ctx,
2925 enum glsl_interp_mode interp, unsigned location)
2926 {
2927 switch (interp) {
2928 case INTERP_MODE_FLAT:
2929 default:
2930 return NULL;
2931 case INTERP_MODE_SMOOTH:
2932 case INTERP_MODE_NONE:
2933 if (location == INTERP_CENTER)
2934 return ctx->persp_center;
2935 else if (location == INTERP_CENTROID)
2936 return ctx->persp_centroid;
2937 else if (location == INTERP_SAMPLE)
2938 return ctx->persp_sample;
2939 break;
2940 case INTERP_MODE_NOPERSPECTIVE:
2941 if (location == INTERP_CENTER)
2942 return ctx->linear_center;
2943 else if (location == INTERP_CENTROID)
2944 return ctx->linear_centroid;
2945 else if (location == INTERP_SAMPLE)
2946 return ctx->linear_sample;
2947 break;
2948 }
2949 return NULL;
2950 }
2951
2952 static LLVMValueRef load_sample_position(struct nir_to_llvm_context *ctx,
2953 LLVMValueRef sample_id)
2954 {
2955 /* offset = sample_id * 8 (8 = 2 floats containing samplepos.xy) */
2956 LLVMValueRef offset0 = LLVMBuildMul(ctx->builder, sample_id, LLVMConstInt(ctx->i32, 8, false), "");
2957 LLVMValueRef offset1 = LLVMBuildAdd(ctx->builder, offset0, LLVMConstInt(ctx->i32, 4, false), "");
2958 LLVMValueRef result[2];
2959
2960 result[0] = ac_build_indexed_load_const(&ctx->ac, ctx->sample_positions, offset0);
2961 result[1] = ac_build_indexed_load_const(&ctx->ac, ctx->sample_positions, offset1);
2962
2963 return ac_build_gather_values(&ctx->ac, result, 2);
2964 }
2965
2966 static LLVMValueRef load_sample_pos(struct nir_to_llvm_context *ctx)
2967 {
2968 LLVMValueRef values[2];
2969
2970 values[0] = emit_ffract(ctx, ctx->frag_pos[0]);
2971 values[1] = emit_ffract(ctx, ctx->frag_pos[1]);
2972 return ac_build_gather_values(&ctx->ac, values, 2);
2973 }
2974
2975 static LLVMValueRef visit_interp(struct nir_to_llvm_context *ctx,
2976 nir_intrinsic_instr *instr)
2977 {
2978 LLVMValueRef result[2];
2979 LLVMValueRef interp_param, attr_number;
2980 unsigned location;
2981 unsigned chan;
2982 LLVMValueRef src_c0, src_c1;
2983 LLVMValueRef src0;
2984 int input_index = instr->variables[0]->var->data.location - VARYING_SLOT_VAR0;
2985 switch (instr->intrinsic) {
2986 case nir_intrinsic_interp_var_at_centroid:
2987 location = INTERP_CENTROID;
2988 break;
2989 case nir_intrinsic_interp_var_at_sample:
2990 location = INTERP_SAMPLE;
2991 src0 = get_src(ctx, instr->src[0]);
2992 break;
2993 case nir_intrinsic_interp_var_at_offset:
2994 location = INTERP_CENTER;
2995 src0 = get_src(ctx, instr->src[0]);
2996 default:
2997 break;
2998 }
2999
3000 if (instr->intrinsic == nir_intrinsic_interp_var_at_offset) {
3001 src_c0 = to_float(ctx, LLVMBuildExtractElement(ctx->builder, src0, ctx->i32zero, ""));
3002 src_c1 = to_float(ctx, LLVMBuildExtractElement(ctx->builder, src0, ctx->i32one, ""));
3003 } else if (instr->intrinsic == nir_intrinsic_interp_var_at_sample) {
3004 LLVMValueRef sample_position;
3005 LLVMValueRef halfval = LLVMConstReal(ctx->f32, 0.5f);
3006
3007 /* fetch sample ID */
3008 sample_position = load_sample_position(ctx, src0);
3009
3010 src_c0 = LLVMBuildExtractElement(ctx->builder, sample_position, ctx->i32zero, "");
3011 src_c0 = LLVMBuildFSub(ctx->builder, src_c0, halfval, "");
3012 src_c1 = LLVMBuildExtractElement(ctx->builder, sample_position, ctx->i32one, "");
3013 src_c1 = LLVMBuildFSub(ctx->builder, src_c1, halfval, "");
3014 }
3015 interp_param = lookup_interp_param(ctx, instr->variables[0]->var->data.interpolation, location);
3016 attr_number = LLVMConstInt(ctx->i32, input_index, false);
3017
3018 if (location == INTERP_SAMPLE || location == INTERP_CENTER) {
3019 LLVMValueRef ij_out[2];
3020 LLVMValueRef ddxy_out = emit_ddxy_interp(ctx, interp_param);
3021
3022 /*
3023 * take the I then J parameters, and the DDX/Y for it, and
3024 * calculate the IJ inputs for the interpolator.
3025 * temp1 = ddx * offset/sample.x + I;
3026 * interp_param.I = ddy * offset/sample.y + temp1;
3027 * temp1 = ddx * offset/sample.x + J;
3028 * interp_param.J = ddy * offset/sample.y + temp1;
3029 */
3030 for (unsigned i = 0; i < 2; i++) {
3031 LLVMValueRef ix_ll = LLVMConstInt(ctx->i32, i, false);
3032 LLVMValueRef iy_ll = LLVMConstInt(ctx->i32, i + 2, false);
3033 LLVMValueRef ddx_el = LLVMBuildExtractElement(ctx->builder,
3034 ddxy_out, ix_ll, "");
3035 LLVMValueRef ddy_el = LLVMBuildExtractElement(ctx->builder,
3036 ddxy_out, iy_ll, "");
3037 LLVMValueRef interp_el = LLVMBuildExtractElement(ctx->builder,
3038 interp_param, ix_ll, "");
3039 LLVMValueRef temp1, temp2;
3040
3041 interp_el = LLVMBuildBitCast(ctx->builder, interp_el,
3042 ctx->f32, "");
3043
3044 temp1 = LLVMBuildFMul(ctx->builder, ddx_el, src_c0, "");
3045 temp1 = LLVMBuildFAdd(ctx->builder, temp1, interp_el, "");
3046
3047 temp2 = LLVMBuildFMul(ctx->builder, ddy_el, src_c1, "");
3048 temp2 = LLVMBuildFAdd(ctx->builder, temp2, temp1, "");
3049
3050 ij_out[i] = LLVMBuildBitCast(ctx->builder,
3051 temp2, ctx->i32, "");
3052 }
3053 interp_param = ac_build_gather_values(&ctx->ac, ij_out, 2);
3054
3055 }
3056
3057 for (chan = 0; chan < 2; chan++) {
3058 LLVMValueRef llvm_chan = LLVMConstInt(ctx->i32, chan, false);
3059
3060 if (interp_param) {
3061 interp_param = LLVMBuildBitCast(ctx->builder,
3062 interp_param, LLVMVectorType(ctx->f32, 2), "");
3063 LLVMValueRef i = LLVMBuildExtractElement(
3064 ctx->builder, interp_param, ctx->i32zero, "");
3065 LLVMValueRef j = LLVMBuildExtractElement(
3066 ctx->builder, interp_param, ctx->i32one, "");
3067
3068 result[chan] = ac_build_fs_interp(&ctx->ac,
3069 llvm_chan, attr_number,
3070 ctx->prim_mask, i, j);
3071 } else {
3072 result[chan] = ac_build_fs_interp_mov(&ctx->ac,
3073 LLVMConstInt(ctx->i32, 2, false),
3074 llvm_chan, attr_number,
3075 ctx->prim_mask);
3076 }
3077 }
3078 return ac_build_gather_values(&ctx->ac, result, 2);
3079 }
3080
3081 static void
3082 visit_emit_vertex(struct nir_to_llvm_context *ctx,
3083 nir_intrinsic_instr *instr)
3084 {
3085 LLVMValueRef gs_next_vertex;
3086 LLVMValueRef can_emit, kill;
3087 int idx;
3088 int clip_cull_slot = -1;
3089 assert(instr->const_index[0] == 0);
3090 /* Write vertex attribute values to GSVS ring */
3091 gs_next_vertex = LLVMBuildLoad(ctx->builder,
3092 ctx->gs_next_vertex,
3093 "");
3094
3095 /* If this thread has already emitted the declared maximum number of
3096 * vertices, kill it: excessive vertex emissions are not supposed to
3097 * have any effect, and GS threads have no externally observable
3098 * effects other than emitting vertices.
3099 */
3100 can_emit = LLVMBuildICmp(ctx->builder, LLVMIntULT, gs_next_vertex,
3101 LLVMConstInt(ctx->i32, ctx->gs_max_out_vertices, false), "");
3102
3103 kill = LLVMBuildSelect(ctx->builder, can_emit,
3104 LLVMConstReal(ctx->f32, 1.0f),
3105 LLVMConstReal(ctx->f32, -1.0f), "");
3106 ac_build_kill(&ctx->ac, kill);
3107
3108 /* loop num outputs */
3109 idx = 0;
3110 for (unsigned i = 0; i < RADEON_LLVM_MAX_OUTPUTS; ++i) {
3111 LLVMValueRef *out_ptr = &ctx->outputs[i * 4];
3112 int length = 4;
3113 int start = 0;
3114 int slot = idx;
3115 int slot_inc = 1;
3116
3117 if (!(ctx->output_mask & (1ull << i)))
3118 continue;
3119
3120 if (i == VARYING_SLOT_CLIP_DIST1 ||
3121 i == VARYING_SLOT_CULL_DIST1)
3122 continue;
3123
3124 if (i == VARYING_SLOT_CLIP_DIST0 ||
3125 i == VARYING_SLOT_CULL_DIST0) {
3126 /* pack clip and cull into a single set of slots */
3127 if (clip_cull_slot == -1) {
3128 clip_cull_slot = idx;
3129 if (ctx->num_output_clips + ctx->num_output_culls > 4)
3130 slot_inc = 2;
3131 } else {
3132 slot = clip_cull_slot;
3133 slot_inc = 0;
3134 }
3135 if (i == VARYING_SLOT_CLIP_DIST0)
3136 length = ctx->num_output_clips;
3137 if (i == VARYING_SLOT_CULL_DIST0) {
3138 start = ctx->num_output_clips;
3139 length = ctx->num_output_culls;
3140 }
3141 }
3142 for (unsigned j = 0; j < length; j++) {
3143 LLVMValueRef out_val = LLVMBuildLoad(ctx->builder,
3144 out_ptr[j], "");
3145 LLVMValueRef voffset = LLVMConstInt(ctx->i32, (slot * 4 + j + start) * ctx->gs_max_out_vertices, false);
3146 voffset = LLVMBuildAdd(ctx->builder, voffset, gs_next_vertex, "");
3147 voffset = LLVMBuildMul(ctx->builder, voffset, LLVMConstInt(ctx->i32, 4, false), "");
3148
3149 out_val = LLVMBuildBitCast(ctx->builder, out_val, ctx->i32, "");
3150
3151 ac_build_buffer_store_dword(&ctx->ac, ctx->gsvs_ring,
3152 out_val, 1,
3153 voffset, ctx->gs2vs_offset, 0,
3154 1, 1, true, true);
3155 }
3156 idx += slot_inc;
3157 }
3158
3159 gs_next_vertex = LLVMBuildAdd(ctx->builder, gs_next_vertex,
3160 ctx->i32one, "");
3161 LLVMBuildStore(ctx->builder, gs_next_vertex, ctx->gs_next_vertex);
3162
3163 ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_OP_EMIT | AC_SENDMSG_GS | (0 << 8), ctx->gs_wave_id);
3164 }
3165
3166 static void
3167 visit_end_primitive(struct nir_to_llvm_context *ctx,
3168 nir_intrinsic_instr *instr)
3169 {
3170 ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_OP_CUT | AC_SENDMSG_GS | (0 << 8), ctx->gs_wave_id);
3171 }
3172
3173 static void visit_intrinsic(struct nir_to_llvm_context *ctx,
3174 nir_intrinsic_instr *instr)
3175 {
3176 LLVMValueRef result = NULL;
3177
3178 switch (instr->intrinsic) {
3179 case nir_intrinsic_load_work_group_id: {
3180 result = ctx->workgroup_ids;
3181 break;
3182 }
3183 case nir_intrinsic_load_base_vertex: {
3184 result = ctx->base_vertex;
3185 break;
3186 }
3187 case nir_intrinsic_load_vertex_id_zero_base: {
3188 result = ctx->vertex_id;
3189 break;
3190 }
3191 case nir_intrinsic_load_local_invocation_id: {
3192 result = ctx->local_invocation_ids;
3193 break;
3194 }
3195 case nir_intrinsic_load_base_instance:
3196 result = ctx->start_instance;
3197 break;
3198 case nir_intrinsic_load_draw_id:
3199 result = ctx->draw_index;
3200 break;
3201 case nir_intrinsic_load_invocation_id:
3202 result = ctx->gs_invocation_id;
3203 break;
3204 case nir_intrinsic_load_primitive_id:
3205 if (ctx->stage == MESA_SHADER_GEOMETRY)
3206 result = ctx->gs_prim_id;
3207 else
3208 fprintf(stderr, "Unknown primitive id intrinsic: %d", ctx->stage);
3209 break;
3210 case nir_intrinsic_load_sample_id:
3211 ctx->shader_info->fs.force_persample = true;
3212 result = unpack_param(ctx, ctx->ancillary, 8, 4);
3213 break;
3214 case nir_intrinsic_load_sample_pos:
3215 ctx->shader_info->fs.force_persample = true;
3216 result = load_sample_pos(ctx);
3217 break;
3218 case nir_intrinsic_load_sample_mask_in:
3219 result = ctx->sample_coverage;
3220 break;
3221 case nir_intrinsic_load_front_face:
3222 result = ctx->front_face;
3223 break;
3224 case nir_intrinsic_load_instance_id:
3225 result = ctx->instance_id;
3226 ctx->shader_info->vs.vgpr_comp_cnt = MAX2(3,
3227 ctx->shader_info->vs.vgpr_comp_cnt);
3228 break;
3229 case nir_intrinsic_load_num_work_groups:
3230 result = ctx->num_work_groups;
3231 break;
3232 case nir_intrinsic_load_local_invocation_index:
3233 result = visit_load_local_invocation_index(ctx);
3234 break;
3235 case nir_intrinsic_load_push_constant:
3236 result = visit_load_push_constant(ctx, instr);
3237 break;
3238 case nir_intrinsic_vulkan_resource_index:
3239 result = visit_vulkan_resource_index(ctx, instr);
3240 break;
3241 case nir_intrinsic_store_ssbo:
3242 visit_store_ssbo(ctx, instr);
3243 break;
3244 case nir_intrinsic_load_ssbo:
3245 result = visit_load_buffer(ctx, instr);
3246 break;
3247 case nir_intrinsic_ssbo_atomic_add:
3248 case nir_intrinsic_ssbo_atomic_imin:
3249 case nir_intrinsic_ssbo_atomic_umin:
3250 case nir_intrinsic_ssbo_atomic_imax:
3251 case nir_intrinsic_ssbo_atomic_umax:
3252 case nir_intrinsic_ssbo_atomic_and:
3253 case nir_intrinsic_ssbo_atomic_or:
3254 case nir_intrinsic_ssbo_atomic_xor:
3255 case nir_intrinsic_ssbo_atomic_exchange:
3256 case nir_intrinsic_ssbo_atomic_comp_swap:
3257 result = visit_atomic_ssbo(ctx, instr);
3258 break;
3259 case nir_intrinsic_load_ubo:
3260 result = visit_load_ubo_buffer(ctx, instr);
3261 break;
3262 case nir_intrinsic_get_buffer_size:
3263 result = visit_get_buffer_size(ctx, instr);
3264 break;
3265 case nir_intrinsic_load_var:
3266 result = visit_load_var(ctx, instr);
3267 break;
3268 case nir_intrinsic_store_var:
3269 visit_store_var(ctx, instr);
3270 break;
3271 case nir_intrinsic_image_load:
3272 result = visit_image_load(ctx, instr);
3273 break;
3274 case nir_intrinsic_image_store:
3275 visit_image_store(ctx, instr);
3276 break;
3277 case nir_intrinsic_image_atomic_add:
3278 case nir_intrinsic_image_atomic_min:
3279 case nir_intrinsic_image_atomic_max:
3280 case nir_intrinsic_image_atomic_and:
3281 case nir_intrinsic_image_atomic_or:
3282 case nir_intrinsic_image_atomic_xor:
3283 case nir_intrinsic_image_atomic_exchange:
3284 case nir_intrinsic_image_atomic_comp_swap:
3285 result = visit_image_atomic(ctx, instr);
3286 break;
3287 case nir_intrinsic_image_size:
3288 result = visit_image_size(ctx, instr);
3289 break;
3290 case nir_intrinsic_discard:
3291 ctx->shader_info->fs.can_discard = true;
3292 ac_build_intrinsic(&ctx->ac, "llvm.AMDGPU.kilp",
3293 ctx->voidt,
3294 NULL, 0, AC_FUNC_ATTR_LEGACY);
3295 break;
3296 case nir_intrinsic_discard_if:
3297 emit_discard_if(ctx, instr);
3298 break;
3299 case nir_intrinsic_memory_barrier:
3300 emit_waitcnt(ctx);
3301 break;
3302 case nir_intrinsic_barrier:
3303 emit_barrier(ctx);
3304 break;
3305 case nir_intrinsic_var_atomic_add:
3306 case nir_intrinsic_var_atomic_imin:
3307 case nir_intrinsic_var_atomic_umin:
3308 case nir_intrinsic_var_atomic_imax:
3309 case nir_intrinsic_var_atomic_umax:
3310 case nir_intrinsic_var_atomic_and:
3311 case nir_intrinsic_var_atomic_or:
3312 case nir_intrinsic_var_atomic_xor:
3313 case nir_intrinsic_var_atomic_exchange:
3314 case nir_intrinsic_var_atomic_comp_swap:
3315 result = visit_var_atomic(ctx, instr);
3316 break;
3317 case nir_intrinsic_interp_var_at_centroid:
3318 case nir_intrinsic_interp_var_at_sample:
3319 case nir_intrinsic_interp_var_at_offset:
3320 result = visit_interp(ctx, instr);
3321 break;
3322 case nir_intrinsic_emit_vertex:
3323 visit_emit_vertex(ctx, instr);
3324 break;
3325 case nir_intrinsic_end_primitive:
3326 visit_end_primitive(ctx, instr);
3327 break;
3328 default:
3329 fprintf(stderr, "Unknown intrinsic: ");
3330 nir_print_instr(&instr->instr, stderr);
3331 fprintf(stderr, "\n");
3332 break;
3333 }
3334 if (result) {
3335 _mesa_hash_table_insert(ctx->defs, &instr->dest.ssa, result);
3336 }
3337 }
3338
3339 static LLVMValueRef get_sampler_desc(struct nir_to_llvm_context *ctx,
3340 nir_deref_var *deref,
3341 enum desc_type desc_type)
3342 {
3343 unsigned desc_set = deref->var->data.descriptor_set;
3344 LLVMValueRef list = ctx->descriptor_sets[desc_set];
3345 struct radv_descriptor_set_layout *layout = ctx->options->layout->set[desc_set].layout;
3346 struct radv_descriptor_set_binding_layout *binding = layout->binding + deref->var->data.binding;
3347 unsigned offset = binding->offset;
3348 unsigned stride = binding->size;
3349 unsigned type_size;
3350 LLVMBuilderRef builder = ctx->builder;
3351 LLVMTypeRef type;
3352 LLVMValueRef index = NULL;
3353 unsigned constant_index = 0;
3354
3355 assert(deref->var->data.binding < layout->binding_count);
3356
3357 switch (desc_type) {
3358 case DESC_IMAGE:
3359 type = ctx->v8i32;
3360 type_size = 32;
3361 break;
3362 case DESC_FMASK:
3363 type = ctx->v8i32;
3364 offset += 32;
3365 type_size = 32;
3366 break;
3367 case DESC_SAMPLER:
3368 type = ctx->v4i32;
3369 if (binding->type == VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER)
3370 offset += 64;
3371
3372 type_size = 16;
3373 break;
3374 case DESC_BUFFER:
3375 type = ctx->v4i32;
3376 type_size = 16;
3377 break;
3378 default:
3379 unreachable("invalid desc_type\n");
3380 }
3381
3382 if (deref->deref.child) {
3383 nir_deref_array *child = (nir_deref_array*)deref->deref.child;
3384
3385 assert(child->deref_array_type != nir_deref_array_type_wildcard);
3386 offset += child->base_offset * stride;
3387 if (child->deref_array_type == nir_deref_array_type_indirect) {
3388 index = get_src(ctx, child->indirect);
3389 }
3390
3391 constant_index = child->base_offset;
3392 }
3393 if (desc_type == DESC_SAMPLER && binding->immutable_samplers &&
3394 (!index || binding->immutable_samplers_equal)) {
3395 if (binding->immutable_samplers_equal)
3396 constant_index = 0;
3397
3398 LLVMValueRef constants[] = {
3399 LLVMConstInt(ctx->i32, binding->immutable_samplers[constant_index * 4 + 0], 0),
3400 LLVMConstInt(ctx->i32, binding->immutable_samplers[constant_index * 4 + 1], 0),
3401 LLVMConstInt(ctx->i32, binding->immutable_samplers[constant_index * 4 + 2], 0),
3402 LLVMConstInt(ctx->i32, binding->immutable_samplers[constant_index * 4 + 3], 0),
3403 };
3404 return ac_build_gather_values(&ctx->ac, constants, 4);
3405 }
3406
3407 assert(stride % type_size == 0);
3408
3409 if (!index)
3410 index = ctx->i32zero;
3411
3412 index = LLVMBuildMul(builder, index, LLVMConstInt(ctx->i32, stride / type_size, 0), "");
3413
3414 list = ac_build_gep0(&ctx->ac, list, LLVMConstInt(ctx->i32, offset, 0));
3415 list = LLVMBuildPointerCast(builder, list, const_array(type, 0), "");
3416
3417 return ac_build_indexed_load_const(&ctx->ac, list, index);
3418 }
3419
3420 static void set_tex_fetch_args(struct nir_to_llvm_context *ctx,
3421 struct ac_image_args *args,
3422 nir_tex_instr *instr,
3423 nir_texop op,
3424 LLVMValueRef res_ptr, LLVMValueRef samp_ptr,
3425 LLVMValueRef *param, unsigned count,
3426 unsigned dmask)
3427 {
3428 unsigned is_rect = 0;
3429 bool da = instr->is_array || instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE;
3430
3431 if (op == nir_texop_lod)
3432 da = false;
3433 /* Pad to power of two vector */
3434 while (count < util_next_power_of_two(count))
3435 param[count++] = LLVMGetUndef(ctx->i32);
3436
3437 if (count > 1)
3438 args->addr = ac_build_gather_values(&ctx->ac, param, count);
3439 else
3440 args->addr = param[0];
3441
3442 args->resource = res_ptr;
3443 args->sampler = samp_ptr;
3444
3445 if (instr->sampler_dim == GLSL_SAMPLER_DIM_BUF && op == nir_texop_txf) {
3446 args->addr = param[0];
3447 return;
3448 }
3449
3450 args->dmask = dmask;
3451 args->unorm = is_rect;
3452 args->da = da;
3453 }
3454
3455 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
3456 *
3457 * SI-CI:
3458 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
3459 * filtering manually. The driver sets img7 to a mask clearing
3460 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
3461 * s_and_b32 samp0, samp0, img7
3462 *
3463 * VI:
3464 * The ANISO_OVERRIDE sampler field enables this fix in TA.
3465 */
3466 static LLVMValueRef sici_fix_sampler_aniso(struct nir_to_llvm_context *ctx,
3467 LLVMValueRef res, LLVMValueRef samp)
3468 {
3469 LLVMBuilderRef builder = ctx->builder;
3470 LLVMValueRef img7, samp0;
3471
3472 if (ctx->options->chip_class >= VI)
3473 return samp;
3474
3475 img7 = LLVMBuildExtractElement(builder, res,
3476 LLVMConstInt(ctx->i32, 7, 0), "");
3477 samp0 = LLVMBuildExtractElement(builder, samp,
3478 LLVMConstInt(ctx->i32, 0, 0), "");
3479 samp0 = LLVMBuildAnd(builder, samp0, img7, "");
3480 return LLVMBuildInsertElement(builder, samp, samp0,
3481 LLVMConstInt(ctx->i32, 0, 0), "");
3482 }
3483
3484 static void tex_fetch_ptrs(struct nir_to_llvm_context *ctx,
3485 nir_tex_instr *instr,
3486 LLVMValueRef *res_ptr, LLVMValueRef *samp_ptr,
3487 LLVMValueRef *fmask_ptr)
3488 {
3489 if (instr->sampler_dim == GLSL_SAMPLER_DIM_BUF)
3490 *res_ptr = get_sampler_desc(ctx, instr->texture, DESC_BUFFER);
3491 else
3492 *res_ptr = get_sampler_desc(ctx, instr->texture, DESC_IMAGE);
3493 if (samp_ptr) {
3494 if (instr->sampler)
3495 *samp_ptr = get_sampler_desc(ctx, instr->sampler, DESC_SAMPLER);
3496 else
3497 *samp_ptr = get_sampler_desc(ctx, instr->texture, DESC_SAMPLER);
3498 if (instr->sampler_dim < GLSL_SAMPLER_DIM_RECT)
3499 *samp_ptr = sici_fix_sampler_aniso(ctx, *res_ptr, *samp_ptr);
3500 }
3501 if (fmask_ptr && !instr->sampler && (instr->op == nir_texop_txf_ms ||
3502 instr->op == nir_texop_samples_identical))
3503 *fmask_ptr = get_sampler_desc(ctx, instr->texture, DESC_FMASK);
3504 }
3505
3506 static LLVMValueRef apply_round_slice(struct nir_to_llvm_context *ctx,
3507 LLVMValueRef coord)
3508 {
3509 coord = to_float(ctx, coord);
3510 coord = ac_build_intrinsic(&ctx->ac, "llvm.rint.f32", ctx->f32, &coord, 1, 0);
3511 coord = to_integer(ctx, coord);
3512 return coord;
3513 }
3514
3515 static void visit_tex(struct nir_to_llvm_context *ctx, nir_tex_instr *instr)
3516 {
3517 LLVMValueRef result = NULL;
3518 struct ac_image_args args = { 0 };
3519 unsigned dmask = 0xf;
3520 LLVMValueRef address[16];
3521 LLVMValueRef coords[5];
3522 LLVMValueRef coord = NULL, lod = NULL, comparator = NULL;
3523 LLVMValueRef bias = NULL, offsets = NULL;
3524 LLVMValueRef res_ptr, samp_ptr, fmask_ptr = NULL, sample_index = NULL;
3525 LLVMValueRef ddx = NULL, ddy = NULL;
3526 LLVMValueRef derivs[6];
3527 unsigned chan, count = 0;
3528 unsigned const_src = 0, num_deriv_comp = 0;
3529
3530 tex_fetch_ptrs(ctx, instr, &res_ptr, &samp_ptr, &fmask_ptr);
3531
3532 for (unsigned i = 0; i < instr->num_srcs; i++) {
3533 switch (instr->src[i].src_type) {
3534 case nir_tex_src_coord:
3535 coord = get_src(ctx, instr->src[i].src);
3536 break;
3537 case nir_tex_src_projector:
3538 break;
3539 case nir_tex_src_comparator:
3540 comparator = get_src(ctx, instr->src[i].src);
3541 break;
3542 case nir_tex_src_offset:
3543 offsets = get_src(ctx, instr->src[i].src);
3544 const_src = i;
3545 break;
3546 case nir_tex_src_bias:
3547 bias = get_src(ctx, instr->src[i].src);
3548 break;
3549 case nir_tex_src_lod:
3550 lod = get_src(ctx, instr->src[i].src);
3551 break;
3552 case nir_tex_src_ms_index:
3553 sample_index = get_src(ctx, instr->src[i].src);
3554 break;
3555 case nir_tex_src_ms_mcs:
3556 break;
3557 case nir_tex_src_ddx:
3558 ddx = get_src(ctx, instr->src[i].src);
3559 num_deriv_comp = instr->src[i].src.ssa->num_components;
3560 break;
3561 case nir_tex_src_ddy:
3562 ddy = get_src(ctx, instr->src[i].src);
3563 break;
3564 case nir_tex_src_texture_offset:
3565 case nir_tex_src_sampler_offset:
3566 case nir_tex_src_plane:
3567 default:
3568 break;
3569 }
3570 }
3571
3572 if (instr->op == nir_texop_txs && instr->sampler_dim == GLSL_SAMPLER_DIM_BUF) {
3573 result = get_buffer_size(ctx, res_ptr, true);
3574 goto write_result;
3575 }
3576
3577 if (instr->op == nir_texop_texture_samples) {
3578 LLVMValueRef res, samples, is_msaa;
3579 res = LLVMBuildBitCast(ctx->builder, res_ptr, ctx->v8i32, "");
3580 samples = LLVMBuildExtractElement(ctx->builder, res,
3581 LLVMConstInt(ctx->i32, 3, false), "");
3582 is_msaa = LLVMBuildLShr(ctx->builder, samples,
3583 LLVMConstInt(ctx->i32, 28, false), "");
3584 is_msaa = LLVMBuildAnd(ctx->builder, is_msaa,
3585 LLVMConstInt(ctx->i32, 0xe, false), "");
3586 is_msaa = LLVMBuildICmp(ctx->builder, LLVMIntEQ, is_msaa,
3587 LLVMConstInt(ctx->i32, 0xe, false), "");
3588
3589 samples = LLVMBuildLShr(ctx->builder, samples,
3590 LLVMConstInt(ctx->i32, 16, false), "");
3591 samples = LLVMBuildAnd(ctx->builder, samples,
3592 LLVMConstInt(ctx->i32, 0xf, false), "");
3593 samples = LLVMBuildShl(ctx->builder, ctx->i32one,
3594 samples, "");
3595 samples = LLVMBuildSelect(ctx->builder, is_msaa, samples,
3596 ctx->i32one, "");
3597 result = samples;
3598 goto write_result;
3599 }
3600
3601 if (coord)
3602 for (chan = 0; chan < instr->coord_components; chan++)
3603 coords[chan] = llvm_extract_elem(ctx, coord, chan);
3604
3605 if (offsets && instr->op != nir_texop_txf) {
3606 LLVMValueRef offset[3], pack;
3607 for (chan = 0; chan < 3; ++chan)
3608 offset[chan] = ctx->i32zero;
3609
3610 args.offset = true;
3611 for (chan = 0; chan < get_llvm_num_components(offsets); chan++) {
3612 offset[chan] = llvm_extract_elem(ctx, offsets, chan);
3613 offset[chan] = LLVMBuildAnd(ctx->builder, offset[chan],
3614 LLVMConstInt(ctx->i32, 0x3f, false), "");
3615 if (chan)
3616 offset[chan] = LLVMBuildShl(ctx->builder, offset[chan],
3617 LLVMConstInt(ctx->i32, chan * 8, false), "");
3618 }
3619 pack = LLVMBuildOr(ctx->builder, offset[0], offset[1], "");
3620 pack = LLVMBuildOr(ctx->builder, pack, offset[2], "");
3621 address[count++] = pack;
3622
3623 }
3624 /* pack LOD bias value */
3625 if (instr->op == nir_texop_txb && bias) {
3626 address[count++] = bias;
3627 }
3628
3629 /* Pack depth comparison value */
3630 if (instr->is_shadow && comparator) {
3631 address[count++] = llvm_extract_elem(ctx, comparator, 0);
3632 }
3633
3634 /* pack derivatives */
3635 if (ddx || ddy) {
3636 switch (instr->sampler_dim) {
3637 case GLSL_SAMPLER_DIM_3D:
3638 case GLSL_SAMPLER_DIM_CUBE:
3639 num_deriv_comp = 3;
3640 break;
3641 case GLSL_SAMPLER_DIM_2D:
3642 default:
3643 num_deriv_comp = 2;
3644 break;
3645 case GLSL_SAMPLER_DIM_1D:
3646 num_deriv_comp = 1;
3647 break;
3648 }
3649
3650 for (unsigned i = 0; i < num_deriv_comp; i++) {
3651 derivs[i * 2] = to_float(ctx, llvm_extract_elem(ctx, ddx, i));
3652 derivs[i * 2 + 1] = to_float(ctx, llvm_extract_elem(ctx, ddy, i));
3653 }
3654 }
3655
3656 if (instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE && coord) {
3657 for (chan = 0; chan < instr->coord_components; chan++)
3658 coords[chan] = to_float(ctx, coords[chan]);
3659 if (instr->coord_components == 3)
3660 coords[3] = LLVMGetUndef(ctx->f32);
3661 ac_prepare_cube_coords(&ctx->ac,
3662 instr->op == nir_texop_txd, instr->is_array,
3663 coords, derivs);
3664 if (num_deriv_comp)
3665 num_deriv_comp--;
3666 }
3667
3668 if (ddx || ddy) {
3669 for (unsigned i = 0; i < num_deriv_comp * 2; i++)
3670 address[count++] = derivs[i];
3671 }
3672
3673 /* Pack texture coordinates */
3674 if (coord) {
3675 address[count++] = coords[0];
3676 if (instr->coord_components > 1) {
3677 if (instr->sampler_dim == GLSL_SAMPLER_DIM_1D && instr->is_array && instr->op != nir_texop_txf) {
3678 coords[1] = apply_round_slice(ctx, coords[1]);
3679 }
3680 address[count++] = coords[1];
3681 }
3682 if (instr->coord_components > 2) {
3683 /* This seems like a bit of a hack - but it passes Vulkan CTS with it */
3684 if (instr->sampler_dim != GLSL_SAMPLER_DIM_3D && instr->op != nir_texop_txf) {
3685 coords[2] = apply_round_slice(ctx, coords[2]);
3686 }
3687 address[count++] = coords[2];
3688 }
3689 }
3690
3691 /* Pack LOD */
3692 if ((instr->op == nir_texop_txl || instr->op == nir_texop_txf) && lod) {
3693 address[count++] = lod;
3694 } else if (instr->op == nir_texop_txf_ms && sample_index) {
3695 address[count++] = sample_index;
3696 } else if(instr->op == nir_texop_txs) {
3697 count = 0;
3698 if (lod)
3699 address[count++] = lod;
3700 else
3701 address[count++] = ctx->i32zero;
3702 }
3703
3704 for (chan = 0; chan < count; chan++) {
3705 address[chan] = LLVMBuildBitCast(ctx->builder,
3706 address[chan], ctx->i32, "");
3707 }
3708
3709 if (instr->op == nir_texop_samples_identical) {
3710 LLVMValueRef txf_address[4];
3711 struct ac_image_args txf_args = { 0 };
3712 unsigned txf_count = count;
3713 memcpy(txf_address, address, sizeof(txf_address));
3714
3715 if (!instr->is_array)
3716 txf_address[2] = ctx->i32zero;
3717 txf_address[3] = ctx->i32zero;
3718
3719 set_tex_fetch_args(ctx, &txf_args, instr, nir_texop_txf,
3720 fmask_ptr, NULL,
3721 txf_address, txf_count, 0xf);
3722
3723 result = build_tex_intrinsic(ctx, instr, &txf_args);
3724
3725 result = LLVMBuildExtractElement(ctx->builder, result, ctx->i32zero, "");
3726 result = emit_int_cmp(ctx, LLVMIntEQ, result, ctx->i32zero);
3727 goto write_result;
3728 }
3729
3730 if (instr->sampler_dim == GLSL_SAMPLER_DIM_MS &&
3731 instr->op != nir_texop_txs) {
3732 unsigned sample_chan = instr->is_array ? 3 : 2;
3733 address[sample_chan] = adjust_sample_index_using_fmask(ctx,
3734 address[0],
3735 address[1],
3736 instr->is_array ? address[2] : NULL,
3737 address[sample_chan],
3738 fmask_ptr);
3739 }
3740
3741 if (offsets && instr->op == nir_texop_txf) {
3742 nir_const_value *const_offset =
3743 nir_src_as_const_value(instr->src[const_src].src);
3744 int num_offsets = instr->src[const_src].src.ssa->num_components;
3745 assert(const_offset);
3746 num_offsets = MIN2(num_offsets, instr->coord_components);
3747 if (num_offsets > 2)
3748 address[2] = LLVMBuildAdd(ctx->builder,
3749 address[2], LLVMConstInt(ctx->i32, const_offset->i32[2], false), "");
3750 if (num_offsets > 1)
3751 address[1] = LLVMBuildAdd(ctx->builder,
3752 address[1], LLVMConstInt(ctx->i32, const_offset->i32[1], false), "");
3753 address[0] = LLVMBuildAdd(ctx->builder,
3754 address[0], LLVMConstInt(ctx->i32, const_offset->i32[0], false), "");
3755
3756 }
3757
3758 /* TODO TG4 support */
3759 if (instr->op == nir_texop_tg4) {
3760 if (instr->is_shadow)
3761 dmask = 1;
3762 else
3763 dmask = 1 << instr->component;
3764 }
3765 set_tex_fetch_args(ctx, &args, instr, instr->op,
3766 res_ptr, samp_ptr, address, count, dmask);
3767
3768 result = build_tex_intrinsic(ctx, instr, &args);
3769
3770 if (instr->op == nir_texop_query_levels)
3771 result = LLVMBuildExtractElement(ctx->builder, result, LLVMConstInt(ctx->i32, 3, false), "");
3772 else if (instr->is_shadow && instr->op != nir_texop_txs && instr->op != nir_texop_lod && instr->op != nir_texop_tg4)
3773 result = LLVMBuildExtractElement(ctx->builder, result, ctx->i32zero, "");
3774 else if (instr->op == nir_texop_txs &&
3775 instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE &&
3776 instr->is_array) {
3777 LLVMValueRef two = LLVMConstInt(ctx->i32, 2, false);
3778 LLVMValueRef six = LLVMConstInt(ctx->i32, 6, false);
3779 LLVMValueRef z = LLVMBuildExtractElement(ctx->builder, result, two, "");
3780 z = LLVMBuildSDiv(ctx->builder, z, six, "");
3781 result = LLVMBuildInsertElement(ctx->builder, result, z, two, "");
3782 } else if (instr->dest.ssa.num_components != 4)
3783 result = trim_vector(ctx, result, instr->dest.ssa.num_components);
3784
3785 write_result:
3786 if (result) {
3787 assert(instr->dest.is_ssa);
3788 result = to_integer(ctx, result);
3789 _mesa_hash_table_insert(ctx->defs, &instr->dest.ssa, result);
3790 }
3791 }
3792
3793
3794 static void visit_phi(struct nir_to_llvm_context *ctx, nir_phi_instr *instr)
3795 {
3796 LLVMTypeRef type = get_def_type(ctx, &instr->dest.ssa);
3797 LLVMValueRef result = LLVMBuildPhi(ctx->builder, type, "");
3798
3799 _mesa_hash_table_insert(ctx->defs, &instr->dest.ssa, result);
3800 _mesa_hash_table_insert(ctx->phis, instr, result);
3801 }
3802
3803 static void visit_post_phi(struct nir_to_llvm_context *ctx,
3804 nir_phi_instr *instr,
3805 LLVMValueRef llvm_phi)
3806 {
3807 nir_foreach_phi_src(src, instr) {
3808 LLVMBasicBlockRef block = get_block(ctx, src->pred);
3809 LLVMValueRef llvm_src = get_src(ctx, src->src);
3810
3811 LLVMAddIncoming(llvm_phi, &llvm_src, &block, 1);
3812 }
3813 }
3814
3815 static void phi_post_pass(struct nir_to_llvm_context *ctx)
3816 {
3817 struct hash_entry *entry;
3818 hash_table_foreach(ctx->phis, entry) {
3819 visit_post_phi(ctx, (nir_phi_instr*)entry->key,
3820 (LLVMValueRef)entry->data);
3821 }
3822 }
3823
3824
3825 static void visit_ssa_undef(struct nir_to_llvm_context *ctx,
3826 nir_ssa_undef_instr *instr)
3827 {
3828 unsigned num_components = instr->def.num_components;
3829 LLVMValueRef undef;
3830
3831 if (num_components == 1)
3832 undef = LLVMGetUndef(ctx->i32);
3833 else {
3834 undef = LLVMGetUndef(LLVMVectorType(ctx->i32, num_components));
3835 }
3836 _mesa_hash_table_insert(ctx->defs, &instr->def, undef);
3837 }
3838
3839 static void visit_jump(struct nir_to_llvm_context *ctx,
3840 nir_jump_instr *instr)
3841 {
3842 switch (instr->type) {
3843 case nir_jump_break:
3844 LLVMBuildBr(ctx->builder, ctx->break_block);
3845 LLVMClearInsertionPosition(ctx->builder);
3846 break;
3847 case nir_jump_continue:
3848 LLVMBuildBr(ctx->builder, ctx->continue_block);
3849 LLVMClearInsertionPosition(ctx->builder);
3850 break;
3851 default:
3852 fprintf(stderr, "Unknown NIR jump instr: ");
3853 nir_print_instr(&instr->instr, stderr);
3854 fprintf(stderr, "\n");
3855 abort();
3856 }
3857 }
3858
3859 static void visit_cf_list(struct nir_to_llvm_context *ctx,
3860 struct exec_list *list);
3861
3862 static void visit_block(struct nir_to_llvm_context *ctx, nir_block *block)
3863 {
3864 LLVMBasicBlockRef llvm_block = LLVMGetInsertBlock(ctx->builder);
3865 nir_foreach_instr(instr, block)
3866 {
3867 switch (instr->type) {
3868 case nir_instr_type_alu:
3869 visit_alu(ctx, nir_instr_as_alu(instr));
3870 break;
3871 case nir_instr_type_load_const:
3872 visit_load_const(ctx, nir_instr_as_load_const(instr));
3873 break;
3874 case nir_instr_type_intrinsic:
3875 visit_intrinsic(ctx, nir_instr_as_intrinsic(instr));
3876 break;
3877 case nir_instr_type_tex:
3878 visit_tex(ctx, nir_instr_as_tex(instr));
3879 break;
3880 case nir_instr_type_phi:
3881 visit_phi(ctx, nir_instr_as_phi(instr));
3882 break;
3883 case nir_instr_type_ssa_undef:
3884 visit_ssa_undef(ctx, nir_instr_as_ssa_undef(instr));
3885 break;
3886 case nir_instr_type_jump:
3887 visit_jump(ctx, nir_instr_as_jump(instr));
3888 break;
3889 default:
3890 fprintf(stderr, "Unknown NIR instr type: ");
3891 nir_print_instr(instr, stderr);
3892 fprintf(stderr, "\n");
3893 abort();
3894 }
3895 }
3896
3897 _mesa_hash_table_insert(ctx->defs, block, llvm_block);
3898 }
3899
3900 static void visit_if(struct nir_to_llvm_context *ctx, nir_if *if_stmt)
3901 {
3902 LLVMValueRef value = get_src(ctx, if_stmt->condition);
3903
3904 LLVMBasicBlockRef merge_block =
3905 LLVMAppendBasicBlockInContext(ctx->context, ctx->main_function, "");
3906 LLVMBasicBlockRef if_block =
3907 LLVMAppendBasicBlockInContext(ctx->context, ctx->main_function, "");
3908 LLVMBasicBlockRef else_block = merge_block;
3909 if (!exec_list_is_empty(&if_stmt->else_list))
3910 else_block = LLVMAppendBasicBlockInContext(
3911 ctx->context, ctx->main_function, "");
3912
3913 LLVMValueRef cond = LLVMBuildICmp(ctx->builder, LLVMIntNE, value,
3914 LLVMConstInt(ctx->i32, 0, false), "");
3915 LLVMBuildCondBr(ctx->builder, cond, if_block, else_block);
3916
3917 LLVMPositionBuilderAtEnd(ctx->builder, if_block);
3918 visit_cf_list(ctx, &if_stmt->then_list);
3919 if (LLVMGetInsertBlock(ctx->builder))
3920 LLVMBuildBr(ctx->builder, merge_block);
3921
3922 if (!exec_list_is_empty(&if_stmt->else_list)) {
3923 LLVMPositionBuilderAtEnd(ctx->builder, else_block);
3924 visit_cf_list(ctx, &if_stmt->else_list);
3925 if (LLVMGetInsertBlock(ctx->builder))
3926 LLVMBuildBr(ctx->builder, merge_block);
3927 }
3928
3929 LLVMPositionBuilderAtEnd(ctx->builder, merge_block);
3930 }
3931
3932 static void visit_loop(struct nir_to_llvm_context *ctx, nir_loop *loop)
3933 {
3934 LLVMBasicBlockRef continue_parent = ctx->continue_block;
3935 LLVMBasicBlockRef break_parent = ctx->break_block;
3936
3937 ctx->continue_block =
3938 LLVMAppendBasicBlockInContext(ctx->context, ctx->main_function, "");
3939 ctx->break_block =
3940 LLVMAppendBasicBlockInContext(ctx->context, ctx->main_function, "");
3941
3942 LLVMBuildBr(ctx->builder, ctx->continue_block);
3943 LLVMPositionBuilderAtEnd(ctx->builder, ctx->continue_block);
3944 visit_cf_list(ctx, &loop->body);
3945
3946 if (LLVMGetInsertBlock(ctx->builder))
3947 LLVMBuildBr(ctx->builder, ctx->continue_block);
3948 LLVMPositionBuilderAtEnd(ctx->builder, ctx->break_block);
3949
3950 ctx->continue_block = continue_parent;
3951 ctx->break_block = break_parent;
3952 }
3953
3954 static void visit_cf_list(struct nir_to_llvm_context *ctx,
3955 struct exec_list *list)
3956 {
3957 foreach_list_typed(nir_cf_node, node, node, list)
3958 {
3959 switch (node->type) {
3960 case nir_cf_node_block:
3961 visit_block(ctx, nir_cf_node_as_block(node));
3962 break;
3963
3964 case nir_cf_node_if:
3965 visit_if(ctx, nir_cf_node_as_if(node));
3966 break;
3967
3968 case nir_cf_node_loop:
3969 visit_loop(ctx, nir_cf_node_as_loop(node));
3970 break;
3971
3972 default:
3973 assert(0);
3974 }
3975 }
3976 }
3977
3978 static void
3979 handle_vs_input_decl(struct nir_to_llvm_context *ctx,
3980 struct nir_variable *variable)
3981 {
3982 LLVMValueRef t_list_ptr = ctx->vertex_buffers;
3983 LLVMValueRef t_offset;
3984 LLVMValueRef t_list;
3985 LLVMValueRef args[3];
3986 LLVMValueRef input;
3987 LLVMValueRef buffer_index;
3988 int index = variable->data.location - VERT_ATTRIB_GENERIC0;
3989 int idx = variable->data.location;
3990 unsigned attrib_count = glsl_count_attribute_slots(variable->type, true);
3991
3992 variable->data.driver_location = idx * 4;
3993
3994 if (ctx->options->key.vs.instance_rate_inputs & (1u << index)) {
3995 buffer_index = LLVMBuildAdd(ctx->builder, ctx->instance_id,
3996 ctx->start_instance, "");
3997 ctx->shader_info->vs.vgpr_comp_cnt = MAX2(3,
3998 ctx->shader_info->vs.vgpr_comp_cnt);
3999 } else
4000 buffer_index = LLVMBuildAdd(ctx->builder, ctx->vertex_id,
4001 ctx->base_vertex, "");
4002
4003 for (unsigned i = 0; i < attrib_count; ++i, ++idx) {
4004 t_offset = LLVMConstInt(ctx->i32, index + i, false);
4005
4006 t_list = ac_build_indexed_load_const(&ctx->ac, t_list_ptr, t_offset);
4007 args[0] = t_list;
4008 args[1] = LLVMConstInt(ctx->i32, 0, false);
4009 args[2] = buffer_index;
4010 input = ac_build_intrinsic(&ctx->ac,
4011 "llvm.SI.vs.load.input", ctx->v4f32, args, 3,
4012 AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_NOUNWIND |
4013 AC_FUNC_ATTR_LEGACY);
4014
4015 for (unsigned chan = 0; chan < 4; chan++) {
4016 LLVMValueRef llvm_chan = LLVMConstInt(ctx->i32, chan, false);
4017 ctx->inputs[radeon_llvm_reg_index_soa(idx, chan)] =
4018 to_integer(ctx, LLVMBuildExtractElement(ctx->builder,
4019 input, llvm_chan, ""));
4020 }
4021 }
4022 }
4023
4024 static void
4025 handle_gs_input_decl(struct nir_to_llvm_context *ctx,
4026 struct nir_variable *variable)
4027 {
4028 int idx = variable->data.location;
4029
4030 if (idx == VARYING_SLOT_CLIP_DIST0 ||
4031 idx == VARYING_SLOT_CULL_DIST0) {
4032 int length = glsl_get_length(glsl_get_array_element(variable->type));
4033 if (idx == VARYING_SLOT_CLIP_DIST0)
4034 ctx->num_input_clips = length;
4035 else
4036 ctx->num_input_culls = length;
4037 }
4038 }
4039
4040 static void interp_fs_input(struct nir_to_llvm_context *ctx,
4041 unsigned attr,
4042 LLVMValueRef interp_param,
4043 LLVMValueRef prim_mask,
4044 LLVMValueRef result[4])
4045 {
4046 LLVMValueRef attr_number;
4047 unsigned chan;
4048 LLVMValueRef i, j;
4049 bool interp = interp_param != NULL;
4050
4051 attr_number = LLVMConstInt(ctx->i32, attr, false);
4052
4053 /* fs.constant returns the param from the middle vertex, so it's not
4054 * really useful for flat shading. It's meant to be used for custom
4055 * interpolation (but the intrinsic can't fetch from the other two
4056 * vertices).
4057 *
4058 * Luckily, it doesn't matter, because we rely on the FLAT_SHADE state
4059 * to do the right thing. The only reason we use fs.constant is that
4060 * fs.interp cannot be used on integers, because they can be equal
4061 * to NaN.
4062 */
4063 if (interp) {
4064 interp_param = LLVMBuildBitCast(ctx->builder, interp_param,
4065 LLVMVectorType(ctx->f32, 2), "");
4066
4067 i = LLVMBuildExtractElement(ctx->builder, interp_param,
4068 ctx->i32zero, "");
4069 j = LLVMBuildExtractElement(ctx->builder, interp_param,
4070 ctx->i32one, "");
4071 }
4072
4073 for (chan = 0; chan < 4; chan++) {
4074 LLVMValueRef llvm_chan = LLVMConstInt(ctx->i32, chan, false);
4075
4076 if (interp) {
4077 result[chan] = ac_build_fs_interp(&ctx->ac,
4078 llvm_chan,
4079 attr_number,
4080 prim_mask, i, j);
4081 } else {
4082 result[chan] = ac_build_fs_interp_mov(&ctx->ac,
4083 LLVMConstInt(ctx->i32, 2, false),
4084 llvm_chan,
4085 attr_number,
4086 prim_mask);
4087 }
4088 }
4089 }
4090
4091 static void
4092 handle_fs_input_decl(struct nir_to_llvm_context *ctx,
4093 struct nir_variable *variable)
4094 {
4095 int idx = variable->data.location;
4096 unsigned attrib_count = glsl_count_attribute_slots(variable->type, false);
4097 LLVMValueRef interp;
4098
4099 variable->data.driver_location = idx * 4;
4100 ctx->input_mask |= ((1ull << attrib_count) - 1) << variable->data.location;
4101
4102 if (glsl_get_base_type(glsl_without_array(variable->type)) == GLSL_TYPE_FLOAT) {
4103 unsigned interp_type;
4104 if (variable->data.sample) {
4105 interp_type = INTERP_SAMPLE;
4106 ctx->shader_info->fs.force_persample = true;
4107 } else if (variable->data.centroid)
4108 interp_type = INTERP_CENTROID;
4109 else
4110 interp_type = INTERP_CENTER;
4111
4112 interp = lookup_interp_param(ctx, variable->data.interpolation, interp_type);
4113 } else
4114 interp = NULL;
4115
4116 for (unsigned i = 0; i < attrib_count; ++i)
4117 ctx->inputs[radeon_llvm_reg_index_soa(idx + i, 0)] = interp;
4118
4119 }
4120
4121 static void
4122 handle_shader_input_decl(struct nir_to_llvm_context *ctx,
4123 struct nir_variable *variable)
4124 {
4125 switch (ctx->stage) {
4126 case MESA_SHADER_VERTEX:
4127 handle_vs_input_decl(ctx, variable);
4128 break;
4129 case MESA_SHADER_FRAGMENT:
4130 handle_fs_input_decl(ctx, variable);
4131 break;
4132 case MESA_SHADER_GEOMETRY:
4133 handle_gs_input_decl(ctx, variable);
4134 break;
4135 default:
4136 break;
4137 }
4138
4139 }
4140
4141 static void
4142 handle_fs_inputs_pre(struct nir_to_llvm_context *ctx,
4143 struct nir_shader *nir)
4144 {
4145 unsigned index = 0;
4146 for (unsigned i = 0; i < RADEON_LLVM_MAX_INPUTS; ++i) {
4147 LLVMValueRef interp_param;
4148 LLVMValueRef *inputs = ctx->inputs +radeon_llvm_reg_index_soa(i, 0);
4149
4150 if (!(ctx->input_mask & (1ull << i)))
4151 continue;
4152
4153 if (i >= VARYING_SLOT_VAR0 || i == VARYING_SLOT_PNTC ||
4154 i == VARYING_SLOT_PRIMITIVE_ID || i == VARYING_SLOT_LAYER) {
4155 interp_param = *inputs;
4156 interp_fs_input(ctx, index, interp_param, ctx->prim_mask,
4157 inputs);
4158
4159 if (!interp_param)
4160 ctx->shader_info->fs.flat_shaded_mask |= 1u << index;
4161 ++index;
4162 } else if (i == VARYING_SLOT_POS) {
4163 for(int i = 0; i < 3; ++i)
4164 inputs[i] = ctx->frag_pos[i];
4165
4166 inputs[3] = ac_build_fdiv(&ctx->ac, ctx->f32one, ctx->frag_pos[3]);
4167 }
4168 }
4169 ctx->shader_info->fs.num_interp = index;
4170 if (ctx->input_mask & (1 << VARYING_SLOT_PNTC))
4171 ctx->shader_info->fs.has_pcoord = true;
4172 if (ctx->input_mask & (1 << VARYING_SLOT_PRIMITIVE_ID))
4173 ctx->shader_info->fs.prim_id_input = true;
4174 if (ctx->input_mask & (1 << VARYING_SLOT_LAYER))
4175 ctx->shader_info->fs.layer_input = true;
4176 ctx->shader_info->fs.input_mask = ctx->input_mask >> VARYING_SLOT_VAR0;
4177 }
4178
4179 static LLVMValueRef
4180 ac_build_alloca(struct nir_to_llvm_context *ctx,
4181 LLVMTypeRef type,
4182 const char *name)
4183 {
4184 LLVMBuilderRef builder = ctx->builder;
4185 LLVMBasicBlockRef current_block = LLVMGetInsertBlock(builder);
4186 LLVMValueRef function = LLVMGetBasicBlockParent(current_block);
4187 LLVMBasicBlockRef first_block = LLVMGetEntryBasicBlock(function);
4188 LLVMValueRef first_instr = LLVMGetFirstInstruction(first_block);
4189 LLVMBuilderRef first_builder = LLVMCreateBuilderInContext(ctx->context);
4190 LLVMValueRef res;
4191
4192 if (first_instr) {
4193 LLVMPositionBuilderBefore(first_builder, first_instr);
4194 } else {
4195 LLVMPositionBuilderAtEnd(first_builder, first_block);
4196 }
4197
4198 res = LLVMBuildAlloca(first_builder, type, name);
4199 LLVMBuildStore(builder, LLVMConstNull(type), res);
4200
4201 LLVMDisposeBuilder(first_builder);
4202
4203 return res;
4204 }
4205
4206 static LLVMValueRef si_build_alloca_undef(struct nir_to_llvm_context *ctx,
4207 LLVMTypeRef type,
4208 const char *name)
4209 {
4210 LLVMValueRef ptr = ac_build_alloca(ctx, type, name);
4211 LLVMBuildStore(ctx->builder, LLVMGetUndef(type), ptr);
4212 return ptr;
4213 }
4214
4215 static void
4216 handle_shader_output_decl(struct nir_to_llvm_context *ctx,
4217 struct nir_variable *variable)
4218 {
4219 int idx = variable->data.location + variable->data.index;
4220 unsigned attrib_count = glsl_count_attribute_slots(variable->type, false);
4221
4222 variable->data.driver_location = idx * 4;
4223
4224 if (ctx->stage == MESA_SHADER_VERTEX ||
4225 ctx->stage == MESA_SHADER_GEOMETRY) {
4226 if (idx == VARYING_SLOT_CLIP_DIST0 ||
4227 idx == VARYING_SLOT_CULL_DIST0) {
4228 int length = glsl_get_length(variable->type);
4229 if (idx == VARYING_SLOT_CLIP_DIST0) {
4230 if (ctx->stage == MESA_SHADER_VERTEX)
4231 ctx->shader_info->vs.outinfo.clip_dist_mask = (1 << length) - 1;
4232 ctx->num_output_clips = length;
4233 } else if (idx == VARYING_SLOT_CULL_DIST0) {
4234 if (ctx->stage == MESA_SHADER_VERTEX)
4235 ctx->shader_info->vs.outinfo.cull_dist_mask = (1 << length) - 1;
4236 ctx->num_output_culls = length;
4237 }
4238 if (length > 4)
4239 attrib_count = 2;
4240 else
4241 attrib_count = 1;
4242 }
4243 }
4244
4245 for (unsigned i = 0; i < attrib_count; ++i) {
4246 for (unsigned chan = 0; chan < 4; chan++) {
4247 ctx->outputs[radeon_llvm_reg_index_soa(idx + i, chan)] =
4248 si_build_alloca_undef(ctx, ctx->f32, "");
4249 }
4250 }
4251 ctx->output_mask |= ((1ull << attrib_count) - 1) << idx;
4252 }
4253
4254 static void
4255 setup_locals(struct nir_to_llvm_context *ctx,
4256 struct nir_function *func)
4257 {
4258 int i, j;
4259 ctx->num_locals = 0;
4260 nir_foreach_variable(variable, &func->impl->locals) {
4261 unsigned attrib_count = glsl_count_attribute_slots(variable->type, false);
4262 variable->data.driver_location = ctx->num_locals * 4;
4263 ctx->num_locals += attrib_count;
4264 }
4265 ctx->locals = malloc(4 * ctx->num_locals * sizeof(LLVMValueRef));
4266 if (!ctx->locals)
4267 return;
4268
4269 for (i = 0; i < ctx->num_locals; i++) {
4270 for (j = 0; j < 4; j++) {
4271 ctx->locals[i * 4 + j] =
4272 si_build_alloca_undef(ctx, ctx->f32, "temp");
4273 }
4274 }
4275 }
4276
4277 static LLVMValueRef
4278 emit_float_saturate(struct nir_to_llvm_context *ctx, LLVMValueRef v, float lo, float hi)
4279 {
4280 v = to_float(ctx, v);
4281 v = emit_intrin_2f_param(ctx, "llvm.maxnum.f32", ctx->f32, v, LLVMConstReal(ctx->f32, lo));
4282 return emit_intrin_2f_param(ctx, "llvm.minnum.f32", ctx->f32, v, LLVMConstReal(ctx->f32, hi));
4283 }
4284
4285
4286 static LLVMValueRef emit_pack_int16(struct nir_to_llvm_context *ctx,
4287 LLVMValueRef src0, LLVMValueRef src1)
4288 {
4289 LLVMValueRef const16 = LLVMConstInt(ctx->i32, 16, false);
4290 LLVMValueRef comp[2];
4291
4292 comp[0] = LLVMBuildAnd(ctx->builder, src0, LLVMConstInt(ctx-> i32, 65535, 0), "");
4293 comp[1] = LLVMBuildAnd(ctx->builder, src1, LLVMConstInt(ctx-> i32, 65535, 0), "");
4294 comp[1] = LLVMBuildShl(ctx->builder, comp[1], const16, "");
4295 return LLVMBuildOr(ctx->builder, comp[0], comp[1], "");
4296 }
4297
4298 /* Initialize arguments for the shader export intrinsic */
4299 static void
4300 si_llvm_init_export_args(struct nir_to_llvm_context *ctx,
4301 LLVMValueRef *values,
4302 unsigned target,
4303 struct ac_export_args *args)
4304 {
4305 /* Default is 0xf. Adjusted below depending on the format. */
4306 args->enabled_channels = 0xf;
4307
4308 /* Specify whether the EXEC mask represents the valid mask */
4309 args->valid_mask = 0;
4310
4311 /* Specify whether this is the last export */
4312 args->done = 0;
4313
4314 /* Specify the target we are exporting */
4315 args->target = target;
4316
4317 args->compr = false;
4318 args->out[0] = LLVMGetUndef(ctx->f32);
4319 args->out[1] = LLVMGetUndef(ctx->f32);
4320 args->out[2] = LLVMGetUndef(ctx->f32);
4321 args->out[3] = LLVMGetUndef(ctx->f32);
4322
4323 if (!values)
4324 return;
4325
4326 if (ctx->stage == MESA_SHADER_FRAGMENT && target >= V_008DFC_SQ_EXP_MRT) {
4327 LLVMValueRef val[4];
4328 unsigned index = target - V_008DFC_SQ_EXP_MRT;
4329 unsigned col_format = (ctx->options->key.fs.col_format >> (4 * index)) & 0xf;
4330 bool is_int8 = (ctx->options->key.fs.is_int8 >> index) & 1;
4331
4332 switch(col_format) {
4333 case V_028714_SPI_SHADER_ZERO:
4334 args->enabled_channels = 0; /* writemask */
4335 args->target = V_008DFC_SQ_EXP_NULL;
4336 break;
4337
4338 case V_028714_SPI_SHADER_32_R:
4339 args->enabled_channels = 1;
4340 args->out[0] = values[0];
4341 break;
4342
4343 case V_028714_SPI_SHADER_32_GR:
4344 args->enabled_channels = 0x3;
4345 args->out[0] = values[0];
4346 args->out[1] = values[1];
4347 break;
4348
4349 case V_028714_SPI_SHADER_32_AR:
4350 args->enabled_channels = 0x9;
4351 args->out[0] = values[0];
4352 args->out[3] = values[3];
4353 break;
4354
4355 case V_028714_SPI_SHADER_FP16_ABGR:
4356 args->compr = 1;
4357
4358 for (unsigned chan = 0; chan < 2; chan++) {
4359 LLVMValueRef pack_args[2] = {
4360 values[2 * chan],
4361 values[2 * chan + 1]
4362 };
4363 LLVMValueRef packed;
4364
4365 packed = ac_build_cvt_pkrtz_f16(&ctx->ac, pack_args);
4366 args->out[chan] = packed;
4367 }
4368 break;
4369
4370 case V_028714_SPI_SHADER_UNORM16_ABGR:
4371 for (unsigned chan = 0; chan < 4; chan++) {
4372 val[chan] = ac_build_clamp(&ctx->ac, values[chan]);
4373 val[chan] = LLVMBuildFMul(ctx->builder, val[chan],
4374 LLVMConstReal(ctx->f32, 65535), "");
4375 val[chan] = LLVMBuildFAdd(ctx->builder, val[chan],
4376 LLVMConstReal(ctx->f32, 0.5), "");
4377 val[chan] = LLVMBuildFPToUI(ctx->builder, val[chan],
4378 ctx->i32, "");
4379 }
4380
4381 args->compr = 1;
4382 args->out[0] = emit_pack_int16(ctx, val[0], val[1]);
4383 args->out[1] = emit_pack_int16(ctx, val[2], val[3]);
4384 break;
4385
4386 case V_028714_SPI_SHADER_SNORM16_ABGR:
4387 for (unsigned chan = 0; chan < 4; chan++) {
4388 val[chan] = emit_float_saturate(ctx, values[chan], -1, 1);
4389 val[chan] = LLVMBuildFMul(ctx->builder, val[chan],
4390 LLVMConstReal(ctx->f32, 32767), "");
4391
4392 /* If positive, add 0.5, else add -0.5. */
4393 val[chan] = LLVMBuildFAdd(ctx->builder, val[chan],
4394 LLVMBuildSelect(ctx->builder,
4395 LLVMBuildFCmp(ctx->builder, LLVMRealOGE,
4396 val[chan], ctx->f32zero, ""),
4397 LLVMConstReal(ctx->f32, 0.5),
4398 LLVMConstReal(ctx->f32, -0.5), ""), "");
4399 val[chan] = LLVMBuildFPToSI(ctx->builder, val[chan], ctx->i32, "");
4400 }
4401
4402 args->compr = 1;
4403 args->out[0] = emit_pack_int16(ctx, val[0], val[1]);
4404 args->out[1] = emit_pack_int16(ctx, val[2], val[3]);
4405 break;
4406
4407 case V_028714_SPI_SHADER_UINT16_ABGR: {
4408 LLVMValueRef max = LLVMConstInt(ctx->i32, is_int8 ? 255 : 65535, 0);
4409
4410 for (unsigned chan = 0; chan < 4; chan++) {
4411 val[chan] = to_integer(ctx, values[chan]);
4412 val[chan] = emit_minmax_int(ctx, LLVMIntULT, val[chan], max);
4413 }
4414
4415 args->compr = 1;
4416 args->out[0] = emit_pack_int16(ctx, val[0], val[1]);
4417 args->out[1] = emit_pack_int16(ctx, val[2], val[3]);
4418 break;
4419 }
4420
4421 case V_028714_SPI_SHADER_SINT16_ABGR: {
4422 LLVMValueRef max = LLVMConstInt(ctx->i32, is_int8 ? 127 : 32767, 0);
4423 LLVMValueRef min = LLVMConstInt(ctx->i32, is_int8 ? -128 : -32768, 0);
4424
4425 /* Clamp. */
4426 for (unsigned chan = 0; chan < 4; chan++) {
4427 val[chan] = to_integer(ctx, values[chan]);
4428 val[chan] = emit_minmax_int(ctx, LLVMIntSLT, val[chan], max);
4429 val[chan] = emit_minmax_int(ctx, LLVMIntSGT, val[chan], min);
4430 }
4431
4432 args->compr = 1;
4433 args->out[0] = emit_pack_int16(ctx, val[0], val[1]);
4434 args->out[1] = emit_pack_int16(ctx, val[2], val[3]);
4435 break;
4436 }
4437
4438 default:
4439 case V_028714_SPI_SHADER_32_ABGR:
4440 memcpy(&args->out[0], values, sizeof(values[0]) * 4);
4441 break;
4442 }
4443 } else
4444 memcpy(&args->out[0], values, sizeof(values[0]) * 4);
4445
4446 for (unsigned i = 0; i < 4; ++i)
4447 args->out[i] = to_float(ctx, args->out[i]);
4448 }
4449
4450 static void
4451 handle_vs_outputs_post(struct nir_to_llvm_context *ctx,
4452 struct ac_vs_output_info *outinfo)
4453 {
4454 uint32_t param_count = 0;
4455 unsigned target;
4456 unsigned pos_idx, num_pos_exports = 0;
4457 struct ac_export_args args, pos_args[4] = {};
4458 LLVMValueRef psize_value = NULL, layer_value = NULL, viewport_index_value = NULL;
4459 int i;
4460 const uint64_t clip_mask = ctx->output_mask & ((1ull << VARYING_SLOT_CLIP_DIST0) |
4461 (1ull << VARYING_SLOT_CLIP_DIST1) |
4462 (1ull << VARYING_SLOT_CULL_DIST0) |
4463 (1ull << VARYING_SLOT_CULL_DIST1));
4464
4465 outinfo->prim_id_output = 0xffffffff;
4466 outinfo->layer_output = 0xffffffff;
4467 if (clip_mask) {
4468 LLVMValueRef slots[8];
4469 unsigned j;
4470
4471 if (outinfo->cull_dist_mask)
4472 outinfo->cull_dist_mask <<= ctx->num_output_clips;
4473
4474 i = VARYING_SLOT_CLIP_DIST0;
4475 for (j = 0; j < ctx->num_output_clips; j++)
4476 slots[j] = to_float(ctx, LLVMBuildLoad(ctx->builder,
4477 ctx->outputs[radeon_llvm_reg_index_soa(i, j)], ""));
4478 i = VARYING_SLOT_CULL_DIST0;
4479 for (j = 0; j < ctx->num_output_culls; j++)
4480 slots[ctx->num_output_clips + j] = to_float(ctx, LLVMBuildLoad(ctx->builder,
4481 ctx->outputs[radeon_llvm_reg_index_soa(i, j)], ""));
4482
4483 for (i = ctx->num_output_clips + ctx->num_output_culls; i < 8; i++)
4484 slots[i] = LLVMGetUndef(ctx->f32);
4485
4486 if (ctx->num_output_clips + ctx->num_output_culls > 4) {
4487 target = V_008DFC_SQ_EXP_POS + 3;
4488 si_llvm_init_export_args(ctx, &slots[4], target, &args);
4489 memcpy(&pos_args[target - V_008DFC_SQ_EXP_POS],
4490 &args, sizeof(args));
4491 }
4492
4493 target = V_008DFC_SQ_EXP_POS + 2;
4494 si_llvm_init_export_args(ctx, &slots[0], target, &args);
4495 memcpy(&pos_args[target - V_008DFC_SQ_EXP_POS],
4496 &args, sizeof(args));
4497
4498 }
4499
4500 for (unsigned i = 0; i < RADEON_LLVM_MAX_OUTPUTS; ++i) {
4501 LLVMValueRef values[4];
4502 if (!(ctx->output_mask & (1ull << i)))
4503 continue;
4504
4505 for (unsigned j = 0; j < 4; j++)
4506 values[j] = to_float(ctx, LLVMBuildLoad(ctx->builder,
4507 ctx->outputs[radeon_llvm_reg_index_soa(i, j)], ""));
4508
4509 if (i == VARYING_SLOT_POS) {
4510 target = V_008DFC_SQ_EXP_POS;
4511 } else if (i == VARYING_SLOT_CLIP_DIST0 ||
4512 i == VARYING_SLOT_CLIP_DIST1 ||
4513 i == VARYING_SLOT_CULL_DIST0 ||
4514 i == VARYING_SLOT_CULL_DIST1) {
4515 continue;
4516 } else if (i == VARYING_SLOT_PSIZ) {
4517 outinfo->writes_pointsize = true;
4518 psize_value = values[0];
4519 continue;
4520 } else if (i == VARYING_SLOT_LAYER) {
4521 outinfo->writes_layer = true;
4522 layer_value = values[0];
4523 outinfo->layer_output = param_count;
4524 target = V_008DFC_SQ_EXP_PARAM + param_count;
4525 param_count++;
4526 } else if (i == VARYING_SLOT_VIEWPORT) {
4527 outinfo->writes_viewport_index = true;
4528 viewport_index_value = values[0];
4529 continue;
4530 } else if (i == VARYING_SLOT_PRIMITIVE_ID) {
4531 outinfo->prim_id_output = param_count;
4532 target = V_008DFC_SQ_EXP_PARAM + param_count;
4533 param_count++;
4534 } else if (i >= VARYING_SLOT_VAR0) {
4535 outinfo->export_mask |= 1u << (i - VARYING_SLOT_VAR0);
4536 target = V_008DFC_SQ_EXP_PARAM + param_count;
4537 param_count++;
4538 }
4539
4540 si_llvm_init_export_args(ctx, values, target, &args);
4541
4542 if (target >= V_008DFC_SQ_EXP_POS &&
4543 target <= (V_008DFC_SQ_EXP_POS + 3)) {
4544 memcpy(&pos_args[target - V_008DFC_SQ_EXP_POS],
4545 &args, sizeof(args));
4546 } else {
4547 ac_build_export(&ctx->ac, &args);
4548 }
4549 }
4550
4551 /* We need to add the position output manually if it's missing. */
4552 if (!pos_args[0].out[0]) {
4553 pos_args[0].enabled_channels = 0xf;
4554 pos_args[0].valid_mask = 0;
4555 pos_args[0].done = 0;
4556 pos_args[0].target = V_008DFC_SQ_EXP_POS;
4557 pos_args[0].compr = 0;
4558 pos_args[0].out[0] = ctx->f32zero; /* X */
4559 pos_args[0].out[1] = ctx->f32zero; /* Y */
4560 pos_args[0].out[2] = ctx->f32zero; /* Z */
4561 pos_args[0].out[3] = ctx->f32one; /* W */
4562 }
4563
4564 uint32_t mask = ((outinfo->writes_pointsize == true ? 1 : 0) |
4565 (outinfo->writes_layer == true ? 4 : 0) |
4566 (outinfo->writes_viewport_index == true ? 8 : 0));
4567 if (mask) {
4568 pos_args[1].enabled_channels = mask;
4569 pos_args[1].valid_mask = 0;
4570 pos_args[1].done = 0;
4571 pos_args[1].target = V_008DFC_SQ_EXP_POS + 1;
4572 pos_args[1].compr = 0;
4573 pos_args[1].out[0] = ctx->f32zero; /* X */
4574 pos_args[1].out[1] = ctx->f32zero; /* Y */
4575 pos_args[1].out[2] = ctx->f32zero; /* Z */
4576 pos_args[1].out[3] = ctx->f32zero; /* W */
4577
4578 if (outinfo->writes_pointsize == true)
4579 pos_args[1].out[0] = psize_value;
4580 if (outinfo->writes_layer == true)
4581 pos_args[1].out[2] = layer_value;
4582 if (outinfo->writes_viewport_index == true)
4583 pos_args[1].out[3] = viewport_index_value;
4584 }
4585 for (i = 0; i < 4; i++) {
4586 if (pos_args[i].out[0])
4587 num_pos_exports++;
4588 }
4589
4590 pos_idx = 0;
4591 for (i = 0; i < 4; i++) {
4592 if (!pos_args[i].out[0])
4593 continue;
4594
4595 /* Specify the target we are exporting */
4596 pos_args[i].target = V_008DFC_SQ_EXP_POS + pos_idx++;
4597 if (pos_idx == num_pos_exports)
4598 pos_args[i].done = 1;
4599 ac_build_export(&ctx->ac, &pos_args[i]);
4600 }
4601
4602 outinfo->pos_exports = num_pos_exports;
4603 outinfo->param_exports = param_count;
4604 }
4605
4606 static void
4607 handle_es_outputs_post(struct nir_to_llvm_context *ctx,
4608 struct ac_es_output_info *outinfo)
4609 {
4610 int j;
4611 uint64_t max_output_written = 0;
4612 for (unsigned i = 0; i < RADEON_LLVM_MAX_OUTPUTS; ++i) {
4613 LLVMValueRef *out_ptr = &ctx->outputs[i * 4];
4614 int param_index;
4615 int length = 4;
4616 int start = 0;
4617 if (!(ctx->output_mask & (1ull << i)))
4618 continue;
4619
4620 if (i == VARYING_SLOT_CLIP_DIST0) {
4621 length = ctx->num_output_clips;
4622 } else if (i == VARYING_SLOT_CULL_DIST0) {
4623 start = ctx->num_output_clips;
4624 length = ctx->num_output_culls;
4625 }
4626 param_index = shader_io_get_unique_index(i);
4627
4628 if (param_index > max_output_written)
4629 max_output_written = param_index;
4630
4631 for (j = 0; j < length; j++) {
4632 LLVMValueRef out_val = LLVMBuildLoad(ctx->builder, out_ptr[j], "");
4633 out_val = LLVMBuildBitCast(ctx->builder, out_val, ctx->i32, "");
4634
4635 ac_build_buffer_store_dword(&ctx->ac,
4636 ctx->esgs_ring,
4637 out_val, 1,
4638 NULL, ctx->es2gs_offset,
4639 (4 * param_index + j + start) * 4,
4640 1, 1, true, true);
4641 }
4642 }
4643 outinfo->esgs_itemsize = (max_output_written + 1) * 16;
4644 }
4645
4646 static void
4647 si_export_mrt_color(struct nir_to_llvm_context *ctx,
4648 LLVMValueRef *color, unsigned param, bool is_last)
4649 {
4650
4651 struct ac_export_args args;
4652
4653 /* Export */
4654 si_llvm_init_export_args(ctx, color, param,
4655 &args);
4656
4657 if (is_last) {
4658 args.valid_mask = 1; /* whether the EXEC mask is valid */
4659 args.done = 1; /* DONE bit */
4660 } else if (!args.enabled_channels)
4661 return; /* unnecessary NULL export */
4662
4663 ac_build_export(&ctx->ac, &args);
4664 }
4665
4666 static void
4667 si_export_mrt_z(struct nir_to_llvm_context *ctx,
4668 LLVMValueRef depth, LLVMValueRef stencil,
4669 LLVMValueRef samplemask)
4670 {
4671 struct ac_export_args args;
4672
4673 args.enabled_channels = 0;
4674 args.valid_mask = 1;
4675 args.done = 1;
4676 args.target = V_008DFC_SQ_EXP_MRTZ;
4677 args.compr = false;
4678
4679 args.out[0] = LLVMGetUndef(ctx->f32); /* R, depth */
4680 args.out[1] = LLVMGetUndef(ctx->f32); /* G, stencil test val[0:7], stencil op val[8:15] */
4681 args.out[2] = LLVMGetUndef(ctx->f32); /* B, sample mask */
4682 args.out[3] = LLVMGetUndef(ctx->f32); /* A, alpha to mask */
4683
4684 if (depth) {
4685 args.out[0] = depth;
4686 args.enabled_channels |= 0x1;
4687 }
4688
4689 if (stencil) {
4690 args.out[1] = stencil;
4691 args.enabled_channels |= 0x2;
4692 }
4693
4694 if (samplemask) {
4695 args.out[2] = samplemask;
4696 args.enabled_channels |= 0x4;
4697 }
4698
4699 /* SI (except OLAND) has a bug that it only looks
4700 * at the X writemask component. */
4701 if (ctx->options->chip_class == SI &&
4702 ctx->options->family != CHIP_OLAND)
4703 args.enabled_channels |= 0x1;
4704
4705 ac_build_export(&ctx->ac, &args);
4706 }
4707
4708 static void
4709 handle_fs_outputs_post(struct nir_to_llvm_context *ctx)
4710 {
4711 unsigned index = 0;
4712 LLVMValueRef depth = NULL, stencil = NULL, samplemask = NULL;
4713
4714 for (unsigned i = 0; i < RADEON_LLVM_MAX_OUTPUTS; ++i) {
4715 LLVMValueRef values[4];
4716
4717 if (!(ctx->output_mask & (1ull << i)))
4718 continue;
4719
4720 if (i == FRAG_RESULT_DEPTH) {
4721 ctx->shader_info->fs.writes_z = true;
4722 depth = to_float(ctx, LLVMBuildLoad(ctx->builder,
4723 ctx->outputs[radeon_llvm_reg_index_soa(i, 0)], ""));
4724 } else if (i == FRAG_RESULT_STENCIL) {
4725 ctx->shader_info->fs.writes_stencil = true;
4726 stencil = to_float(ctx, LLVMBuildLoad(ctx->builder,
4727 ctx->outputs[radeon_llvm_reg_index_soa(i, 0)], ""));
4728 } else if (i == FRAG_RESULT_SAMPLE_MASK) {
4729 ctx->shader_info->fs.writes_sample_mask = true;
4730 samplemask = to_float(ctx, LLVMBuildLoad(ctx->builder,
4731 ctx->outputs[radeon_llvm_reg_index_soa(i, 0)], ""));
4732 } else {
4733 bool last = false;
4734 for (unsigned j = 0; j < 4; j++)
4735 values[j] = to_float(ctx, LLVMBuildLoad(ctx->builder,
4736 ctx->outputs[radeon_llvm_reg_index_soa(i, j)], ""));
4737
4738 if (!ctx->shader_info->fs.writes_z && !ctx->shader_info->fs.writes_stencil && !ctx->shader_info->fs.writes_sample_mask)
4739 last = ctx->output_mask <= ((1ull << (i + 1)) - 1);
4740
4741 si_export_mrt_color(ctx, values, V_008DFC_SQ_EXP_MRT + index, last);
4742 index++;
4743 }
4744 }
4745
4746 if (depth || stencil || samplemask)
4747 si_export_mrt_z(ctx, depth, stencil, samplemask);
4748 else if (!index)
4749 si_export_mrt_color(ctx, NULL, V_008DFC_SQ_EXP_NULL, true);
4750
4751 ctx->shader_info->fs.output_mask = index ? ((1ull << index) - 1) : 0;
4752 }
4753
4754 static void
4755 emit_gs_epilogue(struct nir_to_llvm_context *ctx)
4756 {
4757 ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_OP_NOP | AC_SENDMSG_GS_DONE, ctx->gs_wave_id);
4758 }
4759
4760 static void
4761 handle_shader_outputs_post(struct nir_to_llvm_context *ctx)
4762 {
4763 switch (ctx->stage) {
4764 case MESA_SHADER_VERTEX:
4765 if (ctx->options->key.vs.as_es)
4766 handle_es_outputs_post(ctx, &ctx->shader_info->vs.es_info);
4767 else
4768 handle_vs_outputs_post(ctx, &ctx->shader_info->vs.outinfo);
4769 break;
4770 case MESA_SHADER_FRAGMENT:
4771 handle_fs_outputs_post(ctx);
4772 break;
4773 case MESA_SHADER_GEOMETRY:
4774 emit_gs_epilogue(ctx);
4775 break;
4776 default:
4777 break;
4778 }
4779 }
4780
4781 static void
4782 handle_shared_compute_var(struct nir_to_llvm_context *ctx,
4783 struct nir_variable *variable, uint32_t *offset, int idx)
4784 {
4785 unsigned size = glsl_count_attribute_slots(variable->type, false);
4786 variable->data.driver_location = *offset;
4787 *offset += size;
4788 }
4789
4790 static void ac_llvm_finalize_module(struct nir_to_llvm_context * ctx)
4791 {
4792 LLVMPassManagerRef passmgr;
4793 /* Create the pass manager */
4794 passmgr = LLVMCreateFunctionPassManagerForModule(
4795 ctx->module);
4796
4797 /* This pass should eliminate all the load and store instructions */
4798 LLVMAddPromoteMemoryToRegisterPass(passmgr);
4799
4800 /* Add some optimization passes */
4801 LLVMAddScalarReplAggregatesPass(passmgr);
4802 LLVMAddLICMPass(passmgr);
4803 LLVMAddAggressiveDCEPass(passmgr);
4804 LLVMAddCFGSimplificationPass(passmgr);
4805 LLVMAddInstructionCombiningPass(passmgr);
4806
4807 /* Run the pass */
4808 LLVMInitializeFunctionPassManager(passmgr);
4809 LLVMRunFunctionPassManager(passmgr, ctx->main_function);
4810 LLVMFinalizeFunctionPassManager(passmgr);
4811
4812 LLVMDisposeBuilder(ctx->builder);
4813 LLVMDisposePassManager(passmgr);
4814 }
4815
4816 static void
4817 ac_setup_rings(struct nir_to_llvm_context *ctx)
4818 {
4819 if (ctx->stage == MESA_SHADER_VERTEX && ctx->options->key.vs.as_es) {
4820 ctx->esgs_ring = ac_build_indexed_load_const(&ctx->ac, ctx->ring_offsets, ctx->i32one);
4821 }
4822
4823 if (ctx->is_gs_copy_shader) {
4824 ctx->gsvs_ring = ac_build_indexed_load_const(&ctx->ac, ctx->ring_offsets, LLVMConstInt(ctx->i32, 3, false));
4825 }
4826 if (ctx->stage == MESA_SHADER_GEOMETRY) {
4827 LLVMValueRef tmp;
4828 ctx->esgs_ring = ac_build_indexed_load_const(&ctx->ac, ctx->ring_offsets, LLVMConstInt(ctx->i32, 2, false));
4829 ctx->gsvs_ring = ac_build_indexed_load_const(&ctx->ac, ctx->ring_offsets, LLVMConstInt(ctx->i32, 4, false));
4830
4831 ctx->gsvs_ring = LLVMBuildBitCast(ctx->builder, ctx->gsvs_ring, ctx->v4i32, "");
4832
4833 ctx->gsvs_ring = LLVMBuildInsertElement(ctx->builder, ctx->gsvs_ring, ctx->gsvs_num_entries, LLVMConstInt(ctx->i32, 2, false), "");
4834 tmp = LLVMBuildExtractElement(ctx->builder, ctx->gsvs_ring, ctx->i32one, "");
4835 tmp = LLVMBuildOr(ctx->builder, tmp, ctx->gsvs_ring_stride, "");
4836 ctx->gsvs_ring = LLVMBuildInsertElement(ctx->builder, ctx->gsvs_ring, tmp, ctx->i32one, "");
4837
4838 ctx->gsvs_ring = LLVMBuildBitCast(ctx->builder, ctx->gsvs_ring, ctx->v16i8, "");
4839 }
4840 }
4841
4842 static
4843 LLVMModuleRef ac_translate_nir_to_llvm(LLVMTargetMachineRef tm,
4844 struct nir_shader *nir,
4845 struct ac_shader_variant_info *shader_info,
4846 const struct ac_nir_compiler_options *options)
4847 {
4848 struct nir_to_llvm_context ctx = {0};
4849 struct nir_function *func;
4850 unsigned i;
4851 ctx.options = options;
4852 ctx.shader_info = shader_info;
4853 ctx.context = LLVMContextCreate();
4854 ctx.module = LLVMModuleCreateWithNameInContext("shader", ctx.context);
4855
4856 ac_llvm_context_init(&ctx.ac, ctx.context);
4857 ctx.ac.module = ctx.module;
4858
4859 ctx.has_ds_bpermute = ctx.options->chip_class >= VI;
4860
4861 memset(shader_info, 0, sizeof(*shader_info));
4862
4863 LLVMSetTarget(ctx.module, options->supports_spill ? "amdgcn-mesa-mesa3d" : "amdgcn--");
4864
4865 LLVMTargetDataRef data_layout = LLVMCreateTargetDataLayout(tm);
4866 char *data_layout_str = LLVMCopyStringRepOfTargetData(data_layout);
4867 LLVMSetDataLayout(ctx.module, data_layout_str);
4868 LLVMDisposeTargetData(data_layout);
4869 LLVMDisposeMessage(data_layout_str);
4870
4871 setup_types(&ctx);
4872
4873 ctx.builder = LLVMCreateBuilderInContext(ctx.context);
4874 ctx.ac.builder = ctx.builder;
4875 ctx.stage = nir->stage;
4876
4877 for (i = 0; i < AC_UD_MAX_SETS; i++)
4878 shader_info->user_sgprs_locs.descriptor_sets[i].sgpr_idx = -1;
4879 for (i = 0; i < AC_UD_MAX_UD; i++)
4880 shader_info->user_sgprs_locs.shader_data[i].sgpr_idx = -1;
4881
4882 create_function(&ctx);
4883
4884 if (nir->stage == MESA_SHADER_COMPUTE) {
4885 int num_shared = 0;
4886 nir_foreach_variable(variable, &nir->shared)
4887 num_shared++;
4888 if (num_shared) {
4889 int idx = 0;
4890 uint32_t shared_size = 0;
4891 LLVMValueRef var;
4892 LLVMTypeRef i8p = LLVMPointerType(ctx.i8, LOCAL_ADDR_SPACE);
4893 nir_foreach_variable(variable, &nir->shared) {
4894 handle_shared_compute_var(&ctx, variable, &shared_size, idx);
4895 idx++;
4896 }
4897
4898 shared_size *= 16;
4899 var = LLVMAddGlobalInAddressSpace(ctx.module,
4900 LLVMArrayType(ctx.i8, shared_size),
4901 "compute_lds",
4902 LOCAL_ADDR_SPACE);
4903 LLVMSetAlignment(var, 4);
4904 ctx.shared_memory = LLVMBuildBitCast(ctx.builder, var, i8p, "");
4905 }
4906 } else if (nir->stage == MESA_SHADER_GEOMETRY) {
4907 ctx.gs_next_vertex = ac_build_alloca(&ctx, ctx.i32, "gs_next_vertex");
4908
4909 ctx.gs_max_out_vertices = nir->info->gs.vertices_out;
4910 }
4911
4912 ac_setup_rings(&ctx);
4913
4914 nir_foreach_variable(variable, &nir->inputs)
4915 handle_shader_input_decl(&ctx, variable);
4916
4917 if (nir->stage == MESA_SHADER_FRAGMENT)
4918 handle_fs_inputs_pre(&ctx, nir);
4919
4920 nir_foreach_variable(variable, &nir->outputs)
4921 handle_shader_output_decl(&ctx, variable);
4922
4923 ctx.defs = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
4924 _mesa_key_pointer_equal);
4925 ctx.phis = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
4926 _mesa_key_pointer_equal);
4927
4928 func = (struct nir_function *)exec_list_get_head(&nir->functions);
4929
4930 setup_locals(&ctx, func);
4931
4932 visit_cf_list(&ctx, &func->impl->body);
4933 phi_post_pass(&ctx);
4934
4935 handle_shader_outputs_post(&ctx);
4936 LLVMBuildRetVoid(ctx.builder);
4937
4938 ac_llvm_finalize_module(&ctx);
4939 free(ctx.locals);
4940 ralloc_free(ctx.defs);
4941 ralloc_free(ctx.phis);
4942
4943 if (nir->stage == MESA_SHADER_GEOMETRY) {
4944 shader_info->gs.gsvs_vertex_size = util_bitcount64(ctx.output_mask) * 16;
4945 shader_info->gs.max_gsvs_emit_size = shader_info->gs.gsvs_vertex_size *
4946 nir->info->gs.vertices_out;
4947 }
4948 return ctx.module;
4949 }
4950
4951 static void ac_diagnostic_handler(LLVMDiagnosticInfoRef di, void *context)
4952 {
4953 unsigned *retval = (unsigned *)context;
4954 LLVMDiagnosticSeverity severity = LLVMGetDiagInfoSeverity(di);
4955 char *description = LLVMGetDiagInfoDescription(di);
4956
4957 if (severity == LLVMDSError) {
4958 *retval = 1;
4959 fprintf(stderr, "LLVM triggered Diagnostic Handler: %s\n",
4960 description);
4961 }
4962
4963 LLVMDisposeMessage(description);
4964 }
4965
4966 static unsigned ac_llvm_compile(LLVMModuleRef M,
4967 struct ac_shader_binary *binary,
4968 LLVMTargetMachineRef tm)
4969 {
4970 unsigned retval = 0;
4971 char *err;
4972 LLVMContextRef llvm_ctx;
4973 LLVMMemoryBufferRef out_buffer;
4974 unsigned buffer_size;
4975 const char *buffer_data;
4976 LLVMBool mem_err;
4977
4978 /* Setup Diagnostic Handler*/
4979 llvm_ctx = LLVMGetModuleContext(M);
4980
4981 LLVMContextSetDiagnosticHandler(llvm_ctx, ac_diagnostic_handler,
4982 &retval);
4983
4984 /* Compile IR*/
4985 mem_err = LLVMTargetMachineEmitToMemoryBuffer(tm, M, LLVMObjectFile,
4986 &err, &out_buffer);
4987
4988 /* Process Errors/Warnings */
4989 if (mem_err) {
4990 fprintf(stderr, "%s: %s", __FUNCTION__, err);
4991 free(err);
4992 retval = 1;
4993 goto out;
4994 }
4995
4996 /* Extract Shader Code*/
4997 buffer_size = LLVMGetBufferSize(out_buffer);
4998 buffer_data = LLVMGetBufferStart(out_buffer);
4999
5000 ac_elf_read(buffer_data, buffer_size, binary);
5001
5002 /* Clean up */
5003 LLVMDisposeMemoryBuffer(out_buffer);
5004
5005 out:
5006 return retval;
5007 }
5008
5009 static void ac_compile_llvm_module(LLVMTargetMachineRef tm,
5010 LLVMModuleRef llvm_module,
5011 struct ac_shader_binary *binary,
5012 struct ac_shader_config *config,
5013 struct ac_shader_variant_info *shader_info,
5014 gl_shader_stage stage,
5015 bool dump_shader, bool supports_spill)
5016 {
5017 if (dump_shader)
5018 ac_dump_module(llvm_module);
5019
5020 memset(binary, 0, sizeof(*binary));
5021 int v = ac_llvm_compile(llvm_module, binary, tm);
5022 if (v) {
5023 fprintf(stderr, "compile failed\n");
5024 }
5025
5026 if (dump_shader)
5027 fprintf(stderr, "disasm:\n%s\n", binary->disasm_string);
5028
5029 ac_shader_binary_read_config(binary, config, 0, supports_spill);
5030
5031 LLVMContextRef ctx = LLVMGetModuleContext(llvm_module);
5032 LLVMDisposeModule(llvm_module);
5033 LLVMContextDispose(ctx);
5034
5035 if (stage == MESA_SHADER_FRAGMENT) {
5036 shader_info->num_input_vgprs = 0;
5037 if (G_0286CC_PERSP_SAMPLE_ENA(config->spi_ps_input_addr))
5038 shader_info->num_input_vgprs += 2;
5039 if (G_0286CC_PERSP_CENTER_ENA(config->spi_ps_input_addr))
5040 shader_info->num_input_vgprs += 2;
5041 if (G_0286CC_PERSP_CENTROID_ENA(config->spi_ps_input_addr))
5042 shader_info->num_input_vgprs += 2;
5043 if (G_0286CC_PERSP_PULL_MODEL_ENA(config->spi_ps_input_addr))
5044 shader_info->num_input_vgprs += 3;
5045 if (G_0286CC_LINEAR_SAMPLE_ENA(config->spi_ps_input_addr))
5046 shader_info->num_input_vgprs += 2;
5047 if (G_0286CC_LINEAR_CENTER_ENA(config->spi_ps_input_addr))
5048 shader_info->num_input_vgprs += 2;
5049 if (G_0286CC_LINEAR_CENTROID_ENA(config->spi_ps_input_addr))
5050 shader_info->num_input_vgprs += 2;
5051 if (G_0286CC_LINE_STIPPLE_TEX_ENA(config->spi_ps_input_addr))
5052 shader_info->num_input_vgprs += 1;
5053 if (G_0286CC_POS_X_FLOAT_ENA(config->spi_ps_input_addr))
5054 shader_info->num_input_vgprs += 1;
5055 if (G_0286CC_POS_Y_FLOAT_ENA(config->spi_ps_input_addr))
5056 shader_info->num_input_vgprs += 1;
5057 if (G_0286CC_POS_Z_FLOAT_ENA(config->spi_ps_input_addr))
5058 shader_info->num_input_vgprs += 1;
5059 if (G_0286CC_POS_W_FLOAT_ENA(config->spi_ps_input_addr))
5060 shader_info->num_input_vgprs += 1;
5061 if (G_0286CC_FRONT_FACE_ENA(config->spi_ps_input_addr))
5062 shader_info->num_input_vgprs += 1;
5063 if (G_0286CC_ANCILLARY_ENA(config->spi_ps_input_addr))
5064 shader_info->num_input_vgprs += 1;
5065 if (G_0286CC_SAMPLE_COVERAGE_ENA(config->spi_ps_input_addr))
5066 shader_info->num_input_vgprs += 1;
5067 if (G_0286CC_POS_FIXED_PT_ENA(config->spi_ps_input_addr))
5068 shader_info->num_input_vgprs += 1;
5069 }
5070 config->num_vgprs = MAX2(config->num_vgprs, shader_info->num_input_vgprs);
5071
5072 /* +3 for scratch wave offset and VCC */
5073 config->num_sgprs = MAX2(config->num_sgprs,
5074 shader_info->num_input_sgprs + 3);
5075 }
5076
5077 void ac_compile_nir_shader(LLVMTargetMachineRef tm,
5078 struct ac_shader_binary *binary,
5079 struct ac_shader_config *config,
5080 struct ac_shader_variant_info *shader_info,
5081 struct nir_shader *nir,
5082 const struct ac_nir_compiler_options *options,
5083 bool dump_shader)
5084 {
5085
5086 LLVMModuleRef llvm_module = ac_translate_nir_to_llvm(tm, nir, shader_info,
5087 options);
5088
5089 ac_compile_llvm_module(tm, llvm_module, binary, config, shader_info, nir->stage, dump_shader, options->supports_spill);
5090 switch (nir->stage) {
5091 case MESA_SHADER_COMPUTE:
5092 for (int i = 0; i < 3; ++i)
5093 shader_info->cs.block_size[i] = nir->info->cs.local_size[i];
5094 break;
5095 case MESA_SHADER_FRAGMENT:
5096 shader_info->fs.early_fragment_test = nir->info->fs.early_fragment_tests;
5097 break;
5098 case MESA_SHADER_GEOMETRY:
5099 shader_info->gs.vertices_in = nir->info->gs.vertices_in;
5100 shader_info->gs.vertices_out = nir->info->gs.vertices_out;
5101 shader_info->gs.output_prim = nir->info->gs.output_primitive;
5102 shader_info->gs.invocations = nir->info->gs.invocations;
5103 break;
5104 case MESA_SHADER_VERTEX:
5105 shader_info->vs.as_es = options->key.vs.as_es;
5106 break;
5107 default:
5108 break;
5109 }
5110 }
5111
5112 static void
5113 ac_gs_copy_shader_emit(struct nir_to_llvm_context *ctx)
5114 {
5115 LLVMValueRef args[9];
5116 args[0] = ctx->gsvs_ring;
5117 args[1] = LLVMBuildMul(ctx->builder, ctx->vertex_id, LLVMConstInt(ctx->i32, 4, false), "");
5118 args[3] = ctx->i32zero;
5119 args[4] = ctx->i32one; /* OFFEN */
5120 args[5] = ctx->i32zero; /* IDXEN */
5121 args[6] = ctx->i32one; /* GLC */
5122 args[7] = ctx->i32one; /* SLC */
5123 args[8] = ctx->i32zero; /* TFE */
5124
5125 int idx = 0;
5126 int clip_cull_slot = -1;
5127 for (unsigned i = 0; i < RADEON_LLVM_MAX_OUTPUTS; ++i) {
5128 int length = 4;
5129 int start = 0;
5130 int slot = idx;
5131 int slot_inc = 1;
5132 if (!(ctx->output_mask & (1ull << i)))
5133 continue;
5134
5135 if (i == VARYING_SLOT_CLIP_DIST1 ||
5136 i == VARYING_SLOT_CULL_DIST1)
5137 continue;
5138
5139 if (i == VARYING_SLOT_CLIP_DIST0 ||
5140 i == VARYING_SLOT_CULL_DIST0) {
5141 /* unpack clip and cull from a single set of slots */
5142 if (clip_cull_slot == -1) {
5143 clip_cull_slot = idx;
5144 if (ctx->num_output_clips + ctx->num_output_culls > 4)
5145 slot_inc = 2;
5146 } else {
5147 slot = clip_cull_slot;
5148 slot_inc = 0;
5149 }
5150 if (i == VARYING_SLOT_CLIP_DIST0)
5151 length = ctx->num_output_clips;
5152 if (i == VARYING_SLOT_CULL_DIST0) {
5153 start = ctx->num_output_clips;
5154 length = ctx->num_output_culls;
5155 }
5156 }
5157
5158 for (unsigned j = 0; j < length; j++) {
5159 LLVMValueRef value;
5160 args[2] = LLVMConstInt(ctx->i32,
5161 (slot * 4 + j + start) *
5162 ctx->gs_max_out_vertices * 16 * 4, false);
5163
5164 value = ac_build_intrinsic(&ctx->ac,
5165 "llvm.SI.buffer.load.dword.i32.i32",
5166 ctx->i32, args, 9,
5167 AC_FUNC_ATTR_READONLY |
5168 AC_FUNC_ATTR_LEGACY);
5169
5170 LLVMBuildStore(ctx->builder,
5171 to_float(ctx, value), ctx->outputs[radeon_llvm_reg_index_soa(i, j)]);
5172 }
5173 idx += slot_inc;
5174 }
5175 handle_vs_outputs_post(ctx, &ctx->shader_info->vs.outinfo);
5176 }
5177
5178 void ac_create_gs_copy_shader(LLVMTargetMachineRef tm,
5179 struct nir_shader *geom_shader,
5180 struct ac_shader_binary *binary,
5181 struct ac_shader_config *config,
5182 struct ac_shader_variant_info *shader_info,
5183 const struct ac_nir_compiler_options *options,
5184 bool dump_shader)
5185 {
5186 struct nir_to_llvm_context ctx = {0};
5187 ctx.context = LLVMContextCreate();
5188 ctx.module = LLVMModuleCreateWithNameInContext("shader", ctx.context);
5189 ctx.options = options;
5190 ctx.shader_info = shader_info;
5191
5192 ac_llvm_context_init(&ctx.ac, ctx.context);
5193 ctx.ac.module = ctx.module;
5194
5195 ctx.is_gs_copy_shader = true;
5196 LLVMSetTarget(ctx.module, "amdgcn--");
5197 setup_types(&ctx);
5198
5199 ctx.builder = LLVMCreateBuilderInContext(ctx.context);
5200 ctx.ac.builder = ctx.builder;
5201 ctx.stage = MESA_SHADER_VERTEX;
5202
5203 create_function(&ctx);
5204
5205 ctx.gs_max_out_vertices = geom_shader->info->gs.vertices_out;
5206 ac_setup_rings(&ctx);
5207
5208 nir_foreach_variable(variable, &geom_shader->outputs)
5209 handle_shader_output_decl(&ctx, variable);
5210
5211 ac_gs_copy_shader_emit(&ctx);
5212
5213 LLVMBuildRetVoid(ctx.builder);
5214
5215 ac_llvm_finalize_module(&ctx);
5216
5217 ac_compile_llvm_module(tm, ctx.module, binary, config, shader_info,
5218 MESA_SHADER_VERTEX,
5219 dump_shader, options->supports_spill);
5220 }