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
,
1523 bool may_store_unaligned
,
1524 bool writeonly_memory
)
1526 unsigned cache_policy
= 0;
1528 /* GFX6 has a TC L1 bug causing corruption of 8bit/16bit stores. All
1529 * store opcodes not aligned to a dword are affected. The only way to
1530 * get unaligned stores is through shader images.
1532 if (((may_store_unaligned
&& ctx
->ac
.chip_class
== GFX6
) ||
1533 /* If this is write-only, don't keep data in L1 to prevent
1534 * evicting L1 cache lines that may be needed by other
1538 access
& (ACCESS_COHERENT
| ACCESS_VOLATILE
))) {
1539 cache_policy
|= ac_glc
|
1540 (ctx
->ac
.chip_class
>= GFX10
&& load
? ac_dlc
: 0);
1543 return cache_policy
;
1546 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1547 nir_intrinsic_instr
*instr
)
1549 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1550 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1551 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1552 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1553 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
1554 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, false, writeonly_memory
);
1556 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1557 get_src(ctx
, instr
->src
[1]), true);
1558 LLVMValueRef base_data
= src_data
;
1559 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1560 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1564 LLVMValueRef data
, offset
;
1565 LLVMTypeRef data_type
;
1567 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1569 /* Due to an LLVM limitation with LLVM < 9, split 3-element
1570 * writes into a 2-element and a 1-element write. */
1572 (elem_size_bytes
!= 4 || !ac_has_vec3_support(ctx
->ac
.chip_class
, false))) {
1573 writemask
|= 1 << (start
+ 2);
1576 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1578 /* we can only store 4 DWords at the same time.
1579 * can only happen for 64 Bit vectors. */
1580 if (num_bytes
> 16) {
1581 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1586 /* check alignment of 16 Bit stores */
1587 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1588 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1592 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1594 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1595 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1597 if (num_bytes
== 1) {
1598 ac_build_tbuffer_store_byte(&ctx
->ac
, rsrc
, data
,
1599 offset
, ctx
->ac
.i32_0
,
1601 } else if (num_bytes
== 2) {
1602 ac_build_tbuffer_store_short(&ctx
->ac
, rsrc
, data
,
1603 offset
, ctx
->ac
.i32_0
,
1606 int num_channels
= num_bytes
/ 4;
1608 switch (num_bytes
) {
1609 case 16: /* v4f32 */
1610 data_type
= ctx
->ac
.v4f32
;
1612 case 12: /* v3f32 */
1613 data_type
= ctx
->ac
.v3f32
;
1616 data_type
= ctx
->ac
.v2f32
;
1619 data_type
= ctx
->ac
.f32
;
1622 unreachable("Malformed vector store.");
1624 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1626 ac_build_buffer_store_dword(&ctx
->ac
, rsrc
, data
,
1627 num_channels
, offset
,
1629 cache_policy
, false);
1634 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1635 const nir_intrinsic_instr
*instr
)
1637 LLVMTypeRef return_type
= LLVMTypeOf(get_src(ctx
, instr
->src
[2]));
1639 char name
[64], type
[8];
1640 LLVMValueRef params
[6];
1643 switch (instr
->intrinsic
) {
1644 case nir_intrinsic_ssbo_atomic_add
:
1647 case nir_intrinsic_ssbo_atomic_imin
:
1650 case nir_intrinsic_ssbo_atomic_umin
:
1653 case nir_intrinsic_ssbo_atomic_imax
:
1656 case nir_intrinsic_ssbo_atomic_umax
:
1659 case nir_intrinsic_ssbo_atomic_and
:
1662 case nir_intrinsic_ssbo_atomic_or
:
1665 case nir_intrinsic_ssbo_atomic_xor
:
1668 case nir_intrinsic_ssbo_atomic_exchange
:
1671 case nir_intrinsic_ssbo_atomic_comp_swap
:
1678 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1679 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1681 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1682 params
[arg_count
++] = ctx
->abi
->load_ssbo(ctx
->abi
,
1683 get_src(ctx
, instr
->src
[0]),
1686 if (HAVE_LLVM
>= 0x900) {
1687 /* XXX: The new raw/struct atomic intrinsics are buggy with
1688 * LLVM 8, see r358579.
1690 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1691 params
[arg_count
++] = ctx
->ac
.i32_0
; /* soffset */
1692 params
[arg_count
++] = ctx
->ac
.i32_0
; /* slc */
1694 ac_build_type_name_for_intr(return_type
, type
, sizeof(type
));
1695 snprintf(name
, sizeof(name
),
1696 "llvm.amdgcn.raw.buffer.atomic.%s.%s", op
, type
);
1698 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1699 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1700 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1702 assert(return_type
== ctx
->ac
.i32
);
1703 snprintf(name
, sizeof(name
),
1704 "llvm.amdgcn.buffer.atomic.%s", op
);
1707 return ac_build_intrinsic(&ctx
->ac
, name
, return_type
, params
,
1711 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
1712 const nir_intrinsic_instr
*instr
)
1714 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1715 int num_components
= instr
->num_components
;
1716 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1717 unsigned cache_policy
= get_cache_policy(ctx
, access
, true, false, false);
1719 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1720 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1721 get_src(ctx
, instr
->src
[0]), false);
1722 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
1724 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1725 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
1727 LLVMValueRef results
[4];
1728 for (int i
= 0; i
< num_components
;) {
1729 int num_elems
= num_components
- i
;
1730 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
1732 if (num_elems
* elem_size_bytes
> 16)
1733 num_elems
= 16 / elem_size_bytes
;
1734 int load_bytes
= num_elems
* elem_size_bytes
;
1736 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
1740 if (load_bytes
== 1) {
1741 ret
= ac_build_tbuffer_load_byte(&ctx
->ac
,
1747 } else if (load_bytes
== 2) {
1748 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
1755 int num_channels
= util_next_power_of_two(load_bytes
) / 4;
1756 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
1758 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_channels
,
1759 vindex
, offset
, immoffset
, 0,
1760 cache_policy
, can_speculate
, false);
1763 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
1764 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
1765 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
1767 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
1768 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
1770 for (unsigned j
= 0; j
< num_elems
; j
++) {
1771 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
1776 return ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1779 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
1780 const nir_intrinsic_instr
*instr
)
1783 LLVMValueRef rsrc
= get_src(ctx
, instr
->src
[0]);
1784 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1785 int num_components
= instr
->num_components
;
1787 if (ctx
->abi
->load_ubo
)
1788 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
1790 if (instr
->dest
.ssa
.bit_size
== 64)
1791 num_components
*= 2;
1793 if (instr
->dest
.ssa
.bit_size
== 16 || instr
->dest
.ssa
.bit_size
== 8) {
1794 unsigned load_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1795 LLVMValueRef results
[num_components
];
1796 for (unsigned i
= 0; i
< num_components
; ++i
) {
1797 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
,
1800 if (load_bytes
== 1) {
1801 results
[i
] = ac_build_tbuffer_load_byte(&ctx
->ac
,
1808 assert(load_bytes
== 2);
1809 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
1817 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1819 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
1820 NULL
, 0, 0, true, true);
1822 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
1825 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
1826 get_def_type(ctx
, &instr
->dest
.ssa
), "");
1830 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
1831 bool vs_in
, unsigned *vertex_index_out
,
1832 LLVMValueRef
*vertex_index_ref
,
1833 unsigned *const_out
, LLVMValueRef
*indir_out
)
1835 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
1836 nir_deref_path path
;
1837 unsigned idx_lvl
= 1;
1839 nir_deref_path_init(&path
, instr
, NULL
);
1841 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
1842 if (vertex_index_ref
) {
1843 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
1844 if (vertex_index_out
)
1845 *vertex_index_out
= 0;
1847 *vertex_index_out
= nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
1852 uint32_t const_offset
= 0;
1853 LLVMValueRef offset
= NULL
;
1855 if (var
->data
.compact
) {
1856 assert(instr
->deref_type
== nir_deref_type_array
);
1857 const_offset
= nir_src_as_uint(instr
->arr
.index
);
1861 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
1862 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
1863 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
1864 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
1866 for (unsigned i
= 0; i
< index
; i
++) {
1867 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
1868 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
1870 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
1871 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
1872 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
1873 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
1875 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
1879 unreachable("Uhandled deref type in get_deref_instr_offset");
1883 nir_deref_path_finish(&path
);
1885 if (const_offset
&& offset
)
1886 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
1887 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
1890 *const_out
= const_offset
;
1891 *indir_out
= offset
;
1894 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
1895 nir_intrinsic_instr
*instr
,
1898 LLVMValueRef result
;
1899 LLVMValueRef vertex_index
= NULL
;
1900 LLVMValueRef indir_index
= NULL
;
1901 unsigned const_index
= 0;
1903 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
1905 unsigned location
= var
->data
.location
;
1906 unsigned driver_location
= var
->data
.driver_location
;
1907 const bool is_patch
= var
->data
.patch
;
1908 const bool is_compact
= var
->data
.compact
;
1910 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
1911 false, NULL
, is_patch
? NULL
: &vertex_index
,
1912 &const_index
, &indir_index
);
1914 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1916 LLVMTypeRef src_component_type
;
1917 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
1918 src_component_type
= LLVMGetElementType(dest_type
);
1920 src_component_type
= dest_type
;
1922 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
1923 vertex_index
, indir_index
,
1924 const_index
, location
, driver_location
,
1925 var
->data
.location_frac
,
1926 instr
->num_components
,
1927 is_patch
, is_compact
, load_inputs
);
1928 if (instr
->dest
.ssa
.bit_size
== 16) {
1929 result
= ac_to_integer(&ctx
->ac
, result
);
1930 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
1932 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
1936 type_scalar_size_bytes(const struct glsl_type
*type
)
1938 assert(glsl_type_is_vector_or_scalar(type
) ||
1939 glsl_type_is_matrix(type
));
1940 return glsl_type_is_boolean(type
) ? 4 : glsl_get_bit_size(type
) / 8;
1943 static LLVMValueRef
visit_load_var(struct ac_nir_context
*ctx
,
1944 nir_intrinsic_instr
*instr
)
1946 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
1947 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
1949 LLVMValueRef values
[8];
1951 int ve
= instr
->dest
.ssa
.num_components
;
1953 LLVMValueRef indir_index
;
1955 unsigned const_index
;
1956 unsigned stride
= 4;
1957 int mode
= deref
->mode
;
1960 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
1961 var
->data
.mode
== nir_var_shader_in
;
1962 idx
= var
->data
.driver_location
;
1963 comp
= var
->data
.location_frac
;
1964 mode
= var
->data
.mode
;
1966 get_deref_offset(ctx
, deref
, vs_in
, NULL
, NULL
,
1967 &const_index
, &indir_index
);
1969 if (var
->data
.compact
) {
1971 const_index
+= comp
;
1976 if (instr
->dest
.ssa
.bit_size
== 64 &&
1977 (deref
->mode
== nir_var_shader_in
||
1978 deref
->mode
== nir_var_shader_out
||
1979 deref
->mode
== nir_var_function_temp
))
1983 case nir_var_shader_in
:
1984 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
1985 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
1986 return load_tess_varyings(ctx
, instr
, true);
1989 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
1990 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
1991 LLVMValueRef indir_index
;
1992 unsigned const_index
, vertex_index
;
1993 get_deref_offset(ctx
, deref
, false, &vertex_index
, NULL
,
1994 &const_index
, &indir_index
);
1996 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
1997 var
->data
.driver_location
,
1998 var
->data
.location_frac
,
1999 instr
->num_components
, vertex_index
, const_index
, type
);
2002 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2004 unsigned count
= glsl_count_attribute_slots(
2006 ctx
->stage
== MESA_SHADER_VERTEX
);
2008 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2009 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
2010 stride
, false, true);
2012 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2016 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
2019 case nir_var_function_temp
:
2020 for (unsigned chan
= 0; chan
< ve
; chan
++) {
2022 unsigned count
= glsl_count_attribute_slots(
2025 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2026 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2027 stride
, true, true);
2029 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2033 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
2037 case nir_var_mem_shared
: {
2038 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2039 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2040 return LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2041 get_def_type(ctx
, &instr
->dest
.ssa
),
2044 case nir_var_shader_out
:
2045 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2046 return load_tess_varyings(ctx
, instr
, false);
2049 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2051 unsigned count
= glsl_count_attribute_slots(
2054 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2055 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2056 stride
, true, true);
2058 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2062 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
2063 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
2068 case nir_var_mem_global
: {
2069 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2070 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2071 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2072 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2074 LLVMTypeRef result_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2075 if (stride
!= natural_stride
) {
2076 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(result_type
),
2077 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2078 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2080 for (unsigned i
= 0; i
< instr
->dest
.ssa
.num_components
; ++i
) {
2081 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, i
* stride
/ natural_stride
, 0);
2082 values
[i
] = LLVMBuildLoad(ctx
->ac
.builder
,
2083 ac_build_gep_ptr(&ctx
->ac
, address
, offset
), "");
2085 return ac_build_gather_values(&ctx
->ac
, values
, instr
->dest
.ssa
.num_components
);
2087 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2088 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2089 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2090 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2095 unreachable("unhandle variable mode");
2097 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
2098 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2102 visit_store_var(struct ac_nir_context
*ctx
,
2103 nir_intrinsic_instr
*instr
)
2105 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2106 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2108 LLVMValueRef temp_ptr
, value
;
2111 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
2112 int writemask
= instr
->const_index
[0];
2113 LLVMValueRef indir_index
;
2114 unsigned const_index
;
2117 get_deref_offset(ctx
, deref
, false,
2118 NULL
, NULL
, &const_index
, &indir_index
);
2119 idx
= var
->data
.driver_location
;
2120 comp
= var
->data
.location_frac
;
2122 if (var
->data
.compact
) {
2123 const_index
+= comp
;
2128 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64 &&
2129 (deref
->mode
== nir_var_shader_out
||
2130 deref
->mode
== nir_var_function_temp
)) {
2132 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2133 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2136 writemask
= widen_mask(writemask
, 2);
2139 writemask
= writemask
<< comp
;
2141 switch (deref
->mode
) {
2142 case nir_var_shader_out
:
2144 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2145 LLVMValueRef vertex_index
= NULL
;
2146 LLVMValueRef indir_index
= NULL
;
2147 unsigned const_index
= 0;
2148 const bool is_patch
= var
->data
.patch
;
2150 get_deref_offset(ctx
, deref
, false, NULL
,
2151 is_patch
? NULL
: &vertex_index
,
2152 &const_index
, &indir_index
);
2154 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2155 vertex_index
, indir_index
,
2156 const_index
, src
, writemask
);
2160 for (unsigned chan
= 0; chan
< 8; chan
++) {
2162 if (!(writemask
& (1 << chan
)))
2165 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2167 if (var
->data
.compact
)
2170 unsigned count
= glsl_count_attribute_slots(
2173 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2174 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2175 stride
, true, true);
2177 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2178 value
, indir_index
, "");
2179 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2180 count
, stride
, tmp_vec
);
2183 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2185 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2189 case nir_var_function_temp
:
2190 for (unsigned chan
= 0; chan
< 8; chan
++) {
2191 if (!(writemask
& (1 << chan
)))
2194 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2196 unsigned count
= glsl_count_attribute_slots(
2199 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2200 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2203 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2204 value
, indir_index
, "");
2205 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2208 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2210 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2215 case nir_var_mem_global
:
2216 case nir_var_mem_shared
: {
2217 int writemask
= instr
->const_index
[0];
2218 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2219 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2221 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2222 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2223 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2225 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2226 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2227 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2229 if (writemask
== (1u << ac_get_llvm_num_components(val
)) - 1 &&
2230 stride
== natural_stride
) {
2231 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2232 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2233 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2235 val
= LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2236 LLVMGetElementType(LLVMTypeOf(address
)), "");
2237 LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2239 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(LLVMTypeOf(val
)),
2240 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2241 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2242 for (unsigned chan
= 0; chan
< 4; chan
++) {
2243 if (!(writemask
& (1 << chan
)))
2246 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, chan
* stride
/ natural_stride
, 0);
2248 LLVMValueRef ptr
= ac_build_gep_ptr(&ctx
->ac
, address
, offset
);
2249 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2251 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2252 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2253 LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2264 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2267 case GLSL_SAMPLER_DIM_BUF
:
2269 case GLSL_SAMPLER_DIM_1D
:
2270 return array
? 2 : 1;
2271 case GLSL_SAMPLER_DIM_2D
:
2272 return array
? 3 : 2;
2273 case GLSL_SAMPLER_DIM_MS
:
2274 return array
? 4 : 3;
2275 case GLSL_SAMPLER_DIM_3D
:
2276 case GLSL_SAMPLER_DIM_CUBE
:
2278 case GLSL_SAMPLER_DIM_RECT
:
2279 case GLSL_SAMPLER_DIM_SUBPASS
:
2281 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2289 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2290 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2291 LLVMValueRef coord_z
,
2292 LLVMValueRef sample_index
,
2293 LLVMValueRef fmask_desc_ptr
)
2295 unsigned sample_chan
= coord_z
? 3 : 2;
2296 LLVMValueRef addr
[4] = {coord_x
, coord_y
, coord_z
};
2297 addr
[sample_chan
] = sample_index
;
2299 ac_apply_fmask_to_sample(ctx
, fmask_desc_ptr
, addr
, coord_z
!= NULL
);
2300 return addr
[sample_chan
];
2303 static nir_deref_instr
*get_image_deref(const nir_intrinsic_instr
*instr
)
2305 assert(instr
->src
[0].is_ssa
);
2306 return nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2309 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2310 const nir_intrinsic_instr
*instr
,
2311 enum ac_descriptor_type desc_type
,
2314 nir_deref_instr
*deref_instr
=
2315 instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
?
2316 nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
) : NULL
;
2318 return get_sampler_desc(ctx
, deref_instr
, desc_type
, &instr
->instr
, true, write
);
2321 static void get_image_coords(struct ac_nir_context
*ctx
,
2322 const nir_intrinsic_instr
*instr
,
2323 struct ac_image_args
*args
,
2324 enum glsl_sampler_dim dim
,
2327 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2328 LLVMValueRef masks
[] = {
2329 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2330 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2332 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2335 bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2336 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2337 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2338 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2339 bool gfx9_1d
= ctx
->ac
.chip_class
>= GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2340 count
= image_type_to_components_count(dim
, is_array
);
2342 if (is_ms
&& (instr
->intrinsic
== nir_intrinsic_image_deref_load
||
2343 instr
->intrinsic
== nir_intrinsic_bindless_image_load
)) {
2344 LLVMValueRef fmask_load_address
[3];
2347 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2348 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2350 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2352 fmask_load_address
[2] = NULL
;
2354 for (chan
= 0; chan
< 2; ++chan
)
2355 fmask_load_address
[chan
] =
2356 LLVMBuildAdd(ctx
->ac
.builder
, fmask_load_address
[chan
],
2357 LLVMBuildFPToUI(ctx
->ac
.builder
, ctx
->abi
->frag_pos
[chan
],
2358 ctx
->ac
.i32
, ""), "");
2359 fmask_load_address
[2] = ac_to_integer(&ctx
->ac
, ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)]);
2361 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2362 fmask_load_address
[0],
2363 fmask_load_address
[1],
2364 fmask_load_address
[2],
2366 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2367 AC_DESC_FMASK
, &instr
->instr
, false, false));
2369 if (count
== 1 && !gfx9_1d
) {
2370 if (instr
->src
[1].ssa
->num_components
)
2371 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2373 args
->coords
[0] = src0
;
2378 for (chan
= 0; chan
< count
; ++chan
) {
2379 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2382 for (chan
= 0; chan
< 2; ++chan
) {
2383 args
->coords
[chan
] = LLVMBuildAdd(
2384 ctx
->ac
.builder
, args
->coords
[chan
],
2386 ctx
->ac
.builder
, ctx
->abi
->frag_pos
[chan
],
2387 ctx
->ac
.i32
, ""), "");
2389 args
->coords
[2] = ac_to_integer(&ctx
->ac
,
2390 ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)]);
2396 args
->coords
[2] = args
->coords
[1];
2397 args
->coords
[1] = ctx
->ac
.i32_0
;
2399 args
->coords
[1] = ctx
->ac
.i32_0
;
2404 args
->coords
[count
] = sample_index
;
2410 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2411 const nir_intrinsic_instr
*instr
,
2412 bool write
, bool atomic
)
2414 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, write
);
2415 if (ctx
->abi
->gfx9_stride_size_workaround
||
2416 (ctx
->abi
->gfx9_stride_size_workaround_for_atomic
&& atomic
)) {
2417 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2418 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2419 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2421 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2422 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2423 elem_count
, stride
, "");
2425 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2426 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2431 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2432 const nir_intrinsic_instr
*instr
,
2437 enum glsl_sampler_dim dim
;
2438 enum gl_access_qualifier access
;
2441 dim
= nir_intrinsic_image_dim(instr
);
2442 access
= nir_intrinsic_access(instr
);
2443 is_array
= nir_intrinsic_image_array(instr
);
2445 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2446 const struct glsl_type
*type
= image_deref
->type
;
2447 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2448 dim
= glsl_get_sampler_dim(type
);
2449 access
= var
->data
.image
.access
;
2450 is_array
= glsl_sampler_type_is_array(type
);
2453 struct ac_image_args args
= {};
2455 args
.cache_policy
= get_cache_policy(ctx
, access
, true, false, false);
2457 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2458 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2459 unsigned num_channels
= util_last_bit(mask
);
2460 LLVMValueRef rsrc
, vindex
;
2462 rsrc
= get_image_buffer_descriptor(ctx
, instr
, false, false);
2463 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2466 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2467 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2468 ctx
->ac
.i32_0
, num_channels
,
2471 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2473 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2474 res
= ac_to_integer(&ctx
->ac
, res
);
2476 args
.opcode
= ac_image_load
;
2477 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2478 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2479 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2481 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2483 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2488 static void visit_image_store(struct ac_nir_context
*ctx
,
2489 nir_intrinsic_instr
*instr
,
2494 enum glsl_sampler_dim dim
;
2495 enum gl_access_qualifier access
;
2498 dim
= nir_intrinsic_image_dim(instr
);
2499 access
= nir_intrinsic_access(instr
);
2500 is_array
= nir_intrinsic_image_array(instr
);
2502 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2503 const struct glsl_type
*type
= image_deref
->type
;
2504 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2505 dim
= glsl_get_sampler_dim(type
);
2506 access
= var
->data
.image
.access
;
2507 is_array
= glsl_sampler_type_is_array(type
);
2510 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
2511 struct ac_image_args args
= {};
2513 args
.cache_policy
= get_cache_policy(ctx
, access
, false, true, writeonly_memory
);
2515 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2516 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, true, false);
2517 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2518 unsigned src_channels
= ac_get_llvm_num_components(src
);
2519 LLVMValueRef vindex
;
2521 if (src_channels
== 3)
2522 src
= ac_build_expand_to_vec4(&ctx
->ac
, src
, 3);
2524 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2525 get_src(ctx
, instr
->src
[1]),
2528 ac_build_buffer_store_format(&ctx
->ac
, rsrc
, src
, vindex
,
2529 ctx
->ac
.i32_0
, src_channels
,
2532 args
.opcode
= ac_image_store
;
2533 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2534 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2535 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2536 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2539 ac_build_image_opcode(&ctx
->ac
, &args
);
2544 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2545 const nir_intrinsic_instr
*instr
,
2548 LLVMValueRef params
[7];
2549 int param_count
= 0;
2551 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
||
2552 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_comp_swap
;
2553 const char *atomic_name
;
2554 char intrinsic_name
[64];
2555 enum ac_atomic_op atomic_subop
;
2556 MAYBE_UNUSED
int length
;
2558 enum glsl_sampler_dim dim
;
2559 bool is_unsigned
= false;
2562 if (instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_min
||
2563 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_max
) {
2564 const GLenum format
= nir_intrinsic_format(instr
);
2565 assert(format
== GL_R32UI
|| format
== GL_R32I
);
2566 is_unsigned
= format
== GL_R32UI
;
2568 dim
= nir_intrinsic_image_dim(instr
);
2569 is_array
= nir_intrinsic_image_array(instr
);
2571 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2572 is_unsigned
= glsl_get_sampler_result_type(type
) == GLSL_TYPE_UINT
;
2573 dim
= glsl_get_sampler_dim(type
);
2574 is_array
= glsl_sampler_type_is_array(type
);
2577 switch (instr
->intrinsic
) {
2578 case nir_intrinsic_bindless_image_atomic_add
:
2579 case nir_intrinsic_image_deref_atomic_add
:
2580 atomic_name
= "add";
2581 atomic_subop
= ac_atomic_add
;
2583 case nir_intrinsic_bindless_image_atomic_min
:
2584 case nir_intrinsic_image_deref_atomic_min
:
2585 atomic_name
= is_unsigned
? "umin" : "smin";
2586 atomic_subop
= is_unsigned
? ac_atomic_umin
: ac_atomic_smin
;
2588 case nir_intrinsic_bindless_image_atomic_max
:
2589 case nir_intrinsic_image_deref_atomic_max
:
2590 atomic_name
= is_unsigned
? "umax" : "smax";
2591 atomic_subop
= is_unsigned
? ac_atomic_umax
: ac_atomic_smax
;
2593 case nir_intrinsic_bindless_image_atomic_and
:
2594 case nir_intrinsic_image_deref_atomic_and
:
2595 atomic_name
= "and";
2596 atomic_subop
= ac_atomic_and
;
2598 case nir_intrinsic_bindless_image_atomic_or
:
2599 case nir_intrinsic_image_deref_atomic_or
:
2601 atomic_subop
= ac_atomic_or
;
2603 case nir_intrinsic_bindless_image_atomic_xor
:
2604 case nir_intrinsic_image_deref_atomic_xor
:
2605 atomic_name
= "xor";
2606 atomic_subop
= ac_atomic_xor
;
2608 case nir_intrinsic_bindless_image_atomic_exchange
:
2609 case nir_intrinsic_image_deref_atomic_exchange
:
2610 atomic_name
= "swap";
2611 atomic_subop
= ac_atomic_swap
;
2613 case nir_intrinsic_bindless_image_atomic_comp_swap
:
2614 case nir_intrinsic_image_deref_atomic_comp_swap
:
2615 atomic_name
= "cmpswap";
2616 atomic_subop
= 0; /* not used */
2623 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
2624 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
2626 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2627 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, true, true);
2628 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2629 ctx
->ac
.i32_0
, ""); /* vindex */
2630 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
2631 if (HAVE_LLVM
>= 0x900) {
2632 /* XXX: The new raw/struct atomic intrinsics are buggy
2633 * with LLVM 8, see r358579.
2635 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
2636 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
2638 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2639 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
2641 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
2643 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2644 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
2647 assert(length
< sizeof(intrinsic_name
));
2648 return ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
2649 params
, param_count
, 0);
2651 struct ac_image_args args
= {};
2652 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
2653 args
.atomic
= atomic_subop
;
2654 args
.data
[0] = params
[0];
2656 args
.data
[1] = params
[1];
2657 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2658 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2659 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2661 return ac_build_image_opcode(&ctx
->ac
, &args
);
2665 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
2666 const nir_intrinsic_instr
*instr
,
2669 enum glsl_sampler_dim dim
;
2672 dim
= nir_intrinsic_image_dim(instr
);
2673 is_array
= nir_intrinsic_image_array(instr
);
2675 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2676 dim
= glsl_get_sampler_dim(type
);
2677 is_array
= glsl_sampler_type_is_array(type
);
2680 struct ac_image_args args
= { 0 };
2681 args
.dim
= get_ac_sampler_dim(&ctx
->ac
, dim
, is_array
);
2683 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2684 args
.opcode
= ac_image_get_resinfo
;
2685 args
.lod
= ctx
->ac
.i32_0
;
2686 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2688 return ac_build_image_opcode(&ctx
->ac
, &args
);
2691 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
2692 const nir_intrinsic_instr
*instr
,
2697 enum glsl_sampler_dim dim
;
2700 dim
= nir_intrinsic_image_dim(instr
);
2701 is_array
= nir_intrinsic_image_array(instr
);
2703 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2704 dim
= glsl_get_sampler_dim(type
);
2705 is_array
= glsl_sampler_type_is_array(type
);
2708 if (dim
== GLSL_SAMPLER_DIM_BUF
)
2709 return get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, false), true);
2711 struct ac_image_args args
= { 0 };
2713 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2715 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2716 args
.opcode
= ac_image_get_resinfo
;
2717 args
.lod
= ctx
->ac
.i32_0
;
2718 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2720 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2722 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
2724 if (dim
== GLSL_SAMPLER_DIM_CUBE
&& is_array
) {
2725 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
2726 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2727 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
2728 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
2730 if (ctx
->ac
.chip_class
>= GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
&& is_array
) {
2731 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2732 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
2739 static void emit_membar(struct ac_llvm_context
*ac
,
2740 const nir_intrinsic_instr
*instr
)
2742 unsigned wait_flags
= 0;
2744 switch (instr
->intrinsic
) {
2745 case nir_intrinsic_memory_barrier
:
2746 case nir_intrinsic_group_memory_barrier
:
2747 wait_flags
= AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
2749 case nir_intrinsic_memory_barrier_atomic_counter
:
2750 case nir_intrinsic_memory_barrier_buffer
:
2751 case nir_intrinsic_memory_barrier_image
:
2752 wait_flags
= AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
2754 case nir_intrinsic_memory_barrier_shared
:
2755 wait_flags
= AC_WAIT_LGKM
;
2761 ac_build_waitcnt(ac
, wait_flags
);
2764 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
2766 /* GFX6 only (thanks to a hw bug workaround):
2767 * The real barrier instruction isn’t needed, because an entire patch
2768 * always fits into a single wave.
2770 if (ac
->chip_class
== GFX6
&& stage
== MESA_SHADER_TESS_CTRL
) {
2771 ac_build_waitcnt(ac
, AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
);
2774 ac_build_s_barrier(ac
);
2777 static void emit_discard(struct ac_nir_context
*ctx
,
2778 const nir_intrinsic_instr
*instr
)
2782 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
2783 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2784 get_src(ctx
, instr
->src
[0]),
2787 assert(instr
->intrinsic
== nir_intrinsic_discard
);
2788 cond
= ctx
->ac
.i1false
;
2791 ctx
->abi
->emit_kill(ctx
->abi
, cond
);
2795 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
2797 LLVMValueRef result
;
2798 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
2799 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2800 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2802 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
2806 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
2808 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2809 LLVMValueRef result
;
2810 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2811 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2812 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
2814 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
2819 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
2821 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2822 return LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2823 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
2825 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
2830 visit_first_invocation(struct ac_nir_context
*ctx
)
2832 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
2834 /* The second argument is whether cttz(0) should be defined, but we do not care. */
2835 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
2836 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
,
2838 ctx
->ac
.i64
, args
, 2,
2839 AC_FUNC_ATTR_NOUNWIND
|
2840 AC_FUNC_ATTR_READNONE
);
2842 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
2846 visit_load_shared(struct ac_nir_context
*ctx
,
2847 const nir_intrinsic_instr
*instr
)
2849 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
2851 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
2853 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
2854 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2855 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
2856 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
2859 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
2860 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2864 visit_store_shared(struct ac_nir_context
*ctx
,
2865 const nir_intrinsic_instr
*instr
)
2867 LLVMValueRef derived_ptr
, data
,index
;
2868 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2870 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1]);
2871 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
2873 int writemask
= nir_intrinsic_write_mask(instr
);
2874 for (int chan
= 0; chan
< 4; chan
++) {
2875 if (!(writemask
& (1 << chan
))) {
2878 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2879 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2880 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
2881 LLVMBuildStore(builder
, data
, derived_ptr
);
2885 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
2886 const nir_intrinsic_instr
*instr
,
2887 LLVMValueRef ptr
, int src_idx
)
2889 LLVMValueRef result
;
2890 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
2892 const char *sync_scope
= HAVE_LLVM
>= 0x0900 ? "workgroup-one-as" : "workgroup";
2894 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
2895 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
2896 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
2897 result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, src
, src1
, sync_scope
);
2898 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
2900 LLVMAtomicRMWBinOp op
;
2901 switch (instr
->intrinsic
) {
2902 case nir_intrinsic_shared_atomic_add
:
2903 case nir_intrinsic_deref_atomic_add
:
2904 op
= LLVMAtomicRMWBinOpAdd
;
2906 case nir_intrinsic_shared_atomic_umin
:
2907 case nir_intrinsic_deref_atomic_umin
:
2908 op
= LLVMAtomicRMWBinOpUMin
;
2910 case nir_intrinsic_shared_atomic_umax
:
2911 case nir_intrinsic_deref_atomic_umax
:
2912 op
= LLVMAtomicRMWBinOpUMax
;
2914 case nir_intrinsic_shared_atomic_imin
:
2915 case nir_intrinsic_deref_atomic_imin
:
2916 op
= LLVMAtomicRMWBinOpMin
;
2918 case nir_intrinsic_shared_atomic_imax
:
2919 case nir_intrinsic_deref_atomic_imax
:
2920 op
= LLVMAtomicRMWBinOpMax
;
2922 case nir_intrinsic_shared_atomic_and
:
2923 case nir_intrinsic_deref_atomic_and
:
2924 op
= LLVMAtomicRMWBinOpAnd
;
2926 case nir_intrinsic_shared_atomic_or
:
2927 case nir_intrinsic_deref_atomic_or
:
2928 op
= LLVMAtomicRMWBinOpOr
;
2930 case nir_intrinsic_shared_atomic_xor
:
2931 case nir_intrinsic_deref_atomic_xor
:
2932 op
= LLVMAtomicRMWBinOpXor
;
2934 case nir_intrinsic_shared_atomic_exchange
:
2935 case nir_intrinsic_deref_atomic_exchange
:
2936 op
= LLVMAtomicRMWBinOpXchg
;
2942 result
= ac_build_atomic_rmw(&ctx
->ac
, op
, ptr
, ac_to_integer(&ctx
->ac
, src
), sync_scope
);
2947 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
2949 LLVMValueRef values
[2];
2950 LLVMValueRef pos
[2];
2952 pos
[0] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[0]);
2953 pos
[1] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[1]);
2955 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
2956 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
2957 return ac_build_gather_values(&ctx
->ac
, values
, 2);
2960 static LLVMValueRef
visit_interp(struct ac_nir_context
*ctx
,
2961 const nir_intrinsic_instr
*instr
)
2963 LLVMValueRef result
[4];
2964 LLVMValueRef interp_param
;
2967 LLVMValueRef src_c0
= NULL
;
2968 LLVMValueRef src_c1
= NULL
;
2969 LLVMValueRef src0
= NULL
;
2971 nir_deref_instr
*deref_instr
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2972 nir_variable
*var
= nir_deref_instr_get_variable(deref_instr
);
2973 int input_base
= ctx
->abi
->fs_input_attr_indices
[var
->data
.location
- VARYING_SLOT_VAR0
];
2974 switch (instr
->intrinsic
) {
2975 case nir_intrinsic_interp_deref_at_centroid
:
2976 location
= INTERP_CENTROID
;
2978 case nir_intrinsic_interp_deref_at_sample
:
2979 case nir_intrinsic_interp_deref_at_offset
:
2980 location
= INTERP_CENTER
;
2981 src0
= get_src(ctx
, instr
->src
[1]);
2987 if (instr
->intrinsic
== nir_intrinsic_interp_deref_at_offset
) {
2988 src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, ctx
->ac
.i32_0
, ""));
2989 src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, ctx
->ac
.i32_1
, ""));
2990 } else if (instr
->intrinsic
== nir_intrinsic_interp_deref_at_sample
) {
2991 LLVMValueRef sample_position
;
2992 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
2994 /* fetch sample ID */
2995 sample_position
= ctx
->abi
->load_sample_position(ctx
->abi
, src0
);
2997 src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
, ctx
->ac
.i32_0
, "");
2998 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
2999 src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
, ctx
->ac
.i32_1
, "");
3000 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
3002 interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, var
->data
.interpolation
, location
);
3004 if (location
== INTERP_CENTER
) {
3005 LLVMValueRef ij_out
[2];
3006 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
3009 * take the I then J parameters, and the DDX/Y for it, and
3010 * calculate the IJ inputs for the interpolator.
3011 * temp1 = ddx * offset/sample.x + I;
3012 * interp_param.I = ddy * offset/sample.y + temp1;
3013 * temp1 = ddx * offset/sample.x + J;
3014 * interp_param.J = ddy * offset/sample.y + temp1;
3016 for (unsigned i
= 0; i
< 2; i
++) {
3017 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
3018 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
3019 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3020 ddxy_out
, ix_ll
, "");
3021 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3022 ddxy_out
, iy_ll
, "");
3023 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3024 interp_param
, ix_ll
, "");
3025 LLVMValueRef temp1
, temp2
;
3027 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
3030 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
3031 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
3033 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
3034 temp2
, ctx
->ac
.i32
, "");
3036 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
3040 LLVMValueRef attrib_idx
= ctx
->ac
.i32_0
;
3041 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3042 if (deref_instr
->deref_type
== nir_deref_type_array
) {
3043 unsigned array_size
= glsl_count_attribute_slots(deref_instr
->type
, false);
3045 LLVMValueRef offset
;
3046 if (nir_src_is_const(deref_instr
->arr
.index
)) {
3047 offset
= LLVMConstInt(ctx
->ac
.i32
, array_size
* nir_src_as_uint(deref_instr
->arr
.index
), false);
3049 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3051 offset
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3052 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
3055 attrib_idx
= LLVMBuildAdd(ctx
->ac
.builder
, attrib_idx
, offset
, "");
3056 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3057 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
3058 LLVMValueRef offset
;
3059 unsigned sidx
= deref_instr
->strct
.index
;
3060 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3061 offset
= LLVMConstInt(ctx
->ac
.i32
, glsl_get_struct_location_offset(deref_instr
->type
, sidx
), false);
3062 attrib_idx
= LLVMBuildAdd(ctx
->ac
.builder
, attrib_idx
, offset
, "");
3064 unreachable("Unsupported deref type");
3069 unsigned attrib_size
= glsl_count_attribute_slots(var
->type
, false);
3070 for (chan
= 0; chan
< 4; chan
++) {
3071 LLVMValueRef gather
= LLVMGetUndef(LLVMVectorType(ctx
->ac
.f32
, attrib_size
));
3072 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, chan
, false);
3074 for (unsigned idx
= 0; idx
< attrib_size
; ++idx
) {
3075 LLVMValueRef v
, attr_number
;
3077 attr_number
= LLVMConstInt(ctx
->ac
.i32
, input_base
+ idx
, false);
3079 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
,
3080 interp_param
, ctx
->ac
.v2f32
, "");
3081 LLVMValueRef i
= LLVMBuildExtractElement(
3082 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_0
, "");
3083 LLVMValueRef j
= LLVMBuildExtractElement(
3084 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_1
, "");
3086 v
= ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3087 ctx
->abi
->prim_mask
, i
, j
);
3089 v
= ac_build_fs_interp_mov(&ctx
->ac
, LLVMConstInt(ctx
->ac
.i32
, 2, false),
3090 llvm_chan
, attr_number
, ctx
->abi
->prim_mask
);
3093 gather
= LLVMBuildInsertElement(ctx
->ac
.builder
, gather
, v
,
3094 LLVMConstInt(ctx
->ac
.i32
, idx
, false), "");
3097 result
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
, gather
, attrib_idx
, "");
3100 return ac_build_varying_gather_values(&ctx
->ac
, result
, instr
->num_components
,
3101 var
->data
.location_frac
);
3104 static void visit_intrinsic(struct ac_nir_context
*ctx
,
3105 nir_intrinsic_instr
*instr
)
3107 LLVMValueRef result
= NULL
;
3109 switch (instr
->intrinsic
) {
3110 case nir_intrinsic_ballot
:
3111 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3113 case nir_intrinsic_read_invocation
:
3114 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3115 get_src(ctx
, instr
->src
[1]));
3117 case nir_intrinsic_read_first_invocation
:
3118 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
3120 case nir_intrinsic_load_subgroup_invocation
:
3121 result
= ac_get_thread_id(&ctx
->ac
);
3123 case nir_intrinsic_load_work_group_id
: {
3124 LLVMValueRef values
[3];
3126 for (int i
= 0; i
< 3; i
++) {
3127 values
[i
] = ctx
->abi
->workgroup_ids
[i
] ?
3128 ctx
->abi
->workgroup_ids
[i
] : ctx
->ac
.i32_0
;
3131 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
3134 case nir_intrinsic_load_base_vertex
:
3135 case nir_intrinsic_load_first_vertex
:
3136 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
3138 case nir_intrinsic_load_local_group_size
:
3139 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
3141 case nir_intrinsic_load_vertex_id
:
3142 result
= LLVMBuildAdd(ctx
->ac
.builder
, ctx
->abi
->vertex_id
,
3143 ctx
->abi
->base_vertex
, "");
3145 case nir_intrinsic_load_vertex_id_zero_base
: {
3146 result
= ctx
->abi
->vertex_id
;
3149 case nir_intrinsic_load_local_invocation_id
: {
3150 result
= ctx
->abi
->local_invocation_ids
;
3153 case nir_intrinsic_load_base_instance
:
3154 result
= ctx
->abi
->start_instance
;
3156 case nir_intrinsic_load_draw_id
:
3157 result
= ctx
->abi
->draw_id
;
3159 case nir_intrinsic_load_view_index
:
3160 result
= ctx
->abi
->view_index
;
3162 case nir_intrinsic_load_invocation_id
:
3163 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
)
3164 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->tcs_rel_ids
, 8, 5);
3166 result
= ctx
->abi
->gs_invocation_id
;
3168 case nir_intrinsic_load_primitive_id
:
3169 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3170 result
= ctx
->abi
->gs_prim_id
;
3171 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3172 result
= ctx
->abi
->tcs_patch_id
;
3173 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3174 result
= ctx
->abi
->tes_patch_id
;
3176 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3178 case nir_intrinsic_load_sample_id
:
3179 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->ancillary
, 8, 4);
3181 case nir_intrinsic_load_sample_pos
:
3182 result
= load_sample_pos(ctx
);
3184 case nir_intrinsic_load_sample_mask_in
:
3185 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3187 case nir_intrinsic_load_frag_coord
: {
3188 LLVMValueRef values
[4] = {
3189 ctx
->abi
->frag_pos
[0],
3190 ctx
->abi
->frag_pos
[1],
3191 ctx
->abi
->frag_pos
[2],
3192 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
, ctx
->abi
->frag_pos
[3])
3194 result
= ac_to_integer(&ctx
->ac
,
3195 ac_build_gather_values(&ctx
->ac
, values
, 4));
3198 case nir_intrinsic_load_front_face
:
3199 result
= ctx
->abi
->front_face
;
3201 case nir_intrinsic_load_helper_invocation
:
3202 result
= ac_build_load_helper_invocation(&ctx
->ac
);
3204 case nir_intrinsic_load_instance_id
:
3205 result
= ctx
->abi
->instance_id
;
3207 case nir_intrinsic_load_num_work_groups
:
3208 result
= ctx
->abi
->num_work_groups
;
3210 case nir_intrinsic_load_local_invocation_index
:
3211 result
= visit_load_local_invocation_index(ctx
);
3213 case nir_intrinsic_load_subgroup_id
:
3214 result
= visit_load_subgroup_id(ctx
);
3216 case nir_intrinsic_load_num_subgroups
:
3217 result
= visit_load_num_subgroups(ctx
);
3219 case nir_intrinsic_first_invocation
:
3220 result
= visit_first_invocation(ctx
);
3222 case nir_intrinsic_load_push_constant
:
3223 result
= visit_load_push_constant(ctx
, instr
);
3225 case nir_intrinsic_vulkan_resource_index
: {
3226 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3227 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3228 unsigned binding
= nir_intrinsic_binding(instr
);
3230 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3234 case nir_intrinsic_vulkan_resource_reindex
:
3235 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3237 case nir_intrinsic_store_ssbo
:
3238 visit_store_ssbo(ctx
, instr
);
3240 case nir_intrinsic_load_ssbo
:
3241 result
= visit_load_buffer(ctx
, instr
);
3243 case nir_intrinsic_ssbo_atomic_add
:
3244 case nir_intrinsic_ssbo_atomic_imin
:
3245 case nir_intrinsic_ssbo_atomic_umin
:
3246 case nir_intrinsic_ssbo_atomic_imax
:
3247 case nir_intrinsic_ssbo_atomic_umax
:
3248 case nir_intrinsic_ssbo_atomic_and
:
3249 case nir_intrinsic_ssbo_atomic_or
:
3250 case nir_intrinsic_ssbo_atomic_xor
:
3251 case nir_intrinsic_ssbo_atomic_exchange
:
3252 case nir_intrinsic_ssbo_atomic_comp_swap
:
3253 result
= visit_atomic_ssbo(ctx
, instr
);
3255 case nir_intrinsic_load_ubo
:
3256 result
= visit_load_ubo_buffer(ctx
, instr
);
3258 case nir_intrinsic_get_buffer_size
:
3259 result
= visit_get_buffer_size(ctx
, instr
);
3261 case nir_intrinsic_load_deref
:
3262 result
= visit_load_var(ctx
, instr
);
3264 case nir_intrinsic_store_deref
:
3265 visit_store_var(ctx
, instr
);
3267 case nir_intrinsic_load_shared
:
3268 result
= visit_load_shared(ctx
, instr
);
3270 case nir_intrinsic_store_shared
:
3271 visit_store_shared(ctx
, instr
);
3273 case nir_intrinsic_bindless_image_samples
:
3274 result
= visit_image_samples(ctx
, instr
, true);
3276 case nir_intrinsic_image_deref_samples
:
3277 result
= visit_image_samples(ctx
, instr
, false);
3279 case nir_intrinsic_bindless_image_load
:
3280 result
= visit_image_load(ctx
, instr
, true);
3282 case nir_intrinsic_image_deref_load
:
3283 result
= visit_image_load(ctx
, instr
, false);
3285 case nir_intrinsic_bindless_image_store
:
3286 visit_image_store(ctx
, instr
, true);
3288 case nir_intrinsic_image_deref_store
:
3289 visit_image_store(ctx
, instr
, false);
3291 case nir_intrinsic_bindless_image_atomic_add
:
3292 case nir_intrinsic_bindless_image_atomic_min
:
3293 case nir_intrinsic_bindless_image_atomic_max
:
3294 case nir_intrinsic_bindless_image_atomic_and
:
3295 case nir_intrinsic_bindless_image_atomic_or
:
3296 case nir_intrinsic_bindless_image_atomic_xor
:
3297 case nir_intrinsic_bindless_image_atomic_exchange
:
3298 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3299 result
= visit_image_atomic(ctx
, instr
, true);
3301 case nir_intrinsic_image_deref_atomic_add
:
3302 case nir_intrinsic_image_deref_atomic_min
:
3303 case nir_intrinsic_image_deref_atomic_max
:
3304 case nir_intrinsic_image_deref_atomic_and
:
3305 case nir_intrinsic_image_deref_atomic_or
:
3306 case nir_intrinsic_image_deref_atomic_xor
:
3307 case nir_intrinsic_image_deref_atomic_exchange
:
3308 case nir_intrinsic_image_deref_atomic_comp_swap
:
3309 result
= visit_image_atomic(ctx
, instr
, false);
3311 case nir_intrinsic_bindless_image_size
:
3312 result
= visit_image_size(ctx
, instr
, true);
3314 case nir_intrinsic_image_deref_size
:
3315 result
= visit_image_size(ctx
, instr
, false);
3317 case nir_intrinsic_shader_clock
:
3318 result
= ac_build_shader_clock(&ctx
->ac
);
3320 case nir_intrinsic_discard
:
3321 case nir_intrinsic_discard_if
:
3322 emit_discard(ctx
, instr
);
3324 case nir_intrinsic_memory_barrier
:
3325 case nir_intrinsic_group_memory_barrier
:
3326 case nir_intrinsic_memory_barrier_atomic_counter
:
3327 case nir_intrinsic_memory_barrier_buffer
:
3328 case nir_intrinsic_memory_barrier_image
:
3329 case nir_intrinsic_memory_barrier_shared
:
3330 emit_membar(&ctx
->ac
, instr
);
3332 case nir_intrinsic_barrier
:
3333 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
3335 case nir_intrinsic_shared_atomic_add
:
3336 case nir_intrinsic_shared_atomic_imin
:
3337 case nir_intrinsic_shared_atomic_umin
:
3338 case nir_intrinsic_shared_atomic_imax
:
3339 case nir_intrinsic_shared_atomic_umax
:
3340 case nir_intrinsic_shared_atomic_and
:
3341 case nir_intrinsic_shared_atomic_or
:
3342 case nir_intrinsic_shared_atomic_xor
:
3343 case nir_intrinsic_shared_atomic_exchange
:
3344 case nir_intrinsic_shared_atomic_comp_swap
: {
3345 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
3346 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3349 case nir_intrinsic_deref_atomic_add
:
3350 case nir_intrinsic_deref_atomic_imin
:
3351 case nir_intrinsic_deref_atomic_umin
:
3352 case nir_intrinsic_deref_atomic_imax
:
3353 case nir_intrinsic_deref_atomic_umax
:
3354 case nir_intrinsic_deref_atomic_and
:
3355 case nir_intrinsic_deref_atomic_or
:
3356 case nir_intrinsic_deref_atomic_xor
:
3357 case nir_intrinsic_deref_atomic_exchange
:
3358 case nir_intrinsic_deref_atomic_comp_swap
: {
3359 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
3360 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3363 case nir_intrinsic_interp_deref_at_centroid
:
3364 case nir_intrinsic_interp_deref_at_sample
:
3365 case nir_intrinsic_interp_deref_at_offset
:
3366 result
= visit_interp(ctx
, instr
);
3368 case nir_intrinsic_emit_vertex
:
3369 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
3371 case nir_intrinsic_end_primitive
:
3372 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
3374 case nir_intrinsic_load_tess_coord
:
3375 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
3377 case nir_intrinsic_load_tess_level_outer
:
3378 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
);
3380 case nir_intrinsic_load_tess_level_inner
:
3381 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
);
3383 case nir_intrinsic_load_patch_vertices_in
:
3384 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
3386 case nir_intrinsic_vote_all
: {
3387 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3388 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3391 case nir_intrinsic_vote_any
: {
3392 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3393 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3396 case nir_intrinsic_shuffle
:
3397 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3398 get_src(ctx
, instr
->src
[1]));
3400 case nir_intrinsic_reduce
:
3401 result
= ac_build_reduce(&ctx
->ac
,
3402 get_src(ctx
, instr
->src
[0]),
3403 instr
->const_index
[0],
3404 instr
->const_index
[1]);
3406 case nir_intrinsic_inclusive_scan
:
3407 result
= ac_build_inclusive_scan(&ctx
->ac
,
3408 get_src(ctx
, instr
->src
[0]),
3409 instr
->const_index
[0]);
3411 case nir_intrinsic_exclusive_scan
:
3412 result
= ac_build_exclusive_scan(&ctx
->ac
,
3413 get_src(ctx
, instr
->src
[0]),
3414 instr
->const_index
[0]);
3416 case nir_intrinsic_quad_broadcast
: {
3417 unsigned lane
= nir_src_as_uint(instr
->src
[1]);
3418 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3419 lane
, lane
, lane
, lane
);
3422 case nir_intrinsic_quad_swap_horizontal
:
3423 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
3425 case nir_intrinsic_quad_swap_vertical
:
3426 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
3428 case nir_intrinsic_quad_swap_diagonal
:
3429 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
3431 case nir_intrinsic_quad_swizzle_amd
: {
3432 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3433 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3434 mask
& 0x3, (mask
>> 2) & 0x3,
3435 (mask
>> 4) & 0x3, (mask
>> 6) & 0x3);
3438 case nir_intrinsic_masked_swizzle_amd
: {
3439 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3440 result
= ac_build_ds_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), mask
);
3443 case nir_intrinsic_write_invocation_amd
:
3444 result
= ac_build_writelane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3445 get_src(ctx
, instr
->src
[1]),
3446 get_src(ctx
, instr
->src
[2]));
3448 case nir_intrinsic_mbcnt_amd
:
3449 result
= ac_build_mbcnt(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3452 fprintf(stderr
, "Unknown intrinsic: ");
3453 nir_print_instr(&instr
->instr
, stderr
);
3454 fprintf(stderr
, "\n");
3458 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3462 static LLVMValueRef
get_bindless_index_from_uniform(struct ac_nir_context
*ctx
,
3463 unsigned base_index
,
3464 unsigned constant_index
,
3465 LLVMValueRef dynamic_index
)
3467 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, base_index
* 4, 0);
3468 LLVMValueRef index
= LLVMBuildAdd(ctx
->ac
.builder
, dynamic_index
,
3469 LLVMConstInt(ctx
->ac
.i32
, constant_index
, 0), "");
3471 /* Bindless uniforms are 64bit so multiple index by 8 */
3472 index
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i32
, 8, 0), "");
3473 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, index
, "");
3475 LLVMValueRef ubo_index
= ctx
->abi
->load_ubo(ctx
->abi
, ctx
->ac
.i32_0
);
3477 LLVMValueRef ret
= ac_build_buffer_load(&ctx
->ac
, ubo_index
, 1, NULL
, offset
,
3478 NULL
, 0, 0, true, true);
3480 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ctx
->ac
.i32
, "");
3483 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
3484 nir_deref_instr
*deref_instr
,
3485 enum ac_descriptor_type desc_type
,
3486 const nir_instr
*instr
,
3487 bool image
, bool write
)
3489 LLVMValueRef index
= NULL
;
3490 unsigned constant_index
= 0;
3491 unsigned descriptor_set
;
3492 unsigned base_index
;
3493 bool bindless
= false;
3498 nir_intrinsic_instr
*img_instr
= nir_instr_as_intrinsic(instr
);
3501 index
= get_src(ctx
, img_instr
->src
[0]);
3503 nir_tex_instr
*tex_instr
= nir_instr_as_tex(instr
);
3504 int sampSrcIdx
= nir_tex_instr_src_index(tex_instr
,
3505 nir_tex_src_sampler_handle
);
3506 if (sampSrcIdx
!= -1) {
3509 index
= get_src(ctx
, tex_instr
->src
[sampSrcIdx
].src
);
3511 assert(tex_instr
&& !image
);
3512 base_index
= tex_instr
->sampler_index
;
3516 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3517 if (deref_instr
->deref_type
== nir_deref_type_array
) {
3518 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
3522 if (nir_src_is_const(deref_instr
->arr
.index
)) {
3523 constant_index
+= array_size
* nir_src_as_uint(deref_instr
->arr
.index
);
3525 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3527 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3528 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
3533 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
3536 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3537 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
3538 unsigned sidx
= deref_instr
->strct
.index
;
3539 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3540 constant_index
+= glsl_get_struct_location_offset(deref_instr
->type
, sidx
);
3542 unreachable("Unsupported deref type");
3545 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
3547 if (deref_instr
->var
->data
.bindless
) {
3548 /* For now just assert on unhandled variable types */
3549 assert(deref_instr
->var
->data
.mode
== nir_var_uniform
);
3551 base_index
= deref_instr
->var
->data
.driver_location
;
3554 index
= index
? index
: ctx
->ac
.i32_0
;
3555 index
= get_bindless_index_from_uniform(ctx
, base_index
,
3556 constant_index
, index
);
3558 base_index
= deref_instr
->var
->data
.binding
;
3561 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
3564 constant_index
, index
,
3565 desc_type
, image
, write
, bindless
);
3568 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
3571 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
3572 * filtering manually. The driver sets img7 to a mask clearing
3573 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
3574 * s_and_b32 samp0, samp0, img7
3577 * The ANISO_OVERRIDE sampler field enables this fix in TA.
3579 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
3580 LLVMValueRef res
, LLVMValueRef samp
)
3582 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3583 LLVMValueRef img7
, samp0
;
3585 if (ctx
->ac
.chip_class
>= GFX8
)
3588 img7
= LLVMBuildExtractElement(builder
, res
,
3589 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
3590 samp0
= LLVMBuildExtractElement(builder
, samp
,
3591 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3592 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
3593 return LLVMBuildInsertElement(builder
, samp
, samp0
,
3594 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3597 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
3598 nir_tex_instr
*instr
,
3599 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
3600 LLVMValueRef
*fmask_ptr
)
3602 nir_deref_instr
*texture_deref_instr
= NULL
;
3603 nir_deref_instr
*sampler_deref_instr
= NULL
;
3606 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3607 switch (instr
->src
[i
].src_type
) {
3608 case nir_tex_src_texture_deref
:
3609 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3611 case nir_tex_src_sampler_deref
:
3612 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3614 case nir_tex_src_plane
:
3615 plane
= nir_src_as_int(instr
->src
[i
].src
);
3622 if (!sampler_deref_instr
)
3623 sampler_deref_instr
= texture_deref_instr
;
3625 enum ac_descriptor_type main_descriptor
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
? AC_DESC_BUFFER
: AC_DESC_IMAGE
;
3628 assert(instr
->op
!= nir_texop_txf_ms
&&
3629 instr
->op
!= nir_texop_samples_identical
);
3630 assert(instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
);
3632 main_descriptor
= AC_DESC_PLANE_0
+ plane
;
3635 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, main_descriptor
, &instr
->instr
, false, false);
3638 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, &instr
->instr
, false, false);
3639 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
3640 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
3642 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
3643 instr
->op
== nir_texop_samples_identical
))
3644 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
, &instr
->instr
, false, false);
3647 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
3650 coord
= ac_to_float(ctx
, coord
);
3651 coord
= ac_build_round(ctx
, coord
);
3652 coord
= ac_to_integer(ctx
, coord
);
3656 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
3658 LLVMValueRef result
= NULL
;
3659 struct ac_image_args args
= { 0 };
3660 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
3661 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
3662 unsigned offset_src
= 0;
3664 tex_fetch_ptrs(ctx
, instr
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
3666 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3667 switch (instr
->src
[i
].src_type
) {
3668 case nir_tex_src_coord
: {
3669 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
3670 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
3671 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
3674 case nir_tex_src_projector
:
3676 case nir_tex_src_comparator
:
3677 if (instr
->is_shadow
)
3678 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
3680 case nir_tex_src_offset
:
3681 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
3684 case nir_tex_src_bias
:
3685 if (instr
->op
== nir_texop_txb
)
3686 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
3688 case nir_tex_src_lod
: {
3689 if (nir_src_is_const(instr
->src
[i
].src
) && nir_src_as_uint(instr
->src
[i
].src
) == 0)
3690 args
.level_zero
= true;
3692 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
3695 case nir_tex_src_ms_index
:
3696 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
3698 case nir_tex_src_ms_mcs
:
3700 case nir_tex_src_ddx
:
3701 ddx
= get_src(ctx
, instr
->src
[i
].src
);
3703 case nir_tex_src_ddy
:
3704 ddy
= get_src(ctx
, instr
->src
[i
].src
);
3706 case nir_tex_src_texture_offset
:
3707 case nir_tex_src_sampler_offset
:
3708 case nir_tex_src_plane
:
3714 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
3715 result
= get_buffer_size(ctx
, args
.resource
, true);
3719 if (instr
->op
== nir_texop_texture_samples
) {
3720 LLVMValueRef res
, samples
, is_msaa
;
3721 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
3722 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
3723 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
3724 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
3725 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
3726 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
3727 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
3728 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
3729 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
3731 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
3732 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
3733 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
3734 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
3735 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
3737 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
3743 if (args
.offset
&& instr
->op
!= nir_texop_txf
) {
3744 LLVMValueRef offset
[3], pack
;
3745 for (unsigned chan
= 0; chan
< 3; ++chan
)
3746 offset
[chan
] = ctx
->ac
.i32_0
;
3748 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
3749 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
3750 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
3751 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
3752 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
3754 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
3755 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
3757 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
3758 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
3762 /* TC-compatible HTILE on radeonsi promotes Z16 and Z24 to Z32_FLOAT,
3763 * so the depth comparison value isn't clamped for Z16 and
3764 * Z24 anymore. Do it manually here.
3766 * It's unnecessary if the original texture format was
3767 * Z32_FLOAT, but we don't know that here.
3769 if (args
.compare
&& ctx
->ac
.chip_class
>= GFX8
&& ctx
->abi
->clamp_shadow_reference
)
3770 args
.compare
= ac_build_clamp(&ctx
->ac
, ac_to_float(&ctx
->ac
, args
.compare
));
3772 /* pack derivatives */
3774 int num_src_deriv_channels
, num_dest_deriv_channels
;
3775 switch (instr
->sampler_dim
) {
3776 case GLSL_SAMPLER_DIM_3D
:
3777 case GLSL_SAMPLER_DIM_CUBE
:
3778 num_src_deriv_channels
= 3;
3779 num_dest_deriv_channels
= 3;
3781 case GLSL_SAMPLER_DIM_2D
:
3783 num_src_deriv_channels
= 2;
3784 num_dest_deriv_channels
= 2;
3786 case GLSL_SAMPLER_DIM_1D
:
3787 num_src_deriv_channels
= 1;
3788 if (ctx
->ac
.chip_class
>= GFX9
) {
3789 num_dest_deriv_channels
= 2;
3791 num_dest_deriv_channels
= 1;
3796 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
3797 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
3798 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
3799 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
3800 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
3802 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
3803 args
.derivs
[i
] = ctx
->ac
.f32_0
;
3804 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
3808 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
3809 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
3810 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
3811 if (instr
->coord_components
== 3)
3812 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
3813 ac_prepare_cube_coords(&ctx
->ac
,
3814 instr
->op
== nir_texop_txd
, instr
->is_array
,
3815 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
3818 /* Texture coordinates fixups */
3819 if (instr
->coord_components
> 1 &&
3820 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
3822 instr
->op
!= nir_texop_txf
) {
3823 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
3826 if (instr
->coord_components
> 2 &&
3827 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
3828 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
3829 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
3830 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
3832 instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
3833 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
3836 if (ctx
->ac
.chip_class
>= GFX9
&&
3837 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
3838 instr
->op
!= nir_texop_lod
) {
3839 LLVMValueRef filler
;
3840 if (instr
->op
== nir_texop_txf
)
3841 filler
= ctx
->ac
.i32_0
;
3843 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
3845 if (instr
->is_array
)
3846 args
.coords
[2] = args
.coords
[1];
3847 args
.coords
[1] = filler
;
3850 /* Pack sample index */
3851 if (instr
->op
== nir_texop_txf_ms
&& sample_index
)
3852 args
.coords
[instr
->coord_components
] = sample_index
;
3854 if (instr
->op
== nir_texop_samples_identical
) {
3855 struct ac_image_args txf_args
= { 0 };
3856 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
3858 txf_args
.dmask
= 0xf;
3859 txf_args
.resource
= fmask_ptr
;
3860 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
3861 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
3863 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
3864 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
3868 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
&&
3869 instr
->op
!= nir_texop_txs
) {
3870 unsigned sample_chan
= instr
->is_array
? 3 : 2;
3871 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
3872 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
3873 instr
->is_array
? args
.coords
[2] : NULL
,
3874 args
.coords
[sample_chan
], fmask_ptr
);
3877 if (args
.offset
&& instr
->op
== nir_texop_txf
) {
3878 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
3879 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
3880 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
3881 args
.coords
[i
] = LLVMBuildAdd(
3882 ctx
->ac
.builder
, args
.coords
[i
],
3883 LLVMConstInt(ctx
->ac
.i32
, nir_src_comp_as_uint(instr
->src
[offset_src
].src
, i
), false), "");
3888 /* DMASK was repurposed for GATHER4. 4 components are always
3889 * returned and DMASK works like a swizzle - it selects
3890 * the component to fetch. The only valid DMASK values are
3891 * 1=red, 2=green, 4=blue, 8=alpha. (e.g. 1 returns
3892 * (red,red,red,red) etc.) The ISA document doesn't mention
3896 if (instr
->op
== nir_texop_tg4
) {
3897 if (instr
->is_shadow
)
3900 args
.dmask
= 1 << instr
->component
;
3903 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
)
3904 args
.dim
= get_ac_sampler_dim(&ctx
->ac
, instr
->sampler_dim
, instr
->is_array
);
3905 result
= build_tex_intrinsic(ctx
, instr
, &args
);
3907 if (instr
->op
== nir_texop_query_levels
)
3908 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
3909 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
3910 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
3911 instr
->op
!= nir_texop_tg4
)
3912 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
3913 else if (instr
->op
== nir_texop_txs
&&
3914 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
3916 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
3917 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
3918 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
3919 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
3920 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
3921 } else if (ctx
->ac
.chip_class
>= GFX9
&&
3922 instr
->op
== nir_texop_txs
&&
3923 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
3925 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
3926 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
3927 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
3929 } else if (instr
->dest
.ssa
.num_components
!= 4)
3930 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
3934 assert(instr
->dest
.is_ssa
);
3935 result
= ac_to_integer(&ctx
->ac
, result
);
3936 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3941 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
3943 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
3944 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
3946 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3947 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
3950 static void visit_post_phi(struct ac_nir_context
*ctx
,
3951 nir_phi_instr
*instr
,
3952 LLVMValueRef llvm_phi
)
3954 nir_foreach_phi_src(src
, instr
) {
3955 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
3956 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
3958 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
3962 static void phi_post_pass(struct ac_nir_context
*ctx
)
3964 hash_table_foreach(ctx
->phis
, entry
) {
3965 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
3966 (LLVMValueRef
)entry
->data
);
3971 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
3972 const nir_ssa_undef_instr
*instr
)
3974 unsigned num_components
= instr
->def
.num_components
;
3975 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
3978 if (num_components
== 1)
3979 undef
= LLVMGetUndef(type
);
3981 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
3983 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
3986 static void visit_jump(struct ac_llvm_context
*ctx
,
3987 const nir_jump_instr
*instr
)
3989 switch (instr
->type
) {
3990 case nir_jump_break
:
3991 ac_build_break(ctx
);
3993 case nir_jump_continue
:
3994 ac_build_continue(ctx
);
3997 fprintf(stderr
, "Unknown NIR jump instr: ");
3998 nir_print_instr(&instr
->instr
, stderr
);
3999 fprintf(stderr
, "\n");
4005 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
4006 enum glsl_base_type type
)
4010 case GLSL_TYPE_UINT
:
4011 case GLSL_TYPE_BOOL
:
4012 case GLSL_TYPE_SUBROUTINE
:
4014 case GLSL_TYPE_INT8
:
4015 case GLSL_TYPE_UINT8
:
4017 case GLSL_TYPE_INT16
:
4018 case GLSL_TYPE_UINT16
:
4020 case GLSL_TYPE_FLOAT
:
4022 case GLSL_TYPE_FLOAT16
:
4024 case GLSL_TYPE_INT64
:
4025 case GLSL_TYPE_UINT64
:
4027 case GLSL_TYPE_DOUBLE
:
4030 unreachable("unknown GLSL type");
4035 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
4036 const struct glsl_type
*type
)
4038 if (glsl_type_is_scalar(type
)) {
4039 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
4042 if (glsl_type_is_vector(type
)) {
4043 return LLVMVectorType(
4044 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
4045 glsl_get_vector_elements(type
));
4048 if (glsl_type_is_matrix(type
)) {
4049 return LLVMArrayType(
4050 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
4051 glsl_get_matrix_columns(type
));
4054 if (glsl_type_is_array(type
)) {
4055 return LLVMArrayType(
4056 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
4057 glsl_get_length(type
));
4060 assert(glsl_type_is_struct_or_ifc(type
));
4062 LLVMTypeRef member_types
[glsl_get_length(type
)];
4064 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
4066 glsl_to_llvm_type(ac
,
4067 glsl_get_struct_field(type
, i
));
4070 return LLVMStructTypeInContext(ac
->context
, member_types
,
4071 glsl_get_length(type
), false);
4074 static void visit_deref(struct ac_nir_context
*ctx
,
4075 nir_deref_instr
*instr
)
4077 if (instr
->mode
!= nir_var_mem_shared
&&
4078 instr
->mode
!= nir_var_mem_global
)
4081 LLVMValueRef result
= NULL
;
4082 switch(instr
->deref_type
) {
4083 case nir_deref_type_var
: {
4084 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
4085 result
= entry
->data
;
4088 case nir_deref_type_struct
:
4089 if (instr
->mode
== nir_var_mem_global
) {
4090 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4091 uint64_t offset
= glsl_get_struct_field_offset(parent
->type
,
4092 instr
->strct
.index
);
4093 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4094 LLVMConstInt(ctx
->ac
.i32
, offset
, 0));
4096 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4097 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
4100 case nir_deref_type_array
:
4101 if (instr
->mode
== nir_var_mem_global
) {
4102 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4103 unsigned stride
= glsl_get_explicit_stride(parent
->type
);
4105 if ((glsl_type_is_matrix(parent
->type
) &&
4106 glsl_matrix_type_is_row_major(parent
->type
)) ||
4107 (glsl_type_is_vector(parent
->type
) && stride
== 0))
4108 stride
= type_scalar_size_bytes(parent
->type
);
4111 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4112 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4113 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4115 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4117 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4119 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4120 get_src(ctx
, instr
->arr
.index
));
4123 case nir_deref_type_ptr_as_array
:
4124 if (instr
->mode
== nir_var_mem_global
) {
4125 unsigned stride
= nir_deref_instr_ptr_as_array_stride(instr
);
4127 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4128 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4129 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4131 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4133 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4135 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4136 get_src(ctx
, instr
->arr
.index
));
4139 case nir_deref_type_cast
: {
4140 result
= get_src(ctx
, instr
->parent
);
4142 /* We can't use the structs from LLVM because the shader
4143 * specifies its own offsets. */
4144 LLVMTypeRef pointee_type
= ctx
->ac
.i8
;
4145 if (instr
->mode
== nir_var_mem_shared
)
4146 pointee_type
= glsl_to_llvm_type(&ctx
->ac
, instr
->type
);
4148 unsigned address_space
;
4150 switch(instr
->mode
) {
4151 case nir_var_mem_shared
:
4152 address_space
= AC_ADDR_SPACE_LDS
;
4154 case nir_var_mem_global
:
4155 address_space
= AC_ADDR_SPACE_GLOBAL
;
4158 unreachable("Unhandled address space");
4161 LLVMTypeRef type
= LLVMPointerType(pointee_type
, address_space
);
4163 if (LLVMTypeOf(result
) != type
) {
4164 if (LLVMGetTypeKind(LLVMTypeOf(result
)) == LLVMVectorTypeKind
) {
4165 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
,
4168 result
= LLVMBuildIntToPtr(ctx
->ac
.builder
, result
,
4175 unreachable("Unhandled deref_instr deref type");
4178 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4181 static void visit_cf_list(struct ac_nir_context
*ctx
,
4182 struct exec_list
*list
);
4184 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
4186 LLVMBasicBlockRef llvm_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
4187 nir_foreach_instr(instr
, block
)
4189 switch (instr
->type
) {
4190 case nir_instr_type_alu
:
4191 visit_alu(ctx
, nir_instr_as_alu(instr
));
4193 case nir_instr_type_load_const
:
4194 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
4196 case nir_instr_type_intrinsic
:
4197 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
4199 case nir_instr_type_tex
:
4200 visit_tex(ctx
, nir_instr_as_tex(instr
));
4202 case nir_instr_type_phi
:
4203 visit_phi(ctx
, nir_instr_as_phi(instr
));
4205 case nir_instr_type_ssa_undef
:
4206 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
4208 case nir_instr_type_jump
:
4209 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
4211 case nir_instr_type_deref
:
4212 visit_deref(ctx
, nir_instr_as_deref(instr
));
4215 fprintf(stderr
, "Unknown NIR instr type: ");
4216 nir_print_instr(instr
, stderr
);
4217 fprintf(stderr
, "\n");
4222 _mesa_hash_table_insert(ctx
->defs
, block
, llvm_block
);
4225 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
4227 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
4229 nir_block
*then_block
=
4230 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
4232 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
4234 visit_cf_list(ctx
, &if_stmt
->then_list
);
4236 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
4237 nir_block
*else_block
=
4238 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
4240 ac_build_else(&ctx
->ac
, else_block
->index
);
4241 visit_cf_list(ctx
, &if_stmt
->else_list
);
4244 ac_build_endif(&ctx
->ac
, then_block
->index
);
4247 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
4249 nir_block
*first_loop_block
=
4250 (nir_block
*) exec_list_get_head(&loop
->body
);
4252 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
4254 visit_cf_list(ctx
, &loop
->body
);
4256 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
4259 static void visit_cf_list(struct ac_nir_context
*ctx
,
4260 struct exec_list
*list
)
4262 foreach_list_typed(nir_cf_node
, node
, node
, list
)
4264 switch (node
->type
) {
4265 case nir_cf_node_block
:
4266 visit_block(ctx
, nir_cf_node_as_block(node
));
4269 case nir_cf_node_if
:
4270 visit_if(ctx
, nir_cf_node_as_if(node
));
4273 case nir_cf_node_loop
:
4274 visit_loop(ctx
, nir_cf_node_as_loop(node
));
4284 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
4285 struct ac_shader_abi
*abi
,
4286 struct nir_shader
*nir
,
4287 struct nir_variable
*variable
,
4288 gl_shader_stage stage
)
4290 unsigned output_loc
= variable
->data
.driver_location
/ 4;
4291 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4293 /* tess ctrl has it's own load/store paths for outputs */
4294 if (stage
== MESA_SHADER_TESS_CTRL
)
4297 if (stage
== MESA_SHADER_VERTEX
||
4298 stage
== MESA_SHADER_TESS_EVAL
||
4299 stage
== MESA_SHADER_GEOMETRY
) {
4300 int idx
= variable
->data
.location
+ variable
->data
.index
;
4301 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
4302 int length
= nir
->info
.clip_distance_array_size
+
4303 nir
->info
.cull_distance_array_size
;
4312 bool is_16bit
= glsl_type_is_16bit(glsl_without_array(variable
->type
));
4313 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
4314 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
4315 for (unsigned chan
= 0; chan
< 4; chan
++) {
4316 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
4317 ac_build_alloca_undef(ctx
, type
, "");
4323 setup_locals(struct ac_nir_context
*ctx
,
4324 struct nir_function
*func
)
4327 ctx
->num_locals
= 0;
4328 nir_foreach_variable(variable
, &func
->impl
->locals
) {
4329 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4330 variable
->data
.driver_location
= ctx
->num_locals
* 4;
4331 variable
->data
.location_frac
= 0;
4332 ctx
->num_locals
+= attrib_count
;
4334 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
4338 for (i
= 0; i
< ctx
->num_locals
; i
++) {
4339 for (j
= 0; j
< 4; j
++) {
4340 ctx
->locals
[i
* 4 + j
] =
4341 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
4347 setup_shared(struct ac_nir_context
*ctx
,
4348 struct nir_shader
*nir
)
4350 nir_foreach_variable(variable
, &nir
->shared
) {
4351 LLVMValueRef shared
=
4352 LLVMAddGlobalInAddressSpace(
4353 ctx
->ac
.module
, glsl_to_llvm_type(&ctx
->ac
, variable
->type
),
4354 variable
->name
? variable
->name
: "",
4356 _mesa_hash_table_insert(ctx
->vars
, variable
, shared
);
4360 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
4361 struct nir_shader
*nir
)
4363 struct ac_nir_context ctx
= {};
4364 struct nir_function
*func
;
4369 ctx
.stage
= nir
->info
.stage
;
4370 ctx
.info
= &nir
->info
;
4372 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
4374 nir_foreach_variable(variable
, &nir
->outputs
)
4375 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
4378 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4379 _mesa_key_pointer_equal
);
4380 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4381 _mesa_key_pointer_equal
);
4382 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4383 _mesa_key_pointer_equal
);
4385 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
4387 nir_index_ssa_defs(func
->impl
);
4388 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
4390 setup_locals(&ctx
, func
);
4392 if (gl_shader_stage_is_compute(nir
->info
.stage
))
4393 setup_shared(&ctx
, nir
);
4395 visit_cf_list(&ctx
, &func
->impl
->body
);
4396 phi_post_pass(&ctx
);
4398 if (!gl_shader_stage_is_compute(nir
->info
.stage
))
4399 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
4404 ralloc_free(ctx
.defs
);
4405 ralloc_free(ctx
.phis
);
4406 ralloc_free(ctx
.vars
);
4410 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
4412 /* While it would be nice not to have this flag, we are constrained
4413 * by the reality that LLVM 5.0 doesn't have working VGPR indexing
4416 bool llvm_has_working_vgpr_indexing
= chip_class
<= GFX8
;
4418 /* TODO: Indirect indexing of GS inputs is unimplemented.
4420 * TCS and TES load inputs directly from LDS or offchip memory, so
4421 * indirect indexing is trivial.
4423 nir_variable_mode indirect_mask
= 0;
4424 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
4425 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
4426 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
4427 !llvm_has_working_vgpr_indexing
)) {
4428 indirect_mask
|= nir_var_shader_in
;
4430 if (!llvm_has_working_vgpr_indexing
&&
4431 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
4432 indirect_mask
|= nir_var_shader_out
;
4434 /* TODO: We shouldn't need to do this, however LLVM isn't currently
4435 * smart enough to handle indirects without causing excess spilling
4436 * causing the gpu to hang.
4438 * See the following thread for more details of the problem:
4439 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
4441 indirect_mask
|= nir_var_function_temp
;
4443 nir_lower_indirect_derefs(nir
, indirect_mask
);
4447 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
4449 if (intrin
->intrinsic
!= nir_intrinsic_store_deref
)
4453 nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[0]));
4455 if (var
->data
.mode
!= nir_var_shader_out
)
4458 unsigned writemask
= 0;
4459 const int location
= var
->data
.location
;
4460 unsigned first_component
= var
->data
.location_frac
;
4461 unsigned num_comps
= intrin
->dest
.ssa
.num_components
;
4463 if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
4464 writemask
= ((1 << (num_comps
+ 1)) - 1) << first_component
;
4465 else if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
4466 writemask
= (((1 << (num_comps
+ 1)) - 1) << first_component
) << 4;
4472 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
4473 unsigned *cond_block_tf_writemask
,
4474 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
4476 switch (cf_node
->type
) {
4477 case nir_cf_node_block
: {
4478 nir_block
*block
= nir_cf_node_as_block(cf_node
);
4479 nir_foreach_instr(instr
, block
) {
4480 if (instr
->type
!= nir_instr_type_intrinsic
)
4483 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
4484 if (intrin
->intrinsic
== nir_intrinsic_barrier
) {
4486 /* If we find a barrier in nested control flow put this in the
4487 * too hard basket. In GLSL this is not possible but it is in
4491 *tessfactors_are_def_in_all_invocs
= false;
4495 /* The following case must be prevented:
4496 * gl_TessLevelInner = ...;
4498 * if (gl_InvocationID == 1)
4499 * gl_TessLevelInner = ...;
4501 * If you consider disjoint code segments separated by barriers, each
4502 * such segment that writes tess factor channels should write the same
4503 * channels in all codepaths within that segment.
4505 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
4506 /* Accumulate the result: */
4507 *tessfactors_are_def_in_all_invocs
&=
4508 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
4510 /* Analyze the next code segment from scratch. */
4511 *upper_block_tf_writemask
= 0;
4512 *cond_block_tf_writemask
= 0;
4515 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
4520 case nir_cf_node_if
: {
4521 unsigned then_tessfactor_writemask
= 0;
4522 unsigned else_tessfactor_writemask
= 0;
4524 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
4525 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
4526 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
4527 cond_block_tf_writemask
,
4528 tessfactors_are_def_in_all_invocs
, true);
4531 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
4532 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
4533 cond_block_tf_writemask
,
4534 tessfactors_are_def_in_all_invocs
, true);
4537 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
4538 /* If both statements write the same tess factor channels,
4539 * we can say that the upper block writes them too.
4541 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
4542 else_tessfactor_writemask
;
4543 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
4544 else_tessfactor_writemask
;
4549 case nir_cf_node_loop
: {
4550 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
4551 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
4552 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
4553 cond_block_tf_writemask
,
4554 tessfactors_are_def_in_all_invocs
, true);
4560 unreachable("unknown cf node type");
4565 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
4567 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
4569 /* The pass works as follows:
4570 * If all codepaths write tess factors, we can say that all
4571 * invocations define tess factors.
4573 * Each tess factor channel is tracked separately.
4575 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
4576 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
4578 /* Initial value = true. Here the pass will accumulate results from
4579 * multiple segments surrounded by barriers. If tess factors aren't
4580 * written at all, it's a shader bug and we don't care if this will be
4583 bool tessfactors_are_def_in_all_invocs
= true;
4585 nir_foreach_function(function
, nir
) {
4586 if (function
->impl
) {
4587 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
4588 scan_tess_ctrl(node
, &main_block_tf_writemask
,
4589 &cond_block_tf_writemask
,
4590 &tessfactors_are_def_in_all_invocs
,
4596 /* Accumulate the result for the last code segment separated by a
4599 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
4600 tessfactors_are_def_in_all_invocs
&=
4601 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
4604 return tessfactors_are_def_in_all_invocs
;