2 * Copyright © 2016 Bas Nieuwenhuizen
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 #include <llvm/Config/llvm-config.h>
26 #include "ac_nir_to_llvm.h"
27 #include "ac_llvm_build.h"
28 #include "ac_llvm_util.h"
29 #include "ac_binary.h"
32 #include "nir/nir_deref.h"
33 #include "util/bitscan.h"
34 #include "util/u_math.h"
35 #include "ac_shader_abi.h"
36 #include "ac_shader_util.h"
38 struct ac_nir_context
{
39 struct ac_llvm_context ac
;
40 struct ac_shader_abi
*abi
;
41 const struct ac_shader_args
*args
;
43 gl_shader_stage stage
;
46 LLVMValueRef
*ssa_defs
;
49 LLVMValueRef constant_data
;
51 struct hash_table
*defs
;
52 struct hash_table
*phis
;
53 struct hash_table
*vars
;
55 LLVMValueRef main_function
;
56 LLVMBasicBlockRef continue_block
;
57 LLVMBasicBlockRef break_block
;
63 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
64 nir_deref_instr
*deref_instr
,
65 enum ac_descriptor_type desc_type
,
66 const nir_instr
*instr
,
67 bool image
, bool write
);
70 build_store_values_extended(struct ac_llvm_context
*ac
,
73 unsigned value_stride
,
76 LLVMBuilderRef builder
= ac
->builder
;
79 for (i
= 0; i
< value_count
; i
++) {
80 LLVMValueRef ptr
= values
[i
* value_stride
];
81 LLVMValueRef index
= LLVMConstInt(ac
->i32
, i
, false);
82 LLVMValueRef value
= LLVMBuildExtractElement(builder
, vec
, index
, "");
83 LLVMBuildStore(builder
, value
, ptr
);
87 static LLVMTypeRef
get_def_type(struct ac_nir_context
*ctx
,
88 const nir_ssa_def
*def
)
90 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, def
->bit_size
);
91 if (def
->num_components
> 1) {
92 type
= LLVMVectorType(type
, def
->num_components
);
97 static LLVMValueRef
get_src(struct ac_nir_context
*nir
, nir_src src
)
100 return nir
->ssa_defs
[src
.ssa
->index
];
104 get_memory_ptr(struct ac_nir_context
*ctx
, nir_src src
, unsigned bit_size
)
106 LLVMValueRef ptr
= get_src(ctx
, src
);
107 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ctx
->ac
.lds
, &ptr
, 1, "");
108 int addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
110 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, bit_size
);
112 return LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
113 LLVMPointerType(type
, addr_space
), "");
116 static LLVMBasicBlockRef
get_block(struct ac_nir_context
*nir
,
117 const struct nir_block
*b
)
119 struct hash_entry
*entry
= _mesa_hash_table_search(nir
->defs
, b
);
120 return (LLVMBasicBlockRef
)entry
->data
;
123 static LLVMValueRef
get_alu_src(struct ac_nir_context
*ctx
,
125 unsigned num_components
)
127 LLVMValueRef value
= get_src(ctx
, src
.src
);
128 bool need_swizzle
= false;
131 unsigned src_components
= ac_get_llvm_num_components(value
);
132 for (unsigned i
= 0; i
< num_components
; ++i
) {
133 assert(src
.swizzle
[i
] < src_components
);
134 if (src
.swizzle
[i
] != i
)
138 if (need_swizzle
|| num_components
!= src_components
) {
139 LLVMValueRef masks
[] = {
140 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[0], false),
141 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[1], false),
142 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[2], false),
143 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[3], false)};
145 if (src_components
> 1 && num_components
== 1) {
146 value
= LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
148 } else if (src_components
== 1 && num_components
> 1) {
149 LLVMValueRef values
[] = {value
, value
, value
, value
};
150 value
= ac_build_gather_values(&ctx
->ac
, values
, num_components
);
152 LLVMValueRef swizzle
= LLVMConstVector(masks
, num_components
);
153 value
= LLVMBuildShuffleVector(ctx
->ac
.builder
, value
, value
,
162 static LLVMValueRef
emit_int_cmp(struct ac_llvm_context
*ctx
,
163 LLVMIntPredicate pred
, LLVMValueRef src0
,
166 LLVMValueRef result
= LLVMBuildICmp(ctx
->builder
, pred
, src0
, src1
, "");
167 return LLVMBuildSelect(ctx
->builder
, result
,
168 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
172 static LLVMValueRef
emit_float_cmp(struct ac_llvm_context
*ctx
,
173 LLVMRealPredicate pred
, LLVMValueRef src0
,
177 src0
= ac_to_float(ctx
, src0
);
178 src1
= ac_to_float(ctx
, src1
);
179 result
= LLVMBuildFCmp(ctx
->builder
, pred
, src0
, src1
, "");
180 return LLVMBuildSelect(ctx
->builder
, result
,
181 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
185 static LLVMValueRef
emit_intrin_1f_param(struct ac_llvm_context
*ctx
,
187 LLVMTypeRef result_type
,
191 LLVMValueRef params
[] = {
192 ac_to_float(ctx
, src0
),
195 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
196 ac_get_elem_bits(ctx
, result_type
));
197 assert(length
< sizeof(name
));
198 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 1, AC_FUNC_ATTR_READNONE
);
201 static LLVMValueRef
emit_intrin_2f_param(struct ac_llvm_context
*ctx
,
203 LLVMTypeRef result_type
,
204 LLVMValueRef src0
, LLVMValueRef src1
)
207 LLVMValueRef params
[] = {
208 ac_to_float(ctx
, src0
),
209 ac_to_float(ctx
, src1
),
212 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
213 ac_get_elem_bits(ctx
, result_type
));
214 assert(length
< sizeof(name
));
215 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 2, AC_FUNC_ATTR_READNONE
);
218 static LLVMValueRef
emit_intrin_3f_param(struct ac_llvm_context
*ctx
,
220 LLVMTypeRef result_type
,
221 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
224 LLVMValueRef params
[] = {
225 ac_to_float(ctx
, src0
),
226 ac_to_float(ctx
, src1
),
227 ac_to_float(ctx
, src2
),
230 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
231 ac_get_elem_bits(ctx
, result_type
));
232 assert(length
< sizeof(name
));
233 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 3, AC_FUNC_ATTR_READNONE
);
236 static LLVMValueRef
emit_bcsel(struct ac_llvm_context
*ctx
,
237 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
239 LLVMTypeRef src1_type
= LLVMTypeOf(src1
);
240 LLVMTypeRef src2_type
= LLVMTypeOf(src2
);
242 assert(LLVMGetTypeKind(LLVMTypeOf(src0
)) != LLVMVectorTypeKind
);
244 if (LLVMGetTypeKind(src1_type
) == LLVMPointerTypeKind
&&
245 LLVMGetTypeKind(src2_type
) != LLVMPointerTypeKind
) {
246 src2
= LLVMBuildIntToPtr(ctx
->builder
, src2
, src1_type
, "");
247 } else if (LLVMGetTypeKind(src2_type
) == LLVMPointerTypeKind
&&
248 LLVMGetTypeKind(src1_type
) != LLVMPointerTypeKind
) {
249 src1
= LLVMBuildIntToPtr(ctx
->builder
, src1
, src2_type
, "");
252 LLVMValueRef v
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
,
254 return LLVMBuildSelect(ctx
->builder
, v
,
255 ac_to_integer_or_pointer(ctx
, src1
),
256 ac_to_integer_or_pointer(ctx
, src2
), "");
259 static LLVMValueRef
emit_iabs(struct ac_llvm_context
*ctx
,
262 return ac_build_imax(ctx
, src0
, LLVMBuildNeg(ctx
->builder
, src0
, ""));
265 static LLVMValueRef
emit_uint_carry(struct ac_llvm_context
*ctx
,
267 LLVMValueRef src0
, LLVMValueRef src1
)
269 LLVMTypeRef ret_type
;
270 LLVMTypeRef types
[] = { ctx
->i32
, ctx
->i1
};
272 LLVMValueRef params
[] = { src0
, src1
};
273 ret_type
= LLVMStructTypeInContext(ctx
->context
, types
,
276 res
= ac_build_intrinsic(ctx
, intrin
, ret_type
,
277 params
, 2, AC_FUNC_ATTR_READNONE
);
279 res
= LLVMBuildExtractValue(ctx
->builder
, res
, 1, "");
280 res
= LLVMBuildZExt(ctx
->builder
, res
, ctx
->i32
, "");
284 static LLVMValueRef
emit_b2f(struct ac_llvm_context
*ctx
,
288 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
,
289 LLVMBuildBitCast(ctx
->builder
, LLVMConstReal(ctx
->f32
, 1.0), ctx
->i32
, ""),
291 result
= LLVMBuildBitCast(ctx
->builder
, result
, ctx
->f32
, "");
295 return LLVMBuildFPTrunc(ctx
->builder
, result
, ctx
->f16
, "");
299 return LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f64
, "");
301 unreachable("Unsupported bit size.");
305 static LLVMValueRef
emit_f2b(struct ac_llvm_context
*ctx
,
308 src0
= ac_to_float(ctx
, src0
);
309 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
310 return LLVMBuildSExt(ctx
->builder
,
311 LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
, src0
, zero
, ""),
315 static LLVMValueRef
emit_b2i(struct ac_llvm_context
*ctx
,
319 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
, ctx
->i32_1
, "");
323 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i8
, "");
325 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i16
, "");
329 return LLVMBuildZExt(ctx
->builder
, result
, ctx
->i64
, "");
331 unreachable("Unsupported bit size.");
335 static LLVMValueRef
emit_i2b(struct ac_llvm_context
*ctx
,
338 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
339 return LLVMBuildSExt(ctx
->builder
,
340 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
, zero
, ""),
344 static LLVMValueRef
emit_f2f16(struct ac_llvm_context
*ctx
,
348 LLVMValueRef cond
= NULL
;
350 src0
= ac_to_float(ctx
, src0
);
351 result
= LLVMBuildFPTrunc(ctx
->builder
, src0
, ctx
->f16
, "");
353 if (ctx
->chip_class
>= GFX8
) {
354 LLVMValueRef args
[2];
355 /* Check if the result is a denormal - and flush to 0 if so. */
357 args
[1] = LLVMConstInt(ctx
->i32
, N_SUBNORMAL
| P_SUBNORMAL
, false);
358 cond
= ac_build_intrinsic(ctx
, "llvm.amdgcn.class.f16", ctx
->i1
, args
, 2, AC_FUNC_ATTR_READNONE
);
361 /* need to convert back up to f32 */
362 result
= LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f32
, "");
364 if (ctx
->chip_class
>= GFX8
)
365 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
368 /* 0x38800000 is smallest half float value (2^-14) in 32-bit float,
369 * so compare the result and flush to 0 if it's smaller.
371 LLVMValueRef temp
, cond2
;
372 temp
= emit_intrin_1f_param(ctx
, "llvm.fabs", ctx
->f32
, result
);
373 cond
= LLVMBuildFCmp(ctx
->builder
, LLVMRealOGT
,
374 LLVMBuildBitCast(ctx
->builder
, LLVMConstInt(ctx
->i32
, 0x38800000, false), ctx
->f32
, ""),
376 cond2
= LLVMBuildFCmp(ctx
->builder
, LLVMRealONE
,
377 temp
, ctx
->f32_0
, "");
378 cond
= LLVMBuildAnd(ctx
->builder
, cond
, cond2
, "");
379 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
384 static LLVMValueRef
emit_umul_high(struct ac_llvm_context
*ctx
,
385 LLVMValueRef src0
, LLVMValueRef src1
)
387 LLVMValueRef dst64
, result
;
388 src0
= LLVMBuildZExt(ctx
->builder
, src0
, ctx
->i64
, "");
389 src1
= LLVMBuildZExt(ctx
->builder
, src1
, ctx
->i64
, "");
391 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
392 dst64
= LLVMBuildLShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
393 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
397 static LLVMValueRef
emit_imul_high(struct ac_llvm_context
*ctx
,
398 LLVMValueRef src0
, LLVMValueRef src1
)
400 LLVMValueRef dst64
, result
;
401 src0
= LLVMBuildSExt(ctx
->builder
, src0
, ctx
->i64
, "");
402 src1
= LLVMBuildSExt(ctx
->builder
, src1
, ctx
->i64
, "");
404 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
405 dst64
= LLVMBuildAShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
406 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
410 static LLVMValueRef
emit_bfm(struct ac_llvm_context
*ctx
,
411 LLVMValueRef bits
, LLVMValueRef offset
)
413 /* mask = ((1 << bits) - 1) << offset */
414 return LLVMBuildShl(ctx
->builder
,
415 LLVMBuildSub(ctx
->builder
,
416 LLVMBuildShl(ctx
->builder
,
423 static LLVMValueRef
emit_bitfield_select(struct ac_llvm_context
*ctx
,
424 LLVMValueRef mask
, LLVMValueRef insert
,
428 * (mask & insert) | (~mask & base) = base ^ (mask & (insert ^ base))
429 * Use the right-hand side, which the LLVM backend can convert to V_BFI.
431 return LLVMBuildXor(ctx
->builder
, base
,
432 LLVMBuildAnd(ctx
->builder
, mask
,
433 LLVMBuildXor(ctx
->builder
, insert
, base
, ""), ""), "");
436 static LLVMValueRef
emit_pack_2x16(struct ac_llvm_context
*ctx
,
438 LLVMValueRef (*pack
)(struct ac_llvm_context
*ctx
,
439 LLVMValueRef args
[2]))
441 LLVMValueRef comp
[2];
443 src0
= ac_to_float(ctx
, src0
);
444 comp
[0] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_0
, "");
445 comp
[1] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_1
, "");
447 return LLVMBuildBitCast(ctx
->builder
, pack(ctx
, comp
), ctx
->i32
, "");
450 static LLVMValueRef
emit_unpack_half_2x16(struct ac_llvm_context
*ctx
,
453 LLVMValueRef const16
= LLVMConstInt(ctx
->i32
, 16, false);
454 LLVMValueRef temps
[2], val
;
457 for (i
= 0; i
< 2; i
++) {
458 val
= i
== 1 ? LLVMBuildLShr(ctx
->builder
, src0
, const16
, "") : src0
;
459 val
= LLVMBuildTrunc(ctx
->builder
, val
, ctx
->i16
, "");
460 val
= LLVMBuildBitCast(ctx
->builder
, val
, ctx
->f16
, "");
461 temps
[i
] = LLVMBuildFPExt(ctx
->builder
, val
, ctx
->f32
, "");
463 return ac_build_gather_values(ctx
, temps
, 2);
466 static LLVMValueRef
emit_ddxy(struct ac_nir_context
*ctx
,
474 if (op
== nir_op_fddx_fine
)
475 mask
= AC_TID_MASK_LEFT
;
476 else if (op
== nir_op_fddy_fine
)
477 mask
= AC_TID_MASK_TOP
;
479 mask
= AC_TID_MASK_TOP_LEFT
;
481 /* for DDX we want to next X pixel, DDY next Y pixel. */
482 if (op
== nir_op_fddx_fine
||
483 op
== nir_op_fddx_coarse
||
489 result
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, src0
);
493 static void visit_alu(struct ac_nir_context
*ctx
, const nir_alu_instr
*instr
)
495 LLVMValueRef src
[4], result
= NULL
;
496 unsigned num_components
= instr
->dest
.dest
.ssa
.num_components
;
497 unsigned src_components
;
498 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.dest
.ssa
);
500 assert(nir_op_infos
[instr
->op
].num_inputs
<= ARRAY_SIZE(src
));
507 case nir_op_pack_half_2x16
:
508 case nir_op_pack_snorm_2x16
:
509 case nir_op_pack_unorm_2x16
:
512 case nir_op_unpack_half_2x16
:
515 case nir_op_cube_face_coord
:
516 case nir_op_cube_face_index
:
520 src_components
= num_components
;
523 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
524 src
[i
] = get_alu_src(ctx
, instr
->src
[i
], src_components
);
531 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
532 result
= LLVMBuildFNeg(ctx
->ac
.builder
, src
[0], "");
533 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO
) {
534 /* fneg will be optimized by backend compiler with sign
535 * bit removed via XOR. This is probably a LLVM bug.
537 result
= ac_build_canonicalize(&ctx
->ac
, result
,
538 instr
->dest
.dest
.ssa
.bit_size
);
542 result
= LLVMBuildNeg(ctx
->ac
.builder
, src
[0], "");
545 result
= LLVMBuildNot(ctx
->ac
.builder
, src
[0], "");
548 result
= LLVMBuildAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
551 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
552 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
553 result
= LLVMBuildFAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
556 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
557 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
558 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], src
[1], "");
561 result
= LLVMBuildSub(ctx
->ac
.builder
, src
[0], src
[1], "");
564 result
= LLVMBuildMul(ctx
->ac
.builder
, src
[0], src
[1], "");
567 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
570 result
= LLVMBuildURem(ctx
->ac
.builder
, src
[0], src
[1], "");
573 /* lower_fmod only lower 16-bit and 32-bit fmod */
574 assert(instr
->dest
.dest
.ssa
.bit_size
== 64);
575 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
576 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
577 result
= ac_build_fdiv(&ctx
->ac
, src
[0], src
[1]);
578 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
579 ac_to_float_type(&ctx
->ac
, def_type
), result
);
580 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[1] , result
, "");
581 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], result
, "");
584 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
587 result
= LLVMBuildSDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
590 result
= LLVMBuildUDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
593 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
594 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
595 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[0], src
[1], "");
598 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
599 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(src
[0]), 1.0), src
[0]);
602 result
= LLVMBuildAnd(ctx
->ac
.builder
, src
[0], src
[1], "");
605 result
= LLVMBuildOr(ctx
->ac
.builder
, src
[0], src
[1], "");
608 result
= LLVMBuildXor(ctx
->ac
.builder
, src
[0], src
[1], "");
611 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
612 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
613 LLVMTypeOf(src
[0]), "");
614 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
615 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
616 LLVMTypeOf(src
[0]), "");
617 result
= LLVMBuildShl(ctx
->ac
.builder
, src
[0], src
[1], "");
620 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
621 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
622 LLVMTypeOf(src
[0]), "");
623 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
624 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
625 LLVMTypeOf(src
[0]), "");
626 result
= LLVMBuildAShr(ctx
->ac
.builder
, src
[0], src
[1], "");
629 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
630 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
631 LLVMTypeOf(src
[0]), "");
632 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
633 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
634 LLVMTypeOf(src
[0]), "");
635 result
= LLVMBuildLShr(ctx
->ac
.builder
, src
[0], src
[1], "");
638 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
641 result
= emit_int_cmp(&ctx
->ac
, LLVMIntNE
, src
[0], src
[1]);
644 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, src
[0], src
[1]);
647 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSGE
, src
[0], src
[1]);
650 result
= emit_int_cmp(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
653 result
= emit_int_cmp(&ctx
->ac
, LLVMIntUGE
, src
[0], src
[1]);
656 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOEQ
, src
[0], src
[1]);
659 result
= emit_float_cmp(&ctx
->ac
, LLVMRealUNE
, src
[0], src
[1]);
662 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOLT
, src
[0], src
[1]);
665 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOGE
, src
[0], src
[1]);
668 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.fabs",
669 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
670 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO
) {
671 /* fabs will be optimized by backend compiler with sign
672 * bit removed via AND.
674 result
= ac_build_canonicalize(&ctx
->ac
, result
,
675 instr
->dest
.dest
.ssa
.bit_size
);
679 result
= emit_iabs(&ctx
->ac
, src
[0]);
682 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
685 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
688 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
691 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
694 result
= ac_build_isign(&ctx
->ac
, src
[0],
695 instr
->dest
.dest
.ssa
.bit_size
);
698 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
699 result
= ac_build_fsign(&ctx
->ac
, src
[0],
700 instr
->dest
.dest
.ssa
.bit_size
);
703 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
704 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
707 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.trunc",
708 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
711 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.ceil",
712 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
714 case nir_op_fround_even
:
715 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.rint",
716 ac_to_float_type(&ctx
->ac
, def_type
),src
[0]);
719 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
720 result
= ac_build_fract(&ctx
->ac
, src
[0],
721 instr
->dest
.dest
.ssa
.bit_size
);
724 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sin",
725 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
728 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.cos",
729 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
732 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
733 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
736 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.exp2",
737 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
740 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.log2",
741 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
744 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
745 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
746 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(result
), 1.0), result
);
748 case nir_op_frexp_exp
:
749 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
750 result
= ac_build_frexp_exp(&ctx
->ac
, src
[0],
751 ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])));
752 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) == 16)
753 result
= LLVMBuildSExt(ctx
->ac
.builder
, result
,
756 case nir_op_frexp_sig
:
757 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
758 result
= ac_build_frexp_mant(&ctx
->ac
, src
[0],
759 instr
->dest
.dest
.ssa
.bit_size
);
762 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.pow",
763 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
766 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
767 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
768 if (ctx
->ac
.chip_class
< GFX9
&&
769 instr
->dest
.dest
.ssa
.bit_size
== 32) {
770 /* Only pre-GFX9 chips do not flush denorms. */
771 result
= ac_build_canonicalize(&ctx
->ac
, result
,
772 instr
->dest
.dest
.ssa
.bit_size
);
776 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
777 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
778 if (ctx
->ac
.chip_class
< GFX9
&&
779 instr
->dest
.dest
.ssa
.bit_size
== 32) {
780 /* Only pre-GFX9 chips do not flush denorms. */
781 result
= ac_build_canonicalize(&ctx
->ac
, result
,
782 instr
->dest
.dest
.ssa
.bit_size
);
786 /* FMA is better on GFX10, because it has FMA units instead of MUL-ADD units. */
787 result
= emit_intrin_3f_param(&ctx
->ac
, ctx
->ac
.chip_class
>= GFX10
? "llvm.fma" : "llvm.fmuladd",
788 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1], src
[2]);
791 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
792 if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 32)
793 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f32", ctx
->ac
.f32
, src
, 2, AC_FUNC_ATTR_READNONE
);
794 else if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 16)
795 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f16", ctx
->ac
.f16
, src
, 2, AC_FUNC_ATTR_READNONE
);
797 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f64", ctx
->ac
.f64
, src
, 2, AC_FUNC_ATTR_READNONE
);
800 result
= emit_bfm(&ctx
->ac
, src
[0], src
[1]);
802 case nir_op_bitfield_select
:
803 result
= emit_bitfield_select(&ctx
->ac
, src
[0], src
[1], src
[2]);
806 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], false);
809 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], true);
811 case nir_op_bitfield_reverse
:
812 result
= ac_build_bitfield_reverse(&ctx
->ac
, src
[0]);
814 case nir_op_bit_count
:
815 result
= ac_build_bit_count(&ctx
->ac
, src
[0]);
820 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
821 src
[i
] = ac_to_integer(&ctx
->ac
, src
[i
]);
822 result
= ac_build_gather_values(&ctx
->ac
, src
, num_components
);
828 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
829 result
= LLVMBuildFPToSI(ctx
->ac
.builder
, src
[0], def_type
, "");
835 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
836 result
= LLVMBuildFPToUI(ctx
->ac
.builder
, src
[0], def_type
, "");
841 result
= LLVMBuildSIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
846 result
= LLVMBuildUIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
848 case nir_op_f2f16_rtz
:
849 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
850 if (LLVMTypeOf(src
[0]) == ctx
->ac
.f64
)
851 src
[0] = LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ctx
->ac
.f32
, "");
852 LLVMValueRef param
[2] = { src
[0], ctx
->ac
.f32_0
};
853 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, param
);
854 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
856 case nir_op_f2f16_rtne
:
860 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
861 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
862 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
864 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
870 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
871 result
= LLVMBuildZExt(ctx
->ac
.builder
, src
[0], def_type
, "");
873 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
879 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
880 result
= LLVMBuildSExt(ctx
->ac
.builder
, src
[0], def_type
, "");
882 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
885 result
= emit_bcsel(&ctx
->ac
, src
[0], src
[1], src
[2]);
887 case nir_op_find_lsb
:
888 result
= ac_find_lsb(&ctx
->ac
, ctx
->ac
.i32
, src
[0]);
890 case nir_op_ufind_msb
:
891 result
= ac_build_umsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
893 case nir_op_ifind_msb
:
894 result
= ac_build_imsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
896 case nir_op_uadd_carry
:
897 result
= emit_uint_carry(&ctx
->ac
, "llvm.uadd.with.overflow.i32", src
[0], src
[1]);
899 case nir_op_usub_borrow
:
900 result
= emit_uint_carry(&ctx
->ac
, "llvm.usub.with.overflow.i32", src
[0], src
[1]);
905 result
= emit_b2f(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
908 result
= emit_f2b(&ctx
->ac
, src
[0]);
914 result
= emit_b2i(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
917 result
= emit_i2b(&ctx
->ac
, src
[0]);
919 case nir_op_fquantize2f16
:
920 result
= emit_f2f16(&ctx
->ac
, src
[0]);
922 case nir_op_umul_high
:
923 result
= emit_umul_high(&ctx
->ac
, src
[0], src
[1]);
925 case nir_op_imul_high
:
926 result
= emit_imul_high(&ctx
->ac
, src
[0], src
[1]);
928 case nir_op_pack_half_2x16
:
929 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pkrtz_f16
);
931 case nir_op_pack_snorm_2x16
:
932 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_i16
);
934 case nir_op_pack_unorm_2x16
:
935 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_u16
);
937 case nir_op_unpack_half_2x16
:
938 result
= emit_unpack_half_2x16(&ctx
->ac
, src
[0]);
942 case nir_op_fddx_fine
:
943 case nir_op_fddy_fine
:
944 case nir_op_fddx_coarse
:
945 case nir_op_fddy_coarse
:
946 result
= emit_ddxy(ctx
, instr
->op
, src
[0]);
949 case nir_op_unpack_64_2x32_split_x
: {
950 assert(ac_get_llvm_num_components(src
[0]) == 1);
951 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
954 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
959 case nir_op_unpack_64_2x32_split_y
: {
960 assert(ac_get_llvm_num_components(src
[0]) == 1);
961 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
964 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
969 case nir_op_pack_64_2x32_split
: {
970 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
971 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i64
, "");
975 case nir_op_pack_32_2x16_split
: {
976 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
977 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
981 case nir_op_unpack_32_2x16_split_x
: {
982 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
985 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
990 case nir_op_unpack_32_2x16_split_y
: {
991 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
994 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
999 case nir_op_cube_face_coord
: {
1000 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1001 LLVMValueRef results
[2];
1003 for (unsigned chan
= 0; chan
< 3; chan
++)
1004 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1005 results
[0] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubesc",
1006 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1007 results
[1] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubetc",
1008 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1009 LLVMValueRef ma
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubema",
1010 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1011 results
[0] = ac_build_fdiv(&ctx
->ac
, results
[0], ma
);
1012 results
[1] = ac_build_fdiv(&ctx
->ac
, results
[1], ma
);
1013 LLVMValueRef offset
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
1014 results
[0] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[0], offset
, "");
1015 results
[1] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[1], offset
, "");
1016 result
= ac_build_gather_values(&ctx
->ac
, results
, 2);
1020 case nir_op_cube_face_index
: {
1021 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1023 for (unsigned chan
= 0; chan
< 3; chan
++)
1024 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1025 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubeid",
1026 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1031 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1032 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1033 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1034 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1037 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1038 result
= ac_build_umin(&ctx
->ac
, result
, src
[2]);
1041 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1042 result
= ac_build_imin(&ctx
->ac
, result
, src
[2]);
1045 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1046 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1047 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1048 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1051 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1052 result
= ac_build_umax(&ctx
->ac
, result
, src
[2]);
1055 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1056 result
= ac_build_imax(&ctx
->ac
, result
, src
[2]);
1058 case nir_op_fmed3
: {
1059 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1060 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
1061 src
[2] = ac_to_float(&ctx
->ac
, src
[2]);
1062 result
= ac_build_fmed3(&ctx
->ac
, src
[0], src
[1], src
[2],
1063 instr
->dest
.dest
.ssa
.bit_size
);
1066 case nir_op_imed3
: {
1067 LLVMValueRef tmp1
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1068 LLVMValueRef tmp2
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1069 tmp2
= ac_build_imin(&ctx
->ac
, tmp2
, src
[2]);
1070 result
= ac_build_imax(&ctx
->ac
, tmp1
, tmp2
);
1073 case nir_op_umed3
: {
1074 LLVMValueRef tmp1
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1075 LLVMValueRef tmp2
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1076 tmp2
= ac_build_umin(&ctx
->ac
, tmp2
, src
[2]);
1077 result
= ac_build_umax(&ctx
->ac
, tmp1
, tmp2
);
1082 fprintf(stderr
, "Unknown NIR alu instr: ");
1083 nir_print_instr(&instr
->instr
, stderr
);
1084 fprintf(stderr
, "\n");
1089 assert(instr
->dest
.dest
.is_ssa
);
1090 result
= ac_to_integer_or_pointer(&ctx
->ac
, result
);
1091 ctx
->ssa_defs
[instr
->dest
.dest
.ssa
.index
] = result
;
1095 static void visit_load_const(struct ac_nir_context
*ctx
,
1096 const nir_load_const_instr
*instr
)
1098 LLVMValueRef values
[4], value
= NULL
;
1099 LLVMTypeRef element_type
=
1100 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
1102 for (unsigned i
= 0; i
< instr
->def
.num_components
; ++i
) {
1103 switch (instr
->def
.bit_size
) {
1105 values
[i
] = LLVMConstInt(element_type
,
1106 instr
->value
[i
].u8
, false);
1109 values
[i
] = LLVMConstInt(element_type
,
1110 instr
->value
[i
].u16
, false);
1113 values
[i
] = LLVMConstInt(element_type
,
1114 instr
->value
[i
].u32
, false);
1117 values
[i
] = LLVMConstInt(element_type
,
1118 instr
->value
[i
].u64
, false);
1122 "unsupported nir load_const bit_size: %d\n",
1123 instr
->def
.bit_size
);
1127 if (instr
->def
.num_components
> 1) {
1128 value
= LLVMConstVector(values
, instr
->def
.num_components
);
1132 ctx
->ssa_defs
[instr
->def
.index
] = value
;
1136 get_buffer_size(struct ac_nir_context
*ctx
, LLVMValueRef descriptor
, bool in_elements
)
1139 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1140 LLVMConstInt(ctx
->ac
.i32
, 2, false), "");
1143 if (ctx
->ac
.chip_class
== GFX8
&& in_elements
) {
1144 /* On GFX8, the descriptor contains the size in bytes,
1145 * but TXQ must return the size in elements.
1146 * The stride is always non-zero for resources using TXQ.
1148 LLVMValueRef stride
=
1149 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1151 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
,
1152 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
1153 stride
= LLVMBuildAnd(ctx
->ac
.builder
, stride
,
1154 LLVMConstInt(ctx
->ac
.i32
, 0x3fff, false), "");
1156 size
= LLVMBuildUDiv(ctx
->ac
.builder
, size
, stride
, "");
1161 /* Gather4 should follow the same rules as bilinear filtering, but the hardware
1162 * incorrectly forces nearest filtering if the texture format is integer.
1163 * The only effect it has on Gather4, which always returns 4 texels for
1164 * bilinear filtering, is that the final coordinates are off by 0.5 of
1167 * The workaround is to subtract 0.5 from the unnormalized coordinates,
1168 * or (0.5 / size) from the normalized coordinates.
1170 * However, cube textures with 8_8_8_8 data formats require a different
1171 * workaround of overriding the num format to USCALED/SSCALED. This would lose
1172 * precision in 32-bit data formats, so it needs to be applied dynamically at
1173 * runtime. In this case, return an i1 value that indicates whether the
1174 * descriptor was overridden (and hence a fixup of the sampler result is needed).
1176 static LLVMValueRef
lower_gather4_integer(struct ac_llvm_context
*ctx
,
1178 struct ac_image_args
*args
,
1179 const nir_tex_instr
*instr
)
1181 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1182 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1183 LLVMValueRef wa_8888
= NULL
;
1184 LLVMValueRef half_texel
[2];
1185 LLVMValueRef result
;
1187 assert(stype
== GLSL_TYPE_INT
|| stype
== GLSL_TYPE_UINT
);
1189 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1190 LLVMValueRef formats
;
1191 LLVMValueRef data_format
;
1192 LLVMValueRef wa_formats
;
1194 formats
= LLVMBuildExtractElement(ctx
->builder
, args
->resource
, ctx
->i32_1
, "");
1196 data_format
= LLVMBuildLShr(ctx
->builder
, formats
,
1197 LLVMConstInt(ctx
->i32
, 20, false), "");
1198 data_format
= LLVMBuildAnd(ctx
->builder
, data_format
,
1199 LLVMConstInt(ctx
->i32
, (1u << 6) - 1, false), "");
1200 wa_8888
= LLVMBuildICmp(
1201 ctx
->builder
, LLVMIntEQ
, data_format
,
1202 LLVMConstInt(ctx
->i32
, V_008F14_IMG_DATA_FORMAT_8_8_8_8
, false),
1205 uint32_t wa_num_format
=
1206 stype
== GLSL_TYPE_UINT
?
1207 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_USCALED
) :
1208 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_SSCALED
);
1209 wa_formats
= LLVMBuildAnd(ctx
->builder
, formats
,
1210 LLVMConstInt(ctx
->i32
, C_008F14_NUM_FORMAT
, false),
1212 wa_formats
= LLVMBuildOr(ctx
->builder
, wa_formats
,
1213 LLVMConstInt(ctx
->i32
, wa_num_format
, false), "");
1215 formats
= LLVMBuildSelect(ctx
->builder
, wa_8888
, wa_formats
, formats
, "");
1216 args
->resource
= LLVMBuildInsertElement(
1217 ctx
->builder
, args
->resource
, formats
, ctx
->i32_1
, "");
1220 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
) {
1222 half_texel
[0] = half_texel
[1] = LLVMConstReal(ctx
->f32
, -0.5);
1224 struct ac_image_args resinfo
= {};
1225 LLVMBasicBlockRef bbs
[2];
1227 LLVMValueRef unnorm
= NULL
;
1228 LLVMValueRef default_offset
= ctx
->f32_0
;
1229 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
&&
1231 /* In vulkan, whether the sampler uses unnormalized
1232 * coordinates or not is a dynamic property of the
1233 * sampler. Hence, to figure out whether or not we
1234 * need to divide by the texture size, we need to test
1235 * the sampler at runtime. This tests the bit set by
1236 * radv_init_sampler().
1238 LLVMValueRef sampler0
=
1239 LLVMBuildExtractElement(ctx
->builder
, args
->sampler
, ctx
->i32_0
, "");
1240 sampler0
= LLVMBuildLShr(ctx
->builder
, sampler0
,
1241 LLVMConstInt(ctx
->i32
, 15, false), "");
1242 sampler0
= LLVMBuildAnd(ctx
->builder
, sampler0
, ctx
->i32_1
, "");
1243 unnorm
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, sampler0
, ctx
->i32_1
, "");
1244 default_offset
= LLVMConstReal(ctx
->f32
, -0.5);
1247 bbs
[0] = LLVMGetInsertBlock(ctx
->builder
);
1248 if (wa_8888
|| unnorm
) {
1249 assert(!(wa_8888
&& unnorm
));
1250 LLVMValueRef not_needed
= wa_8888
? wa_8888
: unnorm
;
1251 /* Skip the texture size query entirely if we don't need it. */
1252 ac_build_ifcc(ctx
, LLVMBuildNot(ctx
->builder
, not_needed
, ""), 2000);
1253 bbs
[1] = LLVMGetInsertBlock(ctx
->builder
);
1256 /* Query the texture size. */
1257 resinfo
.dim
= ac_get_sampler_dim(ctx
->chip_class
, instr
->sampler_dim
, instr
->is_array
);
1258 resinfo
.opcode
= ac_image_get_resinfo
;
1259 resinfo
.dmask
= 0xf;
1260 resinfo
.lod
= ctx
->i32_0
;
1261 resinfo
.resource
= args
->resource
;
1262 resinfo
.attributes
= AC_FUNC_ATTR_READNONE
;
1263 LLVMValueRef size
= ac_build_image_opcode(ctx
, &resinfo
);
1265 /* Compute -0.5 / size. */
1266 for (unsigned c
= 0; c
< 2; c
++) {
1268 LLVMBuildExtractElement(ctx
->builder
, size
,
1269 LLVMConstInt(ctx
->i32
, c
, 0), "");
1270 half_texel
[c
] = LLVMBuildUIToFP(ctx
->builder
, half_texel
[c
], ctx
->f32
, "");
1271 half_texel
[c
] = ac_build_fdiv(ctx
, ctx
->f32_1
, half_texel
[c
]);
1272 half_texel
[c
] = LLVMBuildFMul(ctx
->builder
, half_texel
[c
],
1273 LLVMConstReal(ctx
->f32
, -0.5), "");
1276 if (wa_8888
|| unnorm
) {
1277 ac_build_endif(ctx
, 2000);
1279 for (unsigned c
= 0; c
< 2; c
++) {
1280 LLVMValueRef values
[2] = { default_offset
, half_texel
[c
] };
1281 half_texel
[c
] = ac_build_phi(ctx
, ctx
->f32
, 2,
1287 for (unsigned c
= 0; c
< 2; c
++) {
1289 tmp
= LLVMBuildBitCast(ctx
->builder
, args
->coords
[c
], ctx
->f32
, "");
1290 args
->coords
[c
] = LLVMBuildFAdd(ctx
->builder
, tmp
, half_texel
[c
], "");
1293 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1294 result
= ac_build_image_opcode(ctx
, args
);
1296 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1297 LLVMValueRef tmp
, tmp2
;
1299 /* if the cube workaround is in place, f2i the result. */
1300 for (unsigned c
= 0; c
< 4; c
++) {
1301 tmp
= LLVMBuildExtractElement(ctx
->builder
, result
, LLVMConstInt(ctx
->i32
, c
, false), "");
1302 if (stype
== GLSL_TYPE_UINT
)
1303 tmp2
= LLVMBuildFPToUI(ctx
->builder
, tmp
, ctx
->i32
, "");
1305 tmp2
= LLVMBuildFPToSI(ctx
->builder
, tmp
, ctx
->i32
, "");
1306 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->i32
, "");
1307 tmp2
= LLVMBuildBitCast(ctx
->builder
, tmp2
, ctx
->i32
, "");
1308 tmp
= LLVMBuildSelect(ctx
->builder
, wa_8888
, tmp2
, tmp
, "");
1309 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f32
, "");
1310 result
= LLVMBuildInsertElement(ctx
->builder
, result
, tmp
, LLVMConstInt(ctx
->i32
, c
, false), "");
1316 static nir_deref_instr
*get_tex_texture_deref(const nir_tex_instr
*instr
)
1318 nir_deref_instr
*texture_deref_instr
= NULL
;
1320 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
1321 switch (instr
->src
[i
].src_type
) {
1322 case nir_tex_src_texture_deref
:
1323 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
1329 return texture_deref_instr
;
1332 static LLVMValueRef
build_tex_intrinsic(struct ac_nir_context
*ctx
,
1333 const nir_tex_instr
*instr
,
1334 struct ac_image_args
*args
)
1336 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
1337 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
1339 return ac_build_buffer_load_format(&ctx
->ac
,
1343 util_last_bit(mask
),
1347 args
->opcode
= ac_image_sample
;
1349 switch (instr
->op
) {
1351 case nir_texop_txf_ms
:
1352 case nir_texop_samples_identical
:
1353 args
->opcode
= args
->level_zero
||
1354 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
?
1355 ac_image_load
: ac_image_load_mip
;
1356 args
->level_zero
= false;
1359 case nir_texop_query_levels
:
1360 args
->opcode
= ac_image_get_resinfo
;
1362 args
->lod
= ctx
->ac
.i32_0
;
1363 args
->level_zero
= false;
1366 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1368 args
->level_zero
= true;
1372 args
->opcode
= ac_image_gather4
;
1373 args
->level_zero
= true;
1376 args
->opcode
= ac_image_get_lod
;
1378 case nir_texop_fragment_fetch
:
1379 case nir_texop_fragment_mask_fetch
:
1380 args
->opcode
= ac_image_load
;
1381 args
->level_zero
= false;
1387 if (instr
->op
== nir_texop_tg4
&& ctx
->ac
.chip_class
<= GFX8
) {
1388 nir_deref_instr
*texture_deref_instr
= get_tex_texture_deref(instr
);
1389 nir_variable
*var
= nir_deref_instr_get_variable(texture_deref_instr
);
1390 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1391 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1392 if (stype
== GLSL_TYPE_UINT
|| stype
== GLSL_TYPE_INT
) {
1393 return lower_gather4_integer(&ctx
->ac
, var
, args
, instr
);
1397 /* Fixup for GFX9 which allocates 1D textures as 2D. */
1398 if (instr
->op
== nir_texop_lod
&& ctx
->ac
.chip_class
== GFX9
) {
1399 if ((args
->dim
== ac_image_2darray
||
1400 args
->dim
== ac_image_2d
) && !args
->coords
[1]) {
1401 args
->coords
[1] = ctx
->ac
.i32_0
;
1405 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1406 bool cs_derivs
= ctx
->stage
== MESA_SHADER_COMPUTE
&&
1407 ctx
->info
->cs
.derivative_group
!= DERIVATIVE_GROUP_NONE
;
1408 if (ctx
->stage
== MESA_SHADER_FRAGMENT
|| cs_derivs
) {
1409 /* Prevent texture instructions with implicit derivatives from being
1410 * sinked into branches. */
1411 switch (instr
->op
) {
1415 args
->attributes
|= AC_FUNC_ATTR_CONVERGENT
;
1422 return ac_build_image_opcode(&ctx
->ac
, args
);
1425 static LLVMValueRef
visit_vulkan_resource_reindex(struct ac_nir_context
*ctx
,
1426 nir_intrinsic_instr
*instr
)
1428 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
1429 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
1431 LLVMValueRef result
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
1432 LLVMSetMetadata(result
, ctx
->ac
.uniform_md_kind
, ctx
->ac
.empty_md
);
1436 static LLVMValueRef
visit_load_push_constant(struct ac_nir_context
*ctx
,
1437 nir_intrinsic_instr
*instr
)
1439 LLVMValueRef ptr
, addr
;
1440 LLVMValueRef src0
= get_src(ctx
, instr
->src
[0]);
1441 unsigned index
= nir_intrinsic_base(instr
);
1443 addr
= LLVMConstInt(ctx
->ac
.i32
, index
, 0);
1444 addr
= LLVMBuildAdd(ctx
->ac
.builder
, addr
, src0
, "");
1446 /* Load constant values from user SGPRS when possible, otherwise
1447 * fallback to the default path that loads directly from memory.
1449 if (LLVMIsConstant(src0
) &&
1450 instr
->dest
.ssa
.bit_size
== 32) {
1451 unsigned count
= instr
->dest
.ssa
.num_components
;
1452 unsigned offset
= index
;
1454 offset
+= LLVMConstIntGetZExtValue(src0
);
1457 offset
-= ctx
->args
->base_inline_push_consts
;
1459 unsigned num_inline_push_consts
= ctx
->args
->num_inline_push_consts
;
1460 if (offset
+ count
<= num_inline_push_consts
) {
1461 LLVMValueRef push_constants
[num_inline_push_consts
];
1462 for (unsigned i
= 0; i
< num_inline_push_consts
; i
++)
1463 push_constants
[i
] = ac_get_arg(&ctx
->ac
,
1464 ctx
->args
->inline_push_consts
[i
]);
1465 return ac_build_gather_values(&ctx
->ac
,
1466 push_constants
+ offset
,
1471 ptr
= LLVMBuildGEP(ctx
->ac
.builder
,
1472 ac_get_arg(&ctx
->ac
, ctx
->args
->push_constants
), &addr
, 1, "");
1474 if (instr
->dest
.ssa
.bit_size
== 8) {
1475 unsigned load_dwords
= instr
->dest
.ssa
.num_components
> 1 ? 2 : 1;
1476 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), 4 * load_dwords
);
1477 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1478 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1480 LLVMValueRef params
[3];
1481 if (load_dwords
> 1) {
1482 LLVMValueRef res_vec
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(ctx
->ac
.i32
, 2), "");
1483 params
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
1484 params
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 0, false), "");
1486 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, ctx
->ac
.i32
, "");
1487 params
[0] = ctx
->ac
.i32_0
;
1491 res
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.alignbyte", ctx
->ac
.i32
, params
, 3, 0);
1493 res
= LLVMBuildTrunc(ctx
->ac
.builder
, res
, LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.num_components
* 8), "");
1494 if (instr
->dest
.ssa
.num_components
> 1)
1495 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), instr
->dest
.ssa
.num_components
), "");
1497 } else if (instr
->dest
.ssa
.bit_size
== 16) {
1498 unsigned load_dwords
= instr
->dest
.ssa
.num_components
/ 2 + 1;
1499 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt16TypeInContext(ctx
->ac
.context
), 2 * load_dwords
);
1500 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1501 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1502 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, vec_type
, "");
1503 LLVMValueRef cond
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, ctx
->ac
.i32_1
, "");
1504 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->ac
.i1
, "");
1505 LLVMValueRef mask
[] = { LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
1506 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
1507 LLVMConstInt(ctx
->ac
.i32
, 4, false)};
1508 LLVMValueRef swizzle_aligned
= LLVMConstVector(&mask
[0], instr
->dest
.ssa
.num_components
);
1509 LLVMValueRef swizzle_unaligned
= LLVMConstVector(&mask
[1], instr
->dest
.ssa
.num_components
);
1510 LLVMValueRef shuffle_aligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_aligned
, "");
1511 LLVMValueRef shuffle_unaligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_unaligned
, "");
1512 res
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, shuffle_unaligned
, shuffle_aligned
, "");
1513 return LLVMBuildBitCast(ctx
->ac
.builder
, res
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1516 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, get_def_type(ctx
, &instr
->dest
.ssa
));
1518 return LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1521 static LLVMValueRef
visit_get_buffer_size(struct ac_nir_context
*ctx
,
1522 const nir_intrinsic_instr
*instr
)
1524 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
1526 return get_buffer_size(ctx
, ctx
->abi
->load_ssbo(ctx
->abi
, index
, false), false);
1529 static uint32_t widen_mask(uint32_t mask
, unsigned multiplier
)
1531 uint32_t new_mask
= 0;
1532 for(unsigned i
= 0; i
< 32 && (1u << i
) <= mask
; ++i
)
1533 if (mask
& (1u << i
))
1534 new_mask
|= ((1u << multiplier
) - 1u) << (i
* multiplier
);
1538 static LLVMValueRef
extract_vector_range(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
1539 unsigned start
, unsigned count
)
1541 LLVMValueRef mask
[] = {
1542 ctx
->i32_0
, ctx
->i32_1
,
1543 LLVMConstInt(ctx
->i32
, 2, false), LLVMConstInt(ctx
->i32
, 3, false) };
1545 unsigned src_elements
= ac_get_llvm_num_components(src
);
1547 if (count
== src_elements
) {
1550 } else if (count
== 1) {
1551 assert(start
< src_elements
);
1552 return LLVMBuildExtractElement(ctx
->builder
, src
, mask
[start
], "");
1554 assert(start
+ count
<= src_elements
);
1556 LLVMValueRef swizzle
= LLVMConstVector(&mask
[start
], count
);
1557 return LLVMBuildShuffleVector(ctx
->builder
, src
, src
, swizzle
, "");
1561 static unsigned get_cache_policy(struct ac_nir_context
*ctx
,
1562 enum gl_access_qualifier access
,
1563 bool may_store_unaligned
,
1564 bool writeonly_memory
)
1566 unsigned cache_policy
= 0;
1568 /* GFX6 has a TC L1 bug causing corruption of 8bit/16bit stores. All
1569 * store opcodes not aligned to a dword are affected. The only way to
1570 * get unaligned stores is through shader images.
1572 if (((may_store_unaligned
&& ctx
->ac
.chip_class
== GFX6
) ||
1573 /* If this is write-only, don't keep data in L1 to prevent
1574 * evicting L1 cache lines that may be needed by other
1578 access
& (ACCESS_COHERENT
| ACCESS_VOLATILE
))) {
1579 cache_policy
|= ac_glc
;
1582 if (access
& ACCESS_STREAM_CACHE_POLICY
)
1583 cache_policy
|= ac_slc
;
1585 return cache_policy
;
1588 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1589 nir_intrinsic_instr
*instr
)
1591 if (ctx
->ac
.postponed_kill
) {
1592 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
1593 ctx
->ac
.postponed_kill
, "");
1594 ac_build_ifcc(&ctx
->ac
, cond
, 7000);
1597 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1598 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1599 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1600 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1601 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
1602 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, writeonly_memory
);
1604 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1605 get_src(ctx
, instr
->src
[1]), true);
1606 LLVMValueRef base_data
= src_data
;
1607 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1608 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1612 LLVMValueRef data
, offset
;
1613 LLVMTypeRef data_type
;
1615 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1617 /* Due to an LLVM limitation with LLVM < 9, split 3-element
1618 * writes into a 2-element and a 1-element write. */
1620 (elem_size_bytes
!= 4 || !ac_has_vec3_support(ctx
->ac
.chip_class
, false))) {
1621 writemask
|= 1 << (start
+ 2);
1624 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1626 /* we can only store 4 DWords at the same time.
1627 * can only happen for 64 Bit vectors. */
1628 if (num_bytes
> 16) {
1629 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1634 /* check alignment of 16 Bit stores */
1635 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1636 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1640 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1642 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1643 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1645 if (num_bytes
== 1) {
1646 ac_build_tbuffer_store_byte(&ctx
->ac
, rsrc
, data
,
1647 offset
, ctx
->ac
.i32_0
,
1649 } else if (num_bytes
== 2) {
1650 ac_build_tbuffer_store_short(&ctx
->ac
, rsrc
, data
,
1651 offset
, ctx
->ac
.i32_0
,
1654 int num_channels
= num_bytes
/ 4;
1656 switch (num_bytes
) {
1657 case 16: /* v4f32 */
1658 data_type
= ctx
->ac
.v4f32
;
1660 case 12: /* v3f32 */
1661 data_type
= ctx
->ac
.v3f32
;
1664 data_type
= ctx
->ac
.v2f32
;
1667 data_type
= ctx
->ac
.f32
;
1670 unreachable("Malformed vector store.");
1672 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1674 ac_build_buffer_store_dword(&ctx
->ac
, rsrc
, data
,
1675 num_channels
, offset
,
1681 if (ctx
->ac
.postponed_kill
)
1682 ac_build_endif(&ctx
->ac
, 7000);
1685 static LLVMValueRef
emit_ssbo_comp_swap_64(struct ac_nir_context
*ctx
,
1686 LLVMValueRef descriptor
,
1687 LLVMValueRef offset
,
1688 LLVMValueRef compare
,
1689 LLVMValueRef exchange
)
1691 LLVMBasicBlockRef start_block
= NULL
, then_block
= NULL
;
1692 if (ctx
->abi
->robust_buffer_access
) {
1693 LLVMValueRef size
= ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 2);
1695 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
, offset
, size
, "");
1696 start_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1698 ac_build_ifcc(&ctx
->ac
, cond
, -1);
1700 then_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1703 LLVMValueRef ptr_parts
[2] = {
1704 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 0),
1705 LLVMBuildAnd(ctx
->ac
.builder
,
1706 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 1),
1707 LLVMConstInt(ctx
->ac
.i32
, 65535, 0), "")
1710 ptr_parts
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i16
, "");
1711 ptr_parts
[1] = LLVMBuildSExt(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i32
, "");
1713 offset
= LLVMBuildZExt(ctx
->ac
.builder
, offset
, ctx
->ac
.i64
, "");
1715 LLVMValueRef ptr
= ac_build_gather_values(&ctx
->ac
, ptr_parts
, 2);
1716 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ctx
->ac
.i64
, "");
1717 ptr
= LLVMBuildAdd(ctx
->ac
.builder
, ptr
, offset
, "");
1718 ptr
= LLVMBuildIntToPtr(ctx
->ac
.builder
, ptr
, LLVMPointerType(ctx
->ac
.i64
, AC_ADDR_SPACE_GLOBAL
), "");
1720 LLVMValueRef result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, compare
, exchange
, "singlethread-one-as");
1721 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
1723 if (ctx
->abi
->robust_buffer_access
) {
1724 ac_build_endif(&ctx
->ac
, -1);
1726 LLVMBasicBlockRef incoming_blocks
[2] = {
1731 LLVMValueRef incoming_values
[2] = {
1732 LLVMConstInt(ctx
->ac
.i64
, 0, 0),
1735 LLVMValueRef ret
= LLVMBuildPhi(ctx
->ac
.builder
, ctx
->ac
.i64
, "");
1736 LLVMAddIncoming(ret
, incoming_values
, incoming_blocks
, 2);
1743 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1744 const nir_intrinsic_instr
*instr
)
1746 if (ctx
->ac
.postponed_kill
) {
1747 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
1748 ctx
->ac
.postponed_kill
, "");
1749 ac_build_ifcc(&ctx
->ac
, cond
, 7001);
1752 LLVMTypeRef return_type
= LLVMTypeOf(get_src(ctx
, instr
->src
[2]));
1754 char name
[64], type
[8];
1755 LLVMValueRef params
[6], descriptor
;
1756 LLVMValueRef result
;
1759 switch (instr
->intrinsic
) {
1760 case nir_intrinsic_ssbo_atomic_add
:
1763 case nir_intrinsic_ssbo_atomic_imin
:
1766 case nir_intrinsic_ssbo_atomic_umin
:
1769 case nir_intrinsic_ssbo_atomic_imax
:
1772 case nir_intrinsic_ssbo_atomic_umax
:
1775 case nir_intrinsic_ssbo_atomic_and
:
1778 case nir_intrinsic_ssbo_atomic_or
:
1781 case nir_intrinsic_ssbo_atomic_xor
:
1784 case nir_intrinsic_ssbo_atomic_exchange
:
1787 case nir_intrinsic_ssbo_atomic_comp_swap
:
1794 descriptor
= ctx
->abi
->load_ssbo(ctx
->abi
,
1795 get_src(ctx
, instr
->src
[0]),
1798 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
&&
1799 return_type
== ctx
->ac
.i64
) {
1800 result
= emit_ssbo_comp_swap_64(ctx
, descriptor
,
1801 get_src(ctx
, instr
->src
[1]),
1802 get_src(ctx
, instr
->src
[2]),
1803 get_src(ctx
, instr
->src
[3]));
1804 if (ctx
->ac
.postponed_kill
)
1805 ac_build_endif(&ctx
->ac
, 7001);
1808 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1809 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1811 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1812 params
[arg_count
++] = descriptor
;
1814 if (LLVM_VERSION_MAJOR
>= 9) {
1815 /* XXX: The new raw/struct atomic intrinsics are buggy with
1816 * LLVM 8, see r358579.
1818 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1819 params
[arg_count
++] = ctx
->ac
.i32_0
; /* soffset */
1820 params
[arg_count
++] = ctx
->ac
.i32_0
; /* slc */
1822 ac_build_type_name_for_intr(return_type
, type
, sizeof(type
));
1823 snprintf(name
, sizeof(name
),
1824 "llvm.amdgcn.raw.buffer.atomic.%s.%s", op
, type
);
1826 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1827 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1828 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1830 assert(return_type
== ctx
->ac
.i32
);
1831 snprintf(name
, sizeof(name
),
1832 "llvm.amdgcn.buffer.atomic.%s", op
);
1835 result
= ac_build_intrinsic(&ctx
->ac
, name
, return_type
, params
,
1837 if (ctx
->ac
.postponed_kill
)
1838 ac_build_endif(&ctx
->ac
, 7001);
1842 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
1843 const nir_intrinsic_instr
*instr
)
1845 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1846 int num_components
= instr
->num_components
;
1847 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1848 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, false);
1850 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1851 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
,
1852 get_src(ctx
, instr
->src
[0]), false);
1853 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
1855 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1856 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
1858 LLVMValueRef results
[4];
1859 for (int i
= 0; i
< num_components
;) {
1860 int num_elems
= num_components
- i
;
1861 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
1863 if (num_elems
* elem_size_bytes
> 16)
1864 num_elems
= 16 / elem_size_bytes
;
1865 int load_bytes
= num_elems
* elem_size_bytes
;
1867 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
1871 if (load_bytes
== 1) {
1872 ret
= ac_build_tbuffer_load_byte(&ctx
->ac
,
1878 } else if (load_bytes
== 2) {
1879 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
1886 int num_channels
= util_next_power_of_two(load_bytes
) / 4;
1887 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
1889 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_channels
,
1890 vindex
, offset
, immoffset
, 0,
1891 cache_policy
, can_speculate
, false);
1894 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
1895 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
1896 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
1898 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
1899 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
1901 for (unsigned j
= 0; j
< num_elems
; j
++) {
1902 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
1907 return ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1910 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
1911 const nir_intrinsic_instr
*instr
)
1914 LLVMValueRef rsrc
= get_src(ctx
, instr
->src
[0]);
1915 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1916 int num_components
= instr
->num_components
;
1918 if (ctx
->abi
->load_ubo
)
1919 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
1921 if (instr
->dest
.ssa
.bit_size
== 64)
1922 num_components
*= 2;
1924 if (instr
->dest
.ssa
.bit_size
== 16 || instr
->dest
.ssa
.bit_size
== 8) {
1925 unsigned load_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1926 LLVMValueRef results
[num_components
];
1927 for (unsigned i
= 0; i
< num_components
; ++i
) {
1928 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
,
1931 if (load_bytes
== 1) {
1932 results
[i
] = ac_build_tbuffer_load_byte(&ctx
->ac
,
1939 assert(load_bytes
== 2);
1940 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
1948 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
1950 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
1951 NULL
, 0, 0, true, true);
1953 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
1956 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
1957 get_def_type(ctx
, &instr
->dest
.ssa
), "");
1961 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
1962 bool vs_in
, unsigned *vertex_index_out
,
1963 LLVMValueRef
*vertex_index_ref
,
1964 unsigned *const_out
, LLVMValueRef
*indir_out
)
1966 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
1967 nir_deref_path path
;
1968 unsigned idx_lvl
= 1;
1970 nir_deref_path_init(&path
, instr
, NULL
);
1972 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
1973 if (vertex_index_ref
) {
1974 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
1975 if (vertex_index_out
)
1976 *vertex_index_out
= 0;
1978 *vertex_index_out
= nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
1983 uint32_t const_offset
= 0;
1984 LLVMValueRef offset
= NULL
;
1986 if (var
->data
.compact
) {
1987 assert(instr
->deref_type
== nir_deref_type_array
);
1988 const_offset
= nir_src_as_uint(instr
->arr
.index
);
1992 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
1993 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
1994 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
1995 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
1997 for (unsigned i
= 0; i
< index
; i
++) {
1998 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
1999 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
2001 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
2002 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
2003 if (nir_src_is_const(path
.path
[idx_lvl
]->arr
.index
)) {
2004 const_offset
+= size
*
2005 nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
2007 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
2008 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
2010 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
2015 unreachable("Uhandled deref type in get_deref_instr_offset");
2019 nir_deref_path_finish(&path
);
2021 if (const_offset
&& offset
)
2022 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
2023 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
2026 *const_out
= const_offset
;
2027 *indir_out
= offset
;
2030 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
2031 nir_intrinsic_instr
*instr
,
2034 LLVMValueRef result
;
2035 LLVMValueRef vertex_index
= NULL
;
2036 LLVMValueRef indir_index
= NULL
;
2037 unsigned const_index
= 0;
2039 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
2041 unsigned location
= var
->data
.location
;
2042 unsigned driver_location
= var
->data
.driver_location
;
2043 const bool is_patch
= var
->data
.patch
||
2044 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
2045 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
;
2046 const bool is_compact
= var
->data
.compact
;
2048 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2049 false, NULL
, is_patch
? NULL
: &vertex_index
,
2050 &const_index
, &indir_index
);
2052 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2054 LLVMTypeRef src_component_type
;
2055 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
2056 src_component_type
= LLVMGetElementType(dest_type
);
2058 src_component_type
= dest_type
;
2060 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
2061 vertex_index
, indir_index
,
2062 const_index
, location
, driver_location
,
2063 var
->data
.location_frac
,
2064 instr
->num_components
,
2065 is_patch
, is_compact
, load_inputs
);
2066 if (instr
->dest
.ssa
.bit_size
== 16) {
2067 result
= ac_to_integer(&ctx
->ac
, result
);
2068 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
2070 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
2074 type_scalar_size_bytes(const struct glsl_type
*type
)
2076 assert(glsl_type_is_vector_or_scalar(type
) ||
2077 glsl_type_is_matrix(type
));
2078 return glsl_type_is_boolean(type
) ? 4 : glsl_get_bit_size(type
) / 8;
2081 static LLVMValueRef
visit_load_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 values
[8];
2089 int ve
= instr
->dest
.ssa
.num_components
;
2091 LLVMValueRef indir_index
;
2093 unsigned const_index
;
2094 unsigned stride
= 4;
2095 int mode
= deref
->mode
;
2098 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
2099 var
->data
.mode
== nir_var_shader_in
;
2100 idx
= var
->data
.driver_location
;
2101 comp
= var
->data
.location_frac
;
2102 mode
= var
->data
.mode
;
2104 get_deref_offset(ctx
, deref
, vs_in
, NULL
, NULL
,
2105 &const_index
, &indir_index
);
2107 if (var
->data
.compact
) {
2109 const_index
+= comp
;
2114 if (instr
->dest
.ssa
.bit_size
== 64 &&
2115 (deref
->mode
== nir_var_shader_in
||
2116 deref
->mode
== nir_var_shader_out
||
2117 deref
->mode
== nir_var_function_temp
))
2121 case nir_var_shader_in
:
2122 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
2123 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
2124 return load_tess_varyings(ctx
, instr
, true);
2127 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
2128 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
2129 LLVMValueRef indir_index
;
2130 unsigned const_index
, vertex_index
;
2131 get_deref_offset(ctx
, deref
, false, &vertex_index
, NULL
,
2132 &const_index
, &indir_index
);
2133 assert(indir_index
== NULL
);
2135 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
2136 var
->data
.driver_location
,
2137 var
->data
.location_frac
,
2138 instr
->num_components
, vertex_index
, const_index
, type
);
2141 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2143 unsigned count
= glsl_count_attribute_slots(
2145 ctx
->stage
== MESA_SHADER_VERTEX
);
2147 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2148 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
2149 stride
, false, true);
2151 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2155 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
2158 case nir_var_function_temp
:
2159 for (unsigned chan
= 0; chan
< ve
; chan
++) {
2161 unsigned count
= glsl_count_attribute_slots(
2164 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2165 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2166 stride
, true, true);
2168 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2172 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
2176 case nir_var_shader_out
:
2177 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2178 return load_tess_varyings(ctx
, instr
, false);
2181 if (ctx
->stage
== MESA_SHADER_FRAGMENT
&&
2182 var
->data
.fb_fetch_output
&&
2183 ctx
->abi
->emit_fbfetch
)
2184 return ctx
->abi
->emit_fbfetch(ctx
->abi
);
2186 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2188 unsigned count
= glsl_count_attribute_slots(
2191 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2192 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2193 stride
, true, true);
2195 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2199 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
2200 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
2205 case nir_var_mem_global
: {
2206 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2207 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2208 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2209 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2211 LLVMTypeRef result_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2212 if (stride
!= natural_stride
) {
2213 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(result_type
),
2214 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2215 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2217 for (unsigned i
= 0; i
< instr
->dest
.ssa
.num_components
; ++i
) {
2218 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, i
* stride
/ natural_stride
, 0);
2219 values
[i
] = LLVMBuildLoad(ctx
->ac
.builder
,
2220 ac_build_gep_ptr(&ctx
->ac
, address
, offset
), "");
2222 return ac_build_gather_values(&ctx
->ac
, values
, instr
->dest
.ssa
.num_components
);
2224 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2225 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2226 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2227 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2232 unreachable("unhandle variable mode");
2234 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
2235 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2239 visit_store_var(struct ac_nir_context
*ctx
,
2240 nir_intrinsic_instr
*instr
)
2242 if (ctx
->ac
.postponed_kill
) {
2243 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2244 ctx
->ac
.postponed_kill
, "");
2245 ac_build_ifcc(&ctx
->ac
, cond
, 7002);
2248 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2249 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2251 LLVMValueRef temp_ptr
, value
;
2254 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
2255 int writemask
= instr
->const_index
[0];
2256 LLVMValueRef indir_index
;
2257 unsigned const_index
;
2260 get_deref_offset(ctx
, deref
, false,
2261 NULL
, NULL
, &const_index
, &indir_index
);
2262 idx
= var
->data
.driver_location
;
2263 comp
= var
->data
.location_frac
;
2265 if (var
->data
.compact
) {
2266 const_index
+= comp
;
2271 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64 &&
2272 (deref
->mode
== nir_var_shader_out
||
2273 deref
->mode
== nir_var_function_temp
)) {
2275 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2276 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2279 writemask
= widen_mask(writemask
, 2);
2282 writemask
= writemask
<< comp
;
2284 switch (deref
->mode
) {
2285 case nir_var_shader_out
:
2287 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2288 LLVMValueRef vertex_index
= NULL
;
2289 LLVMValueRef indir_index
= NULL
;
2290 unsigned const_index
= 0;
2291 const bool is_patch
= var
->data
.patch
||
2292 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
2293 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
;
2295 get_deref_offset(ctx
, deref
, false, NULL
,
2296 is_patch
? NULL
: &vertex_index
,
2297 &const_index
, &indir_index
);
2299 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2300 vertex_index
, indir_index
,
2301 const_index
, src
, writemask
);
2305 for (unsigned chan
= 0; chan
< 8; chan
++) {
2307 if (!(writemask
& (1 << chan
)))
2310 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2312 if (var
->data
.compact
)
2315 unsigned count
= glsl_count_attribute_slots(
2318 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2319 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2320 stride
, true, true);
2322 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2323 value
, indir_index
, "");
2324 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2325 count
, stride
, tmp_vec
);
2328 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2330 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2334 case nir_var_function_temp
:
2335 for (unsigned chan
= 0; chan
< 8; chan
++) {
2336 if (!(writemask
& (1 << chan
)))
2339 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2341 unsigned count
= glsl_count_attribute_slots(
2344 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2345 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2348 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2349 value
, indir_index
, "");
2350 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2353 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2355 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2360 case nir_var_mem_global
: {
2361 int writemask
= instr
->const_index
[0];
2362 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2363 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2365 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2366 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2367 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2369 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2370 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2371 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2373 if (writemask
== (1u << ac_get_llvm_num_components(val
)) - 1 &&
2374 stride
== natural_stride
) {
2375 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2376 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2377 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2379 val
= LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2380 LLVMGetElementType(LLVMTypeOf(address
)), "");
2381 LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2383 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(LLVMTypeOf(val
)),
2384 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2385 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2386 for (unsigned chan
= 0; chan
< 4; chan
++) {
2387 if (!(writemask
& (1 << chan
)))
2390 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, chan
* stride
/ natural_stride
, 0);
2392 LLVMValueRef ptr
= ac_build_gep_ptr(&ctx
->ac
, address
, offset
);
2393 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2395 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2396 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2397 LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2407 if (ctx
->ac
.postponed_kill
)
2408 ac_build_endif(&ctx
->ac
, 7002);
2411 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2414 case GLSL_SAMPLER_DIM_BUF
:
2416 case GLSL_SAMPLER_DIM_1D
:
2417 return array
? 2 : 1;
2418 case GLSL_SAMPLER_DIM_2D
:
2419 return array
? 3 : 2;
2420 case GLSL_SAMPLER_DIM_MS
:
2421 return array
? 4 : 3;
2422 case GLSL_SAMPLER_DIM_3D
:
2423 case GLSL_SAMPLER_DIM_CUBE
:
2425 case GLSL_SAMPLER_DIM_RECT
:
2426 case GLSL_SAMPLER_DIM_SUBPASS
:
2428 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2436 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2437 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2438 LLVMValueRef coord_z
,
2439 LLVMValueRef sample_index
,
2440 LLVMValueRef fmask_desc_ptr
)
2442 unsigned sample_chan
= coord_z
? 3 : 2;
2443 LLVMValueRef addr
[4] = {coord_x
, coord_y
, coord_z
};
2444 addr
[sample_chan
] = sample_index
;
2446 ac_apply_fmask_to_sample(ctx
, fmask_desc_ptr
, addr
, coord_z
!= NULL
);
2447 return addr
[sample_chan
];
2450 static nir_deref_instr
*get_image_deref(const nir_intrinsic_instr
*instr
)
2452 assert(instr
->src
[0].is_ssa
);
2453 return nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2456 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2457 const nir_intrinsic_instr
*instr
,
2458 enum ac_descriptor_type desc_type
,
2461 nir_deref_instr
*deref_instr
=
2462 instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
?
2463 nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
) : NULL
;
2465 return get_sampler_desc(ctx
, deref_instr
, desc_type
, &instr
->instr
, true, write
);
2468 static void get_image_coords(struct ac_nir_context
*ctx
,
2469 const nir_intrinsic_instr
*instr
,
2470 struct ac_image_args
*args
,
2471 enum glsl_sampler_dim dim
,
2474 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2475 LLVMValueRef masks
[] = {
2476 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2477 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2479 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2482 ASSERTED
bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2483 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2484 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2485 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2486 bool gfx9_1d
= ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2487 assert(!add_frag_pos
&& "Input attachments should be lowered by this point.");
2488 count
= image_type_to_components_count(dim
, is_array
);
2490 if (is_ms
&& (instr
->intrinsic
== nir_intrinsic_image_deref_load
||
2491 instr
->intrinsic
== nir_intrinsic_bindless_image_load
)) {
2492 LLVMValueRef fmask_load_address
[3];
2494 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2495 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2497 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2499 fmask_load_address
[2] = NULL
;
2501 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2502 fmask_load_address
[0],
2503 fmask_load_address
[1],
2504 fmask_load_address
[2],
2506 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2507 AC_DESC_FMASK
, &instr
->instr
, true, false));
2509 if (count
== 1 && !gfx9_1d
) {
2510 if (instr
->src
[1].ssa
->num_components
)
2511 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2513 args
->coords
[0] = src0
;
2518 for (chan
= 0; chan
< count
; ++chan
) {
2519 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2524 args
->coords
[2] = args
->coords
[1];
2525 args
->coords
[1] = ctx
->ac
.i32_0
;
2527 args
->coords
[1] = ctx
->ac
.i32_0
;
2530 if (ctx
->ac
.chip_class
== GFX9
&&
2531 dim
== GLSL_SAMPLER_DIM_2D
&&
2533 /* The hw can't bind a slice of a 3D image as a 2D
2534 * image, because it ignores BASE_ARRAY if the target
2535 * is 3D. The workaround is to read BASE_ARRAY and set
2536 * it as the 3rd address operand for all 2D images.
2538 LLVMValueRef first_layer
, const5
, mask
;
2540 const5
= LLVMConstInt(ctx
->ac
.i32
, 5, 0);
2541 mask
= LLVMConstInt(ctx
->ac
.i32
, S_008F24_BASE_ARRAY(~0), 0);
2542 first_layer
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
->resource
, const5
, "");
2543 first_layer
= LLVMBuildAnd(ctx
->ac
.builder
, first_layer
, mask
, "");
2545 args
->coords
[count
] = first_layer
;
2551 args
->coords
[count
] = sample_index
;
2557 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2558 const nir_intrinsic_instr
*instr
,
2559 bool write
, bool atomic
)
2561 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, write
);
2562 if (ctx
->ac
.chip_class
== GFX9
&& LLVM_VERSION_MAJOR
< 9 && atomic
) {
2563 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2564 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2565 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2567 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2568 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2569 elem_count
, stride
, "");
2571 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2572 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2577 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2578 const nir_intrinsic_instr
*instr
,
2583 enum glsl_sampler_dim dim
;
2584 enum gl_access_qualifier access
;
2587 dim
= nir_intrinsic_image_dim(instr
);
2588 access
= nir_intrinsic_access(instr
);
2589 is_array
= nir_intrinsic_image_array(instr
);
2591 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2592 const struct glsl_type
*type
= image_deref
->type
;
2593 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2594 dim
= glsl_get_sampler_dim(type
);
2595 access
= var
->data
.access
;
2596 is_array
= glsl_sampler_type_is_array(type
);
2599 struct ac_image_args args
= {};
2601 args
.cache_policy
= get_cache_policy(ctx
, access
, false, false);
2603 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2604 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2605 unsigned num_channels
= util_last_bit(mask
);
2606 LLVMValueRef rsrc
, vindex
;
2608 rsrc
= get_image_buffer_descriptor(ctx
, instr
, false, false);
2609 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2612 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2613 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2614 ctx
->ac
.i32_0
, num_channels
,
2617 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2619 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2620 res
= ac_to_integer(&ctx
->ac
, res
);
2622 bool level_zero
= nir_src_is_const(instr
->src
[3]) && nir_src_as_uint(instr
->src
[3]) == 0;
2624 args
.opcode
= level_zero
? ac_image_load
: ac_image_load_mip
;
2625 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2626 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2627 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2629 args
.lod
= get_src(ctx
, instr
->src
[3]);
2631 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2633 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2638 static void visit_image_store(struct ac_nir_context
*ctx
,
2639 nir_intrinsic_instr
*instr
,
2642 if (ctx
->ac
.postponed_kill
) {
2643 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2644 ctx
->ac
.postponed_kill
, "");
2645 ac_build_ifcc(&ctx
->ac
, cond
, 7003);
2648 enum glsl_sampler_dim dim
;
2649 enum gl_access_qualifier access
;
2652 dim
= nir_intrinsic_image_dim(instr
);
2653 access
= nir_intrinsic_access(instr
);
2654 is_array
= nir_intrinsic_image_array(instr
);
2656 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2657 const struct glsl_type
*type
= image_deref
->type
;
2658 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2659 dim
= glsl_get_sampler_dim(type
);
2660 access
= var
->data
.access
;
2661 is_array
= glsl_sampler_type_is_array(type
);
2664 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
2665 struct ac_image_args args
= {};
2667 args
.cache_policy
= get_cache_policy(ctx
, access
, true, writeonly_memory
);
2669 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2670 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, true, false);
2671 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2672 unsigned src_channels
= ac_get_llvm_num_components(src
);
2673 LLVMValueRef vindex
;
2675 if (src_channels
== 3)
2676 src
= ac_build_expand_to_vec4(&ctx
->ac
, src
, 3);
2678 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2679 get_src(ctx
, instr
->src
[1]),
2682 ac_build_buffer_store_format(&ctx
->ac
, rsrc
, src
, vindex
,
2683 ctx
->ac
.i32_0
, src_channels
,
2686 bool level_zero
= nir_src_is_const(instr
->src
[4]) && nir_src_as_uint(instr
->src
[4]) == 0;
2688 args
.opcode
= level_zero
? ac_image_store
: ac_image_store_mip
;
2689 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2690 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2691 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2692 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2694 args
.lod
= get_src(ctx
, instr
->src
[4]);
2697 ac_build_image_opcode(&ctx
->ac
, &args
);
2700 if (ctx
->ac
.postponed_kill
)
2701 ac_build_endif(&ctx
->ac
, 7003);
2704 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2705 const nir_intrinsic_instr
*instr
,
2708 if (ctx
->ac
.postponed_kill
) {
2709 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2710 ctx
->ac
.postponed_kill
, "");
2711 ac_build_ifcc(&ctx
->ac
, cond
, 7004);
2714 LLVMValueRef params
[7];
2715 int param_count
= 0;
2717 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
||
2718 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_comp_swap
;
2719 const char *atomic_name
;
2720 char intrinsic_name
[64];
2721 enum ac_atomic_op atomic_subop
;
2722 ASSERTED
int length
;
2724 enum glsl_sampler_dim dim
;
2727 if (instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imin
||
2728 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umin
||
2729 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imax
||
2730 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umax
) {
2731 ASSERTED
const GLenum format
= nir_intrinsic_format(instr
);
2732 assert(format
== GL_R32UI
|| format
== GL_R32I
);
2734 dim
= nir_intrinsic_image_dim(instr
);
2735 is_array
= nir_intrinsic_image_array(instr
);
2737 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2738 dim
= glsl_get_sampler_dim(type
);
2739 is_array
= glsl_sampler_type_is_array(type
);
2742 switch (instr
->intrinsic
) {
2743 case nir_intrinsic_bindless_image_atomic_add
:
2744 case nir_intrinsic_image_deref_atomic_add
:
2745 atomic_name
= "add";
2746 atomic_subop
= ac_atomic_add
;
2748 case nir_intrinsic_bindless_image_atomic_imin
:
2749 case nir_intrinsic_image_deref_atomic_imin
:
2750 atomic_name
= "smin";
2751 atomic_subop
= ac_atomic_smin
;
2753 case nir_intrinsic_bindless_image_atomic_umin
:
2754 case nir_intrinsic_image_deref_atomic_umin
:
2755 atomic_name
= "umin";
2756 atomic_subop
= ac_atomic_umin
;
2758 case nir_intrinsic_bindless_image_atomic_imax
:
2759 case nir_intrinsic_image_deref_atomic_imax
:
2760 atomic_name
= "smax";
2761 atomic_subop
= ac_atomic_smax
;
2763 case nir_intrinsic_bindless_image_atomic_umax
:
2764 case nir_intrinsic_image_deref_atomic_umax
:
2765 atomic_name
= "umax";
2766 atomic_subop
= ac_atomic_umax
;
2768 case nir_intrinsic_bindless_image_atomic_and
:
2769 case nir_intrinsic_image_deref_atomic_and
:
2770 atomic_name
= "and";
2771 atomic_subop
= ac_atomic_and
;
2773 case nir_intrinsic_bindless_image_atomic_or
:
2774 case nir_intrinsic_image_deref_atomic_or
:
2776 atomic_subop
= ac_atomic_or
;
2778 case nir_intrinsic_bindless_image_atomic_xor
:
2779 case nir_intrinsic_image_deref_atomic_xor
:
2780 atomic_name
= "xor";
2781 atomic_subop
= ac_atomic_xor
;
2783 case nir_intrinsic_bindless_image_atomic_exchange
:
2784 case nir_intrinsic_image_deref_atomic_exchange
:
2785 atomic_name
= "swap";
2786 atomic_subop
= ac_atomic_swap
;
2788 case nir_intrinsic_bindless_image_atomic_comp_swap
:
2789 case nir_intrinsic_image_deref_atomic_comp_swap
:
2790 atomic_name
= "cmpswap";
2791 atomic_subop
= 0; /* not used */
2793 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
2794 case nir_intrinsic_image_deref_atomic_inc_wrap
: {
2795 atomic_name
= "inc";
2796 atomic_subop
= ac_atomic_inc_wrap
;
2797 /* ATOMIC_INC instruction does:
2798 * value = (value + 1) % (data + 1)
2800 * value = (value + 1) % data
2801 * So replace 'data' by 'data - 1'.
2803 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
] =
2804 LLVMBuildSub(ctx
->ac
.builder
,
2805 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
],
2809 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
2810 case nir_intrinsic_image_deref_atomic_dec_wrap
:
2811 atomic_name
= "dec";
2812 atomic_subop
= ac_atomic_dec_wrap
;
2819 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
2820 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
2822 LLVMValueRef result
;
2823 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2824 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, true, true);
2825 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2826 ctx
->ac
.i32_0
, ""); /* vindex */
2827 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
2828 if (LLVM_VERSION_MAJOR
>= 9) {
2829 /* XXX: The new raw/struct atomic intrinsics are buggy
2830 * with LLVM 8, see r358579.
2832 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
2833 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
2835 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2836 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
2838 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
2840 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2841 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
2844 assert(length
< sizeof(intrinsic_name
));
2845 result
= ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
2846 params
, param_count
, 0);
2848 struct ac_image_args args
= {};
2849 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
2850 args
.atomic
= atomic_subop
;
2851 args
.data
[0] = params
[0];
2853 args
.data
[1] = params
[1];
2854 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, true);
2855 get_image_coords(ctx
, instr
, &args
, dim
, is_array
);
2856 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2858 result
= ac_build_image_opcode(&ctx
->ac
, &args
);
2861 if (ctx
->ac
.postponed_kill
)
2862 ac_build_endif(&ctx
->ac
, 7004);
2866 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
2867 const nir_intrinsic_instr
*instr
)
2869 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2871 return ac_build_image_get_sample_count(&ctx
->ac
, rsrc
);
2874 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
2875 const nir_intrinsic_instr
*instr
,
2880 enum glsl_sampler_dim dim
;
2883 dim
= nir_intrinsic_image_dim(instr
);
2884 is_array
= nir_intrinsic_image_array(instr
);
2886 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2887 dim
= glsl_get_sampler_dim(type
);
2888 is_array
= glsl_sampler_type_is_array(type
);
2891 if (dim
== GLSL_SAMPLER_DIM_BUF
)
2892 return get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, AC_DESC_BUFFER
, false), true);
2894 struct ac_image_args args
= { 0 };
2896 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2898 args
.resource
= get_image_descriptor(ctx
, instr
, AC_DESC_IMAGE
, false);
2899 args
.opcode
= ac_image_get_resinfo
;
2900 args
.lod
= ctx
->ac
.i32_0
;
2901 args
.attributes
= AC_FUNC_ATTR_READNONE
;
2903 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2905 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
2907 if (dim
== GLSL_SAMPLER_DIM_CUBE
&& is_array
) {
2908 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
2909 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2910 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
2911 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
2913 if (ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
&& is_array
) {
2914 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
2915 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
2922 static void emit_membar(struct ac_llvm_context
*ac
,
2923 const nir_intrinsic_instr
*instr
)
2925 unsigned wait_flags
= 0;
2927 switch (instr
->intrinsic
) {
2928 case nir_intrinsic_memory_barrier
:
2929 case nir_intrinsic_group_memory_barrier
:
2930 wait_flags
= AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
2932 case nir_intrinsic_memory_barrier_buffer
:
2933 case nir_intrinsic_memory_barrier_image
:
2934 wait_flags
= AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
2936 case nir_intrinsic_memory_barrier_shared
:
2937 wait_flags
= AC_WAIT_LGKM
;
2943 ac_build_waitcnt(ac
, wait_flags
);
2946 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
2948 /* GFX6 only (thanks to a hw bug workaround):
2949 * The real barrier instruction isn’t needed, because an entire patch
2950 * always fits into a single wave.
2952 if (ac
->chip_class
== GFX6
&& stage
== MESA_SHADER_TESS_CTRL
) {
2953 ac_build_waitcnt(ac
, AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
);
2956 ac_build_s_barrier(ac
);
2959 static void emit_discard(struct ac_nir_context
*ctx
,
2960 const nir_intrinsic_instr
*instr
)
2964 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
2965 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2966 get_src(ctx
, instr
->src
[0]),
2969 assert(instr
->intrinsic
== nir_intrinsic_discard
);
2970 cond
= ctx
->ac
.i1false
;
2973 ac_build_kill_if_false(&ctx
->ac
, cond
);
2976 static void emit_demote(struct ac_nir_context
*ctx
,
2977 const nir_intrinsic_instr
*instr
)
2981 if (instr
->intrinsic
== nir_intrinsic_demote_if
) {
2982 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2983 get_src(ctx
, instr
->src
[0]),
2986 assert(instr
->intrinsic
== nir_intrinsic_demote
);
2987 cond
= ctx
->ac
.i1false
;
2990 /* Kill immediately while maintaining WQM. */
2991 ac_build_kill_if_false(&ctx
->ac
, ac_build_wqm_vote(&ctx
->ac
, cond
));
2993 LLVMValueRef mask
= LLVMBuildLoad(ctx
->ac
.builder
, ctx
->ac
.postponed_kill
, "");
2994 mask
= LLVMBuildAnd(ctx
->ac
.builder
, mask
, cond
, "");
2995 LLVMBuildStore(ctx
->ac
.builder
, mask
, ctx
->ac
.postponed_kill
);
3000 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
3002 LLVMValueRef result
;
3003 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
3004 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3005 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3006 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
3008 if (ctx
->ac
.wave_size
== 32)
3009 result
= LLVMBuildLShr(ctx
->ac
.builder
, result
,
3010 LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
3012 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
3016 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
3018 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
3019 LLVMValueRef result
;
3020 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3021 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3022 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
3023 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
3025 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
3030 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
3032 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
3033 return LLVMBuildAnd(ctx
->ac
.builder
,
3034 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3035 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
3037 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
3042 visit_first_invocation(struct ac_nir_context
*ctx
)
3044 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
3045 const char *intr
= ctx
->ac
.wave_size
== 32 ? "llvm.cttz.i32" : "llvm.cttz.i64";
3047 /* The second argument is whether cttz(0) should be defined, but we do not care. */
3048 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
3049 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
, intr
,
3050 ctx
->ac
.iN_wavemask
, args
, 2,
3051 AC_FUNC_ATTR_NOUNWIND
|
3052 AC_FUNC_ATTR_READNONE
);
3054 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
3058 visit_load_shared(struct ac_nir_context
*ctx
,
3059 const nir_intrinsic_instr
*instr
)
3061 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
3063 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0],
3064 instr
->dest
.ssa
.bit_size
);
3066 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
3067 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
3068 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
3069 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
3072 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
3073 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
3077 visit_store_shared(struct ac_nir_context
*ctx
,
3078 const nir_intrinsic_instr
*instr
)
3080 LLVMValueRef derived_ptr
, data
,index
;
3081 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3083 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1],
3084 instr
->src
[0].ssa
->bit_size
);
3085 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
3087 int writemask
= nir_intrinsic_write_mask(instr
);
3088 for (int chan
= 0; chan
< 4; chan
++) {
3089 if (!(writemask
& (1 << chan
))) {
3092 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
3093 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
3094 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
3095 LLVMBuildStore(builder
, data
, derived_ptr
);
3099 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
3100 const nir_intrinsic_instr
*instr
,
3101 LLVMValueRef ptr
, int src_idx
)
3103 if (ctx
->ac
.postponed_kill
) {
3104 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
3105 ctx
->ac
.postponed_kill
, "");
3106 ac_build_ifcc(&ctx
->ac
, cond
, 7005);
3109 LLVMValueRef result
;
3110 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
3112 const char *sync_scope
= LLVM_VERSION_MAJOR
>= 9 ? "workgroup-one-as" : "workgroup";
3114 if (instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
) {
3115 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
3116 if (deref
->mode
== nir_var_mem_global
) {
3117 /* use "singlethread" sync scope to implement relaxed ordering */
3118 sync_scope
= LLVM_VERSION_MAJOR
>= 9 ? "singlethread-one-as" : "singlethread";
3120 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(src
), LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
)));
3121 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ptr_type
, "");
3125 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
3126 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
3127 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
3128 result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, src
, src1
, sync_scope
);
3129 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
3131 LLVMAtomicRMWBinOp op
;
3132 switch (instr
->intrinsic
) {
3133 case nir_intrinsic_shared_atomic_add
:
3134 case nir_intrinsic_deref_atomic_add
:
3135 op
= LLVMAtomicRMWBinOpAdd
;
3137 case nir_intrinsic_shared_atomic_umin
:
3138 case nir_intrinsic_deref_atomic_umin
:
3139 op
= LLVMAtomicRMWBinOpUMin
;
3141 case nir_intrinsic_shared_atomic_umax
:
3142 case nir_intrinsic_deref_atomic_umax
:
3143 op
= LLVMAtomicRMWBinOpUMax
;
3145 case nir_intrinsic_shared_atomic_imin
:
3146 case nir_intrinsic_deref_atomic_imin
:
3147 op
= LLVMAtomicRMWBinOpMin
;
3149 case nir_intrinsic_shared_atomic_imax
:
3150 case nir_intrinsic_deref_atomic_imax
:
3151 op
= LLVMAtomicRMWBinOpMax
;
3153 case nir_intrinsic_shared_atomic_and
:
3154 case nir_intrinsic_deref_atomic_and
:
3155 op
= LLVMAtomicRMWBinOpAnd
;
3157 case nir_intrinsic_shared_atomic_or
:
3158 case nir_intrinsic_deref_atomic_or
:
3159 op
= LLVMAtomicRMWBinOpOr
;
3161 case nir_intrinsic_shared_atomic_xor
:
3162 case nir_intrinsic_deref_atomic_xor
:
3163 op
= LLVMAtomicRMWBinOpXor
;
3165 case nir_intrinsic_shared_atomic_exchange
:
3166 case nir_intrinsic_deref_atomic_exchange
:
3167 op
= LLVMAtomicRMWBinOpXchg
;
3173 result
= ac_build_atomic_rmw(&ctx
->ac
, op
, ptr
, ac_to_integer(&ctx
->ac
, src
), sync_scope
);
3176 if (ctx
->ac
.postponed_kill
)
3177 ac_build_endif(&ctx
->ac
, 7005);
3181 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
3183 LLVMValueRef values
[2];
3184 LLVMValueRef pos
[2];
3186 pos
[0] = ac_to_float(&ctx
->ac
,
3187 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[0]));
3188 pos
[1] = ac_to_float(&ctx
->ac
,
3189 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[1]));
3191 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
3192 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
3193 return ac_build_gather_values(&ctx
->ac
, values
, 2);
3196 static LLVMValueRef
lookup_interp_param(struct ac_nir_context
*ctx
,
3197 enum glsl_interp_mode interp
, unsigned location
)
3200 case INTERP_MODE_FLAT
:
3203 case INTERP_MODE_SMOOTH
:
3204 case INTERP_MODE_NONE
:
3205 if (location
== INTERP_CENTER
)
3206 return ac_get_arg(&ctx
->ac
, ctx
->args
->persp_center
);
3207 else if (location
== INTERP_CENTROID
)
3208 return ctx
->abi
->persp_centroid
;
3209 else if (location
== INTERP_SAMPLE
)
3210 return ac_get_arg(&ctx
->ac
, ctx
->args
->persp_sample
);
3212 case INTERP_MODE_NOPERSPECTIVE
:
3213 if (location
== INTERP_CENTER
)
3214 return ac_get_arg(&ctx
->ac
, ctx
->args
->linear_center
);
3215 else if (location
== INTERP_CENTROID
)
3216 return ctx
->abi
->linear_centroid
;
3217 else if (location
== INTERP_SAMPLE
)
3218 return ac_get_arg(&ctx
->ac
, ctx
->args
->linear_sample
);
3224 static LLVMValueRef
barycentric_center(struct ac_nir_context
*ctx
,
3227 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3228 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3231 static LLVMValueRef
barycentric_offset(struct ac_nir_context
*ctx
,
3233 LLVMValueRef offset
)
3235 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3236 LLVMValueRef src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_0
, ""));
3237 LLVMValueRef src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_1
, ""));
3239 LLVMValueRef ij_out
[2];
3240 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
3243 * take the I then J parameters, and the DDX/Y for it, and
3244 * calculate the IJ inputs for the interpolator.
3245 * temp1 = ddx * offset/sample.x + I;
3246 * interp_param.I = ddy * offset/sample.y + temp1;
3247 * temp1 = ddx * offset/sample.x + J;
3248 * interp_param.J = ddy * offset/sample.y + temp1;
3250 for (unsigned i
= 0; i
< 2; i
++) {
3251 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
3252 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
3253 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3254 ddxy_out
, ix_ll
, "");
3255 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3256 ddxy_out
, iy_ll
, "");
3257 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3258 interp_param
, ix_ll
, "");
3259 LLVMValueRef temp1
, temp2
;
3261 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
3264 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
3265 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
3267 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
3268 temp2
, ctx
->ac
.i32
, "");
3270 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
3271 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3274 static LLVMValueRef
barycentric_centroid(struct ac_nir_context
*ctx
,
3277 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTROID
);
3278 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3281 static LLVMValueRef
barycentric_at_sample(struct ac_nir_context
*ctx
,
3283 LLVMValueRef sample_id
)
3285 if (ctx
->abi
->interp_at_sample_force_center
)
3286 return barycentric_center(ctx
, mode
);
3288 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
3290 /* fetch sample ID */
3291 LLVMValueRef sample_pos
= ctx
->abi
->load_sample_position(ctx
->abi
, sample_id
);
3293 LLVMValueRef src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_0
, "");
3294 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
3295 LLVMValueRef src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_1
, "");
3296 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
3297 LLVMValueRef coords
[] = { src_c0
, src_c1
};
3298 LLVMValueRef offset
= ac_build_gather_values(&ctx
->ac
, coords
, 2);
3300 return barycentric_offset(ctx
, mode
, offset
);
3304 static LLVMValueRef
barycentric_sample(struct ac_nir_context
*ctx
,
3307 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_SAMPLE
);
3308 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3311 static LLVMValueRef
barycentric_model(struct ac_nir_context
*ctx
)
3313 return LLVMBuildBitCast(ctx
->ac
.builder
,
3314 ac_get_arg(&ctx
->ac
, ctx
->args
->pull_model
),
3318 static LLVMValueRef
load_interpolated_input(struct ac_nir_context
*ctx
,
3319 LLVMValueRef interp_param
,
3320 unsigned index
, unsigned comp_start
,
3321 unsigned num_components
,
3324 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3326 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
,
3327 interp_param
, ctx
->ac
.v2f32
, "");
3328 LLVMValueRef i
= LLVMBuildExtractElement(
3329 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_0
, "");
3330 LLVMValueRef j
= LLVMBuildExtractElement(
3331 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_1
, "");
3333 LLVMValueRef values
[4];
3334 assert(bitsize
== 16 || bitsize
== 32);
3335 for (unsigned comp
= 0; comp
< num_components
; comp
++) {
3336 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, comp_start
+ comp
, false);
3337 if (bitsize
== 16) {
3338 values
[comp
] = ac_build_fs_interp_f16(&ctx
->ac
, llvm_chan
, attr_number
,
3339 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
), i
, j
);
3341 values
[comp
] = ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3342 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
), i
, j
);
3346 return ac_to_integer(&ctx
->ac
, ac_build_gather_values(&ctx
->ac
, values
, num_components
));
3349 static LLVMValueRef
load_input(struct ac_nir_context
*ctx
,
3350 nir_intrinsic_instr
*instr
)
3352 unsigned offset_idx
= instr
->intrinsic
== nir_intrinsic_load_input
? 0 : 1;
3354 /* We only lower inputs for fragment shaders ATM */
3355 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[offset_idx
]);
3357 assert(offset
[0].i32
== 0);
3359 unsigned component
= nir_intrinsic_component(instr
);
3360 unsigned index
= nir_intrinsic_base(instr
);
3361 unsigned vertex_id
= 2; /* P0 */
3363 if (instr
->intrinsic
== nir_intrinsic_load_input_vertex
) {
3364 nir_const_value
*src0
= nir_src_as_const_value(instr
->src
[0]);
3366 switch (src0
[0].i32
) {
3377 unreachable("Invalid vertex index");
3381 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3382 LLVMValueRef values
[8];
3384 /* Each component of a 64-bit value takes up two GL-level channels. */
3385 unsigned num_components
= instr
->dest
.ssa
.num_components
;
3386 unsigned bit_size
= instr
->dest
.ssa
.bit_size
;
3388 bit_size
== 64 ? num_components
* 2 : num_components
;
3390 for (unsigned chan
= 0; chan
< channels
; chan
++) {
3391 if (component
+ chan
> 4)
3392 attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
+ 1, false);
3393 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, (component
+ chan
) % 4, false);
3394 values
[chan
] = ac_build_fs_interp_mov(&ctx
->ac
,
3395 LLVMConstInt(ctx
->ac
.i32
, vertex_id
, false),
3398 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
));
3399 values
[chan
] = LLVMBuildBitCast(ctx
->ac
.builder
, values
[chan
], ctx
->ac
.i32
, "");
3400 values
[chan
] = LLVMBuildTruncOrBitCast(ctx
->ac
.builder
, values
[chan
],
3401 bit_size
== 16 ? ctx
->ac
.i16
: ctx
->ac
.i32
, "");
3404 LLVMValueRef result
= ac_build_gather_values(&ctx
->ac
, values
, channels
);
3405 if (bit_size
== 64) {
3406 LLVMTypeRef type
= num_components
== 1 ? ctx
->ac
.i64
:
3407 LLVMVectorType(ctx
->ac
.i64
, num_components
);
3408 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
, type
, "");
3413 static void visit_intrinsic(struct ac_nir_context
*ctx
,
3414 nir_intrinsic_instr
*instr
)
3416 LLVMValueRef result
= NULL
;
3418 switch (instr
->intrinsic
) {
3419 case nir_intrinsic_ballot
:
3420 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3421 if (ctx
->ac
.ballot_mask_bits
> ctx
->ac
.wave_size
)
3422 result
= LLVMBuildZExt(ctx
->ac
.builder
, result
, ctx
->ac
.iN_ballotmask
, "");
3424 case nir_intrinsic_read_invocation
:
3425 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3426 get_src(ctx
, instr
->src
[1]));
3428 case nir_intrinsic_read_first_invocation
:
3429 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
3431 case nir_intrinsic_load_subgroup_invocation
:
3432 result
= ac_get_thread_id(&ctx
->ac
);
3434 case nir_intrinsic_load_work_group_id
: {
3435 LLVMValueRef values
[3];
3437 for (int i
= 0; i
< 3; i
++) {
3438 values
[i
] = ctx
->args
->workgroup_ids
[i
].used
?
3439 ac_get_arg(&ctx
->ac
, ctx
->args
->workgroup_ids
[i
]) : ctx
->ac
.i32_0
;
3442 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
3445 case nir_intrinsic_load_base_vertex
:
3446 case nir_intrinsic_load_first_vertex
:
3447 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
3449 case nir_intrinsic_load_local_group_size
:
3450 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
3452 case nir_intrinsic_load_vertex_id
:
3453 result
= LLVMBuildAdd(ctx
->ac
.builder
,
3454 ac_get_arg(&ctx
->ac
, ctx
->args
->vertex_id
),
3455 ac_get_arg(&ctx
->ac
, ctx
->args
->base_vertex
), "");
3457 case nir_intrinsic_load_vertex_id_zero_base
: {
3458 result
= ctx
->abi
->vertex_id
;
3461 case nir_intrinsic_load_local_invocation_id
: {
3462 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->local_invocation_ids
);
3465 case nir_intrinsic_load_base_instance
:
3466 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->start_instance
);
3468 case nir_intrinsic_load_draw_id
:
3469 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->draw_id
);
3471 case nir_intrinsic_load_view_index
:
3472 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->view_index
);
3474 case nir_intrinsic_load_invocation_id
:
3475 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3476 result
= ac_unpack_param(&ctx
->ac
,
3477 ac_get_arg(&ctx
->ac
, ctx
->args
->tcs_rel_ids
),
3480 if (ctx
->ac
.chip_class
>= GFX10
) {
3481 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3482 ac_get_arg(&ctx
->ac
, ctx
->args
->gs_invocation_id
),
3483 LLVMConstInt(ctx
->ac
.i32
, 127, 0), "");
3485 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->gs_invocation_id
);
3489 case nir_intrinsic_load_primitive_id
:
3490 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3491 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->gs_prim_id
);
3492 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3493 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->tcs_patch_id
);
3494 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3495 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->tes_patch_id
);
3497 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3499 case nir_intrinsic_load_sample_id
:
3500 result
= ac_unpack_param(&ctx
->ac
,
3501 ac_get_arg(&ctx
->ac
, ctx
->args
->ancillary
),
3504 case nir_intrinsic_load_sample_pos
:
3505 result
= load_sample_pos(ctx
);
3507 case nir_intrinsic_load_sample_mask_in
:
3508 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3510 case nir_intrinsic_load_frag_coord
: {
3511 LLVMValueRef values
[4] = {
3512 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[0]),
3513 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[1]),
3514 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[2]),
3515 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
,
3516 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[3]))
3518 result
= ac_to_integer(&ctx
->ac
,
3519 ac_build_gather_values(&ctx
->ac
, values
, 4));
3522 case nir_intrinsic_load_layer_id
:
3523 result
= ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)];
3525 case nir_intrinsic_load_front_face
:
3526 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->front_face
);
3528 case nir_intrinsic_load_helper_invocation
:
3529 result
= ac_build_load_helper_invocation(&ctx
->ac
);
3531 case nir_intrinsic_is_helper_invocation
:
3532 result
= ac_build_is_helper_invocation(&ctx
->ac
);
3534 case nir_intrinsic_load_color0
:
3535 result
= ctx
->abi
->color0
;
3537 case nir_intrinsic_load_color1
:
3538 result
= ctx
->abi
->color1
;
3540 case nir_intrinsic_load_user_data_amd
:
3541 assert(LLVMTypeOf(ctx
->abi
->user_data
) == ctx
->ac
.v4i32
);
3542 result
= ctx
->abi
->user_data
;
3544 case nir_intrinsic_load_instance_id
:
3545 result
= ctx
->abi
->instance_id
;
3547 case nir_intrinsic_load_num_work_groups
:
3548 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->num_work_groups
);
3550 case nir_intrinsic_load_local_invocation_index
:
3551 result
= visit_load_local_invocation_index(ctx
);
3553 case nir_intrinsic_load_subgroup_id
:
3554 result
= visit_load_subgroup_id(ctx
);
3556 case nir_intrinsic_load_num_subgroups
:
3557 result
= visit_load_num_subgroups(ctx
);
3559 case nir_intrinsic_first_invocation
:
3560 result
= visit_first_invocation(ctx
);
3562 case nir_intrinsic_load_push_constant
:
3563 result
= visit_load_push_constant(ctx
, instr
);
3565 case nir_intrinsic_vulkan_resource_index
: {
3566 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3567 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3568 unsigned binding
= nir_intrinsic_binding(instr
);
3570 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3574 case nir_intrinsic_vulkan_resource_reindex
:
3575 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3577 case nir_intrinsic_store_ssbo
:
3578 visit_store_ssbo(ctx
, instr
);
3580 case nir_intrinsic_load_ssbo
:
3581 result
= visit_load_buffer(ctx
, instr
);
3583 case nir_intrinsic_ssbo_atomic_add
:
3584 case nir_intrinsic_ssbo_atomic_imin
:
3585 case nir_intrinsic_ssbo_atomic_umin
:
3586 case nir_intrinsic_ssbo_atomic_imax
:
3587 case nir_intrinsic_ssbo_atomic_umax
:
3588 case nir_intrinsic_ssbo_atomic_and
:
3589 case nir_intrinsic_ssbo_atomic_or
:
3590 case nir_intrinsic_ssbo_atomic_xor
:
3591 case nir_intrinsic_ssbo_atomic_exchange
:
3592 case nir_intrinsic_ssbo_atomic_comp_swap
:
3593 result
= visit_atomic_ssbo(ctx
, instr
);
3595 case nir_intrinsic_load_ubo
:
3596 result
= visit_load_ubo_buffer(ctx
, instr
);
3598 case nir_intrinsic_get_buffer_size
:
3599 result
= visit_get_buffer_size(ctx
, instr
);
3601 case nir_intrinsic_load_deref
:
3602 result
= visit_load_var(ctx
, instr
);
3604 case nir_intrinsic_store_deref
:
3605 visit_store_var(ctx
, instr
);
3607 case nir_intrinsic_load_shared
:
3608 result
= visit_load_shared(ctx
, instr
);
3610 case nir_intrinsic_store_shared
:
3611 visit_store_shared(ctx
, instr
);
3613 case nir_intrinsic_bindless_image_samples
:
3614 case nir_intrinsic_image_deref_samples
:
3615 result
= visit_image_samples(ctx
, instr
);
3617 case nir_intrinsic_bindless_image_load
:
3618 result
= visit_image_load(ctx
, instr
, true);
3620 case nir_intrinsic_image_deref_load
:
3621 result
= visit_image_load(ctx
, instr
, false);
3623 case nir_intrinsic_bindless_image_store
:
3624 visit_image_store(ctx
, instr
, true);
3626 case nir_intrinsic_image_deref_store
:
3627 visit_image_store(ctx
, instr
, false);
3629 case nir_intrinsic_bindless_image_atomic_add
:
3630 case nir_intrinsic_bindless_image_atomic_imin
:
3631 case nir_intrinsic_bindless_image_atomic_umin
:
3632 case nir_intrinsic_bindless_image_atomic_imax
:
3633 case nir_intrinsic_bindless_image_atomic_umax
:
3634 case nir_intrinsic_bindless_image_atomic_and
:
3635 case nir_intrinsic_bindless_image_atomic_or
:
3636 case nir_intrinsic_bindless_image_atomic_xor
:
3637 case nir_intrinsic_bindless_image_atomic_exchange
:
3638 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3639 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
3640 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
3641 result
= visit_image_atomic(ctx
, instr
, true);
3643 case nir_intrinsic_image_deref_atomic_add
:
3644 case nir_intrinsic_image_deref_atomic_imin
:
3645 case nir_intrinsic_image_deref_atomic_umin
:
3646 case nir_intrinsic_image_deref_atomic_imax
:
3647 case nir_intrinsic_image_deref_atomic_umax
:
3648 case nir_intrinsic_image_deref_atomic_and
:
3649 case nir_intrinsic_image_deref_atomic_or
:
3650 case nir_intrinsic_image_deref_atomic_xor
:
3651 case nir_intrinsic_image_deref_atomic_exchange
:
3652 case nir_intrinsic_image_deref_atomic_comp_swap
:
3653 case nir_intrinsic_image_deref_atomic_inc_wrap
:
3654 case nir_intrinsic_image_deref_atomic_dec_wrap
:
3655 result
= visit_image_atomic(ctx
, instr
, false);
3657 case nir_intrinsic_bindless_image_size
:
3658 result
= visit_image_size(ctx
, instr
, true);
3660 case nir_intrinsic_image_deref_size
:
3661 result
= visit_image_size(ctx
, instr
, false);
3663 case nir_intrinsic_shader_clock
:
3664 result
= ac_build_shader_clock(&ctx
->ac
);
3666 case nir_intrinsic_discard
:
3667 case nir_intrinsic_discard_if
:
3668 emit_discard(ctx
, instr
);
3670 case nir_intrinsic_demote
:
3671 case nir_intrinsic_demote_if
:
3672 emit_demote(ctx
, instr
);
3674 case nir_intrinsic_memory_barrier
:
3675 case nir_intrinsic_group_memory_barrier
:
3676 case nir_intrinsic_memory_barrier_buffer
:
3677 case nir_intrinsic_memory_barrier_image
:
3678 case nir_intrinsic_memory_barrier_shared
:
3679 emit_membar(&ctx
->ac
, instr
);
3681 case nir_intrinsic_memory_barrier_tcs_patch
:
3683 case nir_intrinsic_control_barrier
:
3684 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
3686 case nir_intrinsic_shared_atomic_add
:
3687 case nir_intrinsic_shared_atomic_imin
:
3688 case nir_intrinsic_shared_atomic_umin
:
3689 case nir_intrinsic_shared_atomic_imax
:
3690 case nir_intrinsic_shared_atomic_umax
:
3691 case nir_intrinsic_shared_atomic_and
:
3692 case nir_intrinsic_shared_atomic_or
:
3693 case nir_intrinsic_shared_atomic_xor
:
3694 case nir_intrinsic_shared_atomic_exchange
:
3695 case nir_intrinsic_shared_atomic_comp_swap
: {
3696 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0],
3697 instr
->src
[1].ssa
->bit_size
);
3698 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3701 case nir_intrinsic_deref_atomic_add
:
3702 case nir_intrinsic_deref_atomic_imin
:
3703 case nir_intrinsic_deref_atomic_umin
:
3704 case nir_intrinsic_deref_atomic_imax
:
3705 case nir_intrinsic_deref_atomic_umax
:
3706 case nir_intrinsic_deref_atomic_and
:
3707 case nir_intrinsic_deref_atomic_or
:
3708 case nir_intrinsic_deref_atomic_xor
:
3709 case nir_intrinsic_deref_atomic_exchange
:
3710 case nir_intrinsic_deref_atomic_comp_swap
: {
3711 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
3712 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3715 case nir_intrinsic_load_barycentric_pixel
:
3716 result
= barycentric_center(ctx
, nir_intrinsic_interp_mode(instr
));
3718 case nir_intrinsic_load_barycentric_centroid
:
3719 result
= barycentric_centroid(ctx
, nir_intrinsic_interp_mode(instr
));
3721 case nir_intrinsic_load_barycentric_sample
:
3722 result
= barycentric_sample(ctx
, nir_intrinsic_interp_mode(instr
));
3724 case nir_intrinsic_load_barycentric_model
:
3725 result
= barycentric_model(ctx
);
3727 case nir_intrinsic_load_barycentric_at_offset
: {
3728 LLVMValueRef offset
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3729 result
= barycentric_offset(ctx
, nir_intrinsic_interp_mode(instr
), offset
);
3732 case nir_intrinsic_load_barycentric_at_sample
: {
3733 LLVMValueRef sample_id
= get_src(ctx
, instr
->src
[0]);
3734 result
= barycentric_at_sample(ctx
, nir_intrinsic_interp_mode(instr
), sample_id
);
3737 case nir_intrinsic_load_interpolated_input
: {
3738 /* We assume any indirect loads have been lowered away */
3739 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[1]);
3741 assert(offset
[0].i32
== 0);
3743 LLVMValueRef interp_param
= get_src(ctx
, instr
->src
[0]);
3744 unsigned index
= nir_intrinsic_base(instr
);
3745 unsigned component
= nir_intrinsic_component(instr
);
3746 result
= load_interpolated_input(ctx
, interp_param
, index
,
3748 instr
->dest
.ssa
.num_components
,
3749 instr
->dest
.ssa
.bit_size
);
3752 case nir_intrinsic_load_input
:
3753 case nir_intrinsic_load_input_vertex
:
3754 result
= load_input(ctx
, instr
);
3756 case nir_intrinsic_emit_vertex
:
3757 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
3759 case nir_intrinsic_end_primitive
:
3760 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
3762 case nir_intrinsic_load_tess_coord
:
3763 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
3765 case nir_intrinsic_load_tess_level_outer
:
3766 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, false);
3768 case nir_intrinsic_load_tess_level_inner
:
3769 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, false);
3771 case nir_intrinsic_load_tess_level_outer_default
:
3772 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, true);
3774 case nir_intrinsic_load_tess_level_inner_default
:
3775 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, true);
3777 case nir_intrinsic_load_patch_vertices_in
:
3778 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
3780 case nir_intrinsic_vote_all
: {
3781 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3782 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3785 case nir_intrinsic_vote_any
: {
3786 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3787 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3790 case nir_intrinsic_shuffle
:
3791 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3792 get_src(ctx
, instr
->src
[1]));
3794 case nir_intrinsic_reduce
:
3795 result
= ac_build_reduce(&ctx
->ac
,
3796 get_src(ctx
, instr
->src
[0]),
3797 instr
->const_index
[0],
3798 instr
->const_index
[1]);
3800 case nir_intrinsic_inclusive_scan
:
3801 result
= ac_build_inclusive_scan(&ctx
->ac
,
3802 get_src(ctx
, instr
->src
[0]),
3803 instr
->const_index
[0]);
3805 case nir_intrinsic_exclusive_scan
:
3806 result
= ac_build_exclusive_scan(&ctx
->ac
,
3807 get_src(ctx
, instr
->src
[0]),
3808 instr
->const_index
[0]);
3810 case nir_intrinsic_quad_broadcast
: {
3811 unsigned lane
= nir_src_as_uint(instr
->src
[1]);
3812 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3813 lane
, lane
, lane
, lane
);
3816 case nir_intrinsic_quad_swap_horizontal
:
3817 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
3819 case nir_intrinsic_quad_swap_vertical
:
3820 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
3822 case nir_intrinsic_quad_swap_diagonal
:
3823 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
3825 case nir_intrinsic_quad_swizzle_amd
: {
3826 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3827 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3828 mask
& 0x3, (mask
>> 2) & 0x3,
3829 (mask
>> 4) & 0x3, (mask
>> 6) & 0x3);
3832 case nir_intrinsic_masked_swizzle_amd
: {
3833 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3834 result
= ac_build_ds_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), mask
);
3837 case nir_intrinsic_write_invocation_amd
:
3838 result
= ac_build_writelane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3839 get_src(ctx
, instr
->src
[1]),
3840 get_src(ctx
, instr
->src
[2]));
3842 case nir_intrinsic_mbcnt_amd
:
3843 result
= ac_build_mbcnt(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3845 case nir_intrinsic_load_scratch
: {
3846 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
3847 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
3849 LLVMTypeRef comp_type
=
3850 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
3851 LLVMTypeRef vec_type
=
3852 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
3853 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
3854 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
3855 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
3856 LLVMPointerType(vec_type
, addr_space
), "");
3857 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
3860 case nir_intrinsic_store_scratch
: {
3861 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
3862 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
3864 LLVMTypeRef comp_type
=
3865 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->src
[0].ssa
->bit_size
);
3866 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
3867 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
3868 LLVMPointerType(comp_type
, addr_space
), "");
3869 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
3870 unsigned wrmask
= nir_intrinsic_write_mask(instr
);
3873 u_bit_scan_consecutive_range(&wrmask
, &start
, &count
);
3875 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, start
, false);
3876 LLVMValueRef offset_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &offset
, 1, "");
3877 LLVMTypeRef vec_type
=
3878 count
== 1 ? comp_type
: LLVMVectorType(comp_type
, count
);
3879 offset_ptr
= LLVMBuildBitCast(ctx
->ac
.builder
,
3881 LLVMPointerType(vec_type
, addr_space
),
3883 LLVMValueRef offset_src
=
3884 ac_extract_components(&ctx
->ac
, src
, start
, count
);
3885 LLVMBuildStore(ctx
->ac
.builder
, offset_src
, offset_ptr
);
3889 case nir_intrinsic_load_constant
: {
3890 unsigned base
= nir_intrinsic_base(instr
);
3891 unsigned range
= nir_intrinsic_range(instr
);
3893 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
3894 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
3895 LLVMConstInt(ctx
->ac
.i32
, base
, false), "");
3897 /* Clamp the offset to avoid out-of-bound access because global
3898 * instructions can't handle them.
3900 LLVMValueRef size
= LLVMConstInt(ctx
->ac
.i32
, base
+ range
, false);
3901 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
,
3903 offset
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, offset
, size
, "");
3905 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->constant_data
,
3907 LLVMTypeRef comp_type
=
3908 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
3909 LLVMTypeRef vec_type
=
3910 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
3911 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
3912 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
3913 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
3914 LLVMPointerType(vec_type
, addr_space
), "");
3915 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
3919 fprintf(stderr
, "Unknown intrinsic: ");
3920 nir_print_instr(&instr
->instr
, stderr
);
3921 fprintf(stderr
, "\n");
3925 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
3929 static LLVMValueRef
get_bindless_index_from_uniform(struct ac_nir_context
*ctx
,
3930 unsigned base_index
,
3931 unsigned constant_index
,
3932 LLVMValueRef dynamic_index
)
3934 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, base_index
* 4, 0);
3935 LLVMValueRef index
= LLVMBuildAdd(ctx
->ac
.builder
, dynamic_index
,
3936 LLVMConstInt(ctx
->ac
.i32
, constant_index
, 0), "");
3938 /* Bindless uniforms are 64bit so multiple index by 8 */
3939 index
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i32
, 8, 0), "");
3940 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, index
, "");
3942 LLVMValueRef ubo_index
= ctx
->abi
->load_ubo(ctx
->abi
, ctx
->ac
.i32_0
);
3944 LLVMValueRef ret
= ac_build_buffer_load(&ctx
->ac
, ubo_index
, 1, NULL
, offset
,
3945 NULL
, 0, 0, true, true);
3947 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ctx
->ac
.i32
, "");
3950 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
3951 nir_deref_instr
*deref_instr
,
3952 enum ac_descriptor_type desc_type
,
3953 const nir_instr
*instr
,
3954 bool image
, bool write
)
3956 LLVMValueRef index
= NULL
;
3957 unsigned constant_index
= 0;
3958 unsigned descriptor_set
;
3959 unsigned base_index
;
3960 bool bindless
= false;
3965 nir_intrinsic_instr
*img_instr
= nir_instr_as_intrinsic(instr
);
3968 index
= get_src(ctx
, img_instr
->src
[0]);
3970 nir_tex_instr
*tex_instr
= nir_instr_as_tex(instr
);
3971 int sampSrcIdx
= nir_tex_instr_src_index(tex_instr
,
3972 nir_tex_src_sampler_handle
);
3973 if (sampSrcIdx
!= -1) {
3976 index
= get_src(ctx
, tex_instr
->src
[sampSrcIdx
].src
);
3978 assert(tex_instr
&& !image
);
3979 base_index
= tex_instr
->sampler_index
;
3983 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
3984 if (deref_instr
->deref_type
== nir_deref_type_array
) {
3985 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
3989 if (nir_src_is_const(deref_instr
->arr
.index
)) {
3990 constant_index
+= array_size
* nir_src_as_uint(deref_instr
->arr
.index
);
3992 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
3994 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
3995 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
4000 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
4003 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
4004 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
4005 unsigned sidx
= deref_instr
->strct
.index
;
4006 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
4007 constant_index
+= glsl_get_struct_location_offset(deref_instr
->type
, sidx
);
4009 unreachable("Unsupported deref type");
4012 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
4014 if (deref_instr
->var
->data
.bindless
) {
4015 /* For now just assert on unhandled variable types */
4016 assert(deref_instr
->var
->data
.mode
== nir_var_uniform
);
4018 base_index
= deref_instr
->var
->data
.driver_location
;
4021 index
= index
? index
: ctx
->ac
.i32_0
;
4022 index
= get_bindless_index_from_uniform(ctx
, base_index
,
4023 constant_index
, index
);
4025 base_index
= deref_instr
->var
->data
.binding
;
4028 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
4031 constant_index
, index
,
4032 desc_type
, image
, write
, bindless
);
4035 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
4038 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
4039 * filtering manually. The driver sets img7 to a mask clearing
4040 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
4041 * s_and_b32 samp0, samp0, img7
4044 * The ANISO_OVERRIDE sampler field enables this fix in TA.
4046 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
4047 LLVMValueRef res
, LLVMValueRef samp
)
4049 LLVMBuilderRef builder
= ctx
->ac
.builder
;
4050 LLVMValueRef img7
, samp0
;
4052 if (ctx
->ac
.chip_class
>= GFX8
)
4055 img7
= LLVMBuildExtractElement(builder
, res
,
4056 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
4057 samp0
= LLVMBuildExtractElement(builder
, samp
,
4058 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
4059 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
4060 return LLVMBuildInsertElement(builder
, samp
, samp0
,
4061 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
4064 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
4065 nir_tex_instr
*instr
,
4066 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
4067 LLVMValueRef
*fmask_ptr
)
4069 nir_deref_instr
*texture_deref_instr
= NULL
;
4070 nir_deref_instr
*sampler_deref_instr
= NULL
;
4073 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
4074 switch (instr
->src
[i
].src_type
) {
4075 case nir_tex_src_texture_deref
:
4076 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
4078 case nir_tex_src_sampler_deref
:
4079 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
4081 case nir_tex_src_plane
:
4082 plane
= nir_src_as_int(instr
->src
[i
].src
);
4089 if (!sampler_deref_instr
)
4090 sampler_deref_instr
= texture_deref_instr
;
4092 enum ac_descriptor_type main_descriptor
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
? AC_DESC_BUFFER
: AC_DESC_IMAGE
;
4095 assert(instr
->op
!= nir_texop_txf_ms
&&
4096 instr
->op
!= nir_texop_samples_identical
);
4097 assert(instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
);
4099 main_descriptor
= AC_DESC_PLANE_0
+ plane
;
4102 if (instr
->op
== nir_texop_fragment_mask_fetch
) {
4103 /* The fragment mask is fetched from the compressed
4104 * multisampled surface.
4106 main_descriptor
= AC_DESC_FMASK
;
4109 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, main_descriptor
, &instr
->instr
, false, false);
4112 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, &instr
->instr
, false, false);
4113 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
4114 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
4116 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
4117 instr
->op
== nir_texop_samples_identical
))
4118 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
, &instr
->instr
, false, false);
4121 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
4124 coord
= ac_to_float(ctx
, coord
);
4125 coord
= ac_build_round(ctx
, coord
);
4126 coord
= ac_to_integer(ctx
, coord
);
4130 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
4132 LLVMValueRef result
= NULL
;
4133 struct ac_image_args args
= { 0 };
4134 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
4135 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
4136 unsigned offset_src
= 0;
4138 tex_fetch_ptrs(ctx
, instr
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
4140 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
4141 switch (instr
->src
[i
].src_type
) {
4142 case nir_tex_src_coord
: {
4143 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
4144 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
4145 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
4148 case nir_tex_src_projector
:
4150 case nir_tex_src_comparator
:
4151 if (instr
->is_shadow
) {
4152 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
4153 args
.compare
= ac_to_float(&ctx
->ac
, args
.compare
);
4156 case nir_tex_src_offset
:
4157 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
4160 case nir_tex_src_bias
:
4161 if (instr
->op
== nir_texop_txb
)
4162 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
4164 case nir_tex_src_lod
: {
4165 if (nir_src_is_const(instr
->src
[i
].src
) && nir_src_as_uint(instr
->src
[i
].src
) == 0)
4166 args
.level_zero
= true;
4168 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
4171 case nir_tex_src_ms_index
:
4172 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
4174 case nir_tex_src_ms_mcs
:
4176 case nir_tex_src_ddx
:
4177 ddx
= get_src(ctx
, instr
->src
[i
].src
);
4179 case nir_tex_src_ddy
:
4180 ddy
= get_src(ctx
, instr
->src
[i
].src
);
4182 case nir_tex_src_texture_offset
:
4183 case nir_tex_src_sampler_offset
:
4184 case nir_tex_src_plane
:
4190 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
4191 result
= get_buffer_size(ctx
, args
.resource
, true);
4195 if (instr
->op
== nir_texop_texture_samples
) {
4196 LLVMValueRef res
, samples
, is_msaa
;
4197 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
4198 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
4199 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4200 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4201 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
4202 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
4203 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4204 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
4205 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4207 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4208 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
4209 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
4210 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
4211 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
4213 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
4219 if (args
.offset
&& instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
4220 LLVMValueRef offset
[3], pack
;
4221 for (unsigned chan
= 0; chan
< 3; ++chan
)
4222 offset
[chan
] = ctx
->ac
.i32_0
;
4224 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
4225 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
4226 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
4227 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
4228 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
4230 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
4231 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
4233 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
4234 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
4238 /* Section 8.23.1 (Depth Texture Comparison Mode) of the
4239 * OpenGL 4.5 spec says:
4241 * "If the texture’s internal format indicates a fixed-point
4242 * depth texture, then D_t and D_ref are clamped to the
4243 * range [0, 1]; otherwise no clamping is performed."
4245 * TC-compatible HTILE promotes Z16 and Z24 to Z32_FLOAT,
4246 * so the depth comparison value isn't clamped for Z16 and
4247 * Z24 anymore. Do it manually here for GFX8-9; GFX10 has
4248 * an explicitly clamped 32-bit float format.
4251 ctx
->ac
.chip_class
>= GFX8
&&
4252 ctx
->ac
.chip_class
<= GFX9
&&
4253 ctx
->abi
->clamp_shadow_reference
) {
4254 LLVMValueRef upgraded
, clamped
;
4256 upgraded
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
.sampler
,
4257 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4258 upgraded
= LLVMBuildLShr(ctx
->ac
.builder
, upgraded
,
4259 LLVMConstInt(ctx
->ac
.i32
, 29, false), "");
4260 upgraded
= LLVMBuildTrunc(ctx
->ac
.builder
, upgraded
, ctx
->ac
.i1
, "");
4261 clamped
= ac_build_clamp(&ctx
->ac
, args
.compare
);
4262 args
.compare
= LLVMBuildSelect(ctx
->ac
.builder
, upgraded
, clamped
,
4266 /* pack derivatives */
4268 int num_src_deriv_channels
, num_dest_deriv_channels
;
4269 switch (instr
->sampler_dim
) {
4270 case GLSL_SAMPLER_DIM_3D
:
4271 case GLSL_SAMPLER_DIM_CUBE
:
4272 num_src_deriv_channels
= 3;
4273 num_dest_deriv_channels
= 3;
4275 case GLSL_SAMPLER_DIM_2D
:
4277 num_src_deriv_channels
= 2;
4278 num_dest_deriv_channels
= 2;
4280 case GLSL_SAMPLER_DIM_1D
:
4281 num_src_deriv_channels
= 1;
4282 if (ctx
->ac
.chip_class
== GFX9
) {
4283 num_dest_deriv_channels
= 2;
4285 num_dest_deriv_channels
= 1;
4290 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
4291 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
4292 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
4293 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
4294 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
4296 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
4297 args
.derivs
[i
] = ctx
->ac
.f32_0
;
4298 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
4302 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
4303 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
4304 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
4305 if (instr
->coord_components
== 3)
4306 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
4307 ac_prepare_cube_coords(&ctx
->ac
,
4308 instr
->op
== nir_texop_txd
, instr
->is_array
,
4309 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
4312 /* Texture coordinates fixups */
4313 if (instr
->coord_components
> 1 &&
4314 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4316 instr
->op
!= nir_texop_txf
) {
4317 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
4320 if (instr
->coord_components
> 2 &&
4321 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
4322 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
4323 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
4324 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
4326 instr
->op
!= nir_texop_txf
&&
4327 instr
->op
!= nir_texop_txf_ms
&&
4328 instr
->op
!= nir_texop_fragment_fetch
&&
4329 instr
->op
!= nir_texop_fragment_mask_fetch
) {
4330 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
4333 if (ctx
->ac
.chip_class
== GFX9
&&
4334 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4335 instr
->op
!= nir_texop_lod
) {
4336 LLVMValueRef filler
;
4337 if (instr
->op
== nir_texop_txf
)
4338 filler
= ctx
->ac
.i32_0
;
4340 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
4342 if (instr
->is_array
)
4343 args
.coords
[2] = args
.coords
[1];
4344 args
.coords
[1] = filler
;
4347 /* Pack sample index */
4348 if (sample_index
&& (instr
->op
== nir_texop_txf_ms
||
4349 instr
->op
== nir_texop_fragment_fetch
))
4350 args
.coords
[instr
->coord_components
] = sample_index
;
4352 if (instr
->op
== nir_texop_samples_identical
) {
4353 struct ac_image_args txf_args
= { 0 };
4354 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
4356 txf_args
.dmask
= 0xf;
4357 txf_args
.resource
= fmask_ptr
;
4358 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
4359 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
4361 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4362 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
4366 if ((instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
||
4367 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
) &&
4368 instr
->op
!= nir_texop_txs
&&
4369 instr
->op
!= nir_texop_fragment_fetch
&&
4370 instr
->op
!= nir_texop_fragment_mask_fetch
) {
4371 unsigned sample_chan
= instr
->is_array
? 3 : 2;
4372 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
4373 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
4374 instr
->is_array
? args
.coords
[2] : NULL
,
4375 args
.coords
[sample_chan
], fmask_ptr
);
4378 if (args
.offset
&& (instr
->op
== nir_texop_txf
|| instr
->op
== nir_texop_txf_ms
)) {
4379 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
4380 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
4381 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
4382 args
.coords
[i
] = LLVMBuildAdd(
4383 ctx
->ac
.builder
, args
.coords
[i
],
4384 LLVMConstInt(ctx
->ac
.i32
, nir_src_comp_as_uint(instr
->src
[offset_src
].src
, i
), false), "");
4389 /* DMASK was repurposed for GATHER4. 4 components are always
4390 * returned and DMASK works like a swizzle - it selects
4391 * the component to fetch. The only valid DMASK values are
4392 * 1=red, 2=green, 4=blue, 8=alpha. (e.g. 1 returns
4393 * (red,red,red,red) etc.) The ISA document doesn't mention
4397 if (instr
->op
== nir_texop_tg4
) {
4398 if (instr
->is_shadow
)
4401 args
.dmask
= 1 << instr
->component
;
4404 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
) {
4405 args
.dim
= ac_get_sampler_dim(ctx
->ac
.chip_class
, instr
->sampler_dim
, instr
->is_array
);
4406 args
.unorm
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
;
4409 /* Adjust the number of coordinates because we only need (x,y) for 2D
4410 * multisampled images and (x,y,layer) for 2D multisampled layered
4411 * images or for multisampled input attachments.
4413 if (instr
->op
== nir_texop_fragment_mask_fetch
) {
4414 if (args
.dim
== ac_image_2dmsaa
) {
4415 args
.dim
= ac_image_2d
;
4417 assert(args
.dim
== ac_image_2darraymsaa
);
4418 args
.dim
= ac_image_2darray
;
4422 result
= build_tex_intrinsic(ctx
, instr
, &args
);
4424 if (instr
->op
== nir_texop_query_levels
)
4425 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4426 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
4427 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
4428 instr
->op
!= nir_texop_tg4
)
4429 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4430 else if (instr
->op
== nir_texop_txs
&&
4431 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
4433 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4434 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
4435 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4436 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
4437 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
4438 } else if (ctx
->ac
.chip_class
== GFX9
&&
4439 instr
->op
== nir_texop_txs
&&
4440 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4442 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4443 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4444 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
4446 } else if (instr
->dest
.ssa
.num_components
!= 4)
4447 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
4451 assert(instr
->dest
.is_ssa
);
4452 result
= ac_to_integer(&ctx
->ac
, result
);
4453 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4458 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
4460 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
4461 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
4463 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4464 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
4467 static void visit_post_phi(struct ac_nir_context
*ctx
,
4468 nir_phi_instr
*instr
,
4469 LLVMValueRef llvm_phi
)
4471 nir_foreach_phi_src(src
, instr
) {
4472 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
4473 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
4475 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
4479 static void phi_post_pass(struct ac_nir_context
*ctx
)
4481 hash_table_foreach(ctx
->phis
, entry
) {
4482 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
4483 (LLVMValueRef
)entry
->data
);
4488 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
4489 const nir_ssa_undef_instr
*instr
)
4491 unsigned num_components
= instr
->def
.num_components
;
4492 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
4495 if (num_components
== 1)
4496 undef
= LLVMGetUndef(type
);
4498 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
4500 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
4503 static void visit_jump(struct ac_llvm_context
*ctx
,
4504 const nir_jump_instr
*instr
)
4506 switch (instr
->type
) {
4507 case nir_jump_break
:
4508 ac_build_break(ctx
);
4510 case nir_jump_continue
:
4511 ac_build_continue(ctx
);
4514 fprintf(stderr
, "Unknown NIR jump instr: ");
4515 nir_print_instr(&instr
->instr
, stderr
);
4516 fprintf(stderr
, "\n");
4522 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
4523 enum glsl_base_type type
)
4527 case GLSL_TYPE_UINT
:
4528 case GLSL_TYPE_BOOL
:
4529 case GLSL_TYPE_SUBROUTINE
:
4531 case GLSL_TYPE_INT8
:
4532 case GLSL_TYPE_UINT8
:
4534 case GLSL_TYPE_INT16
:
4535 case GLSL_TYPE_UINT16
:
4537 case GLSL_TYPE_FLOAT
:
4539 case GLSL_TYPE_FLOAT16
:
4541 case GLSL_TYPE_INT64
:
4542 case GLSL_TYPE_UINT64
:
4544 case GLSL_TYPE_DOUBLE
:
4547 unreachable("unknown GLSL type");
4552 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
4553 const struct glsl_type
*type
)
4555 if (glsl_type_is_scalar(type
)) {
4556 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
4559 if (glsl_type_is_vector(type
)) {
4560 return LLVMVectorType(
4561 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
4562 glsl_get_vector_elements(type
));
4565 if (glsl_type_is_matrix(type
)) {
4566 return LLVMArrayType(
4567 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
4568 glsl_get_matrix_columns(type
));
4571 if (glsl_type_is_array(type
)) {
4572 return LLVMArrayType(
4573 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
4574 glsl_get_length(type
));
4577 assert(glsl_type_is_struct_or_ifc(type
));
4579 LLVMTypeRef member_types
[glsl_get_length(type
)];
4581 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
4583 glsl_to_llvm_type(ac
,
4584 glsl_get_struct_field(type
, i
));
4587 return LLVMStructTypeInContext(ac
->context
, member_types
,
4588 glsl_get_length(type
), false);
4591 static void visit_deref(struct ac_nir_context
*ctx
,
4592 nir_deref_instr
*instr
)
4594 if (instr
->mode
!= nir_var_mem_shared
&&
4595 instr
->mode
!= nir_var_mem_global
)
4598 LLVMValueRef result
= NULL
;
4599 switch(instr
->deref_type
) {
4600 case nir_deref_type_var
: {
4601 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
4602 result
= entry
->data
;
4605 case nir_deref_type_struct
:
4606 if (instr
->mode
== nir_var_mem_global
) {
4607 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4608 uint64_t offset
= glsl_get_struct_field_offset(parent
->type
,
4609 instr
->strct
.index
);
4610 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4611 LLVMConstInt(ctx
->ac
.i32
, offset
, 0));
4613 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4614 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
4617 case nir_deref_type_array
:
4618 if (instr
->mode
== nir_var_mem_global
) {
4619 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4620 unsigned stride
= glsl_get_explicit_stride(parent
->type
);
4622 if ((glsl_type_is_matrix(parent
->type
) &&
4623 glsl_matrix_type_is_row_major(parent
->type
)) ||
4624 (glsl_type_is_vector(parent
->type
) && stride
== 0))
4625 stride
= type_scalar_size_bytes(parent
->type
);
4628 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4629 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4630 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4632 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4634 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4636 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4637 get_src(ctx
, instr
->arr
.index
));
4640 case nir_deref_type_ptr_as_array
:
4641 if (instr
->mode
== nir_var_mem_global
) {
4642 unsigned stride
= nir_deref_instr_ptr_as_array_stride(instr
);
4644 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4645 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4646 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4648 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4650 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4652 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4653 get_src(ctx
, instr
->arr
.index
));
4656 case nir_deref_type_cast
: {
4657 result
= get_src(ctx
, instr
->parent
);
4659 /* We can't use the structs from LLVM because the shader
4660 * specifies its own offsets. */
4661 LLVMTypeRef pointee_type
= ctx
->ac
.i8
;
4662 if (instr
->mode
== nir_var_mem_shared
)
4663 pointee_type
= glsl_to_llvm_type(&ctx
->ac
, instr
->type
);
4665 unsigned address_space
;
4667 switch(instr
->mode
) {
4668 case nir_var_mem_shared
:
4669 address_space
= AC_ADDR_SPACE_LDS
;
4671 case nir_var_mem_global
:
4672 address_space
= AC_ADDR_SPACE_GLOBAL
;
4675 unreachable("Unhandled address space");
4678 LLVMTypeRef type
= LLVMPointerType(pointee_type
, address_space
);
4680 if (LLVMTypeOf(result
) != type
) {
4681 if (LLVMGetTypeKind(LLVMTypeOf(result
)) == LLVMVectorTypeKind
) {
4682 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
,
4685 result
= LLVMBuildIntToPtr(ctx
->ac
.builder
, result
,
4692 unreachable("Unhandled deref_instr deref type");
4695 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4698 static void visit_cf_list(struct ac_nir_context
*ctx
,
4699 struct exec_list
*list
);
4701 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
4703 nir_foreach_instr(instr
, block
)
4705 switch (instr
->type
) {
4706 case nir_instr_type_alu
:
4707 visit_alu(ctx
, nir_instr_as_alu(instr
));
4709 case nir_instr_type_load_const
:
4710 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
4712 case nir_instr_type_intrinsic
:
4713 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
4715 case nir_instr_type_tex
:
4716 visit_tex(ctx
, nir_instr_as_tex(instr
));
4718 case nir_instr_type_phi
:
4719 visit_phi(ctx
, nir_instr_as_phi(instr
));
4721 case nir_instr_type_ssa_undef
:
4722 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
4724 case nir_instr_type_jump
:
4725 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
4727 case nir_instr_type_deref
:
4728 visit_deref(ctx
, nir_instr_as_deref(instr
));
4731 fprintf(stderr
, "Unknown NIR instr type: ");
4732 nir_print_instr(instr
, stderr
);
4733 fprintf(stderr
, "\n");
4738 _mesa_hash_table_insert(ctx
->defs
, block
,
4739 LLVMGetInsertBlock(ctx
->ac
.builder
));
4742 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
4744 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
4746 nir_block
*then_block
=
4747 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
4749 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
4751 visit_cf_list(ctx
, &if_stmt
->then_list
);
4753 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
4754 nir_block
*else_block
=
4755 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
4757 ac_build_else(&ctx
->ac
, else_block
->index
);
4758 visit_cf_list(ctx
, &if_stmt
->else_list
);
4761 ac_build_endif(&ctx
->ac
, then_block
->index
);
4764 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
4766 nir_block
*first_loop_block
=
4767 (nir_block
*) exec_list_get_head(&loop
->body
);
4769 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
4771 visit_cf_list(ctx
, &loop
->body
);
4773 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
4776 static void visit_cf_list(struct ac_nir_context
*ctx
,
4777 struct exec_list
*list
)
4779 foreach_list_typed(nir_cf_node
, node
, node
, list
)
4781 switch (node
->type
) {
4782 case nir_cf_node_block
:
4783 visit_block(ctx
, nir_cf_node_as_block(node
));
4786 case nir_cf_node_if
:
4787 visit_if(ctx
, nir_cf_node_as_if(node
));
4790 case nir_cf_node_loop
:
4791 visit_loop(ctx
, nir_cf_node_as_loop(node
));
4801 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
4802 struct ac_shader_abi
*abi
,
4803 struct nir_shader
*nir
,
4804 struct nir_variable
*variable
,
4805 gl_shader_stage stage
)
4807 unsigned output_loc
= variable
->data
.driver_location
/ 4;
4808 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4810 /* tess ctrl has it's own load/store paths for outputs */
4811 if (stage
== MESA_SHADER_TESS_CTRL
)
4814 if (stage
== MESA_SHADER_VERTEX
||
4815 stage
== MESA_SHADER_TESS_EVAL
||
4816 stage
== MESA_SHADER_GEOMETRY
) {
4817 int idx
= variable
->data
.location
+ variable
->data
.index
;
4818 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
4819 int length
= nir
->info
.clip_distance_array_size
+
4820 nir
->info
.cull_distance_array_size
;
4829 bool is_16bit
= glsl_type_is_16bit(glsl_without_array(variable
->type
));
4830 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
4831 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
4832 for (unsigned chan
= 0; chan
< 4; chan
++) {
4833 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
4834 ac_build_alloca_undef(ctx
, type
, "");
4840 setup_locals(struct ac_nir_context
*ctx
,
4841 struct nir_function
*func
)
4844 ctx
->num_locals
= 0;
4845 nir_foreach_variable(variable
, &func
->impl
->locals
) {
4846 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
4847 variable
->data
.driver_location
= ctx
->num_locals
* 4;
4848 variable
->data
.location_frac
= 0;
4849 ctx
->num_locals
+= attrib_count
;
4851 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
4855 for (i
= 0; i
< ctx
->num_locals
; i
++) {
4856 for (j
= 0; j
< 4; j
++) {
4857 ctx
->locals
[i
* 4 + j
] =
4858 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
4864 setup_scratch(struct ac_nir_context
*ctx
,
4865 struct nir_shader
*shader
)
4867 if (shader
->scratch_size
== 0)
4870 ctx
->scratch
= ac_build_alloca_undef(&ctx
->ac
,
4871 LLVMArrayType(ctx
->ac
.i8
, shader
->scratch_size
),
4876 setup_constant_data(struct ac_nir_context
*ctx
,
4877 struct nir_shader
*shader
)
4879 if (!shader
->constant_data
)
4883 LLVMConstStringInContext(ctx
->ac
.context
,
4884 shader
->constant_data
,
4885 shader
->constant_data_size
,
4887 LLVMTypeRef type
= LLVMArrayType(ctx
->ac
.i8
, shader
->constant_data_size
);
4889 /* We want to put the constant data in the CONST address space so that
4890 * we can use scalar loads. However, LLVM versions before 10 put these
4891 * variables in the same section as the code, which is unacceptable
4892 * for RadeonSI as it needs to relocate all the data sections after
4893 * the code sections. See https://reviews.llvm.org/D65813.
4895 unsigned address_space
=
4896 LLVM_VERSION_MAJOR
< 10 ? AC_ADDR_SPACE_GLOBAL
: AC_ADDR_SPACE_CONST
;
4898 LLVMValueRef global
=
4899 LLVMAddGlobalInAddressSpace(ctx
->ac
.module
, type
,
4903 LLVMSetInitializer(global
, data
);
4904 LLVMSetGlobalConstant(global
, true);
4905 LLVMSetVisibility(global
, LLVMHiddenVisibility
);
4906 ctx
->constant_data
= global
;
4910 setup_shared(struct ac_nir_context
*ctx
,
4911 struct nir_shader
*nir
)
4916 LLVMTypeRef type
= LLVMArrayType(ctx
->ac
.i8
,
4917 nir
->info
.cs
.shared_size
);
4920 LLVMAddGlobalInAddressSpace(ctx
->ac
.module
, type
,
4923 LLVMSetAlignment(lds
, 64 * 1024);
4925 ctx
->ac
.lds
= LLVMBuildBitCast(ctx
->ac
.builder
, lds
,
4926 LLVMPointerType(ctx
->ac
.i8
,
4927 AC_ADDR_SPACE_LDS
), "");
4930 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
4931 const struct ac_shader_args
*args
, struct nir_shader
*nir
)
4933 struct ac_nir_context ctx
= {};
4934 struct nir_function
*func
;
4940 ctx
.stage
= nir
->info
.stage
;
4941 ctx
.info
= &nir
->info
;
4943 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
4945 nir_foreach_variable(variable
, &nir
->outputs
)
4946 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
4949 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4950 _mesa_key_pointer_equal
);
4951 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4952 _mesa_key_pointer_equal
);
4953 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
4954 _mesa_key_pointer_equal
);
4956 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
4958 nir_index_ssa_defs(func
->impl
);
4959 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
4961 setup_locals(&ctx
, func
);
4962 setup_scratch(&ctx
, nir
);
4963 setup_constant_data(&ctx
, nir
);
4965 if (gl_shader_stage_is_compute(nir
->info
.stage
))
4966 setup_shared(&ctx
, nir
);
4968 if (nir
->info
.stage
== MESA_SHADER_FRAGMENT
&& nir
->info
.fs
.uses_demote
) {
4969 ctx
.ac
.postponed_kill
= ac_build_alloca_undef(&ctx
.ac
, ac
->i1
, "");
4970 /* true = don't kill. */
4971 LLVMBuildStore(ctx
.ac
.builder
, ctx
.ac
.i1true
, ctx
.ac
.postponed_kill
);
4974 visit_cf_list(&ctx
, &func
->impl
->body
);
4975 phi_post_pass(&ctx
);
4977 if (ctx
.ac
.postponed_kill
)
4978 ac_build_kill_if_false(&ctx
.ac
, LLVMBuildLoad(ctx
.ac
.builder
,
4979 ctx
.ac
.postponed_kill
, ""));
4981 if (!gl_shader_stage_is_compute(nir
->info
.stage
))
4982 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
4987 ralloc_free(ctx
.defs
);
4988 ralloc_free(ctx
.phis
);
4989 ralloc_free(ctx
.vars
);
4993 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
4995 bool progress
= false;
4997 /* Lower large variables to scratch first so that we won't bloat the
4998 * shader by generating large if ladders for them. We later lower
4999 * scratch to alloca's, assuming LLVM won't generate VGPR indexing.
5001 NIR_PASS(progress
, nir
, nir_lower_vars_to_scratch
,
5002 nir_var_function_temp
,
5004 glsl_get_natural_size_align_bytes
);
5006 /* While it would be nice not to have this flag, we are constrained
5007 * by the reality that LLVM 9.0 has buggy VGPR indexing on GFX9.
5009 bool llvm_has_working_vgpr_indexing
= chip_class
!= GFX9
;
5011 /* TODO: Indirect indexing of GS inputs is unimplemented.
5013 * TCS and TES load inputs directly from LDS or offchip memory, so
5014 * indirect indexing is trivial.
5016 nir_variable_mode indirect_mask
= 0;
5017 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
5018 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
5019 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
5020 !llvm_has_working_vgpr_indexing
)) {
5021 indirect_mask
|= nir_var_shader_in
;
5023 if (!llvm_has_working_vgpr_indexing
&&
5024 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
5025 indirect_mask
|= nir_var_shader_out
;
5027 /* TODO: We shouldn't need to do this, however LLVM isn't currently
5028 * smart enough to handle indirects without causing excess spilling
5029 * causing the gpu to hang.
5031 * See the following thread for more details of the problem:
5032 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
5034 indirect_mask
|= nir_var_function_temp
;
5036 progress
|= nir_lower_indirect_derefs(nir
, indirect_mask
);
5041 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
5043 if (intrin
->intrinsic
!= nir_intrinsic_store_deref
)
5047 nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[0]));
5049 if (var
->data
.mode
!= nir_var_shader_out
)
5052 unsigned writemask
= 0;
5053 const int location
= var
->data
.location
;
5054 unsigned first_component
= var
->data
.location_frac
;
5055 unsigned num_comps
= intrin
->dest
.ssa
.num_components
;
5057 if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
5058 writemask
= ((1 << (num_comps
+ 1)) - 1) << first_component
;
5059 else if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
5060 writemask
= (((1 << (num_comps
+ 1)) - 1) << first_component
) << 4;
5066 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
5067 unsigned *cond_block_tf_writemask
,
5068 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
5070 switch (cf_node
->type
) {
5071 case nir_cf_node_block
: {
5072 nir_block
*block
= nir_cf_node_as_block(cf_node
);
5073 nir_foreach_instr(instr
, block
) {
5074 if (instr
->type
!= nir_instr_type_intrinsic
)
5077 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
5078 if (intrin
->intrinsic
== nir_intrinsic_control_barrier
) {
5080 /* If we find a barrier in nested control flow put this in the
5081 * too hard basket. In GLSL this is not possible but it is in
5085 *tessfactors_are_def_in_all_invocs
= false;
5089 /* The following case must be prevented:
5090 * gl_TessLevelInner = ...;
5092 * if (gl_InvocationID == 1)
5093 * gl_TessLevelInner = ...;
5095 * If you consider disjoint code segments separated by barriers, each
5096 * such segment that writes tess factor channels should write the same
5097 * channels in all codepaths within that segment.
5099 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
5100 /* Accumulate the result: */
5101 *tessfactors_are_def_in_all_invocs
&=
5102 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
5104 /* Analyze the next code segment from scratch. */
5105 *upper_block_tf_writemask
= 0;
5106 *cond_block_tf_writemask
= 0;
5109 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
5114 case nir_cf_node_if
: {
5115 unsigned then_tessfactor_writemask
= 0;
5116 unsigned else_tessfactor_writemask
= 0;
5118 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
5119 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
5120 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
5121 cond_block_tf_writemask
,
5122 tessfactors_are_def_in_all_invocs
, true);
5125 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
5126 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
5127 cond_block_tf_writemask
,
5128 tessfactors_are_def_in_all_invocs
, true);
5131 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
5132 /* If both statements write the same tess factor channels,
5133 * we can say that the upper block writes them too.
5135 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
5136 else_tessfactor_writemask
;
5137 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
5138 else_tessfactor_writemask
;
5143 case nir_cf_node_loop
: {
5144 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
5145 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
5146 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
5147 cond_block_tf_writemask
,
5148 tessfactors_are_def_in_all_invocs
, true);
5154 unreachable("unknown cf node type");
5159 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
5161 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
5163 /* The pass works as follows:
5164 * If all codepaths write tess factors, we can say that all
5165 * invocations define tess factors.
5167 * Each tess factor channel is tracked separately.
5169 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
5170 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
5172 /* Initial value = true. Here the pass will accumulate results from
5173 * multiple segments surrounded by barriers. If tess factors aren't
5174 * written at all, it's a shader bug and we don't care if this will be
5177 bool tessfactors_are_def_in_all_invocs
= true;
5179 nir_foreach_function(function
, nir
) {
5180 if (function
->impl
) {
5181 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
5182 scan_tess_ctrl(node
, &main_block_tf_writemask
,
5183 &cond_block_tf_writemask
,
5184 &tessfactors_are_def_in_all_invocs
,
5190 /* Accumulate the result for the last code segment separated by a
5193 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
5194 tessfactors_are_def_in_all_invocs
&=
5195 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
5198 return tessfactors_are_def_in_all_invocs
;