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_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 assert(LLVMGetTypeKind(LLVMTypeOf(src0
)) != LLVMVectorTypeKind
);
273 LLVMValueRef v
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
,
275 return LLVMBuildSelect(ctx
->builder
, v
,
276 ac_to_integer_or_pointer(ctx
, src1
),
277 ac_to_integer_or_pointer(ctx
, src2
), "");
280 static LLVMValueRef
emit_iabs(struct ac_llvm_context
*ctx
,
283 return ac_build_imax(ctx
, src0
, LLVMBuildNeg(ctx
->builder
, src0
, ""));
286 static LLVMValueRef
emit_uint_carry(struct ac_llvm_context
*ctx
,
288 LLVMValueRef src0
, LLVMValueRef src1
)
290 LLVMTypeRef ret_type
;
291 LLVMTypeRef types
[] = { ctx
->i32
, ctx
->i1
};
293 LLVMValueRef params
[] = { src0
, src1
};
294 ret_type
= LLVMStructTypeInContext(ctx
->context
, types
,
297 res
= ac_build_intrinsic(ctx
, intrin
, ret_type
,
298 params
, 2, AC_FUNC_ATTR_READNONE
);
300 res
= LLVMBuildExtractValue(ctx
->builder
, res
, 1, "");
301 res
= LLVMBuildZExt(ctx
->builder
, res
, ctx
->i32
, "");
305 static LLVMValueRef
emit_b2f(struct ac_llvm_context
*ctx
,
309 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
,
310 LLVMBuildBitCast(ctx
->builder
, LLVMConstReal(ctx
->f32
, 1.0), ctx
->i32
, ""),
312 result
= LLVMBuildBitCast(ctx
->builder
, result
, ctx
->f32
, "");
316 return LLVMBuildFPTrunc(ctx
->builder
, result
, ctx
->f16
, "");
320 return LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f64
, "");
322 unreachable("Unsupported bit size.");
326 static LLVMValueRef
emit_f2b(struct ac_llvm_context
*ctx
,
329 src0
= ac_to_float(ctx
, src0
);
330 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
331 return LLVMBuildSExt(ctx
->builder
,
332 LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
, src0
, zero
, ""),
336 static LLVMValueRef
emit_b2i(struct ac_llvm_context
*ctx
,
340 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
, ctx
->i32_1
, "");
344 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i8
, "");
346 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i16
, "");
350 return LLVMBuildZExt(ctx
->builder
, result
, ctx
->i64
, "");
352 unreachable("Unsupported bit size.");
356 static LLVMValueRef
emit_i2b(struct ac_llvm_context
*ctx
,
359 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
360 return LLVMBuildSExt(ctx
->builder
,
361 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
, zero
, ""),
365 static LLVMValueRef
emit_f2f16(struct ac_llvm_context
*ctx
,
369 LLVMValueRef cond
= NULL
;
371 src0
= ac_to_float(ctx
, src0
);
372 result
= LLVMBuildFPTrunc(ctx
->builder
, src0
, ctx
->f16
, "");
374 if (ctx
->chip_class
>= VI
) {
375 LLVMValueRef args
[2];
376 /* Check if the result is a denormal - and flush to 0 if so. */
378 args
[1] = LLVMConstInt(ctx
->i32
, N_SUBNORMAL
| P_SUBNORMAL
, false);
379 cond
= ac_build_intrinsic(ctx
, "llvm.amdgcn.class.f16", ctx
->i1
, args
, 2, AC_FUNC_ATTR_READNONE
);
382 /* need to convert back up to f32 */
383 result
= LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f32
, "");
385 if (ctx
->chip_class
>= VI
)
386 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
389 /* 0x38800000 is smallest half float value (2^-14) in 32-bit float,
390 * so compare the result and flush to 0 if it's smaller.
392 LLVMValueRef temp
, cond2
;
393 temp
= emit_intrin_1f_param(ctx
, "llvm.fabs", ctx
->f32
, result
);
394 cond
= LLVMBuildFCmp(ctx
->builder
, LLVMRealUGT
,
395 LLVMBuildBitCast(ctx
->builder
, LLVMConstInt(ctx
->i32
, 0x38800000, false), ctx
->f32
, ""),
397 cond2
= LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
,
398 temp
, ctx
->f32_0
, "");
399 cond
= LLVMBuildAnd(ctx
->builder
, cond
, cond2
, "");
400 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
405 static LLVMValueRef
emit_umul_high(struct ac_llvm_context
*ctx
,
406 LLVMValueRef src0
, LLVMValueRef src1
)
408 LLVMValueRef dst64
, result
;
409 src0
= LLVMBuildZExt(ctx
->builder
, src0
, ctx
->i64
, "");
410 src1
= LLVMBuildZExt(ctx
->builder
, src1
, ctx
->i64
, "");
412 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
413 dst64
= LLVMBuildLShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
414 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
418 static LLVMValueRef
emit_imul_high(struct ac_llvm_context
*ctx
,
419 LLVMValueRef src0
, LLVMValueRef src1
)
421 LLVMValueRef dst64
, result
;
422 src0
= LLVMBuildSExt(ctx
->builder
, src0
, ctx
->i64
, "");
423 src1
= LLVMBuildSExt(ctx
->builder
, src1
, ctx
->i64
, "");
425 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
426 dst64
= LLVMBuildAShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
427 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
431 static LLVMValueRef
emit_bitfield_extract(struct ac_llvm_context
*ctx
,
433 const LLVMValueRef srcs
[3])
437 if (HAVE_LLVM
>= 0x0800) {
438 LLVMValueRef icond
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, srcs
[2], LLVMConstInt(ctx
->i32
, 32, false), "");
439 result
= ac_build_bfe(ctx
, srcs
[0], srcs
[1], srcs
[2], is_signed
);
440 result
= LLVMBuildSelect(ctx
->builder
, icond
, srcs
[0], result
, "");
442 /* FIXME: LLVM 7+ returns incorrect result when count is 0.
443 * https://bugs.freedesktop.org/show_bug.cgi?id=107276
445 LLVMValueRef zero
= ctx
->i32_0
;
446 LLVMValueRef icond1
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, srcs
[2], LLVMConstInt(ctx
->i32
, 32, false), "");
447 LLVMValueRef icond2
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, srcs
[2], zero
, "");
449 result
= ac_build_bfe(ctx
, srcs
[0], srcs
[1], srcs
[2], is_signed
);
450 result
= LLVMBuildSelect(ctx
->builder
, icond1
, srcs
[0], result
, "");
451 result
= LLVMBuildSelect(ctx
->builder
, icond2
, zero
, result
, "");
457 static LLVMValueRef
emit_bitfield_insert(struct ac_llvm_context
*ctx
,
458 LLVMValueRef src0
, LLVMValueRef src1
,
459 LLVMValueRef src2
, LLVMValueRef src3
)
461 LLVMValueRef bfi_args
[3], result
;
463 bfi_args
[0] = LLVMBuildShl(ctx
->builder
,
464 LLVMBuildSub(ctx
->builder
,
465 LLVMBuildShl(ctx
->builder
,
470 bfi_args
[1] = LLVMBuildShl(ctx
->builder
, src1
, src2
, "");
473 LLVMValueRef icond
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, src3
, LLVMConstInt(ctx
->i32
, 32, false), "");
476 * (arg0 & arg1) | (~arg0 & arg2) = arg2 ^ (arg0 & (arg1 ^ arg2)
477 * Use the right-hand side, which the LLVM backend can convert to V_BFI.
479 result
= LLVMBuildXor(ctx
->builder
, bfi_args
[2],
480 LLVMBuildAnd(ctx
->builder
, bfi_args
[0],
481 LLVMBuildXor(ctx
->builder
, bfi_args
[1], bfi_args
[2], ""), ""), "");
483 result
= LLVMBuildSelect(ctx
->builder
, icond
, src1
, result
, "");
487 static LLVMValueRef
emit_pack_half_2x16(struct ac_llvm_context
*ctx
,
490 LLVMValueRef comp
[2];
492 src0
= ac_to_float(ctx
, src0
);
493 comp
[0] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_0
, "");
494 comp
[1] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_1
, "");
496 return LLVMBuildBitCast(ctx
->builder
, ac_build_cvt_pkrtz_f16(ctx
, comp
),
500 static LLVMValueRef
emit_unpack_half_2x16(struct ac_llvm_context
*ctx
,
503 LLVMValueRef const16
= LLVMConstInt(ctx
->i32
, 16, false);
504 LLVMValueRef temps
[2], val
;
507 for (i
= 0; i
< 2; i
++) {
508 val
= i
== 1 ? LLVMBuildLShr(ctx
->builder
, src0
, const16
, "") : src0
;
509 val
= LLVMBuildTrunc(ctx
->builder
, val
, ctx
->i16
, "");
510 val
= LLVMBuildBitCast(ctx
->builder
, val
, ctx
->f16
, "");
511 temps
[i
] = LLVMBuildFPExt(ctx
->builder
, val
, ctx
->f32
, "");
513 return ac_build_gather_values(ctx
, temps
, 2);
516 static LLVMValueRef
emit_ddxy(struct ac_nir_context
*ctx
,
524 if (op
== nir_op_fddx_fine
)
525 mask
= AC_TID_MASK_LEFT
;
526 else if (op
== nir_op_fddy_fine
)
527 mask
= AC_TID_MASK_TOP
;
529 mask
= AC_TID_MASK_TOP_LEFT
;
531 /* for DDX we want to next X pixel, DDY next Y pixel. */
532 if (op
== nir_op_fddx_fine
||
533 op
== nir_op_fddx_coarse
||
539 result
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, src0
);
543 static void visit_alu(struct ac_nir_context
*ctx
, const nir_alu_instr
*instr
)
545 LLVMValueRef src
[4], result
= NULL
;
546 unsigned num_components
= instr
->dest
.dest
.ssa
.num_components
;
547 unsigned src_components
;
548 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.dest
.ssa
);
550 assert(nir_op_infos
[instr
->op
].num_inputs
<= ARRAY_SIZE(src
));
557 case nir_op_pack_half_2x16
:
560 case nir_op_unpack_half_2x16
:
563 case nir_op_cube_face_coord
:
564 case nir_op_cube_face_index
:
568 src_components
= num_components
;
571 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
572 src
[i
] = get_alu_src(ctx
, instr
->src
[i
], src_components
);
580 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
581 result
= LLVMBuildFNeg(ctx
->ac
.builder
, src
[0], "");
584 result
= LLVMBuildNeg(ctx
->ac
.builder
, src
[0], "");
587 result
= LLVMBuildNot(ctx
->ac
.builder
, src
[0], "");
590 result
= LLVMBuildAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
593 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
594 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
595 result
= LLVMBuildFAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
598 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
599 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
600 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], src
[1], "");
603 result
= LLVMBuildSub(ctx
->ac
.builder
, src
[0], src
[1], "");
606 result
= LLVMBuildMul(ctx
->ac
.builder
, src
[0], src
[1], "");
609 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
612 result
= LLVMBuildURem(ctx
->ac
.builder
, src
[0], src
[1], "");
615 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
616 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
617 result
= ac_build_fdiv(&ctx
->ac
, src
[0], src
[1]);
618 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
619 ac_to_float_type(&ctx
->ac
, def_type
), result
);
620 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[1] , result
, "");
621 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], result
, "");
624 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
625 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
626 result
= LLVMBuildFRem(ctx
->ac
.builder
, src
[0], src
[1], "");
629 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
632 result
= LLVMBuildSDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
635 result
= LLVMBuildUDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
638 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
639 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
640 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[0], src
[1], "");
643 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
644 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(src
[0]), 1.0), src
[0]);
647 result
= LLVMBuildAnd(ctx
->ac
.builder
, src
[0], src
[1], "");
650 result
= LLVMBuildOr(ctx
->ac
.builder
, src
[0], src
[1], "");
653 result
= LLVMBuildXor(ctx
->ac
.builder
, src
[0], src
[1], "");
656 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
657 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
658 LLVMTypeOf(src
[0]), "");
659 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
660 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
661 LLVMTypeOf(src
[0]), "");
662 result
= LLVMBuildShl(ctx
->ac
.builder
, src
[0], src
[1], "");
665 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
666 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
667 LLVMTypeOf(src
[0]), "");
668 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
669 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
670 LLVMTypeOf(src
[0]), "");
671 result
= LLVMBuildAShr(ctx
->ac
.builder
, src
[0], src
[1], "");
674 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
675 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
676 LLVMTypeOf(src
[0]), "");
677 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
678 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
679 LLVMTypeOf(src
[0]), "");
680 result
= LLVMBuildLShr(ctx
->ac
.builder
, src
[0], src
[1], "");
683 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
686 result
= emit_int_cmp(&ctx
->ac
, LLVMIntNE
, src
[0], src
[1]);
689 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, src
[0], src
[1]);
692 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSGE
, src
[0], src
[1]);
695 result
= emit_int_cmp(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
698 result
= emit_int_cmp(&ctx
->ac
, LLVMIntUGE
, src
[0], src
[1]);
701 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOEQ
, src
[0], src
[1]);
704 result
= emit_float_cmp(&ctx
->ac
, LLVMRealUNE
, src
[0], src
[1]);
707 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOLT
, src
[0], src
[1]);
710 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOGE
, src
[0], src
[1]);
713 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.fabs",
714 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
717 result
= emit_iabs(&ctx
->ac
, src
[0]);
720 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
723 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
726 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
729 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
732 result
= ac_build_isign(&ctx
->ac
, src
[0],
733 instr
->dest
.dest
.ssa
.bit_size
);
736 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
737 result
= ac_build_fsign(&ctx
->ac
, src
[0],
738 instr
->dest
.dest
.ssa
.bit_size
);
741 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
742 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
745 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.trunc",
746 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
749 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.ceil",
750 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
752 case nir_op_fround_even
:
753 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.rint",
754 ac_to_float_type(&ctx
->ac
, def_type
),src
[0]);
757 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
758 result
= ac_build_fract(&ctx
->ac
, src
[0],
759 instr
->dest
.dest
.ssa
.bit_size
);
762 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sin",
763 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
766 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.cos",
767 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
770 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
771 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
774 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.exp2",
775 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
778 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.log2",
779 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
782 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
783 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
784 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(result
), 1.0), result
);
786 case nir_op_frexp_exp
:
787 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
788 result
= ac_build_frexp_exp(&ctx
->ac
, src
[0],
789 ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])));
790 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) == 16)
791 result
= LLVMBuildSExt(ctx
->ac
.builder
, result
,
794 case nir_op_frexp_sig
:
795 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
796 result
= ac_build_frexp_mant(&ctx
->ac
, src
[0],
797 instr
->dest
.dest
.ssa
.bit_size
);
800 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.pow",
801 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
804 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
805 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
806 if (ctx
->ac
.chip_class
< GFX9
&&
807 instr
->dest
.dest
.ssa
.bit_size
== 32) {
808 /* Only pre-GFX9 chips do not flush denorms. */
809 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.canonicalize",
810 ac_to_float_type(&ctx
->ac
, def_type
),
815 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
816 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
817 if (ctx
->ac
.chip_class
< GFX9
&&
818 instr
->dest
.dest
.ssa
.bit_size
== 32) {
819 /* Only pre-GFX9 chips do not flush denorms. */
820 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.canonicalize",
821 ac_to_float_type(&ctx
->ac
, def_type
),
826 result
= emit_intrin_3f_param(&ctx
->ac
, "llvm.fmuladd",
827 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1], src
[2]);
830 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
831 if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 32)
832 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f32", ctx
->ac
.f32
, src
, 2, AC_FUNC_ATTR_READNONE
);
833 else if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 16)
834 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f16", ctx
->ac
.f16
, src
, 2, AC_FUNC_ATTR_READNONE
);
836 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f64", ctx
->ac
.f64
, src
, 2, AC_FUNC_ATTR_READNONE
);
838 case nir_op_ibitfield_extract
:
839 result
= emit_bitfield_extract(&ctx
->ac
, true, src
);
841 case nir_op_ubitfield_extract
:
842 result
= emit_bitfield_extract(&ctx
->ac
, false, src
);
844 case nir_op_bitfield_insert
:
845 result
= emit_bitfield_insert(&ctx
->ac
, src
[0], src
[1], src
[2], src
[3]);
847 case nir_op_bitfield_reverse
:
848 result
= ac_build_bitfield_reverse(&ctx
->ac
, src
[0]);
850 case nir_op_bit_count
:
851 result
= ac_build_bit_count(&ctx
->ac
, src
[0]);
856 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
857 src
[i
] = ac_to_integer(&ctx
->ac
, src
[i
]);
858 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
, "");
871 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
872 result
= LLVMBuildFPToUI(ctx
->ac
.builder
, src
[0], def_type
, "");
877 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
878 result
= LLVMBuildSIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
883 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
884 result
= LLVMBuildUIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
886 case nir_op_f2f16_rtz
:
887 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
888 if (LLVMTypeOf(src
[0]) == ctx
->ac
.f64
)
889 src
[0] = LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ctx
->ac
.f32
, "");
890 LLVMValueRef param
[2] = { src
[0], ctx
->ac
.f32_0
};
891 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, param
);
892 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
894 case nir_op_f2f16_rtne
:
898 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
899 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
900 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
902 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
908 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
909 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
910 result
= LLVMBuildZExt(ctx
->ac
.builder
, src
[0], def_type
, "");
912 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
918 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
919 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
920 result
= LLVMBuildSExt(ctx
->ac
.builder
, src
[0], def_type
, "");
922 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
925 result
= emit_bcsel(&ctx
->ac
, src
[0], src
[1], src
[2]);
927 case nir_op_find_lsb
:
928 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
929 result
= ac_find_lsb(&ctx
->ac
, ctx
->ac
.i32
, src
[0]);
931 case nir_op_ufind_msb
:
932 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
933 result
= ac_build_umsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
935 case nir_op_ifind_msb
:
936 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
937 result
= ac_build_imsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
939 case nir_op_uadd_carry
:
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.uadd.with.overflow.i32", src
[0], src
[1]);
944 case nir_op_usub_borrow
:
945 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
946 src
[1] = ac_to_integer(&ctx
->ac
, src
[1]);
947 result
= emit_uint_carry(&ctx
->ac
, "llvm.usub.with.overflow.i32", src
[0], src
[1]);
952 result
= emit_b2f(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
955 result
= emit_f2b(&ctx
->ac
, src
[0]);
961 result
= emit_b2i(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
964 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
965 result
= emit_i2b(&ctx
->ac
, src
[0]);
967 case nir_op_fquantize2f16
:
968 result
= emit_f2f16(&ctx
->ac
, src
[0]);
970 case nir_op_umul_high
:
971 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
972 src
[1] = ac_to_integer(&ctx
->ac
, src
[1]);
973 result
= emit_umul_high(&ctx
->ac
, src
[0], src
[1]);
975 case nir_op_imul_high
:
976 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
977 src
[1] = ac_to_integer(&ctx
->ac
, src
[1]);
978 result
= emit_imul_high(&ctx
->ac
, src
[0], src
[1]);
980 case nir_op_pack_half_2x16
:
981 result
= emit_pack_half_2x16(&ctx
->ac
, src
[0]);
983 case nir_op_unpack_half_2x16
:
984 result
= emit_unpack_half_2x16(&ctx
->ac
, src
[0]);
988 case nir_op_fddx_fine
:
989 case nir_op_fddy_fine
:
990 case nir_op_fddx_coarse
:
991 case nir_op_fddy_coarse
:
992 result
= emit_ddxy(ctx
, instr
->op
, src
[0]);
995 case nir_op_unpack_64_2x32_split_x
: {
996 assert(ac_get_llvm_num_components(src
[0]) == 1);
997 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1000 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1005 case nir_op_unpack_64_2x32_split_y
: {
1006 assert(ac_get_llvm_num_components(src
[0]) == 1);
1007 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1010 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1015 case nir_op_pack_64_2x32_split
: {
1016 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
1017 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i64
, "");
1021 case nir_op_pack_32_2x16_split
: {
1022 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
1023 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
1027 case nir_op_unpack_32_2x16_split_x
: {
1028 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1031 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1036 case nir_op_unpack_32_2x16_split_y
: {
1037 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1040 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1045 case nir_op_cube_face_coord
: {
1046 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1047 LLVMValueRef results
[2];
1049 for (unsigned chan
= 0; chan
< 3; chan
++)
1050 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1051 results
[0] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubetc",
1052 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1053 results
[1] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubesc",
1054 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1055 result
= ac_build_gather_values(&ctx
->ac
, results
, 2);
1059 case nir_op_cube_face_index
: {
1060 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1062 for (unsigned chan
= 0; chan
< 3; chan
++)
1063 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1064 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubeid",
1065 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1070 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1071 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1072 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1073 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1076 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1077 result
= ac_build_umin(&ctx
->ac
, result
, src
[2]);
1080 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1081 result
= ac_build_imin(&ctx
->ac
, result
, src
[2]);
1084 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1085 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1086 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1087 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1090 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1091 result
= ac_build_umax(&ctx
->ac
, result
, src
[2]);
1094 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1095 result
= ac_build_imax(&ctx
->ac
, result
, src
[2]);
1097 case nir_op_fmed3
: {
1098 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1099 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
1100 src
[2] = ac_to_float(&ctx
->ac
, src
[2]);
1101 result
= ac_build_fmed3(&ctx
->ac
, src
[0], src
[1], src
[2],
1102 instr
->dest
.dest
.ssa
.bit_size
);
1105 case nir_op_imed3
: {
1106 LLVMValueRef tmp1
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1107 LLVMValueRef tmp2
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1108 tmp2
= ac_build_imin(&ctx
->ac
, tmp2
, src
[2]);
1109 result
= ac_build_imax(&ctx
->ac
, tmp1
, tmp2
);
1112 case nir_op_umed3
: {
1113 LLVMValueRef tmp1
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1114 LLVMValueRef tmp2
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1115 tmp2
= ac_build_umin(&ctx
->ac
, tmp2
, src
[2]);
1116 result
= ac_build_umax(&ctx
->ac
, tmp1
, tmp2
);
1121 fprintf(stderr
, "Unknown NIR alu instr: ");
1122 nir_print_instr(&instr
->instr
, stderr
);
1123 fprintf(stderr
, "\n");
1128 assert(instr
->dest
.dest
.is_ssa
);
1129 result
= ac_to_integer_or_pointer(&ctx
->ac
, result
);
1130 ctx
->ssa_defs
[instr
->dest
.dest
.ssa
.index
] = result
;
1134 static void visit_load_const(struct ac_nir_context
*ctx
,
1135 const nir_load_const_instr
*instr
)
1137 LLVMValueRef values
[4], value
= NULL
;
1138 LLVMTypeRef element_type
=
1139 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
1141 for (unsigned i
= 0; i
< instr
->def
.num_components
; ++i
) {
1142 switch (instr
->def
.bit_size
) {
1144 values
[i
] = LLVMConstInt(element_type
,
1145 instr
->value
.u8
[i
], false);
1148 values
[i
] = LLVMConstInt(element_type
,
1149 instr
->value
.u16
[i
], false);
1152 values
[i
] = LLVMConstInt(element_type
,
1153 instr
->value
.u32
[i
], false);
1156 values
[i
] = LLVMConstInt(element_type
,
1157 instr
->value
.u64
[i
], false);
1161 "unsupported nir load_const bit_size: %d\n",
1162 instr
->def
.bit_size
);
1166 if (instr
->def
.num_components
> 1) {
1167 value
= LLVMConstVector(values
, instr
->def
.num_components
);
1171 ctx
->ssa_defs
[instr
->def
.index
] = value
;
1175 get_buffer_size(struct ac_nir_context
*ctx
, LLVMValueRef descriptor
, bool in_elements
)
1178 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1179 LLVMConstInt(ctx
->ac
.i32
, 2, false), "");
1182 if (ctx
->ac
.chip_class
== VI
&& in_elements
) {
1183 /* On VI, the descriptor contains the size in bytes,
1184 * but TXQ must return the size in elements.
1185 * The stride is always non-zero for resources using TXQ.
1187 LLVMValueRef stride
=
1188 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1190 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
,
1191 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
1192 stride
= LLVMBuildAnd(ctx
->ac
.builder
, stride
,
1193 LLVMConstInt(ctx
->ac
.i32
, 0x3fff, false), "");
1195 size
= LLVMBuildUDiv(ctx
->ac
.builder
, size
, stride
, "");
1200 static LLVMValueRef
lower_gather4_integer(struct ac_llvm_context
*ctx
,
1202 struct ac_image_args
*args
,
1203 const nir_tex_instr
*instr
)
1205 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1206 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1207 LLVMValueRef half_texel
[2];
1208 LLVMValueRef compare_cube_wa
= NULL
;
1209 LLVMValueRef result
;
1213 struct ac_image_args txq_args
= { 0 };
1215 txq_args
.dim
= get_ac_sampler_dim(ctx
, instr
->sampler_dim
, instr
->is_array
);
1216 txq_args
.opcode
= ac_image_get_resinfo
;
1217 txq_args
.dmask
= 0xf;
1218 txq_args
.lod
= ctx
->i32_0
;
1219 txq_args
.resource
= args
->resource
;
1220 txq_args
.attributes
= AC_FUNC_ATTR_READNONE
;
1221 LLVMValueRef size
= ac_build_image_opcode(ctx
, &txq_args
);
1223 for (unsigned c
= 0; c
< 2; c
++) {
1224 half_texel
[c
] = LLVMBuildExtractElement(ctx
->builder
, size
,
1225 LLVMConstInt(ctx
->i32
, c
, false), "");
1226 half_texel
[c
] = LLVMBuildUIToFP(ctx
->builder
, half_texel
[c
], ctx
->f32
, "");
1227 half_texel
[c
] = ac_build_fdiv(ctx
, ctx
->f32_1
, half_texel
[c
]);
1228 half_texel
[c
] = LLVMBuildFMul(ctx
->builder
, half_texel
[c
],
1229 LLVMConstReal(ctx
->f32
, -0.5), "");
1233 LLVMValueRef orig_coords
[2] = { args
->coords
[0], args
->coords
[1] };
1235 for (unsigned c
= 0; c
< 2; c
++) {
1237 tmp
= LLVMBuildBitCast(ctx
->builder
, args
->coords
[c
], ctx
->f32
, "");
1238 args
->coords
[c
] = LLVMBuildFAdd(ctx
->builder
, tmp
, half_texel
[c
], "");
1242 * Apparantly cube has issue with integer types that the workaround doesn't solve,
1243 * so this tests if the format is 8_8_8_8 and an integer type do an alternate
1244 * workaround by sampling using a scaled type and converting.
1245 * This is taken from amdgpu-pro shaders.
1247 /* NOTE this produces some ugly code compared to amdgpu-pro,
1248 * LLVM ends up dumping SGPRs into VGPRs to deal with the compare/select,
1249 * and then reads them back. -pro generates two selects,
1250 * one s_cmp for the descriptor rewriting
1251 * one v_cmp for the coordinate and result changes.
1253 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1254 LLVMValueRef tmp
, tmp2
;
1256 /* workaround 8/8/8/8 uint/sint cube gather bug */
1257 /* first detect it then change to a scaled read and f2i */
1258 tmp
= LLVMBuildExtractElement(ctx
->builder
, args
->resource
, ctx
->i32_1
, "");
1261 /* extract the DATA_FORMAT */
1262 tmp
= ac_build_bfe(ctx
, tmp
, LLVMConstInt(ctx
->i32
, 20, false),
1263 LLVMConstInt(ctx
->i32
, 6, false), false);
1265 /* is the DATA_FORMAT == 8_8_8_8 */
1266 compare_cube_wa
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, tmp
, LLVMConstInt(ctx
->i32
, V_008F14_IMG_DATA_FORMAT_8_8_8_8
, false), "");
1268 if (stype
== GLSL_TYPE_UINT
)
1269 /* Create a NUM FORMAT - 0x2 or 0x4 - USCALED or UINT */
1270 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, LLVMConstInt(ctx
->i32
, 0x8000000, false),
1271 LLVMConstInt(ctx
->i32
, 0x10000000, false), "");
1273 /* Create a NUM FORMAT - 0x3 or 0x5 - SSCALED or SINT */
1274 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, LLVMConstInt(ctx
->i32
, 0xc000000, false),
1275 LLVMConstInt(ctx
->i32
, 0x14000000, false), "");
1277 /* replace the NUM FORMAT in the descriptor */
1278 tmp2
= LLVMBuildAnd(ctx
->builder
, tmp2
, LLVMConstInt(ctx
->i32
, C_008F14_NUM_FORMAT_GFX6
, false), "");
1279 tmp2
= LLVMBuildOr(ctx
->builder
, tmp2
, tmp
, "");
1281 args
->resource
= LLVMBuildInsertElement(ctx
->builder
, args
->resource
, tmp2
, ctx
->i32_1
, "");
1283 /* don't modify the coordinates for this case */
1284 for (unsigned c
= 0; c
< 2; ++c
)
1285 args
->coords
[c
] = LLVMBuildSelect(
1286 ctx
->builder
, compare_cube_wa
,
1287 orig_coords
[c
], args
->coords
[c
], "");
1290 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1291 result
= ac_build_image_opcode(ctx
, args
);
1293 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1294 LLVMValueRef tmp
, tmp2
;
1296 /* if the cube workaround is in place, f2i the result. */
1297 for (unsigned c
= 0; c
< 4; c
++) {
1298 tmp
= LLVMBuildExtractElement(ctx
->builder
, result
, LLVMConstInt(ctx
->i32
, c
, false), "");
1299 if (stype
== GLSL_TYPE_UINT
)
1300 tmp2
= LLVMBuildFPToUI(ctx
->builder
, tmp
, ctx
->i32
, "");
1302 tmp2
= LLVMBuildFPToSI(ctx
->builder
, tmp
, ctx
->i32
, "");
1303 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->i32
, "");
1304 tmp2
= LLVMBuildBitCast(ctx
->builder
, tmp2
, ctx
->i32
, "");
1305 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, tmp2
, tmp
, "");
1306 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f32
, "");
1307 result
= LLVMBuildInsertElement(ctx
->builder
, result
, tmp
, LLVMConstInt(ctx
->i32
, c
, false), "");
1313 static nir_deref_instr
*get_tex_texture_deref(const nir_tex_instr
*instr
)
1315 nir_deref_instr
*texture_deref_instr
= NULL
;
1317 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
1318 switch (instr
->src
[i
].src_type
) {
1319 case nir_tex_src_texture_deref
:
1320 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
1326 return texture_deref_instr
;
1329 static LLVMValueRef
build_tex_intrinsic(struct ac_nir_context
*ctx
,
1330 const nir_tex_instr
*instr
,
1331 struct ac_image_args
*args
)
1333 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
1334 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
1336 if (ctx
->abi
->gfx9_stride_size_workaround
) {
1337 return ac_build_buffer_load_format_gfx9_safe(&ctx
->ac
,
1341 util_last_bit(mask
),
1344 return ac_build_buffer_load_format(&ctx
->ac
,
1348 util_last_bit(mask
),
1353 args
->opcode
= ac_image_sample
;
1355 switch (instr
->op
) {
1357 case nir_texop_txf_ms
:
1358 case nir_texop_samples_identical
:
1359 args
->opcode
= args
->level_zero
||
1360 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
?
1361 ac_image_load
: ac_image_load_mip
;
1362 args
->level_zero
= false;
1365 case nir_texop_query_levels
:
1366 args
->opcode
= ac_image_get_resinfo
;
1368 args
->lod
= ctx
->ac
.i32_0
;
1369 args
->level_zero
= false;
1372 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1374 args
->level_zero
= true;
1378 args
->opcode
= ac_image_gather4
;
1379 args
->level_zero
= true;
1382 args
->opcode
= ac_image_get_lod
;
1388 if (instr
->op
== nir_texop_tg4
&& ctx
->ac
.chip_class
<= VI
) {
1389 nir_deref_instr
*texture_deref_instr
= get_tex_texture_deref(instr
);
1390 nir_variable
*var
= nir_deref_instr_get_variable(texture_deref_instr
);
1391 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1392 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1393 if (stype
== GLSL_TYPE_UINT
|| stype
== GLSL_TYPE_INT
) {
1394 return lower_gather4_integer(&ctx
->ac
, var
, args
, instr
);
1398 /* Fixup for GFX9 which allocates 1D textures as 2D. */
1399 if (instr
->op
== nir_texop_lod
&& ctx
->ac
.chip_class
>= GFX9
) {
1400 if ((args
->dim
== ac_image_2darray
||
1401 args
->dim
== ac_image_2d
) && !args
->coords
[1]) {
1402 args
->coords
[1] = ctx
->ac
.i32_0
;
1406 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1407 return ac_build_image_opcode(&ctx
->ac
, args
);
1410 static LLVMValueRef
visit_vulkan_resource_reindex(struct ac_nir_context
*ctx
,
1411 nir_intrinsic_instr
*instr
)
1413 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
1414 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
1416 LLVMValueRef result
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
1417 LLVMSetMetadata(result
, ctx
->ac
.uniform_md_kind
, ctx
->ac
.empty_md
);
1421 static LLVMValueRef
visit_load_push_constant(struct ac_nir_context
*ctx
,
1422 nir_intrinsic_instr
*instr
)
1424 LLVMValueRef ptr
, addr
;
1425 LLVMValueRef src0
= get_src(ctx
, instr
->src
[0]);
1426 unsigned index
= nir_intrinsic_base(instr
);
1428 addr
= LLVMConstInt(ctx
->ac
.i32
, index
, 0);
1429 addr
= LLVMBuildAdd(ctx
->ac
.builder
, addr
, src0
, "");
1431 /* Load constant values from user SGPRS when possible, otherwise
1432 * fallback to the default path that loads directly from memory.
1434 if (LLVMIsConstant(src0
) &&
1435 instr
->dest
.ssa
.bit_size
== 32) {
1436 unsigned count
= instr
->dest
.ssa
.num_components
;
1437 unsigned offset
= index
;
1439 offset
+= LLVMConstIntGetZExtValue(src0
);
1442 offset
-= ctx
->abi
->base_inline_push_consts
;
1444 if (offset
+ count
<= ctx
->abi
->num_inline_push_consts
) {
1445 return ac_build_gather_values(&ctx
->ac
,
1446 ctx
->abi
->inline_push_consts
+ offset
,
1451 ptr
= ac_build_gep0(&ctx
->ac
, ctx
->abi
->push_constants
, addr
);
1453 if (instr
->dest
.ssa
.bit_size
== 8) {
1454 unsigned load_dwords
= instr
->dest
.ssa
.num_components
> 1 ? 2 : 1;
1455 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), 4 * load_dwords
);
1456 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1457 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1459 LLVMValueRef params
[3];
1460 if (load_dwords
> 1) {
1461 LLVMValueRef res_vec
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(ctx
->ac
.i32
, 2), "");
1462 params
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
1463 params
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 0, false), "");
1465 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, ctx
->ac
.i32
, "");
1466 params
[0] = ctx
->ac
.i32_0
;
1470 res
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.alignbyte", ctx
->ac
.i32
, params
, 3, 0);
1472 res
= LLVMBuildTrunc(ctx
->ac
.builder
, res
, LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.num_components
* 8), "");
1473 if (instr
->dest
.ssa
.num_components
> 1)
1474 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), instr
->dest
.ssa
.num_components
), "");
1476 } else if (instr
->dest
.ssa
.bit_size
== 16) {
1477 unsigned load_dwords
= instr
->dest
.ssa
.num_components
/ 2 + 1;
1478 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt16TypeInContext(ctx
->ac
.context
), 2 * load_dwords
);
1479 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1480 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1481 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, vec_type
, "");
1482 LLVMValueRef cond
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, ctx
->ac
.i32_1
, "");
1483 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->ac
.i1
, "");
1484 LLVMValueRef mask
[] = { LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
1485 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
1486 LLVMConstInt(ctx
->ac
.i32
, 4, false)};
1487 LLVMValueRef swizzle_aligned
= LLVMConstVector(&mask
[0], instr
->dest
.ssa
.num_components
);
1488 LLVMValueRef swizzle_unaligned
= LLVMConstVector(&mask
[1], instr
->dest
.ssa
.num_components
);
1489 LLVMValueRef shuffle_aligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_aligned
, "");
1490 LLVMValueRef shuffle_unaligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_unaligned
, "");
1491 res
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, shuffle_unaligned
, shuffle_aligned
, "");
1492 return LLVMBuildBitCast(ctx
->ac
.builder
, res
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1495 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, get_def_type(ctx
, &instr
->dest
.ssa
));
1497 return LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1500 static LLVMValueRef
visit_get_buffer_size(struct ac_nir_context
*ctx
,
1501 const nir_intrinsic_instr
*instr
)
1503 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
1505 return get_buffer_size(ctx
, ctx
->abi
->load_ssbo(ctx
->abi
, index
, false), false);
1508 static uint32_t widen_mask(uint32_t mask
, unsigned multiplier
)
1510 uint32_t new_mask
= 0;
1511 for(unsigned i
= 0; i
< 32 && (1u << i
) <= mask
; ++i
)
1512 if (mask
& (1u << i
))
1513 new_mask
|= ((1u << multiplier
) - 1u) << (i
* multiplier
);
1517 static LLVMValueRef
extract_vector_range(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
1518 unsigned start
, unsigned count
)
1520 LLVMValueRef mask
[] = {
1521 ctx
->i32_0
, ctx
->i32_1
,
1522 LLVMConstInt(ctx
->i32
, 2, false), LLVMConstInt(ctx
->i32
, 3, false) };
1524 unsigned src_elements
= ac_get_llvm_num_components(src
);
1526 if (count
== src_elements
) {
1529 } else if (count
== 1) {
1530 assert(start
< src_elements
);
1531 return LLVMBuildExtractElement(ctx
->builder
, src
, mask
[start
], "");
1533 assert(start
+ count
<= src_elements
);
1535 LLVMValueRef swizzle
= LLVMConstVector(&mask
[start
], count
);
1536 return LLVMBuildShuffleVector(ctx
->builder
, src
, src
, swizzle
, "");
1540 static unsigned get_cache_policy(struct ac_nir_context
*ctx
,
1541 enum gl_access_qualifier access
,
1542 bool may_store_unaligned
,
1543 bool writeonly_memory
)
1545 unsigned cache_policy
= 0;
1547 /* SI has a TC L1 bug causing corruption of 8bit/16bit stores. All
1548 * store opcodes not aligned to a dword are affected. The only way to
1549 * get unaligned stores is through shader images.
1551 if (((may_store_unaligned
&& ctx
->ac
.chip_class
== SI
) ||
1552 /* If this is write-only, don't keep data in L1 to prevent
1553 * evicting L1 cache lines that may be needed by other
1557 access
& (ACCESS_COHERENT
| ACCESS_VOLATILE
))) {
1558 cache_policy
|= ac_glc
;
1561 return cache_policy
;
1564 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1565 nir_intrinsic_instr
*instr
)
1567 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1568 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1569 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1570 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1571 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
1572 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, writeonly_memory
);
1574 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1575 get_src(ctx
, instr
->src
[1]), true);
1576 LLVMValueRef base_data
= src_data
;
1577 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1578 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1582 LLVMValueRef data
, offset
;
1583 LLVMTypeRef data_type
;
1585 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1587 /* Due to an LLVM limitation, split 3-element writes
1588 * into a 2-element and a 1-element write. */
1590 writemask
|= 1 << (start
+ 2);
1593 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1595 /* we can only store 4 DWords at the same time.
1596 * can only happen for 64 Bit vectors. */
1597 if (num_bytes
> 16) {
1598 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1603 /* check alignment of 16 Bit stores */
1604 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1605 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1609 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1611 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1612 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1614 if (num_bytes
== 1) {
1615 ac_build_tbuffer_store_byte(&ctx
->ac
, rsrc
, data
,
1616 offset
, ctx
->ac
.i32_0
,
1617 cache_policy
& ac_glc
,
1619 } else if (num_bytes
== 2) {
1620 ac_build_tbuffer_store_short(&ctx
->ac
, rsrc
, data
,
1621 offset
, ctx
->ac
.i32_0
,
1622 cache_policy
& ac_glc
,
1625 int num_channels
= num_bytes
/ 4;
1627 switch (num_bytes
) {
1628 case 16: /* v4f32 */
1629 data_type
= ctx
->ac
.v4f32
;
1632 data_type
= ctx
->ac
.v2f32
;
1635 data_type
= ctx
->ac
.f32
;
1638 unreachable("Malformed vector store.");
1640 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1642 ac_build_buffer_store_dword(&ctx
->ac
, rsrc
, data
,
1643 num_channels
, offset
,
1645 cache_policy
& ac_glc
,
1646 false, writeonly_memory
,
1652 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1653 const nir_intrinsic_instr
*instr
)
1657 LLVMValueRef params
[6];
1660 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1661 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1663 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1664 params
[arg_count
++] = ctx
->abi
->load_ssbo(ctx
->abi
,
1665 get_src(ctx
, instr
->src
[0]),
1667 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1668 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1669 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1671 switch (instr
->intrinsic
) {
1672 case nir_intrinsic_ssbo_atomic_add
:
1675 case nir_intrinsic_ssbo_atomic_imin
:
1678 case nir_intrinsic_ssbo_atomic_umin
:
1681 case nir_intrinsic_ssbo_atomic_imax
:
1684 case nir_intrinsic_ssbo_atomic_umax
:
1687 case nir_intrinsic_ssbo_atomic_and
:
1690 case nir_intrinsic_ssbo_atomic_or
:
1693 case nir_intrinsic_ssbo_atomic_xor
:
1696 case nir_intrinsic_ssbo_atomic_exchange
:
1699 case nir_intrinsic_ssbo_atomic_comp_swap
:
1706 if (HAVE_LLVM
>= 0x900 &&
1707 instr
->intrinsic
!= nir_intrinsic_ssbo_atomic_comp_swap
) {
1708 snprintf(name
, sizeof(name
),
1709 "llvm.amdgcn.buffer.atomic.%s.i32", op
);
1711 snprintf(name
, sizeof(name
),
1712 "llvm.amdgcn.buffer.atomic.%s", op
);
1715 return ac_build_intrinsic(&ctx
->ac
, name
, ctx
->ac
.i32
, params
, arg_count
, 0);
1718 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
1719 const nir_intrinsic_instr
*instr
)
1721 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1722 int num_components
= instr
->num_components
;
1723 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1724 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, false);
1726 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1727 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1728 get_src(ctx
, instr
->src
[0]), false);
1729 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
1731 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1732 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
1734 LLVMValueRef results
[4];
1735 for (int i
= 0; i
< num_components
;) {
1736 int num_elems
= num_components
- i
;
1737 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
1739 if (num_elems
* elem_size_bytes
> 16)
1740 num_elems
= 16 / elem_size_bytes
;
1741 int load_bytes
= num_elems
* elem_size_bytes
;
1743 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
1747 if (load_bytes
== 1) {
1748 ret
= ac_build_tbuffer_load_byte(&ctx
->ac
,
1753 cache_policy
& ac_glc
);
1754 } else if (load_bytes
== 2) {
1755 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
1760 cache_policy
& ac_glc
);
1762 int num_channels
= util_next_power_of_two(load_bytes
) / 4;
1764 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_channels
,
1765 vindex
, offset
, immoffset
, 0,
1766 cache_policy
& ac_glc
, 0,
1770 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
1771 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
1772 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
1774 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
1775 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
1777 for (unsigned j
= 0; j
< num_elems
; j
++) {
1778 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
1783 return ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1786 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
1787 const nir_intrinsic_instr
*instr
)
1790 LLVMValueRef rsrc
= get_src(ctx
, instr
->src
[0]);
1791 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1792 int num_components
= instr
->num_components
;
1794 if (ctx
->abi
->load_ubo
)
1795 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
1797 if (instr
->dest
.ssa
.bit_size
== 64)
1798 num_components
*= 2;
1800 if (instr
->dest
.ssa
.bit_size
== 16 || instr
->dest
.ssa
.bit_size
== 8) {
1801 unsigned load_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1802 LLVMValueRef results
[num_components
];
1803 for (unsigned i
= 0; i
< num_components
; ++i
) {
1804 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
,
1807 if (load_bytes
== 1) {
1808 results
[i
] = ac_build_tbuffer_load_byte(&ctx
->ac
,
1815 assert(load_bytes
== 2);
1816 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
1824 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1826 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
1827 NULL
, 0, false, false, true, true);
1829 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
1832 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
1833 get_def_type(ctx
, &instr
->dest
.ssa
), "");
1837 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
1838 bool vs_in
, unsigned *vertex_index_out
,
1839 LLVMValueRef
*vertex_index_ref
,
1840 unsigned *const_out
, LLVMValueRef
*indir_out
)
1842 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
1843 nir_deref_path path
;
1844 unsigned idx_lvl
= 1;
1846 nir_deref_path_init(&path
, instr
, NULL
);
1848 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
1849 if (vertex_index_ref
) {
1850 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
1851 if (vertex_index_out
)
1852 *vertex_index_out
= 0;
1854 nir_const_value
*v
= nir_src_as_const_value(path
.path
[idx_lvl
]->arr
.index
);
1856 *vertex_index_out
= v
->u32
[0];
1861 uint32_t const_offset
= 0;
1862 LLVMValueRef offset
= NULL
;
1864 if (var
->data
.compact
) {
1865 assert(instr
->deref_type
== nir_deref_type_array
);
1866 nir_const_value
*v
= nir_src_as_const_value(instr
->arr
.index
);
1868 const_offset
= v
->u32
[0];
1872 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
1873 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
1874 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
1875 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
1877 for (unsigned i
= 0; i
< index
; i
++) {
1878 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
1879 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
1881 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
1882 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
1883 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
1884 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
1886 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
1890 unreachable("Uhandled deref type in get_deref_instr_offset");
1894 nir_deref_path_finish(&path
);
1896 if (const_offset
&& offset
)
1897 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
1898 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
1901 *const_out
= const_offset
;
1902 *indir_out
= offset
;
1905 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
1906 nir_intrinsic_instr
*instr
,
1909 LLVMValueRef result
;
1910 LLVMValueRef vertex_index
= NULL
;
1911 LLVMValueRef indir_index
= NULL
;
1912 unsigned const_index
= 0;
1914 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
1916 unsigned location
= var
->data
.location
;
1917 unsigned driver_location
= var
->data
.driver_location
;
1918 const bool is_patch
= var
->data
.patch
;
1919 const bool is_compact
= var
->data
.compact
;
1921 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
1922 false, NULL
, is_patch
? NULL
: &vertex_index
,
1923 &const_index
, &indir_index
);
1925 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1927 LLVMTypeRef src_component_type
;
1928 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
1929 src_component_type
= LLVMGetElementType(dest_type
);
1931 src_component_type
= dest_type
;
1933 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
1934 vertex_index
, indir_index
,
1935 const_index
, location
, driver_location
,
1936 var
->data
.location_frac
,
1937 instr
->num_components
,
1938 is_patch
, is_compact
, load_inputs
);
1939 if (instr
->dest
.ssa
.bit_size
== 16) {
1940 result
= ac_to_integer(&ctx
->ac
, result
);
1941 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
1943 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
1947 type_scalar_size_bytes(const struct glsl_type
*type
)
1949 assert(glsl_type_is_vector_or_scalar(type
) ||
1950 glsl_type_is_matrix(type
));
1951 return glsl_type_is_boolean(type
) ? 4 : glsl_get_bit_size(type
) / 8;
1954 static LLVMValueRef
visit_load_var(struct ac_nir_context
*ctx
,
1955 nir_intrinsic_instr
*instr
)
1957 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
1958 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
1960 LLVMValueRef values
[8];
1962 int ve
= instr
->dest
.ssa
.num_components
;
1964 LLVMValueRef indir_index
;
1966 unsigned const_index
;
1967 unsigned stride
= 4;
1968 int mode
= deref
->mode
;
1971 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
1972 var
->data
.mode
== nir_var_shader_in
;
1973 idx
= var
->data
.driver_location
;
1974 comp
= var
->data
.location_frac
;
1975 mode
= var
->data
.mode
;
1977 get_deref_offset(ctx
, deref
, vs_in
, NULL
, NULL
,
1978 &const_index
, &indir_index
);
1980 if (var
->data
.compact
) {
1982 const_index
+= comp
;
1987 if (instr
->dest
.ssa
.bit_size
== 64 &&
1988 (deref
->mode
== nir_var_shader_in
||
1989 deref
->mode
== nir_var_shader_out
||
1990 deref
->mode
== nir_var_function_temp
))
1994 case nir_var_shader_in
:
1995 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
1996 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
1997 return load_tess_varyings(ctx
, instr
, true);
2000 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
2001 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
2002 LLVMValueRef indir_index
;
2003 unsigned const_index
, vertex_index
;
2004 get_deref_offset(ctx
, deref
, false, &vertex_index
, NULL
,
2005 &const_index
, &indir_index
);
2007 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
2008 var
->data
.driver_location
,
2009 var
->data
.location_frac
,
2010 instr
->num_components
, vertex_index
, const_index
, type
);
2013 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2015 unsigned count
= glsl_count_attribute_slots(
2017 ctx
->stage
== MESA_SHADER_VERTEX
);
2019 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2020 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
2021 stride
, false, true);
2023 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2027 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
2030 case nir_var_function_temp
:
2031 for (unsigned chan
= 0; chan
< ve
; chan
++) {
2033 unsigned count
= glsl_count_attribute_slots(
2036 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2037 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2038 stride
, true, true);
2040 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2044 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
2048 case nir_var_mem_shared
: {
2049 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2050 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2051 return LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2052 get_def_type(ctx
, &instr
->dest
.ssa
),
2055 case nir_var_shader_out
:
2056 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2057 return load_tess_varyings(ctx
, instr
, false);
2060 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2062 unsigned count
= glsl_count_attribute_slots(
2065 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2066 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2067 stride
, true, true);
2069 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2073 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
2074 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
2079 case nir_var_mem_global
: {
2080 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2081 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2082 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2083 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2085 LLVMTypeRef result_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2086 if (stride
!= natural_stride
) {
2087 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(result_type
),
2088 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2089 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2091 for (unsigned i
= 0; i
< instr
->dest
.ssa
.num_components
; ++i
) {
2092 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, i
* stride
/ natural_stride
, 0);
2093 values
[i
] = LLVMBuildLoad(ctx
->ac
.builder
,
2094 ac_build_gep_ptr(&ctx
->ac
, address
, offset
), "");
2096 return ac_build_gather_values(&ctx
->ac
, values
, instr
->dest
.ssa
.num_components
);
2098 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2099 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2100 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2101 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2106 unreachable("unhandle variable mode");
2108 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
2109 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2113 visit_store_var(struct ac_nir_context
*ctx
,
2114 nir_intrinsic_instr
*instr
)
2116 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2117 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2119 LLVMValueRef temp_ptr
, value
;
2122 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
2123 int writemask
= instr
->const_index
[0];
2124 LLVMValueRef indir_index
;
2125 unsigned const_index
;
2128 get_deref_offset(ctx
, deref
, false,
2129 NULL
, NULL
, &const_index
, &indir_index
);
2130 idx
= var
->data
.driver_location
;
2131 comp
= var
->data
.location_frac
;
2133 if (var
->data
.compact
) {
2134 const_index
+= comp
;
2139 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64 &&
2140 (deref
->mode
== nir_var_shader_out
||
2141 deref
->mode
== nir_var_function_temp
)) {
2143 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2144 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2147 writemask
= widen_mask(writemask
, 2);
2150 writemask
= writemask
<< comp
;
2152 switch (deref
->mode
) {
2153 case nir_var_shader_out
:
2155 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2156 LLVMValueRef vertex_index
= NULL
;
2157 LLVMValueRef indir_index
= NULL
;
2158 unsigned const_index
= 0;
2159 const bool is_patch
= var
->data
.patch
;
2161 get_deref_offset(ctx
, deref
, false, NULL
,
2162 is_patch
? NULL
: &vertex_index
,
2163 &const_index
, &indir_index
);
2165 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2166 vertex_index
, indir_index
,
2167 const_index
, src
, writemask
);
2171 for (unsigned chan
= 0; chan
< 8; chan
++) {
2173 if (!(writemask
& (1 << chan
)))
2176 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2178 if (var
->data
.compact
)
2181 unsigned count
= glsl_count_attribute_slots(
2184 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2185 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2186 stride
, true, true);
2188 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2189 value
, indir_index
, "");
2190 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2191 count
, stride
, tmp_vec
);
2194 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2196 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2200 case nir_var_function_temp
:
2201 for (unsigned chan
= 0; chan
< 8; chan
++) {
2202 if (!(writemask
& (1 << chan
)))
2205 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2207 unsigned count
= glsl_count_attribute_slots(
2210 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2211 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2214 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2215 value
, indir_index
, "");
2216 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2219 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2221 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2226 case nir_var_mem_global
:
2227 case nir_var_mem_shared
: {
2228 int writemask
= instr
->const_index
[0];
2229 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2230 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2232 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2233 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2234 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2236 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2237 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2238 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2240 if (writemask
== (1u << ac_get_llvm_num_components(val
)) - 1 &&
2241 stride
== natural_stride
) {
2242 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2243 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2244 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2246 val
= LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2247 LLVMGetElementType(LLVMTypeOf(address
)), "");
2248 LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2250 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(LLVMTypeOf(val
)),
2251 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2252 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2253 for (unsigned chan
= 0; chan
< 4; chan
++) {
2254 if (!(writemask
& (1 << chan
)))
2257 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, chan
* stride
/ natural_stride
, 0);
2259 LLVMValueRef ptr
= ac_build_gep_ptr(&ctx
->ac
, address
, offset
);
2260 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2262 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2263 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2264 LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2275 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2278 case GLSL_SAMPLER_DIM_BUF
:
2280 case GLSL_SAMPLER_DIM_1D
:
2281 return array
? 2 : 1;
2282 case GLSL_SAMPLER_DIM_2D
:
2283 return array
? 3 : 2;
2284 case GLSL_SAMPLER_DIM_MS
:
2285 return array
? 4 : 3;
2286 case GLSL_SAMPLER_DIM_3D
:
2287 case GLSL_SAMPLER_DIM_CUBE
:
2289 case GLSL_SAMPLER_DIM_RECT
:
2290 case GLSL_SAMPLER_DIM_SUBPASS
:
2292 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2301 /* Adjust the sample index according to FMASK.
2303 * For uncompressed MSAA surfaces, FMASK should return 0x76543210,
2304 * which is the identity mapping. Each nibble says which physical sample
2305 * should be fetched to get that sample.
2307 * For example, 0x11111100 means there are only 2 samples stored and
2308 * the second sample covers 3/4 of the pixel. When reading samples 0
2309 * and 1, return physical sample 0 (determined by the first two 0s
2310 * in FMASK), otherwise return physical sample 1.
2312 * The sample index should be adjusted as follows:
2313 * sample_index = (fmask >> (sample_index * 4)) & 0xF;
2315 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2316 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2317 LLVMValueRef coord_z
,
2318 LLVMValueRef sample_index
,
2319 LLVMValueRef fmask_desc_ptr
)
2321 struct ac_image_args args
= {0};
2324 args
.coords
[0] = coord_x
;
2325 args
.coords
[1] = coord_y
;
2327 args
.coords
[2] = coord_z
;
2329 args
.opcode
= ac_image_load
;
2330 args
.dim
= coord_z
? ac_image_2darray
: ac_image_2d
;
2331 args
.resource
= fmask_desc_ptr
;
2333 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2335 res
= ac_build_image_opcode(ctx
, &args
);
2337 res
= ac_to_integer(ctx
, res
);
2338 LLVMValueRef four
= LLVMConstInt(ctx
->i32
, 4, false);
2339 LLVMValueRef F
= LLVMConstInt(ctx
->i32
, 0xf, false);
2341 LLVMValueRef fmask
= LLVMBuildExtractElement(ctx
->builder
,
2345 LLVMValueRef sample_index4
=
2346 LLVMBuildMul(ctx
->builder
, sample_index
, four
, "");
2347 LLVMValueRef shifted_fmask
=
2348 LLVMBuildLShr(ctx
->builder
, fmask
, sample_index4
, "");
2349 LLVMValueRef final_sample
=
2350 LLVMBuildAnd(ctx
->builder
, shifted_fmask
, F
, "");
2352 /* Don't rewrite the sample index if WORD1.DATA_FORMAT of the FMASK
2353 * resource descriptor is 0 (invalid),
2355 LLVMValueRef fmask_desc
=
2356 LLVMBuildBitCast(ctx
->builder
, fmask_desc_ptr
,
2359 LLVMValueRef fmask_word1
=
2360 LLVMBuildExtractElement(ctx
->builder
, fmask_desc
,
2363 LLVMValueRef word1_is_nonzero
=
2364 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
,
2365 fmask_word1
, ctx
->i32_0
, "");
2367 /* Replace the MSAA sample index. */
2369 LLVMBuildSelect(ctx
->builder
, word1_is_nonzero
,
2370 final_sample
, sample_index
, "");
2371 return sample_index
;
2374 static nir_deref_instr
*get_image_deref(const nir_intrinsic_instr
*instr
)
2376 assert(instr
->src
[0].is_ssa
);
2377 return nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2380 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2381 const nir_intrinsic_instr
*instr
,
2382 enum ac_descriptor_type desc_type
,
2385 nir_deref_instr
*deref_instr
=
2386 instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
?
2387 nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
) : NULL
;
2389 return get_sampler_desc(ctx
, deref_instr
, desc_type
, &instr
->instr
, true, write
);
2392 static void get_image_coords(struct ac_nir_context
*ctx
,
2393 const nir_intrinsic_instr
*instr
,
2394 struct ac_image_args
*args
,
2395 enum glsl_sampler_dim dim
,
2398 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2399 LLVMValueRef masks
[] = {
2400 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2401 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2403 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2406 bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2407 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2408 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2409 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2410 bool gfx9_1d
= ctx
->ac
.chip_class
>= GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2411 count
= image_type_to_components_count(dim
, is_array
);
2413 if (is_ms
&& (instr
->intrinsic
== nir_intrinsic_image_deref_load
||
2414 instr
->intrinsic
== nir_intrinsic_bindless_image_load
)) {
2415 LLVMValueRef fmask_load_address
[3];
2418 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2419 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2421 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2423 fmask_load_address
[2] = NULL
;
2425 for (chan
= 0; chan
< 2; ++chan
)
2426 fmask_load_address
[chan
] =
2427 LLVMBuildAdd(ctx
->ac
.builder
, fmask_load_address
[chan
],
2428 LLVMBuildFPToUI(ctx
->ac
.builder
, ctx
->abi
->frag_pos
[chan
],
2429 ctx
->ac
.i32
, ""), "");
2430 fmask_load_address
[2] = ac_to_integer(&ctx
->ac
, ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)]);
2432 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2433 fmask_load_address
[0],
2434 fmask_load_address
[1],
2435 fmask_load_address
[2],
2437 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2438 AC_DESC_FMASK
, &instr
->instr
, false, false));
2440 if (count
== 1 && !gfx9_1d
) {
2441 if (instr
->src
[1].ssa
->num_components
)
2442 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2444 args
->coords
[0] = src0
;
2449 for (chan
= 0; chan
< count
; ++chan
) {
2450 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2453 for (chan
= 0; chan
< 2; ++chan
) {
2454 args
->coords
[chan
] = LLVMBuildAdd(
2455 ctx
->ac
.builder
, args
->coords
[chan
],
2457 ctx
->ac
.builder
, ctx
->abi
->frag_pos
[chan
],
2458 ctx
->ac
.i32
, ""), "");
2460 args
->coords
[2] = ac_to_integer(&ctx
->ac
,
2461 ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)]);
2467 args
->coords
[2] = args
->coords
[1];
2468 args
->coords
[1] = ctx
->ac
.i32_0
;
2470 args
->coords
[1] = ctx
->ac
.i32_0
;
2475 args
->coords
[count
] = sample_index
;
2481 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2482 const nir_intrinsic_instr
*instr
, bool write
)
2484 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, write
);
2485 if (ctx
->abi
->gfx9_stride_size_workaround
) {
2486 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2487 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2488 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2490 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2491 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2492 elem_count
, stride
, "");
2494 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2495 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2500 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2501 const nir_intrinsic_instr
*instr
,
2506 enum glsl_sampler_dim dim
;
2507 enum gl_access_qualifier access
;
2510 dim
= nir_intrinsic_image_dim(instr
);
2511 access
= nir_intrinsic_access(instr
);
2512 is_array
= nir_intrinsic_image_array(instr
);
2514 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2515 const struct glsl_type
*type
= image_deref
->type
;
2516 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2517 dim
= glsl_get_sampler_dim(type
);
2518 access
= var
->data
.image
.access
;
2519 is_array
= glsl_sampler_type_is_array(type
);
2522 struct ac_image_args args
= {};
2524 args
.cache_policy
= get_cache_policy(ctx
, access
, false, false);
2526 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2527 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2528 unsigned num_channels
= util_last_bit(mask
);
2529 LLVMValueRef rsrc
, vindex
;
2531 rsrc
= get_image_buffer_descriptor(ctx
, instr
, false);
2532 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2535 /* TODO: set "can_speculate" when OpenGL needs it. */
2536 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2537 ctx
->ac
.i32_0
, num_channels
,
2538 !!(args
.cache_policy
& ac_glc
),
2540 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2542 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2543 res
= ac_to_integer(&ctx
->ac
, res
);
2545 args
.opcode
= ac_image_load
;
2546 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2547 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2548 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2550 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2552 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2554 return ac_to_integer(&ctx
->ac
, res
);
2557 static void visit_image_store(struct ac_nir_context
*ctx
,
2558 nir_intrinsic_instr
*instr
,
2563 enum glsl_sampler_dim dim
;
2564 enum gl_access_qualifier access
;
2567 dim
= nir_intrinsic_image_dim(instr
);
2568 access
= nir_intrinsic_access(instr
);
2569 is_array
= nir_intrinsic_image_array(instr
);
2571 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2572 const struct glsl_type
*type
= image_deref
->type
;
2573 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2574 dim
= glsl_get_sampler_dim(type
);
2575 access
= var
->data
.image
.access
;
2576 is_array
= glsl_sampler_type_is_array(type
);
2579 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
2580 struct ac_image_args args
= {};
2582 args
.cache_policy
= get_cache_policy(ctx
, access
, true, writeonly_memory
);
2584 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2585 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, true);
2586 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2587 unsigned src_channels
= ac_get_llvm_num_components(src
);
2588 LLVMValueRef vindex
;
2590 if (src_channels
== 3)
2591 src
= ac_build_expand_to_vec4(&ctx
->ac
, src
, 3);
2593 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2594 get_src(ctx
, instr
->src
[1]),
2597 ac_build_buffer_store_format(&ctx
->ac
, rsrc
, src
, vindex
,
2598 ctx
->ac
.i32_0
, src_channels
,
2599 args
.cache_policy
& ac_glc
,
2602 args
.opcode
= ac_image_store
;
2603 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2604 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2605 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2606 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2609 ac_build_image_opcode(&ctx
->ac
, &args
);
2614 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2615 const nir_intrinsic_instr
*instr
,
2618 LLVMValueRef params
[7];
2619 int param_count
= 0;
2621 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
||
2622 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_comp_swap
;
2623 const char *atomic_name
;
2624 char intrinsic_name
[64];
2625 enum ac_atomic_op atomic_subop
;
2626 MAYBE_UNUSED
int length
;
2628 enum glsl_sampler_dim dim
;
2632 if (instr
->intrinsic
== nir_intrinsic_image_atomic_min
||
2633 instr
->intrinsic
== nir_intrinsic_image_atomic_max
) {
2634 const GLenum format
= nir_intrinsic_format(instr
);
2635 assert(format
== GL_R32UI
|| format
== GL_R32I
);
2636 is_unsigned
= format
== GL_R32UI
;
2638 dim
= nir_intrinsic_image_dim(instr
);
2639 is_array
= nir_intrinsic_image_array(instr
);
2641 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2642 is_unsigned
= glsl_get_sampler_result_type(type
) == GLSL_TYPE_UINT
;
2643 dim
= glsl_get_sampler_dim(type
);
2644 is_array
= glsl_sampler_type_is_array(type
);
2647 switch (instr
->intrinsic
) {
2648 case nir_intrinsic_bindless_image_atomic_add
:
2649 case nir_intrinsic_image_deref_atomic_add
:
2650 atomic_name
= "add";
2651 atomic_subop
= ac_atomic_add
;
2653 case nir_intrinsic_bindless_image_atomic_min
:
2654 case nir_intrinsic_image_deref_atomic_min
:
2655 atomic_name
= is_unsigned
? "umin" : "smin";
2656 atomic_subop
= is_unsigned
? ac_atomic_umin
: ac_atomic_smin
;
2658 case nir_intrinsic_bindless_image_atomic_max
:
2659 case nir_intrinsic_image_deref_atomic_max
:
2660 atomic_name
= is_unsigned
? "umax" : "smax";
2661 atomic_subop
= is_unsigned
? ac_atomic_umax
: ac_atomic_smax
;
2663 case nir_intrinsic_bindless_image_atomic_and
:
2664 case nir_intrinsic_image_deref_atomic_and
:
2665 atomic_name
= "and";
2666 atomic_subop
= ac_atomic_and
;
2668 case nir_intrinsic_bindless_image_atomic_or
:
2669 case nir_intrinsic_image_deref_atomic_or
:
2671 atomic_subop
= ac_atomic_or
;
2673 case nir_intrinsic_bindless_image_atomic_xor
:
2674 case nir_intrinsic_image_deref_atomic_xor
:
2675 atomic_name
= "xor";
2676 atomic_subop
= ac_atomic_xor
;
2678 case nir_intrinsic_bindless_image_atomic_exchange
:
2679 case nir_intrinsic_image_deref_atomic_exchange
:
2680 atomic_name
= "swap";
2681 atomic_subop
= ac_atomic_swap
;
2683 case nir_intrinsic_bindless_image_atomic_comp_swap
:
2684 case nir_intrinsic_image_deref_atomic_comp_swap
:
2685 atomic_name
= "cmpswap";
2686 atomic_subop
= 0; /* not used */
2693 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
2694 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
2696 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2697 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, true);
2698 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2699 ctx
->ac
.i32_0
, ""); /* vindex */
2700 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
2701 if (HAVE_LLVM
>= 0x800) {
2702 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
2703 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
2705 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2706 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
2708 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
2710 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2711 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
2714 assert(length
< sizeof(intrinsic_name
));
2715 return ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
2716 params
, param_count
, 0);
2718 struct ac_image_args args
= {};
2719 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
2720 args
.atomic
= atomic_subop
;
2721 args
.data
[0] = params
[0];
2723 args
.data
[1] = params
[1];
2724 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2725 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2726 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2728 return ac_build_image_opcode(&ctx
->ac
, &args
);
2732 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
2733 const nir_intrinsic_instr
*instr
,
2736 enum glsl_sampler_dim dim
;
2739 dim
= nir_intrinsic_image_dim(instr
);
2740 is_array
= nir_intrinsic_image_array(instr
);
2742 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2743 dim
= glsl_get_sampler_dim(type
);
2744 is_array
= glsl_sampler_type_is_array(type
);
2747 struct ac_image_args args
= { 0 };
2748 args
.dim
= get_ac_sampler_dim(&ctx
->ac
, dim
, is_array
);
2750 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2751 args
.opcode
= ac_image_get_resinfo
;
2752 args
.lod
= ctx
->ac
.i32_0
;
2753 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2755 return ac_build_image_opcode(&ctx
->ac
, &args
);
2758 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
2759 const nir_intrinsic_instr
*instr
,
2764 enum glsl_sampler_dim dim
;
2767 dim
= nir_intrinsic_image_dim(instr
);
2768 is_array
= nir_intrinsic_image_array(instr
);
2770 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2771 dim
= glsl_get_sampler_dim(type
);
2772 is_array
= glsl_sampler_type_is_array(type
);
2775 if (dim
== GLSL_SAMPLER_DIM_BUF
)
2776 return get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, false), true);
2778 struct ac_image_args args
= { 0 };
2780 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2782 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2783 args
.opcode
= ac_image_get_resinfo
;
2784 args
.lod
= ctx
->ac
.i32_0
;
2785 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2787 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2789 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
2791 if (dim
== GLSL_SAMPLER_DIM_CUBE
&& is_array
) {
2792 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
2793 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2794 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
2795 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
2797 if (ctx
->ac
.chip_class
>= GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
&& is_array
) {
2798 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2799 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
2806 static void emit_membar(struct ac_llvm_context
*ac
,
2807 const nir_intrinsic_instr
*instr
)
2809 unsigned waitcnt
= NOOP_WAITCNT
;
2811 switch (instr
->intrinsic
) {
2812 case nir_intrinsic_memory_barrier
:
2813 case nir_intrinsic_group_memory_barrier
:
2814 waitcnt
&= VM_CNT
& LGKM_CNT
;
2816 case nir_intrinsic_memory_barrier_atomic_counter
:
2817 case nir_intrinsic_memory_barrier_buffer
:
2818 case nir_intrinsic_memory_barrier_image
:
2821 case nir_intrinsic_memory_barrier_shared
:
2822 waitcnt
&= LGKM_CNT
;
2827 if (waitcnt
!= NOOP_WAITCNT
)
2828 ac_build_waitcnt(ac
, waitcnt
);
2831 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
2833 /* SI only (thanks to a hw bug workaround):
2834 * The real barrier instruction isn’t needed, because an entire patch
2835 * always fits into a single wave.
2837 if (ac
->chip_class
== SI
&& stage
== MESA_SHADER_TESS_CTRL
) {
2838 ac_build_waitcnt(ac
, LGKM_CNT
& VM_CNT
);
2841 ac_build_s_barrier(ac
);
2844 static void emit_discard(struct ac_nir_context
*ctx
,
2845 const nir_intrinsic_instr
*instr
)
2849 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
2850 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2851 get_src(ctx
, instr
->src
[0]),
2854 assert(instr
->intrinsic
== nir_intrinsic_discard
);
2855 cond
= ctx
->ac
.i1false
;
2858 ctx
->abi
->emit_kill(ctx
->abi
, cond
);
2862 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
2864 LLVMValueRef result
;
2865 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
2866 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2867 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2869 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
2873 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
2875 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2876 LLVMValueRef result
;
2877 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2878 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2879 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
2881 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
2886 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
2888 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2889 return LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2890 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
2892 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
2897 visit_first_invocation(struct ac_nir_context
*ctx
)
2899 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
2901 /* The second argument is whether cttz(0) should be defined, but we do not care. */
2902 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
2903 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
,
2905 ctx
->ac
.i64
, args
, 2,
2906 AC_FUNC_ATTR_NOUNWIND
|
2907 AC_FUNC_ATTR_READNONE
);
2909 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
2913 visit_load_shared(struct ac_nir_context
*ctx
,
2914 const nir_intrinsic_instr
*instr
)
2916 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
2918 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
2920 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
2921 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2922 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
2923 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
2926 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
2927 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2931 visit_store_shared(struct ac_nir_context
*ctx
,
2932 const nir_intrinsic_instr
*instr
)
2934 LLVMValueRef derived_ptr
, data
,index
;
2935 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2937 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1]);
2938 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
2940 int writemask
= nir_intrinsic_write_mask(instr
);
2941 for (int chan
= 0; chan
< 4; chan
++) {
2942 if (!(writemask
& (1 << chan
))) {
2945 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2946 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2947 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
2948 LLVMBuildStore(builder
, data
, derived_ptr
);
2952 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
2953 const nir_intrinsic_instr
*instr
,
2954 LLVMValueRef ptr
, int src_idx
)
2956 LLVMValueRef result
;
2957 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
2959 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
2960 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
2961 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
2962 result
= LLVMBuildAtomicCmpXchg(ctx
->ac
.builder
,
2964 LLVMAtomicOrderingSequentiallyConsistent
,
2965 LLVMAtomicOrderingSequentiallyConsistent
,
2967 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
2969 LLVMAtomicRMWBinOp op
;
2970 switch (instr
->intrinsic
) {
2971 case nir_intrinsic_shared_atomic_add
:
2972 case nir_intrinsic_deref_atomic_add
:
2973 op
= LLVMAtomicRMWBinOpAdd
;
2975 case nir_intrinsic_shared_atomic_umin
:
2976 case nir_intrinsic_deref_atomic_umin
:
2977 op
= LLVMAtomicRMWBinOpUMin
;
2979 case nir_intrinsic_shared_atomic_umax
:
2980 case nir_intrinsic_deref_atomic_umax
:
2981 op
= LLVMAtomicRMWBinOpUMax
;
2983 case nir_intrinsic_shared_atomic_imin
:
2984 case nir_intrinsic_deref_atomic_imin
:
2985 op
= LLVMAtomicRMWBinOpMin
;
2987 case nir_intrinsic_shared_atomic_imax
:
2988 case nir_intrinsic_deref_atomic_imax
:
2989 op
= LLVMAtomicRMWBinOpMax
;
2991 case nir_intrinsic_shared_atomic_and
:
2992 case nir_intrinsic_deref_atomic_and
:
2993 op
= LLVMAtomicRMWBinOpAnd
;
2995 case nir_intrinsic_shared_atomic_or
:
2996 case nir_intrinsic_deref_atomic_or
:
2997 op
= LLVMAtomicRMWBinOpOr
;
2999 case nir_intrinsic_shared_atomic_xor
:
3000 case nir_intrinsic_deref_atomic_xor
:
3001 op
= LLVMAtomicRMWBinOpXor
;
3003 case nir_intrinsic_shared_atomic_exchange
:
3004 case nir_intrinsic_deref_atomic_exchange
:
3005 op
= LLVMAtomicRMWBinOpXchg
;
3011 result
= LLVMBuildAtomicRMW(ctx
->ac
.builder
, op
, ptr
, ac_to_integer(&ctx
->ac
, src
),
3012 LLVMAtomicOrderingSequentiallyConsistent
,
3018 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
3020 LLVMValueRef values
[2];
3021 LLVMValueRef pos
[2];
3023 pos
[0] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[0]);
3024 pos
[1] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[1]);
3026 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
3027 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
3028 return ac_build_gather_values(&ctx
->ac
, values
, 2);
3031 static LLVMValueRef
visit_interp(struct ac_nir_context
*ctx
,
3032 const nir_intrinsic_instr
*instr
)
3034 LLVMValueRef result
[4];
3035 LLVMValueRef interp_param
;
3038 LLVMValueRef src_c0
= NULL
;
3039 LLVMValueRef src_c1
= NULL
;
3040 LLVMValueRef src0
= NULL
;
3042 nir_deref_instr
*deref_instr
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
3043 nir_variable
*var
= nir_deref_instr_get_variable(deref_instr
);
3044 int input_base
= ctx
->abi
->fs_input_attr_indices
[var
->data
.location
- VARYING_SLOT_VAR0
];
3045 switch (instr
->intrinsic
) {
3046 case nir_intrinsic_interp_deref_at_centroid
:
3047 location
= INTERP_CENTROID
;
3049 case nir_intrinsic_interp_deref_at_sample
:
3050 case nir_intrinsic_interp_deref_at_offset
:
3051 location
= INTERP_CENTER
;
3052 src0
= get_src(ctx
, instr
->src
[1]);
3058 if (instr
->intrinsic
== nir_intrinsic_interp_deref_at_offset
) {
3059 src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, ctx
->ac
.i32_0
, ""));
3060 src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, ctx
->ac
.i32_1
, ""));
3061 } else if (instr
->intrinsic
== nir_intrinsic_interp_deref_at_sample
) {
3062 LLVMValueRef sample_position
;
3063 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
3065 /* fetch sample ID */
3066 sample_position
= ctx
->abi
->load_sample_position(ctx
->abi
, src0
);
3068 src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
, ctx
->ac
.i32_0
, "");
3069 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
3070 src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
, ctx
->ac
.i32_1
, "");
3071 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
3073 interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, var
->data
.interpolation
, location
);
3075 if (location
== INTERP_CENTER
) {
3076 LLVMValueRef ij_out
[2];
3077 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
3080 * take the I then J parameters, and the DDX/Y for it, and
3081 * calculate the IJ inputs for the interpolator.
3082 * temp1 = ddx * offset/sample.x + I;
3083 * interp_param.I = ddy * offset/sample.y + temp1;
3084 * temp1 = ddx * offset/sample.x + J;
3085 * interp_param.J = ddy * offset/sample.y + temp1;
3087 for (unsigned i
= 0; i
< 2; i
++) {
3088 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
3089 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
3090 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3091 ddxy_out
, ix_ll
, "");
3092 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3093 ddxy_out
, iy_ll
, "");
3094 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3095 interp_param
, ix_ll
, "");
3096 LLVMValueRef temp1
, temp2
;
3098 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
3101 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
3102 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
3104 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
3105 temp2
, ctx
->ac
.i32
, "");
3107 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
3111 LLVMValueRef attrib_idx
= ctx
->ac
.i32_0
;
3112 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3113 if (deref_instr
->deref_type
== nir_deref_type_array
) {
3114 unsigned array_size
= glsl_count_attribute_slots(deref_instr
->type
, false);
3116 LLVMValueRef offset
;
3117 nir_const_value
*const_value
= nir_src_as_const_value(deref_instr
->arr
.index
);
3119 offset
= LLVMConstInt(ctx
->ac
.i32
, array_size
* const_value
->u32
[0], false);
3121 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3123 offset
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3124 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
3127 attrib_idx
= LLVMBuildAdd(ctx
->ac
.builder
, attrib_idx
, offset
, "");
3128 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3129 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
3130 LLVMValueRef offset
;
3131 unsigned sidx
= deref_instr
->strct
.index
;
3132 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3133 offset
= LLVMConstInt(ctx
->ac
.i32
, glsl_get_struct_location_offset(deref_instr
->type
, sidx
), false);
3134 attrib_idx
= LLVMBuildAdd(ctx
->ac
.builder
, attrib_idx
, offset
, "");
3136 unreachable("Unsupported deref type");
3141 unsigned attrib_size
= glsl_count_attribute_slots(var
->type
, false);
3142 for (chan
= 0; chan
< 4; chan
++) {
3143 LLVMValueRef gather
= LLVMGetUndef(LLVMVectorType(ctx
->ac
.f32
, attrib_size
));
3144 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, chan
, false);
3146 for (unsigned idx
= 0; idx
< attrib_size
; ++idx
) {
3147 LLVMValueRef v
, attr_number
;
3149 attr_number
= LLVMConstInt(ctx
->ac
.i32
, input_base
+ idx
, false);
3151 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
,
3152 interp_param
, ctx
->ac
.v2f32
, "");
3153 LLVMValueRef i
= LLVMBuildExtractElement(
3154 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_0
, "");
3155 LLVMValueRef j
= LLVMBuildExtractElement(
3156 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_1
, "");
3158 v
= ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3159 ctx
->abi
->prim_mask
, i
, j
);
3161 v
= ac_build_fs_interp_mov(&ctx
->ac
, LLVMConstInt(ctx
->ac
.i32
, 2, false),
3162 llvm_chan
, attr_number
, ctx
->abi
->prim_mask
);
3165 gather
= LLVMBuildInsertElement(ctx
->ac
.builder
, gather
, v
,
3166 LLVMConstInt(ctx
->ac
.i32
, idx
, false), "");
3169 result
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
, gather
, attrib_idx
, "");
3172 return ac_build_varying_gather_values(&ctx
->ac
, result
, instr
->num_components
,
3173 var
->data
.location_frac
);
3176 static void visit_intrinsic(struct ac_nir_context
*ctx
,
3177 nir_intrinsic_instr
*instr
)
3179 LLVMValueRef result
= NULL
;
3181 switch (instr
->intrinsic
) {
3182 case nir_intrinsic_ballot
:
3183 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3185 case nir_intrinsic_read_invocation
:
3186 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3187 get_src(ctx
, instr
->src
[1]));
3189 case nir_intrinsic_read_first_invocation
:
3190 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
3192 case nir_intrinsic_load_subgroup_invocation
:
3193 result
= ac_get_thread_id(&ctx
->ac
);
3195 case nir_intrinsic_load_work_group_id
: {
3196 LLVMValueRef values
[3];
3198 for (int i
= 0; i
< 3; i
++) {
3199 values
[i
] = ctx
->abi
->workgroup_ids
[i
] ?
3200 ctx
->abi
->workgroup_ids
[i
] : ctx
->ac
.i32_0
;
3203 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
3206 case nir_intrinsic_load_base_vertex
:
3207 case nir_intrinsic_load_first_vertex
:
3208 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
3210 case nir_intrinsic_load_local_group_size
:
3211 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
3213 case nir_intrinsic_load_vertex_id
:
3214 result
= LLVMBuildAdd(ctx
->ac
.builder
, ctx
->abi
->vertex_id
,
3215 ctx
->abi
->base_vertex
, "");
3217 case nir_intrinsic_load_vertex_id_zero_base
: {
3218 result
= ctx
->abi
->vertex_id
;
3221 case nir_intrinsic_load_local_invocation_id
: {
3222 result
= ctx
->abi
->local_invocation_ids
;
3225 case nir_intrinsic_load_base_instance
:
3226 result
= ctx
->abi
->start_instance
;
3228 case nir_intrinsic_load_draw_id
:
3229 result
= ctx
->abi
->draw_id
;
3231 case nir_intrinsic_load_view_index
:
3232 result
= ctx
->abi
->view_index
;
3234 case nir_intrinsic_load_invocation_id
:
3235 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
)
3236 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->tcs_rel_ids
, 8, 5);
3238 result
= ctx
->abi
->gs_invocation_id
;
3240 case nir_intrinsic_load_primitive_id
:
3241 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3242 result
= ctx
->abi
->gs_prim_id
;
3243 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3244 result
= ctx
->abi
->tcs_patch_id
;
3245 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3246 result
= ctx
->abi
->tes_patch_id
;
3248 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3250 case nir_intrinsic_load_sample_id
:
3251 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->ancillary
, 8, 4);
3253 case nir_intrinsic_load_sample_pos
:
3254 result
= load_sample_pos(ctx
);
3256 case nir_intrinsic_load_sample_mask_in
:
3257 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3259 case nir_intrinsic_load_frag_coord
: {
3260 LLVMValueRef values
[4] = {
3261 ctx
->abi
->frag_pos
[0],
3262 ctx
->abi
->frag_pos
[1],
3263 ctx
->abi
->frag_pos
[2],
3264 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
, ctx
->abi
->frag_pos
[3])
3266 result
= ac_to_integer(&ctx
->ac
,
3267 ac_build_gather_values(&ctx
->ac
, values
, 4));
3270 case nir_intrinsic_load_front_face
:
3271 result
= ctx
->abi
->front_face
;
3273 case nir_intrinsic_load_helper_invocation
:
3274 result
= ac_build_load_helper_invocation(&ctx
->ac
);
3276 case nir_intrinsic_load_instance_id
:
3277 result
= ctx
->abi
->instance_id
;
3279 case nir_intrinsic_load_num_work_groups
:
3280 result
= ctx
->abi
->num_work_groups
;
3282 case nir_intrinsic_load_local_invocation_index
:
3283 result
= visit_load_local_invocation_index(ctx
);
3285 case nir_intrinsic_load_subgroup_id
:
3286 result
= visit_load_subgroup_id(ctx
);
3288 case nir_intrinsic_load_num_subgroups
:
3289 result
= visit_load_num_subgroups(ctx
);
3291 case nir_intrinsic_first_invocation
:
3292 result
= visit_first_invocation(ctx
);
3294 case nir_intrinsic_load_push_constant
:
3295 result
= visit_load_push_constant(ctx
, instr
);
3297 case nir_intrinsic_vulkan_resource_index
: {
3298 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3299 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3300 unsigned binding
= nir_intrinsic_binding(instr
);
3302 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3306 case nir_intrinsic_vulkan_resource_reindex
:
3307 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3309 case nir_intrinsic_store_ssbo
:
3310 visit_store_ssbo(ctx
, instr
);
3312 case nir_intrinsic_load_ssbo
:
3313 result
= visit_load_buffer(ctx
, instr
);
3315 case nir_intrinsic_ssbo_atomic_add
:
3316 case nir_intrinsic_ssbo_atomic_imin
:
3317 case nir_intrinsic_ssbo_atomic_umin
:
3318 case nir_intrinsic_ssbo_atomic_imax
:
3319 case nir_intrinsic_ssbo_atomic_umax
:
3320 case nir_intrinsic_ssbo_atomic_and
:
3321 case nir_intrinsic_ssbo_atomic_or
:
3322 case nir_intrinsic_ssbo_atomic_xor
:
3323 case nir_intrinsic_ssbo_atomic_exchange
:
3324 case nir_intrinsic_ssbo_atomic_comp_swap
:
3325 result
= visit_atomic_ssbo(ctx
, instr
);
3327 case nir_intrinsic_load_ubo
:
3328 result
= visit_load_ubo_buffer(ctx
, instr
);
3330 case nir_intrinsic_get_buffer_size
:
3331 result
= visit_get_buffer_size(ctx
, instr
);
3333 case nir_intrinsic_load_deref
:
3334 result
= visit_load_var(ctx
, instr
);
3336 case nir_intrinsic_store_deref
:
3337 visit_store_var(ctx
, instr
);
3339 case nir_intrinsic_load_shared
:
3340 result
= visit_load_shared(ctx
, instr
);
3342 case nir_intrinsic_store_shared
:
3343 visit_store_shared(ctx
, instr
);
3345 case nir_intrinsic_bindless_image_samples
:
3346 result
= visit_image_samples(ctx
, instr
, true);
3348 case nir_intrinsic_image_deref_samples
:
3349 result
= visit_image_samples(ctx
, instr
, false);
3351 case nir_intrinsic_bindless_image_load
:
3352 result
= visit_image_load(ctx
, instr
, true);
3354 case nir_intrinsic_image_deref_load
:
3355 result
= visit_image_load(ctx
, instr
, false);
3357 case nir_intrinsic_bindless_image_store
:
3358 visit_image_store(ctx
, instr
, true);
3360 case nir_intrinsic_image_deref_store
:
3361 visit_image_store(ctx
, instr
, false);
3363 case nir_intrinsic_bindless_image_atomic_add
:
3364 case nir_intrinsic_bindless_image_atomic_min
:
3365 case nir_intrinsic_bindless_image_atomic_max
:
3366 case nir_intrinsic_bindless_image_atomic_and
:
3367 case nir_intrinsic_bindless_image_atomic_or
:
3368 case nir_intrinsic_bindless_image_atomic_xor
:
3369 case nir_intrinsic_bindless_image_atomic_exchange
:
3370 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3371 result
= visit_image_atomic(ctx
, instr
, true);
3373 case nir_intrinsic_image_deref_atomic_add
:
3374 case nir_intrinsic_image_deref_atomic_min
:
3375 case nir_intrinsic_image_deref_atomic_max
:
3376 case nir_intrinsic_image_deref_atomic_and
:
3377 case nir_intrinsic_image_deref_atomic_or
:
3378 case nir_intrinsic_image_deref_atomic_xor
:
3379 case nir_intrinsic_image_deref_atomic_exchange
:
3380 case nir_intrinsic_image_deref_atomic_comp_swap
:
3381 result
= visit_image_atomic(ctx
, instr
, false);
3383 case nir_intrinsic_bindless_image_size
:
3384 result
= visit_image_size(ctx
, instr
, true);
3386 case nir_intrinsic_image_deref_size
:
3387 result
= visit_image_size(ctx
, instr
, false);
3389 case nir_intrinsic_shader_clock
:
3390 result
= ac_build_shader_clock(&ctx
->ac
);
3392 case nir_intrinsic_discard
:
3393 case nir_intrinsic_discard_if
:
3394 emit_discard(ctx
, instr
);
3396 case nir_intrinsic_memory_barrier
:
3397 case nir_intrinsic_group_memory_barrier
:
3398 case nir_intrinsic_memory_barrier_atomic_counter
:
3399 case nir_intrinsic_memory_barrier_buffer
:
3400 case nir_intrinsic_memory_barrier_image
:
3401 case nir_intrinsic_memory_barrier_shared
:
3402 emit_membar(&ctx
->ac
, instr
);
3404 case nir_intrinsic_barrier
:
3405 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
3407 case nir_intrinsic_shared_atomic_add
:
3408 case nir_intrinsic_shared_atomic_imin
:
3409 case nir_intrinsic_shared_atomic_umin
:
3410 case nir_intrinsic_shared_atomic_imax
:
3411 case nir_intrinsic_shared_atomic_umax
:
3412 case nir_intrinsic_shared_atomic_and
:
3413 case nir_intrinsic_shared_atomic_or
:
3414 case nir_intrinsic_shared_atomic_xor
:
3415 case nir_intrinsic_shared_atomic_exchange
:
3416 case nir_intrinsic_shared_atomic_comp_swap
: {
3417 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
3418 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3421 case nir_intrinsic_deref_atomic_add
:
3422 case nir_intrinsic_deref_atomic_imin
:
3423 case nir_intrinsic_deref_atomic_umin
:
3424 case nir_intrinsic_deref_atomic_imax
:
3425 case nir_intrinsic_deref_atomic_umax
:
3426 case nir_intrinsic_deref_atomic_and
:
3427 case nir_intrinsic_deref_atomic_or
:
3428 case nir_intrinsic_deref_atomic_xor
:
3429 case nir_intrinsic_deref_atomic_exchange
:
3430 case nir_intrinsic_deref_atomic_comp_swap
: {
3431 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
3432 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3435 case nir_intrinsic_interp_deref_at_centroid
:
3436 case nir_intrinsic_interp_deref_at_sample
:
3437 case nir_intrinsic_interp_deref_at_offset
:
3438 result
= visit_interp(ctx
, instr
);
3440 case nir_intrinsic_emit_vertex
:
3441 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
3443 case nir_intrinsic_end_primitive
:
3444 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
3446 case nir_intrinsic_load_tess_coord
:
3447 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
3449 case nir_intrinsic_load_tess_level_outer
:
3450 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
);
3452 case nir_intrinsic_load_tess_level_inner
:
3453 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
);
3455 case nir_intrinsic_load_patch_vertices_in
:
3456 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
3458 case nir_intrinsic_vote_all
: {
3459 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3460 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3463 case nir_intrinsic_vote_any
: {
3464 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3465 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3468 case nir_intrinsic_shuffle
:
3469 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3470 get_src(ctx
, instr
->src
[1]));
3472 case nir_intrinsic_reduce
:
3473 result
= ac_build_reduce(&ctx
->ac
,
3474 get_src(ctx
, instr
->src
[0]),
3475 instr
->const_index
[0],
3476 instr
->const_index
[1]);
3478 case nir_intrinsic_inclusive_scan
:
3479 result
= ac_build_inclusive_scan(&ctx
->ac
,
3480 get_src(ctx
, instr
->src
[0]),
3481 instr
->const_index
[0]);
3483 case nir_intrinsic_exclusive_scan
:
3484 result
= ac_build_exclusive_scan(&ctx
->ac
,
3485 get_src(ctx
, instr
->src
[0]),
3486 instr
->const_index
[0]);
3488 case nir_intrinsic_quad_broadcast
: {
3489 unsigned lane
= nir_src_as_const_value(instr
->src
[1])->u32
[0];
3490 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3491 lane
, lane
, lane
, lane
);
3494 case nir_intrinsic_quad_swap_horizontal
:
3495 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
3497 case nir_intrinsic_quad_swap_vertical
:
3498 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
3500 case nir_intrinsic_quad_swap_diagonal
:
3501 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
3504 fprintf(stderr
, "Unknown intrinsic: ");
3505 nir_print_instr(&instr
->instr
, stderr
);
3506 fprintf(stderr
, "\n");
3510 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3514 static LLVMValueRef
get_bindless_index_from_uniform(struct ac_nir_context
*ctx
,
3515 unsigned base_index
,
3516 unsigned constant_index
,
3517 LLVMValueRef dynamic_index
)
3519 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, base_index
* 4, 0);
3520 LLVMValueRef index
= LLVMBuildAdd(ctx
->ac
.builder
, dynamic_index
,
3521 LLVMConstInt(ctx
->ac
.i32
, constant_index
, 0), "");
3523 /* Bindless uniforms are 64bit so multiple index by 8 */
3524 index
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i32
, 8, 0), "");
3525 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, index
, "");
3527 LLVMValueRef ubo_index
= ctx
->abi
->load_ubo(ctx
->abi
, ctx
->ac
.i32_0
);
3529 LLVMValueRef ret
= ac_build_buffer_load(&ctx
->ac
, ubo_index
, 1, NULL
, offset
,
3530 NULL
, 0, false, false, true, true);
3532 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ctx
->ac
.i32
, "");
3535 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
3536 nir_deref_instr
*deref_instr
,
3537 enum ac_descriptor_type desc_type
,
3538 const nir_instr
*instr
,
3539 bool image
, bool write
)
3541 LLVMValueRef index
= NULL
;
3542 unsigned constant_index
= 0;
3543 unsigned descriptor_set
;
3544 unsigned base_index
;
3545 bool bindless
= false;
3550 nir_intrinsic_instr
*img_instr
= nir_instr_as_intrinsic(instr
);
3553 index
= get_src(ctx
, img_instr
->src
[0]);
3555 nir_tex_instr
*tex_instr
= nir_instr_as_tex(instr
);
3556 int sampSrcIdx
= nir_tex_instr_src_index(tex_instr
,
3557 nir_tex_src_sampler_handle
);
3558 if (sampSrcIdx
!= -1) {
3561 index
= get_src(ctx
, tex_instr
->src
[sampSrcIdx
].src
);
3563 assert(tex_instr
&& !image
);
3564 base_index
= tex_instr
->sampler_index
;
3568 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3569 if (deref_instr
->deref_type
== nir_deref_type_array
) {
3570 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
3574 nir_const_value
*const_value
= nir_src_as_const_value(deref_instr
->arr
.index
);
3576 constant_index
+= array_size
* const_value
->u32
[0];
3578 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3580 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3581 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
3586 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
3589 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3590 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
3591 unsigned sidx
= deref_instr
->strct
.index
;
3592 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3593 constant_index
+= glsl_get_struct_location_offset(deref_instr
->type
, sidx
);
3595 unreachable("Unsupported deref type");
3598 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
3600 if (deref_instr
->var
->data
.bindless
) {
3601 /* For now just assert on unhandled variable types */
3602 assert(deref_instr
->var
->data
.mode
== nir_var_uniform
);
3604 base_index
= deref_instr
->var
->data
.driver_location
;
3607 index
= index
? index
: ctx
->ac
.i32_0
;
3608 index
= get_bindless_index_from_uniform(ctx
, base_index
,
3609 constant_index
, index
);
3611 base_index
= deref_instr
->var
->data
.binding
;
3614 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
3617 constant_index
, index
,
3618 desc_type
, image
, write
, bindless
);
3621 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
3624 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
3625 * filtering manually. The driver sets img7 to a mask clearing
3626 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
3627 * s_and_b32 samp0, samp0, img7
3630 * The ANISO_OVERRIDE sampler field enables this fix in TA.
3632 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
3633 LLVMValueRef res
, LLVMValueRef samp
)
3635 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3636 LLVMValueRef img7
, samp0
;
3638 if (ctx
->ac
.chip_class
>= VI
)
3641 img7
= LLVMBuildExtractElement(builder
, res
,
3642 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
3643 samp0
= LLVMBuildExtractElement(builder
, samp
,
3644 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3645 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
3646 return LLVMBuildInsertElement(builder
, samp
, samp0
,
3647 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3650 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
3651 nir_tex_instr
*instr
,
3652 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
3653 LLVMValueRef
*fmask_ptr
)
3655 nir_deref_instr
*texture_deref_instr
= NULL
;
3656 nir_deref_instr
*sampler_deref_instr
= NULL
;
3658 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3659 switch (instr
->src
[i
].src_type
) {
3660 case nir_tex_src_texture_deref
:
3661 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3663 case nir_tex_src_sampler_deref
:
3664 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3671 if (!sampler_deref_instr
)
3672 sampler_deref_instr
= texture_deref_instr
;
3674 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
)
3675 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_BUFFER
, &instr
->instr
, false, false);
3677 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_IMAGE
, &instr
->instr
, false, false);
3679 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, &instr
->instr
, false, false);
3680 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
3681 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
3683 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
3684 instr
->op
== nir_texop_samples_identical
))
3685 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
, &instr
->instr
, false, false);
3688 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
3691 coord
= ac_to_float(ctx
, coord
);
3692 coord
= ac_build_round(ctx
, coord
);
3693 coord
= ac_to_integer(ctx
, coord
);
3697 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
3699 LLVMValueRef result
= NULL
;
3700 struct ac_image_args args
= { 0 };
3701 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
3702 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
3703 unsigned offset_src
= 0;
3705 tex_fetch_ptrs(ctx
, instr
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
3707 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3708 switch (instr
->src
[i
].src_type
) {
3709 case nir_tex_src_coord
: {
3710 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
3711 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
3712 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
3715 case nir_tex_src_projector
:
3717 case nir_tex_src_comparator
:
3718 if (instr
->is_shadow
)
3719 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
3721 case nir_tex_src_offset
:
3722 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
3725 case nir_tex_src_bias
:
3726 if (instr
->op
== nir_texop_txb
)
3727 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
3729 case nir_tex_src_lod
: {
3730 nir_const_value
*val
= nir_src_as_const_value(instr
->src
[i
].src
);
3732 if (val
&& val
->i32
[0] == 0)
3733 args
.level_zero
= true;
3735 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
3738 case nir_tex_src_ms_index
:
3739 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
3741 case nir_tex_src_ms_mcs
:
3743 case nir_tex_src_ddx
:
3744 ddx
= get_src(ctx
, instr
->src
[i
].src
);
3746 case nir_tex_src_ddy
:
3747 ddy
= get_src(ctx
, instr
->src
[i
].src
);
3749 case nir_tex_src_texture_offset
:
3750 case nir_tex_src_sampler_offset
:
3751 case nir_tex_src_plane
:
3757 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
3758 result
= get_buffer_size(ctx
, args
.resource
, true);
3762 if (instr
->op
== nir_texop_texture_samples
) {
3763 LLVMValueRef res
, samples
, is_msaa
;
3764 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
3765 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
3766 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
3767 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
3768 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
3769 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
3770 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
3771 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
3772 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
3774 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
3775 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
3776 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
3777 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
3778 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
3780 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
3786 if (args
.offset
&& instr
->op
!= nir_texop_txf
) {
3787 LLVMValueRef offset
[3], pack
;
3788 for (unsigned chan
= 0; chan
< 3; ++chan
)
3789 offset
[chan
] = ctx
->ac
.i32_0
;
3791 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
3792 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
3793 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
3794 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
3795 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
3797 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
3798 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
3800 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
3801 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
3805 /* TC-compatible HTILE on radeonsi promotes Z16 and Z24 to Z32_FLOAT,
3806 * so the depth comparison value isn't clamped for Z16 and
3807 * Z24 anymore. Do it manually here.
3809 * It's unnecessary if the original texture format was
3810 * Z32_FLOAT, but we don't know that here.
3812 if (args
.compare
&& ctx
->ac
.chip_class
>= VI
&& ctx
->abi
->clamp_shadow_reference
)
3813 args
.compare
= ac_build_clamp(&ctx
->ac
, ac_to_float(&ctx
->ac
, args
.compare
));
3815 /* pack derivatives */
3817 int num_src_deriv_channels
, num_dest_deriv_channels
;
3818 switch (instr
->sampler_dim
) {
3819 case GLSL_SAMPLER_DIM_3D
:
3820 case GLSL_SAMPLER_DIM_CUBE
:
3821 num_src_deriv_channels
= 3;
3822 num_dest_deriv_channels
= 3;
3824 case GLSL_SAMPLER_DIM_2D
:
3826 num_src_deriv_channels
= 2;
3827 num_dest_deriv_channels
= 2;
3829 case GLSL_SAMPLER_DIM_1D
:
3830 num_src_deriv_channels
= 1;
3831 if (ctx
->ac
.chip_class
>= GFX9
) {
3832 num_dest_deriv_channels
= 2;
3834 num_dest_deriv_channels
= 1;
3839 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
3840 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
3841 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
3842 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
3843 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
3845 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
3846 args
.derivs
[i
] = ctx
->ac
.f32_0
;
3847 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
3851 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
3852 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
3853 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
3854 if (instr
->coord_components
== 3)
3855 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
3856 ac_prepare_cube_coords(&ctx
->ac
,
3857 instr
->op
== nir_texop_txd
, instr
->is_array
,
3858 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
3861 /* Texture coordinates fixups */
3862 if (instr
->coord_components
> 1 &&
3863 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
3865 instr
->op
!= nir_texop_txf
) {
3866 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
3869 if (instr
->coord_components
> 2 &&
3870 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
3871 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
3872 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
3873 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
3875 instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
3876 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
3879 if (ctx
->ac
.chip_class
>= GFX9
&&
3880 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
3881 instr
->op
!= nir_texop_lod
) {
3882 LLVMValueRef filler
;
3883 if (instr
->op
== nir_texop_txf
)
3884 filler
= ctx
->ac
.i32_0
;
3886 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
3888 if (instr
->is_array
)
3889 args
.coords
[2] = args
.coords
[1];
3890 args
.coords
[1] = filler
;
3893 /* Pack sample index */
3894 if (instr
->op
== nir_texop_txf_ms
&& sample_index
)
3895 args
.coords
[instr
->coord_components
] = sample_index
;
3897 if (instr
->op
== nir_texop_samples_identical
) {
3898 struct ac_image_args txf_args
= { 0 };
3899 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
3901 txf_args
.dmask
= 0xf;
3902 txf_args
.resource
= fmask_ptr
;
3903 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
3904 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
3906 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
3907 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
3911 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
&&
3912 instr
->op
!= nir_texop_txs
) {
3913 unsigned sample_chan
= instr
->is_array
? 3 : 2;
3914 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
3915 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
3916 instr
->is_array
? args
.coords
[2] : NULL
,
3917 args
.coords
[sample_chan
], fmask_ptr
);
3920 if (args
.offset
&& instr
->op
== nir_texop_txf
) {
3921 nir_const_value
*const_offset
=
3922 nir_src_as_const_value(instr
->src
[offset_src
].src
);
3923 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
3924 assert(const_offset
);
3925 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
3926 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
3927 args
.coords
[i
] = LLVMBuildAdd(
3928 ctx
->ac
.builder
, args
.coords
[i
],
3929 LLVMConstInt(ctx
->ac
.i32
, const_offset
->i32
[i
], false), "");
3934 /* TODO TG4 support */
3936 if (instr
->op
== nir_texop_tg4
) {
3937 if (instr
->is_shadow
)
3940 args
.dmask
= 1 << instr
->component
;
3943 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
)
3944 args
.dim
= get_ac_sampler_dim(&ctx
->ac
, instr
->sampler_dim
, instr
->is_array
);
3945 result
= build_tex_intrinsic(ctx
, instr
, &args
);
3947 if (instr
->op
== nir_texop_query_levels
)
3948 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
3949 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
3950 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
3951 instr
->op
!= nir_texop_tg4
)
3952 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
3953 else if (instr
->op
== nir_texop_txs
&&
3954 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
3956 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
3957 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
3958 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
3959 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
3960 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
3961 } else if (ctx
->ac
.chip_class
>= GFX9
&&
3962 instr
->op
== nir_texop_txs
&&
3963 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
3965 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
3966 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
3967 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
3969 } else if (instr
->dest
.ssa
.num_components
!= 4)
3970 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
3974 assert(instr
->dest
.is_ssa
);
3975 result
= ac_to_integer(&ctx
->ac
, result
);
3976 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3981 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
3983 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
3984 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
3986 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3987 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
3990 static void visit_post_phi(struct ac_nir_context
*ctx
,
3991 nir_phi_instr
*instr
,
3992 LLVMValueRef llvm_phi
)
3994 nir_foreach_phi_src(src
, instr
) {
3995 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
3996 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
3998 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
4002 static void phi_post_pass(struct ac_nir_context
*ctx
)
4004 hash_table_foreach(ctx
->phis
, entry
) {
4005 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
4006 (LLVMValueRef
)entry
->data
);
4011 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
4012 const nir_ssa_undef_instr
*instr
)
4014 unsigned num_components
= instr
->def
.num_components
;
4015 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
4018 if (num_components
== 1)
4019 undef
= LLVMGetUndef(type
);
4021 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
4023 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
4026 static void visit_jump(struct ac_llvm_context
*ctx
,
4027 const nir_jump_instr
*instr
)
4029 switch (instr
->type
) {
4030 case nir_jump_break
:
4031 ac_build_break(ctx
);
4033 case nir_jump_continue
:
4034 ac_build_continue(ctx
);
4037 fprintf(stderr
, "Unknown NIR jump instr: ");
4038 nir_print_instr(&instr
->instr
, stderr
);
4039 fprintf(stderr
, "\n");
4045 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
4046 enum glsl_base_type type
)
4050 case GLSL_TYPE_UINT
:
4051 case GLSL_TYPE_BOOL
:
4052 case GLSL_TYPE_SUBROUTINE
:
4054 case GLSL_TYPE_INT8
:
4055 case GLSL_TYPE_UINT8
:
4057 case GLSL_TYPE_INT16
:
4058 case GLSL_TYPE_UINT16
:
4060 case GLSL_TYPE_FLOAT
:
4062 case GLSL_TYPE_FLOAT16
:
4064 case GLSL_TYPE_INT64
:
4065 case GLSL_TYPE_UINT64
:
4067 case GLSL_TYPE_DOUBLE
:
4070 unreachable("unknown GLSL type");
4075 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
4076 const struct glsl_type
*type
)
4078 if (glsl_type_is_scalar(type
)) {
4079 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
4082 if (glsl_type_is_vector(type
)) {
4083 return LLVMVectorType(
4084 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
4085 glsl_get_vector_elements(type
));
4088 if (glsl_type_is_matrix(type
)) {
4089 return LLVMArrayType(
4090 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
4091 glsl_get_matrix_columns(type
));
4094 if (glsl_type_is_array(type
)) {
4095 return LLVMArrayType(
4096 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
4097 glsl_get_length(type
));
4100 assert(glsl_type_is_struct_or_ifc(type
));
4102 LLVMTypeRef member_types
[glsl_get_length(type
)];
4104 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
4106 glsl_to_llvm_type(ac
,
4107 glsl_get_struct_field(type
, i
));
4110 return LLVMStructTypeInContext(ac
->context
, member_types
,
4111 glsl_get_length(type
), false);
4114 static void visit_deref(struct ac_nir_context
*ctx
,
4115 nir_deref_instr
*instr
)
4117 if (instr
->mode
!= nir_var_mem_shared
&&
4118 instr
->mode
!= nir_var_mem_global
)
4121 LLVMValueRef result
= NULL
;
4122 switch(instr
->deref_type
) {
4123 case nir_deref_type_var
: {
4124 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
4125 result
= entry
->data
;
4128 case nir_deref_type_struct
:
4129 if (instr
->mode
== nir_var_mem_global
) {
4130 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4131 uint64_t offset
= glsl_get_struct_field_offset(parent
->type
,
4132 instr
->strct
.index
);
4133 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4134 LLVMConstInt(ctx
->ac
.i32
, offset
, 0));
4136 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4137 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
4140 case nir_deref_type_array
:
4141 if (instr
->mode
== nir_var_mem_global
) {
4142 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4143 unsigned stride
= glsl_get_explicit_stride(parent
->type
);
4145 if ((glsl_type_is_matrix(parent
->type
) &&
4146 glsl_matrix_type_is_row_major(parent
->type
)) ||
4147 (glsl_type_is_vector(parent
->type
) && stride
== 0))
4148 stride
= type_scalar_size_bytes(parent
->type
);
4151 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4152 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4153 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4155 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4157 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4159 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4160 get_src(ctx
, instr
->arr
.index
));
4163 case nir_deref_type_ptr_as_array
:
4164 if (instr
->mode
== nir_var_mem_global
) {
4165 unsigned stride
= nir_deref_instr_ptr_as_array_stride(instr
);
4167 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4168 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4169 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4171 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4173 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4175 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4176 get_src(ctx
, instr
->arr
.index
));
4179 case nir_deref_type_cast
: {
4180 result
= get_src(ctx
, instr
->parent
);
4182 /* We can't use the structs from LLVM because the shader
4183 * specifies its own offsets. */
4184 LLVMTypeRef pointee_type
= ctx
->ac
.i8
;
4185 if (instr
->mode
== nir_var_mem_shared
)
4186 pointee_type
= glsl_to_llvm_type(&ctx
->ac
, instr
->type
);
4188 unsigned address_space
;
4190 switch(instr
->mode
) {
4191 case nir_var_mem_shared
:
4192 address_space
= AC_ADDR_SPACE_LDS
;
4194 case nir_var_mem_global
:
4195 address_space
= AC_ADDR_SPACE_GLOBAL
;
4198 unreachable("Unhandled address space");
4201 LLVMTypeRef type
= LLVMPointerType(pointee_type
, address_space
);
4203 if (LLVMTypeOf(result
) != type
) {
4204 if (LLVMGetTypeKind(LLVMTypeOf(result
)) == LLVMVectorTypeKind
) {
4205 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
,
4208 result
= LLVMBuildIntToPtr(ctx
->ac
.builder
, result
,
4215 unreachable("Unhandled deref_instr deref type");
4218 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4221 static void visit_cf_list(struct ac_nir_context
*ctx
,
4222 struct exec_list
*list
);
4224 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
4226 LLVMBasicBlockRef llvm_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
4227 nir_foreach_instr(instr
, block
)
4229 switch (instr
->type
) {
4230 case nir_instr_type_alu
:
4231 visit_alu(ctx
, nir_instr_as_alu(instr
));
4233 case nir_instr_type_load_const
:
4234 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
4236 case nir_instr_type_intrinsic
:
4237 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
4239 case nir_instr_type_tex
:
4240 visit_tex(ctx
, nir_instr_as_tex(instr
));
4242 case nir_instr_type_phi
:
4243 visit_phi(ctx
, nir_instr_as_phi(instr
));
4245 case nir_instr_type_ssa_undef
:
4246 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
4248 case nir_instr_type_jump
:
4249 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
4251 case nir_instr_type_deref
:
4252 visit_deref(ctx
, nir_instr_as_deref(instr
));
4255 fprintf(stderr
, "Unknown NIR instr type: ");
4256 nir_print_instr(instr
, stderr
);
4257 fprintf(stderr
, "\n");
4262 _mesa_hash_table_insert(ctx
->defs
, block
, llvm_block
);
4265 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
4267 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
4269 nir_block
*then_block
=
4270 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
4272 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
4274 visit_cf_list(ctx
, &if_stmt
->then_list
);
4276 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
4277 nir_block
*else_block
=
4278 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
4280 ac_build_else(&ctx
->ac
, else_block
->index
);
4281 visit_cf_list(ctx
, &if_stmt
->else_list
);
4284 ac_build_endif(&ctx
->ac
, then_block
->index
);
4287 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
4289 nir_block
*first_loop_block
=
4290 (nir_block
*) exec_list_get_head(&loop
->body
);
4292 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
4294 visit_cf_list(ctx
, &loop
->body
);
4296 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
4299 static void visit_cf_list(struct ac_nir_context
*ctx
,
4300 struct exec_list
*list
)
4302 foreach_list_typed(nir_cf_node
, node
, node
, list
)
4304 switch (node
->type
) {
4305 case nir_cf_node_block
:
4306 visit_block(ctx
, nir_cf_node_as_block(node
));
4309 case nir_cf_node_if
:
4310 visit_if(ctx
, nir_cf_node_as_if(node
));
4313 case nir_cf_node_loop
:
4314 visit_loop(ctx
, nir_cf_node_as_loop(node
));
4324 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
4325 struct ac_shader_abi
*abi
,
4326 struct nir_shader
*nir
,
4327 struct nir_variable
*variable
,
4328 gl_shader_stage stage
)
4330 unsigned output_loc
= variable
->data
.driver_location
/ 4;
4331 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4333 /* tess ctrl has it's own load/store paths for outputs */
4334 if (stage
== MESA_SHADER_TESS_CTRL
)
4337 if (stage
== MESA_SHADER_VERTEX
||
4338 stage
== MESA_SHADER_TESS_EVAL
||
4339 stage
== MESA_SHADER_GEOMETRY
) {
4340 int idx
= variable
->data
.location
+ variable
->data
.index
;
4341 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
4342 int length
= nir
->info
.clip_distance_array_size
+
4343 nir
->info
.cull_distance_array_size
;
4352 bool is_16bit
= glsl_type_is_16bit(glsl_without_array(variable
->type
));
4353 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
4354 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
4355 for (unsigned chan
= 0; chan
< 4; chan
++) {
4356 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
4357 ac_build_alloca_undef(ctx
, type
, "");
4363 setup_locals(struct ac_nir_context
*ctx
,
4364 struct nir_function
*func
)
4367 ctx
->num_locals
= 0;
4368 nir_foreach_variable(variable
, &func
->impl
->locals
) {
4369 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4370 variable
->data
.driver_location
= ctx
->num_locals
* 4;
4371 variable
->data
.location_frac
= 0;
4372 ctx
->num_locals
+= attrib_count
;
4374 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
4378 for (i
= 0; i
< ctx
->num_locals
; i
++) {
4379 for (j
= 0; j
< 4; j
++) {
4380 ctx
->locals
[i
* 4 + j
] =
4381 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
4387 setup_shared(struct ac_nir_context
*ctx
,
4388 struct nir_shader
*nir
)
4390 nir_foreach_variable(variable
, &nir
->shared
) {
4391 LLVMValueRef shared
=
4392 LLVMAddGlobalInAddressSpace(
4393 ctx
->ac
.module
, glsl_to_llvm_type(&ctx
->ac
, variable
->type
),
4394 variable
->name
? variable
->name
: "",
4396 _mesa_hash_table_insert(ctx
->vars
, variable
, shared
);
4400 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
4401 struct nir_shader
*nir
)
4403 struct ac_nir_context ctx
= {};
4404 struct nir_function
*func
;
4409 ctx
.stage
= nir
->info
.stage
;
4411 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
4413 nir_foreach_variable(variable
, &nir
->outputs
)
4414 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
4417 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4418 _mesa_key_pointer_equal
);
4419 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4420 _mesa_key_pointer_equal
);
4421 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4422 _mesa_key_pointer_equal
);
4424 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
4426 nir_index_ssa_defs(func
->impl
);
4427 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
4429 setup_locals(&ctx
, func
);
4431 if (gl_shader_stage_is_compute(nir
->info
.stage
))
4432 setup_shared(&ctx
, nir
);
4434 visit_cf_list(&ctx
, &func
->impl
->body
);
4435 phi_post_pass(&ctx
);
4437 if (!gl_shader_stage_is_compute(nir
->info
.stage
))
4438 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
4443 ralloc_free(ctx
.defs
);
4444 ralloc_free(ctx
.phis
);
4445 ralloc_free(ctx
.vars
);
4449 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
4451 /* While it would be nice not to have this flag, we are constrained
4452 * by the reality that LLVM 5.0 doesn't have working VGPR indexing
4455 bool llvm_has_working_vgpr_indexing
= chip_class
<= VI
;
4457 /* TODO: Indirect indexing of GS inputs is unimplemented.
4459 * TCS and TES load inputs directly from LDS or offchip memory, so
4460 * indirect indexing is trivial.
4462 nir_variable_mode indirect_mask
= 0;
4463 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
4464 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
4465 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
4466 !llvm_has_working_vgpr_indexing
)) {
4467 indirect_mask
|= nir_var_shader_in
;
4469 if (!llvm_has_working_vgpr_indexing
&&
4470 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
4471 indirect_mask
|= nir_var_shader_out
;
4473 /* TODO: We shouldn't need to do this, however LLVM isn't currently
4474 * smart enough to handle indirects without causing excess spilling
4475 * causing the gpu to hang.
4477 * See the following thread for more details of the problem:
4478 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
4480 indirect_mask
|= nir_var_function_temp
;
4482 nir_lower_indirect_derefs(nir
, indirect_mask
);
4486 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
4488 if (intrin
->intrinsic
!= nir_intrinsic_store_deref
)
4492 nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[0]));
4494 if (var
->data
.mode
!= nir_var_shader_out
)
4497 unsigned writemask
= 0;
4498 const int location
= var
->data
.location
;
4499 unsigned first_component
= var
->data
.location_frac
;
4500 unsigned num_comps
= intrin
->dest
.ssa
.num_components
;
4502 if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
4503 writemask
= ((1 << (num_comps
+ 1)) - 1) << first_component
;
4504 else if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
4505 writemask
= (((1 << (num_comps
+ 1)) - 1) << first_component
) << 4;
4511 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
4512 unsigned *cond_block_tf_writemask
,
4513 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
4515 switch (cf_node
->type
) {
4516 case nir_cf_node_block
: {
4517 nir_block
*block
= nir_cf_node_as_block(cf_node
);
4518 nir_foreach_instr(instr
, block
) {
4519 if (instr
->type
!= nir_instr_type_intrinsic
)
4522 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
4523 if (intrin
->intrinsic
== nir_intrinsic_barrier
) {
4525 /* If we find a barrier in nested control flow put this in the
4526 * too hard basket. In GLSL this is not possible but it is in
4530 *tessfactors_are_def_in_all_invocs
= false;
4534 /* The following case must be prevented:
4535 * gl_TessLevelInner = ...;
4537 * if (gl_InvocationID == 1)
4538 * gl_TessLevelInner = ...;
4540 * If you consider disjoint code segments separated by barriers, each
4541 * such segment that writes tess factor channels should write the same
4542 * channels in all codepaths within that segment.
4544 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
4545 /* Accumulate the result: */
4546 *tessfactors_are_def_in_all_invocs
&=
4547 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
4549 /* Analyze the next code segment from scratch. */
4550 *upper_block_tf_writemask
= 0;
4551 *cond_block_tf_writemask
= 0;
4554 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
4559 case nir_cf_node_if
: {
4560 unsigned then_tessfactor_writemask
= 0;
4561 unsigned else_tessfactor_writemask
= 0;
4563 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
4564 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
4565 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
4566 cond_block_tf_writemask
,
4567 tessfactors_are_def_in_all_invocs
, true);
4570 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
4571 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
4572 cond_block_tf_writemask
,
4573 tessfactors_are_def_in_all_invocs
, true);
4576 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
4577 /* If both statements write the same tess factor channels,
4578 * we can say that the upper block writes them too.
4580 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
4581 else_tessfactor_writemask
;
4582 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
4583 else_tessfactor_writemask
;
4588 case nir_cf_node_loop
: {
4589 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
4590 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
4591 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
4592 cond_block_tf_writemask
,
4593 tessfactors_are_def_in_all_invocs
, true);
4599 unreachable("unknown cf node type");
4604 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
4606 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
4608 /* The pass works as follows:
4609 * If all codepaths write tess factors, we can say that all
4610 * invocations define tess factors.
4612 * Each tess factor channel is tracked separately.
4614 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
4615 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
4617 /* Initial value = true. Here the pass will accumulate results from
4618 * multiple segments surrounded by barriers. If tess factors aren't
4619 * written at all, it's a shader bug and we don't care if this will be
4622 bool tessfactors_are_def_in_all_invocs
= true;
4624 nir_foreach_function(function
, nir
) {
4625 if (function
->impl
) {
4626 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
4627 scan_tess_ctrl(node
, &main_block_tf_writemask
,
4628 &cond_block_tf_writemask
,
4629 &tessfactors_are_def_in_all_invocs
,
4635 /* Accumulate the result for the last code segment separated by a
4638 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
4639 tessfactors_are_def_in_all_invocs
&=
4640 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
4643 return tessfactors_are_def_in_all_invocs
;