2 * Copyright © 2016 Bas Nieuwenhuizen
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:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND 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
24 #include "ac_nir_to_llvm.h"
25 #include "ac_llvm_build.h"
26 #include "ac_llvm_util.h"
27 #include "ac_binary.h"
30 #include "nir/nir_deref.h"
31 #include "util/bitscan.h"
32 #include "util/u_math.h"
33 #include "ac_shader_abi.h"
34 #include "ac_shader_util.h"
36 struct ac_nir_context
{
37 struct ac_llvm_context ac
;
38 struct ac_shader_abi
*abi
;
40 gl_shader_stage stage
;
42 LLVMValueRef
*ssa_defs
;
44 struct hash_table
*defs
;
45 struct hash_table
*phis
;
46 struct hash_table
*vars
;
48 LLVMValueRef main_function
;
49 LLVMBasicBlockRef continue_block
;
50 LLVMBasicBlockRef break_block
;
56 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
57 nir_deref_instr
*deref_instr
,
58 enum ac_descriptor_type desc_type
,
59 const nir_tex_instr
*instr
,
60 bool image
, bool write
);
63 build_store_values_extended(struct ac_llvm_context
*ac
,
66 unsigned value_stride
,
69 LLVMBuilderRef builder
= ac
->builder
;
72 for (i
= 0; i
< value_count
; i
++) {
73 LLVMValueRef ptr
= values
[i
* value_stride
];
74 LLVMValueRef index
= LLVMConstInt(ac
->i32
, i
, false);
75 LLVMValueRef value
= LLVMBuildExtractElement(builder
, vec
, index
, "");
76 LLVMBuildStore(builder
, value
, ptr
);
80 static enum ac_image_dim
81 get_ac_sampler_dim(const struct ac_llvm_context
*ctx
, enum glsl_sampler_dim dim
,
85 case GLSL_SAMPLER_DIM_1D
:
86 if (ctx
->chip_class
>= GFX9
)
87 return is_array
? ac_image_2darray
: ac_image_2d
;
88 return is_array
? ac_image_1darray
: ac_image_1d
;
89 case GLSL_SAMPLER_DIM_2D
:
90 case GLSL_SAMPLER_DIM_RECT
:
91 case GLSL_SAMPLER_DIM_EXTERNAL
:
92 return is_array
? ac_image_2darray
: ac_image_2d
;
93 case GLSL_SAMPLER_DIM_3D
:
95 case GLSL_SAMPLER_DIM_CUBE
:
97 case GLSL_SAMPLER_DIM_MS
:
98 return is_array
? ac_image_2darraymsaa
: ac_image_2dmsaa
;
99 case GLSL_SAMPLER_DIM_SUBPASS
:
100 return ac_image_2darray
;
101 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
102 return ac_image_2darraymsaa
;
104 unreachable("bad sampler dim");
108 static enum ac_image_dim
109 get_ac_image_dim(const struct ac_llvm_context
*ctx
, enum glsl_sampler_dim sdim
,
112 enum ac_image_dim dim
= get_ac_sampler_dim(ctx
, sdim
, is_array
);
114 if (dim
== ac_image_cube
||
115 (ctx
->chip_class
<= VI
&& dim
== ac_image_3d
))
116 dim
= ac_image_2darray
;
121 static LLVMTypeRef
get_def_type(struct ac_nir_context
*ctx
,
122 const nir_ssa_def
*def
)
124 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, def
->bit_size
);
125 if (def
->num_components
> 1) {
126 type
= LLVMVectorType(type
, def
->num_components
);
131 static LLVMValueRef
get_src(struct ac_nir_context
*nir
, nir_src src
)
134 return nir
->ssa_defs
[src
.ssa
->index
];
138 get_memory_ptr(struct ac_nir_context
*ctx
, nir_src src
)
140 LLVMValueRef ptr
= get_src(ctx
, src
);
141 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ctx
->ac
.lds
, &ptr
, 1, "");
142 int addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
144 return LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
145 LLVMPointerType(ctx
->ac
.i32
, addr_space
), "");
148 static LLVMBasicBlockRef
get_block(struct ac_nir_context
*nir
,
149 const struct nir_block
*b
)
151 struct hash_entry
*entry
= _mesa_hash_table_search(nir
->defs
, b
);
152 return (LLVMBasicBlockRef
)entry
->data
;
155 static LLVMValueRef
get_alu_src(struct ac_nir_context
*ctx
,
157 unsigned num_components
)
159 LLVMValueRef value
= get_src(ctx
, src
.src
);
160 bool need_swizzle
= false;
163 unsigned src_components
= ac_get_llvm_num_components(value
);
164 for (unsigned i
= 0; i
< num_components
; ++i
) {
165 assert(src
.swizzle
[i
] < src_components
);
166 if (src
.swizzle
[i
] != i
)
170 if (need_swizzle
|| num_components
!= src_components
) {
171 LLVMValueRef masks
[] = {
172 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[0], false),
173 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[1], false),
174 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[2], false),
175 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[3], false)};
177 if (src_components
> 1 && num_components
== 1) {
178 value
= LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
180 } else if (src_components
== 1 && num_components
> 1) {
181 LLVMValueRef values
[] = {value
, value
, value
, value
};
182 value
= ac_build_gather_values(&ctx
->ac
, values
, num_components
);
184 LLVMValueRef swizzle
= LLVMConstVector(masks
, num_components
);
185 value
= LLVMBuildShuffleVector(ctx
->ac
.builder
, value
, value
,
194 static LLVMValueRef
emit_int_cmp(struct ac_llvm_context
*ctx
,
195 LLVMIntPredicate pred
, LLVMValueRef src0
,
198 LLVMValueRef result
= LLVMBuildICmp(ctx
->builder
, pred
, src0
, src1
, "");
199 return LLVMBuildSelect(ctx
->builder
, result
,
200 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
204 static LLVMValueRef
emit_float_cmp(struct ac_llvm_context
*ctx
,
205 LLVMRealPredicate pred
, LLVMValueRef src0
,
209 src0
= ac_to_float(ctx
, src0
);
210 src1
= ac_to_float(ctx
, src1
);
211 result
= LLVMBuildFCmp(ctx
->builder
, pred
, src0
, src1
, "");
212 return LLVMBuildSelect(ctx
->builder
, result
,
213 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
217 static LLVMValueRef
emit_intrin_1f_param(struct ac_llvm_context
*ctx
,
219 LLVMTypeRef result_type
,
223 LLVMValueRef params
[] = {
224 ac_to_float(ctx
, src0
),
227 MAYBE_UNUSED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
228 ac_get_elem_bits(ctx
, result_type
));
229 assert(length
< sizeof(name
));
230 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 1, AC_FUNC_ATTR_READNONE
);
233 static LLVMValueRef
emit_intrin_2f_param(struct ac_llvm_context
*ctx
,
235 LLVMTypeRef result_type
,
236 LLVMValueRef src0
, LLVMValueRef src1
)
239 LLVMValueRef params
[] = {
240 ac_to_float(ctx
, src0
),
241 ac_to_float(ctx
, src1
),
244 MAYBE_UNUSED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
245 ac_get_elem_bits(ctx
, result_type
));
246 assert(length
< sizeof(name
));
247 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 2, AC_FUNC_ATTR_READNONE
);
250 static LLVMValueRef
emit_intrin_3f_param(struct ac_llvm_context
*ctx
,
252 LLVMTypeRef result_type
,
253 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
256 LLVMValueRef params
[] = {
257 ac_to_float(ctx
, src0
),
258 ac_to_float(ctx
, src1
),
259 ac_to_float(ctx
, src2
),
262 MAYBE_UNUSED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
263 ac_get_elem_bits(ctx
, result_type
));
264 assert(length
< sizeof(name
));
265 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 3, AC_FUNC_ATTR_READNONE
);
268 static LLVMValueRef
emit_bcsel(struct ac_llvm_context
*ctx
,
269 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
271 LLVMValueRef v
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
,
273 return LLVMBuildSelect(ctx
->builder
, v
,
274 ac_to_integer_or_pointer(ctx
, src1
),
275 ac_to_integer_or_pointer(ctx
, src2
), "");
278 static LLVMValueRef
emit_minmax_int(struct ac_llvm_context
*ctx
,
279 LLVMIntPredicate pred
,
280 LLVMValueRef src0
, LLVMValueRef src1
)
282 return LLVMBuildSelect(ctx
->builder
,
283 LLVMBuildICmp(ctx
->builder
, pred
, src0
, src1
, ""),
288 static LLVMValueRef
emit_iabs(struct ac_llvm_context
*ctx
,
291 return emit_minmax_int(ctx
, LLVMIntSGT
, src0
,
292 LLVMBuildNeg(ctx
->builder
, src0
, ""));
295 static LLVMValueRef
emit_uint_carry(struct ac_llvm_context
*ctx
,
297 LLVMValueRef src0
, LLVMValueRef src1
)
299 LLVMTypeRef ret_type
;
300 LLVMTypeRef types
[] = { ctx
->i32
, ctx
->i1
};
302 LLVMValueRef params
[] = { src0
, src1
};
303 ret_type
= LLVMStructTypeInContext(ctx
->context
, types
,
306 res
= ac_build_intrinsic(ctx
, intrin
, ret_type
,
307 params
, 2, AC_FUNC_ATTR_READNONE
);
309 res
= LLVMBuildExtractValue(ctx
->builder
, res
, 1, "");
310 res
= LLVMBuildZExt(ctx
->builder
, res
, ctx
->i32
, "");
314 static LLVMValueRef
emit_b2f(struct ac_llvm_context
*ctx
,
318 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
,
319 LLVMBuildBitCast(ctx
->builder
, LLVMConstReal(ctx
->f32
, 1.0), ctx
->i32
, ""),
321 result
= LLVMBuildBitCast(ctx
->builder
, result
, ctx
->f32
, "");
326 return LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f64
, "");
329 static LLVMValueRef
emit_f2b(struct ac_llvm_context
*ctx
,
332 src0
= ac_to_float(ctx
, src0
);
333 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
334 return LLVMBuildSExt(ctx
->builder
,
335 LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
, src0
, zero
, ""),
339 static LLVMValueRef
emit_b2i(struct ac_llvm_context
*ctx
,
343 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
, ctx
->i32_1
, "");
348 return LLVMBuildZExt(ctx
->builder
, result
, ctx
->i64
, "");
351 static LLVMValueRef
emit_i2b(struct ac_llvm_context
*ctx
,
354 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
355 return LLVMBuildSExt(ctx
->builder
,
356 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
, zero
, ""),
360 static LLVMValueRef
emit_f2f16(struct ac_llvm_context
*ctx
,
364 LLVMValueRef cond
= NULL
;
366 src0
= ac_to_float(ctx
, src0
);
367 result
= LLVMBuildFPTrunc(ctx
->builder
, src0
, ctx
->f16
, "");
369 if (ctx
->chip_class
>= VI
) {
370 LLVMValueRef args
[2];
371 /* Check if the result is a denormal - and flush to 0 if so. */
373 args
[1] = LLVMConstInt(ctx
->i32
, N_SUBNORMAL
| P_SUBNORMAL
, false);
374 cond
= ac_build_intrinsic(ctx
, "llvm.amdgcn.class.f16", ctx
->i1
, args
, 2, AC_FUNC_ATTR_READNONE
);
377 /* need to convert back up to f32 */
378 result
= LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f32
, "");
380 if (ctx
->chip_class
>= VI
)
381 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
384 /* 0x38800000 is smallest half float value (2^-14) in 32-bit float,
385 * so compare the result and flush to 0 if it's smaller.
387 LLVMValueRef temp
, cond2
;
388 temp
= emit_intrin_1f_param(ctx
, "llvm.fabs", ctx
->f32
, result
);
389 cond
= LLVMBuildFCmp(ctx
->builder
, LLVMRealUGT
,
390 LLVMBuildBitCast(ctx
->builder
, LLVMConstInt(ctx
->i32
, 0x38800000, false), ctx
->f32
, ""),
392 cond2
= LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
,
393 temp
, ctx
->f32_0
, "");
394 cond
= LLVMBuildAnd(ctx
->builder
, cond
, cond2
, "");
395 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
400 static LLVMValueRef
emit_umul_high(struct ac_llvm_context
*ctx
,
401 LLVMValueRef src0
, LLVMValueRef src1
)
403 LLVMValueRef dst64
, result
;
404 src0
= LLVMBuildZExt(ctx
->builder
, src0
, ctx
->i64
, "");
405 src1
= LLVMBuildZExt(ctx
->builder
, src1
, ctx
->i64
, "");
407 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
408 dst64
= LLVMBuildLShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
409 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
413 static LLVMValueRef
emit_imul_high(struct ac_llvm_context
*ctx
,
414 LLVMValueRef src0
, LLVMValueRef src1
)
416 LLVMValueRef dst64
, result
;
417 src0
= LLVMBuildSExt(ctx
->builder
, src0
, ctx
->i64
, "");
418 src1
= LLVMBuildSExt(ctx
->builder
, src1
, ctx
->i64
, "");
420 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
421 dst64
= LLVMBuildAShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
422 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
426 static LLVMValueRef
emit_bitfield_extract(struct ac_llvm_context
*ctx
,
428 const LLVMValueRef srcs
[3])
432 if (HAVE_LLVM
>= 0x0800) {
433 LLVMValueRef icond
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, srcs
[2], LLVMConstInt(ctx
->i32
, 32, false), "");
434 result
= ac_build_bfe(ctx
, srcs
[0], srcs
[1], srcs
[2], is_signed
);
435 result
= LLVMBuildSelect(ctx
->builder
, icond
, srcs
[0], result
, "");
437 /* FIXME: LLVM 7+ returns incorrect result when count is 0.
438 * https://bugs.freedesktop.org/show_bug.cgi?id=107276
440 LLVMValueRef zero
= ctx
->i32_0
;
441 LLVMValueRef icond1
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, srcs
[2], LLVMConstInt(ctx
->i32
, 32, false), "");
442 LLVMValueRef icond2
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, srcs
[2], zero
, "");
444 result
= ac_build_bfe(ctx
, srcs
[0], srcs
[1], srcs
[2], is_signed
);
445 result
= LLVMBuildSelect(ctx
->builder
, icond1
, srcs
[0], result
, "");
446 result
= LLVMBuildSelect(ctx
->builder
, icond2
, zero
, result
, "");
452 static LLVMValueRef
emit_bitfield_insert(struct ac_llvm_context
*ctx
,
453 LLVMValueRef src0
, LLVMValueRef src1
,
454 LLVMValueRef src2
, LLVMValueRef src3
)
456 LLVMValueRef bfi_args
[3], result
;
458 bfi_args
[0] = LLVMBuildShl(ctx
->builder
,
459 LLVMBuildSub(ctx
->builder
,
460 LLVMBuildShl(ctx
->builder
,
465 bfi_args
[1] = LLVMBuildShl(ctx
->builder
, src1
, src2
, "");
468 LLVMValueRef icond
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, src3
, LLVMConstInt(ctx
->i32
, 32, false), "");
471 * (arg0 & arg1) | (~arg0 & arg2) = arg2 ^ (arg0 & (arg1 ^ arg2)
472 * Use the right-hand side, which the LLVM backend can convert to V_BFI.
474 result
= LLVMBuildXor(ctx
->builder
, bfi_args
[2],
475 LLVMBuildAnd(ctx
->builder
, bfi_args
[0],
476 LLVMBuildXor(ctx
->builder
, bfi_args
[1], bfi_args
[2], ""), ""), "");
478 result
= LLVMBuildSelect(ctx
->builder
, icond
, src1
, result
, "");
482 static LLVMValueRef
emit_pack_half_2x16(struct ac_llvm_context
*ctx
,
485 LLVMValueRef comp
[2];
487 src0
= ac_to_float(ctx
, src0
);
488 comp
[0] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_0
, "");
489 comp
[1] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_1
, "");
491 return LLVMBuildBitCast(ctx
->builder
, ac_build_cvt_pkrtz_f16(ctx
, comp
),
495 static LLVMValueRef
emit_unpack_half_2x16(struct ac_llvm_context
*ctx
,
498 LLVMValueRef const16
= LLVMConstInt(ctx
->i32
, 16, false);
499 LLVMValueRef temps
[2], val
;
502 for (i
= 0; i
< 2; i
++) {
503 val
= i
== 1 ? LLVMBuildLShr(ctx
->builder
, src0
, const16
, "") : src0
;
504 val
= LLVMBuildTrunc(ctx
->builder
, val
, ctx
->i16
, "");
505 val
= LLVMBuildBitCast(ctx
->builder
, val
, ctx
->f16
, "");
506 temps
[i
] = LLVMBuildFPExt(ctx
->builder
, val
, ctx
->f32
, "");
508 return ac_build_gather_values(ctx
, temps
, 2);
511 static LLVMValueRef
emit_ddxy(struct ac_nir_context
*ctx
,
519 if (op
== nir_op_fddx_fine
)
520 mask
= AC_TID_MASK_LEFT
;
521 else if (op
== nir_op_fddy_fine
)
522 mask
= AC_TID_MASK_TOP
;
524 mask
= AC_TID_MASK_TOP_LEFT
;
526 /* for DDX we want to next X pixel, DDY next Y pixel. */
527 if (op
== nir_op_fddx_fine
||
528 op
== nir_op_fddx_coarse
||
534 result
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, src0
);
539 * this takes an I,J coordinate pair,
540 * and works out the X and Y derivatives.
541 * it returns DDX(I), DDX(J), DDY(I), DDY(J).
543 static LLVMValueRef
emit_ddxy_interp(
544 struct ac_nir_context
*ctx
,
545 LLVMValueRef interp_ij
)
547 LLVMValueRef result
[4], a
;
550 for (i
= 0; i
< 2; i
++) {
551 a
= LLVMBuildExtractElement(ctx
->ac
.builder
, interp_ij
,
552 LLVMConstInt(ctx
->ac
.i32
, i
, false), "");
553 result
[i
] = emit_ddxy(ctx
, nir_op_fddx
, a
);
554 result
[2+i
] = emit_ddxy(ctx
, nir_op_fddy
, a
);
556 return ac_build_gather_values(&ctx
->ac
, result
, 4);
559 static void visit_alu(struct ac_nir_context
*ctx
, const nir_alu_instr
*instr
)
561 LLVMValueRef src
[4], result
= NULL
;
562 unsigned num_components
= instr
->dest
.dest
.ssa
.num_components
;
563 unsigned src_components
;
564 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.dest
.ssa
);
566 assert(nir_op_infos
[instr
->op
].num_inputs
<= ARRAY_SIZE(src
));
573 case nir_op_pack_half_2x16
:
576 case nir_op_unpack_half_2x16
:
579 case nir_op_cube_face_coord
:
580 case nir_op_cube_face_index
:
584 src_components
= num_components
;
587 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
588 src
[i
] = get_alu_src(ctx
, instr
->src
[i
], src_components
);
596 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
597 result
= LLVMBuildFNeg(ctx
->ac
.builder
, src
[0], "");
600 result
= LLVMBuildNeg(ctx
->ac
.builder
, src
[0], "");
603 result
= LLVMBuildNot(ctx
->ac
.builder
, src
[0], "");
606 result
= LLVMBuildAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
609 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
610 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
611 result
= LLVMBuildFAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
614 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
615 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
616 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], src
[1], "");
619 result
= LLVMBuildSub(ctx
->ac
.builder
, src
[0], src
[1], "");
622 result
= LLVMBuildMul(ctx
->ac
.builder
, src
[0], src
[1], "");
625 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
628 result
= LLVMBuildURem(ctx
->ac
.builder
, src
[0], src
[1], "");
631 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
632 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
633 result
= ac_build_fdiv(&ctx
->ac
, src
[0], src
[1]);
634 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
635 ac_to_float_type(&ctx
->ac
, def_type
), result
);
636 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[1] , result
, "");
637 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], result
, "");
640 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
641 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
642 result
= LLVMBuildFRem(ctx
->ac
.builder
, src
[0], src
[1], "");
645 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
648 result
= LLVMBuildSDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
651 result
= LLVMBuildUDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
654 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
655 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
656 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[0], src
[1], "");
659 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
660 result
= ac_build_fdiv(&ctx
->ac
, instr
->dest
.dest
.ssa
.bit_size
== 32 ? ctx
->ac
.f32_1
: ctx
->ac
.f64_1
,
664 result
= LLVMBuildAnd(ctx
->ac
.builder
, src
[0], src
[1], "");
667 result
= LLVMBuildOr(ctx
->ac
.builder
, src
[0], src
[1], "");
670 result
= LLVMBuildXor(ctx
->ac
.builder
, src
[0], src
[1], "");
673 result
= LLVMBuildShl(ctx
->ac
.builder
, src
[0],
674 LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
675 LLVMTypeOf(src
[0]), ""),
679 result
= LLVMBuildAShr(ctx
->ac
.builder
, src
[0],
680 LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
681 LLVMTypeOf(src
[0]), ""),
685 result
= LLVMBuildLShr(ctx
->ac
.builder
, src
[0],
686 LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
687 LLVMTypeOf(src
[0]), ""),
691 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
694 result
= emit_int_cmp(&ctx
->ac
, LLVMIntNE
, src
[0], src
[1]);
697 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, src
[0], src
[1]);
700 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSGE
, src
[0], src
[1]);
703 result
= emit_int_cmp(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
706 result
= emit_int_cmp(&ctx
->ac
, LLVMIntUGE
, src
[0], src
[1]);
709 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOEQ
, src
[0], src
[1]);
712 result
= emit_float_cmp(&ctx
->ac
, LLVMRealUNE
, src
[0], src
[1]);
715 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOLT
, src
[0], src
[1]);
718 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOGE
, src
[0], src
[1]);
721 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.fabs",
722 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
725 result
= emit_iabs(&ctx
->ac
, src
[0]);
728 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSGT
, src
[0], src
[1]);
731 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
734 result
= emit_minmax_int(&ctx
->ac
, LLVMIntUGT
, src
[0], src
[1]);
737 result
= emit_minmax_int(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
740 result
= ac_build_isign(&ctx
->ac
, src
[0],
741 instr
->dest
.dest
.ssa
.bit_size
);
744 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
745 result
= ac_build_fsign(&ctx
->ac
, src
[0],
746 instr
->dest
.dest
.ssa
.bit_size
);
749 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
750 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
753 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.trunc",
754 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
757 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.ceil",
758 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
760 case nir_op_fround_even
:
761 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.rint",
762 ac_to_float_type(&ctx
->ac
, def_type
),src
[0]);
765 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
766 result
= ac_build_fract(&ctx
->ac
, src
[0],
767 instr
->dest
.dest
.ssa
.bit_size
);
770 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sin",
771 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
774 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.cos",
775 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
778 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
779 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
782 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.exp2",
783 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
786 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.log2",
787 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
790 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
791 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
792 result
= ac_build_fdiv(&ctx
->ac
, instr
->dest
.dest
.ssa
.bit_size
== 32 ? ctx
->ac
.f32_1
: ctx
->ac
.f64_1
,
795 case nir_op_frexp_exp
:
796 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
797 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.frexp.exp.i32.f64",
798 ctx
->ac
.i32
, src
, 1, AC_FUNC_ATTR_READNONE
);
801 case nir_op_frexp_sig
:
802 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
803 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.frexp.mant.f64",
804 ctx
->ac
.f64
, src
, 1, AC_FUNC_ATTR_READNONE
);
807 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
808 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
809 if (ctx
->ac
.chip_class
< GFX9
&&
810 instr
->dest
.dest
.ssa
.bit_size
== 32) {
811 /* Only pre-GFX9 chips do not flush denorms. */
812 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.canonicalize",
813 ac_to_float_type(&ctx
->ac
, def_type
),
818 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
819 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
820 if (ctx
->ac
.chip_class
< GFX9
&&
821 instr
->dest
.dest
.ssa
.bit_size
== 32) {
822 /* Only pre-GFX9 chips do not flush denorms. */
823 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.canonicalize",
824 ac_to_float_type(&ctx
->ac
, def_type
),
829 result
= emit_intrin_3f_param(&ctx
->ac
, "llvm.fmuladd",
830 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1], src
[2]);
833 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
834 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) == 32)
835 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f32", ctx
->ac
.f32
, src
, 2, AC_FUNC_ATTR_READNONE
);
837 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f64", ctx
->ac
.f64
, src
, 2, AC_FUNC_ATTR_READNONE
);
839 case nir_op_ibitfield_extract
:
840 result
= emit_bitfield_extract(&ctx
->ac
, true, src
);
842 case nir_op_ubitfield_extract
:
843 result
= emit_bitfield_extract(&ctx
->ac
, false, src
);
845 case nir_op_bitfield_insert
:
846 result
= emit_bitfield_insert(&ctx
->ac
, src
[0], src
[1], src
[2], src
[3]);
848 case nir_op_bitfield_reverse
:
849 result
= ac_build_bitfield_reverse(&ctx
->ac
, src
[0]);
851 case nir_op_bit_count
:
852 result
= ac_build_bit_count(&ctx
->ac
, src
[0]);
857 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
858 src
[i
] = ac_to_integer(&ctx
->ac
, src
[i
]);
859 result
= ac_build_gather_values(&ctx
->ac
, src
, num_components
);
864 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
865 result
= LLVMBuildFPToSI(ctx
->ac
.builder
, src
[0], def_type
, "");
870 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
871 result
= LLVMBuildFPToUI(ctx
->ac
.builder
, src
[0], def_type
, "");
876 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
877 result
= LLVMBuildSIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
882 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
883 result
= LLVMBuildUIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
885 case nir_op_f2f16_rtz
:
886 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
887 LLVMValueRef param
[2] = { src
[0], ctx
->ac
.f32_0
};
888 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, param
);
889 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
891 case nir_op_f2f16_rtne
:
895 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
896 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
897 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
899 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
904 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
905 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
906 result
= LLVMBuildZExt(ctx
->ac
.builder
, src
[0], def_type
, "");
908 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
913 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
914 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
915 result
= LLVMBuildSExt(ctx
->ac
.builder
, src
[0], def_type
, "");
917 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
920 result
= emit_bcsel(&ctx
->ac
, src
[0], src
[1], src
[2]);
922 case nir_op_find_lsb
:
923 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
924 result
= ac_find_lsb(&ctx
->ac
, ctx
->ac
.i32
, src
[0]);
926 case nir_op_ufind_msb
:
927 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
928 result
= ac_build_umsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
930 case nir_op_ifind_msb
:
931 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
932 result
= ac_build_imsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
934 case nir_op_uadd_carry
:
935 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
936 src
[1] = ac_to_integer(&ctx
->ac
, src
[1]);
937 result
= emit_uint_carry(&ctx
->ac
, "llvm.uadd.with.overflow.i32", src
[0], src
[1]);
939 case nir_op_usub_borrow
:
940 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
941 src
[1] = ac_to_integer(&ctx
->ac
, src
[1]);
942 result
= emit_uint_carry(&ctx
->ac
, "llvm.usub.with.overflow.i32", src
[0], src
[1]);
947 result
= emit_b2f(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
950 result
= emit_f2b(&ctx
->ac
, src
[0]);
955 result
= emit_b2i(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
958 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
959 result
= emit_i2b(&ctx
->ac
, src
[0]);
961 case nir_op_fquantize2f16
:
962 result
= emit_f2f16(&ctx
->ac
, src
[0]);
964 case nir_op_umul_high
:
965 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
966 src
[1] = ac_to_integer(&ctx
->ac
, src
[1]);
967 result
= emit_umul_high(&ctx
->ac
, src
[0], src
[1]);
969 case nir_op_imul_high
:
970 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
971 src
[1] = ac_to_integer(&ctx
->ac
, src
[1]);
972 result
= emit_imul_high(&ctx
->ac
, src
[0], src
[1]);
974 case nir_op_pack_half_2x16
:
975 result
= emit_pack_half_2x16(&ctx
->ac
, src
[0]);
977 case nir_op_unpack_half_2x16
:
978 result
= emit_unpack_half_2x16(&ctx
->ac
, src
[0]);
982 case nir_op_fddx_fine
:
983 case nir_op_fddy_fine
:
984 case nir_op_fddx_coarse
:
985 case nir_op_fddy_coarse
:
986 result
= emit_ddxy(ctx
, instr
->op
, src
[0]);
989 case nir_op_unpack_64_2x32_split_x
: {
990 assert(ac_get_llvm_num_components(src
[0]) == 1);
991 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
994 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
999 case nir_op_unpack_64_2x32_split_y
: {
1000 assert(ac_get_llvm_num_components(src
[0]) == 1);
1001 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1004 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1009 case nir_op_pack_64_2x32_split
: {
1010 LLVMValueRef tmp
= LLVMGetUndef(ctx
->ac
.v2i32
);
1011 tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
1012 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i64
, "");
1016 case nir_op_cube_face_coord
: {
1017 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1018 LLVMValueRef results
[2];
1020 for (unsigned chan
= 0; chan
< 3; chan
++)
1021 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1022 results
[0] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubetc",
1023 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1024 results
[1] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubesc",
1025 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1026 result
= ac_build_gather_values(&ctx
->ac
, results
, 2);
1030 case nir_op_cube_face_index
: {
1031 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1033 for (unsigned chan
= 0; chan
< 3; chan
++)
1034 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1035 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubeid",
1036 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1041 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1042 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1043 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1044 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1047 result
= emit_minmax_int(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
1048 result
= emit_minmax_int(&ctx
->ac
, LLVMIntULT
, result
, src
[2]);
1051 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
1052 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSLT
, result
, src
[2]);
1055 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1056 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1057 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1058 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1061 result
= emit_minmax_int(&ctx
->ac
, LLVMIntUGT
, src
[0], src
[1]);
1062 result
= emit_minmax_int(&ctx
->ac
, LLVMIntUGT
, result
, src
[2]);
1065 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSGT
, src
[0], src
[1]);
1066 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSGT
, result
, src
[2]);
1068 case nir_op_fmed3
: {
1069 LLVMValueRef tmp1
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1070 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1071 LLVMValueRef tmp2
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1072 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1073 tmp2
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1074 ac_to_float_type(&ctx
->ac
, def_type
), tmp2
, src
[2]);
1075 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1076 ac_to_float_type(&ctx
->ac
, def_type
), tmp1
, tmp2
);
1079 case nir_op_imed3
: {
1080 LLVMValueRef tmp1
= emit_minmax_int(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
1081 LLVMValueRef tmp2
= emit_minmax_int(&ctx
->ac
, LLVMIntSGT
, src
[0], src
[1]);
1082 tmp2
= emit_minmax_int(&ctx
->ac
, LLVMIntSLT
, tmp2
, src
[2]);
1083 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSGT
, tmp1
, tmp2
);
1086 case nir_op_umed3
: {
1087 LLVMValueRef tmp1
= emit_minmax_int(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
1088 LLVMValueRef tmp2
= emit_minmax_int(&ctx
->ac
, LLVMIntUGT
, src
[0], src
[1]);
1089 tmp2
= emit_minmax_int(&ctx
->ac
, LLVMIntULT
, tmp2
, src
[2]);
1090 result
= emit_minmax_int(&ctx
->ac
, LLVMIntUGT
, tmp1
, tmp2
);
1095 fprintf(stderr
, "Unknown NIR alu instr: ");
1096 nir_print_instr(&instr
->instr
, stderr
);
1097 fprintf(stderr
, "\n");
1102 assert(instr
->dest
.dest
.is_ssa
);
1103 result
= ac_to_integer_or_pointer(&ctx
->ac
, result
);
1104 ctx
->ssa_defs
[instr
->dest
.dest
.ssa
.index
] = result
;
1108 static void visit_load_const(struct ac_nir_context
*ctx
,
1109 const nir_load_const_instr
*instr
)
1111 LLVMValueRef values
[4], value
= NULL
;
1112 LLVMTypeRef element_type
=
1113 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
1115 for (unsigned i
= 0; i
< instr
->def
.num_components
; ++i
) {
1116 switch (instr
->def
.bit_size
) {
1118 values
[i
] = LLVMConstInt(element_type
,
1119 instr
->value
.u16
[i
], false);
1122 values
[i
] = LLVMConstInt(element_type
,
1123 instr
->value
.u32
[i
], false);
1126 values
[i
] = LLVMConstInt(element_type
,
1127 instr
->value
.u64
[i
], false);
1131 "unsupported nir load_const bit_size: %d\n",
1132 instr
->def
.bit_size
);
1136 if (instr
->def
.num_components
> 1) {
1137 value
= LLVMConstVector(values
, instr
->def
.num_components
);
1141 ctx
->ssa_defs
[instr
->def
.index
] = value
;
1145 get_buffer_size(struct ac_nir_context
*ctx
, LLVMValueRef descriptor
, bool in_elements
)
1148 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1149 LLVMConstInt(ctx
->ac
.i32
, 2, false), "");
1152 if (ctx
->ac
.chip_class
== VI
&& in_elements
) {
1153 /* On VI, the descriptor contains the size in bytes,
1154 * but TXQ must return the size in elements.
1155 * The stride is always non-zero for resources using TXQ.
1157 LLVMValueRef stride
=
1158 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1160 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
,
1161 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
1162 stride
= LLVMBuildAnd(ctx
->ac
.builder
, stride
,
1163 LLVMConstInt(ctx
->ac
.i32
, 0x3fff, false), "");
1165 size
= LLVMBuildUDiv(ctx
->ac
.builder
, size
, stride
, "");
1170 static LLVMValueRef
lower_gather4_integer(struct ac_llvm_context
*ctx
,
1172 struct ac_image_args
*args
,
1173 const nir_tex_instr
*instr
)
1175 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1176 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1177 LLVMValueRef half_texel
[2];
1178 LLVMValueRef compare_cube_wa
= NULL
;
1179 LLVMValueRef result
;
1183 struct ac_image_args txq_args
= { 0 };
1185 txq_args
.dim
= get_ac_sampler_dim(ctx
, instr
->sampler_dim
, instr
->is_array
);
1186 txq_args
.opcode
= ac_image_get_resinfo
;
1187 txq_args
.dmask
= 0xf;
1188 txq_args
.lod
= ctx
->i32_0
;
1189 txq_args
.resource
= args
->resource
;
1190 txq_args
.attributes
= AC_FUNC_ATTR_READNONE
;
1191 LLVMValueRef size
= ac_build_image_opcode(ctx
, &txq_args
);
1193 for (unsigned c
= 0; c
< 2; c
++) {
1194 half_texel
[c
] = LLVMBuildExtractElement(ctx
->builder
, size
,
1195 LLVMConstInt(ctx
->i32
, c
, false), "");
1196 half_texel
[c
] = LLVMBuildUIToFP(ctx
->builder
, half_texel
[c
], ctx
->f32
, "");
1197 half_texel
[c
] = ac_build_fdiv(ctx
, ctx
->f32_1
, half_texel
[c
]);
1198 half_texel
[c
] = LLVMBuildFMul(ctx
->builder
, half_texel
[c
],
1199 LLVMConstReal(ctx
->f32
, -0.5), "");
1203 LLVMValueRef orig_coords
[2] = { args
->coords
[0], args
->coords
[1] };
1205 for (unsigned c
= 0; c
< 2; c
++) {
1207 tmp
= LLVMBuildBitCast(ctx
->builder
, args
->coords
[c
], ctx
->f32
, "");
1208 args
->coords
[c
] = LLVMBuildFAdd(ctx
->builder
, tmp
, half_texel
[c
], "");
1212 * Apparantly cube has issue with integer types that the workaround doesn't solve,
1213 * so this tests if the format is 8_8_8_8 and an integer type do an alternate
1214 * workaround by sampling using a scaled type and converting.
1215 * This is taken from amdgpu-pro shaders.
1217 /* NOTE this produces some ugly code compared to amdgpu-pro,
1218 * LLVM ends up dumping SGPRs into VGPRs to deal with the compare/select,
1219 * and then reads them back. -pro generates two selects,
1220 * one s_cmp for the descriptor rewriting
1221 * one v_cmp for the coordinate and result changes.
1223 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1224 LLVMValueRef tmp
, tmp2
;
1226 /* workaround 8/8/8/8 uint/sint cube gather bug */
1227 /* first detect it then change to a scaled read and f2i */
1228 tmp
= LLVMBuildExtractElement(ctx
->builder
, args
->resource
, ctx
->i32_1
, "");
1231 /* extract the DATA_FORMAT */
1232 tmp
= ac_build_bfe(ctx
, tmp
, LLVMConstInt(ctx
->i32
, 20, false),
1233 LLVMConstInt(ctx
->i32
, 6, false), false);
1235 /* is the DATA_FORMAT == 8_8_8_8 */
1236 compare_cube_wa
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, tmp
, LLVMConstInt(ctx
->i32
, V_008F14_IMG_DATA_FORMAT_8_8_8_8
, false), "");
1238 if (stype
== GLSL_TYPE_UINT
)
1239 /* Create a NUM FORMAT - 0x2 or 0x4 - USCALED or UINT */
1240 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, LLVMConstInt(ctx
->i32
, 0x8000000, false),
1241 LLVMConstInt(ctx
->i32
, 0x10000000, false), "");
1243 /* Create a NUM FORMAT - 0x3 or 0x5 - SSCALED or SINT */
1244 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, LLVMConstInt(ctx
->i32
, 0xc000000, false),
1245 LLVMConstInt(ctx
->i32
, 0x14000000, false), "");
1247 /* replace the NUM FORMAT in the descriptor */
1248 tmp2
= LLVMBuildAnd(ctx
->builder
, tmp2
, LLVMConstInt(ctx
->i32
, C_008F14_NUM_FORMAT_GFX6
, false), "");
1249 tmp2
= LLVMBuildOr(ctx
->builder
, tmp2
, tmp
, "");
1251 args
->resource
= LLVMBuildInsertElement(ctx
->builder
, args
->resource
, tmp2
, ctx
->i32_1
, "");
1253 /* don't modify the coordinates for this case */
1254 for (unsigned c
= 0; c
< 2; ++c
)
1255 args
->coords
[c
] = LLVMBuildSelect(
1256 ctx
->builder
, compare_cube_wa
,
1257 orig_coords
[c
], args
->coords
[c
], "");
1260 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1261 result
= ac_build_image_opcode(ctx
, args
);
1263 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1264 LLVMValueRef tmp
, tmp2
;
1266 /* if the cube workaround is in place, f2i the result. */
1267 for (unsigned c
= 0; c
< 4; c
++) {
1268 tmp
= LLVMBuildExtractElement(ctx
->builder
, result
, LLVMConstInt(ctx
->i32
, c
, false), "");
1269 if (stype
== GLSL_TYPE_UINT
)
1270 tmp2
= LLVMBuildFPToUI(ctx
->builder
, tmp
, ctx
->i32
, "");
1272 tmp2
= LLVMBuildFPToSI(ctx
->builder
, tmp
, ctx
->i32
, "");
1273 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->i32
, "");
1274 tmp2
= LLVMBuildBitCast(ctx
->builder
, tmp2
, ctx
->i32
, "");
1275 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, tmp2
, tmp
, "");
1276 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f32
, "");
1277 result
= LLVMBuildInsertElement(ctx
->builder
, result
, tmp
, LLVMConstInt(ctx
->i32
, c
, false), "");
1283 static nir_deref_instr
*get_tex_texture_deref(const nir_tex_instr
*instr
)
1285 nir_deref_instr
*texture_deref_instr
= NULL
;
1287 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
1288 switch (instr
->src
[i
].src_type
) {
1289 case nir_tex_src_texture_deref
:
1290 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
1296 return texture_deref_instr
;
1299 static LLVMValueRef
build_tex_intrinsic(struct ac_nir_context
*ctx
,
1300 const nir_tex_instr
*instr
,
1301 struct ac_image_args
*args
)
1303 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
1304 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
1306 if (ctx
->abi
->gfx9_stride_size_workaround
) {
1307 return ac_build_buffer_load_format_gfx9_safe(&ctx
->ac
,
1311 util_last_bit(mask
),
1314 return ac_build_buffer_load_format(&ctx
->ac
,
1318 util_last_bit(mask
),
1323 args
->opcode
= ac_image_sample
;
1325 switch (instr
->op
) {
1327 case nir_texop_txf_ms
:
1328 case nir_texop_samples_identical
:
1329 args
->opcode
= args
->level_zero
||
1330 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
?
1331 ac_image_load
: ac_image_load_mip
;
1332 args
->level_zero
= false;
1335 case nir_texop_query_levels
:
1336 args
->opcode
= ac_image_get_resinfo
;
1338 args
->lod
= ctx
->ac
.i32_0
;
1339 args
->level_zero
= false;
1342 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1344 args
->level_zero
= true;
1348 args
->opcode
= ac_image_gather4
;
1349 args
->level_zero
= true;
1352 args
->opcode
= ac_image_get_lod
;
1358 if (instr
->op
== nir_texop_tg4
&& ctx
->ac
.chip_class
<= VI
) {
1359 nir_deref_instr
*texture_deref_instr
= get_tex_texture_deref(instr
);
1360 nir_variable
*var
= nir_deref_instr_get_variable(texture_deref_instr
);
1361 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1362 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1363 if (stype
== GLSL_TYPE_UINT
|| stype
== GLSL_TYPE_INT
) {
1364 return lower_gather4_integer(&ctx
->ac
, var
, args
, instr
);
1368 /* Fixup for GFX9 which allocates 1D textures as 2D. */
1369 if (instr
->op
== nir_texop_lod
&& ctx
->ac
.chip_class
>= GFX9
) {
1370 if ((args
->dim
== ac_image_2darray
||
1371 args
->dim
== ac_image_2d
) && !args
->coords
[1]) {
1372 args
->coords
[1] = ctx
->ac
.i32_0
;
1376 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1377 return ac_build_image_opcode(&ctx
->ac
, args
);
1380 static LLVMValueRef
visit_vulkan_resource_reindex(struct ac_nir_context
*ctx
,
1381 nir_intrinsic_instr
*instr
)
1383 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
1384 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
1386 LLVMValueRef result
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
1387 LLVMSetMetadata(result
, ctx
->ac
.uniform_md_kind
, ctx
->ac
.empty_md
);
1391 static LLVMValueRef
visit_load_push_constant(struct ac_nir_context
*ctx
,
1392 nir_intrinsic_instr
*instr
)
1394 LLVMValueRef ptr
, addr
;
1396 addr
= LLVMConstInt(ctx
->ac
.i32
, nir_intrinsic_base(instr
), 0);
1397 addr
= LLVMBuildAdd(ctx
->ac
.builder
, addr
,
1398 get_src(ctx
, instr
->src
[0]), "");
1400 ptr
= ac_build_gep0(&ctx
->ac
, ctx
->abi
->push_constants
, addr
);
1402 if (instr
->dest
.ssa
.bit_size
== 16) {
1403 unsigned load_dwords
= instr
->dest
.ssa
.num_components
/ 2 + 1;
1404 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt16TypeInContext(ctx
->ac
.context
), 2 * load_dwords
);
1405 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1406 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1407 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, vec_type
, "");
1408 LLVMValueRef cond
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, ctx
->ac
.i32_1
, "");
1409 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->ac
.i1
, "");
1410 LLVMValueRef mask
[] = { LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
1411 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
1412 LLVMConstInt(ctx
->ac
.i32
, 4, false)};
1413 LLVMValueRef swizzle_aligned
= LLVMConstVector(&mask
[0], instr
->dest
.ssa
.num_components
);
1414 LLVMValueRef swizzle_unaligned
= LLVMConstVector(&mask
[1], instr
->dest
.ssa
.num_components
);
1415 LLVMValueRef shuffle_aligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_aligned
, "");
1416 LLVMValueRef shuffle_unaligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_unaligned
, "");
1417 res
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, shuffle_unaligned
, shuffle_aligned
, "");
1418 return LLVMBuildBitCast(ctx
->ac
.builder
, res
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1421 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, get_def_type(ctx
, &instr
->dest
.ssa
));
1423 return LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1426 static LLVMValueRef
visit_get_buffer_size(struct ac_nir_context
*ctx
,
1427 const nir_intrinsic_instr
*instr
)
1429 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
1431 return get_buffer_size(ctx
, ctx
->abi
->load_ssbo(ctx
->abi
, index
, false), false);
1434 static uint32_t widen_mask(uint32_t mask
, unsigned multiplier
)
1436 uint32_t new_mask
= 0;
1437 for(unsigned i
= 0; i
< 32 && (1u << i
) <= mask
; ++i
)
1438 if (mask
& (1u << i
))
1439 new_mask
|= ((1u << multiplier
) - 1u) << (i
* multiplier
);
1443 static LLVMValueRef
extract_vector_range(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
1444 unsigned start
, unsigned count
)
1446 LLVMValueRef mask
[] = {
1447 ctx
->i32_0
, ctx
->i32_1
,
1448 LLVMConstInt(ctx
->i32
, 2, false), LLVMConstInt(ctx
->i32
, 3, false) };
1450 unsigned src_elements
= ac_get_llvm_num_components(src
);
1452 if (count
== src_elements
) {
1455 } else if (count
== 1) {
1456 assert(start
< src_elements
);
1457 return LLVMBuildExtractElement(ctx
->builder
, src
, mask
[start
], "");
1459 assert(start
+ count
<= src_elements
);
1461 LLVMValueRef swizzle
= LLVMConstVector(&mask
[start
], count
);
1462 return LLVMBuildShuffleVector(ctx
->builder
, src
, src
, swizzle
, "");
1466 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1467 nir_intrinsic_instr
*instr
)
1469 const char *store_name
;
1470 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1471 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1472 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1473 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1474 LLVMValueRef glc
= ctx
->ac
.i1false
;
1476 if (access
& (ACCESS_VOLATILE
| ACCESS_COHERENT
))
1477 glc
= ctx
->ac
.i1true
;
1479 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1480 get_src(ctx
, instr
->src
[1]), true);
1481 LLVMValueRef base_data
= ac_to_float(&ctx
->ac
, src_data
);
1482 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1483 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1487 LLVMValueRef data
, offset
;
1488 LLVMTypeRef data_type
;
1490 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1492 /* Due to an LLVM limitation, split 3-element writes
1493 * into a 2-element and a 1-element write. */
1495 writemask
|= 1 << (start
+ 2);
1498 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1500 /* we can only store 4 DWords at the same time.
1501 * can only happen for 64 Bit vectors. */
1502 if (num_bytes
> 16) {
1503 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1508 /* check alignment of 16 Bit stores */
1509 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1510 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1514 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1517 offset
= base_offset
;
1519 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1520 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1522 if (num_bytes
== 2) {
1523 store_name
= "llvm.amdgcn.tbuffer.store.i32";
1524 data_type
= ctx
->ac
.i32
;
1525 LLVMValueRef tbuffer_params
[] = {
1528 ctx
->ac
.i32_0
, /* vindex */
1529 offset
, /* voffset */
1532 LLVMConstInt(ctx
->ac
.i32
, 2, false), // dfmt (= 16bit)
1533 LLVMConstInt(ctx
->ac
.i32
, 4, false), // nfmt (= uint)
1537 ac_build_intrinsic(&ctx
->ac
, store_name
,
1538 ctx
->ac
.voidt
, tbuffer_params
, 10, 0);
1540 switch (num_bytes
) {
1541 case 16: /* v4f32 */
1542 store_name
= "llvm.amdgcn.buffer.store.v4f32";
1543 data_type
= ctx
->ac
.v4f32
;
1546 store_name
= "llvm.amdgcn.buffer.store.v2f32";
1547 data_type
= ctx
->ac
.v2f32
;
1550 store_name
= "llvm.amdgcn.buffer.store.f32";
1551 data_type
= ctx
->ac
.f32
;
1554 unreachable("Malformed vector store.");
1556 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1557 LLVMValueRef params
[] = {
1560 ctx
->ac
.i32_0
, /* vindex */
1563 ctx
->ac
.i1false
, /* slc */
1565 ac_build_intrinsic(&ctx
->ac
, store_name
,
1566 ctx
->ac
.voidt
, params
, 6, 0);
1571 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1572 const nir_intrinsic_instr
*instr
)
1575 LLVMValueRef params
[6];
1578 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1579 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1581 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1582 params
[arg_count
++] = ctx
->abi
->load_ssbo(ctx
->abi
,
1583 get_src(ctx
, instr
->src
[0]),
1585 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1586 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1587 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1589 switch (instr
->intrinsic
) {
1590 case nir_intrinsic_ssbo_atomic_add
:
1591 name
= "llvm.amdgcn.buffer.atomic.add";
1593 case nir_intrinsic_ssbo_atomic_imin
:
1594 name
= "llvm.amdgcn.buffer.atomic.smin";
1596 case nir_intrinsic_ssbo_atomic_umin
:
1597 name
= "llvm.amdgcn.buffer.atomic.umin";
1599 case nir_intrinsic_ssbo_atomic_imax
:
1600 name
= "llvm.amdgcn.buffer.atomic.smax";
1602 case nir_intrinsic_ssbo_atomic_umax
:
1603 name
= "llvm.amdgcn.buffer.atomic.umax";
1605 case nir_intrinsic_ssbo_atomic_and
:
1606 name
= "llvm.amdgcn.buffer.atomic.and";
1608 case nir_intrinsic_ssbo_atomic_or
:
1609 name
= "llvm.amdgcn.buffer.atomic.or";
1611 case nir_intrinsic_ssbo_atomic_xor
:
1612 name
= "llvm.amdgcn.buffer.atomic.xor";
1614 case nir_intrinsic_ssbo_atomic_exchange
:
1615 name
= "llvm.amdgcn.buffer.atomic.swap";
1617 case nir_intrinsic_ssbo_atomic_comp_swap
:
1618 name
= "llvm.amdgcn.buffer.atomic.cmpswap";
1624 return ac_build_intrinsic(&ctx
->ac
, name
, ctx
->ac
.i32
, params
, arg_count
, 0);
1627 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
1628 const nir_intrinsic_instr
*instr
)
1630 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1631 int num_components
= instr
->num_components
;
1632 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1633 LLVMValueRef glc
= ctx
->ac
.i1false
;
1635 if (access
& (ACCESS_VOLATILE
| ACCESS_COHERENT
))
1636 glc
= ctx
->ac
.i1true
;
1638 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1639 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1640 get_src(ctx
, instr
->src
[0]), false);
1641 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
1643 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1644 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
1646 LLVMValueRef results
[4];
1647 for (int i
= 0; i
< num_components
;) {
1648 int num_elems
= num_components
- i
;
1649 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
1651 if (num_elems
* elem_size_bytes
> 16)
1652 num_elems
= 16 / elem_size_bytes
;
1653 int load_bytes
= num_elems
* elem_size_bytes
;
1655 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
1658 if (load_bytes
== 2) {
1659 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
1667 const char *load_name
;
1668 LLVMTypeRef data_type
;
1669 switch (load_bytes
) {
1672 load_name
= "llvm.amdgcn.buffer.load.v4f32";
1673 data_type
= ctx
->ac
.v4f32
;
1677 load_name
= "llvm.amdgcn.buffer.load.v2f32";
1678 data_type
= ctx
->ac
.v2f32
;
1681 load_name
= "llvm.amdgcn.buffer.load.f32";
1682 data_type
= ctx
->ac
.f32
;
1685 unreachable("Malformed load buffer.");
1687 LLVMValueRef params
[] = {
1690 LLVMBuildAdd(ctx
->ac
.builder
, offset
, immoffset
, ""),
1694 ret
= ac_build_intrinsic(&ctx
->ac
, load_name
, data_type
, params
, 5, 0);
1697 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
1698 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
1699 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
1701 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
1702 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
1704 for (unsigned j
= 0; j
< num_elems
; j
++) {
1705 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
1710 return ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1713 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
1714 const nir_intrinsic_instr
*instr
)
1717 LLVMValueRef rsrc
= get_src(ctx
, instr
->src
[0]);
1718 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1719 int num_components
= instr
->num_components
;
1721 if (ctx
->abi
->load_ubo
)
1722 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
1724 if (instr
->dest
.ssa
.bit_size
== 64)
1725 num_components
*= 2;
1727 if (instr
->dest
.ssa
.bit_size
== 16) {
1728 LLVMValueRef results
[num_components
];
1729 for (unsigned i
= 0; i
< num_components
; ++i
) {
1730 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
1735 LLVMConstInt(ctx
->ac
.i32
, 2 * i
, 0),
1738 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1740 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
1741 NULL
, 0, false, false, true, true);
1743 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
1746 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
1747 get_def_type(ctx
, &instr
->dest
.ssa
), "");
1751 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
1752 bool vs_in
, unsigned *vertex_index_out
,
1753 LLVMValueRef
*vertex_index_ref
,
1754 unsigned *const_out
, LLVMValueRef
*indir_out
)
1756 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
1757 nir_deref_path path
;
1758 unsigned idx_lvl
= 1;
1760 nir_deref_path_init(&path
, instr
, NULL
);
1762 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
1763 if (vertex_index_ref
) {
1764 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
1765 if (vertex_index_out
)
1766 *vertex_index_out
= 0;
1768 nir_const_value
*v
= nir_src_as_const_value(path
.path
[idx_lvl
]->arr
.index
);
1770 *vertex_index_out
= v
->u32
[0];
1775 uint32_t const_offset
= 0;
1776 LLVMValueRef offset
= NULL
;
1778 if (var
->data
.compact
) {
1779 assert(instr
->deref_type
== nir_deref_type_array
);
1780 nir_const_value
*v
= nir_src_as_const_value(instr
->arr
.index
);
1782 const_offset
= v
->u32
[0];
1786 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
1787 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
1788 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
1789 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
1791 for (unsigned i
= 0; i
< index
; i
++) {
1792 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
1793 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
1795 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
1796 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
1797 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
1798 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
1800 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
1804 unreachable("Uhandled deref type in get_deref_instr_offset");
1808 nir_deref_path_finish(&path
);
1810 if (const_offset
&& offset
)
1811 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
1812 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
1815 *const_out
= const_offset
;
1816 *indir_out
= offset
;
1819 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
1820 nir_intrinsic_instr
*instr
,
1823 LLVMValueRef result
;
1824 LLVMValueRef vertex_index
= NULL
;
1825 LLVMValueRef indir_index
= NULL
;
1826 unsigned const_index
= 0;
1828 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
1830 unsigned location
= var
->data
.location
;
1831 unsigned driver_location
= var
->data
.driver_location
;
1832 const bool is_patch
= var
->data
.patch
;
1833 const bool is_compact
= var
->data
.compact
;
1835 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
1836 false, NULL
, is_patch
? NULL
: &vertex_index
,
1837 &const_index
, &indir_index
);
1839 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1841 LLVMTypeRef src_component_type
;
1842 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
1843 src_component_type
= LLVMGetElementType(dest_type
);
1845 src_component_type
= dest_type
;
1847 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
1848 vertex_index
, indir_index
,
1849 const_index
, location
, driver_location
,
1850 var
->data
.location_frac
,
1851 instr
->num_components
,
1852 is_patch
, is_compact
, load_inputs
);
1853 if (instr
->dest
.ssa
.bit_size
== 16) {
1854 result
= ac_to_integer(&ctx
->ac
, result
);
1855 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
1857 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
1860 static LLVMValueRef
visit_load_var(struct ac_nir_context
*ctx
,
1861 nir_intrinsic_instr
*instr
)
1863 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
1865 LLVMValueRef values
[8];
1867 int ve
= instr
->dest
.ssa
.num_components
;
1869 LLVMValueRef indir_index
;
1871 unsigned const_index
;
1872 unsigned stride
= 4;
1873 int mode
= nir_var_shared
;
1876 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
1877 var
->data
.mode
== nir_var_shader_in
;
1878 if (var
->data
.compact
)
1880 idx
= var
->data
.driver_location
;
1881 comp
= var
->data
.location_frac
;
1882 mode
= var
->data
.mode
;
1884 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
), vs_in
, NULL
, NULL
,
1885 &const_index
, &indir_index
);
1888 if (instr
->dest
.ssa
.bit_size
== 64)
1892 case nir_var_shader_in
:
1893 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
1894 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
1895 return load_tess_varyings(ctx
, instr
, true);
1898 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
1899 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
1900 LLVMValueRef indir_index
;
1901 unsigned const_index
, vertex_index
;
1902 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
1903 false, &vertex_index
, NULL
, &const_index
, &indir_index
);
1905 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
1906 var
->data
.driver_location
,
1907 var
->data
.location_frac
,
1908 instr
->num_components
, vertex_index
, const_index
, type
);
1911 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
1913 unsigned count
= glsl_count_attribute_slots(
1915 ctx
->stage
== MESA_SHADER_VERTEX
);
1917 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
1918 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
1919 stride
, false, true);
1921 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
1925 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
1929 for (unsigned chan
= 0; chan
< ve
; chan
++) {
1931 unsigned count
= glsl_count_attribute_slots(
1934 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
1935 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
1936 stride
, true, true);
1938 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
1942 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
1946 case nir_var_shared
: {
1947 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
1948 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
1949 return LLVMBuildBitCast(ctx
->ac
.builder
, val
,
1950 get_def_type(ctx
, &instr
->dest
.ssa
),
1953 case nir_var_shader_out
:
1954 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
1955 return load_tess_varyings(ctx
, instr
, false);
1958 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
1960 unsigned count
= glsl_count_attribute_slots(
1963 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
1964 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
1965 stride
, true, true);
1967 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
1971 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
1972 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
1978 unreachable("unhandle variable mode");
1980 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
1981 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1985 visit_store_var(struct ac_nir_context
*ctx
,
1986 nir_intrinsic_instr
*instr
)
1988 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
1990 LLVMValueRef temp_ptr
, value
;
1991 int idx
= var
->data
.driver_location
;
1992 unsigned comp
= var
->data
.location_frac
;
1993 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
1994 int writemask
= instr
->const_index
[0];
1995 LLVMValueRef indir_index
;
1996 unsigned const_index
;
1998 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
), false,
1999 NULL
, NULL
, &const_index
, &indir_index
);
2001 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64) {
2003 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2004 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2007 writemask
= widen_mask(writemask
, 2);
2010 writemask
= writemask
<< comp
;
2012 switch (var
->data
.mode
) {
2013 case nir_var_shader_out
:
2015 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2016 LLVMValueRef vertex_index
= NULL
;
2017 LLVMValueRef indir_index
= NULL
;
2018 unsigned const_index
= 0;
2019 const bool is_patch
= var
->data
.patch
;
2021 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2022 false, NULL
, is_patch
? NULL
: &vertex_index
,
2023 &const_index
, &indir_index
);
2025 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2026 vertex_index
, indir_index
,
2027 const_index
, src
, writemask
);
2031 for (unsigned chan
= 0; chan
< 8; chan
++) {
2033 if (!(writemask
& (1 << chan
)))
2036 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2038 if (var
->data
.compact
)
2041 unsigned count
= glsl_count_attribute_slots(
2044 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2045 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2046 stride
, true, true);
2048 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2049 value
, indir_index
, "");
2050 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2051 count
, stride
, tmp_vec
);
2054 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2056 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2061 for (unsigned chan
= 0; chan
< 8; chan
++) {
2062 if (!(writemask
& (1 << chan
)))
2065 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2067 unsigned count
= glsl_count_attribute_slots(
2070 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2071 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2074 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2075 value
, indir_index
, "");
2076 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2079 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2081 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2085 case nir_var_shared
: {
2086 int writemask
= instr
->const_index
[0];
2087 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2088 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2089 if (util_is_power_of_two_nonzero(writemask
)) {
2090 val
= LLVMBuildBitCast(
2091 ctx
->ac
.builder
, val
,
2092 LLVMGetElementType(LLVMTypeOf(address
)), "");
2093 LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2095 for (unsigned chan
= 0; chan
< 4; chan
++) {
2096 if (!(writemask
& (1 << chan
)))
2099 LLVMBuildStructGEP(ctx
->ac
.builder
,
2101 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2103 src
= LLVMBuildBitCast(
2104 ctx
->ac
.builder
, src
,
2105 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2106 LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2116 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2119 case GLSL_SAMPLER_DIM_BUF
:
2121 case GLSL_SAMPLER_DIM_1D
:
2122 return array
? 2 : 1;
2123 case GLSL_SAMPLER_DIM_2D
:
2124 return array
? 3 : 2;
2125 case GLSL_SAMPLER_DIM_MS
:
2126 return array
? 4 : 3;
2127 case GLSL_SAMPLER_DIM_3D
:
2128 case GLSL_SAMPLER_DIM_CUBE
:
2130 case GLSL_SAMPLER_DIM_RECT
:
2131 case GLSL_SAMPLER_DIM_SUBPASS
:
2133 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2142 /* Adjust the sample index according to FMASK.
2144 * For uncompressed MSAA surfaces, FMASK should return 0x76543210,
2145 * which is the identity mapping. Each nibble says which physical sample
2146 * should be fetched to get that sample.
2148 * For example, 0x11111100 means there are only 2 samples stored and
2149 * the second sample covers 3/4 of the pixel. When reading samples 0
2150 * and 1, return physical sample 0 (determined by the first two 0s
2151 * in FMASK), otherwise return physical sample 1.
2153 * The sample index should be adjusted as follows:
2154 * sample_index = (fmask >> (sample_index * 4)) & 0xF;
2156 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2157 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2158 LLVMValueRef coord_z
,
2159 LLVMValueRef sample_index
,
2160 LLVMValueRef fmask_desc_ptr
)
2162 struct ac_image_args args
= {0};
2165 args
.coords
[0] = coord_x
;
2166 args
.coords
[1] = coord_y
;
2168 args
.coords
[2] = coord_z
;
2170 args
.opcode
= ac_image_load
;
2171 args
.dim
= coord_z
? ac_image_2darray
: ac_image_2d
;
2172 args
.resource
= fmask_desc_ptr
;
2174 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2176 res
= ac_build_image_opcode(ctx
, &args
);
2178 res
= ac_to_integer(ctx
, res
);
2179 LLVMValueRef four
= LLVMConstInt(ctx
->i32
, 4, false);
2180 LLVMValueRef F
= LLVMConstInt(ctx
->i32
, 0xf, false);
2182 LLVMValueRef fmask
= LLVMBuildExtractElement(ctx
->builder
,
2186 LLVMValueRef sample_index4
=
2187 LLVMBuildMul(ctx
->builder
, sample_index
, four
, "");
2188 LLVMValueRef shifted_fmask
=
2189 LLVMBuildLShr(ctx
->builder
, fmask
, sample_index4
, "");
2190 LLVMValueRef final_sample
=
2191 LLVMBuildAnd(ctx
->builder
, shifted_fmask
, F
, "");
2193 /* Don't rewrite the sample index if WORD1.DATA_FORMAT of the FMASK
2194 * resource descriptor is 0 (invalid),
2196 LLVMValueRef fmask_desc
=
2197 LLVMBuildBitCast(ctx
->builder
, fmask_desc_ptr
,
2200 LLVMValueRef fmask_word1
=
2201 LLVMBuildExtractElement(ctx
->builder
, fmask_desc
,
2204 LLVMValueRef word1_is_nonzero
=
2205 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
,
2206 fmask_word1
, ctx
->i32_0
, "");
2208 /* Replace the MSAA sample index. */
2210 LLVMBuildSelect(ctx
->builder
, word1_is_nonzero
,
2211 final_sample
, sample_index
, "");
2212 return sample_index
;
2215 static nir_variable
*get_image_variable(const nir_intrinsic_instr
*instr
)
2217 assert(instr
->src
[0].is_ssa
);
2218 return nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
2221 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2222 const nir_intrinsic_instr
*instr
,
2223 enum ac_descriptor_type desc_type
,
2226 return get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
), desc_type
, NULL
, true, write
);
2229 static void get_image_coords(struct ac_nir_context
*ctx
,
2230 const nir_intrinsic_instr
*instr
,
2231 struct ac_image_args
*args
)
2233 const struct glsl_type
*type
= glsl_without_array(get_image_variable(instr
)->type
);
2235 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2236 LLVMValueRef masks
[] = {
2237 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2238 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2240 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2243 enum glsl_sampler_dim dim
= glsl_get_sampler_dim(type
);
2244 bool is_array
= glsl_sampler_type_is_array(type
);
2245 bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2246 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2247 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2248 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2249 bool gfx9_1d
= ctx
->ac
.chip_class
>= GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2250 count
= image_type_to_components_count(dim
, is_array
);
2252 if (is_ms
&& instr
->intrinsic
== nir_intrinsic_image_deref_load
) {
2253 LLVMValueRef fmask_load_address
[3];
2256 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2257 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2259 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2261 fmask_load_address
[2] = NULL
;
2263 for (chan
= 0; chan
< 2; ++chan
)
2264 fmask_load_address
[chan
] =
2265 LLVMBuildAdd(ctx
->ac
.builder
, fmask_load_address
[chan
],
2266 LLVMBuildFPToUI(ctx
->ac
.builder
, ctx
->abi
->frag_pos
[chan
],
2267 ctx
->ac
.i32
, ""), "");
2268 fmask_load_address
[2] = ac_to_integer(&ctx
->ac
, ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)]);
2270 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2271 fmask_load_address
[0],
2272 fmask_load_address
[1],
2273 fmask_load_address
[2],
2275 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2276 AC_DESC_FMASK
, NULL
, false, false));
2278 if (count
== 1 && !gfx9_1d
) {
2279 if (instr
->src
[1].ssa
->num_components
)
2280 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2282 args
->coords
[0] = src0
;
2287 for (chan
= 0; chan
< count
; ++chan
) {
2288 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2291 for (chan
= 0; chan
< 2; ++chan
) {
2292 args
->coords
[chan
] = LLVMBuildAdd(
2293 ctx
->ac
.builder
, args
->coords
[chan
],
2295 ctx
->ac
.builder
, ctx
->abi
->frag_pos
[chan
],
2296 ctx
->ac
.i32
, ""), "");
2298 args
->coords
[2] = ac_to_integer(&ctx
->ac
,
2299 ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)]);
2305 args
->coords
[2] = args
->coords
[1];
2306 args
->coords
[1] = ctx
->ac
.i32_0
;
2308 args
->coords
[1] = ctx
->ac
.i32_0
;
2313 args
->coords
[count
] = sample_index
;
2319 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2320 const nir_intrinsic_instr
*instr
, bool write
)
2322 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, write
);
2323 if (ctx
->abi
->gfx9_stride_size_workaround
) {
2324 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2325 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2326 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2328 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2329 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2330 elem_count
, stride
, "");
2332 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2333 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2338 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2339 const nir_intrinsic_instr
*instr
)
2342 const nir_variable
*var
= get_image_variable(instr
);
2343 const struct glsl_type
*type
= var
->type
;
2345 type
= glsl_without_array(type
);
2347 const enum glsl_sampler_dim dim
= glsl_get_sampler_dim(type
);
2348 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2349 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2350 unsigned num_channels
= util_last_bit(mask
);
2351 LLVMValueRef rsrc
, vindex
;
2353 rsrc
= get_image_buffer_descriptor(ctx
, instr
, false);
2354 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2357 /* TODO: set "glc" and "can_speculate" when OpenGL needs it. */
2358 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2359 ctx
->ac
.i32_0
, num_channels
,
2361 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2363 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2364 res
= ac_to_integer(&ctx
->ac
, res
);
2366 struct ac_image_args args
= {};
2367 args
.opcode
= ac_image_load
;
2368 get_image_coords(ctx
, instr
, &args
);
2369 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2370 args
.dim
= get_ac_image_dim(&ctx
->ac
, glsl_get_sampler_dim(type
),
2371 glsl_sampler_type_is_array(type
));
2373 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2374 if (var
->data
.image
.access
& (ACCESS_VOLATILE
| ACCESS_COHERENT
))
2375 args
.cache_policy
|= ac_glc
;
2377 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2379 return ac_to_integer(&ctx
->ac
, res
);
2382 static void visit_image_store(struct ac_nir_context
*ctx
,
2383 nir_intrinsic_instr
*instr
)
2385 LLVMValueRef params
[8];
2386 const nir_variable
*var
= get_image_variable(instr
);
2387 const struct glsl_type
*type
= glsl_without_array(var
->type
);
2388 const enum glsl_sampler_dim dim
= glsl_get_sampler_dim(type
);
2389 LLVMValueRef glc
= ctx
->ac
.i1false
;
2390 bool force_glc
= ctx
->ac
.chip_class
== SI
;
2392 glc
= ctx
->ac
.i1true
;
2394 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2396 const char *types
[] = { "f32", "v2f32", "v4f32" };
2397 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, true);
2398 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2399 unsigned src_channels
= ac_get_llvm_num_components(src
);
2401 if (src_channels
== 3)
2402 src
= ac_build_expand(&ctx
->ac
, src
, 3, 4);
2404 params
[0] = src
; /* data */
2406 params
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2407 ctx
->ac
.i32_0
, ""); /* vindex */
2408 params
[3] = ctx
->ac
.i32_0
; /* voffset */
2409 snprintf(name
, sizeof(name
), "%s.%s",
2410 HAVE_LLVM
>= 0x800 ? "llvm.amdgcn.struct.buffer.store.format"
2411 : "llvm.amdgcn.buffer.store.format",
2412 types
[CLAMP(src_channels
, 1, 3) - 1]);
2414 if (HAVE_LLVM
>= 0x800) {
2415 params
[4] = ctx
->ac
.i32_0
; /* soffset */
2416 params
[5] = glc
? ctx
->ac
.i32_1
: ctx
->ac
.i32_0
;
2418 params
[4] = glc
; /* glc */
2419 params
[5] = ctx
->ac
.i1false
; /* slc */
2421 ac_build_intrinsic(&ctx
->ac
, name
, ctx
->ac
.voidt
, params
, 6, 0);
2423 struct ac_image_args args
= {};
2424 args
.opcode
= ac_image_store
;
2425 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2426 get_image_coords(ctx
, instr
, &args
);
2427 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2428 args
.dim
= get_ac_image_dim(&ctx
->ac
, glsl_get_sampler_dim(type
),
2429 glsl_sampler_type_is_array(type
));
2431 if (force_glc
|| (var
->data
.image
.access
& (ACCESS_VOLATILE
| ACCESS_COHERENT
)))
2432 args
.cache_policy
|= ac_glc
;
2434 ac_build_image_opcode(&ctx
->ac
, &args
);
2439 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2440 const nir_intrinsic_instr
*instr
)
2442 LLVMValueRef params
[7];
2443 int param_count
= 0;
2444 const nir_variable
*var
= get_image_variable(instr
);
2446 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
;
2447 const char *atomic_name
;
2448 char intrinsic_name
[64];
2449 enum ac_atomic_op atomic_subop
;
2450 const struct glsl_type
*type
= glsl_without_array(var
->type
);
2451 MAYBE_UNUSED
int length
;
2453 bool is_unsigned
= glsl_get_sampler_result_type(type
) == GLSL_TYPE_UINT
;
2455 switch (instr
->intrinsic
) {
2456 case nir_intrinsic_image_deref_atomic_add
:
2457 atomic_name
= "add";
2458 atomic_subop
= ac_atomic_add
;
2460 case nir_intrinsic_image_deref_atomic_min
:
2461 atomic_name
= is_unsigned
? "umin" : "smin";
2462 atomic_subop
= is_unsigned
? ac_atomic_umin
: ac_atomic_smin
;
2464 case nir_intrinsic_image_deref_atomic_max
:
2465 atomic_name
= is_unsigned
? "umax" : "smax";
2466 atomic_subop
= is_unsigned
? ac_atomic_umax
: ac_atomic_smax
;
2468 case nir_intrinsic_image_deref_atomic_and
:
2469 atomic_name
= "and";
2470 atomic_subop
= ac_atomic_and
;
2472 case nir_intrinsic_image_deref_atomic_or
:
2474 atomic_subop
= ac_atomic_or
;
2476 case nir_intrinsic_image_deref_atomic_xor
:
2477 atomic_name
= "xor";
2478 atomic_subop
= ac_atomic_xor
;
2480 case nir_intrinsic_image_deref_atomic_exchange
:
2481 atomic_name
= "swap";
2482 atomic_subop
= ac_atomic_swap
;
2484 case nir_intrinsic_image_deref_atomic_comp_swap
:
2485 atomic_name
= "cmpswap";
2486 atomic_subop
= 0; /* not used */
2493 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
2494 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
2496 if (glsl_get_sampler_dim(type
) == GLSL_SAMPLER_DIM_BUF
) {
2497 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, true);
2498 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2499 ctx
->ac
.i32_0
, ""); /* vindex */
2500 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
2501 if (HAVE_LLVM
>= 0x800) {
2502 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
2503 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
2505 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2506 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
2508 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
2510 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2511 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
2514 assert(length
< sizeof(intrinsic_name
));
2515 return ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
2516 params
, param_count
, 0);
2518 struct ac_image_args args
= {};
2519 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
2520 args
.atomic
= atomic_subop
;
2521 args
.data
[0] = params
[0];
2523 args
.data
[1] = params
[1];
2524 get_image_coords(ctx
, instr
, &args
);
2525 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2526 args
.dim
= get_ac_image_dim(&ctx
->ac
, glsl_get_sampler_dim(type
),
2527 glsl_sampler_type_is_array(type
));
2529 return ac_build_image_opcode(&ctx
->ac
, &args
);
2533 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
2534 const nir_intrinsic_instr
*instr
)
2536 const nir_variable
*var
= get_image_variable(instr
);
2537 const struct glsl_type
*type
= glsl_without_array(var
->type
);
2539 struct ac_image_args args
= { 0 };
2540 args
.dim
= get_ac_sampler_dim(&ctx
->ac
, glsl_get_sampler_dim(type
),
2541 glsl_sampler_type_is_array(type
));
2543 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2544 args
.opcode
= ac_image_get_resinfo
;
2545 args
.lod
= ctx
->ac
.i32_0
;
2546 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2548 return ac_build_image_opcode(&ctx
->ac
, &args
);
2551 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
2552 const nir_intrinsic_instr
*instr
)
2555 const nir_variable
*var
= get_image_variable(instr
);
2556 const struct glsl_type
*type
= glsl_without_array(var
->type
);
2558 if (glsl_get_sampler_dim(type
) == GLSL_SAMPLER_DIM_BUF
)
2559 return get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, false), true);
2561 struct ac_image_args args
= { 0 };
2563 args
.dim
= get_ac_image_dim(&ctx
->ac
, glsl_get_sampler_dim(type
),
2564 glsl_sampler_type_is_array(type
));
2566 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2567 args
.opcode
= ac_image_get_resinfo
;
2568 args
.lod
= ctx
->ac
.i32_0
;
2569 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2571 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2573 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
2575 if (glsl_get_sampler_dim(type
) == GLSL_SAMPLER_DIM_CUBE
&&
2576 glsl_sampler_type_is_array(type
)) {
2577 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
2578 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2579 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
2580 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
2582 if (ctx
->ac
.chip_class
>= GFX9
&&
2583 glsl_get_sampler_dim(type
) == GLSL_SAMPLER_DIM_1D
&&
2584 glsl_sampler_type_is_array(type
)) {
2585 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2586 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
2593 static void emit_membar(struct ac_llvm_context
*ac
,
2594 const nir_intrinsic_instr
*instr
)
2596 unsigned waitcnt
= NOOP_WAITCNT
;
2598 switch (instr
->intrinsic
) {
2599 case nir_intrinsic_memory_barrier
:
2600 case nir_intrinsic_group_memory_barrier
:
2601 waitcnt
&= VM_CNT
& LGKM_CNT
;
2603 case nir_intrinsic_memory_barrier_atomic_counter
:
2604 case nir_intrinsic_memory_barrier_buffer
:
2605 case nir_intrinsic_memory_barrier_image
:
2608 case nir_intrinsic_memory_barrier_shared
:
2609 waitcnt
&= LGKM_CNT
;
2614 if (waitcnt
!= NOOP_WAITCNT
)
2615 ac_build_waitcnt(ac
, waitcnt
);
2618 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
2620 /* SI only (thanks to a hw bug workaround):
2621 * The real barrier instruction isn’t needed, because an entire patch
2622 * always fits into a single wave.
2624 if (ac
->chip_class
== SI
&& stage
== MESA_SHADER_TESS_CTRL
) {
2625 ac_build_waitcnt(ac
, LGKM_CNT
& VM_CNT
);
2628 ac_build_s_barrier(ac
);
2631 static void emit_discard(struct ac_nir_context
*ctx
,
2632 const nir_intrinsic_instr
*instr
)
2636 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
2637 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2638 get_src(ctx
, instr
->src
[0]),
2641 assert(instr
->intrinsic
== nir_intrinsic_discard
);
2642 cond
= ctx
->ac
.i1false
;
2645 ctx
->abi
->emit_kill(ctx
->abi
, cond
);
2649 visit_load_helper_invocation(struct ac_nir_context
*ctx
)
2651 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
,
2652 "llvm.amdgcn.ps.live",
2653 ctx
->ac
.i1
, NULL
, 0,
2654 AC_FUNC_ATTR_READNONE
);
2655 result
= LLVMBuildNot(ctx
->ac
.builder
, result
, "");
2656 return LLVMBuildSExt(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
2660 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
2662 LLVMValueRef result
;
2663 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
2664 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2665 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2667 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
2671 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
2673 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2674 LLVMValueRef result
;
2675 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2676 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2677 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
2679 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
2684 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
2686 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2687 return LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2688 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
2690 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
2695 visit_first_invocation(struct ac_nir_context
*ctx
)
2697 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
2699 /* The second argument is whether cttz(0) should be defined, but we do not care. */
2700 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
2701 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
,
2703 ctx
->ac
.i64
, args
, 2,
2704 AC_FUNC_ATTR_NOUNWIND
|
2705 AC_FUNC_ATTR_READNONE
);
2707 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
2711 visit_load_shared(struct ac_nir_context
*ctx
,
2712 const nir_intrinsic_instr
*instr
)
2714 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
2716 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
2718 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
2719 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2720 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
2721 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
2724 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
2725 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2729 visit_store_shared(struct ac_nir_context
*ctx
,
2730 const nir_intrinsic_instr
*instr
)
2732 LLVMValueRef derived_ptr
, data
,index
;
2733 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2735 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1]);
2736 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
2738 int writemask
= nir_intrinsic_write_mask(instr
);
2739 for (int chan
= 0; chan
< 4; chan
++) {
2740 if (!(writemask
& (1 << chan
))) {
2743 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2744 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2745 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
2746 LLVMBuildStore(builder
, data
, derived_ptr
);
2750 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
2751 const nir_intrinsic_instr
*instr
,
2752 LLVMValueRef ptr
, int src_idx
)
2754 LLVMValueRef result
;
2755 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
2757 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
2758 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
2759 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
2760 result
= LLVMBuildAtomicCmpXchg(ctx
->ac
.builder
,
2762 LLVMAtomicOrderingSequentiallyConsistent
,
2763 LLVMAtomicOrderingSequentiallyConsistent
,
2765 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
2767 LLVMAtomicRMWBinOp op
;
2768 switch (instr
->intrinsic
) {
2769 case nir_intrinsic_shared_atomic_add
:
2770 case nir_intrinsic_deref_atomic_add
:
2771 op
= LLVMAtomicRMWBinOpAdd
;
2773 case nir_intrinsic_shared_atomic_umin
:
2774 case nir_intrinsic_deref_atomic_umin
:
2775 op
= LLVMAtomicRMWBinOpUMin
;
2777 case nir_intrinsic_shared_atomic_umax
:
2778 case nir_intrinsic_deref_atomic_umax
:
2779 op
= LLVMAtomicRMWBinOpUMax
;
2781 case nir_intrinsic_shared_atomic_imin
:
2782 case nir_intrinsic_deref_atomic_imin
:
2783 op
= LLVMAtomicRMWBinOpMin
;
2785 case nir_intrinsic_shared_atomic_imax
:
2786 case nir_intrinsic_deref_atomic_imax
:
2787 op
= LLVMAtomicRMWBinOpMax
;
2789 case nir_intrinsic_shared_atomic_and
:
2790 case nir_intrinsic_deref_atomic_and
:
2791 op
= LLVMAtomicRMWBinOpAnd
;
2793 case nir_intrinsic_shared_atomic_or
:
2794 case nir_intrinsic_deref_atomic_or
:
2795 op
= LLVMAtomicRMWBinOpOr
;
2797 case nir_intrinsic_shared_atomic_xor
:
2798 case nir_intrinsic_deref_atomic_xor
:
2799 op
= LLVMAtomicRMWBinOpXor
;
2801 case nir_intrinsic_shared_atomic_exchange
:
2802 case nir_intrinsic_deref_atomic_exchange
:
2803 op
= LLVMAtomicRMWBinOpXchg
;
2809 result
= LLVMBuildAtomicRMW(ctx
->ac
.builder
, op
, ptr
, ac_to_integer(&ctx
->ac
, src
),
2810 LLVMAtomicOrderingSequentiallyConsistent
,
2816 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
2818 LLVMValueRef values
[2];
2819 LLVMValueRef pos
[2];
2821 pos
[0] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[0]);
2822 pos
[1] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[1]);
2824 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
2825 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
2826 return ac_build_gather_values(&ctx
->ac
, values
, 2);
2829 static LLVMValueRef
visit_interp(struct ac_nir_context
*ctx
,
2830 const nir_intrinsic_instr
*instr
)
2832 LLVMValueRef result
[4];
2833 LLVMValueRef interp_param
, attr_number
;
2836 LLVMValueRef src_c0
= NULL
;
2837 LLVMValueRef src_c1
= NULL
;
2838 LLVMValueRef src0
= NULL
;
2840 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
2841 int input_index
= var
->data
.location
- VARYING_SLOT_VAR0
;
2842 switch (instr
->intrinsic
) {
2843 case nir_intrinsic_interp_deref_at_centroid
:
2844 location
= INTERP_CENTROID
;
2846 case nir_intrinsic_interp_deref_at_sample
:
2847 case nir_intrinsic_interp_deref_at_offset
:
2848 location
= INTERP_CENTER
;
2849 src0
= get_src(ctx
, instr
->src
[1]);
2855 if (instr
->intrinsic
== nir_intrinsic_interp_deref_at_offset
) {
2856 src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, ctx
->ac
.i32_0
, ""));
2857 src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, ctx
->ac
.i32_1
, ""));
2858 } else if (instr
->intrinsic
== nir_intrinsic_interp_deref_at_sample
) {
2859 LLVMValueRef sample_position
;
2860 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
2862 /* fetch sample ID */
2863 sample_position
= ctx
->abi
->load_sample_position(ctx
->abi
, src0
);
2865 src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
, ctx
->ac
.i32_0
, "");
2866 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
2867 src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
, ctx
->ac
.i32_1
, "");
2868 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
2870 interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, var
->data
.interpolation
, location
);
2871 attr_number
= LLVMConstInt(ctx
->ac
.i32
, input_index
, false);
2873 if (location
== INTERP_CENTER
) {
2874 LLVMValueRef ij_out
[2];
2875 LLVMValueRef ddxy_out
= emit_ddxy_interp(ctx
, interp_param
);
2878 * take the I then J parameters, and the DDX/Y for it, and
2879 * calculate the IJ inputs for the interpolator.
2880 * temp1 = ddx * offset/sample.x + I;
2881 * interp_param.I = ddy * offset/sample.y + temp1;
2882 * temp1 = ddx * offset/sample.x + J;
2883 * interp_param.J = ddy * offset/sample.y + temp1;
2885 for (unsigned i
= 0; i
< 2; i
++) {
2886 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
2887 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
2888 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2889 ddxy_out
, ix_ll
, "");
2890 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2891 ddxy_out
, iy_ll
, "");
2892 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2893 interp_param
, ix_ll
, "");
2894 LLVMValueRef temp1
, temp2
;
2896 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
2899 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
2900 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
2902 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
2903 temp2
, ctx
->ac
.i32
, "");
2905 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
2909 for (chan
= 0; chan
< 4; chan
++) {
2910 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, chan
, false);
2913 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
,
2914 interp_param
, ctx
->ac
.v2f32
, "");
2915 LLVMValueRef i
= LLVMBuildExtractElement(
2916 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_0
, "");
2917 LLVMValueRef j
= LLVMBuildExtractElement(
2918 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_1
, "");
2920 result
[chan
] = ac_build_fs_interp(&ctx
->ac
,
2921 llvm_chan
, attr_number
,
2922 ctx
->abi
->prim_mask
, i
, j
);
2924 result
[chan
] = ac_build_fs_interp_mov(&ctx
->ac
,
2925 LLVMConstInt(ctx
->ac
.i32
, 2, false),
2926 llvm_chan
, attr_number
,
2927 ctx
->abi
->prim_mask
);
2930 return ac_build_varying_gather_values(&ctx
->ac
, result
, instr
->num_components
,
2931 var
->data
.location_frac
);
2934 static void visit_intrinsic(struct ac_nir_context
*ctx
,
2935 nir_intrinsic_instr
*instr
)
2937 LLVMValueRef result
= NULL
;
2939 switch (instr
->intrinsic
) {
2940 case nir_intrinsic_ballot
:
2941 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
2943 case nir_intrinsic_read_invocation
:
2944 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
2945 get_src(ctx
, instr
->src
[1]));
2947 case nir_intrinsic_read_first_invocation
:
2948 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
2950 case nir_intrinsic_load_subgroup_invocation
:
2951 result
= ac_get_thread_id(&ctx
->ac
);
2953 case nir_intrinsic_load_work_group_id
: {
2954 LLVMValueRef values
[3];
2956 for (int i
= 0; i
< 3; i
++) {
2957 values
[i
] = ctx
->abi
->workgroup_ids
[i
] ?
2958 ctx
->abi
->workgroup_ids
[i
] : ctx
->ac
.i32_0
;
2961 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
2964 case nir_intrinsic_load_base_vertex
:
2965 case nir_intrinsic_load_first_vertex
:
2966 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
2968 case nir_intrinsic_load_local_group_size
:
2969 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
2971 case nir_intrinsic_load_vertex_id
:
2972 result
= LLVMBuildAdd(ctx
->ac
.builder
, ctx
->abi
->vertex_id
,
2973 ctx
->abi
->base_vertex
, "");
2975 case nir_intrinsic_load_vertex_id_zero_base
: {
2976 result
= ctx
->abi
->vertex_id
;
2979 case nir_intrinsic_load_local_invocation_id
: {
2980 result
= ctx
->abi
->local_invocation_ids
;
2983 case nir_intrinsic_load_base_instance
:
2984 result
= ctx
->abi
->start_instance
;
2986 case nir_intrinsic_load_draw_id
:
2987 result
= ctx
->abi
->draw_id
;
2989 case nir_intrinsic_load_view_index
:
2990 result
= ctx
->abi
->view_index
;
2992 case nir_intrinsic_load_invocation_id
:
2993 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
)
2994 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->tcs_rel_ids
, 8, 5);
2996 result
= ctx
->abi
->gs_invocation_id
;
2998 case nir_intrinsic_load_primitive_id
:
2999 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3000 result
= ctx
->abi
->gs_prim_id
;
3001 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3002 result
= ctx
->abi
->tcs_patch_id
;
3003 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3004 result
= ctx
->abi
->tes_patch_id
;
3006 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3008 case nir_intrinsic_load_sample_id
:
3009 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->ancillary
, 8, 4);
3011 case nir_intrinsic_load_sample_pos
:
3012 result
= load_sample_pos(ctx
);
3014 case nir_intrinsic_load_sample_mask_in
:
3015 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3017 case nir_intrinsic_load_frag_coord
: {
3018 LLVMValueRef values
[4] = {
3019 ctx
->abi
->frag_pos
[0],
3020 ctx
->abi
->frag_pos
[1],
3021 ctx
->abi
->frag_pos
[2],
3022 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
, ctx
->abi
->frag_pos
[3])
3024 result
= ac_build_gather_values(&ctx
->ac
, values
, 4);
3027 case nir_intrinsic_load_front_face
:
3028 result
= ctx
->abi
->front_face
;
3030 case nir_intrinsic_load_helper_invocation
:
3031 result
= visit_load_helper_invocation(ctx
);
3033 case nir_intrinsic_load_instance_id
:
3034 result
= ctx
->abi
->instance_id
;
3036 case nir_intrinsic_load_num_work_groups
:
3037 result
= ctx
->abi
->num_work_groups
;
3039 case nir_intrinsic_load_local_invocation_index
:
3040 result
= visit_load_local_invocation_index(ctx
);
3042 case nir_intrinsic_load_subgroup_id
:
3043 result
= visit_load_subgroup_id(ctx
);
3045 case nir_intrinsic_load_num_subgroups
:
3046 result
= visit_load_num_subgroups(ctx
);
3048 case nir_intrinsic_first_invocation
:
3049 result
= visit_first_invocation(ctx
);
3051 case nir_intrinsic_load_push_constant
:
3052 result
= visit_load_push_constant(ctx
, instr
);
3054 case nir_intrinsic_vulkan_resource_index
: {
3055 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3056 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3057 unsigned binding
= nir_intrinsic_binding(instr
);
3059 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3063 case nir_intrinsic_vulkan_resource_reindex
:
3064 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3066 case nir_intrinsic_store_ssbo
:
3067 visit_store_ssbo(ctx
, instr
);
3069 case nir_intrinsic_load_ssbo
:
3070 result
= visit_load_buffer(ctx
, instr
);
3072 case nir_intrinsic_ssbo_atomic_add
:
3073 case nir_intrinsic_ssbo_atomic_imin
:
3074 case nir_intrinsic_ssbo_atomic_umin
:
3075 case nir_intrinsic_ssbo_atomic_imax
:
3076 case nir_intrinsic_ssbo_atomic_umax
:
3077 case nir_intrinsic_ssbo_atomic_and
:
3078 case nir_intrinsic_ssbo_atomic_or
:
3079 case nir_intrinsic_ssbo_atomic_xor
:
3080 case nir_intrinsic_ssbo_atomic_exchange
:
3081 case nir_intrinsic_ssbo_atomic_comp_swap
:
3082 result
= visit_atomic_ssbo(ctx
, instr
);
3084 case nir_intrinsic_load_ubo
:
3085 result
= visit_load_ubo_buffer(ctx
, instr
);
3087 case nir_intrinsic_get_buffer_size
:
3088 result
= visit_get_buffer_size(ctx
, instr
);
3090 case nir_intrinsic_load_deref
:
3091 result
= visit_load_var(ctx
, instr
);
3093 case nir_intrinsic_store_deref
:
3094 visit_store_var(ctx
, instr
);
3096 case nir_intrinsic_load_shared
:
3097 result
= visit_load_shared(ctx
, instr
);
3099 case nir_intrinsic_store_shared
:
3100 visit_store_shared(ctx
, instr
);
3102 case nir_intrinsic_image_deref_samples
:
3103 result
= visit_image_samples(ctx
, instr
);
3105 case nir_intrinsic_image_deref_load
:
3106 result
= visit_image_load(ctx
, instr
);
3108 case nir_intrinsic_image_deref_store
:
3109 visit_image_store(ctx
, instr
);
3111 case nir_intrinsic_image_deref_atomic_add
:
3112 case nir_intrinsic_image_deref_atomic_min
:
3113 case nir_intrinsic_image_deref_atomic_max
:
3114 case nir_intrinsic_image_deref_atomic_and
:
3115 case nir_intrinsic_image_deref_atomic_or
:
3116 case nir_intrinsic_image_deref_atomic_xor
:
3117 case nir_intrinsic_image_deref_atomic_exchange
:
3118 case nir_intrinsic_image_deref_atomic_comp_swap
:
3119 result
= visit_image_atomic(ctx
, instr
);
3121 case nir_intrinsic_image_deref_size
:
3122 result
= visit_image_size(ctx
, instr
);
3124 case nir_intrinsic_shader_clock
:
3125 result
= ac_build_shader_clock(&ctx
->ac
);
3127 case nir_intrinsic_discard
:
3128 case nir_intrinsic_discard_if
:
3129 emit_discard(ctx
, instr
);
3131 case nir_intrinsic_memory_barrier
:
3132 case nir_intrinsic_group_memory_barrier
:
3133 case nir_intrinsic_memory_barrier_atomic_counter
:
3134 case nir_intrinsic_memory_barrier_buffer
:
3135 case nir_intrinsic_memory_barrier_image
:
3136 case nir_intrinsic_memory_barrier_shared
:
3137 emit_membar(&ctx
->ac
, instr
);
3139 case nir_intrinsic_barrier
:
3140 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
3142 case nir_intrinsic_shared_atomic_add
:
3143 case nir_intrinsic_shared_atomic_imin
:
3144 case nir_intrinsic_shared_atomic_umin
:
3145 case nir_intrinsic_shared_atomic_imax
:
3146 case nir_intrinsic_shared_atomic_umax
:
3147 case nir_intrinsic_shared_atomic_and
:
3148 case nir_intrinsic_shared_atomic_or
:
3149 case nir_intrinsic_shared_atomic_xor
:
3150 case nir_intrinsic_shared_atomic_exchange
:
3151 case nir_intrinsic_shared_atomic_comp_swap
: {
3152 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
3153 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3156 case nir_intrinsic_deref_atomic_add
:
3157 case nir_intrinsic_deref_atomic_imin
:
3158 case nir_intrinsic_deref_atomic_umin
:
3159 case nir_intrinsic_deref_atomic_imax
:
3160 case nir_intrinsic_deref_atomic_umax
:
3161 case nir_intrinsic_deref_atomic_and
:
3162 case nir_intrinsic_deref_atomic_or
:
3163 case nir_intrinsic_deref_atomic_xor
:
3164 case nir_intrinsic_deref_atomic_exchange
:
3165 case nir_intrinsic_deref_atomic_comp_swap
: {
3166 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
3167 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3170 case nir_intrinsic_interp_deref_at_centroid
:
3171 case nir_intrinsic_interp_deref_at_sample
:
3172 case nir_intrinsic_interp_deref_at_offset
:
3173 result
= visit_interp(ctx
, instr
);
3175 case nir_intrinsic_emit_vertex
:
3176 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
3178 case nir_intrinsic_end_primitive
:
3179 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
3181 case nir_intrinsic_load_tess_coord
:
3182 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
3184 case nir_intrinsic_load_tess_level_outer
:
3185 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
);
3187 case nir_intrinsic_load_tess_level_inner
:
3188 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
);
3190 case nir_intrinsic_load_patch_vertices_in
:
3191 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
3193 case nir_intrinsic_vote_all
: {
3194 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3195 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3198 case nir_intrinsic_vote_any
: {
3199 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3200 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3203 case nir_intrinsic_shuffle
:
3204 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3205 get_src(ctx
, instr
->src
[1]));
3207 case nir_intrinsic_reduce
:
3208 result
= ac_build_reduce(&ctx
->ac
,
3209 get_src(ctx
, instr
->src
[0]),
3210 instr
->const_index
[0],
3211 instr
->const_index
[1]);
3213 case nir_intrinsic_inclusive_scan
:
3214 result
= ac_build_inclusive_scan(&ctx
->ac
,
3215 get_src(ctx
, instr
->src
[0]),
3216 instr
->const_index
[0]);
3218 case nir_intrinsic_exclusive_scan
:
3219 result
= ac_build_exclusive_scan(&ctx
->ac
,
3220 get_src(ctx
, instr
->src
[0]),
3221 instr
->const_index
[0]);
3223 case nir_intrinsic_quad_broadcast
: {
3224 unsigned lane
= nir_src_as_const_value(instr
->src
[1])->u32
[0];
3225 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3226 lane
, lane
, lane
, lane
);
3229 case nir_intrinsic_quad_swap_horizontal
:
3230 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
3232 case nir_intrinsic_quad_swap_vertical
:
3233 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
3235 case nir_intrinsic_quad_swap_diagonal
:
3236 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
3239 fprintf(stderr
, "Unknown intrinsic: ");
3240 nir_print_instr(&instr
->instr
, stderr
);
3241 fprintf(stderr
, "\n");
3245 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3249 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
3250 nir_deref_instr
*deref_instr
,
3251 enum ac_descriptor_type desc_type
,
3252 const nir_tex_instr
*tex_instr
,
3253 bool image
, bool write
)
3255 LLVMValueRef index
= NULL
;
3256 unsigned constant_index
= 0;
3257 unsigned descriptor_set
;
3258 unsigned base_index
;
3259 bool bindless
= false;
3262 assert(tex_instr
&& !image
);
3264 base_index
= tex_instr
->sampler_index
;
3266 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3267 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
3271 assert(deref_instr
->deref_type
== nir_deref_type_array
);
3272 nir_const_value
*const_value
= nir_src_as_const_value(deref_instr
->arr
.index
);
3274 constant_index
+= array_size
* const_value
->u32
[0];
3276 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3278 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3279 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
3284 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
3287 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3289 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
3290 base_index
= deref_instr
->var
->data
.binding
;
3293 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
3296 constant_index
, index
,
3297 desc_type
, image
, write
, bindless
);
3300 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
3303 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
3304 * filtering manually. The driver sets img7 to a mask clearing
3305 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
3306 * s_and_b32 samp0, samp0, img7
3309 * The ANISO_OVERRIDE sampler field enables this fix in TA.
3311 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
3312 LLVMValueRef res
, LLVMValueRef samp
)
3314 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3315 LLVMValueRef img7
, samp0
;
3317 if (ctx
->ac
.chip_class
>= VI
)
3320 img7
= LLVMBuildExtractElement(builder
, res
,
3321 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
3322 samp0
= LLVMBuildExtractElement(builder
, samp
,
3323 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3324 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
3325 return LLVMBuildInsertElement(builder
, samp
, samp0
,
3326 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3329 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
3330 nir_tex_instr
*instr
,
3331 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
3332 LLVMValueRef
*fmask_ptr
)
3334 nir_deref_instr
*texture_deref_instr
= NULL
;
3335 nir_deref_instr
*sampler_deref_instr
= NULL
;
3337 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3338 switch (instr
->src
[i
].src_type
) {
3339 case nir_tex_src_texture_deref
:
3340 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3342 case nir_tex_src_sampler_deref
:
3343 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3350 if (!sampler_deref_instr
)
3351 sampler_deref_instr
= texture_deref_instr
;
3353 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
)
3354 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_BUFFER
, instr
, false, false);
3356 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_IMAGE
, instr
, false, false);
3358 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, instr
, false, false);
3359 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
3360 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
3362 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
3363 instr
->op
== nir_texop_samples_identical
))
3364 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
, instr
, false, false);
3367 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
3370 coord
= ac_to_float(ctx
, coord
);
3371 coord
= ac_build_round(ctx
, coord
);
3372 coord
= ac_to_integer(ctx
, coord
);
3376 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
3378 LLVMValueRef result
= NULL
;
3379 struct ac_image_args args
= { 0 };
3380 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
3381 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
3382 unsigned offset_src
= 0;
3384 tex_fetch_ptrs(ctx
, instr
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
3386 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3387 switch (instr
->src
[i
].src_type
) {
3388 case nir_tex_src_coord
: {
3389 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
3390 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
3391 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
3394 case nir_tex_src_projector
:
3396 case nir_tex_src_comparator
:
3397 if (instr
->is_shadow
)
3398 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
3400 case nir_tex_src_offset
:
3401 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
3404 case nir_tex_src_bias
:
3405 if (instr
->op
== nir_texop_txb
)
3406 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
3408 case nir_tex_src_lod
: {
3409 nir_const_value
*val
= nir_src_as_const_value(instr
->src
[i
].src
);
3411 if (val
&& val
->i32
[0] == 0)
3412 args
.level_zero
= true;
3414 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
3417 case nir_tex_src_ms_index
:
3418 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
3420 case nir_tex_src_ms_mcs
:
3422 case nir_tex_src_ddx
:
3423 ddx
= get_src(ctx
, instr
->src
[i
].src
);
3425 case nir_tex_src_ddy
:
3426 ddy
= get_src(ctx
, instr
->src
[i
].src
);
3428 case nir_tex_src_texture_offset
:
3429 case nir_tex_src_sampler_offset
:
3430 case nir_tex_src_plane
:
3436 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
3437 result
= get_buffer_size(ctx
, args
.resource
, true);
3441 if (instr
->op
== nir_texop_texture_samples
) {
3442 LLVMValueRef res
, samples
, is_msaa
;
3443 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
3444 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
3445 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
3446 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
3447 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
3448 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
3449 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
3450 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
3451 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
3453 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
3454 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
3455 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
3456 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
3457 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
3459 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
3465 if (args
.offset
&& instr
->op
!= nir_texop_txf
) {
3466 LLVMValueRef offset
[3], pack
;
3467 for (unsigned chan
= 0; chan
< 3; ++chan
)
3468 offset
[chan
] = ctx
->ac
.i32_0
;
3470 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
3471 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
3472 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
3473 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
3474 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
3476 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
3477 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
3479 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
3480 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
3484 /* TC-compatible HTILE on radeonsi promotes Z16 and Z24 to Z32_FLOAT,
3485 * so the depth comparison value isn't clamped for Z16 and
3486 * Z24 anymore. Do it manually here.
3488 * It's unnecessary if the original texture format was
3489 * Z32_FLOAT, but we don't know that here.
3491 if (args
.compare
&& ctx
->ac
.chip_class
== VI
&& ctx
->abi
->clamp_shadow_reference
)
3492 args
.compare
= ac_build_clamp(&ctx
->ac
, ac_to_float(&ctx
->ac
, args
.compare
));
3494 /* pack derivatives */
3496 int num_src_deriv_channels
, num_dest_deriv_channels
;
3497 switch (instr
->sampler_dim
) {
3498 case GLSL_SAMPLER_DIM_3D
:
3499 case GLSL_SAMPLER_DIM_CUBE
:
3500 num_src_deriv_channels
= 3;
3501 num_dest_deriv_channels
= 3;
3503 case GLSL_SAMPLER_DIM_2D
:
3505 num_src_deriv_channels
= 2;
3506 num_dest_deriv_channels
= 2;
3508 case GLSL_SAMPLER_DIM_1D
:
3509 num_src_deriv_channels
= 1;
3510 if (ctx
->ac
.chip_class
>= GFX9
) {
3511 num_dest_deriv_channels
= 2;
3513 num_dest_deriv_channels
= 1;
3518 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
3519 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
3520 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
3521 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
3522 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
3524 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
3525 args
.derivs
[i
] = ctx
->ac
.f32_0
;
3526 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
3530 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
3531 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
3532 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
3533 if (instr
->coord_components
== 3)
3534 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
3535 ac_prepare_cube_coords(&ctx
->ac
,
3536 instr
->op
== nir_texop_txd
, instr
->is_array
,
3537 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
3540 /* Texture coordinates fixups */
3541 if (instr
->coord_components
> 1 &&
3542 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
3544 instr
->op
!= nir_texop_txf
) {
3545 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
3548 if (instr
->coord_components
> 2 &&
3549 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
3550 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
3551 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
3552 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
3554 instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
3555 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
3558 if (ctx
->ac
.chip_class
>= GFX9
&&
3559 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
3560 instr
->op
!= nir_texop_lod
) {
3561 LLVMValueRef filler
;
3562 if (instr
->op
== nir_texop_txf
)
3563 filler
= ctx
->ac
.i32_0
;
3565 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
3567 if (instr
->is_array
)
3568 args
.coords
[2] = args
.coords
[1];
3569 args
.coords
[1] = filler
;
3572 /* Pack sample index */
3573 if (instr
->op
== nir_texop_txf_ms
&& sample_index
)
3574 args
.coords
[instr
->coord_components
] = sample_index
;
3576 if (instr
->op
== nir_texop_samples_identical
) {
3577 struct ac_image_args txf_args
= { 0 };
3578 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
3580 txf_args
.dmask
= 0xf;
3581 txf_args
.resource
= fmask_ptr
;
3582 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
3583 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
3585 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
3586 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
3590 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
&&
3591 instr
->op
!= nir_texop_txs
) {
3592 unsigned sample_chan
= instr
->is_array
? 3 : 2;
3593 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
3594 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
3595 instr
->is_array
? args
.coords
[2] : NULL
,
3596 args
.coords
[sample_chan
], fmask_ptr
);
3599 if (args
.offset
&& instr
->op
== nir_texop_txf
) {
3600 nir_const_value
*const_offset
=
3601 nir_src_as_const_value(instr
->src
[offset_src
].src
);
3602 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
3603 assert(const_offset
);
3604 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
3605 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
3606 args
.coords
[i
] = LLVMBuildAdd(
3607 ctx
->ac
.builder
, args
.coords
[i
],
3608 LLVMConstInt(ctx
->ac
.i32
, const_offset
->i32
[i
], false), "");
3613 /* TODO TG4 support */
3615 if (instr
->op
== nir_texop_tg4
) {
3616 if (instr
->is_shadow
)
3619 args
.dmask
= 1 << instr
->component
;
3622 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
)
3623 args
.dim
= get_ac_sampler_dim(&ctx
->ac
, instr
->sampler_dim
, instr
->is_array
);
3624 result
= build_tex_intrinsic(ctx
, instr
, &args
);
3626 if (instr
->op
== nir_texop_query_levels
)
3627 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
3628 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
3629 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
3630 instr
->op
!= nir_texop_tg4
)
3631 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
3632 else if (instr
->op
== nir_texop_txs
&&
3633 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
3635 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
3636 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
3637 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
3638 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
3639 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
3640 } else if (ctx
->ac
.chip_class
>= GFX9
&&
3641 instr
->op
== nir_texop_txs
&&
3642 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
3644 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
3645 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
3646 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
3648 } else if (instr
->dest
.ssa
.num_components
!= 4)
3649 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
3653 assert(instr
->dest
.is_ssa
);
3654 result
= ac_to_integer(&ctx
->ac
, result
);
3655 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3660 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
3662 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
3663 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
3665 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3666 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
3669 static void visit_post_phi(struct ac_nir_context
*ctx
,
3670 nir_phi_instr
*instr
,
3671 LLVMValueRef llvm_phi
)
3673 nir_foreach_phi_src(src
, instr
) {
3674 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
3675 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
3677 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
3681 static void phi_post_pass(struct ac_nir_context
*ctx
)
3683 hash_table_foreach(ctx
->phis
, entry
) {
3684 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
3685 (LLVMValueRef
)entry
->data
);
3690 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
3691 const nir_ssa_undef_instr
*instr
)
3693 unsigned num_components
= instr
->def
.num_components
;
3694 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
3697 if (num_components
== 1)
3698 undef
= LLVMGetUndef(type
);
3700 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
3702 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
3705 static void visit_jump(struct ac_llvm_context
*ctx
,
3706 const nir_jump_instr
*instr
)
3708 switch (instr
->type
) {
3709 case nir_jump_break
:
3710 ac_build_break(ctx
);
3712 case nir_jump_continue
:
3713 ac_build_continue(ctx
);
3716 fprintf(stderr
, "Unknown NIR jump instr: ");
3717 nir_print_instr(&instr
->instr
, stderr
);
3718 fprintf(stderr
, "\n");
3723 static void visit_deref(struct ac_nir_context
*ctx
,
3724 nir_deref_instr
*instr
)
3726 if (instr
->mode
!= nir_var_shared
)
3729 LLVMValueRef result
= NULL
;
3730 switch(instr
->deref_type
) {
3731 case nir_deref_type_var
: {
3732 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
3733 result
= entry
->data
;
3736 case nir_deref_type_struct
:
3737 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
3738 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
3740 case nir_deref_type_array
:
3741 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
3742 get_src(ctx
, instr
->arr
.index
));
3744 case nir_deref_type_cast
:
3745 result
= get_src(ctx
, instr
->parent
);
3748 unreachable("Unhandled deref_instr deref type");
3751 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3754 static void visit_cf_list(struct ac_nir_context
*ctx
,
3755 struct exec_list
*list
);
3757 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
3759 LLVMBasicBlockRef llvm_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
3760 nir_foreach_instr(instr
, block
)
3762 switch (instr
->type
) {
3763 case nir_instr_type_alu
:
3764 visit_alu(ctx
, nir_instr_as_alu(instr
));
3766 case nir_instr_type_load_const
:
3767 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
3769 case nir_instr_type_intrinsic
:
3770 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
3772 case nir_instr_type_tex
:
3773 visit_tex(ctx
, nir_instr_as_tex(instr
));
3775 case nir_instr_type_phi
:
3776 visit_phi(ctx
, nir_instr_as_phi(instr
));
3778 case nir_instr_type_ssa_undef
:
3779 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
3781 case nir_instr_type_jump
:
3782 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
3784 case nir_instr_type_deref
:
3785 visit_deref(ctx
, nir_instr_as_deref(instr
));
3788 fprintf(stderr
, "Unknown NIR instr type: ");
3789 nir_print_instr(instr
, stderr
);
3790 fprintf(stderr
, "\n");
3795 _mesa_hash_table_insert(ctx
->defs
, block
, llvm_block
);
3798 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
3800 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
3802 nir_block
*then_block
=
3803 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
3805 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
3807 visit_cf_list(ctx
, &if_stmt
->then_list
);
3809 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
3810 nir_block
*else_block
=
3811 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
3813 ac_build_else(&ctx
->ac
, else_block
->index
);
3814 visit_cf_list(ctx
, &if_stmt
->else_list
);
3817 ac_build_endif(&ctx
->ac
, then_block
->index
);
3820 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
3822 nir_block
*first_loop_block
=
3823 (nir_block
*) exec_list_get_head(&loop
->body
);
3825 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
3827 visit_cf_list(ctx
, &loop
->body
);
3829 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
3832 static void visit_cf_list(struct ac_nir_context
*ctx
,
3833 struct exec_list
*list
)
3835 foreach_list_typed(nir_cf_node
, node
, node
, list
)
3837 switch (node
->type
) {
3838 case nir_cf_node_block
:
3839 visit_block(ctx
, nir_cf_node_as_block(node
));
3842 case nir_cf_node_if
:
3843 visit_if(ctx
, nir_cf_node_as_if(node
));
3846 case nir_cf_node_loop
:
3847 visit_loop(ctx
, nir_cf_node_as_loop(node
));
3857 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
3858 struct ac_shader_abi
*abi
,
3859 struct nir_shader
*nir
,
3860 struct nir_variable
*variable
,
3861 gl_shader_stage stage
)
3863 unsigned output_loc
= variable
->data
.driver_location
/ 4;
3864 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
3866 /* tess ctrl has it's own load/store paths for outputs */
3867 if (stage
== MESA_SHADER_TESS_CTRL
)
3870 if (stage
== MESA_SHADER_VERTEX
||
3871 stage
== MESA_SHADER_TESS_EVAL
||
3872 stage
== MESA_SHADER_GEOMETRY
) {
3873 int idx
= variable
->data
.location
+ variable
->data
.index
;
3874 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
3875 int length
= nir
->info
.clip_distance_array_size
+
3876 nir
->info
.cull_distance_array_size
;
3885 bool is_16bit
= glsl_type_is_16bit(variable
->type
);
3886 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
3887 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
3888 for (unsigned chan
= 0; chan
< 4; chan
++) {
3889 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
3890 ac_build_alloca_undef(ctx
, type
, "");
3896 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
3897 enum glsl_base_type type
)
3901 case GLSL_TYPE_UINT
:
3902 case GLSL_TYPE_BOOL
:
3903 case GLSL_TYPE_SUBROUTINE
:
3905 case GLSL_TYPE_FLOAT
: /* TODO handle mediump */
3907 case GLSL_TYPE_INT64
:
3908 case GLSL_TYPE_UINT64
:
3910 case GLSL_TYPE_DOUBLE
:
3913 unreachable("unknown GLSL type");
3918 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
3919 const struct glsl_type
*type
)
3921 if (glsl_type_is_scalar(type
)) {
3922 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
3925 if (glsl_type_is_vector(type
)) {
3926 return LLVMVectorType(
3927 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
3928 glsl_get_vector_elements(type
));
3931 if (glsl_type_is_matrix(type
)) {
3932 return LLVMArrayType(
3933 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
3934 glsl_get_matrix_columns(type
));
3937 if (glsl_type_is_array(type
)) {
3938 return LLVMArrayType(
3939 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
3940 glsl_get_length(type
));
3943 assert(glsl_type_is_struct(type
));
3945 LLVMTypeRef member_types
[glsl_get_length(type
)];
3947 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
3949 glsl_to_llvm_type(ac
,
3950 glsl_get_struct_field(type
, i
));
3953 return LLVMStructTypeInContext(ac
->context
, member_types
,
3954 glsl_get_length(type
), false);
3958 setup_locals(struct ac_nir_context
*ctx
,
3959 struct nir_function
*func
)
3962 ctx
->num_locals
= 0;
3963 nir_foreach_variable(variable
, &func
->impl
->locals
) {
3964 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
3965 variable
->data
.driver_location
= ctx
->num_locals
* 4;
3966 variable
->data
.location_frac
= 0;
3967 ctx
->num_locals
+= attrib_count
;
3969 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
3973 for (i
= 0; i
< ctx
->num_locals
; i
++) {
3974 for (j
= 0; j
< 4; j
++) {
3975 ctx
->locals
[i
* 4 + j
] =
3976 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
3982 setup_shared(struct ac_nir_context
*ctx
,
3983 struct nir_shader
*nir
)
3985 nir_foreach_variable(variable
, &nir
->shared
) {
3986 LLVMValueRef shared
=
3987 LLVMAddGlobalInAddressSpace(
3988 ctx
->ac
.module
, glsl_to_llvm_type(&ctx
->ac
, variable
->type
),
3989 variable
->name
? variable
->name
: "",
3991 _mesa_hash_table_insert(ctx
->vars
, variable
, shared
);
3995 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
3996 struct nir_shader
*nir
)
3998 struct ac_nir_context ctx
= {};
3999 struct nir_function
*func
;
4004 ctx
.stage
= nir
->info
.stage
;
4006 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
4008 nir_foreach_variable(variable
, &nir
->outputs
)
4009 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
4012 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4013 _mesa_key_pointer_equal
);
4014 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4015 _mesa_key_pointer_equal
);
4016 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4017 _mesa_key_pointer_equal
);
4019 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
4021 nir_index_ssa_defs(func
->impl
);
4022 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
4024 setup_locals(&ctx
, func
);
4026 if (nir
->info
.stage
== MESA_SHADER_COMPUTE
)
4027 setup_shared(&ctx
, nir
);
4029 visit_cf_list(&ctx
, &func
->impl
->body
);
4030 phi_post_pass(&ctx
);
4032 if (nir
->info
.stage
!= MESA_SHADER_COMPUTE
)
4033 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
4038 ralloc_free(ctx
.defs
);
4039 ralloc_free(ctx
.phis
);
4040 ralloc_free(ctx
.vars
);
4044 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
4046 /* While it would be nice not to have this flag, we are constrained
4047 * by the reality that LLVM 5.0 doesn't have working VGPR indexing
4050 bool llvm_has_working_vgpr_indexing
= chip_class
<= VI
;
4052 /* TODO: Indirect indexing of GS inputs is unimplemented.
4054 * TCS and TES load inputs directly from LDS or offchip memory, so
4055 * indirect indexing is trivial.
4057 nir_variable_mode indirect_mask
= 0;
4058 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
4059 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
4060 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
4061 !llvm_has_working_vgpr_indexing
)) {
4062 indirect_mask
|= nir_var_shader_in
;
4064 if (!llvm_has_working_vgpr_indexing
&&
4065 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
4066 indirect_mask
|= nir_var_shader_out
;
4068 /* TODO: We shouldn't need to do this, however LLVM isn't currently
4069 * smart enough to handle indirects without causing excess spilling
4070 * causing the gpu to hang.
4072 * See the following thread for more details of the problem:
4073 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
4075 indirect_mask
|= nir_var_local
;
4077 nir_lower_indirect_derefs(nir
, indirect_mask
);
4081 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
4083 if (intrin
->intrinsic
!= nir_intrinsic_store_deref
)
4087 nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[0]));
4089 if (var
->data
.mode
!= nir_var_shader_out
)
4092 unsigned writemask
= 0;
4093 const int location
= var
->data
.location
;
4094 unsigned first_component
= var
->data
.location_frac
;
4095 unsigned num_comps
= intrin
->dest
.ssa
.num_components
;
4097 if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
4098 writemask
= ((1 << num_comps
+ 1) - 1) << first_component
;
4099 else if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
4100 writemask
= (((1 << num_comps
+ 1) - 1) << first_component
) << 4;
4106 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
4107 unsigned *cond_block_tf_writemask
,
4108 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
4110 switch (cf_node
->type
) {
4111 case nir_cf_node_block
: {
4112 nir_block
*block
= nir_cf_node_as_block(cf_node
);
4113 nir_foreach_instr(instr
, block
) {
4114 if (instr
->type
!= nir_instr_type_intrinsic
)
4117 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
4118 if (intrin
->intrinsic
== nir_intrinsic_barrier
) {
4120 /* If we find a barrier in nested control flow put this in the
4121 * too hard basket. In GLSL this is not possible but it is in
4125 *tessfactors_are_def_in_all_invocs
= false;
4129 /* The following case must be prevented:
4130 * gl_TessLevelInner = ...;
4132 * if (gl_InvocationID == 1)
4133 * gl_TessLevelInner = ...;
4135 * If you consider disjoint code segments separated by barriers, each
4136 * such segment that writes tess factor channels should write the same
4137 * channels in all codepaths within that segment.
4139 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
4140 /* Accumulate the result: */
4141 *tessfactors_are_def_in_all_invocs
&=
4142 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
4144 /* Analyze the next code segment from scratch. */
4145 *upper_block_tf_writemask
= 0;
4146 *cond_block_tf_writemask
= 0;
4149 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
4154 case nir_cf_node_if
: {
4155 unsigned then_tessfactor_writemask
= 0;
4156 unsigned else_tessfactor_writemask
= 0;
4158 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
4159 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
4160 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
4161 cond_block_tf_writemask
,
4162 tessfactors_are_def_in_all_invocs
, true);
4165 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
4166 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
4167 cond_block_tf_writemask
,
4168 tessfactors_are_def_in_all_invocs
, true);
4171 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
4172 /* If both statements write the same tess factor channels,
4173 * we can say that the upper block writes them too.
4175 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
4176 else_tessfactor_writemask
;
4177 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
4178 else_tessfactor_writemask
;
4183 case nir_cf_node_loop
: {
4184 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
4185 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
4186 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
4187 cond_block_tf_writemask
,
4188 tessfactors_are_def_in_all_invocs
, true);
4194 unreachable("unknown cf node type");
4199 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
4201 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
4203 /* The pass works as follows:
4204 * If all codepaths write tess factors, we can say that all
4205 * invocations define tess factors.
4207 * Each tess factor channel is tracked separately.
4209 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
4210 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
4212 /* Initial value = true. Here the pass will accumulate results from
4213 * multiple segments surrounded by barriers. If tess factors aren't
4214 * written at all, it's a shader bug and we don't care if this will be
4217 bool tessfactors_are_def_in_all_invocs
= true;
4219 nir_foreach_function(function
, nir
) {
4220 if (function
->impl
) {
4221 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
4222 scan_tess_ctrl(node
, &main_block_tf_writemask
,
4223 &cond_block_tf_writemask
,
4224 &tessfactors_are_def_in_all_invocs
,
4230 /* Accumulate the result for the last code segment separated by a
4233 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
4234 tessfactors_are_def_in_all_invocs
&=
4235 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
4238 return tessfactors_are_def_in_all_invocs
;