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
;
41 const struct ac_shader_args
*args
;
43 gl_shader_stage stage
;
46 LLVMValueRef
*ssa_defs
;
49 LLVMValueRef constant_data
;
51 struct hash_table
*defs
;
52 struct hash_table
*phis
;
53 struct hash_table
*vars
;
55 LLVMValueRef main_function
;
56 LLVMBasicBlockRef continue_block
;
57 LLVMBasicBlockRef break_block
;
63 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
64 nir_deref_instr
*deref_instr
,
65 enum ac_descriptor_type desc_type
,
66 const nir_instr
*instr
,
67 bool image
, bool write
);
70 build_store_values_extended(struct ac_llvm_context
*ac
,
73 unsigned value_stride
,
76 LLVMBuilderRef builder
= ac
->builder
;
79 for (i
= 0; i
< value_count
; i
++) {
80 LLVMValueRef ptr
= values
[i
* value_stride
];
81 LLVMValueRef index
= LLVMConstInt(ac
->i32
, i
, false);
82 LLVMValueRef value
= LLVMBuildExtractElement(builder
, vec
, index
, "");
83 LLVMBuildStore(builder
, value
, ptr
);
87 static LLVMTypeRef
get_def_type(struct ac_nir_context
*ctx
,
88 const nir_ssa_def
*def
)
90 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, def
->bit_size
);
91 if (def
->num_components
> 1) {
92 type
= LLVMVectorType(type
, def
->num_components
);
97 static LLVMValueRef
get_src(struct ac_nir_context
*nir
, nir_src src
)
100 return nir
->ssa_defs
[src
.ssa
->index
];
104 get_memory_ptr(struct ac_nir_context
*ctx
, nir_src src
)
106 LLVMValueRef ptr
= get_src(ctx
, src
);
107 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ctx
->ac
.lds
, &ptr
, 1, "");
108 int addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
110 return LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
111 LLVMPointerType(ctx
->ac
.i32
, addr_space
), "");
114 static LLVMBasicBlockRef
get_block(struct ac_nir_context
*nir
,
115 const struct nir_block
*b
)
117 struct hash_entry
*entry
= _mesa_hash_table_search(nir
->defs
, b
);
118 return (LLVMBasicBlockRef
)entry
->data
;
121 static LLVMValueRef
get_alu_src(struct ac_nir_context
*ctx
,
123 unsigned num_components
)
125 LLVMValueRef value
= get_src(ctx
, src
.src
);
126 bool need_swizzle
= false;
129 unsigned src_components
= ac_get_llvm_num_components(value
);
130 for (unsigned i
= 0; i
< num_components
; ++i
) {
131 assert(src
.swizzle
[i
] < src_components
);
132 if (src
.swizzle
[i
] != i
)
136 if (need_swizzle
|| num_components
!= src_components
) {
137 LLVMValueRef masks
[] = {
138 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[0], false),
139 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[1], false),
140 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[2], false),
141 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[3], false)};
143 if (src_components
> 1 && num_components
== 1) {
144 value
= LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
146 } else if (src_components
== 1 && num_components
> 1) {
147 LLVMValueRef values
[] = {value
, value
, value
, value
};
148 value
= ac_build_gather_values(&ctx
->ac
, values
, num_components
);
150 LLVMValueRef swizzle
= LLVMConstVector(masks
, num_components
);
151 value
= LLVMBuildShuffleVector(ctx
->ac
.builder
, value
, value
,
160 static LLVMValueRef
emit_int_cmp(struct ac_llvm_context
*ctx
,
161 LLVMIntPredicate pred
, LLVMValueRef src0
,
164 LLVMValueRef result
= LLVMBuildICmp(ctx
->builder
, pred
, src0
, src1
, "");
165 return LLVMBuildSelect(ctx
->builder
, result
,
166 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
170 static LLVMValueRef
emit_float_cmp(struct ac_llvm_context
*ctx
,
171 LLVMRealPredicate pred
, LLVMValueRef src0
,
175 src0
= ac_to_float(ctx
, src0
);
176 src1
= ac_to_float(ctx
, src1
);
177 result
= LLVMBuildFCmp(ctx
->builder
, pred
, src0
, src1
, "");
178 return LLVMBuildSelect(ctx
->builder
, result
,
179 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
183 static LLVMValueRef
emit_intrin_1f_param(struct ac_llvm_context
*ctx
,
185 LLVMTypeRef result_type
,
189 LLVMValueRef params
[] = {
190 ac_to_float(ctx
, src0
),
193 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
194 ac_get_elem_bits(ctx
, result_type
));
195 assert(length
< sizeof(name
));
196 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 1, AC_FUNC_ATTR_READNONE
);
199 static LLVMValueRef
emit_intrin_2f_param(struct ac_llvm_context
*ctx
,
201 LLVMTypeRef result_type
,
202 LLVMValueRef src0
, LLVMValueRef src1
)
205 LLVMValueRef params
[] = {
206 ac_to_float(ctx
, src0
),
207 ac_to_float(ctx
, src1
),
210 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
211 ac_get_elem_bits(ctx
, result_type
));
212 assert(length
< sizeof(name
));
213 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 2, AC_FUNC_ATTR_READNONE
);
216 static LLVMValueRef
emit_intrin_3f_param(struct ac_llvm_context
*ctx
,
218 LLVMTypeRef result_type
,
219 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
222 LLVMValueRef params
[] = {
223 ac_to_float(ctx
, src0
),
224 ac_to_float(ctx
, src1
),
225 ac_to_float(ctx
, src2
),
228 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
229 ac_get_elem_bits(ctx
, result_type
));
230 assert(length
< sizeof(name
));
231 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 3, AC_FUNC_ATTR_READNONE
);
234 static LLVMValueRef
emit_bcsel(struct ac_llvm_context
*ctx
,
235 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
237 assert(LLVMGetTypeKind(LLVMTypeOf(src0
)) != LLVMVectorTypeKind
);
239 LLVMValueRef v
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
,
241 return LLVMBuildSelect(ctx
->builder
, v
,
242 ac_to_integer_or_pointer(ctx
, src1
),
243 ac_to_integer_or_pointer(ctx
, src2
), "");
246 static LLVMValueRef
emit_iabs(struct ac_llvm_context
*ctx
,
249 return ac_build_imax(ctx
, src0
, LLVMBuildNeg(ctx
->builder
, src0
, ""));
252 static LLVMValueRef
emit_uint_carry(struct ac_llvm_context
*ctx
,
254 LLVMValueRef src0
, LLVMValueRef src1
)
256 LLVMTypeRef ret_type
;
257 LLVMTypeRef types
[] = { ctx
->i32
, ctx
->i1
};
259 LLVMValueRef params
[] = { src0
, src1
};
260 ret_type
= LLVMStructTypeInContext(ctx
->context
, types
,
263 res
= ac_build_intrinsic(ctx
, intrin
, ret_type
,
264 params
, 2, AC_FUNC_ATTR_READNONE
);
266 res
= LLVMBuildExtractValue(ctx
->builder
, res
, 1, "");
267 res
= LLVMBuildZExt(ctx
->builder
, res
, ctx
->i32
, "");
271 static LLVMValueRef
emit_b2f(struct ac_llvm_context
*ctx
,
275 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
,
276 LLVMBuildBitCast(ctx
->builder
, LLVMConstReal(ctx
->f32
, 1.0), ctx
->i32
, ""),
278 result
= LLVMBuildBitCast(ctx
->builder
, result
, ctx
->f32
, "");
282 return LLVMBuildFPTrunc(ctx
->builder
, result
, ctx
->f16
, "");
286 return LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f64
, "");
288 unreachable("Unsupported bit size.");
292 static LLVMValueRef
emit_f2b(struct ac_llvm_context
*ctx
,
295 src0
= ac_to_float(ctx
, src0
);
296 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
297 return LLVMBuildSExt(ctx
->builder
,
298 LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
, src0
, zero
, ""),
302 static LLVMValueRef
emit_b2i(struct ac_llvm_context
*ctx
,
306 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
, ctx
->i32_1
, "");
310 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i8
, "");
312 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i16
, "");
316 return LLVMBuildZExt(ctx
->builder
, result
, ctx
->i64
, "");
318 unreachable("Unsupported bit size.");
322 static LLVMValueRef
emit_i2b(struct ac_llvm_context
*ctx
,
325 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
326 return LLVMBuildSExt(ctx
->builder
,
327 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
, zero
, ""),
331 static LLVMValueRef
emit_f2f16(struct ac_llvm_context
*ctx
,
335 LLVMValueRef cond
= NULL
;
337 src0
= ac_to_float(ctx
, src0
);
338 result
= LLVMBuildFPTrunc(ctx
->builder
, src0
, ctx
->f16
, "");
340 if (ctx
->chip_class
>= GFX8
) {
341 LLVMValueRef args
[2];
342 /* Check if the result is a denormal - and flush to 0 if so. */
344 args
[1] = LLVMConstInt(ctx
->i32
, N_SUBNORMAL
| P_SUBNORMAL
, false);
345 cond
= ac_build_intrinsic(ctx
, "llvm.amdgcn.class.f16", ctx
->i1
, args
, 2, AC_FUNC_ATTR_READNONE
);
348 /* need to convert back up to f32 */
349 result
= LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f32
, "");
351 if (ctx
->chip_class
>= GFX8
)
352 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
355 /* 0x38800000 is smallest half float value (2^-14) in 32-bit float,
356 * so compare the result and flush to 0 if it's smaller.
358 LLVMValueRef temp
, cond2
;
359 temp
= emit_intrin_1f_param(ctx
, "llvm.fabs", ctx
->f32
, result
);
360 cond
= LLVMBuildFCmp(ctx
->builder
, LLVMRealOGT
,
361 LLVMBuildBitCast(ctx
->builder
, LLVMConstInt(ctx
->i32
, 0x38800000, false), ctx
->f32
, ""),
363 cond2
= LLVMBuildFCmp(ctx
->builder
, LLVMRealONE
,
364 temp
, ctx
->f32_0
, "");
365 cond
= LLVMBuildAnd(ctx
->builder
, cond
, cond2
, "");
366 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
371 static LLVMValueRef
emit_umul_high(struct ac_llvm_context
*ctx
,
372 LLVMValueRef src0
, LLVMValueRef src1
)
374 LLVMValueRef dst64
, result
;
375 src0
= LLVMBuildZExt(ctx
->builder
, src0
, ctx
->i64
, "");
376 src1
= LLVMBuildZExt(ctx
->builder
, src1
, ctx
->i64
, "");
378 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
379 dst64
= LLVMBuildLShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
380 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
384 static LLVMValueRef
emit_imul_high(struct ac_llvm_context
*ctx
,
385 LLVMValueRef src0
, LLVMValueRef src1
)
387 LLVMValueRef dst64
, result
;
388 src0
= LLVMBuildSExt(ctx
->builder
, src0
, ctx
->i64
, "");
389 src1
= LLVMBuildSExt(ctx
->builder
, src1
, ctx
->i64
, "");
391 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
392 dst64
= LLVMBuildAShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
393 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
397 static LLVMValueRef
emit_bfm(struct ac_llvm_context
*ctx
,
398 LLVMValueRef bits
, LLVMValueRef offset
)
400 /* mask = ((1 << bits) - 1) << offset */
401 return LLVMBuildShl(ctx
->builder
,
402 LLVMBuildSub(ctx
->builder
,
403 LLVMBuildShl(ctx
->builder
,
410 static LLVMValueRef
emit_bitfield_select(struct ac_llvm_context
*ctx
,
411 LLVMValueRef mask
, LLVMValueRef insert
,
415 * (mask & insert) | (~mask & base) = base ^ (mask & (insert ^ base))
416 * Use the right-hand side, which the LLVM backend can convert to V_BFI.
418 return LLVMBuildXor(ctx
->builder
, base
,
419 LLVMBuildAnd(ctx
->builder
, mask
,
420 LLVMBuildXor(ctx
->builder
, insert
, base
, ""), ""), "");
423 static LLVMValueRef
emit_pack_2x16(struct ac_llvm_context
*ctx
,
425 LLVMValueRef (*pack
)(struct ac_llvm_context
*ctx
,
426 LLVMValueRef args
[2]))
428 LLVMValueRef comp
[2];
430 src0
= ac_to_float(ctx
, src0
);
431 comp
[0] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_0
, "");
432 comp
[1] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_1
, "");
434 return LLVMBuildBitCast(ctx
->builder
, pack(ctx
, comp
), ctx
->i32
, "");
437 static LLVMValueRef
emit_unpack_half_2x16(struct ac_llvm_context
*ctx
,
440 LLVMValueRef const16
= LLVMConstInt(ctx
->i32
, 16, false);
441 LLVMValueRef temps
[2], val
;
444 for (i
= 0; i
< 2; i
++) {
445 val
= i
== 1 ? LLVMBuildLShr(ctx
->builder
, src0
, const16
, "") : src0
;
446 val
= LLVMBuildTrunc(ctx
->builder
, val
, ctx
->i16
, "");
447 val
= LLVMBuildBitCast(ctx
->builder
, val
, ctx
->f16
, "");
448 temps
[i
] = LLVMBuildFPExt(ctx
->builder
, val
, ctx
->f32
, "");
450 return ac_build_gather_values(ctx
, temps
, 2);
453 static LLVMValueRef
emit_ddxy(struct ac_nir_context
*ctx
,
461 if (op
== nir_op_fddx_fine
)
462 mask
= AC_TID_MASK_LEFT
;
463 else if (op
== nir_op_fddy_fine
)
464 mask
= AC_TID_MASK_TOP
;
466 mask
= AC_TID_MASK_TOP_LEFT
;
468 /* for DDX we want to next X pixel, DDY next Y pixel. */
469 if (op
== nir_op_fddx_fine
||
470 op
== nir_op_fddx_coarse
||
476 result
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, src0
);
480 static void visit_alu(struct ac_nir_context
*ctx
, const nir_alu_instr
*instr
)
482 LLVMValueRef src
[4], result
= NULL
;
483 unsigned num_components
= instr
->dest
.dest
.ssa
.num_components
;
484 unsigned src_components
;
485 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.dest
.ssa
);
487 assert(nir_op_infos
[instr
->op
].num_inputs
<= ARRAY_SIZE(src
));
494 case nir_op_pack_half_2x16
:
495 case nir_op_pack_snorm_2x16
:
496 case nir_op_pack_unorm_2x16
:
499 case nir_op_unpack_half_2x16
:
502 case nir_op_cube_face_coord
:
503 case nir_op_cube_face_index
:
507 src_components
= num_components
;
510 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
511 src
[i
] = get_alu_src(ctx
, instr
->src
[i
], src_components
);
518 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
519 result
= LLVMBuildFNeg(ctx
->ac
.builder
, src
[0], "");
520 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO
) {
521 /* fneg will be optimized by backend compiler with sign
522 * bit removed via XOR. This is probably a LLVM bug.
524 result
= ac_build_canonicalize(&ctx
->ac
, result
,
525 instr
->dest
.dest
.ssa
.bit_size
);
529 result
= LLVMBuildNeg(ctx
->ac
.builder
, src
[0], "");
532 result
= LLVMBuildNot(ctx
->ac
.builder
, src
[0], "");
535 result
= LLVMBuildAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
538 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
539 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
540 result
= LLVMBuildFAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
543 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
544 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
545 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], src
[1], "");
548 result
= LLVMBuildSub(ctx
->ac
.builder
, src
[0], src
[1], "");
551 result
= LLVMBuildMul(ctx
->ac
.builder
, src
[0], src
[1], "");
554 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
557 result
= LLVMBuildURem(ctx
->ac
.builder
, src
[0], src
[1], "");
560 /* lower_fmod only lower 16-bit and 32-bit fmod */
561 assert(instr
->dest
.dest
.ssa
.bit_size
== 64);
562 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
563 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
564 result
= ac_build_fdiv(&ctx
->ac
, src
[0], src
[1]);
565 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
566 ac_to_float_type(&ctx
->ac
, def_type
), result
);
567 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[1] , result
, "");
568 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], result
, "");
571 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
574 result
= LLVMBuildSDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
577 result
= LLVMBuildUDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
580 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
581 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
582 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[0], src
[1], "");
585 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
586 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(src
[0]), 1.0), src
[0]);
589 result
= LLVMBuildAnd(ctx
->ac
.builder
, src
[0], src
[1], "");
592 result
= LLVMBuildOr(ctx
->ac
.builder
, src
[0], src
[1], "");
595 result
= LLVMBuildXor(ctx
->ac
.builder
, src
[0], src
[1], "");
598 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
599 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
600 LLVMTypeOf(src
[0]), "");
601 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
602 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
603 LLVMTypeOf(src
[0]), "");
604 result
= LLVMBuildShl(ctx
->ac
.builder
, src
[0], src
[1], "");
607 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
608 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
609 LLVMTypeOf(src
[0]), "");
610 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
611 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
612 LLVMTypeOf(src
[0]), "");
613 result
= LLVMBuildAShr(ctx
->ac
.builder
, src
[0], src
[1], "");
616 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
617 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
618 LLVMTypeOf(src
[0]), "");
619 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
620 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
621 LLVMTypeOf(src
[0]), "");
622 result
= LLVMBuildLShr(ctx
->ac
.builder
, src
[0], src
[1], "");
625 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
628 result
= emit_int_cmp(&ctx
->ac
, LLVMIntNE
, src
[0], src
[1]);
631 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, src
[0], src
[1]);
634 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSGE
, src
[0], src
[1]);
637 result
= emit_int_cmp(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
640 result
= emit_int_cmp(&ctx
->ac
, LLVMIntUGE
, src
[0], src
[1]);
643 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOEQ
, src
[0], src
[1]);
646 result
= emit_float_cmp(&ctx
->ac
, LLVMRealUNE
, src
[0], src
[1]);
649 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOLT
, src
[0], src
[1]);
652 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOGE
, src
[0], src
[1]);
655 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.fabs",
656 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
657 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO
) {
658 /* fabs will be optimized by backend compiler with sign
659 * bit removed via AND.
661 result
= ac_build_canonicalize(&ctx
->ac
, result
,
662 instr
->dest
.dest
.ssa
.bit_size
);
666 result
= emit_iabs(&ctx
->ac
, src
[0]);
669 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
672 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
675 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
678 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
681 result
= ac_build_isign(&ctx
->ac
, src
[0],
682 instr
->dest
.dest
.ssa
.bit_size
);
685 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
686 result
= ac_build_fsign(&ctx
->ac
, src
[0],
687 instr
->dest
.dest
.ssa
.bit_size
);
690 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
691 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
694 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.trunc",
695 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
698 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.ceil",
699 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
701 case nir_op_fround_even
:
702 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.rint",
703 ac_to_float_type(&ctx
->ac
, def_type
),src
[0]);
706 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
707 result
= ac_build_fract(&ctx
->ac
, src
[0],
708 instr
->dest
.dest
.ssa
.bit_size
);
711 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sin",
712 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
715 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.cos",
716 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
719 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
720 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
723 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.exp2",
724 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
727 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.log2",
728 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
731 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
732 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
733 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(result
), 1.0), result
);
735 case nir_op_frexp_exp
:
736 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
737 result
= ac_build_frexp_exp(&ctx
->ac
, src
[0],
738 ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])));
739 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) == 16)
740 result
= LLVMBuildSExt(ctx
->ac
.builder
, result
,
743 case nir_op_frexp_sig
:
744 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
745 result
= ac_build_frexp_mant(&ctx
->ac
, src
[0],
746 instr
->dest
.dest
.ssa
.bit_size
);
749 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.pow",
750 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
753 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
754 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
755 if (ctx
->ac
.chip_class
< GFX9
&&
756 instr
->dest
.dest
.ssa
.bit_size
== 32) {
757 /* Only pre-GFX9 chips do not flush denorms. */
758 result
= ac_build_canonicalize(&ctx
->ac
, result
,
759 instr
->dest
.dest
.ssa
.bit_size
);
763 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
764 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
765 if (ctx
->ac
.chip_class
< GFX9
&&
766 instr
->dest
.dest
.ssa
.bit_size
== 32) {
767 /* Only pre-GFX9 chips do not flush denorms. */
768 result
= ac_build_canonicalize(&ctx
->ac
, result
,
769 instr
->dest
.dest
.ssa
.bit_size
);
773 /* FMA is better on GFX10, because it has FMA units instead of MUL-ADD units. */
774 result
= emit_intrin_3f_param(&ctx
->ac
, ctx
->ac
.chip_class
>= GFX10
? "llvm.fma" : "llvm.fmuladd",
775 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1], src
[2]);
778 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
779 if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 32)
780 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f32", ctx
->ac
.f32
, src
, 2, AC_FUNC_ATTR_READNONE
);
781 else if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 16)
782 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f16", ctx
->ac
.f16
, src
, 2, AC_FUNC_ATTR_READNONE
);
784 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f64", ctx
->ac
.f64
, src
, 2, AC_FUNC_ATTR_READNONE
);
787 result
= emit_bfm(&ctx
->ac
, src
[0], src
[1]);
789 case nir_op_bitfield_select
:
790 result
= emit_bitfield_select(&ctx
->ac
, src
[0], src
[1], src
[2]);
793 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], false);
796 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], true);
798 case nir_op_bitfield_reverse
:
799 result
= ac_build_bitfield_reverse(&ctx
->ac
, src
[0]);
801 case nir_op_bit_count
:
802 result
= ac_build_bit_count(&ctx
->ac
, src
[0]);
807 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
808 src
[i
] = ac_to_integer(&ctx
->ac
, src
[i
]);
809 result
= ac_build_gather_values(&ctx
->ac
, src
, num_components
);
815 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
816 result
= LLVMBuildFPToSI(ctx
->ac
.builder
, src
[0], def_type
, "");
822 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
823 result
= LLVMBuildFPToUI(ctx
->ac
.builder
, src
[0], def_type
, "");
828 result
= LLVMBuildSIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
833 result
= LLVMBuildUIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
835 case nir_op_f2f16_rtz
:
836 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
837 if (LLVMTypeOf(src
[0]) == ctx
->ac
.f64
)
838 src
[0] = LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ctx
->ac
.f32
, "");
839 LLVMValueRef param
[2] = { src
[0], ctx
->ac
.f32_0
};
840 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, param
);
841 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
843 case nir_op_f2f16_rtne
:
847 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
848 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
849 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
851 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
857 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
858 result
= LLVMBuildZExt(ctx
->ac
.builder
, src
[0], def_type
, "");
860 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
866 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
867 result
= LLVMBuildSExt(ctx
->ac
.builder
, src
[0], def_type
, "");
869 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
872 result
= emit_bcsel(&ctx
->ac
, src
[0], src
[1], src
[2]);
874 case nir_op_find_lsb
:
875 result
= ac_find_lsb(&ctx
->ac
, ctx
->ac
.i32
, src
[0]);
877 case nir_op_ufind_msb
:
878 result
= ac_build_umsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
880 case nir_op_ifind_msb
:
881 result
= ac_build_imsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
883 case nir_op_uadd_carry
:
884 result
= emit_uint_carry(&ctx
->ac
, "llvm.uadd.with.overflow.i32", src
[0], src
[1]);
886 case nir_op_usub_borrow
:
887 result
= emit_uint_carry(&ctx
->ac
, "llvm.usub.with.overflow.i32", src
[0], src
[1]);
892 result
= emit_b2f(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
895 result
= emit_f2b(&ctx
->ac
, src
[0]);
901 result
= emit_b2i(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
904 result
= emit_i2b(&ctx
->ac
, src
[0]);
906 case nir_op_fquantize2f16
:
907 result
= emit_f2f16(&ctx
->ac
, src
[0]);
909 case nir_op_umul_high
:
910 result
= emit_umul_high(&ctx
->ac
, src
[0], src
[1]);
912 case nir_op_imul_high
:
913 result
= emit_imul_high(&ctx
->ac
, src
[0], src
[1]);
915 case nir_op_pack_half_2x16
:
916 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pkrtz_f16
);
918 case nir_op_pack_snorm_2x16
:
919 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_i16
);
921 case nir_op_pack_unorm_2x16
:
922 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_u16
);
924 case nir_op_unpack_half_2x16
:
925 result
= emit_unpack_half_2x16(&ctx
->ac
, src
[0]);
929 case nir_op_fddx_fine
:
930 case nir_op_fddy_fine
:
931 case nir_op_fddx_coarse
:
932 case nir_op_fddy_coarse
:
933 result
= emit_ddxy(ctx
, instr
->op
, src
[0]);
936 case nir_op_unpack_64_2x32_split_x
: {
937 assert(ac_get_llvm_num_components(src
[0]) == 1);
938 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
941 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
946 case nir_op_unpack_64_2x32_split_y
: {
947 assert(ac_get_llvm_num_components(src
[0]) == 1);
948 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
951 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
956 case nir_op_pack_64_2x32_split
: {
957 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
958 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i64
, "");
962 case nir_op_pack_32_2x16_split
: {
963 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
964 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
968 case nir_op_unpack_32_2x16_split_x
: {
969 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
972 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
977 case nir_op_unpack_32_2x16_split_y
: {
978 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
981 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
986 case nir_op_cube_face_coord
: {
987 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
988 LLVMValueRef results
[2];
990 for (unsigned chan
= 0; chan
< 3; chan
++)
991 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
992 results
[0] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubesc",
993 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
994 results
[1] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubetc",
995 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
996 LLVMValueRef ma
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubema",
997 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
998 results
[0] = ac_build_fdiv(&ctx
->ac
, results
[0], ma
);
999 results
[1] = ac_build_fdiv(&ctx
->ac
, results
[1], ma
);
1000 LLVMValueRef offset
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
1001 results
[0] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[0], offset
, "");
1002 results
[1] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[1], offset
, "");
1003 result
= ac_build_gather_values(&ctx
->ac
, results
, 2);
1007 case nir_op_cube_face_index
: {
1008 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1010 for (unsigned chan
= 0; chan
< 3; chan
++)
1011 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1012 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubeid",
1013 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1018 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1019 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1020 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1021 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1024 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1025 result
= ac_build_umin(&ctx
->ac
, result
, src
[2]);
1028 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1029 result
= ac_build_imin(&ctx
->ac
, result
, src
[2]);
1032 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1033 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1034 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1035 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1038 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1039 result
= ac_build_umax(&ctx
->ac
, result
, src
[2]);
1042 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1043 result
= ac_build_imax(&ctx
->ac
, result
, src
[2]);
1045 case nir_op_fmed3
: {
1046 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1047 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
1048 src
[2] = ac_to_float(&ctx
->ac
, src
[2]);
1049 result
= ac_build_fmed3(&ctx
->ac
, src
[0], src
[1], src
[2],
1050 instr
->dest
.dest
.ssa
.bit_size
);
1053 case nir_op_imed3
: {
1054 LLVMValueRef tmp1
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1055 LLVMValueRef tmp2
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1056 tmp2
= ac_build_imin(&ctx
->ac
, tmp2
, src
[2]);
1057 result
= ac_build_imax(&ctx
->ac
, tmp1
, tmp2
);
1060 case nir_op_umed3
: {
1061 LLVMValueRef tmp1
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1062 LLVMValueRef tmp2
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1063 tmp2
= ac_build_umin(&ctx
->ac
, tmp2
, src
[2]);
1064 result
= ac_build_umax(&ctx
->ac
, tmp1
, tmp2
);
1069 fprintf(stderr
, "Unknown NIR alu instr: ");
1070 nir_print_instr(&instr
->instr
, stderr
);
1071 fprintf(stderr
, "\n");
1076 assert(instr
->dest
.dest
.is_ssa
);
1077 result
= ac_to_integer_or_pointer(&ctx
->ac
, result
);
1078 ctx
->ssa_defs
[instr
->dest
.dest
.ssa
.index
] = result
;
1082 static void visit_load_const(struct ac_nir_context
*ctx
,
1083 const nir_load_const_instr
*instr
)
1085 LLVMValueRef values
[4], value
= NULL
;
1086 LLVMTypeRef element_type
=
1087 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
1089 for (unsigned i
= 0; i
< instr
->def
.num_components
; ++i
) {
1090 switch (instr
->def
.bit_size
) {
1092 values
[i
] = LLVMConstInt(element_type
,
1093 instr
->value
[i
].u8
, false);
1096 values
[i
] = LLVMConstInt(element_type
,
1097 instr
->value
[i
].u16
, false);
1100 values
[i
] = LLVMConstInt(element_type
,
1101 instr
->value
[i
].u32
, false);
1104 values
[i
] = LLVMConstInt(element_type
,
1105 instr
->value
[i
].u64
, false);
1109 "unsupported nir load_const bit_size: %d\n",
1110 instr
->def
.bit_size
);
1114 if (instr
->def
.num_components
> 1) {
1115 value
= LLVMConstVector(values
, instr
->def
.num_components
);
1119 ctx
->ssa_defs
[instr
->def
.index
] = value
;
1123 get_buffer_size(struct ac_nir_context
*ctx
, LLVMValueRef descriptor
, bool in_elements
)
1126 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1127 LLVMConstInt(ctx
->ac
.i32
, 2, false), "");
1130 if (ctx
->ac
.chip_class
== GFX8
&& in_elements
) {
1131 /* On GFX8, the descriptor contains the size in bytes,
1132 * but TXQ must return the size in elements.
1133 * The stride is always non-zero for resources using TXQ.
1135 LLVMValueRef stride
=
1136 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1138 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
,
1139 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
1140 stride
= LLVMBuildAnd(ctx
->ac
.builder
, stride
,
1141 LLVMConstInt(ctx
->ac
.i32
, 0x3fff, false), "");
1143 size
= LLVMBuildUDiv(ctx
->ac
.builder
, size
, stride
, "");
1148 /* Gather4 should follow the same rules as bilinear filtering, but the hardware
1149 * incorrectly forces nearest filtering if the texture format is integer.
1150 * The only effect it has on Gather4, which always returns 4 texels for
1151 * bilinear filtering, is that the final coordinates are off by 0.5 of
1154 * The workaround is to subtract 0.5 from the unnormalized coordinates,
1155 * or (0.5 / size) from the normalized coordinates.
1157 * However, cube textures with 8_8_8_8 data formats require a different
1158 * workaround of overriding the num format to USCALED/SSCALED. This would lose
1159 * precision in 32-bit data formats, so it needs to be applied dynamically at
1160 * runtime. In this case, return an i1 value that indicates whether the
1161 * descriptor was overridden (and hence a fixup of the sampler result is needed).
1163 static LLVMValueRef
lower_gather4_integer(struct ac_llvm_context
*ctx
,
1165 struct ac_image_args
*args
,
1166 const nir_tex_instr
*instr
)
1168 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1169 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1170 LLVMValueRef wa_8888
= NULL
;
1171 LLVMValueRef half_texel
[2];
1172 LLVMValueRef result
;
1174 assert(stype
== GLSL_TYPE_INT
|| stype
== GLSL_TYPE_UINT
);
1176 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1177 LLVMValueRef formats
;
1178 LLVMValueRef data_format
;
1179 LLVMValueRef wa_formats
;
1181 formats
= LLVMBuildExtractElement(ctx
->builder
, args
->resource
, ctx
->i32_1
, "");
1183 data_format
= LLVMBuildLShr(ctx
->builder
, formats
,
1184 LLVMConstInt(ctx
->i32
, 20, false), "");
1185 data_format
= LLVMBuildAnd(ctx
->builder
, data_format
,
1186 LLVMConstInt(ctx
->i32
, (1u << 6) - 1, false), "");
1187 wa_8888
= LLVMBuildICmp(
1188 ctx
->builder
, LLVMIntEQ
, data_format
,
1189 LLVMConstInt(ctx
->i32
, V_008F14_IMG_DATA_FORMAT_8_8_8_8
, false),
1192 uint32_t wa_num_format
=
1193 stype
== GLSL_TYPE_UINT
?
1194 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_USCALED
) :
1195 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_SSCALED
);
1196 wa_formats
= LLVMBuildAnd(ctx
->builder
, formats
,
1197 LLVMConstInt(ctx
->i32
, C_008F14_NUM_FORMAT
, false),
1199 wa_formats
= LLVMBuildOr(ctx
->builder
, wa_formats
,
1200 LLVMConstInt(ctx
->i32
, wa_num_format
, false), "");
1202 formats
= LLVMBuildSelect(ctx
->builder
, wa_8888
, wa_formats
, formats
, "");
1203 args
->resource
= LLVMBuildInsertElement(
1204 ctx
->builder
, args
->resource
, formats
, ctx
->i32_1
, "");
1207 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
) {
1209 half_texel
[0] = half_texel
[1] = LLVMConstReal(ctx
->f32
, -0.5);
1211 struct ac_image_args resinfo
= {};
1212 LLVMBasicBlockRef bbs
[2];
1214 LLVMValueRef unnorm
= NULL
;
1215 LLVMValueRef default_offset
= ctx
->f32_0
;
1216 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
&&
1218 /* In vulkan, whether the sampler uses unnormalized
1219 * coordinates or not is a dynamic property of the
1220 * sampler. Hence, to figure out whether or not we
1221 * need to divide by the texture size, we need to test
1222 * the sampler at runtime. This tests the bit set by
1223 * radv_init_sampler().
1225 LLVMValueRef sampler0
=
1226 LLVMBuildExtractElement(ctx
->builder
, args
->sampler
, ctx
->i32_0
, "");
1227 sampler0
= LLVMBuildLShr(ctx
->builder
, sampler0
,
1228 LLVMConstInt(ctx
->i32
, 15, false), "");
1229 sampler0
= LLVMBuildAnd(ctx
->builder
, sampler0
, ctx
->i32_1
, "");
1230 unnorm
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, sampler0
, ctx
->i32_1
, "");
1231 default_offset
= LLVMConstReal(ctx
->f32
, -0.5);
1234 bbs
[0] = LLVMGetInsertBlock(ctx
->builder
);
1235 if (wa_8888
|| unnorm
) {
1236 assert(!(wa_8888
&& unnorm
));
1237 LLVMValueRef not_needed
= wa_8888
? wa_8888
: unnorm
;
1238 /* Skip the texture size query entirely if we don't need it. */
1239 ac_build_ifcc(ctx
, LLVMBuildNot(ctx
->builder
, not_needed
, ""), 2000);
1240 bbs
[1] = LLVMGetInsertBlock(ctx
->builder
);
1243 /* Query the texture size. */
1244 resinfo
.dim
= ac_get_sampler_dim(ctx
->chip_class
, instr
->sampler_dim
, instr
->is_array
);
1245 resinfo
.opcode
= ac_image_get_resinfo
;
1246 resinfo
.dmask
= 0xf;
1247 resinfo
.lod
= ctx
->i32_0
;
1248 resinfo
.resource
= args
->resource
;
1249 resinfo
.attributes
= AC_FUNC_ATTR_READNONE
;
1250 LLVMValueRef size
= ac_build_image_opcode(ctx
, &resinfo
);
1252 /* Compute -0.5 / size. */
1253 for (unsigned c
= 0; c
< 2; c
++) {
1255 LLVMBuildExtractElement(ctx
->builder
, size
,
1256 LLVMConstInt(ctx
->i32
, c
, 0), "");
1257 half_texel
[c
] = LLVMBuildUIToFP(ctx
->builder
, half_texel
[c
], ctx
->f32
, "");
1258 half_texel
[c
] = ac_build_fdiv(ctx
, ctx
->f32_1
, half_texel
[c
]);
1259 half_texel
[c
] = LLVMBuildFMul(ctx
->builder
, half_texel
[c
],
1260 LLVMConstReal(ctx
->f32
, -0.5), "");
1263 if (wa_8888
|| unnorm
) {
1264 ac_build_endif(ctx
, 2000);
1266 for (unsigned c
= 0; c
< 2; c
++) {
1267 LLVMValueRef values
[2] = { default_offset
, half_texel
[c
] };
1268 half_texel
[c
] = ac_build_phi(ctx
, ctx
->f32
, 2,
1274 for (unsigned c
= 0; c
< 2; c
++) {
1276 tmp
= LLVMBuildBitCast(ctx
->builder
, args
->coords
[c
], ctx
->f32
, "");
1277 args
->coords
[c
] = LLVMBuildFAdd(ctx
->builder
, tmp
, half_texel
[c
], "");
1280 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1281 result
= ac_build_image_opcode(ctx
, args
);
1283 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1284 LLVMValueRef tmp
, tmp2
;
1286 /* if the cube workaround is in place, f2i the result. */
1287 for (unsigned c
= 0; c
< 4; c
++) {
1288 tmp
= LLVMBuildExtractElement(ctx
->builder
, result
, LLVMConstInt(ctx
->i32
, c
, false), "");
1289 if (stype
== GLSL_TYPE_UINT
)
1290 tmp2
= LLVMBuildFPToUI(ctx
->builder
, tmp
, ctx
->i32
, "");
1292 tmp2
= LLVMBuildFPToSI(ctx
->builder
, tmp
, ctx
->i32
, "");
1293 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->i32
, "");
1294 tmp2
= LLVMBuildBitCast(ctx
->builder
, tmp2
, ctx
->i32
, "");
1295 tmp
= LLVMBuildSelect(ctx
->builder
, wa_8888
, tmp2
, tmp
, "");
1296 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f32
, "");
1297 result
= LLVMBuildInsertElement(ctx
->builder
, result
, tmp
, LLVMConstInt(ctx
->i32
, c
, false), "");
1303 static nir_deref_instr
*get_tex_texture_deref(const nir_tex_instr
*instr
)
1305 nir_deref_instr
*texture_deref_instr
= NULL
;
1307 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
1308 switch (instr
->src
[i
].src_type
) {
1309 case nir_tex_src_texture_deref
:
1310 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
1316 return texture_deref_instr
;
1319 static LLVMValueRef
build_tex_intrinsic(struct ac_nir_context
*ctx
,
1320 const nir_tex_instr
*instr
,
1321 struct ac_image_args
*args
)
1323 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
1324 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
1326 return ac_build_buffer_load_format(&ctx
->ac
,
1330 util_last_bit(mask
),
1334 args
->opcode
= ac_image_sample
;
1336 switch (instr
->op
) {
1338 case nir_texop_txf_ms
:
1339 case nir_texop_samples_identical
:
1340 args
->opcode
= args
->level_zero
||
1341 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
?
1342 ac_image_load
: ac_image_load_mip
;
1343 args
->level_zero
= false;
1346 case nir_texop_query_levels
:
1347 args
->opcode
= ac_image_get_resinfo
;
1349 args
->lod
= ctx
->ac
.i32_0
;
1350 args
->level_zero
= false;
1353 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1355 args
->level_zero
= true;
1359 args
->opcode
= ac_image_gather4
;
1360 args
->level_zero
= true;
1363 args
->opcode
= ac_image_get_lod
;
1369 if (instr
->op
== nir_texop_tg4
&& ctx
->ac
.chip_class
<= GFX8
) {
1370 nir_deref_instr
*texture_deref_instr
= get_tex_texture_deref(instr
);
1371 nir_variable
*var
= nir_deref_instr_get_variable(texture_deref_instr
);
1372 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1373 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1374 if (stype
== GLSL_TYPE_UINT
|| stype
== GLSL_TYPE_INT
) {
1375 return lower_gather4_integer(&ctx
->ac
, var
, args
, instr
);
1379 /* Fixup for GFX9 which allocates 1D textures as 2D. */
1380 if (instr
->op
== nir_texop_lod
&& ctx
->ac
.chip_class
== GFX9
) {
1381 if ((args
->dim
== ac_image_2darray
||
1382 args
->dim
== ac_image_2d
) && !args
->coords
[1]) {
1383 args
->coords
[1] = ctx
->ac
.i32_0
;
1387 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1388 bool cs_derivs
= ctx
->stage
== MESA_SHADER_COMPUTE
&&
1389 ctx
->info
->cs
.derivative_group
!= DERIVATIVE_GROUP_NONE
;
1390 if (ctx
->stage
== MESA_SHADER_FRAGMENT
|| cs_derivs
) {
1391 /* Prevent texture instructions with implicit derivatives from being
1392 * sinked into branches. */
1393 switch (instr
->op
) {
1397 args
->attributes
|= AC_FUNC_ATTR_CONVERGENT
;
1404 return ac_build_image_opcode(&ctx
->ac
, args
);
1407 static LLVMValueRef
visit_vulkan_resource_reindex(struct ac_nir_context
*ctx
,
1408 nir_intrinsic_instr
*instr
)
1410 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
1411 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
1413 LLVMValueRef result
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
1414 LLVMSetMetadata(result
, ctx
->ac
.uniform_md_kind
, ctx
->ac
.empty_md
);
1418 static LLVMValueRef
visit_load_push_constant(struct ac_nir_context
*ctx
,
1419 nir_intrinsic_instr
*instr
)
1421 LLVMValueRef ptr
, addr
;
1422 LLVMValueRef src0
= get_src(ctx
, instr
->src
[0]);
1423 unsigned index
= nir_intrinsic_base(instr
);
1425 addr
= LLVMConstInt(ctx
->ac
.i32
, index
, 0);
1426 addr
= LLVMBuildAdd(ctx
->ac
.builder
, addr
, src0
, "");
1428 /* Load constant values from user SGPRS when possible, otherwise
1429 * fallback to the default path that loads directly from memory.
1431 if (LLVMIsConstant(src0
) &&
1432 instr
->dest
.ssa
.bit_size
== 32) {
1433 unsigned count
= instr
->dest
.ssa
.num_components
;
1434 unsigned offset
= index
;
1436 offset
+= LLVMConstIntGetZExtValue(src0
);
1439 offset
-= ctx
->args
->base_inline_push_consts
;
1441 unsigned num_inline_push_consts
= ctx
->args
->num_inline_push_consts
;
1442 if (offset
+ count
<= num_inline_push_consts
) {
1443 LLVMValueRef push_constants
[num_inline_push_consts
];
1444 for (unsigned i
= 0; i
< num_inline_push_consts
; i
++)
1445 push_constants
[i
] = ac_get_arg(&ctx
->ac
,
1446 ctx
->args
->inline_push_consts
[i
]);
1447 return ac_build_gather_values(&ctx
->ac
,
1448 push_constants
+ offset
,
1453 ptr
= LLVMBuildGEP(ctx
->ac
.builder
,
1454 ac_get_arg(&ctx
->ac
, ctx
->args
->push_constants
), &addr
, 1, "");
1456 if (instr
->dest
.ssa
.bit_size
== 8) {
1457 unsigned load_dwords
= instr
->dest
.ssa
.num_components
> 1 ? 2 : 1;
1458 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), 4 * load_dwords
);
1459 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1460 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1462 LLVMValueRef params
[3];
1463 if (load_dwords
> 1) {
1464 LLVMValueRef res_vec
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(ctx
->ac
.i32
, 2), "");
1465 params
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
1466 params
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 0, false), "");
1468 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, ctx
->ac
.i32
, "");
1469 params
[0] = ctx
->ac
.i32_0
;
1473 res
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.alignbyte", ctx
->ac
.i32
, params
, 3, 0);
1475 res
= LLVMBuildTrunc(ctx
->ac
.builder
, res
, LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.num_components
* 8), "");
1476 if (instr
->dest
.ssa
.num_components
> 1)
1477 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), instr
->dest
.ssa
.num_components
), "");
1479 } else if (instr
->dest
.ssa
.bit_size
== 16) {
1480 unsigned load_dwords
= instr
->dest
.ssa
.num_components
/ 2 + 1;
1481 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt16TypeInContext(ctx
->ac
.context
), 2 * load_dwords
);
1482 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1483 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1484 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, vec_type
, "");
1485 LLVMValueRef cond
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, ctx
->ac
.i32_1
, "");
1486 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->ac
.i1
, "");
1487 LLVMValueRef mask
[] = { LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
1488 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
1489 LLVMConstInt(ctx
->ac
.i32
, 4, false)};
1490 LLVMValueRef swizzle_aligned
= LLVMConstVector(&mask
[0], instr
->dest
.ssa
.num_components
);
1491 LLVMValueRef swizzle_unaligned
= LLVMConstVector(&mask
[1], instr
->dest
.ssa
.num_components
);
1492 LLVMValueRef shuffle_aligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_aligned
, "");
1493 LLVMValueRef shuffle_unaligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_unaligned
, "");
1494 res
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, shuffle_unaligned
, shuffle_aligned
, "");
1495 return LLVMBuildBitCast(ctx
->ac
.builder
, res
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1498 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, get_def_type(ctx
, &instr
->dest
.ssa
));
1500 return LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1503 static LLVMValueRef
visit_get_buffer_size(struct ac_nir_context
*ctx
,
1504 const nir_intrinsic_instr
*instr
)
1506 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
1508 return get_buffer_size(ctx
, ctx
->abi
->load_ssbo(ctx
->abi
, index
, false), false);
1511 static uint32_t widen_mask(uint32_t mask
, unsigned multiplier
)
1513 uint32_t new_mask
= 0;
1514 for(unsigned i
= 0; i
< 32 && (1u << i
) <= mask
; ++i
)
1515 if (mask
& (1u << i
))
1516 new_mask
|= ((1u << multiplier
) - 1u) << (i
* multiplier
);
1520 static LLVMValueRef
extract_vector_range(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
1521 unsigned start
, unsigned count
)
1523 LLVMValueRef mask
[] = {
1524 ctx
->i32_0
, ctx
->i32_1
,
1525 LLVMConstInt(ctx
->i32
, 2, false), LLVMConstInt(ctx
->i32
, 3, false) };
1527 unsigned src_elements
= ac_get_llvm_num_components(src
);
1529 if (count
== src_elements
) {
1532 } else if (count
== 1) {
1533 assert(start
< src_elements
);
1534 return LLVMBuildExtractElement(ctx
->builder
, src
, mask
[start
], "");
1536 assert(start
+ count
<= src_elements
);
1538 LLVMValueRef swizzle
= LLVMConstVector(&mask
[start
], count
);
1539 return LLVMBuildShuffleVector(ctx
->builder
, src
, src
, swizzle
, "");
1543 static unsigned get_cache_policy(struct ac_nir_context
*ctx
,
1544 enum gl_access_qualifier access
,
1545 bool may_store_unaligned
,
1546 bool writeonly_memory
)
1548 unsigned cache_policy
= 0;
1550 /* GFX6 has a TC L1 bug causing corruption of 8bit/16bit stores. All
1551 * store opcodes not aligned to a dword are affected. The only way to
1552 * get unaligned stores is through shader images.
1554 if (((may_store_unaligned
&& ctx
->ac
.chip_class
== GFX6
) ||
1555 /* If this is write-only, don't keep data in L1 to prevent
1556 * evicting L1 cache lines that may be needed by other
1560 access
& (ACCESS_COHERENT
| ACCESS_VOLATILE
))) {
1561 cache_policy
|= ac_glc
;
1564 if (access
& ACCESS_STREAM_CACHE_POLICY
)
1565 cache_policy
|= ac_slc
;
1567 return cache_policy
;
1570 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1571 nir_intrinsic_instr
*instr
)
1573 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1574 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1575 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1576 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1577 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
1578 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, writeonly_memory
);
1580 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1581 get_src(ctx
, instr
->src
[1]), true);
1582 LLVMValueRef base_data
= src_data
;
1583 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1584 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1588 LLVMValueRef data
, offset
;
1589 LLVMTypeRef data_type
;
1591 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1593 /* Due to an LLVM limitation with LLVM < 9, split 3-element
1594 * writes into a 2-element and a 1-element write. */
1596 (elem_size_bytes
!= 4 || !ac_has_vec3_support(ctx
->ac
.chip_class
, false))) {
1597 writemask
|= 1 << (start
+ 2);
1600 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1602 /* we can only store 4 DWords at the same time.
1603 * can only happen for 64 Bit vectors. */
1604 if (num_bytes
> 16) {
1605 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1610 /* check alignment of 16 Bit stores */
1611 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1612 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1616 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1618 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1619 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1621 if (num_bytes
== 1) {
1622 ac_build_tbuffer_store_byte(&ctx
->ac
, rsrc
, data
,
1623 offset
, ctx
->ac
.i32_0
,
1625 } else if (num_bytes
== 2) {
1626 ac_build_tbuffer_store_short(&ctx
->ac
, rsrc
, data
,
1627 offset
, ctx
->ac
.i32_0
,
1630 int num_channels
= num_bytes
/ 4;
1632 switch (num_bytes
) {
1633 case 16: /* v4f32 */
1634 data_type
= ctx
->ac
.v4f32
;
1636 case 12: /* v3f32 */
1637 data_type
= ctx
->ac
.v3f32
;
1640 data_type
= ctx
->ac
.v2f32
;
1643 data_type
= ctx
->ac
.f32
;
1646 unreachable("Malformed vector store.");
1648 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1650 ac_build_buffer_store_dword(&ctx
->ac
, rsrc
, data
,
1651 num_channels
, offset
,
1658 static LLVMValueRef
emit_ssbo_comp_swap_64(struct ac_nir_context
*ctx
,
1659 LLVMValueRef descriptor
,
1660 LLVMValueRef offset
,
1661 LLVMValueRef compare
,
1662 LLVMValueRef exchange
)
1664 LLVMBasicBlockRef start_block
= NULL
, then_block
= NULL
;
1665 if (ctx
->abi
->robust_buffer_access
) {
1666 LLVMValueRef size
= ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 2);
1668 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
, offset
, size
, "");
1669 start_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1671 ac_build_ifcc(&ctx
->ac
, cond
, -1);
1673 then_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1676 LLVMValueRef ptr_parts
[2] = {
1677 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 0),
1678 LLVMBuildAnd(ctx
->ac
.builder
,
1679 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 1),
1680 LLVMConstInt(ctx
->ac
.i32
, 65535, 0), "")
1683 ptr_parts
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i16
, "");
1684 ptr_parts
[1] = LLVMBuildSExt(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i32
, "");
1686 offset
= LLVMBuildZExt(ctx
->ac
.builder
, offset
, ctx
->ac
.i64
, "");
1688 LLVMValueRef ptr
= ac_build_gather_values(&ctx
->ac
, ptr_parts
, 2);
1689 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ctx
->ac
.i64
, "");
1690 ptr
= LLVMBuildAdd(ctx
->ac
.builder
, ptr
, offset
, "");
1691 ptr
= LLVMBuildIntToPtr(ctx
->ac
.builder
, ptr
, LLVMPointerType(ctx
->ac
.i64
, AC_ADDR_SPACE_GLOBAL
), "");
1693 LLVMValueRef result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, compare
, exchange
, "singlethread-one-as");
1694 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
1696 if (ctx
->abi
->robust_buffer_access
) {
1697 ac_build_endif(&ctx
->ac
, -1);
1699 LLVMBasicBlockRef incoming_blocks
[2] = {
1704 LLVMValueRef incoming_values
[2] = {
1705 LLVMConstInt(ctx
->ac
.i64
, 0, 0),
1708 LLVMValueRef ret
= LLVMBuildPhi(ctx
->ac
.builder
, ctx
->ac
.i64
, "");
1709 LLVMAddIncoming(ret
, incoming_values
, incoming_blocks
, 2);
1716 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1717 const nir_intrinsic_instr
*instr
)
1719 LLVMTypeRef return_type
= LLVMTypeOf(get_src(ctx
, instr
->src
[2]));
1721 char name
[64], type
[8];
1722 LLVMValueRef params
[6], descriptor
;
1725 switch (instr
->intrinsic
) {
1726 case nir_intrinsic_ssbo_atomic_add
:
1729 case nir_intrinsic_ssbo_atomic_imin
:
1732 case nir_intrinsic_ssbo_atomic_umin
:
1735 case nir_intrinsic_ssbo_atomic_imax
:
1738 case nir_intrinsic_ssbo_atomic_umax
:
1741 case nir_intrinsic_ssbo_atomic_and
:
1744 case nir_intrinsic_ssbo_atomic_or
:
1747 case nir_intrinsic_ssbo_atomic_xor
:
1750 case nir_intrinsic_ssbo_atomic_exchange
:
1753 case nir_intrinsic_ssbo_atomic_comp_swap
:
1760 descriptor
= ctx
->abi
->load_ssbo(ctx
->abi
,
1761 get_src(ctx
, instr
->src
[0]),
1764 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
&&
1765 return_type
== ctx
->ac
.i64
) {
1766 return emit_ssbo_comp_swap_64(ctx
, descriptor
,
1767 get_src(ctx
, instr
->src
[1]),
1768 get_src(ctx
, instr
->src
[2]),
1769 get_src(ctx
, instr
->src
[3]));
1771 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1772 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1774 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1775 params
[arg_count
++] = descriptor
;
1777 if (LLVM_VERSION_MAJOR
>= 9) {
1778 /* XXX: The new raw/struct atomic intrinsics are buggy with
1779 * LLVM 8, see r358579.
1781 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1782 params
[arg_count
++] = ctx
->ac
.i32_0
; /* soffset */
1783 params
[arg_count
++] = ctx
->ac
.i32_0
; /* slc */
1785 ac_build_type_name_for_intr(return_type
, type
, sizeof(type
));
1786 snprintf(name
, sizeof(name
),
1787 "llvm.amdgcn.raw.buffer.atomic.%s.%s", op
, type
);
1789 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1790 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1791 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1793 assert(return_type
== ctx
->ac
.i32
);
1794 snprintf(name
, sizeof(name
),
1795 "llvm.amdgcn.buffer.atomic.%s", op
);
1798 return ac_build_intrinsic(&ctx
->ac
, name
, return_type
, params
,
1802 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
1803 const nir_intrinsic_instr
*instr
)
1805 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1806 int num_components
= instr
->num_components
;
1807 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1808 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, false);
1810 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1811 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1812 get_src(ctx
, instr
->src
[0]), false);
1813 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
1815 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1816 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
1818 LLVMValueRef results
[4];
1819 for (int i
= 0; i
< num_components
;) {
1820 int num_elems
= num_components
- i
;
1821 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
1823 if (num_elems
* elem_size_bytes
> 16)
1824 num_elems
= 16 / elem_size_bytes
;
1825 int load_bytes
= num_elems
* elem_size_bytes
;
1827 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
1831 if (load_bytes
== 1) {
1832 ret
= ac_build_tbuffer_load_byte(&ctx
->ac
,
1838 } else if (load_bytes
== 2) {
1839 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
1846 int num_channels
= util_next_power_of_two(load_bytes
) / 4;
1847 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
1849 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_channels
,
1850 vindex
, offset
, immoffset
, 0,
1851 cache_policy
, can_speculate
, false);
1854 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
1855 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
1856 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
1858 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
1859 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
1861 for (unsigned j
= 0; j
< num_elems
; j
++) {
1862 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
1867 return ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1870 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
1871 const nir_intrinsic_instr
*instr
)
1874 LLVMValueRef rsrc
= get_src(ctx
, instr
->src
[0]);
1875 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1876 int num_components
= instr
->num_components
;
1878 if (ctx
->abi
->load_ubo
)
1879 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
1881 if (instr
->dest
.ssa
.bit_size
== 64)
1882 num_components
*= 2;
1884 if (instr
->dest
.ssa
.bit_size
== 16 || instr
->dest
.ssa
.bit_size
== 8) {
1885 unsigned load_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1886 LLVMValueRef results
[num_components
];
1887 for (unsigned i
= 0; i
< num_components
; ++i
) {
1888 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
,
1891 if (load_bytes
== 1) {
1892 results
[i
] = ac_build_tbuffer_load_byte(&ctx
->ac
,
1899 assert(load_bytes
== 2);
1900 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
1908 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1910 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
1911 NULL
, 0, 0, true, true);
1913 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
1916 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
1917 get_def_type(ctx
, &instr
->dest
.ssa
), "");
1921 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
1922 bool vs_in
, unsigned *vertex_index_out
,
1923 LLVMValueRef
*vertex_index_ref
,
1924 unsigned *const_out
, LLVMValueRef
*indir_out
)
1926 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
1927 nir_deref_path path
;
1928 unsigned idx_lvl
= 1;
1930 nir_deref_path_init(&path
, instr
, NULL
);
1932 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
1933 if (vertex_index_ref
) {
1934 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
1935 if (vertex_index_out
)
1936 *vertex_index_out
= 0;
1938 *vertex_index_out
= nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
1943 uint32_t const_offset
= 0;
1944 LLVMValueRef offset
= NULL
;
1946 if (var
->data
.compact
) {
1947 assert(instr
->deref_type
== nir_deref_type_array
);
1948 const_offset
= nir_src_as_uint(instr
->arr
.index
);
1952 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
1953 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
1954 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
1955 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
1957 for (unsigned i
= 0; i
< index
; i
++) {
1958 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
1959 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
1961 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
1962 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
1963 if (nir_src_is_const(path
.path
[idx_lvl
]->arr
.index
)) {
1964 const_offset
+= size
*
1965 nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
1967 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
1968 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
1970 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
1975 unreachable("Uhandled deref type in get_deref_instr_offset");
1979 nir_deref_path_finish(&path
);
1981 if (const_offset
&& offset
)
1982 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
1983 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
1986 *const_out
= const_offset
;
1987 *indir_out
= offset
;
1990 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
1991 nir_intrinsic_instr
*instr
,
1994 LLVMValueRef result
;
1995 LLVMValueRef vertex_index
= NULL
;
1996 LLVMValueRef indir_index
= NULL
;
1997 unsigned const_index
= 0;
1999 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
2001 unsigned location
= var
->data
.location
;
2002 unsigned driver_location
= var
->data
.driver_location
;
2003 const bool is_patch
= var
->data
.patch
;
2004 const bool is_compact
= var
->data
.compact
;
2006 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2007 false, NULL
, is_patch
? NULL
: &vertex_index
,
2008 &const_index
, &indir_index
);
2010 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2012 LLVMTypeRef src_component_type
;
2013 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
2014 src_component_type
= LLVMGetElementType(dest_type
);
2016 src_component_type
= dest_type
;
2018 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
2019 vertex_index
, indir_index
,
2020 const_index
, location
, driver_location
,
2021 var
->data
.location_frac
,
2022 instr
->num_components
,
2023 is_patch
, is_compact
, load_inputs
);
2024 if (instr
->dest
.ssa
.bit_size
== 16) {
2025 result
= ac_to_integer(&ctx
->ac
, result
);
2026 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
2028 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
2032 type_scalar_size_bytes(const struct glsl_type
*type
)
2034 assert(glsl_type_is_vector_or_scalar(type
) ||
2035 glsl_type_is_matrix(type
));
2036 return glsl_type_is_boolean(type
) ? 4 : glsl_get_bit_size(type
) / 8;
2039 static LLVMValueRef
visit_load_var(struct ac_nir_context
*ctx
,
2040 nir_intrinsic_instr
*instr
)
2042 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2043 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2045 LLVMValueRef values
[8];
2047 int ve
= instr
->dest
.ssa
.num_components
;
2049 LLVMValueRef indir_index
;
2051 unsigned const_index
;
2052 unsigned stride
= 4;
2053 int mode
= deref
->mode
;
2056 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
2057 var
->data
.mode
== nir_var_shader_in
;
2058 idx
= var
->data
.driver_location
;
2059 comp
= var
->data
.location_frac
;
2060 mode
= var
->data
.mode
;
2062 get_deref_offset(ctx
, deref
, vs_in
, NULL
, NULL
,
2063 &const_index
, &indir_index
);
2065 if (var
->data
.compact
) {
2067 const_index
+= comp
;
2072 if (instr
->dest
.ssa
.bit_size
== 64 &&
2073 (deref
->mode
== nir_var_shader_in
||
2074 deref
->mode
== nir_var_shader_out
||
2075 deref
->mode
== nir_var_function_temp
))
2079 case nir_var_shader_in
:
2080 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
2081 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
2082 return load_tess_varyings(ctx
, instr
, true);
2085 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
2086 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
2087 LLVMValueRef indir_index
;
2088 unsigned const_index
, vertex_index
;
2089 get_deref_offset(ctx
, deref
, false, &vertex_index
, NULL
,
2090 &const_index
, &indir_index
);
2091 assert(indir_index
== NULL
);
2093 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
2094 var
->data
.driver_location
,
2095 var
->data
.location_frac
,
2096 instr
->num_components
, vertex_index
, const_index
, type
);
2099 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2101 unsigned count
= glsl_count_attribute_slots(
2103 ctx
->stage
== MESA_SHADER_VERTEX
);
2105 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2106 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
2107 stride
, false, true);
2109 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2113 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
2116 case nir_var_function_temp
:
2117 for (unsigned chan
= 0; chan
< ve
; chan
++) {
2119 unsigned count
= glsl_count_attribute_slots(
2122 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2123 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2124 stride
, true, true);
2126 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2130 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
2134 case nir_var_mem_shared
: {
2135 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2136 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2137 return LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2138 get_def_type(ctx
, &instr
->dest
.ssa
),
2141 case nir_var_shader_out
:
2142 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2143 return load_tess_varyings(ctx
, instr
, false);
2146 if (ctx
->stage
== MESA_SHADER_FRAGMENT
&&
2147 var
->data
.fb_fetch_output
&&
2148 ctx
->abi
->emit_fbfetch
)
2149 return ctx
->abi
->emit_fbfetch(ctx
->abi
);
2151 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2153 unsigned count
= glsl_count_attribute_slots(
2156 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2157 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2158 stride
, true, true);
2160 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2164 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
2165 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
2170 case nir_var_mem_global
: {
2171 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2172 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2173 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2174 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2176 LLVMTypeRef result_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2177 if (stride
!= natural_stride
) {
2178 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(result_type
),
2179 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2180 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2182 for (unsigned i
= 0; i
< instr
->dest
.ssa
.num_components
; ++i
) {
2183 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, i
* stride
/ natural_stride
, 0);
2184 values
[i
] = LLVMBuildLoad(ctx
->ac
.builder
,
2185 ac_build_gep_ptr(&ctx
->ac
, address
, offset
), "");
2187 return ac_build_gather_values(&ctx
->ac
, values
, instr
->dest
.ssa
.num_components
);
2189 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2190 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2191 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2192 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2197 unreachable("unhandle variable mode");
2199 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
2200 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2204 visit_store_var(struct ac_nir_context
*ctx
,
2205 nir_intrinsic_instr
*instr
)
2207 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2208 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2210 LLVMValueRef temp_ptr
, value
;
2213 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
2214 int writemask
= instr
->const_index
[0];
2215 LLVMValueRef indir_index
;
2216 unsigned const_index
;
2219 get_deref_offset(ctx
, deref
, false,
2220 NULL
, NULL
, &const_index
, &indir_index
);
2221 idx
= var
->data
.driver_location
;
2222 comp
= var
->data
.location_frac
;
2224 if (var
->data
.compact
) {
2225 const_index
+= comp
;
2230 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64 &&
2231 (deref
->mode
== nir_var_shader_out
||
2232 deref
->mode
== nir_var_function_temp
)) {
2234 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2235 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2238 writemask
= widen_mask(writemask
, 2);
2241 writemask
= writemask
<< comp
;
2243 switch (deref
->mode
) {
2244 case nir_var_shader_out
:
2246 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2247 LLVMValueRef vertex_index
= NULL
;
2248 LLVMValueRef indir_index
= NULL
;
2249 unsigned const_index
= 0;
2250 const bool is_patch
= var
->data
.patch
;
2252 get_deref_offset(ctx
, deref
, false, NULL
,
2253 is_patch
? NULL
: &vertex_index
,
2254 &const_index
, &indir_index
);
2256 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2257 vertex_index
, indir_index
,
2258 const_index
, src
, writemask
);
2262 for (unsigned chan
= 0; chan
< 8; chan
++) {
2264 if (!(writemask
& (1 << chan
)))
2267 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2269 if (var
->data
.compact
)
2272 unsigned count
= glsl_count_attribute_slots(
2275 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2276 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2277 stride
, true, true);
2279 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2280 value
, indir_index
, "");
2281 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2282 count
, stride
, tmp_vec
);
2285 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2287 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2291 case nir_var_function_temp
:
2292 for (unsigned chan
= 0; chan
< 8; chan
++) {
2293 if (!(writemask
& (1 << chan
)))
2296 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2298 unsigned count
= glsl_count_attribute_slots(
2301 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2302 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2305 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2306 value
, indir_index
, "");
2307 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2310 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2312 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2317 case nir_var_mem_global
:
2318 case nir_var_mem_shared
: {
2319 int writemask
= instr
->const_index
[0];
2320 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2321 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2323 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2324 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2325 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2327 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2328 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2329 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2331 if (writemask
== (1u << ac_get_llvm_num_components(val
)) - 1 &&
2332 stride
== natural_stride
) {
2333 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2334 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2335 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2337 val
= LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2338 LLVMGetElementType(LLVMTypeOf(address
)), "");
2339 LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2341 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(LLVMTypeOf(val
)),
2342 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2343 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2344 for (unsigned chan
= 0; chan
< 4; chan
++) {
2345 if (!(writemask
& (1 << chan
)))
2348 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, chan
* stride
/ natural_stride
, 0);
2350 LLVMValueRef ptr
= ac_build_gep_ptr(&ctx
->ac
, address
, offset
);
2351 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2353 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2354 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2355 LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2366 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2369 case GLSL_SAMPLER_DIM_BUF
:
2371 case GLSL_SAMPLER_DIM_1D
:
2372 return array
? 2 : 1;
2373 case GLSL_SAMPLER_DIM_2D
:
2374 return array
? 3 : 2;
2375 case GLSL_SAMPLER_DIM_MS
:
2376 return array
? 4 : 3;
2377 case GLSL_SAMPLER_DIM_3D
:
2378 case GLSL_SAMPLER_DIM_CUBE
:
2380 case GLSL_SAMPLER_DIM_RECT
:
2381 case GLSL_SAMPLER_DIM_SUBPASS
:
2383 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2391 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2392 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2393 LLVMValueRef coord_z
,
2394 LLVMValueRef sample_index
,
2395 LLVMValueRef fmask_desc_ptr
)
2397 unsigned sample_chan
= coord_z
? 3 : 2;
2398 LLVMValueRef addr
[4] = {coord_x
, coord_y
, coord_z
};
2399 addr
[sample_chan
] = sample_index
;
2401 ac_apply_fmask_to_sample(ctx
, fmask_desc_ptr
, addr
, coord_z
!= NULL
);
2402 return addr
[sample_chan
];
2405 static nir_deref_instr
*get_image_deref(const nir_intrinsic_instr
*instr
)
2407 assert(instr
->src
[0].is_ssa
);
2408 return nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2411 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2412 const nir_intrinsic_instr
*instr
,
2413 enum ac_descriptor_type desc_type
,
2416 nir_deref_instr
*deref_instr
=
2417 instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
?
2418 nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
) : NULL
;
2420 return get_sampler_desc(ctx
, deref_instr
, desc_type
, &instr
->instr
, true, write
);
2423 static void get_image_coords(struct ac_nir_context
*ctx
,
2424 const nir_intrinsic_instr
*instr
,
2425 struct ac_image_args
*args
,
2426 enum glsl_sampler_dim dim
,
2429 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2430 LLVMValueRef masks
[] = {
2431 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2432 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2434 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2437 ASSERTED
bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2438 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2439 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2440 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2441 bool gfx9_1d
= ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2442 assert(!add_frag_pos
&& "Input attachments should be lowered by this point.");
2443 count
= image_type_to_components_count(dim
, is_array
);
2445 if (is_ms
&& (instr
->intrinsic
== nir_intrinsic_image_deref_load
||
2446 instr
->intrinsic
== nir_intrinsic_bindless_image_load
)) {
2447 LLVMValueRef fmask_load_address
[3];
2449 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2450 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2452 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2454 fmask_load_address
[2] = NULL
;
2456 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2457 fmask_load_address
[0],
2458 fmask_load_address
[1],
2459 fmask_load_address
[2],
2461 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2462 AC_DESC_FMASK
, &instr
->instr
, true, false));
2464 if (count
== 1 && !gfx9_1d
) {
2465 if (instr
->src
[1].ssa
->num_components
)
2466 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2468 args
->coords
[0] = src0
;
2473 for (chan
= 0; chan
< count
; ++chan
) {
2474 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2479 args
->coords
[2] = args
->coords
[1];
2480 args
->coords
[1] = ctx
->ac
.i32_0
;
2482 args
->coords
[1] = ctx
->ac
.i32_0
;
2485 if (ctx
->ac
.chip_class
== GFX9
&&
2486 dim
== GLSL_SAMPLER_DIM_2D
&&
2488 /* The hw can't bind a slice of a 3D image as a 2D
2489 * image, because it ignores BASE_ARRAY if the target
2490 * is 3D. The workaround is to read BASE_ARRAY and set
2491 * it as the 3rd address operand for all 2D images.
2493 LLVMValueRef first_layer
, const5
, mask
;
2495 const5
= LLVMConstInt(ctx
->ac
.i32
, 5, 0);
2496 mask
= LLVMConstInt(ctx
->ac
.i32
, S_008F24_BASE_ARRAY(~0), 0);
2497 first_layer
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
->resource
, const5
, "");
2498 first_layer
= LLVMBuildAnd(ctx
->ac
.builder
, first_layer
, mask
, "");
2500 args
->coords
[count
] = first_layer
;
2506 args
->coords
[count
] = sample_index
;
2512 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2513 const nir_intrinsic_instr
*instr
,
2514 bool write
, bool atomic
)
2516 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, write
);
2517 if (ctx
->ac
.chip_class
== GFX9
&& LLVM_VERSION_MAJOR
< 9 && atomic
) {
2518 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2519 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2520 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2522 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2523 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2524 elem_count
, stride
, "");
2526 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2527 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2532 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2533 const nir_intrinsic_instr
*instr
,
2538 enum glsl_sampler_dim dim
;
2539 enum gl_access_qualifier access
;
2542 dim
= nir_intrinsic_image_dim(instr
);
2543 access
= nir_intrinsic_access(instr
);
2544 is_array
= nir_intrinsic_image_array(instr
);
2546 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2547 const struct glsl_type
*type
= image_deref
->type
;
2548 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2549 dim
= glsl_get_sampler_dim(type
);
2550 access
= var
->data
.access
;
2551 is_array
= glsl_sampler_type_is_array(type
);
2554 struct ac_image_args args
= {};
2556 args
.cache_policy
= get_cache_policy(ctx
, access
, false, false);
2558 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2559 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2560 unsigned num_channels
= util_last_bit(mask
);
2561 LLVMValueRef rsrc
, vindex
;
2563 rsrc
= get_image_buffer_descriptor(ctx
, instr
, false, false);
2564 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2567 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2568 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2569 ctx
->ac
.i32_0
, num_channels
,
2572 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2574 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2575 res
= ac_to_integer(&ctx
->ac
, res
);
2577 args
.opcode
= ac_image_load
;
2578 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2579 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2580 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2582 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2584 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2589 static void visit_image_store(struct ac_nir_context
*ctx
,
2590 nir_intrinsic_instr
*instr
,
2595 enum glsl_sampler_dim dim
;
2596 enum gl_access_qualifier access
;
2599 dim
= nir_intrinsic_image_dim(instr
);
2600 access
= nir_intrinsic_access(instr
);
2601 is_array
= nir_intrinsic_image_array(instr
);
2603 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2604 const struct glsl_type
*type
= image_deref
->type
;
2605 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2606 dim
= glsl_get_sampler_dim(type
);
2607 access
= var
->data
.access
;
2608 is_array
= glsl_sampler_type_is_array(type
);
2611 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
2612 struct ac_image_args args
= {};
2614 args
.cache_policy
= get_cache_policy(ctx
, access
, true, writeonly_memory
);
2616 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2617 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, true, false);
2618 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2619 unsigned src_channels
= ac_get_llvm_num_components(src
);
2620 LLVMValueRef vindex
;
2622 if (src_channels
== 3)
2623 src
= ac_build_expand_to_vec4(&ctx
->ac
, src
, 3);
2625 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2626 get_src(ctx
, instr
->src
[1]),
2629 ac_build_buffer_store_format(&ctx
->ac
, rsrc
, src
, vindex
,
2630 ctx
->ac
.i32_0
, src_channels
,
2633 args
.opcode
= ac_image_store
;
2634 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2635 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2636 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2637 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2640 ac_build_image_opcode(&ctx
->ac
, &args
);
2645 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2646 const nir_intrinsic_instr
*instr
,
2649 LLVMValueRef params
[7];
2650 int param_count
= 0;
2652 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
||
2653 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_comp_swap
;
2654 const char *atomic_name
;
2655 char intrinsic_name
[64];
2656 enum ac_atomic_op atomic_subop
;
2657 ASSERTED
int length
;
2659 enum glsl_sampler_dim dim
;
2662 if (instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imin
||
2663 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umin
||
2664 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imax
||
2665 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umax
) {
2666 ASSERTED
const GLenum format
= nir_intrinsic_format(instr
);
2667 assert(format
== GL_R32UI
|| format
== GL_R32I
);
2669 dim
= nir_intrinsic_image_dim(instr
);
2670 is_array
= nir_intrinsic_image_array(instr
);
2672 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2673 dim
= glsl_get_sampler_dim(type
);
2674 is_array
= glsl_sampler_type_is_array(type
);
2677 switch (instr
->intrinsic
) {
2678 case nir_intrinsic_bindless_image_atomic_add
:
2679 case nir_intrinsic_image_deref_atomic_add
:
2680 atomic_name
= "add";
2681 atomic_subop
= ac_atomic_add
;
2683 case nir_intrinsic_bindless_image_atomic_imin
:
2684 case nir_intrinsic_image_deref_atomic_imin
:
2685 atomic_name
= "smin";
2686 atomic_subop
= ac_atomic_smin
;
2688 case nir_intrinsic_bindless_image_atomic_umin
:
2689 case nir_intrinsic_image_deref_atomic_umin
:
2690 atomic_name
= "umin";
2691 atomic_subop
= ac_atomic_umin
;
2693 case nir_intrinsic_bindless_image_atomic_imax
:
2694 case nir_intrinsic_image_deref_atomic_imax
:
2695 atomic_name
= "smax";
2696 atomic_subop
= ac_atomic_smax
;
2698 case nir_intrinsic_bindless_image_atomic_umax
:
2699 case nir_intrinsic_image_deref_atomic_umax
:
2700 atomic_name
= "umax";
2701 atomic_subop
= ac_atomic_umax
;
2703 case nir_intrinsic_bindless_image_atomic_and
:
2704 case nir_intrinsic_image_deref_atomic_and
:
2705 atomic_name
= "and";
2706 atomic_subop
= ac_atomic_and
;
2708 case nir_intrinsic_bindless_image_atomic_or
:
2709 case nir_intrinsic_image_deref_atomic_or
:
2711 atomic_subop
= ac_atomic_or
;
2713 case nir_intrinsic_bindless_image_atomic_xor
:
2714 case nir_intrinsic_image_deref_atomic_xor
:
2715 atomic_name
= "xor";
2716 atomic_subop
= ac_atomic_xor
;
2718 case nir_intrinsic_bindless_image_atomic_exchange
:
2719 case nir_intrinsic_image_deref_atomic_exchange
:
2720 atomic_name
= "swap";
2721 atomic_subop
= ac_atomic_swap
;
2723 case nir_intrinsic_bindless_image_atomic_comp_swap
:
2724 case nir_intrinsic_image_deref_atomic_comp_swap
:
2725 atomic_name
= "cmpswap";
2726 atomic_subop
= 0; /* not used */
2728 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
2729 case nir_intrinsic_image_deref_atomic_inc_wrap
: {
2730 atomic_name
= "inc";
2731 atomic_subop
= ac_atomic_inc_wrap
;
2732 /* ATOMIC_INC instruction does:
2733 * value = (value + 1) % (data + 1)
2735 * value = (value + 1) % data
2736 * So replace 'data' by 'data - 1'.
2738 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
] =
2739 LLVMBuildSub(ctx
->ac
.builder
,
2740 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
],
2744 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
2745 case nir_intrinsic_image_deref_atomic_dec_wrap
:
2746 atomic_name
= "dec";
2747 atomic_subop
= ac_atomic_dec_wrap
;
2754 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
2755 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
2757 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2758 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, true, true);
2759 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2760 ctx
->ac
.i32_0
, ""); /* vindex */
2761 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
2762 if (LLVM_VERSION_MAJOR
>= 9) {
2763 /* XXX: The new raw/struct atomic intrinsics are buggy
2764 * with LLVM 8, see r358579.
2766 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
2767 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
2769 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2770 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
2772 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
2774 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2775 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
2778 assert(length
< sizeof(intrinsic_name
));
2779 return ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
2780 params
, param_count
, 0);
2782 struct ac_image_args args
= {};
2783 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
2784 args
.atomic
= atomic_subop
;
2785 args
.data
[0] = params
[0];
2787 args
.data
[1] = params
[1];
2788 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2789 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2790 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2792 return ac_build_image_opcode(&ctx
->ac
, &args
);
2796 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
2797 const nir_intrinsic_instr
*instr
)
2799 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2801 return ac_build_image_get_sample_count(&ctx
->ac
, rsrc
);
2804 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
2805 const nir_intrinsic_instr
*instr
,
2810 enum glsl_sampler_dim dim
;
2813 dim
= nir_intrinsic_image_dim(instr
);
2814 is_array
= nir_intrinsic_image_array(instr
);
2816 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2817 dim
= glsl_get_sampler_dim(type
);
2818 is_array
= glsl_sampler_type_is_array(type
);
2821 if (dim
== GLSL_SAMPLER_DIM_BUF
)
2822 return get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, false), true);
2824 struct ac_image_args args
= { 0 };
2826 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2828 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2829 args
.opcode
= ac_image_get_resinfo
;
2830 args
.lod
= ctx
->ac
.i32_0
;
2831 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2833 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2835 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
2837 if (dim
== GLSL_SAMPLER_DIM_CUBE
&& is_array
) {
2838 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
2839 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2840 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
2841 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
2843 if (ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
&& is_array
) {
2844 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2845 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
2852 static void emit_membar(struct ac_llvm_context
*ac
,
2853 const nir_intrinsic_instr
*instr
)
2855 unsigned wait_flags
= 0;
2857 switch (instr
->intrinsic
) {
2858 case nir_intrinsic_memory_barrier
:
2859 case nir_intrinsic_group_memory_barrier
:
2860 wait_flags
= AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
2862 case nir_intrinsic_memory_barrier_atomic_counter
:
2863 case nir_intrinsic_memory_barrier_buffer
:
2864 case nir_intrinsic_memory_barrier_image
:
2865 wait_flags
= AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
2867 case nir_intrinsic_memory_barrier_shared
:
2868 wait_flags
= AC_WAIT_LGKM
;
2874 ac_build_waitcnt(ac
, wait_flags
);
2877 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
2879 /* GFX6 only (thanks to a hw bug workaround):
2880 * The real barrier instruction isn’t needed, because an entire patch
2881 * always fits into a single wave.
2883 if (ac
->chip_class
== GFX6
&& stage
== MESA_SHADER_TESS_CTRL
) {
2884 ac_build_waitcnt(ac
, AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
);
2887 ac_build_s_barrier(ac
);
2890 static void emit_discard(struct ac_nir_context
*ctx
,
2891 const nir_intrinsic_instr
*instr
)
2895 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
2896 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2897 get_src(ctx
, instr
->src
[0]),
2900 assert(instr
->intrinsic
== nir_intrinsic_discard
);
2901 cond
= ctx
->ac
.i1false
;
2904 ctx
->abi
->emit_kill(ctx
->abi
, cond
);
2908 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
2910 LLVMValueRef result
;
2911 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
2912 result
= LLVMBuildAnd(ctx
->ac
.builder
,
2913 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
2914 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2916 if (ctx
->ac
.wave_size
== 32)
2917 result
= LLVMBuildLShr(ctx
->ac
.builder
, result
,
2918 LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
2920 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
2924 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
2926 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2927 LLVMValueRef result
;
2928 result
= LLVMBuildAnd(ctx
->ac
.builder
,
2929 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
2930 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2931 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
2933 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
2938 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
2940 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2941 return LLVMBuildAnd(ctx
->ac
.builder
,
2942 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
2943 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
2945 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
2950 visit_first_invocation(struct ac_nir_context
*ctx
)
2952 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
2953 const char *intr
= ctx
->ac
.wave_size
== 32 ? "llvm.cttz.i32" : "llvm.cttz.i64";
2955 /* The second argument is whether cttz(0) should be defined, but we do not care. */
2956 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
2957 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
, intr
,
2958 ctx
->ac
.iN_wavemask
, args
, 2,
2959 AC_FUNC_ATTR_NOUNWIND
|
2960 AC_FUNC_ATTR_READNONE
);
2962 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
2966 visit_load_shared(struct ac_nir_context
*ctx
,
2967 const nir_intrinsic_instr
*instr
)
2969 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
2971 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
2973 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
2974 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2975 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
2976 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
2979 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
2980 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2984 visit_store_shared(struct ac_nir_context
*ctx
,
2985 const nir_intrinsic_instr
*instr
)
2987 LLVMValueRef derived_ptr
, data
,index
;
2988 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2990 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1]);
2991 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
2993 int writemask
= nir_intrinsic_write_mask(instr
);
2994 for (int chan
= 0; chan
< 4; chan
++) {
2995 if (!(writemask
& (1 << chan
))) {
2998 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2999 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
3000 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
3001 LLVMBuildStore(builder
, data
, derived_ptr
);
3005 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
3006 const nir_intrinsic_instr
*instr
,
3007 LLVMValueRef ptr
, int src_idx
)
3009 LLVMValueRef result
;
3010 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
3012 const char *sync_scope
= LLVM_VERSION_MAJOR
>= 9 ? "workgroup-one-as" : "workgroup";
3014 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
3015 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
3016 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
3017 result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, src
, src1
, sync_scope
);
3018 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
3020 LLVMAtomicRMWBinOp op
;
3021 switch (instr
->intrinsic
) {
3022 case nir_intrinsic_shared_atomic_add
:
3023 case nir_intrinsic_deref_atomic_add
:
3024 op
= LLVMAtomicRMWBinOpAdd
;
3026 case nir_intrinsic_shared_atomic_umin
:
3027 case nir_intrinsic_deref_atomic_umin
:
3028 op
= LLVMAtomicRMWBinOpUMin
;
3030 case nir_intrinsic_shared_atomic_umax
:
3031 case nir_intrinsic_deref_atomic_umax
:
3032 op
= LLVMAtomicRMWBinOpUMax
;
3034 case nir_intrinsic_shared_atomic_imin
:
3035 case nir_intrinsic_deref_atomic_imin
:
3036 op
= LLVMAtomicRMWBinOpMin
;
3038 case nir_intrinsic_shared_atomic_imax
:
3039 case nir_intrinsic_deref_atomic_imax
:
3040 op
= LLVMAtomicRMWBinOpMax
;
3042 case nir_intrinsic_shared_atomic_and
:
3043 case nir_intrinsic_deref_atomic_and
:
3044 op
= LLVMAtomicRMWBinOpAnd
;
3046 case nir_intrinsic_shared_atomic_or
:
3047 case nir_intrinsic_deref_atomic_or
:
3048 op
= LLVMAtomicRMWBinOpOr
;
3050 case nir_intrinsic_shared_atomic_xor
:
3051 case nir_intrinsic_deref_atomic_xor
:
3052 op
= LLVMAtomicRMWBinOpXor
;
3054 case nir_intrinsic_shared_atomic_exchange
:
3055 case nir_intrinsic_deref_atomic_exchange
:
3056 op
= LLVMAtomicRMWBinOpXchg
;
3062 result
= ac_build_atomic_rmw(&ctx
->ac
, op
, ptr
, ac_to_integer(&ctx
->ac
, src
), sync_scope
);
3067 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
3069 LLVMValueRef values
[2];
3070 LLVMValueRef pos
[2];
3072 pos
[0] = ac_to_float(&ctx
->ac
,
3073 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[0]));
3074 pos
[1] = ac_to_float(&ctx
->ac
,
3075 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[1]));
3077 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
3078 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
3079 return ac_build_gather_values(&ctx
->ac
, values
, 2);
3082 static LLVMValueRef
lookup_interp_param(struct ac_nir_context
*ctx
,
3083 enum glsl_interp_mode interp
, unsigned location
)
3086 case INTERP_MODE_FLAT
:
3089 case INTERP_MODE_SMOOTH
:
3090 case INTERP_MODE_NONE
:
3091 if (location
== INTERP_CENTER
)
3092 return ac_get_arg(&ctx
->ac
, ctx
->args
->persp_center
);
3093 else if (location
== INTERP_CENTROID
)
3094 return ctx
->abi
->persp_centroid
;
3095 else if (location
== INTERP_SAMPLE
)
3096 return ac_get_arg(&ctx
->ac
, ctx
->args
->persp_sample
);
3098 case INTERP_MODE_NOPERSPECTIVE
:
3099 if (location
== INTERP_CENTER
)
3100 return ac_get_arg(&ctx
->ac
, ctx
->args
->linear_center
);
3101 else if (location
== INTERP_CENTROID
)
3102 return ctx
->abi
->linear_centroid
;
3103 else if (location
== INTERP_SAMPLE
)
3104 return ac_get_arg(&ctx
->ac
, ctx
->args
->linear_sample
);
3110 static LLVMValueRef
barycentric_center(struct ac_nir_context
*ctx
,
3113 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3114 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3117 static LLVMValueRef
barycentric_offset(struct ac_nir_context
*ctx
,
3119 LLVMValueRef offset
)
3121 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3122 LLVMValueRef src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_0
, ""));
3123 LLVMValueRef src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_1
, ""));
3125 LLVMValueRef ij_out
[2];
3126 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
3129 * take the I then J parameters, and the DDX/Y for it, and
3130 * calculate the IJ inputs for the interpolator.
3131 * temp1 = ddx * offset/sample.x + I;
3132 * interp_param.I = ddy * offset/sample.y + temp1;
3133 * temp1 = ddx * offset/sample.x + J;
3134 * interp_param.J = ddy * offset/sample.y + temp1;
3136 for (unsigned i
= 0; i
< 2; i
++) {
3137 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
3138 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
3139 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3140 ddxy_out
, ix_ll
, "");
3141 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3142 ddxy_out
, iy_ll
, "");
3143 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3144 interp_param
, ix_ll
, "");
3145 LLVMValueRef temp1
, temp2
;
3147 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
3150 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
3151 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
3153 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
3154 temp2
, ctx
->ac
.i32
, "");
3156 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
3157 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3160 static LLVMValueRef
barycentric_centroid(struct ac_nir_context
*ctx
,
3163 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTROID
);
3164 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3167 static LLVMValueRef
barycentric_at_sample(struct ac_nir_context
*ctx
,
3169 LLVMValueRef sample_id
)
3171 if (ctx
->abi
->interp_at_sample_force_center
)
3172 return barycentric_center(ctx
, mode
);
3174 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
3176 /* fetch sample ID */
3177 LLVMValueRef sample_pos
= ctx
->abi
->load_sample_position(ctx
->abi
, sample_id
);
3179 LLVMValueRef src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_0
, "");
3180 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
3181 LLVMValueRef src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_1
, "");
3182 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
3183 LLVMValueRef coords
[] = { src_c0
, src_c1
};
3184 LLVMValueRef offset
= ac_build_gather_values(&ctx
->ac
, coords
, 2);
3186 return barycentric_offset(ctx
, mode
, offset
);
3190 static LLVMValueRef
barycentric_sample(struct ac_nir_context
*ctx
,
3193 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_SAMPLE
);
3194 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3197 static LLVMValueRef
load_interpolated_input(struct ac_nir_context
*ctx
,
3198 LLVMValueRef interp_param
,
3199 unsigned index
, unsigned comp_start
,
3200 unsigned num_components
,
3203 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3205 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
,
3206 interp_param
, ctx
->ac
.v2f32
, "");
3207 LLVMValueRef i
= LLVMBuildExtractElement(
3208 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_0
, "");
3209 LLVMValueRef j
= LLVMBuildExtractElement(
3210 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_1
, "");
3212 LLVMValueRef values
[4];
3213 assert(bitsize
== 16 || bitsize
== 32);
3214 for (unsigned comp
= 0; comp
< num_components
; comp
++) {
3215 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, comp_start
+ comp
, false);
3216 if (bitsize
== 16) {
3217 values
[comp
] = ac_build_fs_interp_f16(&ctx
->ac
, llvm_chan
, attr_number
,
3218 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
), i
, j
);
3220 values
[comp
] = ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3221 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
), i
, j
);
3225 return ac_to_integer(&ctx
->ac
, ac_build_gather_values(&ctx
->ac
, values
, num_components
));
3228 static LLVMValueRef
load_flat_input(struct ac_nir_context
*ctx
,
3229 unsigned index
, unsigned comp_start
,
3230 unsigned num_components
,
3233 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3235 LLVMValueRef values
[8];
3237 /* Each component of a 64-bit value takes up two GL-level channels. */
3239 bit_size
== 64 ? num_components
* 2 : num_components
;
3241 for (unsigned chan
= 0; chan
< channels
; chan
++) {
3242 if (comp_start
+ chan
> 4)
3243 attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
+ 1, false);
3244 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, (comp_start
+ chan
) % 4, false);
3245 values
[chan
] = ac_build_fs_interp_mov(&ctx
->ac
,
3246 LLVMConstInt(ctx
->ac
.i32
, 2, false),
3249 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
));
3250 values
[chan
] = LLVMBuildBitCast(ctx
->ac
.builder
, values
[chan
], ctx
->ac
.i32
, "");
3251 values
[chan
] = LLVMBuildTruncOrBitCast(ctx
->ac
.builder
, values
[chan
],
3252 bit_size
== 16 ? ctx
->ac
.i16
: ctx
->ac
.i32
, "");
3255 LLVMValueRef result
= ac_build_gather_values(&ctx
->ac
, values
, channels
);
3256 if (bit_size
== 64) {
3257 LLVMTypeRef type
= num_components
== 1 ? ctx
->ac
.i64
:
3258 LLVMVectorType(ctx
->ac
.i64
, num_components
);
3259 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
, type
, "");
3264 static void visit_intrinsic(struct ac_nir_context
*ctx
,
3265 nir_intrinsic_instr
*instr
)
3267 LLVMValueRef result
= NULL
;
3269 switch (instr
->intrinsic
) {
3270 case nir_intrinsic_ballot
:
3271 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3272 if (ctx
->ac
.ballot_mask_bits
> ctx
->ac
.wave_size
)
3273 result
= LLVMBuildZExt(ctx
->ac
.builder
, result
, ctx
->ac
.iN_ballotmask
, "");
3275 case nir_intrinsic_read_invocation
:
3276 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3277 get_src(ctx
, instr
->src
[1]));
3279 case nir_intrinsic_read_first_invocation
:
3280 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
3282 case nir_intrinsic_load_subgroup_invocation
:
3283 result
= ac_get_thread_id(&ctx
->ac
);
3285 case nir_intrinsic_load_work_group_id
: {
3286 LLVMValueRef values
[3];
3288 for (int i
= 0; i
< 3; i
++) {
3289 values
[i
] = ctx
->args
->workgroup_ids
[i
].used
?
3290 ac_get_arg(&ctx
->ac
, ctx
->args
->workgroup_ids
[i
]) : ctx
->ac
.i32_0
;
3293 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
3296 case nir_intrinsic_load_base_vertex
:
3297 case nir_intrinsic_load_first_vertex
:
3298 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
3300 case nir_intrinsic_load_local_group_size
:
3301 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
3303 case nir_intrinsic_load_vertex_id
:
3304 result
= LLVMBuildAdd(ctx
->ac
.builder
,
3305 ac_get_arg(&ctx
->ac
, ctx
->args
->vertex_id
),
3306 ac_get_arg(&ctx
->ac
, ctx
->args
->base_vertex
), "");
3308 case nir_intrinsic_load_vertex_id_zero_base
: {
3309 result
= ctx
->abi
->vertex_id
;
3312 case nir_intrinsic_load_local_invocation_id
: {
3313 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->local_invocation_ids
);
3316 case nir_intrinsic_load_base_instance
:
3317 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->start_instance
);
3319 case nir_intrinsic_load_draw_id
:
3320 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->draw_id
);
3322 case nir_intrinsic_load_view_index
:
3323 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->view_index
);
3325 case nir_intrinsic_load_invocation_id
:
3326 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3327 result
= ac_unpack_param(&ctx
->ac
,
3328 ac_get_arg(&ctx
->ac
, ctx
->args
->tcs_rel_ids
),
3331 if (ctx
->ac
.chip_class
>= GFX10
) {
3332 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3333 ac_get_arg(&ctx
->ac
, ctx
->args
->gs_invocation_id
),
3334 LLVMConstInt(ctx
->ac
.i32
, 127, 0), "");
3336 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->gs_invocation_id
);
3340 case nir_intrinsic_load_primitive_id
:
3341 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3342 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->gs_prim_id
);
3343 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3344 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->tcs_patch_id
);
3345 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3346 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->tes_patch_id
);
3348 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3350 case nir_intrinsic_load_sample_id
:
3351 result
= ac_unpack_param(&ctx
->ac
,
3352 ac_get_arg(&ctx
->ac
, ctx
->args
->ancillary
),
3355 case nir_intrinsic_load_sample_pos
:
3356 result
= load_sample_pos(ctx
);
3358 case nir_intrinsic_load_sample_mask_in
:
3359 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3361 case nir_intrinsic_load_frag_coord
: {
3362 LLVMValueRef values
[4] = {
3363 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[0]),
3364 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[1]),
3365 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[2]),
3366 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
,
3367 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[3]))
3369 result
= ac_to_integer(&ctx
->ac
,
3370 ac_build_gather_values(&ctx
->ac
, values
, 4));
3373 case nir_intrinsic_load_layer_id
:
3374 result
= ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)];
3376 case nir_intrinsic_load_front_face
:
3377 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->front_face
);
3379 case nir_intrinsic_load_helper_invocation
:
3380 result
= ac_build_load_helper_invocation(&ctx
->ac
);
3382 case nir_intrinsic_load_color0
:
3383 result
= ctx
->abi
->color0
;
3385 case nir_intrinsic_load_color1
:
3386 result
= ctx
->abi
->color1
;
3388 case nir_intrinsic_load_user_data_amd
:
3389 assert(LLVMTypeOf(ctx
->abi
->user_data
) == ctx
->ac
.v4i32
);
3390 result
= ctx
->abi
->user_data
;
3392 case nir_intrinsic_load_instance_id
:
3393 result
= ctx
->abi
->instance_id
;
3395 case nir_intrinsic_load_num_work_groups
:
3396 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->num_work_groups
);
3398 case nir_intrinsic_load_local_invocation_index
:
3399 result
= visit_load_local_invocation_index(ctx
);
3401 case nir_intrinsic_load_subgroup_id
:
3402 result
= visit_load_subgroup_id(ctx
);
3404 case nir_intrinsic_load_num_subgroups
:
3405 result
= visit_load_num_subgroups(ctx
);
3407 case nir_intrinsic_first_invocation
:
3408 result
= visit_first_invocation(ctx
);
3410 case nir_intrinsic_load_push_constant
:
3411 result
= visit_load_push_constant(ctx
, instr
);
3413 case nir_intrinsic_vulkan_resource_index
: {
3414 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3415 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3416 unsigned binding
= nir_intrinsic_binding(instr
);
3418 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3422 case nir_intrinsic_vulkan_resource_reindex
:
3423 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3425 case nir_intrinsic_store_ssbo
:
3426 visit_store_ssbo(ctx
, instr
);
3428 case nir_intrinsic_load_ssbo
:
3429 result
= visit_load_buffer(ctx
, instr
);
3431 case nir_intrinsic_ssbo_atomic_add
:
3432 case nir_intrinsic_ssbo_atomic_imin
:
3433 case nir_intrinsic_ssbo_atomic_umin
:
3434 case nir_intrinsic_ssbo_atomic_imax
:
3435 case nir_intrinsic_ssbo_atomic_umax
:
3436 case nir_intrinsic_ssbo_atomic_and
:
3437 case nir_intrinsic_ssbo_atomic_or
:
3438 case nir_intrinsic_ssbo_atomic_xor
:
3439 case nir_intrinsic_ssbo_atomic_exchange
:
3440 case nir_intrinsic_ssbo_atomic_comp_swap
:
3441 result
= visit_atomic_ssbo(ctx
, instr
);
3443 case nir_intrinsic_load_ubo
:
3444 result
= visit_load_ubo_buffer(ctx
, instr
);
3446 case nir_intrinsic_get_buffer_size
:
3447 result
= visit_get_buffer_size(ctx
, instr
);
3449 case nir_intrinsic_load_deref
:
3450 result
= visit_load_var(ctx
, instr
);
3452 case nir_intrinsic_store_deref
:
3453 visit_store_var(ctx
, instr
);
3455 case nir_intrinsic_load_shared
:
3456 result
= visit_load_shared(ctx
, instr
);
3458 case nir_intrinsic_store_shared
:
3459 visit_store_shared(ctx
, instr
);
3461 case nir_intrinsic_bindless_image_samples
:
3462 case nir_intrinsic_image_deref_samples
:
3463 result
= visit_image_samples(ctx
, instr
);
3465 case nir_intrinsic_bindless_image_load
:
3466 result
= visit_image_load(ctx
, instr
, true);
3468 case nir_intrinsic_image_deref_load
:
3469 result
= visit_image_load(ctx
, instr
, false);
3471 case nir_intrinsic_bindless_image_store
:
3472 visit_image_store(ctx
, instr
, true);
3474 case nir_intrinsic_image_deref_store
:
3475 visit_image_store(ctx
, instr
, false);
3477 case nir_intrinsic_bindless_image_atomic_add
:
3478 case nir_intrinsic_bindless_image_atomic_imin
:
3479 case nir_intrinsic_bindless_image_atomic_umin
:
3480 case nir_intrinsic_bindless_image_atomic_imax
:
3481 case nir_intrinsic_bindless_image_atomic_umax
:
3482 case nir_intrinsic_bindless_image_atomic_and
:
3483 case nir_intrinsic_bindless_image_atomic_or
:
3484 case nir_intrinsic_bindless_image_atomic_xor
:
3485 case nir_intrinsic_bindless_image_atomic_exchange
:
3486 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3487 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
3488 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
3489 result
= visit_image_atomic(ctx
, instr
, true);
3491 case nir_intrinsic_image_deref_atomic_add
:
3492 case nir_intrinsic_image_deref_atomic_imin
:
3493 case nir_intrinsic_image_deref_atomic_umin
:
3494 case nir_intrinsic_image_deref_atomic_imax
:
3495 case nir_intrinsic_image_deref_atomic_umax
:
3496 case nir_intrinsic_image_deref_atomic_and
:
3497 case nir_intrinsic_image_deref_atomic_or
:
3498 case nir_intrinsic_image_deref_atomic_xor
:
3499 case nir_intrinsic_image_deref_atomic_exchange
:
3500 case nir_intrinsic_image_deref_atomic_comp_swap
:
3501 case nir_intrinsic_image_deref_atomic_inc_wrap
:
3502 case nir_intrinsic_image_deref_atomic_dec_wrap
:
3503 result
= visit_image_atomic(ctx
, instr
, false);
3505 case nir_intrinsic_bindless_image_size
:
3506 result
= visit_image_size(ctx
, instr
, true);
3508 case nir_intrinsic_image_deref_size
:
3509 result
= visit_image_size(ctx
, instr
, false);
3511 case nir_intrinsic_shader_clock
:
3512 result
= ac_build_shader_clock(&ctx
->ac
);
3514 case nir_intrinsic_discard
:
3515 case nir_intrinsic_discard_if
:
3516 emit_discard(ctx
, instr
);
3518 case nir_intrinsic_memory_barrier
:
3519 case nir_intrinsic_group_memory_barrier
:
3520 case nir_intrinsic_memory_barrier_atomic_counter
:
3521 case nir_intrinsic_memory_barrier_buffer
:
3522 case nir_intrinsic_memory_barrier_image
:
3523 case nir_intrinsic_memory_barrier_shared
:
3524 emit_membar(&ctx
->ac
, instr
);
3526 case nir_intrinsic_barrier
:
3527 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
3529 case nir_intrinsic_shared_atomic_add
:
3530 case nir_intrinsic_shared_atomic_imin
:
3531 case nir_intrinsic_shared_atomic_umin
:
3532 case nir_intrinsic_shared_atomic_imax
:
3533 case nir_intrinsic_shared_atomic_umax
:
3534 case nir_intrinsic_shared_atomic_and
:
3535 case nir_intrinsic_shared_atomic_or
:
3536 case nir_intrinsic_shared_atomic_xor
:
3537 case nir_intrinsic_shared_atomic_exchange
:
3538 case nir_intrinsic_shared_atomic_comp_swap
: {
3539 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
3540 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3543 case nir_intrinsic_deref_atomic_add
:
3544 case nir_intrinsic_deref_atomic_imin
:
3545 case nir_intrinsic_deref_atomic_umin
:
3546 case nir_intrinsic_deref_atomic_imax
:
3547 case nir_intrinsic_deref_atomic_umax
:
3548 case nir_intrinsic_deref_atomic_and
:
3549 case nir_intrinsic_deref_atomic_or
:
3550 case nir_intrinsic_deref_atomic_xor
:
3551 case nir_intrinsic_deref_atomic_exchange
:
3552 case nir_intrinsic_deref_atomic_comp_swap
: {
3553 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
3554 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3557 case nir_intrinsic_load_barycentric_pixel
:
3558 result
= barycentric_center(ctx
, nir_intrinsic_interp_mode(instr
));
3560 case nir_intrinsic_load_barycentric_centroid
:
3561 result
= barycentric_centroid(ctx
, nir_intrinsic_interp_mode(instr
));
3563 case nir_intrinsic_load_barycentric_sample
:
3564 result
= barycentric_sample(ctx
, nir_intrinsic_interp_mode(instr
));
3566 case nir_intrinsic_load_barycentric_at_offset
: {
3567 LLVMValueRef offset
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3568 result
= barycentric_offset(ctx
, nir_intrinsic_interp_mode(instr
), offset
);
3571 case nir_intrinsic_load_barycentric_at_sample
: {
3572 LLVMValueRef sample_id
= get_src(ctx
, instr
->src
[0]);
3573 result
= barycentric_at_sample(ctx
, nir_intrinsic_interp_mode(instr
), sample_id
);
3576 case nir_intrinsic_load_interpolated_input
: {
3577 /* We assume any indirect loads have been lowered away */
3578 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[1]);
3580 assert(offset
[0].i32
== 0);
3582 LLVMValueRef interp_param
= get_src(ctx
, instr
->src
[0]);
3583 unsigned index
= nir_intrinsic_base(instr
);
3584 unsigned component
= nir_intrinsic_component(instr
);
3585 result
= load_interpolated_input(ctx
, interp_param
, index
,
3587 instr
->dest
.ssa
.num_components
,
3588 instr
->dest
.ssa
.bit_size
);
3591 case nir_intrinsic_load_input
: {
3592 /* We only lower inputs for fragment shaders ATM */
3593 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[0]);
3595 assert(offset
[0].i32
== 0);
3597 unsigned index
= nir_intrinsic_base(instr
);
3598 unsigned component
= nir_intrinsic_component(instr
);
3599 result
= load_flat_input(ctx
, index
, component
,
3600 instr
->dest
.ssa
.num_components
,
3601 instr
->dest
.ssa
.bit_size
);
3604 case nir_intrinsic_emit_vertex
:
3605 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
3607 case nir_intrinsic_end_primitive
:
3608 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
3610 case nir_intrinsic_load_tess_coord
:
3611 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
3613 case nir_intrinsic_load_tess_level_outer
:
3614 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, false);
3616 case nir_intrinsic_load_tess_level_inner
:
3617 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, false);
3619 case nir_intrinsic_load_tess_level_outer_default
:
3620 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, true);
3622 case nir_intrinsic_load_tess_level_inner_default
:
3623 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, true);
3625 case nir_intrinsic_load_patch_vertices_in
:
3626 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
3628 case nir_intrinsic_vote_all
: {
3629 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3630 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3633 case nir_intrinsic_vote_any
: {
3634 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3635 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3638 case nir_intrinsic_shuffle
:
3639 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3640 get_src(ctx
, instr
->src
[1]));
3642 case nir_intrinsic_reduce
:
3643 result
= ac_build_reduce(&ctx
->ac
,
3644 get_src(ctx
, instr
->src
[0]),
3645 instr
->const_index
[0],
3646 instr
->const_index
[1]);
3648 case nir_intrinsic_inclusive_scan
:
3649 result
= ac_build_inclusive_scan(&ctx
->ac
,
3650 get_src(ctx
, instr
->src
[0]),
3651 instr
->const_index
[0]);
3653 case nir_intrinsic_exclusive_scan
:
3654 result
= ac_build_exclusive_scan(&ctx
->ac
,
3655 get_src(ctx
, instr
->src
[0]),
3656 instr
->const_index
[0]);
3658 case nir_intrinsic_quad_broadcast
: {
3659 unsigned lane
= nir_src_as_uint(instr
->src
[1]);
3660 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3661 lane
, lane
, lane
, lane
);
3664 case nir_intrinsic_quad_swap_horizontal
:
3665 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
3667 case nir_intrinsic_quad_swap_vertical
:
3668 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
3670 case nir_intrinsic_quad_swap_diagonal
:
3671 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
3673 case nir_intrinsic_quad_swizzle_amd
: {
3674 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3675 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3676 mask
& 0x3, (mask
>> 2) & 0x3,
3677 (mask
>> 4) & 0x3, (mask
>> 6) & 0x3);
3680 case nir_intrinsic_masked_swizzle_amd
: {
3681 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3682 result
= ac_build_ds_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), mask
);
3685 case nir_intrinsic_write_invocation_amd
:
3686 result
= ac_build_writelane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3687 get_src(ctx
, instr
->src
[1]),
3688 get_src(ctx
, instr
->src
[2]));
3690 case nir_intrinsic_mbcnt_amd
:
3691 result
= ac_build_mbcnt(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3693 case nir_intrinsic_load_scratch
: {
3694 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
3695 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
3697 LLVMTypeRef comp_type
=
3698 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
3699 LLVMTypeRef vec_type
=
3700 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
3701 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
3702 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
3703 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
3704 LLVMPointerType(vec_type
, addr_space
), "");
3705 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
3708 case nir_intrinsic_store_scratch
: {
3709 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
3710 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
3712 LLVMTypeRef comp_type
=
3713 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->src
[0].ssa
->bit_size
);
3714 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
3715 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
3716 LLVMPointerType(comp_type
, addr_space
), "");
3717 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
3718 unsigned wrmask
= nir_intrinsic_write_mask(instr
);
3721 u_bit_scan_consecutive_range(&wrmask
, &start
, &count
);
3723 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, start
, false);
3724 LLVMValueRef offset_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &offset
, 1, "");
3725 LLVMTypeRef vec_type
=
3726 count
== 1 ? comp_type
: LLVMVectorType(comp_type
, count
);
3727 offset_ptr
= LLVMBuildBitCast(ctx
->ac
.builder
,
3729 LLVMPointerType(vec_type
, addr_space
),
3731 LLVMValueRef offset_src
=
3732 ac_extract_components(&ctx
->ac
, src
, start
, count
);
3733 LLVMBuildStore(ctx
->ac
.builder
, offset_src
, offset_ptr
);
3737 case nir_intrinsic_load_constant
: {
3738 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
3739 LLVMValueRef base
= LLVMConstInt(ctx
->ac
.i32
,
3740 nir_intrinsic_base(instr
),
3742 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, base
, "");
3743 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->constant_data
,
3745 LLVMTypeRef comp_type
=
3746 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
3747 LLVMTypeRef vec_type
=
3748 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
3749 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
3750 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
3751 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
3752 LLVMPointerType(vec_type
, addr_space
), "");
3753 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
3757 fprintf(stderr
, "Unknown intrinsic: ");
3758 nir_print_instr(&instr
->instr
, stderr
);
3759 fprintf(stderr
, "\n");
3763 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3767 static LLVMValueRef
get_bindless_index_from_uniform(struct ac_nir_context
*ctx
,
3768 unsigned base_index
,
3769 unsigned constant_index
,
3770 LLVMValueRef dynamic_index
)
3772 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, base_index
* 4, 0);
3773 LLVMValueRef index
= LLVMBuildAdd(ctx
->ac
.builder
, dynamic_index
,
3774 LLVMConstInt(ctx
->ac
.i32
, constant_index
, 0), "");
3776 /* Bindless uniforms are 64bit so multiple index by 8 */
3777 index
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i32
, 8, 0), "");
3778 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, index
, "");
3780 LLVMValueRef ubo_index
= ctx
->abi
->load_ubo(ctx
->abi
, ctx
->ac
.i32_0
);
3782 LLVMValueRef ret
= ac_build_buffer_load(&ctx
->ac
, ubo_index
, 1, NULL
, offset
,
3783 NULL
, 0, 0, true, true);
3785 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ctx
->ac
.i32
, "");
3788 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
3789 nir_deref_instr
*deref_instr
,
3790 enum ac_descriptor_type desc_type
,
3791 const nir_instr
*instr
,
3792 bool image
, bool write
)
3794 LLVMValueRef index
= NULL
;
3795 unsigned constant_index
= 0;
3796 unsigned descriptor_set
;
3797 unsigned base_index
;
3798 bool bindless
= false;
3803 nir_intrinsic_instr
*img_instr
= nir_instr_as_intrinsic(instr
);
3806 index
= get_src(ctx
, img_instr
->src
[0]);
3808 nir_tex_instr
*tex_instr
= nir_instr_as_tex(instr
);
3809 int sampSrcIdx
= nir_tex_instr_src_index(tex_instr
,
3810 nir_tex_src_sampler_handle
);
3811 if (sampSrcIdx
!= -1) {
3814 index
= get_src(ctx
, tex_instr
->src
[sampSrcIdx
].src
);
3816 assert(tex_instr
&& !image
);
3817 base_index
= tex_instr
->sampler_index
;
3821 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3822 if (deref_instr
->deref_type
== nir_deref_type_array
) {
3823 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
3827 if (nir_src_is_const(deref_instr
->arr
.index
)) {
3828 constant_index
+= array_size
* nir_src_as_uint(deref_instr
->arr
.index
);
3830 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3832 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3833 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
3838 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
3841 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3842 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
3843 unsigned sidx
= deref_instr
->strct
.index
;
3844 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3845 constant_index
+= glsl_get_struct_location_offset(deref_instr
->type
, sidx
);
3847 unreachable("Unsupported deref type");
3850 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
3852 if (deref_instr
->var
->data
.bindless
) {
3853 /* For now just assert on unhandled variable types */
3854 assert(deref_instr
->var
->data
.mode
== nir_var_uniform
);
3856 base_index
= deref_instr
->var
->data
.driver_location
;
3859 index
= index
? index
: ctx
->ac
.i32_0
;
3860 index
= get_bindless_index_from_uniform(ctx
, base_index
,
3861 constant_index
, index
);
3863 base_index
= deref_instr
->var
->data
.binding
;
3866 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
3869 constant_index
, index
,
3870 desc_type
, image
, write
, bindless
);
3873 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
3876 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
3877 * filtering manually. The driver sets img7 to a mask clearing
3878 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
3879 * s_and_b32 samp0, samp0, img7
3882 * The ANISO_OVERRIDE sampler field enables this fix in TA.
3884 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
3885 LLVMValueRef res
, LLVMValueRef samp
)
3887 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3888 LLVMValueRef img7
, samp0
;
3890 if (ctx
->ac
.chip_class
>= GFX8
)
3893 img7
= LLVMBuildExtractElement(builder
, res
,
3894 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
3895 samp0
= LLVMBuildExtractElement(builder
, samp
,
3896 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3897 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
3898 return LLVMBuildInsertElement(builder
, samp
, samp0
,
3899 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3902 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
3903 nir_tex_instr
*instr
,
3904 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
3905 LLVMValueRef
*fmask_ptr
)
3907 nir_deref_instr
*texture_deref_instr
= NULL
;
3908 nir_deref_instr
*sampler_deref_instr
= NULL
;
3911 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3912 switch (instr
->src
[i
].src_type
) {
3913 case nir_tex_src_texture_deref
:
3914 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3916 case nir_tex_src_sampler_deref
:
3917 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3919 case nir_tex_src_plane
:
3920 plane
= nir_src_as_int(instr
->src
[i
].src
);
3927 if (!sampler_deref_instr
)
3928 sampler_deref_instr
= texture_deref_instr
;
3930 enum ac_descriptor_type main_descriptor
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
? AC_DESC_BUFFER
: AC_DESC_IMAGE
;
3933 assert(instr
->op
!= nir_texop_txf_ms
&&
3934 instr
->op
!= nir_texop_samples_identical
);
3935 assert(instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
);
3937 main_descriptor
= AC_DESC_PLANE_0
+ plane
;
3940 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, main_descriptor
, &instr
->instr
, false, false);
3943 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, &instr
->instr
, false, false);
3944 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
3945 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
3947 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
3948 instr
->op
== nir_texop_samples_identical
))
3949 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
, &instr
->instr
, false, false);
3952 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
3955 coord
= ac_to_float(ctx
, coord
);
3956 coord
= ac_build_round(ctx
, coord
);
3957 coord
= ac_to_integer(ctx
, coord
);
3961 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
3963 LLVMValueRef result
= NULL
;
3964 struct ac_image_args args
= { 0 };
3965 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
3966 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
3967 unsigned offset_src
= 0;
3969 tex_fetch_ptrs(ctx
, instr
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
3971 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3972 switch (instr
->src
[i
].src_type
) {
3973 case nir_tex_src_coord
: {
3974 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
3975 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
3976 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
3979 case nir_tex_src_projector
:
3981 case nir_tex_src_comparator
:
3982 if (instr
->is_shadow
) {
3983 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
3984 args
.compare
= ac_to_float(&ctx
->ac
, args
.compare
);
3987 case nir_tex_src_offset
:
3988 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
3991 case nir_tex_src_bias
:
3992 if (instr
->op
== nir_texop_txb
)
3993 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
3995 case nir_tex_src_lod
: {
3996 if (nir_src_is_const(instr
->src
[i
].src
) && nir_src_as_uint(instr
->src
[i
].src
) == 0)
3997 args
.level_zero
= true;
3999 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
4002 case nir_tex_src_ms_index
:
4003 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
4005 case nir_tex_src_ms_mcs
:
4007 case nir_tex_src_ddx
:
4008 ddx
= get_src(ctx
, instr
->src
[i
].src
);
4010 case nir_tex_src_ddy
:
4011 ddy
= get_src(ctx
, instr
->src
[i
].src
);
4013 case nir_tex_src_texture_offset
:
4014 case nir_tex_src_sampler_offset
:
4015 case nir_tex_src_plane
:
4021 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
4022 result
= get_buffer_size(ctx
, args
.resource
, true);
4026 if (instr
->op
== nir_texop_texture_samples
) {
4027 LLVMValueRef res
, samples
, is_msaa
;
4028 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
4029 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
4030 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4031 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4032 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
4033 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
4034 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4035 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
4036 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4038 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4039 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
4040 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
4041 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
4042 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
4044 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
4050 if (args
.offset
&& instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
4051 LLVMValueRef offset
[3], pack
;
4052 for (unsigned chan
= 0; chan
< 3; ++chan
)
4053 offset
[chan
] = ctx
->ac
.i32_0
;
4055 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
4056 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
4057 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
4058 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
4059 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
4061 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
4062 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
4064 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
4065 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
4069 /* Section 8.23.1 (Depth Texture Comparison Mode) of the
4070 * OpenGL 4.5 spec says:
4072 * "If the texture’s internal format indicates a fixed-point
4073 * depth texture, then D_t and D_ref are clamped to the
4074 * range [0, 1]; otherwise no clamping is performed."
4076 * TC-compatible HTILE promotes Z16 and Z24 to Z32_FLOAT,
4077 * so the depth comparison value isn't clamped for Z16 and
4078 * Z24 anymore. Do it manually here for GFX8-9; GFX10 has
4079 * an explicitly clamped 32-bit float format.
4082 ctx
->ac
.chip_class
>= GFX8
&&
4083 ctx
->ac
.chip_class
<= GFX9
&&
4084 ctx
->abi
->clamp_shadow_reference
) {
4085 LLVMValueRef upgraded
, clamped
;
4087 upgraded
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
.sampler
,
4088 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4089 upgraded
= LLVMBuildLShr(ctx
->ac
.builder
, upgraded
,
4090 LLVMConstInt(ctx
->ac
.i32
, 29, false), "");
4091 upgraded
= LLVMBuildTrunc(ctx
->ac
.builder
, upgraded
, ctx
->ac
.i1
, "");
4092 clamped
= ac_build_clamp(&ctx
->ac
, args
.compare
);
4093 args
.compare
= LLVMBuildSelect(ctx
->ac
.builder
, upgraded
, clamped
,
4097 /* pack derivatives */
4099 int num_src_deriv_channels
, num_dest_deriv_channels
;
4100 switch (instr
->sampler_dim
) {
4101 case GLSL_SAMPLER_DIM_3D
:
4102 case GLSL_SAMPLER_DIM_CUBE
:
4103 num_src_deriv_channels
= 3;
4104 num_dest_deriv_channels
= 3;
4106 case GLSL_SAMPLER_DIM_2D
:
4108 num_src_deriv_channels
= 2;
4109 num_dest_deriv_channels
= 2;
4111 case GLSL_SAMPLER_DIM_1D
:
4112 num_src_deriv_channels
= 1;
4113 if (ctx
->ac
.chip_class
== GFX9
) {
4114 num_dest_deriv_channels
= 2;
4116 num_dest_deriv_channels
= 1;
4121 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
4122 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
4123 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
4124 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
4125 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
4127 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
4128 args
.derivs
[i
] = ctx
->ac
.f32_0
;
4129 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
4133 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
4134 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
4135 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
4136 if (instr
->coord_components
== 3)
4137 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
4138 ac_prepare_cube_coords(&ctx
->ac
,
4139 instr
->op
== nir_texop_txd
, instr
->is_array
,
4140 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
4143 /* Texture coordinates fixups */
4144 if (instr
->coord_components
> 1 &&
4145 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4147 instr
->op
!= nir_texop_txf
) {
4148 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
4151 if (instr
->coord_components
> 2 &&
4152 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
4153 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
4154 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
4155 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
4157 instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
4158 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
4161 if (ctx
->ac
.chip_class
== GFX9
&&
4162 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4163 instr
->op
!= nir_texop_lod
) {
4164 LLVMValueRef filler
;
4165 if (instr
->op
== nir_texop_txf
)
4166 filler
= ctx
->ac
.i32_0
;
4168 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
4170 if (instr
->is_array
)
4171 args
.coords
[2] = args
.coords
[1];
4172 args
.coords
[1] = filler
;
4175 /* Pack sample index */
4176 if (instr
->op
== nir_texop_txf_ms
&& sample_index
)
4177 args
.coords
[instr
->coord_components
] = sample_index
;
4179 if (instr
->op
== nir_texop_samples_identical
) {
4180 struct ac_image_args txf_args
= { 0 };
4181 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
4183 txf_args
.dmask
= 0xf;
4184 txf_args
.resource
= fmask_ptr
;
4185 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
4186 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
4188 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4189 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
4193 if ((instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
||
4194 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
) &&
4195 instr
->op
!= nir_texop_txs
) {
4196 unsigned sample_chan
= instr
->is_array
? 3 : 2;
4197 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
4198 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
4199 instr
->is_array
? args
.coords
[2] : NULL
,
4200 args
.coords
[sample_chan
], fmask_ptr
);
4203 if (args
.offset
&& (instr
->op
== nir_texop_txf
|| instr
->op
== nir_texop_txf_ms
)) {
4204 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
4205 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
4206 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
4207 args
.coords
[i
] = LLVMBuildAdd(
4208 ctx
->ac
.builder
, args
.coords
[i
],
4209 LLVMConstInt(ctx
->ac
.i32
, nir_src_comp_as_uint(instr
->src
[offset_src
].src
, i
), false), "");
4214 /* DMASK was repurposed for GATHER4. 4 components are always
4215 * returned and DMASK works like a swizzle - it selects
4216 * the component to fetch. The only valid DMASK values are
4217 * 1=red, 2=green, 4=blue, 8=alpha. (e.g. 1 returns
4218 * (red,red,red,red) etc.) The ISA document doesn't mention
4222 if (instr
->op
== nir_texop_tg4
) {
4223 if (instr
->is_shadow
)
4226 args
.dmask
= 1 << instr
->component
;
4229 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
) {
4230 args
.dim
= ac_get_sampler_dim(ctx
->ac
.chip_class
, instr
->sampler_dim
, instr
->is_array
);
4231 args
.unorm
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
;
4233 result
= build_tex_intrinsic(ctx
, instr
, &args
);
4235 if (instr
->op
== nir_texop_query_levels
)
4236 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4237 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
4238 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
4239 instr
->op
!= nir_texop_tg4
)
4240 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4241 else if (instr
->op
== nir_texop_txs
&&
4242 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
4244 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4245 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
4246 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4247 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
4248 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
4249 } else if (ctx
->ac
.chip_class
== GFX9
&&
4250 instr
->op
== nir_texop_txs
&&
4251 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4253 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4254 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4255 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
4257 } else if (instr
->dest
.ssa
.num_components
!= 4)
4258 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
4262 assert(instr
->dest
.is_ssa
);
4263 result
= ac_to_integer(&ctx
->ac
, result
);
4264 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4269 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
4271 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
4272 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
4274 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4275 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
4278 static void visit_post_phi(struct ac_nir_context
*ctx
,
4279 nir_phi_instr
*instr
,
4280 LLVMValueRef llvm_phi
)
4282 nir_foreach_phi_src(src
, instr
) {
4283 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
4284 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
4286 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
4290 static void phi_post_pass(struct ac_nir_context
*ctx
)
4292 hash_table_foreach(ctx
->phis
, entry
) {
4293 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
4294 (LLVMValueRef
)entry
->data
);
4299 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
4300 const nir_ssa_undef_instr
*instr
)
4302 unsigned num_components
= instr
->def
.num_components
;
4303 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
4306 if (num_components
== 1)
4307 undef
= LLVMGetUndef(type
);
4309 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
4311 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
4314 static void visit_jump(struct ac_llvm_context
*ctx
,
4315 const nir_jump_instr
*instr
)
4317 switch (instr
->type
) {
4318 case nir_jump_break
:
4319 ac_build_break(ctx
);
4321 case nir_jump_continue
:
4322 ac_build_continue(ctx
);
4325 fprintf(stderr
, "Unknown NIR jump instr: ");
4326 nir_print_instr(&instr
->instr
, stderr
);
4327 fprintf(stderr
, "\n");
4333 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
4334 enum glsl_base_type type
)
4338 case GLSL_TYPE_UINT
:
4339 case GLSL_TYPE_BOOL
:
4340 case GLSL_TYPE_SUBROUTINE
:
4342 case GLSL_TYPE_INT8
:
4343 case GLSL_TYPE_UINT8
:
4345 case GLSL_TYPE_INT16
:
4346 case GLSL_TYPE_UINT16
:
4348 case GLSL_TYPE_FLOAT
:
4350 case GLSL_TYPE_FLOAT16
:
4352 case GLSL_TYPE_INT64
:
4353 case GLSL_TYPE_UINT64
:
4355 case GLSL_TYPE_DOUBLE
:
4358 unreachable("unknown GLSL type");
4363 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
4364 const struct glsl_type
*type
)
4366 if (glsl_type_is_scalar(type
)) {
4367 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
4370 if (glsl_type_is_vector(type
)) {
4371 return LLVMVectorType(
4372 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
4373 glsl_get_vector_elements(type
));
4376 if (glsl_type_is_matrix(type
)) {
4377 return LLVMArrayType(
4378 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
4379 glsl_get_matrix_columns(type
));
4382 if (glsl_type_is_array(type
)) {
4383 return LLVMArrayType(
4384 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
4385 glsl_get_length(type
));
4388 assert(glsl_type_is_struct_or_ifc(type
));
4390 LLVMTypeRef member_types
[glsl_get_length(type
)];
4392 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
4394 glsl_to_llvm_type(ac
,
4395 glsl_get_struct_field(type
, i
));
4398 return LLVMStructTypeInContext(ac
->context
, member_types
,
4399 glsl_get_length(type
), false);
4402 static void visit_deref(struct ac_nir_context
*ctx
,
4403 nir_deref_instr
*instr
)
4405 if (instr
->mode
!= nir_var_mem_shared
&&
4406 instr
->mode
!= nir_var_mem_global
)
4409 LLVMValueRef result
= NULL
;
4410 switch(instr
->deref_type
) {
4411 case nir_deref_type_var
: {
4412 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
4413 result
= entry
->data
;
4416 case nir_deref_type_struct
:
4417 if (instr
->mode
== nir_var_mem_global
) {
4418 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4419 uint64_t offset
= glsl_get_struct_field_offset(parent
->type
,
4420 instr
->strct
.index
);
4421 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4422 LLVMConstInt(ctx
->ac
.i32
, offset
, 0));
4424 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4425 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
4428 case nir_deref_type_array
:
4429 if (instr
->mode
== nir_var_mem_global
) {
4430 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4431 unsigned stride
= glsl_get_explicit_stride(parent
->type
);
4433 if ((glsl_type_is_matrix(parent
->type
) &&
4434 glsl_matrix_type_is_row_major(parent
->type
)) ||
4435 (glsl_type_is_vector(parent
->type
) && stride
== 0))
4436 stride
= type_scalar_size_bytes(parent
->type
);
4439 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4440 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4441 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4443 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4445 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4447 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4448 get_src(ctx
, instr
->arr
.index
));
4451 case nir_deref_type_ptr_as_array
:
4452 if (instr
->mode
== nir_var_mem_global
) {
4453 unsigned stride
= nir_deref_instr_ptr_as_array_stride(instr
);
4455 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4456 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4457 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4459 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4461 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4463 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4464 get_src(ctx
, instr
->arr
.index
));
4467 case nir_deref_type_cast
: {
4468 result
= get_src(ctx
, instr
->parent
);
4470 /* We can't use the structs from LLVM because the shader
4471 * specifies its own offsets. */
4472 LLVMTypeRef pointee_type
= ctx
->ac
.i8
;
4473 if (instr
->mode
== nir_var_mem_shared
)
4474 pointee_type
= glsl_to_llvm_type(&ctx
->ac
, instr
->type
);
4476 unsigned address_space
;
4478 switch(instr
->mode
) {
4479 case nir_var_mem_shared
:
4480 address_space
= AC_ADDR_SPACE_LDS
;
4482 case nir_var_mem_global
:
4483 address_space
= AC_ADDR_SPACE_GLOBAL
;
4486 unreachable("Unhandled address space");
4489 LLVMTypeRef type
= LLVMPointerType(pointee_type
, address_space
);
4491 if (LLVMTypeOf(result
) != type
) {
4492 if (LLVMGetTypeKind(LLVMTypeOf(result
)) == LLVMVectorTypeKind
) {
4493 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
,
4496 result
= LLVMBuildIntToPtr(ctx
->ac
.builder
, result
,
4503 unreachable("Unhandled deref_instr deref type");
4506 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4509 static void visit_cf_list(struct ac_nir_context
*ctx
,
4510 struct exec_list
*list
);
4512 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
4514 nir_foreach_instr(instr
, block
)
4516 switch (instr
->type
) {
4517 case nir_instr_type_alu
:
4518 visit_alu(ctx
, nir_instr_as_alu(instr
));
4520 case nir_instr_type_load_const
:
4521 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
4523 case nir_instr_type_intrinsic
:
4524 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
4526 case nir_instr_type_tex
:
4527 visit_tex(ctx
, nir_instr_as_tex(instr
));
4529 case nir_instr_type_phi
:
4530 visit_phi(ctx
, nir_instr_as_phi(instr
));
4532 case nir_instr_type_ssa_undef
:
4533 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
4535 case nir_instr_type_jump
:
4536 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
4538 case nir_instr_type_deref
:
4539 visit_deref(ctx
, nir_instr_as_deref(instr
));
4542 fprintf(stderr
, "Unknown NIR instr type: ");
4543 nir_print_instr(instr
, stderr
);
4544 fprintf(stderr
, "\n");
4549 _mesa_hash_table_insert(ctx
->defs
, block
,
4550 LLVMGetInsertBlock(ctx
->ac
.builder
));
4553 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
4555 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
4557 nir_block
*then_block
=
4558 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
4560 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
4562 visit_cf_list(ctx
, &if_stmt
->then_list
);
4564 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
4565 nir_block
*else_block
=
4566 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
4568 ac_build_else(&ctx
->ac
, else_block
->index
);
4569 visit_cf_list(ctx
, &if_stmt
->else_list
);
4572 ac_build_endif(&ctx
->ac
, then_block
->index
);
4575 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
4577 nir_block
*first_loop_block
=
4578 (nir_block
*) exec_list_get_head(&loop
->body
);
4580 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
4582 visit_cf_list(ctx
, &loop
->body
);
4584 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
4587 static void visit_cf_list(struct ac_nir_context
*ctx
,
4588 struct exec_list
*list
)
4590 foreach_list_typed(nir_cf_node
, node
, node
, list
)
4592 switch (node
->type
) {
4593 case nir_cf_node_block
:
4594 visit_block(ctx
, nir_cf_node_as_block(node
));
4597 case nir_cf_node_if
:
4598 visit_if(ctx
, nir_cf_node_as_if(node
));
4601 case nir_cf_node_loop
:
4602 visit_loop(ctx
, nir_cf_node_as_loop(node
));
4612 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
4613 struct ac_shader_abi
*abi
,
4614 struct nir_shader
*nir
,
4615 struct nir_variable
*variable
,
4616 gl_shader_stage stage
)
4618 unsigned output_loc
= variable
->data
.driver_location
/ 4;
4619 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4621 /* tess ctrl has it's own load/store paths for outputs */
4622 if (stage
== MESA_SHADER_TESS_CTRL
)
4625 if (stage
== MESA_SHADER_VERTEX
||
4626 stage
== MESA_SHADER_TESS_EVAL
||
4627 stage
== MESA_SHADER_GEOMETRY
) {
4628 int idx
= variable
->data
.location
+ variable
->data
.index
;
4629 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
4630 int length
= nir
->info
.clip_distance_array_size
+
4631 nir
->info
.cull_distance_array_size
;
4640 bool is_16bit
= glsl_type_is_16bit(glsl_without_array(variable
->type
));
4641 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
4642 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
4643 for (unsigned chan
= 0; chan
< 4; chan
++) {
4644 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
4645 ac_build_alloca_undef(ctx
, type
, "");
4651 setup_locals(struct ac_nir_context
*ctx
,
4652 struct nir_function
*func
)
4655 ctx
->num_locals
= 0;
4656 nir_foreach_variable(variable
, &func
->impl
->locals
) {
4657 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4658 variable
->data
.driver_location
= ctx
->num_locals
* 4;
4659 variable
->data
.location_frac
= 0;
4660 ctx
->num_locals
+= attrib_count
;
4662 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
4666 for (i
= 0; i
< ctx
->num_locals
; i
++) {
4667 for (j
= 0; j
< 4; j
++) {
4668 ctx
->locals
[i
* 4 + j
] =
4669 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
4675 setup_scratch(struct ac_nir_context
*ctx
,
4676 struct nir_shader
*shader
)
4678 if (shader
->scratch_size
== 0)
4681 ctx
->scratch
= ac_build_alloca_undef(&ctx
->ac
,
4682 LLVMArrayType(ctx
->ac
.i8
, shader
->scratch_size
),
4687 setup_constant_data(struct ac_nir_context
*ctx
,
4688 struct nir_shader
*shader
)
4690 if (!shader
->constant_data
)
4694 LLVMConstStringInContext(ctx
->ac
.context
,
4695 shader
->constant_data
,
4696 shader
->constant_data_size
,
4698 LLVMTypeRef type
= LLVMArrayType(ctx
->ac
.i8
, shader
->constant_data_size
);
4700 /* We want to put the constant data in the CONST address space so that
4701 * we can use scalar loads. However, LLVM versions before 10 put these
4702 * variables in the same section as the code, which is unacceptable
4703 * for RadeonSI as it needs to relocate all the data sections after
4704 * the code sections. See https://reviews.llvm.org/D65813.
4706 unsigned address_space
=
4707 LLVM_VERSION_MAJOR
< 10 ? AC_ADDR_SPACE_GLOBAL
: AC_ADDR_SPACE_CONST
;
4709 LLVMValueRef global
=
4710 LLVMAddGlobalInAddressSpace(ctx
->ac
.module
, type
,
4714 LLVMSetInitializer(global
, data
);
4715 LLVMSetGlobalConstant(global
, true);
4716 LLVMSetVisibility(global
, LLVMHiddenVisibility
);
4717 ctx
->constant_data
= global
;
4721 setup_shared(struct ac_nir_context
*ctx
,
4722 struct nir_shader
*nir
)
4724 nir_foreach_variable(variable
, &nir
->shared
) {
4725 LLVMValueRef shared
=
4726 LLVMAddGlobalInAddressSpace(
4727 ctx
->ac
.module
, glsl_to_llvm_type(&ctx
->ac
, variable
->type
),
4728 variable
->name
? variable
->name
: "",
4730 _mesa_hash_table_insert(ctx
->vars
, variable
, shared
);
4734 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
4735 const struct ac_shader_args
*args
, struct nir_shader
*nir
)
4737 struct ac_nir_context ctx
= {};
4738 struct nir_function
*func
;
4744 ctx
.stage
= nir
->info
.stage
;
4745 ctx
.info
= &nir
->info
;
4747 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
4749 nir_foreach_variable(variable
, &nir
->outputs
)
4750 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
4753 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4754 _mesa_key_pointer_equal
);
4755 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4756 _mesa_key_pointer_equal
);
4757 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4758 _mesa_key_pointer_equal
);
4760 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
4762 nir_index_ssa_defs(func
->impl
);
4763 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
4765 setup_locals(&ctx
, func
);
4766 setup_scratch(&ctx
, nir
);
4767 setup_constant_data(&ctx
, nir
);
4769 if (gl_shader_stage_is_compute(nir
->info
.stage
))
4770 setup_shared(&ctx
, nir
);
4772 visit_cf_list(&ctx
, &func
->impl
->body
);
4773 phi_post_pass(&ctx
);
4775 if (!gl_shader_stage_is_compute(nir
->info
.stage
))
4776 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
4781 ralloc_free(ctx
.defs
);
4782 ralloc_free(ctx
.phis
);
4783 ralloc_free(ctx
.vars
);
4787 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
4789 /* Lower large variables to scratch first so that we won't bloat the
4790 * shader by generating large if ladders for them. We later lower
4791 * scratch to alloca's, assuming LLVM won't generate VGPR indexing.
4793 NIR_PASS_V(nir
, nir_lower_vars_to_scratch
,
4794 nir_var_function_temp
,
4796 glsl_get_natural_size_align_bytes
);
4798 /* While it would be nice not to have this flag, we are constrained
4799 * by the reality that LLVM 9.0 has buggy VGPR indexing on GFX9.
4801 bool llvm_has_working_vgpr_indexing
= chip_class
!= GFX9
;
4803 /* TODO: Indirect indexing of GS inputs is unimplemented.
4805 * TCS and TES load inputs directly from LDS or offchip memory, so
4806 * indirect indexing is trivial.
4808 nir_variable_mode indirect_mask
= 0;
4809 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
4810 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
4811 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
4812 !llvm_has_working_vgpr_indexing
)) {
4813 indirect_mask
|= nir_var_shader_in
;
4815 if (!llvm_has_working_vgpr_indexing
&&
4816 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
4817 indirect_mask
|= nir_var_shader_out
;
4819 /* TODO: We shouldn't need to do this, however LLVM isn't currently
4820 * smart enough to handle indirects without causing excess spilling
4821 * causing the gpu to hang.
4823 * See the following thread for more details of the problem:
4824 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
4826 indirect_mask
|= nir_var_function_temp
;
4828 nir_lower_indirect_derefs(nir
, indirect_mask
);
4832 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
4834 if (intrin
->intrinsic
!= nir_intrinsic_store_deref
)
4838 nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[0]));
4840 if (var
->data
.mode
!= nir_var_shader_out
)
4843 unsigned writemask
= 0;
4844 const int location
= var
->data
.location
;
4845 unsigned first_component
= var
->data
.location_frac
;
4846 unsigned num_comps
= intrin
->dest
.ssa
.num_components
;
4848 if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
4849 writemask
= ((1 << (num_comps
+ 1)) - 1) << first_component
;
4850 else if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
4851 writemask
= (((1 << (num_comps
+ 1)) - 1) << first_component
) << 4;
4857 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
4858 unsigned *cond_block_tf_writemask
,
4859 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
4861 switch (cf_node
->type
) {
4862 case nir_cf_node_block
: {
4863 nir_block
*block
= nir_cf_node_as_block(cf_node
);
4864 nir_foreach_instr(instr
, block
) {
4865 if (instr
->type
!= nir_instr_type_intrinsic
)
4868 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
4869 if (intrin
->intrinsic
== nir_intrinsic_barrier
) {
4871 /* If we find a barrier in nested control flow put this in the
4872 * too hard basket. In GLSL this is not possible but it is in
4876 *tessfactors_are_def_in_all_invocs
= false;
4880 /* The following case must be prevented:
4881 * gl_TessLevelInner = ...;
4883 * if (gl_InvocationID == 1)
4884 * gl_TessLevelInner = ...;
4886 * If you consider disjoint code segments separated by barriers, each
4887 * such segment that writes tess factor channels should write the same
4888 * channels in all codepaths within that segment.
4890 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
4891 /* Accumulate the result: */
4892 *tessfactors_are_def_in_all_invocs
&=
4893 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
4895 /* Analyze the next code segment from scratch. */
4896 *upper_block_tf_writemask
= 0;
4897 *cond_block_tf_writemask
= 0;
4900 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
4905 case nir_cf_node_if
: {
4906 unsigned then_tessfactor_writemask
= 0;
4907 unsigned else_tessfactor_writemask
= 0;
4909 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
4910 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
4911 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
4912 cond_block_tf_writemask
,
4913 tessfactors_are_def_in_all_invocs
, true);
4916 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
4917 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
4918 cond_block_tf_writemask
,
4919 tessfactors_are_def_in_all_invocs
, true);
4922 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
4923 /* If both statements write the same tess factor channels,
4924 * we can say that the upper block writes them too.
4926 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
4927 else_tessfactor_writemask
;
4928 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
4929 else_tessfactor_writemask
;
4934 case nir_cf_node_loop
: {
4935 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
4936 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
4937 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
4938 cond_block_tf_writemask
,
4939 tessfactors_are_def_in_all_invocs
, true);
4945 unreachable("unknown cf node type");
4950 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
4952 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
4954 /* The pass works as follows:
4955 * If all codepaths write tess factors, we can say that all
4956 * invocations define tess factors.
4958 * Each tess factor channel is tracked separately.
4960 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
4961 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
4963 /* Initial value = true. Here the pass will accumulate results from
4964 * multiple segments surrounded by barriers. If tess factors aren't
4965 * written at all, it's a shader bug and we don't care if this will be
4968 bool tessfactors_are_def_in_all_invocs
= true;
4970 nir_foreach_function(function
, nir
) {
4971 if (function
->impl
) {
4972 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
4973 scan_tess_ctrl(node
, &main_block_tf_writemask
,
4974 &cond_block_tf_writemask
,
4975 &tessfactors_are_def_in_all_invocs
,
4981 /* Accumulate the result for the last code segment separated by a
4984 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
4985 tessfactors_are_def_in_all_invocs
&=
4986 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
4989 return tessfactors_are_def_in_all_invocs
;