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 <llvm/Config/llvm-config.h>
26 #include "ac_nir_to_llvm.h"
27 #include "ac_llvm_build.h"
28 #include "ac_llvm_util.h"
29 #include "ac_binary.h"
32 #include "nir/nir_deref.h"
33 #include "util/bitscan.h"
34 #include "util/u_math.h"
35 #include "ac_shader_abi.h"
36 #include "ac_shader_util.h"
38 struct ac_nir_context
{
39 struct ac_llvm_context ac
;
40 struct ac_shader_abi
*abi
;
42 gl_shader_stage stage
;
45 LLVMValueRef
*ssa_defs
;
48 LLVMValueRef constant_data
;
50 struct hash_table
*defs
;
51 struct hash_table
*phis
;
52 struct hash_table
*vars
;
54 LLVMValueRef main_function
;
55 LLVMBasicBlockRef continue_block
;
56 LLVMBasicBlockRef break_block
;
62 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
63 nir_deref_instr
*deref_instr
,
64 enum ac_descriptor_type desc_type
,
65 const nir_instr
*instr
,
66 bool image
, bool write
);
69 build_store_values_extended(struct ac_llvm_context
*ac
,
72 unsigned value_stride
,
75 LLVMBuilderRef builder
= ac
->builder
;
78 for (i
= 0; i
< value_count
; i
++) {
79 LLVMValueRef ptr
= values
[i
* value_stride
];
80 LLVMValueRef index
= LLVMConstInt(ac
->i32
, i
, false);
81 LLVMValueRef value
= LLVMBuildExtractElement(builder
, vec
, index
, "");
82 LLVMBuildStore(builder
, value
, ptr
);
86 static LLVMTypeRef
get_def_type(struct ac_nir_context
*ctx
,
87 const nir_ssa_def
*def
)
89 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, def
->bit_size
);
90 if (def
->num_components
> 1) {
91 type
= LLVMVectorType(type
, def
->num_components
);
96 static LLVMValueRef
get_src(struct ac_nir_context
*nir
, nir_src src
)
99 return nir
->ssa_defs
[src
.ssa
->index
];
103 get_memory_ptr(struct ac_nir_context
*ctx
, nir_src src
)
105 LLVMValueRef ptr
= get_src(ctx
, src
);
106 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ctx
->ac
.lds
, &ptr
, 1, "");
107 int addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
109 return LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
110 LLVMPointerType(ctx
->ac
.i32
, addr_space
), "");
113 static LLVMBasicBlockRef
get_block(struct ac_nir_context
*nir
,
114 const struct nir_block
*b
)
116 struct hash_entry
*entry
= _mesa_hash_table_search(nir
->defs
, b
);
117 return (LLVMBasicBlockRef
)entry
->data
;
120 static LLVMValueRef
get_alu_src(struct ac_nir_context
*ctx
,
122 unsigned num_components
)
124 LLVMValueRef value
= get_src(ctx
, src
.src
);
125 bool need_swizzle
= false;
128 unsigned src_components
= ac_get_llvm_num_components(value
);
129 for (unsigned i
= 0; i
< num_components
; ++i
) {
130 assert(src
.swizzle
[i
] < src_components
);
131 if (src
.swizzle
[i
] != i
)
135 if (need_swizzle
|| num_components
!= src_components
) {
136 LLVMValueRef masks
[] = {
137 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[0], false),
138 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[1], false),
139 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[2], false),
140 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[3], false)};
142 if (src_components
> 1 && num_components
== 1) {
143 value
= LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
145 } else if (src_components
== 1 && num_components
> 1) {
146 LLVMValueRef values
[] = {value
, value
, value
, value
};
147 value
= ac_build_gather_values(&ctx
->ac
, values
, num_components
);
149 LLVMValueRef swizzle
= LLVMConstVector(masks
, num_components
);
150 value
= LLVMBuildShuffleVector(ctx
->ac
.builder
, value
, value
,
159 static LLVMValueRef
emit_int_cmp(struct ac_llvm_context
*ctx
,
160 LLVMIntPredicate pred
, LLVMValueRef src0
,
163 LLVMValueRef result
= LLVMBuildICmp(ctx
->builder
, pred
, src0
, src1
, "");
164 return LLVMBuildSelect(ctx
->builder
, result
,
165 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
169 static LLVMValueRef
emit_float_cmp(struct ac_llvm_context
*ctx
,
170 LLVMRealPredicate pred
, LLVMValueRef src0
,
174 src0
= ac_to_float(ctx
, src0
);
175 src1
= ac_to_float(ctx
, src1
);
176 result
= LLVMBuildFCmp(ctx
->builder
, pred
, src0
, src1
, "");
177 return LLVMBuildSelect(ctx
->builder
, result
,
178 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
182 static LLVMValueRef
emit_intrin_1f_param(struct ac_llvm_context
*ctx
,
184 LLVMTypeRef result_type
,
188 LLVMValueRef params
[] = {
189 ac_to_float(ctx
, src0
),
192 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
193 ac_get_elem_bits(ctx
, result_type
));
194 assert(length
< sizeof(name
));
195 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 1, AC_FUNC_ATTR_READNONE
);
198 static LLVMValueRef
emit_intrin_2f_param(struct ac_llvm_context
*ctx
,
200 LLVMTypeRef result_type
,
201 LLVMValueRef src0
, LLVMValueRef src1
)
204 LLVMValueRef params
[] = {
205 ac_to_float(ctx
, src0
),
206 ac_to_float(ctx
, src1
),
209 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
210 ac_get_elem_bits(ctx
, result_type
));
211 assert(length
< sizeof(name
));
212 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 2, AC_FUNC_ATTR_READNONE
);
215 static LLVMValueRef
emit_intrin_3f_param(struct ac_llvm_context
*ctx
,
217 LLVMTypeRef result_type
,
218 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
221 LLVMValueRef params
[] = {
222 ac_to_float(ctx
, src0
),
223 ac_to_float(ctx
, src1
),
224 ac_to_float(ctx
, src2
),
227 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
228 ac_get_elem_bits(ctx
, result_type
));
229 assert(length
< sizeof(name
));
230 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 3, AC_FUNC_ATTR_READNONE
);
233 static LLVMValueRef
emit_bcsel(struct ac_llvm_context
*ctx
,
234 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
236 assert(LLVMGetTypeKind(LLVMTypeOf(src0
)) != LLVMVectorTypeKind
);
238 LLVMValueRef v
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
,
240 return LLVMBuildSelect(ctx
->builder
, v
,
241 ac_to_integer_or_pointer(ctx
, src1
),
242 ac_to_integer_or_pointer(ctx
, src2
), "");
245 static LLVMValueRef
emit_iabs(struct ac_llvm_context
*ctx
,
248 return ac_build_imax(ctx
, src0
, LLVMBuildNeg(ctx
->builder
, src0
, ""));
251 static LLVMValueRef
emit_uint_carry(struct ac_llvm_context
*ctx
,
253 LLVMValueRef src0
, LLVMValueRef src1
)
255 LLVMTypeRef ret_type
;
256 LLVMTypeRef types
[] = { ctx
->i32
, ctx
->i1
};
258 LLVMValueRef params
[] = { src0
, src1
};
259 ret_type
= LLVMStructTypeInContext(ctx
->context
, types
,
262 res
= ac_build_intrinsic(ctx
, intrin
, ret_type
,
263 params
, 2, AC_FUNC_ATTR_READNONE
);
265 res
= LLVMBuildExtractValue(ctx
->builder
, res
, 1, "");
266 res
= LLVMBuildZExt(ctx
->builder
, res
, ctx
->i32
, "");
270 static LLVMValueRef
emit_b2f(struct ac_llvm_context
*ctx
,
274 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
,
275 LLVMBuildBitCast(ctx
->builder
, LLVMConstReal(ctx
->f32
, 1.0), ctx
->i32
, ""),
277 result
= LLVMBuildBitCast(ctx
->builder
, result
, ctx
->f32
, "");
281 return LLVMBuildFPTrunc(ctx
->builder
, result
, ctx
->f16
, "");
285 return LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f64
, "");
287 unreachable("Unsupported bit size.");
291 static LLVMValueRef
emit_f2b(struct ac_llvm_context
*ctx
,
294 src0
= ac_to_float(ctx
, src0
);
295 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
296 return LLVMBuildSExt(ctx
->builder
,
297 LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
, src0
, zero
, ""),
301 static LLVMValueRef
emit_b2i(struct ac_llvm_context
*ctx
,
305 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
, ctx
->i32_1
, "");
309 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i8
, "");
311 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i16
, "");
315 return LLVMBuildZExt(ctx
->builder
, result
, ctx
->i64
, "");
317 unreachable("Unsupported bit size.");
321 static LLVMValueRef
emit_i2b(struct ac_llvm_context
*ctx
,
324 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
325 return LLVMBuildSExt(ctx
->builder
,
326 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
, zero
, ""),
330 static LLVMValueRef
emit_f2f16(struct ac_llvm_context
*ctx
,
334 LLVMValueRef cond
= NULL
;
336 src0
= ac_to_float(ctx
, src0
);
337 result
= LLVMBuildFPTrunc(ctx
->builder
, src0
, ctx
->f16
, "");
339 if (ctx
->chip_class
>= GFX8
) {
340 LLVMValueRef args
[2];
341 /* Check if the result is a denormal - and flush to 0 if so. */
343 args
[1] = LLVMConstInt(ctx
->i32
, N_SUBNORMAL
| P_SUBNORMAL
, false);
344 cond
= ac_build_intrinsic(ctx
, "llvm.amdgcn.class.f16", ctx
->i1
, args
, 2, AC_FUNC_ATTR_READNONE
);
347 /* need to convert back up to f32 */
348 result
= LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f32
, "");
350 if (ctx
->chip_class
>= GFX8
)
351 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
354 /* 0x38800000 is smallest half float value (2^-14) in 32-bit float,
355 * so compare the result and flush to 0 if it's smaller.
357 LLVMValueRef temp
, cond2
;
358 temp
= emit_intrin_1f_param(ctx
, "llvm.fabs", ctx
->f32
, result
);
359 cond
= LLVMBuildFCmp(ctx
->builder
, LLVMRealOGT
,
360 LLVMBuildBitCast(ctx
->builder
, LLVMConstInt(ctx
->i32
, 0x38800000, false), ctx
->f32
, ""),
362 cond2
= LLVMBuildFCmp(ctx
->builder
, LLVMRealONE
,
363 temp
, ctx
->f32_0
, "");
364 cond
= LLVMBuildAnd(ctx
->builder
, cond
, cond2
, "");
365 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
370 static LLVMValueRef
emit_umul_high(struct ac_llvm_context
*ctx
,
371 LLVMValueRef src0
, LLVMValueRef src1
)
373 LLVMValueRef dst64
, result
;
374 src0
= LLVMBuildZExt(ctx
->builder
, src0
, ctx
->i64
, "");
375 src1
= LLVMBuildZExt(ctx
->builder
, src1
, ctx
->i64
, "");
377 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
378 dst64
= LLVMBuildLShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
379 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
383 static LLVMValueRef
emit_imul_high(struct ac_llvm_context
*ctx
,
384 LLVMValueRef src0
, LLVMValueRef src1
)
386 LLVMValueRef dst64
, result
;
387 src0
= LLVMBuildSExt(ctx
->builder
, src0
, ctx
->i64
, "");
388 src1
= LLVMBuildSExt(ctx
->builder
, src1
, ctx
->i64
, "");
390 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
391 dst64
= LLVMBuildAShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
392 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
396 static LLVMValueRef
emit_bfm(struct ac_llvm_context
*ctx
,
397 LLVMValueRef bits
, LLVMValueRef offset
)
399 /* mask = ((1 << bits) - 1) << offset */
400 return LLVMBuildShl(ctx
->builder
,
401 LLVMBuildSub(ctx
->builder
,
402 LLVMBuildShl(ctx
->builder
,
409 static LLVMValueRef
emit_bitfield_select(struct ac_llvm_context
*ctx
,
410 LLVMValueRef mask
, LLVMValueRef insert
,
414 * (mask & insert) | (~mask & base) = base ^ (mask & (insert ^ base))
415 * Use the right-hand side, which the LLVM backend can convert to V_BFI.
417 return LLVMBuildXor(ctx
->builder
, base
,
418 LLVMBuildAnd(ctx
->builder
, mask
,
419 LLVMBuildXor(ctx
->builder
, insert
, base
, ""), ""), "");
422 static LLVMValueRef
emit_pack_2x16(struct ac_llvm_context
*ctx
,
424 LLVMValueRef (*pack
)(struct ac_llvm_context
*ctx
,
425 LLVMValueRef args
[2]))
427 LLVMValueRef comp
[2];
429 src0
= ac_to_float(ctx
, src0
);
430 comp
[0] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_0
, "");
431 comp
[1] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_1
, "");
433 return LLVMBuildBitCast(ctx
->builder
, pack(ctx
, comp
), ctx
->i32
, "");
436 static LLVMValueRef
emit_unpack_half_2x16(struct ac_llvm_context
*ctx
,
439 LLVMValueRef const16
= LLVMConstInt(ctx
->i32
, 16, false);
440 LLVMValueRef temps
[2], val
;
443 for (i
= 0; i
< 2; i
++) {
444 val
= i
== 1 ? LLVMBuildLShr(ctx
->builder
, src0
, const16
, "") : src0
;
445 val
= LLVMBuildTrunc(ctx
->builder
, val
, ctx
->i16
, "");
446 val
= LLVMBuildBitCast(ctx
->builder
, val
, ctx
->f16
, "");
447 temps
[i
] = LLVMBuildFPExt(ctx
->builder
, val
, ctx
->f32
, "");
449 return ac_build_gather_values(ctx
, temps
, 2);
452 static LLVMValueRef
emit_ddxy(struct ac_nir_context
*ctx
,
460 if (op
== nir_op_fddx_fine
)
461 mask
= AC_TID_MASK_LEFT
;
462 else if (op
== nir_op_fddy_fine
)
463 mask
= AC_TID_MASK_TOP
;
465 mask
= AC_TID_MASK_TOP_LEFT
;
467 /* for DDX we want to next X pixel, DDY next Y pixel. */
468 if (op
== nir_op_fddx_fine
||
469 op
== nir_op_fddx_coarse
||
475 result
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, src0
);
479 static void visit_alu(struct ac_nir_context
*ctx
, const nir_alu_instr
*instr
)
481 LLVMValueRef src
[4], result
= NULL
;
482 unsigned num_components
= instr
->dest
.dest
.ssa
.num_components
;
483 unsigned src_components
;
484 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.dest
.ssa
);
486 assert(nir_op_infos
[instr
->op
].num_inputs
<= ARRAY_SIZE(src
));
493 case nir_op_pack_half_2x16
:
494 case nir_op_pack_snorm_2x16
:
495 case nir_op_pack_unorm_2x16
:
498 case nir_op_unpack_half_2x16
:
501 case nir_op_cube_face_coord
:
502 case nir_op_cube_face_index
:
506 src_components
= num_components
;
509 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
510 src
[i
] = get_alu_src(ctx
, instr
->src
[i
], src_components
);
517 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
518 result
= LLVMBuildFNeg(ctx
->ac
.builder
, src
[0], "");
519 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO
) {
520 /* fneg will be optimized by backend compiler with sign
521 * bit removed via XOR. This is probably a LLVM bug.
523 result
= ac_build_canonicalize(&ctx
->ac
, result
,
524 instr
->dest
.dest
.ssa
.bit_size
);
528 result
= LLVMBuildNeg(ctx
->ac
.builder
, src
[0], "");
531 result
= LLVMBuildNot(ctx
->ac
.builder
, src
[0], "");
534 result
= LLVMBuildAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
537 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
538 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
539 result
= LLVMBuildFAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
542 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
543 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
544 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], src
[1], "");
547 result
= LLVMBuildSub(ctx
->ac
.builder
, src
[0], src
[1], "");
550 result
= LLVMBuildMul(ctx
->ac
.builder
, src
[0], src
[1], "");
553 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
556 result
= LLVMBuildURem(ctx
->ac
.builder
, src
[0], src
[1], "");
559 /* lower_fmod only lower 16-bit and 32-bit fmod */
560 assert(instr
->dest
.dest
.ssa
.bit_size
== 64);
561 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
562 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
563 result
= ac_build_fdiv(&ctx
->ac
, src
[0], src
[1]);
564 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
565 ac_to_float_type(&ctx
->ac
, def_type
), result
);
566 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[1] , result
, "");
567 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], result
, "");
570 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
573 result
= LLVMBuildSDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
576 result
= LLVMBuildUDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
579 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
580 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
581 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[0], src
[1], "");
584 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
585 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(src
[0]), 1.0), src
[0]);
588 result
= LLVMBuildAnd(ctx
->ac
.builder
, src
[0], src
[1], "");
591 result
= LLVMBuildOr(ctx
->ac
.builder
, src
[0], src
[1], "");
594 result
= LLVMBuildXor(ctx
->ac
.builder
, src
[0], src
[1], "");
597 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
598 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
599 LLVMTypeOf(src
[0]), "");
600 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
601 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
602 LLVMTypeOf(src
[0]), "");
603 result
= LLVMBuildShl(ctx
->ac
.builder
, src
[0], src
[1], "");
606 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
607 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
608 LLVMTypeOf(src
[0]), "");
609 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
610 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
611 LLVMTypeOf(src
[0]), "");
612 result
= LLVMBuildAShr(ctx
->ac
.builder
, src
[0], src
[1], "");
615 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
616 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
617 LLVMTypeOf(src
[0]), "");
618 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
619 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
620 LLVMTypeOf(src
[0]), "");
621 result
= LLVMBuildLShr(ctx
->ac
.builder
, src
[0], src
[1], "");
624 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
627 result
= emit_int_cmp(&ctx
->ac
, LLVMIntNE
, src
[0], src
[1]);
630 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, src
[0], src
[1]);
633 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSGE
, src
[0], src
[1]);
636 result
= emit_int_cmp(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
639 result
= emit_int_cmp(&ctx
->ac
, LLVMIntUGE
, src
[0], src
[1]);
642 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOEQ
, src
[0], src
[1]);
645 result
= emit_float_cmp(&ctx
->ac
, LLVMRealUNE
, src
[0], src
[1]);
648 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOLT
, src
[0], src
[1]);
651 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOGE
, src
[0], src
[1]);
654 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.fabs",
655 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
656 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO
) {
657 /* fabs will be optimized by backend compiler with sign
658 * bit removed via AND.
660 result
= ac_build_canonicalize(&ctx
->ac
, result
,
661 instr
->dest
.dest
.ssa
.bit_size
);
665 result
= emit_iabs(&ctx
->ac
, src
[0]);
668 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
671 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
674 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
677 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
680 result
= ac_build_isign(&ctx
->ac
, src
[0],
681 instr
->dest
.dest
.ssa
.bit_size
);
684 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
685 result
= ac_build_fsign(&ctx
->ac
, src
[0],
686 instr
->dest
.dest
.ssa
.bit_size
);
689 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
690 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
693 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.trunc",
694 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
697 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.ceil",
698 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
700 case nir_op_fround_even
:
701 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.rint",
702 ac_to_float_type(&ctx
->ac
, def_type
),src
[0]);
705 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
706 result
= ac_build_fract(&ctx
->ac
, src
[0],
707 instr
->dest
.dest
.ssa
.bit_size
);
710 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sin",
711 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
714 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.cos",
715 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
718 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
719 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
722 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.exp2",
723 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
726 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.log2",
727 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
730 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
731 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
732 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(result
), 1.0), result
);
734 case nir_op_frexp_exp
:
735 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
736 result
= ac_build_frexp_exp(&ctx
->ac
, src
[0],
737 ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])));
738 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) == 16)
739 result
= LLVMBuildSExt(ctx
->ac
.builder
, result
,
742 case nir_op_frexp_sig
:
743 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
744 result
= ac_build_frexp_mant(&ctx
->ac
, src
[0],
745 instr
->dest
.dest
.ssa
.bit_size
);
748 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.pow",
749 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
752 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
753 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
754 if (ctx
->ac
.chip_class
< GFX9
&&
755 instr
->dest
.dest
.ssa
.bit_size
== 32) {
756 /* Only pre-GFX9 chips do not flush denorms. */
757 result
= ac_build_canonicalize(&ctx
->ac
, result
,
758 instr
->dest
.dest
.ssa
.bit_size
);
762 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
763 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
764 if (ctx
->ac
.chip_class
< GFX9
&&
765 instr
->dest
.dest
.ssa
.bit_size
== 32) {
766 /* Only pre-GFX9 chips do not flush denorms. */
767 result
= ac_build_canonicalize(&ctx
->ac
, result
,
768 instr
->dest
.dest
.ssa
.bit_size
);
772 /* FMA is better on GFX10, because it has FMA units instead of MUL-ADD units. */
773 result
= emit_intrin_3f_param(&ctx
->ac
, ctx
->ac
.chip_class
>= GFX10
? "llvm.fma" : "llvm.fmuladd",
774 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1], src
[2]);
777 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
778 if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 32)
779 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f32", ctx
->ac
.f32
, src
, 2, AC_FUNC_ATTR_READNONE
);
780 else if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 16)
781 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f16", ctx
->ac
.f16
, src
, 2, AC_FUNC_ATTR_READNONE
);
783 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f64", ctx
->ac
.f64
, src
, 2, AC_FUNC_ATTR_READNONE
);
786 result
= emit_bfm(&ctx
->ac
, src
[0], src
[1]);
788 case nir_op_bitfield_select
:
789 result
= emit_bitfield_select(&ctx
->ac
, src
[0], src
[1], src
[2]);
792 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], false);
795 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], true);
797 case nir_op_bitfield_reverse
:
798 result
= ac_build_bitfield_reverse(&ctx
->ac
, src
[0]);
800 case nir_op_bit_count
:
801 result
= ac_build_bit_count(&ctx
->ac
, src
[0]);
806 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
807 src
[i
] = ac_to_integer(&ctx
->ac
, src
[i
]);
808 result
= ac_build_gather_values(&ctx
->ac
, src
, num_components
);
814 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
815 result
= LLVMBuildFPToSI(ctx
->ac
.builder
, src
[0], def_type
, "");
821 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
822 result
= LLVMBuildFPToUI(ctx
->ac
.builder
, src
[0], def_type
, "");
827 result
= LLVMBuildSIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
832 result
= LLVMBuildUIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
834 case nir_op_f2f16_rtz
:
835 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
836 if (LLVMTypeOf(src
[0]) == ctx
->ac
.f64
)
837 src
[0] = LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ctx
->ac
.f32
, "");
838 LLVMValueRef param
[2] = { src
[0], ctx
->ac
.f32_0
};
839 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, param
);
840 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
842 case nir_op_f2f16_rtne
:
846 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
847 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
848 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
850 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
856 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
857 result
= LLVMBuildZExt(ctx
->ac
.builder
, src
[0], def_type
, "");
859 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
865 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
866 result
= LLVMBuildSExt(ctx
->ac
.builder
, src
[0], def_type
, "");
868 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
871 result
= emit_bcsel(&ctx
->ac
, src
[0], src
[1], src
[2]);
873 case nir_op_find_lsb
:
874 result
= ac_find_lsb(&ctx
->ac
, ctx
->ac
.i32
, src
[0]);
876 case nir_op_ufind_msb
:
877 result
= ac_build_umsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
879 case nir_op_ifind_msb
:
880 result
= ac_build_imsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
882 case nir_op_uadd_carry
:
883 result
= emit_uint_carry(&ctx
->ac
, "llvm.uadd.with.overflow.i32", src
[0], src
[1]);
885 case nir_op_usub_borrow
:
886 result
= emit_uint_carry(&ctx
->ac
, "llvm.usub.with.overflow.i32", src
[0], src
[1]);
891 result
= emit_b2f(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
894 result
= emit_f2b(&ctx
->ac
, src
[0]);
900 result
= emit_b2i(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
903 result
= emit_i2b(&ctx
->ac
, src
[0]);
905 case nir_op_fquantize2f16
:
906 result
= emit_f2f16(&ctx
->ac
, src
[0]);
908 case nir_op_umul_high
:
909 result
= emit_umul_high(&ctx
->ac
, src
[0], src
[1]);
911 case nir_op_imul_high
:
912 result
= emit_imul_high(&ctx
->ac
, src
[0], src
[1]);
914 case nir_op_pack_half_2x16
:
915 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pkrtz_f16
);
917 case nir_op_pack_snorm_2x16
:
918 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_i16
);
920 case nir_op_pack_unorm_2x16
:
921 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_u16
);
923 case nir_op_unpack_half_2x16
:
924 result
= emit_unpack_half_2x16(&ctx
->ac
, src
[0]);
928 case nir_op_fddx_fine
:
929 case nir_op_fddy_fine
:
930 case nir_op_fddx_coarse
:
931 case nir_op_fddy_coarse
:
932 result
= emit_ddxy(ctx
, instr
->op
, src
[0]);
935 case nir_op_unpack_64_2x32_split_x
: {
936 assert(ac_get_llvm_num_components(src
[0]) == 1);
937 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
940 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
945 case nir_op_unpack_64_2x32_split_y
: {
946 assert(ac_get_llvm_num_components(src
[0]) == 1);
947 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
950 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
955 case nir_op_pack_64_2x32_split
: {
956 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
957 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i64
, "");
961 case nir_op_pack_32_2x16_split
: {
962 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
963 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
967 case nir_op_unpack_32_2x16_split_x
: {
968 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
971 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
976 case nir_op_unpack_32_2x16_split_y
: {
977 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
980 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
985 case nir_op_cube_face_coord
: {
986 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
987 LLVMValueRef results
[2];
989 for (unsigned chan
= 0; chan
< 3; chan
++)
990 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
991 results
[0] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubesc",
992 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
993 results
[1] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubetc",
994 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
995 LLVMValueRef ma
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubema",
996 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
997 results
[0] = ac_build_fdiv(&ctx
->ac
, results
[0], ma
);
998 results
[1] = ac_build_fdiv(&ctx
->ac
, results
[1], ma
);
999 LLVMValueRef offset
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
1000 results
[0] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[0], offset
, "");
1001 results
[1] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[1], offset
, "");
1002 result
= ac_build_gather_values(&ctx
->ac
, results
, 2);
1006 case nir_op_cube_face_index
: {
1007 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1009 for (unsigned chan
= 0; chan
< 3; chan
++)
1010 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1011 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubeid",
1012 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1017 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1018 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1019 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1020 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1023 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1024 result
= ac_build_umin(&ctx
->ac
, result
, src
[2]);
1027 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1028 result
= ac_build_imin(&ctx
->ac
, result
, src
[2]);
1031 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1032 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1033 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1034 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1037 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1038 result
= ac_build_umax(&ctx
->ac
, result
, src
[2]);
1041 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1042 result
= ac_build_imax(&ctx
->ac
, result
, src
[2]);
1044 case nir_op_fmed3
: {
1045 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1046 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
1047 src
[2] = ac_to_float(&ctx
->ac
, src
[2]);
1048 result
= ac_build_fmed3(&ctx
->ac
, src
[0], src
[1], src
[2],
1049 instr
->dest
.dest
.ssa
.bit_size
);
1052 case nir_op_imed3
: {
1053 LLVMValueRef tmp1
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1054 LLVMValueRef tmp2
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1055 tmp2
= ac_build_imin(&ctx
->ac
, tmp2
, src
[2]);
1056 result
= ac_build_imax(&ctx
->ac
, tmp1
, tmp2
);
1059 case nir_op_umed3
: {
1060 LLVMValueRef tmp1
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1061 LLVMValueRef tmp2
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1062 tmp2
= ac_build_umin(&ctx
->ac
, tmp2
, src
[2]);
1063 result
= ac_build_umax(&ctx
->ac
, tmp1
, tmp2
);
1068 fprintf(stderr
, "Unknown NIR alu instr: ");
1069 nir_print_instr(&instr
->instr
, stderr
);
1070 fprintf(stderr
, "\n");
1075 assert(instr
->dest
.dest
.is_ssa
);
1076 result
= ac_to_integer_or_pointer(&ctx
->ac
, result
);
1077 ctx
->ssa_defs
[instr
->dest
.dest
.ssa
.index
] = result
;
1081 static void visit_load_const(struct ac_nir_context
*ctx
,
1082 const nir_load_const_instr
*instr
)
1084 LLVMValueRef values
[4], value
= NULL
;
1085 LLVMTypeRef element_type
=
1086 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
1088 for (unsigned i
= 0; i
< instr
->def
.num_components
; ++i
) {
1089 switch (instr
->def
.bit_size
) {
1091 values
[i
] = LLVMConstInt(element_type
,
1092 instr
->value
[i
].u8
, false);
1095 values
[i
] = LLVMConstInt(element_type
,
1096 instr
->value
[i
].u16
, false);
1099 values
[i
] = LLVMConstInt(element_type
,
1100 instr
->value
[i
].u32
, false);
1103 values
[i
] = LLVMConstInt(element_type
,
1104 instr
->value
[i
].u64
, false);
1108 "unsupported nir load_const bit_size: %d\n",
1109 instr
->def
.bit_size
);
1113 if (instr
->def
.num_components
> 1) {
1114 value
= LLVMConstVector(values
, instr
->def
.num_components
);
1118 ctx
->ssa_defs
[instr
->def
.index
] = value
;
1122 get_buffer_size(struct ac_nir_context
*ctx
, LLVMValueRef descriptor
, bool in_elements
)
1125 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1126 LLVMConstInt(ctx
->ac
.i32
, 2, false), "");
1129 if (ctx
->ac
.chip_class
== GFX8
&& in_elements
) {
1130 /* On GFX8, the descriptor contains the size in bytes,
1131 * but TXQ must return the size in elements.
1132 * The stride is always non-zero for resources using TXQ.
1134 LLVMValueRef stride
=
1135 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1137 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
,
1138 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
1139 stride
= LLVMBuildAnd(ctx
->ac
.builder
, stride
,
1140 LLVMConstInt(ctx
->ac
.i32
, 0x3fff, false), "");
1142 size
= LLVMBuildUDiv(ctx
->ac
.builder
, size
, stride
, "");
1147 /* Gather4 should follow the same rules as bilinear filtering, but the hardware
1148 * incorrectly forces nearest filtering if the texture format is integer.
1149 * The only effect it has on Gather4, which always returns 4 texels for
1150 * bilinear filtering, is that the final coordinates are off by 0.5 of
1153 * The workaround is to subtract 0.5 from the unnormalized coordinates,
1154 * or (0.5 / size) from the normalized coordinates.
1156 * However, cube textures with 8_8_8_8 data formats require a different
1157 * workaround of overriding the num format to USCALED/SSCALED. This would lose
1158 * precision in 32-bit data formats, so it needs to be applied dynamically at
1159 * runtime. In this case, return an i1 value that indicates whether the
1160 * descriptor was overridden (and hence a fixup of the sampler result is needed).
1162 static LLVMValueRef
lower_gather4_integer(struct ac_llvm_context
*ctx
,
1164 struct ac_image_args
*args
,
1165 const nir_tex_instr
*instr
)
1167 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1168 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1169 LLVMValueRef wa_8888
= NULL
;
1170 LLVMValueRef half_texel
[2];
1171 LLVMValueRef result
;
1173 assert(stype
== GLSL_TYPE_INT
|| stype
== GLSL_TYPE_UINT
);
1175 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1176 LLVMValueRef formats
;
1177 LLVMValueRef data_format
;
1178 LLVMValueRef wa_formats
;
1180 formats
= LLVMBuildExtractElement(ctx
->builder
, args
->resource
, ctx
->i32_1
, "");
1182 data_format
= LLVMBuildLShr(ctx
->builder
, formats
,
1183 LLVMConstInt(ctx
->i32
, 20, false), "");
1184 data_format
= LLVMBuildAnd(ctx
->builder
, data_format
,
1185 LLVMConstInt(ctx
->i32
, (1u << 6) - 1, false), "");
1186 wa_8888
= LLVMBuildICmp(
1187 ctx
->builder
, LLVMIntEQ
, data_format
,
1188 LLVMConstInt(ctx
->i32
, V_008F14_IMG_DATA_FORMAT_8_8_8_8
, false),
1191 uint32_t wa_num_format
=
1192 stype
== GLSL_TYPE_UINT
?
1193 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_USCALED
) :
1194 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_SSCALED
);
1195 wa_formats
= LLVMBuildAnd(ctx
->builder
, formats
,
1196 LLVMConstInt(ctx
->i32
, C_008F14_NUM_FORMAT
, false),
1198 wa_formats
= LLVMBuildOr(ctx
->builder
, wa_formats
,
1199 LLVMConstInt(ctx
->i32
, wa_num_format
, false), "");
1201 formats
= LLVMBuildSelect(ctx
->builder
, wa_8888
, wa_formats
, formats
, "");
1202 args
->resource
= LLVMBuildInsertElement(
1203 ctx
->builder
, args
->resource
, formats
, ctx
->i32_1
, "");
1206 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
) {
1208 half_texel
[0] = half_texel
[1] = LLVMConstReal(ctx
->f32
, -0.5);
1210 struct ac_image_args resinfo
= {};
1211 LLVMBasicBlockRef bbs
[2];
1213 LLVMValueRef unnorm
= NULL
;
1214 LLVMValueRef default_offset
= ctx
->f32_0
;
1215 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
&&
1217 /* In vulkan, whether the sampler uses unnormalized
1218 * coordinates or not is a dynamic property of the
1219 * sampler. Hence, to figure out whether or not we
1220 * need to divide by the texture size, we need to test
1221 * the sampler at runtime. This tests the bit set by
1222 * radv_init_sampler().
1224 LLVMValueRef sampler0
=
1225 LLVMBuildExtractElement(ctx
->builder
, args
->sampler
, ctx
->i32_0
, "");
1226 sampler0
= LLVMBuildLShr(ctx
->builder
, sampler0
,
1227 LLVMConstInt(ctx
->i32
, 15, false), "");
1228 sampler0
= LLVMBuildAnd(ctx
->builder
, sampler0
, ctx
->i32_1
, "");
1229 unnorm
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, sampler0
, ctx
->i32_1
, "");
1230 default_offset
= LLVMConstReal(ctx
->f32
, -0.5);
1233 bbs
[0] = LLVMGetInsertBlock(ctx
->builder
);
1234 if (wa_8888
|| unnorm
) {
1235 assert(!(wa_8888
&& unnorm
));
1236 LLVMValueRef not_needed
= wa_8888
? wa_8888
: unnorm
;
1237 /* Skip the texture size query entirely if we don't need it. */
1238 ac_build_ifcc(ctx
, LLVMBuildNot(ctx
->builder
, not_needed
, ""), 2000);
1239 bbs
[1] = LLVMGetInsertBlock(ctx
->builder
);
1242 /* Query the texture size. */
1243 resinfo
.dim
= ac_get_sampler_dim(ctx
->chip_class
, instr
->sampler_dim
, instr
->is_array
);
1244 resinfo
.opcode
= ac_image_get_resinfo
;
1245 resinfo
.dmask
= 0xf;
1246 resinfo
.lod
= ctx
->i32_0
;
1247 resinfo
.resource
= args
->resource
;
1248 resinfo
.attributes
= AC_FUNC_ATTR_READNONE
;
1249 LLVMValueRef size
= ac_build_image_opcode(ctx
, &resinfo
);
1251 /* Compute -0.5 / size. */
1252 for (unsigned c
= 0; c
< 2; c
++) {
1254 LLVMBuildExtractElement(ctx
->builder
, size
,
1255 LLVMConstInt(ctx
->i32
, c
, 0), "");
1256 half_texel
[c
] = LLVMBuildUIToFP(ctx
->builder
, half_texel
[c
], ctx
->f32
, "");
1257 half_texel
[c
] = ac_build_fdiv(ctx
, ctx
->f32_1
, half_texel
[c
]);
1258 half_texel
[c
] = LLVMBuildFMul(ctx
->builder
, half_texel
[c
],
1259 LLVMConstReal(ctx
->f32
, -0.5), "");
1262 if (wa_8888
|| unnorm
) {
1263 ac_build_endif(ctx
, 2000);
1265 for (unsigned c
= 0; c
< 2; c
++) {
1266 LLVMValueRef values
[2] = { default_offset
, half_texel
[c
] };
1267 half_texel
[c
] = ac_build_phi(ctx
, ctx
->f32
, 2,
1273 for (unsigned c
= 0; c
< 2; c
++) {
1275 tmp
= LLVMBuildBitCast(ctx
->builder
, args
->coords
[c
], ctx
->f32
, "");
1276 args
->coords
[c
] = LLVMBuildFAdd(ctx
->builder
, tmp
, half_texel
[c
], "");
1279 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1280 result
= ac_build_image_opcode(ctx
, args
);
1282 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1283 LLVMValueRef tmp
, tmp2
;
1285 /* if the cube workaround is in place, f2i the result. */
1286 for (unsigned c
= 0; c
< 4; c
++) {
1287 tmp
= LLVMBuildExtractElement(ctx
->builder
, result
, LLVMConstInt(ctx
->i32
, c
, false), "");
1288 if (stype
== GLSL_TYPE_UINT
)
1289 tmp2
= LLVMBuildFPToUI(ctx
->builder
, tmp
, ctx
->i32
, "");
1291 tmp2
= LLVMBuildFPToSI(ctx
->builder
, tmp
, ctx
->i32
, "");
1292 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->i32
, "");
1293 tmp2
= LLVMBuildBitCast(ctx
->builder
, tmp2
, ctx
->i32
, "");
1294 tmp
= LLVMBuildSelect(ctx
->builder
, wa_8888
, tmp2
, tmp
, "");
1295 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f32
, "");
1296 result
= LLVMBuildInsertElement(ctx
->builder
, result
, tmp
, LLVMConstInt(ctx
->i32
, c
, false), "");
1302 static nir_deref_instr
*get_tex_texture_deref(const nir_tex_instr
*instr
)
1304 nir_deref_instr
*texture_deref_instr
= NULL
;
1306 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
1307 switch (instr
->src
[i
].src_type
) {
1308 case nir_tex_src_texture_deref
:
1309 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
1315 return texture_deref_instr
;
1318 static LLVMValueRef
build_tex_intrinsic(struct ac_nir_context
*ctx
,
1319 const nir_tex_instr
*instr
,
1320 struct ac_image_args
*args
)
1322 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
1323 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
1325 return ac_build_buffer_load_format(&ctx
->ac
,
1329 util_last_bit(mask
),
1333 args
->opcode
= ac_image_sample
;
1335 switch (instr
->op
) {
1337 case nir_texop_txf_ms
:
1338 case nir_texop_samples_identical
:
1339 args
->opcode
= args
->level_zero
||
1340 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
?
1341 ac_image_load
: ac_image_load_mip
;
1342 args
->level_zero
= false;
1345 case nir_texop_query_levels
:
1346 args
->opcode
= ac_image_get_resinfo
;
1348 args
->lod
= ctx
->ac
.i32_0
;
1349 args
->level_zero
= false;
1352 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1354 args
->level_zero
= true;
1358 args
->opcode
= ac_image_gather4
;
1359 args
->level_zero
= true;
1362 args
->opcode
= ac_image_get_lod
;
1368 if (instr
->op
== nir_texop_tg4
&& ctx
->ac
.chip_class
<= GFX8
) {
1369 nir_deref_instr
*texture_deref_instr
= get_tex_texture_deref(instr
);
1370 nir_variable
*var
= nir_deref_instr_get_variable(texture_deref_instr
);
1371 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1372 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1373 if (stype
== GLSL_TYPE_UINT
|| stype
== GLSL_TYPE_INT
) {
1374 return lower_gather4_integer(&ctx
->ac
, var
, args
, instr
);
1378 /* Fixup for GFX9 which allocates 1D textures as 2D. */
1379 if (instr
->op
== nir_texop_lod
&& ctx
->ac
.chip_class
== GFX9
) {
1380 if ((args
->dim
== ac_image_2darray
||
1381 args
->dim
== ac_image_2d
) && !args
->coords
[1]) {
1382 args
->coords
[1] = ctx
->ac
.i32_0
;
1386 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1387 bool cs_derivs
= ctx
->stage
== MESA_SHADER_COMPUTE
&&
1388 ctx
->info
->cs
.derivative_group
!= DERIVATIVE_GROUP_NONE
;
1389 if (ctx
->stage
== MESA_SHADER_FRAGMENT
|| cs_derivs
) {
1390 /* Prevent texture instructions with implicit derivatives from being
1391 * sinked into branches. */
1392 switch (instr
->op
) {
1396 args
->attributes
|= AC_FUNC_ATTR_CONVERGENT
;
1403 return ac_build_image_opcode(&ctx
->ac
, args
);
1406 static LLVMValueRef
visit_vulkan_resource_reindex(struct ac_nir_context
*ctx
,
1407 nir_intrinsic_instr
*instr
)
1409 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
1410 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
1412 LLVMValueRef result
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
1413 LLVMSetMetadata(result
, ctx
->ac
.uniform_md_kind
, ctx
->ac
.empty_md
);
1417 static LLVMValueRef
visit_load_push_constant(struct ac_nir_context
*ctx
,
1418 nir_intrinsic_instr
*instr
)
1420 LLVMValueRef ptr
, addr
;
1421 LLVMValueRef src0
= get_src(ctx
, instr
->src
[0]);
1422 unsigned index
= nir_intrinsic_base(instr
);
1424 addr
= LLVMConstInt(ctx
->ac
.i32
, index
, 0);
1425 addr
= LLVMBuildAdd(ctx
->ac
.builder
, addr
, src0
, "");
1427 /* Load constant values from user SGPRS when possible, otherwise
1428 * fallback to the default path that loads directly from memory.
1430 if (LLVMIsConstant(src0
) &&
1431 instr
->dest
.ssa
.bit_size
== 32) {
1432 unsigned count
= instr
->dest
.ssa
.num_components
;
1433 unsigned offset
= index
;
1435 offset
+= LLVMConstIntGetZExtValue(src0
);
1438 offset
-= ctx
->abi
->base_inline_push_consts
;
1440 if (offset
+ count
<= ctx
->abi
->num_inline_push_consts
) {
1441 return ac_build_gather_values(&ctx
->ac
,
1442 ctx
->abi
->inline_push_consts
+ offset
,
1447 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ctx
->abi
->push_constants
, &addr
, 1, "");
1449 if (instr
->dest
.ssa
.bit_size
== 8) {
1450 unsigned load_dwords
= instr
->dest
.ssa
.num_components
> 1 ? 2 : 1;
1451 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), 4 * load_dwords
);
1452 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1453 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1455 LLVMValueRef params
[3];
1456 if (load_dwords
> 1) {
1457 LLVMValueRef res_vec
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(ctx
->ac
.i32
, 2), "");
1458 params
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
1459 params
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 0, false), "");
1461 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, ctx
->ac
.i32
, "");
1462 params
[0] = ctx
->ac
.i32_0
;
1466 res
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.alignbyte", ctx
->ac
.i32
, params
, 3, 0);
1468 res
= LLVMBuildTrunc(ctx
->ac
.builder
, res
, LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.num_components
* 8), "");
1469 if (instr
->dest
.ssa
.num_components
> 1)
1470 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), instr
->dest
.ssa
.num_components
), "");
1472 } else if (instr
->dest
.ssa
.bit_size
== 16) {
1473 unsigned load_dwords
= instr
->dest
.ssa
.num_components
/ 2 + 1;
1474 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt16TypeInContext(ctx
->ac
.context
), 2 * load_dwords
);
1475 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1476 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1477 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, vec_type
, "");
1478 LLVMValueRef cond
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, ctx
->ac
.i32_1
, "");
1479 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->ac
.i1
, "");
1480 LLVMValueRef mask
[] = { LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
1481 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
1482 LLVMConstInt(ctx
->ac
.i32
, 4, false)};
1483 LLVMValueRef swizzle_aligned
= LLVMConstVector(&mask
[0], instr
->dest
.ssa
.num_components
);
1484 LLVMValueRef swizzle_unaligned
= LLVMConstVector(&mask
[1], instr
->dest
.ssa
.num_components
);
1485 LLVMValueRef shuffle_aligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_aligned
, "");
1486 LLVMValueRef shuffle_unaligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_unaligned
, "");
1487 res
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, shuffle_unaligned
, shuffle_aligned
, "");
1488 return LLVMBuildBitCast(ctx
->ac
.builder
, res
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1491 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, get_def_type(ctx
, &instr
->dest
.ssa
));
1493 return LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1496 static LLVMValueRef
visit_get_buffer_size(struct ac_nir_context
*ctx
,
1497 const nir_intrinsic_instr
*instr
)
1499 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
1501 return get_buffer_size(ctx
, ctx
->abi
->load_ssbo(ctx
->abi
, index
, false), false);
1504 static uint32_t widen_mask(uint32_t mask
, unsigned multiplier
)
1506 uint32_t new_mask
= 0;
1507 for(unsigned i
= 0; i
< 32 && (1u << i
) <= mask
; ++i
)
1508 if (mask
& (1u << i
))
1509 new_mask
|= ((1u << multiplier
) - 1u) << (i
* multiplier
);
1513 static LLVMValueRef
extract_vector_range(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
1514 unsigned start
, unsigned count
)
1516 LLVMValueRef mask
[] = {
1517 ctx
->i32_0
, ctx
->i32_1
,
1518 LLVMConstInt(ctx
->i32
, 2, false), LLVMConstInt(ctx
->i32
, 3, false) };
1520 unsigned src_elements
= ac_get_llvm_num_components(src
);
1522 if (count
== src_elements
) {
1525 } else if (count
== 1) {
1526 assert(start
< src_elements
);
1527 return LLVMBuildExtractElement(ctx
->builder
, src
, mask
[start
], "");
1529 assert(start
+ count
<= src_elements
);
1531 LLVMValueRef swizzle
= LLVMConstVector(&mask
[start
], count
);
1532 return LLVMBuildShuffleVector(ctx
->builder
, src
, src
, swizzle
, "");
1536 static unsigned get_cache_policy(struct ac_nir_context
*ctx
,
1537 enum gl_access_qualifier access
,
1538 bool may_store_unaligned
,
1539 bool writeonly_memory
)
1541 unsigned cache_policy
= 0;
1543 /* GFX6 has a TC L1 bug causing corruption of 8bit/16bit stores. All
1544 * store opcodes not aligned to a dword are affected. The only way to
1545 * get unaligned stores is through shader images.
1547 if (((may_store_unaligned
&& ctx
->ac
.chip_class
== GFX6
) ||
1548 /* If this is write-only, don't keep data in L1 to prevent
1549 * evicting L1 cache lines that may be needed by other
1553 access
& (ACCESS_COHERENT
| ACCESS_VOLATILE
))) {
1554 cache_policy
|= ac_glc
;
1557 if (access
& ACCESS_STREAM_CACHE_POLICY
)
1558 cache_policy
|= ac_slc
;
1560 return cache_policy
;
1563 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1564 nir_intrinsic_instr
*instr
)
1566 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1567 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1568 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1569 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1570 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
1571 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, writeonly_memory
);
1573 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1574 get_src(ctx
, instr
->src
[1]), true);
1575 LLVMValueRef base_data
= src_data
;
1576 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1577 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1581 LLVMValueRef data
, offset
;
1582 LLVMTypeRef data_type
;
1584 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1586 /* Due to an LLVM limitation with LLVM < 9, split 3-element
1587 * writes into a 2-element and a 1-element write. */
1589 (elem_size_bytes
!= 4 || !ac_has_vec3_support(ctx
->ac
.chip_class
, false))) {
1590 writemask
|= 1 << (start
+ 2);
1593 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1595 /* we can only store 4 DWords at the same time.
1596 * can only happen for 64 Bit vectors. */
1597 if (num_bytes
> 16) {
1598 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1603 /* check alignment of 16 Bit stores */
1604 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1605 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1609 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1611 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1612 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1614 if (num_bytes
== 1) {
1615 ac_build_tbuffer_store_byte(&ctx
->ac
, rsrc
, data
,
1616 offset
, ctx
->ac
.i32_0
,
1618 } else if (num_bytes
== 2) {
1619 ac_build_tbuffer_store_short(&ctx
->ac
, rsrc
, data
,
1620 offset
, ctx
->ac
.i32_0
,
1623 int num_channels
= num_bytes
/ 4;
1625 switch (num_bytes
) {
1626 case 16: /* v4f32 */
1627 data_type
= ctx
->ac
.v4f32
;
1629 case 12: /* v3f32 */
1630 data_type
= ctx
->ac
.v3f32
;
1633 data_type
= ctx
->ac
.v2f32
;
1636 data_type
= ctx
->ac
.f32
;
1639 unreachable("Malformed vector store.");
1641 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1643 ac_build_buffer_store_dword(&ctx
->ac
, rsrc
, data
,
1644 num_channels
, offset
,
1646 cache_policy
, false);
1651 static LLVMValueRef
emit_ssbo_comp_swap_64(struct ac_nir_context
*ctx
,
1652 LLVMValueRef descriptor
,
1653 LLVMValueRef offset
,
1654 LLVMValueRef compare
,
1655 LLVMValueRef exchange
)
1657 LLVMBasicBlockRef start_block
= NULL
, then_block
= NULL
;
1658 if (ctx
->abi
->robust_buffer_access
) {
1659 LLVMValueRef size
= ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 2);
1661 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
, offset
, size
, "");
1662 start_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1664 ac_build_ifcc(&ctx
->ac
, cond
, -1);
1666 then_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1669 LLVMValueRef ptr_parts
[2] = {
1670 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 0),
1671 LLVMBuildAnd(ctx
->ac
.builder
,
1672 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 1),
1673 LLVMConstInt(ctx
->ac
.i32
, 65535, 0), "")
1676 ptr_parts
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i16
, "");
1677 ptr_parts
[1] = LLVMBuildSExt(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i32
, "");
1679 offset
= LLVMBuildZExt(ctx
->ac
.builder
, offset
, ctx
->ac
.i64
, "");
1681 LLVMValueRef ptr
= ac_build_gather_values(&ctx
->ac
, ptr_parts
, 2);
1682 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ctx
->ac
.i64
, "");
1683 ptr
= LLVMBuildAdd(ctx
->ac
.builder
, ptr
, offset
, "");
1684 ptr
= LLVMBuildIntToPtr(ctx
->ac
.builder
, ptr
, LLVMPointerType(ctx
->ac
.i64
, AC_ADDR_SPACE_GLOBAL
), "");
1686 LLVMValueRef result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, compare
, exchange
, "singlethread-one-as");
1687 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
1689 if (ctx
->abi
->robust_buffer_access
) {
1690 ac_build_endif(&ctx
->ac
, -1);
1692 LLVMBasicBlockRef incoming_blocks
[2] = {
1697 LLVMValueRef incoming_values
[2] = {
1698 LLVMConstInt(ctx
->ac
.i64
, 0, 0),
1701 LLVMValueRef ret
= LLVMBuildPhi(ctx
->ac
.builder
, ctx
->ac
.i64
, "");
1702 LLVMAddIncoming(ret
, incoming_values
, incoming_blocks
, 2);
1709 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1710 const nir_intrinsic_instr
*instr
)
1712 LLVMTypeRef return_type
= LLVMTypeOf(get_src(ctx
, instr
->src
[2]));
1714 char name
[64], type
[8];
1715 LLVMValueRef params
[6], descriptor
;
1718 switch (instr
->intrinsic
) {
1719 case nir_intrinsic_ssbo_atomic_add
:
1722 case nir_intrinsic_ssbo_atomic_imin
:
1725 case nir_intrinsic_ssbo_atomic_umin
:
1728 case nir_intrinsic_ssbo_atomic_imax
:
1731 case nir_intrinsic_ssbo_atomic_umax
:
1734 case nir_intrinsic_ssbo_atomic_and
:
1737 case nir_intrinsic_ssbo_atomic_or
:
1740 case nir_intrinsic_ssbo_atomic_xor
:
1743 case nir_intrinsic_ssbo_atomic_exchange
:
1746 case nir_intrinsic_ssbo_atomic_comp_swap
:
1753 descriptor
= ctx
->abi
->load_ssbo(ctx
->abi
,
1754 get_src(ctx
, instr
->src
[0]),
1757 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
&&
1758 return_type
== ctx
->ac
.i64
) {
1759 return emit_ssbo_comp_swap_64(ctx
, descriptor
,
1760 get_src(ctx
, instr
->src
[1]),
1761 get_src(ctx
, instr
->src
[2]),
1762 get_src(ctx
, instr
->src
[3]));
1764 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1765 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1767 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1768 params
[arg_count
++] = descriptor
;
1770 if (LLVM_VERSION_MAJOR
>= 9) {
1771 /* XXX: The new raw/struct atomic intrinsics are buggy with
1772 * LLVM 8, see r358579.
1774 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1775 params
[arg_count
++] = ctx
->ac
.i32_0
; /* soffset */
1776 params
[arg_count
++] = ctx
->ac
.i32_0
; /* slc */
1778 ac_build_type_name_for_intr(return_type
, type
, sizeof(type
));
1779 snprintf(name
, sizeof(name
),
1780 "llvm.amdgcn.raw.buffer.atomic.%s.%s", op
, type
);
1782 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1783 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1784 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1786 assert(return_type
== ctx
->ac
.i32
);
1787 snprintf(name
, sizeof(name
),
1788 "llvm.amdgcn.buffer.atomic.%s", op
);
1791 return ac_build_intrinsic(&ctx
->ac
, name
, return_type
, params
,
1795 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
1796 const nir_intrinsic_instr
*instr
)
1798 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1799 int num_components
= instr
->num_components
;
1800 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1801 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, false);
1803 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1804 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1805 get_src(ctx
, instr
->src
[0]), false);
1806 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
1808 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1809 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
1811 LLVMValueRef results
[4];
1812 for (int i
= 0; i
< num_components
;) {
1813 int num_elems
= num_components
- i
;
1814 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
1816 if (num_elems
* elem_size_bytes
> 16)
1817 num_elems
= 16 / elem_size_bytes
;
1818 int load_bytes
= num_elems
* elem_size_bytes
;
1820 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
1824 if (load_bytes
== 1) {
1825 ret
= ac_build_tbuffer_load_byte(&ctx
->ac
,
1831 } else if (load_bytes
== 2) {
1832 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
1839 int num_channels
= util_next_power_of_two(load_bytes
) / 4;
1840 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
1842 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_channels
,
1843 vindex
, offset
, immoffset
, 0,
1844 cache_policy
, can_speculate
, false);
1847 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
1848 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
1849 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
1851 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
1852 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
1854 for (unsigned j
= 0; j
< num_elems
; j
++) {
1855 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
1860 return ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1863 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
1864 const nir_intrinsic_instr
*instr
)
1867 LLVMValueRef rsrc
= get_src(ctx
, instr
->src
[0]);
1868 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1869 int num_components
= instr
->num_components
;
1871 if (ctx
->abi
->load_ubo
)
1872 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
1874 if (instr
->dest
.ssa
.bit_size
== 64)
1875 num_components
*= 2;
1877 if (instr
->dest
.ssa
.bit_size
== 16 || instr
->dest
.ssa
.bit_size
== 8) {
1878 unsigned load_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1879 LLVMValueRef results
[num_components
];
1880 for (unsigned i
= 0; i
< num_components
; ++i
) {
1881 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
,
1884 if (load_bytes
== 1) {
1885 results
[i
] = ac_build_tbuffer_load_byte(&ctx
->ac
,
1892 assert(load_bytes
== 2);
1893 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
1901 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1903 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
1904 NULL
, 0, 0, true, true);
1906 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
1909 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
1910 get_def_type(ctx
, &instr
->dest
.ssa
), "");
1914 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
1915 bool vs_in
, unsigned *vertex_index_out
,
1916 LLVMValueRef
*vertex_index_ref
,
1917 unsigned *const_out
, LLVMValueRef
*indir_out
)
1919 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
1920 nir_deref_path path
;
1921 unsigned idx_lvl
= 1;
1923 nir_deref_path_init(&path
, instr
, NULL
);
1925 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
1926 if (vertex_index_ref
) {
1927 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
1928 if (vertex_index_out
)
1929 *vertex_index_out
= 0;
1931 *vertex_index_out
= nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
1936 uint32_t const_offset
= 0;
1937 LLVMValueRef offset
= NULL
;
1939 if (var
->data
.compact
) {
1940 assert(instr
->deref_type
== nir_deref_type_array
);
1941 const_offset
= nir_src_as_uint(instr
->arr
.index
);
1945 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
1946 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
1947 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
1948 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
1950 for (unsigned i
= 0; i
< index
; i
++) {
1951 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
1952 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
1954 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
1955 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
1956 if (nir_src_is_const(path
.path
[idx_lvl
]->arr
.index
)) {
1957 const_offset
+= size
*
1958 nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
1960 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
1961 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
1963 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
1968 unreachable("Uhandled deref type in get_deref_instr_offset");
1972 nir_deref_path_finish(&path
);
1974 if (const_offset
&& offset
)
1975 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
1976 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
1979 *const_out
= const_offset
;
1980 *indir_out
= offset
;
1983 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
1984 nir_intrinsic_instr
*instr
,
1987 LLVMValueRef result
;
1988 LLVMValueRef vertex_index
= NULL
;
1989 LLVMValueRef indir_index
= NULL
;
1990 unsigned const_index
= 0;
1992 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
1994 unsigned location
= var
->data
.location
;
1995 unsigned driver_location
= var
->data
.driver_location
;
1996 const bool is_patch
= var
->data
.patch
;
1997 const bool is_compact
= var
->data
.compact
;
1999 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2000 false, NULL
, is_patch
? NULL
: &vertex_index
,
2001 &const_index
, &indir_index
);
2003 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2005 LLVMTypeRef src_component_type
;
2006 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
2007 src_component_type
= LLVMGetElementType(dest_type
);
2009 src_component_type
= dest_type
;
2011 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
2012 vertex_index
, indir_index
,
2013 const_index
, location
, driver_location
,
2014 var
->data
.location_frac
,
2015 instr
->num_components
,
2016 is_patch
, is_compact
, load_inputs
);
2017 if (instr
->dest
.ssa
.bit_size
== 16) {
2018 result
= ac_to_integer(&ctx
->ac
, result
);
2019 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
2021 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
2025 type_scalar_size_bytes(const struct glsl_type
*type
)
2027 assert(glsl_type_is_vector_or_scalar(type
) ||
2028 glsl_type_is_matrix(type
));
2029 return glsl_type_is_boolean(type
) ? 4 : glsl_get_bit_size(type
) / 8;
2032 static LLVMValueRef
visit_load_var(struct ac_nir_context
*ctx
,
2033 nir_intrinsic_instr
*instr
)
2035 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2036 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2038 LLVMValueRef values
[8];
2040 int ve
= instr
->dest
.ssa
.num_components
;
2042 LLVMValueRef indir_index
;
2044 unsigned const_index
;
2045 unsigned stride
= 4;
2046 int mode
= deref
->mode
;
2049 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
2050 var
->data
.mode
== nir_var_shader_in
;
2051 idx
= var
->data
.driver_location
;
2052 comp
= var
->data
.location_frac
;
2053 mode
= var
->data
.mode
;
2055 get_deref_offset(ctx
, deref
, vs_in
, NULL
, NULL
,
2056 &const_index
, &indir_index
);
2058 if (var
->data
.compact
) {
2060 const_index
+= comp
;
2065 if (instr
->dest
.ssa
.bit_size
== 64 &&
2066 (deref
->mode
== nir_var_shader_in
||
2067 deref
->mode
== nir_var_shader_out
||
2068 deref
->mode
== nir_var_function_temp
))
2072 case nir_var_shader_in
:
2073 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
2074 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
2075 return load_tess_varyings(ctx
, instr
, true);
2078 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
2079 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
2080 LLVMValueRef indir_index
;
2081 unsigned const_index
, vertex_index
;
2082 get_deref_offset(ctx
, deref
, false, &vertex_index
, NULL
,
2083 &const_index
, &indir_index
);
2084 assert(indir_index
== NULL
);
2086 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
2087 var
->data
.driver_location
,
2088 var
->data
.location_frac
,
2089 instr
->num_components
, vertex_index
, const_index
, type
);
2092 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2094 unsigned count
= glsl_count_attribute_slots(
2096 ctx
->stage
== MESA_SHADER_VERTEX
);
2098 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2099 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
2100 stride
, false, true);
2102 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2106 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
2109 case nir_var_function_temp
:
2110 for (unsigned chan
= 0; chan
< ve
; chan
++) {
2112 unsigned count
= glsl_count_attribute_slots(
2115 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2116 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2117 stride
, true, true);
2119 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2123 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
2127 case nir_var_mem_shared
: {
2128 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2129 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2130 return LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2131 get_def_type(ctx
, &instr
->dest
.ssa
),
2134 case nir_var_shader_out
:
2135 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2136 return load_tess_varyings(ctx
, instr
, false);
2139 if (ctx
->stage
== MESA_SHADER_FRAGMENT
&&
2140 var
->data
.fb_fetch_output
&&
2141 ctx
->abi
->emit_fbfetch
)
2142 return ctx
->abi
->emit_fbfetch(ctx
->abi
);
2144 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2146 unsigned count
= glsl_count_attribute_slots(
2149 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2150 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2151 stride
, true, true);
2153 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2157 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
2158 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
2163 case nir_var_mem_global
: {
2164 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2165 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2166 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2167 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2169 LLVMTypeRef result_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2170 if (stride
!= natural_stride
) {
2171 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(result_type
),
2172 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2173 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2175 for (unsigned i
= 0; i
< instr
->dest
.ssa
.num_components
; ++i
) {
2176 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, i
* stride
/ natural_stride
, 0);
2177 values
[i
] = LLVMBuildLoad(ctx
->ac
.builder
,
2178 ac_build_gep_ptr(&ctx
->ac
, address
, offset
), "");
2180 return ac_build_gather_values(&ctx
->ac
, values
, instr
->dest
.ssa
.num_components
);
2182 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2183 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2184 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2185 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2190 unreachable("unhandle variable mode");
2192 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
2193 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2197 visit_store_var(struct ac_nir_context
*ctx
,
2198 nir_intrinsic_instr
*instr
)
2200 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2201 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2203 LLVMValueRef temp_ptr
, value
;
2206 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
2207 int writemask
= instr
->const_index
[0];
2208 LLVMValueRef indir_index
;
2209 unsigned const_index
;
2212 get_deref_offset(ctx
, deref
, false,
2213 NULL
, NULL
, &const_index
, &indir_index
);
2214 idx
= var
->data
.driver_location
;
2215 comp
= var
->data
.location_frac
;
2217 if (var
->data
.compact
) {
2218 const_index
+= comp
;
2223 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64 &&
2224 (deref
->mode
== nir_var_shader_out
||
2225 deref
->mode
== nir_var_function_temp
)) {
2227 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2228 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2231 writemask
= widen_mask(writemask
, 2);
2234 writemask
= writemask
<< comp
;
2236 switch (deref
->mode
) {
2237 case nir_var_shader_out
:
2239 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2240 LLVMValueRef vertex_index
= NULL
;
2241 LLVMValueRef indir_index
= NULL
;
2242 unsigned const_index
= 0;
2243 const bool is_patch
= var
->data
.patch
;
2245 get_deref_offset(ctx
, deref
, false, NULL
,
2246 is_patch
? NULL
: &vertex_index
,
2247 &const_index
, &indir_index
);
2249 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2250 vertex_index
, indir_index
,
2251 const_index
, src
, writemask
);
2255 for (unsigned chan
= 0; chan
< 8; chan
++) {
2257 if (!(writemask
& (1 << chan
)))
2260 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2262 if (var
->data
.compact
)
2265 unsigned count
= glsl_count_attribute_slots(
2268 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2269 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2270 stride
, true, true);
2272 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2273 value
, indir_index
, "");
2274 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2275 count
, stride
, tmp_vec
);
2278 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2280 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2284 case nir_var_function_temp
:
2285 for (unsigned chan
= 0; chan
< 8; chan
++) {
2286 if (!(writemask
& (1 << chan
)))
2289 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2291 unsigned count
= glsl_count_attribute_slots(
2294 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2295 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2298 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2299 value
, indir_index
, "");
2300 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2303 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2305 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2310 case nir_var_mem_global
:
2311 case nir_var_mem_shared
: {
2312 int writemask
= instr
->const_index
[0];
2313 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2314 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2316 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2317 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2318 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2320 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2321 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2322 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2324 if (writemask
== (1u << ac_get_llvm_num_components(val
)) - 1 &&
2325 stride
== natural_stride
) {
2326 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2327 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2328 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2330 val
= LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2331 LLVMGetElementType(LLVMTypeOf(address
)), "");
2332 LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2334 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(LLVMTypeOf(val
)),
2335 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2336 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2337 for (unsigned chan
= 0; chan
< 4; chan
++) {
2338 if (!(writemask
& (1 << chan
)))
2341 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, chan
* stride
/ natural_stride
, 0);
2343 LLVMValueRef ptr
= ac_build_gep_ptr(&ctx
->ac
, address
, offset
);
2344 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2346 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2347 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2348 LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2359 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2362 case GLSL_SAMPLER_DIM_BUF
:
2364 case GLSL_SAMPLER_DIM_1D
:
2365 return array
? 2 : 1;
2366 case GLSL_SAMPLER_DIM_2D
:
2367 return array
? 3 : 2;
2368 case GLSL_SAMPLER_DIM_MS
:
2369 return array
? 4 : 3;
2370 case GLSL_SAMPLER_DIM_3D
:
2371 case GLSL_SAMPLER_DIM_CUBE
:
2373 case GLSL_SAMPLER_DIM_RECT
:
2374 case GLSL_SAMPLER_DIM_SUBPASS
:
2376 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2384 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2385 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2386 LLVMValueRef coord_z
,
2387 LLVMValueRef sample_index
,
2388 LLVMValueRef fmask_desc_ptr
)
2390 unsigned sample_chan
= coord_z
? 3 : 2;
2391 LLVMValueRef addr
[4] = {coord_x
, coord_y
, coord_z
};
2392 addr
[sample_chan
] = sample_index
;
2394 ac_apply_fmask_to_sample(ctx
, fmask_desc_ptr
, addr
, coord_z
!= NULL
);
2395 return addr
[sample_chan
];
2398 static nir_deref_instr
*get_image_deref(const nir_intrinsic_instr
*instr
)
2400 assert(instr
->src
[0].is_ssa
);
2401 return nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2404 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2405 const nir_intrinsic_instr
*instr
,
2406 enum ac_descriptor_type desc_type
,
2409 nir_deref_instr
*deref_instr
=
2410 instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
?
2411 nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
) : NULL
;
2413 return get_sampler_desc(ctx
, deref_instr
, desc_type
, &instr
->instr
, true, write
);
2416 static void get_image_coords(struct ac_nir_context
*ctx
,
2417 const nir_intrinsic_instr
*instr
,
2418 struct ac_image_args
*args
,
2419 enum glsl_sampler_dim dim
,
2422 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2423 LLVMValueRef masks
[] = {
2424 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2425 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2427 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2430 ASSERTED
bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2431 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2432 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2433 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2434 bool gfx9_1d
= ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2435 assert(!add_frag_pos
&& "Input attachments should be lowered by this point.");
2436 count
= image_type_to_components_count(dim
, is_array
);
2438 if (is_ms
&& (instr
->intrinsic
== nir_intrinsic_image_deref_load
||
2439 instr
->intrinsic
== nir_intrinsic_bindless_image_load
)) {
2440 LLVMValueRef fmask_load_address
[3];
2442 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2443 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2445 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2447 fmask_load_address
[2] = NULL
;
2449 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2450 fmask_load_address
[0],
2451 fmask_load_address
[1],
2452 fmask_load_address
[2],
2454 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2455 AC_DESC_FMASK
, &instr
->instr
, true, false));
2457 if (count
== 1 && !gfx9_1d
) {
2458 if (instr
->src
[1].ssa
->num_components
)
2459 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2461 args
->coords
[0] = src0
;
2466 for (chan
= 0; chan
< count
; ++chan
) {
2467 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2472 args
->coords
[2] = args
->coords
[1];
2473 args
->coords
[1] = ctx
->ac
.i32_0
;
2475 args
->coords
[1] = ctx
->ac
.i32_0
;
2478 if (ctx
->ac
.chip_class
== GFX9
&&
2479 dim
== GLSL_SAMPLER_DIM_2D
&&
2481 /* The hw can't bind a slice of a 3D image as a 2D
2482 * image, because it ignores BASE_ARRAY if the target
2483 * is 3D. The workaround is to read BASE_ARRAY and set
2484 * it as the 3rd address operand for all 2D images.
2486 LLVMValueRef first_layer
, const5
, mask
;
2488 const5
= LLVMConstInt(ctx
->ac
.i32
, 5, 0);
2489 mask
= LLVMConstInt(ctx
->ac
.i32
, S_008F24_BASE_ARRAY(~0), 0);
2490 first_layer
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
->resource
, const5
, "");
2491 first_layer
= LLVMBuildAnd(ctx
->ac
.builder
, first_layer
, mask
, "");
2493 args
->coords
[count
] = first_layer
;
2499 args
->coords
[count
] = sample_index
;
2505 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2506 const nir_intrinsic_instr
*instr
,
2507 bool write
, bool atomic
)
2509 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, write
);
2510 if (ctx
->ac
.chip_class
== GFX9
&& LLVM_VERSION_MAJOR
< 9 && atomic
) {
2511 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2512 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2513 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2515 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2516 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2517 elem_count
, stride
, "");
2519 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2520 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2525 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2526 const nir_intrinsic_instr
*instr
,
2531 enum glsl_sampler_dim dim
;
2532 enum gl_access_qualifier access
;
2535 dim
= nir_intrinsic_image_dim(instr
);
2536 access
= nir_intrinsic_access(instr
);
2537 is_array
= nir_intrinsic_image_array(instr
);
2539 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2540 const struct glsl_type
*type
= image_deref
->type
;
2541 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2542 dim
= glsl_get_sampler_dim(type
);
2543 access
= var
->data
.image
.access
;
2544 is_array
= glsl_sampler_type_is_array(type
);
2547 struct ac_image_args args
= {};
2549 args
.cache_policy
= get_cache_policy(ctx
, access
, false, false);
2551 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2552 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2553 unsigned num_channels
= util_last_bit(mask
);
2554 LLVMValueRef rsrc
, vindex
;
2556 rsrc
= get_image_buffer_descriptor(ctx
, instr
, false, false);
2557 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2560 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2561 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2562 ctx
->ac
.i32_0
, num_channels
,
2565 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2567 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2568 res
= ac_to_integer(&ctx
->ac
, res
);
2570 args
.opcode
= ac_image_load
;
2571 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2572 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2573 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2575 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2577 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2582 static void visit_image_store(struct ac_nir_context
*ctx
,
2583 nir_intrinsic_instr
*instr
,
2588 enum glsl_sampler_dim dim
;
2589 enum gl_access_qualifier access
;
2592 dim
= nir_intrinsic_image_dim(instr
);
2593 access
= nir_intrinsic_access(instr
);
2594 is_array
= nir_intrinsic_image_array(instr
);
2596 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2597 const struct glsl_type
*type
= image_deref
->type
;
2598 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2599 dim
= glsl_get_sampler_dim(type
);
2600 access
= var
->data
.image
.access
;
2601 is_array
= glsl_sampler_type_is_array(type
);
2604 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
2605 struct ac_image_args args
= {};
2607 args
.cache_policy
= get_cache_policy(ctx
, access
, true, writeonly_memory
);
2609 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2610 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, true, false);
2611 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2612 unsigned src_channels
= ac_get_llvm_num_components(src
);
2613 LLVMValueRef vindex
;
2615 if (src_channels
== 3)
2616 src
= ac_build_expand_to_vec4(&ctx
->ac
, src
, 3);
2618 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2619 get_src(ctx
, instr
->src
[1]),
2622 ac_build_buffer_store_format(&ctx
->ac
, rsrc
, src
, vindex
,
2623 ctx
->ac
.i32_0
, src_channels
,
2626 args
.opcode
= ac_image_store
;
2627 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2628 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2629 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2630 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2633 ac_build_image_opcode(&ctx
->ac
, &args
);
2638 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2639 const nir_intrinsic_instr
*instr
,
2642 LLVMValueRef params
[7];
2643 int param_count
= 0;
2645 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
||
2646 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_comp_swap
;
2647 const char *atomic_name
;
2648 char intrinsic_name
[64];
2649 enum ac_atomic_op atomic_subop
;
2650 ASSERTED
int length
;
2652 enum glsl_sampler_dim dim
;
2655 if (instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imin
||
2656 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umin
||
2657 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imax
||
2658 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umax
) {
2659 ASSERTED
const GLenum format
= nir_intrinsic_format(instr
);
2660 assert(format
== GL_R32UI
|| format
== GL_R32I
);
2662 dim
= nir_intrinsic_image_dim(instr
);
2663 is_array
= nir_intrinsic_image_array(instr
);
2665 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2666 dim
= glsl_get_sampler_dim(type
);
2667 is_array
= glsl_sampler_type_is_array(type
);
2670 switch (instr
->intrinsic
) {
2671 case nir_intrinsic_bindless_image_atomic_add
:
2672 case nir_intrinsic_image_deref_atomic_add
:
2673 atomic_name
= "add";
2674 atomic_subop
= ac_atomic_add
;
2676 case nir_intrinsic_bindless_image_atomic_imin
:
2677 case nir_intrinsic_image_deref_atomic_imin
:
2678 atomic_name
= "smin";
2679 atomic_subop
= ac_atomic_smin
;
2681 case nir_intrinsic_bindless_image_atomic_umin
:
2682 case nir_intrinsic_image_deref_atomic_umin
:
2683 atomic_name
= "umin";
2684 atomic_subop
= ac_atomic_umin
;
2686 case nir_intrinsic_bindless_image_atomic_imax
:
2687 case nir_intrinsic_image_deref_atomic_imax
:
2688 atomic_name
= "smax";
2689 atomic_subop
= ac_atomic_smax
;
2691 case nir_intrinsic_bindless_image_atomic_umax
:
2692 case nir_intrinsic_image_deref_atomic_umax
:
2693 atomic_name
= "umax";
2694 atomic_subop
= ac_atomic_umax
;
2696 case nir_intrinsic_bindless_image_atomic_and
:
2697 case nir_intrinsic_image_deref_atomic_and
:
2698 atomic_name
= "and";
2699 atomic_subop
= ac_atomic_and
;
2701 case nir_intrinsic_bindless_image_atomic_or
:
2702 case nir_intrinsic_image_deref_atomic_or
:
2704 atomic_subop
= ac_atomic_or
;
2706 case nir_intrinsic_bindless_image_atomic_xor
:
2707 case nir_intrinsic_image_deref_atomic_xor
:
2708 atomic_name
= "xor";
2709 atomic_subop
= ac_atomic_xor
;
2711 case nir_intrinsic_bindless_image_atomic_exchange
:
2712 case nir_intrinsic_image_deref_atomic_exchange
:
2713 atomic_name
= "swap";
2714 atomic_subop
= ac_atomic_swap
;
2716 case nir_intrinsic_bindless_image_atomic_comp_swap
:
2717 case nir_intrinsic_image_deref_atomic_comp_swap
:
2718 atomic_name
= "cmpswap";
2719 atomic_subop
= 0; /* not used */
2721 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
2722 case nir_intrinsic_image_deref_atomic_inc_wrap
: {
2723 atomic_name
= "inc";
2724 atomic_subop
= ac_atomic_inc_wrap
;
2725 /* ATOMIC_INC instruction does:
2726 * value = (value + 1) % (data + 1)
2728 * value = (value + 1) % data
2729 * So replace 'data' by 'data - 1'.
2731 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
] =
2732 LLVMBuildSub(ctx
->ac
.builder
,
2733 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
],
2737 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
2738 case nir_intrinsic_image_deref_atomic_dec_wrap
:
2739 atomic_name
= "dec";
2740 atomic_subop
= ac_atomic_dec_wrap
;
2747 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
2748 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
2750 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2751 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, true, true);
2752 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2753 ctx
->ac
.i32_0
, ""); /* vindex */
2754 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
2755 if (LLVM_VERSION_MAJOR
>= 9) {
2756 /* XXX: The new raw/struct atomic intrinsics are buggy
2757 * with LLVM 8, see r358579.
2759 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
2760 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
2762 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2763 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
2765 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
2767 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2768 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
2771 assert(length
< sizeof(intrinsic_name
));
2772 return ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
2773 params
, param_count
, 0);
2775 struct ac_image_args args
= {};
2776 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
2777 args
.atomic
= atomic_subop
;
2778 args
.data
[0] = params
[0];
2780 args
.data
[1] = params
[1];
2781 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2782 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2783 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2785 return ac_build_image_opcode(&ctx
->ac
, &args
);
2789 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
2790 const nir_intrinsic_instr
*instr
)
2792 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2794 return ac_build_image_get_sample_count(&ctx
->ac
, rsrc
);
2797 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
2798 const nir_intrinsic_instr
*instr
,
2803 enum glsl_sampler_dim dim
;
2806 dim
= nir_intrinsic_image_dim(instr
);
2807 is_array
= nir_intrinsic_image_array(instr
);
2809 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2810 dim
= glsl_get_sampler_dim(type
);
2811 is_array
= glsl_sampler_type_is_array(type
);
2814 if (dim
== GLSL_SAMPLER_DIM_BUF
)
2815 return get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, false), true);
2817 struct ac_image_args args
= { 0 };
2819 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2821 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2822 args
.opcode
= ac_image_get_resinfo
;
2823 args
.lod
= ctx
->ac
.i32_0
;
2824 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2826 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2828 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
2830 if (dim
== GLSL_SAMPLER_DIM_CUBE
&& is_array
) {
2831 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
2832 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2833 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
2834 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
2836 if (ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
&& is_array
) {
2837 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2838 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
2845 static void emit_membar(struct ac_llvm_context
*ac
,
2846 const nir_intrinsic_instr
*instr
)
2848 unsigned wait_flags
= 0;
2850 switch (instr
->intrinsic
) {
2851 case nir_intrinsic_memory_barrier
:
2852 case nir_intrinsic_group_memory_barrier
:
2853 wait_flags
= AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
2855 case nir_intrinsic_memory_barrier_atomic_counter
:
2856 case nir_intrinsic_memory_barrier_buffer
:
2857 case nir_intrinsic_memory_barrier_image
:
2858 wait_flags
= AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
2860 case nir_intrinsic_memory_barrier_shared
:
2861 wait_flags
= AC_WAIT_LGKM
;
2867 ac_build_waitcnt(ac
, wait_flags
);
2870 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
2872 /* GFX6 only (thanks to a hw bug workaround):
2873 * The real barrier instruction isn’t needed, because an entire patch
2874 * always fits into a single wave.
2876 if (ac
->chip_class
== GFX6
&& stage
== MESA_SHADER_TESS_CTRL
) {
2877 ac_build_waitcnt(ac
, AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
);
2880 ac_build_s_barrier(ac
);
2883 static void emit_discard(struct ac_nir_context
*ctx
,
2884 const nir_intrinsic_instr
*instr
)
2888 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
2889 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2890 get_src(ctx
, instr
->src
[0]),
2893 assert(instr
->intrinsic
== nir_intrinsic_discard
);
2894 cond
= ctx
->ac
.i1false
;
2897 ctx
->abi
->emit_kill(ctx
->abi
, cond
);
2901 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
2903 LLVMValueRef result
;
2904 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
2905 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2906 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2908 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
2912 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
2914 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2915 LLVMValueRef result
;
2916 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2917 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2918 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
2920 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
2925 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
2927 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2928 return LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2929 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
2931 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
2936 visit_first_invocation(struct ac_nir_context
*ctx
)
2938 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
2939 const char *intr
= ctx
->ac
.wave_size
== 32 ? "llvm.cttz.i32" : "llvm.cttz.i64";
2941 /* The second argument is whether cttz(0) should be defined, but we do not care. */
2942 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
2943 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
, intr
,
2944 ctx
->ac
.iN_wavemask
, args
, 2,
2945 AC_FUNC_ATTR_NOUNWIND
|
2946 AC_FUNC_ATTR_READNONE
);
2948 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
2952 visit_load_shared(struct ac_nir_context
*ctx
,
2953 const nir_intrinsic_instr
*instr
)
2955 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
2957 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
2959 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
2960 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2961 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
2962 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
2965 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
2966 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2970 visit_store_shared(struct ac_nir_context
*ctx
,
2971 const nir_intrinsic_instr
*instr
)
2973 LLVMValueRef derived_ptr
, data
,index
;
2974 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2976 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1]);
2977 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
2979 int writemask
= nir_intrinsic_write_mask(instr
);
2980 for (int chan
= 0; chan
< 4; chan
++) {
2981 if (!(writemask
& (1 << chan
))) {
2984 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2985 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2986 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
2987 LLVMBuildStore(builder
, data
, derived_ptr
);
2991 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
2992 const nir_intrinsic_instr
*instr
,
2993 LLVMValueRef ptr
, int src_idx
)
2995 LLVMValueRef result
;
2996 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
2998 const char *sync_scope
= LLVM_VERSION_MAJOR
>= 9 ? "workgroup-one-as" : "workgroup";
3000 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
3001 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
3002 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
3003 result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, src
, src1
, sync_scope
);
3004 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
3006 LLVMAtomicRMWBinOp op
;
3007 switch (instr
->intrinsic
) {
3008 case nir_intrinsic_shared_atomic_add
:
3009 case nir_intrinsic_deref_atomic_add
:
3010 op
= LLVMAtomicRMWBinOpAdd
;
3012 case nir_intrinsic_shared_atomic_umin
:
3013 case nir_intrinsic_deref_atomic_umin
:
3014 op
= LLVMAtomicRMWBinOpUMin
;
3016 case nir_intrinsic_shared_atomic_umax
:
3017 case nir_intrinsic_deref_atomic_umax
:
3018 op
= LLVMAtomicRMWBinOpUMax
;
3020 case nir_intrinsic_shared_atomic_imin
:
3021 case nir_intrinsic_deref_atomic_imin
:
3022 op
= LLVMAtomicRMWBinOpMin
;
3024 case nir_intrinsic_shared_atomic_imax
:
3025 case nir_intrinsic_deref_atomic_imax
:
3026 op
= LLVMAtomicRMWBinOpMax
;
3028 case nir_intrinsic_shared_atomic_and
:
3029 case nir_intrinsic_deref_atomic_and
:
3030 op
= LLVMAtomicRMWBinOpAnd
;
3032 case nir_intrinsic_shared_atomic_or
:
3033 case nir_intrinsic_deref_atomic_or
:
3034 op
= LLVMAtomicRMWBinOpOr
;
3036 case nir_intrinsic_shared_atomic_xor
:
3037 case nir_intrinsic_deref_atomic_xor
:
3038 op
= LLVMAtomicRMWBinOpXor
;
3040 case nir_intrinsic_shared_atomic_exchange
:
3041 case nir_intrinsic_deref_atomic_exchange
:
3042 op
= LLVMAtomicRMWBinOpXchg
;
3048 result
= ac_build_atomic_rmw(&ctx
->ac
, op
, ptr
, ac_to_integer(&ctx
->ac
, src
), sync_scope
);
3053 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
3055 LLVMValueRef values
[2];
3056 LLVMValueRef pos
[2];
3058 pos
[0] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[0]);
3059 pos
[1] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[1]);
3061 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
3062 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
3063 return ac_build_gather_values(&ctx
->ac
, values
, 2);
3066 static LLVMValueRef
lookup_interp_param(struct ac_nir_context
*ctx
,
3067 enum glsl_interp_mode interp
, unsigned location
)
3070 case INTERP_MODE_FLAT
:
3073 case INTERP_MODE_SMOOTH
:
3074 case INTERP_MODE_NONE
:
3075 if (location
== INTERP_CENTER
)
3076 return ctx
->abi
->persp_center
;
3077 else if (location
== INTERP_CENTROID
)
3078 return ctx
->abi
->persp_centroid
;
3079 else if (location
== INTERP_SAMPLE
)
3080 return ctx
->abi
->persp_sample
;
3082 case INTERP_MODE_NOPERSPECTIVE
:
3083 if (location
== INTERP_CENTER
)
3084 return ctx
->abi
->linear_center
;
3085 else if (location
== INTERP_CENTROID
)
3086 return ctx
->abi
->linear_centroid
;
3087 else if (location
== INTERP_SAMPLE
)
3088 return ctx
->abi
->linear_sample
;
3094 static LLVMValueRef
barycentric_center(struct ac_nir_context
*ctx
,
3097 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3098 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3101 static LLVMValueRef
barycentric_offset(struct ac_nir_context
*ctx
,
3103 LLVMValueRef offset
)
3105 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3106 LLVMValueRef src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_0
, ""));
3107 LLVMValueRef src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_1
, ""));
3109 LLVMValueRef ij_out
[2];
3110 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
3113 * take the I then J parameters, and the DDX/Y for it, and
3114 * calculate the IJ inputs for the interpolator.
3115 * temp1 = ddx * offset/sample.x + I;
3116 * interp_param.I = ddy * offset/sample.y + temp1;
3117 * temp1 = ddx * offset/sample.x + J;
3118 * interp_param.J = ddy * offset/sample.y + temp1;
3120 for (unsigned i
= 0; i
< 2; i
++) {
3121 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
3122 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
3123 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3124 ddxy_out
, ix_ll
, "");
3125 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3126 ddxy_out
, iy_ll
, "");
3127 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3128 interp_param
, ix_ll
, "");
3129 LLVMValueRef temp1
, temp2
;
3131 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
3134 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
3135 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
3137 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
3138 temp2
, ctx
->ac
.i32
, "");
3140 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
3141 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3144 static LLVMValueRef
barycentric_centroid(struct ac_nir_context
*ctx
,
3147 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTROID
);
3148 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3151 static LLVMValueRef
barycentric_at_sample(struct ac_nir_context
*ctx
,
3153 LLVMValueRef sample_id
)
3155 if (ctx
->abi
->interp_at_sample_force_center
)
3156 return barycentric_center(ctx
, mode
);
3158 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
3160 /* fetch sample ID */
3161 LLVMValueRef sample_pos
= ctx
->abi
->load_sample_position(ctx
->abi
, sample_id
);
3163 LLVMValueRef src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_0
, "");
3164 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
3165 LLVMValueRef src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_1
, "");
3166 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
3167 LLVMValueRef coords
[] = { src_c0
, src_c1
};
3168 LLVMValueRef offset
= ac_build_gather_values(&ctx
->ac
, coords
, 2);
3170 return barycentric_offset(ctx
, mode
, offset
);
3174 static LLVMValueRef
barycentric_sample(struct ac_nir_context
*ctx
,
3177 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_SAMPLE
);
3178 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3181 static LLVMValueRef
load_interpolated_input(struct ac_nir_context
*ctx
,
3182 LLVMValueRef interp_param
,
3183 unsigned index
, unsigned comp_start
,
3184 unsigned num_components
,
3187 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3189 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
,
3190 interp_param
, ctx
->ac
.v2f32
, "");
3191 LLVMValueRef i
= LLVMBuildExtractElement(
3192 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_0
, "");
3193 LLVMValueRef j
= LLVMBuildExtractElement(
3194 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_1
, "");
3196 LLVMValueRef values
[4];
3197 assert(bitsize
== 16 || bitsize
== 32);
3198 for (unsigned comp
= 0; comp
< num_components
; comp
++) {
3199 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, comp_start
+ comp
, false);
3200 if (bitsize
== 16) {
3201 values
[comp
] = ac_build_fs_interp_f16(&ctx
->ac
, llvm_chan
, attr_number
,
3202 ctx
->abi
->prim_mask
, i
, j
);
3204 values
[comp
] = ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3205 ctx
->abi
->prim_mask
, i
, j
);
3209 return ac_to_integer(&ctx
->ac
, ac_build_gather_values(&ctx
->ac
, values
, num_components
));
3212 static LLVMValueRef
load_flat_input(struct ac_nir_context
*ctx
,
3213 unsigned index
, unsigned comp_start
,
3214 unsigned num_components
,
3217 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3219 LLVMValueRef values
[8];
3221 /* Each component of a 64-bit value takes up two GL-level channels. */
3223 bit_size
== 64 ? num_components
* 2 : num_components
;
3225 for (unsigned chan
= 0; chan
< channels
; chan
++) {
3226 if (comp_start
+ chan
> 4)
3227 attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
+ 1, false);
3228 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, (comp_start
+ chan
) % 4, false);
3229 values
[chan
] = ac_build_fs_interp_mov(&ctx
->ac
,
3230 LLVMConstInt(ctx
->ac
.i32
, 2, false),
3233 ctx
->abi
->prim_mask
);
3234 values
[chan
] = LLVMBuildBitCast(ctx
->ac
.builder
, values
[chan
], ctx
->ac
.i32
, "");
3235 values
[chan
] = LLVMBuildTruncOrBitCast(ctx
->ac
.builder
, values
[chan
],
3236 bit_size
== 16 ? ctx
->ac
.i16
: ctx
->ac
.i32
, "");
3239 LLVMValueRef result
= ac_build_gather_values(&ctx
->ac
, values
, channels
);
3240 if (bit_size
== 64) {
3241 LLVMTypeRef type
= num_components
== 1 ? ctx
->ac
.i64
:
3242 LLVMVectorType(ctx
->ac
.i64
, num_components
);
3243 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
, type
, "");
3248 static void visit_intrinsic(struct ac_nir_context
*ctx
,
3249 nir_intrinsic_instr
*instr
)
3251 LLVMValueRef result
= NULL
;
3253 switch (instr
->intrinsic
) {
3254 case nir_intrinsic_ballot
:
3255 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3256 if (ctx
->ac
.ballot_mask_bits
> ctx
->ac
.wave_size
)
3257 result
= LLVMBuildZExt(ctx
->ac
.builder
, result
, ctx
->ac
.iN_ballotmask
, "");
3259 case nir_intrinsic_read_invocation
:
3260 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3261 get_src(ctx
, instr
->src
[1]));
3263 case nir_intrinsic_read_first_invocation
:
3264 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
3266 case nir_intrinsic_load_subgroup_invocation
:
3267 result
= ac_get_thread_id(&ctx
->ac
);
3269 case nir_intrinsic_load_work_group_id
: {
3270 LLVMValueRef values
[3];
3272 for (int i
= 0; i
< 3; i
++) {
3273 values
[i
] = ctx
->abi
->workgroup_ids
[i
] ?
3274 ctx
->abi
->workgroup_ids
[i
] : ctx
->ac
.i32_0
;
3277 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
3280 case nir_intrinsic_load_base_vertex
:
3281 case nir_intrinsic_load_first_vertex
:
3282 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
3284 case nir_intrinsic_load_local_group_size
:
3285 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
3287 case nir_intrinsic_load_vertex_id
:
3288 result
= LLVMBuildAdd(ctx
->ac
.builder
, ctx
->abi
->vertex_id
,
3289 ctx
->abi
->base_vertex
, "");
3291 case nir_intrinsic_load_vertex_id_zero_base
: {
3292 result
= ctx
->abi
->vertex_id
;
3295 case nir_intrinsic_load_local_invocation_id
: {
3296 result
= ctx
->abi
->local_invocation_ids
;
3299 case nir_intrinsic_load_base_instance
:
3300 result
= ctx
->abi
->start_instance
;
3302 case nir_intrinsic_load_draw_id
:
3303 result
= ctx
->abi
->draw_id
;
3305 case nir_intrinsic_load_view_index
:
3306 result
= ctx
->abi
->view_index
;
3308 case nir_intrinsic_load_invocation_id
:
3309 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3310 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->tcs_rel_ids
, 8, 5);
3312 if (ctx
->ac
.chip_class
>= GFX10
) {
3313 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3314 ctx
->abi
->gs_invocation_id
,
3315 LLVMConstInt(ctx
->ac
.i32
, 127, 0), "");
3317 result
= ctx
->abi
->gs_invocation_id
;
3321 case nir_intrinsic_load_primitive_id
:
3322 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3323 result
= ctx
->abi
->gs_prim_id
;
3324 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3325 result
= ctx
->abi
->tcs_patch_id
;
3326 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3327 result
= ctx
->abi
->tes_patch_id
;
3329 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3331 case nir_intrinsic_load_sample_id
:
3332 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->ancillary
, 8, 4);
3334 case nir_intrinsic_load_sample_pos
:
3335 result
= load_sample_pos(ctx
);
3337 case nir_intrinsic_load_sample_mask_in
:
3338 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3340 case nir_intrinsic_load_frag_coord
: {
3341 LLVMValueRef values
[4] = {
3342 ctx
->abi
->frag_pos
[0],
3343 ctx
->abi
->frag_pos
[1],
3344 ctx
->abi
->frag_pos
[2],
3345 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
, ctx
->abi
->frag_pos
[3])
3347 result
= ac_to_integer(&ctx
->ac
,
3348 ac_build_gather_values(&ctx
->ac
, values
, 4));
3351 case nir_intrinsic_load_layer_id
:
3352 result
= ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)];
3354 case nir_intrinsic_load_front_face
:
3355 result
= ctx
->abi
->front_face
;
3357 case nir_intrinsic_load_helper_invocation
:
3358 result
= ac_build_load_helper_invocation(&ctx
->ac
);
3360 case nir_intrinsic_load_color0
:
3361 result
= ctx
->abi
->color0
;
3363 case nir_intrinsic_load_color1
:
3364 result
= ctx
->abi
->color1
;
3366 case nir_intrinsic_load_user_data_amd
:
3367 assert(LLVMTypeOf(ctx
->abi
->user_data
) == ctx
->ac
.v4i32
);
3368 result
= ctx
->abi
->user_data
;
3370 case nir_intrinsic_load_instance_id
:
3371 result
= ctx
->abi
->instance_id
;
3373 case nir_intrinsic_load_num_work_groups
:
3374 result
= ctx
->abi
->num_work_groups
;
3376 case nir_intrinsic_load_local_invocation_index
:
3377 result
= visit_load_local_invocation_index(ctx
);
3379 case nir_intrinsic_load_subgroup_id
:
3380 result
= visit_load_subgroup_id(ctx
);
3382 case nir_intrinsic_load_num_subgroups
:
3383 result
= visit_load_num_subgroups(ctx
);
3385 case nir_intrinsic_first_invocation
:
3386 result
= visit_first_invocation(ctx
);
3388 case nir_intrinsic_load_push_constant
:
3389 result
= visit_load_push_constant(ctx
, instr
);
3391 case nir_intrinsic_vulkan_resource_index
: {
3392 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3393 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3394 unsigned binding
= nir_intrinsic_binding(instr
);
3396 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3400 case nir_intrinsic_vulkan_resource_reindex
:
3401 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3403 case nir_intrinsic_store_ssbo
:
3404 visit_store_ssbo(ctx
, instr
);
3406 case nir_intrinsic_load_ssbo
:
3407 result
= visit_load_buffer(ctx
, instr
);
3409 case nir_intrinsic_ssbo_atomic_add
:
3410 case nir_intrinsic_ssbo_atomic_imin
:
3411 case nir_intrinsic_ssbo_atomic_umin
:
3412 case nir_intrinsic_ssbo_atomic_imax
:
3413 case nir_intrinsic_ssbo_atomic_umax
:
3414 case nir_intrinsic_ssbo_atomic_and
:
3415 case nir_intrinsic_ssbo_atomic_or
:
3416 case nir_intrinsic_ssbo_atomic_xor
:
3417 case nir_intrinsic_ssbo_atomic_exchange
:
3418 case nir_intrinsic_ssbo_atomic_comp_swap
:
3419 result
= visit_atomic_ssbo(ctx
, instr
);
3421 case nir_intrinsic_load_ubo
:
3422 result
= visit_load_ubo_buffer(ctx
, instr
);
3424 case nir_intrinsic_get_buffer_size
:
3425 result
= visit_get_buffer_size(ctx
, instr
);
3427 case nir_intrinsic_load_deref
:
3428 result
= visit_load_var(ctx
, instr
);
3430 case nir_intrinsic_store_deref
:
3431 visit_store_var(ctx
, instr
);
3433 case nir_intrinsic_load_shared
:
3434 result
= visit_load_shared(ctx
, instr
);
3436 case nir_intrinsic_store_shared
:
3437 visit_store_shared(ctx
, instr
);
3439 case nir_intrinsic_bindless_image_samples
:
3440 case nir_intrinsic_image_deref_samples
:
3441 result
= visit_image_samples(ctx
, instr
);
3443 case nir_intrinsic_bindless_image_load
:
3444 result
= visit_image_load(ctx
, instr
, true);
3446 case nir_intrinsic_image_deref_load
:
3447 result
= visit_image_load(ctx
, instr
, false);
3449 case nir_intrinsic_bindless_image_store
:
3450 visit_image_store(ctx
, instr
, true);
3452 case nir_intrinsic_image_deref_store
:
3453 visit_image_store(ctx
, instr
, false);
3455 case nir_intrinsic_bindless_image_atomic_add
:
3456 case nir_intrinsic_bindless_image_atomic_imin
:
3457 case nir_intrinsic_bindless_image_atomic_umin
:
3458 case nir_intrinsic_bindless_image_atomic_imax
:
3459 case nir_intrinsic_bindless_image_atomic_umax
:
3460 case nir_intrinsic_bindless_image_atomic_and
:
3461 case nir_intrinsic_bindless_image_atomic_or
:
3462 case nir_intrinsic_bindless_image_atomic_xor
:
3463 case nir_intrinsic_bindless_image_atomic_exchange
:
3464 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3465 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
3466 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
3467 result
= visit_image_atomic(ctx
, instr
, true);
3469 case nir_intrinsic_image_deref_atomic_add
:
3470 case nir_intrinsic_image_deref_atomic_imin
:
3471 case nir_intrinsic_image_deref_atomic_umin
:
3472 case nir_intrinsic_image_deref_atomic_imax
:
3473 case nir_intrinsic_image_deref_atomic_umax
:
3474 case nir_intrinsic_image_deref_atomic_and
:
3475 case nir_intrinsic_image_deref_atomic_or
:
3476 case nir_intrinsic_image_deref_atomic_xor
:
3477 case nir_intrinsic_image_deref_atomic_exchange
:
3478 case nir_intrinsic_image_deref_atomic_comp_swap
:
3479 case nir_intrinsic_image_deref_atomic_inc_wrap
:
3480 case nir_intrinsic_image_deref_atomic_dec_wrap
:
3481 result
= visit_image_atomic(ctx
, instr
, false);
3483 case nir_intrinsic_bindless_image_size
:
3484 result
= visit_image_size(ctx
, instr
, true);
3486 case nir_intrinsic_image_deref_size
:
3487 result
= visit_image_size(ctx
, instr
, false);
3489 case nir_intrinsic_shader_clock
:
3490 result
= ac_build_shader_clock(&ctx
->ac
);
3492 case nir_intrinsic_discard
:
3493 case nir_intrinsic_discard_if
:
3494 emit_discard(ctx
, instr
);
3496 case nir_intrinsic_memory_barrier
:
3497 case nir_intrinsic_group_memory_barrier
:
3498 case nir_intrinsic_memory_barrier_atomic_counter
:
3499 case nir_intrinsic_memory_barrier_buffer
:
3500 case nir_intrinsic_memory_barrier_image
:
3501 case nir_intrinsic_memory_barrier_shared
:
3502 emit_membar(&ctx
->ac
, instr
);
3504 case nir_intrinsic_barrier
:
3505 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
3507 case nir_intrinsic_shared_atomic_add
:
3508 case nir_intrinsic_shared_atomic_imin
:
3509 case nir_intrinsic_shared_atomic_umin
:
3510 case nir_intrinsic_shared_atomic_imax
:
3511 case nir_intrinsic_shared_atomic_umax
:
3512 case nir_intrinsic_shared_atomic_and
:
3513 case nir_intrinsic_shared_atomic_or
:
3514 case nir_intrinsic_shared_atomic_xor
:
3515 case nir_intrinsic_shared_atomic_exchange
:
3516 case nir_intrinsic_shared_atomic_comp_swap
: {
3517 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
3518 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3521 case nir_intrinsic_deref_atomic_add
:
3522 case nir_intrinsic_deref_atomic_imin
:
3523 case nir_intrinsic_deref_atomic_umin
:
3524 case nir_intrinsic_deref_atomic_imax
:
3525 case nir_intrinsic_deref_atomic_umax
:
3526 case nir_intrinsic_deref_atomic_and
:
3527 case nir_intrinsic_deref_atomic_or
:
3528 case nir_intrinsic_deref_atomic_xor
:
3529 case nir_intrinsic_deref_atomic_exchange
:
3530 case nir_intrinsic_deref_atomic_comp_swap
: {
3531 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
3532 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3535 case nir_intrinsic_load_barycentric_pixel
:
3536 result
= barycentric_center(ctx
, nir_intrinsic_interp_mode(instr
));
3538 case nir_intrinsic_load_barycentric_centroid
:
3539 result
= barycentric_centroid(ctx
, nir_intrinsic_interp_mode(instr
));
3541 case nir_intrinsic_load_barycentric_sample
:
3542 result
= barycentric_sample(ctx
, nir_intrinsic_interp_mode(instr
));
3544 case nir_intrinsic_load_barycentric_at_offset
: {
3545 LLVMValueRef offset
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3546 result
= barycentric_offset(ctx
, nir_intrinsic_interp_mode(instr
), offset
);
3549 case nir_intrinsic_load_barycentric_at_sample
: {
3550 LLVMValueRef sample_id
= get_src(ctx
, instr
->src
[0]);
3551 result
= barycentric_at_sample(ctx
, nir_intrinsic_interp_mode(instr
), sample_id
);
3554 case nir_intrinsic_load_interpolated_input
: {
3555 /* We assume any indirect loads have been lowered away */
3556 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[1]);
3558 assert(offset
[0].i32
== 0);
3560 LLVMValueRef interp_param
= get_src(ctx
, instr
->src
[0]);
3561 unsigned index
= nir_intrinsic_base(instr
);
3562 unsigned component
= nir_intrinsic_component(instr
);
3563 result
= load_interpolated_input(ctx
, interp_param
, index
,
3565 instr
->dest
.ssa
.num_components
,
3566 instr
->dest
.ssa
.bit_size
);
3569 case nir_intrinsic_load_input
: {
3570 /* We only lower inputs for fragment shaders ATM */
3571 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[0]);
3573 assert(offset
[0].i32
== 0);
3575 unsigned index
= nir_intrinsic_base(instr
);
3576 unsigned component
= nir_intrinsic_component(instr
);
3577 result
= load_flat_input(ctx
, index
, component
,
3578 instr
->dest
.ssa
.num_components
,
3579 instr
->dest
.ssa
.bit_size
);
3582 case nir_intrinsic_emit_vertex
:
3583 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
3585 case nir_intrinsic_end_primitive
:
3586 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
3588 case nir_intrinsic_load_tess_coord
:
3589 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
3591 case nir_intrinsic_load_tess_level_outer
:
3592 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, false);
3594 case nir_intrinsic_load_tess_level_inner
:
3595 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, false);
3597 case nir_intrinsic_load_tess_level_outer_default
:
3598 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, true);
3600 case nir_intrinsic_load_tess_level_inner_default
:
3601 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, true);
3603 case nir_intrinsic_load_patch_vertices_in
:
3604 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
3606 case nir_intrinsic_vote_all
: {
3607 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3608 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3611 case nir_intrinsic_vote_any
: {
3612 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3613 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3616 case nir_intrinsic_shuffle
:
3617 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3618 get_src(ctx
, instr
->src
[1]));
3620 case nir_intrinsic_reduce
:
3621 result
= ac_build_reduce(&ctx
->ac
,
3622 get_src(ctx
, instr
->src
[0]),
3623 instr
->const_index
[0],
3624 instr
->const_index
[1]);
3626 case nir_intrinsic_inclusive_scan
:
3627 result
= ac_build_inclusive_scan(&ctx
->ac
,
3628 get_src(ctx
, instr
->src
[0]),
3629 instr
->const_index
[0]);
3631 case nir_intrinsic_exclusive_scan
:
3632 result
= ac_build_exclusive_scan(&ctx
->ac
,
3633 get_src(ctx
, instr
->src
[0]),
3634 instr
->const_index
[0]);
3636 case nir_intrinsic_quad_broadcast
: {
3637 unsigned lane
= nir_src_as_uint(instr
->src
[1]);
3638 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3639 lane
, lane
, lane
, lane
);
3642 case nir_intrinsic_quad_swap_horizontal
:
3643 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
3645 case nir_intrinsic_quad_swap_vertical
:
3646 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
3648 case nir_intrinsic_quad_swap_diagonal
:
3649 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
3651 case nir_intrinsic_quad_swizzle_amd
: {
3652 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3653 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3654 mask
& 0x3, (mask
>> 2) & 0x3,
3655 (mask
>> 4) & 0x3, (mask
>> 6) & 0x3);
3658 case nir_intrinsic_masked_swizzle_amd
: {
3659 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3660 result
= ac_build_ds_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), mask
);
3663 case nir_intrinsic_write_invocation_amd
:
3664 result
= ac_build_writelane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3665 get_src(ctx
, instr
->src
[1]),
3666 get_src(ctx
, instr
->src
[2]));
3668 case nir_intrinsic_mbcnt_amd
:
3669 result
= ac_build_mbcnt(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3671 case nir_intrinsic_load_scratch
: {
3672 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
3673 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
3675 LLVMTypeRef comp_type
=
3676 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
3677 LLVMTypeRef vec_type
=
3678 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
3679 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
3680 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
3681 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
3682 LLVMPointerType(vec_type
, addr_space
), "");
3683 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
3686 case nir_intrinsic_store_scratch
: {
3687 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
3688 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
3690 LLVMTypeRef comp_type
=
3691 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->src
[0].ssa
->bit_size
);
3692 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
3693 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
3694 LLVMPointerType(comp_type
, addr_space
), "");
3695 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
3696 unsigned wrmask
= nir_intrinsic_write_mask(instr
);
3699 u_bit_scan_consecutive_range(&wrmask
, &start
, &count
);
3701 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, start
, false);
3702 LLVMValueRef offset_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &offset
, 1, "");
3703 LLVMTypeRef vec_type
=
3704 count
== 1 ? comp_type
: LLVMVectorType(comp_type
, count
);
3705 offset_ptr
= LLVMBuildBitCast(ctx
->ac
.builder
,
3707 LLVMPointerType(vec_type
, addr_space
),
3709 LLVMValueRef offset_src
=
3710 ac_extract_components(&ctx
->ac
, src
, start
, count
);
3711 LLVMBuildStore(ctx
->ac
.builder
, offset_src
, offset_ptr
);
3715 case nir_intrinsic_load_constant
: {
3716 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
3717 LLVMValueRef base
= LLVMConstInt(ctx
->ac
.i32
,
3718 nir_intrinsic_base(instr
),
3720 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, base
, "");
3721 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->constant_data
,
3723 LLVMTypeRef comp_type
=
3724 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
3725 LLVMTypeRef vec_type
=
3726 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
3727 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
3728 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
3729 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
3730 LLVMPointerType(vec_type
, addr_space
), "");
3731 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
3735 fprintf(stderr
, "Unknown intrinsic: ");
3736 nir_print_instr(&instr
->instr
, stderr
);
3737 fprintf(stderr
, "\n");
3741 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3745 static LLVMValueRef
get_bindless_index_from_uniform(struct ac_nir_context
*ctx
,
3746 unsigned base_index
,
3747 unsigned constant_index
,
3748 LLVMValueRef dynamic_index
)
3750 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, base_index
* 4, 0);
3751 LLVMValueRef index
= LLVMBuildAdd(ctx
->ac
.builder
, dynamic_index
,
3752 LLVMConstInt(ctx
->ac
.i32
, constant_index
, 0), "");
3754 /* Bindless uniforms are 64bit so multiple index by 8 */
3755 index
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i32
, 8, 0), "");
3756 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, index
, "");
3758 LLVMValueRef ubo_index
= ctx
->abi
->load_ubo(ctx
->abi
, ctx
->ac
.i32_0
);
3760 LLVMValueRef ret
= ac_build_buffer_load(&ctx
->ac
, ubo_index
, 1, NULL
, offset
,
3761 NULL
, 0, 0, true, true);
3763 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ctx
->ac
.i32
, "");
3766 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
3767 nir_deref_instr
*deref_instr
,
3768 enum ac_descriptor_type desc_type
,
3769 const nir_instr
*instr
,
3770 bool image
, bool write
)
3772 LLVMValueRef index
= NULL
;
3773 unsigned constant_index
= 0;
3774 unsigned descriptor_set
;
3775 unsigned base_index
;
3776 bool bindless
= false;
3781 nir_intrinsic_instr
*img_instr
= nir_instr_as_intrinsic(instr
);
3784 index
= get_src(ctx
, img_instr
->src
[0]);
3786 nir_tex_instr
*tex_instr
= nir_instr_as_tex(instr
);
3787 int sampSrcIdx
= nir_tex_instr_src_index(tex_instr
,
3788 nir_tex_src_sampler_handle
);
3789 if (sampSrcIdx
!= -1) {
3792 index
= get_src(ctx
, tex_instr
->src
[sampSrcIdx
].src
);
3794 assert(tex_instr
&& !image
);
3795 base_index
= tex_instr
->sampler_index
;
3799 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3800 if (deref_instr
->deref_type
== nir_deref_type_array
) {
3801 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
3805 if (nir_src_is_const(deref_instr
->arr
.index
)) {
3806 constant_index
+= array_size
* nir_src_as_uint(deref_instr
->arr
.index
);
3808 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3810 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3811 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
3816 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
3819 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3820 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
3821 unsigned sidx
= deref_instr
->strct
.index
;
3822 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3823 constant_index
+= glsl_get_struct_location_offset(deref_instr
->type
, sidx
);
3825 unreachable("Unsupported deref type");
3828 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
3830 if (deref_instr
->var
->data
.bindless
) {
3831 /* For now just assert on unhandled variable types */
3832 assert(deref_instr
->var
->data
.mode
== nir_var_uniform
);
3834 base_index
= deref_instr
->var
->data
.driver_location
;
3837 index
= index
? index
: ctx
->ac
.i32_0
;
3838 index
= get_bindless_index_from_uniform(ctx
, base_index
,
3839 constant_index
, index
);
3841 base_index
= deref_instr
->var
->data
.binding
;
3844 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
3847 constant_index
, index
,
3848 desc_type
, image
, write
, bindless
);
3851 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
3854 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
3855 * filtering manually. The driver sets img7 to a mask clearing
3856 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
3857 * s_and_b32 samp0, samp0, img7
3860 * The ANISO_OVERRIDE sampler field enables this fix in TA.
3862 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
3863 LLVMValueRef res
, LLVMValueRef samp
)
3865 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3866 LLVMValueRef img7
, samp0
;
3868 if (ctx
->ac
.chip_class
>= GFX8
)
3871 img7
= LLVMBuildExtractElement(builder
, res
,
3872 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
3873 samp0
= LLVMBuildExtractElement(builder
, samp
,
3874 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3875 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
3876 return LLVMBuildInsertElement(builder
, samp
, samp0
,
3877 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3880 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
3881 nir_tex_instr
*instr
,
3882 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
3883 LLVMValueRef
*fmask_ptr
)
3885 nir_deref_instr
*texture_deref_instr
= NULL
;
3886 nir_deref_instr
*sampler_deref_instr
= NULL
;
3889 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3890 switch (instr
->src
[i
].src_type
) {
3891 case nir_tex_src_texture_deref
:
3892 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3894 case nir_tex_src_sampler_deref
:
3895 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3897 case nir_tex_src_plane
:
3898 plane
= nir_src_as_int(instr
->src
[i
].src
);
3905 if (!sampler_deref_instr
)
3906 sampler_deref_instr
= texture_deref_instr
;
3908 enum ac_descriptor_type main_descriptor
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
? AC_DESC_BUFFER
: AC_DESC_IMAGE
;
3911 assert(instr
->op
!= nir_texop_txf_ms
&&
3912 instr
->op
!= nir_texop_samples_identical
);
3913 assert(instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
);
3915 main_descriptor
= AC_DESC_PLANE_0
+ plane
;
3918 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, main_descriptor
, &instr
->instr
, false, false);
3921 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, &instr
->instr
, false, false);
3922 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
3923 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
3925 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
3926 instr
->op
== nir_texop_samples_identical
))
3927 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
, &instr
->instr
, false, false);
3930 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
3933 coord
= ac_to_float(ctx
, coord
);
3934 coord
= ac_build_round(ctx
, coord
);
3935 coord
= ac_to_integer(ctx
, coord
);
3939 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
3941 LLVMValueRef result
= NULL
;
3942 struct ac_image_args args
= { 0 };
3943 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
3944 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
3945 unsigned offset_src
= 0;
3947 tex_fetch_ptrs(ctx
, instr
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
3949 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3950 switch (instr
->src
[i
].src_type
) {
3951 case nir_tex_src_coord
: {
3952 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
3953 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
3954 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
3957 case nir_tex_src_projector
:
3959 case nir_tex_src_comparator
:
3960 if (instr
->is_shadow
) {
3961 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
3962 args
.compare
= ac_to_float(&ctx
->ac
, args
.compare
);
3965 case nir_tex_src_offset
:
3966 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
3969 case nir_tex_src_bias
:
3970 if (instr
->op
== nir_texop_txb
)
3971 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
3973 case nir_tex_src_lod
: {
3974 if (nir_src_is_const(instr
->src
[i
].src
) && nir_src_as_uint(instr
->src
[i
].src
) == 0)
3975 args
.level_zero
= true;
3977 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
3980 case nir_tex_src_ms_index
:
3981 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
3983 case nir_tex_src_ms_mcs
:
3985 case nir_tex_src_ddx
:
3986 ddx
= get_src(ctx
, instr
->src
[i
].src
);
3988 case nir_tex_src_ddy
:
3989 ddy
= get_src(ctx
, instr
->src
[i
].src
);
3991 case nir_tex_src_texture_offset
:
3992 case nir_tex_src_sampler_offset
:
3993 case nir_tex_src_plane
:
3999 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
4000 result
= get_buffer_size(ctx
, args
.resource
, true);
4004 if (instr
->op
== nir_texop_texture_samples
) {
4005 LLVMValueRef res
, samples
, is_msaa
;
4006 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
4007 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
4008 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4009 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4010 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
4011 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
4012 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4013 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
4014 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4016 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4017 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
4018 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
4019 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
4020 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
4022 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
4028 if (args
.offset
&& instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
4029 LLVMValueRef offset
[3], pack
;
4030 for (unsigned chan
= 0; chan
< 3; ++chan
)
4031 offset
[chan
] = ctx
->ac
.i32_0
;
4033 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
4034 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
4035 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
4036 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
4037 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
4039 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
4040 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
4042 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
4043 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
4047 /* Section 8.23.1 (Depth Texture Comparison Mode) of the
4048 * OpenGL 4.5 spec says:
4050 * "If the texture’s internal format indicates a fixed-point
4051 * depth texture, then D_t and D_ref are clamped to the
4052 * range [0, 1]; otherwise no clamping is performed."
4054 * TC-compatible HTILE promotes Z16 and Z24 to Z32_FLOAT,
4055 * so the depth comparison value isn't clamped for Z16 and
4056 * Z24 anymore. Do it manually here for GFX8-9; GFX10 has
4057 * an explicitly clamped 32-bit float format.
4060 ctx
->ac
.chip_class
>= GFX8
&&
4061 ctx
->ac
.chip_class
<= GFX9
&&
4062 ctx
->abi
->clamp_shadow_reference
) {
4063 LLVMValueRef upgraded
, clamped
;
4065 upgraded
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
.sampler
,
4066 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4067 upgraded
= LLVMBuildLShr(ctx
->ac
.builder
, upgraded
,
4068 LLVMConstInt(ctx
->ac
.i32
, 29, false), "");
4069 upgraded
= LLVMBuildTrunc(ctx
->ac
.builder
, upgraded
, ctx
->ac
.i1
, "");
4070 clamped
= ac_build_clamp(&ctx
->ac
, args
.compare
);
4071 args
.compare
= LLVMBuildSelect(ctx
->ac
.builder
, upgraded
, clamped
,
4075 /* pack derivatives */
4077 int num_src_deriv_channels
, num_dest_deriv_channels
;
4078 switch (instr
->sampler_dim
) {
4079 case GLSL_SAMPLER_DIM_3D
:
4080 case GLSL_SAMPLER_DIM_CUBE
:
4081 num_src_deriv_channels
= 3;
4082 num_dest_deriv_channels
= 3;
4084 case GLSL_SAMPLER_DIM_2D
:
4086 num_src_deriv_channels
= 2;
4087 num_dest_deriv_channels
= 2;
4089 case GLSL_SAMPLER_DIM_1D
:
4090 num_src_deriv_channels
= 1;
4091 if (ctx
->ac
.chip_class
== GFX9
) {
4092 num_dest_deriv_channels
= 2;
4094 num_dest_deriv_channels
= 1;
4099 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
4100 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
4101 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
4102 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
4103 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
4105 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
4106 args
.derivs
[i
] = ctx
->ac
.f32_0
;
4107 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
4111 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
4112 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
4113 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
4114 if (instr
->coord_components
== 3)
4115 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
4116 ac_prepare_cube_coords(&ctx
->ac
,
4117 instr
->op
== nir_texop_txd
, instr
->is_array
,
4118 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
4121 /* Texture coordinates fixups */
4122 if (instr
->coord_components
> 1 &&
4123 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4125 instr
->op
!= nir_texop_txf
) {
4126 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
4129 if (instr
->coord_components
> 2 &&
4130 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
4131 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
4132 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
4133 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
4135 instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
4136 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
4139 if (ctx
->ac
.chip_class
== GFX9
&&
4140 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4141 instr
->op
!= nir_texop_lod
) {
4142 LLVMValueRef filler
;
4143 if (instr
->op
== nir_texop_txf
)
4144 filler
= ctx
->ac
.i32_0
;
4146 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
4148 if (instr
->is_array
)
4149 args
.coords
[2] = args
.coords
[1];
4150 args
.coords
[1] = filler
;
4153 /* Pack sample index */
4154 if (instr
->op
== nir_texop_txf_ms
&& sample_index
)
4155 args
.coords
[instr
->coord_components
] = sample_index
;
4157 if (instr
->op
== nir_texop_samples_identical
) {
4158 struct ac_image_args txf_args
= { 0 };
4159 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
4161 txf_args
.dmask
= 0xf;
4162 txf_args
.resource
= fmask_ptr
;
4163 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
4164 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
4166 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4167 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
4171 if ((instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
||
4172 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
) &&
4173 instr
->op
!= nir_texop_txs
) {
4174 unsigned sample_chan
= instr
->is_array
? 3 : 2;
4175 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
4176 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
4177 instr
->is_array
? args
.coords
[2] : NULL
,
4178 args
.coords
[sample_chan
], fmask_ptr
);
4181 if (args
.offset
&& (instr
->op
== nir_texop_txf
|| instr
->op
== nir_texop_txf_ms
)) {
4182 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
4183 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
4184 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
4185 args
.coords
[i
] = LLVMBuildAdd(
4186 ctx
->ac
.builder
, args
.coords
[i
],
4187 LLVMConstInt(ctx
->ac
.i32
, nir_src_comp_as_uint(instr
->src
[offset_src
].src
, i
), false), "");
4192 /* DMASK was repurposed for GATHER4. 4 components are always
4193 * returned and DMASK works like a swizzle - it selects
4194 * the component to fetch. The only valid DMASK values are
4195 * 1=red, 2=green, 4=blue, 8=alpha. (e.g. 1 returns
4196 * (red,red,red,red) etc.) The ISA document doesn't mention
4200 if (instr
->op
== nir_texop_tg4
) {
4201 if (instr
->is_shadow
)
4204 args
.dmask
= 1 << instr
->component
;
4207 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
) {
4208 args
.dim
= ac_get_sampler_dim(ctx
->ac
.chip_class
, instr
->sampler_dim
, instr
->is_array
);
4209 args
.unorm
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
;
4211 result
= build_tex_intrinsic(ctx
, instr
, &args
);
4213 if (instr
->op
== nir_texop_query_levels
)
4214 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4215 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
4216 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
4217 instr
->op
!= nir_texop_tg4
)
4218 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4219 else if (instr
->op
== nir_texop_txs
&&
4220 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
4222 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4223 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
4224 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4225 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
4226 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
4227 } else if (ctx
->ac
.chip_class
== GFX9
&&
4228 instr
->op
== nir_texop_txs
&&
4229 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4231 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4232 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4233 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
4235 } else if (instr
->dest
.ssa
.num_components
!= 4)
4236 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
4240 assert(instr
->dest
.is_ssa
);
4241 result
= ac_to_integer(&ctx
->ac
, result
);
4242 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4247 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
4249 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
4250 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
4252 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4253 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
4256 static void visit_post_phi(struct ac_nir_context
*ctx
,
4257 nir_phi_instr
*instr
,
4258 LLVMValueRef llvm_phi
)
4260 nir_foreach_phi_src(src
, instr
) {
4261 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
4262 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
4264 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
4268 static void phi_post_pass(struct ac_nir_context
*ctx
)
4270 hash_table_foreach(ctx
->phis
, entry
) {
4271 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
4272 (LLVMValueRef
)entry
->data
);
4277 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
4278 const nir_ssa_undef_instr
*instr
)
4280 unsigned num_components
= instr
->def
.num_components
;
4281 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
4284 if (num_components
== 1)
4285 undef
= LLVMGetUndef(type
);
4287 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
4289 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
4292 static void visit_jump(struct ac_llvm_context
*ctx
,
4293 const nir_jump_instr
*instr
)
4295 switch (instr
->type
) {
4296 case nir_jump_break
:
4297 ac_build_break(ctx
);
4299 case nir_jump_continue
:
4300 ac_build_continue(ctx
);
4303 fprintf(stderr
, "Unknown NIR jump instr: ");
4304 nir_print_instr(&instr
->instr
, stderr
);
4305 fprintf(stderr
, "\n");
4311 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
4312 enum glsl_base_type type
)
4316 case GLSL_TYPE_UINT
:
4317 case GLSL_TYPE_BOOL
:
4318 case GLSL_TYPE_SUBROUTINE
:
4320 case GLSL_TYPE_INT8
:
4321 case GLSL_TYPE_UINT8
:
4323 case GLSL_TYPE_INT16
:
4324 case GLSL_TYPE_UINT16
:
4326 case GLSL_TYPE_FLOAT
:
4328 case GLSL_TYPE_FLOAT16
:
4330 case GLSL_TYPE_INT64
:
4331 case GLSL_TYPE_UINT64
:
4333 case GLSL_TYPE_DOUBLE
:
4336 unreachable("unknown GLSL type");
4341 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
4342 const struct glsl_type
*type
)
4344 if (glsl_type_is_scalar(type
)) {
4345 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
4348 if (glsl_type_is_vector(type
)) {
4349 return LLVMVectorType(
4350 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
4351 glsl_get_vector_elements(type
));
4354 if (glsl_type_is_matrix(type
)) {
4355 return LLVMArrayType(
4356 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
4357 glsl_get_matrix_columns(type
));
4360 if (glsl_type_is_array(type
)) {
4361 return LLVMArrayType(
4362 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
4363 glsl_get_length(type
));
4366 assert(glsl_type_is_struct_or_ifc(type
));
4368 LLVMTypeRef member_types
[glsl_get_length(type
)];
4370 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
4372 glsl_to_llvm_type(ac
,
4373 glsl_get_struct_field(type
, i
));
4376 return LLVMStructTypeInContext(ac
->context
, member_types
,
4377 glsl_get_length(type
), false);
4380 static void visit_deref(struct ac_nir_context
*ctx
,
4381 nir_deref_instr
*instr
)
4383 if (instr
->mode
!= nir_var_mem_shared
&&
4384 instr
->mode
!= nir_var_mem_global
)
4387 LLVMValueRef result
= NULL
;
4388 switch(instr
->deref_type
) {
4389 case nir_deref_type_var
: {
4390 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
4391 result
= entry
->data
;
4394 case nir_deref_type_struct
:
4395 if (instr
->mode
== nir_var_mem_global
) {
4396 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4397 uint64_t offset
= glsl_get_struct_field_offset(parent
->type
,
4398 instr
->strct
.index
);
4399 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4400 LLVMConstInt(ctx
->ac
.i32
, offset
, 0));
4402 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4403 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
4406 case nir_deref_type_array
:
4407 if (instr
->mode
== nir_var_mem_global
) {
4408 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4409 unsigned stride
= glsl_get_explicit_stride(parent
->type
);
4411 if ((glsl_type_is_matrix(parent
->type
) &&
4412 glsl_matrix_type_is_row_major(parent
->type
)) ||
4413 (glsl_type_is_vector(parent
->type
) && stride
== 0))
4414 stride
= type_scalar_size_bytes(parent
->type
);
4417 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4418 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4419 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4421 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4423 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4425 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4426 get_src(ctx
, instr
->arr
.index
));
4429 case nir_deref_type_ptr_as_array
:
4430 if (instr
->mode
== nir_var_mem_global
) {
4431 unsigned stride
= nir_deref_instr_ptr_as_array_stride(instr
);
4433 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4434 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4435 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4437 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4439 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4441 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4442 get_src(ctx
, instr
->arr
.index
));
4445 case nir_deref_type_cast
: {
4446 result
= get_src(ctx
, instr
->parent
);
4448 /* We can't use the structs from LLVM because the shader
4449 * specifies its own offsets. */
4450 LLVMTypeRef pointee_type
= ctx
->ac
.i8
;
4451 if (instr
->mode
== nir_var_mem_shared
)
4452 pointee_type
= glsl_to_llvm_type(&ctx
->ac
, instr
->type
);
4454 unsigned address_space
;
4456 switch(instr
->mode
) {
4457 case nir_var_mem_shared
:
4458 address_space
= AC_ADDR_SPACE_LDS
;
4460 case nir_var_mem_global
:
4461 address_space
= AC_ADDR_SPACE_GLOBAL
;
4464 unreachable("Unhandled address space");
4467 LLVMTypeRef type
= LLVMPointerType(pointee_type
, address_space
);
4469 if (LLVMTypeOf(result
) != type
) {
4470 if (LLVMGetTypeKind(LLVMTypeOf(result
)) == LLVMVectorTypeKind
) {
4471 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
,
4474 result
= LLVMBuildIntToPtr(ctx
->ac
.builder
, result
,
4481 unreachable("Unhandled deref_instr deref type");
4484 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4487 static void visit_cf_list(struct ac_nir_context
*ctx
,
4488 struct exec_list
*list
);
4490 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
4492 nir_foreach_instr(instr
, block
)
4494 switch (instr
->type
) {
4495 case nir_instr_type_alu
:
4496 visit_alu(ctx
, nir_instr_as_alu(instr
));
4498 case nir_instr_type_load_const
:
4499 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
4501 case nir_instr_type_intrinsic
:
4502 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
4504 case nir_instr_type_tex
:
4505 visit_tex(ctx
, nir_instr_as_tex(instr
));
4507 case nir_instr_type_phi
:
4508 visit_phi(ctx
, nir_instr_as_phi(instr
));
4510 case nir_instr_type_ssa_undef
:
4511 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
4513 case nir_instr_type_jump
:
4514 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
4516 case nir_instr_type_deref
:
4517 visit_deref(ctx
, nir_instr_as_deref(instr
));
4520 fprintf(stderr
, "Unknown NIR instr type: ");
4521 nir_print_instr(instr
, stderr
);
4522 fprintf(stderr
, "\n");
4527 _mesa_hash_table_insert(ctx
->defs
, block
,
4528 LLVMGetInsertBlock(ctx
->ac
.builder
));
4531 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
4533 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
4535 nir_block
*then_block
=
4536 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
4538 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
4540 visit_cf_list(ctx
, &if_stmt
->then_list
);
4542 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
4543 nir_block
*else_block
=
4544 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
4546 ac_build_else(&ctx
->ac
, else_block
->index
);
4547 visit_cf_list(ctx
, &if_stmt
->else_list
);
4550 ac_build_endif(&ctx
->ac
, then_block
->index
);
4553 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
4555 nir_block
*first_loop_block
=
4556 (nir_block
*) exec_list_get_head(&loop
->body
);
4558 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
4560 visit_cf_list(ctx
, &loop
->body
);
4562 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
4565 static void visit_cf_list(struct ac_nir_context
*ctx
,
4566 struct exec_list
*list
)
4568 foreach_list_typed(nir_cf_node
, node
, node
, list
)
4570 switch (node
->type
) {
4571 case nir_cf_node_block
:
4572 visit_block(ctx
, nir_cf_node_as_block(node
));
4575 case nir_cf_node_if
:
4576 visit_if(ctx
, nir_cf_node_as_if(node
));
4579 case nir_cf_node_loop
:
4580 visit_loop(ctx
, nir_cf_node_as_loop(node
));
4590 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
4591 struct ac_shader_abi
*abi
,
4592 struct nir_shader
*nir
,
4593 struct nir_variable
*variable
,
4594 gl_shader_stage stage
)
4596 unsigned output_loc
= variable
->data
.driver_location
/ 4;
4597 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4599 /* tess ctrl has it's own load/store paths for outputs */
4600 if (stage
== MESA_SHADER_TESS_CTRL
)
4603 if (stage
== MESA_SHADER_VERTEX
||
4604 stage
== MESA_SHADER_TESS_EVAL
||
4605 stage
== MESA_SHADER_GEOMETRY
) {
4606 int idx
= variable
->data
.location
+ variable
->data
.index
;
4607 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
4608 int length
= nir
->info
.clip_distance_array_size
+
4609 nir
->info
.cull_distance_array_size
;
4618 bool is_16bit
= glsl_type_is_16bit(glsl_without_array(variable
->type
));
4619 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
4620 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
4621 for (unsigned chan
= 0; chan
< 4; chan
++) {
4622 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
4623 ac_build_alloca_undef(ctx
, type
, "");
4629 setup_locals(struct ac_nir_context
*ctx
,
4630 struct nir_function
*func
)
4633 ctx
->num_locals
= 0;
4634 nir_foreach_variable(variable
, &func
->impl
->locals
) {
4635 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4636 variable
->data
.driver_location
= ctx
->num_locals
* 4;
4637 variable
->data
.location_frac
= 0;
4638 ctx
->num_locals
+= attrib_count
;
4640 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
4644 for (i
= 0; i
< ctx
->num_locals
; i
++) {
4645 for (j
= 0; j
< 4; j
++) {
4646 ctx
->locals
[i
* 4 + j
] =
4647 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
4653 setup_scratch(struct ac_nir_context
*ctx
,
4654 struct nir_shader
*shader
)
4656 if (shader
->scratch_size
== 0)
4659 ctx
->scratch
= ac_build_alloca_undef(&ctx
->ac
,
4660 LLVMArrayType(ctx
->ac
.i8
, shader
->scratch_size
),
4665 setup_constant_data(struct ac_nir_context
*ctx
,
4666 struct nir_shader
*shader
)
4668 if (!shader
->constant_data
)
4672 LLVMConstStringInContext(ctx
->ac
.context
,
4673 shader
->constant_data
,
4674 shader
->constant_data_size
,
4676 LLVMTypeRef type
= LLVMArrayType(ctx
->ac
.i8
, shader
->constant_data_size
);
4678 /* We want to put the constant data in the CONST address space so that
4679 * we can use scalar loads. However, LLVM versions before 10 put these
4680 * variables in the same section as the code, which is unacceptable
4681 * for RadeonSI as it needs to relocate all the data sections after
4682 * the code sections. See https://reviews.llvm.org/D65813.
4684 unsigned address_space
=
4685 LLVM_VERSION_MAJOR
< 10 ? AC_ADDR_SPACE_GLOBAL
: AC_ADDR_SPACE_CONST
;
4687 LLVMValueRef global
=
4688 LLVMAddGlobalInAddressSpace(ctx
->ac
.module
, type
,
4692 LLVMSetInitializer(global
, data
);
4693 LLVMSetGlobalConstant(global
, true);
4694 LLVMSetVisibility(global
, LLVMHiddenVisibility
);
4695 ctx
->constant_data
= global
;
4699 setup_shared(struct ac_nir_context
*ctx
,
4700 struct nir_shader
*nir
)
4702 nir_foreach_variable(variable
, &nir
->shared
) {
4703 LLVMValueRef shared
=
4704 LLVMAddGlobalInAddressSpace(
4705 ctx
->ac
.module
, glsl_to_llvm_type(&ctx
->ac
, variable
->type
),
4706 variable
->name
? variable
->name
: "",
4708 _mesa_hash_table_insert(ctx
->vars
, variable
, shared
);
4712 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
4713 struct nir_shader
*nir
)
4715 struct ac_nir_context ctx
= {};
4716 struct nir_function
*func
;
4721 ctx
.stage
= nir
->info
.stage
;
4722 ctx
.info
= &nir
->info
;
4724 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
4726 nir_foreach_variable(variable
, &nir
->outputs
)
4727 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
4730 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4731 _mesa_key_pointer_equal
);
4732 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4733 _mesa_key_pointer_equal
);
4734 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4735 _mesa_key_pointer_equal
);
4737 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
4739 nir_index_ssa_defs(func
->impl
);
4740 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
4742 setup_locals(&ctx
, func
);
4743 setup_scratch(&ctx
, nir
);
4744 setup_constant_data(&ctx
, nir
);
4746 if (gl_shader_stage_is_compute(nir
->info
.stage
))
4747 setup_shared(&ctx
, nir
);
4749 visit_cf_list(&ctx
, &func
->impl
->body
);
4750 phi_post_pass(&ctx
);
4752 if (!gl_shader_stage_is_compute(nir
->info
.stage
))
4753 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
4758 ralloc_free(ctx
.defs
);
4759 ralloc_free(ctx
.phis
);
4760 ralloc_free(ctx
.vars
);
4764 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
4766 /* Lower large variables to scratch first so that we won't bloat the
4767 * shader by generating large if ladders for them. We later lower
4768 * scratch to alloca's, assuming LLVM won't generate VGPR indexing.
4770 NIR_PASS_V(nir
, nir_lower_vars_to_scratch
,
4771 nir_var_function_temp
,
4773 glsl_get_natural_size_align_bytes
);
4775 /* While it would be nice not to have this flag, we are constrained
4776 * by the reality that LLVM 9.0 has buggy VGPR indexing on GFX9.
4778 bool llvm_has_working_vgpr_indexing
= chip_class
!= GFX9
;
4780 /* TODO: Indirect indexing of GS inputs is unimplemented.
4782 * TCS and TES load inputs directly from LDS or offchip memory, so
4783 * indirect indexing is trivial.
4785 nir_variable_mode indirect_mask
= 0;
4786 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
4787 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
4788 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
4789 !llvm_has_working_vgpr_indexing
)) {
4790 indirect_mask
|= nir_var_shader_in
;
4792 if (!llvm_has_working_vgpr_indexing
&&
4793 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
4794 indirect_mask
|= nir_var_shader_out
;
4796 /* TODO: We shouldn't need to do this, however LLVM isn't currently
4797 * smart enough to handle indirects without causing excess spilling
4798 * causing the gpu to hang.
4800 * See the following thread for more details of the problem:
4801 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
4803 indirect_mask
|= nir_var_function_temp
;
4805 nir_lower_indirect_derefs(nir
, indirect_mask
);
4809 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
4811 if (intrin
->intrinsic
!= nir_intrinsic_store_deref
)
4815 nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[0]));
4817 if (var
->data
.mode
!= nir_var_shader_out
)
4820 unsigned writemask
= 0;
4821 const int location
= var
->data
.location
;
4822 unsigned first_component
= var
->data
.location_frac
;
4823 unsigned num_comps
= intrin
->dest
.ssa
.num_components
;
4825 if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
4826 writemask
= ((1 << (num_comps
+ 1)) - 1) << first_component
;
4827 else if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
4828 writemask
= (((1 << (num_comps
+ 1)) - 1) << first_component
) << 4;
4834 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
4835 unsigned *cond_block_tf_writemask
,
4836 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
4838 switch (cf_node
->type
) {
4839 case nir_cf_node_block
: {
4840 nir_block
*block
= nir_cf_node_as_block(cf_node
);
4841 nir_foreach_instr(instr
, block
) {
4842 if (instr
->type
!= nir_instr_type_intrinsic
)
4845 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
4846 if (intrin
->intrinsic
== nir_intrinsic_barrier
) {
4848 /* If we find a barrier in nested control flow put this in the
4849 * too hard basket. In GLSL this is not possible but it is in
4853 *tessfactors_are_def_in_all_invocs
= false;
4857 /* The following case must be prevented:
4858 * gl_TessLevelInner = ...;
4860 * if (gl_InvocationID == 1)
4861 * gl_TessLevelInner = ...;
4863 * If you consider disjoint code segments separated by barriers, each
4864 * such segment that writes tess factor channels should write the same
4865 * channels in all codepaths within that segment.
4867 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
4868 /* Accumulate the result: */
4869 *tessfactors_are_def_in_all_invocs
&=
4870 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
4872 /* Analyze the next code segment from scratch. */
4873 *upper_block_tf_writemask
= 0;
4874 *cond_block_tf_writemask
= 0;
4877 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
4882 case nir_cf_node_if
: {
4883 unsigned then_tessfactor_writemask
= 0;
4884 unsigned else_tessfactor_writemask
= 0;
4886 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
4887 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
4888 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
4889 cond_block_tf_writemask
,
4890 tessfactors_are_def_in_all_invocs
, true);
4893 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
4894 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
4895 cond_block_tf_writemask
,
4896 tessfactors_are_def_in_all_invocs
, true);
4899 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
4900 /* If both statements write the same tess factor channels,
4901 * we can say that the upper block writes them too.
4903 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
4904 else_tessfactor_writemask
;
4905 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
4906 else_tessfactor_writemask
;
4911 case nir_cf_node_loop
: {
4912 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
4913 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
4914 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
4915 cond_block_tf_writemask
,
4916 tessfactors_are_def_in_all_invocs
, true);
4922 unreachable("unknown cf node type");
4927 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
4929 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
4931 /* The pass works as follows:
4932 * If all codepaths write tess factors, we can say that all
4933 * invocations define tess factors.
4935 * Each tess factor channel is tracked separately.
4937 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
4938 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
4940 /* Initial value = true. Here the pass will accumulate results from
4941 * multiple segments surrounded by barriers. If tess factors aren't
4942 * written at all, it's a shader bug and we don't care if this will be
4945 bool tessfactors_are_def_in_all_invocs
= true;
4947 nir_foreach_function(function
, nir
) {
4948 if (function
->impl
) {
4949 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
4950 scan_tess_ctrl(node
, &main_block_tf_writemask
,
4951 &cond_block_tf_writemask
,
4952 &tessfactors_are_def_in_all_invocs
,
4958 /* Accumulate the result for the last code segment separated by a
4961 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
4962 tessfactors_are_def_in_all_invocs
&=
4963 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
4966 return tessfactors_are_def_in_all_invocs
;