2 * Copyright © 2016 Bas Nieuwenhuizen
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 #include "ac_nir_to_llvm.h"
25 #include "ac_llvm_build.h"
26 #include "ac_llvm_util.h"
27 #include "ac_binary.h"
30 #include "nir/nir_deref.h"
31 #include "util/bitscan.h"
32 #include "util/u_math.h"
33 #include "ac_shader_abi.h"
34 #include "ac_shader_util.h"
36 struct ac_nir_context
{
37 struct ac_llvm_context ac
;
38 struct ac_shader_abi
*abi
;
40 gl_shader_stage stage
;
43 LLVMValueRef
*ssa_defs
;
47 struct hash_table
*defs
;
48 struct hash_table
*phis
;
49 struct hash_table
*vars
;
51 LLVMValueRef main_function
;
52 LLVMBasicBlockRef continue_block
;
53 LLVMBasicBlockRef break_block
;
59 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
60 nir_deref_instr
*deref_instr
,
61 enum ac_descriptor_type desc_type
,
62 const nir_instr
*instr
,
63 bool image
, bool write
);
66 build_store_values_extended(struct ac_llvm_context
*ac
,
69 unsigned value_stride
,
72 LLVMBuilderRef builder
= ac
->builder
;
75 for (i
= 0; i
< value_count
; i
++) {
76 LLVMValueRef ptr
= values
[i
* value_stride
];
77 LLVMValueRef index
= LLVMConstInt(ac
->i32
, i
, false);
78 LLVMValueRef value
= LLVMBuildExtractElement(builder
, vec
, index
, "");
79 LLVMBuildStore(builder
, value
, ptr
);
83 static enum ac_image_dim
84 get_ac_sampler_dim(const struct ac_llvm_context
*ctx
, enum glsl_sampler_dim dim
,
88 case GLSL_SAMPLER_DIM_1D
:
89 if (ctx
->chip_class
== GFX9
)
90 return is_array
? ac_image_2darray
: ac_image_2d
;
91 return is_array
? ac_image_1darray
: ac_image_1d
;
92 case GLSL_SAMPLER_DIM_2D
:
93 case GLSL_SAMPLER_DIM_RECT
:
94 case GLSL_SAMPLER_DIM_EXTERNAL
:
95 return is_array
? ac_image_2darray
: ac_image_2d
;
96 case GLSL_SAMPLER_DIM_3D
:
98 case GLSL_SAMPLER_DIM_CUBE
:
100 case GLSL_SAMPLER_DIM_MS
:
101 return is_array
? ac_image_2darraymsaa
: ac_image_2dmsaa
;
102 case GLSL_SAMPLER_DIM_SUBPASS
:
103 return ac_image_2darray
;
104 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
105 return ac_image_2darraymsaa
;
107 unreachable("bad sampler dim");
111 static enum ac_image_dim
112 get_ac_image_dim(const struct ac_llvm_context
*ctx
, enum glsl_sampler_dim sdim
,
115 enum ac_image_dim dim
= get_ac_sampler_dim(ctx
, sdim
, is_array
);
117 if (dim
== ac_image_cube
||
118 (ctx
->chip_class
<= GFX8
&& dim
== ac_image_3d
))
119 dim
= ac_image_2darray
;
124 static LLVMTypeRef
get_def_type(struct ac_nir_context
*ctx
,
125 const nir_ssa_def
*def
)
127 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, def
->bit_size
);
128 if (def
->num_components
> 1) {
129 type
= LLVMVectorType(type
, def
->num_components
);
134 static LLVMValueRef
get_src(struct ac_nir_context
*nir
, nir_src src
)
137 return nir
->ssa_defs
[src
.ssa
->index
];
141 get_memory_ptr(struct ac_nir_context
*ctx
, nir_src src
)
143 LLVMValueRef ptr
= get_src(ctx
, src
);
144 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ctx
->ac
.lds
, &ptr
, 1, "");
145 int addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
147 return LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
148 LLVMPointerType(ctx
->ac
.i32
, addr_space
), "");
151 static LLVMBasicBlockRef
get_block(struct ac_nir_context
*nir
,
152 const struct nir_block
*b
)
154 struct hash_entry
*entry
= _mesa_hash_table_search(nir
->defs
, b
);
155 return (LLVMBasicBlockRef
)entry
->data
;
158 static LLVMValueRef
get_alu_src(struct ac_nir_context
*ctx
,
160 unsigned num_components
)
162 LLVMValueRef value
= get_src(ctx
, src
.src
);
163 bool need_swizzle
= false;
166 unsigned src_components
= ac_get_llvm_num_components(value
);
167 for (unsigned i
= 0; i
< num_components
; ++i
) {
168 assert(src
.swizzle
[i
] < src_components
);
169 if (src
.swizzle
[i
] != i
)
173 if (need_swizzle
|| num_components
!= src_components
) {
174 LLVMValueRef masks
[] = {
175 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[0], false),
176 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[1], false),
177 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[2], false),
178 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[3], false)};
180 if (src_components
> 1 && num_components
== 1) {
181 value
= LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
183 } else if (src_components
== 1 && num_components
> 1) {
184 LLVMValueRef values
[] = {value
, value
, value
, value
};
185 value
= ac_build_gather_values(&ctx
->ac
, values
, num_components
);
187 LLVMValueRef swizzle
= LLVMConstVector(masks
, num_components
);
188 value
= LLVMBuildShuffleVector(ctx
->ac
.builder
, value
, value
,
197 static LLVMValueRef
emit_int_cmp(struct ac_llvm_context
*ctx
,
198 LLVMIntPredicate pred
, LLVMValueRef src0
,
201 LLVMValueRef result
= LLVMBuildICmp(ctx
->builder
, pred
, src0
, src1
, "");
202 return LLVMBuildSelect(ctx
->builder
, result
,
203 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
207 static LLVMValueRef
emit_float_cmp(struct ac_llvm_context
*ctx
,
208 LLVMRealPredicate pred
, LLVMValueRef src0
,
212 src0
= ac_to_float(ctx
, src0
);
213 src1
= ac_to_float(ctx
, src1
);
214 result
= LLVMBuildFCmp(ctx
->builder
, pred
, src0
, src1
, "");
215 return LLVMBuildSelect(ctx
->builder
, result
,
216 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
220 static LLVMValueRef
emit_intrin_1f_param(struct ac_llvm_context
*ctx
,
222 LLVMTypeRef result_type
,
226 LLVMValueRef params
[] = {
227 ac_to_float(ctx
, src0
),
230 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
231 ac_get_elem_bits(ctx
, result_type
));
232 assert(length
< sizeof(name
));
233 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 1, AC_FUNC_ATTR_READNONE
);
236 static LLVMValueRef
emit_intrin_2f_param(struct ac_llvm_context
*ctx
,
238 LLVMTypeRef result_type
,
239 LLVMValueRef src0
, LLVMValueRef src1
)
242 LLVMValueRef params
[] = {
243 ac_to_float(ctx
, src0
),
244 ac_to_float(ctx
, src1
),
247 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
248 ac_get_elem_bits(ctx
, result_type
));
249 assert(length
< sizeof(name
));
250 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 2, AC_FUNC_ATTR_READNONE
);
253 static LLVMValueRef
emit_intrin_3f_param(struct ac_llvm_context
*ctx
,
255 LLVMTypeRef result_type
,
256 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
259 LLVMValueRef params
[] = {
260 ac_to_float(ctx
, src0
),
261 ac_to_float(ctx
, src1
),
262 ac_to_float(ctx
, src2
),
265 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
266 ac_get_elem_bits(ctx
, result_type
));
267 assert(length
< sizeof(name
));
268 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 3, AC_FUNC_ATTR_READNONE
);
271 static LLVMValueRef
emit_bcsel(struct ac_llvm_context
*ctx
,
272 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
274 assert(LLVMGetTypeKind(LLVMTypeOf(src0
)) != LLVMVectorTypeKind
);
276 LLVMValueRef v
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
,
278 return LLVMBuildSelect(ctx
->builder
, v
,
279 ac_to_integer_or_pointer(ctx
, src1
),
280 ac_to_integer_or_pointer(ctx
, src2
), "");
283 static LLVMValueRef
emit_iabs(struct ac_llvm_context
*ctx
,
286 return ac_build_imax(ctx
, src0
, LLVMBuildNeg(ctx
->builder
, src0
, ""));
289 static LLVMValueRef
emit_uint_carry(struct ac_llvm_context
*ctx
,
291 LLVMValueRef src0
, LLVMValueRef src1
)
293 LLVMTypeRef ret_type
;
294 LLVMTypeRef types
[] = { ctx
->i32
, ctx
->i1
};
296 LLVMValueRef params
[] = { src0
, src1
};
297 ret_type
= LLVMStructTypeInContext(ctx
->context
, types
,
300 res
= ac_build_intrinsic(ctx
, intrin
, ret_type
,
301 params
, 2, AC_FUNC_ATTR_READNONE
);
303 res
= LLVMBuildExtractValue(ctx
->builder
, res
, 1, "");
304 res
= LLVMBuildZExt(ctx
->builder
, res
, ctx
->i32
, "");
308 static LLVMValueRef
emit_b2f(struct ac_llvm_context
*ctx
,
312 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
,
313 LLVMBuildBitCast(ctx
->builder
, LLVMConstReal(ctx
->f32
, 1.0), ctx
->i32
, ""),
315 result
= LLVMBuildBitCast(ctx
->builder
, result
, ctx
->f32
, "");
319 return LLVMBuildFPTrunc(ctx
->builder
, result
, ctx
->f16
, "");
323 return LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f64
, "");
325 unreachable("Unsupported bit size.");
329 static LLVMValueRef
emit_f2b(struct ac_llvm_context
*ctx
,
332 src0
= ac_to_float(ctx
, src0
);
333 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
334 return LLVMBuildSExt(ctx
->builder
,
335 LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
, src0
, zero
, ""),
339 static LLVMValueRef
emit_b2i(struct ac_llvm_context
*ctx
,
343 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
, ctx
->i32_1
, "");
347 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i8
, "");
349 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i16
, "");
353 return LLVMBuildZExt(ctx
->builder
, result
, ctx
->i64
, "");
355 unreachable("Unsupported bit size.");
359 static LLVMValueRef
emit_i2b(struct ac_llvm_context
*ctx
,
362 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
363 return LLVMBuildSExt(ctx
->builder
,
364 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
, zero
, ""),
368 static LLVMValueRef
emit_f2f16(struct ac_llvm_context
*ctx
,
372 LLVMValueRef cond
= NULL
;
374 src0
= ac_to_float(ctx
, src0
);
375 result
= LLVMBuildFPTrunc(ctx
->builder
, src0
, ctx
->f16
, "");
377 if (ctx
->chip_class
>= GFX8
) {
378 LLVMValueRef args
[2];
379 /* Check if the result is a denormal - and flush to 0 if so. */
381 args
[1] = LLVMConstInt(ctx
->i32
, N_SUBNORMAL
| P_SUBNORMAL
, false);
382 cond
= ac_build_intrinsic(ctx
, "llvm.amdgcn.class.f16", ctx
->i1
, args
, 2, AC_FUNC_ATTR_READNONE
);
385 /* need to convert back up to f32 */
386 result
= LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f32
, "");
388 if (ctx
->chip_class
>= GFX8
)
389 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
392 /* 0x38800000 is smallest half float value (2^-14) in 32-bit float,
393 * so compare the result and flush to 0 if it's smaller.
395 LLVMValueRef temp
, cond2
;
396 temp
= emit_intrin_1f_param(ctx
, "llvm.fabs", ctx
->f32
, result
);
397 cond
= LLVMBuildFCmp(ctx
->builder
, LLVMRealUGT
,
398 LLVMBuildBitCast(ctx
->builder
, LLVMConstInt(ctx
->i32
, 0x38800000, false), ctx
->f32
, ""),
400 cond2
= LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
,
401 temp
, ctx
->f32_0
, "");
402 cond
= LLVMBuildAnd(ctx
->builder
, cond
, cond2
, "");
403 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
408 static LLVMValueRef
emit_umul_high(struct ac_llvm_context
*ctx
,
409 LLVMValueRef src0
, LLVMValueRef src1
)
411 LLVMValueRef dst64
, result
;
412 src0
= LLVMBuildZExt(ctx
->builder
, src0
, ctx
->i64
, "");
413 src1
= LLVMBuildZExt(ctx
->builder
, src1
, ctx
->i64
, "");
415 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
416 dst64
= LLVMBuildLShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
417 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
421 static LLVMValueRef
emit_imul_high(struct ac_llvm_context
*ctx
,
422 LLVMValueRef src0
, LLVMValueRef src1
)
424 LLVMValueRef dst64
, result
;
425 src0
= LLVMBuildSExt(ctx
->builder
, src0
, ctx
->i64
, "");
426 src1
= LLVMBuildSExt(ctx
->builder
, src1
, ctx
->i64
, "");
428 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
429 dst64
= LLVMBuildAShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
430 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
434 static LLVMValueRef
emit_bfm(struct ac_llvm_context
*ctx
,
435 LLVMValueRef bits
, LLVMValueRef offset
)
437 /* mask = ((1 << bits) - 1) << offset */
438 return LLVMBuildShl(ctx
->builder
,
439 LLVMBuildSub(ctx
->builder
,
440 LLVMBuildShl(ctx
->builder
,
447 static LLVMValueRef
emit_bitfield_select(struct ac_llvm_context
*ctx
,
448 LLVMValueRef mask
, LLVMValueRef insert
,
452 * (mask & insert) | (~mask & base) = base ^ (mask & (insert ^ base))
453 * Use the right-hand side, which the LLVM backend can convert to V_BFI.
455 return LLVMBuildXor(ctx
->builder
, base
,
456 LLVMBuildAnd(ctx
->builder
, mask
,
457 LLVMBuildXor(ctx
->builder
, insert
, base
, ""), ""), "");
460 static LLVMValueRef
emit_pack_2x16(struct ac_llvm_context
*ctx
,
462 LLVMValueRef (*pack
)(struct ac_llvm_context
*ctx
,
463 LLVMValueRef args
[2]))
465 LLVMValueRef comp
[2];
467 src0
= ac_to_float(ctx
, src0
);
468 comp
[0] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_0
, "");
469 comp
[1] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_1
, "");
471 return LLVMBuildBitCast(ctx
->builder
, pack(ctx
, comp
), ctx
->i32
, "");
474 static LLVMValueRef
emit_unpack_half_2x16(struct ac_llvm_context
*ctx
,
477 LLVMValueRef const16
= LLVMConstInt(ctx
->i32
, 16, false);
478 LLVMValueRef temps
[2], val
;
481 for (i
= 0; i
< 2; i
++) {
482 val
= i
== 1 ? LLVMBuildLShr(ctx
->builder
, src0
, const16
, "") : src0
;
483 val
= LLVMBuildTrunc(ctx
->builder
, val
, ctx
->i16
, "");
484 val
= LLVMBuildBitCast(ctx
->builder
, val
, ctx
->f16
, "");
485 temps
[i
] = LLVMBuildFPExt(ctx
->builder
, val
, ctx
->f32
, "");
487 return ac_build_gather_values(ctx
, temps
, 2);
490 static LLVMValueRef
emit_ddxy(struct ac_nir_context
*ctx
,
498 if (op
== nir_op_fddx_fine
)
499 mask
= AC_TID_MASK_LEFT
;
500 else if (op
== nir_op_fddy_fine
)
501 mask
= AC_TID_MASK_TOP
;
503 mask
= AC_TID_MASK_TOP_LEFT
;
505 /* for DDX we want to next X pixel, DDY next Y pixel. */
506 if (op
== nir_op_fddx_fine
||
507 op
== nir_op_fddx_coarse
||
513 result
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, src0
);
517 static void visit_alu(struct ac_nir_context
*ctx
, const nir_alu_instr
*instr
)
519 LLVMValueRef src
[4], result
= NULL
;
520 unsigned num_components
= instr
->dest
.dest
.ssa
.num_components
;
521 unsigned src_components
;
522 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.dest
.ssa
);
524 assert(nir_op_infos
[instr
->op
].num_inputs
<= ARRAY_SIZE(src
));
531 case nir_op_pack_half_2x16
:
532 case nir_op_pack_snorm_2x16
:
533 case nir_op_pack_unorm_2x16
:
536 case nir_op_unpack_half_2x16
:
539 case nir_op_cube_face_coord
:
540 case nir_op_cube_face_index
:
544 src_components
= num_components
;
547 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
548 src
[i
] = get_alu_src(ctx
, instr
->src
[i
], src_components
);
555 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
556 result
= LLVMBuildFNeg(ctx
->ac
.builder
, src
[0], "");
559 result
= LLVMBuildNeg(ctx
->ac
.builder
, src
[0], "");
562 result
= LLVMBuildNot(ctx
->ac
.builder
, src
[0], "");
565 result
= LLVMBuildAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
568 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
569 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
570 result
= LLVMBuildFAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
573 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
574 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
575 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], src
[1], "");
578 result
= LLVMBuildSub(ctx
->ac
.builder
, src
[0], src
[1], "");
581 result
= LLVMBuildMul(ctx
->ac
.builder
, src
[0], src
[1], "");
584 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
587 result
= LLVMBuildURem(ctx
->ac
.builder
, src
[0], src
[1], "");
590 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
591 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
592 result
= ac_build_fdiv(&ctx
->ac
, src
[0], src
[1]);
593 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
594 ac_to_float_type(&ctx
->ac
, def_type
), result
);
595 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[1] , result
, "");
596 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], result
, "");
599 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
600 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
601 result
= LLVMBuildFRem(ctx
->ac
.builder
, src
[0], src
[1], "");
604 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
607 result
= LLVMBuildSDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
610 result
= LLVMBuildUDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
613 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
614 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
615 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[0], src
[1], "");
618 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
619 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(src
[0]), 1.0), src
[0]);
622 result
= LLVMBuildAnd(ctx
->ac
.builder
, src
[0], src
[1], "");
625 result
= LLVMBuildOr(ctx
->ac
.builder
, src
[0], src
[1], "");
628 result
= LLVMBuildXor(ctx
->ac
.builder
, src
[0], src
[1], "");
631 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
632 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
633 LLVMTypeOf(src
[0]), "");
634 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
635 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
636 LLVMTypeOf(src
[0]), "");
637 result
= LLVMBuildShl(ctx
->ac
.builder
, src
[0], src
[1], "");
640 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
641 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
642 LLVMTypeOf(src
[0]), "");
643 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
644 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
645 LLVMTypeOf(src
[0]), "");
646 result
= LLVMBuildAShr(ctx
->ac
.builder
, src
[0], src
[1], "");
649 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
650 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
651 LLVMTypeOf(src
[0]), "");
652 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
653 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
654 LLVMTypeOf(src
[0]), "");
655 result
= LLVMBuildLShr(ctx
->ac
.builder
, src
[0], src
[1], "");
658 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
661 result
= emit_int_cmp(&ctx
->ac
, LLVMIntNE
, src
[0], src
[1]);
664 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, src
[0], src
[1]);
667 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSGE
, src
[0], src
[1]);
670 result
= emit_int_cmp(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
673 result
= emit_int_cmp(&ctx
->ac
, LLVMIntUGE
, src
[0], src
[1]);
676 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOEQ
, src
[0], src
[1]);
679 result
= emit_float_cmp(&ctx
->ac
, LLVMRealUNE
, src
[0], src
[1]);
682 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOLT
, src
[0], src
[1]);
685 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOGE
, src
[0], src
[1]);
688 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.fabs",
689 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
692 result
= emit_iabs(&ctx
->ac
, src
[0]);
695 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
698 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
701 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
704 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
707 result
= ac_build_isign(&ctx
->ac
, src
[0],
708 instr
->dest
.dest
.ssa
.bit_size
);
711 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
712 result
= ac_build_fsign(&ctx
->ac
, src
[0],
713 instr
->dest
.dest
.ssa
.bit_size
);
716 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
717 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
720 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.trunc",
721 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
724 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.ceil",
725 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
727 case nir_op_fround_even
:
728 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.rint",
729 ac_to_float_type(&ctx
->ac
, def_type
),src
[0]);
732 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
733 result
= ac_build_fract(&ctx
->ac
, src
[0],
734 instr
->dest
.dest
.ssa
.bit_size
);
737 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sin",
738 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
741 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.cos",
742 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
745 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
746 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
749 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.exp2",
750 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
753 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.log2",
754 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
757 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
758 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
759 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(result
), 1.0), result
);
761 case nir_op_frexp_exp
:
762 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
763 result
= ac_build_frexp_exp(&ctx
->ac
, src
[0],
764 ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])));
765 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) == 16)
766 result
= LLVMBuildSExt(ctx
->ac
.builder
, result
,
769 case nir_op_frexp_sig
:
770 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
771 result
= ac_build_frexp_mant(&ctx
->ac
, src
[0],
772 instr
->dest
.dest
.ssa
.bit_size
);
775 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.pow",
776 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
779 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
780 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
781 if (ctx
->ac
.chip_class
< GFX9
&&
782 instr
->dest
.dest
.ssa
.bit_size
== 32) {
783 /* Only pre-GFX9 chips do not flush denorms. */
784 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.canonicalize",
785 ac_to_float_type(&ctx
->ac
, def_type
),
790 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
791 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
792 if (ctx
->ac
.chip_class
< GFX9
&&
793 instr
->dest
.dest
.ssa
.bit_size
== 32) {
794 /* Only pre-GFX9 chips do not flush denorms. */
795 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.canonicalize",
796 ac_to_float_type(&ctx
->ac
, def_type
),
801 result
= emit_intrin_3f_param(&ctx
->ac
, "llvm.fmuladd",
802 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1], src
[2]);
805 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
806 if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 32)
807 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f32", ctx
->ac
.f32
, src
, 2, AC_FUNC_ATTR_READNONE
);
808 else if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 16)
809 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f16", ctx
->ac
.f16
, src
, 2, AC_FUNC_ATTR_READNONE
);
811 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f64", ctx
->ac
.f64
, src
, 2, AC_FUNC_ATTR_READNONE
);
814 result
= emit_bfm(&ctx
->ac
, src
[0], src
[1]);
816 case nir_op_bitfield_select
:
817 result
= emit_bitfield_select(&ctx
->ac
, src
[0], src
[1], src
[2]);
820 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], false);
823 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], true);
825 case nir_op_bitfield_reverse
:
826 result
= ac_build_bitfield_reverse(&ctx
->ac
, src
[0]);
828 case nir_op_bit_count
:
829 result
= ac_build_bit_count(&ctx
->ac
, src
[0]);
834 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
835 src
[i
] = ac_to_integer(&ctx
->ac
, src
[i
]);
836 result
= ac_build_gather_values(&ctx
->ac
, src
, num_components
);
842 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
843 result
= LLVMBuildFPToSI(ctx
->ac
.builder
, src
[0], def_type
, "");
849 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
850 result
= LLVMBuildFPToUI(ctx
->ac
.builder
, src
[0], def_type
, "");
855 result
= LLVMBuildSIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
860 result
= LLVMBuildUIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
862 case nir_op_f2f16_rtz
:
863 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
864 if (LLVMTypeOf(src
[0]) == ctx
->ac
.f64
)
865 src
[0] = LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ctx
->ac
.f32
, "");
866 LLVMValueRef param
[2] = { src
[0], ctx
->ac
.f32_0
};
867 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, param
);
868 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
870 case nir_op_f2f16_rtne
:
874 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
875 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
876 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
878 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
884 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
885 result
= LLVMBuildZExt(ctx
->ac
.builder
, src
[0], def_type
, "");
887 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
893 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
894 result
= LLVMBuildSExt(ctx
->ac
.builder
, src
[0], def_type
, "");
896 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
899 result
= emit_bcsel(&ctx
->ac
, src
[0], src
[1], src
[2]);
901 case nir_op_find_lsb
:
902 result
= ac_find_lsb(&ctx
->ac
, ctx
->ac
.i32
, src
[0]);
904 case nir_op_ufind_msb
:
905 result
= ac_build_umsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
907 case nir_op_ifind_msb
:
908 result
= ac_build_imsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
910 case nir_op_uadd_carry
:
911 result
= emit_uint_carry(&ctx
->ac
, "llvm.uadd.with.overflow.i32", src
[0], src
[1]);
913 case nir_op_usub_borrow
:
914 result
= emit_uint_carry(&ctx
->ac
, "llvm.usub.with.overflow.i32", src
[0], src
[1]);
919 result
= emit_b2f(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
922 result
= emit_f2b(&ctx
->ac
, src
[0]);
928 result
= emit_b2i(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
931 result
= emit_i2b(&ctx
->ac
, src
[0]);
933 case nir_op_fquantize2f16
:
934 result
= emit_f2f16(&ctx
->ac
, src
[0]);
936 case nir_op_umul_high
:
937 result
= emit_umul_high(&ctx
->ac
, src
[0], src
[1]);
939 case nir_op_imul_high
:
940 result
= emit_imul_high(&ctx
->ac
, src
[0], src
[1]);
942 case nir_op_pack_half_2x16
:
943 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pkrtz_f16
);
945 case nir_op_pack_snorm_2x16
:
946 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_i16
);
948 case nir_op_pack_unorm_2x16
:
949 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_u16
);
951 case nir_op_unpack_half_2x16
:
952 result
= emit_unpack_half_2x16(&ctx
->ac
, src
[0]);
956 case nir_op_fddx_fine
:
957 case nir_op_fddy_fine
:
958 case nir_op_fddx_coarse
:
959 case nir_op_fddy_coarse
:
960 result
= emit_ddxy(ctx
, instr
->op
, src
[0]);
963 case nir_op_unpack_64_2x32_split_x
: {
964 assert(ac_get_llvm_num_components(src
[0]) == 1);
965 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
968 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
973 case nir_op_unpack_64_2x32_split_y
: {
974 assert(ac_get_llvm_num_components(src
[0]) == 1);
975 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
978 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
983 case nir_op_pack_64_2x32_split
: {
984 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
985 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i64
, "");
989 case nir_op_pack_32_2x16_split
: {
990 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
991 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
995 case nir_op_unpack_32_2x16_split_x
: {
996 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
999 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1004 case nir_op_unpack_32_2x16_split_y
: {
1005 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1008 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1013 case nir_op_cube_face_coord
: {
1014 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1015 LLVMValueRef results
[2];
1017 for (unsigned chan
= 0; chan
< 3; chan
++)
1018 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1019 results
[0] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubesc",
1020 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1021 results
[1] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubetc",
1022 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1023 LLVMValueRef ma
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubema",
1024 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1025 results
[0] = ac_build_fdiv(&ctx
->ac
, results
[0], ma
);
1026 results
[1] = ac_build_fdiv(&ctx
->ac
, results
[1], ma
);
1027 LLVMValueRef offset
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
1028 results
[0] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[0], offset
, "");
1029 results
[1] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[1], offset
, "");
1030 result
= ac_build_gather_values(&ctx
->ac
, results
, 2);
1034 case nir_op_cube_face_index
: {
1035 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1037 for (unsigned chan
= 0; chan
< 3; chan
++)
1038 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1039 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubeid",
1040 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1045 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1046 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1047 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1048 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1051 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1052 result
= ac_build_umin(&ctx
->ac
, result
, src
[2]);
1055 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1056 result
= ac_build_imin(&ctx
->ac
, result
, src
[2]);
1059 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1060 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1061 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1062 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1065 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1066 result
= ac_build_umax(&ctx
->ac
, result
, src
[2]);
1069 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1070 result
= ac_build_imax(&ctx
->ac
, result
, src
[2]);
1072 case nir_op_fmed3
: {
1073 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1074 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
1075 src
[2] = ac_to_float(&ctx
->ac
, src
[2]);
1076 result
= ac_build_fmed3(&ctx
->ac
, src
[0], src
[1], src
[2],
1077 instr
->dest
.dest
.ssa
.bit_size
);
1080 case nir_op_imed3
: {
1081 LLVMValueRef tmp1
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1082 LLVMValueRef tmp2
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1083 tmp2
= ac_build_imin(&ctx
->ac
, tmp2
, src
[2]);
1084 result
= ac_build_imax(&ctx
->ac
, tmp1
, tmp2
);
1087 case nir_op_umed3
: {
1088 LLVMValueRef tmp1
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1089 LLVMValueRef tmp2
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1090 tmp2
= ac_build_umin(&ctx
->ac
, tmp2
, src
[2]);
1091 result
= ac_build_umax(&ctx
->ac
, tmp1
, tmp2
);
1096 fprintf(stderr
, "Unknown NIR alu instr: ");
1097 nir_print_instr(&instr
->instr
, stderr
);
1098 fprintf(stderr
, "\n");
1103 assert(instr
->dest
.dest
.is_ssa
);
1104 result
= ac_to_integer_or_pointer(&ctx
->ac
, result
);
1105 ctx
->ssa_defs
[instr
->dest
.dest
.ssa
.index
] = result
;
1109 static void visit_load_const(struct ac_nir_context
*ctx
,
1110 const nir_load_const_instr
*instr
)
1112 LLVMValueRef values
[4], value
= NULL
;
1113 LLVMTypeRef element_type
=
1114 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
1116 for (unsigned i
= 0; i
< instr
->def
.num_components
; ++i
) {
1117 switch (instr
->def
.bit_size
) {
1119 values
[i
] = LLVMConstInt(element_type
,
1120 instr
->value
[i
].u8
, false);
1123 values
[i
] = LLVMConstInt(element_type
,
1124 instr
->value
[i
].u16
, false);
1127 values
[i
] = LLVMConstInt(element_type
,
1128 instr
->value
[i
].u32
, false);
1131 values
[i
] = LLVMConstInt(element_type
,
1132 instr
->value
[i
].u64
, false);
1136 "unsupported nir load_const bit_size: %d\n",
1137 instr
->def
.bit_size
);
1141 if (instr
->def
.num_components
> 1) {
1142 value
= LLVMConstVector(values
, instr
->def
.num_components
);
1146 ctx
->ssa_defs
[instr
->def
.index
] = value
;
1150 get_buffer_size(struct ac_nir_context
*ctx
, LLVMValueRef descriptor
, bool in_elements
)
1153 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1154 LLVMConstInt(ctx
->ac
.i32
, 2, false), "");
1157 if (ctx
->ac
.chip_class
== GFX8
&& in_elements
) {
1158 /* On GFX8, the descriptor contains the size in bytes,
1159 * but TXQ must return the size in elements.
1160 * The stride is always non-zero for resources using TXQ.
1162 LLVMValueRef stride
=
1163 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1165 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
,
1166 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
1167 stride
= LLVMBuildAnd(ctx
->ac
.builder
, stride
,
1168 LLVMConstInt(ctx
->ac
.i32
, 0x3fff, false), "");
1170 size
= LLVMBuildUDiv(ctx
->ac
.builder
, size
, stride
, "");
1175 static LLVMValueRef
lower_gather4_integer(struct ac_llvm_context
*ctx
,
1177 struct ac_image_args
*args
,
1178 const nir_tex_instr
*instr
)
1180 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1181 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1182 LLVMValueRef half_texel
[2];
1183 LLVMValueRef compare_cube_wa
= NULL
;
1184 LLVMValueRef result
;
1188 struct ac_image_args txq_args
= { 0 };
1190 txq_args
.dim
= get_ac_sampler_dim(ctx
, instr
->sampler_dim
, instr
->is_array
);
1191 txq_args
.opcode
= ac_image_get_resinfo
;
1192 txq_args
.dmask
= 0xf;
1193 txq_args
.lod
= ctx
->i32_0
;
1194 txq_args
.resource
= args
->resource
;
1195 txq_args
.attributes
= AC_FUNC_ATTR_READNONE
;
1196 LLVMValueRef size
= ac_build_image_opcode(ctx
, &txq_args
);
1198 for (unsigned c
= 0; c
< 2; c
++) {
1199 half_texel
[c
] = LLVMBuildExtractElement(ctx
->builder
, size
,
1200 LLVMConstInt(ctx
->i32
, c
, false), "");
1201 half_texel
[c
] = LLVMBuildUIToFP(ctx
->builder
, half_texel
[c
], ctx
->f32
, "");
1202 half_texel
[c
] = ac_build_fdiv(ctx
, ctx
->f32_1
, half_texel
[c
]);
1203 half_texel
[c
] = LLVMBuildFMul(ctx
->builder
, half_texel
[c
],
1204 LLVMConstReal(ctx
->f32
, -0.5), "");
1208 LLVMValueRef orig_coords
[2] = { args
->coords
[0], args
->coords
[1] };
1210 for (unsigned c
= 0; c
< 2; c
++) {
1212 tmp
= LLVMBuildBitCast(ctx
->builder
, args
->coords
[c
], ctx
->f32
, "");
1213 args
->coords
[c
] = LLVMBuildFAdd(ctx
->builder
, tmp
, half_texel
[c
], "");
1217 * Apparantly cube has issue with integer types that the workaround doesn't solve,
1218 * so this tests if the format is 8_8_8_8 and an integer type do an alternate
1219 * workaround by sampling using a scaled type and converting.
1220 * This is taken from amdgpu-pro shaders.
1222 /* NOTE this produces some ugly code compared to amdgpu-pro,
1223 * LLVM ends up dumping SGPRs into VGPRs to deal with the compare/select,
1224 * and then reads them back. -pro generates two selects,
1225 * one s_cmp for the descriptor rewriting
1226 * one v_cmp for the coordinate and result changes.
1228 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1229 LLVMValueRef tmp
, tmp2
;
1231 /* workaround 8/8/8/8 uint/sint cube gather bug */
1232 /* first detect it then change to a scaled read and f2i */
1233 tmp
= LLVMBuildExtractElement(ctx
->builder
, args
->resource
, ctx
->i32_1
, "");
1236 /* extract the DATA_FORMAT */
1237 tmp
= ac_build_bfe(ctx
, tmp
, LLVMConstInt(ctx
->i32
, 20, false),
1238 LLVMConstInt(ctx
->i32
, 6, false), false);
1240 /* is the DATA_FORMAT == 8_8_8_8 */
1241 compare_cube_wa
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, tmp
, LLVMConstInt(ctx
->i32
, V_008F14_IMG_DATA_FORMAT_8_8_8_8
, false), "");
1243 if (stype
== GLSL_TYPE_UINT
)
1244 /* Create a NUM FORMAT - 0x2 or 0x4 - USCALED or UINT */
1245 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, LLVMConstInt(ctx
->i32
, 0x8000000, false),
1246 LLVMConstInt(ctx
->i32
, 0x10000000, false), "");
1248 /* Create a NUM FORMAT - 0x3 or 0x5 - SSCALED or SINT */
1249 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, LLVMConstInt(ctx
->i32
, 0xc000000, false),
1250 LLVMConstInt(ctx
->i32
, 0x14000000, false), "");
1252 /* replace the NUM FORMAT in the descriptor */
1253 tmp2
= LLVMBuildAnd(ctx
->builder
, tmp2
, LLVMConstInt(ctx
->i32
, C_008F14_NUM_FORMAT
, false), "");
1254 tmp2
= LLVMBuildOr(ctx
->builder
, tmp2
, tmp
, "");
1256 args
->resource
= LLVMBuildInsertElement(ctx
->builder
, args
->resource
, tmp2
, ctx
->i32_1
, "");
1258 /* don't modify the coordinates for this case */
1259 for (unsigned c
= 0; c
< 2; ++c
)
1260 args
->coords
[c
] = LLVMBuildSelect(
1261 ctx
->builder
, compare_cube_wa
,
1262 orig_coords
[c
], args
->coords
[c
], "");
1265 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1266 result
= ac_build_image_opcode(ctx
, args
);
1268 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1269 LLVMValueRef tmp
, tmp2
;
1271 /* if the cube workaround is in place, f2i the result. */
1272 for (unsigned c
= 0; c
< 4; c
++) {
1273 tmp
= LLVMBuildExtractElement(ctx
->builder
, result
, LLVMConstInt(ctx
->i32
, c
, false), "");
1274 if (stype
== GLSL_TYPE_UINT
)
1275 tmp2
= LLVMBuildFPToUI(ctx
->builder
, tmp
, ctx
->i32
, "");
1277 tmp2
= LLVMBuildFPToSI(ctx
->builder
, tmp
, ctx
->i32
, "");
1278 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->i32
, "");
1279 tmp2
= LLVMBuildBitCast(ctx
->builder
, tmp2
, ctx
->i32
, "");
1280 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, tmp2
, tmp
, "");
1281 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f32
, "");
1282 result
= LLVMBuildInsertElement(ctx
->builder
, result
, tmp
, LLVMConstInt(ctx
->i32
, c
, false), "");
1288 static nir_deref_instr
*get_tex_texture_deref(const nir_tex_instr
*instr
)
1290 nir_deref_instr
*texture_deref_instr
= NULL
;
1292 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
1293 switch (instr
->src
[i
].src_type
) {
1294 case nir_tex_src_texture_deref
:
1295 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
1301 return texture_deref_instr
;
1304 static LLVMValueRef
build_tex_intrinsic(struct ac_nir_context
*ctx
,
1305 const nir_tex_instr
*instr
,
1306 struct ac_image_args
*args
)
1308 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
1309 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
1311 if (ctx
->abi
->gfx9_stride_size_workaround
) {
1312 return ac_build_buffer_load_format_gfx9_safe(&ctx
->ac
,
1316 util_last_bit(mask
),
1319 return ac_build_buffer_load_format(&ctx
->ac
,
1323 util_last_bit(mask
),
1328 args
->opcode
= ac_image_sample
;
1330 switch (instr
->op
) {
1332 case nir_texop_txf_ms
:
1333 case nir_texop_samples_identical
:
1334 args
->opcode
= args
->level_zero
||
1335 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
?
1336 ac_image_load
: ac_image_load_mip
;
1337 args
->level_zero
= false;
1340 case nir_texop_query_levels
:
1341 args
->opcode
= ac_image_get_resinfo
;
1343 args
->lod
= ctx
->ac
.i32_0
;
1344 args
->level_zero
= false;
1347 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1349 args
->level_zero
= true;
1353 args
->opcode
= ac_image_gather4
;
1354 args
->level_zero
= true;
1357 args
->opcode
= ac_image_get_lod
;
1363 if (instr
->op
== nir_texop_tg4
&& ctx
->ac
.chip_class
<= GFX8
) {
1364 nir_deref_instr
*texture_deref_instr
= get_tex_texture_deref(instr
);
1365 nir_variable
*var
= nir_deref_instr_get_variable(texture_deref_instr
);
1366 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1367 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1368 if (stype
== GLSL_TYPE_UINT
|| stype
== GLSL_TYPE_INT
) {
1369 return lower_gather4_integer(&ctx
->ac
, var
, args
, instr
);
1373 /* Fixup for GFX9 which allocates 1D textures as 2D. */
1374 if (instr
->op
== nir_texop_lod
&& ctx
->ac
.chip_class
== GFX9
) {
1375 if ((args
->dim
== ac_image_2darray
||
1376 args
->dim
== ac_image_2d
) && !args
->coords
[1]) {
1377 args
->coords
[1] = ctx
->ac
.i32_0
;
1381 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1382 bool cs_derivs
= ctx
->stage
== MESA_SHADER_COMPUTE
&&
1383 ctx
->info
->cs
.derivative_group
!= DERIVATIVE_GROUP_NONE
;
1384 if (ctx
->stage
== MESA_SHADER_FRAGMENT
|| cs_derivs
) {
1385 /* Prevent texture instructions with implicit derivatives from being
1386 * sinked into branches. */
1387 switch (instr
->op
) {
1391 args
->attributes
|= AC_FUNC_ATTR_CONVERGENT
;
1398 return ac_build_image_opcode(&ctx
->ac
, args
);
1401 static LLVMValueRef
visit_vulkan_resource_reindex(struct ac_nir_context
*ctx
,
1402 nir_intrinsic_instr
*instr
)
1404 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
1405 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
1407 LLVMValueRef result
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
1408 LLVMSetMetadata(result
, ctx
->ac
.uniform_md_kind
, ctx
->ac
.empty_md
);
1412 static LLVMValueRef
visit_load_push_constant(struct ac_nir_context
*ctx
,
1413 nir_intrinsic_instr
*instr
)
1415 LLVMValueRef ptr
, addr
;
1416 LLVMValueRef src0
= get_src(ctx
, instr
->src
[0]);
1417 unsigned index
= nir_intrinsic_base(instr
);
1419 addr
= LLVMConstInt(ctx
->ac
.i32
, index
, 0);
1420 addr
= LLVMBuildAdd(ctx
->ac
.builder
, addr
, src0
, "");
1422 /* Load constant values from user SGPRS when possible, otherwise
1423 * fallback to the default path that loads directly from memory.
1425 if (LLVMIsConstant(src0
) &&
1426 instr
->dest
.ssa
.bit_size
== 32) {
1427 unsigned count
= instr
->dest
.ssa
.num_components
;
1428 unsigned offset
= index
;
1430 offset
+= LLVMConstIntGetZExtValue(src0
);
1433 offset
-= ctx
->abi
->base_inline_push_consts
;
1435 if (offset
+ count
<= ctx
->abi
->num_inline_push_consts
) {
1436 return ac_build_gather_values(&ctx
->ac
,
1437 ctx
->abi
->inline_push_consts
+ offset
,
1442 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ctx
->abi
->push_constants
, &addr
, 1, "");
1444 if (instr
->dest
.ssa
.bit_size
== 8) {
1445 unsigned load_dwords
= instr
->dest
.ssa
.num_components
> 1 ? 2 : 1;
1446 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), 4 * load_dwords
);
1447 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1448 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1450 LLVMValueRef params
[3];
1451 if (load_dwords
> 1) {
1452 LLVMValueRef res_vec
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(ctx
->ac
.i32
, 2), "");
1453 params
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
1454 params
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 0, false), "");
1456 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, ctx
->ac
.i32
, "");
1457 params
[0] = ctx
->ac
.i32_0
;
1461 res
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.alignbyte", ctx
->ac
.i32
, params
, 3, 0);
1463 res
= LLVMBuildTrunc(ctx
->ac
.builder
, res
, LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.num_components
* 8), "");
1464 if (instr
->dest
.ssa
.num_components
> 1)
1465 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), instr
->dest
.ssa
.num_components
), "");
1467 } else if (instr
->dest
.ssa
.bit_size
== 16) {
1468 unsigned load_dwords
= instr
->dest
.ssa
.num_components
/ 2 + 1;
1469 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt16TypeInContext(ctx
->ac
.context
), 2 * load_dwords
);
1470 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1471 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1472 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, vec_type
, "");
1473 LLVMValueRef cond
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, ctx
->ac
.i32_1
, "");
1474 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->ac
.i1
, "");
1475 LLVMValueRef mask
[] = { LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
1476 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
1477 LLVMConstInt(ctx
->ac
.i32
, 4, false)};
1478 LLVMValueRef swizzle_aligned
= LLVMConstVector(&mask
[0], instr
->dest
.ssa
.num_components
);
1479 LLVMValueRef swizzle_unaligned
= LLVMConstVector(&mask
[1], instr
->dest
.ssa
.num_components
);
1480 LLVMValueRef shuffle_aligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_aligned
, "");
1481 LLVMValueRef shuffle_unaligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_unaligned
, "");
1482 res
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, shuffle_unaligned
, shuffle_aligned
, "");
1483 return LLVMBuildBitCast(ctx
->ac
.builder
, res
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1486 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, get_def_type(ctx
, &instr
->dest
.ssa
));
1488 return LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1491 static LLVMValueRef
visit_get_buffer_size(struct ac_nir_context
*ctx
,
1492 const nir_intrinsic_instr
*instr
)
1494 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
1496 return get_buffer_size(ctx
, ctx
->abi
->load_ssbo(ctx
->abi
, index
, false), false);
1499 static uint32_t widen_mask(uint32_t mask
, unsigned multiplier
)
1501 uint32_t new_mask
= 0;
1502 for(unsigned i
= 0; i
< 32 && (1u << i
) <= mask
; ++i
)
1503 if (mask
& (1u << i
))
1504 new_mask
|= ((1u << multiplier
) - 1u) << (i
* multiplier
);
1508 static LLVMValueRef
extract_vector_range(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
1509 unsigned start
, unsigned count
)
1511 LLVMValueRef mask
[] = {
1512 ctx
->i32_0
, ctx
->i32_1
,
1513 LLVMConstInt(ctx
->i32
, 2, false), LLVMConstInt(ctx
->i32
, 3, false) };
1515 unsigned src_elements
= ac_get_llvm_num_components(src
);
1517 if (count
== src_elements
) {
1520 } else if (count
== 1) {
1521 assert(start
< src_elements
);
1522 return LLVMBuildExtractElement(ctx
->builder
, src
, mask
[start
], "");
1524 assert(start
+ count
<= src_elements
);
1526 LLVMValueRef swizzle
= LLVMConstVector(&mask
[start
], count
);
1527 return LLVMBuildShuffleVector(ctx
->builder
, src
, src
, swizzle
, "");
1531 static unsigned get_cache_policy(struct ac_nir_context
*ctx
,
1532 enum gl_access_qualifier access
,
1533 bool may_store_unaligned
,
1534 bool writeonly_memory
)
1536 unsigned cache_policy
= 0;
1538 /* GFX6 has a TC L1 bug causing corruption of 8bit/16bit stores. All
1539 * store opcodes not aligned to a dword are affected. The only way to
1540 * get unaligned stores is through shader images.
1542 if (((may_store_unaligned
&& ctx
->ac
.chip_class
== GFX6
) ||
1543 /* If this is write-only, don't keep data in L1 to prevent
1544 * evicting L1 cache lines that may be needed by other
1548 access
& (ACCESS_COHERENT
| ACCESS_VOLATILE
))) {
1549 cache_policy
|= ac_glc
;
1552 return cache_policy
;
1555 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1556 nir_intrinsic_instr
*instr
)
1558 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1559 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1560 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1561 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1562 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
1563 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, writeonly_memory
);
1565 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1566 get_src(ctx
, instr
->src
[1]), true);
1567 LLVMValueRef base_data
= src_data
;
1568 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1569 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1573 LLVMValueRef data
, offset
;
1574 LLVMTypeRef data_type
;
1576 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1578 /* Due to an LLVM limitation with LLVM < 9, split 3-element
1579 * writes into a 2-element and a 1-element write. */
1581 (elem_size_bytes
!= 4 || !ac_has_vec3_support(ctx
->ac
.chip_class
, false))) {
1582 writemask
|= 1 << (start
+ 2);
1585 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1587 /* we can only store 4 DWords at the same time.
1588 * can only happen for 64 Bit vectors. */
1589 if (num_bytes
> 16) {
1590 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1595 /* check alignment of 16 Bit stores */
1596 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1597 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1601 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1603 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1604 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1606 if (num_bytes
== 1) {
1607 ac_build_tbuffer_store_byte(&ctx
->ac
, rsrc
, data
,
1608 offset
, ctx
->ac
.i32_0
,
1610 } else if (num_bytes
== 2) {
1611 ac_build_tbuffer_store_short(&ctx
->ac
, rsrc
, data
,
1612 offset
, ctx
->ac
.i32_0
,
1615 int num_channels
= num_bytes
/ 4;
1617 switch (num_bytes
) {
1618 case 16: /* v4f32 */
1619 data_type
= ctx
->ac
.v4f32
;
1621 case 12: /* v3f32 */
1622 data_type
= ctx
->ac
.v3f32
;
1625 data_type
= ctx
->ac
.v2f32
;
1628 data_type
= ctx
->ac
.f32
;
1631 unreachable("Malformed vector store.");
1633 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1635 ac_build_buffer_store_dword(&ctx
->ac
, rsrc
, data
,
1636 num_channels
, offset
,
1638 cache_policy
, false);
1643 static LLVMValueRef
emit_ssbo_comp_swap_64(struct ac_nir_context
*ctx
,
1644 LLVMValueRef descriptor
,
1645 LLVMValueRef offset
,
1646 LLVMValueRef compare
,
1647 LLVMValueRef exchange
)
1649 LLVMBasicBlockRef start_block
= NULL
, then_block
= NULL
;
1650 if (ctx
->abi
->robust_buffer_access
) {
1651 LLVMValueRef size
= ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 2);
1653 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
, offset
, size
, "");
1654 start_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1656 ac_build_ifcc(&ctx
->ac
, cond
, -1);
1658 then_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1661 LLVMValueRef ptr_parts
[2] = {
1662 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 0),
1663 LLVMBuildAnd(ctx
->ac
.builder
,
1664 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 1),
1665 LLVMConstInt(ctx
->ac
.i32
, 65535, 0), "")
1668 ptr_parts
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i16
, "");
1669 ptr_parts
[1] = LLVMBuildSExt(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i32
, "");
1671 offset
= LLVMBuildZExt(ctx
->ac
.builder
, offset
, ctx
->ac
.i64
, "");
1673 LLVMValueRef ptr
= ac_build_gather_values(&ctx
->ac
, ptr_parts
, 2);
1674 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ctx
->ac
.i64
, "");
1675 ptr
= LLVMBuildAdd(ctx
->ac
.builder
, ptr
, offset
, "");
1676 ptr
= LLVMBuildIntToPtr(ctx
->ac
.builder
, ptr
, LLVMPointerType(ctx
->ac
.i64
, AC_ADDR_SPACE_GLOBAL
), "");
1678 LLVMValueRef result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, compare
, exchange
, "singlethread-one-as");
1679 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
1681 if (ctx
->abi
->robust_buffer_access
) {
1682 ac_build_endif(&ctx
->ac
, -1);
1684 LLVMBasicBlockRef incoming_blocks
[2] = {
1689 LLVMValueRef incoming_values
[2] = {
1690 LLVMConstInt(ctx
->ac
.i64
, 0, 0),
1693 LLVMValueRef ret
= LLVMBuildPhi(ctx
->ac
.builder
, ctx
->ac
.i64
, "");
1694 LLVMAddIncoming(ret
, incoming_values
, incoming_blocks
, 2);
1701 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1702 const nir_intrinsic_instr
*instr
)
1704 LLVMTypeRef return_type
= LLVMTypeOf(get_src(ctx
, instr
->src
[2]));
1706 char name
[64], type
[8];
1707 LLVMValueRef params
[6], descriptor
;
1710 switch (instr
->intrinsic
) {
1711 case nir_intrinsic_ssbo_atomic_add
:
1714 case nir_intrinsic_ssbo_atomic_imin
:
1717 case nir_intrinsic_ssbo_atomic_umin
:
1720 case nir_intrinsic_ssbo_atomic_imax
:
1723 case nir_intrinsic_ssbo_atomic_umax
:
1726 case nir_intrinsic_ssbo_atomic_and
:
1729 case nir_intrinsic_ssbo_atomic_or
:
1732 case nir_intrinsic_ssbo_atomic_xor
:
1735 case nir_intrinsic_ssbo_atomic_exchange
:
1738 case nir_intrinsic_ssbo_atomic_comp_swap
:
1745 descriptor
= ctx
->abi
->load_ssbo(ctx
->abi
,
1746 get_src(ctx
, instr
->src
[0]),
1749 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
&&
1750 return_type
== ctx
->ac
.i64
) {
1751 return emit_ssbo_comp_swap_64(ctx
, descriptor
,
1752 get_src(ctx
, instr
->src
[1]),
1753 get_src(ctx
, instr
->src
[2]),
1754 get_src(ctx
, instr
->src
[3]));
1756 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1757 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1759 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1760 params
[arg_count
++] = descriptor
;
1762 if (HAVE_LLVM
>= 0x900) {
1763 /* XXX: The new raw/struct atomic intrinsics are buggy with
1764 * LLVM 8, see r358579.
1766 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1767 params
[arg_count
++] = ctx
->ac
.i32_0
; /* soffset */
1768 params
[arg_count
++] = ctx
->ac
.i32_0
; /* slc */
1770 ac_build_type_name_for_intr(return_type
, type
, sizeof(type
));
1771 snprintf(name
, sizeof(name
),
1772 "llvm.amdgcn.raw.buffer.atomic.%s.%s", op
, type
);
1774 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1775 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1776 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1778 assert(return_type
== ctx
->ac
.i32
);
1779 snprintf(name
, sizeof(name
),
1780 "llvm.amdgcn.buffer.atomic.%s", op
);
1783 return ac_build_intrinsic(&ctx
->ac
, name
, return_type
, params
,
1787 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
1788 const nir_intrinsic_instr
*instr
)
1790 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1791 int num_components
= instr
->num_components
;
1792 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1793 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, false);
1795 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1796 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1797 get_src(ctx
, instr
->src
[0]), false);
1798 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
1800 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1801 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
1803 LLVMValueRef results
[4];
1804 for (int i
= 0; i
< num_components
;) {
1805 int num_elems
= num_components
- i
;
1806 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
1808 if (num_elems
* elem_size_bytes
> 16)
1809 num_elems
= 16 / elem_size_bytes
;
1810 int load_bytes
= num_elems
* elem_size_bytes
;
1812 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
1816 if (load_bytes
== 1) {
1817 ret
= ac_build_tbuffer_load_byte(&ctx
->ac
,
1823 } else if (load_bytes
== 2) {
1824 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
1831 int num_channels
= util_next_power_of_two(load_bytes
) / 4;
1832 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
1834 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_channels
,
1835 vindex
, offset
, immoffset
, 0,
1836 cache_policy
, can_speculate
, false);
1839 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
1840 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
1841 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
1843 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
1844 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
1846 for (unsigned j
= 0; j
< num_elems
; j
++) {
1847 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
1852 return ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1855 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
1856 const nir_intrinsic_instr
*instr
)
1859 LLVMValueRef rsrc
= get_src(ctx
, instr
->src
[0]);
1860 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1861 int num_components
= instr
->num_components
;
1863 if (ctx
->abi
->load_ubo
)
1864 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
1866 if (instr
->dest
.ssa
.bit_size
== 64)
1867 num_components
*= 2;
1869 if (instr
->dest
.ssa
.bit_size
== 16 || instr
->dest
.ssa
.bit_size
== 8) {
1870 unsigned load_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1871 LLVMValueRef results
[num_components
];
1872 for (unsigned i
= 0; i
< num_components
; ++i
) {
1873 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
,
1876 if (load_bytes
== 1) {
1877 results
[i
] = ac_build_tbuffer_load_byte(&ctx
->ac
,
1884 assert(load_bytes
== 2);
1885 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
1893 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1895 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
1896 NULL
, 0, 0, true, true);
1898 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
1901 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
1902 get_def_type(ctx
, &instr
->dest
.ssa
), "");
1906 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
1907 bool vs_in
, unsigned *vertex_index_out
,
1908 LLVMValueRef
*vertex_index_ref
,
1909 unsigned *const_out
, LLVMValueRef
*indir_out
)
1911 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
1912 nir_deref_path path
;
1913 unsigned idx_lvl
= 1;
1915 nir_deref_path_init(&path
, instr
, NULL
);
1917 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
1918 if (vertex_index_ref
) {
1919 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
1920 if (vertex_index_out
)
1921 *vertex_index_out
= 0;
1923 *vertex_index_out
= nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
1928 uint32_t const_offset
= 0;
1929 LLVMValueRef offset
= NULL
;
1931 if (var
->data
.compact
) {
1932 assert(instr
->deref_type
== nir_deref_type_array
);
1933 const_offset
= nir_src_as_uint(instr
->arr
.index
);
1937 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
1938 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
1939 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
1940 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
1942 for (unsigned i
= 0; i
< index
; i
++) {
1943 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
1944 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
1946 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
1947 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
1948 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
1949 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
1951 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
1955 unreachable("Uhandled deref type in get_deref_instr_offset");
1959 nir_deref_path_finish(&path
);
1961 if (const_offset
&& offset
)
1962 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
1963 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
1966 *const_out
= const_offset
;
1967 *indir_out
= offset
;
1970 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
1971 nir_intrinsic_instr
*instr
,
1974 LLVMValueRef result
;
1975 LLVMValueRef vertex_index
= NULL
;
1976 LLVMValueRef indir_index
= NULL
;
1977 unsigned const_index
= 0;
1979 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
1981 unsigned location
= var
->data
.location
;
1982 unsigned driver_location
= var
->data
.driver_location
;
1983 const bool is_patch
= var
->data
.patch
;
1984 const bool is_compact
= var
->data
.compact
;
1986 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
1987 false, NULL
, is_patch
? NULL
: &vertex_index
,
1988 &const_index
, &indir_index
);
1990 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1992 LLVMTypeRef src_component_type
;
1993 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
1994 src_component_type
= LLVMGetElementType(dest_type
);
1996 src_component_type
= dest_type
;
1998 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
1999 vertex_index
, indir_index
,
2000 const_index
, location
, driver_location
,
2001 var
->data
.location_frac
,
2002 instr
->num_components
,
2003 is_patch
, is_compact
, load_inputs
);
2004 if (instr
->dest
.ssa
.bit_size
== 16) {
2005 result
= ac_to_integer(&ctx
->ac
, result
);
2006 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
2008 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
2012 type_scalar_size_bytes(const struct glsl_type
*type
)
2014 assert(glsl_type_is_vector_or_scalar(type
) ||
2015 glsl_type_is_matrix(type
));
2016 return glsl_type_is_boolean(type
) ? 4 : glsl_get_bit_size(type
) / 8;
2019 static LLVMValueRef
visit_load_var(struct ac_nir_context
*ctx
,
2020 nir_intrinsic_instr
*instr
)
2022 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2023 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2025 LLVMValueRef values
[8];
2027 int ve
= instr
->dest
.ssa
.num_components
;
2029 LLVMValueRef indir_index
;
2031 unsigned const_index
;
2032 unsigned stride
= 4;
2033 int mode
= deref
->mode
;
2036 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
2037 var
->data
.mode
== nir_var_shader_in
;
2038 idx
= var
->data
.driver_location
;
2039 comp
= var
->data
.location_frac
;
2040 mode
= var
->data
.mode
;
2042 get_deref_offset(ctx
, deref
, vs_in
, NULL
, NULL
,
2043 &const_index
, &indir_index
);
2045 if (var
->data
.compact
) {
2047 const_index
+= comp
;
2052 if (instr
->dest
.ssa
.bit_size
== 64 &&
2053 (deref
->mode
== nir_var_shader_in
||
2054 deref
->mode
== nir_var_shader_out
||
2055 deref
->mode
== nir_var_function_temp
))
2059 case nir_var_shader_in
:
2060 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
2061 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
2062 return load_tess_varyings(ctx
, instr
, true);
2065 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
2066 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
2067 LLVMValueRef indir_index
;
2068 unsigned const_index
, vertex_index
;
2069 get_deref_offset(ctx
, deref
, false, &vertex_index
, NULL
,
2070 &const_index
, &indir_index
);
2072 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
2073 var
->data
.driver_location
,
2074 var
->data
.location_frac
,
2075 instr
->num_components
, vertex_index
, const_index
, type
);
2078 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2080 unsigned count
= glsl_count_attribute_slots(
2082 ctx
->stage
== MESA_SHADER_VERTEX
);
2084 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2085 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
2086 stride
, false, true);
2088 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2092 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
2095 case nir_var_function_temp
:
2096 for (unsigned chan
= 0; chan
< ve
; chan
++) {
2098 unsigned count
= glsl_count_attribute_slots(
2101 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2102 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2103 stride
, true, true);
2105 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2109 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
2113 case nir_var_mem_shared
: {
2114 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2115 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2116 return LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2117 get_def_type(ctx
, &instr
->dest
.ssa
),
2120 case nir_var_shader_out
:
2121 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2122 return load_tess_varyings(ctx
, instr
, false);
2125 if (ctx
->stage
== MESA_SHADER_FRAGMENT
&&
2126 var
->data
.fb_fetch_output
&&
2127 ctx
->abi
->emit_fbfetch
)
2128 return ctx
->abi
->emit_fbfetch(ctx
->abi
);
2130 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2132 unsigned count
= glsl_count_attribute_slots(
2135 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2136 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2137 stride
, true, true);
2139 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2143 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
2144 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
2149 case nir_var_mem_global
: {
2150 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2151 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2152 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2153 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2155 LLVMTypeRef result_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2156 if (stride
!= natural_stride
) {
2157 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(result_type
),
2158 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2159 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2161 for (unsigned i
= 0; i
< instr
->dest
.ssa
.num_components
; ++i
) {
2162 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, i
* stride
/ natural_stride
, 0);
2163 values
[i
] = LLVMBuildLoad(ctx
->ac
.builder
,
2164 ac_build_gep_ptr(&ctx
->ac
, address
, offset
), "");
2166 return ac_build_gather_values(&ctx
->ac
, values
, instr
->dest
.ssa
.num_components
);
2168 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2169 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2170 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2171 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2176 unreachable("unhandle variable mode");
2178 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
2179 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2183 visit_store_var(struct ac_nir_context
*ctx
,
2184 nir_intrinsic_instr
*instr
)
2186 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2187 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2189 LLVMValueRef temp_ptr
, value
;
2192 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
2193 int writemask
= instr
->const_index
[0];
2194 LLVMValueRef indir_index
;
2195 unsigned const_index
;
2198 get_deref_offset(ctx
, deref
, false,
2199 NULL
, NULL
, &const_index
, &indir_index
);
2200 idx
= var
->data
.driver_location
;
2201 comp
= var
->data
.location_frac
;
2203 if (var
->data
.compact
) {
2204 const_index
+= comp
;
2209 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64 &&
2210 (deref
->mode
== nir_var_shader_out
||
2211 deref
->mode
== nir_var_function_temp
)) {
2213 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2214 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2217 writemask
= widen_mask(writemask
, 2);
2220 writemask
= writemask
<< comp
;
2222 switch (deref
->mode
) {
2223 case nir_var_shader_out
:
2225 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2226 LLVMValueRef vertex_index
= NULL
;
2227 LLVMValueRef indir_index
= NULL
;
2228 unsigned const_index
= 0;
2229 const bool is_patch
= var
->data
.patch
;
2231 get_deref_offset(ctx
, deref
, false, NULL
,
2232 is_patch
? NULL
: &vertex_index
,
2233 &const_index
, &indir_index
);
2235 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2236 vertex_index
, indir_index
,
2237 const_index
, src
, writemask
);
2241 for (unsigned chan
= 0; chan
< 8; chan
++) {
2243 if (!(writemask
& (1 << chan
)))
2246 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2248 if (var
->data
.compact
)
2251 unsigned count
= glsl_count_attribute_slots(
2254 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2255 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2256 stride
, true, true);
2258 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2259 value
, indir_index
, "");
2260 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2261 count
, stride
, tmp_vec
);
2264 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2266 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2270 case nir_var_function_temp
:
2271 for (unsigned chan
= 0; chan
< 8; chan
++) {
2272 if (!(writemask
& (1 << chan
)))
2275 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2277 unsigned count
= glsl_count_attribute_slots(
2280 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2281 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2284 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2285 value
, indir_index
, "");
2286 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2289 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2291 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2296 case nir_var_mem_global
:
2297 case nir_var_mem_shared
: {
2298 int writemask
= instr
->const_index
[0];
2299 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2300 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2302 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2303 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2304 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2306 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2307 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2308 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2310 if (writemask
== (1u << ac_get_llvm_num_components(val
)) - 1 &&
2311 stride
== natural_stride
) {
2312 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2313 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2314 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2316 val
= LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2317 LLVMGetElementType(LLVMTypeOf(address
)), "");
2318 LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2320 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(LLVMTypeOf(val
)),
2321 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2322 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2323 for (unsigned chan
= 0; chan
< 4; chan
++) {
2324 if (!(writemask
& (1 << chan
)))
2327 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, chan
* stride
/ natural_stride
, 0);
2329 LLVMValueRef ptr
= ac_build_gep_ptr(&ctx
->ac
, address
, offset
);
2330 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2332 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2333 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2334 LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2345 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2348 case GLSL_SAMPLER_DIM_BUF
:
2350 case GLSL_SAMPLER_DIM_1D
:
2351 return array
? 2 : 1;
2352 case GLSL_SAMPLER_DIM_2D
:
2353 return array
? 3 : 2;
2354 case GLSL_SAMPLER_DIM_MS
:
2355 return array
? 4 : 3;
2356 case GLSL_SAMPLER_DIM_3D
:
2357 case GLSL_SAMPLER_DIM_CUBE
:
2359 case GLSL_SAMPLER_DIM_RECT
:
2360 case GLSL_SAMPLER_DIM_SUBPASS
:
2362 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2370 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2371 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2372 LLVMValueRef coord_z
,
2373 LLVMValueRef sample_index
,
2374 LLVMValueRef fmask_desc_ptr
)
2376 unsigned sample_chan
= coord_z
? 3 : 2;
2377 LLVMValueRef addr
[4] = {coord_x
, coord_y
, coord_z
};
2378 addr
[sample_chan
] = sample_index
;
2380 ac_apply_fmask_to_sample(ctx
, fmask_desc_ptr
, addr
, coord_z
!= NULL
);
2381 return addr
[sample_chan
];
2384 static nir_deref_instr
*get_image_deref(const nir_intrinsic_instr
*instr
)
2386 assert(instr
->src
[0].is_ssa
);
2387 return nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2390 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2391 const nir_intrinsic_instr
*instr
,
2392 enum ac_descriptor_type desc_type
,
2395 nir_deref_instr
*deref_instr
=
2396 instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
?
2397 nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
) : NULL
;
2399 return get_sampler_desc(ctx
, deref_instr
, desc_type
, &instr
->instr
, true, write
);
2402 static void get_image_coords(struct ac_nir_context
*ctx
,
2403 const nir_intrinsic_instr
*instr
,
2404 struct ac_image_args
*args
,
2405 enum glsl_sampler_dim dim
,
2408 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2409 LLVMValueRef masks
[] = {
2410 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2411 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2413 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2416 ASSERTED
bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2417 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2418 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2419 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2420 bool gfx9_1d
= ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2421 assert(!add_frag_pos
&& "Input attachments should be lowered by this point.");
2422 count
= image_type_to_components_count(dim
, is_array
);
2424 if (is_ms
&& (instr
->intrinsic
== nir_intrinsic_image_deref_load
||
2425 instr
->intrinsic
== nir_intrinsic_bindless_image_load
)) {
2426 LLVMValueRef fmask_load_address
[3];
2428 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2429 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2431 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2433 fmask_load_address
[2] = NULL
;
2435 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2436 fmask_load_address
[0],
2437 fmask_load_address
[1],
2438 fmask_load_address
[2],
2440 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2441 AC_DESC_FMASK
, &instr
->instr
, false, false));
2443 if (count
== 1 && !gfx9_1d
) {
2444 if (instr
->src
[1].ssa
->num_components
)
2445 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2447 args
->coords
[0] = src0
;
2452 for (chan
= 0; chan
< count
; ++chan
) {
2453 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2458 args
->coords
[2] = args
->coords
[1];
2459 args
->coords
[1] = ctx
->ac
.i32_0
;
2461 args
->coords
[1] = ctx
->ac
.i32_0
;
2466 args
->coords
[count
] = sample_index
;
2472 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2473 const nir_intrinsic_instr
*instr
,
2474 bool write
, bool atomic
)
2476 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, write
);
2477 if (ctx
->abi
->gfx9_stride_size_workaround
||
2478 (ctx
->abi
->gfx9_stride_size_workaround_for_atomic
&& atomic
)) {
2479 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2480 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2481 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2483 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2484 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2485 elem_count
, stride
, "");
2487 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2488 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2493 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2494 const nir_intrinsic_instr
*instr
,
2499 enum glsl_sampler_dim dim
;
2500 enum gl_access_qualifier access
;
2503 dim
= nir_intrinsic_image_dim(instr
);
2504 access
= nir_intrinsic_access(instr
);
2505 is_array
= nir_intrinsic_image_array(instr
);
2507 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2508 const struct glsl_type
*type
= image_deref
->type
;
2509 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2510 dim
= glsl_get_sampler_dim(type
);
2511 access
= var
->data
.image
.access
;
2512 is_array
= glsl_sampler_type_is_array(type
);
2515 struct ac_image_args args
= {};
2517 args
.cache_policy
= get_cache_policy(ctx
, access
, false, false);
2519 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2520 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2521 unsigned num_channels
= util_last_bit(mask
);
2522 LLVMValueRef rsrc
, vindex
;
2524 rsrc
= get_image_buffer_descriptor(ctx
, instr
, false, false);
2525 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2528 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2529 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2530 ctx
->ac
.i32_0
, num_channels
,
2533 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2535 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2536 res
= ac_to_integer(&ctx
->ac
, res
);
2538 args
.opcode
= ac_image_load
;
2539 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2540 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2541 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2543 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2545 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2550 static void visit_image_store(struct ac_nir_context
*ctx
,
2551 nir_intrinsic_instr
*instr
,
2556 enum glsl_sampler_dim dim
;
2557 enum gl_access_qualifier access
;
2560 dim
= nir_intrinsic_image_dim(instr
);
2561 access
= nir_intrinsic_access(instr
);
2562 is_array
= nir_intrinsic_image_array(instr
);
2564 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2565 const struct glsl_type
*type
= image_deref
->type
;
2566 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2567 dim
= glsl_get_sampler_dim(type
);
2568 access
= var
->data
.image
.access
;
2569 is_array
= glsl_sampler_type_is_array(type
);
2572 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
2573 struct ac_image_args args
= {};
2575 args
.cache_policy
= get_cache_policy(ctx
, access
, true, writeonly_memory
);
2577 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2578 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, true, false);
2579 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2580 unsigned src_channels
= ac_get_llvm_num_components(src
);
2581 LLVMValueRef vindex
;
2583 if (src_channels
== 3)
2584 src
= ac_build_expand_to_vec4(&ctx
->ac
, src
, 3);
2586 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2587 get_src(ctx
, instr
->src
[1]),
2590 ac_build_buffer_store_format(&ctx
->ac
, rsrc
, src
, vindex
,
2591 ctx
->ac
.i32_0
, src_channels
,
2594 args
.opcode
= ac_image_store
;
2595 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2596 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2597 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2598 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2601 ac_build_image_opcode(&ctx
->ac
, &args
);
2606 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2607 const nir_intrinsic_instr
*instr
,
2610 LLVMValueRef params
[7];
2611 int param_count
= 0;
2613 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
||
2614 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_comp_swap
;
2615 const char *atomic_name
;
2616 char intrinsic_name
[64];
2617 enum ac_atomic_op atomic_subop
;
2618 ASSERTED
int length
;
2620 enum glsl_sampler_dim dim
;
2621 bool is_unsigned
= false;
2624 if (instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_min
||
2625 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_max
) {
2626 const GLenum format
= nir_intrinsic_format(instr
);
2627 assert(format
== GL_R32UI
|| format
== GL_R32I
);
2628 is_unsigned
= format
== GL_R32UI
;
2630 dim
= nir_intrinsic_image_dim(instr
);
2631 is_array
= nir_intrinsic_image_array(instr
);
2633 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2634 is_unsigned
= glsl_get_sampler_result_type(type
) == GLSL_TYPE_UINT
;
2635 dim
= glsl_get_sampler_dim(type
);
2636 is_array
= glsl_sampler_type_is_array(type
);
2639 switch (instr
->intrinsic
) {
2640 case nir_intrinsic_bindless_image_atomic_add
:
2641 case nir_intrinsic_image_deref_atomic_add
:
2642 atomic_name
= "add";
2643 atomic_subop
= ac_atomic_add
;
2645 case nir_intrinsic_bindless_image_atomic_min
:
2646 case nir_intrinsic_image_deref_atomic_min
:
2647 atomic_name
= is_unsigned
? "umin" : "smin";
2648 atomic_subop
= is_unsigned
? ac_atomic_umin
: ac_atomic_smin
;
2650 case nir_intrinsic_bindless_image_atomic_max
:
2651 case nir_intrinsic_image_deref_atomic_max
:
2652 atomic_name
= is_unsigned
? "umax" : "smax";
2653 atomic_subop
= is_unsigned
? ac_atomic_umax
: ac_atomic_smax
;
2655 case nir_intrinsic_bindless_image_atomic_and
:
2656 case nir_intrinsic_image_deref_atomic_and
:
2657 atomic_name
= "and";
2658 atomic_subop
= ac_atomic_and
;
2660 case nir_intrinsic_bindless_image_atomic_or
:
2661 case nir_intrinsic_image_deref_atomic_or
:
2663 atomic_subop
= ac_atomic_or
;
2665 case nir_intrinsic_bindless_image_atomic_xor
:
2666 case nir_intrinsic_image_deref_atomic_xor
:
2667 atomic_name
= "xor";
2668 atomic_subop
= ac_atomic_xor
;
2670 case nir_intrinsic_bindless_image_atomic_exchange
:
2671 case nir_intrinsic_image_deref_atomic_exchange
:
2672 atomic_name
= "swap";
2673 atomic_subop
= ac_atomic_swap
;
2675 case nir_intrinsic_bindless_image_atomic_comp_swap
:
2676 case nir_intrinsic_image_deref_atomic_comp_swap
:
2677 atomic_name
= "cmpswap";
2678 atomic_subop
= 0; /* not used */
2680 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
2681 case nir_intrinsic_image_deref_atomic_inc_wrap
: {
2682 atomic_name
= "inc";
2683 atomic_subop
= ac_atomic_inc_wrap
;
2684 /* ATOMIC_INC instruction does:
2685 * value = (value + 1) % (data + 1)
2687 * value = (value + 1) % data
2688 * So replace 'data' by 'data - 1'.
2690 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
] =
2691 LLVMBuildSub(ctx
->ac
.builder
,
2692 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
],
2696 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
2697 case nir_intrinsic_image_deref_atomic_dec_wrap
:
2698 atomic_name
= "dec";
2699 atomic_subop
= ac_atomic_dec_wrap
;
2706 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
2707 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
2709 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2710 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, true, true);
2711 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2712 ctx
->ac
.i32_0
, ""); /* vindex */
2713 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
2714 if (HAVE_LLVM
>= 0x900) {
2715 /* XXX: The new raw/struct atomic intrinsics are buggy
2716 * with LLVM 8, see r358579.
2718 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
2719 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
2721 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2722 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
2724 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
2726 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2727 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
2730 assert(length
< sizeof(intrinsic_name
));
2731 return ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
2732 params
, param_count
, 0);
2734 struct ac_image_args args
= {};
2735 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
2736 args
.atomic
= atomic_subop
;
2737 args
.data
[0] = params
[0];
2739 args
.data
[1] = params
[1];
2740 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2741 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2742 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2744 return ac_build_image_opcode(&ctx
->ac
, &args
);
2748 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
2749 const nir_intrinsic_instr
*instr
,
2752 enum glsl_sampler_dim dim
;
2755 dim
= nir_intrinsic_image_dim(instr
);
2756 is_array
= nir_intrinsic_image_array(instr
);
2758 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2759 dim
= glsl_get_sampler_dim(type
);
2760 is_array
= glsl_sampler_type_is_array(type
);
2763 struct ac_image_args args
= { 0 };
2764 args
.dim
= get_ac_sampler_dim(&ctx
->ac
, dim
, is_array
);
2766 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2767 args
.opcode
= ac_image_get_resinfo
;
2768 args
.lod
= ctx
->ac
.i32_0
;
2769 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2771 return ac_build_image_opcode(&ctx
->ac
, &args
);
2774 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
2775 const nir_intrinsic_instr
*instr
,
2780 enum glsl_sampler_dim dim
;
2783 dim
= nir_intrinsic_image_dim(instr
);
2784 is_array
= nir_intrinsic_image_array(instr
);
2786 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2787 dim
= glsl_get_sampler_dim(type
);
2788 is_array
= glsl_sampler_type_is_array(type
);
2791 if (dim
== GLSL_SAMPLER_DIM_BUF
)
2792 return get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, false), true);
2794 struct ac_image_args args
= { 0 };
2796 args
.dim
= get_ac_image_dim(&ctx
->ac
, dim
, is_array
);
2798 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2799 args
.opcode
= ac_image_get_resinfo
;
2800 args
.lod
= ctx
->ac
.i32_0
;
2801 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2803 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2805 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
2807 if (dim
== GLSL_SAMPLER_DIM_CUBE
&& is_array
) {
2808 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
2809 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2810 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
2811 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
2813 if (ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
&& is_array
) {
2814 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2815 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
2822 static void emit_membar(struct ac_llvm_context
*ac
,
2823 const nir_intrinsic_instr
*instr
)
2825 unsigned wait_flags
= 0;
2827 switch (instr
->intrinsic
) {
2828 case nir_intrinsic_memory_barrier
:
2829 case nir_intrinsic_group_memory_barrier
:
2830 wait_flags
= AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
2832 case nir_intrinsic_memory_barrier_atomic_counter
:
2833 case nir_intrinsic_memory_barrier_buffer
:
2834 case nir_intrinsic_memory_barrier_image
:
2835 wait_flags
= AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
2837 case nir_intrinsic_memory_barrier_shared
:
2838 wait_flags
= AC_WAIT_LGKM
;
2844 ac_build_waitcnt(ac
, wait_flags
);
2847 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
2849 /* GFX6 only (thanks to a hw bug workaround):
2850 * The real barrier instruction isn’t needed, because an entire patch
2851 * always fits into a single wave.
2853 if (ac
->chip_class
== GFX6
&& stage
== MESA_SHADER_TESS_CTRL
) {
2854 ac_build_waitcnt(ac
, AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
);
2857 ac_build_s_barrier(ac
);
2860 static void emit_discard(struct ac_nir_context
*ctx
,
2861 const nir_intrinsic_instr
*instr
)
2865 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
2866 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2867 get_src(ctx
, instr
->src
[0]),
2870 assert(instr
->intrinsic
== nir_intrinsic_discard
);
2871 cond
= ctx
->ac
.i1false
;
2874 ctx
->abi
->emit_kill(ctx
->abi
, cond
);
2878 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
2880 LLVMValueRef result
;
2881 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
2882 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2883 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2885 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
2889 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
2891 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2892 LLVMValueRef result
;
2893 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2894 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2895 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
2897 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
2902 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
2904 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2905 return LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2906 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
2908 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
2913 visit_first_invocation(struct ac_nir_context
*ctx
)
2915 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
2916 const char *intr
= ctx
->ac
.wave_size
== 32 ? "llvm.cttz.i32" : "llvm.cttz.i64";
2918 /* The second argument is whether cttz(0) should be defined, but we do not care. */
2919 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
2920 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
, intr
,
2921 ctx
->ac
.iN_wavemask
, args
, 2,
2922 AC_FUNC_ATTR_NOUNWIND
|
2923 AC_FUNC_ATTR_READNONE
);
2925 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
2929 visit_load_shared(struct ac_nir_context
*ctx
,
2930 const nir_intrinsic_instr
*instr
)
2932 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
2934 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
2936 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
2937 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2938 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
2939 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
2942 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
2943 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2947 visit_store_shared(struct ac_nir_context
*ctx
,
2948 const nir_intrinsic_instr
*instr
)
2950 LLVMValueRef derived_ptr
, data
,index
;
2951 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2953 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1]);
2954 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
2956 int writemask
= nir_intrinsic_write_mask(instr
);
2957 for (int chan
= 0; chan
< 4; chan
++) {
2958 if (!(writemask
& (1 << chan
))) {
2961 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2962 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2963 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
2964 LLVMBuildStore(builder
, data
, derived_ptr
);
2968 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
2969 const nir_intrinsic_instr
*instr
,
2970 LLVMValueRef ptr
, int src_idx
)
2972 LLVMValueRef result
;
2973 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
2975 const char *sync_scope
= HAVE_LLVM
>= 0x0900 ? "workgroup-one-as" : "workgroup";
2977 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
2978 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
2979 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
2980 result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, src
, src1
, sync_scope
);
2981 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
2983 LLVMAtomicRMWBinOp op
;
2984 switch (instr
->intrinsic
) {
2985 case nir_intrinsic_shared_atomic_add
:
2986 case nir_intrinsic_deref_atomic_add
:
2987 op
= LLVMAtomicRMWBinOpAdd
;
2989 case nir_intrinsic_shared_atomic_umin
:
2990 case nir_intrinsic_deref_atomic_umin
:
2991 op
= LLVMAtomicRMWBinOpUMin
;
2993 case nir_intrinsic_shared_atomic_umax
:
2994 case nir_intrinsic_deref_atomic_umax
:
2995 op
= LLVMAtomicRMWBinOpUMax
;
2997 case nir_intrinsic_shared_atomic_imin
:
2998 case nir_intrinsic_deref_atomic_imin
:
2999 op
= LLVMAtomicRMWBinOpMin
;
3001 case nir_intrinsic_shared_atomic_imax
:
3002 case nir_intrinsic_deref_atomic_imax
:
3003 op
= LLVMAtomicRMWBinOpMax
;
3005 case nir_intrinsic_shared_atomic_and
:
3006 case nir_intrinsic_deref_atomic_and
:
3007 op
= LLVMAtomicRMWBinOpAnd
;
3009 case nir_intrinsic_shared_atomic_or
:
3010 case nir_intrinsic_deref_atomic_or
:
3011 op
= LLVMAtomicRMWBinOpOr
;
3013 case nir_intrinsic_shared_atomic_xor
:
3014 case nir_intrinsic_deref_atomic_xor
:
3015 op
= LLVMAtomicRMWBinOpXor
;
3017 case nir_intrinsic_shared_atomic_exchange
:
3018 case nir_intrinsic_deref_atomic_exchange
:
3019 op
= LLVMAtomicRMWBinOpXchg
;
3025 result
= ac_build_atomic_rmw(&ctx
->ac
, op
, ptr
, ac_to_integer(&ctx
->ac
, src
), sync_scope
);
3030 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
3032 LLVMValueRef values
[2];
3033 LLVMValueRef pos
[2];
3035 pos
[0] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[0]);
3036 pos
[1] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[1]);
3038 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
3039 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
3040 return ac_build_gather_values(&ctx
->ac
, values
, 2);
3043 static LLVMValueRef
barycentric_center(struct ac_nir_context
*ctx
,
3046 LLVMValueRef interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, mode
, INTERP_CENTER
);
3047 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3050 static LLVMValueRef
barycentric_offset(struct ac_nir_context
*ctx
,
3052 LLVMValueRef offset
)
3054 LLVMValueRef interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, mode
, INTERP_CENTER
);
3055 LLVMValueRef src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_0
, ""));
3056 LLVMValueRef src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_1
, ""));
3058 LLVMValueRef ij_out
[2];
3059 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
3062 * take the I then J parameters, and the DDX/Y for it, and
3063 * calculate the IJ inputs for the interpolator.
3064 * temp1 = ddx * offset/sample.x + I;
3065 * interp_param.I = ddy * offset/sample.y + temp1;
3066 * temp1 = ddx * offset/sample.x + J;
3067 * interp_param.J = ddy * offset/sample.y + temp1;
3069 for (unsigned i
= 0; i
< 2; i
++) {
3070 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
3071 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
3072 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3073 ddxy_out
, ix_ll
, "");
3074 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3075 ddxy_out
, iy_ll
, "");
3076 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3077 interp_param
, ix_ll
, "");
3078 LLVMValueRef temp1
, temp2
;
3080 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
3083 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
3084 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
3086 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
3087 temp2
, ctx
->ac
.i32
, "");
3089 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
3090 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3093 static LLVMValueRef
barycentric_centroid(struct ac_nir_context
*ctx
,
3096 LLVMValueRef interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, mode
, INTERP_CENTROID
);
3097 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3100 static LLVMValueRef
barycentric_at_sample(struct ac_nir_context
*ctx
,
3102 LLVMValueRef sample_id
)
3104 if (ctx
->abi
->interp_at_sample_force_center
)
3105 return barycentric_center(ctx
, mode
);
3107 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
3109 /* fetch sample ID */
3110 LLVMValueRef sample_pos
= ctx
->abi
->load_sample_position(ctx
->abi
, sample_id
);
3112 LLVMValueRef src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_0
, "");
3113 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
3114 LLVMValueRef src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_1
, "");
3115 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
3116 LLVMValueRef coords
[] = { src_c0
, src_c1
};
3117 LLVMValueRef offset
= ac_build_gather_values(&ctx
->ac
, coords
, 2);
3119 return barycentric_offset(ctx
, mode
, offset
);
3123 static LLVMValueRef
barycentric_sample(struct ac_nir_context
*ctx
,
3126 LLVMValueRef interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, mode
, INTERP_SAMPLE
);
3127 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3130 static LLVMValueRef
load_interpolated_input(struct ac_nir_context
*ctx
,
3131 LLVMValueRef interp_param
,
3132 unsigned index
, unsigned comp_start
,
3133 unsigned num_components
,
3136 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3138 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
,
3139 interp_param
, ctx
->ac
.v2f32
, "");
3140 LLVMValueRef i
= LLVMBuildExtractElement(
3141 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_0
, "");
3142 LLVMValueRef j
= LLVMBuildExtractElement(
3143 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_1
, "");
3145 LLVMValueRef values
[4];
3146 assert(bitsize
== 16 || bitsize
== 32);
3147 for (unsigned comp
= 0; comp
< num_components
; comp
++) {
3148 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, comp_start
+ comp
, false);
3149 if (bitsize
== 16) {
3150 values
[comp
] = ac_build_fs_interp_f16(&ctx
->ac
, llvm_chan
, attr_number
,
3151 ctx
->abi
->prim_mask
, i
, j
);
3153 values
[comp
] = ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3154 ctx
->abi
->prim_mask
, i
, j
);
3158 return ac_to_integer(&ctx
->ac
, ac_build_gather_values(&ctx
->ac
, values
, num_components
));
3161 static LLVMValueRef
load_flat_input(struct ac_nir_context
*ctx
,
3162 unsigned index
, unsigned comp_start
,
3163 unsigned num_components
,
3166 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3168 LLVMValueRef values
[8];
3170 /* Each component of a 64-bit value takes up two GL-level channels. */
3172 bit_size
== 64 ? num_components
* 2 : num_components
;
3174 for (unsigned chan
= 0; chan
< channels
; chan
++) {
3175 if (comp_start
+ chan
> 4)
3176 attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
+ 1, false);
3177 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, (comp_start
+ chan
) % 4, false);
3178 values
[chan
] = ac_build_fs_interp_mov(&ctx
->ac
,
3179 LLVMConstInt(ctx
->ac
.i32
, 2, false),
3182 ctx
->abi
->prim_mask
);
3183 values
[chan
] = LLVMBuildBitCast(ctx
->ac
.builder
, values
[chan
], ctx
->ac
.i32
, "");
3184 values
[chan
] = LLVMBuildTruncOrBitCast(ctx
->ac
.builder
, values
[chan
],
3185 bit_size
== 16 ? ctx
->ac
.i16
: ctx
->ac
.i32
, "");
3188 LLVMValueRef result
= ac_build_gather_values(&ctx
->ac
, values
, channels
);
3189 if (bit_size
== 64) {
3190 LLVMTypeRef type
= num_components
== 1 ? ctx
->ac
.i64
:
3191 LLVMVectorType(ctx
->ac
.i64
, num_components
);
3192 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
, type
, "");
3197 static void visit_intrinsic(struct ac_nir_context
*ctx
,
3198 nir_intrinsic_instr
*instr
)
3200 LLVMValueRef result
= NULL
;
3202 switch (instr
->intrinsic
) {
3203 case nir_intrinsic_ballot
:
3204 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3206 case nir_intrinsic_read_invocation
:
3207 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3208 get_src(ctx
, instr
->src
[1]));
3210 case nir_intrinsic_read_first_invocation
:
3211 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
3213 case nir_intrinsic_load_subgroup_invocation
:
3214 result
= ac_get_thread_id(&ctx
->ac
);
3216 case nir_intrinsic_load_work_group_id
: {
3217 LLVMValueRef values
[3];
3219 for (int i
= 0; i
< 3; i
++) {
3220 values
[i
] = ctx
->abi
->workgroup_ids
[i
] ?
3221 ctx
->abi
->workgroup_ids
[i
] : ctx
->ac
.i32_0
;
3224 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
3227 case nir_intrinsic_load_base_vertex
:
3228 case nir_intrinsic_load_first_vertex
:
3229 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
3231 case nir_intrinsic_load_local_group_size
:
3232 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
3234 case nir_intrinsic_load_vertex_id
:
3235 result
= LLVMBuildAdd(ctx
->ac
.builder
, ctx
->abi
->vertex_id
,
3236 ctx
->abi
->base_vertex
, "");
3238 case nir_intrinsic_load_vertex_id_zero_base
: {
3239 result
= ctx
->abi
->vertex_id
;
3242 case nir_intrinsic_load_local_invocation_id
: {
3243 result
= ctx
->abi
->local_invocation_ids
;
3246 case nir_intrinsic_load_base_instance
:
3247 result
= ctx
->abi
->start_instance
;
3249 case nir_intrinsic_load_draw_id
:
3250 result
= ctx
->abi
->draw_id
;
3252 case nir_intrinsic_load_view_index
:
3253 result
= ctx
->abi
->view_index
;
3255 case nir_intrinsic_load_invocation_id
:
3256 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3257 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->tcs_rel_ids
, 8, 5);
3259 if (ctx
->ac
.chip_class
>= GFX10
) {
3260 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3261 ctx
->abi
->gs_invocation_id
,
3262 LLVMConstInt(ctx
->ac
.i32
, 127, 0), "");
3264 result
= ctx
->abi
->gs_invocation_id
;
3268 case nir_intrinsic_load_primitive_id
:
3269 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3270 result
= ctx
->abi
->gs_prim_id
;
3271 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3272 result
= ctx
->abi
->tcs_patch_id
;
3273 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3274 result
= ctx
->abi
->tes_patch_id
;
3276 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3278 case nir_intrinsic_load_sample_id
:
3279 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->ancillary
, 8, 4);
3281 case nir_intrinsic_load_sample_pos
:
3282 result
= load_sample_pos(ctx
);
3284 case nir_intrinsic_load_sample_mask_in
:
3285 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3287 case nir_intrinsic_load_frag_coord
: {
3288 LLVMValueRef values
[4] = {
3289 ctx
->abi
->frag_pos
[0],
3290 ctx
->abi
->frag_pos
[1],
3291 ctx
->abi
->frag_pos
[2],
3292 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
, ctx
->abi
->frag_pos
[3])
3294 result
= ac_to_integer(&ctx
->ac
,
3295 ac_build_gather_values(&ctx
->ac
, values
, 4));
3298 case nir_intrinsic_load_layer_id
:
3299 result
= ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)];
3301 case nir_intrinsic_load_front_face
:
3302 result
= ctx
->abi
->front_face
;
3304 case nir_intrinsic_load_helper_invocation
:
3305 result
= ac_build_load_helper_invocation(&ctx
->ac
);
3307 case nir_intrinsic_load_color0
:
3308 result
= ctx
->abi
->color0
;
3310 case nir_intrinsic_load_color1
:
3311 result
= ctx
->abi
->color1
;
3313 case nir_intrinsic_load_instance_id
:
3314 result
= ctx
->abi
->instance_id
;
3316 case nir_intrinsic_load_num_work_groups
:
3317 result
= ctx
->abi
->num_work_groups
;
3319 case nir_intrinsic_load_local_invocation_index
:
3320 result
= visit_load_local_invocation_index(ctx
);
3322 case nir_intrinsic_load_subgroup_id
:
3323 result
= visit_load_subgroup_id(ctx
);
3325 case nir_intrinsic_load_num_subgroups
:
3326 result
= visit_load_num_subgroups(ctx
);
3328 case nir_intrinsic_first_invocation
:
3329 result
= visit_first_invocation(ctx
);
3331 case nir_intrinsic_load_push_constant
:
3332 result
= visit_load_push_constant(ctx
, instr
);
3334 case nir_intrinsic_vulkan_resource_index
: {
3335 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3336 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3337 unsigned binding
= nir_intrinsic_binding(instr
);
3339 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3343 case nir_intrinsic_vulkan_resource_reindex
:
3344 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3346 case nir_intrinsic_store_ssbo
:
3347 visit_store_ssbo(ctx
, instr
);
3349 case nir_intrinsic_load_ssbo
:
3350 result
= visit_load_buffer(ctx
, instr
);
3352 case nir_intrinsic_ssbo_atomic_add
:
3353 case nir_intrinsic_ssbo_atomic_imin
:
3354 case nir_intrinsic_ssbo_atomic_umin
:
3355 case nir_intrinsic_ssbo_atomic_imax
:
3356 case nir_intrinsic_ssbo_atomic_umax
:
3357 case nir_intrinsic_ssbo_atomic_and
:
3358 case nir_intrinsic_ssbo_atomic_or
:
3359 case nir_intrinsic_ssbo_atomic_xor
:
3360 case nir_intrinsic_ssbo_atomic_exchange
:
3361 case nir_intrinsic_ssbo_atomic_comp_swap
:
3362 result
= visit_atomic_ssbo(ctx
, instr
);
3364 case nir_intrinsic_load_ubo
:
3365 result
= visit_load_ubo_buffer(ctx
, instr
);
3367 case nir_intrinsic_get_buffer_size
:
3368 result
= visit_get_buffer_size(ctx
, instr
);
3370 case nir_intrinsic_load_deref
:
3371 result
= visit_load_var(ctx
, instr
);
3373 case nir_intrinsic_store_deref
:
3374 visit_store_var(ctx
, instr
);
3376 case nir_intrinsic_load_shared
:
3377 result
= visit_load_shared(ctx
, instr
);
3379 case nir_intrinsic_store_shared
:
3380 visit_store_shared(ctx
, instr
);
3382 case nir_intrinsic_bindless_image_samples
:
3383 result
= visit_image_samples(ctx
, instr
, true);
3385 case nir_intrinsic_image_deref_samples
:
3386 result
= visit_image_samples(ctx
, instr
, false);
3388 case nir_intrinsic_bindless_image_load
:
3389 result
= visit_image_load(ctx
, instr
, true);
3391 case nir_intrinsic_image_deref_load
:
3392 result
= visit_image_load(ctx
, instr
, false);
3394 case nir_intrinsic_bindless_image_store
:
3395 visit_image_store(ctx
, instr
, true);
3397 case nir_intrinsic_image_deref_store
:
3398 visit_image_store(ctx
, instr
, false);
3400 case nir_intrinsic_bindless_image_atomic_add
:
3401 case nir_intrinsic_bindless_image_atomic_min
:
3402 case nir_intrinsic_bindless_image_atomic_max
:
3403 case nir_intrinsic_bindless_image_atomic_and
:
3404 case nir_intrinsic_bindless_image_atomic_or
:
3405 case nir_intrinsic_bindless_image_atomic_xor
:
3406 case nir_intrinsic_bindless_image_atomic_exchange
:
3407 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3408 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
3409 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
3410 result
= visit_image_atomic(ctx
, instr
, true);
3412 case nir_intrinsic_image_deref_atomic_add
:
3413 case nir_intrinsic_image_deref_atomic_min
:
3414 case nir_intrinsic_image_deref_atomic_max
:
3415 case nir_intrinsic_image_deref_atomic_and
:
3416 case nir_intrinsic_image_deref_atomic_or
:
3417 case nir_intrinsic_image_deref_atomic_xor
:
3418 case nir_intrinsic_image_deref_atomic_exchange
:
3419 case nir_intrinsic_image_deref_atomic_comp_swap
:
3420 case nir_intrinsic_image_deref_atomic_inc_wrap
:
3421 case nir_intrinsic_image_deref_atomic_dec_wrap
:
3422 result
= visit_image_atomic(ctx
, instr
, false);
3424 case nir_intrinsic_bindless_image_size
:
3425 result
= visit_image_size(ctx
, instr
, true);
3427 case nir_intrinsic_image_deref_size
:
3428 result
= visit_image_size(ctx
, instr
, false);
3430 case nir_intrinsic_shader_clock
:
3431 result
= ac_build_shader_clock(&ctx
->ac
);
3433 case nir_intrinsic_discard
:
3434 case nir_intrinsic_discard_if
:
3435 emit_discard(ctx
, instr
);
3437 case nir_intrinsic_memory_barrier
:
3438 case nir_intrinsic_group_memory_barrier
:
3439 case nir_intrinsic_memory_barrier_atomic_counter
:
3440 case nir_intrinsic_memory_barrier_buffer
:
3441 case nir_intrinsic_memory_barrier_image
:
3442 case nir_intrinsic_memory_barrier_shared
:
3443 emit_membar(&ctx
->ac
, instr
);
3445 case nir_intrinsic_barrier
:
3446 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
3448 case nir_intrinsic_shared_atomic_add
:
3449 case nir_intrinsic_shared_atomic_imin
:
3450 case nir_intrinsic_shared_atomic_umin
:
3451 case nir_intrinsic_shared_atomic_imax
:
3452 case nir_intrinsic_shared_atomic_umax
:
3453 case nir_intrinsic_shared_atomic_and
:
3454 case nir_intrinsic_shared_atomic_or
:
3455 case nir_intrinsic_shared_atomic_xor
:
3456 case nir_intrinsic_shared_atomic_exchange
:
3457 case nir_intrinsic_shared_atomic_comp_swap
: {
3458 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
3459 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3462 case nir_intrinsic_deref_atomic_add
:
3463 case nir_intrinsic_deref_atomic_imin
:
3464 case nir_intrinsic_deref_atomic_umin
:
3465 case nir_intrinsic_deref_atomic_imax
:
3466 case nir_intrinsic_deref_atomic_umax
:
3467 case nir_intrinsic_deref_atomic_and
:
3468 case nir_intrinsic_deref_atomic_or
:
3469 case nir_intrinsic_deref_atomic_xor
:
3470 case nir_intrinsic_deref_atomic_exchange
:
3471 case nir_intrinsic_deref_atomic_comp_swap
: {
3472 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
3473 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3476 case nir_intrinsic_load_barycentric_pixel
:
3477 result
= barycentric_center(ctx
, nir_intrinsic_interp_mode(instr
));
3479 case nir_intrinsic_load_barycentric_centroid
:
3480 result
= barycentric_centroid(ctx
, nir_intrinsic_interp_mode(instr
));
3482 case nir_intrinsic_load_barycentric_sample
:
3483 result
= barycentric_sample(ctx
, nir_intrinsic_interp_mode(instr
));
3485 case nir_intrinsic_load_barycentric_at_offset
: {
3486 LLVMValueRef offset
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3487 result
= barycentric_offset(ctx
, nir_intrinsic_interp_mode(instr
), offset
);
3490 case nir_intrinsic_load_barycentric_at_sample
: {
3491 LLVMValueRef sample_id
= get_src(ctx
, instr
->src
[0]);
3492 result
= barycentric_at_sample(ctx
, nir_intrinsic_interp_mode(instr
), sample_id
);
3495 case nir_intrinsic_load_interpolated_input
: {
3496 /* We assume any indirect loads have been lowered away */
3497 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[1]);
3499 assert(offset
[0].i32
== 0);
3501 LLVMValueRef interp_param
= get_src(ctx
, instr
->src
[0]);
3502 unsigned index
= nir_intrinsic_base(instr
);
3503 unsigned component
= nir_intrinsic_component(instr
);
3504 result
= load_interpolated_input(ctx
, interp_param
, index
,
3506 instr
->dest
.ssa
.num_components
,
3507 instr
->dest
.ssa
.bit_size
);
3510 case nir_intrinsic_load_input
: {
3511 /* We only lower inputs for fragment shaders ATM */
3512 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[0]);
3514 assert(offset
[0].i32
== 0);
3516 unsigned index
= nir_intrinsic_base(instr
);
3517 unsigned component
= nir_intrinsic_component(instr
);
3518 result
= load_flat_input(ctx
, index
, component
,
3519 instr
->dest
.ssa
.num_components
,
3520 instr
->dest
.ssa
.bit_size
);
3523 case nir_intrinsic_emit_vertex
:
3524 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
3526 case nir_intrinsic_end_primitive
:
3527 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
3529 case nir_intrinsic_load_tess_coord
:
3530 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
3532 case nir_intrinsic_load_tess_level_outer
:
3533 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
);
3535 case nir_intrinsic_load_tess_level_inner
:
3536 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
);
3538 case nir_intrinsic_load_patch_vertices_in
:
3539 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
3541 case nir_intrinsic_vote_all
: {
3542 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3543 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3546 case nir_intrinsic_vote_any
: {
3547 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3548 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3551 case nir_intrinsic_shuffle
:
3552 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3553 get_src(ctx
, instr
->src
[1]));
3555 case nir_intrinsic_reduce
:
3556 result
= ac_build_reduce(&ctx
->ac
,
3557 get_src(ctx
, instr
->src
[0]),
3558 instr
->const_index
[0],
3559 instr
->const_index
[1]);
3561 case nir_intrinsic_inclusive_scan
:
3562 result
= ac_build_inclusive_scan(&ctx
->ac
,
3563 get_src(ctx
, instr
->src
[0]),
3564 instr
->const_index
[0]);
3566 case nir_intrinsic_exclusive_scan
:
3567 result
= ac_build_exclusive_scan(&ctx
->ac
,
3568 get_src(ctx
, instr
->src
[0]),
3569 instr
->const_index
[0]);
3571 case nir_intrinsic_quad_broadcast
: {
3572 unsigned lane
= nir_src_as_uint(instr
->src
[1]);
3573 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3574 lane
, lane
, lane
, lane
);
3577 case nir_intrinsic_quad_swap_horizontal
:
3578 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
3580 case nir_intrinsic_quad_swap_vertical
:
3581 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
3583 case nir_intrinsic_quad_swap_diagonal
:
3584 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
3586 case nir_intrinsic_quad_swizzle_amd
: {
3587 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3588 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3589 mask
& 0x3, (mask
>> 2) & 0x3,
3590 (mask
>> 4) & 0x3, (mask
>> 6) & 0x3);
3593 case nir_intrinsic_masked_swizzle_amd
: {
3594 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3595 result
= ac_build_ds_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), mask
);
3598 case nir_intrinsic_write_invocation_amd
:
3599 result
= ac_build_writelane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3600 get_src(ctx
, instr
->src
[1]),
3601 get_src(ctx
, instr
->src
[2]));
3603 case nir_intrinsic_mbcnt_amd
:
3604 result
= ac_build_mbcnt(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3606 case nir_intrinsic_load_scratch
: {
3607 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
3608 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
3610 LLVMTypeRef comp_type
=
3611 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
3612 LLVMTypeRef vec_type
=
3613 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
3614 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
3615 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
3616 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
3617 LLVMPointerType(vec_type
, addr_space
), "");
3618 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
3621 case nir_intrinsic_store_scratch
: {
3622 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
3623 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
3625 LLVMTypeRef comp_type
=
3626 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->src
[0].ssa
->bit_size
);
3627 LLVMTypeRef vec_type
=
3628 instr
->src
[0].ssa
->num_components
== 1 ? comp_type
:
3629 LLVMVectorType(comp_type
, instr
->src
[0].ssa
->num_components
);
3630 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
3631 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
3632 LLVMPointerType(vec_type
, addr_space
), "");
3633 LLVMBuildStore(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[0]), ptr
);
3637 fprintf(stderr
, "Unknown intrinsic: ");
3638 nir_print_instr(&instr
->instr
, stderr
);
3639 fprintf(stderr
, "\n");
3643 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3647 static LLVMValueRef
get_bindless_index_from_uniform(struct ac_nir_context
*ctx
,
3648 unsigned base_index
,
3649 unsigned constant_index
,
3650 LLVMValueRef dynamic_index
)
3652 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, base_index
* 4, 0);
3653 LLVMValueRef index
= LLVMBuildAdd(ctx
->ac
.builder
, dynamic_index
,
3654 LLVMConstInt(ctx
->ac
.i32
, constant_index
, 0), "");
3656 /* Bindless uniforms are 64bit so multiple index by 8 */
3657 index
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i32
, 8, 0), "");
3658 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, index
, "");
3660 LLVMValueRef ubo_index
= ctx
->abi
->load_ubo(ctx
->abi
, ctx
->ac
.i32_0
);
3662 LLVMValueRef ret
= ac_build_buffer_load(&ctx
->ac
, ubo_index
, 1, NULL
, offset
,
3663 NULL
, 0, 0, true, true);
3665 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ctx
->ac
.i32
, "");
3668 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
3669 nir_deref_instr
*deref_instr
,
3670 enum ac_descriptor_type desc_type
,
3671 const nir_instr
*instr
,
3672 bool image
, bool write
)
3674 LLVMValueRef index
= NULL
;
3675 unsigned constant_index
= 0;
3676 unsigned descriptor_set
;
3677 unsigned base_index
;
3678 bool bindless
= false;
3683 nir_intrinsic_instr
*img_instr
= nir_instr_as_intrinsic(instr
);
3686 index
= get_src(ctx
, img_instr
->src
[0]);
3688 nir_tex_instr
*tex_instr
= nir_instr_as_tex(instr
);
3689 int sampSrcIdx
= nir_tex_instr_src_index(tex_instr
,
3690 nir_tex_src_sampler_handle
);
3691 if (sampSrcIdx
!= -1) {
3694 index
= get_src(ctx
, tex_instr
->src
[sampSrcIdx
].src
);
3696 assert(tex_instr
&& !image
);
3697 base_index
= tex_instr
->sampler_index
;
3701 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3702 if (deref_instr
->deref_type
== nir_deref_type_array
) {
3703 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
3707 if (nir_src_is_const(deref_instr
->arr
.index
)) {
3708 constant_index
+= array_size
* nir_src_as_uint(deref_instr
->arr
.index
);
3710 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3712 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3713 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
3718 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
3721 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3722 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
3723 unsigned sidx
= deref_instr
->strct
.index
;
3724 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3725 constant_index
+= glsl_get_struct_location_offset(deref_instr
->type
, sidx
);
3727 unreachable("Unsupported deref type");
3730 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
3732 if (deref_instr
->var
->data
.bindless
) {
3733 /* For now just assert on unhandled variable types */
3734 assert(deref_instr
->var
->data
.mode
== nir_var_uniform
);
3736 base_index
= deref_instr
->var
->data
.driver_location
;
3739 index
= index
? index
: ctx
->ac
.i32_0
;
3740 index
= get_bindless_index_from_uniform(ctx
, base_index
,
3741 constant_index
, index
);
3743 base_index
= deref_instr
->var
->data
.binding
;
3746 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
3749 constant_index
, index
,
3750 desc_type
, image
, write
, bindless
);
3753 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
3756 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
3757 * filtering manually. The driver sets img7 to a mask clearing
3758 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
3759 * s_and_b32 samp0, samp0, img7
3762 * The ANISO_OVERRIDE sampler field enables this fix in TA.
3764 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
3765 LLVMValueRef res
, LLVMValueRef samp
)
3767 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3768 LLVMValueRef img7
, samp0
;
3770 if (ctx
->ac
.chip_class
>= GFX8
)
3773 img7
= LLVMBuildExtractElement(builder
, res
,
3774 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
3775 samp0
= LLVMBuildExtractElement(builder
, samp
,
3776 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3777 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
3778 return LLVMBuildInsertElement(builder
, samp
, samp0
,
3779 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3782 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
3783 nir_tex_instr
*instr
,
3784 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
3785 LLVMValueRef
*fmask_ptr
)
3787 nir_deref_instr
*texture_deref_instr
= NULL
;
3788 nir_deref_instr
*sampler_deref_instr
= NULL
;
3791 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3792 switch (instr
->src
[i
].src_type
) {
3793 case nir_tex_src_texture_deref
:
3794 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3796 case nir_tex_src_sampler_deref
:
3797 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3799 case nir_tex_src_plane
:
3800 plane
= nir_src_as_int(instr
->src
[i
].src
);
3807 if (!sampler_deref_instr
)
3808 sampler_deref_instr
= texture_deref_instr
;
3810 enum ac_descriptor_type main_descriptor
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
? AC_DESC_BUFFER
: AC_DESC_IMAGE
;
3813 assert(instr
->op
!= nir_texop_txf_ms
&&
3814 instr
->op
!= nir_texop_samples_identical
);
3815 assert(instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
);
3817 main_descriptor
= AC_DESC_PLANE_0
+ plane
;
3820 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, main_descriptor
, &instr
->instr
, false, false);
3823 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, &instr
->instr
, false, false);
3824 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
3825 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
3827 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
3828 instr
->op
== nir_texop_samples_identical
))
3829 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
, &instr
->instr
, false, false);
3832 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
3835 coord
= ac_to_float(ctx
, coord
);
3836 coord
= ac_build_round(ctx
, coord
);
3837 coord
= ac_to_integer(ctx
, coord
);
3841 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
3843 LLVMValueRef result
= NULL
;
3844 struct ac_image_args args
= { 0 };
3845 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
3846 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
3847 unsigned offset_src
= 0;
3849 tex_fetch_ptrs(ctx
, instr
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
3851 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3852 switch (instr
->src
[i
].src_type
) {
3853 case nir_tex_src_coord
: {
3854 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
3855 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
3856 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
3859 case nir_tex_src_projector
:
3861 case nir_tex_src_comparator
:
3862 if (instr
->is_shadow
)
3863 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
3865 case nir_tex_src_offset
:
3866 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
3869 case nir_tex_src_bias
:
3870 if (instr
->op
== nir_texop_txb
)
3871 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
3873 case nir_tex_src_lod
: {
3874 if (nir_src_is_const(instr
->src
[i
].src
) && nir_src_as_uint(instr
->src
[i
].src
) == 0)
3875 args
.level_zero
= true;
3877 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
3880 case nir_tex_src_ms_index
:
3881 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
3883 case nir_tex_src_ms_mcs
:
3885 case nir_tex_src_ddx
:
3886 ddx
= get_src(ctx
, instr
->src
[i
].src
);
3888 case nir_tex_src_ddy
:
3889 ddy
= get_src(ctx
, instr
->src
[i
].src
);
3891 case nir_tex_src_texture_offset
:
3892 case nir_tex_src_sampler_offset
:
3893 case nir_tex_src_plane
:
3899 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
3900 result
= get_buffer_size(ctx
, args
.resource
, true);
3904 if (instr
->op
== nir_texop_texture_samples
) {
3905 LLVMValueRef res
, samples
, is_msaa
;
3906 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
3907 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
3908 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
3909 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
3910 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
3911 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
3912 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
3913 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
3914 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
3916 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
3917 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
3918 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
3919 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
3920 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
3922 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
3928 if (args
.offset
&& instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
3929 LLVMValueRef offset
[3], pack
;
3930 for (unsigned chan
= 0; chan
< 3; ++chan
)
3931 offset
[chan
] = ctx
->ac
.i32_0
;
3933 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
3934 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
3935 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
3936 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
3937 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
3939 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
3940 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
3942 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
3943 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
3947 /* TC-compatible HTILE on radeonsi promotes Z16 and Z24 to Z32_FLOAT,
3948 * so the depth comparison value isn't clamped for Z16 and
3949 * Z24 anymore. Do it manually here for GFX8-9; GFX10 has an explicitly
3950 * clamped 32-bit float format.
3952 * It's unnecessary if the original texture format was
3953 * Z32_FLOAT, but we don't know that here.
3956 ctx
->ac
.chip_class
>= GFX8
&&
3957 ctx
->ac
.chip_class
<= GFX9
&&
3958 ctx
->abi
->clamp_shadow_reference
)
3959 args
.compare
= ac_build_clamp(&ctx
->ac
, ac_to_float(&ctx
->ac
, args
.compare
));
3961 /* pack derivatives */
3963 int num_src_deriv_channels
, num_dest_deriv_channels
;
3964 switch (instr
->sampler_dim
) {
3965 case GLSL_SAMPLER_DIM_3D
:
3966 case GLSL_SAMPLER_DIM_CUBE
:
3967 num_src_deriv_channels
= 3;
3968 num_dest_deriv_channels
= 3;
3970 case GLSL_SAMPLER_DIM_2D
:
3972 num_src_deriv_channels
= 2;
3973 num_dest_deriv_channels
= 2;
3975 case GLSL_SAMPLER_DIM_1D
:
3976 num_src_deriv_channels
= 1;
3977 if (ctx
->ac
.chip_class
== GFX9
) {
3978 num_dest_deriv_channels
= 2;
3980 num_dest_deriv_channels
= 1;
3985 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
3986 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
3987 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
3988 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
3989 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
3991 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
3992 args
.derivs
[i
] = ctx
->ac
.f32_0
;
3993 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
3997 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
3998 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
3999 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
4000 if (instr
->coord_components
== 3)
4001 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
4002 ac_prepare_cube_coords(&ctx
->ac
,
4003 instr
->op
== nir_texop_txd
, instr
->is_array
,
4004 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
4007 /* Texture coordinates fixups */
4008 if (instr
->coord_components
> 1 &&
4009 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4011 instr
->op
!= nir_texop_txf
) {
4012 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
4015 if (instr
->coord_components
> 2 &&
4016 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
4017 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
4018 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
4019 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
4021 instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
4022 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
4025 if (ctx
->ac
.chip_class
== GFX9
&&
4026 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4027 instr
->op
!= nir_texop_lod
) {
4028 LLVMValueRef filler
;
4029 if (instr
->op
== nir_texop_txf
)
4030 filler
= ctx
->ac
.i32_0
;
4032 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
4034 if (instr
->is_array
)
4035 args
.coords
[2] = args
.coords
[1];
4036 args
.coords
[1] = filler
;
4039 /* Pack sample index */
4040 if (instr
->op
== nir_texop_txf_ms
&& sample_index
)
4041 args
.coords
[instr
->coord_components
] = sample_index
;
4043 if (instr
->op
== nir_texop_samples_identical
) {
4044 struct ac_image_args txf_args
= { 0 };
4045 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
4047 txf_args
.dmask
= 0xf;
4048 txf_args
.resource
= fmask_ptr
;
4049 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
4050 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
4052 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4053 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
4057 if ((instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
||
4058 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
) &&
4059 instr
->op
!= nir_texop_txs
) {
4060 unsigned sample_chan
= instr
->is_array
? 3 : 2;
4061 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
4062 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
4063 instr
->is_array
? args
.coords
[2] : NULL
,
4064 args
.coords
[sample_chan
], fmask_ptr
);
4067 if (args
.offset
&& (instr
->op
== nir_texop_txf
|| instr
->op
== nir_texop_txf_ms
)) {
4068 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
4069 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
4070 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
4071 args
.coords
[i
] = LLVMBuildAdd(
4072 ctx
->ac
.builder
, args
.coords
[i
],
4073 LLVMConstInt(ctx
->ac
.i32
, nir_src_comp_as_uint(instr
->src
[offset_src
].src
, i
), false), "");
4078 /* DMASK was repurposed for GATHER4. 4 components are always
4079 * returned and DMASK works like a swizzle - it selects
4080 * the component to fetch. The only valid DMASK values are
4081 * 1=red, 2=green, 4=blue, 8=alpha. (e.g. 1 returns
4082 * (red,red,red,red) etc.) The ISA document doesn't mention
4086 if (instr
->op
== nir_texop_tg4
) {
4087 if (instr
->is_shadow
)
4090 args
.dmask
= 1 << instr
->component
;
4093 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
)
4094 args
.dim
= get_ac_sampler_dim(&ctx
->ac
, instr
->sampler_dim
, instr
->is_array
);
4095 result
= build_tex_intrinsic(ctx
, instr
, &args
);
4097 if (instr
->op
== nir_texop_query_levels
)
4098 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4099 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
4100 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
4101 instr
->op
!= nir_texop_tg4
)
4102 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4103 else if (instr
->op
== nir_texop_txs
&&
4104 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
4106 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4107 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
4108 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4109 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
4110 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
4111 } else if (ctx
->ac
.chip_class
== GFX9
&&
4112 instr
->op
== nir_texop_txs
&&
4113 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4115 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4116 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4117 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
4119 } else if (instr
->dest
.ssa
.num_components
!= 4)
4120 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
4124 assert(instr
->dest
.is_ssa
);
4125 result
= ac_to_integer(&ctx
->ac
, result
);
4126 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4131 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
4133 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
4134 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
4136 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4137 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
4140 static void visit_post_phi(struct ac_nir_context
*ctx
,
4141 nir_phi_instr
*instr
,
4142 LLVMValueRef llvm_phi
)
4144 nir_foreach_phi_src(src
, instr
) {
4145 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
4146 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
4148 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
4152 static void phi_post_pass(struct ac_nir_context
*ctx
)
4154 hash_table_foreach(ctx
->phis
, entry
) {
4155 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
4156 (LLVMValueRef
)entry
->data
);
4161 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
4162 const nir_ssa_undef_instr
*instr
)
4164 unsigned num_components
= instr
->def
.num_components
;
4165 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
4168 if (num_components
== 1)
4169 undef
= LLVMGetUndef(type
);
4171 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
4173 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
4176 static void visit_jump(struct ac_llvm_context
*ctx
,
4177 const nir_jump_instr
*instr
)
4179 switch (instr
->type
) {
4180 case nir_jump_break
:
4181 ac_build_break(ctx
);
4183 case nir_jump_continue
:
4184 ac_build_continue(ctx
);
4187 fprintf(stderr
, "Unknown NIR jump instr: ");
4188 nir_print_instr(&instr
->instr
, stderr
);
4189 fprintf(stderr
, "\n");
4195 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
4196 enum glsl_base_type type
)
4200 case GLSL_TYPE_UINT
:
4201 case GLSL_TYPE_BOOL
:
4202 case GLSL_TYPE_SUBROUTINE
:
4204 case GLSL_TYPE_INT8
:
4205 case GLSL_TYPE_UINT8
:
4207 case GLSL_TYPE_INT16
:
4208 case GLSL_TYPE_UINT16
:
4210 case GLSL_TYPE_FLOAT
:
4212 case GLSL_TYPE_FLOAT16
:
4214 case GLSL_TYPE_INT64
:
4215 case GLSL_TYPE_UINT64
:
4217 case GLSL_TYPE_DOUBLE
:
4220 unreachable("unknown GLSL type");
4225 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
4226 const struct glsl_type
*type
)
4228 if (glsl_type_is_scalar(type
)) {
4229 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
4232 if (glsl_type_is_vector(type
)) {
4233 return LLVMVectorType(
4234 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
4235 glsl_get_vector_elements(type
));
4238 if (glsl_type_is_matrix(type
)) {
4239 return LLVMArrayType(
4240 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
4241 glsl_get_matrix_columns(type
));
4244 if (glsl_type_is_array(type
)) {
4245 return LLVMArrayType(
4246 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
4247 glsl_get_length(type
));
4250 assert(glsl_type_is_struct_or_ifc(type
));
4252 LLVMTypeRef member_types
[glsl_get_length(type
)];
4254 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
4256 glsl_to_llvm_type(ac
,
4257 glsl_get_struct_field(type
, i
));
4260 return LLVMStructTypeInContext(ac
->context
, member_types
,
4261 glsl_get_length(type
), false);
4264 static void visit_deref(struct ac_nir_context
*ctx
,
4265 nir_deref_instr
*instr
)
4267 if (instr
->mode
!= nir_var_mem_shared
&&
4268 instr
->mode
!= nir_var_mem_global
)
4271 LLVMValueRef result
= NULL
;
4272 switch(instr
->deref_type
) {
4273 case nir_deref_type_var
: {
4274 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
4275 result
= entry
->data
;
4278 case nir_deref_type_struct
:
4279 if (instr
->mode
== nir_var_mem_global
) {
4280 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4281 uint64_t offset
= glsl_get_struct_field_offset(parent
->type
,
4282 instr
->strct
.index
);
4283 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4284 LLVMConstInt(ctx
->ac
.i32
, offset
, 0));
4286 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4287 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
4290 case nir_deref_type_array
:
4291 if (instr
->mode
== nir_var_mem_global
) {
4292 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4293 unsigned stride
= glsl_get_explicit_stride(parent
->type
);
4295 if ((glsl_type_is_matrix(parent
->type
) &&
4296 glsl_matrix_type_is_row_major(parent
->type
)) ||
4297 (glsl_type_is_vector(parent
->type
) && stride
== 0))
4298 stride
= type_scalar_size_bytes(parent
->type
);
4301 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4302 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4303 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4305 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4307 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4309 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4310 get_src(ctx
, instr
->arr
.index
));
4313 case nir_deref_type_ptr_as_array
:
4314 if (instr
->mode
== nir_var_mem_global
) {
4315 unsigned stride
= nir_deref_instr_ptr_as_array_stride(instr
);
4317 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4318 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4319 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4321 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4323 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4325 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4326 get_src(ctx
, instr
->arr
.index
));
4329 case nir_deref_type_cast
: {
4330 result
= get_src(ctx
, instr
->parent
);
4332 /* We can't use the structs from LLVM because the shader
4333 * specifies its own offsets. */
4334 LLVMTypeRef pointee_type
= ctx
->ac
.i8
;
4335 if (instr
->mode
== nir_var_mem_shared
)
4336 pointee_type
= glsl_to_llvm_type(&ctx
->ac
, instr
->type
);
4338 unsigned address_space
;
4340 switch(instr
->mode
) {
4341 case nir_var_mem_shared
:
4342 address_space
= AC_ADDR_SPACE_LDS
;
4344 case nir_var_mem_global
:
4345 address_space
= AC_ADDR_SPACE_GLOBAL
;
4348 unreachable("Unhandled address space");
4351 LLVMTypeRef type
= LLVMPointerType(pointee_type
, address_space
);
4353 if (LLVMTypeOf(result
) != type
) {
4354 if (LLVMGetTypeKind(LLVMTypeOf(result
)) == LLVMVectorTypeKind
) {
4355 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
,
4358 result
= LLVMBuildIntToPtr(ctx
->ac
.builder
, result
,
4365 unreachable("Unhandled deref_instr deref type");
4368 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4371 static void visit_cf_list(struct ac_nir_context
*ctx
,
4372 struct exec_list
*list
);
4374 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
4376 nir_foreach_instr(instr
, block
)
4378 switch (instr
->type
) {
4379 case nir_instr_type_alu
:
4380 visit_alu(ctx
, nir_instr_as_alu(instr
));
4382 case nir_instr_type_load_const
:
4383 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
4385 case nir_instr_type_intrinsic
:
4386 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
4388 case nir_instr_type_tex
:
4389 visit_tex(ctx
, nir_instr_as_tex(instr
));
4391 case nir_instr_type_phi
:
4392 visit_phi(ctx
, nir_instr_as_phi(instr
));
4394 case nir_instr_type_ssa_undef
:
4395 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
4397 case nir_instr_type_jump
:
4398 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
4400 case nir_instr_type_deref
:
4401 visit_deref(ctx
, nir_instr_as_deref(instr
));
4404 fprintf(stderr
, "Unknown NIR instr type: ");
4405 nir_print_instr(instr
, stderr
);
4406 fprintf(stderr
, "\n");
4411 _mesa_hash_table_insert(ctx
->defs
, block
,
4412 LLVMGetInsertBlock(ctx
->ac
.builder
));
4415 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
4417 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
4419 nir_block
*then_block
=
4420 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
4422 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
4424 visit_cf_list(ctx
, &if_stmt
->then_list
);
4426 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
4427 nir_block
*else_block
=
4428 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
4430 ac_build_else(&ctx
->ac
, else_block
->index
);
4431 visit_cf_list(ctx
, &if_stmt
->else_list
);
4434 ac_build_endif(&ctx
->ac
, then_block
->index
);
4437 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
4439 nir_block
*first_loop_block
=
4440 (nir_block
*) exec_list_get_head(&loop
->body
);
4442 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
4444 visit_cf_list(ctx
, &loop
->body
);
4446 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
4449 static void visit_cf_list(struct ac_nir_context
*ctx
,
4450 struct exec_list
*list
)
4452 foreach_list_typed(nir_cf_node
, node
, node
, list
)
4454 switch (node
->type
) {
4455 case nir_cf_node_block
:
4456 visit_block(ctx
, nir_cf_node_as_block(node
));
4459 case nir_cf_node_if
:
4460 visit_if(ctx
, nir_cf_node_as_if(node
));
4463 case nir_cf_node_loop
:
4464 visit_loop(ctx
, nir_cf_node_as_loop(node
));
4474 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
4475 struct ac_shader_abi
*abi
,
4476 struct nir_shader
*nir
,
4477 struct nir_variable
*variable
,
4478 gl_shader_stage stage
)
4480 unsigned output_loc
= variable
->data
.driver_location
/ 4;
4481 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4483 /* tess ctrl has it's own load/store paths for outputs */
4484 if (stage
== MESA_SHADER_TESS_CTRL
)
4487 if (stage
== MESA_SHADER_VERTEX
||
4488 stage
== MESA_SHADER_TESS_EVAL
||
4489 stage
== MESA_SHADER_GEOMETRY
) {
4490 int idx
= variable
->data
.location
+ variable
->data
.index
;
4491 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
4492 int length
= nir
->info
.clip_distance_array_size
+
4493 nir
->info
.cull_distance_array_size
;
4502 bool is_16bit
= glsl_type_is_16bit(glsl_without_array(variable
->type
));
4503 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
4504 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
4505 for (unsigned chan
= 0; chan
< 4; chan
++) {
4506 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
4507 ac_build_alloca_undef(ctx
, type
, "");
4513 setup_locals(struct ac_nir_context
*ctx
,
4514 struct nir_function
*func
)
4517 ctx
->num_locals
= 0;
4518 nir_foreach_variable(variable
, &func
->impl
->locals
) {
4519 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4520 variable
->data
.driver_location
= ctx
->num_locals
* 4;
4521 variable
->data
.location_frac
= 0;
4522 ctx
->num_locals
+= attrib_count
;
4524 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
4528 for (i
= 0; i
< ctx
->num_locals
; i
++) {
4529 for (j
= 0; j
< 4; j
++) {
4530 ctx
->locals
[i
* 4 + j
] =
4531 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
4537 setup_scratch(struct ac_nir_context
*ctx
,
4538 struct nir_shader
*shader
)
4540 if (shader
->scratch_size
== 0)
4543 ctx
->scratch
= ac_build_alloca_undef(&ctx
->ac
,
4544 LLVMArrayType(ctx
->ac
.i8
, shader
->scratch_size
),
4549 setup_shared(struct ac_nir_context
*ctx
,
4550 struct nir_shader
*nir
)
4552 nir_foreach_variable(variable
, &nir
->shared
) {
4553 LLVMValueRef shared
=
4554 LLVMAddGlobalInAddressSpace(
4555 ctx
->ac
.module
, glsl_to_llvm_type(&ctx
->ac
, variable
->type
),
4556 variable
->name
? variable
->name
: "",
4558 _mesa_hash_table_insert(ctx
->vars
, variable
, shared
);
4562 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
4563 struct nir_shader
*nir
)
4565 struct ac_nir_context ctx
= {};
4566 struct nir_function
*func
;
4571 ctx
.stage
= nir
->info
.stage
;
4572 ctx
.info
= &nir
->info
;
4574 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
4576 nir_foreach_variable(variable
, &nir
->outputs
)
4577 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
4580 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4581 _mesa_key_pointer_equal
);
4582 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4583 _mesa_key_pointer_equal
);
4584 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4585 _mesa_key_pointer_equal
);
4587 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
4589 nir_index_ssa_defs(func
->impl
);
4590 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
4592 setup_locals(&ctx
, func
);
4593 setup_scratch(&ctx
, nir
);
4595 if (gl_shader_stage_is_compute(nir
->info
.stage
))
4596 setup_shared(&ctx
, nir
);
4598 visit_cf_list(&ctx
, &func
->impl
->body
);
4599 phi_post_pass(&ctx
);
4601 if (!gl_shader_stage_is_compute(nir
->info
.stage
))
4602 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
4607 ralloc_free(ctx
.defs
);
4608 ralloc_free(ctx
.phis
);
4609 ralloc_free(ctx
.vars
);
4613 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
4615 /* Lower large variables to scratch first so that we won't bloat the
4616 * shader by generating large if ladders for them. We later lower
4617 * scratch to alloca's, assuming LLVM won't generate VGPR indexing.
4619 NIR_PASS_V(nir
, nir_lower_vars_to_scratch
,
4620 nir_var_function_temp
,
4622 glsl_get_natural_size_align_bytes
);
4624 /* While it would be nice not to have this flag, we are constrained
4625 * by the reality that LLVM 9.0 has buggy VGPR indexing on GFX9.
4627 bool llvm_has_working_vgpr_indexing
= chip_class
!= GFX9
;
4629 /* TODO: Indirect indexing of GS inputs is unimplemented.
4631 * TCS and TES load inputs directly from LDS or offchip memory, so
4632 * indirect indexing is trivial.
4634 nir_variable_mode indirect_mask
= 0;
4635 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
4636 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
4637 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
4638 !llvm_has_working_vgpr_indexing
)) {
4639 indirect_mask
|= nir_var_shader_in
;
4641 if (!llvm_has_working_vgpr_indexing
&&
4642 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
4643 indirect_mask
|= nir_var_shader_out
;
4645 /* TODO: We shouldn't need to do this, however LLVM isn't currently
4646 * smart enough to handle indirects without causing excess spilling
4647 * causing the gpu to hang.
4649 * See the following thread for more details of the problem:
4650 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
4652 indirect_mask
|= nir_var_function_temp
;
4654 nir_lower_indirect_derefs(nir
, indirect_mask
);
4658 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
4660 if (intrin
->intrinsic
!= nir_intrinsic_store_deref
)
4664 nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[0]));
4666 if (var
->data
.mode
!= nir_var_shader_out
)
4669 unsigned writemask
= 0;
4670 const int location
= var
->data
.location
;
4671 unsigned first_component
= var
->data
.location_frac
;
4672 unsigned num_comps
= intrin
->dest
.ssa
.num_components
;
4674 if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
4675 writemask
= ((1 << (num_comps
+ 1)) - 1) << first_component
;
4676 else if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
4677 writemask
= (((1 << (num_comps
+ 1)) - 1) << first_component
) << 4;
4683 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
4684 unsigned *cond_block_tf_writemask
,
4685 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
4687 switch (cf_node
->type
) {
4688 case nir_cf_node_block
: {
4689 nir_block
*block
= nir_cf_node_as_block(cf_node
);
4690 nir_foreach_instr(instr
, block
) {
4691 if (instr
->type
!= nir_instr_type_intrinsic
)
4694 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
4695 if (intrin
->intrinsic
== nir_intrinsic_barrier
) {
4697 /* If we find a barrier in nested control flow put this in the
4698 * too hard basket. In GLSL this is not possible but it is in
4702 *tessfactors_are_def_in_all_invocs
= false;
4706 /* The following case must be prevented:
4707 * gl_TessLevelInner = ...;
4709 * if (gl_InvocationID == 1)
4710 * gl_TessLevelInner = ...;
4712 * If you consider disjoint code segments separated by barriers, each
4713 * such segment that writes tess factor channels should write the same
4714 * channels in all codepaths within that segment.
4716 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
4717 /* Accumulate the result: */
4718 *tessfactors_are_def_in_all_invocs
&=
4719 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
4721 /* Analyze the next code segment from scratch. */
4722 *upper_block_tf_writemask
= 0;
4723 *cond_block_tf_writemask
= 0;
4726 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
4731 case nir_cf_node_if
: {
4732 unsigned then_tessfactor_writemask
= 0;
4733 unsigned else_tessfactor_writemask
= 0;
4735 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
4736 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
4737 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
4738 cond_block_tf_writemask
,
4739 tessfactors_are_def_in_all_invocs
, true);
4742 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
4743 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
4744 cond_block_tf_writemask
,
4745 tessfactors_are_def_in_all_invocs
, true);
4748 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
4749 /* If both statements write the same tess factor channels,
4750 * we can say that the upper block writes them too.
4752 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
4753 else_tessfactor_writemask
;
4754 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
4755 else_tessfactor_writemask
;
4760 case nir_cf_node_loop
: {
4761 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
4762 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
4763 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
4764 cond_block_tf_writemask
,
4765 tessfactors_are_def_in_all_invocs
, true);
4771 unreachable("unknown cf node type");
4776 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
4778 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
4780 /* The pass works as follows:
4781 * If all codepaths write tess factors, we can say that all
4782 * invocations define tess factors.
4784 * Each tess factor channel is tracked separately.
4786 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
4787 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
4789 /* Initial value = true. Here the pass will accumulate results from
4790 * multiple segments surrounded by barriers. If tess factors aren't
4791 * written at all, it's a shader bug and we don't care if this will be
4794 bool tessfactors_are_def_in_all_invocs
= true;
4796 nir_foreach_function(function
, nir
) {
4797 if (function
->impl
) {
4798 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
4799 scan_tess_ctrl(node
, &main_block_tf_writemask
,
4800 &cond_block_tf_writemask
,
4801 &tessfactors_are_def_in_all_invocs
,
4807 /* Accumulate the result for the last code segment separated by a
4810 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
4811 tessfactors_are_def_in_all_invocs
&=
4812 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
4815 return tessfactors_are_def_in_all_invocs
;