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 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
692 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(src
[0]), 1.0), 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.sqrt",
838 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
839 result
= ac_build_fdiv(&ctx
->ac
, LLVMConstReal(LLVMTypeOf(result
), 1.0), result
);
841 case nir_op_frexp_exp
:
842 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
843 result
= ac_build_frexp_exp(&ctx
->ac
, src
[0],
844 ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])));
845 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) == 16)
846 result
= LLVMBuildSExt(ctx
->ac
.builder
, result
,
849 case nir_op_frexp_sig
:
850 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
851 result
= ac_build_frexp_mant(&ctx
->ac
, src
[0],
852 instr
->dest
.dest
.ssa
.bit_size
);
855 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.pow",
856 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
859 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
860 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
861 if (ctx
->ac
.chip_class
< GFX9
&&
862 instr
->dest
.dest
.ssa
.bit_size
== 32) {
863 /* Only pre-GFX9 chips do not flush denorms. */
864 result
= ac_build_canonicalize(&ctx
->ac
, result
,
865 instr
->dest
.dest
.ssa
.bit_size
);
869 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
870 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
871 if (ctx
->ac
.chip_class
< GFX9
&&
872 instr
->dest
.dest
.ssa
.bit_size
== 32) {
873 /* Only pre-GFX9 chips do not flush denorms. */
874 result
= ac_build_canonicalize(&ctx
->ac
, result
,
875 instr
->dest
.dest
.ssa
.bit_size
);
879 /* FMA is better on GFX10, because it has FMA units instead of MUL-ADD units. */
880 result
= emit_intrin_3f_param(&ctx
->ac
, ctx
->ac
.chip_class
>= GFX10
? "llvm.fma" : "llvm.fmuladd",
881 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1], src
[2]);
884 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
885 if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 32)
886 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f32", ctx
->ac
.f32
, src
, 2, AC_FUNC_ATTR_READNONE
);
887 else if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 16)
888 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f16", ctx
->ac
.f16
, src
, 2, AC_FUNC_ATTR_READNONE
);
890 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f64", ctx
->ac
.f64
, src
, 2, AC_FUNC_ATTR_READNONE
);
893 result
= emit_bfm(&ctx
->ac
, src
[0], src
[1]);
895 case nir_op_bitfield_select
:
896 result
= emit_bitfield_select(&ctx
->ac
, src
[0], src
[1], src
[2]);
899 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], false);
902 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], true);
904 case nir_op_bitfield_reverse
:
905 result
= ac_build_bitfield_reverse(&ctx
->ac
, src
[0]);
907 case nir_op_bit_count
:
908 result
= ac_build_bit_count(&ctx
->ac
, src
[0]);
913 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
914 src
[i
] = ac_to_integer(&ctx
->ac
, src
[i
]);
915 result
= ac_build_gather_values(&ctx
->ac
, src
, num_components
);
921 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
922 result
= LLVMBuildFPToSI(ctx
->ac
.builder
, src
[0], def_type
, "");
928 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
929 result
= LLVMBuildFPToUI(ctx
->ac
.builder
, src
[0], def_type
, "");
934 result
= LLVMBuildSIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
939 result
= LLVMBuildUIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
941 case nir_op_f2f16_rtz
:
942 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
943 if (LLVMTypeOf(src
[0]) == ctx
->ac
.f64
)
944 src
[0] = LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ctx
->ac
.f32
, "");
945 LLVMValueRef param
[2] = { src
[0], ctx
->ac
.f32_0
};
946 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, param
);
947 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
949 case nir_op_f2f16_rtne
:
953 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
954 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
955 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
957 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
963 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
964 result
= LLVMBuildZExt(ctx
->ac
.builder
, src
[0], def_type
, "");
966 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
972 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
973 result
= LLVMBuildSExt(ctx
->ac
.builder
, src
[0], def_type
, "");
975 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
978 result
= emit_bcsel(&ctx
->ac
, src
[0], src
[1], src
[2]);
980 case nir_op_find_lsb
:
981 result
= ac_find_lsb(&ctx
->ac
, ctx
->ac
.i32
, src
[0]);
983 case nir_op_ufind_msb
:
984 result
= ac_build_umsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
986 case nir_op_ifind_msb
:
987 result
= ac_build_imsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
989 case nir_op_uadd_carry
:
990 result
= emit_uint_carry(&ctx
->ac
, "llvm.uadd.with.overflow.i32", src
[0], src
[1]);
992 case nir_op_usub_borrow
:
993 result
= emit_uint_carry(&ctx
->ac
, "llvm.usub.with.overflow.i32", src
[0], src
[1]);
998 result
= emit_b2f(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
1001 result
= emit_f2b(&ctx
->ac
, src
[0]);
1007 result
= emit_b2i(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
1010 result
= emit_i2b(&ctx
->ac
, src
[0]);
1012 case nir_op_fquantize2f16
:
1013 result
= emit_f2f16(&ctx
->ac
, src
[0]);
1015 case nir_op_umul_high
:
1016 result
= emit_umul_high(&ctx
->ac
, src
[0], src
[1]);
1018 case nir_op_imul_high
:
1019 result
= emit_imul_high(&ctx
->ac
, src
[0], src
[1]);
1021 case nir_op_pack_half_2x16
:
1022 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pkrtz_f16
);
1024 case nir_op_pack_snorm_2x16
:
1025 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_i16
);
1027 case nir_op_pack_unorm_2x16
:
1028 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_u16
);
1030 case nir_op_unpack_half_2x16
:
1031 result
= emit_unpack_half_2x16(&ctx
->ac
, src
[0]);
1035 case nir_op_fddx_fine
:
1036 case nir_op_fddy_fine
:
1037 case nir_op_fddx_coarse
:
1038 case nir_op_fddy_coarse
:
1039 result
= emit_ddxy(ctx
, instr
->op
, src
[0]);
1042 case nir_op_unpack_64_2x32_split_x
: {
1043 assert(ac_get_llvm_num_components(src
[0]) == 1);
1044 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1047 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1052 case nir_op_unpack_64_2x32_split_y
: {
1053 assert(ac_get_llvm_num_components(src
[0]) == 1);
1054 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1057 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1062 case nir_op_pack_64_2x32_split
: {
1063 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
1064 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i64
, "");
1068 case nir_op_pack_32_2x16_split
: {
1069 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
1070 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
1074 case nir_op_unpack_32_2x16_split_x
: {
1075 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1078 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1083 case nir_op_unpack_32_2x16_split_y
: {
1084 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1087 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1092 case nir_op_cube_face_coord
: {
1093 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1094 LLVMValueRef results
[2];
1096 for (unsigned chan
= 0; chan
< 3; chan
++)
1097 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1098 results
[0] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubesc",
1099 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1100 results
[1] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubetc",
1101 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1102 LLVMValueRef ma
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubema",
1103 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1104 results
[0] = ac_build_fdiv(&ctx
->ac
, results
[0], ma
);
1105 results
[1] = ac_build_fdiv(&ctx
->ac
, results
[1], ma
);
1106 LLVMValueRef offset
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
1107 results
[0] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[0], offset
, "");
1108 results
[1] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[1], offset
, "");
1109 result
= ac_build_gather_values(&ctx
->ac
, results
, 2);
1113 case nir_op_cube_face_index
: {
1114 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1116 for (unsigned chan
= 0; chan
< 3; chan
++)
1117 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1118 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubeid",
1119 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1124 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1125 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1126 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1127 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1130 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1131 result
= ac_build_umin(&ctx
->ac
, result
, src
[2]);
1134 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1135 result
= ac_build_imin(&ctx
->ac
, result
, src
[2]);
1138 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1139 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1140 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1141 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1144 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1145 result
= ac_build_umax(&ctx
->ac
, result
, src
[2]);
1148 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1149 result
= ac_build_imax(&ctx
->ac
, result
, src
[2]);
1151 case nir_op_fmed3
: {
1152 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1153 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
1154 src
[2] = ac_to_float(&ctx
->ac
, src
[2]);
1155 result
= ac_build_fmed3(&ctx
->ac
, src
[0], src
[1], src
[2],
1156 instr
->dest
.dest
.ssa
.bit_size
);
1159 case nir_op_imed3
: {
1160 LLVMValueRef tmp1
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1161 LLVMValueRef tmp2
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1162 tmp2
= ac_build_imin(&ctx
->ac
, tmp2
, src
[2]);
1163 result
= ac_build_imax(&ctx
->ac
, tmp1
, tmp2
);
1166 case nir_op_umed3
: {
1167 LLVMValueRef tmp1
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1168 LLVMValueRef tmp2
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1169 tmp2
= ac_build_umin(&ctx
->ac
, tmp2
, src
[2]);
1170 result
= ac_build_umax(&ctx
->ac
, tmp1
, tmp2
);
1175 fprintf(stderr
, "Unknown NIR alu instr: ");
1176 nir_print_instr(&instr
->instr
, stderr
);
1177 fprintf(stderr
, "\n");
1182 assert(instr
->dest
.dest
.is_ssa
);
1183 result
= ac_to_integer_or_pointer(&ctx
->ac
, result
);
1184 ctx
->ssa_defs
[instr
->dest
.dest
.ssa
.index
] = result
;
1188 static void visit_load_const(struct ac_nir_context
*ctx
,
1189 const nir_load_const_instr
*instr
)
1191 LLVMValueRef values
[4], value
= NULL
;
1192 LLVMTypeRef element_type
=
1193 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
1195 for (unsigned i
= 0; i
< instr
->def
.num_components
; ++i
) {
1196 switch (instr
->def
.bit_size
) {
1198 values
[i
] = LLVMConstInt(element_type
,
1199 instr
->value
[i
].u8
, false);
1202 values
[i
] = LLVMConstInt(element_type
,
1203 instr
->value
[i
].u16
, false);
1206 values
[i
] = LLVMConstInt(element_type
,
1207 instr
->value
[i
].u32
, false);
1210 values
[i
] = LLVMConstInt(element_type
,
1211 instr
->value
[i
].u64
, false);
1215 "unsupported nir load_const bit_size: %d\n",
1216 instr
->def
.bit_size
);
1220 if (instr
->def
.num_components
> 1) {
1221 value
= LLVMConstVector(values
, instr
->def
.num_components
);
1225 ctx
->ssa_defs
[instr
->def
.index
] = value
;
1229 get_buffer_size(struct ac_nir_context
*ctx
, LLVMValueRef descriptor
, bool in_elements
)
1232 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1233 LLVMConstInt(ctx
->ac
.i32
, 2, false), "");
1236 if (ctx
->ac
.chip_class
== GFX8
&& in_elements
) {
1237 /* On GFX8, the descriptor contains the size in bytes,
1238 * but TXQ must return the size in elements.
1239 * The stride is always non-zero for resources using TXQ.
1241 LLVMValueRef stride
=
1242 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1244 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
,
1245 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
1246 stride
= LLVMBuildAnd(ctx
->ac
.builder
, stride
,
1247 LLVMConstInt(ctx
->ac
.i32
, 0x3fff, false), "");
1249 size
= LLVMBuildUDiv(ctx
->ac
.builder
, size
, stride
, "");
1254 /* Gather4 should follow the same rules as bilinear filtering, but the hardware
1255 * incorrectly forces nearest filtering if the texture format is integer.
1256 * The only effect it has on Gather4, which always returns 4 texels for
1257 * bilinear filtering, is that the final coordinates are off by 0.5 of
1260 * The workaround is to subtract 0.5 from the unnormalized coordinates,
1261 * or (0.5 / size) from the normalized coordinates.
1263 * However, cube textures with 8_8_8_8 data formats require a different
1264 * workaround of overriding the num format to USCALED/SSCALED. This would lose
1265 * precision in 32-bit data formats, so it needs to be applied dynamically at
1266 * runtime. In this case, return an i1 value that indicates whether the
1267 * descriptor was overridden (and hence a fixup of the sampler result is needed).
1269 static LLVMValueRef
lower_gather4_integer(struct ac_llvm_context
*ctx
,
1271 struct ac_image_args
*args
,
1272 const nir_tex_instr
*instr
)
1274 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1275 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1276 LLVMValueRef wa_8888
= NULL
;
1277 LLVMValueRef half_texel
[2];
1278 LLVMValueRef result
;
1280 assert(stype
== GLSL_TYPE_INT
|| stype
== GLSL_TYPE_UINT
);
1282 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1283 LLVMValueRef formats
;
1284 LLVMValueRef data_format
;
1285 LLVMValueRef wa_formats
;
1287 formats
= LLVMBuildExtractElement(ctx
->builder
, args
->resource
, ctx
->i32_1
, "");
1289 data_format
= LLVMBuildLShr(ctx
->builder
, formats
,
1290 LLVMConstInt(ctx
->i32
, 20, false), "");
1291 data_format
= LLVMBuildAnd(ctx
->builder
, data_format
,
1292 LLVMConstInt(ctx
->i32
, (1u << 6) - 1, false), "");
1293 wa_8888
= LLVMBuildICmp(
1294 ctx
->builder
, LLVMIntEQ
, data_format
,
1295 LLVMConstInt(ctx
->i32
, V_008F14_IMG_DATA_FORMAT_8_8_8_8
, false),
1298 uint32_t wa_num_format
=
1299 stype
== GLSL_TYPE_UINT
?
1300 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_USCALED
) :
1301 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_SSCALED
);
1302 wa_formats
= LLVMBuildAnd(ctx
->builder
, formats
,
1303 LLVMConstInt(ctx
->i32
, C_008F14_NUM_FORMAT
, false),
1305 wa_formats
= LLVMBuildOr(ctx
->builder
, wa_formats
,
1306 LLVMConstInt(ctx
->i32
, wa_num_format
, false), "");
1308 formats
= LLVMBuildSelect(ctx
->builder
, wa_8888
, wa_formats
, formats
, "");
1309 args
->resource
= LLVMBuildInsertElement(
1310 ctx
->builder
, args
->resource
, formats
, ctx
->i32_1
, "");
1313 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
) {
1315 half_texel
[0] = half_texel
[1] = LLVMConstReal(ctx
->f32
, -0.5);
1317 struct ac_image_args resinfo
= {};
1318 LLVMBasicBlockRef bbs
[2];
1320 LLVMValueRef unnorm
= NULL
;
1321 LLVMValueRef default_offset
= ctx
->f32_0
;
1322 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
&&
1324 /* In vulkan, whether the sampler uses unnormalized
1325 * coordinates or not is a dynamic property of the
1326 * sampler. Hence, to figure out whether or not we
1327 * need to divide by the texture size, we need to test
1328 * the sampler at runtime. This tests the bit set by
1329 * radv_init_sampler().
1331 LLVMValueRef sampler0
=
1332 LLVMBuildExtractElement(ctx
->builder
, args
->sampler
, ctx
->i32_0
, "");
1333 sampler0
= LLVMBuildLShr(ctx
->builder
, sampler0
,
1334 LLVMConstInt(ctx
->i32
, 15, false), "");
1335 sampler0
= LLVMBuildAnd(ctx
->builder
, sampler0
, ctx
->i32_1
, "");
1336 unnorm
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, sampler0
, ctx
->i32_1
, "");
1337 default_offset
= LLVMConstReal(ctx
->f32
, -0.5);
1340 bbs
[0] = LLVMGetInsertBlock(ctx
->builder
);
1341 if (wa_8888
|| unnorm
) {
1342 assert(!(wa_8888
&& unnorm
));
1343 LLVMValueRef not_needed
= wa_8888
? wa_8888
: unnorm
;
1344 /* Skip the texture size query entirely if we don't need it. */
1345 ac_build_ifcc(ctx
, LLVMBuildNot(ctx
->builder
, not_needed
, ""), 2000);
1346 bbs
[1] = LLVMGetInsertBlock(ctx
->builder
);
1349 /* Query the texture size. */
1350 resinfo
.dim
= ac_get_sampler_dim(ctx
->chip_class
, instr
->sampler_dim
, instr
->is_array
);
1351 resinfo
.opcode
= ac_image_get_resinfo
;
1352 resinfo
.dmask
= 0xf;
1353 resinfo
.lod
= ctx
->i32_0
;
1354 resinfo
.resource
= args
->resource
;
1355 resinfo
.attributes
= AC_FUNC_ATTR_READNONE
;
1356 LLVMValueRef size
= ac_build_image_opcode(ctx
, &resinfo
);
1358 /* Compute -0.5 / size. */
1359 for (unsigned c
= 0; c
< 2; c
++) {
1361 LLVMBuildExtractElement(ctx
->builder
, size
,
1362 LLVMConstInt(ctx
->i32
, c
, 0), "");
1363 half_texel
[c
] = LLVMBuildUIToFP(ctx
->builder
, half_texel
[c
], ctx
->f32
, "");
1364 half_texel
[c
] = ac_build_fdiv(ctx
, ctx
->f32_1
, half_texel
[c
]);
1365 half_texel
[c
] = LLVMBuildFMul(ctx
->builder
, half_texel
[c
],
1366 LLVMConstReal(ctx
->f32
, -0.5), "");
1369 if (wa_8888
|| unnorm
) {
1370 ac_build_endif(ctx
, 2000);
1372 for (unsigned c
= 0; c
< 2; c
++) {
1373 LLVMValueRef values
[2] = { default_offset
, half_texel
[c
] };
1374 half_texel
[c
] = ac_build_phi(ctx
, ctx
->f32
, 2,
1380 for (unsigned c
= 0; c
< 2; c
++) {
1382 tmp
= LLVMBuildBitCast(ctx
->builder
, args
->coords
[c
], ctx
->f32
, "");
1383 args
->coords
[c
] = LLVMBuildFAdd(ctx
->builder
, tmp
, half_texel
[c
], "");
1386 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1387 result
= ac_build_image_opcode(ctx
, args
);
1389 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1390 LLVMValueRef tmp
, tmp2
;
1392 /* if the cube workaround is in place, f2i the result. */
1393 for (unsigned c
= 0; c
< 4; c
++) {
1394 tmp
= LLVMBuildExtractElement(ctx
->builder
, result
, LLVMConstInt(ctx
->i32
, c
, false), "");
1395 if (stype
== GLSL_TYPE_UINT
)
1396 tmp2
= LLVMBuildFPToUI(ctx
->builder
, tmp
, ctx
->i32
, "");
1398 tmp2
= LLVMBuildFPToSI(ctx
->builder
, tmp
, ctx
->i32
, "");
1399 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->i32
, "");
1400 tmp2
= LLVMBuildBitCast(ctx
->builder
, tmp2
, ctx
->i32
, "");
1401 tmp
= LLVMBuildSelect(ctx
->builder
, wa_8888
, tmp2
, tmp
, "");
1402 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f32
, "");
1403 result
= LLVMBuildInsertElement(ctx
->builder
, result
, tmp
, LLVMConstInt(ctx
->i32
, c
, false), "");
1409 static nir_deref_instr
*get_tex_texture_deref(const nir_tex_instr
*instr
)
1411 nir_deref_instr
*texture_deref_instr
= NULL
;
1413 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
1414 switch (instr
->src
[i
].src_type
) {
1415 case nir_tex_src_texture_deref
:
1416 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
1422 return texture_deref_instr
;
1425 static LLVMValueRef
build_tex_intrinsic(struct ac_nir_context
*ctx
,
1426 const nir_tex_instr
*instr
,
1427 struct ac_image_args
*args
)
1429 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
1430 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
1432 return ac_build_buffer_load_format(&ctx
->ac
,
1436 util_last_bit(mask
),
1440 args
->opcode
= ac_image_sample
;
1442 switch (instr
->op
) {
1444 case nir_texop_txf_ms
:
1445 case nir_texop_samples_identical
:
1446 args
->opcode
= args
->level_zero
||
1447 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
?
1448 ac_image_load
: ac_image_load_mip
;
1449 args
->level_zero
= false;
1452 case nir_texop_query_levels
:
1453 args
->opcode
= ac_image_get_resinfo
;
1455 args
->lod
= ctx
->ac
.i32_0
;
1456 args
->level_zero
= false;
1459 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1461 args
->level_zero
= true;
1465 args
->opcode
= ac_image_gather4
;
1466 args
->level_zero
= true;
1469 args
->opcode
= ac_image_get_lod
;
1471 case nir_texop_fragment_fetch
:
1472 case nir_texop_fragment_mask_fetch
:
1473 args
->opcode
= ac_image_load
;
1474 args
->level_zero
= false;
1480 if (instr
->op
== nir_texop_tg4
&& ctx
->ac
.chip_class
<= GFX8
) {
1481 nir_deref_instr
*texture_deref_instr
= get_tex_texture_deref(instr
);
1482 nir_variable
*var
= nir_deref_instr_get_variable(texture_deref_instr
);
1483 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1484 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1485 if (stype
== GLSL_TYPE_UINT
|| stype
== GLSL_TYPE_INT
) {
1486 return lower_gather4_integer(&ctx
->ac
, var
, args
, instr
);
1490 /* Fixup for GFX9 which allocates 1D textures as 2D. */
1491 if (instr
->op
== nir_texop_lod
&& ctx
->ac
.chip_class
== GFX9
) {
1492 if ((args
->dim
== ac_image_2darray
||
1493 args
->dim
== ac_image_2d
) && !args
->coords
[1]) {
1494 args
->coords
[1] = ctx
->ac
.i32_0
;
1498 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1499 bool cs_derivs
= ctx
->stage
== MESA_SHADER_COMPUTE
&&
1500 ctx
->info
->cs
.derivative_group
!= DERIVATIVE_GROUP_NONE
;
1501 if (ctx
->stage
== MESA_SHADER_FRAGMENT
|| cs_derivs
) {
1502 /* Prevent texture instructions with implicit derivatives from being
1503 * sinked into branches. */
1504 switch (instr
->op
) {
1508 args
->attributes
|= AC_FUNC_ATTR_CONVERGENT
;
1515 return ac_build_image_opcode(&ctx
->ac
, args
);
1518 static LLVMValueRef
visit_vulkan_resource_reindex(struct ac_nir_context
*ctx
,
1519 nir_intrinsic_instr
*instr
)
1521 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
1522 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
1524 LLVMValueRef result
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
1525 LLVMSetMetadata(result
, ctx
->ac
.uniform_md_kind
, ctx
->ac
.empty_md
);
1529 static LLVMValueRef
visit_load_push_constant(struct ac_nir_context
*ctx
,
1530 nir_intrinsic_instr
*instr
)
1532 LLVMValueRef ptr
, addr
;
1533 LLVMValueRef src0
= get_src(ctx
, instr
->src
[0]);
1534 unsigned index
= nir_intrinsic_base(instr
);
1536 addr
= LLVMConstInt(ctx
->ac
.i32
, index
, 0);
1537 addr
= LLVMBuildAdd(ctx
->ac
.builder
, addr
, src0
, "");
1539 /* Load constant values from user SGPRS when possible, otherwise
1540 * fallback to the default path that loads directly from memory.
1542 if (LLVMIsConstant(src0
) &&
1543 instr
->dest
.ssa
.bit_size
== 32) {
1544 unsigned count
= instr
->dest
.ssa
.num_components
;
1545 unsigned offset
= index
;
1547 offset
+= LLVMConstIntGetZExtValue(src0
);
1550 offset
-= ctx
->args
->base_inline_push_consts
;
1552 unsigned num_inline_push_consts
= ctx
->args
->num_inline_push_consts
;
1553 if (offset
+ count
<= num_inline_push_consts
) {
1554 LLVMValueRef push_constants
[num_inline_push_consts
];
1555 for (unsigned i
= 0; i
< num_inline_push_consts
; i
++)
1556 push_constants
[i
] = ac_get_arg(&ctx
->ac
,
1557 ctx
->args
->inline_push_consts
[i
]);
1558 return ac_build_gather_values(&ctx
->ac
,
1559 push_constants
+ offset
,
1564 ptr
= LLVMBuildGEP(ctx
->ac
.builder
,
1565 ac_get_arg(&ctx
->ac
, ctx
->args
->push_constants
), &addr
, 1, "");
1567 if (instr
->dest
.ssa
.bit_size
== 8) {
1568 unsigned load_dwords
= instr
->dest
.ssa
.num_components
> 1 ? 2 : 1;
1569 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), 4 * load_dwords
);
1570 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1571 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1573 LLVMValueRef params
[3];
1574 if (load_dwords
> 1) {
1575 LLVMValueRef res_vec
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(ctx
->ac
.i32
, 2), "");
1576 params
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
1577 params
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 0, false), "");
1579 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, ctx
->ac
.i32
, "");
1580 params
[0] = ctx
->ac
.i32_0
;
1584 res
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.alignbyte", ctx
->ac
.i32
, params
, 3, 0);
1586 res
= LLVMBuildTrunc(ctx
->ac
.builder
, res
, LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.num_components
* 8), "");
1587 if (instr
->dest
.ssa
.num_components
> 1)
1588 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(LLVMInt8TypeInContext(ctx
->ac
.context
), instr
->dest
.ssa
.num_components
), "");
1590 } else if (instr
->dest
.ssa
.bit_size
== 16) {
1591 unsigned load_dwords
= instr
->dest
.ssa
.num_components
/ 2 + 1;
1592 LLVMTypeRef vec_type
= LLVMVectorType(LLVMInt16TypeInContext(ctx
->ac
.context
), 2 * load_dwords
);
1593 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1594 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1595 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, vec_type
, "");
1596 LLVMValueRef cond
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, ctx
->ac
.i32_1
, "");
1597 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->ac
.i1
, "");
1598 LLVMValueRef mask
[] = { LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
1599 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
1600 LLVMConstInt(ctx
->ac
.i32
, 4, false)};
1601 LLVMValueRef swizzle_aligned
= LLVMConstVector(&mask
[0], instr
->dest
.ssa
.num_components
);
1602 LLVMValueRef swizzle_unaligned
= LLVMConstVector(&mask
[1], instr
->dest
.ssa
.num_components
);
1603 LLVMValueRef shuffle_aligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_aligned
, "");
1604 LLVMValueRef shuffle_unaligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_unaligned
, "");
1605 res
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, shuffle_unaligned
, shuffle_aligned
, "");
1606 return LLVMBuildBitCast(ctx
->ac
.builder
, res
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1609 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, get_def_type(ctx
, &instr
->dest
.ssa
));
1611 return LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1614 static LLVMValueRef
visit_get_buffer_size(struct ac_nir_context
*ctx
,
1615 const nir_intrinsic_instr
*instr
)
1617 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
1619 return get_buffer_size(ctx
, ctx
->abi
->load_ssbo(ctx
->abi
, index
, false), false);
1622 static uint32_t widen_mask(uint32_t mask
, unsigned multiplier
)
1624 uint32_t new_mask
= 0;
1625 for(unsigned i
= 0; i
< 32 && (1u << i
) <= mask
; ++i
)
1626 if (mask
& (1u << i
))
1627 new_mask
|= ((1u << multiplier
) - 1u) << (i
* multiplier
);
1631 static LLVMValueRef
extract_vector_range(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
1632 unsigned start
, unsigned count
)
1634 LLVMValueRef mask
[] = {
1635 ctx
->i32_0
, ctx
->i32_1
,
1636 LLVMConstInt(ctx
->i32
, 2, false), LLVMConstInt(ctx
->i32
, 3, false) };
1638 unsigned src_elements
= ac_get_llvm_num_components(src
);
1640 if (count
== src_elements
) {
1643 } else if (count
== 1) {
1644 assert(start
< src_elements
);
1645 return LLVMBuildExtractElement(ctx
->builder
, src
, mask
[start
], "");
1647 assert(start
+ count
<= src_elements
);
1649 LLVMValueRef swizzle
= LLVMConstVector(&mask
[start
], count
);
1650 return LLVMBuildShuffleVector(ctx
->builder
, src
, src
, swizzle
, "");
1654 static unsigned get_cache_policy(struct ac_nir_context
*ctx
,
1655 enum gl_access_qualifier access
,
1656 bool may_store_unaligned
,
1657 bool writeonly_memory
)
1659 unsigned cache_policy
= 0;
1661 /* GFX6 has a TC L1 bug causing corruption of 8bit/16bit stores. All
1662 * store opcodes not aligned to a dword are affected. The only way to
1663 * get unaligned stores is through shader images.
1665 if (((may_store_unaligned
&& ctx
->ac
.chip_class
== GFX6
) ||
1666 /* If this is write-only, don't keep data in L1 to prevent
1667 * evicting L1 cache lines that may be needed by other
1671 access
& (ACCESS_COHERENT
| ACCESS_VOLATILE
))) {
1672 cache_policy
|= ac_glc
;
1675 if (access
& ACCESS_STREAM_CACHE_POLICY
)
1676 cache_policy
|= ac_slc
;
1678 return cache_policy
;
1681 static LLVMValueRef
enter_waterfall_ssbo(struct ac_nir_context
*ctx
,
1682 struct waterfall_context
*wctx
,
1683 const nir_intrinsic_instr
*instr
,
1686 return enter_waterfall(ctx
, wctx
, get_src(ctx
, src
),
1687 nir_intrinsic_access(instr
) & ACCESS_NON_UNIFORM
);
1690 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1691 nir_intrinsic_instr
*instr
)
1693 if (ctx
->ac
.postponed_kill
) {
1694 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
1695 ctx
->ac
.postponed_kill
, "");
1696 ac_build_ifcc(&ctx
->ac
, cond
, 7000);
1699 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1700 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1701 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1702 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1703 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
1704 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, writeonly_memory
);
1706 struct waterfall_context wctx
;
1707 LLVMValueRef rsrc_base
= enter_waterfall_ssbo(ctx
, &wctx
, instr
, instr
->src
[1]);
1709 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
, rsrc_base
, true);
1710 LLVMValueRef base_data
= src_data
;
1711 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1712 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1716 LLVMValueRef data
, offset
;
1717 LLVMTypeRef data_type
;
1719 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1721 /* Due to an LLVM limitation with LLVM < 9, split 3-element
1722 * writes into a 2-element and a 1-element write. */
1724 (elem_size_bytes
!= 4 || !ac_has_vec3_support(ctx
->ac
.chip_class
, false))) {
1725 writemask
|= 1 << (start
+ 2);
1728 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1730 /* we can only store 4 DWords at the same time.
1731 * can only happen for 64 Bit vectors. */
1732 if (num_bytes
> 16) {
1733 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1738 /* check alignment of 16 Bit stores */
1739 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1740 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1744 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1746 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1747 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1749 if (num_bytes
== 1) {
1750 ac_build_tbuffer_store_byte(&ctx
->ac
, rsrc
, data
,
1751 offset
, ctx
->ac
.i32_0
,
1753 } else if (num_bytes
== 2) {
1754 ac_build_tbuffer_store_short(&ctx
->ac
, rsrc
, data
,
1755 offset
, ctx
->ac
.i32_0
,
1758 int num_channels
= num_bytes
/ 4;
1760 switch (num_bytes
) {
1761 case 16: /* v4f32 */
1762 data_type
= ctx
->ac
.v4f32
;
1764 case 12: /* v3f32 */
1765 data_type
= ctx
->ac
.v3f32
;
1768 data_type
= ctx
->ac
.v2f32
;
1771 data_type
= ctx
->ac
.f32
;
1774 unreachable("Malformed vector store.");
1776 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1778 ac_build_buffer_store_dword(&ctx
->ac
, rsrc
, data
,
1779 num_channels
, offset
,
1785 exit_waterfall(ctx
, &wctx
, NULL
);
1787 if (ctx
->ac
.postponed_kill
)
1788 ac_build_endif(&ctx
->ac
, 7000);
1791 static LLVMValueRef
emit_ssbo_comp_swap_64(struct ac_nir_context
*ctx
,
1792 LLVMValueRef descriptor
,
1793 LLVMValueRef offset
,
1794 LLVMValueRef compare
,
1795 LLVMValueRef exchange
)
1797 LLVMBasicBlockRef start_block
= NULL
, then_block
= NULL
;
1798 if (ctx
->abi
->robust_buffer_access
) {
1799 LLVMValueRef size
= ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 2);
1801 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
, offset
, size
, "");
1802 start_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1804 ac_build_ifcc(&ctx
->ac
, cond
, -1);
1806 then_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1809 LLVMValueRef ptr_parts
[2] = {
1810 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 0),
1811 LLVMBuildAnd(ctx
->ac
.builder
,
1812 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 1),
1813 LLVMConstInt(ctx
->ac
.i32
, 65535, 0), "")
1816 ptr_parts
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i16
, "");
1817 ptr_parts
[1] = LLVMBuildSExt(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i32
, "");
1819 offset
= LLVMBuildZExt(ctx
->ac
.builder
, offset
, ctx
->ac
.i64
, "");
1821 LLVMValueRef ptr
= ac_build_gather_values(&ctx
->ac
, ptr_parts
, 2);
1822 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ctx
->ac
.i64
, "");
1823 ptr
= LLVMBuildAdd(ctx
->ac
.builder
, ptr
, offset
, "");
1824 ptr
= LLVMBuildIntToPtr(ctx
->ac
.builder
, ptr
, LLVMPointerType(ctx
->ac
.i64
, AC_ADDR_SPACE_GLOBAL
), "");
1826 LLVMValueRef result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, compare
, exchange
, "singlethread-one-as");
1827 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
1829 if (ctx
->abi
->robust_buffer_access
) {
1830 ac_build_endif(&ctx
->ac
, -1);
1832 LLVMBasicBlockRef incoming_blocks
[2] = {
1837 LLVMValueRef incoming_values
[2] = {
1838 LLVMConstInt(ctx
->ac
.i64
, 0, 0),
1841 LLVMValueRef ret
= LLVMBuildPhi(ctx
->ac
.builder
, ctx
->ac
.i64
, "");
1842 LLVMAddIncoming(ret
, incoming_values
, incoming_blocks
, 2);
1849 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1850 nir_intrinsic_instr
*instr
)
1852 if (ctx
->ac
.postponed_kill
) {
1853 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
1854 ctx
->ac
.postponed_kill
, "");
1855 ac_build_ifcc(&ctx
->ac
, cond
, 7001);
1858 LLVMTypeRef return_type
= LLVMTypeOf(get_src(ctx
, instr
->src
[2]));
1860 char name
[64], type
[8];
1861 LLVMValueRef params
[6], descriptor
;
1862 LLVMValueRef result
;
1865 struct waterfall_context wctx
;
1866 LLVMValueRef rsrc_base
= enter_waterfall_ssbo(ctx
, &wctx
, instr
, instr
->src
[0]);
1868 switch (instr
->intrinsic
) {
1869 case nir_intrinsic_ssbo_atomic_add
:
1872 case nir_intrinsic_ssbo_atomic_imin
:
1875 case nir_intrinsic_ssbo_atomic_umin
:
1878 case nir_intrinsic_ssbo_atomic_imax
:
1881 case nir_intrinsic_ssbo_atomic_umax
:
1884 case nir_intrinsic_ssbo_atomic_and
:
1887 case nir_intrinsic_ssbo_atomic_or
:
1890 case nir_intrinsic_ssbo_atomic_xor
:
1893 case nir_intrinsic_ssbo_atomic_exchange
:
1896 case nir_intrinsic_ssbo_atomic_comp_swap
:
1903 descriptor
= ctx
->abi
->load_ssbo(ctx
->abi
,
1907 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
&&
1908 return_type
== ctx
->ac
.i64
) {
1909 result
= emit_ssbo_comp_swap_64(ctx
, descriptor
,
1910 get_src(ctx
, instr
->src
[1]),
1911 get_src(ctx
, instr
->src
[2]),
1912 get_src(ctx
, instr
->src
[3]));
1914 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1915 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1917 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1918 params
[arg_count
++] = descriptor
;
1920 if (LLVM_VERSION_MAJOR
>= 9) {
1921 /* XXX: The new raw/struct atomic intrinsics are buggy with
1922 * LLVM 8, see r358579.
1924 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1925 params
[arg_count
++] = ctx
->ac
.i32_0
; /* soffset */
1926 params
[arg_count
++] = ctx
->ac
.i32_0
; /* slc */
1928 ac_build_type_name_for_intr(return_type
, type
, sizeof(type
));
1929 snprintf(name
, sizeof(name
),
1930 "llvm.amdgcn.raw.buffer.atomic.%s.%s", op
, type
);
1932 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1933 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1934 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1936 assert(return_type
== ctx
->ac
.i32
);
1937 snprintf(name
, sizeof(name
),
1938 "llvm.amdgcn.buffer.atomic.%s", op
);
1941 result
= ac_build_intrinsic(&ctx
->ac
, name
, return_type
, params
,
1945 result
= exit_waterfall(ctx
, &wctx
, result
);
1946 if (ctx
->ac
.postponed_kill
)
1947 ac_build_endif(&ctx
->ac
, 7001);
1951 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
1952 nir_intrinsic_instr
*instr
)
1954 struct waterfall_context wctx
;
1955 LLVMValueRef rsrc_base
= enter_waterfall_ssbo(ctx
, &wctx
, instr
, instr
->src
[0]);
1957 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1958 int num_components
= instr
->num_components
;
1959 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1960 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, false);
1962 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1963 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
, rsrc_base
, false);
1964 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
1966 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1967 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
1969 LLVMValueRef results
[4];
1970 for (int i
= 0; i
< num_components
;) {
1971 int num_elems
= num_components
- i
;
1972 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
1974 if (num_elems
* elem_size_bytes
> 16)
1975 num_elems
= 16 / elem_size_bytes
;
1976 int load_bytes
= num_elems
* elem_size_bytes
;
1978 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
1982 if (load_bytes
== 1) {
1983 ret
= ac_build_tbuffer_load_byte(&ctx
->ac
,
1989 } else if (load_bytes
== 2) {
1990 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
1997 int num_channels
= util_next_power_of_two(load_bytes
) / 4;
1998 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2000 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_channels
,
2001 vindex
, offset
, immoffset
, 0,
2002 cache_policy
, can_speculate
, false);
2005 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
2006 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
2007 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
2009 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
2010 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
2012 for (unsigned j
= 0; j
< num_elems
; j
++) {
2013 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
2018 LLVMValueRef ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
2019 return exit_waterfall(ctx
, &wctx
, ret
);
2022 static LLVMValueRef
enter_waterfall_ubo(struct ac_nir_context
*ctx
,
2023 struct waterfall_context
*wctx
,
2024 const nir_intrinsic_instr
*instr
)
2026 return enter_waterfall(ctx
, wctx
, get_src(ctx
, instr
->src
[0]),
2027 nir_intrinsic_access(instr
) & ACCESS_NON_UNIFORM
);
2030 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
2031 nir_intrinsic_instr
*instr
)
2033 struct waterfall_context wctx
;
2034 LLVMValueRef rsrc_base
= enter_waterfall_ubo(ctx
, &wctx
, instr
);
2037 LLVMValueRef rsrc
= rsrc_base
;
2038 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
2039 int num_components
= instr
->num_components
;
2041 if (ctx
->abi
->load_ubo
)
2042 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
2044 if (instr
->dest
.ssa
.bit_size
== 64)
2045 num_components
*= 2;
2047 if (instr
->dest
.ssa
.bit_size
== 16 || instr
->dest
.ssa
.bit_size
== 8) {
2048 unsigned load_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
2049 LLVMValueRef results
[num_components
];
2050 for (unsigned i
= 0; i
< num_components
; ++i
) {
2051 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
,
2054 if (load_bytes
== 1) {
2055 results
[i
] = ac_build_tbuffer_load_byte(&ctx
->ac
,
2062 assert(load_bytes
== 2);
2063 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
2071 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
2073 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
2074 NULL
, 0, 0, true, true);
2076 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
2079 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
2080 get_def_type(ctx
, &instr
->dest
.ssa
), "");
2082 return exit_waterfall(ctx
, &wctx
, ret
);
2086 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
2087 bool vs_in
, unsigned *vertex_index_out
,
2088 LLVMValueRef
*vertex_index_ref
,
2089 unsigned *const_out
, LLVMValueRef
*indir_out
)
2091 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
2092 nir_deref_path path
;
2093 unsigned idx_lvl
= 1;
2095 nir_deref_path_init(&path
, instr
, NULL
);
2097 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
2098 if (vertex_index_ref
) {
2099 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
2100 if (vertex_index_out
)
2101 *vertex_index_out
= 0;
2103 *vertex_index_out
= nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
2108 uint32_t const_offset
= 0;
2109 LLVMValueRef offset
= NULL
;
2111 if (var
->data
.compact
) {
2112 assert(instr
->deref_type
== nir_deref_type_array
);
2113 const_offset
= nir_src_as_uint(instr
->arr
.index
);
2117 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
2118 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
2119 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
2120 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
2122 for (unsigned i
= 0; i
< index
; i
++) {
2123 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
2124 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
2126 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
2127 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
2128 if (nir_src_is_const(path
.path
[idx_lvl
]->arr
.index
)) {
2129 const_offset
+= size
*
2130 nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
2132 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
2133 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
2135 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
2140 unreachable("Uhandled deref type in get_deref_instr_offset");
2144 nir_deref_path_finish(&path
);
2146 if (const_offset
&& offset
)
2147 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
2148 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
2151 *const_out
= const_offset
;
2152 *indir_out
= offset
;
2155 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
2156 nir_intrinsic_instr
*instr
,
2159 LLVMValueRef result
;
2160 LLVMValueRef vertex_index
= NULL
;
2161 LLVMValueRef indir_index
= NULL
;
2162 unsigned const_index
= 0;
2164 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
2166 unsigned location
= var
->data
.location
;
2167 unsigned driver_location
= var
->data
.driver_location
;
2168 const bool is_patch
= var
->data
.patch
||
2169 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
2170 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
;
2171 const bool is_compact
= var
->data
.compact
;
2173 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2174 false, NULL
, is_patch
? NULL
: &vertex_index
,
2175 &const_index
, &indir_index
);
2177 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2179 LLVMTypeRef src_component_type
;
2180 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
2181 src_component_type
= LLVMGetElementType(dest_type
);
2183 src_component_type
= dest_type
;
2185 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
2186 vertex_index
, indir_index
,
2187 const_index
, location
, driver_location
,
2188 var
->data
.location_frac
,
2189 instr
->num_components
,
2190 is_patch
, is_compact
, load_inputs
);
2191 if (instr
->dest
.ssa
.bit_size
== 16) {
2192 result
= ac_to_integer(&ctx
->ac
, result
);
2193 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
2195 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
2199 type_scalar_size_bytes(const struct glsl_type
*type
)
2201 assert(glsl_type_is_vector_or_scalar(type
) ||
2202 glsl_type_is_matrix(type
));
2203 return glsl_type_is_boolean(type
) ? 4 : glsl_get_bit_size(type
) / 8;
2206 static LLVMValueRef
visit_load_var(struct ac_nir_context
*ctx
,
2207 nir_intrinsic_instr
*instr
)
2209 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2210 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2212 LLVMValueRef values
[8];
2214 int ve
= instr
->dest
.ssa
.num_components
;
2216 LLVMValueRef indir_index
;
2218 unsigned const_index
;
2219 unsigned stride
= 4;
2220 int mode
= deref
->mode
;
2223 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
2224 var
->data
.mode
== nir_var_shader_in
;
2225 idx
= var
->data
.driver_location
;
2226 comp
= var
->data
.location_frac
;
2227 mode
= var
->data
.mode
;
2229 get_deref_offset(ctx
, deref
, vs_in
, NULL
, NULL
,
2230 &const_index
, &indir_index
);
2232 if (var
->data
.compact
) {
2234 const_index
+= comp
;
2239 if (instr
->dest
.ssa
.bit_size
== 64 &&
2240 (deref
->mode
== nir_var_shader_in
||
2241 deref
->mode
== nir_var_shader_out
||
2242 deref
->mode
== nir_var_function_temp
))
2246 case nir_var_shader_in
:
2247 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
2248 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
2249 return load_tess_varyings(ctx
, instr
, true);
2252 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
2253 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
2254 LLVMValueRef indir_index
;
2255 unsigned const_index
, vertex_index
;
2256 get_deref_offset(ctx
, deref
, false, &vertex_index
, NULL
,
2257 &const_index
, &indir_index
);
2258 assert(indir_index
== NULL
);
2260 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
2261 var
->data
.driver_location
,
2262 var
->data
.location_frac
,
2263 instr
->num_components
, vertex_index
, const_index
, type
);
2266 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2268 unsigned count
= glsl_count_attribute_slots(
2270 ctx
->stage
== MESA_SHADER_VERTEX
);
2272 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2273 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
2274 stride
, false, true);
2276 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2280 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
2283 case nir_var_function_temp
:
2284 for (unsigned chan
= 0; chan
< ve
; chan
++) {
2286 unsigned count
= glsl_count_attribute_slots(
2289 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2290 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2291 stride
, true, true);
2293 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2297 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
2301 case nir_var_shader_out
:
2302 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2303 return load_tess_varyings(ctx
, instr
, false);
2306 if (ctx
->stage
== MESA_SHADER_FRAGMENT
&&
2307 var
->data
.fb_fetch_output
&&
2308 ctx
->abi
->emit_fbfetch
)
2309 return ctx
->abi
->emit_fbfetch(ctx
->abi
);
2311 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2313 unsigned count
= glsl_count_attribute_slots(
2316 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2317 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2318 stride
, true, true);
2320 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2324 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
2325 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
2330 case nir_var_mem_global
: {
2331 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2332 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2333 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2334 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2336 LLVMTypeRef result_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2337 if (stride
!= natural_stride
) {
2338 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(result_type
),
2339 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2340 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2342 for (unsigned i
= 0; i
< instr
->dest
.ssa
.num_components
; ++i
) {
2343 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, i
* stride
/ natural_stride
, 0);
2344 values
[i
] = LLVMBuildLoad(ctx
->ac
.builder
,
2345 ac_build_gep_ptr(&ctx
->ac
, address
, offset
), "");
2347 return ac_build_gather_values(&ctx
->ac
, values
, instr
->dest
.ssa
.num_components
);
2349 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2350 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2351 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2352 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2357 unreachable("unhandle variable mode");
2359 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
2360 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2364 visit_store_var(struct ac_nir_context
*ctx
,
2365 nir_intrinsic_instr
*instr
)
2367 if (ctx
->ac
.postponed_kill
) {
2368 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2369 ctx
->ac
.postponed_kill
, "");
2370 ac_build_ifcc(&ctx
->ac
, cond
, 7002);
2373 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2374 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2376 LLVMValueRef temp_ptr
, value
;
2379 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
2380 int writemask
= instr
->const_index
[0];
2381 LLVMValueRef indir_index
;
2382 unsigned const_index
;
2385 get_deref_offset(ctx
, deref
, false,
2386 NULL
, NULL
, &const_index
, &indir_index
);
2387 idx
= var
->data
.driver_location
;
2388 comp
= var
->data
.location_frac
;
2390 if (var
->data
.compact
) {
2391 const_index
+= comp
;
2396 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64 &&
2397 (deref
->mode
== nir_var_shader_out
||
2398 deref
->mode
== nir_var_function_temp
)) {
2400 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2401 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2404 writemask
= widen_mask(writemask
, 2);
2407 writemask
= writemask
<< comp
;
2409 switch (deref
->mode
) {
2410 case nir_var_shader_out
:
2412 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2413 LLVMValueRef vertex_index
= NULL
;
2414 LLVMValueRef indir_index
= NULL
;
2415 unsigned const_index
= 0;
2416 const bool is_patch
= var
->data
.patch
||
2417 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
2418 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
;
2420 get_deref_offset(ctx
, deref
, false, NULL
,
2421 is_patch
? NULL
: &vertex_index
,
2422 &const_index
, &indir_index
);
2424 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2425 vertex_index
, indir_index
,
2426 const_index
, src
, writemask
);
2430 for (unsigned chan
= 0; chan
< 8; chan
++) {
2432 if (!(writemask
& (1 << chan
)))
2435 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2437 if (var
->data
.compact
)
2440 unsigned count
= glsl_count_attribute_slots(
2443 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2444 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2445 stride
, true, true);
2447 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2448 value
, indir_index
, "");
2449 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2450 count
, stride
, tmp_vec
);
2453 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2455 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2459 case nir_var_function_temp
:
2460 for (unsigned chan
= 0; chan
< 8; chan
++) {
2461 if (!(writemask
& (1 << chan
)))
2464 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2466 unsigned count
= glsl_count_attribute_slots(
2469 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2470 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2473 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2474 value
, indir_index
, "");
2475 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2478 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2480 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2485 case nir_var_mem_global
: {
2486 int writemask
= instr
->const_index
[0];
2487 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2488 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2490 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2491 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2492 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2494 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2495 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2496 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2498 if (writemask
== (1u << ac_get_llvm_num_components(val
)) - 1 &&
2499 stride
== natural_stride
) {
2500 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2501 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2502 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2504 val
= LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2505 LLVMGetElementType(LLVMTypeOf(address
)), "");
2506 LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2508 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMGetElementType(LLVMTypeOf(val
)),
2509 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2510 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2511 for (unsigned chan
= 0; chan
< 4; chan
++) {
2512 if (!(writemask
& (1 << chan
)))
2515 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, chan
* stride
/ natural_stride
, 0);
2517 LLVMValueRef ptr
= ac_build_gep_ptr(&ctx
->ac
, address
, offset
);
2518 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2520 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2521 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2522 LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2532 if (ctx
->ac
.postponed_kill
)
2533 ac_build_endif(&ctx
->ac
, 7002);
2536 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2539 case GLSL_SAMPLER_DIM_BUF
:
2541 case GLSL_SAMPLER_DIM_1D
:
2542 return array
? 2 : 1;
2543 case GLSL_SAMPLER_DIM_2D
:
2544 return array
? 3 : 2;
2545 case GLSL_SAMPLER_DIM_MS
:
2546 return array
? 4 : 3;
2547 case GLSL_SAMPLER_DIM_3D
:
2548 case GLSL_SAMPLER_DIM_CUBE
:
2550 case GLSL_SAMPLER_DIM_RECT
:
2551 case GLSL_SAMPLER_DIM_SUBPASS
:
2553 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2561 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2562 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2563 LLVMValueRef coord_z
,
2564 LLVMValueRef sample_index
,
2565 LLVMValueRef fmask_desc_ptr
)
2567 unsigned sample_chan
= coord_z
? 3 : 2;
2568 LLVMValueRef addr
[4] = {coord_x
, coord_y
, coord_z
};
2569 addr
[sample_chan
] = sample_index
;
2571 ac_apply_fmask_to_sample(ctx
, fmask_desc_ptr
, addr
, coord_z
!= NULL
);
2572 return addr
[sample_chan
];
2575 static nir_deref_instr
*get_image_deref(const nir_intrinsic_instr
*instr
)
2577 assert(instr
->src
[0].is_ssa
);
2578 return nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2581 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2582 const nir_intrinsic_instr
*instr
,
2583 LLVMValueRef dynamic_index
,
2584 enum ac_descriptor_type desc_type
,
2587 nir_deref_instr
*deref_instr
=
2588 instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
?
2589 nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
) : NULL
;
2591 return get_sampler_desc(ctx
, deref_instr
, desc_type
, &instr
->instr
, dynamic_index
, true, write
);
2594 static void get_image_coords(struct ac_nir_context
*ctx
,
2595 const nir_intrinsic_instr
*instr
,
2596 LLVMValueRef dynamic_desc_index
,
2597 struct ac_image_args
*args
,
2598 enum glsl_sampler_dim dim
,
2601 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2602 LLVMValueRef masks
[] = {
2603 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2604 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2606 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2609 ASSERTED
bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2610 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2611 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2612 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2613 bool gfx9_1d
= ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2614 assert(!add_frag_pos
&& "Input attachments should be lowered by this point.");
2615 count
= image_type_to_components_count(dim
, is_array
);
2617 if (is_ms
&& (instr
->intrinsic
== nir_intrinsic_image_deref_load
||
2618 instr
->intrinsic
== nir_intrinsic_bindless_image_load
)) {
2619 LLVMValueRef fmask_load_address
[3];
2621 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2622 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2624 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2626 fmask_load_address
[2] = NULL
;
2628 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2629 fmask_load_address
[0],
2630 fmask_load_address
[1],
2631 fmask_load_address
[2],
2633 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2634 AC_DESC_FMASK
, &instr
->instr
, dynamic_desc_index
, true, false));
2636 if (count
== 1 && !gfx9_1d
) {
2637 if (instr
->src
[1].ssa
->num_components
)
2638 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2640 args
->coords
[0] = src0
;
2645 for (chan
= 0; chan
< count
; ++chan
) {
2646 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2651 args
->coords
[2] = args
->coords
[1];
2652 args
->coords
[1] = ctx
->ac
.i32_0
;
2654 args
->coords
[1] = ctx
->ac
.i32_0
;
2657 if (ctx
->ac
.chip_class
== GFX9
&&
2658 dim
== GLSL_SAMPLER_DIM_2D
&&
2660 /* The hw can't bind a slice of a 3D image as a 2D
2661 * image, because it ignores BASE_ARRAY if the target
2662 * is 3D. The workaround is to read BASE_ARRAY and set
2663 * it as the 3rd address operand for all 2D images.
2665 LLVMValueRef first_layer
, const5
, mask
;
2667 const5
= LLVMConstInt(ctx
->ac
.i32
, 5, 0);
2668 mask
= LLVMConstInt(ctx
->ac
.i32
, S_008F24_BASE_ARRAY(~0), 0);
2669 first_layer
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
->resource
, const5
, "");
2670 first_layer
= LLVMBuildAnd(ctx
->ac
.builder
, first_layer
, mask
, "");
2672 args
->coords
[count
] = first_layer
;
2678 args
->coords
[count
] = sample_index
;
2684 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2685 const nir_intrinsic_instr
*instr
,
2686 LLVMValueRef dynamic_index
,
2687 bool write
, bool atomic
)
2689 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_BUFFER
, write
);
2690 if (ctx
->ac
.chip_class
== GFX9
&& LLVM_VERSION_MAJOR
< 9 && atomic
) {
2691 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2692 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2693 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2695 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2696 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2697 elem_count
, stride
, "");
2699 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2700 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2705 static LLVMValueRef
enter_waterfall_image(struct ac_nir_context
*ctx
,
2706 struct waterfall_context
*wctx
,
2707 const nir_intrinsic_instr
*instr
)
2709 nir_deref_instr
*deref_instr
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2710 LLVMValueRef value
= get_sampler_desc_index(ctx
, deref_instr
, &instr
->instr
, true);
2711 return enter_waterfall(ctx
, wctx
, value
, nir_intrinsic_access(instr
) & ACCESS_NON_UNIFORM
);
2714 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2715 const nir_intrinsic_instr
*instr
,
2720 enum glsl_sampler_dim dim
;
2721 enum gl_access_qualifier access
;
2724 dim
= nir_intrinsic_image_dim(instr
);
2725 access
= nir_intrinsic_access(instr
);
2726 is_array
= nir_intrinsic_image_array(instr
);
2728 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2729 const struct glsl_type
*type
= image_deref
->type
;
2730 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2731 dim
= glsl_get_sampler_dim(type
);
2732 access
= var
->data
.access
;
2733 is_array
= glsl_sampler_type_is_array(type
);
2736 struct waterfall_context wctx
;
2737 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
2739 struct ac_image_args args
= {};
2741 args
.cache_policy
= get_cache_policy(ctx
, access
, false, false);
2743 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2744 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2745 unsigned num_channels
= util_last_bit(mask
);
2746 LLVMValueRef rsrc
, vindex
;
2748 rsrc
= get_image_buffer_descriptor(ctx
, instr
, dynamic_index
, false, false);
2749 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2752 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2753 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2754 ctx
->ac
.i32_0
, num_channels
,
2757 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2759 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2760 res
= ac_to_integer(&ctx
->ac
, res
);
2762 bool level_zero
= nir_src_is_const(instr
->src
[3]) && nir_src_as_uint(instr
->src
[3]) == 0;
2764 args
.opcode
= level_zero
? ac_image_load
: ac_image_load_mip
;
2765 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, false);
2766 get_image_coords(ctx
, instr
, dynamic_index
, &args
, dim
, is_array
);
2767 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2769 args
.lod
= get_src(ctx
, instr
->src
[3]);
2771 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2773 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2775 return exit_waterfall(ctx
, &wctx
, res
);
2778 static void visit_image_store(struct ac_nir_context
*ctx
,
2779 const nir_intrinsic_instr
*instr
,
2782 if (ctx
->ac
.postponed_kill
) {
2783 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2784 ctx
->ac
.postponed_kill
, "");
2785 ac_build_ifcc(&ctx
->ac
, cond
, 7003);
2788 enum glsl_sampler_dim dim
;
2789 enum gl_access_qualifier access
;
2793 dim
= nir_intrinsic_image_dim(instr
);
2794 access
= nir_intrinsic_access(instr
);
2795 is_array
= nir_intrinsic_image_array(instr
);
2797 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2798 const struct glsl_type
*type
= image_deref
->type
;
2799 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2800 dim
= glsl_get_sampler_dim(type
);
2801 access
= var
->data
.access
;
2802 is_array
= glsl_sampler_type_is_array(type
);
2805 struct waterfall_context wctx
;
2806 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
2808 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
2809 struct ac_image_args args
= {};
2811 args
.cache_policy
= get_cache_policy(ctx
, access
, true, writeonly_memory
);
2813 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2814 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, dynamic_index
, true, false);
2815 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2816 unsigned src_channels
= ac_get_llvm_num_components(src
);
2817 LLVMValueRef vindex
;
2819 if (src_channels
== 3)
2820 src
= ac_build_expand_to_vec4(&ctx
->ac
, src
, 3);
2822 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2823 get_src(ctx
, instr
->src
[1]),
2826 ac_build_buffer_store_format(&ctx
->ac
, rsrc
, src
, vindex
,
2827 ctx
->ac
.i32_0
, src_channels
,
2830 bool level_zero
= nir_src_is_const(instr
->src
[4]) && nir_src_as_uint(instr
->src
[4]) == 0;
2832 args
.opcode
= level_zero
? ac_image_store
: ac_image_store_mip
;
2833 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2834 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, true);
2835 get_image_coords(ctx
, instr
, dynamic_index
, &args
, dim
, is_array
);
2836 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2838 args
.lod
= get_src(ctx
, instr
->src
[4]);
2841 ac_build_image_opcode(&ctx
->ac
, &args
);
2844 exit_waterfall(ctx
, &wctx
, NULL
);
2845 if (ctx
->ac
.postponed_kill
)
2846 ac_build_endif(&ctx
->ac
, 7003);
2849 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2850 const nir_intrinsic_instr
*instr
,
2853 if (ctx
->ac
.postponed_kill
) {
2854 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2855 ctx
->ac
.postponed_kill
, "");
2856 ac_build_ifcc(&ctx
->ac
, cond
, 7004);
2859 LLVMValueRef params
[7];
2860 int param_count
= 0;
2862 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
||
2863 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_comp_swap
;
2864 const char *atomic_name
;
2865 char intrinsic_name
[64];
2866 enum ac_atomic_op atomic_subop
;
2867 ASSERTED
int length
;
2869 enum glsl_sampler_dim dim
;
2872 if (instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imin
||
2873 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umin
||
2874 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imax
||
2875 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umax
) {
2876 ASSERTED
const GLenum format
= nir_intrinsic_format(instr
);
2877 assert(format
== GL_R32UI
|| format
== GL_R32I
);
2879 dim
= nir_intrinsic_image_dim(instr
);
2880 is_array
= nir_intrinsic_image_array(instr
);
2882 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2883 dim
= glsl_get_sampler_dim(type
);
2884 is_array
= glsl_sampler_type_is_array(type
);
2887 struct waterfall_context wctx
;
2888 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
2890 switch (instr
->intrinsic
) {
2891 case nir_intrinsic_bindless_image_atomic_add
:
2892 case nir_intrinsic_image_deref_atomic_add
:
2893 atomic_name
= "add";
2894 atomic_subop
= ac_atomic_add
;
2896 case nir_intrinsic_bindless_image_atomic_imin
:
2897 case nir_intrinsic_image_deref_atomic_imin
:
2898 atomic_name
= "smin";
2899 atomic_subop
= ac_atomic_smin
;
2901 case nir_intrinsic_bindless_image_atomic_umin
:
2902 case nir_intrinsic_image_deref_atomic_umin
:
2903 atomic_name
= "umin";
2904 atomic_subop
= ac_atomic_umin
;
2906 case nir_intrinsic_bindless_image_atomic_imax
:
2907 case nir_intrinsic_image_deref_atomic_imax
:
2908 atomic_name
= "smax";
2909 atomic_subop
= ac_atomic_smax
;
2911 case nir_intrinsic_bindless_image_atomic_umax
:
2912 case nir_intrinsic_image_deref_atomic_umax
:
2913 atomic_name
= "umax";
2914 atomic_subop
= ac_atomic_umax
;
2916 case nir_intrinsic_bindless_image_atomic_and
:
2917 case nir_intrinsic_image_deref_atomic_and
:
2918 atomic_name
= "and";
2919 atomic_subop
= ac_atomic_and
;
2921 case nir_intrinsic_bindless_image_atomic_or
:
2922 case nir_intrinsic_image_deref_atomic_or
:
2924 atomic_subop
= ac_atomic_or
;
2926 case nir_intrinsic_bindless_image_atomic_xor
:
2927 case nir_intrinsic_image_deref_atomic_xor
:
2928 atomic_name
= "xor";
2929 atomic_subop
= ac_atomic_xor
;
2931 case nir_intrinsic_bindless_image_atomic_exchange
:
2932 case nir_intrinsic_image_deref_atomic_exchange
:
2933 atomic_name
= "swap";
2934 atomic_subop
= ac_atomic_swap
;
2936 case nir_intrinsic_bindless_image_atomic_comp_swap
:
2937 case nir_intrinsic_image_deref_atomic_comp_swap
:
2938 atomic_name
= "cmpswap";
2939 atomic_subop
= 0; /* not used */
2941 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
2942 case nir_intrinsic_image_deref_atomic_inc_wrap
: {
2943 atomic_name
= "inc";
2944 atomic_subop
= ac_atomic_inc_wrap
;
2945 /* ATOMIC_INC instruction does:
2946 * value = (value + 1) % (data + 1)
2948 * value = (value + 1) % data
2949 * So replace 'data' by 'data - 1'.
2951 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
] =
2952 LLVMBuildSub(ctx
->ac
.builder
,
2953 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
],
2957 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
2958 case nir_intrinsic_image_deref_atomic_dec_wrap
:
2959 atomic_name
= "dec";
2960 atomic_subop
= ac_atomic_dec_wrap
;
2967 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
2968 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
2970 LLVMValueRef result
;
2971 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2972 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, dynamic_index
, true, true);
2973 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2974 ctx
->ac
.i32_0
, ""); /* vindex */
2975 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
2976 if (LLVM_VERSION_MAJOR
>= 9) {
2977 /* XXX: The new raw/struct atomic intrinsics are buggy
2978 * with LLVM 8, see r358579.
2980 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
2981 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
2983 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2984 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
2986 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
2988 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
2989 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
2992 assert(length
< sizeof(intrinsic_name
));
2993 result
= ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
2994 params
, param_count
, 0);
2996 struct ac_image_args args
= {};
2997 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
2998 args
.atomic
= atomic_subop
;
2999 args
.data
[0] = params
[0];
3001 args
.data
[1] = params
[1];
3002 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, true);
3003 get_image_coords(ctx
, instr
, dynamic_index
, &args
, dim
, is_array
);
3004 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
3006 result
= ac_build_image_opcode(&ctx
->ac
, &args
);
3009 result
= exit_waterfall(ctx
, &wctx
, result
);
3010 if (ctx
->ac
.postponed_kill
)
3011 ac_build_endif(&ctx
->ac
, 7004);
3015 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
3016 nir_intrinsic_instr
*instr
)
3018 struct waterfall_context wctx
;
3019 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
3020 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, false);
3022 LLVMValueRef ret
= ac_build_image_get_sample_count(&ctx
->ac
, rsrc
);
3024 return exit_waterfall(ctx
, &wctx
, ret
);
3027 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
3028 const nir_intrinsic_instr
*instr
,
3033 enum glsl_sampler_dim dim
;
3036 dim
= nir_intrinsic_image_dim(instr
);
3037 is_array
= nir_intrinsic_image_array(instr
);
3039 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
3040 dim
= glsl_get_sampler_dim(type
);
3041 is_array
= glsl_sampler_type_is_array(type
);
3044 struct waterfall_context wctx
;
3045 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
3047 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
3048 res
= get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_BUFFER
, false), true);
3051 struct ac_image_args args
= { 0 };
3053 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
3055 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, false);
3056 args
.opcode
= ac_image_get_resinfo
;
3057 args
.lod
= ctx
->ac
.i32_0
;
3058 args
.attributes
= AC_FUNC_ATTR_READNONE
;
3060 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
3062 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
3064 if (dim
== GLSL_SAMPLER_DIM_CUBE
&& is_array
) {
3065 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
3066 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
3067 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
3068 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
3071 if (ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
&& is_array
) {
3072 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
3073 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
3077 return exit_waterfall(ctx
, &wctx
, res
);
3080 static void emit_membar(struct ac_llvm_context
*ac
,
3081 const nir_intrinsic_instr
*instr
)
3083 unsigned wait_flags
= 0;
3085 switch (instr
->intrinsic
) {
3086 case nir_intrinsic_memory_barrier
:
3087 case nir_intrinsic_group_memory_barrier
:
3088 wait_flags
= AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
3090 case nir_intrinsic_memory_barrier_buffer
:
3091 case nir_intrinsic_memory_barrier_image
:
3092 wait_flags
= AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
3094 case nir_intrinsic_memory_barrier_shared
:
3095 wait_flags
= AC_WAIT_LGKM
;
3101 ac_build_waitcnt(ac
, wait_flags
);
3104 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
3106 /* GFX6 only (thanks to a hw bug workaround):
3107 * The real barrier instruction isn’t needed, because an entire patch
3108 * always fits into a single wave.
3110 if (ac
->chip_class
== GFX6
&& stage
== MESA_SHADER_TESS_CTRL
) {
3111 ac_build_waitcnt(ac
, AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
);
3114 ac_build_s_barrier(ac
);
3117 static void emit_discard(struct ac_nir_context
*ctx
,
3118 const nir_intrinsic_instr
*instr
)
3122 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
3123 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
3124 get_src(ctx
, instr
->src
[0]),
3127 assert(instr
->intrinsic
== nir_intrinsic_discard
);
3128 cond
= ctx
->ac
.i1false
;
3131 ac_build_kill_if_false(&ctx
->ac
, cond
);
3134 static void emit_demote(struct ac_nir_context
*ctx
,
3135 const nir_intrinsic_instr
*instr
)
3139 if (instr
->intrinsic
== nir_intrinsic_demote_if
) {
3140 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
3141 get_src(ctx
, instr
->src
[0]),
3144 assert(instr
->intrinsic
== nir_intrinsic_demote
);
3145 cond
= ctx
->ac
.i1false
;
3148 /* Kill immediately while maintaining WQM. */
3149 ac_build_kill_if_false(&ctx
->ac
, ac_build_wqm_vote(&ctx
->ac
, cond
));
3151 LLVMValueRef mask
= LLVMBuildLoad(ctx
->ac
.builder
, ctx
->ac
.postponed_kill
, "");
3152 mask
= LLVMBuildAnd(ctx
->ac
.builder
, mask
, cond
, "");
3153 LLVMBuildStore(ctx
->ac
.builder
, mask
, ctx
->ac
.postponed_kill
);
3158 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
3160 LLVMValueRef result
;
3161 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
3162 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3163 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3164 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
3166 if (ctx
->ac
.wave_size
== 32)
3167 result
= LLVMBuildLShr(ctx
->ac
.builder
, result
,
3168 LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
3170 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
3174 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
3176 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
3177 LLVMValueRef result
;
3178 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3179 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3180 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
3181 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
3183 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
3188 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
3190 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
3191 return LLVMBuildAnd(ctx
->ac
.builder
,
3192 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3193 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
3195 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
3200 visit_first_invocation(struct ac_nir_context
*ctx
)
3202 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
3203 const char *intr
= ctx
->ac
.wave_size
== 32 ? "llvm.cttz.i32" : "llvm.cttz.i64";
3205 /* The second argument is whether cttz(0) should be defined, but we do not care. */
3206 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
3207 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
, intr
,
3208 ctx
->ac
.iN_wavemask
, args
, 2,
3209 AC_FUNC_ATTR_NOUNWIND
|
3210 AC_FUNC_ATTR_READNONE
);
3212 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
3216 visit_load_shared(struct ac_nir_context
*ctx
,
3217 const nir_intrinsic_instr
*instr
)
3219 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
3221 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0],
3222 instr
->dest
.ssa
.bit_size
);
3224 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
3225 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
3226 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
3227 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
3230 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
3231 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
3235 visit_store_shared(struct ac_nir_context
*ctx
,
3236 const nir_intrinsic_instr
*instr
)
3238 LLVMValueRef derived_ptr
, data
,index
;
3239 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3241 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1],
3242 instr
->src
[0].ssa
->bit_size
);
3243 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
3245 int writemask
= nir_intrinsic_write_mask(instr
);
3246 for (int chan
= 0; chan
< 4; chan
++) {
3247 if (!(writemask
& (1 << chan
))) {
3250 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
3251 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
3252 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
3253 LLVMBuildStore(builder
, data
, derived_ptr
);
3257 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
3258 const nir_intrinsic_instr
*instr
,
3259 LLVMValueRef ptr
, int src_idx
)
3261 if (ctx
->ac
.postponed_kill
) {
3262 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
3263 ctx
->ac
.postponed_kill
, "");
3264 ac_build_ifcc(&ctx
->ac
, cond
, 7005);
3267 LLVMValueRef result
;
3268 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
3270 const char *sync_scope
= LLVM_VERSION_MAJOR
>= 9 ? "workgroup-one-as" : "workgroup";
3272 if (instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
) {
3273 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
3274 if (deref
->mode
== nir_var_mem_global
) {
3275 /* use "singlethread" sync scope to implement relaxed ordering */
3276 sync_scope
= LLVM_VERSION_MAJOR
>= 9 ? "singlethread-one-as" : "singlethread";
3278 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(src
), LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
)));
3279 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ptr_type
, "");
3283 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
3284 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
3285 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
3286 result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, src
, src1
, sync_scope
);
3287 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
3289 LLVMAtomicRMWBinOp op
;
3290 switch (instr
->intrinsic
) {
3291 case nir_intrinsic_shared_atomic_add
:
3292 case nir_intrinsic_deref_atomic_add
:
3293 op
= LLVMAtomicRMWBinOpAdd
;
3295 case nir_intrinsic_shared_atomic_umin
:
3296 case nir_intrinsic_deref_atomic_umin
:
3297 op
= LLVMAtomicRMWBinOpUMin
;
3299 case nir_intrinsic_shared_atomic_umax
:
3300 case nir_intrinsic_deref_atomic_umax
:
3301 op
= LLVMAtomicRMWBinOpUMax
;
3303 case nir_intrinsic_shared_atomic_imin
:
3304 case nir_intrinsic_deref_atomic_imin
:
3305 op
= LLVMAtomicRMWBinOpMin
;
3307 case nir_intrinsic_shared_atomic_imax
:
3308 case nir_intrinsic_deref_atomic_imax
:
3309 op
= LLVMAtomicRMWBinOpMax
;
3311 case nir_intrinsic_shared_atomic_and
:
3312 case nir_intrinsic_deref_atomic_and
:
3313 op
= LLVMAtomicRMWBinOpAnd
;
3315 case nir_intrinsic_shared_atomic_or
:
3316 case nir_intrinsic_deref_atomic_or
:
3317 op
= LLVMAtomicRMWBinOpOr
;
3319 case nir_intrinsic_shared_atomic_xor
:
3320 case nir_intrinsic_deref_atomic_xor
:
3321 op
= LLVMAtomicRMWBinOpXor
;
3323 case nir_intrinsic_shared_atomic_exchange
:
3324 case nir_intrinsic_deref_atomic_exchange
:
3325 op
= LLVMAtomicRMWBinOpXchg
;
3331 result
= ac_build_atomic_rmw(&ctx
->ac
, op
, ptr
, ac_to_integer(&ctx
->ac
, src
), sync_scope
);
3334 if (ctx
->ac
.postponed_kill
)
3335 ac_build_endif(&ctx
->ac
, 7005);
3339 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
3341 LLVMValueRef values
[2];
3342 LLVMValueRef pos
[2];
3344 pos
[0] = ac_to_float(&ctx
->ac
,
3345 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[0]));
3346 pos
[1] = ac_to_float(&ctx
->ac
,
3347 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[1]));
3349 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
3350 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
3351 return ac_build_gather_values(&ctx
->ac
, values
, 2);
3354 static LLVMValueRef
lookup_interp_param(struct ac_nir_context
*ctx
,
3355 enum glsl_interp_mode interp
, unsigned location
)
3358 case INTERP_MODE_FLAT
:
3361 case INTERP_MODE_SMOOTH
:
3362 case INTERP_MODE_NONE
:
3363 if (location
== INTERP_CENTER
)
3364 return ac_get_arg(&ctx
->ac
, ctx
->args
->persp_center
);
3365 else if (location
== INTERP_CENTROID
)
3366 return ctx
->abi
->persp_centroid
;
3367 else if (location
== INTERP_SAMPLE
)
3368 return ac_get_arg(&ctx
->ac
, ctx
->args
->persp_sample
);
3370 case INTERP_MODE_NOPERSPECTIVE
:
3371 if (location
== INTERP_CENTER
)
3372 return ac_get_arg(&ctx
->ac
, ctx
->args
->linear_center
);
3373 else if (location
== INTERP_CENTROID
)
3374 return ctx
->abi
->linear_centroid
;
3375 else if (location
== INTERP_SAMPLE
)
3376 return ac_get_arg(&ctx
->ac
, ctx
->args
->linear_sample
);
3382 static LLVMValueRef
barycentric_center(struct ac_nir_context
*ctx
,
3385 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3386 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3389 static LLVMValueRef
barycentric_offset(struct ac_nir_context
*ctx
,
3391 LLVMValueRef offset
)
3393 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3394 LLVMValueRef src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_0
, ""));
3395 LLVMValueRef src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_1
, ""));
3397 LLVMValueRef ij_out
[2];
3398 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
3401 * take the I then J parameters, and the DDX/Y for it, and
3402 * calculate the IJ inputs for the interpolator.
3403 * temp1 = ddx * offset/sample.x + I;
3404 * interp_param.I = ddy * offset/sample.y + temp1;
3405 * temp1 = ddx * offset/sample.x + J;
3406 * interp_param.J = ddy * offset/sample.y + temp1;
3408 for (unsigned i
= 0; i
< 2; i
++) {
3409 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
3410 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
3411 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3412 ddxy_out
, ix_ll
, "");
3413 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3414 ddxy_out
, iy_ll
, "");
3415 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3416 interp_param
, ix_ll
, "");
3417 LLVMValueRef temp1
, temp2
;
3419 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
3422 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
3423 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
3425 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
3426 temp2
, ctx
->ac
.i32
, "");
3428 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
3429 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3432 static LLVMValueRef
barycentric_centroid(struct ac_nir_context
*ctx
,
3435 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTROID
);
3436 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3439 static LLVMValueRef
barycentric_at_sample(struct ac_nir_context
*ctx
,
3441 LLVMValueRef sample_id
)
3443 if (ctx
->abi
->interp_at_sample_force_center
)
3444 return barycentric_center(ctx
, mode
);
3446 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
3448 /* fetch sample ID */
3449 LLVMValueRef sample_pos
= ctx
->abi
->load_sample_position(ctx
->abi
, sample_id
);
3451 LLVMValueRef src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_0
, "");
3452 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
3453 LLVMValueRef src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_1
, "");
3454 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
3455 LLVMValueRef coords
[] = { src_c0
, src_c1
};
3456 LLVMValueRef offset
= ac_build_gather_values(&ctx
->ac
, coords
, 2);
3458 return barycentric_offset(ctx
, mode
, offset
);
3462 static LLVMValueRef
barycentric_sample(struct ac_nir_context
*ctx
,
3465 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_SAMPLE
);
3466 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3469 static LLVMValueRef
barycentric_model(struct ac_nir_context
*ctx
)
3471 return LLVMBuildBitCast(ctx
->ac
.builder
,
3472 ac_get_arg(&ctx
->ac
, ctx
->args
->pull_model
),
3476 static LLVMValueRef
load_interpolated_input(struct ac_nir_context
*ctx
,
3477 LLVMValueRef interp_param
,
3478 unsigned index
, unsigned comp_start
,
3479 unsigned num_components
,
3482 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3484 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
,
3485 interp_param
, ctx
->ac
.v2f32
, "");
3486 LLVMValueRef i
= LLVMBuildExtractElement(
3487 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_0
, "");
3488 LLVMValueRef j
= LLVMBuildExtractElement(
3489 ctx
->ac
.builder
, interp_param
, ctx
->ac
.i32_1
, "");
3491 LLVMValueRef values
[4];
3492 assert(bitsize
== 16 || bitsize
== 32);
3493 for (unsigned comp
= 0; comp
< num_components
; comp
++) {
3494 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, comp_start
+ comp
, false);
3495 if (bitsize
== 16) {
3496 values
[comp
] = ac_build_fs_interp_f16(&ctx
->ac
, llvm_chan
, attr_number
,
3497 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
), i
, j
);
3499 values
[comp
] = ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3500 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
), i
, j
);
3504 return ac_to_integer(&ctx
->ac
, ac_build_gather_values(&ctx
->ac
, values
, num_components
));
3507 static LLVMValueRef
load_input(struct ac_nir_context
*ctx
,
3508 nir_intrinsic_instr
*instr
)
3510 unsigned offset_idx
= instr
->intrinsic
== nir_intrinsic_load_input
? 0 : 1;
3512 /* We only lower inputs for fragment shaders ATM */
3513 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[offset_idx
]);
3515 assert(offset
[0].i32
== 0);
3517 unsigned component
= nir_intrinsic_component(instr
);
3518 unsigned index
= nir_intrinsic_base(instr
);
3519 unsigned vertex_id
= 2; /* P0 */
3521 if (instr
->intrinsic
== nir_intrinsic_load_input_vertex
) {
3522 nir_const_value
*src0
= nir_src_as_const_value(instr
->src
[0]);
3524 switch (src0
[0].i32
) {
3535 unreachable("Invalid vertex index");
3539 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3540 LLVMValueRef values
[8];
3542 /* Each component of a 64-bit value takes up two GL-level channels. */
3543 unsigned num_components
= instr
->dest
.ssa
.num_components
;
3544 unsigned bit_size
= instr
->dest
.ssa
.bit_size
;
3546 bit_size
== 64 ? num_components
* 2 : num_components
;
3548 for (unsigned chan
= 0; chan
< channels
; chan
++) {
3549 if (component
+ chan
> 4)
3550 attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
+ 1, false);
3551 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, (component
+ chan
) % 4, false);
3552 values
[chan
] = ac_build_fs_interp_mov(&ctx
->ac
,
3553 LLVMConstInt(ctx
->ac
.i32
, vertex_id
, false),
3556 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
));
3557 values
[chan
] = LLVMBuildBitCast(ctx
->ac
.builder
, values
[chan
], ctx
->ac
.i32
, "");
3558 values
[chan
] = LLVMBuildTruncOrBitCast(ctx
->ac
.builder
, values
[chan
],
3559 bit_size
== 16 ? ctx
->ac
.i16
: ctx
->ac
.i32
, "");
3562 LLVMValueRef result
= ac_build_gather_values(&ctx
->ac
, values
, channels
);
3563 if (bit_size
== 64) {
3564 LLVMTypeRef type
= num_components
== 1 ? ctx
->ac
.i64
:
3565 LLVMVectorType(ctx
->ac
.i64
, num_components
);
3566 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
, type
, "");
3571 static void visit_intrinsic(struct ac_nir_context
*ctx
,
3572 nir_intrinsic_instr
*instr
)
3574 LLVMValueRef result
= NULL
;
3576 switch (instr
->intrinsic
) {
3577 case nir_intrinsic_ballot
:
3578 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3579 if (ctx
->ac
.ballot_mask_bits
> ctx
->ac
.wave_size
)
3580 result
= LLVMBuildZExt(ctx
->ac
.builder
, result
, ctx
->ac
.iN_ballotmask
, "");
3582 case nir_intrinsic_read_invocation
:
3583 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3584 get_src(ctx
, instr
->src
[1]));
3586 case nir_intrinsic_read_first_invocation
:
3587 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
3589 case nir_intrinsic_load_subgroup_invocation
:
3590 result
= ac_get_thread_id(&ctx
->ac
);
3592 case nir_intrinsic_load_work_group_id
: {
3593 LLVMValueRef values
[3];
3595 for (int i
= 0; i
< 3; i
++) {
3596 values
[i
] = ctx
->args
->workgroup_ids
[i
].used
?
3597 ac_get_arg(&ctx
->ac
, ctx
->args
->workgroup_ids
[i
]) : ctx
->ac
.i32_0
;
3600 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
3603 case nir_intrinsic_load_base_vertex
:
3604 case nir_intrinsic_load_first_vertex
:
3605 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
3607 case nir_intrinsic_load_local_group_size
:
3608 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
3610 case nir_intrinsic_load_vertex_id
:
3611 result
= LLVMBuildAdd(ctx
->ac
.builder
,
3612 ac_get_arg(&ctx
->ac
, ctx
->args
->vertex_id
),
3613 ac_get_arg(&ctx
->ac
, ctx
->args
->base_vertex
), "");
3615 case nir_intrinsic_load_vertex_id_zero_base
: {
3616 result
= ctx
->abi
->vertex_id
;
3619 case nir_intrinsic_load_local_invocation_id
: {
3620 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->local_invocation_ids
);
3623 case nir_intrinsic_load_base_instance
:
3624 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->start_instance
);
3626 case nir_intrinsic_load_draw_id
:
3627 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->draw_id
);
3629 case nir_intrinsic_load_view_index
:
3630 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->view_index
);
3632 case nir_intrinsic_load_invocation_id
:
3633 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3634 result
= ac_unpack_param(&ctx
->ac
,
3635 ac_get_arg(&ctx
->ac
, ctx
->args
->tcs_rel_ids
),
3638 if (ctx
->ac
.chip_class
>= GFX10
) {
3639 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3640 ac_get_arg(&ctx
->ac
, ctx
->args
->gs_invocation_id
),
3641 LLVMConstInt(ctx
->ac
.i32
, 127, 0), "");
3643 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->gs_invocation_id
);
3647 case nir_intrinsic_load_primitive_id
:
3648 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3649 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->gs_prim_id
);
3650 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3651 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->tcs_patch_id
);
3652 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3653 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->tes_patch_id
);
3655 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3657 case nir_intrinsic_load_sample_id
:
3658 result
= ac_unpack_param(&ctx
->ac
,
3659 ac_get_arg(&ctx
->ac
, ctx
->args
->ancillary
),
3662 case nir_intrinsic_load_sample_pos
:
3663 result
= load_sample_pos(ctx
);
3665 case nir_intrinsic_load_sample_mask_in
:
3666 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3668 case nir_intrinsic_load_frag_coord
: {
3669 LLVMValueRef values
[4] = {
3670 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[0]),
3671 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[1]),
3672 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[2]),
3673 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
,
3674 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[3]))
3676 result
= ac_to_integer(&ctx
->ac
,
3677 ac_build_gather_values(&ctx
->ac
, values
, 4));
3680 case nir_intrinsic_load_layer_id
:
3681 result
= ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)];
3683 case nir_intrinsic_load_front_face
:
3684 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->front_face
);
3686 case nir_intrinsic_load_helper_invocation
:
3687 result
= ac_build_load_helper_invocation(&ctx
->ac
);
3689 case nir_intrinsic_is_helper_invocation
:
3690 result
= ac_build_is_helper_invocation(&ctx
->ac
);
3692 case nir_intrinsic_load_color0
:
3693 result
= ctx
->abi
->color0
;
3695 case nir_intrinsic_load_color1
:
3696 result
= ctx
->abi
->color1
;
3698 case nir_intrinsic_load_user_data_amd
:
3699 assert(LLVMTypeOf(ctx
->abi
->user_data
) == ctx
->ac
.v4i32
);
3700 result
= ctx
->abi
->user_data
;
3702 case nir_intrinsic_load_instance_id
:
3703 result
= ctx
->abi
->instance_id
;
3705 case nir_intrinsic_load_num_work_groups
:
3706 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->num_work_groups
);
3708 case nir_intrinsic_load_local_invocation_index
:
3709 result
= visit_load_local_invocation_index(ctx
);
3711 case nir_intrinsic_load_subgroup_id
:
3712 result
= visit_load_subgroup_id(ctx
);
3714 case nir_intrinsic_load_num_subgroups
:
3715 result
= visit_load_num_subgroups(ctx
);
3717 case nir_intrinsic_first_invocation
:
3718 result
= visit_first_invocation(ctx
);
3720 case nir_intrinsic_load_push_constant
:
3721 result
= visit_load_push_constant(ctx
, instr
);
3723 case nir_intrinsic_vulkan_resource_index
: {
3724 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3725 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3726 unsigned binding
= nir_intrinsic_binding(instr
);
3728 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3732 case nir_intrinsic_vulkan_resource_reindex
:
3733 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3735 case nir_intrinsic_store_ssbo
:
3736 visit_store_ssbo(ctx
, instr
);
3738 case nir_intrinsic_load_ssbo
:
3739 result
= visit_load_buffer(ctx
, instr
);
3741 case nir_intrinsic_ssbo_atomic_add
:
3742 case nir_intrinsic_ssbo_atomic_imin
:
3743 case nir_intrinsic_ssbo_atomic_umin
:
3744 case nir_intrinsic_ssbo_atomic_imax
:
3745 case nir_intrinsic_ssbo_atomic_umax
:
3746 case nir_intrinsic_ssbo_atomic_and
:
3747 case nir_intrinsic_ssbo_atomic_or
:
3748 case nir_intrinsic_ssbo_atomic_xor
:
3749 case nir_intrinsic_ssbo_atomic_exchange
:
3750 case nir_intrinsic_ssbo_atomic_comp_swap
:
3751 result
= visit_atomic_ssbo(ctx
, instr
);
3753 case nir_intrinsic_load_ubo
:
3754 result
= visit_load_ubo_buffer(ctx
, instr
);
3756 case nir_intrinsic_get_buffer_size
:
3757 result
= visit_get_buffer_size(ctx
, instr
);
3759 case nir_intrinsic_load_deref
:
3760 result
= visit_load_var(ctx
, instr
);
3762 case nir_intrinsic_store_deref
:
3763 visit_store_var(ctx
, instr
);
3765 case nir_intrinsic_load_shared
:
3766 result
= visit_load_shared(ctx
, instr
);
3768 case nir_intrinsic_store_shared
:
3769 visit_store_shared(ctx
, instr
);
3771 case nir_intrinsic_bindless_image_samples
:
3772 case nir_intrinsic_image_deref_samples
:
3773 result
= visit_image_samples(ctx
, instr
);
3775 case nir_intrinsic_bindless_image_load
:
3776 result
= visit_image_load(ctx
, instr
, true);
3778 case nir_intrinsic_image_deref_load
:
3779 result
= visit_image_load(ctx
, instr
, false);
3781 case nir_intrinsic_bindless_image_store
:
3782 visit_image_store(ctx
, instr
, true);
3784 case nir_intrinsic_image_deref_store
:
3785 visit_image_store(ctx
, instr
, false);
3787 case nir_intrinsic_bindless_image_atomic_add
:
3788 case nir_intrinsic_bindless_image_atomic_imin
:
3789 case nir_intrinsic_bindless_image_atomic_umin
:
3790 case nir_intrinsic_bindless_image_atomic_imax
:
3791 case nir_intrinsic_bindless_image_atomic_umax
:
3792 case nir_intrinsic_bindless_image_atomic_and
:
3793 case nir_intrinsic_bindless_image_atomic_or
:
3794 case nir_intrinsic_bindless_image_atomic_xor
:
3795 case nir_intrinsic_bindless_image_atomic_exchange
:
3796 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3797 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
3798 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
3799 result
= visit_image_atomic(ctx
, instr
, true);
3801 case nir_intrinsic_image_deref_atomic_add
:
3802 case nir_intrinsic_image_deref_atomic_imin
:
3803 case nir_intrinsic_image_deref_atomic_umin
:
3804 case nir_intrinsic_image_deref_atomic_imax
:
3805 case nir_intrinsic_image_deref_atomic_umax
:
3806 case nir_intrinsic_image_deref_atomic_and
:
3807 case nir_intrinsic_image_deref_atomic_or
:
3808 case nir_intrinsic_image_deref_atomic_xor
:
3809 case nir_intrinsic_image_deref_atomic_exchange
:
3810 case nir_intrinsic_image_deref_atomic_comp_swap
:
3811 case nir_intrinsic_image_deref_atomic_inc_wrap
:
3812 case nir_intrinsic_image_deref_atomic_dec_wrap
:
3813 result
= visit_image_atomic(ctx
, instr
, false);
3815 case nir_intrinsic_bindless_image_size
:
3816 result
= visit_image_size(ctx
, instr
, true);
3818 case nir_intrinsic_image_deref_size
:
3819 result
= visit_image_size(ctx
, instr
, false);
3821 case nir_intrinsic_shader_clock
:
3822 result
= ac_build_shader_clock(&ctx
->ac
);
3824 case nir_intrinsic_discard
:
3825 case nir_intrinsic_discard_if
:
3826 emit_discard(ctx
, instr
);
3828 case nir_intrinsic_demote
:
3829 case nir_intrinsic_demote_if
:
3830 emit_demote(ctx
, instr
);
3832 case nir_intrinsic_memory_barrier
:
3833 case nir_intrinsic_group_memory_barrier
:
3834 case nir_intrinsic_memory_barrier_buffer
:
3835 case nir_intrinsic_memory_barrier_image
:
3836 case nir_intrinsic_memory_barrier_shared
:
3837 emit_membar(&ctx
->ac
, instr
);
3839 case nir_intrinsic_memory_barrier_tcs_patch
:
3841 case nir_intrinsic_control_barrier
:
3842 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
3844 case nir_intrinsic_shared_atomic_add
:
3845 case nir_intrinsic_shared_atomic_imin
:
3846 case nir_intrinsic_shared_atomic_umin
:
3847 case nir_intrinsic_shared_atomic_imax
:
3848 case nir_intrinsic_shared_atomic_umax
:
3849 case nir_intrinsic_shared_atomic_and
:
3850 case nir_intrinsic_shared_atomic_or
:
3851 case nir_intrinsic_shared_atomic_xor
:
3852 case nir_intrinsic_shared_atomic_exchange
:
3853 case nir_intrinsic_shared_atomic_comp_swap
: {
3854 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0],
3855 instr
->src
[1].ssa
->bit_size
);
3856 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3859 case nir_intrinsic_deref_atomic_add
:
3860 case nir_intrinsic_deref_atomic_imin
:
3861 case nir_intrinsic_deref_atomic_umin
:
3862 case nir_intrinsic_deref_atomic_imax
:
3863 case nir_intrinsic_deref_atomic_umax
:
3864 case nir_intrinsic_deref_atomic_and
:
3865 case nir_intrinsic_deref_atomic_or
:
3866 case nir_intrinsic_deref_atomic_xor
:
3867 case nir_intrinsic_deref_atomic_exchange
:
3868 case nir_intrinsic_deref_atomic_comp_swap
: {
3869 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
3870 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3873 case nir_intrinsic_load_barycentric_pixel
:
3874 result
= barycentric_center(ctx
, nir_intrinsic_interp_mode(instr
));
3876 case nir_intrinsic_load_barycentric_centroid
:
3877 result
= barycentric_centroid(ctx
, nir_intrinsic_interp_mode(instr
));
3879 case nir_intrinsic_load_barycentric_sample
:
3880 result
= barycentric_sample(ctx
, nir_intrinsic_interp_mode(instr
));
3882 case nir_intrinsic_load_barycentric_model
:
3883 result
= barycentric_model(ctx
);
3885 case nir_intrinsic_load_barycentric_at_offset
: {
3886 LLVMValueRef offset
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3887 result
= barycentric_offset(ctx
, nir_intrinsic_interp_mode(instr
), offset
);
3890 case nir_intrinsic_load_barycentric_at_sample
: {
3891 LLVMValueRef sample_id
= get_src(ctx
, instr
->src
[0]);
3892 result
= barycentric_at_sample(ctx
, nir_intrinsic_interp_mode(instr
), sample_id
);
3895 case nir_intrinsic_load_interpolated_input
: {
3896 /* We assume any indirect loads have been lowered away */
3897 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[1]);
3899 assert(offset
[0].i32
== 0);
3901 LLVMValueRef interp_param
= get_src(ctx
, instr
->src
[0]);
3902 unsigned index
= nir_intrinsic_base(instr
);
3903 unsigned component
= nir_intrinsic_component(instr
);
3904 result
= load_interpolated_input(ctx
, interp_param
, index
,
3906 instr
->dest
.ssa
.num_components
,
3907 instr
->dest
.ssa
.bit_size
);
3910 case nir_intrinsic_load_input
:
3911 case nir_intrinsic_load_input_vertex
:
3912 result
= load_input(ctx
, instr
);
3914 case nir_intrinsic_emit_vertex
:
3915 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
3917 case nir_intrinsic_end_primitive
:
3918 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
3920 case nir_intrinsic_load_tess_coord
:
3921 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
3923 case nir_intrinsic_load_tess_level_outer
:
3924 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, false);
3926 case nir_intrinsic_load_tess_level_inner
:
3927 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, false);
3929 case nir_intrinsic_load_tess_level_outer_default
:
3930 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, true);
3932 case nir_intrinsic_load_tess_level_inner_default
:
3933 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, true);
3935 case nir_intrinsic_load_patch_vertices_in
:
3936 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
3938 case nir_intrinsic_vote_all
: {
3939 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3940 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3943 case nir_intrinsic_vote_any
: {
3944 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3945 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
3948 case nir_intrinsic_shuffle
:
3949 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3950 get_src(ctx
, instr
->src
[1]));
3952 case nir_intrinsic_reduce
:
3953 result
= ac_build_reduce(&ctx
->ac
,
3954 get_src(ctx
, instr
->src
[0]),
3955 instr
->const_index
[0],
3956 instr
->const_index
[1]);
3958 case nir_intrinsic_inclusive_scan
:
3959 result
= ac_build_inclusive_scan(&ctx
->ac
,
3960 get_src(ctx
, instr
->src
[0]),
3961 instr
->const_index
[0]);
3963 case nir_intrinsic_exclusive_scan
:
3964 result
= ac_build_exclusive_scan(&ctx
->ac
,
3965 get_src(ctx
, instr
->src
[0]),
3966 instr
->const_index
[0]);
3968 case nir_intrinsic_quad_broadcast
: {
3969 unsigned lane
= nir_src_as_uint(instr
->src
[1]);
3970 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3971 lane
, lane
, lane
, lane
);
3974 case nir_intrinsic_quad_swap_horizontal
:
3975 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
3977 case nir_intrinsic_quad_swap_vertical
:
3978 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
3980 case nir_intrinsic_quad_swap_diagonal
:
3981 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
3983 case nir_intrinsic_quad_swizzle_amd
: {
3984 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3985 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3986 mask
& 0x3, (mask
>> 2) & 0x3,
3987 (mask
>> 4) & 0x3, (mask
>> 6) & 0x3);
3990 case nir_intrinsic_masked_swizzle_amd
: {
3991 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
3992 result
= ac_build_ds_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), mask
);
3995 case nir_intrinsic_write_invocation_amd
:
3996 result
= ac_build_writelane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3997 get_src(ctx
, instr
->src
[1]),
3998 get_src(ctx
, instr
->src
[2]));
4000 case nir_intrinsic_mbcnt_amd
:
4001 result
= ac_build_mbcnt(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
4003 case nir_intrinsic_load_scratch
: {
4004 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
4005 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
4007 LLVMTypeRef comp_type
=
4008 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
4009 LLVMTypeRef vec_type
=
4010 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
4011 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
4012 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
4013 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
4014 LLVMPointerType(vec_type
, addr_space
), "");
4015 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
4018 case nir_intrinsic_store_scratch
: {
4019 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
4020 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
4022 LLVMTypeRef comp_type
=
4023 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->src
[0].ssa
->bit_size
);
4024 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
4025 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
4026 LLVMPointerType(comp_type
, addr_space
), "");
4027 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
4028 unsigned wrmask
= nir_intrinsic_write_mask(instr
);
4031 u_bit_scan_consecutive_range(&wrmask
, &start
, &count
);
4033 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, start
, false);
4034 LLVMValueRef offset_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &offset
, 1, "");
4035 LLVMTypeRef vec_type
=
4036 count
== 1 ? comp_type
: LLVMVectorType(comp_type
, count
);
4037 offset_ptr
= LLVMBuildBitCast(ctx
->ac
.builder
,
4039 LLVMPointerType(vec_type
, addr_space
),
4041 LLVMValueRef offset_src
=
4042 ac_extract_components(&ctx
->ac
, src
, start
, count
);
4043 LLVMBuildStore(ctx
->ac
.builder
, offset_src
, offset_ptr
);
4047 case nir_intrinsic_load_constant
: {
4048 unsigned base
= nir_intrinsic_base(instr
);
4049 unsigned range
= nir_intrinsic_range(instr
);
4051 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
4052 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
4053 LLVMConstInt(ctx
->ac
.i32
, base
, false), "");
4055 /* Clamp the offset to avoid out-of-bound access because global
4056 * instructions can't handle them.
4058 LLVMValueRef size
= LLVMConstInt(ctx
->ac
.i32
, base
+ range
, false);
4059 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
,
4061 offset
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, offset
, size
, "");
4063 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->constant_data
,
4065 LLVMTypeRef comp_type
=
4066 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
4067 LLVMTypeRef vec_type
=
4068 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
4069 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
4070 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
4071 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
4072 LLVMPointerType(vec_type
, addr_space
), "");
4073 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
4077 fprintf(stderr
, "Unknown intrinsic: ");
4078 nir_print_instr(&instr
->instr
, stderr
);
4079 fprintf(stderr
, "\n");
4083 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4087 static LLVMValueRef
get_bindless_index_from_uniform(struct ac_nir_context
*ctx
,
4088 unsigned base_index
,
4089 unsigned constant_index
,
4090 LLVMValueRef dynamic_index
)
4092 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, base_index
* 4, 0);
4093 LLVMValueRef index
= LLVMBuildAdd(ctx
->ac
.builder
, dynamic_index
,
4094 LLVMConstInt(ctx
->ac
.i32
, constant_index
, 0), "");
4096 /* Bindless uniforms are 64bit so multiple index by 8 */
4097 index
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i32
, 8, 0), "");
4098 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, index
, "");
4100 LLVMValueRef ubo_index
= ctx
->abi
->load_ubo(ctx
->abi
, ctx
->ac
.i32_0
);
4102 LLVMValueRef ret
= ac_build_buffer_load(&ctx
->ac
, ubo_index
, 1, NULL
, offset
,
4103 NULL
, 0, 0, true, true);
4105 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ctx
->ac
.i32
, "");
4108 struct sampler_desc_address
{
4109 unsigned descriptor_set
;
4110 unsigned base_index
; /* binding in vulkan */
4111 unsigned constant_index
;
4112 LLVMValueRef dynamic_index
;
4117 static struct sampler_desc_address
4118 get_sampler_desc_internal(struct ac_nir_context
*ctx
,
4119 nir_deref_instr
*deref_instr
,
4120 const nir_instr
*instr
,
4123 LLVMValueRef index
= NULL
;
4124 unsigned constant_index
= 0;
4125 unsigned descriptor_set
;
4126 unsigned base_index
;
4127 bool bindless
= false;
4132 nir_intrinsic_instr
*img_instr
= nir_instr_as_intrinsic(instr
);
4135 index
= get_src(ctx
, img_instr
->src
[0]);
4137 nir_tex_instr
*tex_instr
= nir_instr_as_tex(instr
);
4138 int sampSrcIdx
= nir_tex_instr_src_index(tex_instr
,
4139 nir_tex_src_sampler_handle
);
4140 if (sampSrcIdx
!= -1) {
4143 index
= get_src(ctx
, tex_instr
->src
[sampSrcIdx
].src
);
4145 assert(tex_instr
&& !image
);
4146 base_index
= tex_instr
->sampler_index
;
4150 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
4151 if (deref_instr
->deref_type
== nir_deref_type_array
) {
4152 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
4156 if (nir_src_is_const(deref_instr
->arr
.index
)) {
4157 constant_index
+= array_size
* nir_src_as_uint(deref_instr
->arr
.index
);
4159 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
4161 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
4162 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
4167 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
4170 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
4171 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
4172 unsigned sidx
= deref_instr
->strct
.index
;
4173 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
4174 constant_index
+= glsl_get_struct_location_offset(deref_instr
->type
, sidx
);
4176 unreachable("Unsupported deref type");
4179 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
4181 if (deref_instr
->var
->data
.bindless
) {
4182 /* For now just assert on unhandled variable types */
4183 assert(deref_instr
->var
->data
.mode
== nir_var_uniform
);
4185 base_index
= deref_instr
->var
->data
.driver_location
;
4188 index
= index
? index
: ctx
->ac
.i32_0
;
4189 index
= get_bindless_index_from_uniform(ctx
, base_index
,
4190 constant_index
, index
);
4192 base_index
= deref_instr
->var
->data
.binding
;
4194 return (struct sampler_desc_address
) {
4195 .descriptor_set
= descriptor_set
,
4196 .base_index
= base_index
,
4197 .constant_index
= constant_index
,
4198 .dynamic_index
= index
,
4200 .bindless
= bindless
,
4204 /* Extract any possibly divergent index into a separate value that can be fed
4205 * into get_sampler_desc with the same arguments. */
4206 static LLVMValueRef
get_sampler_desc_index(struct ac_nir_context
*ctx
,
4207 nir_deref_instr
*deref_instr
,
4208 const nir_instr
*instr
,
4211 struct sampler_desc_address addr
= get_sampler_desc_internal(ctx
, deref_instr
, instr
, image
);
4212 return addr
.dynamic_index
;
4215 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
4216 nir_deref_instr
*deref_instr
,
4217 enum ac_descriptor_type desc_type
,
4218 const nir_instr
*instr
,
4220 bool image
, bool write
)
4222 struct sampler_desc_address addr
= get_sampler_desc_internal(ctx
, deref_instr
, instr
, image
);
4223 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
4224 addr
.descriptor_set
,
4226 addr
.constant_index
, index
,
4227 desc_type
, addr
.image
, write
, addr
.bindless
);
4230 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
4233 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
4234 * filtering manually. The driver sets img7 to a mask clearing
4235 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
4236 * s_and_b32 samp0, samp0, img7
4239 * The ANISO_OVERRIDE sampler field enables this fix in TA.
4241 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
4242 LLVMValueRef res
, LLVMValueRef samp
)
4244 LLVMBuilderRef builder
= ctx
->ac
.builder
;
4245 LLVMValueRef img7
, samp0
;
4247 if (ctx
->ac
.chip_class
>= GFX8
)
4250 img7
= LLVMBuildExtractElement(builder
, res
,
4251 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
4252 samp0
= LLVMBuildExtractElement(builder
, samp
,
4253 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
4254 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
4255 return LLVMBuildInsertElement(builder
, samp
, samp0
,
4256 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
4259 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
4260 nir_tex_instr
*instr
,
4261 struct waterfall_context
*wctx
,
4262 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
4263 LLVMValueRef
*fmask_ptr
)
4265 nir_deref_instr
*texture_deref_instr
= NULL
;
4266 nir_deref_instr
*sampler_deref_instr
= NULL
;
4269 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
4270 switch (instr
->src
[i
].src_type
) {
4271 case nir_tex_src_texture_deref
:
4272 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
4274 case nir_tex_src_sampler_deref
:
4275 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
4277 case nir_tex_src_plane
:
4278 plane
= nir_src_as_int(instr
->src
[i
].src
);
4285 if (!sampler_deref_instr
)
4286 sampler_deref_instr
= texture_deref_instr
;
4288 LLVMValueRef texture_dynamic_index
= NULL
, sampler_dynamic_index
= NULL
;
4289 if (texture_deref_instr
) {
4290 texture_dynamic_index
= get_sampler_desc_index(ctx
, texture_deref_instr
, &instr
->instr
, false);
4291 texture_dynamic_index
= enter_waterfall(ctx
, wctx
+ 0, texture_dynamic_index
, instr
->texture_non_uniform
);
4294 if (sampler_deref_instr
&& sampler_deref_instr
!= texture_deref_instr
) {
4295 sampler_dynamic_index
= get_sampler_desc_index(ctx
, sampler_deref_instr
, &instr
->instr
, false);
4296 sampler_dynamic_index
= enter_waterfall(ctx
, wctx
+ 1, sampler_dynamic_index
, instr
->sampler_non_uniform
);
4298 sampler_dynamic_index
= texture_dynamic_index
;
4300 enum ac_descriptor_type main_descriptor
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
? AC_DESC_BUFFER
: AC_DESC_IMAGE
;
4303 assert(instr
->op
!= nir_texop_txf_ms
&&
4304 instr
->op
!= nir_texop_samples_identical
);
4305 assert(instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
);
4307 main_descriptor
= AC_DESC_PLANE_0
+ plane
;
4310 if (instr
->op
== nir_texop_fragment_mask_fetch
) {
4311 /* The fragment mask is fetched from the compressed
4312 * multisampled surface.
4314 main_descriptor
= AC_DESC_FMASK
;
4317 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, main_descriptor
, &instr
->instr
,
4318 texture_dynamic_index
, false, false);
4321 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, &instr
->instr
,
4322 sampler_dynamic_index
, false, false);
4323 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
4324 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
4326 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
4327 instr
->op
== nir_texop_samples_identical
))
4328 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
,
4329 &instr
->instr
, texture_dynamic_index
, false, false);
4332 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
4335 coord
= ac_to_float(ctx
, coord
);
4336 coord
= ac_build_round(ctx
, coord
);
4337 coord
= ac_to_integer(ctx
, coord
);
4341 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
4343 LLVMValueRef result
= NULL
;
4344 struct ac_image_args args
= { 0 };
4345 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
4346 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
4347 unsigned offset_src
= 0;
4348 struct waterfall_context wctx
[2] = {{{0}}};
4350 tex_fetch_ptrs(ctx
, instr
, wctx
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
4352 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
4353 switch (instr
->src
[i
].src_type
) {
4354 case nir_tex_src_coord
: {
4355 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
4356 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
4357 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
4360 case nir_tex_src_projector
:
4362 case nir_tex_src_comparator
:
4363 if (instr
->is_shadow
) {
4364 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
4365 args
.compare
= ac_to_float(&ctx
->ac
, args
.compare
);
4368 case nir_tex_src_offset
:
4369 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
4372 case nir_tex_src_bias
:
4373 if (instr
->op
== nir_texop_txb
)
4374 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
4376 case nir_tex_src_lod
: {
4377 if (nir_src_is_const(instr
->src
[i
].src
) && nir_src_as_uint(instr
->src
[i
].src
) == 0)
4378 args
.level_zero
= true;
4380 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
4383 case nir_tex_src_ms_index
:
4384 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
4386 case nir_tex_src_ms_mcs
:
4388 case nir_tex_src_ddx
:
4389 ddx
= get_src(ctx
, instr
->src
[i
].src
);
4391 case nir_tex_src_ddy
:
4392 ddy
= get_src(ctx
, instr
->src
[i
].src
);
4394 case nir_tex_src_texture_offset
:
4395 case nir_tex_src_sampler_offset
:
4396 case nir_tex_src_plane
:
4402 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
4403 result
= get_buffer_size(ctx
, args
.resource
, true);
4407 if (instr
->op
== nir_texop_texture_samples
) {
4408 LLVMValueRef res
, samples
, is_msaa
;
4409 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
4410 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
4411 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4412 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4413 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
4414 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
4415 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4416 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
4417 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4419 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4420 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
4421 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
4422 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
4423 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
4425 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
4431 if (args
.offset
&& instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
4432 LLVMValueRef offset
[3], pack
;
4433 for (unsigned chan
= 0; chan
< 3; ++chan
)
4434 offset
[chan
] = ctx
->ac
.i32_0
;
4436 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
4437 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
4438 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
4439 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
4440 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
4442 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
4443 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
4445 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
4446 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
4450 /* Section 8.23.1 (Depth Texture Comparison Mode) of the
4451 * OpenGL 4.5 spec says:
4453 * "If the texture’s internal format indicates a fixed-point
4454 * depth texture, then D_t and D_ref are clamped to the
4455 * range [0, 1]; otherwise no clamping is performed."
4457 * TC-compatible HTILE promotes Z16 and Z24 to Z32_FLOAT,
4458 * so the depth comparison value isn't clamped for Z16 and
4459 * Z24 anymore. Do it manually here for GFX8-9; GFX10 has
4460 * an explicitly clamped 32-bit float format.
4463 ctx
->ac
.chip_class
>= GFX8
&&
4464 ctx
->ac
.chip_class
<= GFX9
&&
4465 ctx
->abi
->clamp_shadow_reference
) {
4466 LLVMValueRef upgraded
, clamped
;
4468 upgraded
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
.sampler
,
4469 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4470 upgraded
= LLVMBuildLShr(ctx
->ac
.builder
, upgraded
,
4471 LLVMConstInt(ctx
->ac
.i32
, 29, false), "");
4472 upgraded
= LLVMBuildTrunc(ctx
->ac
.builder
, upgraded
, ctx
->ac
.i1
, "");
4473 clamped
= ac_build_clamp(&ctx
->ac
, args
.compare
);
4474 args
.compare
= LLVMBuildSelect(ctx
->ac
.builder
, upgraded
, clamped
,
4478 /* pack derivatives */
4480 int num_src_deriv_channels
, num_dest_deriv_channels
;
4481 switch (instr
->sampler_dim
) {
4482 case GLSL_SAMPLER_DIM_3D
:
4483 case GLSL_SAMPLER_DIM_CUBE
:
4484 num_src_deriv_channels
= 3;
4485 num_dest_deriv_channels
= 3;
4487 case GLSL_SAMPLER_DIM_2D
:
4489 num_src_deriv_channels
= 2;
4490 num_dest_deriv_channels
= 2;
4492 case GLSL_SAMPLER_DIM_1D
:
4493 num_src_deriv_channels
= 1;
4494 if (ctx
->ac
.chip_class
== GFX9
) {
4495 num_dest_deriv_channels
= 2;
4497 num_dest_deriv_channels
= 1;
4502 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
4503 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
4504 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
4505 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
4506 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
4508 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
4509 args
.derivs
[i
] = ctx
->ac
.f32_0
;
4510 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
4514 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
4515 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
4516 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
4517 if (instr
->coord_components
== 3)
4518 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
4519 ac_prepare_cube_coords(&ctx
->ac
,
4520 instr
->op
== nir_texop_txd
, instr
->is_array
,
4521 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
4524 /* Texture coordinates fixups */
4525 if (instr
->coord_components
> 1 &&
4526 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4528 instr
->op
!= nir_texop_txf
) {
4529 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
4532 if (instr
->coord_components
> 2 &&
4533 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
4534 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
4535 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
4536 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
4538 instr
->op
!= nir_texop_txf
&&
4539 instr
->op
!= nir_texop_txf_ms
&&
4540 instr
->op
!= nir_texop_fragment_fetch
&&
4541 instr
->op
!= nir_texop_fragment_mask_fetch
) {
4542 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
4545 if (ctx
->ac
.chip_class
== GFX9
&&
4546 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4547 instr
->op
!= nir_texop_lod
) {
4548 LLVMValueRef filler
;
4549 if (instr
->op
== nir_texop_txf
)
4550 filler
= ctx
->ac
.i32_0
;
4552 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
4554 if (instr
->is_array
)
4555 args
.coords
[2] = args
.coords
[1];
4556 args
.coords
[1] = filler
;
4559 /* Pack sample index */
4560 if (sample_index
&& (instr
->op
== nir_texop_txf_ms
||
4561 instr
->op
== nir_texop_fragment_fetch
))
4562 args
.coords
[instr
->coord_components
] = sample_index
;
4564 if (instr
->op
== nir_texop_samples_identical
) {
4565 struct ac_image_args txf_args
= { 0 };
4566 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
4568 txf_args
.dmask
= 0xf;
4569 txf_args
.resource
= fmask_ptr
;
4570 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
4571 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
4573 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4574 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
4578 if ((instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
||
4579 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
) &&
4580 instr
->op
!= nir_texop_txs
&&
4581 instr
->op
!= nir_texop_fragment_fetch
&&
4582 instr
->op
!= nir_texop_fragment_mask_fetch
) {
4583 unsigned sample_chan
= instr
->is_array
? 3 : 2;
4584 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
4585 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
4586 instr
->is_array
? args
.coords
[2] : NULL
,
4587 args
.coords
[sample_chan
], fmask_ptr
);
4590 if (args
.offset
&& (instr
->op
== nir_texop_txf
|| instr
->op
== nir_texop_txf_ms
)) {
4591 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
4592 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
4593 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
4594 args
.coords
[i
] = LLVMBuildAdd(
4595 ctx
->ac
.builder
, args
.coords
[i
],
4596 LLVMConstInt(ctx
->ac
.i32
, nir_src_comp_as_uint(instr
->src
[offset_src
].src
, i
), false), "");
4601 /* DMASK was repurposed for GATHER4. 4 components are always
4602 * returned and DMASK works like a swizzle - it selects
4603 * the component to fetch. The only valid DMASK values are
4604 * 1=red, 2=green, 4=blue, 8=alpha. (e.g. 1 returns
4605 * (red,red,red,red) etc.) The ISA document doesn't mention
4609 if (instr
->op
== nir_texop_tg4
) {
4610 if (instr
->is_shadow
)
4613 args
.dmask
= 1 << instr
->component
;
4616 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
) {
4617 args
.dim
= ac_get_sampler_dim(ctx
->ac
.chip_class
, instr
->sampler_dim
, instr
->is_array
);
4618 args
.unorm
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
;
4621 /* Adjust the number of coordinates because we only need (x,y) for 2D
4622 * multisampled images and (x,y,layer) for 2D multisampled layered
4623 * images or for multisampled input attachments.
4625 if (instr
->op
== nir_texop_fragment_mask_fetch
) {
4626 if (args
.dim
== ac_image_2dmsaa
) {
4627 args
.dim
= ac_image_2d
;
4629 assert(args
.dim
== ac_image_2darraymsaa
);
4630 args
.dim
= ac_image_2darray
;
4634 result
= build_tex_intrinsic(ctx
, instr
, &args
);
4636 if (instr
->op
== nir_texop_query_levels
)
4637 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4638 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
4639 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
4640 instr
->op
!= nir_texop_tg4
)
4641 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4642 else if (instr
->op
== nir_texop_txs
&&
4643 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
4645 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4646 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
4647 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4648 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
4649 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
4650 } else if (ctx
->ac
.chip_class
== GFX9
&&
4651 instr
->op
== nir_texop_txs
&&
4652 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4654 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4655 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4656 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
4658 } else if (instr
->dest
.ssa
.num_components
!= 4)
4659 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
4663 assert(instr
->dest
.is_ssa
);
4664 result
= ac_to_integer(&ctx
->ac
, result
);
4666 for (int i
= ARRAY_SIZE(wctx
); --i
>= 0;) {
4667 result
= exit_waterfall(ctx
, wctx
+ i
, result
);
4670 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4674 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
4676 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
4677 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
4679 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4680 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
4683 static void visit_post_phi(struct ac_nir_context
*ctx
,
4684 nir_phi_instr
*instr
,
4685 LLVMValueRef llvm_phi
)
4687 nir_foreach_phi_src(src
, instr
) {
4688 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
4689 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
4691 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
4695 static void phi_post_pass(struct ac_nir_context
*ctx
)
4697 hash_table_foreach(ctx
->phis
, entry
) {
4698 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
4699 (LLVMValueRef
)entry
->data
);
4704 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
4705 const nir_ssa_undef_instr
*instr
)
4707 unsigned num_components
= instr
->def
.num_components
;
4708 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
4711 if (num_components
== 1)
4712 undef
= LLVMGetUndef(type
);
4714 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
4716 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
4719 static void visit_jump(struct ac_llvm_context
*ctx
,
4720 const nir_jump_instr
*instr
)
4722 switch (instr
->type
) {
4723 case nir_jump_break
:
4724 ac_build_break(ctx
);
4726 case nir_jump_continue
:
4727 ac_build_continue(ctx
);
4730 fprintf(stderr
, "Unknown NIR jump instr: ");
4731 nir_print_instr(&instr
->instr
, stderr
);
4732 fprintf(stderr
, "\n");
4738 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
4739 enum glsl_base_type type
)
4743 case GLSL_TYPE_UINT
:
4744 case GLSL_TYPE_BOOL
:
4745 case GLSL_TYPE_SUBROUTINE
:
4747 case GLSL_TYPE_INT8
:
4748 case GLSL_TYPE_UINT8
:
4750 case GLSL_TYPE_INT16
:
4751 case GLSL_TYPE_UINT16
:
4753 case GLSL_TYPE_FLOAT
:
4755 case GLSL_TYPE_FLOAT16
:
4757 case GLSL_TYPE_INT64
:
4758 case GLSL_TYPE_UINT64
:
4760 case GLSL_TYPE_DOUBLE
:
4763 unreachable("unknown GLSL type");
4768 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
4769 const struct glsl_type
*type
)
4771 if (glsl_type_is_scalar(type
)) {
4772 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
4775 if (glsl_type_is_vector(type
)) {
4776 return LLVMVectorType(
4777 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
4778 glsl_get_vector_elements(type
));
4781 if (glsl_type_is_matrix(type
)) {
4782 return LLVMArrayType(
4783 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
4784 glsl_get_matrix_columns(type
));
4787 if (glsl_type_is_array(type
)) {
4788 return LLVMArrayType(
4789 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
4790 glsl_get_length(type
));
4793 assert(glsl_type_is_struct_or_ifc(type
));
4795 LLVMTypeRef member_types
[glsl_get_length(type
)];
4797 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
4799 glsl_to_llvm_type(ac
,
4800 glsl_get_struct_field(type
, i
));
4803 return LLVMStructTypeInContext(ac
->context
, member_types
,
4804 glsl_get_length(type
), false);
4807 static void visit_deref(struct ac_nir_context
*ctx
,
4808 nir_deref_instr
*instr
)
4810 if (instr
->mode
!= nir_var_mem_shared
&&
4811 instr
->mode
!= nir_var_mem_global
)
4814 LLVMValueRef result
= NULL
;
4815 switch(instr
->deref_type
) {
4816 case nir_deref_type_var
: {
4817 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
4818 result
= entry
->data
;
4821 case nir_deref_type_struct
:
4822 if (instr
->mode
== nir_var_mem_global
) {
4823 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4824 uint64_t offset
= glsl_get_struct_field_offset(parent
->type
,
4825 instr
->strct
.index
);
4826 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4827 LLVMConstInt(ctx
->ac
.i32
, offset
, 0));
4829 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4830 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
4833 case nir_deref_type_array
:
4834 if (instr
->mode
== nir_var_mem_global
) {
4835 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
4836 unsigned stride
= glsl_get_explicit_stride(parent
->type
);
4838 if ((glsl_type_is_matrix(parent
->type
) &&
4839 glsl_matrix_type_is_row_major(parent
->type
)) ||
4840 (glsl_type_is_vector(parent
->type
) && stride
== 0))
4841 stride
= type_scalar_size_bytes(parent
->type
);
4844 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4845 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4846 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4848 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4850 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4852 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4853 get_src(ctx
, instr
->arr
.index
));
4856 case nir_deref_type_ptr_as_array
:
4857 if (instr
->mode
== nir_var_mem_global
) {
4858 unsigned stride
= nir_deref_instr_ptr_as_array_stride(instr
);
4860 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
4861 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
4862 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
4864 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
4866 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
4868 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
4869 get_src(ctx
, instr
->arr
.index
));
4872 case nir_deref_type_cast
: {
4873 result
= get_src(ctx
, instr
->parent
);
4875 /* We can't use the structs from LLVM because the shader
4876 * specifies its own offsets. */
4877 LLVMTypeRef pointee_type
= ctx
->ac
.i8
;
4878 if (instr
->mode
== nir_var_mem_shared
)
4879 pointee_type
= glsl_to_llvm_type(&ctx
->ac
, instr
->type
);
4881 unsigned address_space
;
4883 switch(instr
->mode
) {
4884 case nir_var_mem_shared
:
4885 address_space
= AC_ADDR_SPACE_LDS
;
4887 case nir_var_mem_global
:
4888 address_space
= AC_ADDR_SPACE_GLOBAL
;
4891 unreachable("Unhandled address space");
4894 LLVMTypeRef type
= LLVMPointerType(pointee_type
, address_space
);
4896 if (LLVMTypeOf(result
) != type
) {
4897 if (LLVMGetTypeKind(LLVMTypeOf(result
)) == LLVMVectorTypeKind
) {
4898 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
,
4901 result
= LLVMBuildIntToPtr(ctx
->ac
.builder
, result
,
4908 unreachable("Unhandled deref_instr deref type");
4911 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4914 static void visit_cf_list(struct ac_nir_context
*ctx
,
4915 struct exec_list
*list
);
4917 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
4919 nir_foreach_instr(instr
, block
)
4921 switch (instr
->type
) {
4922 case nir_instr_type_alu
:
4923 visit_alu(ctx
, nir_instr_as_alu(instr
));
4925 case nir_instr_type_load_const
:
4926 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
4928 case nir_instr_type_intrinsic
:
4929 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
4931 case nir_instr_type_tex
:
4932 visit_tex(ctx
, nir_instr_as_tex(instr
));
4934 case nir_instr_type_phi
:
4935 visit_phi(ctx
, nir_instr_as_phi(instr
));
4937 case nir_instr_type_ssa_undef
:
4938 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
4940 case nir_instr_type_jump
:
4941 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
4943 case nir_instr_type_deref
:
4944 visit_deref(ctx
, nir_instr_as_deref(instr
));
4947 fprintf(stderr
, "Unknown NIR instr type: ");
4948 nir_print_instr(instr
, stderr
);
4949 fprintf(stderr
, "\n");
4954 _mesa_hash_table_insert(ctx
->defs
, block
,
4955 LLVMGetInsertBlock(ctx
->ac
.builder
));
4958 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
4960 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
4962 nir_block
*then_block
=
4963 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
4965 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
4967 visit_cf_list(ctx
, &if_stmt
->then_list
);
4969 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
4970 nir_block
*else_block
=
4971 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
4973 ac_build_else(&ctx
->ac
, else_block
->index
);
4974 visit_cf_list(ctx
, &if_stmt
->else_list
);
4977 ac_build_endif(&ctx
->ac
, then_block
->index
);
4980 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
4982 nir_block
*first_loop_block
=
4983 (nir_block
*) exec_list_get_head(&loop
->body
);
4985 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
4987 visit_cf_list(ctx
, &loop
->body
);
4989 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
4992 static void visit_cf_list(struct ac_nir_context
*ctx
,
4993 struct exec_list
*list
)
4995 foreach_list_typed(nir_cf_node
, node
, node
, list
)
4997 switch (node
->type
) {
4998 case nir_cf_node_block
:
4999 visit_block(ctx
, nir_cf_node_as_block(node
));
5002 case nir_cf_node_if
:
5003 visit_if(ctx
, nir_cf_node_as_if(node
));
5006 case nir_cf_node_loop
:
5007 visit_loop(ctx
, nir_cf_node_as_loop(node
));
5017 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
5018 struct ac_shader_abi
*abi
,
5019 struct nir_shader
*nir
,
5020 struct nir_variable
*variable
,
5021 gl_shader_stage stage
)
5023 unsigned output_loc
= variable
->data
.driver_location
/ 4;
5024 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
5026 /* tess ctrl has it's own load/store paths for outputs */
5027 if (stage
== MESA_SHADER_TESS_CTRL
)
5030 if (stage
== MESA_SHADER_VERTEX
||
5031 stage
== MESA_SHADER_TESS_EVAL
||
5032 stage
== MESA_SHADER_GEOMETRY
) {
5033 int idx
= variable
->data
.location
+ variable
->data
.index
;
5034 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
5035 int length
= nir
->info
.clip_distance_array_size
+
5036 nir
->info
.cull_distance_array_size
;
5045 bool is_16bit
= glsl_type_is_16bit(glsl_without_array(variable
->type
));
5046 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
5047 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
5048 for (unsigned chan
= 0; chan
< 4; chan
++) {
5049 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
5050 ac_build_alloca_undef(ctx
, type
, "");
5056 setup_locals(struct ac_nir_context
*ctx
,
5057 struct nir_function
*func
)
5060 ctx
->num_locals
= 0;
5061 nir_foreach_variable(variable
, &func
->impl
->locals
) {
5062 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
5063 variable
->data
.driver_location
= ctx
->num_locals
* 4;
5064 variable
->data
.location_frac
= 0;
5065 ctx
->num_locals
+= attrib_count
;
5067 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
5071 for (i
= 0; i
< ctx
->num_locals
; i
++) {
5072 for (j
= 0; j
< 4; j
++) {
5073 ctx
->locals
[i
* 4 + j
] =
5074 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
5080 setup_scratch(struct ac_nir_context
*ctx
,
5081 struct nir_shader
*shader
)
5083 if (shader
->scratch_size
== 0)
5086 ctx
->scratch
= ac_build_alloca_undef(&ctx
->ac
,
5087 LLVMArrayType(ctx
->ac
.i8
, shader
->scratch_size
),
5092 setup_constant_data(struct ac_nir_context
*ctx
,
5093 struct nir_shader
*shader
)
5095 if (!shader
->constant_data
)
5099 LLVMConstStringInContext(ctx
->ac
.context
,
5100 shader
->constant_data
,
5101 shader
->constant_data_size
,
5103 LLVMTypeRef type
= LLVMArrayType(ctx
->ac
.i8
, shader
->constant_data_size
);
5105 /* We want to put the constant data in the CONST address space so that
5106 * we can use scalar loads. However, LLVM versions before 10 put these
5107 * variables in the same section as the code, which is unacceptable
5108 * for RadeonSI as it needs to relocate all the data sections after
5109 * the code sections. See https://reviews.llvm.org/D65813.
5111 unsigned address_space
=
5112 LLVM_VERSION_MAJOR
< 10 ? AC_ADDR_SPACE_GLOBAL
: AC_ADDR_SPACE_CONST
;
5114 LLVMValueRef global
=
5115 LLVMAddGlobalInAddressSpace(ctx
->ac
.module
, type
,
5119 LLVMSetInitializer(global
, data
);
5120 LLVMSetGlobalConstant(global
, true);
5121 LLVMSetVisibility(global
, LLVMHiddenVisibility
);
5122 ctx
->constant_data
= global
;
5126 setup_shared(struct ac_nir_context
*ctx
,
5127 struct nir_shader
*nir
)
5132 LLVMTypeRef type
= LLVMArrayType(ctx
->ac
.i8
,
5133 nir
->info
.cs
.shared_size
);
5136 LLVMAddGlobalInAddressSpace(ctx
->ac
.module
, type
,
5139 LLVMSetAlignment(lds
, 64 * 1024);
5141 ctx
->ac
.lds
= LLVMBuildBitCast(ctx
->ac
.builder
, lds
,
5142 LLVMPointerType(ctx
->ac
.i8
,
5143 AC_ADDR_SPACE_LDS
), "");
5146 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
5147 const struct ac_shader_args
*args
, struct nir_shader
*nir
)
5149 struct ac_nir_context ctx
= {};
5150 struct nir_function
*func
;
5156 ctx
.stage
= nir
->info
.stage
;
5157 ctx
.info
= &nir
->info
;
5159 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
5161 nir_foreach_variable(variable
, &nir
->outputs
)
5162 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
5165 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5166 _mesa_key_pointer_equal
);
5167 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5168 _mesa_key_pointer_equal
);
5169 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5170 _mesa_key_pointer_equal
);
5172 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
5174 nir_index_ssa_defs(func
->impl
);
5175 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
5177 setup_locals(&ctx
, func
);
5178 setup_scratch(&ctx
, nir
);
5179 setup_constant_data(&ctx
, nir
);
5181 if (gl_shader_stage_is_compute(nir
->info
.stage
))
5182 setup_shared(&ctx
, nir
);
5184 if (nir
->info
.stage
== MESA_SHADER_FRAGMENT
&& nir
->info
.fs
.uses_demote
) {
5185 ctx
.ac
.postponed_kill
= ac_build_alloca_undef(&ctx
.ac
, ac
->i1
, "");
5186 /* true = don't kill. */
5187 LLVMBuildStore(ctx
.ac
.builder
, ctx
.ac
.i1true
, ctx
.ac
.postponed_kill
);
5190 visit_cf_list(&ctx
, &func
->impl
->body
);
5191 phi_post_pass(&ctx
);
5193 if (ctx
.ac
.postponed_kill
)
5194 ac_build_kill_if_false(&ctx
.ac
, LLVMBuildLoad(ctx
.ac
.builder
,
5195 ctx
.ac
.postponed_kill
, ""));
5197 if (!gl_shader_stage_is_compute(nir
->info
.stage
))
5198 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
5203 ralloc_free(ctx
.defs
);
5204 ralloc_free(ctx
.phis
);
5205 ralloc_free(ctx
.vars
);
5209 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
5211 bool progress
= false;
5213 /* Lower large variables to scratch first so that we won't bloat the
5214 * shader by generating large if ladders for them. We later lower
5215 * scratch to alloca's, assuming LLVM won't generate VGPR indexing.
5217 NIR_PASS(progress
, nir
, nir_lower_vars_to_scratch
,
5218 nir_var_function_temp
,
5220 glsl_get_natural_size_align_bytes
);
5222 /* While it would be nice not to have this flag, we are constrained
5223 * by the reality that LLVM 9.0 has buggy VGPR indexing on GFX9.
5225 bool llvm_has_working_vgpr_indexing
= chip_class
!= GFX9
;
5227 /* TODO: Indirect indexing of GS inputs is unimplemented.
5229 * TCS and TES load inputs directly from LDS or offchip memory, so
5230 * indirect indexing is trivial.
5232 nir_variable_mode indirect_mask
= 0;
5233 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
5234 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
5235 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
5236 !llvm_has_working_vgpr_indexing
)) {
5237 indirect_mask
|= nir_var_shader_in
;
5239 if (!llvm_has_working_vgpr_indexing
&&
5240 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
5241 indirect_mask
|= nir_var_shader_out
;
5243 /* TODO: We shouldn't need to do this, however LLVM isn't currently
5244 * smart enough to handle indirects without causing excess spilling
5245 * causing the gpu to hang.
5247 * See the following thread for more details of the problem:
5248 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
5250 indirect_mask
|= nir_var_function_temp
;
5252 progress
|= nir_lower_indirect_derefs(nir
, indirect_mask
);
5257 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
5259 if (intrin
->intrinsic
!= nir_intrinsic_store_deref
)
5263 nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[0]));
5265 if (var
->data
.mode
!= nir_var_shader_out
)
5268 unsigned writemask
= 0;
5269 const int location
= var
->data
.location
;
5270 unsigned first_component
= var
->data
.location_frac
;
5271 unsigned num_comps
= intrin
->dest
.ssa
.num_components
;
5273 if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
5274 writemask
= ((1 << (num_comps
+ 1)) - 1) << first_component
;
5275 else if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
5276 writemask
= (((1 << (num_comps
+ 1)) - 1) << first_component
) << 4;
5282 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
5283 unsigned *cond_block_tf_writemask
,
5284 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
5286 switch (cf_node
->type
) {
5287 case nir_cf_node_block
: {
5288 nir_block
*block
= nir_cf_node_as_block(cf_node
);
5289 nir_foreach_instr(instr
, block
) {
5290 if (instr
->type
!= nir_instr_type_intrinsic
)
5293 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
5294 if (intrin
->intrinsic
== nir_intrinsic_control_barrier
) {
5296 /* If we find a barrier in nested control flow put this in the
5297 * too hard basket. In GLSL this is not possible but it is in
5301 *tessfactors_are_def_in_all_invocs
= false;
5305 /* The following case must be prevented:
5306 * gl_TessLevelInner = ...;
5308 * if (gl_InvocationID == 1)
5309 * gl_TessLevelInner = ...;
5311 * If you consider disjoint code segments separated by barriers, each
5312 * such segment that writes tess factor channels should write the same
5313 * channels in all codepaths within that segment.
5315 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
5316 /* Accumulate the result: */
5317 *tessfactors_are_def_in_all_invocs
&=
5318 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
5320 /* Analyze the next code segment from scratch. */
5321 *upper_block_tf_writemask
= 0;
5322 *cond_block_tf_writemask
= 0;
5325 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
5330 case nir_cf_node_if
: {
5331 unsigned then_tessfactor_writemask
= 0;
5332 unsigned else_tessfactor_writemask
= 0;
5334 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
5335 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
5336 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
5337 cond_block_tf_writemask
,
5338 tessfactors_are_def_in_all_invocs
, true);
5341 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
5342 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
5343 cond_block_tf_writemask
,
5344 tessfactors_are_def_in_all_invocs
, true);
5347 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
5348 /* If both statements write the same tess factor channels,
5349 * we can say that the upper block writes them too.
5351 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
5352 else_tessfactor_writemask
;
5353 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
5354 else_tessfactor_writemask
;
5359 case nir_cf_node_loop
: {
5360 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
5361 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
5362 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
5363 cond_block_tf_writemask
,
5364 tessfactors_are_def_in_all_invocs
, true);
5370 unreachable("unknown cf node type");
5375 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
5377 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
5379 /* The pass works as follows:
5380 * If all codepaths write tess factors, we can say that all
5381 * invocations define tess factors.
5383 * Each tess factor channel is tracked separately.
5385 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
5386 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
5388 /* Initial value = true. Here the pass will accumulate results from
5389 * multiple segments surrounded by barriers. If tess factors aren't
5390 * written at all, it's a shader bug and we don't care if this will be
5393 bool tessfactors_are_def_in_all_invocs
= true;
5395 nir_foreach_function(function
, nir
) {
5396 if (function
->impl
) {
5397 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
5398 scan_tess_ctrl(node
, &main_block_tf_writemask
,
5399 &cond_block_tf_writemask
,
5400 &tessfactors_are_def_in_all_invocs
,
5406 /* Accumulate the result for the last code segment separated by a
5409 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
5410 tessfactors_are_def_in_all_invocs
&=
5411 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
5414 return tessfactors_are_def_in_all_invocs
;