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
;
42 LLVMValueRef
*ssa_defs
;
44 struct hash_table
*defs
;
45 struct hash_table
*phis
;
46 struct hash_table
*vars
;
48 LLVMValueRef main_function
;
49 LLVMBasicBlockRef continue_block
;
50 LLVMBasicBlockRef break_block
;
56 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
57 nir_deref_instr
*deref_instr
,
58 enum ac_descriptor_type desc_type
,
59 const nir_tex_instr
*instr
,
60 bool image
, bool write
);
63 build_store_values_extended(struct ac_llvm_context
*ac
,
66 unsigned value_stride
,
69 LLVMBuilderRef builder
= ac
->builder
;
72 for (i
= 0; i
< value_count
; i
++) {
73 LLVMValueRef ptr
= values
[i
* value_stride
];
74 LLVMValueRef index
= LLVMConstInt(ac
->i32
, i
, false);
75 LLVMValueRef value
= LLVMBuildExtractElement(builder
, vec
, index
, "");
76 LLVMBuildStore(builder
, value
, ptr
);
80 static enum ac_image_dim
81 get_ac_sampler_dim(const struct ac_llvm_context
*ctx
, enum glsl_sampler_dim dim
,
85 case GLSL_SAMPLER_DIM_1D
:
86 if (ctx
->chip_class
>= GFX9
)
87 return is_array
? ac_image_2darray
: ac_image_2d
;
88 return is_array
? ac_image_1darray
: ac_image_1d
;
89 case GLSL_SAMPLER_DIM_2D
:
90 case GLSL_SAMPLER_DIM_RECT
:
91 case GLSL_SAMPLER_DIM_EXTERNAL
:
92 return is_array
? ac_image_2darray
: ac_image_2d
;
93 case GLSL_SAMPLER_DIM_3D
:
95 case GLSL_SAMPLER_DIM_CUBE
:
97 case GLSL_SAMPLER_DIM_MS
:
98 return is_array
? ac_image_2darraymsaa
: ac_image_2dmsaa
;
99 case GLSL_SAMPLER_DIM_SUBPASS
:
100 return ac_image_2darray
;
101 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
102 return ac_image_2darraymsaa
;
104 unreachable("bad sampler dim");
108 static enum ac_image_dim
109 get_ac_image_dim(const struct ac_llvm_context
*ctx
, enum glsl_sampler_dim sdim
,
112 enum ac_image_dim dim
= get_ac_sampler_dim(ctx
, sdim
, is_array
);
114 if (dim
== ac_image_cube
||
115 (ctx
->chip_class
<= VI
&& dim
== ac_image_3d
))
116 dim
= ac_image_2darray
;
121 static LLVMTypeRef
get_def_type(struct ac_nir_context
*ctx
,
122 const nir_ssa_def
*def
)
124 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, def
->bit_size
);
125 if (def
->num_components
> 1) {
126 type
= LLVMVectorType(type
, def
->num_components
);
131 static LLVMValueRef
get_src(struct ac_nir_context
*nir
, nir_src src
)
134 return nir
->ssa_defs
[src
.ssa
->index
];
138 get_memory_ptr(struct ac_nir_context
*ctx
, nir_src src
)
140 LLVMValueRef ptr
= get_src(ctx
, src
);
141 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ctx
->ac
.lds
, &ptr
, 1, "");
142 int addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
144 return LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
145 LLVMPointerType(ctx
->ac
.i32
, addr_space
), "");
148 static LLVMBasicBlockRef
get_block(struct ac_nir_context
*nir
,
149 const struct nir_block
*b
)
151 struct hash_entry
*entry
= _mesa_hash_table_search(nir
->defs
, b
);
152 return (LLVMBasicBlockRef
)entry
->data
;
155 static LLVMValueRef
get_alu_src(struct ac_nir_context
*ctx
,
157 unsigned num_components
)
159 LLVMValueRef value
= get_src(ctx
, src
.src
);
160 bool need_swizzle
= false;
163 unsigned src_components
= ac_get_llvm_num_components(value
);
164 for (unsigned i
= 0; i
< num_components
; ++i
) {
165 assert(src
.swizzle
[i
] < src_components
);
166 if (src
.swizzle
[i
] != i
)
170 if (need_swizzle
|| num_components
!= src_components
) {
171 LLVMValueRef masks
[] = {
172 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[0], false),
173 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[1], false),
174 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[2], false),
175 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[3], false)};
177 if (src_components
> 1 && num_components
== 1) {
178 value
= LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
180 } else if (src_components
== 1 && num_components
> 1) {
181 LLVMValueRef values
[] = {value
, value
, value
, value
};
182 value
= ac_build_gather_values(&ctx
->ac
, values
, num_components
);
184 LLVMValueRef swizzle
= LLVMConstVector(masks
, num_components
);
185 value
= LLVMBuildShuffleVector(ctx
->ac
.builder
, value
, value
,
194 static LLVMValueRef
emit_int_cmp(struct ac_llvm_context
*ctx
,
195 LLVMIntPredicate pred
, LLVMValueRef src0
,
198 LLVMValueRef result
= LLVMBuildICmp(ctx
->builder
, pred
, src0
, src1
, "");
199 return LLVMBuildSelect(ctx
->builder
, result
,
200 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
204 static LLVMValueRef
emit_float_cmp(struct ac_llvm_context
*ctx
,
205 LLVMRealPredicate pred
, LLVMValueRef src0
,
209 src0
= ac_to_float(ctx
, src0
);
210 src1
= ac_to_float(ctx
, src1
);
211 result
= LLVMBuildFCmp(ctx
->builder
, pred
, src0
, src1
, "");
212 return LLVMBuildSelect(ctx
->builder
, result
,
213 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
217 static LLVMValueRef
emit_intrin_1f_param(struct ac_llvm_context
*ctx
,
219 LLVMTypeRef result_type
,
223 LLVMValueRef params
[] = {
224 ac_to_float(ctx
, src0
),
227 MAYBE_UNUSED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
228 ac_get_elem_bits(ctx
, result_type
));
229 assert(length
< sizeof(name
));
230 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 1, AC_FUNC_ATTR_READNONE
);
233 static LLVMValueRef
emit_intrin_2f_param(struct ac_llvm_context
*ctx
,
235 LLVMTypeRef result_type
,
236 LLVMValueRef src0
, LLVMValueRef src1
)
239 LLVMValueRef params
[] = {
240 ac_to_float(ctx
, src0
),
241 ac_to_float(ctx
, src1
),
244 MAYBE_UNUSED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
245 ac_get_elem_bits(ctx
, result_type
));
246 assert(length
< sizeof(name
));
247 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 2, AC_FUNC_ATTR_READNONE
);
250 static LLVMValueRef
emit_intrin_3f_param(struct ac_llvm_context
*ctx
,
252 LLVMTypeRef result_type
,
253 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
256 LLVMValueRef params
[] = {
257 ac_to_float(ctx
, src0
),
258 ac_to_float(ctx
, src1
),
259 ac_to_float(ctx
, src2
),
262 MAYBE_UNUSED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
263 ac_get_elem_bits(ctx
, result_type
));
264 assert(length
< sizeof(name
));
265 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 3, AC_FUNC_ATTR_READNONE
);
268 static LLVMValueRef
emit_bcsel(struct ac_llvm_context
*ctx
,
269 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
271 assert(LLVMGetTypeKind(LLVMTypeOf(src0
)) != LLVMVectorTypeKind
);
273 LLVMValueRef v
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
,
275 return LLVMBuildSelect(ctx
->builder
, v
,
276 ac_to_integer_or_pointer(ctx
, src1
),
277 ac_to_integer_or_pointer(ctx
, src2
), "");
280 static LLVMValueRef
emit_minmax_int(struct ac_llvm_context
*ctx
,
281 LLVMIntPredicate pred
,
282 LLVMValueRef src0
, LLVMValueRef src1
)
284 return LLVMBuildSelect(ctx
->builder
,
285 LLVMBuildICmp(ctx
->builder
, pred
, src0
, src1
, ""),
290 static LLVMValueRef
emit_iabs(struct ac_llvm_context
*ctx
,
293 return emit_minmax_int(ctx
, LLVMIntSGT
, src0
,
294 LLVMBuildNeg(ctx
->builder
, src0
, ""));
297 static LLVMValueRef
emit_uint_carry(struct ac_llvm_context
*ctx
,
299 LLVMValueRef src0
, LLVMValueRef src1
)
301 LLVMTypeRef ret_type
;
302 LLVMTypeRef types
[] = { ctx
->i32
, ctx
->i1
};
304 LLVMValueRef params
[] = { src0
, src1
};
305 ret_type
= LLVMStructTypeInContext(ctx
->context
, types
,
308 res
= ac_build_intrinsic(ctx
, intrin
, ret_type
,
309 params
, 2, AC_FUNC_ATTR_READNONE
);
311 res
= LLVMBuildExtractValue(ctx
->builder
, res
, 1, "");
312 res
= LLVMBuildZExt(ctx
->builder
, res
, ctx
->i32
, "");
316 static LLVMValueRef
emit_b2f(struct ac_llvm_context
*ctx
,
320 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
,
321 LLVMBuildBitCast(ctx
->builder
, LLVMConstReal(ctx
->f32
, 1.0), ctx
->i32
, ""),
323 result
= LLVMBuildBitCast(ctx
->builder
, result
, ctx
->f32
, "");
328 return LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f64
, "");
331 static LLVMValueRef
emit_f2b(struct ac_llvm_context
*ctx
,
334 src0
= ac_to_float(ctx
, src0
);
335 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
336 return LLVMBuildSExt(ctx
->builder
,
337 LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
, src0
, zero
, ""),
341 static LLVMValueRef
emit_b2i(struct ac_llvm_context
*ctx
,
345 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
, ctx
->i32_1
, "");
350 return LLVMBuildZExt(ctx
->builder
, result
, ctx
->i64
, "");
353 static LLVMValueRef
emit_i2b(struct ac_llvm_context
*ctx
,
356 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
357 return LLVMBuildSExt(ctx
->builder
,
358 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
, zero
, ""),
362 static LLVMValueRef
emit_f2f16(struct ac_llvm_context
*ctx
,
366 LLVMValueRef cond
= NULL
;
368 src0
= ac_to_float(ctx
, src0
);
369 result
= LLVMBuildFPTrunc(ctx
->builder
, src0
, ctx
->f16
, "");
371 if (ctx
->chip_class
>= VI
) {
372 LLVMValueRef args
[2];
373 /* Check if the result is a denormal - and flush to 0 if so. */
375 args
[1] = LLVMConstInt(ctx
->i32
, N_SUBNORMAL
| P_SUBNORMAL
, false);
376 cond
= ac_build_intrinsic(ctx
, "llvm.amdgcn.class.f16", ctx
->i1
, args
, 2, AC_FUNC_ATTR_READNONE
);
379 /* need to convert back up to f32 */
380 result
= LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f32
, "");
382 if (ctx
->chip_class
>= VI
)
383 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
386 /* 0x38800000 is smallest half float value (2^-14) in 32-bit float,
387 * so compare the result and flush to 0 if it's smaller.
389 LLVMValueRef temp
, cond2
;
390 temp
= emit_intrin_1f_param(ctx
, "llvm.fabs", ctx
->f32
, result
);
391 cond
= LLVMBuildFCmp(ctx
->builder
, LLVMRealUGT
,
392 LLVMBuildBitCast(ctx
->builder
, LLVMConstInt(ctx
->i32
, 0x38800000, false), ctx
->f32
, ""),
394 cond2
= LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
,
395 temp
, ctx
->f32_0
, "");
396 cond
= LLVMBuildAnd(ctx
->builder
, cond
, cond2
, "");
397 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
402 static LLVMValueRef
emit_umul_high(struct ac_llvm_context
*ctx
,
403 LLVMValueRef src0
, LLVMValueRef src1
)
405 LLVMValueRef dst64
, result
;
406 src0
= LLVMBuildZExt(ctx
->builder
, src0
, ctx
->i64
, "");
407 src1
= LLVMBuildZExt(ctx
->builder
, src1
, ctx
->i64
, "");
409 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
410 dst64
= LLVMBuildLShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
411 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
415 static LLVMValueRef
emit_imul_high(struct ac_llvm_context
*ctx
,
416 LLVMValueRef src0
, LLVMValueRef src1
)
418 LLVMValueRef dst64
, result
;
419 src0
= LLVMBuildSExt(ctx
->builder
, src0
, ctx
->i64
, "");
420 src1
= LLVMBuildSExt(ctx
->builder
, src1
, ctx
->i64
, "");
422 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
423 dst64
= LLVMBuildAShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
424 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
428 static LLVMValueRef
emit_bitfield_extract(struct ac_llvm_context
*ctx
,
430 const LLVMValueRef srcs
[3])
434 if (HAVE_LLVM
>= 0x0800) {
435 LLVMValueRef icond
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, srcs
[2], LLVMConstInt(ctx
->i32
, 32, false), "");
436 result
= ac_build_bfe(ctx
, srcs
[0], srcs
[1], srcs
[2], is_signed
);
437 result
= LLVMBuildSelect(ctx
->builder
, icond
, srcs
[0], result
, "");
439 /* FIXME: LLVM 7+ returns incorrect result when count is 0.
440 * https://bugs.freedesktop.org/show_bug.cgi?id=107276
442 LLVMValueRef zero
= ctx
->i32_0
;
443 LLVMValueRef icond1
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, srcs
[2], LLVMConstInt(ctx
->i32
, 32, false), "");
444 LLVMValueRef icond2
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, srcs
[2], zero
, "");
446 result
= ac_build_bfe(ctx
, srcs
[0], srcs
[1], srcs
[2], is_signed
);
447 result
= LLVMBuildSelect(ctx
->builder
, icond1
, srcs
[0], result
, "");
448 result
= LLVMBuildSelect(ctx
->builder
, icond2
, zero
, result
, "");
454 static LLVMValueRef
emit_bitfield_insert(struct ac_llvm_context
*ctx
,
455 LLVMValueRef src0
, LLVMValueRef src1
,
456 LLVMValueRef src2
, LLVMValueRef src3
)
458 LLVMValueRef bfi_args
[3], result
;
460 bfi_args
[0] = LLVMBuildShl(ctx
->builder
,
461 LLVMBuildSub(ctx
->builder
,
462 LLVMBuildShl(ctx
->builder
,
467 bfi_args
[1] = LLVMBuildShl(ctx
->builder
, src1
, src2
, "");
470 LLVMValueRef icond
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, src3
, LLVMConstInt(ctx
->i32
, 32, false), "");
473 * (arg0 & arg1) | (~arg0 & arg2) = arg2 ^ (arg0 & (arg1 ^ arg2)
474 * Use the right-hand side, which the LLVM backend can convert to V_BFI.
476 result
= LLVMBuildXor(ctx
->builder
, bfi_args
[2],
477 LLVMBuildAnd(ctx
->builder
, bfi_args
[0],
478 LLVMBuildXor(ctx
->builder
, bfi_args
[1], bfi_args
[2], ""), ""), "");
480 result
= LLVMBuildSelect(ctx
->builder
, icond
, src1
, result
, "");
484 static LLVMValueRef
emit_pack_half_2x16(struct ac_llvm_context
*ctx
,
487 LLVMValueRef comp
[2];
489 src0
= ac_to_float(ctx
, src0
);
490 comp
[0] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_0
, "");
491 comp
[1] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_1
, "");
493 return LLVMBuildBitCast(ctx
->builder
, ac_build_cvt_pkrtz_f16(ctx
, comp
),
497 static LLVMValueRef
emit_unpack_half_2x16(struct ac_llvm_context
*ctx
,
500 LLVMValueRef const16
= LLVMConstInt(ctx
->i32
, 16, false);
501 LLVMValueRef temps
[2], val
;
504 for (i
= 0; i
< 2; i
++) {
505 val
= i
== 1 ? LLVMBuildLShr(ctx
->builder
, src0
, const16
, "") : src0
;
506 val
= LLVMBuildTrunc(ctx
->builder
, val
, ctx
->i16
, "");
507 val
= LLVMBuildBitCast(ctx
->builder
, val
, ctx
->f16
, "");
508 temps
[i
] = LLVMBuildFPExt(ctx
->builder
, val
, ctx
->f32
, "");
510 return ac_build_gather_values(ctx
, temps
, 2);
513 static LLVMValueRef
emit_ddxy(struct ac_nir_context
*ctx
,
521 if (op
== nir_op_fddx_fine
)
522 mask
= AC_TID_MASK_LEFT
;
523 else if (op
== nir_op_fddy_fine
)
524 mask
= AC_TID_MASK_TOP
;
526 mask
= AC_TID_MASK_TOP_LEFT
;
528 /* for DDX we want to next X pixel, DDY next Y pixel. */
529 if (op
== nir_op_fddx_fine
||
530 op
== nir_op_fddx_coarse
||
536 result
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, src0
);
541 * this takes an I,J coordinate pair,
542 * and works out the X and Y derivatives.
543 * it returns DDX(I), DDX(J), DDY(I), DDY(J).
545 static LLVMValueRef
emit_ddxy_interp(
546 struct ac_nir_context
*ctx
,
547 LLVMValueRef interp_ij
)
549 LLVMValueRef result
[4], a
;
552 for (i
= 0; i
< 2; i
++) {
553 a
= LLVMBuildExtractElement(ctx
->ac
.builder
, interp_ij
,
554 LLVMConstInt(ctx
->ac
.i32
, i
, false), "");
555 result
[i
] = emit_ddxy(ctx
, nir_op_fddx
, a
);
556 result
[2+i
] = emit_ddxy(ctx
, nir_op_fddy
, a
);
558 return ac_build_gather_values(&ctx
->ac
, result
, 4);
561 static void visit_alu(struct ac_nir_context
*ctx
, const nir_alu_instr
*instr
)
563 LLVMValueRef src
[4], result
= NULL
;
564 unsigned num_components
= instr
->dest
.dest
.ssa
.num_components
;
565 unsigned src_components
;
566 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.dest
.ssa
);
568 assert(nir_op_infos
[instr
->op
].num_inputs
<= ARRAY_SIZE(src
));
575 case nir_op_pack_half_2x16
:
578 case nir_op_unpack_half_2x16
:
581 case nir_op_cube_face_coord
:
582 case nir_op_cube_face_index
:
586 src_components
= num_components
;
589 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
590 src
[i
] = get_alu_src(ctx
, instr
->src
[i
], src_components
);
598 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
599 result
= LLVMBuildFNeg(ctx
->ac
.builder
, src
[0], "");
602 result
= LLVMBuildNeg(ctx
->ac
.builder
, src
[0], "");
605 result
= LLVMBuildNot(ctx
->ac
.builder
, src
[0], "");
608 result
= LLVMBuildAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
611 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
612 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
613 result
= LLVMBuildFAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
616 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
617 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
618 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], src
[1], "");
621 result
= LLVMBuildSub(ctx
->ac
.builder
, src
[0], src
[1], "");
624 result
= LLVMBuildMul(ctx
->ac
.builder
, src
[0], src
[1], "");
627 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
630 result
= LLVMBuildURem(ctx
->ac
.builder
, src
[0], src
[1], "");
633 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
634 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
635 result
= ac_build_fdiv(&ctx
->ac
, src
[0], src
[1]);
636 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
637 ac_to_float_type(&ctx
->ac
, def_type
), result
);
638 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[1] , result
, "");
639 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], result
, "");
642 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
643 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
644 result
= LLVMBuildFRem(ctx
->ac
.builder
, src
[0], src
[1], "");
647 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
650 result
= LLVMBuildSDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
653 result
= LLVMBuildUDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
656 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
657 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
658 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[0], src
[1], "");
661 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
662 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(src
[0]), 1.0), src
[0]);
665 result
= LLVMBuildAnd(ctx
->ac
.builder
, src
[0], src
[1], "");
668 result
= LLVMBuildOr(ctx
->ac
.builder
, src
[0], src
[1], "");
671 result
= LLVMBuildXor(ctx
->ac
.builder
, src
[0], src
[1], "");
674 result
= LLVMBuildShl(ctx
->ac
.builder
, src
[0],
675 LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
676 LLVMTypeOf(src
[0]), ""),
680 result
= LLVMBuildAShr(ctx
->ac
.builder
, src
[0],
681 LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
682 LLVMTypeOf(src
[0]), ""),
686 result
= LLVMBuildLShr(ctx
->ac
.builder
, src
[0],
687 LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
688 LLVMTypeOf(src
[0]), ""),
692 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
695 result
= emit_int_cmp(&ctx
->ac
, LLVMIntNE
, src
[0], src
[1]);
698 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, src
[0], src
[1]);
701 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSGE
, src
[0], src
[1]);
704 result
= emit_int_cmp(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
707 result
= emit_int_cmp(&ctx
->ac
, LLVMIntUGE
, src
[0], src
[1]);
710 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOEQ
, src
[0], src
[1]);
713 result
= emit_float_cmp(&ctx
->ac
, LLVMRealUNE
, src
[0], src
[1]);
716 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOLT
, src
[0], src
[1]);
719 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOGE
, src
[0], src
[1]);
722 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.fabs",
723 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
726 result
= emit_iabs(&ctx
->ac
, src
[0]);
729 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSGT
, src
[0], src
[1]);
732 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
735 result
= emit_minmax_int(&ctx
->ac
, LLVMIntUGT
, src
[0], src
[1]);
738 result
= emit_minmax_int(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
741 result
= ac_build_isign(&ctx
->ac
, src
[0],
742 instr
->dest
.dest
.ssa
.bit_size
);
745 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
746 result
= ac_build_fsign(&ctx
->ac
, src
[0],
747 instr
->dest
.dest
.ssa
.bit_size
);
750 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
751 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
754 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.trunc",
755 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
758 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.ceil",
759 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
761 case nir_op_fround_even
:
762 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.rint",
763 ac_to_float_type(&ctx
->ac
, def_type
),src
[0]);
766 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
767 result
= ac_build_fract(&ctx
->ac
, src
[0],
768 instr
->dest
.dest
.ssa
.bit_size
);
771 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sin",
772 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
775 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.cos",
776 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
779 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
780 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
783 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.exp2",
784 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
787 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.log2",
788 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
791 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
792 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
793 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(result
), 1.0), result
);
795 case nir_op_frexp_exp
:
796 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
797 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.frexp.exp.i32.f64",
798 ctx
->ac
.i32
, src
, 1, AC_FUNC_ATTR_READNONE
);
801 case nir_op_frexp_sig
:
802 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
803 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.frexp.mant.f64",
804 ctx
->ac
.f64
, src
, 1, AC_FUNC_ATTR_READNONE
);
807 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.pow",
808 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
811 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
812 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
813 if (ctx
->ac
.chip_class
< GFX9
&&
814 instr
->dest
.dest
.ssa
.bit_size
== 32) {
815 /* Only pre-GFX9 chips do not flush denorms. */
816 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.canonicalize",
817 ac_to_float_type(&ctx
->ac
, def_type
),
822 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
823 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
824 if (ctx
->ac
.chip_class
< GFX9
&&
825 instr
->dest
.dest
.ssa
.bit_size
== 32) {
826 /* Only pre-GFX9 chips do not flush denorms. */
827 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.canonicalize",
828 ac_to_float_type(&ctx
->ac
, def_type
),
833 result
= emit_intrin_3f_param(&ctx
->ac
, "llvm.fmuladd",
834 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1], src
[2]);
837 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
838 if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 32)
839 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f32", ctx
->ac
.f32
, src
, 2, AC_FUNC_ATTR_READNONE
);
840 else if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 16)
841 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f16", ctx
->ac
.f16
, src
, 2, AC_FUNC_ATTR_READNONE
);
843 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f64", ctx
->ac
.f64
, src
, 2, AC_FUNC_ATTR_READNONE
);
845 case nir_op_ibitfield_extract
:
846 result
= emit_bitfield_extract(&ctx
->ac
, true, src
);
848 case nir_op_ubitfield_extract
:
849 result
= emit_bitfield_extract(&ctx
->ac
, false, src
);
851 case nir_op_bitfield_insert
:
852 result
= emit_bitfield_insert(&ctx
->ac
, src
[0], src
[1], src
[2], src
[3]);
854 case nir_op_bitfield_reverse
:
855 result
= ac_build_bitfield_reverse(&ctx
->ac
, src
[0]);
857 case nir_op_bit_count
:
858 result
= ac_build_bit_count(&ctx
->ac
, src
[0]);
863 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
864 src
[i
] = ac_to_integer(&ctx
->ac
, src
[i
]);
865 result
= ac_build_gather_values(&ctx
->ac
, src
, num_components
);
870 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
871 result
= LLVMBuildFPToSI(ctx
->ac
.builder
, src
[0], def_type
, "");
876 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
877 result
= LLVMBuildFPToUI(ctx
->ac
.builder
, src
[0], def_type
, "");
882 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
883 result
= LLVMBuildSIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
888 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
889 result
= LLVMBuildUIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
891 case nir_op_f2f16_rtz
:
892 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
893 if (LLVMTypeOf(src
[0]) == ctx
->ac
.f64
)
894 src
[0] = LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ctx
->ac
.f32
, "");
895 LLVMValueRef param
[2] = { src
[0], ctx
->ac
.f32_0
};
896 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, param
);
897 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
899 case nir_op_f2f16_rtne
:
903 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
904 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
905 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
907 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
912 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
913 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
914 result
= LLVMBuildZExt(ctx
->ac
.builder
, src
[0], def_type
, "");
916 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
921 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
922 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
923 result
= LLVMBuildSExt(ctx
->ac
.builder
, src
[0], def_type
, "");
925 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
928 result
= emit_bcsel(&ctx
->ac
, src
[0], src
[1], src
[2]);
930 case nir_op_find_lsb
:
931 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
932 result
= ac_find_lsb(&ctx
->ac
, ctx
->ac
.i32
, src
[0]);
934 case nir_op_ufind_msb
:
935 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
936 result
= ac_build_umsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
938 case nir_op_ifind_msb
:
939 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
940 result
= ac_build_imsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
942 case nir_op_uadd_carry
:
943 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
944 src
[1] = ac_to_integer(&ctx
->ac
, src
[1]);
945 result
= emit_uint_carry(&ctx
->ac
, "llvm.uadd.with.overflow.i32", src
[0], src
[1]);
947 case nir_op_usub_borrow
:
948 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
949 src
[1] = ac_to_integer(&ctx
->ac
, src
[1]);
950 result
= emit_uint_carry(&ctx
->ac
, "llvm.usub.with.overflow.i32", src
[0], src
[1]);
955 result
= emit_b2f(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
958 result
= emit_f2b(&ctx
->ac
, src
[0]);
963 result
= emit_b2i(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
966 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
967 result
= emit_i2b(&ctx
->ac
, src
[0]);
969 case nir_op_fquantize2f16
:
970 result
= emit_f2f16(&ctx
->ac
, src
[0]);
972 case nir_op_umul_high
:
973 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
974 src
[1] = ac_to_integer(&ctx
->ac
, src
[1]);
975 result
= emit_umul_high(&ctx
->ac
, src
[0], src
[1]);
977 case nir_op_imul_high
:
978 src
[0] = ac_to_integer(&ctx
->ac
, src
[0]);
979 src
[1] = ac_to_integer(&ctx
->ac
, src
[1]);
980 result
= emit_imul_high(&ctx
->ac
, src
[0], src
[1]);
982 case nir_op_pack_half_2x16
:
983 result
= emit_pack_half_2x16(&ctx
->ac
, src
[0]);
985 case nir_op_unpack_half_2x16
:
986 result
= emit_unpack_half_2x16(&ctx
->ac
, src
[0]);
990 case nir_op_fddx_fine
:
991 case nir_op_fddy_fine
:
992 case nir_op_fddx_coarse
:
993 case nir_op_fddy_coarse
:
994 result
= emit_ddxy(ctx
, instr
->op
, src
[0]);
997 case nir_op_unpack_64_2x32_split_x
: {
998 assert(ac_get_llvm_num_components(src
[0]) == 1);
999 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1002 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1007 case nir_op_unpack_64_2x32_split_y
: {
1008 assert(ac_get_llvm_num_components(src
[0]) == 1);
1009 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1012 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1017 case nir_op_pack_64_2x32_split
: {
1018 LLVMValueRef tmp
= LLVMGetUndef(ctx
->ac
.v2i32
);
1019 tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
1020 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i64
, "");
1024 case nir_op_cube_face_coord
: {
1025 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1026 LLVMValueRef results
[2];
1028 for (unsigned chan
= 0; chan
< 3; chan
++)
1029 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1030 results
[0] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubetc",
1031 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1032 results
[1] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubesc",
1033 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1034 result
= ac_build_gather_values(&ctx
->ac
, results
, 2);
1038 case nir_op_cube_face_index
: {
1039 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1041 for (unsigned chan
= 0; chan
< 3; chan
++)
1042 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1043 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubeid",
1044 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1049 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1050 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1051 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1052 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1055 result
= emit_minmax_int(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
1056 result
= emit_minmax_int(&ctx
->ac
, LLVMIntULT
, result
, src
[2]);
1059 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
1060 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSLT
, result
, src
[2]);
1063 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1064 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1065 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1066 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1069 result
= emit_minmax_int(&ctx
->ac
, LLVMIntUGT
, src
[0], src
[1]);
1070 result
= emit_minmax_int(&ctx
->ac
, LLVMIntUGT
, result
, src
[2]);
1073 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSGT
, src
[0], src
[1]);
1074 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSGT
, result
, src
[2]);
1076 case nir_op_fmed3
: {
1077 LLVMValueRef tmp1
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1078 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1079 LLVMValueRef tmp2
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1080 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1081 tmp2
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1082 ac_to_float_type(&ctx
->ac
, def_type
), tmp2
, src
[2]);
1083 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1084 ac_to_float_type(&ctx
->ac
, def_type
), tmp1
, tmp2
);
1087 case nir_op_imed3
: {
1088 LLVMValueRef tmp1
= emit_minmax_int(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
1089 LLVMValueRef tmp2
= emit_minmax_int(&ctx
->ac
, LLVMIntSGT
, src
[0], src
[1]);
1090 tmp2
= emit_minmax_int(&ctx
->ac
, LLVMIntSLT
, tmp2
, src
[2]);
1091 result
= emit_minmax_int(&ctx
->ac
, LLVMIntSGT
, tmp1
, tmp2
);
1094 case nir_op_umed3
: {
1095 LLVMValueRef tmp1
= emit_minmax_int(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
1096 LLVMValueRef tmp2
= emit_minmax_int(&ctx
->ac
, LLVMIntUGT
, src
[0], src
[1]);
1097 tmp2
= emit_minmax_int(&ctx
->ac
, LLVMIntULT
, tmp2
, src
[2]);
1098 result
= emit_minmax_int(&ctx
->ac
, LLVMIntUGT
, tmp1
, tmp2
);
1103 fprintf(stderr
, "Unknown NIR alu instr: ");
1104 nir_print_instr(&instr
->instr
, stderr
);
1105 fprintf(stderr
, "\n");
1110 assert(instr
->dest
.dest
.is_ssa
);
1111 result
= ac_to_integer_or_pointer(&ctx
->ac
, result
);
1112 ctx
->ssa_defs
[instr
->dest
.dest
.ssa
.index
] = result
;
1116 static void visit_load_const(struct ac_nir_context
*ctx
,
1117 const nir_load_const_instr
*instr
)
1119 LLVMValueRef values
[4], value
= NULL
;
1120 LLVMTypeRef element_type
=
1121 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
1123 for (unsigned i
= 0; i
< instr
->def
.num_components
; ++i
) {
1124 switch (instr
->def
.bit_size
) {
1126 values
[i
] = LLVMConstInt(element_type
,
1127 instr
->value
.u8
[i
], false);
1130 values
[i
] = LLVMConstInt(element_type
,
1131 instr
->value
.u16
[i
], false);
1134 values
[i
] = LLVMConstInt(element_type
,
1135 instr
->value
.u32
[i
], false);
1138 values
[i
] = LLVMConstInt(element_type
,
1139 instr
->value
.u64
[i
], false);
1143 "unsupported nir load_const bit_size: %d\n",
1144 instr
->def
.bit_size
);
1148 if (instr
->def
.num_components
> 1) {
1149 value
= LLVMConstVector(values
, instr
->def
.num_components
);
1153 ctx
->ssa_defs
[instr
->def
.index
] = value
;
1157 get_buffer_size(struct ac_nir_context
*ctx
, LLVMValueRef descriptor
, bool in_elements
)
1160 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1161 LLVMConstInt(ctx
->ac
.i32
, 2, false), "");
1164 if (ctx
->ac
.chip_class
== VI
&& in_elements
) {
1165 /* On VI, the descriptor contains the size in bytes,
1166 * but TXQ must return the size in elements.
1167 * The stride is always non-zero for resources using TXQ.
1169 LLVMValueRef stride
=
1170 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1172 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
,
1173 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
1174 stride
= LLVMBuildAnd(ctx
->ac
.builder
, stride
,
1175 LLVMConstInt(ctx
->ac
.i32
, 0x3fff, false), "");
1177 size
= LLVMBuildUDiv(ctx
->ac
.builder
, size
, stride
, "");
1182 static LLVMValueRef
lower_gather4_integer(struct ac_llvm_context
*ctx
,
1184 struct ac_image_args
*args
,
1185 const nir_tex_instr
*instr
)
1187 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1188 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1189 LLVMValueRef half_texel
[2];
1190 LLVMValueRef compare_cube_wa
= NULL
;
1191 LLVMValueRef result
;
1195 struct ac_image_args txq_args
= { 0 };
1197 txq_args
.dim
= get_ac_sampler_dim(ctx
, instr
->sampler_dim
, instr
->is_array
);
1198 txq_args
.opcode
= ac_image_get_resinfo
;
1199 txq_args
.dmask
= 0xf;
1200 txq_args
.lod
= ctx
->i32_0
;
1201 txq_args
.resource
= args
->resource
;
1202 txq_args
.attributes
= AC_FUNC_ATTR_READNONE
;
1203 LLVMValueRef size
= ac_build_image_opcode(ctx
, &txq_args
);
1205 for (unsigned c
= 0; c
< 2; c
++) {
1206 half_texel
[c
] = LLVMBuildExtractElement(ctx
->builder
, size
,
1207 LLVMConstInt(ctx
->i32
, c
, false), "");
1208 half_texel
[c
] = LLVMBuildUIToFP(ctx
->builder
, half_texel
[c
], ctx
->f32
, "");
1209 half_texel
[c
] = ac_build_fdiv(ctx
, ctx
->f32_1
, half_texel
[c
]);
1210 half_texel
[c
] = LLVMBuildFMul(ctx
->builder
, half_texel
[c
],
1211 LLVMConstReal(ctx
->f32
, -0.5), "");
1215 LLVMValueRef orig_coords
[2] = { args
->coords
[0], args
->coords
[1] };
1217 for (unsigned c
= 0; c
< 2; c
++) {
1219 tmp
= LLVMBuildBitCast(ctx
->builder
, args
->coords
[c
], ctx
->f32
, "");
1220 args
->coords
[c
] = LLVMBuildFAdd(ctx
->builder
, tmp
, half_texel
[c
], "");
1224 * Apparantly cube has issue with integer types that the workaround doesn't solve,
1225 * so this tests if the format is 8_8_8_8 and an integer type do an alternate
1226 * workaround by sampling using a scaled type and converting.
1227 * This is taken from amdgpu-pro shaders.
1229 /* NOTE this produces some ugly code compared to amdgpu-pro,
1230 * LLVM ends up dumping SGPRs into VGPRs to deal with the compare/select,
1231 * and then reads them back. -pro generates two selects,
1232 * one s_cmp for the descriptor rewriting
1233 * one v_cmp for the coordinate and result changes.
1235 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1236 LLVMValueRef tmp
, tmp2
;
1238 /* workaround 8/8/8/8 uint/sint cube gather bug */
1239 /* first detect it then change to a scaled read and f2i */
1240 tmp
= LLVMBuildExtractElement(ctx
->builder
, args
->resource
, ctx
->i32_1
, "");
1243 /* extract the DATA_FORMAT */
1244 tmp
= ac_build_bfe(ctx
, tmp
, LLVMConstInt(ctx
->i32
, 20, false),
1245 LLVMConstInt(ctx
->i32
, 6, false), false);
1247 /* is the DATA_FORMAT == 8_8_8_8 */
1248 compare_cube_wa
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, tmp
, LLVMConstInt(ctx
->i32
, V_008F14_IMG_DATA_FORMAT_8_8_8_8
, false), "");
1250 if (stype
== GLSL_TYPE_UINT
)
1251 /* Create a NUM FORMAT - 0x2 or 0x4 - USCALED or UINT */
1252 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, LLVMConstInt(ctx
->i32
, 0x8000000, false),
1253 LLVMConstInt(ctx
->i32
, 0x10000000, false), "");
1255 /* Create a NUM FORMAT - 0x3 or 0x5 - SSCALED or SINT */
1256 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, LLVMConstInt(ctx
->i32
, 0xc000000, false),
1257 LLVMConstInt(ctx
->i32
, 0x14000000, false), "");
1259 /* replace the NUM FORMAT in the descriptor */
1260 tmp2
= LLVMBuildAnd(ctx
->builder
, tmp2
, LLVMConstInt(ctx
->i32
, C_008F14_NUM_FORMAT_GFX6
, false), "");
1261 tmp2
= LLVMBuildOr(ctx
->builder
, tmp2
, tmp
, "");
1263 args
->resource
= LLVMBuildInsertElement(ctx
->builder
, args
->resource
, tmp2
, ctx
->i32_1
, "");
1265 /* don't modify the coordinates for this case */
1266 for (unsigned c
= 0; c
< 2; ++c
)
1267 args
->coords
[c
] = LLVMBuildSelect(
1268 ctx
->builder
, compare_cube_wa
,
1269 orig_coords
[c
], args
->coords
[c
], "");
1272 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1273 result
= ac_build_image_opcode(ctx
, args
);
1275 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1276 LLVMValueRef tmp
, tmp2
;
1278 /* if the cube workaround is in place, f2i the result. */
1279 for (unsigned c
= 0; c
< 4; c
++) {
1280 tmp
= LLVMBuildExtractElement(ctx
->builder
, result
, LLVMConstInt(ctx
->i32
, c
, false), "");
1281 if (stype
== GLSL_TYPE_UINT
)
1282 tmp2
= LLVMBuildFPToUI(ctx
->builder
, tmp
, ctx
->i32
, "");
1284 tmp2
= LLVMBuildFPToSI(ctx
->builder
, tmp
, ctx
->i32
, "");
1285 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->i32
, "");
1286 tmp2
= LLVMBuildBitCast(ctx
->builder
, tmp2
, ctx
->i32
, "");
1287 tmp
= LLVMBuildSelect(ctx
->builder
, compare_cube_wa
, tmp2
, tmp
, "");
1288 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f32
, "");
1289 result
= LLVMBuildInsertElement(ctx
->builder
, result
, tmp
, LLVMConstInt(ctx
->i32
, c
, false), "");
1295 static nir_deref_instr
*get_tex_texture_deref(const nir_tex_instr
*instr
)
1297 nir_deref_instr
*texture_deref_instr
= NULL
;
1299 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
1300 switch (instr
->src
[i
].src_type
) {
1301 case nir_tex_src_texture_deref
:
1302 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
1308 return texture_deref_instr
;
1311 static LLVMValueRef
build_tex_intrinsic(struct ac_nir_context
*ctx
,
1312 const nir_tex_instr
*instr
,
1313 struct ac_image_args
*args
)
1315 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
1316 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
1318 if (ctx
->abi
->gfx9_stride_size_workaround
) {
1319 return ac_build_buffer_load_format_gfx9_safe(&ctx
->ac
,
1323 util_last_bit(mask
),
1326 return ac_build_buffer_load_format(&ctx
->ac
,
1330 util_last_bit(mask
),
1335 args
->opcode
= ac_image_sample
;
1337 switch (instr
->op
) {
1339 case nir_texop_txf_ms
:
1340 case nir_texop_samples_identical
:
1341 args
->opcode
= args
->level_zero
||
1342 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
?
1343 ac_image_load
: ac_image_load_mip
;
1344 args
->level_zero
= false;
1347 case nir_texop_query_levels
:
1348 args
->opcode
= ac_image_get_resinfo
;
1350 args
->lod
= ctx
->ac
.i32_0
;
1351 args
->level_zero
= false;
1354 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1356 args
->level_zero
= true;
1360 args
->opcode
= ac_image_gather4
;
1361 args
->level_zero
= true;
1364 args
->opcode
= ac_image_get_lod
;
1370 if (instr
->op
== nir_texop_tg4
&& ctx
->ac
.chip_class
<= VI
) {
1371 nir_deref_instr
*texture_deref_instr
= get_tex_texture_deref(instr
);
1372 nir_variable
*var
= nir_deref_instr_get_variable(texture_deref_instr
);
1373 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1374 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1375 if (stype
== GLSL_TYPE_UINT
|| stype
== GLSL_TYPE_INT
) {
1376 return lower_gather4_integer(&ctx
->ac
, var
, args
, instr
);
1380 /* Fixup for GFX9 which allocates 1D textures as 2D. */
1381 if (instr
->op
== nir_texop_lod
&& ctx
->ac
.chip_class
>= GFX9
) {
1382 if ((args
->dim
== ac_image_2darray
||
1383 args
->dim
== ac_image_2d
) && !args
->coords
[1]) {
1384 args
->coords
[1] = ctx
->ac
.i32_0
;
1388 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1389 return ac_build_image_opcode(&ctx
->ac
, args
);
1392 static LLVMValueRef
visit_vulkan_resource_reindex(struct ac_nir_context
*ctx
,
1393 nir_intrinsic_instr
*instr
)
1395 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
1396 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
1398 LLVMValueRef result
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
1399 LLVMSetMetadata(result
, ctx
->ac
.uniform_md_kind
, ctx
->ac
.empty_md
);
1403 static LLVMValueRef
visit_load_push_constant(struct ac_nir_context
*ctx
,
1404 nir_intrinsic_instr
*instr
)
1406 LLVMValueRef ptr
, addr
;
1407 LLVMValueRef src0
= get_src(ctx
, instr
->src
[0]);
1408 unsigned index
= nir_intrinsic_base(instr
);
1410 addr
= LLVMConstInt(ctx
->ac
.i32
, index
, 0);
1411 addr
= LLVMBuildAdd(ctx
->ac
.builder
, addr
, src0
, "");
1413 /* Load constant values from user SGPRS when possible, otherwise
1414 * fallback to the default path that loads directly from memory.
1416 if (LLVMIsConstant(src0
) &&
1417 instr
->dest
.ssa
.bit_size
== 32) {
1418 unsigned count
= instr
->dest
.ssa
.num_components
;
1419 unsigned offset
= index
;
1421 offset
+= LLVMConstIntGetZExtValue(src0
);
1424 offset
-= ctx
->abi
->base_inline_push_consts
;
1426 if (offset
+ count
<= ctx
->abi
->num_inline_push_consts
) {
1427 return ac_build_gather_values(&ctx
->ac
,
1428 ctx
->abi
->inline_push_consts
+ offset
,
1433 ptr
= ac_build_gep0(&ctx
->ac
, ctx
->abi
->push_constants
, addr
);
1435 if (instr
->dest
.ssa
.bit_size
== 16) {
1436 unsigned load_dwords
= instr
->dest
.ssa
.num_components
/ 2 + 1;
1437 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt16TypeInContext(ctx
->ac
.context
), 2 * load_dwords
);
1438 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1439 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1440 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, vec_type
, "");
1441 LLVMValueRef cond
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, ctx
->ac
.i32_1
, "");
1442 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->ac
.i1
, "");
1443 LLVMValueRef mask
[] = { LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
1444 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
1445 LLVMConstInt(ctx
->ac
.i32
, 4, false)};
1446 LLVMValueRef swizzle_aligned
= LLVMConstVector(&mask
[0], instr
->dest
.ssa
.num_components
);
1447 LLVMValueRef swizzle_unaligned
= LLVMConstVector(&mask
[1], instr
->dest
.ssa
.num_components
);
1448 LLVMValueRef shuffle_aligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_aligned
, "");
1449 LLVMValueRef shuffle_unaligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_unaligned
, "");
1450 res
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, shuffle_unaligned
, shuffle_aligned
, "");
1451 return LLVMBuildBitCast(ctx
->ac
.builder
, res
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1454 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, get_def_type(ctx
, &instr
->dest
.ssa
));
1456 return LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1459 static LLVMValueRef
visit_get_buffer_size(struct ac_nir_context
*ctx
,
1460 const nir_intrinsic_instr
*instr
)
1462 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
1464 return get_buffer_size(ctx
, ctx
->abi
->load_ssbo(ctx
->abi
, index
, false), false);
1467 static uint32_t widen_mask(uint32_t mask
, unsigned multiplier
)
1469 uint32_t new_mask
= 0;
1470 for(unsigned i
= 0; i
< 32 && (1u << i
) <= mask
; ++i
)
1471 if (mask
& (1u << i
))
1472 new_mask
|= ((1u << multiplier
) - 1u) << (i
* multiplier
);
1476 static LLVMValueRef
extract_vector_range(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
1477 unsigned start
, unsigned count
)
1479 LLVMValueRef mask
[] = {
1480 ctx
->i32_0
, ctx
->i32_1
,
1481 LLVMConstInt(ctx
->i32
, 2, false), LLVMConstInt(ctx
->i32
, 3, false) };
1483 unsigned src_elements
= ac_get_llvm_num_components(src
);
1485 if (count
== src_elements
) {
1488 } else if (count
== 1) {
1489 assert(start
< src_elements
);
1490 return LLVMBuildExtractElement(ctx
->builder
, src
, mask
[start
], "");
1492 assert(start
+ count
<= src_elements
);
1494 LLVMValueRef swizzle
= LLVMConstVector(&mask
[start
], count
);
1495 return LLVMBuildShuffleVector(ctx
->builder
, src
, src
, swizzle
, "");
1499 static unsigned get_cache_policy(struct ac_nir_context
*ctx
,
1500 enum gl_access_qualifier access
,
1501 bool may_store_unaligned
,
1502 bool writeonly_memory
)
1504 unsigned cache_policy
= 0;
1506 /* SI has a TC L1 bug causing corruption of 8bit/16bit stores. All
1507 * store opcodes not aligned to a dword are affected. The only way to
1508 * get unaligned stores is through shader images.
1510 if (((may_store_unaligned
&& ctx
->ac
.chip_class
== SI
) ||
1511 /* If this is write-only, don't keep data in L1 to prevent
1512 * evicting L1 cache lines that may be needed by other
1516 access
& (ACCESS_COHERENT
| ACCESS_VOLATILE
))) {
1517 cache_policy
|= ac_glc
;
1520 return cache_policy
;
1523 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1524 nir_intrinsic_instr
*instr
)
1526 const char *store_name
;
1527 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1528 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1529 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1530 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1531 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
1532 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, writeonly_memory
);
1533 LLVMValueRef glc
= (cache_policy
& ac_glc
) ? ctx
->ac
.i1true
: ctx
->ac
.i1false
;
1535 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1536 get_src(ctx
, instr
->src
[1]), true);
1537 LLVMValueRef base_data
= ac_to_float(&ctx
->ac
, src_data
);
1538 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1539 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1543 LLVMValueRef data
, offset
;
1544 LLVMTypeRef data_type
;
1546 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1548 /* Due to an LLVM limitation, split 3-element writes
1549 * into a 2-element and a 1-element write. */
1551 writemask
|= 1 << (start
+ 2);
1554 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1556 /* we can only store 4 DWords at the same time.
1557 * can only happen for 64 Bit vectors. */
1558 if (num_bytes
> 16) {
1559 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1564 /* check alignment of 16 Bit stores */
1565 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1566 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1570 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1573 offset
= base_offset
;
1575 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1576 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1578 if (num_bytes
== 2) {
1579 store_name
= "llvm.amdgcn.tbuffer.store.i32";
1580 data_type
= ctx
->ac
.i32
;
1581 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, ctx
->ac
.i16
, "");
1582 data
= LLVMBuildZExt(ctx
->ac
.builder
, data
, data_type
, "");
1583 LLVMValueRef tbuffer_params
[] = {
1586 ctx
->ac
.i32_0
, /* vindex */
1587 offset
, /* voffset */
1590 LLVMConstInt(ctx
->ac
.i32
, 2, false), // dfmt (= 16bit)
1591 LLVMConstInt(ctx
->ac
.i32
, 4, false), // nfmt (= uint)
1595 ac_build_intrinsic(&ctx
->ac
, store_name
,
1596 ctx
->ac
.voidt
, tbuffer_params
, 10, 0);
1598 switch (num_bytes
) {
1599 case 16: /* v4f32 */
1600 store_name
= "llvm.amdgcn.buffer.store.v4f32";
1601 data_type
= ctx
->ac
.v4f32
;
1604 store_name
= "llvm.amdgcn.buffer.store.v2f32";
1605 data_type
= ctx
->ac
.v2f32
;
1608 store_name
= "llvm.amdgcn.buffer.store.f32";
1609 data_type
= ctx
->ac
.f32
;
1612 unreachable("Malformed vector store.");
1614 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1615 LLVMValueRef params
[] = {
1618 ctx
->ac
.i32_0
, /* vindex */
1621 ctx
->ac
.i1false
, /* slc */
1623 ac_build_intrinsic(&ctx
->ac
, store_name
,
1624 ctx
->ac
.voidt
, params
, 6, 0);
1629 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1630 const nir_intrinsic_instr
*instr
)
1633 LLVMValueRef params
[6];
1636 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1637 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1639 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1640 params
[arg_count
++] = ctx
->abi
->load_ssbo(ctx
->abi
,
1641 get_src(ctx
, instr
->src
[0]),
1643 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1644 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1645 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1647 switch (instr
->intrinsic
) {
1648 case nir_intrinsic_ssbo_atomic_add
:
1649 name
= "llvm.amdgcn.buffer.atomic.add";
1651 case nir_intrinsic_ssbo_atomic_imin
:
1652 name
= "llvm.amdgcn.buffer.atomic.smin";
1654 case nir_intrinsic_ssbo_atomic_umin
:
1655 name
= "llvm.amdgcn.buffer.atomic.umin";
1657 case nir_intrinsic_ssbo_atomic_imax
:
1658 name
= "llvm.amdgcn.buffer.atomic.smax";
1660 case nir_intrinsic_ssbo_atomic_umax
:
1661 name
= "llvm.amdgcn.buffer.atomic.umax";
1663 case nir_intrinsic_ssbo_atomic_and
:
1664 name
= "llvm.amdgcn.buffer.atomic.and";
1666 case nir_intrinsic_ssbo_atomic_or
:
1667 name
= "llvm.amdgcn.buffer.atomic.or";
1669 case nir_intrinsic_ssbo_atomic_xor
:
1670 name
= "llvm.amdgcn.buffer.atomic.xor";
1672 case nir_intrinsic_ssbo_atomic_exchange
:
1673 name
= "llvm.amdgcn.buffer.atomic.swap";
1675 case nir_intrinsic_ssbo_atomic_comp_swap
:
1676 name
= "llvm.amdgcn.buffer.atomic.cmpswap";
1682 return ac_build_intrinsic(&ctx
->ac
, name
, ctx
->ac
.i32
, params
, arg_count
, 0);
1685 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
1686 const nir_intrinsic_instr
*instr
)
1688 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1689 int num_components
= instr
->num_components
;
1690 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1691 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, false);
1692 LLVMValueRef glc
= (cache_policy
& ac_glc
) ? ctx
->ac
.i1true
: ctx
->ac
.i1false
;
1694 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1695 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1696 get_src(ctx
, instr
->src
[0]), false);
1697 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
1699 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1700 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
1702 LLVMValueRef results
[4];
1703 for (int i
= 0; i
< num_components
;) {
1704 int num_elems
= num_components
- i
;
1705 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
1707 if (num_elems
* elem_size_bytes
> 16)
1708 num_elems
= 16 / elem_size_bytes
;
1709 int load_bytes
= num_elems
* elem_size_bytes
;
1711 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
1714 if (load_bytes
== 2) {
1715 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
1720 cache_policy
& ac_glc
);
1722 const char *load_name
;
1723 LLVMTypeRef data_type
;
1724 switch (load_bytes
) {
1727 load_name
= "llvm.amdgcn.buffer.load.v4f32";
1728 data_type
= ctx
->ac
.v4f32
;
1732 load_name
= "llvm.amdgcn.buffer.load.v2f32";
1733 data_type
= ctx
->ac
.v2f32
;
1736 load_name
= "llvm.amdgcn.buffer.load.f32";
1737 data_type
= ctx
->ac
.f32
;
1740 unreachable("Malformed load buffer.");
1742 LLVMValueRef params
[] = {
1745 LLVMBuildAdd(ctx
->ac
.builder
, offset
, immoffset
, ""),
1749 ret
= ac_build_intrinsic(&ctx
->ac
, load_name
, data_type
, params
, 5, 0);
1752 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
1753 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
1754 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
1756 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
1757 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
1759 for (unsigned j
= 0; j
< num_elems
; j
++) {
1760 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
1765 return ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1768 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
1769 const nir_intrinsic_instr
*instr
)
1772 LLVMValueRef rsrc
= get_src(ctx
, instr
->src
[0]);
1773 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1774 int num_components
= instr
->num_components
;
1776 if (ctx
->abi
->load_ubo
)
1777 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
1779 if (instr
->dest
.ssa
.bit_size
== 64)
1780 num_components
*= 2;
1782 if (instr
->dest
.ssa
.bit_size
== 16) {
1783 LLVMValueRef results
[num_components
];
1784 for (unsigned i
= 0; i
< num_components
; ++i
) {
1785 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
1789 LLVMConstInt(ctx
->ac
.i32
, 2 * i
, 0),
1792 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1794 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
1795 NULL
, 0, false, false, true, true);
1797 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
1800 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
1801 get_def_type(ctx
, &instr
->dest
.ssa
), "");
1805 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
1806 bool vs_in
, unsigned *vertex_index_out
,
1807 LLVMValueRef
*vertex_index_ref
,
1808 unsigned *const_out
, LLVMValueRef
*indir_out
)
1810 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
1811 nir_deref_path path
;
1812 unsigned idx_lvl
= 1;
1814 nir_deref_path_init(&path
, instr
, NULL
);
1816 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
1817 if (vertex_index_ref
) {
1818 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
1819 if (vertex_index_out
)
1820 *vertex_index_out
= 0;
1822 nir_const_value
*v
= nir_src_as_const_value(path
.path
[idx_lvl
]->arr
.index
);
1824 *vertex_index_out
= v
->u32
[0];
1829 uint32_t const_offset
= 0;
1830 LLVMValueRef offset
= NULL
;
1832 if (var
->data
.compact
) {
1833 assert(instr
->deref_type
== nir_deref_type_array
);
1834 nir_const_value
*v
= nir_src_as_const_value(instr
->arr
.index
);
1836 const_offset
= v
->u32
[0];
1840 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
1841 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
1842 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
1843 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
1845 for (unsigned i
= 0; i
< index
; i
++) {
1846 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
1847 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
1849 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
1850 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
1851 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
1852 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
1854 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
1858 unreachable("Uhandled deref type in get_deref_instr_offset");
1862 nir_deref_path_finish(&path
);
1864 if (const_offset
&& offset
)
1865 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
1866 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
1869 *const_out
= const_offset
;
1870 *indir_out
= offset
;
1873 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
1874 nir_intrinsic_instr
*instr
,
1877 LLVMValueRef result
;
1878 LLVMValueRef vertex_index
= NULL
;
1879 LLVMValueRef indir_index
= NULL
;
1880 unsigned const_index
= 0;
1882 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
1884 unsigned location
= var
->data
.location
;
1885 unsigned driver_location
= var
->data
.driver_location
;
1886 const bool is_patch
= var
->data
.patch
;
1887 const bool is_compact
= var
->data
.compact
;
1889 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
1890 false, NULL
, is_patch
? NULL
: &vertex_index
,
1891 &const_index
, &indir_index
);
1893 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1895 LLVMTypeRef src_component_type
;
1896 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
1897 src_component_type
= LLVMGetElementType(dest_type
);
1899 src_component_type
= dest_type
;
1901 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
1902 vertex_index
, indir_index
,
1903 const_index
, location
, driver_location
,
1904 var
->data
.location_frac
,
1905 instr
->num_components
,
1906 is_patch
, is_compact
, load_inputs
);
1907 if (instr
->dest
.ssa
.bit_size
== 16) {
1908 result
= ac_to_integer(&ctx
->ac
, result
);
1909 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
1911 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
1915 type_scalar_size_bytes(const struct glsl_type
*type
)
1917 assert(glsl_type_is_vector_or_scalar(type
) ||
1918 glsl_type_is_matrix(type
));
1919 return glsl_type_is_boolean(type
) ? 4 : glsl_get_bit_size(type
) / 8;
1922 static LLVMValueRef
visit_load_var(struct ac_nir_context
*ctx
,
1923 nir_intrinsic_instr
*instr
)
1925 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
1926 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
1928 LLVMValueRef values
[8];
1930 int ve
= instr
->dest
.ssa
.num_components
;
1932 LLVMValueRef indir_index
;
1934 unsigned const_index
;
1935 unsigned stride
= 4;
1936 int mode
= deref
->mode
;
1939 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
1940 var
->data
.mode
== nir_var_shader_in
;
1941 idx
= var
->data
.driver_location
;
1942 comp
= var
->data
.location_frac
;
1943 mode
= var
->data
.mode
;
1945 get_deref_offset(ctx
, deref
, vs_in
, NULL
, NULL
,
1946 &const_index
, &indir_index
);
1948 if (var
->data
.compact
) {
1950 const_index
+= comp
;
1955 if (instr
->dest
.ssa
.bit_size
== 64 &&
1956 (deref
->mode
== nir_var_shader_in
||
1957 deref
->mode
== nir_var_shader_out
||
1958 deref
->mode
== nir_var_function_temp
))
1962 case nir_var_shader_in
:
1963 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
1964 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
1965 return load_tess_varyings(ctx
, instr
, true);
1968 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
1969 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
1970 LLVMValueRef indir_index
;
1971 unsigned const_index
, vertex_index
;
1972 get_deref_offset(ctx
, deref
, false, &vertex_index
, NULL
,
1973 &const_index
, &indir_index
);
1975 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
1976 var
->data
.driver_location
,
1977 var
->data
.location_frac
,
1978 instr
->num_components
, vertex_index
, const_index
, type
);
1981 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
1983 unsigned count
= glsl_count_attribute_slots(
1985 ctx
->stage
== MESA_SHADER_VERTEX
);
1987 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
1988 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
1989 stride
, false, true);
1991 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
1995 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
1998 case nir_var_function_temp
:
1999 for (unsigned chan
= 0; chan
< ve
; chan
++) {
2001 unsigned count
= glsl_count_attribute_slots(
2004 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2005 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2006 stride
, true, true);
2008 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2012 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
2016 case nir_var_mem_shared
: {
2017 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2018 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2019 return LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2020 get_def_type(ctx
, &instr
->dest
.ssa
),
2023 case nir_var_shader_out
:
2024 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2025 return load_tess_varyings(ctx
, instr
, false);
2028 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2030 unsigned count
= glsl_count_attribute_slots(
2033 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2034 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2035 stride
, true, true);
2037 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2041 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
2042 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
2047 case nir_var_mem_global
: {
2048 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2049 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2050 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2051 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2053 LLVMTypeRef result_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2054 if (stride
!= natural_stride
) {
2055 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(result_type
),
2056 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2057 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2059 for (unsigned i
= 0; i
< instr
->dest
.ssa
.num_components
; ++i
) {
2060 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, i
* stride
/ natural_stride
, 0);
2061 values
[i
] = LLVMBuildLoad(ctx
->ac
.builder
,
2062 ac_build_gep_ptr(&ctx
->ac
, address
, offset
), "");
2064 return ac_build_gather_values(&ctx
->ac
, values
, instr
->dest
.ssa
.num_components
);
2066 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2067 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2068 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2069 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2074 unreachable("unhandle variable mode");
2076 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
2077 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2081 visit_store_var(struct ac_nir_context
*ctx
,
2082 nir_intrinsic_instr
*instr
)
2084 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2085 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2087 LLVMValueRef temp_ptr
, value
;
2090 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
2091 int writemask
= instr
->const_index
[0];
2092 LLVMValueRef indir_index
;
2093 unsigned const_index
;
2096 get_deref_offset(ctx
, deref
, false,
2097 NULL
, NULL
, &const_index
, &indir_index
);
2098 idx
= var
->data
.driver_location
;
2099 comp
= var
->data
.location_frac
;
2101 if (var
->data
.compact
) {
2102 const_index
+= comp
;
2107 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64 &&
2108 (deref
->mode
== nir_var_shader_out
||
2109 deref
->mode
== nir_var_function_temp
)) {
2111 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2112 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2115 writemask
= widen_mask(writemask
, 2);
2118 writemask
= writemask
<< comp
;
2120 switch (deref
->mode
) {
2121 case nir_var_shader_out
:
2123 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2124 LLVMValueRef vertex_index
= NULL
;
2125 LLVMValueRef indir_index
= NULL
;
2126 unsigned const_index
= 0;
2127 const bool is_patch
= var
->data
.patch
;
2129 get_deref_offset(ctx
, deref
, false, NULL
,
2130 is_patch
? NULL
: &vertex_index
,
2131 &const_index
, &indir_index
);
2133 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2134 vertex_index
, indir_index
,
2135 const_index
, src
, writemask
);
2139 for (unsigned chan
= 0; chan
< 8; chan
++) {
2141 if (!(writemask
& (1 << chan
)))
2144 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2146 if (var
->data
.compact
)
2149 unsigned count
= glsl_count_attribute_slots(
2152 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2153 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2154 stride
, true, true);
2156 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2157 value
, indir_index
, "");
2158 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2159 count
, stride
, tmp_vec
);
2162 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2164 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2168 case nir_var_function_temp
:
2169 for (unsigned chan
= 0; chan
< 8; chan
++) {
2170 if (!(writemask
& (1 << chan
)))
2173 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2175 unsigned count
= glsl_count_attribute_slots(
2178 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2179 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2182 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2183 value
, indir_index
, "");
2184 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2187 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2189 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2194 case nir_var_mem_global
:
2195 case nir_var_mem_shared
: {
2196 int writemask
= instr
->const_index
[0];
2197 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2198 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2200 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2201 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2202 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2204 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2205 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2206 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2208 if (writemask
== (1u << ac_get_llvm_num_components(val
)) - 1 &&
2209 stride
== natural_stride
) {
2210 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2211 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2212 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2214 val
= LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2215 LLVMGetElementType(LLVMTypeOf(address
)), "");
2216 LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2218 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(LLVMTypeOf(val
)),
2219 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2220 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2221 for (unsigned chan
= 0; chan
< 4; chan
++) {
2222 if (!(writemask
& (1 << chan
)))
2225 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, chan
* stride
/ natural_stride
, 0);
2227 LLVMValueRef ptr
= ac_build_gep_ptr(&ctx
->ac
, address
, offset
);
2228 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2230 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2231 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2232 LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2243 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2246 case GLSL_SAMPLER_DIM_BUF
:
2248 case GLSL_SAMPLER_DIM_1D
:
2249 return array
? 2 : 1;
2250 case GLSL_SAMPLER_DIM_2D
:
2251 return array
? 3 : 2;
2252 case GLSL_SAMPLER_DIM_MS
:
2253 return array
? 4 : 3;
2254 case GLSL_SAMPLER_DIM_3D
:
2255 case GLSL_SAMPLER_DIM_CUBE
:
2257 case GLSL_SAMPLER_DIM_RECT
:
2258 case GLSL_SAMPLER_DIM_SUBPASS
:
2260 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2269 /* Adjust the sample index according to FMASK.
2271 * For uncompressed MSAA surfaces, FMASK should return 0x76543210,
2272 * which is the identity mapping. Each nibble says which physical sample
2273 * should be fetched to get that sample.
2275 * For example, 0x11111100 means there are only 2 samples stored and
2276 * the second sample covers 3/4 of the pixel. When reading samples 0
2277 * and 1, return physical sample 0 (determined by the first two 0s
2278 * in FMASK), otherwise return physical sample 1.
2280 * The sample index should be adjusted as follows:
2281 * sample_index = (fmask >> (sample_index * 4)) & 0xF;
2283 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2284 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2285 LLVMValueRef coord_z
,
2286 LLVMValueRef sample_index
,
2287 LLVMValueRef fmask_desc_ptr
)
2289 struct ac_image_args args
= {0};
2292 args
.coords
[0] = coord_x
;
2293 args
.coords
[1] = coord_y
;
2295 args
.coords
[2] = coord_z
;
2297 args
.opcode
= ac_image_load
;
2298 args
.dim
= coord_z
? ac_image_2darray
: ac_image_2d
;
2299 args
.resource
= fmask_desc_ptr
;
2301 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2303 res
= ac_build_image_opcode(ctx
, &args
);
2305 res
= ac_to_integer(ctx
, res
);
2306 LLVMValueRef four
= LLVMConstInt(ctx
->i32
, 4, false);
2307 LLVMValueRef F
= LLVMConstInt(ctx
->i32
, 0xf, false);
2309 LLVMValueRef fmask
= LLVMBuildExtractElement(ctx
->builder
,
2313 LLVMValueRef sample_index4
=
2314 LLVMBuildMul(ctx
->builder
, sample_index
, four
, "");
2315 LLVMValueRef shifted_fmask
=
2316 LLVMBuildLShr(ctx
->builder
, fmask
, sample_index4
, "");
2317 LLVMValueRef final_sample
=
2318 LLVMBuildAnd(ctx
->builder
, shifted_fmask
, F
, "");
2320 /* Don't rewrite the sample index if WORD1.DATA_FORMAT of the FMASK
2321 * resource descriptor is 0 (invalid),
2323 LLVMValueRef fmask_desc
=
2324 LLVMBuildBitCast(ctx
->builder
, fmask_desc_ptr
,
2327 LLVMValueRef fmask_word1
=
2328 LLVMBuildExtractElement(ctx
->builder
, fmask_desc
,
2331 LLVMValueRef word1_is_nonzero
=
2332 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
,
2333 fmask_word1
, ctx
->i32_0
, "");
2335 /* Replace the MSAA sample index. */
2337 LLVMBuildSelect(ctx
->builder
, word1_is_nonzero
,
2338 final_sample
, sample_index
, "");
2339 return sample_index
;
2342 static nir_deref_instr
*get_image_deref(const nir_intrinsic_instr
*instr
)
2344 assert(instr
->src
[0].is_ssa
);
2345 return nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2348 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2349 const nir_intrinsic_instr
*instr
,
2350 enum ac_descriptor_type desc_type
,
2353 return get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
), desc_type
, NULL
, true, write
);
2356 static void get_image_coords(struct ac_nir_context
*ctx
,
2357 const nir_intrinsic_instr
*instr
,
2358 struct ac_image_args
*args
)
2360 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2362 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2363 LLVMValueRef masks
[] = {
2364 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2365 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2367 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2370 enum glsl_sampler_dim dim
= glsl_get_sampler_dim(type
);
2371 bool is_array
= glsl_sampler_type_is_array(type
);
2372 bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2373 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2374 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2375 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2376 bool gfx9_1d
= ctx
->ac
.chip_class
>= GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2377 count
= image_type_to_components_count(dim
, is_array
);
2379 if (is_ms
&& instr
->intrinsic
== nir_intrinsic_image_deref_load
) {
2380 LLVMValueRef fmask_load_address
[3];
2383 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2384 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2386 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2388 fmask_load_address
[2] = NULL
;
2390 for (chan
= 0; chan
< 2; ++chan
)
2391 fmask_load_address
[chan
] =
2392 LLVMBuildAdd(ctx
->ac
.builder
, fmask_load_address
[chan
],
2393 LLVMBuildFPToUI(ctx
->ac
.builder
, ctx
->abi
->frag_pos
[chan
],
2394 ctx
->ac
.i32
, ""), "");
2395 fmask_load_address
[2] = ac_to_integer(&ctx
->ac
, ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)]);
2397 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2398 fmask_load_address
[0],
2399 fmask_load_address
[1],
2400 fmask_load_address
[2],
2402 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2403 AC_DESC_FMASK
, NULL
, false, false));
2405 if (count
== 1 && !gfx9_1d
) {
2406 if (instr
->src
[1].ssa
->num_components
)
2407 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2409 args
->coords
[0] = src0
;
2414 for (chan
= 0; chan
< count
; ++chan
) {
2415 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2418 for (chan
= 0; chan
< 2; ++chan
) {
2419 args
->coords
[chan
] = LLVMBuildAdd(
2420 ctx
->ac
.builder
, args
->coords
[chan
],
2422 ctx
->ac
.builder
, ctx
->abi
->frag_pos
[chan
],
2423 ctx
->ac
.i32
, ""), "");
2425 args
->coords
[2] = ac_to_integer(&ctx
->ac
,
2426 ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)]);
2432 args
->coords
[2] = args
->coords
[1];
2433 args
->coords
[1] = ctx
->ac
.i32_0
;
2435 args
->coords
[1] = ctx
->ac
.i32_0
;
2440 args
->coords
[count
] = sample_index
;
2446 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2447 const nir_intrinsic_instr
*instr
, bool write
)
2449 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, write
);
2450 if (ctx
->abi
->gfx9_stride_size_workaround
) {
2451 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2452 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2453 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2455 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2456 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2457 elem_count
, stride
, "");
2459 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2460 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2465 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2466 const nir_intrinsic_instr
*instr
)
2469 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2470 const struct glsl_type
*type
= image_deref
->type
;
2471 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2472 struct ac_image_args args
= {};
2475 get_cache_policy(ctx
, var
->data
.image
.access
, false, false);
2477 const enum glsl_sampler_dim dim
= glsl_get_sampler_dim(type
);
2478 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2479 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2480 unsigned num_channels
= util_last_bit(mask
);
2481 LLVMValueRef rsrc
, vindex
;
2483 rsrc
= get_image_buffer_descriptor(ctx
, instr
, false);
2484 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2487 /* TODO: set "can_speculate" when OpenGL needs it. */
2488 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2489 ctx
->ac
.i32_0
, num_channels
,
2490 !!(args
.cache_policy
& ac_glc
),
2492 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2494 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2495 res
= ac_to_integer(&ctx
->ac
, res
);
2497 args
.opcode
= ac_image_load
;
2498 get_image_coords(ctx
, instr
, &args
);
2499 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2500 args
.dim
= get_ac_image_dim(&ctx
->ac
, glsl_get_sampler_dim(type
),
2501 glsl_sampler_type_is_array(type
));
2503 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2505 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2507 return ac_to_integer(&ctx
->ac
, res
);
2510 static void visit_image_store(struct ac_nir_context
*ctx
,
2511 nir_intrinsic_instr
*instr
)
2513 LLVMValueRef params
[8];
2514 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2515 const struct glsl_type
*type
= image_deref
->type
;
2516 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2517 const enum glsl_sampler_dim dim
= glsl_get_sampler_dim(type
);
2518 bool writeonly_memory
= var
->data
.image
.access
& ACCESS_NON_READABLE
;
2519 struct ac_image_args args
= {};
2521 args
.cache_policy
= get_cache_policy(ctx
, var
->data
.image
.access
, true,
2524 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2526 const char *types
[] = { "f32", "v2f32", "v4f32" };
2527 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, true);
2528 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2529 unsigned src_channels
= ac_get_llvm_num_components(src
);
2531 if (src_channels
== 3)
2532 src
= ac_build_expand_to_vec4(&ctx
->ac
, src
, 3);
2534 params
[0] = src
; /* data */
2536 params
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2537 ctx
->ac
.i32_0
, ""); /* vindex */
2538 params
[3] = ctx
->ac
.i32_0
; /* voffset */
2539 snprintf(name
, sizeof(name
), "%s.%s",
2540 HAVE_LLVM
>= 0x800 ? "llvm.amdgcn.struct.buffer.store.format"
2541 : "llvm.amdgcn.buffer.store.format",
2542 types
[CLAMP(src_channels
, 1, 3) - 1]);
2544 if (HAVE_LLVM
>= 0x800) {
2545 params
[4] = ctx
->ac
.i32_0
; /* soffset */
2546 params
[5] = (args
.cache_policy
& ac_glc
) ? ctx
->ac
.i32_1
: ctx
->ac
.i32_0
;
2548 params
[4] = LLVMConstInt(ctx
->ac
.i1
, !!(args
.cache_policy
& ac_glc
), 0);
2549 params
[5] = ctx
->ac
.i1false
; /* slc */
2551 ac_build_intrinsic(&ctx
->ac
, name
, ctx
->ac
.voidt
, params
, 6, 0);
2553 args
.opcode
= ac_image_store
;
2554 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2555 get_image_coords(ctx
, instr
, &args
);
2556 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2557 args
.dim
= get_ac_image_dim(&ctx
->ac
, glsl_get_sampler_dim(type
),
2558 glsl_sampler_type_is_array(type
));
2561 ac_build_image_opcode(&ctx
->ac
, &args
);
2566 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2567 const nir_intrinsic_instr
*instr
)
2569 LLVMValueRef params
[7];
2570 int param_count
= 0;
2571 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2573 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
;
2574 const char *atomic_name
;
2575 char intrinsic_name
[64];
2576 enum ac_atomic_op atomic_subop
;
2577 MAYBE_UNUSED
int length
;
2579 bool is_unsigned
= glsl_get_sampler_result_type(type
) == GLSL_TYPE_UINT
;
2581 switch (instr
->intrinsic
) {
2582 case nir_intrinsic_image_deref_atomic_add
:
2583 atomic_name
= "add";
2584 atomic_subop
= ac_atomic_add
;
2586 case nir_intrinsic_image_deref_atomic_min
:
2587 atomic_name
= is_unsigned
? "umin" : "smin";
2588 atomic_subop
= is_unsigned
? ac_atomic_umin
: ac_atomic_smin
;
2590 case nir_intrinsic_image_deref_atomic_max
:
2591 atomic_name
= is_unsigned
? "umax" : "smax";
2592 atomic_subop
= is_unsigned
? ac_atomic_umax
: ac_atomic_smax
;
2594 case nir_intrinsic_image_deref_atomic_and
:
2595 atomic_name
= "and";
2596 atomic_subop
= ac_atomic_and
;
2598 case nir_intrinsic_image_deref_atomic_or
:
2600 atomic_subop
= ac_atomic_or
;
2602 case nir_intrinsic_image_deref_atomic_xor
:
2603 atomic_name
= "xor";
2604 atomic_subop
= ac_atomic_xor
;
2606 case nir_intrinsic_image_deref_atomic_exchange
:
2607 atomic_name
= "swap";
2608 atomic_subop
= ac_atomic_swap
;
2610 case nir_intrinsic_image_deref_atomic_comp_swap
:
2611 atomic_name
= "cmpswap";
2612 atomic_subop
= 0; /* not used */
2619 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
2620 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
2622 if (glsl_get_sampler_dim(type
) == GLSL_SAMPLER_DIM_BUF
) {
2623 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, true);
2624 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2625 ctx
->ac
.i32_0
, ""); /* vindex */
2626 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
2627 if (HAVE_LLVM
>= 0x800) {
2628 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
2629 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
2631 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2632 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
2634 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
2636 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2637 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
2640 assert(length
< sizeof(intrinsic_name
));
2641 return ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
2642 params
, param_count
, 0);
2644 struct ac_image_args args
= {};
2645 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
2646 args
.atomic
= atomic_subop
;
2647 args
.data
[0] = params
[0];
2649 args
.data
[1] = params
[1];
2650 get_image_coords(ctx
, instr
, &args
);
2651 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2652 args
.dim
= get_ac_image_dim(&ctx
->ac
, glsl_get_sampler_dim(type
),
2653 glsl_sampler_type_is_array(type
));
2655 return ac_build_image_opcode(&ctx
->ac
, &args
);
2659 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
2660 const nir_intrinsic_instr
*instr
)
2662 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2664 struct ac_image_args args
= { 0 };
2665 args
.dim
= get_ac_sampler_dim(&ctx
->ac
, glsl_get_sampler_dim(type
),
2666 glsl_sampler_type_is_array(type
));
2668 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2669 args
.opcode
= ac_image_get_resinfo
;
2670 args
.lod
= ctx
->ac
.i32_0
;
2671 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2673 return ac_build_image_opcode(&ctx
->ac
, &args
);
2676 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
2677 const nir_intrinsic_instr
*instr
)
2680 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2682 if (glsl_get_sampler_dim(type
) == GLSL_SAMPLER_DIM_BUF
)
2683 return get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, false), true);
2685 struct ac_image_args args
= { 0 };
2687 args
.dim
= get_ac_image_dim(&ctx
->ac
, glsl_get_sampler_dim(type
),
2688 glsl_sampler_type_is_array(type
));
2690 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2691 args
.opcode
= ac_image_get_resinfo
;
2692 args
.lod
= ctx
->ac
.i32_0
;
2693 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2695 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2697 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
2699 if (glsl_get_sampler_dim(type
) == GLSL_SAMPLER_DIM_CUBE
&&
2700 glsl_sampler_type_is_array(type
)) {
2701 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
2702 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2703 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
2704 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
2706 if (ctx
->ac
.chip_class
>= GFX9
&&
2707 glsl_get_sampler_dim(type
) == GLSL_SAMPLER_DIM_1D
&&
2708 glsl_sampler_type_is_array(type
)) {
2709 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2710 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
2717 static void emit_membar(struct ac_llvm_context
*ac
,
2718 const nir_intrinsic_instr
*instr
)
2720 unsigned waitcnt
= NOOP_WAITCNT
;
2722 switch (instr
->intrinsic
) {
2723 case nir_intrinsic_memory_barrier
:
2724 case nir_intrinsic_group_memory_barrier
:
2725 waitcnt
&= VM_CNT
& LGKM_CNT
;
2727 case nir_intrinsic_memory_barrier_atomic_counter
:
2728 case nir_intrinsic_memory_barrier_buffer
:
2729 case nir_intrinsic_memory_barrier_image
:
2732 case nir_intrinsic_memory_barrier_shared
:
2733 waitcnt
&= LGKM_CNT
;
2738 if (waitcnt
!= NOOP_WAITCNT
)
2739 ac_build_waitcnt(ac
, waitcnt
);
2742 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
2744 /* SI only (thanks to a hw bug workaround):
2745 * The real barrier instruction isn’t needed, because an entire patch
2746 * always fits into a single wave.
2748 if (ac
->chip_class
== SI
&& stage
== MESA_SHADER_TESS_CTRL
) {
2749 ac_build_waitcnt(ac
, LGKM_CNT
& VM_CNT
);
2752 ac_build_s_barrier(ac
);
2755 static void emit_discard(struct ac_nir_context
*ctx
,
2756 const nir_intrinsic_instr
*instr
)
2760 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
2761 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2762 get_src(ctx
, instr
->src
[0]),
2765 assert(instr
->intrinsic
== nir_intrinsic_discard
);
2766 cond
= ctx
->ac
.i1false
;
2769 ctx
->abi
->emit_kill(ctx
->abi
, cond
);
2773 visit_load_helper_invocation(struct ac_nir_context
*ctx
)
2775 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
,
2776 "llvm.amdgcn.ps.live",
2777 ctx
->ac
.i1
, NULL
, 0,
2778 AC_FUNC_ATTR_READNONE
);
2779 result
= LLVMBuildNot(ctx
->ac
.builder
, result
, "");
2780 return LLVMBuildSExt(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
2784 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
2786 LLVMValueRef result
;
2787 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
2788 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2789 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2791 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
2795 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
2797 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2798 LLVMValueRef result
;
2799 result
= LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2800 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
2801 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
2803 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
2808 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
2810 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
2811 return LLVMBuildAnd(ctx
->ac
.builder
, ctx
->abi
->tg_size
,
2812 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
2814 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
2819 visit_first_invocation(struct ac_nir_context
*ctx
)
2821 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
2823 /* The second argument is whether cttz(0) should be defined, but we do not care. */
2824 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
2825 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
,
2827 ctx
->ac
.i64
, args
, 2,
2828 AC_FUNC_ATTR_NOUNWIND
|
2829 AC_FUNC_ATTR_READNONE
);
2831 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
2835 visit_load_shared(struct ac_nir_context
*ctx
,
2836 const nir_intrinsic_instr
*instr
)
2838 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
2840 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
2842 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
2843 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2844 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
2845 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
2848 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
2849 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2853 visit_store_shared(struct ac_nir_context
*ctx
,
2854 const nir_intrinsic_instr
*instr
)
2856 LLVMValueRef derived_ptr
, data
,index
;
2857 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2859 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1]);
2860 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
2862 int writemask
= nir_intrinsic_write_mask(instr
);
2863 for (int chan
= 0; chan
< 4; chan
++) {
2864 if (!(writemask
& (1 << chan
))) {
2867 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2868 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
2869 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
2870 LLVMBuildStore(builder
, data
, derived_ptr
);
2874 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
2875 const nir_intrinsic_instr
*instr
,
2876 LLVMValueRef ptr
, int src_idx
)
2878 LLVMValueRef result
;
2879 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
2881 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
2882 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
2883 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
2884 result
= LLVMBuildAtomicCmpXchg(ctx
->ac
.builder
,
2886 LLVMAtomicOrderingSequentiallyConsistent
,
2887 LLVMAtomicOrderingSequentiallyConsistent
,
2889 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
2891 LLVMAtomicRMWBinOp op
;
2892 switch (instr
->intrinsic
) {
2893 case nir_intrinsic_shared_atomic_add
:
2894 case nir_intrinsic_deref_atomic_add
:
2895 op
= LLVMAtomicRMWBinOpAdd
;
2897 case nir_intrinsic_shared_atomic_umin
:
2898 case nir_intrinsic_deref_atomic_umin
:
2899 op
= LLVMAtomicRMWBinOpUMin
;
2901 case nir_intrinsic_shared_atomic_umax
:
2902 case nir_intrinsic_deref_atomic_umax
:
2903 op
= LLVMAtomicRMWBinOpUMax
;
2905 case nir_intrinsic_shared_atomic_imin
:
2906 case nir_intrinsic_deref_atomic_imin
:
2907 op
= LLVMAtomicRMWBinOpMin
;
2909 case nir_intrinsic_shared_atomic_imax
:
2910 case nir_intrinsic_deref_atomic_imax
:
2911 op
= LLVMAtomicRMWBinOpMax
;
2913 case nir_intrinsic_shared_atomic_and
:
2914 case nir_intrinsic_deref_atomic_and
:
2915 op
= LLVMAtomicRMWBinOpAnd
;
2917 case nir_intrinsic_shared_atomic_or
:
2918 case nir_intrinsic_deref_atomic_or
:
2919 op
= LLVMAtomicRMWBinOpOr
;
2921 case nir_intrinsic_shared_atomic_xor
:
2922 case nir_intrinsic_deref_atomic_xor
:
2923 op
= LLVMAtomicRMWBinOpXor
;
2925 case nir_intrinsic_shared_atomic_exchange
:
2926 case nir_intrinsic_deref_atomic_exchange
:
2927 op
= LLVMAtomicRMWBinOpXchg
;
2933 result
= LLVMBuildAtomicRMW(ctx
->ac
.builder
, op
, ptr
, ac_to_integer(&ctx
->ac
, src
),
2934 LLVMAtomicOrderingSequentiallyConsistent
,
2940 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
2942 LLVMValueRef values
[2];
2943 LLVMValueRef pos
[2];
2945 pos
[0] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[0]);
2946 pos
[1] = ac_to_float(&ctx
->ac
, ctx
->abi
->frag_pos
[1]);
2948 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
2949 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
2950 return ac_build_gather_values(&ctx
->ac
, values
, 2);
2953 static LLVMValueRef
visit_interp(struct ac_nir_context
*ctx
,
2954 const nir_intrinsic_instr
*instr
)
2956 LLVMValueRef result
[4];
2957 LLVMValueRef interp_param
;
2960 LLVMValueRef src_c0
= NULL
;
2961 LLVMValueRef src_c1
= NULL
;
2962 LLVMValueRef src0
= NULL
;
2964 nir_deref_instr
*deref_instr
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2965 nir_variable
*var
= nir_deref_instr_get_variable(deref_instr
);
2966 int input_base
= ctx
->abi
->fs_input_attr_indices
[var
->data
.location
- VARYING_SLOT_VAR0
];
2967 switch (instr
->intrinsic
) {
2968 case nir_intrinsic_interp_deref_at_centroid
:
2969 location
= INTERP_CENTROID
;
2971 case nir_intrinsic_interp_deref_at_sample
:
2972 case nir_intrinsic_interp_deref_at_offset
:
2973 location
= INTERP_CENTER
;
2974 src0
= get_src(ctx
, instr
->src
[1]);
2980 if (instr
->intrinsic
== nir_intrinsic_interp_deref_at_offset
) {
2981 src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, ctx
->ac
.i32_0
, ""));
2982 src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, ctx
->ac
.i32_1
, ""));
2983 } else if (instr
->intrinsic
== nir_intrinsic_interp_deref_at_sample
) {
2984 LLVMValueRef sample_position
;
2985 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
2987 /* fetch sample ID */
2988 sample_position
= ctx
->abi
->load_sample_position(ctx
->abi
, src0
);
2990 src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
, ctx
->ac
.i32_0
, "");
2991 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
2992 src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_position
, ctx
->ac
.i32_1
, "");
2993 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
2995 interp_param
= ctx
->abi
->lookup_interp_param(ctx
->abi
, var
->data
.interpolation
, location
);
2997 if (location
== INTERP_CENTER
) {
2998 LLVMValueRef ij_out
[2];
2999 LLVMValueRef ddxy_out
= emit_ddxy_interp(ctx
, interp_param
);
3002 * take the I then J parameters, and the DDX/Y for it, and
3003 * calculate the IJ inputs for the interpolator.
3004 * temp1 = ddx * offset/sample.x + I;
3005 * interp_param.I = ddy * offset/sample.y + temp1;
3006 * temp1 = ddx * offset/sample.x + J;
3007 * interp_param.J = ddy * offset/sample.y + temp1;
3009 for (unsigned i
= 0; i
< 2; i
++) {
3010 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
3011 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
3012 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3013 ddxy_out
, ix_ll
, "");
3014 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3015 ddxy_out
, iy_ll
, "");
3016 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3017 interp_param
, ix_ll
, "");
3018 LLVMValueRef temp1
, temp2
;
3020 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
3023 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
3024 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
3026 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
3027 temp2
, ctx
->ac
.i32
, "");
3029 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
3033 LLVMValueRef attrib_idx
= ctx
->ac
.i32_0
;
3034 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3035 if (deref_instr
->deref_type
== nir_deref_type_array
) {
3036 unsigned array_size
= glsl_count_attribute_slots(deref_instr
->type
, false);
3038 LLVMValueRef offset
;
3039 nir_const_value
*const_value
= nir_src_as_const_value(deref_instr
->arr
.index
);
3041 offset
= LLVMConstInt(ctx
->ac
.i32
, array_size
* const_value
->u32
[0], false);
3043 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3045 offset
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3046 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
3049 attrib_idx
= LLVMBuildAdd(ctx
->ac
.builder
, attrib_idx
, offset
, "");
3050 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3051 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
3052 LLVMValueRef offset
;
3053 unsigned sidx
= deref_instr
->strct
.index
;
3054 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3055 offset
= LLVMConstInt(ctx
->ac
.i32
, glsl_get_struct_location_offset(deref_instr
->type
, sidx
), false);
3056 attrib_idx
= LLVMBuildAdd(ctx
->ac
.builder
, attrib_idx
, offset
, "");
3058 unreachable("Unsupported deref type");
3063 unsigned attrib_size
= glsl_count_attribute_slots(var
->type
, false);
3064 for (chan
= 0; chan
< 4; chan
++) {
3065 LLVMValueRef gather
= LLVMGetUndef(LLVMVectorType(ctx
->ac
.f32
, attrib_size
));
3066 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, chan
, false);
3068 for (unsigned idx
= 0; idx
< attrib_size
; ++idx
) {
3069 LLVMValueRef v
, attr_number
;
3071 attr_number
= LLVMConstInt(ctx
->ac
.i32
, input_base
+ idx
, false);
3073 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
,
3074 interp_param
, ctx
->ac
.v2f32
, "");
3075 LLVMValueRef i
= LLVMBuildExtractElement(
3076 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_0
, "");
3077 LLVMValueRef j
= LLVMBuildExtractElement(
3078 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_1
, "");
3080 v
= ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3081 ctx
->abi
->prim_mask
, i
, j
);
3083 v
= ac_build_fs_interp_mov(&ctx
->ac
, LLVMConstInt(ctx
->ac
.i32
, 2, false),
3084 llvm_chan
, attr_number
, ctx
->abi
->prim_mask
);
3087 gather
= LLVMBuildInsertElement(ctx
->ac
.builder
, gather
, v
,
3088 LLVMConstInt(ctx
->ac
.i32
, idx
, false), "");
3091 result
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
, gather
, attrib_idx
, "");
3094 return ac_build_varying_gather_values(&ctx
->ac
, result
, instr
->num_components
,
3095 var
->data
.location_frac
);
3098 static void visit_intrinsic(struct ac_nir_context
*ctx
,
3099 nir_intrinsic_instr
*instr
)
3101 LLVMValueRef result
= NULL
;
3103 switch (instr
->intrinsic
) {
3104 case nir_intrinsic_ballot
:
3105 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3107 case nir_intrinsic_read_invocation
:
3108 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3109 get_src(ctx
, instr
->src
[1]));
3111 case nir_intrinsic_read_first_invocation
:
3112 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
3114 case nir_intrinsic_load_subgroup_invocation
:
3115 result
= ac_get_thread_id(&ctx
->ac
);
3117 case nir_intrinsic_load_work_group_id
: {
3118 LLVMValueRef values
[3];
3120 for (int i
= 0; i
< 3; i
++) {
3121 values
[i
] = ctx
->abi
->workgroup_ids
[i
] ?
3122 ctx
->abi
->workgroup_ids
[i
] : ctx
->ac
.i32_0
;
3125 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
3128 case nir_intrinsic_load_base_vertex
:
3129 case nir_intrinsic_load_first_vertex
:
3130 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
3132 case nir_intrinsic_load_local_group_size
:
3133 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
3135 case nir_intrinsic_load_vertex_id
:
3136 result
= LLVMBuildAdd(ctx
->ac
.builder
, ctx
->abi
->vertex_id
,
3137 ctx
->abi
->base_vertex
, "");
3139 case nir_intrinsic_load_vertex_id_zero_base
: {
3140 result
= ctx
->abi
->vertex_id
;
3143 case nir_intrinsic_load_local_invocation_id
: {
3144 result
= ctx
->abi
->local_invocation_ids
;
3147 case nir_intrinsic_load_base_instance
:
3148 result
= ctx
->abi
->start_instance
;
3150 case nir_intrinsic_load_draw_id
:
3151 result
= ctx
->abi
->draw_id
;
3153 case nir_intrinsic_load_view_index
:
3154 result
= ctx
->abi
->view_index
;
3156 case nir_intrinsic_load_invocation_id
:
3157 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
)
3158 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->tcs_rel_ids
, 8, 5);
3160 result
= ctx
->abi
->gs_invocation_id
;
3162 case nir_intrinsic_load_primitive_id
:
3163 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3164 result
= ctx
->abi
->gs_prim_id
;
3165 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3166 result
= ctx
->abi
->tcs_patch_id
;
3167 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3168 result
= ctx
->abi
->tes_patch_id
;
3170 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3172 case nir_intrinsic_load_sample_id
:
3173 result
= ac_unpack_param(&ctx
->ac
, ctx
->abi
->ancillary
, 8, 4);
3175 case nir_intrinsic_load_sample_pos
:
3176 result
= load_sample_pos(ctx
);
3178 case nir_intrinsic_load_sample_mask_in
:
3179 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3181 case nir_intrinsic_load_frag_coord
: {
3182 LLVMValueRef values
[4] = {
3183 ctx
->abi
->frag_pos
[0],
3184 ctx
->abi
->frag_pos
[1],
3185 ctx
->abi
->frag_pos
[2],
3186 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
, ctx
->abi
->frag_pos
[3])
3188 result
= ac_build_gather_values(&ctx
->ac
, values
, 4);
3191 case nir_intrinsic_load_front_face
:
3192 result
= ctx
->abi
->front_face
;
3194 case nir_intrinsic_load_helper_invocation
:
3195 result
= visit_load_helper_invocation(ctx
);
3197 case nir_intrinsic_load_instance_id
:
3198 result
= ctx
->abi
->instance_id
;
3200 case nir_intrinsic_load_num_work_groups
:
3201 result
= ctx
->abi
->num_work_groups
;
3203 case nir_intrinsic_load_local_invocation_index
:
3204 result
= visit_load_local_invocation_index(ctx
);
3206 case nir_intrinsic_load_subgroup_id
:
3207 result
= visit_load_subgroup_id(ctx
);
3209 case nir_intrinsic_load_num_subgroups
:
3210 result
= visit_load_num_subgroups(ctx
);
3212 case nir_intrinsic_first_invocation
:
3213 result
= visit_first_invocation(ctx
);
3215 case nir_intrinsic_load_push_constant
:
3216 result
= visit_load_push_constant(ctx
, instr
);
3218 case nir_intrinsic_vulkan_resource_index
: {
3219 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3220 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3221 unsigned binding
= nir_intrinsic_binding(instr
);
3223 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3227 case nir_intrinsic_vulkan_resource_reindex
:
3228 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3230 case nir_intrinsic_store_ssbo
:
3231 visit_store_ssbo(ctx
, instr
);
3233 case nir_intrinsic_load_ssbo
:
3234 result
= visit_load_buffer(ctx
, instr
);
3236 case nir_intrinsic_ssbo_atomic_add
:
3237 case nir_intrinsic_ssbo_atomic_imin
:
3238 case nir_intrinsic_ssbo_atomic_umin
:
3239 case nir_intrinsic_ssbo_atomic_imax
:
3240 case nir_intrinsic_ssbo_atomic_umax
:
3241 case nir_intrinsic_ssbo_atomic_and
:
3242 case nir_intrinsic_ssbo_atomic_or
:
3243 case nir_intrinsic_ssbo_atomic_xor
:
3244 case nir_intrinsic_ssbo_atomic_exchange
:
3245 case nir_intrinsic_ssbo_atomic_comp_swap
:
3246 result
= visit_atomic_ssbo(ctx
, instr
);
3248 case nir_intrinsic_load_ubo
:
3249 result
= visit_load_ubo_buffer(ctx
, instr
);
3251 case nir_intrinsic_get_buffer_size
:
3252 result
= visit_get_buffer_size(ctx
, instr
);
3254 case nir_intrinsic_load_deref
:
3255 result
= visit_load_var(ctx
, instr
);
3257 case nir_intrinsic_store_deref
:
3258 visit_store_var(ctx
, instr
);
3260 case nir_intrinsic_load_shared
:
3261 result
= visit_load_shared(ctx
, instr
);
3263 case nir_intrinsic_store_shared
:
3264 visit_store_shared(ctx
, instr
);
3266 case nir_intrinsic_image_deref_samples
:
3267 result
= visit_image_samples(ctx
, instr
);
3269 case nir_intrinsic_image_deref_load
:
3270 result
= visit_image_load(ctx
, instr
);
3272 case nir_intrinsic_image_deref_store
:
3273 visit_image_store(ctx
, instr
);
3275 case nir_intrinsic_image_deref_atomic_add
:
3276 case nir_intrinsic_image_deref_atomic_min
:
3277 case nir_intrinsic_image_deref_atomic_max
:
3278 case nir_intrinsic_image_deref_atomic_and
:
3279 case nir_intrinsic_image_deref_atomic_or
:
3280 case nir_intrinsic_image_deref_atomic_xor
:
3281 case nir_intrinsic_image_deref_atomic_exchange
:
3282 case nir_intrinsic_image_deref_atomic_comp_swap
:
3283 result
= visit_image_atomic(ctx
, instr
);
3285 case nir_intrinsic_image_deref_size
:
3286 result
= visit_image_size(ctx
, instr
);
3288 case nir_intrinsic_shader_clock
:
3289 result
= ac_build_shader_clock(&ctx
->ac
);
3291 case nir_intrinsic_discard
:
3292 case nir_intrinsic_discard_if
:
3293 emit_discard(ctx
, instr
);
3295 case nir_intrinsic_memory_barrier
:
3296 case nir_intrinsic_group_memory_barrier
:
3297 case nir_intrinsic_memory_barrier_atomic_counter
:
3298 case nir_intrinsic_memory_barrier_buffer
:
3299 case nir_intrinsic_memory_barrier_image
:
3300 case nir_intrinsic_memory_barrier_shared
:
3301 emit_membar(&ctx
->ac
, instr
);
3303 case nir_intrinsic_barrier
:
3304 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
3306 case nir_intrinsic_shared_atomic_add
:
3307 case nir_intrinsic_shared_atomic_imin
:
3308 case nir_intrinsic_shared_atomic_umin
:
3309 case nir_intrinsic_shared_atomic_imax
:
3310 case nir_intrinsic_shared_atomic_umax
:
3311 case nir_intrinsic_shared_atomic_and
:
3312 case nir_intrinsic_shared_atomic_or
:
3313 case nir_intrinsic_shared_atomic_xor
:
3314 case nir_intrinsic_shared_atomic_exchange
:
3315 case nir_intrinsic_shared_atomic_comp_swap
: {
3316 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0]);
3317 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3320 case nir_intrinsic_deref_atomic_add
:
3321 case nir_intrinsic_deref_atomic_imin
:
3322 case nir_intrinsic_deref_atomic_umin
:
3323 case nir_intrinsic_deref_atomic_imax
:
3324 case nir_intrinsic_deref_atomic_umax
:
3325 case nir_intrinsic_deref_atomic_and
:
3326 case nir_intrinsic_deref_atomic_or
:
3327 case nir_intrinsic_deref_atomic_xor
:
3328 case nir_intrinsic_deref_atomic_exchange
:
3329 case nir_intrinsic_deref_atomic_comp_swap
: {
3330 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
3331 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3334 case nir_intrinsic_interp_deref_at_centroid
:
3335 case nir_intrinsic_interp_deref_at_sample
:
3336 case nir_intrinsic_interp_deref_at_offset
:
3337 result
= visit_interp(ctx
, instr
);
3339 case nir_intrinsic_emit_vertex
:
3340 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
3342 case nir_intrinsic_end_primitive
:
3343 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
3345 case nir_intrinsic_load_tess_coord
:
3346 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
3348 case nir_intrinsic_load_tess_level_outer
:
3349 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
);
3351 case nir_intrinsic_load_tess_level_inner
:
3352 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
);
3354 case nir_intrinsic_load_patch_vertices_in
:
3355 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
3357 case nir_intrinsic_vote_all
: {
3358 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3359 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3362 case nir_intrinsic_vote_any
: {
3363 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3364 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3367 case nir_intrinsic_shuffle
:
3368 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3369 get_src(ctx
, instr
->src
[1]));
3371 case nir_intrinsic_reduce
:
3372 result
= ac_build_reduce(&ctx
->ac
,
3373 get_src(ctx
, instr
->src
[0]),
3374 instr
->const_index
[0],
3375 instr
->const_index
[1]);
3377 case nir_intrinsic_inclusive_scan
:
3378 result
= ac_build_inclusive_scan(&ctx
->ac
,
3379 get_src(ctx
, instr
->src
[0]),
3380 instr
->const_index
[0]);
3382 case nir_intrinsic_exclusive_scan
:
3383 result
= ac_build_exclusive_scan(&ctx
->ac
,
3384 get_src(ctx
, instr
->src
[0]),
3385 instr
->const_index
[0]);
3387 case nir_intrinsic_quad_broadcast
: {
3388 unsigned lane
= nir_src_as_const_value(instr
->src
[1])->u32
[0];
3389 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3390 lane
, lane
, lane
, lane
);
3393 case nir_intrinsic_quad_swap_horizontal
:
3394 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
3396 case nir_intrinsic_quad_swap_vertical
:
3397 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
3399 case nir_intrinsic_quad_swap_diagonal
:
3400 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
3403 fprintf(stderr
, "Unknown intrinsic: ");
3404 nir_print_instr(&instr
->instr
, stderr
);
3405 fprintf(stderr
, "\n");
3409 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3413 static LLVMValueRef
get_bindless_index_from_uniform(struct ac_nir_context
*ctx
,
3414 unsigned base_index
,
3415 unsigned constant_index
,
3416 LLVMValueRef dynamic_index
)
3418 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, base_index
* 4, 0);
3419 LLVMValueRef index
= LLVMBuildAdd(ctx
->ac
.builder
, dynamic_index
,
3420 LLVMConstInt(ctx
->ac
.i32
, constant_index
, 0), "");
3422 /* Bindless uniforms are 64bit so multiple index by 8 */
3423 index
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i32
, 8, 0), "");
3424 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, index
, "");
3426 LLVMValueRef ubo_index
= ctx
->abi
->load_ubo(ctx
->abi
, ctx
->ac
.i32_0
);
3428 LLVMValueRef ret
= ac_build_buffer_load(&ctx
->ac
, ubo_index
, 1, NULL
, offset
,
3429 NULL
, 0, false, false, true, true);
3431 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ctx
->ac
.i32
, "");
3434 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
3435 nir_deref_instr
*deref_instr
,
3436 enum ac_descriptor_type desc_type
,
3437 const nir_tex_instr
*tex_instr
,
3438 bool image
, bool write
)
3440 LLVMValueRef index
= NULL
;
3441 unsigned constant_index
= 0;
3442 unsigned descriptor_set
;
3443 unsigned base_index
;
3444 bool bindless
= false;
3447 assert(tex_instr
&& !image
);
3449 base_index
= tex_instr
->sampler_index
;
3451 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3452 if (deref_instr
->deref_type
== nir_deref_type_array
) {
3453 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
3457 nir_const_value
*const_value
= nir_src_as_const_value(deref_instr
->arr
.index
);
3459 constant_index
+= array_size
* const_value
->u32
[0];
3461 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3463 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3464 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
3469 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
3472 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3473 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
3474 unsigned sidx
= deref_instr
->strct
.index
;
3475 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
3476 constant_index
+= glsl_get_struct_location_offset(deref_instr
->type
, sidx
);
3478 unreachable("Unsupported deref type");
3481 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
3483 if (deref_instr
->var
->data
.bindless
) {
3484 /* For now just assert on unhandled variable types */
3485 assert(deref_instr
->var
->data
.mode
== nir_var_uniform
);
3487 base_index
= deref_instr
->var
->data
.driver_location
;
3490 index
= index
? index
: ctx
->ac
.i32_0
;
3491 index
= get_bindless_index_from_uniform(ctx
, base_index
,
3492 constant_index
, index
);
3494 base_index
= deref_instr
->var
->data
.binding
;
3497 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
3500 constant_index
, index
,
3501 desc_type
, image
, write
, bindless
);
3504 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
3507 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
3508 * filtering manually. The driver sets img7 to a mask clearing
3509 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
3510 * s_and_b32 samp0, samp0, img7
3513 * The ANISO_OVERRIDE sampler field enables this fix in TA.
3515 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
3516 LLVMValueRef res
, LLVMValueRef samp
)
3518 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3519 LLVMValueRef img7
, samp0
;
3521 if (ctx
->ac
.chip_class
>= VI
)
3524 img7
= LLVMBuildExtractElement(builder
, res
,
3525 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
3526 samp0
= LLVMBuildExtractElement(builder
, samp
,
3527 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3528 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
3529 return LLVMBuildInsertElement(builder
, samp
, samp0
,
3530 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
3533 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
3534 nir_tex_instr
*instr
,
3535 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
3536 LLVMValueRef
*fmask_ptr
)
3538 nir_deref_instr
*texture_deref_instr
= NULL
;
3539 nir_deref_instr
*sampler_deref_instr
= NULL
;
3541 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3542 switch (instr
->src
[i
].src_type
) {
3543 case nir_tex_src_texture_deref
:
3544 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3546 case nir_tex_src_sampler_deref
:
3547 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
3554 if (!sampler_deref_instr
)
3555 sampler_deref_instr
= texture_deref_instr
;
3557 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
)
3558 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_BUFFER
, instr
, false, false);
3560 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_IMAGE
, instr
, false, false);
3562 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, instr
, false, false);
3563 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
3564 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
3566 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
3567 instr
->op
== nir_texop_samples_identical
))
3568 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
, instr
, false, false);
3571 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
3574 coord
= ac_to_float(ctx
, coord
);
3575 coord
= ac_build_round(ctx
, coord
);
3576 coord
= ac_to_integer(ctx
, coord
);
3580 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
3582 LLVMValueRef result
= NULL
;
3583 struct ac_image_args args
= { 0 };
3584 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
3585 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
3586 unsigned offset_src
= 0;
3588 tex_fetch_ptrs(ctx
, instr
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
3590 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
3591 switch (instr
->src
[i
].src_type
) {
3592 case nir_tex_src_coord
: {
3593 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
3594 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
3595 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
3598 case nir_tex_src_projector
:
3600 case nir_tex_src_comparator
:
3601 if (instr
->is_shadow
)
3602 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
3604 case nir_tex_src_offset
:
3605 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
3608 case nir_tex_src_bias
:
3609 if (instr
->op
== nir_texop_txb
)
3610 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
3612 case nir_tex_src_lod
: {
3613 nir_const_value
*val
= nir_src_as_const_value(instr
->src
[i
].src
);
3615 if (val
&& val
->i32
[0] == 0)
3616 args
.level_zero
= true;
3618 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
3621 case nir_tex_src_ms_index
:
3622 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
3624 case nir_tex_src_ms_mcs
:
3626 case nir_tex_src_ddx
:
3627 ddx
= get_src(ctx
, instr
->src
[i
].src
);
3629 case nir_tex_src_ddy
:
3630 ddy
= get_src(ctx
, instr
->src
[i
].src
);
3632 case nir_tex_src_texture_offset
:
3633 case nir_tex_src_sampler_offset
:
3634 case nir_tex_src_plane
:
3640 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
3641 result
= get_buffer_size(ctx
, args
.resource
, true);
3645 if (instr
->op
== nir_texop_texture_samples
) {
3646 LLVMValueRef res
, samples
, is_msaa
;
3647 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
3648 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
3649 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
3650 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
3651 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
3652 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
3653 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
3654 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
3655 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
3657 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
3658 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
3659 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
3660 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
3661 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
3663 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
3669 if (args
.offset
&& instr
->op
!= nir_texop_txf
) {
3670 LLVMValueRef offset
[3], pack
;
3671 for (unsigned chan
= 0; chan
< 3; ++chan
)
3672 offset
[chan
] = ctx
->ac
.i32_0
;
3674 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
3675 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
3676 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
3677 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
3678 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
3680 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
3681 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
3683 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
3684 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
3688 /* TC-compatible HTILE on radeonsi promotes Z16 and Z24 to Z32_FLOAT,
3689 * so the depth comparison value isn't clamped for Z16 and
3690 * Z24 anymore. Do it manually here.
3692 * It's unnecessary if the original texture format was
3693 * Z32_FLOAT, but we don't know that here.
3695 if (args
.compare
&& ctx
->ac
.chip_class
>= VI
&& ctx
->abi
->clamp_shadow_reference
)
3696 args
.compare
= ac_build_clamp(&ctx
->ac
, ac_to_float(&ctx
->ac
, args
.compare
));
3698 /* pack derivatives */
3700 int num_src_deriv_channels
, num_dest_deriv_channels
;
3701 switch (instr
->sampler_dim
) {
3702 case GLSL_SAMPLER_DIM_3D
:
3703 case GLSL_SAMPLER_DIM_CUBE
:
3704 num_src_deriv_channels
= 3;
3705 num_dest_deriv_channels
= 3;
3707 case GLSL_SAMPLER_DIM_2D
:
3709 num_src_deriv_channels
= 2;
3710 num_dest_deriv_channels
= 2;
3712 case GLSL_SAMPLER_DIM_1D
:
3713 num_src_deriv_channels
= 1;
3714 if (ctx
->ac
.chip_class
>= GFX9
) {
3715 num_dest_deriv_channels
= 2;
3717 num_dest_deriv_channels
= 1;
3722 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
3723 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
3724 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
3725 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
3726 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
3728 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
3729 args
.derivs
[i
] = ctx
->ac
.f32_0
;
3730 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
3734 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
3735 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
3736 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
3737 if (instr
->coord_components
== 3)
3738 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
3739 ac_prepare_cube_coords(&ctx
->ac
,
3740 instr
->op
== nir_texop_txd
, instr
->is_array
,
3741 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
3744 /* Texture coordinates fixups */
3745 if (instr
->coord_components
> 1 &&
3746 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
3748 instr
->op
!= nir_texop_txf
) {
3749 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
3752 if (instr
->coord_components
> 2 &&
3753 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
3754 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
3755 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
3756 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
3758 instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
3759 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
3762 if (ctx
->ac
.chip_class
>= GFX9
&&
3763 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
3764 instr
->op
!= nir_texop_lod
) {
3765 LLVMValueRef filler
;
3766 if (instr
->op
== nir_texop_txf
)
3767 filler
= ctx
->ac
.i32_0
;
3769 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
3771 if (instr
->is_array
)
3772 args
.coords
[2] = args
.coords
[1];
3773 args
.coords
[1] = filler
;
3776 /* Pack sample index */
3777 if (instr
->op
== nir_texop_txf_ms
&& sample_index
)
3778 args
.coords
[instr
->coord_components
] = sample_index
;
3780 if (instr
->op
== nir_texop_samples_identical
) {
3781 struct ac_image_args txf_args
= { 0 };
3782 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
3784 txf_args
.dmask
= 0xf;
3785 txf_args
.resource
= fmask_ptr
;
3786 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
3787 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
3789 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
3790 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
3794 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
&&
3795 instr
->op
!= nir_texop_txs
) {
3796 unsigned sample_chan
= instr
->is_array
? 3 : 2;
3797 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
3798 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
3799 instr
->is_array
? args
.coords
[2] : NULL
,
3800 args
.coords
[sample_chan
], fmask_ptr
);
3803 if (args
.offset
&& instr
->op
== nir_texop_txf
) {
3804 nir_const_value
*const_offset
=
3805 nir_src_as_const_value(instr
->src
[offset_src
].src
);
3806 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
3807 assert(const_offset
);
3808 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
3809 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
3810 args
.coords
[i
] = LLVMBuildAdd(
3811 ctx
->ac
.builder
, args
.coords
[i
],
3812 LLVMConstInt(ctx
->ac
.i32
, const_offset
->i32
[i
], false), "");
3817 /* TODO TG4 support */
3819 if (instr
->op
== nir_texop_tg4
) {
3820 if (instr
->is_shadow
)
3823 args
.dmask
= 1 << instr
->component
;
3826 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
)
3827 args
.dim
= get_ac_sampler_dim(&ctx
->ac
, instr
->sampler_dim
, instr
->is_array
);
3828 result
= build_tex_intrinsic(ctx
, instr
, &args
);
3830 if (instr
->op
== nir_texop_query_levels
)
3831 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
3832 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
3833 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
3834 instr
->op
!= nir_texop_tg4
)
3835 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
3836 else if (instr
->op
== nir_texop_txs
&&
3837 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
3839 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
3840 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
3841 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
3842 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
3843 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
3844 } else if (ctx
->ac
.chip_class
>= GFX9
&&
3845 instr
->op
== nir_texop_txs
&&
3846 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
3848 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
3849 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
3850 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
3852 } else if (instr
->dest
.ssa
.num_components
!= 4)
3853 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
3857 assert(instr
->dest
.is_ssa
);
3858 result
= ac_to_integer(&ctx
->ac
, result
);
3859 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3864 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
3866 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
3867 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
3869 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3870 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
3873 static void visit_post_phi(struct ac_nir_context
*ctx
,
3874 nir_phi_instr
*instr
,
3875 LLVMValueRef llvm_phi
)
3877 nir_foreach_phi_src(src
, instr
) {
3878 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
3879 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
3881 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
3885 static void phi_post_pass(struct ac_nir_context
*ctx
)
3887 hash_table_foreach(ctx
->phis
, entry
) {
3888 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
3889 (LLVMValueRef
)entry
->data
);
3894 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
3895 const nir_ssa_undef_instr
*instr
)
3897 unsigned num_components
= instr
->def
.num_components
;
3898 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
3901 if (num_components
== 1)
3902 undef
= LLVMGetUndef(type
);
3904 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
3906 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
3909 static void visit_jump(struct ac_llvm_context
*ctx
,
3910 const nir_jump_instr
*instr
)
3912 switch (instr
->type
) {
3913 case nir_jump_break
:
3914 ac_build_break(ctx
);
3916 case nir_jump_continue
:
3917 ac_build_continue(ctx
);
3920 fprintf(stderr
, "Unknown NIR jump instr: ");
3921 nir_print_instr(&instr
->instr
, stderr
);
3922 fprintf(stderr
, "\n");
3928 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
3929 enum glsl_base_type type
)
3933 case GLSL_TYPE_UINT
:
3934 case GLSL_TYPE_BOOL
:
3935 case GLSL_TYPE_SUBROUTINE
:
3937 case GLSL_TYPE_INT16
:
3938 case GLSL_TYPE_UINT16
:
3940 case GLSL_TYPE_FLOAT
:
3942 case GLSL_TYPE_FLOAT16
:
3944 case GLSL_TYPE_INT64
:
3945 case GLSL_TYPE_UINT64
:
3947 case GLSL_TYPE_DOUBLE
:
3950 unreachable("unknown GLSL type");
3955 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
3956 const struct glsl_type
*type
)
3958 if (glsl_type_is_scalar(type
)) {
3959 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
3962 if (glsl_type_is_vector(type
)) {
3963 return LLVMVectorType(
3964 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
3965 glsl_get_vector_elements(type
));
3968 if (glsl_type_is_matrix(type
)) {
3969 return LLVMArrayType(
3970 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
3971 glsl_get_matrix_columns(type
));
3974 if (glsl_type_is_array(type
)) {
3975 return LLVMArrayType(
3976 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
3977 glsl_get_length(type
));
3980 assert(glsl_type_is_struct_or_ifc(type
));
3982 LLVMTypeRef member_types
[glsl_get_length(type
)];
3984 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
3986 glsl_to_llvm_type(ac
,
3987 glsl_get_struct_field(type
, i
));
3990 return LLVMStructTypeInContext(ac
->context
, member_types
,
3991 glsl_get_length(type
), false);
3994 static void visit_deref(struct ac_nir_context
*ctx
,
3995 nir_deref_instr
*instr
)
3997 if (instr
->mode
!= nir_var_mem_shared
&&
3998 instr
->mode
!= nir_var_mem_global
)
4001 LLVMValueRef result
= NULL
;
4002 switch(instr
->deref_type
) {
4003 case nir_deref_type_var
: {
4004 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
4005 result
= entry
->data
;
4008 case nir_deref_type_struct
:
4009 if (instr
->mode
== nir_var_mem_global
) {
4010 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4011 uint64_t offset
= glsl_get_struct_field_offset(parent
->type
,
4012 instr
->strct
.index
);
4013 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4014 LLVMConstInt(ctx
->ac
.i32
, offset
, 0));
4016 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4017 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
4020 case nir_deref_type_array
:
4021 if (instr
->mode
== nir_var_mem_global
) {
4022 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4023 unsigned stride
= glsl_get_explicit_stride(parent
->type
);
4025 if ((glsl_type_is_matrix(parent
->type
) &&
4026 glsl_matrix_type_is_row_major(parent
->type
)) ||
4027 (glsl_type_is_vector(parent
->type
) && stride
== 0))
4028 stride
= type_scalar_size_bytes(parent
->type
);
4031 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4032 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4033 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4035 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4037 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4039 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4040 get_src(ctx
, instr
->arr
.index
));
4043 case nir_deref_type_ptr_as_array
:
4044 if (instr
->mode
== nir_var_mem_global
) {
4045 unsigned stride
= nir_deref_instr_ptr_as_array_stride(instr
);
4047 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4048 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4049 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4051 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4053 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4055 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4056 get_src(ctx
, instr
->arr
.index
));
4059 case nir_deref_type_cast
: {
4060 result
= get_src(ctx
, instr
->parent
);
4062 /* We can't use the structs from LLVM because the shader
4063 * specifies its own offsets. */
4064 LLVMTypeRef pointee_type
= ctx
->ac
.i8
;
4065 if (instr
->mode
== nir_var_mem_shared
)
4066 pointee_type
= glsl_to_llvm_type(&ctx
->ac
, instr
->type
);
4068 unsigned address_space
;
4070 switch(instr
->mode
) {
4071 case nir_var_mem_shared
:
4072 address_space
= AC_ADDR_SPACE_LDS
;
4074 case nir_var_mem_global
:
4075 address_space
= AC_ADDR_SPACE_GLOBAL
;
4078 unreachable("Unhandled address space");
4081 LLVMTypeRef type
= LLVMPointerType(pointee_type
, address_space
);
4083 if (LLVMTypeOf(result
) != type
) {
4084 if (LLVMGetTypeKind(LLVMTypeOf(result
)) == LLVMVectorTypeKind
) {
4085 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
,
4088 result
= LLVMBuildIntToPtr(ctx
->ac
.builder
, result
,
4095 unreachable("Unhandled deref_instr deref type");
4098 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4101 static void visit_cf_list(struct ac_nir_context
*ctx
,
4102 struct exec_list
*list
);
4104 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
4106 LLVMBasicBlockRef llvm_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
4107 nir_foreach_instr(instr
, block
)
4109 switch (instr
->type
) {
4110 case nir_instr_type_alu
:
4111 visit_alu(ctx
, nir_instr_as_alu(instr
));
4113 case nir_instr_type_load_const
:
4114 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
4116 case nir_instr_type_intrinsic
:
4117 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
4119 case nir_instr_type_tex
:
4120 visit_tex(ctx
, nir_instr_as_tex(instr
));
4122 case nir_instr_type_phi
:
4123 visit_phi(ctx
, nir_instr_as_phi(instr
));
4125 case nir_instr_type_ssa_undef
:
4126 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
4128 case nir_instr_type_jump
:
4129 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
4131 case nir_instr_type_deref
:
4132 visit_deref(ctx
, nir_instr_as_deref(instr
));
4135 fprintf(stderr
, "Unknown NIR instr type: ");
4136 nir_print_instr(instr
, stderr
);
4137 fprintf(stderr
, "\n");
4142 _mesa_hash_table_insert(ctx
->defs
, block
, llvm_block
);
4145 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
4147 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
4149 nir_block
*then_block
=
4150 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
4152 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
4154 visit_cf_list(ctx
, &if_stmt
->then_list
);
4156 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
4157 nir_block
*else_block
=
4158 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
4160 ac_build_else(&ctx
->ac
, else_block
->index
);
4161 visit_cf_list(ctx
, &if_stmt
->else_list
);
4164 ac_build_endif(&ctx
->ac
, then_block
->index
);
4167 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
4169 nir_block
*first_loop_block
=
4170 (nir_block
*) exec_list_get_head(&loop
->body
);
4172 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
4174 visit_cf_list(ctx
, &loop
->body
);
4176 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
4179 static void visit_cf_list(struct ac_nir_context
*ctx
,
4180 struct exec_list
*list
)
4182 foreach_list_typed(nir_cf_node
, node
, node
, list
)
4184 switch (node
->type
) {
4185 case nir_cf_node_block
:
4186 visit_block(ctx
, nir_cf_node_as_block(node
));
4189 case nir_cf_node_if
:
4190 visit_if(ctx
, nir_cf_node_as_if(node
));
4193 case nir_cf_node_loop
:
4194 visit_loop(ctx
, nir_cf_node_as_loop(node
));
4204 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
4205 struct ac_shader_abi
*abi
,
4206 struct nir_shader
*nir
,
4207 struct nir_variable
*variable
,
4208 gl_shader_stage stage
)
4210 unsigned output_loc
= variable
->data
.driver_location
/ 4;
4211 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4213 /* tess ctrl has it's own load/store paths for outputs */
4214 if (stage
== MESA_SHADER_TESS_CTRL
)
4217 if (stage
== MESA_SHADER_VERTEX
||
4218 stage
== MESA_SHADER_TESS_EVAL
||
4219 stage
== MESA_SHADER_GEOMETRY
) {
4220 int idx
= variable
->data
.location
+ variable
->data
.index
;
4221 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
4222 int length
= nir
->info
.clip_distance_array_size
+
4223 nir
->info
.cull_distance_array_size
;
4232 bool is_16bit
= glsl_type_is_16bit(glsl_without_array(variable
->type
));
4233 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
4234 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
4235 for (unsigned chan
= 0; chan
< 4; chan
++) {
4236 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
4237 ac_build_alloca_undef(ctx
, type
, "");
4243 setup_locals(struct ac_nir_context
*ctx
,
4244 struct nir_function
*func
)
4247 ctx
->num_locals
= 0;
4248 nir_foreach_variable(variable
, &func
->impl
->locals
) {
4249 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4250 variable
->data
.driver_location
= ctx
->num_locals
* 4;
4251 variable
->data
.location_frac
= 0;
4252 ctx
->num_locals
+= attrib_count
;
4254 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
4258 for (i
= 0; i
< ctx
->num_locals
; i
++) {
4259 for (j
= 0; j
< 4; j
++) {
4260 ctx
->locals
[i
* 4 + j
] =
4261 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
4267 setup_shared(struct ac_nir_context
*ctx
,
4268 struct nir_shader
*nir
)
4270 nir_foreach_variable(variable
, &nir
->shared
) {
4271 LLVMValueRef shared
=
4272 LLVMAddGlobalInAddressSpace(
4273 ctx
->ac
.module
, glsl_to_llvm_type(&ctx
->ac
, variable
->type
),
4274 variable
->name
? variable
->name
: "",
4276 _mesa_hash_table_insert(ctx
->vars
, variable
, shared
);
4280 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
4281 struct nir_shader
*nir
)
4283 struct ac_nir_context ctx
= {};
4284 struct nir_function
*func
;
4289 ctx
.stage
= nir
->info
.stage
;
4291 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
4293 nir_foreach_variable(variable
, &nir
->outputs
)
4294 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
4297 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4298 _mesa_key_pointer_equal
);
4299 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4300 _mesa_key_pointer_equal
);
4301 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4302 _mesa_key_pointer_equal
);
4304 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
4306 nir_index_ssa_defs(func
->impl
);
4307 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
4309 setup_locals(&ctx
, func
);
4311 if (gl_shader_stage_is_compute(nir
->info
.stage
))
4312 setup_shared(&ctx
, nir
);
4314 visit_cf_list(&ctx
, &func
->impl
->body
);
4315 phi_post_pass(&ctx
);
4317 if (!gl_shader_stage_is_compute(nir
->info
.stage
))
4318 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
4323 ralloc_free(ctx
.defs
);
4324 ralloc_free(ctx
.phis
);
4325 ralloc_free(ctx
.vars
);
4329 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
4331 /* While it would be nice not to have this flag, we are constrained
4332 * by the reality that LLVM 5.0 doesn't have working VGPR indexing
4335 bool llvm_has_working_vgpr_indexing
= chip_class
<= VI
;
4337 /* TODO: Indirect indexing of GS inputs is unimplemented.
4339 * TCS and TES load inputs directly from LDS or offchip memory, so
4340 * indirect indexing is trivial.
4342 nir_variable_mode indirect_mask
= 0;
4343 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
4344 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
4345 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
4346 !llvm_has_working_vgpr_indexing
)) {
4347 indirect_mask
|= nir_var_shader_in
;
4349 if (!llvm_has_working_vgpr_indexing
&&
4350 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
4351 indirect_mask
|= nir_var_shader_out
;
4353 /* TODO: We shouldn't need to do this, however LLVM isn't currently
4354 * smart enough to handle indirects without causing excess spilling
4355 * causing the gpu to hang.
4357 * See the following thread for more details of the problem:
4358 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
4360 indirect_mask
|= nir_var_function_temp
;
4362 nir_lower_indirect_derefs(nir
, indirect_mask
);
4366 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
4368 if (intrin
->intrinsic
!= nir_intrinsic_store_deref
)
4372 nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[0]));
4374 if (var
->data
.mode
!= nir_var_shader_out
)
4377 unsigned writemask
= 0;
4378 const int location
= var
->data
.location
;
4379 unsigned first_component
= var
->data
.location_frac
;
4380 unsigned num_comps
= intrin
->dest
.ssa
.num_components
;
4382 if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
4383 writemask
= ((1 << (num_comps
+ 1)) - 1) << first_component
;
4384 else if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
4385 writemask
= (((1 << (num_comps
+ 1)) - 1) << first_component
) << 4;
4391 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
4392 unsigned *cond_block_tf_writemask
,
4393 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
4395 switch (cf_node
->type
) {
4396 case nir_cf_node_block
: {
4397 nir_block
*block
= nir_cf_node_as_block(cf_node
);
4398 nir_foreach_instr(instr
, block
) {
4399 if (instr
->type
!= nir_instr_type_intrinsic
)
4402 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
4403 if (intrin
->intrinsic
== nir_intrinsic_barrier
) {
4405 /* If we find a barrier in nested control flow put this in the
4406 * too hard basket. In GLSL this is not possible but it is in
4410 *tessfactors_are_def_in_all_invocs
= false;
4414 /* The following case must be prevented:
4415 * gl_TessLevelInner = ...;
4417 * if (gl_InvocationID == 1)
4418 * gl_TessLevelInner = ...;
4420 * If you consider disjoint code segments separated by barriers, each
4421 * such segment that writes tess factor channels should write the same
4422 * channels in all codepaths within that segment.
4424 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
4425 /* Accumulate the result: */
4426 *tessfactors_are_def_in_all_invocs
&=
4427 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
4429 /* Analyze the next code segment from scratch. */
4430 *upper_block_tf_writemask
= 0;
4431 *cond_block_tf_writemask
= 0;
4434 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
4439 case nir_cf_node_if
: {
4440 unsigned then_tessfactor_writemask
= 0;
4441 unsigned else_tessfactor_writemask
= 0;
4443 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
4444 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
4445 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
4446 cond_block_tf_writemask
,
4447 tessfactors_are_def_in_all_invocs
, true);
4450 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
4451 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
4452 cond_block_tf_writemask
,
4453 tessfactors_are_def_in_all_invocs
, true);
4456 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
4457 /* If both statements write the same tess factor channels,
4458 * we can say that the upper block writes them too.
4460 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
4461 else_tessfactor_writemask
;
4462 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
4463 else_tessfactor_writemask
;
4468 case nir_cf_node_loop
: {
4469 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
4470 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
4471 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
4472 cond_block_tf_writemask
,
4473 tessfactors_are_def_in_all_invocs
, true);
4479 unreachable("unknown cf node type");
4484 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
4486 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
4488 /* The pass works as follows:
4489 * If all codepaths write tess factors, we can say that all
4490 * invocations define tess factors.
4492 * Each tess factor channel is tracked separately.
4494 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
4495 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
4497 /* Initial value = true. Here the pass will accumulate results from
4498 * multiple segments surrounded by barriers. If tess factors aren't
4499 * written at all, it's a shader bug and we don't care if this will be
4502 bool tessfactors_are_def_in_all_invocs
= true;
4504 nir_foreach_function(function
, nir
) {
4505 if (function
->impl
) {
4506 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
4507 scan_tess_ctrl(node
, &main_block_tf_writemask
,
4508 &cond_block_tf_writemask
,
4509 &tessfactors_are_def_in_all_invocs
,
4515 /* Accumulate the result for the last code segment separated by a
4518 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
4519 tessfactors_are_def_in_all_invocs
&=
4520 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
4523 return tessfactors_are_def_in_all_invocs
;