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_index(struct ac_nir_context
*ctx
,
64 nir_deref_instr
*deref_instr
,
65 const nir_instr
*instr
,
68 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
69 nir_deref_instr
*deref_instr
,
70 enum ac_descriptor_type desc_type
,
71 const nir_instr
*instr
,
73 bool image
, bool write
);
76 build_store_values_extended(struct ac_llvm_context
*ac
,
79 unsigned value_stride
,
82 LLVMBuilderRef builder
= ac
->builder
;
85 for (i
= 0; i
< value_count
; i
++) {
86 LLVMValueRef ptr
= values
[i
* value_stride
];
87 LLVMValueRef index
= LLVMConstInt(ac
->i32
, i
, false);
88 LLVMValueRef value
= LLVMBuildExtractElement(builder
, vec
, index
, "");
89 LLVMBuildStore(builder
, value
, ptr
);
93 static LLVMTypeRef
get_def_type(struct ac_nir_context
*ctx
,
94 const nir_ssa_def
*def
)
96 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, def
->bit_size
);
97 if (def
->num_components
> 1) {
98 type
= LLVMVectorType(type
, def
->num_components
);
103 static LLVMValueRef
get_src(struct ac_nir_context
*nir
, nir_src src
)
106 return nir
->ssa_defs
[src
.ssa
->index
];
110 get_memory_ptr(struct ac_nir_context
*ctx
, nir_src src
, unsigned bit_size
)
112 LLVMValueRef ptr
= get_src(ctx
, src
);
113 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ctx
->ac
.lds
, &ptr
, 1, "");
114 int addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
116 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, bit_size
);
118 return LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
119 LLVMPointerType(type
, addr_space
), "");
122 static LLVMBasicBlockRef
get_block(struct ac_nir_context
*nir
,
123 const struct nir_block
*b
)
125 struct hash_entry
*entry
= _mesa_hash_table_search(nir
->defs
, b
);
126 return (LLVMBasicBlockRef
)entry
->data
;
129 static LLVMValueRef
get_alu_src(struct ac_nir_context
*ctx
,
131 unsigned num_components
)
133 LLVMValueRef value
= get_src(ctx
, src
.src
);
134 bool need_swizzle
= false;
137 unsigned src_components
= ac_get_llvm_num_components(value
);
138 for (unsigned i
= 0; i
< num_components
; ++i
) {
139 assert(src
.swizzle
[i
] < src_components
);
140 if (src
.swizzle
[i
] != i
)
144 if (need_swizzle
|| num_components
!= src_components
) {
145 LLVMValueRef masks
[] = {
146 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[0], false),
147 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[1], false),
148 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[2], false),
149 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[3], false)};
151 if (src_components
> 1 && num_components
== 1) {
152 value
= LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
154 } else if (src_components
== 1 && num_components
> 1) {
155 LLVMValueRef values
[] = {value
, value
, value
, value
};
156 value
= ac_build_gather_values(&ctx
->ac
, values
, num_components
);
158 LLVMValueRef swizzle
= LLVMConstVector(masks
, num_components
);
159 value
= LLVMBuildShuffleVector(ctx
->ac
.builder
, value
, value
,
168 static LLVMValueRef
emit_int_cmp(struct ac_llvm_context
*ctx
,
169 LLVMIntPredicate pred
, LLVMValueRef src0
,
172 LLVMValueRef result
= LLVMBuildICmp(ctx
->builder
, pred
, src0
, src1
, "");
173 return LLVMBuildSelect(ctx
->builder
, result
,
174 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
178 static LLVMValueRef
emit_float_cmp(struct ac_llvm_context
*ctx
,
179 LLVMRealPredicate pred
, LLVMValueRef src0
,
183 src0
= ac_to_float(ctx
, src0
);
184 src1
= ac_to_float(ctx
, src1
);
185 result
= LLVMBuildFCmp(ctx
->builder
, pred
, src0
, src1
, "");
186 return LLVMBuildSelect(ctx
->builder
, result
,
187 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
191 static LLVMValueRef
emit_intrin_1f_param(struct ac_llvm_context
*ctx
,
193 LLVMTypeRef result_type
,
197 LLVMValueRef params
[] = {
198 ac_to_float(ctx
, src0
),
201 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
202 ac_get_elem_bits(ctx
, result_type
));
203 assert(length
< sizeof(name
));
204 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 1, AC_FUNC_ATTR_READNONE
);
207 static LLVMValueRef
emit_intrin_2f_param(struct ac_llvm_context
*ctx
,
209 LLVMTypeRef result_type
,
210 LLVMValueRef src0
, LLVMValueRef src1
)
213 LLVMValueRef params
[] = {
214 ac_to_float(ctx
, src0
),
215 ac_to_float(ctx
, src1
),
218 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
219 ac_get_elem_bits(ctx
, result_type
));
220 assert(length
< sizeof(name
));
221 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 2, AC_FUNC_ATTR_READNONE
);
224 static LLVMValueRef
emit_intrin_3f_param(struct ac_llvm_context
*ctx
,
226 LLVMTypeRef result_type
,
227 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
230 LLVMValueRef params
[] = {
231 ac_to_float(ctx
, src0
),
232 ac_to_float(ctx
, src1
),
233 ac_to_float(ctx
, src2
),
236 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.f%d", intrin
,
237 ac_get_elem_bits(ctx
, result_type
));
238 assert(length
< sizeof(name
));
239 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 3, AC_FUNC_ATTR_READNONE
);
242 static LLVMValueRef
emit_bcsel(struct ac_llvm_context
*ctx
,
243 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
245 LLVMTypeRef src1_type
= LLVMTypeOf(src1
);
246 LLVMTypeRef src2_type
= LLVMTypeOf(src2
);
248 assert(LLVMGetTypeKind(LLVMTypeOf(src0
)) != LLVMVectorTypeKind
);
250 if (LLVMGetTypeKind(src1_type
) == LLVMPointerTypeKind
&&
251 LLVMGetTypeKind(src2_type
) != LLVMPointerTypeKind
) {
252 src2
= LLVMBuildIntToPtr(ctx
->builder
, src2
, src1_type
, "");
253 } else if (LLVMGetTypeKind(src2_type
) == LLVMPointerTypeKind
&&
254 LLVMGetTypeKind(src1_type
) != LLVMPointerTypeKind
) {
255 src1
= LLVMBuildIntToPtr(ctx
->builder
, src1
, src2_type
, "");
258 LLVMValueRef v
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
,
260 return LLVMBuildSelect(ctx
->builder
, v
,
261 ac_to_integer_or_pointer(ctx
, src1
),
262 ac_to_integer_or_pointer(ctx
, src2
), "");
265 static LLVMValueRef
emit_iabs(struct ac_llvm_context
*ctx
,
268 return ac_build_imax(ctx
, src0
, LLVMBuildNeg(ctx
->builder
, src0
, ""));
271 static LLVMValueRef
emit_uint_carry(struct ac_llvm_context
*ctx
,
273 LLVMValueRef src0
, LLVMValueRef src1
)
275 LLVMTypeRef ret_type
;
276 LLVMTypeRef types
[] = { ctx
->i32
, ctx
->i1
};
278 LLVMValueRef params
[] = { src0
, src1
};
279 ret_type
= LLVMStructTypeInContext(ctx
->context
, types
,
282 res
= ac_build_intrinsic(ctx
, intrin
, ret_type
,
283 params
, 2, AC_FUNC_ATTR_READNONE
);
285 res
= LLVMBuildExtractValue(ctx
->builder
, res
, 1, "");
286 res
= LLVMBuildZExt(ctx
->builder
, res
, ctx
->i32
, "");
290 static LLVMValueRef
emit_b2f(struct ac_llvm_context
*ctx
,
294 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
,
295 LLVMBuildBitCast(ctx
->builder
, LLVMConstReal(ctx
->f32
, 1.0), ctx
->i32
, ""),
297 result
= LLVMBuildBitCast(ctx
->builder
, result
, ctx
->f32
, "");
301 return LLVMBuildFPTrunc(ctx
->builder
, result
, ctx
->f16
, "");
305 return LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f64
, "");
307 unreachable("Unsupported bit size.");
311 static LLVMValueRef
emit_f2b(struct ac_llvm_context
*ctx
,
314 src0
= ac_to_float(ctx
, src0
);
315 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
316 return LLVMBuildSExt(ctx
->builder
,
317 LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
, src0
, zero
, ""),
321 static LLVMValueRef
emit_b2i(struct ac_llvm_context
*ctx
,
325 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
, ctx
->i32_1
, "");
329 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i8
, "");
331 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i16
, "");
335 return LLVMBuildZExt(ctx
->builder
, result
, ctx
->i64
, "");
337 unreachable("Unsupported bit size.");
341 static LLVMValueRef
emit_i2b(struct ac_llvm_context
*ctx
,
344 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
345 return LLVMBuildSExt(ctx
->builder
,
346 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
, zero
, ""),
350 static LLVMValueRef
emit_f2f16(struct ac_llvm_context
*ctx
,
354 LLVMValueRef cond
= NULL
;
356 src0
= ac_to_float(ctx
, src0
);
357 result
= LLVMBuildFPTrunc(ctx
->builder
, src0
, ctx
->f16
, "");
359 if (ctx
->chip_class
>= GFX8
) {
360 LLVMValueRef args
[2];
361 /* Check if the result is a denormal - and flush to 0 if so. */
363 args
[1] = LLVMConstInt(ctx
->i32
, N_SUBNORMAL
| P_SUBNORMAL
, false);
364 cond
= ac_build_intrinsic(ctx
, "llvm.amdgcn.class.f16", ctx
->i1
, args
, 2, AC_FUNC_ATTR_READNONE
);
367 /* need to convert back up to f32 */
368 result
= LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f32
, "");
370 if (ctx
->chip_class
>= GFX8
)
371 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
374 /* 0x38800000 is smallest half float value (2^-14) in 32-bit float,
375 * so compare the result and flush to 0 if it's smaller.
377 LLVMValueRef temp
, cond2
;
378 temp
= emit_intrin_1f_param(ctx
, "llvm.fabs", ctx
->f32
, result
);
379 cond
= LLVMBuildFCmp(ctx
->builder
, LLVMRealOGT
,
380 LLVMBuildBitCast(ctx
->builder
, LLVMConstInt(ctx
->i32
, 0x38800000, false), ctx
->f32
, ""),
382 cond2
= LLVMBuildFCmp(ctx
->builder
, LLVMRealONE
,
383 temp
, ctx
->f32_0
, "");
384 cond
= LLVMBuildAnd(ctx
->builder
, cond
, cond2
, "");
385 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
390 static LLVMValueRef
emit_umul_high(struct ac_llvm_context
*ctx
,
391 LLVMValueRef src0
, LLVMValueRef src1
)
393 LLVMValueRef dst64
, result
;
394 src0
= LLVMBuildZExt(ctx
->builder
, src0
, ctx
->i64
, "");
395 src1
= LLVMBuildZExt(ctx
->builder
, src1
, ctx
->i64
, "");
397 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
398 dst64
= LLVMBuildLShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
399 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
403 static LLVMValueRef
emit_imul_high(struct ac_llvm_context
*ctx
,
404 LLVMValueRef src0
, LLVMValueRef src1
)
406 LLVMValueRef dst64
, result
;
407 src0
= LLVMBuildSExt(ctx
->builder
, src0
, ctx
->i64
, "");
408 src1
= LLVMBuildSExt(ctx
->builder
, src1
, ctx
->i64
, "");
410 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
411 dst64
= LLVMBuildAShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
412 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
416 static LLVMValueRef
emit_bfm(struct ac_llvm_context
*ctx
,
417 LLVMValueRef bits
, LLVMValueRef offset
)
419 /* mask = ((1 << bits) - 1) << offset */
420 return LLVMBuildShl(ctx
->builder
,
421 LLVMBuildSub(ctx
->builder
,
422 LLVMBuildShl(ctx
->builder
,
429 static LLVMValueRef
emit_bitfield_select(struct ac_llvm_context
*ctx
,
430 LLVMValueRef mask
, LLVMValueRef insert
,
434 * (mask & insert) | (~mask & base) = base ^ (mask & (insert ^ base))
435 * Use the right-hand side, which the LLVM backend can convert to V_BFI.
437 return LLVMBuildXor(ctx
->builder
, base
,
438 LLVMBuildAnd(ctx
->builder
, mask
,
439 LLVMBuildXor(ctx
->builder
, insert
, base
, ""), ""), "");
442 static LLVMValueRef
emit_pack_2x16(struct ac_llvm_context
*ctx
,
444 LLVMValueRef (*pack
)(struct ac_llvm_context
*ctx
,
445 LLVMValueRef args
[2]))
447 LLVMValueRef comp
[2];
449 src0
= ac_to_float(ctx
, src0
);
450 comp
[0] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_0
, "");
451 comp
[1] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_1
, "");
453 return LLVMBuildBitCast(ctx
->builder
, pack(ctx
, comp
), ctx
->i32
, "");
456 static LLVMValueRef
emit_unpack_half_2x16(struct ac_llvm_context
*ctx
,
459 LLVMValueRef const16
= LLVMConstInt(ctx
->i32
, 16, false);
460 LLVMValueRef temps
[2], val
;
463 for (i
= 0; i
< 2; i
++) {
464 val
= i
== 1 ? LLVMBuildLShr(ctx
->builder
, src0
, const16
, "") : src0
;
465 val
= LLVMBuildTrunc(ctx
->builder
, val
, ctx
->i16
, "");
466 val
= LLVMBuildBitCast(ctx
->builder
, val
, ctx
->f16
, "");
467 temps
[i
] = LLVMBuildFPExt(ctx
->builder
, val
, ctx
->f32
, "");
469 return ac_build_gather_values(ctx
, temps
, 2);
472 static LLVMValueRef
emit_ddxy(struct ac_nir_context
*ctx
,
480 if (op
== nir_op_fddx_fine
)
481 mask
= AC_TID_MASK_LEFT
;
482 else if (op
== nir_op_fddy_fine
)
483 mask
= AC_TID_MASK_TOP
;
485 mask
= AC_TID_MASK_TOP_LEFT
;
487 /* for DDX we want to next X pixel, DDY next Y pixel. */
488 if (op
== nir_op_fddx_fine
||
489 op
== nir_op_fddx_coarse
||
495 result
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, src0
);
499 struct waterfall_context
{
500 LLVMBasicBlockRef phi_bb
[2];
504 /* To deal with divergent descriptors we can create a loop that handles all
505 * lanes with the same descriptor on a given iteration (henceforth a
508 * These helper create the begin and end of the loop leaving the caller
509 * to implement the body.
512 * - ctx is the usal nir context
513 * - wctx is a temporary struct containing some loop info. Can be left uninitialized.
514 * - value is the possibly divergent value for which we built the loop
515 * - divergent is whether value is actually divergent. If false we just pass
518 static LLVMValueRef
enter_waterfall(struct ac_nir_context
*ctx
,
519 struct waterfall_context
*wctx
,
520 LLVMValueRef value
, bool divergent
)
522 /* If the app claims the value is divergent but it is constant we can
523 * end up with a dynamic index of NULL. */
527 wctx
->use_waterfall
= divergent
;
531 ac_build_bgnloop(&ctx
->ac
, 6000);
533 LLVMValueRef scalar_value
= ac_build_readlane(&ctx
->ac
, value
, NULL
);
535 LLVMValueRef active
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, value
,
536 scalar_value
, "uniform_active");
538 wctx
->phi_bb
[0] = LLVMGetInsertBlock(ctx
->ac
.builder
);
539 ac_build_ifcc(&ctx
->ac
, active
, 6001);
544 static LLVMValueRef
exit_waterfall(struct ac_nir_context
*ctx
,
545 struct waterfall_context
*wctx
,
548 LLVMValueRef ret
= NULL
;
549 LLVMValueRef phi_src
[2];
550 LLVMValueRef cc_phi_src
[2] = {
551 LLVMConstInt(ctx
->ac
.i32
, 0, false),
552 LLVMConstInt(ctx
->ac
.i32
, 0xffffffff, false),
555 if (!wctx
->use_waterfall
)
558 wctx
->phi_bb
[1] = LLVMGetInsertBlock(ctx
->ac
.builder
);
560 ac_build_endif(&ctx
->ac
, 6001);
563 phi_src
[0] = LLVMGetUndef(LLVMTypeOf(value
));
566 ret
= ac_build_phi(&ctx
->ac
, LLVMTypeOf(value
), 2, phi_src
, wctx
->phi_bb
);
570 * By using the optimization barrier on the exit decision, we decouple
571 * the operations from the break, and hence avoid LLVM hoisting the
572 * opteration into the break block.
574 LLVMValueRef cc
= ac_build_phi(&ctx
->ac
, ctx
->ac
.i32
, 2, cc_phi_src
, wctx
->phi_bb
);
575 ac_build_optimization_barrier(&ctx
->ac
, &cc
);
577 LLVMValueRef active
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntNE
, cc
, ctx
->ac
.i32_0
, "uniform_active2");
578 ac_build_ifcc(&ctx
->ac
, active
, 6002);
579 ac_build_break(&ctx
->ac
);
580 ac_build_endif(&ctx
->ac
, 6002);
582 ac_build_endloop(&ctx
->ac
, 6000);
586 static void visit_alu(struct ac_nir_context
*ctx
, const nir_alu_instr
*instr
)
588 LLVMValueRef src
[4], result
= NULL
;
589 unsigned num_components
= instr
->dest
.dest
.ssa
.num_components
;
590 unsigned src_components
;
591 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.dest
.ssa
);
593 assert(nir_op_infos
[instr
->op
].num_inputs
<= ARRAY_SIZE(src
));
600 case nir_op_pack_half_2x16
:
601 case nir_op_pack_snorm_2x16
:
602 case nir_op_pack_unorm_2x16
:
605 case nir_op_unpack_half_2x16
:
608 case nir_op_cube_face_coord
:
609 case nir_op_cube_face_index
:
613 src_components
= num_components
;
616 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
617 src
[i
] = get_alu_src(ctx
, instr
->src
[i
], src_components
);
624 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
625 result
= LLVMBuildFNeg(ctx
->ac
.builder
, src
[0], "");
626 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO
) {
627 /* fneg will be optimized by backend compiler with sign
628 * bit removed via XOR. This is probably a LLVM bug.
630 result
= ac_build_canonicalize(&ctx
->ac
, result
,
631 instr
->dest
.dest
.ssa
.bit_size
);
635 result
= LLVMBuildNeg(ctx
->ac
.builder
, src
[0], "");
638 result
= LLVMBuildNot(ctx
->ac
.builder
, src
[0], "");
641 result
= LLVMBuildAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
644 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
645 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
646 result
= LLVMBuildFAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
649 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
650 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
651 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], src
[1], "");
654 result
= LLVMBuildSub(ctx
->ac
.builder
, src
[0], src
[1], "");
657 result
= LLVMBuildMul(ctx
->ac
.builder
, src
[0], src
[1], "");
660 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
663 result
= LLVMBuildURem(ctx
->ac
.builder
, src
[0], src
[1], "");
666 /* lower_fmod only lower 16-bit and 32-bit fmod */
667 assert(instr
->dest
.dest
.ssa
.bit_size
== 64);
668 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
669 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
670 result
= ac_build_fdiv(&ctx
->ac
, src
[0], src
[1]);
671 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
672 ac_to_float_type(&ctx
->ac
, def_type
), result
);
673 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[1] , result
, "");
674 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], result
, "");
677 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
680 result
= LLVMBuildSDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
683 result
= LLVMBuildUDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
686 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
687 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
688 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[0], src
[1], "");
691 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.amdgcn.rcp",
692 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
695 result
= LLVMBuildAnd(ctx
->ac
.builder
, src
[0], src
[1], "");
698 result
= LLVMBuildOr(ctx
->ac
.builder
, src
[0], src
[1], "");
701 result
= LLVMBuildXor(ctx
->ac
.builder
, src
[0], src
[1], "");
704 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
705 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
706 LLVMTypeOf(src
[0]), "");
707 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
708 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
709 LLVMTypeOf(src
[0]), "");
710 result
= LLVMBuildShl(ctx
->ac
.builder
, src
[0], src
[1], "");
713 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
714 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
715 LLVMTypeOf(src
[0]), "");
716 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
717 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
718 LLVMTypeOf(src
[0]), "");
719 result
= LLVMBuildAShr(ctx
->ac
.builder
, src
[0], src
[1], "");
722 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
723 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
724 LLVMTypeOf(src
[0]), "");
725 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
726 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
727 LLVMTypeOf(src
[0]), "");
728 result
= LLVMBuildLShr(ctx
->ac
.builder
, src
[0], src
[1], "");
731 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
734 result
= emit_int_cmp(&ctx
->ac
, LLVMIntNE
, src
[0], src
[1]);
737 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, src
[0], src
[1]);
740 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSGE
, src
[0], src
[1]);
743 result
= emit_int_cmp(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
746 result
= emit_int_cmp(&ctx
->ac
, LLVMIntUGE
, src
[0], src
[1]);
749 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOEQ
, src
[0], src
[1]);
752 result
= emit_float_cmp(&ctx
->ac
, LLVMRealUNE
, src
[0], src
[1]);
755 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOLT
, src
[0], src
[1]);
758 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOGE
, src
[0], src
[1]);
761 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.fabs",
762 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
763 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO
) {
764 /* fabs will be optimized by backend compiler with sign
765 * bit removed via AND.
767 result
= ac_build_canonicalize(&ctx
->ac
, result
,
768 instr
->dest
.dest
.ssa
.bit_size
);
772 result
= emit_iabs(&ctx
->ac
, src
[0]);
775 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
778 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
781 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
784 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
787 result
= ac_build_isign(&ctx
->ac
, src
[0],
788 instr
->dest
.dest
.ssa
.bit_size
);
791 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
792 result
= ac_build_fsign(&ctx
->ac
, src
[0],
793 instr
->dest
.dest
.ssa
.bit_size
);
796 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
797 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
800 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.trunc",
801 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
804 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.ceil",
805 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
807 case nir_op_fround_even
:
808 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.rint",
809 ac_to_float_type(&ctx
->ac
, def_type
),src
[0]);
812 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
813 result
= ac_build_fract(&ctx
->ac
, src
[0],
814 instr
->dest
.dest
.ssa
.bit_size
);
817 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sin",
818 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
821 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.cos",
822 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
825 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
826 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
829 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.exp2",
830 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
833 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.log2",
834 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
837 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.amdgcn.rsq",
838 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
840 case nir_op_frexp_exp
:
841 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
842 result
= ac_build_frexp_exp(&ctx
->ac
, src
[0],
843 ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])));
844 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) == 16)
845 result
= LLVMBuildSExt(ctx
->ac
.builder
, result
,
848 case nir_op_frexp_sig
:
849 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
850 result
= ac_build_frexp_mant(&ctx
->ac
, src
[0],
851 instr
->dest
.dest
.ssa
.bit_size
);
854 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.pow",
855 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
858 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
859 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
860 if (ctx
->ac
.chip_class
< GFX9
&&
861 instr
->dest
.dest
.ssa
.bit_size
== 32) {
862 /* Only pre-GFX9 chips do not flush denorms. */
863 result
= ac_build_canonicalize(&ctx
->ac
, result
,
864 instr
->dest
.dest
.ssa
.bit_size
);
868 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
869 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
870 if (ctx
->ac
.chip_class
< GFX9
&&
871 instr
->dest
.dest
.ssa
.bit_size
== 32) {
872 /* Only pre-GFX9 chips do not flush denorms. */
873 result
= ac_build_canonicalize(&ctx
->ac
, result
,
874 instr
->dest
.dest
.ssa
.bit_size
);
878 /* FMA is better on GFX10, because it has FMA units instead of MUL-ADD units. */
879 result
= emit_intrin_3f_param(&ctx
->ac
, ctx
->ac
.chip_class
>= GFX10
? "llvm.fma" : "llvm.fmuladd",
880 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1], src
[2]);
883 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
884 if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 32)
885 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f32", ctx
->ac
.f32
, src
, 2, AC_FUNC_ATTR_READNONE
);
886 else if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 16)
887 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f16", ctx
->ac
.f16
, src
, 2, AC_FUNC_ATTR_READNONE
);
889 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f64", ctx
->ac
.f64
, src
, 2, AC_FUNC_ATTR_READNONE
);
892 result
= emit_bfm(&ctx
->ac
, src
[0], src
[1]);
894 case nir_op_bitfield_select
:
895 result
= emit_bitfield_select(&ctx
->ac
, src
[0], src
[1], src
[2]);
898 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], false);
901 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], true);
903 case nir_op_bitfield_reverse
:
904 result
= ac_build_bitfield_reverse(&ctx
->ac
, src
[0]);
906 case nir_op_bit_count
:
907 result
= ac_build_bit_count(&ctx
->ac
, src
[0]);
912 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
913 src
[i
] = ac_to_integer(&ctx
->ac
, src
[i
]);
914 result
= ac_build_gather_values(&ctx
->ac
, src
, num_components
);
920 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
921 result
= LLVMBuildFPToSI(ctx
->ac
.builder
, src
[0], def_type
, "");
927 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
928 result
= LLVMBuildFPToUI(ctx
->ac
.builder
, src
[0], def_type
, "");
933 result
= LLVMBuildSIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
938 result
= LLVMBuildUIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
940 case nir_op_f2f16_rtz
:
941 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
942 if (LLVMTypeOf(src
[0]) == ctx
->ac
.f64
)
943 src
[0] = LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ctx
->ac
.f32
, "");
944 LLVMValueRef param
[2] = { src
[0], ctx
->ac
.f32_0
};
945 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, param
);
946 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
948 case nir_op_f2f16_rtne
:
952 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
953 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
954 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
956 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
962 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
963 result
= LLVMBuildZExt(ctx
->ac
.builder
, src
[0], def_type
, "");
965 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
971 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
972 result
= LLVMBuildSExt(ctx
->ac
.builder
, src
[0], def_type
, "");
974 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
977 result
= emit_bcsel(&ctx
->ac
, src
[0], src
[1], src
[2]);
979 case nir_op_find_lsb
:
980 result
= ac_find_lsb(&ctx
->ac
, ctx
->ac
.i32
, src
[0]);
982 case nir_op_ufind_msb
:
983 result
= ac_build_umsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
985 case nir_op_ifind_msb
:
986 result
= ac_build_imsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
988 case nir_op_uadd_carry
:
989 result
= emit_uint_carry(&ctx
->ac
, "llvm.uadd.with.overflow.i32", src
[0], src
[1]);
991 case nir_op_usub_borrow
:
992 result
= emit_uint_carry(&ctx
->ac
, "llvm.usub.with.overflow.i32", src
[0], src
[1]);
997 result
= emit_b2f(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
1000 result
= emit_f2b(&ctx
->ac
, src
[0]);
1006 result
= emit_b2i(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
1009 result
= emit_i2b(&ctx
->ac
, src
[0]);
1011 case nir_op_fquantize2f16
:
1012 result
= emit_f2f16(&ctx
->ac
, src
[0]);
1014 case nir_op_umul_high
:
1015 result
= emit_umul_high(&ctx
->ac
, src
[0], src
[1]);
1017 case nir_op_imul_high
:
1018 result
= emit_imul_high(&ctx
->ac
, src
[0], src
[1]);
1020 case nir_op_pack_half_2x16
:
1021 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pkrtz_f16
);
1023 case nir_op_pack_snorm_2x16
:
1024 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_i16
);
1026 case nir_op_pack_unorm_2x16
:
1027 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_u16
);
1029 case nir_op_unpack_half_2x16
:
1030 result
= emit_unpack_half_2x16(&ctx
->ac
, src
[0]);
1034 case nir_op_fddx_fine
:
1035 case nir_op_fddy_fine
:
1036 case nir_op_fddx_coarse
:
1037 case nir_op_fddy_coarse
:
1038 result
= emit_ddxy(ctx
, instr
->op
, src
[0]);
1041 case nir_op_unpack_64_2x32_split_x
: {
1042 assert(ac_get_llvm_num_components(src
[0]) == 1);
1043 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1046 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1051 case nir_op_unpack_64_2x32_split_y
: {
1052 assert(ac_get_llvm_num_components(src
[0]) == 1);
1053 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1056 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1061 case nir_op_pack_64_2x32_split
: {
1062 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
1063 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i64
, "");
1067 case nir_op_pack_32_2x16_split
: {
1068 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
1069 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
1073 case nir_op_unpack_32_2x16_split_x
: {
1074 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1077 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1082 case nir_op_unpack_32_2x16_split_y
: {
1083 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1086 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1091 case nir_op_cube_face_coord
: {
1092 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1093 LLVMValueRef results
[2];
1095 for (unsigned chan
= 0; chan
< 3; chan
++)
1096 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1097 results
[0] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubesc",
1098 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1099 results
[1] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubetc",
1100 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1101 LLVMValueRef ma
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubema",
1102 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1103 results
[0] = ac_build_fdiv(&ctx
->ac
, results
[0], ma
);
1104 results
[1] = ac_build_fdiv(&ctx
->ac
, results
[1], ma
);
1105 LLVMValueRef offset
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
1106 results
[0] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[0], offset
, "");
1107 results
[1] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[1], offset
, "");
1108 result
= ac_build_gather_values(&ctx
->ac
, results
, 2);
1112 case nir_op_cube_face_index
: {
1113 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1115 for (unsigned chan
= 0; chan
< 3; chan
++)
1116 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1117 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubeid",
1118 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1123 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1124 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1125 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1126 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1129 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1130 result
= ac_build_umin(&ctx
->ac
, result
, src
[2]);
1133 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1134 result
= ac_build_imin(&ctx
->ac
, result
, src
[2]);
1137 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1138 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1139 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1140 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1143 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1144 result
= ac_build_umax(&ctx
->ac
, result
, src
[2]);
1147 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1148 result
= ac_build_imax(&ctx
->ac
, result
, src
[2]);
1150 case nir_op_fmed3
: {
1151 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1152 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
1153 src
[2] = ac_to_float(&ctx
->ac
, src
[2]);
1154 result
= ac_build_fmed3(&ctx
->ac
, src
[0], src
[1], src
[2],
1155 instr
->dest
.dest
.ssa
.bit_size
);
1158 case nir_op_imed3
: {
1159 LLVMValueRef tmp1
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1160 LLVMValueRef tmp2
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1161 tmp2
= ac_build_imin(&ctx
->ac
, tmp2
, src
[2]);
1162 result
= ac_build_imax(&ctx
->ac
, tmp1
, tmp2
);
1165 case nir_op_umed3
: {
1166 LLVMValueRef tmp1
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1167 LLVMValueRef tmp2
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1168 tmp2
= ac_build_umin(&ctx
->ac
, tmp2
, src
[2]);
1169 result
= ac_build_umax(&ctx
->ac
, tmp1
, tmp2
);
1174 fprintf(stderr
, "Unknown NIR alu instr: ");
1175 nir_print_instr(&instr
->instr
, stderr
);
1176 fprintf(stderr
, "\n");
1181 assert(instr
->dest
.dest
.is_ssa
);
1182 result
= ac_to_integer_or_pointer(&ctx
->ac
, result
);
1183 ctx
->ssa_defs
[instr
->dest
.dest
.ssa
.index
] = result
;
1187 static void visit_load_const(struct ac_nir_context
*ctx
,
1188 const nir_load_const_instr
*instr
)
1190 LLVMValueRef values
[4], value
= NULL
;
1191 LLVMTypeRef element_type
=
1192 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
1194 for (unsigned i
= 0; i
< instr
->def
.num_components
; ++i
) {
1195 switch (instr
->def
.bit_size
) {
1197 values
[i
] = LLVMConstInt(element_type
,
1198 instr
->value
[i
].u8
, false);
1201 values
[i
] = LLVMConstInt(element_type
,
1202 instr
->value
[i
].u16
, false);
1205 values
[i
] = LLVMConstInt(element_type
,
1206 instr
->value
[i
].u32
, false);
1209 values
[i
] = LLVMConstInt(element_type
,
1210 instr
->value
[i
].u64
, false);
1214 "unsupported nir load_const bit_size: %d\n",
1215 instr
->def
.bit_size
);
1219 if (instr
->def
.num_components
> 1) {
1220 value
= LLVMConstVector(values
, instr
->def
.num_components
);
1224 ctx
->ssa_defs
[instr
->def
.index
] = value
;
1228 get_buffer_size(struct ac_nir_context
*ctx
, LLVMValueRef descriptor
, bool in_elements
)
1231 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1232 LLVMConstInt(ctx
->ac
.i32
, 2, false), "");
1235 if (ctx
->ac
.chip_class
== GFX8
&& in_elements
) {
1236 /* On GFX8, the descriptor contains the size in bytes,
1237 * but TXQ must return the size in elements.
1238 * The stride is always non-zero for resources using TXQ.
1240 LLVMValueRef stride
=
1241 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1243 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
,
1244 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
1245 stride
= LLVMBuildAnd(ctx
->ac
.builder
, stride
,
1246 LLVMConstInt(ctx
->ac
.i32
, 0x3fff, false), "");
1248 size
= LLVMBuildUDiv(ctx
->ac
.builder
, size
, stride
, "");
1253 /* Gather4 should follow the same rules as bilinear filtering, but the hardware
1254 * incorrectly forces nearest filtering if the texture format is integer.
1255 * The only effect it has on Gather4, which always returns 4 texels for
1256 * bilinear filtering, is that the final coordinates are off by 0.5 of
1259 * The workaround is to subtract 0.5 from the unnormalized coordinates,
1260 * or (0.5 / size) from the normalized coordinates.
1262 * However, cube textures with 8_8_8_8 data formats require a different
1263 * workaround of overriding the num format to USCALED/SSCALED. This would lose
1264 * precision in 32-bit data formats, so it needs to be applied dynamically at
1265 * runtime. In this case, return an i1 value that indicates whether the
1266 * descriptor was overridden (and hence a fixup of the sampler result is needed).
1268 static LLVMValueRef
lower_gather4_integer(struct ac_llvm_context
*ctx
,
1270 struct ac_image_args
*args
,
1271 const nir_tex_instr
*instr
)
1273 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1274 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1275 LLVMValueRef wa_8888
= NULL
;
1276 LLVMValueRef half_texel
[2];
1277 LLVMValueRef result
;
1279 assert(stype
== GLSL_TYPE_INT
|| stype
== GLSL_TYPE_UINT
);
1281 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1282 LLVMValueRef formats
;
1283 LLVMValueRef data_format
;
1284 LLVMValueRef wa_formats
;
1286 formats
= LLVMBuildExtractElement(ctx
->builder
, args
->resource
, ctx
->i32_1
, "");
1288 data_format
= LLVMBuildLShr(ctx
->builder
, formats
,
1289 LLVMConstInt(ctx
->i32
, 20, false), "");
1290 data_format
= LLVMBuildAnd(ctx
->builder
, data_format
,
1291 LLVMConstInt(ctx
->i32
, (1u << 6) - 1, false), "");
1292 wa_8888
= LLVMBuildICmp(
1293 ctx
->builder
, LLVMIntEQ
, data_format
,
1294 LLVMConstInt(ctx
->i32
, V_008F14_IMG_DATA_FORMAT_8_8_8_8
, false),
1297 uint32_t wa_num_format
=
1298 stype
== GLSL_TYPE_UINT
?
1299 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_USCALED
) :
1300 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_SSCALED
);
1301 wa_formats
= LLVMBuildAnd(ctx
->builder
, formats
,
1302 LLVMConstInt(ctx
->i32
, C_008F14_NUM_FORMAT
, false),
1304 wa_formats
= LLVMBuildOr(ctx
->builder
, wa_formats
,
1305 LLVMConstInt(ctx
->i32
, wa_num_format
, false), "");
1307 formats
= LLVMBuildSelect(ctx
->builder
, wa_8888
, wa_formats
, formats
, "");
1308 args
->resource
= LLVMBuildInsertElement(
1309 ctx
->builder
, args
->resource
, formats
, ctx
->i32_1
, "");
1312 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
) {
1314 half_texel
[0] = half_texel
[1] = LLVMConstReal(ctx
->f32
, -0.5);
1316 struct ac_image_args resinfo
= {};
1317 LLVMBasicBlockRef bbs
[2];
1319 LLVMValueRef unnorm
= NULL
;
1320 LLVMValueRef default_offset
= ctx
->f32_0
;
1321 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
&&
1323 /* In vulkan, whether the sampler uses unnormalized
1324 * coordinates or not is a dynamic property of the
1325 * sampler. Hence, to figure out whether or not we
1326 * need to divide by the texture size, we need to test
1327 * the sampler at runtime. This tests the bit set by
1328 * radv_init_sampler().
1330 LLVMValueRef sampler0
=
1331 LLVMBuildExtractElement(ctx
->builder
, args
->sampler
, ctx
->i32_0
, "");
1332 sampler0
= LLVMBuildLShr(ctx
->builder
, sampler0
,
1333 LLVMConstInt(ctx
->i32
, 15, false), "");
1334 sampler0
= LLVMBuildAnd(ctx
->builder
, sampler0
, ctx
->i32_1
, "");
1335 unnorm
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, sampler0
, ctx
->i32_1
, "");
1336 default_offset
= LLVMConstReal(ctx
->f32
, -0.5);
1339 bbs
[0] = LLVMGetInsertBlock(ctx
->builder
);
1340 if (wa_8888
|| unnorm
) {
1341 assert(!(wa_8888
&& unnorm
));
1342 LLVMValueRef not_needed
= wa_8888
? wa_8888
: unnorm
;
1343 /* Skip the texture size query entirely if we don't need it. */
1344 ac_build_ifcc(ctx
, LLVMBuildNot(ctx
->builder
, not_needed
, ""), 2000);
1345 bbs
[1] = LLVMGetInsertBlock(ctx
->builder
);
1348 /* Query the texture size. */
1349 resinfo
.dim
= ac_get_sampler_dim(ctx
->chip_class
, instr
->sampler_dim
, instr
->is_array
);
1350 resinfo
.opcode
= ac_image_get_resinfo
;
1351 resinfo
.dmask
= 0xf;
1352 resinfo
.lod
= ctx
->i32_0
;
1353 resinfo
.resource
= args
->resource
;
1354 resinfo
.attributes
= AC_FUNC_ATTR_READNONE
;
1355 LLVMValueRef size
= ac_build_image_opcode(ctx
, &resinfo
);
1357 /* Compute -0.5 / size. */
1358 for (unsigned c
= 0; c
< 2; c
++) {
1360 LLVMBuildExtractElement(ctx
->builder
, size
,
1361 LLVMConstInt(ctx
->i32
, c
, 0), "");
1362 half_texel
[c
] = LLVMBuildUIToFP(ctx
->builder
, half_texel
[c
], ctx
->f32
, "");
1363 half_texel
[c
] = ac_build_fdiv(ctx
, ctx
->f32_1
, half_texel
[c
]);
1364 half_texel
[c
] = LLVMBuildFMul(ctx
->builder
, half_texel
[c
],
1365 LLVMConstReal(ctx
->f32
, -0.5), "");
1368 if (wa_8888
|| unnorm
) {
1369 ac_build_endif(ctx
, 2000);
1371 for (unsigned c
= 0; c
< 2; c
++) {
1372 LLVMValueRef values
[2] = { default_offset
, half_texel
[c
] };
1373 half_texel
[c
] = ac_build_phi(ctx
, ctx
->f32
, 2,
1379 for (unsigned c
= 0; c
< 2; c
++) {
1381 tmp
= LLVMBuildBitCast(ctx
->builder
, args
->coords
[c
], ctx
->f32
, "");
1382 args
->coords
[c
] = LLVMBuildFAdd(ctx
->builder
, tmp
, half_texel
[c
], "");
1385 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1386 result
= ac_build_image_opcode(ctx
, args
);
1388 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1389 LLVMValueRef tmp
, tmp2
;
1391 /* if the cube workaround is in place, f2i the result. */
1392 for (unsigned c
= 0; c
< 4; c
++) {
1393 tmp
= LLVMBuildExtractElement(ctx
->builder
, result
, LLVMConstInt(ctx
->i32
, c
, false), "");
1394 if (stype
== GLSL_TYPE_UINT
)
1395 tmp2
= LLVMBuildFPToUI(ctx
->builder
, tmp
, ctx
->i32
, "");
1397 tmp2
= LLVMBuildFPToSI(ctx
->builder
, tmp
, ctx
->i32
, "");
1398 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->i32
, "");
1399 tmp2
= LLVMBuildBitCast(ctx
->builder
, tmp2
, ctx
->i32
, "");
1400 tmp
= LLVMBuildSelect(ctx
->builder
, wa_8888
, tmp2
, tmp
, "");
1401 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f32
, "");
1402 result
= LLVMBuildInsertElement(ctx
->builder
, result
, tmp
, LLVMConstInt(ctx
->i32
, c
, false), "");
1408 static nir_deref_instr
*get_tex_texture_deref(const nir_tex_instr
*instr
)
1410 nir_deref_instr
*texture_deref_instr
= NULL
;
1412 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
1413 switch (instr
->src
[i
].src_type
) {
1414 case nir_tex_src_texture_deref
:
1415 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
1421 return texture_deref_instr
;
1424 static LLVMValueRef
build_tex_intrinsic(struct ac_nir_context
*ctx
,
1425 const nir_tex_instr
*instr
,
1426 struct ac_image_args
*args
)
1428 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
1429 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
1431 return ac_build_buffer_load_format(&ctx
->ac
,
1435 util_last_bit(mask
),
1439 args
->opcode
= ac_image_sample
;
1441 switch (instr
->op
) {
1443 case nir_texop_txf_ms
:
1444 case nir_texop_samples_identical
:
1445 args
->opcode
= args
->level_zero
||
1446 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
?
1447 ac_image_load
: ac_image_load_mip
;
1448 args
->level_zero
= false;
1451 case nir_texop_query_levels
:
1452 args
->opcode
= ac_image_get_resinfo
;
1454 args
->lod
= ctx
->ac
.i32_0
;
1455 args
->level_zero
= false;
1458 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1460 args
->level_zero
= true;
1464 args
->opcode
= ac_image_gather4
;
1465 args
->level_zero
= true;
1468 args
->opcode
= ac_image_get_lod
;
1470 case nir_texop_fragment_fetch
:
1471 case nir_texop_fragment_mask_fetch
:
1472 args
->opcode
= ac_image_load
;
1473 args
->level_zero
= false;
1479 if (instr
->op
== nir_texop_tg4
&& ctx
->ac
.chip_class
<= GFX8
) {
1480 nir_deref_instr
*texture_deref_instr
= get_tex_texture_deref(instr
);
1481 nir_variable
*var
= nir_deref_instr_get_variable(texture_deref_instr
);
1482 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1483 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1484 if (stype
== GLSL_TYPE_UINT
|| stype
== GLSL_TYPE_INT
) {
1485 return lower_gather4_integer(&ctx
->ac
, var
, args
, instr
);
1489 /* Fixup for GFX9 which allocates 1D textures as 2D. */
1490 if (instr
->op
== nir_texop_lod
&& ctx
->ac
.chip_class
== GFX9
) {
1491 if ((args
->dim
== ac_image_2darray
||
1492 args
->dim
== ac_image_2d
) && !args
->coords
[1]) {
1493 args
->coords
[1] = ctx
->ac
.i32_0
;
1497 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1498 bool cs_derivs
= ctx
->stage
== MESA_SHADER_COMPUTE
&&
1499 ctx
->info
->cs
.derivative_group
!= DERIVATIVE_GROUP_NONE
;
1500 if (ctx
->stage
== MESA_SHADER_FRAGMENT
|| cs_derivs
) {
1501 /* Prevent texture instructions with implicit derivatives from being
1502 * sinked into branches. */
1503 switch (instr
->op
) {
1507 args
->attributes
|= AC_FUNC_ATTR_CONVERGENT
;
1514 return ac_build_image_opcode(&ctx
->ac
, args
);
1517 static LLVMValueRef
visit_vulkan_resource_reindex(struct ac_nir_context
*ctx
,
1518 nir_intrinsic_instr
*instr
)
1520 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
1521 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
1523 LLVMValueRef result
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
1524 LLVMSetMetadata(result
, ctx
->ac
.uniform_md_kind
, ctx
->ac
.empty_md
);
1528 static LLVMValueRef
visit_load_push_constant(struct ac_nir_context
*ctx
,
1529 nir_intrinsic_instr
*instr
)
1531 LLVMValueRef ptr
, addr
;
1532 LLVMValueRef src0
= get_src(ctx
, instr
->src
[0]);
1533 unsigned index
= nir_intrinsic_base(instr
);
1535 addr
= LLVMConstInt(ctx
->ac
.i32
, index
, 0);
1536 addr
= LLVMBuildAdd(ctx
->ac
.builder
, addr
, src0
, "");
1538 /* Load constant values from user SGPRS when possible, otherwise
1539 * fallback to the default path that loads directly from memory.
1541 if (LLVMIsConstant(src0
) &&
1542 instr
->dest
.ssa
.bit_size
== 32) {
1543 unsigned count
= instr
->dest
.ssa
.num_components
;
1544 unsigned offset
= index
;
1546 offset
+= LLVMConstIntGetZExtValue(src0
);
1549 offset
-= ctx
->args
->base_inline_push_consts
;
1551 unsigned num_inline_push_consts
= ctx
->args
->num_inline_push_consts
;
1552 if (offset
+ count
<= num_inline_push_consts
) {
1553 LLVMValueRef push_constants
[num_inline_push_consts
];
1554 for (unsigned i
= 0; i
< num_inline_push_consts
; i
++)
1555 push_constants
[i
] = ac_get_arg(&ctx
->ac
,
1556 ctx
->args
->inline_push_consts
[i
]);
1557 return ac_build_gather_values(&ctx
->ac
,
1558 push_constants
+ offset
,
1563 ptr
= LLVMBuildGEP(ctx
->ac
.builder
,
1564 ac_get_arg(&ctx
->ac
, ctx
->args
->push_constants
), &addr
, 1, "");
1566 if (instr
->dest
.ssa
.bit_size
== 8) {
1567 unsigned load_dwords
= instr
->dest
.ssa
.num_components
> 1 ? 2 : 1;
1568 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), 4 * load_dwords
);
1569 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1570 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1572 LLVMValueRef params
[3];
1573 if (load_dwords
> 1) {
1574 LLVMValueRef res_vec
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(ctx
->ac
.i32
, 2), "");
1575 params
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
1576 params
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 0, false), "");
1578 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, ctx
->ac
.i32
, "");
1579 params
[0] = ctx
->ac
.i32_0
;
1583 res
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.alignbyte", ctx
->ac
.i32
, params
, 3, 0);
1585 res
= LLVMBuildTrunc(ctx
->ac
.builder
, res
, LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.num_components
* 8), "");
1586 if (instr
->dest
.ssa
.num_components
> 1)
1587 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), instr
->dest
.ssa
.num_components
), "");
1589 } else if (instr
->dest
.ssa
.bit_size
== 16) {
1590 unsigned load_dwords
= instr
->dest
.ssa
.num_components
/ 2 + 1;
1591 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt16TypeInContext(ctx
->ac
.context
), 2 * load_dwords
);
1592 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1593 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1594 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, vec_type
, "");
1595 LLVMValueRef cond
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, ctx
->ac
.i32_1
, "");
1596 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->ac
.i1
, "");
1597 LLVMValueRef mask
[] = { LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
1598 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
1599 LLVMConstInt(ctx
->ac
.i32
, 4, false)};
1600 LLVMValueRef swizzle_aligned
= LLVMConstVector(&mask
[0], instr
->dest
.ssa
.num_components
);
1601 LLVMValueRef swizzle_unaligned
= LLVMConstVector(&mask
[1], instr
->dest
.ssa
.num_components
);
1602 LLVMValueRef shuffle_aligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_aligned
, "");
1603 LLVMValueRef shuffle_unaligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_unaligned
, "");
1604 res
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, shuffle_unaligned
, shuffle_aligned
, "");
1605 return LLVMBuildBitCast(ctx
->ac
.builder
, res
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1608 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, get_def_type(ctx
, &instr
->dest
.ssa
));
1610 return LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1613 static LLVMValueRef
visit_get_buffer_size(struct ac_nir_context
*ctx
,
1614 const nir_intrinsic_instr
*instr
)
1616 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
1618 return get_buffer_size(ctx
, ctx
->abi
->load_ssbo(ctx
->abi
, index
, false), false);
1621 static uint32_t widen_mask(uint32_t mask
, unsigned multiplier
)
1623 uint32_t new_mask
= 0;
1624 for(unsigned i
= 0; i
< 32 && (1u << i
) <= mask
; ++i
)
1625 if (mask
& (1u << i
))
1626 new_mask
|= ((1u << multiplier
) - 1u) << (i
* multiplier
);
1630 static LLVMValueRef
extract_vector_range(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
1631 unsigned start
, unsigned count
)
1633 LLVMValueRef mask
[] = {
1634 ctx
->i32_0
, ctx
->i32_1
,
1635 LLVMConstInt(ctx
->i32
, 2, false), LLVMConstInt(ctx
->i32
, 3, false) };
1637 unsigned src_elements
= ac_get_llvm_num_components(src
);
1639 if (count
== src_elements
) {
1642 } else if (count
== 1) {
1643 assert(start
< src_elements
);
1644 return LLVMBuildExtractElement(ctx
->builder
, src
, mask
[start
], "");
1646 assert(start
+ count
<= src_elements
);
1648 LLVMValueRef swizzle
= LLVMConstVector(&mask
[start
], count
);
1649 return LLVMBuildShuffleVector(ctx
->builder
, src
, src
, swizzle
, "");
1653 static unsigned get_cache_policy(struct ac_nir_context
*ctx
,
1654 enum gl_access_qualifier access
,
1655 bool may_store_unaligned
,
1656 bool writeonly_memory
)
1658 unsigned cache_policy
= 0;
1660 /* GFX6 has a TC L1 bug causing corruption of 8bit/16bit stores. All
1661 * store opcodes not aligned to a dword are affected. The only way to
1662 * get unaligned stores is through shader images.
1664 if (((may_store_unaligned
&& ctx
->ac
.chip_class
== GFX6
) ||
1665 /* If this is write-only, don't keep data in L1 to prevent
1666 * evicting L1 cache lines that may be needed by other
1670 access
& (ACCESS_COHERENT
| ACCESS_VOLATILE
))) {
1671 cache_policy
|= ac_glc
;
1674 if (access
& ACCESS_STREAM_CACHE_POLICY
)
1675 cache_policy
|= ac_slc
;
1677 return cache_policy
;
1680 static LLVMValueRef
enter_waterfall_ssbo(struct ac_nir_context
*ctx
,
1681 struct waterfall_context
*wctx
,
1682 const nir_intrinsic_instr
*instr
,
1685 return enter_waterfall(ctx
, wctx
, get_src(ctx
, src
),
1686 nir_intrinsic_access(instr
) & ACCESS_NON_UNIFORM
);
1689 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1690 nir_intrinsic_instr
*instr
)
1692 if (ctx
->ac
.postponed_kill
) {
1693 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
1694 ctx
->ac
.postponed_kill
, "");
1695 ac_build_ifcc(&ctx
->ac
, cond
, 7000);
1698 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1699 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1700 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1701 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1702 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
1703 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, writeonly_memory
);
1705 struct waterfall_context wctx
;
1706 LLVMValueRef rsrc_base
= enter_waterfall_ssbo(ctx
, &wctx
, instr
, instr
->src
[1]);
1708 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
, rsrc_base
, true);
1709 LLVMValueRef base_data
= src_data
;
1710 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1711 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1715 LLVMValueRef data
, offset
;
1716 LLVMTypeRef data_type
;
1718 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1720 /* Due to an LLVM limitation with LLVM < 9, split 3-element
1721 * writes into a 2-element and a 1-element write. */
1723 (elem_size_bytes
!= 4 || !ac_has_vec3_support(ctx
->ac
.chip_class
, false))) {
1724 writemask
|= 1 << (start
+ 2);
1727 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1729 /* we can only store 4 DWords at the same time.
1730 * can only happen for 64 Bit vectors. */
1731 if (num_bytes
> 16) {
1732 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1737 /* check alignment of 16 Bit stores */
1738 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1739 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1743 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1745 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1746 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1748 if (num_bytes
== 1) {
1749 ac_build_tbuffer_store_byte(&ctx
->ac
, rsrc
, data
,
1750 offset
, ctx
->ac
.i32_0
,
1752 } else if (num_bytes
== 2) {
1753 ac_build_tbuffer_store_short(&ctx
->ac
, rsrc
, data
,
1754 offset
, ctx
->ac
.i32_0
,
1757 int num_channels
= num_bytes
/ 4;
1759 switch (num_bytes
) {
1760 case 16: /* v4f32 */
1761 data_type
= ctx
->ac
.v4f32
;
1763 case 12: /* v3f32 */
1764 data_type
= ctx
->ac
.v3f32
;
1767 data_type
= ctx
->ac
.v2f32
;
1770 data_type
= ctx
->ac
.f32
;
1773 unreachable("Malformed vector store.");
1775 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1777 ac_build_buffer_store_dword(&ctx
->ac
, rsrc
, data
,
1778 num_channels
, offset
,
1784 exit_waterfall(ctx
, &wctx
, NULL
);
1786 if (ctx
->ac
.postponed_kill
)
1787 ac_build_endif(&ctx
->ac
, 7000);
1790 static LLVMValueRef
emit_ssbo_comp_swap_64(struct ac_nir_context
*ctx
,
1791 LLVMValueRef descriptor
,
1792 LLVMValueRef offset
,
1793 LLVMValueRef compare
,
1794 LLVMValueRef exchange
)
1796 LLVMBasicBlockRef start_block
= NULL
, then_block
= NULL
;
1797 if (ctx
->abi
->robust_buffer_access
) {
1798 LLVMValueRef size
= ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 2);
1800 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
, offset
, size
, "");
1801 start_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1803 ac_build_ifcc(&ctx
->ac
, cond
, -1);
1805 then_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1808 LLVMValueRef ptr_parts
[2] = {
1809 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 0),
1810 LLVMBuildAnd(ctx
->ac
.builder
,
1811 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 1),
1812 LLVMConstInt(ctx
->ac
.i32
, 65535, 0), "")
1815 ptr_parts
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i16
, "");
1816 ptr_parts
[1] = LLVMBuildSExt(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i32
, "");
1818 offset
= LLVMBuildZExt(ctx
->ac
.builder
, offset
, ctx
->ac
.i64
, "");
1820 LLVMValueRef ptr
= ac_build_gather_values(&ctx
->ac
, ptr_parts
, 2);
1821 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ctx
->ac
.i64
, "");
1822 ptr
= LLVMBuildAdd(ctx
->ac
.builder
, ptr
, offset
, "");
1823 ptr
= LLVMBuildIntToPtr(ctx
->ac
.builder
, ptr
, LLVMPointerType(ctx
->ac
.i64
, AC_ADDR_SPACE_GLOBAL
), "");
1825 LLVMValueRef result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, compare
, exchange
, "singlethread-one-as");
1826 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
1828 if (ctx
->abi
->robust_buffer_access
) {
1829 ac_build_endif(&ctx
->ac
, -1);
1831 LLVMBasicBlockRef incoming_blocks
[2] = {
1836 LLVMValueRef incoming_values
[2] = {
1837 LLVMConstInt(ctx
->ac
.i64
, 0, 0),
1840 LLVMValueRef ret
= LLVMBuildPhi(ctx
->ac
.builder
, ctx
->ac
.i64
, "");
1841 LLVMAddIncoming(ret
, incoming_values
, incoming_blocks
, 2);
1848 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1849 nir_intrinsic_instr
*instr
)
1851 if (ctx
->ac
.postponed_kill
) {
1852 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
1853 ctx
->ac
.postponed_kill
, "");
1854 ac_build_ifcc(&ctx
->ac
, cond
, 7001);
1857 LLVMTypeRef return_type
= LLVMTypeOf(get_src(ctx
, instr
->src
[2]));
1859 char name
[64], type
[8];
1860 LLVMValueRef params
[6], descriptor
;
1861 LLVMValueRef result
;
1864 struct waterfall_context wctx
;
1865 LLVMValueRef rsrc_base
= enter_waterfall_ssbo(ctx
, &wctx
, instr
, instr
->src
[0]);
1867 switch (instr
->intrinsic
) {
1868 case nir_intrinsic_ssbo_atomic_add
:
1871 case nir_intrinsic_ssbo_atomic_imin
:
1874 case nir_intrinsic_ssbo_atomic_umin
:
1877 case nir_intrinsic_ssbo_atomic_imax
:
1880 case nir_intrinsic_ssbo_atomic_umax
:
1883 case nir_intrinsic_ssbo_atomic_and
:
1886 case nir_intrinsic_ssbo_atomic_or
:
1889 case nir_intrinsic_ssbo_atomic_xor
:
1892 case nir_intrinsic_ssbo_atomic_exchange
:
1895 case nir_intrinsic_ssbo_atomic_comp_swap
:
1902 descriptor
= ctx
->abi
->load_ssbo(ctx
->abi
,
1906 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
&&
1907 return_type
== ctx
->ac
.i64
) {
1908 result
= emit_ssbo_comp_swap_64(ctx
, descriptor
,
1909 get_src(ctx
, instr
->src
[1]),
1910 get_src(ctx
, instr
->src
[2]),
1911 get_src(ctx
, instr
->src
[3]));
1913 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1914 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1916 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1917 params
[arg_count
++] = descriptor
;
1919 if (LLVM_VERSION_MAJOR
>= 9) {
1920 /* XXX: The new raw/struct atomic intrinsics are buggy with
1921 * LLVM 8, see r358579.
1923 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1924 params
[arg_count
++] = ctx
->ac
.i32_0
; /* soffset */
1925 params
[arg_count
++] = ctx
->ac
.i32_0
; /* slc */
1927 ac_build_type_name_for_intr(return_type
, type
, sizeof(type
));
1928 snprintf(name
, sizeof(name
),
1929 "llvm.amdgcn.raw.buffer.atomic.%s.%s", op
, type
);
1931 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1932 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1933 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1935 assert(return_type
== ctx
->ac
.i32
);
1936 snprintf(name
, sizeof(name
),
1937 "llvm.amdgcn.buffer.atomic.%s", op
);
1940 result
= ac_build_intrinsic(&ctx
->ac
, name
, return_type
, params
,
1944 result
= exit_waterfall(ctx
, &wctx
, result
);
1945 if (ctx
->ac
.postponed_kill
)
1946 ac_build_endif(&ctx
->ac
, 7001);
1950 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
1951 nir_intrinsic_instr
*instr
)
1953 struct waterfall_context wctx
;
1954 LLVMValueRef rsrc_base
= enter_waterfall_ssbo(ctx
, &wctx
, instr
, instr
->src
[0]);
1956 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1957 int num_components
= instr
->num_components
;
1958 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1959 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, false);
1961 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1962 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
, rsrc_base
, false);
1963 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
1965 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1966 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
1968 LLVMValueRef results
[4];
1969 for (int i
= 0; i
< num_components
;) {
1970 int num_elems
= num_components
- i
;
1971 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
1973 if (num_elems
* elem_size_bytes
> 16)
1974 num_elems
= 16 / elem_size_bytes
;
1975 int load_bytes
= num_elems
* elem_size_bytes
;
1977 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
1981 if (load_bytes
== 1) {
1982 ret
= ac_build_tbuffer_load_byte(&ctx
->ac
,
1988 } else if (load_bytes
== 2) {
1989 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
1996 int num_channels
= util_next_power_of_two(load_bytes
) / 4;
1997 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
1999 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_channels
,
2000 vindex
, offset
, immoffset
, 0,
2001 cache_policy
, can_speculate
, false);
2004 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
2005 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
2006 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
2008 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
2009 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
2011 for (unsigned j
= 0; j
< num_elems
; j
++) {
2012 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
2017 LLVMValueRef ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
2018 return exit_waterfall(ctx
, &wctx
, ret
);
2021 static LLVMValueRef
enter_waterfall_ubo(struct ac_nir_context
*ctx
,
2022 struct waterfall_context
*wctx
,
2023 const nir_intrinsic_instr
*instr
)
2025 return enter_waterfall(ctx
, wctx
, get_src(ctx
, instr
->src
[0]),
2026 nir_intrinsic_access(instr
) & ACCESS_NON_UNIFORM
);
2029 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
2030 nir_intrinsic_instr
*instr
)
2032 struct waterfall_context wctx
;
2033 LLVMValueRef rsrc_base
= enter_waterfall_ubo(ctx
, &wctx
, instr
);
2036 LLVMValueRef rsrc
= rsrc_base
;
2037 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
2038 int num_components
= instr
->num_components
;
2040 if (ctx
->abi
->load_ubo
)
2041 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
2043 if (instr
->dest
.ssa
.bit_size
== 64)
2044 num_components
*= 2;
2046 if (instr
->dest
.ssa
.bit_size
== 16 || instr
->dest
.ssa
.bit_size
== 8) {
2047 unsigned load_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
2048 LLVMValueRef results
[num_components
];
2049 for (unsigned i
= 0; i
< num_components
; ++i
) {
2050 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
,
2053 if (load_bytes
== 1) {
2054 results
[i
] = ac_build_tbuffer_load_byte(&ctx
->ac
,
2061 assert(load_bytes
== 2);
2062 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
2070 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
2072 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
2073 NULL
, 0, 0, true, true);
2075 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
2078 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
2079 get_def_type(ctx
, &instr
->dest
.ssa
), "");
2081 return exit_waterfall(ctx
, &wctx
, ret
);
2085 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
2086 bool vs_in
, unsigned *vertex_index_out
,
2087 LLVMValueRef
*vertex_index_ref
,
2088 unsigned *const_out
, LLVMValueRef
*indir_out
)
2090 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
2091 nir_deref_path path
;
2092 unsigned idx_lvl
= 1;
2094 nir_deref_path_init(&path
, instr
, NULL
);
2096 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
2097 if (vertex_index_ref
) {
2098 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
2099 if (vertex_index_out
)
2100 *vertex_index_out
= 0;
2102 *vertex_index_out
= nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
2107 uint32_t const_offset
= 0;
2108 LLVMValueRef offset
= NULL
;
2110 if (var
->data
.compact
) {
2111 assert(instr
->deref_type
== nir_deref_type_array
);
2112 const_offset
= nir_src_as_uint(instr
->arr
.index
);
2116 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
2117 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
2118 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
2119 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
2121 for (unsigned i
= 0; i
< index
; i
++) {
2122 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
2123 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
2125 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
2126 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
2127 if (nir_src_is_const(path
.path
[idx_lvl
]->arr
.index
)) {
2128 const_offset
+= size
*
2129 nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
2131 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
2132 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
2134 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
2139 unreachable("Uhandled deref type in get_deref_instr_offset");
2143 nir_deref_path_finish(&path
);
2145 if (const_offset
&& offset
)
2146 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
2147 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
2150 *const_out
= const_offset
;
2151 *indir_out
= offset
;
2154 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
2155 nir_intrinsic_instr
*instr
,
2158 LLVMValueRef result
;
2159 LLVMValueRef vertex_index
= NULL
;
2160 LLVMValueRef indir_index
= NULL
;
2161 unsigned const_index
= 0;
2163 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
2165 unsigned location
= var
->data
.location
;
2166 unsigned driver_location
= var
->data
.driver_location
;
2167 const bool is_patch
= var
->data
.patch
||
2168 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
2169 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
;
2170 const bool is_compact
= var
->data
.compact
;
2172 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2173 false, NULL
, is_patch
? NULL
: &vertex_index
,
2174 &const_index
, &indir_index
);
2176 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2178 LLVMTypeRef src_component_type
;
2179 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
2180 src_component_type
= LLVMGetElementType(dest_type
);
2182 src_component_type
= dest_type
;
2184 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
2185 vertex_index
, indir_index
,
2186 const_index
, location
, driver_location
,
2187 var
->data
.location_frac
,
2188 instr
->num_components
,
2189 is_patch
, is_compact
, load_inputs
);
2190 if (instr
->dest
.ssa
.bit_size
== 16) {
2191 result
= ac_to_integer(&ctx
->ac
, result
);
2192 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
2194 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
2198 type_scalar_size_bytes(const struct glsl_type
*type
)
2200 assert(glsl_type_is_vector_or_scalar(type
) ||
2201 glsl_type_is_matrix(type
));
2202 return glsl_type_is_boolean(type
) ? 4 : glsl_get_bit_size(type
) / 8;
2205 static LLVMValueRef
visit_load_var(struct ac_nir_context
*ctx
,
2206 nir_intrinsic_instr
*instr
)
2208 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2209 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2211 LLVMValueRef values
[8];
2213 int ve
= instr
->dest
.ssa
.num_components
;
2215 LLVMValueRef indir_index
;
2217 unsigned const_index
;
2218 unsigned stride
= 4;
2219 int mode
= deref
->mode
;
2222 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
2223 var
->data
.mode
== nir_var_shader_in
;
2224 idx
= var
->data
.driver_location
;
2225 comp
= var
->data
.location_frac
;
2226 mode
= var
->data
.mode
;
2228 get_deref_offset(ctx
, deref
, vs_in
, NULL
, NULL
,
2229 &const_index
, &indir_index
);
2231 if (var
->data
.compact
) {
2233 const_index
+= comp
;
2238 if (instr
->dest
.ssa
.bit_size
== 64 &&
2239 (deref
->mode
== nir_var_shader_in
||
2240 deref
->mode
== nir_var_shader_out
||
2241 deref
->mode
== nir_var_function_temp
))
2245 case nir_var_shader_in
:
2246 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
2247 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
2248 return load_tess_varyings(ctx
, instr
, true);
2251 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
2252 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
2253 LLVMValueRef indir_index
;
2254 unsigned const_index
, vertex_index
;
2255 get_deref_offset(ctx
, deref
, false, &vertex_index
, NULL
,
2256 &const_index
, &indir_index
);
2257 assert(indir_index
== NULL
);
2259 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
2260 var
->data
.driver_location
,
2261 var
->data
.location_frac
,
2262 instr
->num_components
, vertex_index
, const_index
, type
);
2265 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2267 unsigned count
= glsl_count_attribute_slots(
2269 ctx
->stage
== MESA_SHADER_VERTEX
);
2271 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2272 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
2273 stride
, false, true);
2275 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2279 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
2282 case nir_var_function_temp
:
2283 for (unsigned chan
= 0; chan
< ve
; chan
++) {
2285 unsigned count
= glsl_count_attribute_slots(
2288 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2289 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2290 stride
, true, true);
2292 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2296 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
2300 case nir_var_shader_out
:
2301 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2302 return load_tess_varyings(ctx
, instr
, false);
2305 if (ctx
->stage
== MESA_SHADER_FRAGMENT
&&
2306 var
->data
.fb_fetch_output
&&
2307 ctx
->abi
->emit_fbfetch
)
2308 return ctx
->abi
->emit_fbfetch(ctx
->abi
);
2310 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2312 unsigned count
= glsl_count_attribute_slots(
2315 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2316 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2317 stride
, true, true);
2319 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2323 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
2324 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
2329 case nir_var_mem_global
: {
2330 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2331 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2332 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2333 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2335 LLVMTypeRef result_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2336 if (stride
!= natural_stride
) {
2337 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(result_type
),
2338 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2339 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2341 for (unsigned i
= 0; i
< instr
->dest
.ssa
.num_components
; ++i
) {
2342 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, i
* stride
/ natural_stride
, 0);
2343 values
[i
] = LLVMBuildLoad(ctx
->ac
.builder
,
2344 ac_build_gep_ptr(&ctx
->ac
, address
, offset
), "");
2346 return ac_build_gather_values(&ctx
->ac
, values
, instr
->dest
.ssa
.num_components
);
2348 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2349 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2350 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2351 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2356 unreachable("unhandle variable mode");
2358 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
2359 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2363 visit_store_var(struct ac_nir_context
*ctx
,
2364 nir_intrinsic_instr
*instr
)
2366 if (ctx
->ac
.postponed_kill
) {
2367 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2368 ctx
->ac
.postponed_kill
, "");
2369 ac_build_ifcc(&ctx
->ac
, cond
, 7002);
2372 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2373 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2375 LLVMValueRef temp_ptr
, value
;
2378 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
2379 int writemask
= instr
->const_index
[0];
2380 LLVMValueRef indir_index
;
2381 unsigned const_index
;
2384 get_deref_offset(ctx
, deref
, false,
2385 NULL
, NULL
, &const_index
, &indir_index
);
2386 idx
= var
->data
.driver_location
;
2387 comp
= var
->data
.location_frac
;
2389 if (var
->data
.compact
) {
2390 const_index
+= comp
;
2395 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64 &&
2396 (deref
->mode
== nir_var_shader_out
||
2397 deref
->mode
== nir_var_function_temp
)) {
2399 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2400 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2403 writemask
= widen_mask(writemask
, 2);
2406 writemask
= writemask
<< comp
;
2408 switch (deref
->mode
) {
2409 case nir_var_shader_out
:
2411 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2412 LLVMValueRef vertex_index
= NULL
;
2413 LLVMValueRef indir_index
= NULL
;
2414 unsigned const_index
= 0;
2415 const bool is_patch
= var
->data
.patch
||
2416 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
2417 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
;
2419 get_deref_offset(ctx
, deref
, false, NULL
,
2420 is_patch
? NULL
: &vertex_index
,
2421 &const_index
, &indir_index
);
2423 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2424 vertex_index
, indir_index
,
2425 const_index
, src
, writemask
);
2429 for (unsigned chan
= 0; chan
< 8; chan
++) {
2431 if (!(writemask
& (1 << chan
)))
2434 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2436 if (var
->data
.compact
)
2439 unsigned count
= glsl_count_attribute_slots(
2442 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2443 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2444 stride
, true, true);
2446 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2447 value
, indir_index
, "");
2448 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2449 count
, stride
, tmp_vec
);
2452 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2454 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2458 case nir_var_function_temp
:
2459 for (unsigned chan
= 0; chan
< 8; chan
++) {
2460 if (!(writemask
& (1 << chan
)))
2463 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2465 unsigned count
= glsl_count_attribute_slots(
2468 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2469 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2472 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2473 value
, indir_index
, "");
2474 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2477 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2479 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2484 case nir_var_mem_global
: {
2485 int writemask
= instr
->const_index
[0];
2486 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2487 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2489 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2490 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2491 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2493 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2494 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2495 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2497 if (writemask
== (1u << ac_get_llvm_num_components(val
)) - 1 &&
2498 stride
== natural_stride
) {
2499 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2500 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2501 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2503 val
= LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2504 LLVMGetElementType(LLVMTypeOf(address
)), "");
2505 LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2507 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(LLVMTypeOf(val
)),
2508 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2509 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2510 for (unsigned chan
= 0; chan
< 4; chan
++) {
2511 if (!(writemask
& (1 << chan
)))
2514 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, chan
* stride
/ natural_stride
, 0);
2516 LLVMValueRef ptr
= ac_build_gep_ptr(&ctx
->ac
, address
, offset
);
2517 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2519 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2520 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2521 LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2531 if (ctx
->ac
.postponed_kill
)
2532 ac_build_endif(&ctx
->ac
, 7002);
2535 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2538 case GLSL_SAMPLER_DIM_BUF
:
2540 case GLSL_SAMPLER_DIM_1D
:
2541 return array
? 2 : 1;
2542 case GLSL_SAMPLER_DIM_2D
:
2543 return array
? 3 : 2;
2544 case GLSL_SAMPLER_DIM_MS
:
2545 return array
? 4 : 3;
2546 case GLSL_SAMPLER_DIM_3D
:
2547 case GLSL_SAMPLER_DIM_CUBE
:
2549 case GLSL_SAMPLER_DIM_RECT
:
2550 case GLSL_SAMPLER_DIM_SUBPASS
:
2552 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2560 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2561 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2562 LLVMValueRef coord_z
,
2563 LLVMValueRef sample_index
,
2564 LLVMValueRef fmask_desc_ptr
)
2566 unsigned sample_chan
= coord_z
? 3 : 2;
2567 LLVMValueRef addr
[4] = {coord_x
, coord_y
, coord_z
};
2568 addr
[sample_chan
] = sample_index
;
2570 ac_apply_fmask_to_sample(ctx
, fmask_desc_ptr
, addr
, coord_z
!= NULL
);
2571 return addr
[sample_chan
];
2574 static nir_deref_instr
*get_image_deref(const nir_intrinsic_instr
*instr
)
2576 assert(instr
->src
[0].is_ssa
);
2577 return nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2580 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2581 const nir_intrinsic_instr
*instr
,
2582 LLVMValueRef dynamic_index
,
2583 enum ac_descriptor_type desc_type
,
2586 nir_deref_instr
*deref_instr
=
2587 instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
?
2588 nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
) : NULL
;
2590 return get_sampler_desc(ctx
, deref_instr
, desc_type
, &instr
->instr
, dynamic_index
, true, write
);
2593 static void get_image_coords(struct ac_nir_context
*ctx
,
2594 const nir_intrinsic_instr
*instr
,
2595 LLVMValueRef dynamic_desc_index
,
2596 struct ac_image_args
*args
,
2597 enum glsl_sampler_dim dim
,
2600 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2601 LLVMValueRef masks
[] = {
2602 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2603 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2605 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2608 ASSERTED
bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2609 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2610 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2611 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2612 bool gfx9_1d
= ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2613 assert(!add_frag_pos
&& "Input attachments should be lowered by this point.");
2614 count
= image_type_to_components_count(dim
, is_array
);
2616 if (is_ms
&& (instr
->intrinsic
== nir_intrinsic_image_deref_load
||
2617 instr
->intrinsic
== nir_intrinsic_bindless_image_load
)) {
2618 LLVMValueRef fmask_load_address
[3];
2620 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2621 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2623 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2625 fmask_load_address
[2] = NULL
;
2627 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2628 fmask_load_address
[0],
2629 fmask_load_address
[1],
2630 fmask_load_address
[2],
2632 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2633 AC_DESC_FMASK
, &instr
->instr
, dynamic_desc_index
, true, false));
2635 if (count
== 1 && !gfx9_1d
) {
2636 if (instr
->src
[1].ssa
->num_components
)
2637 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2639 args
->coords
[0] = src0
;
2644 for (chan
= 0; chan
< count
; ++chan
) {
2645 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2650 args
->coords
[2] = args
->coords
[1];
2651 args
->coords
[1] = ctx
->ac
.i32_0
;
2653 args
->coords
[1] = ctx
->ac
.i32_0
;
2656 if (ctx
->ac
.chip_class
== GFX9
&&
2657 dim
== GLSL_SAMPLER_DIM_2D
&&
2659 /* The hw can't bind a slice of a 3D image as a 2D
2660 * image, because it ignores BASE_ARRAY if the target
2661 * is 3D. The workaround is to read BASE_ARRAY and set
2662 * it as the 3rd address operand for all 2D images.
2664 LLVMValueRef first_layer
, const5
, mask
;
2666 const5
= LLVMConstInt(ctx
->ac
.i32
, 5, 0);
2667 mask
= LLVMConstInt(ctx
->ac
.i32
, S_008F24_BASE_ARRAY(~0), 0);
2668 first_layer
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
->resource
, const5
, "");
2669 first_layer
= LLVMBuildAnd(ctx
->ac
.builder
, first_layer
, mask
, "");
2671 args
->coords
[count
] = first_layer
;
2677 args
->coords
[count
] = sample_index
;
2683 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2684 const nir_intrinsic_instr
*instr
,
2685 LLVMValueRef dynamic_index
,
2686 bool write
, bool atomic
)
2688 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_BUFFER
, write
);
2689 if (ctx
->ac
.chip_class
== GFX9
&& LLVM_VERSION_MAJOR
< 9 && atomic
) {
2690 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2691 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2692 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2694 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2695 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2696 elem_count
, stride
, "");
2698 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2699 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2704 static LLVMValueRef
enter_waterfall_image(struct ac_nir_context
*ctx
,
2705 struct waterfall_context
*wctx
,
2706 const nir_intrinsic_instr
*instr
)
2708 nir_deref_instr
*deref_instr
= NULL
;
2710 if (instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
)
2711 deref_instr
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2713 LLVMValueRef value
= get_sampler_desc_index(ctx
, deref_instr
, &instr
->instr
, true);
2714 return enter_waterfall(ctx
, wctx
, value
, nir_intrinsic_access(instr
) & ACCESS_NON_UNIFORM
);
2717 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2718 const nir_intrinsic_instr
*instr
,
2723 enum glsl_sampler_dim dim
;
2724 enum gl_access_qualifier access
;
2727 dim
= nir_intrinsic_image_dim(instr
);
2728 access
= nir_intrinsic_access(instr
);
2729 is_array
= nir_intrinsic_image_array(instr
);
2731 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2732 const struct glsl_type
*type
= image_deref
->type
;
2733 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2734 dim
= glsl_get_sampler_dim(type
);
2735 access
= var
->data
.access
;
2736 is_array
= glsl_sampler_type_is_array(type
);
2739 struct waterfall_context wctx
;
2740 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
2742 struct ac_image_args args
= {};
2744 args
.cache_policy
= get_cache_policy(ctx
, access
, false, false);
2746 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2747 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2748 unsigned num_channels
= util_last_bit(mask
);
2749 LLVMValueRef rsrc
, vindex
;
2751 rsrc
= get_image_buffer_descriptor(ctx
, instr
, dynamic_index
, false, false);
2752 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2755 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2756 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2757 ctx
->ac
.i32_0
, num_channels
,
2760 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2762 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2763 res
= ac_to_integer(&ctx
->ac
, res
);
2765 bool level_zero
= nir_src_is_const(instr
->src
[3]) && nir_src_as_uint(instr
->src
[3]) == 0;
2767 args
.opcode
= level_zero
? ac_image_load
: ac_image_load_mip
;
2768 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, false);
2769 get_image_coords(ctx
, instr
, dynamic_index
, &args
, dim
, is_array
);
2770 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2772 args
.lod
= get_src(ctx
, instr
->src
[3]);
2774 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2776 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2778 return exit_waterfall(ctx
, &wctx
, res
);
2781 static void visit_image_store(struct ac_nir_context
*ctx
,
2782 const nir_intrinsic_instr
*instr
,
2785 if (ctx
->ac
.postponed_kill
) {
2786 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2787 ctx
->ac
.postponed_kill
, "");
2788 ac_build_ifcc(&ctx
->ac
, cond
, 7003);
2791 enum glsl_sampler_dim dim
;
2792 enum gl_access_qualifier access
;
2796 dim
= nir_intrinsic_image_dim(instr
);
2797 access
= nir_intrinsic_access(instr
);
2798 is_array
= nir_intrinsic_image_array(instr
);
2800 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2801 const struct glsl_type
*type
= image_deref
->type
;
2802 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2803 dim
= glsl_get_sampler_dim(type
);
2804 access
= var
->data
.access
;
2805 is_array
= glsl_sampler_type_is_array(type
);
2808 struct waterfall_context wctx
;
2809 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
2811 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
2812 struct ac_image_args args
= {};
2814 args
.cache_policy
= get_cache_policy(ctx
, access
, true, writeonly_memory
);
2816 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2817 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, dynamic_index
, true, false);
2818 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2819 unsigned src_channels
= ac_get_llvm_num_components(src
);
2820 LLVMValueRef vindex
;
2822 if (src_channels
== 3)
2823 src
= ac_build_expand_to_vec4(&ctx
->ac
, src
, 3);
2825 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2826 get_src(ctx
, instr
->src
[1]),
2829 ac_build_buffer_store_format(&ctx
->ac
, rsrc
, src
, vindex
,
2830 ctx
->ac
.i32_0
, src_channels
,
2833 bool level_zero
= nir_src_is_const(instr
->src
[4]) && nir_src_as_uint(instr
->src
[4]) == 0;
2835 args
.opcode
= level_zero
? ac_image_store
: ac_image_store_mip
;
2836 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2837 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, true);
2838 get_image_coords(ctx
, instr
, dynamic_index
, &args
, dim
, is_array
);
2839 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2841 args
.lod
= get_src(ctx
, instr
->src
[4]);
2844 ac_build_image_opcode(&ctx
->ac
, &args
);
2847 exit_waterfall(ctx
, &wctx
, NULL
);
2848 if (ctx
->ac
.postponed_kill
)
2849 ac_build_endif(&ctx
->ac
, 7003);
2852 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2853 const nir_intrinsic_instr
*instr
,
2856 if (ctx
->ac
.postponed_kill
) {
2857 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2858 ctx
->ac
.postponed_kill
, "");
2859 ac_build_ifcc(&ctx
->ac
, cond
, 7004);
2862 LLVMValueRef params
[7];
2863 int param_count
= 0;
2865 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
||
2866 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_comp_swap
;
2867 const char *atomic_name
;
2868 char intrinsic_name
[64];
2869 enum ac_atomic_op atomic_subop
;
2870 ASSERTED
int length
;
2872 enum glsl_sampler_dim dim
;
2875 if (instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imin
||
2876 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umin
||
2877 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imax
||
2878 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umax
) {
2879 ASSERTED
const GLenum format
= nir_intrinsic_format(instr
);
2880 assert(format
== GL_R32UI
|| format
== GL_R32I
);
2882 dim
= nir_intrinsic_image_dim(instr
);
2883 is_array
= nir_intrinsic_image_array(instr
);
2885 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2886 dim
= glsl_get_sampler_dim(type
);
2887 is_array
= glsl_sampler_type_is_array(type
);
2890 struct waterfall_context wctx
;
2891 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
2893 switch (instr
->intrinsic
) {
2894 case nir_intrinsic_bindless_image_atomic_add
:
2895 case nir_intrinsic_image_deref_atomic_add
:
2896 atomic_name
= "add";
2897 atomic_subop
= ac_atomic_add
;
2899 case nir_intrinsic_bindless_image_atomic_imin
:
2900 case nir_intrinsic_image_deref_atomic_imin
:
2901 atomic_name
= "smin";
2902 atomic_subop
= ac_atomic_smin
;
2904 case nir_intrinsic_bindless_image_atomic_umin
:
2905 case nir_intrinsic_image_deref_atomic_umin
:
2906 atomic_name
= "umin";
2907 atomic_subop
= ac_atomic_umin
;
2909 case nir_intrinsic_bindless_image_atomic_imax
:
2910 case nir_intrinsic_image_deref_atomic_imax
:
2911 atomic_name
= "smax";
2912 atomic_subop
= ac_atomic_smax
;
2914 case nir_intrinsic_bindless_image_atomic_umax
:
2915 case nir_intrinsic_image_deref_atomic_umax
:
2916 atomic_name
= "umax";
2917 atomic_subop
= ac_atomic_umax
;
2919 case nir_intrinsic_bindless_image_atomic_and
:
2920 case nir_intrinsic_image_deref_atomic_and
:
2921 atomic_name
= "and";
2922 atomic_subop
= ac_atomic_and
;
2924 case nir_intrinsic_bindless_image_atomic_or
:
2925 case nir_intrinsic_image_deref_atomic_or
:
2927 atomic_subop
= ac_atomic_or
;
2929 case nir_intrinsic_bindless_image_atomic_xor
:
2930 case nir_intrinsic_image_deref_atomic_xor
:
2931 atomic_name
= "xor";
2932 atomic_subop
= ac_atomic_xor
;
2934 case nir_intrinsic_bindless_image_atomic_exchange
:
2935 case nir_intrinsic_image_deref_atomic_exchange
:
2936 atomic_name
= "swap";
2937 atomic_subop
= ac_atomic_swap
;
2939 case nir_intrinsic_bindless_image_atomic_comp_swap
:
2940 case nir_intrinsic_image_deref_atomic_comp_swap
:
2941 atomic_name
= "cmpswap";
2942 atomic_subop
= 0; /* not used */
2944 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
2945 case nir_intrinsic_image_deref_atomic_inc_wrap
: {
2946 atomic_name
= "inc";
2947 atomic_subop
= ac_atomic_inc_wrap
;
2948 /* ATOMIC_INC instruction does:
2949 * value = (value + 1) % (data + 1)
2951 * value = (value + 1) % data
2952 * So replace 'data' by 'data - 1'.
2954 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
] =
2955 LLVMBuildSub(ctx
->ac
.builder
,
2956 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
],
2960 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
2961 case nir_intrinsic_image_deref_atomic_dec_wrap
:
2962 atomic_name
= "dec";
2963 atomic_subop
= ac_atomic_dec_wrap
;
2970 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
2971 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
2973 LLVMValueRef result
;
2974 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2975 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, dynamic_index
, true, true);
2976 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2977 ctx
->ac
.i32_0
, ""); /* vindex */
2978 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
2979 if (LLVM_VERSION_MAJOR
>= 9) {
2980 /* XXX: The new raw/struct atomic intrinsics are buggy
2981 * with LLVM 8, see r358579.
2983 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
2984 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
2986 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2987 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
2989 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
2991 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2992 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
2995 assert(length
< sizeof(intrinsic_name
));
2996 result
= ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
2997 params
, param_count
, 0);
2999 struct ac_image_args args
= {};
3000 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
3001 args
.atomic
= atomic_subop
;
3002 args
.data
[0] = params
[0];
3004 args
.data
[1] = params
[1];
3005 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, true);
3006 get_image_coords(ctx
, instr
, dynamic_index
, &args
, dim
, is_array
);
3007 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
3009 result
= ac_build_image_opcode(&ctx
->ac
, &args
);
3012 result
= exit_waterfall(ctx
, &wctx
, result
);
3013 if (ctx
->ac
.postponed_kill
)
3014 ac_build_endif(&ctx
->ac
, 7004);
3018 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
3019 nir_intrinsic_instr
*instr
)
3021 struct waterfall_context wctx
;
3022 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
3023 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, false);
3025 LLVMValueRef ret
= ac_build_image_get_sample_count(&ctx
->ac
, rsrc
);
3027 return exit_waterfall(ctx
, &wctx
, ret
);
3030 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
3031 const nir_intrinsic_instr
*instr
,
3036 enum glsl_sampler_dim dim
;
3039 dim
= nir_intrinsic_image_dim(instr
);
3040 is_array
= nir_intrinsic_image_array(instr
);
3042 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
3043 dim
= glsl_get_sampler_dim(type
);
3044 is_array
= glsl_sampler_type_is_array(type
);
3047 struct waterfall_context wctx
;
3048 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
3050 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
3051 res
= get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_BUFFER
, false), true);
3054 struct ac_image_args args
= { 0 };
3056 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
3058 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, false);
3059 args
.opcode
= ac_image_get_resinfo
;
3060 args
.lod
= ctx
->ac
.i32_0
;
3061 args
.attributes
= AC_FUNC_ATTR_READNONE
;
3063 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
3065 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
3067 if (dim
== GLSL_SAMPLER_DIM_CUBE
&& is_array
) {
3068 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
3069 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
3070 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
3071 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
3074 if (ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
&& is_array
) {
3075 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
3076 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
3080 return exit_waterfall(ctx
, &wctx
, res
);
3083 static void emit_membar(struct ac_llvm_context
*ac
,
3084 const nir_intrinsic_instr
*instr
)
3086 unsigned wait_flags
= 0;
3088 switch (instr
->intrinsic
) {
3089 case nir_intrinsic_memory_barrier
:
3090 case nir_intrinsic_group_memory_barrier
:
3091 wait_flags
= AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
3093 case nir_intrinsic_memory_barrier_buffer
:
3094 case nir_intrinsic_memory_barrier_image
:
3095 wait_flags
= AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
3097 case nir_intrinsic_memory_barrier_shared
:
3098 wait_flags
= AC_WAIT_LGKM
;
3104 ac_build_waitcnt(ac
, wait_flags
);
3107 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
3109 /* GFX6 only (thanks to a hw bug workaround):
3110 * The real barrier instruction isn’t needed, because an entire patch
3111 * always fits into a single wave.
3113 if (ac
->chip_class
== GFX6
&& stage
== MESA_SHADER_TESS_CTRL
) {
3114 ac_build_waitcnt(ac
, AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
);
3117 ac_build_s_barrier(ac
);
3120 static void emit_discard(struct ac_nir_context
*ctx
,
3121 const nir_intrinsic_instr
*instr
)
3125 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
3126 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
3127 get_src(ctx
, instr
->src
[0]),
3130 assert(instr
->intrinsic
== nir_intrinsic_discard
);
3131 cond
= ctx
->ac
.i1false
;
3134 ac_build_kill_if_false(&ctx
->ac
, cond
);
3137 static void emit_demote(struct ac_nir_context
*ctx
,
3138 const nir_intrinsic_instr
*instr
)
3142 if (instr
->intrinsic
== nir_intrinsic_demote_if
) {
3143 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
3144 get_src(ctx
, instr
->src
[0]),
3147 assert(instr
->intrinsic
== nir_intrinsic_demote
);
3148 cond
= ctx
->ac
.i1false
;
3151 /* Kill immediately while maintaining WQM. */
3152 ac_build_kill_if_false(&ctx
->ac
, ac_build_wqm_vote(&ctx
->ac
, cond
));
3154 LLVMValueRef mask
= LLVMBuildLoad(ctx
->ac
.builder
, ctx
->ac
.postponed_kill
, "");
3155 mask
= LLVMBuildAnd(ctx
->ac
.builder
, mask
, cond
, "");
3156 LLVMBuildStore(ctx
->ac
.builder
, mask
, ctx
->ac
.postponed_kill
);
3161 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
3163 LLVMValueRef result
;
3164 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
3165 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3166 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3167 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
3169 if (ctx
->ac
.wave_size
== 32)
3170 result
= LLVMBuildLShr(ctx
->ac
.builder
, result
,
3171 LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
3173 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
3177 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
3179 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
3180 LLVMValueRef result
;
3181 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3182 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3183 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
3184 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
3186 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
3191 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
3193 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
3194 return LLVMBuildAnd(ctx
->ac
.builder
,
3195 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3196 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
3198 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
3203 visit_first_invocation(struct ac_nir_context
*ctx
)
3205 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
3206 const char *intr
= ctx
->ac
.wave_size
== 32 ? "llvm.cttz.i32" : "llvm.cttz.i64";
3208 /* The second argument is whether cttz(0) should be defined, but we do not care. */
3209 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
3210 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
, intr
,
3211 ctx
->ac
.iN_wavemask
, args
, 2,
3212 AC_FUNC_ATTR_NOUNWIND
|
3213 AC_FUNC_ATTR_READNONE
);
3215 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
3219 visit_load_shared(struct ac_nir_context
*ctx
,
3220 const nir_intrinsic_instr
*instr
)
3222 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
3224 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0],
3225 instr
->dest
.ssa
.bit_size
);
3227 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
3228 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
3229 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
3230 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
3233 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
3234 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
3238 visit_store_shared(struct ac_nir_context
*ctx
,
3239 const nir_intrinsic_instr
*instr
)
3241 LLVMValueRef derived_ptr
, data
,index
;
3242 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3244 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1],
3245 instr
->src
[0].ssa
->bit_size
);
3246 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
3248 int writemask
= nir_intrinsic_write_mask(instr
);
3249 for (int chan
= 0; chan
< 4; chan
++) {
3250 if (!(writemask
& (1 << chan
))) {
3253 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
3254 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
3255 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
3256 LLVMBuildStore(builder
, data
, derived_ptr
);
3260 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
3261 const nir_intrinsic_instr
*instr
,
3262 LLVMValueRef ptr
, int src_idx
)
3264 if (ctx
->ac
.postponed_kill
) {
3265 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
3266 ctx
->ac
.postponed_kill
, "");
3267 ac_build_ifcc(&ctx
->ac
, cond
, 7005);
3270 LLVMValueRef result
;
3271 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
3273 const char *sync_scope
= LLVM_VERSION_MAJOR
>= 9 ? "workgroup-one-as" : "workgroup";
3275 if (instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
) {
3276 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
3277 if (deref
->mode
== nir_var_mem_global
) {
3278 /* use "singlethread" sync scope to implement relaxed ordering */
3279 sync_scope
= LLVM_VERSION_MAJOR
>= 9 ? "singlethread-one-as" : "singlethread";
3281 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(src
), LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
)));
3282 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ptr_type
, "");
3286 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
3287 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
3288 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
3289 result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, src
, src1
, sync_scope
);
3290 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
3292 LLVMAtomicRMWBinOp op
;
3293 switch (instr
->intrinsic
) {
3294 case nir_intrinsic_shared_atomic_add
:
3295 case nir_intrinsic_deref_atomic_add
:
3296 op
= LLVMAtomicRMWBinOpAdd
;
3298 case nir_intrinsic_shared_atomic_umin
:
3299 case nir_intrinsic_deref_atomic_umin
:
3300 op
= LLVMAtomicRMWBinOpUMin
;
3302 case nir_intrinsic_shared_atomic_umax
:
3303 case nir_intrinsic_deref_atomic_umax
:
3304 op
= LLVMAtomicRMWBinOpUMax
;
3306 case nir_intrinsic_shared_atomic_imin
:
3307 case nir_intrinsic_deref_atomic_imin
:
3308 op
= LLVMAtomicRMWBinOpMin
;
3310 case nir_intrinsic_shared_atomic_imax
:
3311 case nir_intrinsic_deref_atomic_imax
:
3312 op
= LLVMAtomicRMWBinOpMax
;
3314 case nir_intrinsic_shared_atomic_and
:
3315 case nir_intrinsic_deref_atomic_and
:
3316 op
= LLVMAtomicRMWBinOpAnd
;
3318 case nir_intrinsic_shared_atomic_or
:
3319 case nir_intrinsic_deref_atomic_or
:
3320 op
= LLVMAtomicRMWBinOpOr
;
3322 case nir_intrinsic_shared_atomic_xor
:
3323 case nir_intrinsic_deref_atomic_xor
:
3324 op
= LLVMAtomicRMWBinOpXor
;
3326 case nir_intrinsic_shared_atomic_exchange
:
3327 case nir_intrinsic_deref_atomic_exchange
:
3328 op
= LLVMAtomicRMWBinOpXchg
;
3334 result
= ac_build_atomic_rmw(&ctx
->ac
, op
, ptr
, ac_to_integer(&ctx
->ac
, src
), sync_scope
);
3337 if (ctx
->ac
.postponed_kill
)
3338 ac_build_endif(&ctx
->ac
, 7005);
3342 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
3344 LLVMValueRef values
[2];
3345 LLVMValueRef pos
[2];
3347 pos
[0] = ac_to_float(&ctx
->ac
,
3348 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[0]));
3349 pos
[1] = ac_to_float(&ctx
->ac
,
3350 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[1]));
3352 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
3353 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
3354 return ac_build_gather_values(&ctx
->ac
, values
, 2);
3357 static LLVMValueRef
lookup_interp_param(struct ac_nir_context
*ctx
,
3358 enum glsl_interp_mode interp
, unsigned location
)
3361 case INTERP_MODE_FLAT
:
3364 case INTERP_MODE_SMOOTH
:
3365 case INTERP_MODE_NONE
:
3366 if (location
== INTERP_CENTER
)
3367 return ac_get_arg(&ctx
->ac
, ctx
->args
->persp_center
);
3368 else if (location
== INTERP_CENTROID
)
3369 return ctx
->abi
->persp_centroid
;
3370 else if (location
== INTERP_SAMPLE
)
3371 return ac_get_arg(&ctx
->ac
, ctx
->args
->persp_sample
);
3373 case INTERP_MODE_NOPERSPECTIVE
:
3374 if (location
== INTERP_CENTER
)
3375 return ac_get_arg(&ctx
->ac
, ctx
->args
->linear_center
);
3376 else if (location
== INTERP_CENTROID
)
3377 return ctx
->abi
->linear_centroid
;
3378 else if (location
== INTERP_SAMPLE
)
3379 return ac_get_arg(&ctx
->ac
, ctx
->args
->linear_sample
);
3385 static LLVMValueRef
barycentric_center(struct ac_nir_context
*ctx
,
3388 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3389 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3392 static LLVMValueRef
barycentric_offset(struct ac_nir_context
*ctx
,
3394 LLVMValueRef offset
)
3396 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3397 LLVMValueRef src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_0
, ""));
3398 LLVMValueRef src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_1
, ""));
3400 LLVMValueRef ij_out
[2];
3401 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
3404 * take the I then J parameters, and the DDX/Y for it, and
3405 * calculate the IJ inputs for the interpolator.
3406 * temp1 = ddx * offset/sample.x + I;
3407 * interp_param.I = ddy * offset/sample.y + temp1;
3408 * temp1 = ddx * offset/sample.x + J;
3409 * interp_param.J = ddy * offset/sample.y + temp1;
3411 for (unsigned i
= 0; i
< 2; i
++) {
3412 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
3413 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
3414 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3415 ddxy_out
, ix_ll
, "");
3416 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3417 ddxy_out
, iy_ll
, "");
3418 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3419 interp_param
, ix_ll
, "");
3420 LLVMValueRef temp1
, temp2
;
3422 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
3425 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
3426 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
3428 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
3429 temp2
, ctx
->ac
.i32
, "");
3431 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
3432 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3435 static LLVMValueRef
barycentric_centroid(struct ac_nir_context
*ctx
,
3438 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTROID
);
3439 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3442 static LLVMValueRef
barycentric_at_sample(struct ac_nir_context
*ctx
,
3444 LLVMValueRef sample_id
)
3446 if (ctx
->abi
->interp_at_sample_force_center
)
3447 return barycentric_center(ctx
, mode
);
3449 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
3451 /* fetch sample ID */
3452 LLVMValueRef sample_pos
= ctx
->abi
->load_sample_position(ctx
->abi
, sample_id
);
3454 LLVMValueRef src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_0
, "");
3455 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
3456 LLVMValueRef src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_1
, "");
3457 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
3458 LLVMValueRef coords
[] = { src_c0
, src_c1
};
3459 LLVMValueRef offset
= ac_build_gather_values(&ctx
->ac
, coords
, 2);
3461 return barycentric_offset(ctx
, mode
, offset
);
3465 static LLVMValueRef
barycentric_sample(struct ac_nir_context
*ctx
,
3468 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_SAMPLE
);
3469 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3472 static LLVMValueRef
barycentric_model(struct ac_nir_context
*ctx
)
3474 return LLVMBuildBitCast(ctx
->ac
.builder
,
3475 ac_get_arg(&ctx
->ac
, ctx
->args
->pull_model
),
3479 static LLVMValueRef
load_interpolated_input(struct ac_nir_context
*ctx
,
3480 LLVMValueRef interp_param
,
3481 unsigned index
, unsigned comp_start
,
3482 unsigned num_components
,
3485 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3487 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
,
3488 interp_param
, ctx
->ac
.v2f32
, "");
3489 LLVMValueRef i
= LLVMBuildExtractElement(
3490 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_0
, "");
3491 LLVMValueRef j
= LLVMBuildExtractElement(
3492 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_1
, "");
3494 LLVMValueRef values
[4];
3495 assert(bitsize
== 16 || bitsize
== 32);
3496 for (unsigned comp
= 0; comp
< num_components
; comp
++) {
3497 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, comp_start
+ comp
, false);
3498 if (bitsize
== 16) {
3499 values
[comp
] = ac_build_fs_interp_f16(&ctx
->ac
, llvm_chan
, attr_number
,
3500 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
), i
, j
);
3502 values
[comp
] = ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3503 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
), i
, j
);
3507 return ac_to_integer(&ctx
->ac
, ac_build_gather_values(&ctx
->ac
, values
, num_components
));
3510 static LLVMValueRef
load_input(struct ac_nir_context
*ctx
,
3511 nir_intrinsic_instr
*instr
)
3513 unsigned offset_idx
= instr
->intrinsic
== nir_intrinsic_load_input
? 0 : 1;
3515 /* We only lower inputs for fragment shaders ATM */
3516 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[offset_idx
]);
3518 assert(offset
[0].i32
== 0);
3520 unsigned component
= nir_intrinsic_component(instr
);
3521 unsigned index
= nir_intrinsic_base(instr
);
3522 unsigned vertex_id
= 2; /* P0 */
3524 if (instr
->intrinsic
== nir_intrinsic_load_input_vertex
) {
3525 nir_const_value
*src0
= nir_src_as_const_value(instr
->src
[0]);
3527 switch (src0
[0].i32
) {
3538 unreachable("Invalid vertex index");
3542 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3543 LLVMValueRef values
[8];
3545 /* Each component of a 64-bit value takes up two GL-level channels. */
3546 unsigned num_components
= instr
->dest
.ssa
.num_components
;
3547 unsigned bit_size
= instr
->dest
.ssa
.bit_size
;
3549 bit_size
== 64 ? num_components
* 2 : num_components
;
3551 for (unsigned chan
= 0; chan
< channels
; chan
++) {
3552 if (component
+ chan
> 4)
3553 attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
+ 1, false);
3554 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, (component
+ chan
) % 4, false);
3555 values
[chan
] = ac_build_fs_interp_mov(&ctx
->ac
,
3556 LLVMConstInt(ctx
->ac
.i32
, vertex_id
, false),
3559 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
));
3560 values
[chan
] = LLVMBuildBitCast(ctx
->ac
.builder
, values
[chan
], ctx
->ac
.i32
, "");
3561 values
[chan
] = LLVMBuildTruncOrBitCast(ctx
->ac
.builder
, values
[chan
],
3562 bit_size
== 16 ? ctx
->ac
.i16
: ctx
->ac
.i32
, "");
3565 LLVMValueRef result
= ac_build_gather_values(&ctx
->ac
, values
, channels
);
3566 if (bit_size
== 64) {
3567 LLVMTypeRef type
= num_components
== 1 ? ctx
->ac
.i64
:
3568 LLVMVectorType(ctx
->ac
.i64
, num_components
);
3569 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
, type
, "");
3574 static void visit_intrinsic(struct ac_nir_context
*ctx
,
3575 nir_intrinsic_instr
*instr
)
3577 LLVMValueRef result
= NULL
;
3579 switch (instr
->intrinsic
) {
3580 case nir_intrinsic_ballot
:
3581 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3582 if (ctx
->ac
.ballot_mask_bits
> ctx
->ac
.wave_size
)
3583 result
= LLVMBuildZExt(ctx
->ac
.builder
, result
, ctx
->ac
.iN_ballotmask
, "");
3585 case nir_intrinsic_read_invocation
:
3586 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3587 get_src(ctx
, instr
->src
[1]));
3589 case nir_intrinsic_read_first_invocation
:
3590 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
3592 case nir_intrinsic_load_subgroup_invocation
:
3593 result
= ac_get_thread_id(&ctx
->ac
);
3595 case nir_intrinsic_load_work_group_id
: {
3596 LLVMValueRef values
[3];
3598 for (int i
= 0; i
< 3; i
++) {
3599 values
[i
] = ctx
->args
->workgroup_ids
[i
].used
?
3600 ac_get_arg(&ctx
->ac
, ctx
->args
->workgroup_ids
[i
]) : ctx
->ac
.i32_0
;
3603 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
3606 case nir_intrinsic_load_base_vertex
:
3607 case nir_intrinsic_load_first_vertex
:
3608 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
3610 case nir_intrinsic_load_local_group_size
:
3611 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
3613 case nir_intrinsic_load_vertex_id
:
3614 result
= LLVMBuildAdd(ctx
->ac
.builder
,
3615 ac_get_arg(&ctx
->ac
, ctx
->args
->vertex_id
),
3616 ac_get_arg(&ctx
->ac
, ctx
->args
->base_vertex
), "");
3618 case nir_intrinsic_load_vertex_id_zero_base
: {
3619 result
= ctx
->abi
->vertex_id
;
3622 case nir_intrinsic_load_local_invocation_id
: {
3623 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->local_invocation_ids
);
3626 case nir_intrinsic_load_base_instance
:
3627 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->start_instance
);
3629 case nir_intrinsic_load_draw_id
:
3630 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->draw_id
);
3632 case nir_intrinsic_load_view_index
:
3633 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->view_index
);
3635 case nir_intrinsic_load_invocation_id
:
3636 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3637 result
= ac_unpack_param(&ctx
->ac
,
3638 ac_get_arg(&ctx
->ac
, ctx
->args
->tcs_rel_ids
),
3641 if (ctx
->ac
.chip_class
>= GFX10
) {
3642 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3643 ac_get_arg(&ctx
->ac
, ctx
->args
->gs_invocation_id
),
3644 LLVMConstInt(ctx
->ac
.i32
, 127, 0), "");
3646 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->gs_invocation_id
);
3650 case nir_intrinsic_load_primitive_id
:
3651 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3652 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->gs_prim_id
);
3653 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3654 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->tcs_patch_id
);
3655 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3656 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->tes_patch_id
);
3658 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3660 case nir_intrinsic_load_sample_id
:
3661 result
= ac_unpack_param(&ctx
->ac
,
3662 ac_get_arg(&ctx
->ac
, ctx
->args
->ancillary
),
3665 case nir_intrinsic_load_sample_pos
:
3666 result
= load_sample_pos(ctx
);
3668 case nir_intrinsic_load_sample_mask_in
:
3669 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3671 case nir_intrinsic_load_frag_coord
: {
3672 LLVMValueRef values
[4] = {
3673 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[0]),
3674 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[1]),
3675 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[2]),
3676 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
,
3677 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[3]))
3679 result
= ac_to_integer(&ctx
->ac
,
3680 ac_build_gather_values(&ctx
->ac
, values
, 4));
3683 case nir_intrinsic_load_layer_id
:
3684 result
= ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)];
3686 case nir_intrinsic_load_front_face
:
3687 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->front_face
);
3689 case nir_intrinsic_load_helper_invocation
:
3690 result
= ac_build_load_helper_invocation(&ctx
->ac
);
3692 case nir_intrinsic_is_helper_invocation
:
3693 result
= ac_build_is_helper_invocation(&ctx
->ac
);
3695 case nir_intrinsic_load_color0
:
3696 result
= ctx
->abi
->color0
;
3698 case nir_intrinsic_load_color1
:
3699 result
= ctx
->abi
->color1
;
3701 case nir_intrinsic_load_user_data_amd
:
3702 assert(LLVMTypeOf(ctx
->abi
->user_data
) == ctx
->ac
.v4i32
);
3703 result
= ctx
->abi
->user_data
;
3705 case nir_intrinsic_load_instance_id
:
3706 result
= ctx
->abi
->instance_id
;
3708 case nir_intrinsic_load_num_work_groups
:
3709 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->num_work_groups
);
3711 case nir_intrinsic_load_local_invocation_index
:
3712 result
= visit_load_local_invocation_index(ctx
);
3714 case nir_intrinsic_load_subgroup_id
:
3715 result
= visit_load_subgroup_id(ctx
);
3717 case nir_intrinsic_load_num_subgroups
:
3718 result
= visit_load_num_subgroups(ctx
);
3720 case nir_intrinsic_first_invocation
:
3721 result
= visit_first_invocation(ctx
);
3723 case nir_intrinsic_load_push_constant
:
3724 result
= visit_load_push_constant(ctx
, instr
);
3726 case nir_intrinsic_vulkan_resource_index
: {
3727 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3728 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3729 unsigned binding
= nir_intrinsic_binding(instr
);
3731 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3735 case nir_intrinsic_vulkan_resource_reindex
:
3736 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3738 case nir_intrinsic_store_ssbo
:
3739 visit_store_ssbo(ctx
, instr
);
3741 case nir_intrinsic_load_ssbo
:
3742 result
= visit_load_buffer(ctx
, instr
);
3744 case nir_intrinsic_ssbo_atomic_add
:
3745 case nir_intrinsic_ssbo_atomic_imin
:
3746 case nir_intrinsic_ssbo_atomic_umin
:
3747 case nir_intrinsic_ssbo_atomic_imax
:
3748 case nir_intrinsic_ssbo_atomic_umax
:
3749 case nir_intrinsic_ssbo_atomic_and
:
3750 case nir_intrinsic_ssbo_atomic_or
:
3751 case nir_intrinsic_ssbo_atomic_xor
:
3752 case nir_intrinsic_ssbo_atomic_exchange
:
3753 case nir_intrinsic_ssbo_atomic_comp_swap
:
3754 result
= visit_atomic_ssbo(ctx
, instr
);
3756 case nir_intrinsic_load_ubo
:
3757 result
= visit_load_ubo_buffer(ctx
, instr
);
3759 case nir_intrinsic_get_buffer_size
:
3760 result
= visit_get_buffer_size(ctx
, instr
);
3762 case nir_intrinsic_load_deref
:
3763 result
= visit_load_var(ctx
, instr
);
3765 case nir_intrinsic_store_deref
:
3766 visit_store_var(ctx
, instr
);
3768 case nir_intrinsic_load_shared
:
3769 result
= visit_load_shared(ctx
, instr
);
3771 case nir_intrinsic_store_shared
:
3772 visit_store_shared(ctx
, instr
);
3774 case nir_intrinsic_bindless_image_samples
:
3775 case nir_intrinsic_image_deref_samples
:
3776 result
= visit_image_samples(ctx
, instr
);
3778 case nir_intrinsic_bindless_image_load
:
3779 result
= visit_image_load(ctx
, instr
, true);
3781 case nir_intrinsic_image_deref_load
:
3782 result
= visit_image_load(ctx
, instr
, false);
3784 case nir_intrinsic_bindless_image_store
:
3785 visit_image_store(ctx
, instr
, true);
3787 case nir_intrinsic_image_deref_store
:
3788 visit_image_store(ctx
, instr
, false);
3790 case nir_intrinsic_bindless_image_atomic_add
:
3791 case nir_intrinsic_bindless_image_atomic_imin
:
3792 case nir_intrinsic_bindless_image_atomic_umin
:
3793 case nir_intrinsic_bindless_image_atomic_imax
:
3794 case nir_intrinsic_bindless_image_atomic_umax
:
3795 case nir_intrinsic_bindless_image_atomic_and
:
3796 case nir_intrinsic_bindless_image_atomic_or
:
3797 case nir_intrinsic_bindless_image_atomic_xor
:
3798 case nir_intrinsic_bindless_image_atomic_exchange
:
3799 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3800 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
3801 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
3802 result
= visit_image_atomic(ctx
, instr
, true);
3804 case nir_intrinsic_image_deref_atomic_add
:
3805 case nir_intrinsic_image_deref_atomic_imin
:
3806 case nir_intrinsic_image_deref_atomic_umin
:
3807 case nir_intrinsic_image_deref_atomic_imax
:
3808 case nir_intrinsic_image_deref_atomic_umax
:
3809 case nir_intrinsic_image_deref_atomic_and
:
3810 case nir_intrinsic_image_deref_atomic_or
:
3811 case nir_intrinsic_image_deref_atomic_xor
:
3812 case nir_intrinsic_image_deref_atomic_exchange
:
3813 case nir_intrinsic_image_deref_atomic_comp_swap
:
3814 case nir_intrinsic_image_deref_atomic_inc_wrap
:
3815 case nir_intrinsic_image_deref_atomic_dec_wrap
:
3816 result
= visit_image_atomic(ctx
, instr
, false);
3818 case nir_intrinsic_bindless_image_size
:
3819 result
= visit_image_size(ctx
, instr
, true);
3821 case nir_intrinsic_image_deref_size
:
3822 result
= visit_image_size(ctx
, instr
, false);
3824 case nir_intrinsic_shader_clock
:
3825 result
= ac_build_shader_clock(&ctx
->ac
);
3827 case nir_intrinsic_discard
:
3828 case nir_intrinsic_discard_if
:
3829 emit_discard(ctx
, instr
);
3831 case nir_intrinsic_demote
:
3832 case nir_intrinsic_demote_if
:
3833 emit_demote(ctx
, instr
);
3835 case nir_intrinsic_memory_barrier
:
3836 case nir_intrinsic_group_memory_barrier
:
3837 case nir_intrinsic_memory_barrier_buffer
:
3838 case nir_intrinsic_memory_barrier_image
:
3839 case nir_intrinsic_memory_barrier_shared
:
3840 emit_membar(&ctx
->ac
, instr
);
3842 case nir_intrinsic_memory_barrier_tcs_patch
:
3844 case nir_intrinsic_control_barrier
:
3845 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
3847 case nir_intrinsic_shared_atomic_add
:
3848 case nir_intrinsic_shared_atomic_imin
:
3849 case nir_intrinsic_shared_atomic_umin
:
3850 case nir_intrinsic_shared_atomic_imax
:
3851 case nir_intrinsic_shared_atomic_umax
:
3852 case nir_intrinsic_shared_atomic_and
:
3853 case nir_intrinsic_shared_atomic_or
:
3854 case nir_intrinsic_shared_atomic_xor
:
3855 case nir_intrinsic_shared_atomic_exchange
:
3856 case nir_intrinsic_shared_atomic_comp_swap
: {
3857 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0],
3858 instr
->src
[1].ssa
->bit_size
);
3859 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3862 case nir_intrinsic_deref_atomic_add
:
3863 case nir_intrinsic_deref_atomic_imin
:
3864 case nir_intrinsic_deref_atomic_umin
:
3865 case nir_intrinsic_deref_atomic_imax
:
3866 case nir_intrinsic_deref_atomic_umax
:
3867 case nir_intrinsic_deref_atomic_and
:
3868 case nir_intrinsic_deref_atomic_or
:
3869 case nir_intrinsic_deref_atomic_xor
:
3870 case nir_intrinsic_deref_atomic_exchange
:
3871 case nir_intrinsic_deref_atomic_comp_swap
: {
3872 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
3873 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3876 case nir_intrinsic_load_barycentric_pixel
:
3877 result
= barycentric_center(ctx
, nir_intrinsic_interp_mode(instr
));
3879 case nir_intrinsic_load_barycentric_centroid
:
3880 result
= barycentric_centroid(ctx
, nir_intrinsic_interp_mode(instr
));
3882 case nir_intrinsic_load_barycentric_sample
:
3883 result
= barycentric_sample(ctx
, nir_intrinsic_interp_mode(instr
));
3885 case nir_intrinsic_load_barycentric_model
:
3886 result
= barycentric_model(ctx
);
3888 case nir_intrinsic_load_barycentric_at_offset
: {
3889 LLVMValueRef offset
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3890 result
= barycentric_offset(ctx
, nir_intrinsic_interp_mode(instr
), offset
);
3893 case nir_intrinsic_load_barycentric_at_sample
: {
3894 LLVMValueRef sample_id
= get_src(ctx
, instr
->src
[0]);
3895 result
= barycentric_at_sample(ctx
, nir_intrinsic_interp_mode(instr
), sample_id
);
3898 case nir_intrinsic_load_interpolated_input
: {
3899 /* We assume any indirect loads have been lowered away */
3900 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[1]);
3902 assert(offset
[0].i32
== 0);
3904 LLVMValueRef interp_param
= get_src(ctx
, instr
->src
[0]);
3905 unsigned index
= nir_intrinsic_base(instr
);
3906 unsigned component
= nir_intrinsic_component(instr
);
3907 result
= load_interpolated_input(ctx
, interp_param
, index
,
3909 instr
->dest
.ssa
.num_components
,
3910 instr
->dest
.ssa
.bit_size
);
3913 case nir_intrinsic_load_input
:
3914 case nir_intrinsic_load_input_vertex
:
3915 result
= load_input(ctx
, instr
);
3917 case nir_intrinsic_emit_vertex
:
3918 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
3920 case nir_intrinsic_end_primitive
:
3921 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
3923 case nir_intrinsic_load_tess_coord
:
3924 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
3926 case nir_intrinsic_load_tess_level_outer
:
3927 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, false);
3929 case nir_intrinsic_load_tess_level_inner
:
3930 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, false);
3932 case nir_intrinsic_load_tess_level_outer_default
:
3933 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, true);
3935 case nir_intrinsic_load_tess_level_inner_default
:
3936 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, true);
3938 case nir_intrinsic_load_patch_vertices_in
:
3939 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
3941 case nir_intrinsic_vote_all
: {
3942 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3943 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3946 case nir_intrinsic_vote_any
: {
3947 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3948 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3951 case nir_intrinsic_shuffle
:
3952 if (ctx
->ac
.chip_class
== GFX8
||
3953 ctx
->ac
.chip_class
== GFX9
||
3954 (ctx
->ac
.chip_class
== GFX10
&& ctx
->ac
.wave_size
== 32)) {
3955 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3956 get_src(ctx
, instr
->src
[1]));
3958 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
3959 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
3960 LLVMTypeRef type
= LLVMTypeOf(src
);
3961 struct waterfall_context wctx
;
3962 LLVMValueRef index_val
;
3964 index_val
= enter_waterfall(ctx
, &wctx
, index
, true);
3966 src
= LLVMBuildZExt(ctx
->ac
.builder
, src
,
3969 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.readlane",
3971 (LLVMValueRef
[]) { src
, index_val
}, 2,
3972 AC_FUNC_ATTR_READNONE
|
3973 AC_FUNC_ATTR_CONVERGENT
);
3975 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, type
, "");
3977 result
= exit_waterfall(ctx
, &wctx
, result
);
3980 case nir_intrinsic_reduce
:
3981 result
= ac_build_reduce(&ctx
->ac
,
3982 get_src(ctx
, instr
->src
[0]),
3983 instr
->const_index
[0],
3984 instr
->const_index
[1]);
3986 case nir_intrinsic_inclusive_scan
:
3987 result
= ac_build_inclusive_scan(&ctx
->ac
,
3988 get_src(ctx
, instr
->src
[0]),
3989 instr
->const_index
[0]);
3991 case nir_intrinsic_exclusive_scan
:
3992 result
= ac_build_exclusive_scan(&ctx
->ac
,
3993 get_src(ctx
, instr
->src
[0]),
3994 instr
->const_index
[0]);
3996 case nir_intrinsic_quad_broadcast
: {
3997 unsigned lane
= nir_src_as_uint(instr
->src
[1]);
3998 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3999 lane
, lane
, lane
, lane
);
4002 case nir_intrinsic_quad_swap_horizontal
:
4003 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
4005 case nir_intrinsic_quad_swap_vertical
:
4006 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
4008 case nir_intrinsic_quad_swap_diagonal
:
4009 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
4011 case nir_intrinsic_quad_swizzle_amd
: {
4012 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
4013 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
4014 mask
& 0x3, (mask
>> 2) & 0x3,
4015 (mask
>> 4) & 0x3, (mask
>> 6) & 0x3);
4018 case nir_intrinsic_masked_swizzle_amd
: {
4019 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
4020 result
= ac_build_ds_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), mask
);
4023 case nir_intrinsic_write_invocation_amd
:
4024 result
= ac_build_writelane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
4025 get_src(ctx
, instr
->src
[1]),
4026 get_src(ctx
, instr
->src
[2]));
4028 case nir_intrinsic_mbcnt_amd
:
4029 result
= ac_build_mbcnt(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
4031 case nir_intrinsic_load_scratch
: {
4032 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
4033 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
4035 LLVMTypeRef comp_type
=
4036 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
4037 LLVMTypeRef vec_type
=
4038 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
4039 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
4040 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
4041 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
4042 LLVMPointerType(vec_type
, addr_space
), "");
4043 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
4046 case nir_intrinsic_store_scratch
: {
4047 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
4048 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
4050 LLVMTypeRef comp_type
=
4051 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->src
[0].ssa
->bit_size
);
4052 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
4053 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
4054 LLVMPointerType(comp_type
, addr_space
), "");
4055 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
4056 unsigned wrmask
= nir_intrinsic_write_mask(instr
);
4059 u_bit_scan_consecutive_range(&wrmask
, &start
, &count
);
4061 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, start
, false);
4062 LLVMValueRef offset_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &offset
, 1, "");
4063 LLVMTypeRef vec_type
=
4064 count
== 1 ? comp_type
: LLVMVectorType(comp_type
, count
);
4065 offset_ptr
= LLVMBuildBitCast(ctx
->ac
.builder
,
4067 LLVMPointerType(vec_type
, addr_space
),
4069 LLVMValueRef offset_src
=
4070 ac_extract_components(&ctx
->ac
, src
, start
, count
);
4071 LLVMBuildStore(ctx
->ac
.builder
, offset_src
, offset_ptr
);
4075 case nir_intrinsic_load_constant
: {
4076 unsigned base
= nir_intrinsic_base(instr
);
4077 unsigned range
= nir_intrinsic_range(instr
);
4079 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
4080 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
4081 LLVMConstInt(ctx
->ac
.i32
, base
, false), "");
4083 /* Clamp the offset to avoid out-of-bound access because global
4084 * instructions can't handle them.
4086 LLVMValueRef size
= LLVMConstInt(ctx
->ac
.i32
, base
+ range
, false);
4087 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
,
4089 offset
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, offset
, size
, "");
4091 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->constant_data
,
4093 LLVMTypeRef comp_type
=
4094 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
4095 LLVMTypeRef vec_type
=
4096 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
4097 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
4098 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
4099 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
4100 LLVMPointerType(vec_type
, addr_space
), "");
4101 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
4105 fprintf(stderr
, "Unknown intrinsic: ");
4106 nir_print_instr(&instr
->instr
, stderr
);
4107 fprintf(stderr
, "\n");
4111 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4115 static LLVMValueRef
get_bindless_index_from_uniform(struct ac_nir_context
*ctx
,
4116 unsigned base_index
,
4117 unsigned constant_index
,
4118 LLVMValueRef dynamic_index
)
4120 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, base_index
* 4, 0);
4121 LLVMValueRef index
= LLVMBuildAdd(ctx
->ac
.builder
, dynamic_index
,
4122 LLVMConstInt(ctx
->ac
.i32
, constant_index
, 0), "");
4124 /* Bindless uniforms are 64bit so multiple index by 8 */
4125 index
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i32
, 8, 0), "");
4126 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, index
, "");
4128 LLVMValueRef ubo_index
= ctx
->abi
->load_ubo(ctx
->abi
, ctx
->ac
.i32_0
);
4130 LLVMValueRef ret
= ac_build_buffer_load(&ctx
->ac
, ubo_index
, 1, NULL
, offset
,
4131 NULL
, 0, 0, true, true);
4133 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ctx
->ac
.i32
, "");
4136 struct sampler_desc_address
{
4137 unsigned descriptor_set
;
4138 unsigned base_index
; /* binding in vulkan */
4139 unsigned constant_index
;
4140 LLVMValueRef dynamic_index
;
4145 static struct sampler_desc_address
4146 get_sampler_desc_internal(struct ac_nir_context
*ctx
,
4147 nir_deref_instr
*deref_instr
,
4148 const nir_instr
*instr
,
4151 LLVMValueRef index
= NULL
;
4152 unsigned constant_index
= 0;
4153 unsigned descriptor_set
;
4154 unsigned base_index
;
4155 bool bindless
= false;
4160 nir_intrinsic_instr
*img_instr
= nir_instr_as_intrinsic(instr
);
4163 index
= get_src(ctx
, img_instr
->src
[0]);
4165 nir_tex_instr
*tex_instr
= nir_instr_as_tex(instr
);
4166 int sampSrcIdx
= nir_tex_instr_src_index(tex_instr
,
4167 nir_tex_src_sampler_handle
);
4168 if (sampSrcIdx
!= -1) {
4171 index
= get_src(ctx
, tex_instr
->src
[sampSrcIdx
].src
);
4173 assert(tex_instr
&& !image
);
4174 base_index
= tex_instr
->sampler_index
;
4178 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
4179 if (deref_instr
->deref_type
== nir_deref_type_array
) {
4180 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
4184 if (nir_src_is_const(deref_instr
->arr
.index
)) {
4185 constant_index
+= array_size
* nir_src_as_uint(deref_instr
->arr
.index
);
4187 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
4189 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
4190 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
4195 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
4198 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
4199 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
4200 unsigned sidx
= deref_instr
->strct
.index
;
4201 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
4202 constant_index
+= glsl_get_struct_location_offset(deref_instr
->type
, sidx
);
4204 unreachable("Unsupported deref type");
4207 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
4209 if (deref_instr
->var
->data
.bindless
) {
4210 /* For now just assert on unhandled variable types */
4211 assert(deref_instr
->var
->data
.mode
== nir_var_uniform
);
4213 base_index
= deref_instr
->var
->data
.driver_location
;
4216 index
= index
? index
: ctx
->ac
.i32_0
;
4217 index
= get_bindless_index_from_uniform(ctx
, base_index
,
4218 constant_index
, index
);
4220 base_index
= deref_instr
->var
->data
.binding
;
4222 return (struct sampler_desc_address
) {
4223 .descriptor_set
= descriptor_set
,
4224 .base_index
= base_index
,
4225 .constant_index
= constant_index
,
4226 .dynamic_index
= index
,
4228 .bindless
= bindless
,
4232 /* Extract any possibly divergent index into a separate value that can be fed
4233 * into get_sampler_desc with the same arguments. */
4234 static LLVMValueRef
get_sampler_desc_index(struct ac_nir_context
*ctx
,
4235 nir_deref_instr
*deref_instr
,
4236 const nir_instr
*instr
,
4239 struct sampler_desc_address addr
= get_sampler_desc_internal(ctx
, deref_instr
, instr
, image
);
4240 return addr
.dynamic_index
;
4243 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
4244 nir_deref_instr
*deref_instr
,
4245 enum ac_descriptor_type desc_type
,
4246 const nir_instr
*instr
,
4248 bool image
, bool write
)
4250 struct sampler_desc_address addr
= get_sampler_desc_internal(ctx
, deref_instr
, instr
, image
);
4251 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
4252 addr
.descriptor_set
,
4254 addr
.constant_index
, index
,
4255 desc_type
, addr
.image
, write
, addr
.bindless
);
4258 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
4261 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
4262 * filtering manually. The driver sets img7 to a mask clearing
4263 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
4264 * s_and_b32 samp0, samp0, img7
4267 * The ANISO_OVERRIDE sampler field enables this fix in TA.
4269 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
4270 LLVMValueRef res
, LLVMValueRef samp
)
4272 LLVMBuilderRef builder
= ctx
->ac
.builder
;
4273 LLVMValueRef img7
, samp0
;
4275 if (ctx
->ac
.chip_class
>= GFX8
)
4278 img7
= LLVMBuildExtractElement(builder
, res
,
4279 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
4280 samp0
= LLVMBuildExtractElement(builder
, samp
,
4281 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
4282 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
4283 return LLVMBuildInsertElement(builder
, samp
, samp0
,
4284 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
4287 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
4288 nir_tex_instr
*instr
,
4289 struct waterfall_context
*wctx
,
4290 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
4291 LLVMValueRef
*fmask_ptr
)
4293 nir_deref_instr
*texture_deref_instr
= NULL
;
4294 nir_deref_instr
*sampler_deref_instr
= NULL
;
4297 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
4298 switch (instr
->src
[i
].src_type
) {
4299 case nir_tex_src_texture_deref
:
4300 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
4302 case nir_tex_src_sampler_deref
:
4303 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
4305 case nir_tex_src_plane
:
4306 plane
= nir_src_as_int(instr
->src
[i
].src
);
4313 LLVMValueRef texture_dynamic_index
= get_sampler_desc_index(ctx
, texture_deref_instr
,
4314 &instr
->instr
, false);
4315 if (!sampler_deref_instr
)
4316 sampler_deref_instr
= texture_deref_instr
;
4318 LLVMValueRef sampler_dynamic_index
= get_sampler_desc_index(ctx
, sampler_deref_instr
,
4319 &instr
->instr
, false);
4320 if (instr
->texture_non_uniform
)
4321 texture_dynamic_index
= enter_waterfall(ctx
, wctx
+ 0, texture_dynamic_index
, true);
4323 if (instr
->sampler_non_uniform
)
4324 sampler_dynamic_index
= enter_waterfall(ctx
, wctx
+ 1, sampler_dynamic_index
, true);
4326 enum ac_descriptor_type main_descriptor
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
? AC_DESC_BUFFER
: AC_DESC_IMAGE
;
4329 assert(instr
->op
!= nir_texop_txf_ms
&&
4330 instr
->op
!= nir_texop_samples_identical
);
4331 assert(instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
);
4333 main_descriptor
= AC_DESC_PLANE_0
+ plane
;
4336 if (instr
->op
== nir_texop_fragment_mask_fetch
) {
4337 /* The fragment mask is fetched from the compressed
4338 * multisampled surface.
4340 main_descriptor
= AC_DESC_FMASK
;
4343 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, main_descriptor
, &instr
->instr
,
4344 texture_dynamic_index
, false, false);
4347 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, &instr
->instr
,
4348 sampler_dynamic_index
, false, false);
4349 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
4350 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
4352 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
4353 instr
->op
== nir_texop_samples_identical
))
4354 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
,
4355 &instr
->instr
, texture_dynamic_index
, false, false);
4358 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
4361 coord
= ac_to_float(ctx
, coord
);
4362 coord
= ac_build_round(ctx
, coord
);
4363 coord
= ac_to_integer(ctx
, coord
);
4367 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
4369 LLVMValueRef result
= NULL
;
4370 struct ac_image_args args
= { 0 };
4371 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
4372 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
4373 unsigned offset_src
= 0;
4374 struct waterfall_context wctx
[2] = {{{0}}};
4376 tex_fetch_ptrs(ctx
, instr
, wctx
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
4378 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
4379 switch (instr
->src
[i
].src_type
) {
4380 case nir_tex_src_coord
: {
4381 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
4382 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
4383 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
4386 case nir_tex_src_projector
:
4388 case nir_tex_src_comparator
:
4389 if (instr
->is_shadow
) {
4390 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
4391 args
.compare
= ac_to_float(&ctx
->ac
, args
.compare
);
4394 case nir_tex_src_offset
:
4395 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
4398 case nir_tex_src_bias
:
4399 if (instr
->op
== nir_texop_txb
)
4400 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
4402 case nir_tex_src_lod
: {
4403 if (nir_src_is_const(instr
->src
[i
].src
) && nir_src_as_uint(instr
->src
[i
].src
) == 0)
4404 args
.level_zero
= true;
4406 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
4409 case nir_tex_src_ms_index
:
4410 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
4412 case nir_tex_src_ms_mcs
:
4414 case nir_tex_src_ddx
:
4415 ddx
= get_src(ctx
, instr
->src
[i
].src
);
4417 case nir_tex_src_ddy
:
4418 ddy
= get_src(ctx
, instr
->src
[i
].src
);
4420 case nir_tex_src_texture_offset
:
4421 case nir_tex_src_sampler_offset
:
4422 case nir_tex_src_plane
:
4428 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
4429 result
= get_buffer_size(ctx
, args
.resource
, true);
4433 if (instr
->op
== nir_texop_texture_samples
) {
4434 LLVMValueRef res
, samples
, is_msaa
;
4435 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
4436 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
4437 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4438 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4439 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
4440 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
4441 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4442 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
4443 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4445 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4446 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
4447 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
4448 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
4449 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
4451 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
4457 if (args
.offset
&& instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
4458 LLVMValueRef offset
[3], pack
;
4459 for (unsigned chan
= 0; chan
< 3; ++chan
)
4460 offset
[chan
] = ctx
->ac
.i32_0
;
4462 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
4463 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
4464 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
4465 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
4466 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
4468 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
4469 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
4471 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
4472 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
4476 /* Section 8.23.1 (Depth Texture Comparison Mode) of the
4477 * OpenGL 4.5 spec says:
4479 * "If the texture’s internal format indicates a fixed-point
4480 * depth texture, then D_t and D_ref are clamped to the
4481 * range [0, 1]; otherwise no clamping is performed."
4483 * TC-compatible HTILE promotes Z16 and Z24 to Z32_FLOAT,
4484 * so the depth comparison value isn't clamped for Z16 and
4485 * Z24 anymore. Do it manually here for GFX8-9; GFX10 has
4486 * an explicitly clamped 32-bit float format.
4489 ctx
->ac
.chip_class
>= GFX8
&&
4490 ctx
->ac
.chip_class
<= GFX9
&&
4491 ctx
->abi
->clamp_shadow_reference
) {
4492 LLVMValueRef upgraded
, clamped
;
4494 upgraded
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
.sampler
,
4495 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4496 upgraded
= LLVMBuildLShr(ctx
->ac
.builder
, upgraded
,
4497 LLVMConstInt(ctx
->ac
.i32
, 29, false), "");
4498 upgraded
= LLVMBuildTrunc(ctx
->ac
.builder
, upgraded
, ctx
->ac
.i1
, "");
4499 clamped
= ac_build_clamp(&ctx
->ac
, args
.compare
);
4500 args
.compare
= LLVMBuildSelect(ctx
->ac
.builder
, upgraded
, clamped
,
4504 /* pack derivatives */
4506 int num_src_deriv_channels
, num_dest_deriv_channels
;
4507 switch (instr
->sampler_dim
) {
4508 case GLSL_SAMPLER_DIM_3D
:
4509 case GLSL_SAMPLER_DIM_CUBE
:
4510 num_src_deriv_channels
= 3;
4511 num_dest_deriv_channels
= 3;
4513 case GLSL_SAMPLER_DIM_2D
:
4515 num_src_deriv_channels
= 2;
4516 num_dest_deriv_channels
= 2;
4518 case GLSL_SAMPLER_DIM_1D
:
4519 num_src_deriv_channels
= 1;
4520 if (ctx
->ac
.chip_class
== GFX9
) {
4521 num_dest_deriv_channels
= 2;
4523 num_dest_deriv_channels
= 1;
4528 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
4529 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
4530 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
4531 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
4532 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
4534 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
4535 args
.derivs
[i
] = ctx
->ac
.f32_0
;
4536 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
4540 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
4541 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
4542 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
4543 if (instr
->coord_components
== 3)
4544 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
4545 ac_prepare_cube_coords(&ctx
->ac
,
4546 instr
->op
== nir_texop_txd
, instr
->is_array
,
4547 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
4550 /* Texture coordinates fixups */
4551 if (instr
->coord_components
> 1 &&
4552 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4554 instr
->op
!= nir_texop_txf
) {
4555 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
4558 if (instr
->coord_components
> 2 &&
4559 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
4560 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
4561 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
4562 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
4564 instr
->op
!= nir_texop_txf
&&
4565 instr
->op
!= nir_texop_txf_ms
&&
4566 instr
->op
!= nir_texop_fragment_fetch
&&
4567 instr
->op
!= nir_texop_fragment_mask_fetch
) {
4568 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
4571 if (ctx
->ac
.chip_class
== GFX9
&&
4572 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4573 instr
->op
!= nir_texop_lod
) {
4574 LLVMValueRef filler
;
4575 if (instr
->op
== nir_texop_txf
)
4576 filler
= ctx
->ac
.i32_0
;
4578 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
4580 if (instr
->is_array
)
4581 args
.coords
[2] = args
.coords
[1];
4582 args
.coords
[1] = filler
;
4585 /* Pack sample index */
4586 if (sample_index
&& (instr
->op
== nir_texop_txf_ms
||
4587 instr
->op
== nir_texop_fragment_fetch
))
4588 args
.coords
[instr
->coord_components
] = sample_index
;
4590 if (instr
->op
== nir_texop_samples_identical
) {
4591 struct ac_image_args txf_args
= { 0 };
4592 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
4594 txf_args
.dmask
= 0xf;
4595 txf_args
.resource
= fmask_ptr
;
4596 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
4597 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
4599 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4600 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
4604 if ((instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
||
4605 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
) &&
4606 instr
->op
!= nir_texop_txs
&&
4607 instr
->op
!= nir_texop_fragment_fetch
&&
4608 instr
->op
!= nir_texop_fragment_mask_fetch
) {
4609 unsigned sample_chan
= instr
->is_array
? 3 : 2;
4610 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
4611 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
4612 instr
->is_array
? args
.coords
[2] : NULL
,
4613 args
.coords
[sample_chan
], fmask_ptr
);
4616 if (args
.offset
&& (instr
->op
== nir_texop_txf
|| instr
->op
== nir_texop_txf_ms
)) {
4617 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
4618 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
4619 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
4620 args
.coords
[i
] = LLVMBuildAdd(
4621 ctx
->ac
.builder
, args
.coords
[i
],
4622 LLVMConstInt(ctx
->ac
.i32
, nir_src_comp_as_uint(instr
->src
[offset_src
].src
, i
), false), "");
4627 /* DMASK was repurposed for GATHER4. 4 components are always
4628 * returned and DMASK works like a swizzle - it selects
4629 * the component to fetch. The only valid DMASK values are
4630 * 1=red, 2=green, 4=blue, 8=alpha. (e.g. 1 returns
4631 * (red,red,red,red) etc.) The ISA document doesn't mention
4635 if (instr
->op
== nir_texop_tg4
) {
4636 if (instr
->is_shadow
)
4639 args
.dmask
= 1 << instr
->component
;
4642 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
) {
4643 args
.dim
= ac_get_sampler_dim(ctx
->ac
.chip_class
, instr
->sampler_dim
, instr
->is_array
);
4644 args
.unorm
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
;
4647 /* Adjust the number of coordinates because we only need (x,y) for 2D
4648 * multisampled images and (x,y,layer) for 2D multisampled layered
4649 * images or for multisampled input attachments.
4651 if (instr
->op
== nir_texop_fragment_mask_fetch
) {
4652 if (args
.dim
== ac_image_2dmsaa
) {
4653 args
.dim
= ac_image_2d
;
4655 assert(args
.dim
== ac_image_2darraymsaa
);
4656 args
.dim
= ac_image_2darray
;
4660 result
= build_tex_intrinsic(ctx
, instr
, &args
);
4662 if (instr
->op
== nir_texop_query_levels
)
4663 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4664 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
4665 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
4666 instr
->op
!= nir_texop_tg4
)
4667 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4668 else if (instr
->op
== nir_texop_txs
&&
4669 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
4671 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4672 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
4673 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4674 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
4675 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
4676 } else if (ctx
->ac
.chip_class
== GFX9
&&
4677 instr
->op
== nir_texop_txs
&&
4678 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4680 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4681 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4682 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
4684 } else if (instr
->dest
.ssa
.num_components
!= 4)
4685 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
4689 assert(instr
->dest
.is_ssa
);
4690 result
= ac_to_integer(&ctx
->ac
, result
);
4692 for (int i
= ARRAY_SIZE(wctx
); --i
>= 0;) {
4693 result
= exit_waterfall(ctx
, wctx
+ i
, result
);
4696 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4700 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
4702 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
4703 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
4705 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4706 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
4709 static void visit_post_phi(struct ac_nir_context
*ctx
,
4710 nir_phi_instr
*instr
,
4711 LLVMValueRef llvm_phi
)
4713 nir_foreach_phi_src(src
, instr
) {
4714 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
4715 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
4717 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
4721 static void phi_post_pass(struct ac_nir_context
*ctx
)
4723 hash_table_foreach(ctx
->phis
, entry
) {
4724 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
4725 (LLVMValueRef
)entry
->data
);
4730 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
4731 const nir_ssa_undef_instr
*instr
)
4733 unsigned num_components
= instr
->def
.num_components
;
4734 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
4737 if (num_components
== 1)
4738 undef
= LLVMGetUndef(type
);
4740 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
4742 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
4745 static void visit_jump(struct ac_llvm_context
*ctx
,
4746 const nir_jump_instr
*instr
)
4748 switch (instr
->type
) {
4749 case nir_jump_break
:
4750 ac_build_break(ctx
);
4752 case nir_jump_continue
:
4753 ac_build_continue(ctx
);
4756 fprintf(stderr
, "Unknown NIR jump instr: ");
4757 nir_print_instr(&instr
->instr
, stderr
);
4758 fprintf(stderr
, "\n");
4764 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
4765 enum glsl_base_type type
)
4769 case GLSL_TYPE_UINT
:
4770 case GLSL_TYPE_BOOL
:
4771 case GLSL_TYPE_SUBROUTINE
:
4773 case GLSL_TYPE_INT8
:
4774 case GLSL_TYPE_UINT8
:
4776 case GLSL_TYPE_INT16
:
4777 case GLSL_TYPE_UINT16
:
4779 case GLSL_TYPE_FLOAT
:
4781 case GLSL_TYPE_FLOAT16
:
4783 case GLSL_TYPE_INT64
:
4784 case GLSL_TYPE_UINT64
:
4786 case GLSL_TYPE_DOUBLE
:
4789 unreachable("unknown GLSL type");
4794 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
4795 const struct glsl_type
*type
)
4797 if (glsl_type_is_scalar(type
)) {
4798 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
4801 if (glsl_type_is_vector(type
)) {
4802 return LLVMVectorType(
4803 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
4804 glsl_get_vector_elements(type
));
4807 if (glsl_type_is_matrix(type
)) {
4808 return LLVMArrayType(
4809 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
4810 glsl_get_matrix_columns(type
));
4813 if (glsl_type_is_array(type
)) {
4814 return LLVMArrayType(
4815 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
4816 glsl_get_length(type
));
4819 assert(glsl_type_is_struct_or_ifc(type
));
4821 LLVMTypeRef member_types
[glsl_get_length(type
)];
4823 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
4825 glsl_to_llvm_type(ac
,
4826 glsl_get_struct_field(type
, i
));
4829 return LLVMStructTypeInContext(ac
->context
, member_types
,
4830 glsl_get_length(type
), false);
4833 static void visit_deref(struct ac_nir_context
*ctx
,
4834 nir_deref_instr
*instr
)
4836 if (instr
->mode
!= nir_var_mem_shared
&&
4837 instr
->mode
!= nir_var_mem_global
)
4840 LLVMValueRef result
= NULL
;
4841 switch(instr
->deref_type
) {
4842 case nir_deref_type_var
: {
4843 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
4844 result
= entry
->data
;
4847 case nir_deref_type_struct
:
4848 if (instr
->mode
== nir_var_mem_global
) {
4849 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4850 uint64_t offset
= glsl_get_struct_field_offset(parent
->type
,
4851 instr
->strct
.index
);
4852 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4853 LLVMConstInt(ctx
->ac
.i32
, offset
, 0));
4855 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4856 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
4859 case nir_deref_type_array
:
4860 if (instr
->mode
== nir_var_mem_global
) {
4861 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4862 unsigned stride
= glsl_get_explicit_stride(parent
->type
);
4864 if ((glsl_type_is_matrix(parent
->type
) &&
4865 glsl_matrix_type_is_row_major(parent
->type
)) ||
4866 (glsl_type_is_vector(parent
->type
) && stride
== 0))
4867 stride
= type_scalar_size_bytes(parent
->type
);
4870 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4871 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4872 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4874 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4876 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4878 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4879 get_src(ctx
, instr
->arr
.index
));
4882 case nir_deref_type_ptr_as_array
:
4883 if (instr
->mode
== nir_var_mem_global
) {
4884 unsigned stride
= nir_deref_instr_ptr_as_array_stride(instr
);
4886 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4887 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4888 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4890 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4892 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4894 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4895 get_src(ctx
, instr
->arr
.index
));
4898 case nir_deref_type_cast
: {
4899 result
= get_src(ctx
, instr
->parent
);
4901 /* We can't use the structs from LLVM because the shader
4902 * specifies its own offsets. */
4903 LLVMTypeRef pointee_type
= ctx
->ac
.i8
;
4904 if (instr
->mode
== nir_var_mem_shared
)
4905 pointee_type
= glsl_to_llvm_type(&ctx
->ac
, instr
->type
);
4907 unsigned address_space
;
4909 switch(instr
->mode
) {
4910 case nir_var_mem_shared
:
4911 address_space
= AC_ADDR_SPACE_LDS
;
4913 case nir_var_mem_global
:
4914 address_space
= AC_ADDR_SPACE_GLOBAL
;
4917 unreachable("Unhandled address space");
4920 LLVMTypeRef type
= LLVMPointerType(pointee_type
, address_space
);
4922 if (LLVMTypeOf(result
) != type
) {
4923 if (LLVMGetTypeKind(LLVMTypeOf(result
)) == LLVMVectorTypeKind
) {
4924 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
,
4927 result
= LLVMBuildIntToPtr(ctx
->ac
.builder
, result
,
4934 unreachable("Unhandled deref_instr deref type");
4937 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4940 static void visit_cf_list(struct ac_nir_context
*ctx
,
4941 struct exec_list
*list
);
4943 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
4945 nir_foreach_instr(instr
, block
)
4947 switch (instr
->type
) {
4948 case nir_instr_type_alu
:
4949 visit_alu(ctx
, nir_instr_as_alu(instr
));
4951 case nir_instr_type_load_const
:
4952 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
4954 case nir_instr_type_intrinsic
:
4955 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
4957 case nir_instr_type_tex
:
4958 visit_tex(ctx
, nir_instr_as_tex(instr
));
4960 case nir_instr_type_phi
:
4961 visit_phi(ctx
, nir_instr_as_phi(instr
));
4963 case nir_instr_type_ssa_undef
:
4964 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
4966 case nir_instr_type_jump
:
4967 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
4969 case nir_instr_type_deref
:
4970 visit_deref(ctx
, nir_instr_as_deref(instr
));
4973 fprintf(stderr
, "Unknown NIR instr type: ");
4974 nir_print_instr(instr
, stderr
);
4975 fprintf(stderr
, "\n");
4980 _mesa_hash_table_insert(ctx
->defs
, block
,
4981 LLVMGetInsertBlock(ctx
->ac
.builder
));
4984 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
4986 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
4988 nir_block
*then_block
=
4989 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
4991 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
4993 visit_cf_list(ctx
, &if_stmt
->then_list
);
4995 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
4996 nir_block
*else_block
=
4997 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
4999 ac_build_else(&ctx
->ac
, else_block
->index
);
5000 visit_cf_list(ctx
, &if_stmt
->else_list
);
5003 ac_build_endif(&ctx
->ac
, then_block
->index
);
5006 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
5008 nir_block
*first_loop_block
=
5009 (nir_block
*) exec_list_get_head(&loop
->body
);
5011 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
5013 visit_cf_list(ctx
, &loop
->body
);
5015 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
5018 static void visit_cf_list(struct ac_nir_context
*ctx
,
5019 struct exec_list
*list
)
5021 foreach_list_typed(nir_cf_node
, node
, node
, list
)
5023 switch (node
->type
) {
5024 case nir_cf_node_block
:
5025 visit_block(ctx
, nir_cf_node_as_block(node
));
5028 case nir_cf_node_if
:
5029 visit_if(ctx
, nir_cf_node_as_if(node
));
5032 case nir_cf_node_loop
:
5033 visit_loop(ctx
, nir_cf_node_as_loop(node
));
5043 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
5044 struct ac_shader_abi
*abi
,
5045 struct nir_shader
*nir
,
5046 struct nir_variable
*variable
,
5047 gl_shader_stage stage
)
5049 unsigned output_loc
= variable
->data
.driver_location
/ 4;
5050 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
5052 /* tess ctrl has it's own load/store paths for outputs */
5053 if (stage
== MESA_SHADER_TESS_CTRL
)
5056 if (stage
== MESA_SHADER_VERTEX
||
5057 stage
== MESA_SHADER_TESS_EVAL
||
5058 stage
== MESA_SHADER_GEOMETRY
) {
5059 int idx
= variable
->data
.location
+ variable
->data
.index
;
5060 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
5061 int length
= nir
->info
.clip_distance_array_size
+
5062 nir
->info
.cull_distance_array_size
;
5071 bool is_16bit
= glsl_type_is_16bit(glsl_without_array(variable
->type
));
5072 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
5073 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
5074 for (unsigned chan
= 0; chan
< 4; chan
++) {
5075 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
5076 ac_build_alloca_undef(ctx
, type
, "");
5082 setup_locals(struct ac_nir_context
*ctx
,
5083 struct nir_function
*func
)
5086 ctx
->num_locals
= 0;
5087 nir_foreach_variable(variable
, &func
->impl
->locals
) {
5088 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
5089 variable
->data
.driver_location
= ctx
->num_locals
* 4;
5090 variable
->data
.location_frac
= 0;
5091 ctx
->num_locals
+= attrib_count
;
5093 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
5097 for (i
= 0; i
< ctx
->num_locals
; i
++) {
5098 for (j
= 0; j
< 4; j
++) {
5099 ctx
->locals
[i
* 4 + j
] =
5100 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
5106 setup_scratch(struct ac_nir_context
*ctx
,
5107 struct nir_shader
*shader
)
5109 if (shader
->scratch_size
== 0)
5112 ctx
->scratch
= ac_build_alloca_undef(&ctx
->ac
,
5113 LLVMArrayType(ctx
->ac
.i8
, shader
->scratch_size
),
5118 setup_constant_data(struct ac_nir_context
*ctx
,
5119 struct nir_shader
*shader
)
5121 if (!shader
->constant_data
)
5125 LLVMConstStringInContext(ctx
->ac
.context
,
5126 shader
->constant_data
,
5127 shader
->constant_data_size
,
5129 LLVMTypeRef type
= LLVMArrayType(ctx
->ac
.i8
, shader
->constant_data_size
);
5131 /* We want to put the constant data in the CONST address space so that
5132 * we can use scalar loads. However, LLVM versions before 10 put these
5133 * variables in the same section as the code, which is unacceptable
5134 * for RadeonSI as it needs to relocate all the data sections after
5135 * the code sections. See https://reviews.llvm.org/D65813.
5137 unsigned address_space
=
5138 LLVM_VERSION_MAJOR
< 10 ? AC_ADDR_SPACE_GLOBAL
: AC_ADDR_SPACE_CONST
;
5140 LLVMValueRef global
=
5141 LLVMAddGlobalInAddressSpace(ctx
->ac
.module
, type
,
5145 LLVMSetInitializer(global
, data
);
5146 LLVMSetGlobalConstant(global
, true);
5147 LLVMSetVisibility(global
, LLVMHiddenVisibility
);
5148 ctx
->constant_data
= global
;
5152 setup_shared(struct ac_nir_context
*ctx
,
5153 struct nir_shader
*nir
)
5158 LLVMTypeRef type
= LLVMArrayType(ctx
->ac
.i8
,
5159 nir
->info
.cs
.shared_size
);
5162 LLVMAddGlobalInAddressSpace(ctx
->ac
.module
, type
,
5165 LLVMSetAlignment(lds
, 64 * 1024);
5167 ctx
->ac
.lds
= LLVMBuildBitCast(ctx
->ac
.builder
, lds
,
5168 LLVMPointerType(ctx
->ac
.i8
,
5169 AC_ADDR_SPACE_LDS
), "");
5172 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
5173 const struct ac_shader_args
*args
, struct nir_shader
*nir
)
5175 struct ac_nir_context ctx
= {};
5176 struct nir_function
*func
;
5182 ctx
.stage
= nir
->info
.stage
;
5183 ctx
.info
= &nir
->info
;
5185 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
5187 nir_foreach_variable(variable
, &nir
->outputs
)
5188 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
5191 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5192 _mesa_key_pointer_equal
);
5193 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5194 _mesa_key_pointer_equal
);
5195 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5196 _mesa_key_pointer_equal
);
5198 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
5200 nir_index_ssa_defs(func
->impl
);
5201 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
5203 setup_locals(&ctx
, func
);
5204 setup_scratch(&ctx
, nir
);
5205 setup_constant_data(&ctx
, nir
);
5207 if (gl_shader_stage_is_compute(nir
->info
.stage
))
5208 setup_shared(&ctx
, nir
);
5210 if (nir
->info
.stage
== MESA_SHADER_FRAGMENT
&& nir
->info
.fs
.uses_demote
) {
5211 ctx
.ac
.postponed_kill
= ac_build_alloca_undef(&ctx
.ac
, ac
->i1
, "");
5212 /* true = don't kill. */
5213 LLVMBuildStore(ctx
.ac
.builder
, ctx
.ac
.i1true
, ctx
.ac
.postponed_kill
);
5216 visit_cf_list(&ctx
, &func
->impl
->body
);
5217 phi_post_pass(&ctx
);
5219 if (ctx
.ac
.postponed_kill
)
5220 ac_build_kill_if_false(&ctx
.ac
, LLVMBuildLoad(ctx
.ac
.builder
,
5221 ctx
.ac
.postponed_kill
, ""));
5223 if (!gl_shader_stage_is_compute(nir
->info
.stage
))
5224 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
5229 ralloc_free(ctx
.defs
);
5230 ralloc_free(ctx
.phis
);
5231 ralloc_free(ctx
.vars
);
5235 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
5237 bool progress
= false;
5239 /* Lower large variables to scratch first so that we won't bloat the
5240 * shader by generating large if ladders for them. We later lower
5241 * scratch to alloca's, assuming LLVM won't generate VGPR indexing.
5243 NIR_PASS(progress
, nir
, nir_lower_vars_to_scratch
,
5244 nir_var_function_temp
,
5246 glsl_get_natural_size_align_bytes
);
5248 /* While it would be nice not to have this flag, we are constrained
5249 * by the reality that LLVM 9.0 has buggy VGPR indexing on GFX9.
5251 bool llvm_has_working_vgpr_indexing
= chip_class
!= GFX9
;
5253 /* TODO: Indirect indexing of GS inputs is unimplemented.
5255 * TCS and TES load inputs directly from LDS or offchip memory, so
5256 * indirect indexing is trivial.
5258 nir_variable_mode indirect_mask
= 0;
5259 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
5260 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
5261 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
5262 !llvm_has_working_vgpr_indexing
)) {
5263 indirect_mask
|= nir_var_shader_in
;
5265 if (!llvm_has_working_vgpr_indexing
&&
5266 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
5267 indirect_mask
|= nir_var_shader_out
;
5269 /* TODO: We shouldn't need to do this, however LLVM isn't currently
5270 * smart enough to handle indirects without causing excess spilling
5271 * causing the gpu to hang.
5273 * See the following thread for more details of the problem:
5274 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
5276 indirect_mask
|= nir_var_function_temp
;
5278 progress
|= nir_lower_indirect_derefs(nir
, indirect_mask
);
5283 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
5285 if (intrin
->intrinsic
!= nir_intrinsic_store_deref
)
5289 nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[0]));
5291 if (var
->data
.mode
!= nir_var_shader_out
)
5294 unsigned writemask
= 0;
5295 const int location
= var
->data
.location
;
5296 unsigned first_component
= var
->data
.location_frac
;
5297 unsigned num_comps
= intrin
->dest
.ssa
.num_components
;
5299 if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
5300 writemask
= ((1 << (num_comps
+ 1)) - 1) << first_component
;
5301 else if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
5302 writemask
= (((1 << (num_comps
+ 1)) - 1) << first_component
) << 4;
5308 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
5309 unsigned *cond_block_tf_writemask
,
5310 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
5312 switch (cf_node
->type
) {
5313 case nir_cf_node_block
: {
5314 nir_block
*block
= nir_cf_node_as_block(cf_node
);
5315 nir_foreach_instr(instr
, block
) {
5316 if (instr
->type
!= nir_instr_type_intrinsic
)
5319 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
5320 if (intrin
->intrinsic
== nir_intrinsic_control_barrier
) {
5322 /* If we find a barrier in nested control flow put this in the
5323 * too hard basket. In GLSL this is not possible but it is in
5327 *tessfactors_are_def_in_all_invocs
= false;
5331 /* The following case must be prevented:
5332 * gl_TessLevelInner = ...;
5334 * if (gl_InvocationID == 1)
5335 * gl_TessLevelInner = ...;
5337 * If you consider disjoint code segments separated by barriers, each
5338 * such segment that writes tess factor channels should write the same
5339 * channels in all codepaths within that segment.
5341 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
5342 /* Accumulate the result: */
5343 *tessfactors_are_def_in_all_invocs
&=
5344 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
5346 /* Analyze the next code segment from scratch. */
5347 *upper_block_tf_writemask
= 0;
5348 *cond_block_tf_writemask
= 0;
5351 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
5356 case nir_cf_node_if
: {
5357 unsigned then_tessfactor_writemask
= 0;
5358 unsigned else_tessfactor_writemask
= 0;
5360 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
5361 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
5362 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
5363 cond_block_tf_writemask
,
5364 tessfactors_are_def_in_all_invocs
, true);
5367 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
5368 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
5369 cond_block_tf_writemask
,
5370 tessfactors_are_def_in_all_invocs
, true);
5373 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
5374 /* If both statements write the same tess factor channels,
5375 * we can say that the upper block writes them too.
5377 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
5378 else_tessfactor_writemask
;
5379 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
5380 else_tessfactor_writemask
;
5385 case nir_cf_node_loop
: {
5386 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
5387 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
5388 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
5389 cond_block_tf_writemask
,
5390 tessfactors_are_def_in_all_invocs
, true);
5396 unreachable("unknown cf node type");
5401 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
5403 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
5405 /* The pass works as follows:
5406 * If all codepaths write tess factors, we can say that all
5407 * invocations define tess factors.
5409 * Each tess factor channel is tracked separately.
5411 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
5412 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
5414 /* Initial value = true. Here the pass will accumulate results from
5415 * multiple segments surrounded by barriers. If tess factors aren't
5416 * written at all, it's a shader bug and we don't care if this will be
5419 bool tessfactors_are_def_in_all_invocs
= true;
5421 nir_foreach_function(function
, nir
) {
5422 if (function
->impl
) {
5423 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
5424 scan_tess_ctrl(node
, &main_block_tf_writemask
,
5425 &cond_block_tf_writemask
,
5426 &tessfactors_are_def_in_all_invocs
,
5432 /* Accumulate the result for the last code segment separated by a
5435 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
5436 tessfactors_are_def_in_all_invocs
&=
5437 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
5440 return tessfactors_are_def_in_all_invocs
;