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
;
43 LLVMValueRef
*ssa_defs
;
45 struct hash_table
*defs
;
46 struct hash_table
*phis
;
47 struct hash_table
*vars
;
49 LLVMValueRef main_function
;
50 LLVMBasicBlockRef continue_block
;
51 LLVMBasicBlockRef break_block
;
57 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
58 nir_deref_instr
*deref_instr
,
59 enum ac_descriptor_type desc_type
,
60 const nir_instr
*instr
,
61 bool image
, bool write
);
64 build_store_values_extended(struct ac_llvm_context
*ac
,
67 unsigned value_stride
,
70 LLVMBuilderRef builder
= ac
->builder
;
73 for (i
= 0; i
< value_count
; i
++) {
74 LLVMValueRef ptr
= values
[i
* value_stride
];
75 LLVMValueRef index
= LLVMConstInt(ac
->i32
, i
, false);
76 LLVMValueRef value
= LLVMBuildExtractElement(builder
, vec
, index
, "");
77 LLVMBuildStore(builder
, value
, ptr
);
81 static enum ac_image_dim
82 get_ac_sampler_dim(const struct ac_llvm_context
*ctx
, enum glsl_sampler_dim dim
,
86 case GLSL_SAMPLER_DIM_1D
:
87 if (ctx
->chip_class
>= GFX9
)
88 return is_array
? ac_image_2darray
: ac_image_2d
;
89 return is_array
? ac_image_1darray
: ac_image_1d
;
90 case GLSL_SAMPLER_DIM_2D
:
91 case GLSL_SAMPLER_DIM_RECT
:
92 case GLSL_SAMPLER_DIM_EXTERNAL
:
93 return is_array
? ac_image_2darray
: ac_image_2d
;
94 case GLSL_SAMPLER_DIM_3D
:
96 case GLSL_SAMPLER_DIM_CUBE
:
98 case GLSL_SAMPLER_DIM_MS
:
99 return is_array
? ac_image_2darraymsaa
: ac_image_2dmsaa
;
100 case GLSL_SAMPLER_DIM_SUBPASS
:
101 return ac_image_2darray
;
102 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
103 return ac_image_2darraymsaa
;
105 unreachable("bad sampler dim");
109 static enum ac_image_dim
110 get_ac_image_dim(const struct ac_llvm_context
*ctx
, enum glsl_sampler_dim sdim
,
113 enum ac_image_dim dim
= get_ac_sampler_dim(ctx
, sdim
, is_array
);
115 if (dim
== ac_image_cube
||
116 (ctx
->chip_class
<= GFX8
&& dim
== ac_image_3d
))
117 dim
= ac_image_2darray
;
122 static LLVMTypeRef
get_def_type(struct ac_nir_context
*ctx
,
123 const nir_ssa_def
*def
)
125 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, def
->bit_size
);
126 if (def
->num_components
> 1) {
127 type
= LLVMVectorType(type
, def
->num_components
);
132 static LLVMValueRef
get_src(struct ac_nir_context
*nir
, nir_src src
)
135 return nir
->ssa_defs
[src
.ssa
->index
];
139 get_memory_ptr(struct ac_nir_context
*ctx
, nir_src src
)
141 LLVMValueRef ptr
= get_src(ctx
, src
);
142 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ctx
->ac
.lds
, &ptr
, 1, "");
143 int addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
145 return LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
146 LLVMPointerType(ctx
->ac
.i32
, addr_space
), "");
149 static LLVMBasicBlockRef
get_block(struct ac_nir_context
*nir
,
150 const struct nir_block
*b
)
152 struct hash_entry
*entry
= _mesa_hash_table_search(nir
->defs
, b
);
153 return (LLVMBasicBlockRef
)entry
->data
;
156 static LLVMValueRef
get_alu_src(struct ac_nir_context
*ctx
,
158 unsigned num_components
)
160 LLVMValueRef value
= get_src(ctx
, src
.src
);
161 bool need_swizzle
= false;
164 unsigned src_components
= ac_get_llvm_num_components(value
);
165 for (unsigned i
= 0; i
< num_components
; ++i
) {
166 assert(src
.swizzle
[i
] < src_components
);
167 if (src
.swizzle
[i
] != i
)
171 if (need_swizzle
|| num_components
!= src_components
) {
172 LLVMValueRef masks
[] = {
173 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[0], false),
174 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[1], false),
175 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[2], false),
176 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[3], false)};
178 if (src_components
> 1 && num_components
== 1) {
179 value
= LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
181 } else if (src_components
== 1 && num_components
> 1) {
182 LLVMValueRef values
[] = {value
, value
, value
, value
};
183 value
= ac_build_gather_values(&ctx
->ac
, values
, num_components
);
185 LLVMValueRef swizzle
= LLVMConstVector(masks
, num_components
);
186 value
= LLVMBuildShuffleVector(ctx
->ac
.builder
, value
, value
,
195 static LLVMValueRef
emit_int_cmp(struct ac_llvm_context
*ctx
,
196 LLVMIntPredicate pred
, LLVMValueRef src0
,
199 LLVMValueRef result
= LLVMBuildICmp(ctx
->builder
, pred
, src0
, src1
, "");
200 return LLVMBuildSelect(ctx
->builder
, result
,
201 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
205 static LLVMValueRef
emit_float_cmp(struct ac_llvm_context
*ctx
,
206 LLVMRealPredicate pred
, LLVMValueRef src0
,
210 src0
= ac_to_float(ctx
, src0
);
211 src1
= ac_to_float(ctx
, src1
);
212 result
= LLVMBuildFCmp(ctx
->builder
, pred
, src0
, src1
, "");
213 return LLVMBuildSelect(ctx
->builder
, result
,
214 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
218 static LLVMValueRef
emit_intrin_1f_param(struct ac_llvm_context
*ctx
,
220 LLVMTypeRef result_type
,
224 LLVMValueRef params
[] = {
225 ac_to_float(ctx
, src0
),
228 MAYBE_UNUSED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
229 ac_get_elem_bits(ctx
, result_type
));
230 assert(length
< sizeof(name
));
231 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 1, AC_FUNC_ATTR_READNONE
);
234 static LLVMValueRef
emit_intrin_2f_param(struct ac_llvm_context
*ctx
,
236 LLVMTypeRef result_type
,
237 LLVMValueRef src0
, LLVMValueRef src1
)
240 LLVMValueRef params
[] = {
241 ac_to_float(ctx
, src0
),
242 ac_to_float(ctx
, src1
),
245 MAYBE_UNUSED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
246 ac_get_elem_bits(ctx
, result_type
));
247 assert(length
< sizeof(name
));
248 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 2, AC_FUNC_ATTR_READNONE
);
251 static LLVMValueRef
emit_intrin_3f_param(struct ac_llvm_context
*ctx
,
253 LLVMTypeRef result_type
,
254 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
257 LLVMValueRef params
[] = {
258 ac_to_float(ctx
, src0
),
259 ac_to_float(ctx
, src1
),
260 ac_to_float(ctx
, src2
),
263 MAYBE_UNUSED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
264 ac_get_elem_bits(ctx
, result_type
));
265 assert(length
< sizeof(name
));
266 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 3, AC_FUNC_ATTR_READNONE
);
269 static LLVMValueRef
emit_bcsel(struct ac_llvm_context
*ctx
,
270 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
272 assert(LLVMGetTypeKind(LLVMTypeOf(src0
)) != LLVMVectorTypeKind
);
274 LLVMValueRef v
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
,
276 return LLVMBuildSelect(ctx
->builder
, v
,
277 ac_to_integer_or_pointer(ctx
, src1
),
278 ac_to_integer_or_pointer(ctx
, src2
), "");
281 static LLVMValueRef
emit_iabs(struct ac_llvm_context
*ctx
,
284 return ac_build_imax(ctx
, src0
, LLVMBuildNeg(ctx
->builder
, src0
, ""));
287 static LLVMValueRef
emit_uint_carry(struct ac_llvm_context
*ctx
,
289 LLVMValueRef src0
, LLVMValueRef src1
)
291 LLVMTypeRef ret_type
;
292 LLVMTypeRef types
[] = { ctx
->i32
, ctx
->i1
};
294 LLVMValueRef params
[] = { src0
, src1
};
295 ret_type
= LLVMStructTypeInContext(ctx
->context
, types
,
298 res
= ac_build_intrinsic(ctx
, intrin
, ret_type
,
299 params
, 2, AC_FUNC_ATTR_READNONE
);
301 res
= LLVMBuildExtractValue(ctx
->builder
, res
, 1, "");
302 res
= LLVMBuildZExt(ctx
->builder
, res
, ctx
->i32
, "");
306 static LLVMValueRef
emit_b2f(struct ac_llvm_context
*ctx
,
310 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
,
311 LLVMBuildBitCast(ctx
->builder
, LLVMConstReal(ctx
->f32
, 1.0), ctx
->i32
, ""),
313 result
= LLVMBuildBitCast(ctx
->builder
, result
, ctx
->f32
, "");
317 return LLVMBuildFPTrunc(ctx
->builder
, result
, ctx
->f16
, "");
321 return LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f64
, "");
323 unreachable("Unsupported bit size.");
327 static LLVMValueRef
emit_f2b(struct ac_llvm_context
*ctx
,
330 src0
= ac_to_float(ctx
, src0
);
331 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
332 return LLVMBuildSExt(ctx
->builder
,
333 LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
, src0
, zero
, ""),
337 static LLVMValueRef
emit_b2i(struct ac_llvm_context
*ctx
,
341 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
, ctx
->i32_1
, "");
345 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i8
, "");
347 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i16
, "");
351 return LLVMBuildZExt(ctx
->builder
, result
, ctx
->i64
, "");
353 unreachable("Unsupported bit size.");
357 static LLVMValueRef
emit_i2b(struct ac_llvm_context
*ctx
,
360 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
361 return LLVMBuildSExt(ctx
->builder
,
362 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
, zero
, ""),
366 static LLVMValueRef
emit_f2f16(struct ac_llvm_context
*ctx
,
370 LLVMValueRef cond
= NULL
;
372 src0
= ac_to_float(ctx
, src0
);
373 result
= LLVMBuildFPTrunc(ctx
->builder
, src0
, ctx
->f16
, "");
375 if (ctx
->chip_class
>= GFX8
) {
376 LLVMValueRef args
[2];
377 /* Check if the result is a denormal - and flush to 0 if so. */
379 args
[1] = LLVMConstInt(ctx
->i32
, N_SUBNORMAL
| P_SUBNORMAL
, false);
380 cond
= ac_build_intrinsic(ctx
, "llvm.amdgcn.class.f16", ctx
->i1
, args
, 2, AC_FUNC_ATTR_READNONE
);
383 /* need to convert back up to f32 */
384 result
= LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f32
, "");
386 if (ctx
->chip_class
>= GFX8
)
387 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
390 /* 0x38800000 is smallest half float value (2^-14) in 32-bit float,
391 * so compare the result and flush to 0 if it's smaller.
393 LLVMValueRef temp
, cond2
;
394 temp
= emit_intrin_1f_param(ctx
, "llvm.fabs", ctx
->f32
, result
);
395 cond
= LLVMBuildFCmp(ctx
->builder
, LLVMRealUGT
,
396 LLVMBuildBitCast(ctx
->builder
, LLVMConstInt(ctx
->i32
, 0x38800000, false), ctx
->f32
, ""),
398 cond2
= LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
,
399 temp
, ctx
->f32_0
, "");
400 cond
= LLVMBuildAnd(ctx
->builder
, cond
, cond2
, "");
401 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
406 static LLVMValueRef
emit_umul_high(struct ac_llvm_context
*ctx
,
407 LLVMValueRef src0
, LLVMValueRef src1
)
409 LLVMValueRef dst64
, result
;
410 src0
= LLVMBuildZExt(ctx
->builder
, src0
, ctx
->i64
, "");
411 src1
= LLVMBuildZExt(ctx
->builder
, src1
, ctx
->i64
, "");
413 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
414 dst64
= LLVMBuildLShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
415 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
419 static LLVMValueRef
emit_imul_high(struct ac_llvm_context
*ctx
,
420 LLVMValueRef src0
, LLVMValueRef src1
)
422 LLVMValueRef dst64
, result
;
423 src0
= LLVMBuildSExt(ctx
->builder
, src0
, ctx
->i64
, "");
424 src1
= LLVMBuildSExt(ctx
->builder
, src1
, ctx
->i64
, "");
426 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
427 dst64
= LLVMBuildAShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
428 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
432 static LLVMValueRef
emit_bfm(struct ac_llvm_context
*ctx
,
433 LLVMValueRef bits
, LLVMValueRef offset
)
435 /* mask = ((1 << bits) - 1) << offset */
436 return LLVMBuildShl(ctx
->builder
,
437 LLVMBuildSub(ctx
->builder
,
438 LLVMBuildShl(ctx
->builder
,
445 static LLVMValueRef
emit_bitfield_select(struct ac_llvm_context
*ctx
,
446 LLVMValueRef mask
, LLVMValueRef insert
,
450 * (mask & insert) | (~mask & base) = base ^ (mask & (insert ^ base))
451 * Use the right-hand side, which the LLVM backend can convert to V_BFI.
453 return LLVMBuildXor(ctx
->builder
, base
,
454 LLVMBuildAnd(ctx
->builder
, mask
,
455 LLVMBuildXor(ctx
->builder
, insert
, base
, ""), ""), "");
458 static LLVMValueRef
emit_pack_half_2x16(struct ac_llvm_context
*ctx
,
461 LLVMValueRef comp
[2];
463 src0
= ac_to_float(ctx
, src0
);
464 comp
[0] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_0
, "");
465 comp
[1] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_1
, "");
467 return LLVMBuildBitCast(ctx
->builder
, ac_build_cvt_pkrtz_f16(ctx
, comp
),
471 static LLVMValueRef
emit_unpack_half_2x16(struct ac_llvm_context
*ctx
,
474 LLVMValueRef const16
= LLVMConstInt(ctx
->i32
, 16, false);
475 LLVMValueRef temps
[2], val
;
478 for (i
= 0; i
< 2; i
++) {
479 val
= i
== 1 ? LLVMBuildLShr(ctx
->builder
, src0
, const16
, "") : src0
;
480 val
= LLVMBuildTrunc(ctx
->builder
, val
, ctx
->i16
, "");
481 val
= LLVMBuildBitCast(ctx
->builder
, val
, ctx
->f16
, "");
482 temps
[i
] = LLVMBuildFPExt(ctx
->builder
, val
, ctx
->f32
, "");
484 return ac_build_gather_values(ctx
, temps
, 2);
487 static LLVMValueRef
emit_ddxy(struct ac_nir_context
*ctx
,
495 if (op
== nir_op_fddx_fine
)
496 mask
= AC_TID_MASK_LEFT
;
497 else if (op
== nir_op_fddy_fine
)
498 mask
= AC_TID_MASK_TOP
;
500 mask
= AC_TID_MASK_TOP_LEFT
;
502 /* for DDX we want to next X pixel, DDY next Y pixel. */
503 if (op
== nir_op_fddx_fine
||
504 op
== nir_op_fddx_coarse
||
510 result
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, src0
);
514 static void visit_alu(struct ac_nir_context
*ctx
, const nir_alu_instr
*instr
)
516 LLVMValueRef src
[4], result
= NULL
;
517 unsigned num_components
= instr
->dest
.dest
.ssa
.num_components
;
518 unsigned src_components
;
519 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.dest
.ssa
);
521 assert(nir_op_infos
[instr
->op
].num_inputs
<= ARRAY_SIZE(src
));
528 case nir_op_pack_half_2x16
:
531 case nir_op_unpack_half_2x16
:
534 case nir_op_cube_face_coord
:
535 case nir_op_cube_face_index
:
539 src_components
= num_components
;
542 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
543 src
[i
] = get_alu_src(ctx
, instr
->src
[i
], src_components
);
550 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
551 result
= LLVMBuildFNeg(ctx
->ac
.builder
, src
[0], "");
554 result
= LLVMBuildNeg(ctx
->ac
.builder
, src
[0], "");
557 result
= LLVMBuildNot(ctx
->ac
.builder
, src
[0], "");
560 result
= LLVMBuildAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
563 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
564 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
565 result
= LLVMBuildFAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
568 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
569 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
570 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], src
[1], "");
573 result
= LLVMBuildSub(ctx
->ac
.builder
, src
[0], src
[1], "");
576 result
= LLVMBuildMul(ctx
->ac
.builder
, src
[0], src
[1], "");
579 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
582 result
= LLVMBuildURem(ctx
->ac
.builder
, src
[0], src
[1], "");
585 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
586 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
587 result
= ac_build_fdiv(&ctx
->ac
, src
[0], src
[1]);
588 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
589 ac_to_float_type(&ctx
->ac
, def_type
), result
);
590 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[1] , result
, "");
591 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], result
, "");
594 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
595 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
596 result
= LLVMBuildFRem(ctx
->ac
.builder
, src
[0], src
[1], "");
599 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
602 result
= LLVMBuildSDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
605 result
= LLVMBuildUDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
608 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
609 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
610 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[0], src
[1], "");
613 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
614 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(src
[0]), 1.0), src
[0]);
617 result
= LLVMBuildAnd(ctx
->ac
.builder
, src
[0], src
[1], "");
620 result
= LLVMBuildOr(ctx
->ac
.builder
, src
[0], src
[1], "");
623 result
= LLVMBuildXor(ctx
->ac
.builder
, src
[0], src
[1], "");
626 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
627 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
628 LLVMTypeOf(src
[0]), "");
629 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
630 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
631 LLVMTypeOf(src
[0]), "");
632 result
= LLVMBuildShl(ctx
->ac
.builder
, src
[0], src
[1], "");
635 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
636 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
637 LLVMTypeOf(src
[0]), "");
638 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
639 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
640 LLVMTypeOf(src
[0]), "");
641 result
= LLVMBuildAShr(ctx
->ac
.builder
, src
[0], src
[1], "");
644 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
645 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
646 LLVMTypeOf(src
[0]), "");
647 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
648 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
649 LLVMTypeOf(src
[0]), "");
650 result
= LLVMBuildLShr(ctx
->ac
.builder
, src
[0], src
[1], "");
653 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
656 result
= emit_int_cmp(&ctx
->ac
, LLVMIntNE
, src
[0], src
[1]);
659 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, src
[0], src
[1]);
662 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSGE
, src
[0], src
[1]);
665 result
= emit_int_cmp(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
668 result
= emit_int_cmp(&ctx
->ac
, LLVMIntUGE
, src
[0], src
[1]);
671 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOEQ
, src
[0], src
[1]);
674 result
= emit_float_cmp(&ctx
->ac
, LLVMRealUNE
, src
[0], src
[1]);
677 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOLT
, src
[0], src
[1]);
680 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOGE
, src
[0], src
[1]);
683 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.fabs",
684 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
687 result
= emit_iabs(&ctx
->ac
, src
[0]);
690 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
693 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
696 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
699 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
702 result
= ac_build_isign(&ctx
->ac
, src
[0],
703 instr
->dest
.dest
.ssa
.bit_size
);
706 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
707 result
= ac_build_fsign(&ctx
->ac
, src
[0],
708 instr
->dest
.dest
.ssa
.bit_size
);
711 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
712 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
715 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.trunc",
716 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
719 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.ceil",
720 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
722 case nir_op_fround_even
:
723 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.rint",
724 ac_to_float_type(&ctx
->ac
, def_type
),src
[0]);
727 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
728 result
= ac_build_fract(&ctx
->ac
, src
[0],
729 instr
->dest
.dest
.ssa
.bit_size
);
732 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sin",
733 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
736 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.cos",
737 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
740 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
741 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
744 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.exp2",
745 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
748 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.log2",
749 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
752 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
753 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
754 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(result
), 1.0), result
);
756 case nir_op_frexp_exp
:
757 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
758 result
= ac_build_frexp_exp(&ctx
->ac
, src
[0],
759 ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])));
760 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) == 16)
761 result
= LLVMBuildSExt(ctx
->ac
.builder
, result
,
764 case nir_op_frexp_sig
:
765 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
766 result
= ac_build_frexp_mant(&ctx
->ac
, src
[0],
767 instr
->dest
.dest
.ssa
.bit_size
);
770 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.pow",
771 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
774 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
775 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
776 if (ctx
->ac
.chip_class
< GFX9
&&
777 instr
->dest
.dest
.ssa
.bit_size
== 32) {
778 /* Only pre-GFX9 chips do not flush denorms. */
779 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.canonicalize",
780 ac_to_float_type(&ctx
->ac
, def_type
),
785 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
786 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
787 if (ctx
->ac
.chip_class
< GFX9
&&
788 instr
->dest
.dest
.ssa
.bit_size
== 32) {
789 /* Only pre-GFX9 chips do not flush denorms. */
790 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.canonicalize",
791 ac_to_float_type(&ctx
->ac
, def_type
),
796 result
= emit_intrin_3f_param(&ctx
->ac
, "llvm.fmuladd",
797 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1], src
[2]);
800 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
801 if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 32)
802 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f32", ctx
->ac
.f32
, src
, 2, AC_FUNC_ATTR_READNONE
);
803 else if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 16)
804 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f16", ctx
->ac
.f16
, src
, 2, AC_FUNC_ATTR_READNONE
);
806 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f64", ctx
->ac
.f64
, src
, 2, AC_FUNC_ATTR_READNONE
);
809 result
= emit_bfm(&ctx
->ac
, src
[0], src
[1]);
811 case nir_op_bitfield_select
:
812 result
= emit_bitfield_select(&ctx
->ac
, src
[0], src
[1], src
[2]);
815 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], false);
818 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], true);
820 case nir_op_bitfield_reverse
:
821 result
= ac_build_bitfield_reverse(&ctx
->ac
, src
[0]);
823 case nir_op_bit_count
:
824 result
= ac_build_bit_count(&ctx
->ac
, src
[0]);
829 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
830 src
[i
] = ac_to_integer(&ctx
->ac
, src
[i
]);
831 result
= ac_build_gather_values(&ctx
->ac
, src
, num_components
);
837 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
838 result
= LLVMBuildFPToSI(ctx
->ac
.builder
, src
[0], def_type
, "");
844 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
845 result
= LLVMBuildFPToUI(ctx
->ac
.builder
, src
[0], def_type
, "");
850 result
= LLVMBuildSIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
855 result
= LLVMBuildUIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
857 case nir_op_f2f16_rtz
:
858 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
859 if (LLVMTypeOf(src
[0]) == ctx
->ac
.f64
)
860 src
[0] = LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ctx
->ac
.f32
, "");
861 LLVMValueRef param
[2] = { src
[0], ctx
->ac
.f32_0
};
862 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, param
);
863 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
865 case nir_op_f2f16_rtne
:
869 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
870 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
871 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
873 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
879 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
880 result
= LLVMBuildZExt(ctx
->ac
.builder
, src
[0], def_type
, "");
882 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
888 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
889 result
= LLVMBuildSExt(ctx
->ac
.builder
, src
[0], def_type
, "");
891 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
894 result
= emit_bcsel(&ctx
->ac
, src
[0], src
[1], src
[2]);
896 case nir_op_find_lsb
:
897 result
= ac_find_lsb(&ctx
->ac
, ctx
->ac
.i32
, src
[0]);
899 case nir_op_ufind_msb
:
900 result
= ac_build_umsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
902 case nir_op_ifind_msb
:
903 result
= ac_build_imsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
905 case nir_op_uadd_carry
:
906 result
= emit_uint_carry(&ctx
->ac
, "llvm.uadd.with.overflow.i32", src
[0], src
[1]);
908 case nir_op_usub_borrow
:
909 result
= emit_uint_carry(&ctx
->ac
, "llvm.usub.with.overflow.i32", src
[0], src
[1]);
914 result
= emit_b2f(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
917 result
= emit_f2b(&ctx
->ac
, src
[0]);
923 result
= emit_b2i(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
926 result
= emit_i2b(&ctx
->ac
, src
[0]);
928 case nir_op_fquantize2f16
:
929 result
= emit_f2f16(&ctx
->ac
, src
[0]);
931 case nir_op_umul_high
:
932 result
= emit_umul_high(&ctx
->ac
, src
[0], src
[1]);
934 case nir_op_imul_high
:
935 result
= emit_imul_high(&ctx
->ac
, src
[0], src
[1]);
937 case nir_op_pack_half_2x16
:
938 result
= emit_pack_half_2x16(&ctx
->ac
, src
[0]);
940 case nir_op_unpack_half_2x16
:
941 result
= emit_unpack_half_2x16(&ctx
->ac
, src
[0]);
945 case nir_op_fddx_fine
:
946 case nir_op_fddy_fine
:
947 case nir_op_fddx_coarse
:
948 case nir_op_fddy_coarse
:
949 result
= emit_ddxy(ctx
, instr
->op
, src
[0]);
952 case nir_op_unpack_64_2x32_split_x
: {
953 assert(ac_get_llvm_num_components(src
[0]) == 1);
954 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
957 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
962 case nir_op_unpack_64_2x32_split_y
: {
963 assert(ac_get_llvm_num_components(src
[0]) == 1);
964 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
967 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
972 case nir_op_pack_64_2x32_split
: {
973 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
974 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i64
, "");
978 case nir_op_pack_32_2x16_split
: {
979 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
980 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
984 case nir_op_unpack_32_2x16_split_x
: {
985 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
988 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
993 case nir_op_unpack_32_2x16_split_y
: {
994 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
997 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1002 case nir_op_cube_face_coord
: {
1003 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1004 LLVMValueRef results
[2];
1006 for (unsigned chan
= 0; chan
< 3; chan
++)
1007 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1008 results
[0] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubesc",
1009 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1010 results
[1] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubetc",
1011 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1012 LLVMValueRef ma
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubema",
1013 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1014 results
[0] = ac_build_fdiv(&ctx
->ac
, results
[0], ma
);
1015 results
[1] = ac_build_fdiv(&ctx
->ac
, results
[1], ma
);
1016 LLVMValueRef offset
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
1017 results
[0] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[0], offset
, "");
1018 results
[1] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[1], offset
, "");
1019 result
= ac_build_gather_values(&ctx
->ac
, results
, 2);
1023 case nir_op_cube_face_index
: {
1024 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1026 for (unsigned chan
= 0; chan
< 3; chan
++)
1027 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1028 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubeid",
1029 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1034 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1035 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1036 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1037 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1040 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1041 result
= ac_build_umin(&ctx
->ac
, result
, src
[2]);
1044 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1045 result
= ac_build_imin(&ctx
->ac
, result
, src
[2]);
1048 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1049 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1050 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1051 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1054 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1055 result
= ac_build_umax(&ctx
->ac
, result
, src
[2]);
1058 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1059 result
= ac_build_imax(&ctx
->ac
, result
, src
[2]);
1061 case nir_op_fmed3
: {
1062 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1063 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
1064 src
[2] = ac_to_float(&ctx
->ac
, src
[2]);
1065 result
= ac_build_fmed3(&ctx
->ac
, src
[0], src
[1], src
[2],
1066 instr
->dest
.dest
.ssa
.bit_size
);
1069 case nir_op_imed3
: {
1070 LLVMValueRef tmp1
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1071 LLVMValueRef tmp2
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1072 tmp2
= ac_build_imin(&ctx
->ac
, tmp2
, src
[2]);
1073 result
= ac_build_imax(&ctx
->ac
, tmp1
, tmp2
);
1076 case nir_op_umed3
: {
1077 LLVMValueRef tmp1
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1078 LLVMValueRef tmp2
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1079 tmp2
= ac_build_umin(&ctx
->ac
, tmp2
, src
[2]);
1080 result
= ac_build_umax(&ctx
->ac
, tmp1
, tmp2
);
1085 fprintf(stderr
, "Unknown NIR alu instr: ");
1086 nir_print_instr(&instr
->instr
, stderr
);
1087 fprintf(stderr
, "\n");
1092 assert(instr
->dest
.dest
.is_ssa
);
1093 result
= ac_to_integer_or_pointer(&ctx
->ac
, result
);
1094 ctx
->ssa_defs
[instr
->dest
.dest
.ssa
.index
] = result
;
1098 static void visit_load_const(struct ac_nir_context
*ctx
,
1099 const nir_load_const_instr
*instr
)
1101 LLVMValueRef values
[4], value
= NULL
;
1102 LLVMTypeRef element_type
=
1103 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
1105 for (unsigned i
= 0; i
< instr
->def
.num_components
; ++i
) {
1106 switch (instr
->def
.bit_size
) {
1108 values
[i
] = LLVMConstInt(element_type
,
1109 instr
->value
[i
].u8
, false);
1112 values
[i
] = LLVMConstInt(element_type
,
1113 instr
->value
[i
].u16
, false);
1116 values
[i
] = LLVMConstInt(element_type
,
1117 instr
->value
[i
].u32
, false);
1120 values
[i
] = LLVMConstInt(element_type
,
1121 instr
->value
[i
].u64
, false);
1125 "unsupported nir load_const bit_size: %d\n",
1126 instr
->def
.bit_size
);
1130 if (instr
->def
.num_components
> 1) {
1131 value
= LLVMConstVector(values
, instr
->def
.num_components
);
1135 ctx
->ssa_defs
[instr
->def
.index
] = value
;
1139 get_buffer_size(struct ac_nir_context
*ctx
, LLVMValueRef descriptor
, bool in_elements
)
1142 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1143 LLVMConstInt(ctx
->ac
.i32
, 2, false), "");
1146 if (ctx
->ac
.chip_class
== GFX8
&& in_elements
) {
1147 /* On GFX8, the descriptor contains the size in bytes,
1148 * but TXQ must return the size in elements.
1149 * The stride is always non-zero for resources using TXQ.
1151 LLVMValueRef stride
=
1152 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1154 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
,
1155 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
1156 stride
= LLVMBuildAnd(ctx
->ac
.builder
, stride
,
1157 LLVMConstInt(ctx
->ac
.i32
, 0x3fff, false), "");
1159 size
= LLVMBuildUDiv(ctx
->ac
.builder
, size
, stride
, "");
1164 static LLVMValueRef
lower_gather4_integer(struct ac_llvm_context
*ctx
,
1166 struct ac_image_args
*args
,
1167 const nir_tex_instr
*instr
)
1169 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1170 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1171 LLVMValueRef half_texel
[2];
1172 LLVMValueRef compare_cube_wa
= NULL
;
1173 LLVMValueRef result
;
1177 struct ac_image_args txq_args
= { 0 };
1179 txq_args
.dim
= get_ac_sampler_dim(ctx
, instr
->sampler_dim
, instr
->is_array
);
1180 txq_args
.opcode
= ac_image_get_resinfo
;
1181 txq_args
.dmask
= 0xf;
1182 txq_args
.lod
= ctx
->i32_0
;
1183 txq_args
.resource
= args
->resource
;
1184 txq_args
.attributes
= AC_FUNC_ATTR_READNONE
;
1185 LLVMValueRef size
= ac_build_image_opcode(ctx
, &txq_args
);
1187 for (unsigned c
= 0; c
< 2; c
++) {
1188 half_texel
[c
] = LLVMBuildExtractElement(ctx
->builder
, size
,
1189 LLVMConstInt(ctx
->i32
, c
, false), "");
1190 half_texel
[c
] = LLVMBuildUIToFP(ctx
->builder
, half_texel
[c
], ctx
->f32
, "");
1191 half_texel
[c
] = ac_build_fdiv(ctx
, ctx
->f32_1
, half_texel
[c
]);
1192 half_texel
[c
] = LLVMBuildFMul(ctx
->builder
, half_texel
[c
],
1193 LLVMConstReal(ctx
->f32
, -0.5), "");
1197 LLVMValueRef orig_coords
[2] = { args
->coords
[0], args
->coords
[1] };
1199 for (unsigned c
= 0; c
< 2; c
++) {
1201 tmp
= LLVMBuildBitCast(ctx
->builder
, args
->coords
[c
], ctx
->f32
, "");
1202 args
->coords
[c
] = LLVMBuildFAdd(ctx
->builder
, tmp
, half_texel
[c
], "");
1206 * Apparantly cube has issue with integer types that the workaround doesn't solve,
1207 * so this tests if the format is 8_8_8_8 and an integer type do an alternate
1208 * workaround by sampling using a scaled type and converting.
1209 * This is taken from amdgpu-pro shaders.
1211 /* NOTE this produces some ugly code compared to amdgpu-pro,
1212 * LLVM ends up dumping SGPRs into VGPRs to deal with the compare/select,
1213 * and then reads them back. -pro generates two selects,
1214 * one s_cmp for the descriptor rewriting
1215 * one v_cmp for the coordinate and result changes.
1217 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1218 LLVMValueRef tmp
, tmp2
;
1220 /* workaround 8/8/8/8 uint/sint cube gather bug */
1221 /* first detect it then change to a scaled read and f2i */
1222 tmp
= LLVMBuildExtractElement(ctx
->builder
, args
->resource
, ctx
->i32_1
, "");
1225 /* extract the DATA_FORMAT */
1226 tmp
= ac_build_bfe(ctx
, tmp
, LLVMConstInt(ctx
->i32
, 20, false),
1227 LLVMConstInt(ctx
->i32
, 6, false), false);
1229 /* is the DATA_FORMAT == 8_8_8_8 */
1230 compare_cube_wa
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, tmp
, LLVMConstInt(ctx
->i32
, V_008F14_IMG_DATA_FORMAT_8_8_8_8
, false), "");
1232 if (stype
== GLSL_TYPE_UINT
)
1233 /* Create a NUM FORMAT - 0x2 or 0x4 - USCALED or UINT */
1234 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, LLVMConstInt(ctx
->i32
, 0x8000000, false),
1235 LLVMConstInt(ctx
->i32
, 0x10000000, false), "");
1237 /* Create a NUM FORMAT - 0x3 or 0x5 - SSCALED or SINT */
1238 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, LLVMConstInt(ctx
->i32
, 0xc000000, false),
1239 LLVMConstInt(ctx
->i32
, 0x14000000, false), "");
1241 /* replace the NUM FORMAT in the descriptor */
1242 tmp2
= LLVMBuildAnd(ctx
->builder
, tmp2
, LLVMConstInt(ctx
->i32
, C_008F14_NUM_FORMAT
, false), "");
1243 tmp2
= LLVMBuildOr(ctx
->builder
, tmp2
, tmp
, "");
1245 args
->resource
= LLVMBuildInsertElement(ctx
->builder
, args
->resource
, tmp2
, ctx
->i32_1
, "");
1247 /* don't modify the coordinates for this case */
1248 for (unsigned c
= 0; c
< 2; ++c
)
1249 args
->coords
[c
] = LLVMBuildSelect(
1250 ctx
->builder
, compare_cube_wa
,
1251 orig_coords
[c
], args
->coords
[c
], "");
1254 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1255 result
= ac_build_image_opcode(ctx
, args
);
1257 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1258 LLVMValueRef tmp
, tmp2
;
1260 /* if the cube workaround is in place, f2i the result. */
1261 for (unsigned c
= 0; c
< 4; c
++) {
1262 tmp
= LLVMBuildExtractElement(ctx
->builder
, result
, LLVMConstInt(ctx
->i32
, c
, false), "");
1263 if (stype
== GLSL_TYPE_UINT
)
1264 tmp2
= LLVMBuildFPToUI(ctx
->builder
, tmp
, ctx
->i32
, "");
1266 tmp2
= LLVMBuildFPToSI(ctx
->builder
, tmp
, ctx
->i32
, "");
1267 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->i32
, "");
1268 tmp2
= LLVMBuildBitCast(ctx
->builder
, tmp2
, ctx
->i32
, "");
1269 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, tmp2
, tmp
, "");
1270 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f32
, "");
1271 result
= LLVMBuildInsertElement(ctx
->builder
, result
, tmp
, LLVMConstInt(ctx
->i32
, c
, false), "");
1277 static nir_deref_instr
*get_tex_texture_deref(const nir_tex_instr
*instr
)
1279 nir_deref_instr
*texture_deref_instr
= NULL
;
1281 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
1282 switch (instr
->src
[i
].src_type
) {
1283 case nir_tex_src_texture_deref
:
1284 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
1290 return texture_deref_instr
;
1293 static LLVMValueRef
build_tex_intrinsic(struct ac_nir_context
*ctx
,
1294 const nir_tex_instr
*instr
,
1295 struct ac_image_args
*args
)
1297 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
1298 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
1300 if (ctx
->abi
->gfx9_stride_size_workaround
) {
1301 return ac_build_buffer_load_format_gfx9_safe(&ctx
->ac
,
1305 util_last_bit(mask
),
1308 return ac_build_buffer_load_format(&ctx
->ac
,
1312 util_last_bit(mask
),
1317 args
->opcode
= ac_image_sample
;
1319 switch (instr
->op
) {
1321 case nir_texop_txf_ms
:
1322 case nir_texop_samples_identical
:
1323 args
->opcode
= args
->level_zero
||
1324 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
?
1325 ac_image_load
: ac_image_load_mip
;
1326 args
->level_zero
= false;
1329 case nir_texop_query_levels
:
1330 args
->opcode
= ac_image_get_resinfo
;
1332 args
->lod
= ctx
->ac
.i32_0
;
1333 args
->level_zero
= false;
1336 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1338 args
->level_zero
= true;
1342 args
->opcode
= ac_image_gather4
;
1343 args
->level_zero
= true;
1346 args
->opcode
= ac_image_get_lod
;
1352 if (instr
->op
== nir_texop_tg4
&& ctx
->ac
.chip_class
<= GFX8
) {
1353 nir_deref_instr
*texture_deref_instr
= get_tex_texture_deref(instr
);
1354 nir_variable
*var
= nir_deref_instr_get_variable(texture_deref_instr
);
1355 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1356 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1357 if (stype
== GLSL_TYPE_UINT
|| stype
== GLSL_TYPE_INT
) {
1358 return lower_gather4_integer(&ctx
->ac
, var
, args
, instr
);
1362 /* Fixup for GFX9 which allocates 1D textures as 2D. */
1363 if (instr
->op
== nir_texop_lod
&& ctx
->ac
.chip_class
>= GFX9
) {
1364 if ((args
->dim
== ac_image_2darray
||
1365 args
->dim
== ac_image_2d
) && !args
->coords
[1]) {
1366 args
->coords
[1] = ctx
->ac
.i32_0
;
1370 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1371 bool cs_derivs
= ctx
->stage
== MESA_SHADER_COMPUTE
&&
1372 ctx
->info
->cs
.derivative_group
!= DERIVATIVE_GROUP_NONE
;
1373 if (ctx
->stage
== MESA_SHADER_FRAGMENT
|| cs_derivs
) {
1374 /* Prevent texture instructions with implicit derivatives from being
1375 * sinked into branches. */
1376 switch (instr
->op
) {
1380 args
->attributes
|= AC_FUNC_ATTR_CONVERGENT
;
1387 return ac_build_image_opcode(&ctx
->ac
, args
);
1390 static LLVMValueRef
visit_vulkan_resource_reindex(struct ac_nir_context
*ctx
,
1391 nir_intrinsic_instr
*instr
)
1393 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
1394 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
1396 LLVMValueRef result
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
1397 LLVMSetMetadata(result
, ctx
->ac
.uniform_md_kind
, ctx
->ac
.empty_md
);
1401 static LLVMValueRef
visit_load_push_constant(struct ac_nir_context
*ctx
,
1402 nir_intrinsic_instr
*instr
)
1404 LLVMValueRef ptr
, addr
;
1405 LLVMValueRef src0
= get_src(ctx
, instr
->src
[0]);
1406 unsigned index
= nir_intrinsic_base(instr
);
1408 addr
= LLVMConstInt(ctx
->ac
.i32
, index
, 0);
1409 addr
= LLVMBuildAdd(ctx
->ac
.builder
, addr
, src0
, "");
1411 /* Load constant values from user SGPRS when possible, otherwise
1412 * fallback to the default path that loads directly from memory.
1414 if (LLVMIsConstant(src0
) &&
1415 instr
->dest
.ssa
.bit_size
== 32) {
1416 unsigned count
= instr
->dest
.ssa
.num_components
;
1417 unsigned offset
= index
;
1419 offset
+= LLVMConstIntGetZExtValue(src0
);
1422 offset
-= ctx
->abi
->base_inline_push_consts
;
1424 if (offset
+ count
<= ctx
->abi
->num_inline_push_consts
) {
1425 return ac_build_gather_values(&ctx
->ac
,
1426 ctx
->abi
->inline_push_consts
+ offset
,
1431 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ctx
->abi
->push_constants
, &addr
, 1, "");
1433 if (instr
->dest
.ssa
.bit_size
== 8) {
1434 unsigned load_dwords
= instr
->dest
.ssa
.num_components
> 1 ? 2 : 1;
1435 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), 4 * load_dwords
);
1436 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1437 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1439 LLVMValueRef params
[3];
1440 if (load_dwords
> 1) {
1441 LLVMValueRef res_vec
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(ctx
->ac
.i32
, 2), "");
1442 params
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
1443 params
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 0, false), "");
1445 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, ctx
->ac
.i32
, "");
1446 params
[0] = ctx
->ac
.i32_0
;
1450 res
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.alignbyte", ctx
->ac
.i32
, params
, 3, 0);
1452 res
= LLVMBuildTrunc(ctx
->ac
.builder
, res
, LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.num_components
* 8), "");
1453 if (instr
->dest
.ssa
.num_components
> 1)
1454 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), instr
->dest
.ssa
.num_components
), "");
1456 } else if (instr
->dest
.ssa
.bit_size
== 16) {
1457 unsigned load_dwords
= instr
->dest
.ssa
.num_components
/ 2 + 1;
1458 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt16TypeInContext(ctx
->ac
.context
), 2 * load_dwords
);
1459 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1460 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1461 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, vec_type
, "");
1462 LLVMValueRef cond
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, ctx
->ac
.i32_1
, "");
1463 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->ac
.i1
, "");
1464 LLVMValueRef mask
[] = { LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
1465 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
1466 LLVMConstInt(ctx
->ac
.i32
, 4, false)};
1467 LLVMValueRef swizzle_aligned
= LLVMConstVector(&mask
[0], instr
->dest
.ssa
.num_components
);
1468 LLVMValueRef swizzle_unaligned
= LLVMConstVector(&mask
[1], instr
->dest
.ssa
.num_components
);
1469 LLVMValueRef shuffle_aligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_aligned
, "");
1470 LLVMValueRef shuffle_unaligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_unaligned
, "");
1471 res
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, shuffle_unaligned
, shuffle_aligned
, "");
1472 return LLVMBuildBitCast(ctx
->ac
.builder
, res
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1475 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, get_def_type(ctx
, &instr
->dest
.ssa
));
1477 return LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1480 static LLVMValueRef
visit_get_buffer_size(struct ac_nir_context
*ctx
,
1481 const nir_intrinsic_instr
*instr
)
1483 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
1485 return get_buffer_size(ctx
, ctx
->abi
->load_ssbo(ctx
->abi
, index
, false), false);
1488 static uint32_t widen_mask(uint32_t mask
, unsigned multiplier
)
1490 uint32_t new_mask
= 0;
1491 for(unsigned i
= 0; i
< 32 && (1u << i
) <= mask
; ++i
)
1492 if (mask
& (1u << i
))
1493 new_mask
|= ((1u << multiplier
) - 1u) << (i
* multiplier
);
1497 static LLVMValueRef
extract_vector_range(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
1498 unsigned start
, unsigned count
)
1500 LLVMValueRef mask
[] = {
1501 ctx
->i32_0
, ctx
->i32_1
,
1502 LLVMConstInt(ctx
->i32
, 2, false), LLVMConstInt(ctx
->i32
, 3, false) };
1504 unsigned src_elements
= ac_get_llvm_num_components(src
);
1506 if (count
== src_elements
) {
1509 } else if (count
== 1) {
1510 assert(start
< src_elements
);
1511 return LLVMBuildExtractElement(ctx
->builder
, src
, mask
[start
], "");
1513 assert(start
+ count
<= src_elements
);
1515 LLVMValueRef swizzle
= LLVMConstVector(&mask
[start
], count
);
1516 return LLVMBuildShuffleVector(ctx
->builder
, src
, src
, swizzle
, "");
1520 static unsigned get_cache_policy(struct ac_nir_context
*ctx
,
1521 enum gl_access_qualifier access
,
1522 bool may_store_unaligned
,
1523 bool writeonly_memory
)
1525 unsigned cache_policy
= 0;
1527 /* GFX6 has a TC L1 bug causing corruption of 8bit/16bit stores. All
1528 * store opcodes not aligned to a dword are affected. The only way to
1529 * get unaligned stores is through shader images.
1531 if (((may_store_unaligned
&& ctx
->ac
.chip_class
== GFX6
) ||
1532 /* If this is write-only, don't keep data in L1 to prevent
1533 * evicting L1 cache lines that may be needed by other
1537 access
& (ACCESS_COHERENT
| ACCESS_VOLATILE
))) {
1538 cache_policy
|= ac_glc
;
1541 return cache_policy
;
1544 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1545 nir_intrinsic_instr
*instr
)
1547 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1548 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1549 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1550 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1551 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
1552 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, writeonly_memory
);
1554 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1555 get_src(ctx
, instr
->src
[1]), true);
1556 LLVMValueRef base_data
= src_data
;
1557 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1558 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1562 LLVMValueRef data
, offset
;
1563 LLVMTypeRef data_type
;
1565 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1567 /* Due to an LLVM limitation with LLVM < 9, split 3-element
1568 * writes into a 2-element and a 1-element write. */
1570 (elem_size_bytes
!= 4 || !ac_has_vec3_support(ctx
->ac
.chip_class
, false))) {
1571 writemask
|= 1 << (start
+ 2);
1574 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1576 /* we can only store 4 DWords at the same time.
1577 * can only happen for 64 Bit vectors. */
1578 if (num_bytes
> 16) {
1579 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1584 /* check alignment of 16 Bit stores */
1585 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1586 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1590 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1592 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1593 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1595 if (num_bytes
== 1) {
1596 ac_build_tbuffer_store_byte(&ctx
->ac
, rsrc
, data
,
1597 offset
, ctx
->ac
.i32_0
,
1599 } else if (num_bytes
== 2) {
1600 ac_build_tbuffer_store_short(&ctx
->ac
, rsrc
, data
,
1601 offset
, ctx
->ac
.i32_0
,
1604 int num_channels
= num_bytes
/ 4;
1606 switch (num_bytes
) {
1607 case 16: /* v4f32 */
1608 data_type
= ctx
->ac
.v4f32
;
1610 case 12: /* v3f32 */
1611 data_type
= ctx
->ac
.v3f32
;
1614 data_type
= ctx
->ac
.v2f32
;
1617 data_type
= ctx
->ac
.f32
;
1620 unreachable("Malformed vector store.");
1622 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1624 ac_build_buffer_store_dword(&ctx
->ac
, rsrc
, data
,
1625 num_channels
, offset
,
1627 cache_policy
, false);
1632 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1633 const nir_intrinsic_instr
*instr
)
1635 LLVMTypeRef return_type
= LLVMTypeOf(get_src(ctx
, instr
->src
[2]));
1637 char name
[64], type
[8];
1638 LLVMValueRef params
[6];
1641 switch (instr
->intrinsic
) {
1642 case nir_intrinsic_ssbo_atomic_add
:
1645 case nir_intrinsic_ssbo_atomic_imin
:
1648 case nir_intrinsic_ssbo_atomic_umin
:
1651 case nir_intrinsic_ssbo_atomic_imax
:
1654 case nir_intrinsic_ssbo_atomic_umax
:
1657 case nir_intrinsic_ssbo_atomic_and
:
1660 case nir_intrinsic_ssbo_atomic_or
:
1663 case nir_intrinsic_ssbo_atomic_xor
:
1666 case nir_intrinsic_ssbo_atomic_exchange
:
1669 case nir_intrinsic_ssbo_atomic_comp_swap
:
1676 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1677 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1679 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1680 params
[arg_count
++] = ctx
->abi
->load_ssbo(ctx
->abi
,
1681 get_src(ctx
, instr
->src
[0]),
1684 if (HAVE_LLVM
>= 0x900) {
1685 /* XXX: The new raw/struct atomic intrinsics are buggy with
1686 * LLVM 8, see r358579.
1688 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1689 params
[arg_count
++] = ctx
->ac
.i32_0
; /* soffset */
1690 params
[arg_count
++] = ctx
->ac
.i32_0
; /* slc */
1692 ac_build_type_name_for_intr(return_type
, type
, sizeof(type
));
1693 snprintf(name
, sizeof(name
),
1694 "llvm.amdgcn.raw.buffer.atomic.%s.%s", op
, type
);
1696 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1697 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1698 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1700 assert(return_type
== ctx
->ac
.i32
);
1701 snprintf(name
, sizeof(name
),
1702 "llvm.amdgcn.buffer.atomic.%s", op
);
1705 return ac_build_intrinsic(&ctx
->ac
, name
, return_type
, params
,
1709 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
1710 const nir_intrinsic_instr
*instr
)
1712 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1713 int num_components
= instr
->num_components
;
1714 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1715 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, false);
1717 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1718 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1719 get_src(ctx
, instr
->src
[0]), false);
1720 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
1722 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1723 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
1725 LLVMValueRef results
[4];
1726 for (int i
= 0; i
< num_components
;) {
1727 int num_elems
= num_components
- i
;
1728 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
1730 if (num_elems
* elem_size_bytes
> 16)
1731 num_elems
= 16 / elem_size_bytes
;
1732 int load_bytes
= num_elems
* elem_size_bytes
;
1734 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
1738 if (load_bytes
== 1) {
1739 ret
= ac_build_tbuffer_load_byte(&ctx
->ac
,
1745 } else if (load_bytes
== 2) {
1746 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
1753 int num_channels
= util_next_power_of_two(load_bytes
) / 4;
1754 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
1756 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_channels
,
1757 vindex
, offset
, immoffset
, 0,
1758 cache_policy
, can_speculate
, false);
1761 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
1762 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
1763 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
1765 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
1766 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
1768 for (unsigned j
= 0; j
< num_elems
; j
++) {
1769 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
1774 return ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1777 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
1778 const nir_intrinsic_instr
*instr
)
1781 LLVMValueRef rsrc
= get_src(ctx
, instr
->src
[0]);
1782 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1783 int num_components
= instr
->num_components
;
1785 if (ctx
->abi
->load_ubo
)
1786 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
1788 if (instr
->dest
.ssa
.bit_size
== 64)
1789 num_components
*= 2;
1791 if (instr
->dest
.ssa
.bit_size
== 16 || instr
->dest
.ssa
.bit_size
== 8) {
1792 unsigned load_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1793 LLVMValueRef results
[num_components
];
1794 for (unsigned i
= 0; i
< num_components
; ++i
) {
1795 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
,
1798 if (load_bytes
== 1) {
1799 results
[i
] = ac_build_tbuffer_load_byte(&ctx
->ac
,
1806 assert(load_bytes
== 2);
1807 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
1815 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1817 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
1818 NULL
, 0, 0, true, true);
1820 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
1823 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
1824 get_def_type(ctx
, &instr
->dest
.ssa
), "");
1828 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
1829 bool vs_in
, unsigned *vertex_index_out
,
1830 LLVMValueRef
*vertex_index_ref
,
1831 unsigned *const_out
, LLVMValueRef
*indir_out
)
1833 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
1834 nir_deref_path path
;
1835 unsigned idx_lvl
= 1;
1837 nir_deref_path_init(&path
, instr
, NULL
);
1839 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
1840 if (vertex_index_ref
) {
1841 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
1842 if (vertex_index_out
)
1843 *vertex_index_out
= 0;
1845 *vertex_index_out
= nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
1850 uint32_t const_offset
= 0;
1851 LLVMValueRef offset
= NULL
;
1853 if (var
->data
.compact
) {
1854 assert(instr
->deref_type
== nir_deref_type_array
);
1855 const_offset
= nir_src_as_uint(instr
->arr
.index
);
1859 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
1860 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
1861 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
1862 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
1864 for (unsigned i
= 0; i
< index
; i
++) {
1865 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
1866 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
1868 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
1869 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
1870 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
1871 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
1873 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
1877 unreachable("Uhandled deref type in get_deref_instr_offset");
1881 nir_deref_path_finish(&path
);
1883 if (const_offset
&& offset
)
1884 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
1885 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
1888 *const_out
= const_offset
;
1889 *indir_out
= offset
;
1892 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
1893 nir_intrinsic_instr
*instr
,
1896 LLVMValueRef result
;
1897 LLVMValueRef vertex_index
= NULL
;
1898 LLVMValueRef indir_index
= NULL
;
1899 unsigned const_index
= 0;
1901 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
1903 unsigned location
= var
->data
.location
;
1904 unsigned driver_location
= var
->data
.driver_location
;
1905 const bool is_patch
= var
->data
.patch
;
1906 const bool is_compact
= var
->data
.compact
;
1908 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
1909 false, NULL
, is_patch
? NULL
: &vertex_index
,
1910 &const_index
, &indir_index
);
1912 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1914 LLVMTypeRef src_component_type
;
1915 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
1916 src_component_type
= LLVMGetElementType(dest_type
);
1918 src_component_type
= dest_type
;
1920 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
1921 vertex_index
, indir_index
,
1922 const_index
, location
, driver_location
,
1923 var
->data
.location_frac
,
1924 instr
->num_components
,
1925 is_patch
, is_compact
, load_inputs
);
1926 if (instr
->dest
.ssa
.bit_size
== 16) {
1927 result
= ac_to_integer(&ctx
->ac
, result
);
1928 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
1930 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
1934 type_scalar_size_bytes(const struct glsl_type
*type
)
1936 assert(glsl_type_is_vector_or_scalar(type
) ||
1937 glsl_type_is_matrix(type
));
1938 return glsl_type_is_boolean(type
) ? 4 : glsl_get_bit_size(type
) / 8;
1941 static LLVMValueRef
visit_load_var(struct ac_nir_context
*ctx
,
1942 nir_intrinsic_instr
*instr
)
1944 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
1945 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
1947 LLVMValueRef values
[8];
1949 int ve
= instr
->dest
.ssa
.num_components
;
1951 LLVMValueRef indir_index
;
1953 unsigned const_index
;
1954 unsigned stride
= 4;
1955 int mode
= deref
->mode
;
1958 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
1959 var
->data
.mode
== nir_var_shader_in
;
1960 idx
= var
->data
.driver_location
;
1961 comp
= var
->data
.location_frac
;
1962 mode
= var
->data
.mode
;
1964 get_deref_offset(ctx
, deref
, vs_in
, NULL
, NULL
,
1965 &const_index
, &indir_index
);
1967 if (var
->data
.compact
) {
1969 const_index
+= comp
;
1974 if (instr
->dest
.ssa
.bit_size
== 64 &&
1975 (deref
->mode
== nir_var_shader_in
||
1976 deref
->mode
== nir_var_shader_out
||
1977 deref
->mode
== nir_var_function_temp
))
1981 case nir_var_shader_in
:
1982 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
1983 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
1984 return load_tess_varyings(ctx
, instr
, true);
1987 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
1988 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
1989 LLVMValueRef indir_index
;
1990 unsigned const_index
, vertex_index
;
1991 get_deref_offset(ctx
, deref
, false, &vertex_index
, NULL
,
1992 &const_index
, &indir_index
);
1994 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
1995 var
->data
.driver_location
,
1996 var
->data
.location_frac
,
1997 instr
->num_components
, vertex_index
, const_index
, type
);
2000 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2002 unsigned count
= glsl_count_attribute_slots(
2004 ctx
->stage
== MESA_SHADER_VERTEX
);
2006 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2007 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
2008 stride
, false, true);
2010 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2014 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
2017 case nir_var_function_temp
:
2018 for (unsigned chan
= 0; chan
< ve
; chan
++) {
2020 unsigned count
= glsl_count_attribute_slots(
2023 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2024 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2025 stride
, true, true);
2027 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2031 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
2035 case nir_var_mem_shared
: {
2036 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2037 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2038 return LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2039 get_def_type(ctx
, &instr
->dest
.ssa
),
2042 case nir_var_shader_out
:
2043 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2044 return load_tess_varyings(ctx
, instr
, false);
2047 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2049 unsigned count
= glsl_count_attribute_slots(
2052 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2053 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2054 stride
, true, true);
2056 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2060 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
2061 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
2066 case nir_var_mem_global
: {
2067 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2068 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2069 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2070 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2072 LLVMTypeRef result_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2073 if (stride
!= natural_stride
) {
2074 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(result_type
),
2075 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2076 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2078 for (unsigned i
= 0; i
< instr
->dest
.ssa
.num_components
; ++i
) {
2079 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, i
* stride
/ natural_stride
, 0);
2080 values
[i
] = LLVMBuildLoad(ctx
->ac
.builder
,
2081 ac_build_gep_ptr(&ctx
->ac
, address
, offset
), "");
2083 return ac_build_gather_values(&ctx
->ac
, values
, instr
->dest
.ssa
.num_components
);
2085 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2086 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2087 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2088 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2093 unreachable("unhandle variable mode");
2095 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
2096 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2100 visit_store_var(struct ac_nir_context
*ctx
,
2101 nir_intrinsic_instr
*instr
)
2103 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2104 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2106 LLVMValueRef temp_ptr
, value
;
2109 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
2110 int writemask
= instr
->const_index
[0];
2111 LLVMValueRef indir_index
;
2112 unsigned const_index
;
2115 get_deref_offset(ctx
, deref
, false,
2116 NULL
, NULL
, &const_index
, &indir_index
);
2117 idx
= var
->data
.driver_location
;
2118 comp
= var
->data
.location_frac
;
2120 if (var
->data
.compact
) {
2121 const_index
+= comp
;
2126 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64 &&
2127 (deref
->mode
== nir_var_shader_out
||
2128 deref
->mode
== nir_var_function_temp
)) {
2130 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2131 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2134 writemask
= widen_mask(writemask
, 2);
2137 writemask
= writemask
<< comp
;
2139 switch (deref
->mode
) {
2140 case nir_var_shader_out
:
2142 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2143 LLVMValueRef vertex_index
= NULL
;
2144 LLVMValueRef indir_index
= NULL
;
2145 unsigned const_index
= 0;
2146 const bool is_patch
= var
->data
.patch
;
2148 get_deref_offset(ctx
, deref
, false, NULL
,
2149 is_patch
? NULL
: &vertex_index
,
2150 &const_index
, &indir_index
);
2152 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2153 vertex_index
, indir_index
,
2154 const_index
, src
, writemask
);
2158 for (unsigned chan
= 0; chan
< 8; chan
++) {
2160 if (!(writemask
& (1 << chan
)))
2163 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2165 if (var
->data
.compact
)
2168 unsigned count
= glsl_count_attribute_slots(
2171 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2172 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2173 stride
, true, true);
2175 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2176 value
, indir_index
, "");
2177 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2178 count
, stride
, tmp_vec
);
2181 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2183 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2187 case nir_var_function_temp
:
2188 for (unsigned chan
= 0; chan
< 8; chan
++) {
2189 if (!(writemask
& (1 << chan
)))
2192 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2194 unsigned count
= glsl_count_attribute_slots(
2197 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2198 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2201 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2202 value
, indir_index
, "");
2203 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2206 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2208 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2213 case nir_var_mem_global
:
2214 case nir_var_mem_shared
: {
2215 int writemask
= instr
->const_index
[0];
2216 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2217 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2219 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2220 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2221 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2223 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2224 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2225 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2227 if (writemask
== (1u << ac_get_llvm_num_components(val
)) - 1 &&
2228 stride
== natural_stride
) {
2229 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2230 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2231 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2233 val
= LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2234 LLVMGetElementType(LLVMTypeOf(address
)), "");
2235 LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2237 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(LLVMTypeOf(val
)),
2238 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2239 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2240 for (unsigned chan
= 0; chan
< 4; chan
++) {
2241 if (!(writemask
& (1 << chan
)))
2244 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, chan
* stride
/ natural_stride
, 0);
2246 LLVMValueRef ptr
= ac_build_gep_ptr(&ctx
->ac
, address
, offset
);
2247 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2249 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2250 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2251 LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2262 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2265 case GLSL_SAMPLER_DIM_BUF
:
2267 case GLSL_SAMPLER_DIM_1D
:
2268 return array
? 2 : 1;
2269 case GLSL_SAMPLER_DIM_2D
:
2270 return array
? 3 : 2;
2271 case GLSL_SAMPLER_DIM_MS
:
2272 return array
? 4 : 3;
2273 case GLSL_SAMPLER_DIM_3D
:
2274 case GLSL_SAMPLER_DIM_CUBE
:
2276 case GLSL_SAMPLER_DIM_RECT
:
2277 case GLSL_SAMPLER_DIM_SUBPASS
:
2279 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2287 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2288 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2289 LLVMValueRef coord_z
,
2290 LLVMValueRef sample_index
,
2291 LLVMValueRef fmask_desc_ptr
)
2293 unsigned sample_chan
= coord_z
? 3 : 2;
2294 LLVMValueRef addr
[4] = {coord_x
, coord_y
, coord_z
};
2295 addr
[sample_chan
] = sample_index
;
2297 ac_apply_fmask_to_sample(ctx
, fmask_desc_ptr
, addr
, coord_z
!= NULL
);
2298 return addr
[sample_chan
];
2301 static nir_deref_instr
*get_image_deref(const nir_intrinsic_instr
*instr
)
2303 assert(instr
->src
[0].is_ssa
);
2304 return nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2307 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2308 const nir_intrinsic_instr
*instr
,
2309 enum ac_descriptor_type desc_type
,
2312 nir_deref_instr
*deref_instr
=
2313 instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
?
2314 nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
) : NULL
;
2316 return get_sampler_desc(ctx
, deref_instr
, desc_type
, &instr
->instr
, true, write
);
2319 static void get_image_coords(struct ac_nir_context
*ctx
,
2320 const nir_intrinsic_instr
*instr
,
2321 struct ac_image_args
*args
,
2322 enum glsl_sampler_dim dim
,
2325 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2326 LLVMValueRef masks
[] = {
2327 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2328 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2330 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2333 MAYBE_UNUSED
bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2334 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2335 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2336 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2337 bool gfx9_1d
= ctx
->ac
.chip_class
>= GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2338 assert(!add_frag_pos
&& "Input attachments should be lowered by this point.");
2339 count
= image_type_to_components_count(dim
, is_array
);
2341 if (is_ms
&& (instr
->intrinsic
== nir_intrinsic_image_deref_load
||
2342 instr
->intrinsic
== nir_intrinsic_bindless_image_load
)) {
2343 LLVMValueRef fmask_load_address
[3];
2345 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2346 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2348 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2350 fmask_load_address
[2] = NULL
;
2352 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2353 fmask_load_address
[0],
2354 fmask_load_address
[1],
2355 fmask_load_address
[2],
2357 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2358 AC_DESC_FMASK
, &instr
->instr
, false, false));
2360 if (count
== 1 && !gfx9_1d
) {
2361 if (instr
->src
[1].ssa
->num_components
)
2362 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2364 args
->coords
[0] = src0
;
2369 for (chan
= 0; chan
< count
; ++chan
) {
2370 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2375 args
->coords
[2] = args
->coords
[1];
2376 args
->coords
[1] = ctx
->ac
.i32_0
;
2378 args
->coords
[1] = ctx
->ac
.i32_0
;
2383 args
->coords
[count
] = sample_index
;
2389 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2390 const nir_intrinsic_instr
*instr
,
2391 bool write
, bool atomic
)
2393 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, write
);
2394 if (ctx
->abi
->gfx9_stride_size_workaround
||
2395 (ctx
->abi
->gfx9_stride_size_workaround_for_atomic
&& atomic
)) {
2396 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2397 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2398 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2400 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2401 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2402 elem_count
, stride
, "");
2404 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2405 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2410 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2411 const nir_intrinsic_instr
*instr
,
2416 enum glsl_sampler_dim dim
;
2417 enum gl_access_qualifier access
;
2420 dim
= nir_intrinsic_image_dim(instr
);
2421 access
= nir_intrinsic_access(instr
);
2422 is_array
= nir_intrinsic_image_array(instr
);
2424 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2425 const struct glsl_type
*type
= image_deref
->type
;
2426 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2427 dim
= glsl_get_sampler_dim(type
);
2428 access
= var
->data
.image
.access
;
2429 is_array
= glsl_sampler_type_is_array(type
);
2432 struct ac_image_args args
= {};
2434 args
.cache_policy
= get_cache_policy(ctx
, access
, false, false);
2436 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2437 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2438 unsigned num_channels
= util_last_bit(mask
);
2439 LLVMValueRef rsrc
, vindex
;
2441 rsrc
= get_image_buffer_descriptor(ctx
, instr
, false, false);
2442 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2445 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2446 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2447 ctx
->ac
.i32_0
, num_channels
,
2450 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2452 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2453 res
= ac_to_integer(&ctx
->ac
, res
);
2455 args
.opcode
= ac_image_load
;
2456 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2457 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2458 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2460 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2462 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2467 static void visit_image_store(struct ac_nir_context
*ctx
,
2468 nir_intrinsic_instr
*instr
,
2473 enum glsl_sampler_dim dim
;
2474 enum gl_access_qualifier access
;
2477 dim
= nir_intrinsic_image_dim(instr
);
2478 access
= nir_intrinsic_access(instr
);
2479 is_array
= nir_intrinsic_image_array(instr
);
2481 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2482 const struct glsl_type
*type
= image_deref
->type
;
2483 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2484 dim
= glsl_get_sampler_dim(type
);
2485 access
= var
->data
.image
.access
;
2486 is_array
= glsl_sampler_type_is_array(type
);
2489 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
2490 struct ac_image_args args
= {};
2492 args
.cache_policy
= get_cache_policy(ctx
, access
, true, writeonly_memory
);
2494 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2495 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, true, false);
2496 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2497 unsigned src_channels
= ac_get_llvm_num_components(src
);
2498 LLVMValueRef vindex
;
2500 if (src_channels
== 3)
2501 src
= ac_build_expand_to_vec4(&ctx
->ac
, src
, 3);
2503 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2504 get_src(ctx
, instr
->src
[1]),
2507 ac_build_buffer_store_format(&ctx
->ac
, rsrc
, src
, vindex
,
2508 ctx
->ac
.i32_0
, src_channels
,
2511 args
.opcode
= ac_image_store
;
2512 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2513 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2514 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2515 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2518 ac_build_image_opcode(&ctx
->ac
, &args
);
2523 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2524 const nir_intrinsic_instr
*instr
,
2527 LLVMValueRef params
[7];
2528 int param_count
= 0;
2530 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
||
2531 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_comp_swap
;
2532 const char *atomic_name
;
2533 char intrinsic_name
[64];
2534 enum ac_atomic_op atomic_subop
;
2535 MAYBE_UNUSED
int length
;
2537 enum glsl_sampler_dim dim
;
2538 bool is_unsigned
= false;
2541 if (instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_min
||
2542 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_max
) {
2543 const GLenum format
= nir_intrinsic_format(instr
);
2544 assert(format
== GL_R32UI
|| format
== GL_R32I
);
2545 is_unsigned
= format
== GL_R32UI
;
2547 dim
= nir_intrinsic_image_dim(instr
);
2548 is_array
= nir_intrinsic_image_array(instr
);
2550 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2551 is_unsigned
= glsl_get_sampler_result_type(type
) == GLSL_TYPE_UINT
;
2552 dim
= glsl_get_sampler_dim(type
);
2553 is_array
= glsl_sampler_type_is_array(type
);
2556 switch (instr
->intrinsic
) {
2557 case nir_intrinsic_bindless_image_atomic_add
:
2558 case nir_intrinsic_image_deref_atomic_add
:
2559 atomic_name
= "add";
2560 atomic_subop
= ac_atomic_add
;
2562 case nir_intrinsic_bindless_image_atomic_min
:
2563 case nir_intrinsic_image_deref_atomic_min
:
2564 atomic_name
= is_unsigned
? "umin" : "smin";
2565 atomic_subop
= is_unsigned
? ac_atomic_umin
: ac_atomic_smin
;
2567 case nir_intrinsic_bindless_image_atomic_max
:
2568 case nir_intrinsic_image_deref_atomic_max
:
2569 atomic_name
= is_unsigned
? "umax" : "smax";
2570 atomic_subop
= is_unsigned
? ac_atomic_umax
: ac_atomic_smax
;
2572 case nir_intrinsic_bindless_image_atomic_and
:
2573 case nir_intrinsic_image_deref_atomic_and
:
2574 atomic_name
= "and";
2575 atomic_subop
= ac_atomic_and
;
2577 case nir_intrinsic_bindless_image_atomic_or
:
2578 case nir_intrinsic_image_deref_atomic_or
:
2580 atomic_subop
= ac_atomic_or
;
2582 case nir_intrinsic_bindless_image_atomic_xor
:
2583 case nir_intrinsic_image_deref_atomic_xor
:
2584 atomic_name
= "xor";
2585 atomic_subop
= ac_atomic_xor
;
2587 case nir_intrinsic_bindless_image_atomic_exchange
:
2588 case nir_intrinsic_image_deref_atomic_exchange
:
2589 atomic_name
= "swap";
2590 atomic_subop
= ac_atomic_swap
;
2592 case nir_intrinsic_bindless_image_atomic_comp_swap
:
2593 case nir_intrinsic_image_deref_atomic_comp_swap
:
2594 atomic_name
= "cmpswap";
2595 atomic_subop
= 0; /* not used */
2602 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
2603 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
2605 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2606 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, true, true);
2607 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2608 ctx
->ac
.i32_0
, ""); /* vindex */
2609 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
2610 if (HAVE_LLVM
>= 0x900) {
2611 /* XXX: The new raw/struct atomic intrinsics are buggy
2612 * with LLVM 8, see r358579.
2614 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
2615 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
2617 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2618 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
2620 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
2622 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2623 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
2626 assert(length
< sizeof(intrinsic_name
));
2627 return ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
2628 params
, param_count
, 0);
2630 struct ac_image_args args
= {};
2631 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
2632 args
.atomic
= atomic_subop
;
2633 args
.data
[0] = params
[0];
2635 args
.data
[1] = params
[1];
2636 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2637 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2638 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2640 return ac_build_image_opcode(&ctx
->ac
, &args
);
2644 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
2645 const nir_intrinsic_instr
*instr
,
2648 enum glsl_sampler_dim dim
;
2651 dim
= nir_intrinsic_image_dim(instr
);
2652 is_array
= nir_intrinsic_image_array(instr
);
2654 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2655 dim
= glsl_get_sampler_dim(type
);
2656 is_array
= glsl_sampler_type_is_array(type
);
2659 struct ac_image_args args
= { 0 };
2660 args
.dim
= get_ac_sampler_dim(&ctx
->ac
, dim
, is_array
);
2662 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2663 args
.opcode
= ac_image_get_resinfo
;
2664 args
.lod
= ctx
->ac
.i32_0
;
2665 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2667 return ac_build_image_opcode(&ctx
->ac
, &args
);
2670 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
2671 const nir_intrinsic_instr
*instr
,
2676 enum glsl_sampler_dim dim
;
2679 dim
= nir_intrinsic_image_dim(instr
);
2680 is_array
= nir_intrinsic_image_array(instr
);
2682 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2683 dim
= glsl_get_sampler_dim(type
);
2684 is_array
= glsl_sampler_type_is_array(type
);
2687 if (dim
== GLSL_SAMPLER_DIM_BUF
)
2688 return get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, false), true);
2690 struct ac_image_args args
= { 0 };
2692 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2694 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2695 args
.opcode
= ac_image_get_resinfo
;
2696 args
.lod
= ctx
->ac
.i32_0
;
2697 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2699 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2701 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
2703 if (dim
== GLSL_SAMPLER_DIM_CUBE
&& is_array
) {
2704 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
2705 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2706 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
2707 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
2709 if (ctx
->ac
.chip_class
>= GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
&& is_array
) {
2710 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2711 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
2718 static void emit_membar(struct ac_llvm_context
*ac
,
2719 const nir_intrinsic_instr
*instr
)
2721 unsigned wait_flags
= 0;
2723 switch (instr
->intrinsic
) {
2724 case nir_intrinsic_memory_barrier
:
2725 case nir_intrinsic_group_memory_barrier
:
2726 wait_flags
= AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
2728 case nir_intrinsic_memory_barrier_atomic_counter
:
2729 case nir_intrinsic_memory_barrier_buffer
:
2730 case nir_intrinsic_memory_barrier_image
:
2731 wait_flags
= AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
2733 case nir_intrinsic_memory_barrier_shared
:
2734 wait_flags
= AC_WAIT_LGKM
;
2740 ac_build_waitcnt(ac
, wait_flags
);
2743 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
2745 /* GFX6 only (thanks to a hw bug workaround):
2746 * The real barrier instruction isn’t needed, because an entire patch
2747 * always fits into a single wave.
2749 if (ac
->chip_class
== GFX6
&& stage
== MESA_SHADER_TESS_CTRL
) {
2750 ac_build_waitcnt(ac
, AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
);
2753 ac_build_s_barrier(ac
);
2756 static void emit_discard(struct ac_nir_context
*ctx
,
2757 const nir_intrinsic_instr
*instr
)
2761 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
2762 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2763 get_src(ctx
, instr
->src
[0]),
2766 assert(instr
->intrinsic
== nir_intrinsic_discard
);
2767 cond
= ctx
->ac
.i1false
;
2770 ctx
->abi
->emit_kill(ctx
->abi
, cond
);
2774 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
2776 LLVMValueRef result
;
2777 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
2778 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2779 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2781 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
2785 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
2787 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2788 LLVMValueRef result
;
2789 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2790 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2791 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
2793 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
2798 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
2800 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2801 return LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2802 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
2804 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
2809 visit_first_invocation(struct ac_nir_context
*ctx
)
2811 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
2813 /* The second argument is whether cttz(0) should be defined, but we do not care. */
2814 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
2815 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
,
2817 ctx
->ac
.i64
, args
, 2,
2818 AC_FUNC_ATTR_NOUNWIND
|
2819 AC_FUNC_ATTR_READNONE
);
2821 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
2825 visit_load_shared(struct ac_nir_context
*ctx
,
2826 const nir_intrinsic_instr
*instr
)
2828 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
2830 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
2832 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
2833 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2834 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
2835 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
2838 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
2839 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2843 visit_store_shared(struct ac_nir_context
*ctx
,
2844 const nir_intrinsic_instr
*instr
)
2846 LLVMValueRef derived_ptr
, data
,index
;
2847 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2849 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1]);
2850 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
2852 int writemask
= nir_intrinsic_write_mask(instr
);
2853 for (int chan
= 0; chan
< 4; chan
++) {
2854 if (!(writemask
& (1 << chan
))) {
2857 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2858 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2859 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
2860 LLVMBuildStore(builder
, data
, derived_ptr
);
2864 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
2865 const nir_intrinsic_instr
*instr
,
2866 LLVMValueRef ptr
, int src_idx
)
2868 LLVMValueRef result
;
2869 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
2871 const char *sync_scope
= HAVE_LLVM
>= 0x0900 ? "workgroup-one-as" : "workgroup";
2873 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
2874 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
2875 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
2876 result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, src
, src1
, sync_scope
);
2877 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
2879 LLVMAtomicRMWBinOp op
;
2880 switch (instr
->intrinsic
) {
2881 case nir_intrinsic_shared_atomic_add
:
2882 case nir_intrinsic_deref_atomic_add
:
2883 op
= LLVMAtomicRMWBinOpAdd
;
2885 case nir_intrinsic_shared_atomic_umin
:
2886 case nir_intrinsic_deref_atomic_umin
:
2887 op
= LLVMAtomicRMWBinOpUMin
;
2889 case nir_intrinsic_shared_atomic_umax
:
2890 case nir_intrinsic_deref_atomic_umax
:
2891 op
= LLVMAtomicRMWBinOpUMax
;
2893 case nir_intrinsic_shared_atomic_imin
:
2894 case nir_intrinsic_deref_atomic_imin
:
2895 op
= LLVMAtomicRMWBinOpMin
;
2897 case nir_intrinsic_shared_atomic_imax
:
2898 case nir_intrinsic_deref_atomic_imax
:
2899 op
= LLVMAtomicRMWBinOpMax
;
2901 case nir_intrinsic_shared_atomic_and
:
2902 case nir_intrinsic_deref_atomic_and
:
2903 op
= LLVMAtomicRMWBinOpAnd
;
2905 case nir_intrinsic_shared_atomic_or
:
2906 case nir_intrinsic_deref_atomic_or
:
2907 op
= LLVMAtomicRMWBinOpOr
;
2909 case nir_intrinsic_shared_atomic_xor
:
2910 case nir_intrinsic_deref_atomic_xor
:
2911 op
= LLVMAtomicRMWBinOpXor
;
2913 case nir_intrinsic_shared_atomic_exchange
:
2914 case nir_intrinsic_deref_atomic_exchange
:
2915 op
= LLVMAtomicRMWBinOpXchg
;
2921 result
= ac_build_atomic_rmw(&ctx
->ac
, op
, ptr
, ac_to_integer(&ctx
->ac
, src
), sync_scope
);
2926 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
2928 LLVMValueRef values
[2];
2929 LLVMValueRef pos
[2];
2931 pos
[0] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[0]);
2932 pos
[1] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[1]);
2934 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
2935 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
2936 return ac_build_gather_values(&ctx
->ac
, values
, 2);
2939 static LLVMValueRef
barycentric_center(struct ac_nir_context
*ctx
,
2942 LLVMValueRef interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, mode
, INTERP_CENTER
);
2943 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
2946 static LLVMValueRef
barycentric_offset(struct ac_nir_context
*ctx
,
2948 LLVMValueRef offset
)
2950 LLVMValueRef interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, mode
, INTERP_CENTER
);
2951 LLVMValueRef src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_0
, ""));
2952 LLVMValueRef src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_1
, ""));
2954 LLVMValueRef ij_out
[2];
2955 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
2958 * take the I then J parameters, and the DDX/Y for it, and
2959 * calculate the IJ inputs for the interpolator.
2960 * temp1 = ddx * offset/sample.x + I;
2961 * interp_param.I = ddy * offset/sample.y + temp1;
2962 * temp1 = ddx * offset/sample.x + J;
2963 * interp_param.J = ddy * offset/sample.y + temp1;
2965 for (unsigned i
= 0; i
< 2; i
++) {
2966 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
2967 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
2968 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2969 ddxy_out
, ix_ll
, "");
2970 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2971 ddxy_out
, iy_ll
, "");
2972 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2973 interp_param
, ix_ll
, "");
2974 LLVMValueRef temp1
, temp2
;
2976 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
2979 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
2980 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
2982 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
2983 temp2
, ctx
->ac
.i32
, "");
2985 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
2986 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
2989 static LLVMValueRef
barycentric_centroid(struct ac_nir_context
*ctx
,
2992 LLVMValueRef interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, mode
, INTERP_CENTROID
);
2993 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
2996 static LLVMValueRef
barycentric_at_sample(struct ac_nir_context
*ctx
,
2998 LLVMValueRef sample_id
)
3000 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
3002 /* fetch sample ID */
3003 LLVMValueRef sample_pos
= ctx
->abi
->load_sample_position(ctx
->abi
, sample_id
);
3005 LLVMValueRef src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_0
, "");
3006 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
3007 LLVMValueRef src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_1
, "");
3008 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
3009 LLVMValueRef coords
[] = { src_c0
, src_c1
};
3010 LLVMValueRef offset
= ac_build_gather_values(&ctx
->ac
, coords
, 2);
3012 return barycentric_offset(ctx
, mode
, offset
);
3016 static LLVMValueRef
barycentric_sample(struct ac_nir_context
*ctx
,
3019 LLVMValueRef interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, mode
, INTERP_SAMPLE
);
3020 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3023 static LLVMValueRef
load_interpolated_input(struct ac_nir_context
*ctx
,
3024 LLVMValueRef interp_param
,
3025 unsigned index
, unsigned comp_start
,
3026 unsigned num_components
,
3029 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3031 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
,
3032 interp_param
, ctx
->ac
.v2f32
, "");
3033 LLVMValueRef i
= LLVMBuildExtractElement(
3034 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_0
, "");
3035 LLVMValueRef j
= LLVMBuildExtractElement(
3036 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_1
, "");
3038 LLVMValueRef values
[4];
3039 assert(bitsize
== 16 || bitsize
== 32);
3040 for (unsigned comp
= 0; comp
< num_components
; comp
++) {
3041 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, comp_start
+ comp
, false);
3042 if (bitsize
== 16) {
3043 values
[comp
] = ac_build_fs_interp_f16(&ctx
->ac
, llvm_chan
, attr_number
,
3044 ctx
->abi
->prim_mask
, i
, j
);
3046 values
[comp
] = ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3047 ctx
->abi
->prim_mask
, i
, j
);
3051 return ac_to_integer(&ctx
->ac
, ac_build_gather_values(&ctx
->ac
, values
, num_components
));
3054 static LLVMValueRef
load_flat_input(struct ac_nir_context
*ctx
,
3055 unsigned index
, unsigned comp_start
,
3056 unsigned num_components
,
3059 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3061 LLVMValueRef values
[8];
3063 /* Each component of a 64-bit value takes up two GL-level channels. */
3065 bit_size
== 64 ? num_components
* 2 : num_components
;
3067 for (unsigned chan
= 0; chan
< channels
; chan
++) {
3068 if (comp_start
+ chan
> 4)
3069 attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
+ 1, false);
3070 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, (comp_start
+ chan
) % 4, false);
3071 values
[chan
] = ac_build_fs_interp_mov(&ctx
->ac
,
3072 LLVMConstInt(ctx
->ac
.i32
, 2, false),
3075 ctx
->abi
->prim_mask
);
3076 values
[chan
] = LLVMBuildBitCast(ctx
->ac
.builder
, values
[chan
], ctx
->ac
.i32
, "");
3077 values
[chan
] = LLVMBuildTruncOrBitCast(ctx
->ac
.builder
, values
[chan
],
3078 bit_size
== 16 ? ctx
->ac
.i16
: ctx
->ac
.i32
, "");
3081 LLVMValueRef result
= ac_build_gather_values(&ctx
->ac
, values
, channels
);
3082 if (bit_size
== 64) {
3083 LLVMTypeRef type
= num_components
== 1 ? ctx
->ac
.i64
:
3084 LLVMVectorType(ctx
->ac
.i64
, num_components
);
3085 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
, type
, "");
3090 static LLVMValueRef
visit_interp(struct ac_nir_context
*ctx
,
3091 const nir_intrinsic_instr
*instr
)
3093 LLVMValueRef result
[4];
3094 LLVMValueRef interp_param
;
3097 LLVMValueRef src_c0
= NULL
;
3098 LLVMValueRef src_c1
= NULL
;
3099 LLVMValueRef src0
= NULL
;
3101 nir_deref_instr
*deref_instr
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
3102 nir_variable
*var
= nir_deref_instr_get_variable(deref_instr
);
3103 int input_base
= ctx
->abi
->fs_input_attr_indices
[var
->data
.location
- VARYING_SLOT_VAR0
];
3104 switch (instr
->intrinsic
) {
3105 case nir_intrinsic_interp_deref_at_centroid
:
3106 location
= INTERP_CENTROID
;
3108 case nir_intrinsic_interp_deref_at_sample
:
3109 case nir_intrinsic_interp_deref_at_offset
:
3110 location
= INTERP_CENTER
;
3111 src0
= get_src(ctx
, instr
->src
[1]);
3117 if (instr
->intrinsic
== nir_intrinsic_interp_deref_at_offset
) {
3118 src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, ctx
->ac
.i32_0
, ""));
3119 src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, ctx
->ac
.i32_1
, ""));
3120 } else if (instr
->intrinsic
== nir_intrinsic_interp_deref_at_sample
) {
3121 LLVMValueRef sample_position
;
3122 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
3124 /* fetch sample ID */
3125 sample_position
= ctx
->abi
->load_sample_position(ctx
->abi
, src0
);
3127 src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
, ctx
->ac
.i32_0
, "");
3128 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
3129 src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
, ctx
->ac
.i32_1
, "");
3130 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
3132 interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, var
->data
.interpolation
, location
);
3134 if (location
== INTERP_CENTER
) {
3135 LLVMValueRef ij_out
[2];
3136 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
3139 * take the I then J parameters, and the DDX/Y for it, and
3140 * calculate the IJ inputs for the interpolator.
3141 * temp1 = ddx * offset/sample.x + I;
3142 * interp_param.I = ddy * offset/sample.y + temp1;
3143 * temp1 = ddx * offset/sample.x + J;
3144 * interp_param.J = ddy * offset/sample.y + temp1;
3146 for (unsigned i
= 0; i
< 2; i
++) {
3147 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
3148 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
3149 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3150 ddxy_out
, ix_ll
, "");
3151 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3152 ddxy_out
, iy_ll
, "");
3153 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3154 interp_param
, ix_ll
, "");
3155 LLVMValueRef temp1
, temp2
;
3157 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
3160 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
3161 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
3163 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
3164 temp2
, ctx
->ac
.i32
, "");
3166 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
3170 LLVMValueRef attrib_idx
= ctx
->ac
.i32_0
;
3171 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3172 if (deref_instr
->deref_type
== nir_deref_type_array
) {
3173 unsigned array_size
= glsl_count_attribute_slots(deref_instr
->type
, false);
3175 LLVMValueRef offset
;
3176 if (nir_src_is_const(deref_instr
->arr
.index
)) {
3177 offset
= LLVMConstInt(ctx
->ac
.i32
, array_size
* nir_src_as_uint(deref_instr
->arr
.index
), false);
3179 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3181 offset
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3182 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
3185 attrib_idx
= LLVMBuildAdd(ctx
->ac
.builder
, attrib_idx
, offset
, "");
3186 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3187 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
3188 LLVMValueRef offset
;
3189 unsigned sidx
= deref_instr
->strct
.index
;
3190 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3191 offset
= LLVMConstInt(ctx
->ac
.i32
, glsl_get_struct_location_offset(deref_instr
->type
, sidx
), false);
3192 attrib_idx
= LLVMBuildAdd(ctx
->ac
.builder
, attrib_idx
, offset
, "");
3194 unreachable("Unsupported deref type");
3199 unsigned attrib_size
= glsl_count_attribute_slots(var
->type
, false);
3200 for (chan
= 0; chan
< 4; chan
++) {
3201 LLVMValueRef gather
= LLVMGetUndef(LLVMVectorType(ctx
->ac
.f32
, attrib_size
));
3202 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, chan
, false);
3204 for (unsigned idx
= 0; idx
< attrib_size
; ++idx
) {
3205 LLVMValueRef v
, attr_number
;
3207 attr_number
= LLVMConstInt(ctx
->ac
.i32
, input_base
+ idx
, false);
3209 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
,
3210 interp_param
, ctx
->ac
.v2f32
, "");
3211 LLVMValueRef i
= LLVMBuildExtractElement(
3212 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_0
, "");
3213 LLVMValueRef j
= LLVMBuildExtractElement(
3214 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_1
, "");
3216 v
= ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3217 ctx
->abi
->prim_mask
, i
, j
);
3219 v
= ac_build_fs_interp_mov(&ctx
->ac
, LLVMConstInt(ctx
->ac
.i32
, 2, false),
3220 llvm_chan
, attr_number
, ctx
->abi
->prim_mask
);
3223 gather
= LLVMBuildInsertElement(ctx
->ac
.builder
, gather
, v
,
3224 LLVMConstInt(ctx
->ac
.i32
, idx
, false), "");
3227 result
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
, gather
, attrib_idx
, "");
3230 return ac_build_varying_gather_values(&ctx
->ac
, result
, instr
->num_components
,
3231 var
->data
.location_frac
);
3234 static void visit_intrinsic(struct ac_nir_context
*ctx
,
3235 nir_intrinsic_instr
*instr
)
3237 LLVMValueRef result
= NULL
;
3239 switch (instr
->intrinsic
) {
3240 case nir_intrinsic_ballot
:
3241 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3243 case nir_intrinsic_read_invocation
:
3244 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3245 get_src(ctx
, instr
->src
[1]));
3247 case nir_intrinsic_read_first_invocation
:
3248 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
3250 case nir_intrinsic_load_subgroup_invocation
:
3251 result
= ac_get_thread_id(&ctx
->ac
);
3253 case nir_intrinsic_load_work_group_id
: {
3254 LLVMValueRef values
[3];
3256 for (int i
= 0; i
< 3; i
++) {
3257 values
[i
] = ctx
->abi
->workgroup_ids
[i
] ?
3258 ctx
->abi
->workgroup_ids
[i
] : ctx
->ac
.i32_0
;
3261 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
3264 case nir_intrinsic_load_base_vertex
:
3265 case nir_intrinsic_load_first_vertex
:
3266 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
3268 case nir_intrinsic_load_local_group_size
:
3269 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
3271 case nir_intrinsic_load_vertex_id
:
3272 result
= LLVMBuildAdd(ctx
->ac
.builder
, ctx
->abi
->vertex_id
,
3273 ctx
->abi
->base_vertex
, "");
3275 case nir_intrinsic_load_vertex_id_zero_base
: {
3276 result
= ctx
->abi
->vertex_id
;
3279 case nir_intrinsic_load_local_invocation_id
: {
3280 result
= ctx
->abi
->local_invocation_ids
;
3283 case nir_intrinsic_load_base_instance
:
3284 result
= ctx
->abi
->start_instance
;
3286 case nir_intrinsic_load_draw_id
:
3287 result
= ctx
->abi
->draw_id
;
3289 case nir_intrinsic_load_view_index
:
3290 result
= ctx
->abi
->view_index
;
3292 case nir_intrinsic_load_invocation_id
:
3293 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3294 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->tcs_rel_ids
, 8, 5);
3296 if (ctx
->ac
.chip_class
>= GFX10
) {
3297 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3298 ctx
->abi
->gs_invocation_id
,
3299 LLVMConstInt(ctx
->ac
.i32
, 127, 0), "");
3301 result
= ctx
->abi
->gs_invocation_id
;
3305 case nir_intrinsic_load_primitive_id
:
3306 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3307 result
= ctx
->abi
->gs_prim_id
;
3308 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3309 result
= ctx
->abi
->tcs_patch_id
;
3310 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3311 result
= ctx
->abi
->tes_patch_id
;
3313 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3315 case nir_intrinsic_load_sample_id
:
3316 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->ancillary
, 8, 4);
3318 case nir_intrinsic_load_sample_pos
:
3319 result
= load_sample_pos(ctx
);
3321 case nir_intrinsic_load_sample_mask_in
:
3322 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3324 case nir_intrinsic_load_frag_coord
: {
3325 LLVMValueRef values
[4] = {
3326 ctx
->abi
->frag_pos
[0],
3327 ctx
->abi
->frag_pos
[1],
3328 ctx
->abi
->frag_pos
[2],
3329 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
, ctx
->abi
->frag_pos
[3])
3331 result
= ac_to_integer(&ctx
->ac
,
3332 ac_build_gather_values(&ctx
->ac
, values
, 4));
3335 case nir_intrinsic_load_layer_id
:
3336 result
= ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)];
3338 case nir_intrinsic_load_front_face
:
3339 result
= ctx
->abi
->front_face
;
3341 case nir_intrinsic_load_helper_invocation
:
3342 result
= ac_build_load_helper_invocation(&ctx
->ac
);
3344 case nir_intrinsic_load_instance_id
:
3345 result
= ctx
->abi
->instance_id
;
3347 case nir_intrinsic_load_num_work_groups
:
3348 result
= ctx
->abi
->num_work_groups
;
3350 case nir_intrinsic_load_local_invocation_index
:
3351 result
= visit_load_local_invocation_index(ctx
);
3353 case nir_intrinsic_load_subgroup_id
:
3354 result
= visit_load_subgroup_id(ctx
);
3356 case nir_intrinsic_load_num_subgroups
:
3357 result
= visit_load_num_subgroups(ctx
);
3359 case nir_intrinsic_first_invocation
:
3360 result
= visit_first_invocation(ctx
);
3362 case nir_intrinsic_load_push_constant
:
3363 result
= visit_load_push_constant(ctx
, instr
);
3365 case nir_intrinsic_vulkan_resource_index
: {
3366 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3367 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3368 unsigned binding
= nir_intrinsic_binding(instr
);
3370 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3374 case nir_intrinsic_vulkan_resource_reindex
:
3375 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3377 case nir_intrinsic_store_ssbo
:
3378 visit_store_ssbo(ctx
, instr
);
3380 case nir_intrinsic_load_ssbo
:
3381 result
= visit_load_buffer(ctx
, instr
);
3383 case nir_intrinsic_ssbo_atomic_add
:
3384 case nir_intrinsic_ssbo_atomic_imin
:
3385 case nir_intrinsic_ssbo_atomic_umin
:
3386 case nir_intrinsic_ssbo_atomic_imax
:
3387 case nir_intrinsic_ssbo_atomic_umax
:
3388 case nir_intrinsic_ssbo_atomic_and
:
3389 case nir_intrinsic_ssbo_atomic_or
:
3390 case nir_intrinsic_ssbo_atomic_xor
:
3391 case nir_intrinsic_ssbo_atomic_exchange
:
3392 case nir_intrinsic_ssbo_atomic_comp_swap
:
3393 result
= visit_atomic_ssbo(ctx
, instr
);
3395 case nir_intrinsic_load_ubo
:
3396 result
= visit_load_ubo_buffer(ctx
, instr
);
3398 case nir_intrinsic_get_buffer_size
:
3399 result
= visit_get_buffer_size(ctx
, instr
);
3401 case nir_intrinsic_load_deref
:
3402 result
= visit_load_var(ctx
, instr
);
3404 case nir_intrinsic_store_deref
:
3405 visit_store_var(ctx
, instr
);
3407 case nir_intrinsic_load_shared
:
3408 result
= visit_load_shared(ctx
, instr
);
3410 case nir_intrinsic_store_shared
:
3411 visit_store_shared(ctx
, instr
);
3413 case nir_intrinsic_bindless_image_samples
:
3414 result
= visit_image_samples(ctx
, instr
, true);
3416 case nir_intrinsic_image_deref_samples
:
3417 result
= visit_image_samples(ctx
, instr
, false);
3419 case nir_intrinsic_bindless_image_load
:
3420 result
= visit_image_load(ctx
, instr
, true);
3422 case nir_intrinsic_image_deref_load
:
3423 result
= visit_image_load(ctx
, instr
, false);
3425 case nir_intrinsic_bindless_image_store
:
3426 visit_image_store(ctx
, instr
, true);
3428 case nir_intrinsic_image_deref_store
:
3429 visit_image_store(ctx
, instr
, false);
3431 case nir_intrinsic_bindless_image_atomic_add
:
3432 case nir_intrinsic_bindless_image_atomic_min
:
3433 case nir_intrinsic_bindless_image_atomic_max
:
3434 case nir_intrinsic_bindless_image_atomic_and
:
3435 case nir_intrinsic_bindless_image_atomic_or
:
3436 case nir_intrinsic_bindless_image_atomic_xor
:
3437 case nir_intrinsic_bindless_image_atomic_exchange
:
3438 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3439 result
= visit_image_atomic(ctx
, instr
, true);
3441 case nir_intrinsic_image_deref_atomic_add
:
3442 case nir_intrinsic_image_deref_atomic_min
:
3443 case nir_intrinsic_image_deref_atomic_max
:
3444 case nir_intrinsic_image_deref_atomic_and
:
3445 case nir_intrinsic_image_deref_atomic_or
:
3446 case nir_intrinsic_image_deref_atomic_xor
:
3447 case nir_intrinsic_image_deref_atomic_exchange
:
3448 case nir_intrinsic_image_deref_atomic_comp_swap
:
3449 result
= visit_image_atomic(ctx
, instr
, false);
3451 case nir_intrinsic_bindless_image_size
:
3452 result
= visit_image_size(ctx
, instr
, true);
3454 case nir_intrinsic_image_deref_size
:
3455 result
= visit_image_size(ctx
, instr
, false);
3457 case nir_intrinsic_shader_clock
:
3458 result
= ac_build_shader_clock(&ctx
->ac
);
3460 case nir_intrinsic_discard
:
3461 case nir_intrinsic_discard_if
:
3462 emit_discard(ctx
, instr
);
3464 case nir_intrinsic_memory_barrier
:
3465 case nir_intrinsic_group_memory_barrier
:
3466 case nir_intrinsic_memory_barrier_atomic_counter
:
3467 case nir_intrinsic_memory_barrier_buffer
:
3468 case nir_intrinsic_memory_barrier_image
:
3469 case nir_intrinsic_memory_barrier_shared
:
3470 emit_membar(&ctx
->ac
, instr
);
3472 case nir_intrinsic_barrier
:
3473 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
3475 case nir_intrinsic_shared_atomic_add
:
3476 case nir_intrinsic_shared_atomic_imin
:
3477 case nir_intrinsic_shared_atomic_umin
:
3478 case nir_intrinsic_shared_atomic_imax
:
3479 case nir_intrinsic_shared_atomic_umax
:
3480 case nir_intrinsic_shared_atomic_and
:
3481 case nir_intrinsic_shared_atomic_or
:
3482 case nir_intrinsic_shared_atomic_xor
:
3483 case nir_intrinsic_shared_atomic_exchange
:
3484 case nir_intrinsic_shared_atomic_comp_swap
: {
3485 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
3486 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3489 case nir_intrinsic_deref_atomic_add
:
3490 case nir_intrinsic_deref_atomic_imin
:
3491 case nir_intrinsic_deref_atomic_umin
:
3492 case nir_intrinsic_deref_atomic_imax
:
3493 case nir_intrinsic_deref_atomic_umax
:
3494 case nir_intrinsic_deref_atomic_and
:
3495 case nir_intrinsic_deref_atomic_or
:
3496 case nir_intrinsic_deref_atomic_xor
:
3497 case nir_intrinsic_deref_atomic_exchange
:
3498 case nir_intrinsic_deref_atomic_comp_swap
: {
3499 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
3500 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3503 case nir_intrinsic_interp_deref_at_centroid
:
3504 case nir_intrinsic_interp_deref_at_sample
:
3505 case nir_intrinsic_interp_deref_at_offset
:
3506 result
= visit_interp(ctx
, instr
);
3508 case nir_intrinsic_load_barycentric_pixel
:
3509 result
= barycentric_center(ctx
, nir_intrinsic_interp_mode(instr
));
3511 case nir_intrinsic_load_barycentric_centroid
:
3512 result
= barycentric_centroid(ctx
, nir_intrinsic_interp_mode(instr
));
3514 case nir_intrinsic_load_barycentric_sample
:
3515 result
= barycentric_sample(ctx
, nir_intrinsic_interp_mode(instr
));
3517 case nir_intrinsic_load_barycentric_at_offset
: {
3518 LLVMValueRef offset
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3519 result
= barycentric_offset(ctx
, nir_intrinsic_interp_mode(instr
), offset
);
3522 case nir_intrinsic_load_barycentric_at_sample
: {
3523 LLVMValueRef sample_id
= get_src(ctx
, instr
->src
[0]);
3524 result
= barycentric_at_sample(ctx
, nir_intrinsic_interp_mode(instr
), sample_id
);
3527 case nir_intrinsic_load_interpolated_input
: {
3528 /* We assume any indirect loads have been lowered away */
3529 MAYBE_UNUSED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[1]);
3531 assert(offset
[0].i32
== 0);
3533 LLVMValueRef interp_param
= get_src(ctx
, instr
->src
[0]);
3534 unsigned index
= nir_intrinsic_base(instr
);
3535 unsigned component
= nir_intrinsic_component(instr
);
3536 result
= load_interpolated_input(ctx
, interp_param
, index
,
3538 instr
->dest
.ssa
.num_components
,
3539 instr
->dest
.ssa
.bit_size
);
3542 case nir_intrinsic_load_input
: {
3543 /* We only lower inputs for fragment shaders ATM */
3544 MAYBE_UNUSED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[0]);
3546 assert(offset
[0].i32
== 0);
3548 unsigned index
= nir_intrinsic_base(instr
);
3549 unsigned component
= nir_intrinsic_component(instr
);
3550 result
= load_flat_input(ctx
, index
, component
,
3551 instr
->dest
.ssa
.num_components
,
3552 instr
->dest
.ssa
.bit_size
);
3555 case nir_intrinsic_emit_vertex
:
3556 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
3558 case nir_intrinsic_end_primitive
:
3559 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
3561 case nir_intrinsic_load_tess_coord
:
3562 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
3564 case nir_intrinsic_load_tess_level_outer
:
3565 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
);
3567 case nir_intrinsic_load_tess_level_inner
:
3568 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
);
3570 case nir_intrinsic_load_patch_vertices_in
:
3571 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
3573 case nir_intrinsic_vote_all
: {
3574 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3575 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3578 case nir_intrinsic_vote_any
: {
3579 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3580 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3583 case nir_intrinsic_shuffle
:
3584 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3585 get_src(ctx
, instr
->src
[1]));
3587 case nir_intrinsic_reduce
:
3588 result
= ac_build_reduce(&ctx
->ac
,
3589 get_src(ctx
, instr
->src
[0]),
3590 instr
->const_index
[0],
3591 instr
->const_index
[1]);
3593 case nir_intrinsic_inclusive_scan
:
3594 result
= ac_build_inclusive_scan(&ctx
->ac
,
3595 get_src(ctx
, instr
->src
[0]),
3596 instr
->const_index
[0]);
3598 case nir_intrinsic_exclusive_scan
:
3599 result
= ac_build_exclusive_scan(&ctx
->ac
,
3600 get_src(ctx
, instr
->src
[0]),
3601 instr
->const_index
[0]);
3603 case nir_intrinsic_quad_broadcast
: {
3604 unsigned lane
= nir_src_as_uint(instr
->src
[1]);
3605 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3606 lane
, lane
, lane
, lane
);
3609 case nir_intrinsic_quad_swap_horizontal
:
3610 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
3612 case nir_intrinsic_quad_swap_vertical
:
3613 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
3615 case nir_intrinsic_quad_swap_diagonal
:
3616 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
3618 case nir_intrinsic_quad_swizzle_amd
: {
3619 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3620 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3621 mask
& 0x3, (mask
>> 2) & 0x3,
3622 (mask
>> 4) & 0x3, (mask
>> 6) & 0x3);
3625 case nir_intrinsic_masked_swizzle_amd
: {
3626 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3627 result
= ac_build_ds_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), mask
);
3630 case nir_intrinsic_write_invocation_amd
:
3631 result
= ac_build_writelane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3632 get_src(ctx
, instr
->src
[1]),
3633 get_src(ctx
, instr
->src
[2]));
3635 case nir_intrinsic_mbcnt_amd
:
3636 result
= ac_build_mbcnt(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3639 fprintf(stderr
, "Unknown intrinsic: ");
3640 nir_print_instr(&instr
->instr
, stderr
);
3641 fprintf(stderr
, "\n");
3645 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3649 static LLVMValueRef
get_bindless_index_from_uniform(struct ac_nir_context
*ctx
,
3650 unsigned base_index
,
3651 unsigned constant_index
,
3652 LLVMValueRef dynamic_index
)
3654 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, base_index
* 4, 0);
3655 LLVMValueRef index
= LLVMBuildAdd(ctx
->ac
.builder
, dynamic_index
,
3656 LLVMConstInt(ctx
->ac
.i32
, constant_index
, 0), "");
3658 /* Bindless uniforms are 64bit so multiple index by 8 */
3659 index
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i32
, 8, 0), "");
3660 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, index
, "");
3662 LLVMValueRef ubo_index
= ctx
->abi
->load_ubo(ctx
->abi
, ctx
->ac
.i32_0
);
3664 LLVMValueRef ret
= ac_build_buffer_load(&ctx
->ac
, ubo_index
, 1, NULL
, offset
,
3665 NULL
, 0, 0, true, true);
3667 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ctx
->ac
.i32
, "");
3670 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
3671 nir_deref_instr
*deref_instr
,
3672 enum ac_descriptor_type desc_type
,
3673 const nir_instr
*instr
,
3674 bool image
, bool write
)
3676 LLVMValueRef index
= NULL
;
3677 unsigned constant_index
= 0;
3678 unsigned descriptor_set
;
3679 unsigned base_index
;
3680 bool bindless
= false;
3685 nir_intrinsic_instr
*img_instr
= nir_instr_as_intrinsic(instr
);
3688 index
= get_src(ctx
, img_instr
->src
[0]);
3690 nir_tex_instr
*tex_instr
= nir_instr_as_tex(instr
);
3691 int sampSrcIdx
= nir_tex_instr_src_index(tex_instr
,
3692 nir_tex_src_sampler_handle
);
3693 if (sampSrcIdx
!= -1) {
3696 index
= get_src(ctx
, tex_instr
->src
[sampSrcIdx
].src
);
3698 assert(tex_instr
&& !image
);
3699 base_index
= tex_instr
->sampler_index
;
3703 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3704 if (deref_instr
->deref_type
== nir_deref_type_array
) {
3705 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
3709 if (nir_src_is_const(deref_instr
->arr
.index
)) {
3710 constant_index
+= array_size
* nir_src_as_uint(deref_instr
->arr
.index
);
3712 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3714 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3715 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
3720 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
3723 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3724 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
3725 unsigned sidx
= deref_instr
->strct
.index
;
3726 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3727 constant_index
+= glsl_get_struct_location_offset(deref_instr
->type
, sidx
);
3729 unreachable("Unsupported deref type");
3732 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
3734 if (deref_instr
->var
->data
.bindless
) {
3735 /* For now just assert on unhandled variable types */
3736 assert(deref_instr
->var
->data
.mode
== nir_var_uniform
);
3738 base_index
= deref_instr
->var
->data
.driver_location
;
3741 index
= index
? index
: ctx
->ac
.i32_0
;
3742 index
= get_bindless_index_from_uniform(ctx
, base_index
,
3743 constant_index
, index
);
3745 base_index
= deref_instr
->var
->data
.binding
;
3748 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
3751 constant_index
, index
,
3752 desc_type
, image
, write
, bindless
);
3755 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
3758 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
3759 * filtering manually. The driver sets img7 to a mask clearing
3760 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
3761 * s_and_b32 samp0, samp0, img7
3764 * The ANISO_OVERRIDE sampler field enables this fix in TA.
3766 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
3767 LLVMValueRef res
, LLVMValueRef samp
)
3769 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3770 LLVMValueRef img7
, samp0
;
3772 if (ctx
->ac
.chip_class
>= GFX8
)
3775 img7
= LLVMBuildExtractElement(builder
, res
,
3776 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
3777 samp0
= LLVMBuildExtractElement(builder
, samp
,
3778 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3779 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
3780 return LLVMBuildInsertElement(builder
, samp
, samp0
,
3781 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3784 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
3785 nir_tex_instr
*instr
,
3786 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
3787 LLVMValueRef
*fmask_ptr
)
3789 nir_deref_instr
*texture_deref_instr
= NULL
;
3790 nir_deref_instr
*sampler_deref_instr
= NULL
;
3793 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3794 switch (instr
->src
[i
].src_type
) {
3795 case nir_tex_src_texture_deref
:
3796 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3798 case nir_tex_src_sampler_deref
:
3799 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3801 case nir_tex_src_plane
:
3802 plane
= nir_src_as_int(instr
->src
[i
].src
);
3809 if (!sampler_deref_instr
)
3810 sampler_deref_instr
= texture_deref_instr
;
3812 enum ac_descriptor_type main_descriptor
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
? AC_DESC_BUFFER
: AC_DESC_IMAGE
;
3815 assert(instr
->op
!= nir_texop_txf_ms
&&
3816 instr
->op
!= nir_texop_samples_identical
);
3817 assert(instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
);
3819 main_descriptor
= AC_DESC_PLANE_0
+ plane
;
3822 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, main_descriptor
, &instr
->instr
, false, false);
3825 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, &instr
->instr
, false, false);
3826 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
3827 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
3829 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
3830 instr
->op
== nir_texop_samples_identical
))
3831 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
, &instr
->instr
, false, false);
3834 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
3837 coord
= ac_to_float(ctx
, coord
);
3838 coord
= ac_build_round(ctx
, coord
);
3839 coord
= ac_to_integer(ctx
, coord
);
3843 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
3845 LLVMValueRef result
= NULL
;
3846 struct ac_image_args args
= { 0 };
3847 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
3848 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
3849 unsigned offset_src
= 0;
3851 tex_fetch_ptrs(ctx
, instr
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
3853 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3854 switch (instr
->src
[i
].src_type
) {
3855 case nir_tex_src_coord
: {
3856 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
3857 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
3858 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
3861 case nir_tex_src_projector
:
3863 case nir_tex_src_comparator
:
3864 if (instr
->is_shadow
)
3865 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
3867 case nir_tex_src_offset
:
3868 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
3871 case nir_tex_src_bias
:
3872 if (instr
->op
== nir_texop_txb
)
3873 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
3875 case nir_tex_src_lod
: {
3876 if (nir_src_is_const(instr
->src
[i
].src
) && nir_src_as_uint(instr
->src
[i
].src
) == 0)
3877 args
.level_zero
= true;
3879 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
3882 case nir_tex_src_ms_index
:
3883 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
3885 case nir_tex_src_ms_mcs
:
3887 case nir_tex_src_ddx
:
3888 ddx
= get_src(ctx
, instr
->src
[i
].src
);
3890 case nir_tex_src_ddy
:
3891 ddy
= get_src(ctx
, instr
->src
[i
].src
);
3893 case nir_tex_src_texture_offset
:
3894 case nir_tex_src_sampler_offset
:
3895 case nir_tex_src_plane
:
3901 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
3902 result
= get_buffer_size(ctx
, args
.resource
, true);
3906 if (instr
->op
== nir_texop_texture_samples
) {
3907 LLVMValueRef res
, samples
, is_msaa
;
3908 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
3909 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
3910 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
3911 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
3912 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
3913 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
3914 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
3915 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
3916 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
3918 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
3919 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
3920 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
3921 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
3922 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
3924 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
3930 if (args
.offset
&& instr
->op
!= nir_texop_txf
) {
3931 LLVMValueRef offset
[3], pack
;
3932 for (unsigned chan
= 0; chan
< 3; ++chan
)
3933 offset
[chan
] = ctx
->ac
.i32_0
;
3935 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
3936 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
3937 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
3938 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
3939 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
3941 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
3942 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
3944 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
3945 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
3949 /* TC-compatible HTILE on radeonsi promotes Z16 and Z24 to Z32_FLOAT,
3950 * so the depth comparison value isn't clamped for Z16 and
3951 * Z24 anymore. Do it manually here.
3953 * It's unnecessary if the original texture format was
3954 * Z32_FLOAT, but we don't know that here.
3956 if (args
.compare
&& ctx
->ac
.chip_class
>= GFX8
&& ctx
->abi
->clamp_shadow_reference
)
3957 args
.compare
= ac_build_clamp(&ctx
->ac
, ac_to_float(&ctx
->ac
, args
.compare
));
3959 /* pack derivatives */
3961 int num_src_deriv_channels
, num_dest_deriv_channels
;
3962 switch (instr
->sampler_dim
) {
3963 case GLSL_SAMPLER_DIM_3D
:
3964 case GLSL_SAMPLER_DIM_CUBE
:
3965 num_src_deriv_channels
= 3;
3966 num_dest_deriv_channels
= 3;
3968 case GLSL_SAMPLER_DIM_2D
:
3970 num_src_deriv_channels
= 2;
3971 num_dest_deriv_channels
= 2;
3973 case GLSL_SAMPLER_DIM_1D
:
3974 num_src_deriv_channels
= 1;
3975 if (ctx
->ac
.chip_class
>= GFX9
) {
3976 num_dest_deriv_channels
= 2;
3978 num_dest_deriv_channels
= 1;
3983 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
3984 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
3985 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
3986 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
3987 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
3989 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
3990 args
.derivs
[i
] = ctx
->ac
.f32_0
;
3991 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
3995 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
3996 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
3997 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
3998 if (instr
->coord_components
== 3)
3999 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
4000 ac_prepare_cube_coords(&ctx
->ac
,
4001 instr
->op
== nir_texop_txd
, instr
->is_array
,
4002 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
4005 /* Texture coordinates fixups */
4006 if (instr
->coord_components
> 1 &&
4007 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4009 instr
->op
!= nir_texop_txf
) {
4010 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
4013 if (instr
->coord_components
> 2 &&
4014 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
4015 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
4016 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
4017 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
4019 instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
4020 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
4023 if (ctx
->ac
.chip_class
>= GFX9
&&
4024 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4025 instr
->op
!= nir_texop_lod
) {
4026 LLVMValueRef filler
;
4027 if (instr
->op
== nir_texop_txf
)
4028 filler
= ctx
->ac
.i32_0
;
4030 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
4032 if (instr
->is_array
)
4033 args
.coords
[2] = args
.coords
[1];
4034 args
.coords
[1] = filler
;
4037 /* Pack sample index */
4038 if (instr
->op
== nir_texop_txf_ms
&& sample_index
)
4039 args
.coords
[instr
->coord_components
] = sample_index
;
4041 if (instr
->op
== nir_texop_samples_identical
) {
4042 struct ac_image_args txf_args
= { 0 };
4043 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
4045 txf_args
.dmask
= 0xf;
4046 txf_args
.resource
= fmask_ptr
;
4047 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
4048 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
4050 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4051 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
4055 if ((instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
||
4056 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
) &&
4057 instr
->op
!= nir_texop_txs
) {
4058 unsigned sample_chan
= instr
->is_array
? 3 : 2;
4059 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
4060 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
4061 instr
->is_array
? args
.coords
[2] : NULL
,
4062 args
.coords
[sample_chan
], fmask_ptr
);
4065 if (args
.offset
&& instr
->op
== nir_texop_txf
) {
4066 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
4067 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
4068 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
4069 args
.coords
[i
] = LLVMBuildAdd(
4070 ctx
->ac
.builder
, args
.coords
[i
],
4071 LLVMConstInt(ctx
->ac
.i32
, nir_src_comp_as_uint(instr
->src
[offset_src
].src
, i
), false), "");
4076 /* DMASK was repurposed for GATHER4. 4 components are always
4077 * returned and DMASK works like a swizzle - it selects
4078 * the component to fetch. The only valid DMASK values are
4079 * 1=red, 2=green, 4=blue, 8=alpha. (e.g. 1 returns
4080 * (red,red,red,red) etc.) The ISA document doesn't mention
4084 if (instr
->op
== nir_texop_tg4
) {
4085 if (instr
->is_shadow
)
4088 args
.dmask
= 1 << instr
->component
;
4091 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
)
4092 args
.dim
= get_ac_sampler_dim(&ctx
->ac
, instr
->sampler_dim
, instr
->is_array
);
4093 result
= build_tex_intrinsic(ctx
, instr
, &args
);
4095 if (instr
->op
== nir_texop_query_levels
)
4096 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4097 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
4098 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
4099 instr
->op
!= nir_texop_tg4
)
4100 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4101 else if (instr
->op
== nir_texop_txs
&&
4102 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
4104 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4105 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
4106 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4107 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
4108 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
4109 } else if (ctx
->ac
.chip_class
>= GFX9
&&
4110 instr
->op
== nir_texop_txs
&&
4111 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4113 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4114 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4115 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
4117 } else if (instr
->dest
.ssa
.num_components
!= 4)
4118 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
4122 assert(instr
->dest
.is_ssa
);
4123 result
= ac_to_integer(&ctx
->ac
, result
);
4124 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4129 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
4131 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
4132 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
4134 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4135 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
4138 static void visit_post_phi(struct ac_nir_context
*ctx
,
4139 nir_phi_instr
*instr
,
4140 LLVMValueRef llvm_phi
)
4142 nir_foreach_phi_src(src
, instr
) {
4143 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
4144 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
4146 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
4150 static void phi_post_pass(struct ac_nir_context
*ctx
)
4152 hash_table_foreach(ctx
->phis
, entry
) {
4153 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
4154 (LLVMValueRef
)entry
->data
);
4159 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
4160 const nir_ssa_undef_instr
*instr
)
4162 unsigned num_components
= instr
->def
.num_components
;
4163 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
4166 if (num_components
== 1)
4167 undef
= LLVMGetUndef(type
);
4169 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
4171 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
4174 static void visit_jump(struct ac_llvm_context
*ctx
,
4175 const nir_jump_instr
*instr
)
4177 switch (instr
->type
) {
4178 case nir_jump_break
:
4179 ac_build_break(ctx
);
4181 case nir_jump_continue
:
4182 ac_build_continue(ctx
);
4185 fprintf(stderr
, "Unknown NIR jump instr: ");
4186 nir_print_instr(&instr
->instr
, stderr
);
4187 fprintf(stderr
, "\n");
4193 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
4194 enum glsl_base_type type
)
4198 case GLSL_TYPE_UINT
:
4199 case GLSL_TYPE_BOOL
:
4200 case GLSL_TYPE_SUBROUTINE
:
4202 case GLSL_TYPE_INT8
:
4203 case GLSL_TYPE_UINT8
:
4205 case GLSL_TYPE_INT16
:
4206 case GLSL_TYPE_UINT16
:
4208 case GLSL_TYPE_FLOAT
:
4210 case GLSL_TYPE_FLOAT16
:
4212 case GLSL_TYPE_INT64
:
4213 case GLSL_TYPE_UINT64
:
4215 case GLSL_TYPE_DOUBLE
:
4218 unreachable("unknown GLSL type");
4223 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
4224 const struct glsl_type
*type
)
4226 if (glsl_type_is_scalar(type
)) {
4227 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
4230 if (glsl_type_is_vector(type
)) {
4231 return LLVMVectorType(
4232 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
4233 glsl_get_vector_elements(type
));
4236 if (glsl_type_is_matrix(type
)) {
4237 return LLVMArrayType(
4238 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
4239 glsl_get_matrix_columns(type
));
4242 if (glsl_type_is_array(type
)) {
4243 return LLVMArrayType(
4244 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
4245 glsl_get_length(type
));
4248 assert(glsl_type_is_struct_or_ifc(type
));
4250 LLVMTypeRef member_types
[glsl_get_length(type
)];
4252 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
4254 glsl_to_llvm_type(ac
,
4255 glsl_get_struct_field(type
, i
));
4258 return LLVMStructTypeInContext(ac
->context
, member_types
,
4259 glsl_get_length(type
), false);
4262 static void visit_deref(struct ac_nir_context
*ctx
,
4263 nir_deref_instr
*instr
)
4265 if (instr
->mode
!= nir_var_mem_shared
&&
4266 instr
->mode
!= nir_var_mem_global
)
4269 LLVMValueRef result
= NULL
;
4270 switch(instr
->deref_type
) {
4271 case nir_deref_type_var
: {
4272 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
4273 result
= entry
->data
;
4276 case nir_deref_type_struct
:
4277 if (instr
->mode
== nir_var_mem_global
) {
4278 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4279 uint64_t offset
= glsl_get_struct_field_offset(parent
->type
,
4280 instr
->strct
.index
);
4281 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4282 LLVMConstInt(ctx
->ac
.i32
, offset
, 0));
4284 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4285 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
4288 case nir_deref_type_array
:
4289 if (instr
->mode
== nir_var_mem_global
) {
4290 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4291 unsigned stride
= glsl_get_explicit_stride(parent
->type
);
4293 if ((glsl_type_is_matrix(parent
->type
) &&
4294 glsl_matrix_type_is_row_major(parent
->type
)) ||
4295 (glsl_type_is_vector(parent
->type
) && stride
== 0))
4296 stride
= type_scalar_size_bytes(parent
->type
);
4299 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4300 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4301 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4303 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4305 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4307 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4308 get_src(ctx
, instr
->arr
.index
));
4311 case nir_deref_type_ptr_as_array
:
4312 if (instr
->mode
== nir_var_mem_global
) {
4313 unsigned stride
= nir_deref_instr_ptr_as_array_stride(instr
);
4315 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4316 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4317 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4319 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4321 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4323 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4324 get_src(ctx
, instr
->arr
.index
));
4327 case nir_deref_type_cast
: {
4328 result
= get_src(ctx
, instr
->parent
);
4330 /* We can't use the structs from LLVM because the shader
4331 * specifies its own offsets. */
4332 LLVMTypeRef pointee_type
= ctx
->ac
.i8
;
4333 if (instr
->mode
== nir_var_mem_shared
)
4334 pointee_type
= glsl_to_llvm_type(&ctx
->ac
, instr
->type
);
4336 unsigned address_space
;
4338 switch(instr
->mode
) {
4339 case nir_var_mem_shared
:
4340 address_space
= AC_ADDR_SPACE_LDS
;
4342 case nir_var_mem_global
:
4343 address_space
= AC_ADDR_SPACE_GLOBAL
;
4346 unreachable("Unhandled address space");
4349 LLVMTypeRef type
= LLVMPointerType(pointee_type
, address_space
);
4351 if (LLVMTypeOf(result
) != type
) {
4352 if (LLVMGetTypeKind(LLVMTypeOf(result
)) == LLVMVectorTypeKind
) {
4353 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
,
4356 result
= LLVMBuildIntToPtr(ctx
->ac
.builder
, result
,
4363 unreachable("Unhandled deref_instr deref type");
4366 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4369 static void visit_cf_list(struct ac_nir_context
*ctx
,
4370 struct exec_list
*list
);
4372 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
4374 LLVMBasicBlockRef llvm_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
4375 nir_foreach_instr(instr
, block
)
4377 switch (instr
->type
) {
4378 case nir_instr_type_alu
:
4379 visit_alu(ctx
, nir_instr_as_alu(instr
));
4381 case nir_instr_type_load_const
:
4382 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
4384 case nir_instr_type_intrinsic
:
4385 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
4387 case nir_instr_type_tex
:
4388 visit_tex(ctx
, nir_instr_as_tex(instr
));
4390 case nir_instr_type_phi
:
4391 visit_phi(ctx
, nir_instr_as_phi(instr
));
4393 case nir_instr_type_ssa_undef
:
4394 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
4396 case nir_instr_type_jump
:
4397 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
4399 case nir_instr_type_deref
:
4400 visit_deref(ctx
, nir_instr_as_deref(instr
));
4403 fprintf(stderr
, "Unknown NIR instr type: ");
4404 nir_print_instr(instr
, stderr
);
4405 fprintf(stderr
, "\n");
4410 _mesa_hash_table_insert(ctx
->defs
, block
, llvm_block
);
4413 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
4415 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
4417 nir_block
*then_block
=
4418 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
4420 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
4422 visit_cf_list(ctx
, &if_stmt
->then_list
);
4424 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
4425 nir_block
*else_block
=
4426 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
4428 ac_build_else(&ctx
->ac
, else_block
->index
);
4429 visit_cf_list(ctx
, &if_stmt
->else_list
);
4432 ac_build_endif(&ctx
->ac
, then_block
->index
);
4435 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
4437 nir_block
*first_loop_block
=
4438 (nir_block
*) exec_list_get_head(&loop
->body
);
4440 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
4442 visit_cf_list(ctx
, &loop
->body
);
4444 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
4447 static void visit_cf_list(struct ac_nir_context
*ctx
,
4448 struct exec_list
*list
)
4450 foreach_list_typed(nir_cf_node
, node
, node
, list
)
4452 switch (node
->type
) {
4453 case nir_cf_node_block
:
4454 visit_block(ctx
, nir_cf_node_as_block(node
));
4457 case nir_cf_node_if
:
4458 visit_if(ctx
, nir_cf_node_as_if(node
));
4461 case nir_cf_node_loop
:
4462 visit_loop(ctx
, nir_cf_node_as_loop(node
));
4472 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
4473 struct ac_shader_abi
*abi
,
4474 struct nir_shader
*nir
,
4475 struct nir_variable
*variable
,
4476 gl_shader_stage stage
)
4478 unsigned output_loc
= variable
->data
.driver_location
/ 4;
4479 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4481 /* tess ctrl has it's own load/store paths for outputs */
4482 if (stage
== MESA_SHADER_TESS_CTRL
)
4485 if (stage
== MESA_SHADER_VERTEX
||
4486 stage
== MESA_SHADER_TESS_EVAL
||
4487 stage
== MESA_SHADER_GEOMETRY
) {
4488 int idx
= variable
->data
.location
+ variable
->data
.index
;
4489 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
4490 int length
= nir
->info
.clip_distance_array_size
+
4491 nir
->info
.cull_distance_array_size
;
4500 bool is_16bit
= glsl_type_is_16bit(glsl_without_array(variable
->type
));
4501 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
4502 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
4503 for (unsigned chan
= 0; chan
< 4; chan
++) {
4504 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
4505 ac_build_alloca_undef(ctx
, type
, "");
4511 setup_locals(struct ac_nir_context
*ctx
,
4512 struct nir_function
*func
)
4515 ctx
->num_locals
= 0;
4516 nir_foreach_variable(variable
, &func
->impl
->locals
) {
4517 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4518 variable
->data
.driver_location
= ctx
->num_locals
* 4;
4519 variable
->data
.location_frac
= 0;
4520 ctx
->num_locals
+= attrib_count
;
4522 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
4526 for (i
= 0; i
< ctx
->num_locals
; i
++) {
4527 for (j
= 0; j
< 4; j
++) {
4528 ctx
->locals
[i
* 4 + j
] =
4529 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
4535 setup_shared(struct ac_nir_context
*ctx
,
4536 struct nir_shader
*nir
)
4538 nir_foreach_variable(variable
, &nir
->shared
) {
4539 LLVMValueRef shared
=
4540 LLVMAddGlobalInAddressSpace(
4541 ctx
->ac
.module
, glsl_to_llvm_type(&ctx
->ac
, variable
->type
),
4542 variable
->name
? variable
->name
: "",
4544 _mesa_hash_table_insert(ctx
->vars
, variable
, shared
);
4548 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
4549 struct nir_shader
*nir
)
4551 struct ac_nir_context ctx
= {};
4552 struct nir_function
*func
;
4557 ctx
.stage
= nir
->info
.stage
;
4558 ctx
.info
= &nir
->info
;
4560 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
4562 nir_foreach_variable(variable
, &nir
->outputs
)
4563 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
4566 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4567 _mesa_key_pointer_equal
);
4568 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4569 _mesa_key_pointer_equal
);
4570 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4571 _mesa_key_pointer_equal
);
4573 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
4575 nir_index_ssa_defs(func
->impl
);
4576 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
4578 setup_locals(&ctx
, func
);
4580 if (gl_shader_stage_is_compute(nir
->info
.stage
))
4581 setup_shared(&ctx
, nir
);
4583 visit_cf_list(&ctx
, &func
->impl
->body
);
4584 phi_post_pass(&ctx
);
4586 if (!gl_shader_stage_is_compute(nir
->info
.stage
))
4587 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
4592 ralloc_free(ctx
.defs
);
4593 ralloc_free(ctx
.phis
);
4594 ralloc_free(ctx
.vars
);
4598 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
4600 /* While it would be nice not to have this flag, we are constrained
4601 * by the reality that LLVM 9.0 has buggy VGPR indexing on GFX9.
4603 bool llvm_has_working_vgpr_indexing
= chip_class
!= GFX9
;
4605 /* TODO: Indirect indexing of GS inputs is unimplemented.
4607 * TCS and TES load inputs directly from LDS or offchip memory, so
4608 * indirect indexing is trivial.
4610 nir_variable_mode indirect_mask
= 0;
4611 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
4612 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
4613 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
4614 !llvm_has_working_vgpr_indexing
)) {
4615 indirect_mask
|= nir_var_shader_in
;
4617 if (!llvm_has_working_vgpr_indexing
&&
4618 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
4619 indirect_mask
|= nir_var_shader_out
;
4621 /* TODO: We shouldn't need to do this, however LLVM isn't currently
4622 * smart enough to handle indirects without causing excess spilling
4623 * causing the gpu to hang.
4625 * See the following thread for more details of the problem:
4626 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
4628 indirect_mask
|= nir_var_function_temp
;
4630 nir_lower_indirect_derefs(nir
, indirect_mask
);
4634 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
4636 if (intrin
->intrinsic
!= nir_intrinsic_store_deref
)
4640 nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[0]));
4642 if (var
->data
.mode
!= nir_var_shader_out
)
4645 unsigned writemask
= 0;
4646 const int location
= var
->data
.location
;
4647 unsigned first_component
= var
->data
.location_frac
;
4648 unsigned num_comps
= intrin
->dest
.ssa
.num_components
;
4650 if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
4651 writemask
= ((1 << (num_comps
+ 1)) - 1) << first_component
;
4652 else if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
4653 writemask
= (((1 << (num_comps
+ 1)) - 1) << first_component
) << 4;
4659 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
4660 unsigned *cond_block_tf_writemask
,
4661 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
4663 switch (cf_node
->type
) {
4664 case nir_cf_node_block
: {
4665 nir_block
*block
= nir_cf_node_as_block(cf_node
);
4666 nir_foreach_instr(instr
, block
) {
4667 if (instr
->type
!= nir_instr_type_intrinsic
)
4670 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
4671 if (intrin
->intrinsic
== nir_intrinsic_barrier
) {
4673 /* If we find a barrier in nested control flow put this in the
4674 * too hard basket. In GLSL this is not possible but it is in
4678 *tessfactors_are_def_in_all_invocs
= false;
4682 /* The following case must be prevented:
4683 * gl_TessLevelInner = ...;
4685 * if (gl_InvocationID == 1)
4686 * gl_TessLevelInner = ...;
4688 * If you consider disjoint code segments separated by barriers, each
4689 * such segment that writes tess factor channels should write the same
4690 * channels in all codepaths within that segment.
4692 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
4693 /* Accumulate the result: */
4694 *tessfactors_are_def_in_all_invocs
&=
4695 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
4697 /* Analyze the next code segment from scratch. */
4698 *upper_block_tf_writemask
= 0;
4699 *cond_block_tf_writemask
= 0;
4702 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
4707 case nir_cf_node_if
: {
4708 unsigned then_tessfactor_writemask
= 0;
4709 unsigned else_tessfactor_writemask
= 0;
4711 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
4712 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
4713 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
4714 cond_block_tf_writemask
,
4715 tessfactors_are_def_in_all_invocs
, true);
4718 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
4719 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
4720 cond_block_tf_writemask
,
4721 tessfactors_are_def_in_all_invocs
, true);
4724 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
4725 /* If both statements write the same tess factor channels,
4726 * we can say that the upper block writes them too.
4728 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
4729 else_tessfactor_writemask
;
4730 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
4731 else_tessfactor_writemask
;
4736 case nir_cf_node_loop
: {
4737 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
4738 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
4739 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
4740 cond_block_tf_writemask
,
4741 tessfactors_are_def_in_all_invocs
, true);
4747 unreachable("unknown cf node type");
4752 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
4754 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
4756 /* The pass works as follows:
4757 * If all codepaths write tess factors, we can say that all
4758 * invocations define tess factors.
4760 * Each tess factor channel is tracked separately.
4762 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
4763 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
4765 /* Initial value = true. Here the pass will accumulate results from
4766 * multiple segments surrounded by barriers. If tess factors aren't
4767 * written at all, it's a shader bug and we don't care if this will be
4770 bool tessfactors_are_def_in_all_invocs
= true;
4772 nir_foreach_function(function
, nir
) {
4773 if (function
->impl
) {
4774 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
4775 scan_tess_ctrl(node
, &main_block_tf_writemask
,
4776 &cond_block_tf_writemask
,
4777 &tessfactors_are_def_in_all_invocs
,
4783 /* Accumulate the result for the last code segment separated by a
4786 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
4787 tessfactors_are_def_in_all_invocs
&=
4788 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
4791 return tessfactors_are_def_in_all_invocs
;