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
;
54 struct hash_table
*verified_interp
;
56 LLVMValueRef main_function
;
57 LLVMBasicBlockRef continue_block
;
58 LLVMBasicBlockRef break_block
;
64 static LLVMValueRef
get_sampler_desc_index(struct ac_nir_context
*ctx
,
65 nir_deref_instr
*deref_instr
,
66 const nir_instr
*instr
,
69 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
70 nir_deref_instr
*deref_instr
,
71 enum ac_descriptor_type desc_type
,
72 const nir_instr
*instr
,
74 bool image
, bool write
);
77 build_store_values_extended(struct ac_llvm_context
*ac
,
80 unsigned value_stride
,
83 LLVMBuilderRef builder
= ac
->builder
;
86 for (i
= 0; i
< value_count
; i
++) {
87 LLVMValueRef ptr
= values
[i
* value_stride
];
88 LLVMValueRef index
= LLVMConstInt(ac
->i32
, i
, false);
89 LLVMValueRef value
= LLVMBuildExtractElement(builder
, vec
, index
, "");
90 LLVMBuildStore(builder
, value
, ptr
);
94 static LLVMTypeRef
get_def_type(struct ac_nir_context
*ctx
,
95 const nir_ssa_def
*def
)
97 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, def
->bit_size
);
98 if (def
->num_components
> 1) {
99 type
= LLVMVectorType(type
, def
->num_components
);
104 static LLVMValueRef
get_src(struct ac_nir_context
*nir
, nir_src src
)
107 return nir
->ssa_defs
[src
.ssa
->index
];
111 get_memory_ptr(struct ac_nir_context
*ctx
, nir_src src
, unsigned bit_size
)
113 LLVMValueRef ptr
= get_src(ctx
, src
);
114 ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ctx
->ac
.lds
, &ptr
, 1, "");
115 int addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
117 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, bit_size
);
119 return LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
120 LLVMPointerType(type
, addr_space
), "");
123 static LLVMBasicBlockRef
get_block(struct ac_nir_context
*nir
,
124 const struct nir_block
*b
)
126 struct hash_entry
*entry
= _mesa_hash_table_search(nir
->defs
, b
);
127 return (LLVMBasicBlockRef
)entry
->data
;
130 static LLVMValueRef
get_alu_src(struct ac_nir_context
*ctx
,
132 unsigned num_components
)
134 LLVMValueRef value
= get_src(ctx
, src
.src
);
135 bool need_swizzle
= false;
138 unsigned src_components
= ac_get_llvm_num_components(value
);
139 for (unsigned i
= 0; i
< num_components
; ++i
) {
140 assert(src
.swizzle
[i
] < src_components
);
141 if (src
.swizzle
[i
] != i
)
145 if (need_swizzle
|| num_components
!= src_components
) {
146 LLVMValueRef masks
[] = {
147 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[0], false),
148 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[1], false),
149 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[2], false),
150 LLVMConstInt(ctx
->ac
.i32
, src
.swizzle
[3], false)};
152 if (src_components
> 1 && num_components
== 1) {
153 value
= LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
155 } else if (src_components
== 1 && num_components
> 1) {
156 LLVMValueRef values
[] = {value
, value
, value
, value
};
157 value
= ac_build_gather_values(&ctx
->ac
, values
, num_components
);
159 LLVMValueRef swizzle
= LLVMConstVector(masks
, num_components
);
160 value
= LLVMBuildShuffleVector(ctx
->ac
.builder
, value
, value
,
169 static LLVMValueRef
emit_int_cmp(struct ac_llvm_context
*ctx
,
170 LLVMIntPredicate pred
, LLVMValueRef src0
,
173 LLVMTypeRef src0_type
= LLVMTypeOf(src0
);
174 LLVMTypeRef src1_type
= LLVMTypeOf(src1
);
176 if (LLVMGetTypeKind(src0_type
) == LLVMPointerTypeKind
&&
177 LLVMGetTypeKind(src1_type
) != LLVMPointerTypeKind
) {
178 src1
= LLVMBuildIntToPtr(ctx
->builder
, src1
, src0_type
, "");
179 } else if (LLVMGetTypeKind(src1_type
) == LLVMPointerTypeKind
&&
180 LLVMGetTypeKind(src0_type
) != LLVMPointerTypeKind
) {
181 src0
= LLVMBuildIntToPtr(ctx
->builder
, src0
, src1_type
, "");
184 LLVMValueRef result
= LLVMBuildICmp(ctx
->builder
, pred
, src0
, src1
, "");
185 return LLVMBuildSelect(ctx
->builder
, result
,
186 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
190 static LLVMValueRef
emit_float_cmp(struct ac_llvm_context
*ctx
,
191 LLVMRealPredicate pred
, LLVMValueRef src0
,
195 src0
= ac_to_float(ctx
, src0
);
196 src1
= ac_to_float(ctx
, src1
);
197 result
= LLVMBuildFCmp(ctx
->builder
, pred
, src0
, src1
, "");
198 return LLVMBuildSelect(ctx
->builder
, result
,
199 LLVMConstInt(ctx
->i32
, 0xFFFFFFFF, false),
203 static LLVMValueRef
emit_intrin_1f_param(struct ac_llvm_context
*ctx
,
205 LLVMTypeRef result_type
,
208 char name
[64], type
[64];
209 LLVMValueRef params
[] = {
210 ac_to_float(ctx
, src0
),
213 ac_build_type_name_for_intr(LLVMTypeOf(params
[0]), type
, sizeof(type
));
214 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.%s", intrin
, type
);
215 assert(length
< sizeof(name
));
216 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 1, AC_FUNC_ATTR_READNONE
);
219 static LLVMValueRef
emit_intrin_2f_param(struct ac_llvm_context
*ctx
,
221 LLVMTypeRef result_type
,
222 LLVMValueRef src0
, LLVMValueRef src1
)
224 char name
[64], type
[64];
225 LLVMValueRef params
[] = {
226 ac_to_float(ctx
, src0
),
227 ac_to_float(ctx
, src1
),
230 ac_build_type_name_for_intr(LLVMTypeOf(params
[0]), type
, sizeof(type
));
231 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.%s", intrin
, type
);
232 assert(length
< sizeof(name
));
233 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 2, AC_FUNC_ATTR_READNONE
);
236 static LLVMValueRef
emit_intrin_3f_param(struct ac_llvm_context
*ctx
,
238 LLVMTypeRef result_type
,
239 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
241 char name
[64], type
[64];
242 LLVMValueRef params
[] = {
243 ac_to_float(ctx
, src0
),
244 ac_to_float(ctx
, src1
),
245 ac_to_float(ctx
, src2
),
248 ac_build_type_name_for_intr(LLVMTypeOf(params
[0]), type
, sizeof(type
));
249 ASSERTED
const int length
= snprintf(name
, sizeof(name
), "%s.%s", intrin
, type
);
250 assert(length
< sizeof(name
));
251 return ac_build_intrinsic(ctx
, name
, result_type
, params
, 3, AC_FUNC_ATTR_READNONE
);
254 static LLVMValueRef
emit_bcsel(struct ac_llvm_context
*ctx
,
255 LLVMValueRef src0
, LLVMValueRef src1
, LLVMValueRef src2
)
257 LLVMTypeRef src1_type
= LLVMTypeOf(src1
);
258 LLVMTypeRef src2_type
= LLVMTypeOf(src2
);
260 assert(LLVMGetTypeKind(LLVMTypeOf(src0
)) != LLVMVectorTypeKind
);
262 if (LLVMGetTypeKind(src1_type
) == LLVMPointerTypeKind
&&
263 LLVMGetTypeKind(src2_type
) != LLVMPointerTypeKind
) {
264 src2
= LLVMBuildIntToPtr(ctx
->builder
, src2
, src1_type
, "");
265 } else if (LLVMGetTypeKind(src2_type
) == LLVMPointerTypeKind
&&
266 LLVMGetTypeKind(src1_type
) != LLVMPointerTypeKind
) {
267 src1
= LLVMBuildIntToPtr(ctx
->builder
, src1
, src2_type
, "");
270 LLVMValueRef v
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
,
272 return LLVMBuildSelect(ctx
->builder
, v
,
273 ac_to_integer_or_pointer(ctx
, src1
),
274 ac_to_integer_or_pointer(ctx
, src2
), "");
277 static LLVMValueRef
emit_iabs(struct ac_llvm_context
*ctx
,
280 return ac_build_imax(ctx
, src0
, LLVMBuildNeg(ctx
->builder
, src0
, ""));
283 static LLVMValueRef
emit_uint_carry(struct ac_llvm_context
*ctx
,
285 LLVMValueRef src0
, LLVMValueRef src1
)
287 LLVMTypeRef ret_type
;
288 LLVMTypeRef types
[] = { ctx
->i32
, ctx
->i1
};
290 LLVMValueRef params
[] = { src0
, src1
};
291 ret_type
= LLVMStructTypeInContext(ctx
->context
, types
,
294 res
= ac_build_intrinsic(ctx
, intrin
, ret_type
,
295 params
, 2, AC_FUNC_ATTR_READNONE
);
297 res
= LLVMBuildExtractValue(ctx
->builder
, res
, 1, "");
298 res
= LLVMBuildZExt(ctx
->builder
, res
, ctx
->i32
, "");
302 static LLVMValueRef
emit_b2f(struct ac_llvm_context
*ctx
,
306 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
,
307 LLVMBuildBitCast(ctx
->builder
, LLVMConstReal(ctx
->f32
, 1.0), ctx
->i32
, ""),
309 result
= LLVMBuildBitCast(ctx
->builder
, result
, ctx
->f32
, "");
313 return LLVMBuildFPTrunc(ctx
->builder
, result
, ctx
->f16
, "");
317 return LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f64
, "");
319 unreachable("Unsupported bit size.");
323 static LLVMValueRef
emit_f2b(struct ac_llvm_context
*ctx
,
326 src0
= ac_to_float(ctx
, src0
);
327 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
328 return LLVMBuildSExt(ctx
->builder
,
329 LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
, src0
, zero
, ""),
333 static LLVMValueRef
emit_b2i(struct ac_llvm_context
*ctx
,
337 LLVMValueRef result
= LLVMBuildAnd(ctx
->builder
, src0
, ctx
->i32_1
, "");
341 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i8
, "");
343 return LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i16
, "");
347 return LLVMBuildZExt(ctx
->builder
, result
, ctx
->i64
, "");
349 unreachable("Unsupported bit size.");
353 static LLVMValueRef
emit_i2b(struct ac_llvm_context
*ctx
,
356 LLVMValueRef zero
= LLVMConstNull(LLVMTypeOf(src0
));
357 return LLVMBuildSExt(ctx
->builder
,
358 LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src0
, zero
, ""),
362 static LLVMValueRef
emit_f2f16(struct ac_llvm_context
*ctx
,
366 LLVMValueRef cond
= NULL
;
368 src0
= ac_to_float(ctx
, src0
);
369 result
= LLVMBuildFPTrunc(ctx
->builder
, src0
, ctx
->f16
, "");
371 if (ctx
->chip_class
>= GFX8
) {
372 LLVMValueRef args
[2];
373 /* Check if the result is a denormal - and flush to 0 if so. */
375 args
[1] = LLVMConstInt(ctx
->i32
, N_SUBNORMAL
| P_SUBNORMAL
, false);
376 cond
= ac_build_intrinsic(ctx
, "llvm.amdgcn.class.f16", ctx
->i1
, args
, 2, AC_FUNC_ATTR_READNONE
);
379 /* need to convert back up to f32 */
380 result
= LLVMBuildFPExt(ctx
->builder
, result
, ctx
->f32
, "");
382 if (ctx
->chip_class
>= GFX8
)
383 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
386 /* 0x38800000 is smallest half float value (2^-14) in 32-bit float,
387 * so compare the result and flush to 0 if it's smaller.
389 LLVMValueRef temp
, cond2
;
390 temp
= emit_intrin_1f_param(ctx
, "llvm.fabs", ctx
->f32
, result
);
391 cond
= LLVMBuildFCmp(ctx
->builder
, LLVMRealOGT
,
392 LLVMBuildBitCast(ctx
->builder
, LLVMConstInt(ctx
->i32
, 0x38800000, false), ctx
->f32
, ""),
394 cond2
= LLVMBuildFCmp(ctx
->builder
, LLVMRealONE
,
395 temp
, ctx
->f32_0
, "");
396 cond
= LLVMBuildAnd(ctx
->builder
, cond
, cond2
, "");
397 result
= LLVMBuildSelect(ctx
->builder
, cond
, ctx
->f32_0
, result
, "");
402 static LLVMValueRef
emit_umul_high(struct ac_llvm_context
*ctx
,
403 LLVMValueRef src0
, LLVMValueRef src1
)
405 LLVMValueRef dst64
, result
;
406 src0
= LLVMBuildZExt(ctx
->builder
, src0
, ctx
->i64
, "");
407 src1
= LLVMBuildZExt(ctx
->builder
, src1
, ctx
->i64
, "");
409 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
410 dst64
= LLVMBuildLShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
411 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
415 static LLVMValueRef
emit_imul_high(struct ac_llvm_context
*ctx
,
416 LLVMValueRef src0
, LLVMValueRef src1
)
418 LLVMValueRef dst64
, result
;
419 src0
= LLVMBuildSExt(ctx
->builder
, src0
, ctx
->i64
, "");
420 src1
= LLVMBuildSExt(ctx
->builder
, src1
, ctx
->i64
, "");
422 dst64
= LLVMBuildMul(ctx
->builder
, src0
, src1
, "");
423 dst64
= LLVMBuildAShr(ctx
->builder
, dst64
, LLVMConstInt(ctx
->i64
, 32, false), "");
424 result
= LLVMBuildTrunc(ctx
->builder
, dst64
, ctx
->i32
, "");
428 static LLVMValueRef
emit_bfm(struct ac_llvm_context
*ctx
,
429 LLVMValueRef bits
, LLVMValueRef offset
)
431 /* mask = ((1 << bits) - 1) << offset */
432 return LLVMBuildShl(ctx
->builder
,
433 LLVMBuildSub(ctx
->builder
,
434 LLVMBuildShl(ctx
->builder
,
441 static LLVMValueRef
emit_bitfield_select(struct ac_llvm_context
*ctx
,
442 LLVMValueRef mask
, LLVMValueRef insert
,
446 * (mask & insert) | (~mask & base) = base ^ (mask & (insert ^ base))
447 * Use the right-hand side, which the LLVM backend can convert to V_BFI.
449 return LLVMBuildXor(ctx
->builder
, base
,
450 LLVMBuildAnd(ctx
->builder
, mask
,
451 LLVMBuildXor(ctx
->builder
, insert
, base
, ""), ""), "");
454 static LLVMValueRef
emit_pack_2x16(struct ac_llvm_context
*ctx
,
456 LLVMValueRef (*pack
)(struct ac_llvm_context
*ctx
,
457 LLVMValueRef args
[2]))
459 LLVMValueRef comp
[2];
461 src0
= ac_to_float(ctx
, src0
);
462 comp
[0] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_0
, "");
463 comp
[1] = LLVMBuildExtractElement(ctx
->builder
, src0
, ctx
->i32_1
, "");
465 return LLVMBuildBitCast(ctx
->builder
, pack(ctx
, comp
), ctx
->i32
, "");
468 static LLVMValueRef
emit_unpack_half_2x16(struct ac_llvm_context
*ctx
,
471 LLVMValueRef const16
= LLVMConstInt(ctx
->i32
, 16, false);
472 LLVMValueRef temps
[2], val
;
475 for (i
= 0; i
< 2; i
++) {
476 val
= i
== 1 ? LLVMBuildLShr(ctx
->builder
, src0
, const16
, "") : src0
;
477 val
= LLVMBuildTrunc(ctx
->builder
, val
, ctx
->i16
, "");
478 val
= LLVMBuildBitCast(ctx
->builder
, val
, ctx
->f16
, "");
479 temps
[i
] = LLVMBuildFPExt(ctx
->builder
, val
, ctx
->f32
, "");
481 return ac_build_gather_values(ctx
, temps
, 2);
484 static LLVMValueRef
emit_ddxy(struct ac_nir_context
*ctx
,
492 if (op
== nir_op_fddx_fine
)
493 mask
= AC_TID_MASK_LEFT
;
494 else if (op
== nir_op_fddy_fine
)
495 mask
= AC_TID_MASK_TOP
;
497 mask
= AC_TID_MASK_TOP_LEFT
;
499 /* for DDX we want to next X pixel, DDY next Y pixel. */
500 if (op
== nir_op_fddx_fine
||
501 op
== nir_op_fddx_coarse
||
507 result
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, src0
);
511 struct waterfall_context
{
512 LLVMBasicBlockRef phi_bb
[2];
516 /* To deal with divergent descriptors we can create a loop that handles all
517 * lanes with the same descriptor on a given iteration (henceforth a
520 * These helper create the begin and end of the loop leaving the caller
521 * to implement the body.
524 * - ctx is the usal nir context
525 * - wctx is a temporary struct containing some loop info. Can be left uninitialized.
526 * - value is the possibly divergent value for which we built the loop
527 * - divergent is whether value is actually divergent. If false we just pass
530 static LLVMValueRef
enter_waterfall(struct ac_nir_context
*ctx
,
531 struct waterfall_context
*wctx
,
532 LLVMValueRef value
, bool divergent
)
534 /* If the app claims the value is divergent but it is constant we can
535 * end up with a dynamic index of NULL. */
539 wctx
->use_waterfall
= divergent
;
543 ac_build_bgnloop(&ctx
->ac
, 6000);
545 LLVMValueRef scalar_value
= ac_build_readlane(&ctx
->ac
, value
, NULL
);
547 LLVMValueRef active
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, value
,
548 scalar_value
, "uniform_active");
550 wctx
->phi_bb
[0] = LLVMGetInsertBlock(ctx
->ac
.builder
);
551 ac_build_ifcc(&ctx
->ac
, active
, 6001);
556 static LLVMValueRef
exit_waterfall(struct ac_nir_context
*ctx
,
557 struct waterfall_context
*wctx
,
560 LLVMValueRef ret
= NULL
;
561 LLVMValueRef phi_src
[2];
562 LLVMValueRef cc_phi_src
[2] = {
563 LLVMConstInt(ctx
->ac
.i32
, 0, false),
564 LLVMConstInt(ctx
->ac
.i32
, 0xffffffff, false),
567 if (!wctx
->use_waterfall
)
570 wctx
->phi_bb
[1] = LLVMGetInsertBlock(ctx
->ac
.builder
);
572 ac_build_endif(&ctx
->ac
, 6001);
575 phi_src
[0] = LLVMGetUndef(LLVMTypeOf(value
));
578 ret
= ac_build_phi(&ctx
->ac
, LLVMTypeOf(value
), 2, phi_src
, wctx
->phi_bb
);
582 * By using the optimization barrier on the exit decision, we decouple
583 * the operations from the break, and hence avoid LLVM hoisting the
584 * opteration into the break block.
586 LLVMValueRef cc
= ac_build_phi(&ctx
->ac
, ctx
->ac
.i32
, 2, cc_phi_src
, wctx
->phi_bb
);
587 ac_build_optimization_barrier(&ctx
->ac
, &cc
);
589 LLVMValueRef active
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntNE
, cc
, ctx
->ac
.i32_0
, "uniform_active2");
590 ac_build_ifcc(&ctx
->ac
, active
, 6002);
591 ac_build_break(&ctx
->ac
);
592 ac_build_endif(&ctx
->ac
, 6002);
594 ac_build_endloop(&ctx
->ac
, 6000);
598 static void visit_alu(struct ac_nir_context
*ctx
, const nir_alu_instr
*instr
)
600 LLVMValueRef src
[4], result
= NULL
;
601 unsigned num_components
= instr
->dest
.dest
.ssa
.num_components
;
602 unsigned src_components
;
603 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.dest
.ssa
);
604 bool saved_inexact
= false;
607 saved_inexact
= ac_disable_inexact_math(ctx
->ac
.builder
);
609 assert(nir_op_infos
[instr
->op
].num_inputs
<= ARRAY_SIZE(src
));
616 case nir_op_pack_half_2x16
:
617 case nir_op_pack_snorm_2x16
:
618 case nir_op_pack_unorm_2x16
:
621 case nir_op_unpack_half_2x16
:
624 case nir_op_cube_face_coord
:
625 case nir_op_cube_face_index
:
629 src_components
= num_components
;
632 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
633 src
[i
] = get_alu_src(ctx
, instr
->src
[i
], src_components
);
640 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
641 result
= LLVMBuildFNeg(ctx
->ac
.builder
, src
[0], "");
642 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO
) {
643 /* fneg will be optimized by backend compiler with sign
644 * bit removed via XOR. This is probably a LLVM bug.
646 result
= ac_build_canonicalize(&ctx
->ac
, result
,
647 instr
->dest
.dest
.ssa
.bit_size
);
651 result
= LLVMBuildNeg(ctx
->ac
.builder
, src
[0], "");
654 result
= LLVMBuildNot(ctx
->ac
.builder
, src
[0], "");
657 result
= LLVMBuildAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
660 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
661 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
662 result
= LLVMBuildFAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
665 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
666 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
667 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], src
[1], "");
670 result
= LLVMBuildSub(ctx
->ac
.builder
, src
[0], src
[1], "");
673 result
= LLVMBuildMul(ctx
->ac
.builder
, src
[0], src
[1], "");
676 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
679 result
= LLVMBuildURem(ctx
->ac
.builder
, src
[0], src
[1], "");
682 /* lower_fmod only lower 16-bit and 32-bit fmod */
683 assert(instr
->dest
.dest
.ssa
.bit_size
== 64);
684 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
685 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
686 result
= ac_build_fdiv(&ctx
->ac
, src
[0], src
[1]);
687 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
688 ac_to_float_type(&ctx
->ac
, def_type
), result
);
689 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[1] , result
, "");
690 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], result
, "");
693 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
696 result
= LLVMBuildSDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
699 result
= LLVMBuildUDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
702 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
703 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
704 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[0], src
[1], "");
707 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.amdgcn.rcp",
708 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
711 result
= LLVMBuildAnd(ctx
->ac
.builder
, src
[0], src
[1], "");
714 result
= LLVMBuildOr(ctx
->ac
.builder
, src
[0], src
[1], "");
717 result
= LLVMBuildXor(ctx
->ac
.builder
, src
[0], src
[1], "");
720 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
721 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
722 LLVMTypeOf(src
[0]), "");
723 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
724 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
725 LLVMTypeOf(src
[0]), "");
726 result
= LLVMBuildShl(ctx
->ac
.builder
, src
[0], src
[1], "");
729 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
730 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
731 LLVMTypeOf(src
[0]), "");
732 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
733 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
734 LLVMTypeOf(src
[0]), "");
735 result
= LLVMBuildAShr(ctx
->ac
.builder
, src
[0], src
[1], "");
738 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
739 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
740 LLVMTypeOf(src
[0]), "");
741 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
742 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
743 LLVMTypeOf(src
[0]), "");
744 result
= LLVMBuildLShr(ctx
->ac
.builder
, src
[0], src
[1], "");
747 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
750 result
= emit_int_cmp(&ctx
->ac
, LLVMIntNE
, src
[0], src
[1]);
753 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, src
[0], src
[1]);
756 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSGE
, src
[0], src
[1]);
759 result
= emit_int_cmp(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
762 result
= emit_int_cmp(&ctx
->ac
, LLVMIntUGE
, src
[0], src
[1]);
765 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOEQ
, src
[0], src
[1]);
768 result
= emit_float_cmp(&ctx
->ac
, LLVMRealUNE
, src
[0], src
[1]);
771 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOLT
, src
[0], src
[1]);
774 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOGE
, src
[0], src
[1]);
777 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.fabs",
778 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
779 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO
) {
780 /* fabs will be optimized by backend compiler with sign
781 * bit removed via AND.
783 result
= ac_build_canonicalize(&ctx
->ac
, result
,
784 instr
->dest
.dest
.ssa
.bit_size
);
788 result
= emit_iabs(&ctx
->ac
, src
[0]);
791 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
794 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
797 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
800 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
803 result
= ac_build_isign(&ctx
->ac
, src
[0],
804 instr
->dest
.dest
.ssa
.bit_size
);
807 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
808 result
= ac_build_fsign(&ctx
->ac
, src
[0],
809 instr
->dest
.dest
.ssa
.bit_size
);
812 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
813 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
816 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.trunc",
817 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
820 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.ceil",
821 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
823 case nir_op_fround_even
:
824 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.rint",
825 ac_to_float_type(&ctx
->ac
, def_type
),src
[0]);
828 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
829 result
= ac_build_fract(&ctx
->ac
, src
[0],
830 instr
->dest
.dest
.ssa
.bit_size
);
833 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sin",
834 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
837 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.cos",
838 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
841 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
842 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
845 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.exp2",
846 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
849 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.log2",
850 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
853 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.amdgcn.rsq",
854 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
856 case nir_op_frexp_exp
:
857 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
858 result
= ac_build_frexp_exp(&ctx
->ac
, src
[0],
859 ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])));
860 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) == 16)
861 result
= LLVMBuildSExt(ctx
->ac
.builder
, result
,
864 case nir_op_frexp_sig
:
865 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
866 result
= ac_build_frexp_mant(&ctx
->ac
, src
[0],
867 instr
->dest
.dest
.ssa
.bit_size
);
870 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.pow",
871 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
874 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
875 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
876 if (ctx
->ac
.chip_class
< GFX9
&&
877 instr
->dest
.dest
.ssa
.bit_size
== 32) {
878 /* Only pre-GFX9 chips do not flush denorms. */
879 result
= ac_build_canonicalize(&ctx
->ac
, result
,
880 instr
->dest
.dest
.ssa
.bit_size
);
884 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
885 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
886 if (ctx
->ac
.chip_class
< GFX9
&&
887 instr
->dest
.dest
.ssa
.bit_size
== 32) {
888 /* Only pre-GFX9 chips do not flush denorms. */
889 result
= ac_build_canonicalize(&ctx
->ac
, result
,
890 instr
->dest
.dest
.ssa
.bit_size
);
894 /* FMA is better on GFX10, because it has FMA units instead of MUL-ADD units. */
895 result
= emit_intrin_3f_param(&ctx
->ac
, ctx
->ac
.chip_class
>= GFX10
? "llvm.fma" : "llvm.fmuladd",
896 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1], src
[2]);
899 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
900 if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 32)
901 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f32", ctx
->ac
.f32
, src
, 2, AC_FUNC_ATTR_READNONE
);
902 else if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 16)
903 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f16", ctx
->ac
.f16
, src
, 2, AC_FUNC_ATTR_READNONE
);
905 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f64", ctx
->ac
.f64
, src
, 2, AC_FUNC_ATTR_READNONE
);
908 result
= emit_bfm(&ctx
->ac
, src
[0], src
[1]);
910 case nir_op_bitfield_select
:
911 result
= emit_bitfield_select(&ctx
->ac
, src
[0], src
[1], src
[2]);
914 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], false);
917 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], true);
919 case nir_op_bitfield_reverse
:
920 result
= ac_build_bitfield_reverse(&ctx
->ac
, src
[0]);
922 case nir_op_bit_count
:
923 result
= ac_build_bit_count(&ctx
->ac
, src
[0]);
928 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
929 src
[i
] = ac_to_integer(&ctx
->ac
, src
[i
]);
930 result
= ac_build_gather_values(&ctx
->ac
, src
, num_components
);
936 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
937 result
= LLVMBuildFPToSI(ctx
->ac
.builder
, src
[0], def_type
, "");
943 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
944 result
= LLVMBuildFPToUI(ctx
->ac
.builder
, src
[0], def_type
, "");
949 result
= LLVMBuildSIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
954 result
= LLVMBuildUIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
956 case nir_op_f2f16_rtz
:
959 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
961 /* For OpenGL, we want fast packing with v_cvt_pkrtz_f16, but if we use it,
962 * all f32->f16 conversions have to round towards zero, because both scalar
963 * and vec2 down-conversions have to round equally.
965 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DEFAULT_OPENGL
||
966 instr
->op
== nir_op_f2f16_rtz
) {
967 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
969 if (LLVMTypeOf(src
[0]) == ctx
->ac
.f64
)
970 src
[0] = LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ctx
->ac
.f32
, "");
972 /* Fast path conversion. This only works if NIR is vectorized
975 if (LLVMTypeOf(src
[0]) == ctx
->ac
.v2f32
) {
976 LLVMValueRef args
[] = {
977 ac_llvm_extract_elem(&ctx
->ac
, src
[0], 0),
978 ac_llvm_extract_elem(&ctx
->ac
, src
[0], 1),
980 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, args
);
984 assert(ac_get_llvm_num_components(src
[0]) == 1);
985 LLVMValueRef param
[2] = { src
[0], LLVMGetUndef(ctx
->ac
.f32
) };
986 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, param
);
987 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
989 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
990 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
992 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
995 case nir_op_f2f16_rtne
:
998 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
999 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
1000 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
1002 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
1009 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
1010 result
= LLVMBuildZExt(ctx
->ac
.builder
, src
[0], def_type
, "");
1012 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
1019 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
1020 result
= LLVMBuildSExt(ctx
->ac
.builder
, src
[0], def_type
, "");
1022 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
1024 case nir_op_b32csel
:
1025 result
= emit_bcsel(&ctx
->ac
, src
[0], src
[1], src
[2]);
1027 case nir_op_find_lsb
:
1028 result
= ac_find_lsb(&ctx
->ac
, ctx
->ac
.i32
, src
[0]);
1030 case nir_op_ufind_msb
:
1031 result
= ac_build_umsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
1033 case nir_op_ifind_msb
:
1034 result
= ac_build_imsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
1036 case nir_op_uadd_carry
:
1037 result
= emit_uint_carry(&ctx
->ac
, "llvm.uadd.with.overflow.i32", src
[0], src
[1]);
1039 case nir_op_usub_borrow
:
1040 result
= emit_uint_carry(&ctx
->ac
, "llvm.usub.with.overflow.i32", src
[0], src
[1]);
1045 result
= emit_b2f(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
1048 result
= emit_f2b(&ctx
->ac
, src
[0]);
1054 result
= emit_b2i(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
1057 result
= emit_i2b(&ctx
->ac
, src
[0]);
1059 case nir_op_fquantize2f16
:
1060 result
= emit_f2f16(&ctx
->ac
, src
[0]);
1062 case nir_op_umul_high
:
1063 result
= emit_umul_high(&ctx
->ac
, src
[0], src
[1]);
1065 case nir_op_imul_high
:
1066 result
= emit_imul_high(&ctx
->ac
, src
[0], src
[1]);
1068 case nir_op_pack_half_2x16
:
1069 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pkrtz_f16
);
1071 case nir_op_pack_snorm_2x16
:
1072 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_i16
);
1074 case nir_op_pack_unorm_2x16
:
1075 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_u16
);
1077 case nir_op_unpack_half_2x16
:
1078 result
= emit_unpack_half_2x16(&ctx
->ac
, src
[0]);
1082 case nir_op_fddx_fine
:
1083 case nir_op_fddy_fine
:
1084 case nir_op_fddx_coarse
:
1085 case nir_op_fddy_coarse
:
1086 result
= emit_ddxy(ctx
, instr
->op
, src
[0]);
1089 case nir_op_unpack_64_2x32_split_x
: {
1090 assert(ac_get_llvm_num_components(src
[0]) == 1);
1091 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1094 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1099 case nir_op_unpack_64_2x32_split_y
: {
1100 assert(ac_get_llvm_num_components(src
[0]) == 1);
1101 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1104 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1109 case nir_op_pack_64_2x32_split
: {
1110 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
1111 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i64
, "");
1115 case nir_op_pack_32_2x16_split
: {
1116 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
1117 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
1121 case nir_op_unpack_32_2x16_split_x
: {
1122 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1125 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1130 case nir_op_unpack_32_2x16_split_y
: {
1131 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1134 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1139 case nir_op_cube_face_coord
: {
1140 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1141 LLVMValueRef results
[2];
1143 for (unsigned chan
= 0; chan
< 3; chan
++)
1144 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1145 results
[0] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubesc",
1146 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1147 results
[1] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubetc",
1148 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1149 LLVMValueRef ma
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubema",
1150 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1151 results
[0] = ac_build_fdiv(&ctx
->ac
, results
[0], ma
);
1152 results
[1] = ac_build_fdiv(&ctx
->ac
, results
[1], ma
);
1153 LLVMValueRef offset
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
1154 results
[0] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[0], offset
, "");
1155 results
[1] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[1], offset
, "");
1156 result
= ac_build_gather_values(&ctx
->ac
, results
, 2);
1160 case nir_op_cube_face_index
: {
1161 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1163 for (unsigned chan
= 0; chan
< 3; chan
++)
1164 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1165 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubeid",
1166 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1171 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1172 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1173 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
1174 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1177 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1178 result
= ac_build_umin(&ctx
->ac
, result
, src
[2]);
1181 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1182 result
= ac_build_imin(&ctx
->ac
, result
, src
[2]);
1185 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1186 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
1187 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
1188 ac_to_float_type(&ctx
->ac
, def_type
), result
, src
[2]);
1191 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1192 result
= ac_build_umax(&ctx
->ac
, result
, src
[2]);
1195 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1196 result
= ac_build_imax(&ctx
->ac
, result
, src
[2]);
1198 case nir_op_fmed3
: {
1199 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1200 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
1201 src
[2] = ac_to_float(&ctx
->ac
, src
[2]);
1202 result
= ac_build_fmed3(&ctx
->ac
, src
[0], src
[1], src
[2],
1203 instr
->dest
.dest
.ssa
.bit_size
);
1206 case nir_op_imed3
: {
1207 LLVMValueRef tmp1
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
1208 LLVMValueRef tmp2
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
1209 tmp2
= ac_build_imin(&ctx
->ac
, tmp2
, src
[2]);
1210 result
= ac_build_imax(&ctx
->ac
, tmp1
, tmp2
);
1213 case nir_op_umed3
: {
1214 LLVMValueRef tmp1
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
1215 LLVMValueRef tmp2
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
1216 tmp2
= ac_build_umin(&ctx
->ac
, tmp2
, src
[2]);
1217 result
= ac_build_umax(&ctx
->ac
, tmp1
, tmp2
);
1222 fprintf(stderr
, "Unknown NIR alu instr: ");
1223 nir_print_instr(&instr
->instr
, stderr
);
1224 fprintf(stderr
, "\n");
1229 assert(instr
->dest
.dest
.is_ssa
);
1230 result
= ac_to_integer_or_pointer(&ctx
->ac
, result
);
1231 ctx
->ssa_defs
[instr
->dest
.dest
.ssa
.index
] = result
;
1235 ac_restore_inexact_math(ctx
->ac
.builder
, saved_inexact
);
1238 static void visit_load_const(struct ac_nir_context
*ctx
,
1239 const nir_load_const_instr
*instr
)
1241 LLVMValueRef values
[4], value
= NULL
;
1242 LLVMTypeRef element_type
=
1243 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
1245 for (unsigned i
= 0; i
< instr
->def
.num_components
; ++i
) {
1246 switch (instr
->def
.bit_size
) {
1248 values
[i
] = LLVMConstInt(element_type
,
1249 instr
->value
[i
].u8
, false);
1252 values
[i
] = LLVMConstInt(element_type
,
1253 instr
->value
[i
].u16
, false);
1256 values
[i
] = LLVMConstInt(element_type
,
1257 instr
->value
[i
].u32
, false);
1260 values
[i
] = LLVMConstInt(element_type
,
1261 instr
->value
[i
].u64
, false);
1265 "unsupported nir load_const bit_size: %d\n",
1266 instr
->def
.bit_size
);
1270 if (instr
->def
.num_components
> 1) {
1271 value
= LLVMConstVector(values
, instr
->def
.num_components
);
1275 ctx
->ssa_defs
[instr
->def
.index
] = value
;
1279 get_buffer_size(struct ac_nir_context
*ctx
, LLVMValueRef descriptor
, bool in_elements
)
1282 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1283 LLVMConstInt(ctx
->ac
.i32
, 2, false), "");
1286 if (ctx
->ac
.chip_class
== GFX8
&& in_elements
) {
1287 /* On GFX8, the descriptor contains the size in bytes,
1288 * but TXQ must return the size in elements.
1289 * The stride is always non-zero for resources using TXQ.
1291 LLVMValueRef stride
=
1292 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1294 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
,
1295 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
1296 stride
= LLVMBuildAnd(ctx
->ac
.builder
, stride
,
1297 LLVMConstInt(ctx
->ac
.i32
, 0x3fff, false), "");
1299 size
= LLVMBuildUDiv(ctx
->ac
.builder
, size
, stride
, "");
1304 /* Gather4 should follow the same rules as bilinear filtering, but the hardware
1305 * incorrectly forces nearest filtering if the texture format is integer.
1306 * The only effect it has on Gather4, which always returns 4 texels for
1307 * bilinear filtering, is that the final coordinates are off by 0.5 of
1310 * The workaround is to subtract 0.5 from the unnormalized coordinates,
1311 * or (0.5 / size) from the normalized coordinates.
1313 * However, cube textures with 8_8_8_8 data formats require a different
1314 * workaround of overriding the num format to USCALED/SSCALED. This would lose
1315 * precision in 32-bit data formats, so it needs to be applied dynamically at
1316 * runtime. In this case, return an i1 value that indicates whether the
1317 * descriptor was overridden (and hence a fixup of the sampler result is needed).
1319 static LLVMValueRef
lower_gather4_integer(struct ac_llvm_context
*ctx
,
1321 struct ac_image_args
*args
,
1322 const nir_tex_instr
*instr
)
1324 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1325 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1326 LLVMValueRef wa_8888
= NULL
;
1327 LLVMValueRef half_texel
[2];
1328 LLVMValueRef result
;
1330 assert(stype
== GLSL_TYPE_INT
|| stype
== GLSL_TYPE_UINT
);
1332 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1333 LLVMValueRef formats
;
1334 LLVMValueRef data_format
;
1335 LLVMValueRef wa_formats
;
1337 formats
= LLVMBuildExtractElement(ctx
->builder
, args
->resource
, ctx
->i32_1
, "");
1339 data_format
= LLVMBuildLShr(ctx
->builder
, formats
,
1340 LLVMConstInt(ctx
->i32
, 20, false), "");
1341 data_format
= LLVMBuildAnd(ctx
->builder
, data_format
,
1342 LLVMConstInt(ctx
->i32
, (1u << 6) - 1, false), "");
1343 wa_8888
= LLVMBuildICmp(
1344 ctx
->builder
, LLVMIntEQ
, data_format
,
1345 LLVMConstInt(ctx
->i32
, V_008F14_IMG_DATA_FORMAT_8_8_8_8
, false),
1348 uint32_t wa_num_format
=
1349 stype
== GLSL_TYPE_UINT
?
1350 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_USCALED
) :
1351 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_SSCALED
);
1352 wa_formats
= LLVMBuildAnd(ctx
->builder
, formats
,
1353 LLVMConstInt(ctx
->i32
, C_008F14_NUM_FORMAT
, false),
1355 wa_formats
= LLVMBuildOr(ctx
->builder
, wa_formats
,
1356 LLVMConstInt(ctx
->i32
, wa_num_format
, false), "");
1358 formats
= LLVMBuildSelect(ctx
->builder
, wa_8888
, wa_formats
, formats
, "");
1359 args
->resource
= LLVMBuildInsertElement(
1360 ctx
->builder
, args
->resource
, formats
, ctx
->i32_1
, "");
1363 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
) {
1365 half_texel
[0] = half_texel
[1] = LLVMConstReal(ctx
->f32
, -0.5);
1367 struct ac_image_args resinfo
= {};
1368 LLVMBasicBlockRef bbs
[2];
1370 LLVMValueRef unnorm
= NULL
;
1371 LLVMValueRef default_offset
= ctx
->f32_0
;
1372 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
&&
1374 /* In vulkan, whether the sampler uses unnormalized
1375 * coordinates or not is a dynamic property of the
1376 * sampler. Hence, to figure out whether or not we
1377 * need to divide by the texture size, we need to test
1378 * the sampler at runtime. This tests the bit set by
1379 * radv_init_sampler().
1381 LLVMValueRef sampler0
=
1382 LLVMBuildExtractElement(ctx
->builder
, args
->sampler
, ctx
->i32_0
, "");
1383 sampler0
= LLVMBuildLShr(ctx
->builder
, sampler0
,
1384 LLVMConstInt(ctx
->i32
, 15, false), "");
1385 sampler0
= LLVMBuildAnd(ctx
->builder
, sampler0
, ctx
->i32_1
, "");
1386 unnorm
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, sampler0
, ctx
->i32_1
, "");
1387 default_offset
= LLVMConstReal(ctx
->f32
, -0.5);
1390 bbs
[0] = LLVMGetInsertBlock(ctx
->builder
);
1391 if (wa_8888
|| unnorm
) {
1392 assert(!(wa_8888
&& unnorm
));
1393 LLVMValueRef not_needed
= wa_8888
? wa_8888
: unnorm
;
1394 /* Skip the texture size query entirely if we don't need it. */
1395 ac_build_ifcc(ctx
, LLVMBuildNot(ctx
->builder
, not_needed
, ""), 2000);
1396 bbs
[1] = LLVMGetInsertBlock(ctx
->builder
);
1399 /* Query the texture size. */
1400 resinfo
.dim
= ac_get_sampler_dim(ctx
->chip_class
, instr
->sampler_dim
, instr
->is_array
);
1401 resinfo
.opcode
= ac_image_get_resinfo
;
1402 resinfo
.dmask
= 0xf;
1403 resinfo
.lod
= ctx
->i32_0
;
1404 resinfo
.resource
= args
->resource
;
1405 resinfo
.attributes
= AC_FUNC_ATTR_READNONE
;
1406 LLVMValueRef size
= ac_build_image_opcode(ctx
, &resinfo
);
1408 /* Compute -0.5 / size. */
1409 for (unsigned c
= 0; c
< 2; c
++) {
1411 LLVMBuildExtractElement(ctx
->builder
, size
,
1412 LLVMConstInt(ctx
->i32
, c
, 0), "");
1413 half_texel
[c
] = LLVMBuildUIToFP(ctx
->builder
, half_texel
[c
], ctx
->f32
, "");
1414 half_texel
[c
] = ac_build_fdiv(ctx
, ctx
->f32_1
, half_texel
[c
]);
1415 half_texel
[c
] = LLVMBuildFMul(ctx
->builder
, half_texel
[c
],
1416 LLVMConstReal(ctx
->f32
, -0.5), "");
1419 if (wa_8888
|| unnorm
) {
1420 ac_build_endif(ctx
, 2000);
1422 for (unsigned c
= 0; c
< 2; c
++) {
1423 LLVMValueRef values
[2] = { default_offset
, half_texel
[c
] };
1424 half_texel
[c
] = ac_build_phi(ctx
, ctx
->f32
, 2,
1430 for (unsigned c
= 0; c
< 2; c
++) {
1432 tmp
= LLVMBuildBitCast(ctx
->builder
, args
->coords
[c
], ctx
->f32
, "");
1433 args
->coords
[c
] = LLVMBuildFAdd(ctx
->builder
, tmp
, half_texel
[c
], "");
1436 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1437 result
= ac_build_image_opcode(ctx
, args
);
1439 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1440 LLVMValueRef tmp
, tmp2
;
1442 /* if the cube workaround is in place, f2i the result. */
1443 for (unsigned c
= 0; c
< 4; c
++) {
1444 tmp
= LLVMBuildExtractElement(ctx
->builder
, result
, LLVMConstInt(ctx
->i32
, c
, false), "");
1445 if (stype
== GLSL_TYPE_UINT
)
1446 tmp2
= LLVMBuildFPToUI(ctx
->builder
, tmp
, ctx
->i32
, "");
1448 tmp2
= LLVMBuildFPToSI(ctx
->builder
, tmp
, ctx
->i32
, "");
1449 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->i32
, "");
1450 tmp2
= LLVMBuildBitCast(ctx
->builder
, tmp2
, ctx
->i32
, "");
1451 tmp
= LLVMBuildSelect(ctx
->builder
, wa_8888
, tmp2
, tmp
, "");
1452 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f32
, "");
1453 result
= LLVMBuildInsertElement(ctx
->builder
, result
, tmp
, LLVMConstInt(ctx
->i32
, c
, false), "");
1459 static nir_deref_instr
*get_tex_texture_deref(const nir_tex_instr
*instr
)
1461 nir_deref_instr
*texture_deref_instr
= NULL
;
1463 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
1464 switch (instr
->src
[i
].src_type
) {
1465 case nir_tex_src_texture_deref
:
1466 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
1472 return texture_deref_instr
;
1475 static LLVMValueRef
build_tex_intrinsic(struct ac_nir_context
*ctx
,
1476 const nir_tex_instr
*instr
,
1477 struct ac_image_args
*args
)
1479 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
1480 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
1482 assert(instr
->dest
.is_ssa
);
1483 return ac_build_buffer_load_format(&ctx
->ac
,
1487 util_last_bit(mask
),
1489 instr
->dest
.ssa
.bit_size
== 16);
1492 args
->opcode
= ac_image_sample
;
1494 switch (instr
->op
) {
1496 case nir_texop_txf_ms
:
1497 case nir_texop_samples_identical
:
1498 args
->opcode
= args
->level_zero
||
1499 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
?
1500 ac_image_load
: ac_image_load_mip
;
1501 args
->level_zero
= false;
1504 case nir_texop_query_levels
:
1505 args
->opcode
= ac_image_get_resinfo
;
1507 args
->lod
= ctx
->ac
.i32_0
;
1508 args
->level_zero
= false;
1511 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1513 args
->level_zero
= true;
1517 args
->opcode
= ac_image_gather4
;
1518 if (!args
->lod
&& !args
->bias
)
1519 args
->level_zero
= true;
1522 args
->opcode
= ac_image_get_lod
;
1524 case nir_texop_fragment_fetch
:
1525 case nir_texop_fragment_mask_fetch
:
1526 args
->opcode
= ac_image_load
;
1527 args
->level_zero
= false;
1533 if (instr
->op
== nir_texop_tg4
&& ctx
->ac
.chip_class
<= GFX8
) {
1534 nir_deref_instr
*texture_deref_instr
= get_tex_texture_deref(instr
);
1535 nir_variable
*var
= nir_deref_instr_get_variable(texture_deref_instr
);
1536 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1537 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1538 if (stype
== GLSL_TYPE_UINT
|| stype
== GLSL_TYPE_INT
) {
1539 return lower_gather4_integer(&ctx
->ac
, var
, args
, instr
);
1543 /* Fixup for GFX9 which allocates 1D textures as 2D. */
1544 if (instr
->op
== nir_texop_lod
&& ctx
->ac
.chip_class
== GFX9
) {
1545 if ((args
->dim
== ac_image_2darray
||
1546 args
->dim
== ac_image_2d
) && !args
->coords
[1]) {
1547 args
->coords
[1] = ctx
->ac
.i32_0
;
1551 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1552 bool cs_derivs
= ctx
->stage
== MESA_SHADER_COMPUTE
&&
1553 ctx
->info
->cs
.derivative_group
!= DERIVATIVE_GROUP_NONE
;
1554 if (ctx
->stage
== MESA_SHADER_FRAGMENT
|| cs_derivs
) {
1555 /* Prevent texture instructions with implicit derivatives from being
1556 * sinked into branches. */
1557 switch (instr
->op
) {
1561 args
->attributes
|= AC_FUNC_ATTR_CONVERGENT
;
1568 return ac_build_image_opcode(&ctx
->ac
, args
);
1571 static LLVMValueRef
visit_vulkan_resource_reindex(struct ac_nir_context
*ctx
,
1572 nir_intrinsic_instr
*instr
)
1574 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
1575 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
1577 LLVMValueRef result
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
1578 LLVMSetMetadata(result
, ctx
->ac
.uniform_md_kind
, ctx
->ac
.empty_md
);
1582 static LLVMValueRef
visit_load_push_constant(struct ac_nir_context
*ctx
,
1583 nir_intrinsic_instr
*instr
)
1585 LLVMValueRef ptr
, addr
;
1586 LLVMValueRef src0
= get_src(ctx
, instr
->src
[0]);
1587 unsigned index
= nir_intrinsic_base(instr
);
1589 addr
= LLVMConstInt(ctx
->ac
.i32
, index
, 0);
1590 addr
= LLVMBuildAdd(ctx
->ac
.builder
, addr
, src0
, "");
1592 /* Load constant values from user SGPRS when possible, otherwise
1593 * fallback to the default path that loads directly from memory.
1595 if (LLVMIsConstant(src0
) &&
1596 instr
->dest
.ssa
.bit_size
== 32) {
1597 unsigned count
= instr
->dest
.ssa
.num_components
;
1598 unsigned offset
= index
;
1600 offset
+= LLVMConstIntGetZExtValue(src0
);
1603 offset
-= ctx
->args
->base_inline_push_consts
;
1605 unsigned num_inline_push_consts
= ctx
->args
->num_inline_push_consts
;
1606 if (offset
+ count
<= num_inline_push_consts
) {
1607 LLVMValueRef push_constants
[num_inline_push_consts
];
1608 for (unsigned i
= 0; i
< num_inline_push_consts
; i
++)
1609 push_constants
[i
] = ac_get_arg(&ctx
->ac
,
1610 ctx
->args
->inline_push_consts
[i
]);
1611 return ac_build_gather_values(&ctx
->ac
,
1612 push_constants
+ offset
,
1617 ptr
= LLVMBuildGEP(ctx
->ac
.builder
,
1618 ac_get_arg(&ctx
->ac
, ctx
->args
->push_constants
), &addr
, 1, "");
1620 if (instr
->dest
.ssa
.bit_size
== 8) {
1621 unsigned load_dwords
= instr
->dest
.ssa
.num_components
> 1 ? 2 : 1;
1622 LLVMTypeRef vec_type
= LLVMVectorType(ctx
->ac
.i8
, 4 * load_dwords
);
1623 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1624 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1626 LLVMValueRef params
[3];
1627 if (load_dwords
> 1) {
1628 LLVMValueRef res_vec
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, ctx
->ac
.v2i32
, "");
1629 params
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
1630 params
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 0, false), "");
1632 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, ctx
->ac
.i32
, "");
1633 params
[0] = ctx
->ac
.i32_0
;
1637 res
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.alignbyte", ctx
->ac
.i32
, params
, 3, 0);
1639 res
= LLVMBuildTrunc(ctx
->ac
.builder
, res
, LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.num_components
* 8), "");
1640 if (instr
->dest
.ssa
.num_components
> 1)
1641 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(ctx
->ac
.i8
, instr
->dest
.ssa
.num_components
), "");
1643 } else if (instr
->dest
.ssa
.bit_size
== 16) {
1644 unsigned load_dwords
= instr
->dest
.ssa
.num_components
/ 2 + 1;
1645 LLVMTypeRef vec_type
= LLVMVectorType(ctx
->ac
.i16
, 2 * load_dwords
);
1646 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1647 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1648 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, vec_type
, "");
1649 LLVMValueRef cond
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, ctx
->ac
.i32_1
, "");
1650 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->ac
.i1
, "");
1651 LLVMValueRef mask
[] = { LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
1652 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
1653 LLVMConstInt(ctx
->ac
.i32
, 4, false)};
1654 LLVMValueRef swizzle_aligned
= LLVMConstVector(&mask
[0], instr
->dest
.ssa
.num_components
);
1655 LLVMValueRef swizzle_unaligned
= LLVMConstVector(&mask
[1], instr
->dest
.ssa
.num_components
);
1656 LLVMValueRef shuffle_aligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_aligned
, "");
1657 LLVMValueRef shuffle_unaligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_unaligned
, "");
1658 res
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, shuffle_unaligned
, shuffle_aligned
, "");
1659 return LLVMBuildBitCast(ctx
->ac
.builder
, res
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1662 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, get_def_type(ctx
, &instr
->dest
.ssa
));
1664 return LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1667 static LLVMValueRef
visit_get_buffer_size(struct ac_nir_context
*ctx
,
1668 const nir_intrinsic_instr
*instr
)
1670 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
1672 return get_buffer_size(ctx
, ctx
->abi
->load_ssbo(ctx
->abi
, index
, false), false);
1675 static uint32_t widen_mask(uint32_t mask
, unsigned multiplier
)
1677 uint32_t new_mask
= 0;
1678 for(unsigned i
= 0; i
< 32 && (1u << i
) <= mask
; ++i
)
1679 if (mask
& (1u << i
))
1680 new_mask
|= ((1u << multiplier
) - 1u) << (i
* multiplier
);
1684 static LLVMValueRef
extract_vector_range(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
1685 unsigned start
, unsigned count
)
1687 LLVMValueRef mask
[] = {
1688 ctx
->i32_0
, ctx
->i32_1
,
1689 LLVMConstInt(ctx
->i32
, 2, false), LLVMConstInt(ctx
->i32
, 3, false) };
1691 unsigned src_elements
= ac_get_llvm_num_components(src
);
1693 if (count
== src_elements
) {
1696 } else if (count
== 1) {
1697 assert(start
< src_elements
);
1698 return LLVMBuildExtractElement(ctx
->builder
, src
, mask
[start
], "");
1700 assert(start
+ count
<= src_elements
);
1702 LLVMValueRef swizzle
= LLVMConstVector(&mask
[start
], count
);
1703 return LLVMBuildShuffleVector(ctx
->builder
, src
, src
, swizzle
, "");
1707 static unsigned get_cache_policy(struct ac_nir_context
*ctx
,
1708 enum gl_access_qualifier access
,
1709 bool may_store_unaligned
,
1710 bool writeonly_memory
)
1712 unsigned cache_policy
= 0;
1714 /* GFX6 has a TC L1 bug causing corruption of 8bit/16bit stores. All
1715 * store opcodes not aligned to a dword are affected. The only way to
1716 * get unaligned stores is through shader images.
1718 if (((may_store_unaligned
&& ctx
->ac
.chip_class
== GFX6
) ||
1719 /* If this is write-only, don't keep data in L1 to prevent
1720 * evicting L1 cache lines that may be needed by other
1724 access
& (ACCESS_COHERENT
| ACCESS_VOLATILE
))) {
1725 cache_policy
|= ac_glc
;
1728 if (access
& ACCESS_STREAM_CACHE_POLICY
)
1729 cache_policy
|= ac_slc
| ac_glc
;
1731 return cache_policy
;
1734 static LLVMValueRef
enter_waterfall_ssbo(struct ac_nir_context
*ctx
,
1735 struct waterfall_context
*wctx
,
1736 const nir_intrinsic_instr
*instr
,
1739 return enter_waterfall(ctx
, wctx
, get_src(ctx
, src
),
1740 nir_intrinsic_access(instr
) & ACCESS_NON_UNIFORM
);
1743 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1744 nir_intrinsic_instr
*instr
)
1746 if (ctx
->ac
.postponed_kill
) {
1747 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
1748 ctx
->ac
.postponed_kill
, "");
1749 ac_build_ifcc(&ctx
->ac
, cond
, 7000);
1752 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1753 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1754 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1755 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1756 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
1757 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, writeonly_memory
);
1759 struct waterfall_context wctx
;
1760 LLVMValueRef rsrc_base
= enter_waterfall_ssbo(ctx
, &wctx
, instr
, instr
->src
[1]);
1762 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
, rsrc_base
, true);
1763 LLVMValueRef base_data
= src_data
;
1764 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1765 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1769 LLVMValueRef data
, offset
;
1770 LLVMTypeRef data_type
;
1772 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1774 /* Due to an LLVM limitation with LLVM < 9, split 3-element
1775 * writes into a 2-element and a 1-element write. */
1777 (elem_size_bytes
!= 4 || !ac_has_vec3_support(ctx
->ac
.chip_class
, false))) {
1778 writemask
|= 1 << (start
+ 2);
1781 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1783 /* we can only store 4 DWords at the same time.
1784 * can only happen for 64 Bit vectors. */
1785 if (num_bytes
> 16) {
1786 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1791 /* check alignment of 16 Bit stores */
1792 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1793 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1798 /* Due to alignment issues, split stores of 8-bit/16-bit
1801 if (ctx
->ac
.chip_class
== GFX6
&& count
> 1 && elem_size_bytes
< 4) {
1802 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1804 num_bytes
= elem_size_bytes
;
1807 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1809 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1810 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1812 if (num_bytes
== 1) {
1813 ac_build_tbuffer_store_byte(&ctx
->ac
, rsrc
, data
,
1814 offset
, ctx
->ac
.i32_0
,
1816 } else if (num_bytes
== 2) {
1817 ac_build_tbuffer_store_short(&ctx
->ac
, rsrc
, data
,
1818 offset
, ctx
->ac
.i32_0
,
1821 int num_channels
= num_bytes
/ 4;
1823 switch (num_bytes
) {
1824 case 16: /* v4f32 */
1825 data_type
= ctx
->ac
.v4f32
;
1827 case 12: /* v3f32 */
1828 data_type
= ctx
->ac
.v3f32
;
1831 data_type
= ctx
->ac
.v2f32
;
1834 data_type
= ctx
->ac
.f32
;
1837 unreachable("Malformed vector store.");
1839 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1841 ac_build_buffer_store_dword(&ctx
->ac
, rsrc
, data
,
1842 num_channels
, offset
,
1848 exit_waterfall(ctx
, &wctx
, NULL
);
1850 if (ctx
->ac
.postponed_kill
)
1851 ac_build_endif(&ctx
->ac
, 7000);
1854 static LLVMValueRef
emit_ssbo_comp_swap_64(struct ac_nir_context
*ctx
,
1855 LLVMValueRef descriptor
,
1856 LLVMValueRef offset
,
1857 LLVMValueRef compare
,
1858 LLVMValueRef exchange
)
1860 LLVMBasicBlockRef start_block
= NULL
, then_block
= NULL
;
1861 if (ctx
->abi
->robust_buffer_access
) {
1862 LLVMValueRef size
= ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 2);
1864 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
, offset
, size
, "");
1865 start_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1867 ac_build_ifcc(&ctx
->ac
, cond
, -1);
1869 then_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1872 LLVMValueRef ptr_parts
[2] = {
1873 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 0),
1874 LLVMBuildAnd(ctx
->ac
.builder
,
1875 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 1),
1876 LLVMConstInt(ctx
->ac
.i32
, 65535, 0), "")
1879 ptr_parts
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i16
, "");
1880 ptr_parts
[1] = LLVMBuildSExt(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i32
, "");
1882 offset
= LLVMBuildZExt(ctx
->ac
.builder
, offset
, ctx
->ac
.i64
, "");
1884 LLVMValueRef ptr
= ac_build_gather_values(&ctx
->ac
, ptr_parts
, 2);
1885 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ctx
->ac
.i64
, "");
1886 ptr
= LLVMBuildAdd(ctx
->ac
.builder
, ptr
, offset
, "");
1887 ptr
= LLVMBuildIntToPtr(ctx
->ac
.builder
, ptr
, LLVMPointerType(ctx
->ac
.i64
, AC_ADDR_SPACE_GLOBAL
), "");
1889 LLVMValueRef result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, compare
, exchange
, "singlethread-one-as");
1890 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
1892 if (ctx
->abi
->robust_buffer_access
) {
1893 ac_build_endif(&ctx
->ac
, -1);
1895 LLVMBasicBlockRef incoming_blocks
[2] = {
1900 LLVMValueRef incoming_values
[2] = {
1901 LLVMConstInt(ctx
->ac
.i64
, 0, 0),
1904 LLVMValueRef ret
= LLVMBuildPhi(ctx
->ac
.builder
, ctx
->ac
.i64
, "");
1905 LLVMAddIncoming(ret
, incoming_values
, incoming_blocks
, 2);
1912 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1913 nir_intrinsic_instr
*instr
)
1915 if (ctx
->ac
.postponed_kill
) {
1916 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
1917 ctx
->ac
.postponed_kill
, "");
1918 ac_build_ifcc(&ctx
->ac
, cond
, 7001);
1921 LLVMTypeRef return_type
= LLVMTypeOf(get_src(ctx
, instr
->src
[2]));
1923 char name
[64], type
[8];
1924 LLVMValueRef params
[6], descriptor
;
1925 LLVMValueRef result
;
1928 struct waterfall_context wctx
;
1929 LLVMValueRef rsrc_base
= enter_waterfall_ssbo(ctx
, &wctx
, instr
, instr
->src
[0]);
1931 switch (instr
->intrinsic
) {
1932 case nir_intrinsic_ssbo_atomic_add
:
1935 case nir_intrinsic_ssbo_atomic_imin
:
1938 case nir_intrinsic_ssbo_atomic_umin
:
1941 case nir_intrinsic_ssbo_atomic_imax
:
1944 case nir_intrinsic_ssbo_atomic_umax
:
1947 case nir_intrinsic_ssbo_atomic_and
:
1950 case nir_intrinsic_ssbo_atomic_or
:
1953 case nir_intrinsic_ssbo_atomic_xor
:
1956 case nir_intrinsic_ssbo_atomic_exchange
:
1959 case nir_intrinsic_ssbo_atomic_comp_swap
:
1966 descriptor
= ctx
->abi
->load_ssbo(ctx
->abi
,
1970 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
&&
1971 return_type
== ctx
->ac
.i64
) {
1972 result
= emit_ssbo_comp_swap_64(ctx
, descriptor
,
1973 get_src(ctx
, instr
->src
[1]),
1974 get_src(ctx
, instr
->src
[2]),
1975 get_src(ctx
, instr
->src
[3]));
1977 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1978 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1980 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1981 params
[arg_count
++] = descriptor
;
1983 if (LLVM_VERSION_MAJOR
>= 9) {
1984 /* XXX: The new raw/struct atomic intrinsics are buggy with
1985 * LLVM 8, see r358579.
1987 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1988 params
[arg_count
++] = ctx
->ac
.i32_0
; /* soffset */
1989 params
[arg_count
++] = ctx
->ac
.i32_0
; /* slc */
1991 ac_build_type_name_for_intr(return_type
, type
, sizeof(type
));
1992 snprintf(name
, sizeof(name
),
1993 "llvm.amdgcn.raw.buffer.atomic.%s.%s", op
, type
);
1995 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1996 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1997 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1999 assert(return_type
== ctx
->ac
.i32
);
2000 snprintf(name
, sizeof(name
),
2001 "llvm.amdgcn.buffer.atomic.%s", op
);
2004 result
= ac_build_intrinsic(&ctx
->ac
, name
, return_type
, params
,
2008 result
= exit_waterfall(ctx
, &wctx
, result
);
2009 if (ctx
->ac
.postponed_kill
)
2010 ac_build_endif(&ctx
->ac
, 7001);
2014 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
2015 nir_intrinsic_instr
*instr
)
2017 struct waterfall_context wctx
;
2018 LLVMValueRef rsrc_base
= enter_waterfall_ssbo(ctx
, &wctx
, instr
, instr
->src
[0]);
2020 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
2021 int num_components
= instr
->num_components
;
2022 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
2023 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, false);
2025 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
2026 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
, rsrc_base
, false);
2027 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
2029 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2030 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
2032 LLVMValueRef results
[4];
2033 for (int i
= 0; i
< num_components
;) {
2034 int num_elems
= num_components
- i
;
2035 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
2037 if (num_elems
* elem_size_bytes
> 16)
2038 num_elems
= 16 / elem_size_bytes
;
2039 int load_bytes
= num_elems
* elem_size_bytes
;
2041 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
2045 if (load_bytes
== 1) {
2046 ret
= ac_build_tbuffer_load_byte(&ctx
->ac
,
2052 } else if (load_bytes
== 2) {
2053 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
2060 int num_channels
= util_next_power_of_two(load_bytes
) / 4;
2061 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2063 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_channels
,
2064 vindex
, offset
, immoffset
, 0,
2065 cache_policy
, can_speculate
, false);
2068 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
2069 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
2070 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
2072 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
2073 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
2075 for (unsigned j
= 0; j
< num_elems
; j
++) {
2076 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
2081 LLVMValueRef ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
2082 return exit_waterfall(ctx
, &wctx
, ret
);
2085 static LLVMValueRef
enter_waterfall_ubo(struct ac_nir_context
*ctx
,
2086 struct waterfall_context
*wctx
,
2087 const nir_intrinsic_instr
*instr
)
2089 return enter_waterfall(ctx
, wctx
, get_src(ctx
, instr
->src
[0]),
2090 nir_intrinsic_access(instr
) & ACCESS_NON_UNIFORM
);
2093 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
2094 nir_intrinsic_instr
*instr
)
2096 struct waterfall_context wctx
;
2097 LLVMValueRef rsrc_base
= enter_waterfall_ubo(ctx
, &wctx
, instr
);
2100 LLVMValueRef rsrc
= rsrc_base
;
2101 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
2102 int num_components
= instr
->num_components
;
2104 if (ctx
->abi
->load_ubo
)
2105 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
2107 if (instr
->dest
.ssa
.bit_size
== 64)
2108 num_components
*= 2;
2110 if (instr
->dest
.ssa
.bit_size
== 16 || instr
->dest
.ssa
.bit_size
== 8) {
2111 unsigned load_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
2112 LLVMValueRef results
[num_components
];
2113 for (unsigned i
= 0; i
< num_components
; ++i
) {
2114 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
,
2117 if (load_bytes
== 1) {
2118 results
[i
] = ac_build_tbuffer_load_byte(&ctx
->ac
,
2125 assert(load_bytes
== 2);
2126 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
2134 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
2136 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
2137 NULL
, 0, 0, true, true);
2139 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
2142 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
2143 get_def_type(ctx
, &instr
->dest
.ssa
), "");
2145 return exit_waterfall(ctx
, &wctx
, ret
);
2149 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
2150 bool vs_in
, unsigned *vertex_index_out
,
2151 LLVMValueRef
*vertex_index_ref
,
2152 unsigned *const_out
, LLVMValueRef
*indir_out
)
2154 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
2155 nir_deref_path path
;
2156 unsigned idx_lvl
= 1;
2158 nir_deref_path_init(&path
, instr
, NULL
);
2160 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
2161 if (vertex_index_ref
) {
2162 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
2163 if (vertex_index_out
)
2164 *vertex_index_out
= 0;
2166 *vertex_index_out
= nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
2171 uint32_t const_offset
= 0;
2172 LLVMValueRef offset
= NULL
;
2174 if (var
->data
.compact
) {
2175 assert(instr
->deref_type
== nir_deref_type_array
);
2176 const_offset
= nir_src_as_uint(instr
->arr
.index
);
2180 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
2181 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
2182 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
2183 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
2185 for (unsigned i
= 0; i
< index
; i
++) {
2186 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
2187 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
2189 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
2190 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
2191 if (nir_src_is_const(path
.path
[idx_lvl
]->arr
.index
)) {
2192 const_offset
+= size
*
2193 nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
2195 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
2196 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
2198 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
2203 unreachable("Uhandled deref type in get_deref_instr_offset");
2207 nir_deref_path_finish(&path
);
2209 if (const_offset
&& offset
)
2210 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
2211 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
2214 *const_out
= const_offset
;
2215 *indir_out
= offset
;
2218 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
2219 nir_intrinsic_instr
*instr
,
2222 LLVMValueRef result
;
2223 LLVMValueRef vertex_index
= NULL
;
2224 LLVMValueRef indir_index
= NULL
;
2225 unsigned const_index
= 0;
2227 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
2229 unsigned location
= var
->data
.location
;
2230 unsigned driver_location
= var
->data
.driver_location
;
2231 const bool is_patch
= var
->data
.patch
||
2232 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
2233 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
;
2234 const bool is_compact
= var
->data
.compact
;
2236 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2237 false, NULL
, is_patch
? NULL
: &vertex_index
,
2238 &const_index
, &indir_index
);
2240 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2242 LLVMTypeRef src_component_type
;
2243 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
2244 src_component_type
= LLVMGetElementType(dest_type
);
2246 src_component_type
= dest_type
;
2248 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
2249 vertex_index
, indir_index
,
2250 const_index
, location
, driver_location
,
2251 var
->data
.location_frac
,
2252 instr
->num_components
,
2253 is_patch
, is_compact
, load_inputs
);
2254 if (instr
->dest
.ssa
.bit_size
== 16) {
2255 result
= ac_to_integer(&ctx
->ac
, result
);
2256 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
2258 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
2262 type_scalar_size_bytes(const struct glsl_type
*type
)
2264 assert(glsl_type_is_vector_or_scalar(type
) ||
2265 glsl_type_is_matrix(type
));
2266 return glsl_type_is_boolean(type
) ? 4 : glsl_get_bit_size(type
) / 8;
2269 static LLVMValueRef
visit_load_var(struct ac_nir_context
*ctx
,
2270 nir_intrinsic_instr
*instr
)
2272 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2273 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2275 LLVMValueRef values
[8];
2277 int ve
= instr
->dest
.ssa
.num_components
;
2279 LLVMValueRef indir_index
;
2281 unsigned const_index
;
2282 unsigned stride
= 4;
2283 int mode
= deref
->mode
;
2286 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
2287 var
->data
.mode
== nir_var_shader_in
;
2288 idx
= var
->data
.driver_location
;
2289 comp
= var
->data
.location_frac
;
2290 mode
= var
->data
.mode
;
2292 get_deref_offset(ctx
, deref
, vs_in
, NULL
, NULL
,
2293 &const_index
, &indir_index
);
2295 if (var
->data
.compact
) {
2297 const_index
+= comp
;
2302 if (instr
->dest
.ssa
.bit_size
== 64 &&
2303 (deref
->mode
== nir_var_shader_in
||
2304 deref
->mode
== nir_var_shader_out
||
2305 deref
->mode
== nir_var_function_temp
))
2309 case nir_var_shader_in
:
2310 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
2311 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
2312 return load_tess_varyings(ctx
, instr
, true);
2315 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
2316 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
2317 LLVMValueRef indir_index
;
2318 unsigned const_index
, vertex_index
;
2319 get_deref_offset(ctx
, deref
, false, &vertex_index
, NULL
,
2320 &const_index
, &indir_index
);
2321 assert(indir_index
== NULL
);
2323 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
2324 var
->data
.driver_location
,
2325 var
->data
.location_frac
,
2326 instr
->num_components
, vertex_index
, const_index
, type
);
2329 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2331 unsigned count
= glsl_count_attribute_slots(
2333 ctx
->stage
== MESA_SHADER_VERTEX
);
2335 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2336 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
2337 stride
, false, true);
2339 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2343 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
2346 case nir_var_function_temp
:
2347 for (unsigned chan
= 0; chan
< ve
; chan
++) {
2349 unsigned count
= glsl_count_attribute_slots(
2352 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2353 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2354 stride
, true, true);
2356 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2360 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
2364 case nir_var_shader_out
:
2365 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2366 return load_tess_varyings(ctx
, instr
, false);
2369 if (ctx
->stage
== MESA_SHADER_FRAGMENT
&&
2370 var
->data
.fb_fetch_output
&&
2371 ctx
->abi
->emit_fbfetch
)
2372 return ctx
->abi
->emit_fbfetch(ctx
->abi
);
2374 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2376 unsigned count
= glsl_count_attribute_slots(
2379 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2380 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2381 stride
, true, true);
2383 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2387 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
2388 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
2393 case nir_var_mem_global
: {
2394 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2395 LLVMTypeRef result_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2396 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2397 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2398 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2399 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, result_type
) / 8;
2400 bool split_loads
= ctx
->ac
.chip_class
== GFX6
&& elem_size_bytes
< 4;
2402 if (stride
!= natural_stride
|| split_loads
) {
2403 if (LLVMGetTypeKind(result_type
) == LLVMVectorTypeKind
)
2404 result_type
= LLVMGetElementType(result_type
);
2406 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2407 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2408 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2410 for (unsigned i
= 0; i
< instr
->dest
.ssa
.num_components
; ++i
) {
2411 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, i
* stride
/ natural_stride
, 0);
2412 values
[i
] = LLVMBuildLoad(ctx
->ac
.builder
,
2413 ac_build_gep_ptr(&ctx
->ac
, address
, offset
), "");
2415 return ac_build_gather_values(&ctx
->ac
, values
, instr
->dest
.ssa
.num_components
);
2417 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2418 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2419 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2420 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2425 unreachable("unhandle variable mode");
2427 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
2428 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2432 visit_store_var(struct ac_nir_context
*ctx
,
2433 nir_intrinsic_instr
*instr
)
2435 if (ctx
->ac
.postponed_kill
) {
2436 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2437 ctx
->ac
.postponed_kill
, "");
2438 ac_build_ifcc(&ctx
->ac
, cond
, 7002);
2441 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2442 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2444 LLVMValueRef temp_ptr
, value
;
2447 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
2448 int writemask
= instr
->const_index
[0];
2449 LLVMValueRef indir_index
;
2450 unsigned const_index
;
2453 get_deref_offset(ctx
, deref
, false,
2454 NULL
, NULL
, &const_index
, &indir_index
);
2455 idx
= var
->data
.driver_location
;
2456 comp
= var
->data
.location_frac
;
2458 if (var
->data
.compact
) {
2459 const_index
+= comp
;
2464 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64 &&
2465 (deref
->mode
== nir_var_shader_out
||
2466 deref
->mode
== nir_var_function_temp
)) {
2468 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2469 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2472 writemask
= widen_mask(writemask
, 2);
2475 writemask
= writemask
<< comp
;
2477 switch (deref
->mode
) {
2478 case nir_var_shader_out
:
2480 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2481 LLVMValueRef vertex_index
= NULL
;
2482 LLVMValueRef indir_index
= NULL
;
2483 unsigned const_index
= 0;
2484 const bool is_patch
= var
->data
.patch
||
2485 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
2486 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
;
2488 get_deref_offset(ctx
, deref
, false, NULL
,
2489 is_patch
? NULL
: &vertex_index
,
2490 &const_index
, &indir_index
);
2492 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2493 vertex_index
, indir_index
,
2494 const_index
, src
, writemask
);
2498 for (unsigned chan
= 0; chan
< 8; chan
++) {
2500 if (!(writemask
& (1 << chan
)))
2503 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2505 if (var
->data
.compact
)
2508 unsigned count
= glsl_count_attribute_slots(
2511 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2512 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2513 stride
, true, true);
2515 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2516 value
, indir_index
, "");
2517 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2518 count
, stride
, tmp_vec
);
2521 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2523 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2527 case nir_var_function_temp
:
2528 for (unsigned chan
= 0; chan
< 8; chan
++) {
2529 if (!(writemask
& (1 << chan
)))
2532 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2534 unsigned count
= glsl_count_attribute_slots(
2537 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2538 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2541 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2542 value
, indir_index
, "");
2543 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2546 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2548 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2553 case nir_var_mem_global
: {
2554 int writemask
= instr
->const_index
[0];
2555 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2556 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2558 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2559 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2560 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2561 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(val
)) / 8;
2562 bool split_stores
= ctx
->ac
.chip_class
== GFX6
&& elem_size_bytes
< 4;
2564 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2565 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2566 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2568 if (writemask
== (1u << ac_get_llvm_num_components(val
)) - 1 &&
2569 stride
== natural_stride
&& !split_stores
) {
2570 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2571 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2572 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2574 val
= LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2575 LLVMGetElementType(LLVMTypeOf(address
)), "");
2576 LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2578 LLVMTypeRef val_type
= LLVMTypeOf(val
);
2579 if (LLVMGetTypeKind(LLVMTypeOf(val
)) == LLVMVectorTypeKind
)
2580 val_type
= LLVMGetElementType(val_type
);
2582 LLVMTypeRef ptr_type
= LLVMPointerType(val_type
,
2583 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2584 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2585 for (unsigned chan
= 0; chan
< 4; chan
++) {
2586 if (!(writemask
& (1 << chan
)))
2589 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, chan
* stride
/ natural_stride
, 0);
2591 LLVMValueRef ptr
= ac_build_gep_ptr(&ctx
->ac
, address
, offset
);
2592 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2594 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2595 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2596 LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2606 if (ctx
->ac
.postponed_kill
)
2607 ac_build_endif(&ctx
->ac
, 7002);
2610 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2613 case GLSL_SAMPLER_DIM_BUF
:
2615 case GLSL_SAMPLER_DIM_1D
:
2616 return array
? 2 : 1;
2617 case GLSL_SAMPLER_DIM_2D
:
2618 return array
? 3 : 2;
2619 case GLSL_SAMPLER_DIM_MS
:
2620 return array
? 4 : 3;
2621 case GLSL_SAMPLER_DIM_3D
:
2622 case GLSL_SAMPLER_DIM_CUBE
:
2624 case GLSL_SAMPLER_DIM_RECT
:
2625 case GLSL_SAMPLER_DIM_SUBPASS
:
2627 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2635 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2636 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2637 LLVMValueRef coord_z
,
2638 LLVMValueRef sample_index
,
2639 LLVMValueRef fmask_desc_ptr
)
2641 unsigned sample_chan
= coord_z
? 3 : 2;
2642 LLVMValueRef addr
[4] = {coord_x
, coord_y
, coord_z
};
2643 addr
[sample_chan
] = sample_index
;
2645 ac_apply_fmask_to_sample(ctx
, fmask_desc_ptr
, addr
, coord_z
!= NULL
);
2646 return addr
[sample_chan
];
2649 static nir_deref_instr
*get_image_deref(const nir_intrinsic_instr
*instr
)
2651 assert(instr
->src
[0].is_ssa
);
2652 return nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2655 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2656 const nir_intrinsic_instr
*instr
,
2657 LLVMValueRef dynamic_index
,
2658 enum ac_descriptor_type desc_type
,
2661 nir_deref_instr
*deref_instr
=
2662 instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
?
2663 nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
) : NULL
;
2665 return get_sampler_desc(ctx
, deref_instr
, desc_type
, &instr
->instr
, dynamic_index
, true, write
);
2668 static void get_image_coords(struct ac_nir_context
*ctx
,
2669 const nir_intrinsic_instr
*instr
,
2670 LLVMValueRef dynamic_desc_index
,
2671 struct ac_image_args
*args
,
2672 enum glsl_sampler_dim dim
,
2675 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2676 LLVMValueRef masks
[] = {
2677 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2678 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2680 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2683 ASSERTED
bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2684 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2685 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2686 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2687 bool gfx9_1d
= ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2688 assert(!add_frag_pos
&& "Input attachments should be lowered by this point.");
2689 count
= image_type_to_components_count(dim
, is_array
);
2691 if (is_ms
&& (instr
->intrinsic
== nir_intrinsic_image_deref_load
||
2692 instr
->intrinsic
== nir_intrinsic_bindless_image_load
)) {
2693 LLVMValueRef fmask_load_address
[3];
2695 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2696 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2698 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2700 fmask_load_address
[2] = NULL
;
2702 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2703 fmask_load_address
[0],
2704 fmask_load_address
[1],
2705 fmask_load_address
[2],
2707 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2708 AC_DESC_FMASK
, &instr
->instr
, dynamic_desc_index
, true, false));
2710 if (count
== 1 && !gfx9_1d
) {
2711 if (instr
->src
[1].ssa
->num_components
)
2712 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2714 args
->coords
[0] = src0
;
2719 for (chan
= 0; chan
< count
; ++chan
) {
2720 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2725 args
->coords
[2] = args
->coords
[1];
2726 args
->coords
[1] = ctx
->ac
.i32_0
;
2728 args
->coords
[1] = ctx
->ac
.i32_0
;
2731 if (ctx
->ac
.chip_class
== GFX9
&&
2732 dim
== GLSL_SAMPLER_DIM_2D
&&
2734 /* The hw can't bind a slice of a 3D image as a 2D
2735 * image, because it ignores BASE_ARRAY if the target
2736 * is 3D. The workaround is to read BASE_ARRAY and set
2737 * it as the 3rd address operand for all 2D images.
2739 LLVMValueRef first_layer
, const5
, mask
;
2741 const5
= LLVMConstInt(ctx
->ac
.i32
, 5, 0);
2742 mask
= LLVMConstInt(ctx
->ac
.i32
, S_008F24_BASE_ARRAY(~0), 0);
2743 first_layer
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
->resource
, const5
, "");
2744 first_layer
= LLVMBuildAnd(ctx
->ac
.builder
, first_layer
, mask
, "");
2746 args
->coords
[count
] = first_layer
;
2752 args
->coords
[count
] = sample_index
;
2758 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2759 const nir_intrinsic_instr
*instr
,
2760 LLVMValueRef dynamic_index
,
2761 bool write
, bool atomic
)
2763 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_BUFFER
, write
);
2764 if (ctx
->ac
.chip_class
== GFX9
&& LLVM_VERSION_MAJOR
< 9 && atomic
) {
2765 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2766 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2767 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2769 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2770 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2771 elem_count
, stride
, "");
2773 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2774 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2779 static LLVMValueRef
enter_waterfall_image(struct ac_nir_context
*ctx
,
2780 struct waterfall_context
*wctx
,
2781 const nir_intrinsic_instr
*instr
)
2783 nir_deref_instr
*deref_instr
= NULL
;
2785 if (instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
)
2786 deref_instr
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2788 LLVMValueRef value
= get_sampler_desc_index(ctx
, deref_instr
, &instr
->instr
, true);
2789 return enter_waterfall(ctx
, wctx
, value
, nir_intrinsic_access(instr
) & ACCESS_NON_UNIFORM
);
2792 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2793 const nir_intrinsic_instr
*instr
,
2798 enum glsl_sampler_dim dim
;
2799 enum gl_access_qualifier access
;
2802 dim
= nir_intrinsic_image_dim(instr
);
2803 access
= nir_intrinsic_access(instr
);
2804 is_array
= nir_intrinsic_image_array(instr
);
2806 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2807 const struct glsl_type
*type
= image_deref
->type
;
2808 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2809 dim
= glsl_get_sampler_dim(type
);
2810 access
= var
->data
.access
;
2811 is_array
= glsl_sampler_type_is_array(type
);
2814 struct waterfall_context wctx
;
2815 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
2817 struct ac_image_args args
= {};
2819 args
.cache_policy
= get_cache_policy(ctx
, access
, false, false);
2821 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2822 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2823 unsigned num_channels
= util_last_bit(mask
);
2824 LLVMValueRef rsrc
, vindex
;
2826 rsrc
= get_image_buffer_descriptor(ctx
, instr
, dynamic_index
, false, false);
2827 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2830 assert(instr
->dest
.is_ssa
);
2831 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2832 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2833 ctx
->ac
.i32_0
, num_channels
,
2836 instr
->dest
.ssa
.bit_size
== 16);
2837 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2839 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2840 res
= ac_to_integer(&ctx
->ac
, res
);
2842 bool level_zero
= nir_src_is_const(instr
->src
[3]) && nir_src_as_uint(instr
->src
[3]) == 0;
2844 args
.opcode
= level_zero
? ac_image_load
: ac_image_load_mip
;
2845 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, false);
2846 get_image_coords(ctx
, instr
, dynamic_index
, &args
, dim
, is_array
);
2847 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2849 args
.lod
= get_src(ctx
, instr
->src
[3]);
2851 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2853 assert(instr
->dest
.is_ssa
);
2854 args
.d16
= instr
->dest
.ssa
.bit_size
== 16;
2856 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2858 return exit_waterfall(ctx
, &wctx
, res
);
2861 static void visit_image_store(struct ac_nir_context
*ctx
,
2862 const nir_intrinsic_instr
*instr
,
2865 if (ctx
->ac
.postponed_kill
) {
2866 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2867 ctx
->ac
.postponed_kill
, "");
2868 ac_build_ifcc(&ctx
->ac
, cond
, 7003);
2871 enum glsl_sampler_dim dim
;
2872 enum gl_access_qualifier access
;
2876 dim
= nir_intrinsic_image_dim(instr
);
2877 access
= nir_intrinsic_access(instr
);
2878 is_array
= nir_intrinsic_image_array(instr
);
2880 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2881 const struct glsl_type
*type
= image_deref
->type
;
2882 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2883 dim
= glsl_get_sampler_dim(type
);
2884 access
= var
->data
.access
;
2885 is_array
= glsl_sampler_type_is_array(type
);
2888 struct waterfall_context wctx
;
2889 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
2891 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
2892 struct ac_image_args args
= {};
2894 args
.cache_policy
= get_cache_policy(ctx
, access
, true, writeonly_memory
);
2896 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2897 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, dynamic_index
, true, false);
2898 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2899 unsigned src_channels
= ac_get_llvm_num_components(src
);
2900 LLVMValueRef vindex
;
2902 if (src_channels
== 3)
2903 src
= ac_build_expand_to_vec4(&ctx
->ac
, src
, 3);
2905 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2906 get_src(ctx
, instr
->src
[1]),
2909 ac_build_buffer_store_format(&ctx
->ac
, rsrc
, src
, vindex
,
2910 ctx
->ac
.i32_0
, args
.cache_policy
);
2912 bool level_zero
= nir_src_is_const(instr
->src
[4]) && nir_src_as_uint(instr
->src
[4]) == 0;
2914 args
.opcode
= level_zero
? ac_image_store
: ac_image_store_mip
;
2915 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2916 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, true);
2917 get_image_coords(ctx
, instr
, dynamic_index
, &args
, dim
, is_array
);
2918 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2920 args
.lod
= get_src(ctx
, instr
->src
[4]);
2922 args
.d16
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(args
.data
[0])) == 16;
2924 ac_build_image_opcode(&ctx
->ac
, &args
);
2927 exit_waterfall(ctx
, &wctx
, NULL
);
2928 if (ctx
->ac
.postponed_kill
)
2929 ac_build_endif(&ctx
->ac
, 7003);
2932 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2933 const nir_intrinsic_instr
*instr
,
2936 if (ctx
->ac
.postponed_kill
) {
2937 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2938 ctx
->ac
.postponed_kill
, "");
2939 ac_build_ifcc(&ctx
->ac
, cond
, 7004);
2942 LLVMValueRef params
[7];
2943 int param_count
= 0;
2945 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
||
2946 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_comp_swap
;
2947 const char *atomic_name
;
2948 char intrinsic_name
[64];
2949 enum ac_atomic_op atomic_subop
;
2950 ASSERTED
int length
;
2952 enum glsl_sampler_dim dim
;
2955 if (instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imin
||
2956 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umin
||
2957 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imax
||
2958 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umax
) {
2959 ASSERTED
const GLenum format
= nir_intrinsic_format(instr
);
2960 assert(format
== GL_R32UI
|| format
== GL_R32I
);
2962 dim
= nir_intrinsic_image_dim(instr
);
2963 is_array
= nir_intrinsic_image_array(instr
);
2965 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
2966 dim
= glsl_get_sampler_dim(type
);
2967 is_array
= glsl_sampler_type_is_array(type
);
2970 struct waterfall_context wctx
;
2971 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
2973 switch (instr
->intrinsic
) {
2974 case nir_intrinsic_bindless_image_atomic_add
:
2975 case nir_intrinsic_image_deref_atomic_add
:
2976 atomic_name
= "add";
2977 atomic_subop
= ac_atomic_add
;
2979 case nir_intrinsic_bindless_image_atomic_imin
:
2980 case nir_intrinsic_image_deref_atomic_imin
:
2981 atomic_name
= "smin";
2982 atomic_subop
= ac_atomic_smin
;
2984 case nir_intrinsic_bindless_image_atomic_umin
:
2985 case nir_intrinsic_image_deref_atomic_umin
:
2986 atomic_name
= "umin";
2987 atomic_subop
= ac_atomic_umin
;
2989 case nir_intrinsic_bindless_image_atomic_imax
:
2990 case nir_intrinsic_image_deref_atomic_imax
:
2991 atomic_name
= "smax";
2992 atomic_subop
= ac_atomic_smax
;
2994 case nir_intrinsic_bindless_image_atomic_umax
:
2995 case nir_intrinsic_image_deref_atomic_umax
:
2996 atomic_name
= "umax";
2997 atomic_subop
= ac_atomic_umax
;
2999 case nir_intrinsic_bindless_image_atomic_and
:
3000 case nir_intrinsic_image_deref_atomic_and
:
3001 atomic_name
= "and";
3002 atomic_subop
= ac_atomic_and
;
3004 case nir_intrinsic_bindless_image_atomic_or
:
3005 case nir_intrinsic_image_deref_atomic_or
:
3007 atomic_subop
= ac_atomic_or
;
3009 case nir_intrinsic_bindless_image_atomic_xor
:
3010 case nir_intrinsic_image_deref_atomic_xor
:
3011 atomic_name
= "xor";
3012 atomic_subop
= ac_atomic_xor
;
3014 case nir_intrinsic_bindless_image_atomic_exchange
:
3015 case nir_intrinsic_image_deref_atomic_exchange
:
3016 atomic_name
= "swap";
3017 atomic_subop
= ac_atomic_swap
;
3019 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3020 case nir_intrinsic_image_deref_atomic_comp_swap
:
3021 atomic_name
= "cmpswap";
3022 atomic_subop
= 0; /* not used */
3024 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
3025 case nir_intrinsic_image_deref_atomic_inc_wrap
: {
3026 atomic_name
= "inc";
3027 atomic_subop
= ac_atomic_inc_wrap
;
3028 /* ATOMIC_INC instruction does:
3029 * value = (value + 1) % (data + 1)
3031 * value = (value + 1) % data
3032 * So replace 'data' by 'data - 1'.
3034 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
] =
3035 LLVMBuildSub(ctx
->ac
.builder
,
3036 ctx
->ssa_defs
[instr
->src
[3].ssa
->index
],
3040 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
3041 case nir_intrinsic_image_deref_atomic_dec_wrap
:
3042 atomic_name
= "dec";
3043 atomic_subop
= ac_atomic_dec_wrap
;
3050 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
3051 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
3053 LLVMValueRef result
;
3054 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
3055 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, dynamic_index
, true, true);
3056 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
3057 ctx
->ac
.i32_0
, ""); /* vindex */
3058 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
3059 if (LLVM_VERSION_MAJOR
>= 9) {
3060 /* XXX: The new raw/struct atomic intrinsics are buggy
3061 * with LLVM 8, see r358579.
3063 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
3064 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
3066 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
3067 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
3069 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
3071 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
3072 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
3075 assert(length
< sizeof(intrinsic_name
));
3076 result
= ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
3077 params
, param_count
, 0);
3079 struct ac_image_args args
= {};
3080 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
3081 args
.atomic
= atomic_subop
;
3082 args
.data
[0] = params
[0];
3084 args
.data
[1] = params
[1];
3085 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, true);
3086 get_image_coords(ctx
, instr
, dynamic_index
, &args
, dim
, is_array
);
3087 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
3089 result
= ac_build_image_opcode(&ctx
->ac
, &args
);
3092 result
= exit_waterfall(ctx
, &wctx
, result
);
3093 if (ctx
->ac
.postponed_kill
)
3094 ac_build_endif(&ctx
->ac
, 7004);
3098 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
3099 nir_intrinsic_instr
*instr
)
3101 struct waterfall_context wctx
;
3102 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
3103 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, false);
3105 LLVMValueRef ret
= ac_build_image_get_sample_count(&ctx
->ac
, rsrc
);
3107 return exit_waterfall(ctx
, &wctx
, ret
);
3110 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
3111 const nir_intrinsic_instr
*instr
,
3116 enum glsl_sampler_dim dim
;
3119 dim
= nir_intrinsic_image_dim(instr
);
3120 is_array
= nir_intrinsic_image_array(instr
);
3122 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
3123 dim
= glsl_get_sampler_dim(type
);
3124 is_array
= glsl_sampler_type_is_array(type
);
3127 struct waterfall_context wctx
;
3128 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
3130 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
3131 res
= get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_BUFFER
, false), true);
3134 struct ac_image_args args
= { 0 };
3136 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
3138 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, false);
3139 args
.opcode
= ac_image_get_resinfo
;
3140 args
.lod
= ctx
->ac
.i32_0
;
3141 args
.attributes
= AC_FUNC_ATTR_READNONE
;
3143 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
3145 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
3147 if (dim
== GLSL_SAMPLER_DIM_CUBE
&& is_array
) {
3148 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
3149 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
3150 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
3151 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
3154 if (ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
&& is_array
) {
3155 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
3156 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
3160 return exit_waterfall(ctx
, &wctx
, res
);
3163 static void emit_membar(struct ac_llvm_context
*ac
,
3164 const nir_intrinsic_instr
*instr
)
3166 unsigned wait_flags
= 0;
3168 switch (instr
->intrinsic
) {
3169 case nir_intrinsic_memory_barrier
:
3170 case nir_intrinsic_group_memory_barrier
:
3171 wait_flags
= AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
3173 case nir_intrinsic_memory_barrier_buffer
:
3174 case nir_intrinsic_memory_barrier_image
:
3175 wait_flags
= AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
3177 case nir_intrinsic_memory_barrier_shared
:
3178 wait_flags
= AC_WAIT_LGKM
;
3184 ac_build_waitcnt(ac
, wait_flags
);
3187 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
3189 /* GFX6 only (thanks to a hw bug workaround):
3190 * The real barrier instruction isn’t needed, because an entire patch
3191 * always fits into a single wave.
3193 if (ac
->chip_class
== GFX6
&& stage
== MESA_SHADER_TESS_CTRL
) {
3194 ac_build_waitcnt(ac
, AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
);
3197 ac_build_s_barrier(ac
);
3200 static void emit_discard(struct ac_nir_context
*ctx
,
3201 const nir_intrinsic_instr
*instr
)
3205 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
3206 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
3207 get_src(ctx
, instr
->src
[0]),
3210 assert(instr
->intrinsic
== nir_intrinsic_discard
);
3211 cond
= ctx
->ac
.i1false
;
3214 ac_build_kill_if_false(&ctx
->ac
, cond
);
3217 static void emit_demote(struct ac_nir_context
*ctx
,
3218 const nir_intrinsic_instr
*instr
)
3222 if (instr
->intrinsic
== nir_intrinsic_demote_if
) {
3223 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
3224 get_src(ctx
, instr
->src
[0]),
3227 assert(instr
->intrinsic
== nir_intrinsic_demote
);
3228 cond
= ctx
->ac
.i1false
;
3231 /* Kill immediately while maintaining WQM. */
3232 ac_build_kill_if_false(&ctx
->ac
, ac_build_wqm_vote(&ctx
->ac
, cond
));
3234 LLVMValueRef mask
= LLVMBuildLoad(ctx
->ac
.builder
, ctx
->ac
.postponed_kill
, "");
3235 mask
= LLVMBuildAnd(ctx
->ac
.builder
, mask
, cond
, "");
3236 LLVMBuildStore(ctx
->ac
.builder
, mask
, ctx
->ac
.postponed_kill
);
3241 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
3243 LLVMValueRef result
;
3244 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
3245 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3246 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3247 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
3249 if (ctx
->ac
.wave_size
== 32)
3250 result
= LLVMBuildLShr(ctx
->ac
.builder
, result
,
3251 LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
3253 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
3257 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
3259 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
3260 LLVMValueRef result
;
3261 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3262 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3263 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
3264 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
3266 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
3271 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
3273 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
3274 return LLVMBuildAnd(ctx
->ac
.builder
,
3275 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3276 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
3278 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
3283 visit_first_invocation(struct ac_nir_context
*ctx
)
3285 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
3286 const char *intr
= ctx
->ac
.wave_size
== 32 ? "llvm.cttz.i32" : "llvm.cttz.i64";
3288 /* The second argument is whether cttz(0) should be defined, but we do not care. */
3289 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
3290 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
, intr
,
3291 ctx
->ac
.iN_wavemask
, args
, 2,
3292 AC_FUNC_ATTR_NOUNWIND
|
3293 AC_FUNC_ATTR_READNONE
);
3295 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
3299 visit_load_shared(struct ac_nir_context
*ctx
,
3300 const nir_intrinsic_instr
*instr
)
3302 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
3304 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0],
3305 instr
->dest
.ssa
.bit_size
);
3307 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
3308 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
3309 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
3310 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
3313 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
3314 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
3318 visit_store_shared(struct ac_nir_context
*ctx
,
3319 const nir_intrinsic_instr
*instr
)
3321 LLVMValueRef derived_ptr
, data
,index
;
3322 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3324 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1],
3325 instr
->src
[0].ssa
->bit_size
);
3326 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
3328 int writemask
= nir_intrinsic_write_mask(instr
);
3329 for (int chan
= 0; chan
< 4; chan
++) {
3330 if (!(writemask
& (1 << chan
))) {
3333 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
3334 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
3335 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
3336 LLVMBuildStore(builder
, data
, derived_ptr
);
3340 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
3341 const nir_intrinsic_instr
*instr
,
3342 LLVMValueRef ptr
, int src_idx
)
3344 if (ctx
->ac
.postponed_kill
) {
3345 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
3346 ctx
->ac
.postponed_kill
, "");
3347 ac_build_ifcc(&ctx
->ac
, cond
, 7005);
3350 LLVMValueRef result
;
3351 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
3353 const char *sync_scope
= LLVM_VERSION_MAJOR
>= 9 ? "workgroup-one-as" : "workgroup";
3355 if (instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
) {
3356 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
3357 if (deref
->mode
== nir_var_mem_global
) {
3358 /* use "singlethread" sync scope to implement relaxed ordering */
3359 sync_scope
= LLVM_VERSION_MAJOR
>= 9 ? "singlethread-one-as" : "singlethread";
3361 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(src
), LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
)));
3362 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ptr_type
, "");
3366 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
3367 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
3368 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
3369 result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, src
, src1
, sync_scope
);
3370 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
3372 LLVMAtomicRMWBinOp op
;
3373 switch (instr
->intrinsic
) {
3374 case nir_intrinsic_shared_atomic_add
:
3375 case nir_intrinsic_deref_atomic_add
:
3376 op
= LLVMAtomicRMWBinOpAdd
;
3378 case nir_intrinsic_shared_atomic_umin
:
3379 case nir_intrinsic_deref_atomic_umin
:
3380 op
= LLVMAtomicRMWBinOpUMin
;
3382 case nir_intrinsic_shared_atomic_umax
:
3383 case nir_intrinsic_deref_atomic_umax
:
3384 op
= LLVMAtomicRMWBinOpUMax
;
3386 case nir_intrinsic_shared_atomic_imin
:
3387 case nir_intrinsic_deref_atomic_imin
:
3388 op
= LLVMAtomicRMWBinOpMin
;
3390 case nir_intrinsic_shared_atomic_imax
:
3391 case nir_intrinsic_deref_atomic_imax
:
3392 op
= LLVMAtomicRMWBinOpMax
;
3394 case nir_intrinsic_shared_atomic_and
:
3395 case nir_intrinsic_deref_atomic_and
:
3396 op
= LLVMAtomicRMWBinOpAnd
;
3398 case nir_intrinsic_shared_atomic_or
:
3399 case nir_intrinsic_deref_atomic_or
:
3400 op
= LLVMAtomicRMWBinOpOr
;
3402 case nir_intrinsic_shared_atomic_xor
:
3403 case nir_intrinsic_deref_atomic_xor
:
3404 op
= LLVMAtomicRMWBinOpXor
;
3406 case nir_intrinsic_shared_atomic_exchange
:
3407 case nir_intrinsic_deref_atomic_exchange
:
3408 op
= LLVMAtomicRMWBinOpXchg
;
3414 result
= ac_build_atomic_rmw(&ctx
->ac
, op
, ptr
, ac_to_integer(&ctx
->ac
, src
), sync_scope
);
3417 if (ctx
->ac
.postponed_kill
)
3418 ac_build_endif(&ctx
->ac
, 7005);
3422 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
3424 LLVMValueRef values
[2];
3425 LLVMValueRef pos
[2];
3427 pos
[0] = ac_to_float(&ctx
->ac
,
3428 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[0]));
3429 pos
[1] = ac_to_float(&ctx
->ac
,
3430 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[1]));
3432 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
3433 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
3434 return ac_build_gather_values(&ctx
->ac
, values
, 2);
3437 static LLVMValueRef
lookup_interp_param(struct ac_nir_context
*ctx
,
3438 enum glsl_interp_mode interp
, unsigned location
)
3441 case INTERP_MODE_FLAT
:
3444 case INTERP_MODE_SMOOTH
:
3445 case INTERP_MODE_NONE
:
3446 if (location
== INTERP_CENTER
)
3447 return ac_get_arg(&ctx
->ac
, ctx
->args
->persp_center
);
3448 else if (location
== INTERP_CENTROID
)
3449 return ctx
->abi
->persp_centroid
;
3450 else if (location
== INTERP_SAMPLE
)
3451 return ac_get_arg(&ctx
->ac
, ctx
->args
->persp_sample
);
3453 case INTERP_MODE_NOPERSPECTIVE
:
3454 if (location
== INTERP_CENTER
)
3455 return ac_get_arg(&ctx
->ac
, ctx
->args
->linear_center
);
3456 else if (location
== INTERP_CENTROID
)
3457 return ctx
->abi
->linear_centroid
;
3458 else if (location
== INTERP_SAMPLE
)
3459 return ac_get_arg(&ctx
->ac
, ctx
->args
->linear_sample
);
3465 static LLVMValueRef
barycentric_center(struct ac_nir_context
*ctx
,
3468 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3469 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3472 static LLVMValueRef
barycentric_offset(struct ac_nir_context
*ctx
,
3474 LLVMValueRef offset
)
3476 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3477 LLVMValueRef src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_0
, ""));
3478 LLVMValueRef src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_1
, ""));
3480 LLVMValueRef ij_out
[2];
3481 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
3484 * take the I then J parameters, and the DDX/Y for it, and
3485 * calculate the IJ inputs for the interpolator.
3486 * temp1 = ddx * offset/sample.x + I;
3487 * interp_param.I = ddy * offset/sample.y + temp1;
3488 * temp1 = ddx * offset/sample.x + J;
3489 * interp_param.J = ddy * offset/sample.y + temp1;
3491 for (unsigned i
= 0; i
< 2; i
++) {
3492 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
3493 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
3494 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3495 ddxy_out
, ix_ll
, "");
3496 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3497 ddxy_out
, iy_ll
, "");
3498 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3499 interp_param
, ix_ll
, "");
3500 LLVMValueRef temp1
, temp2
;
3502 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
3505 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
3506 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
3508 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
3509 temp2
, ctx
->ac
.i32
, "");
3511 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
3512 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3515 static LLVMValueRef
barycentric_centroid(struct ac_nir_context
*ctx
,
3518 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTROID
);
3519 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3522 static LLVMValueRef
barycentric_at_sample(struct ac_nir_context
*ctx
,
3524 LLVMValueRef sample_id
)
3526 if (ctx
->abi
->interp_at_sample_force_center
)
3527 return barycentric_center(ctx
, mode
);
3529 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
3531 /* fetch sample ID */
3532 LLVMValueRef sample_pos
= ctx
->abi
->load_sample_position(ctx
->abi
, sample_id
);
3534 LLVMValueRef src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_0
, "");
3535 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
3536 LLVMValueRef src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_1
, "");
3537 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
3538 LLVMValueRef coords
[] = { src_c0
, src_c1
};
3539 LLVMValueRef offset
= ac_build_gather_values(&ctx
->ac
, coords
, 2);
3541 return barycentric_offset(ctx
, mode
, offset
);
3545 static LLVMValueRef
barycentric_sample(struct ac_nir_context
*ctx
,
3548 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_SAMPLE
);
3549 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3552 static LLVMValueRef
barycentric_model(struct ac_nir_context
*ctx
)
3554 return LLVMBuildBitCast(ctx
->ac
.builder
,
3555 ac_get_arg(&ctx
->ac
, ctx
->args
->pull_model
),
3559 static LLVMValueRef
load_interpolated_input(struct ac_nir_context
*ctx
,
3560 LLVMValueRef interp_param
,
3561 unsigned index
, unsigned comp_start
,
3562 unsigned num_components
,
3565 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3566 LLVMValueRef interp_param_f
;
3568 interp_param_f
= LLVMBuildBitCast(ctx
->ac
.builder
,
3569 interp_param
, ctx
->ac
.v2f32
, "");
3570 LLVMValueRef i
= LLVMBuildExtractElement(
3571 ctx
->ac
.builder
, interp_param_f
, ctx
->ac
.i32_0
, "");
3572 LLVMValueRef j
= LLVMBuildExtractElement(
3573 ctx
->ac
.builder
, interp_param_f
, ctx
->ac
.i32_1
, "");
3575 /* Workaround for issue 2647: kill threads with infinite interpolation coeffs */
3576 if (ctx
->verified_interp
&&
3577 !_mesa_hash_table_search(ctx
->verified_interp
, interp_param
)) {
3578 LLVMValueRef args
[2];
3580 args
[1] = LLVMConstInt(ctx
->ac
.i32
, S_NAN
| Q_NAN
| N_INFINITY
| P_INFINITY
, false);
3581 LLVMValueRef cond
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.class.f32", ctx
->ac
.i1
,
3582 args
, 2, AC_FUNC_ATTR_READNONE
);
3583 ac_build_kill_if_false(&ctx
->ac
, LLVMBuildNot(ctx
->ac
.builder
, cond
, ""));
3584 _mesa_hash_table_insert(ctx
->verified_interp
, interp_param
, interp_param
);
3587 LLVMValueRef values
[4];
3588 assert(bitsize
== 16 || bitsize
== 32);
3589 for (unsigned comp
= 0; comp
< num_components
; comp
++) {
3590 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, comp_start
+ comp
, false);
3591 if (bitsize
== 16) {
3592 values
[comp
] = ac_build_fs_interp_f16(&ctx
->ac
, llvm_chan
, attr_number
,
3593 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
), i
, j
);
3595 values
[comp
] = ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3596 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
), i
, j
);
3600 return ac_to_integer(&ctx
->ac
, ac_build_gather_values(&ctx
->ac
, values
, num_components
));
3603 static LLVMValueRef
load_input(struct ac_nir_context
*ctx
,
3604 nir_intrinsic_instr
*instr
)
3606 unsigned offset_idx
= instr
->intrinsic
== nir_intrinsic_load_input
? 0 : 1;
3608 /* We only lower inputs for fragment shaders ATM */
3609 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[offset_idx
]);
3611 assert(offset
[0].i32
== 0);
3613 unsigned component
= nir_intrinsic_component(instr
);
3614 unsigned index
= nir_intrinsic_base(instr
);
3615 unsigned vertex_id
= 2; /* P0 */
3617 if (instr
->intrinsic
== nir_intrinsic_load_input_vertex
) {
3618 nir_const_value
*src0
= nir_src_as_const_value(instr
->src
[0]);
3620 switch (src0
[0].i32
) {
3631 unreachable("Invalid vertex index");
3635 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3636 LLVMValueRef values
[8];
3638 /* Each component of a 64-bit value takes up two GL-level channels. */
3639 unsigned num_components
= instr
->dest
.ssa
.num_components
;
3640 unsigned bit_size
= instr
->dest
.ssa
.bit_size
;
3642 bit_size
== 64 ? num_components
* 2 : num_components
;
3644 for (unsigned chan
= 0; chan
< channels
; chan
++) {
3645 if (component
+ chan
> 4)
3646 attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
+ 1, false);
3647 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, (component
+ chan
) % 4, false);
3648 values
[chan
] = ac_build_fs_interp_mov(&ctx
->ac
,
3649 LLVMConstInt(ctx
->ac
.i32
, vertex_id
, false),
3652 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
));
3653 values
[chan
] = LLVMBuildBitCast(ctx
->ac
.builder
, values
[chan
], ctx
->ac
.i32
, "");
3654 values
[chan
] = LLVMBuildTruncOrBitCast(ctx
->ac
.builder
, values
[chan
],
3655 bit_size
== 16 ? ctx
->ac
.i16
: ctx
->ac
.i32
, "");
3658 LLVMValueRef result
= ac_build_gather_values(&ctx
->ac
, values
, channels
);
3659 if (bit_size
== 64) {
3660 LLVMTypeRef type
= num_components
== 1 ? ctx
->ac
.i64
:
3661 LLVMVectorType(ctx
->ac
.i64
, num_components
);
3662 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
, type
, "");
3667 static void visit_intrinsic(struct ac_nir_context
*ctx
,
3668 nir_intrinsic_instr
*instr
)
3670 LLVMValueRef result
= NULL
;
3672 switch (instr
->intrinsic
) {
3673 case nir_intrinsic_ballot
:
3674 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3675 if (ctx
->ac
.ballot_mask_bits
> ctx
->ac
.wave_size
)
3676 result
= LLVMBuildZExt(ctx
->ac
.builder
, result
, ctx
->ac
.iN_ballotmask
, "");
3678 case nir_intrinsic_read_invocation
:
3679 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3680 get_src(ctx
, instr
->src
[1]));
3682 case nir_intrinsic_read_first_invocation
:
3683 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
3685 case nir_intrinsic_load_subgroup_invocation
:
3686 result
= ac_get_thread_id(&ctx
->ac
);
3688 case nir_intrinsic_load_work_group_id
: {
3689 LLVMValueRef values
[3];
3691 for (int i
= 0; i
< 3; i
++) {
3692 values
[i
] = ctx
->args
->workgroup_ids
[i
].used
?
3693 ac_get_arg(&ctx
->ac
, ctx
->args
->workgroup_ids
[i
]) : ctx
->ac
.i32_0
;
3696 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
3699 case nir_intrinsic_load_base_vertex
:
3700 case nir_intrinsic_load_first_vertex
:
3701 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
3703 case nir_intrinsic_load_local_group_size
:
3704 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
3706 case nir_intrinsic_load_vertex_id
:
3707 result
= LLVMBuildAdd(ctx
->ac
.builder
,
3708 ac_get_arg(&ctx
->ac
, ctx
->args
->vertex_id
),
3709 ac_get_arg(&ctx
->ac
, ctx
->args
->base_vertex
), "");
3711 case nir_intrinsic_load_vertex_id_zero_base
: {
3712 result
= ctx
->abi
->vertex_id
;
3715 case nir_intrinsic_load_local_invocation_id
: {
3716 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->local_invocation_ids
);
3719 case nir_intrinsic_load_base_instance
:
3720 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->start_instance
);
3722 case nir_intrinsic_load_draw_id
:
3723 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->draw_id
);
3725 case nir_intrinsic_load_view_index
:
3726 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->view_index
);
3728 case nir_intrinsic_load_invocation_id
:
3729 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3730 result
= ac_unpack_param(&ctx
->ac
,
3731 ac_get_arg(&ctx
->ac
, ctx
->args
->tcs_rel_ids
),
3734 if (ctx
->ac
.chip_class
>= GFX10
) {
3735 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3736 ac_get_arg(&ctx
->ac
, ctx
->args
->gs_invocation_id
),
3737 LLVMConstInt(ctx
->ac
.i32
, 127, 0), "");
3739 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->gs_invocation_id
);
3743 case nir_intrinsic_load_primitive_id
:
3744 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3745 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->gs_prim_id
);
3746 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3747 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->tcs_patch_id
);
3748 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3749 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->tes_patch_id
);
3751 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3753 case nir_intrinsic_load_sample_id
:
3754 result
= ac_unpack_param(&ctx
->ac
,
3755 ac_get_arg(&ctx
->ac
, ctx
->args
->ancillary
),
3758 case nir_intrinsic_load_sample_pos
:
3759 result
= load_sample_pos(ctx
);
3761 case nir_intrinsic_load_sample_mask_in
:
3762 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3764 case nir_intrinsic_load_frag_coord
: {
3765 LLVMValueRef values
[4] = {
3766 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[0]),
3767 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[1]),
3768 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[2]),
3769 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
,
3770 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[3]))
3772 result
= ac_to_integer(&ctx
->ac
,
3773 ac_build_gather_values(&ctx
->ac
, values
, 4));
3776 case nir_intrinsic_load_layer_id
:
3777 result
= ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)];
3779 case nir_intrinsic_load_front_face
:
3780 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->front_face
);
3782 case nir_intrinsic_load_helper_invocation
:
3783 result
= ac_build_load_helper_invocation(&ctx
->ac
);
3785 case nir_intrinsic_is_helper_invocation
:
3786 result
= ac_build_is_helper_invocation(&ctx
->ac
);
3788 case nir_intrinsic_load_color0
:
3789 result
= ctx
->abi
->color0
;
3791 case nir_intrinsic_load_color1
:
3792 result
= ctx
->abi
->color1
;
3794 case nir_intrinsic_load_user_data_amd
:
3795 assert(LLVMTypeOf(ctx
->abi
->user_data
) == ctx
->ac
.v4i32
);
3796 result
= ctx
->abi
->user_data
;
3798 case nir_intrinsic_load_instance_id
:
3799 result
= ctx
->abi
->instance_id
;
3801 case nir_intrinsic_load_num_work_groups
:
3802 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->num_work_groups
);
3804 case nir_intrinsic_load_local_invocation_index
:
3805 result
= visit_load_local_invocation_index(ctx
);
3807 case nir_intrinsic_load_subgroup_id
:
3808 result
= visit_load_subgroup_id(ctx
);
3810 case nir_intrinsic_load_num_subgroups
:
3811 result
= visit_load_num_subgroups(ctx
);
3813 case nir_intrinsic_first_invocation
:
3814 result
= visit_first_invocation(ctx
);
3816 case nir_intrinsic_load_push_constant
:
3817 result
= visit_load_push_constant(ctx
, instr
);
3819 case nir_intrinsic_vulkan_resource_index
: {
3820 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3821 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3822 unsigned binding
= nir_intrinsic_binding(instr
);
3824 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3828 case nir_intrinsic_vulkan_resource_reindex
:
3829 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3831 case nir_intrinsic_store_ssbo
:
3832 visit_store_ssbo(ctx
, instr
);
3834 case nir_intrinsic_load_ssbo
:
3835 result
= visit_load_buffer(ctx
, instr
);
3837 case nir_intrinsic_ssbo_atomic_add
:
3838 case nir_intrinsic_ssbo_atomic_imin
:
3839 case nir_intrinsic_ssbo_atomic_umin
:
3840 case nir_intrinsic_ssbo_atomic_imax
:
3841 case nir_intrinsic_ssbo_atomic_umax
:
3842 case nir_intrinsic_ssbo_atomic_and
:
3843 case nir_intrinsic_ssbo_atomic_or
:
3844 case nir_intrinsic_ssbo_atomic_xor
:
3845 case nir_intrinsic_ssbo_atomic_exchange
:
3846 case nir_intrinsic_ssbo_atomic_comp_swap
:
3847 result
= visit_atomic_ssbo(ctx
, instr
);
3849 case nir_intrinsic_load_ubo
:
3850 result
= visit_load_ubo_buffer(ctx
, instr
);
3852 case nir_intrinsic_get_buffer_size
:
3853 result
= visit_get_buffer_size(ctx
, instr
);
3855 case nir_intrinsic_load_deref
:
3856 result
= visit_load_var(ctx
, instr
);
3858 case nir_intrinsic_store_deref
:
3859 visit_store_var(ctx
, instr
);
3861 case nir_intrinsic_load_shared
:
3862 result
= visit_load_shared(ctx
, instr
);
3864 case nir_intrinsic_store_shared
:
3865 visit_store_shared(ctx
, instr
);
3867 case nir_intrinsic_bindless_image_samples
:
3868 case nir_intrinsic_image_deref_samples
:
3869 result
= visit_image_samples(ctx
, instr
);
3871 case nir_intrinsic_bindless_image_load
:
3872 result
= visit_image_load(ctx
, instr
, true);
3874 case nir_intrinsic_image_deref_load
:
3875 result
= visit_image_load(ctx
, instr
, false);
3877 case nir_intrinsic_bindless_image_store
:
3878 visit_image_store(ctx
, instr
, true);
3880 case nir_intrinsic_image_deref_store
:
3881 visit_image_store(ctx
, instr
, false);
3883 case nir_intrinsic_bindless_image_atomic_add
:
3884 case nir_intrinsic_bindless_image_atomic_imin
:
3885 case nir_intrinsic_bindless_image_atomic_umin
:
3886 case nir_intrinsic_bindless_image_atomic_imax
:
3887 case nir_intrinsic_bindless_image_atomic_umax
:
3888 case nir_intrinsic_bindless_image_atomic_and
:
3889 case nir_intrinsic_bindless_image_atomic_or
:
3890 case nir_intrinsic_bindless_image_atomic_xor
:
3891 case nir_intrinsic_bindless_image_atomic_exchange
:
3892 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3893 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
3894 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
3895 result
= visit_image_atomic(ctx
, instr
, true);
3897 case nir_intrinsic_image_deref_atomic_add
:
3898 case nir_intrinsic_image_deref_atomic_imin
:
3899 case nir_intrinsic_image_deref_atomic_umin
:
3900 case nir_intrinsic_image_deref_atomic_imax
:
3901 case nir_intrinsic_image_deref_atomic_umax
:
3902 case nir_intrinsic_image_deref_atomic_and
:
3903 case nir_intrinsic_image_deref_atomic_or
:
3904 case nir_intrinsic_image_deref_atomic_xor
:
3905 case nir_intrinsic_image_deref_atomic_exchange
:
3906 case nir_intrinsic_image_deref_atomic_comp_swap
:
3907 case nir_intrinsic_image_deref_atomic_inc_wrap
:
3908 case nir_intrinsic_image_deref_atomic_dec_wrap
:
3909 result
= visit_image_atomic(ctx
, instr
, false);
3911 case nir_intrinsic_bindless_image_size
:
3912 result
= visit_image_size(ctx
, instr
, true);
3914 case nir_intrinsic_image_deref_size
:
3915 result
= visit_image_size(ctx
, instr
, false);
3917 case nir_intrinsic_shader_clock
:
3918 result
= ac_build_shader_clock(&ctx
->ac
,
3919 nir_intrinsic_memory_scope(instr
));
3921 case nir_intrinsic_discard
:
3922 case nir_intrinsic_discard_if
:
3923 emit_discard(ctx
, instr
);
3925 case nir_intrinsic_demote
:
3926 case nir_intrinsic_demote_if
:
3927 emit_demote(ctx
, instr
);
3929 case nir_intrinsic_memory_barrier
:
3930 case nir_intrinsic_group_memory_barrier
:
3931 case nir_intrinsic_memory_barrier_buffer
:
3932 case nir_intrinsic_memory_barrier_image
:
3933 case nir_intrinsic_memory_barrier_shared
:
3934 emit_membar(&ctx
->ac
, instr
);
3936 case nir_intrinsic_memory_barrier_tcs_patch
:
3938 case nir_intrinsic_control_barrier
:
3939 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
3941 case nir_intrinsic_shared_atomic_add
:
3942 case nir_intrinsic_shared_atomic_imin
:
3943 case nir_intrinsic_shared_atomic_umin
:
3944 case nir_intrinsic_shared_atomic_imax
:
3945 case nir_intrinsic_shared_atomic_umax
:
3946 case nir_intrinsic_shared_atomic_and
:
3947 case nir_intrinsic_shared_atomic_or
:
3948 case nir_intrinsic_shared_atomic_xor
:
3949 case nir_intrinsic_shared_atomic_exchange
:
3950 case nir_intrinsic_shared_atomic_comp_swap
: {
3951 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0],
3952 instr
->src
[1].ssa
->bit_size
);
3953 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3956 case nir_intrinsic_deref_atomic_add
:
3957 case nir_intrinsic_deref_atomic_imin
:
3958 case nir_intrinsic_deref_atomic_umin
:
3959 case nir_intrinsic_deref_atomic_imax
:
3960 case nir_intrinsic_deref_atomic_umax
:
3961 case nir_intrinsic_deref_atomic_and
:
3962 case nir_intrinsic_deref_atomic_or
:
3963 case nir_intrinsic_deref_atomic_xor
:
3964 case nir_intrinsic_deref_atomic_exchange
:
3965 case nir_intrinsic_deref_atomic_comp_swap
: {
3966 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
3967 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
3970 case nir_intrinsic_load_barycentric_pixel
:
3971 result
= barycentric_center(ctx
, nir_intrinsic_interp_mode(instr
));
3973 case nir_intrinsic_load_barycentric_centroid
:
3974 result
= barycentric_centroid(ctx
, nir_intrinsic_interp_mode(instr
));
3976 case nir_intrinsic_load_barycentric_sample
:
3977 result
= barycentric_sample(ctx
, nir_intrinsic_interp_mode(instr
));
3979 case nir_intrinsic_load_barycentric_model
:
3980 result
= barycentric_model(ctx
);
3982 case nir_intrinsic_load_barycentric_at_offset
: {
3983 LLVMValueRef offset
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3984 result
= barycentric_offset(ctx
, nir_intrinsic_interp_mode(instr
), offset
);
3987 case nir_intrinsic_load_barycentric_at_sample
: {
3988 LLVMValueRef sample_id
= get_src(ctx
, instr
->src
[0]);
3989 result
= barycentric_at_sample(ctx
, nir_intrinsic_interp_mode(instr
), sample_id
);
3992 case nir_intrinsic_load_interpolated_input
: {
3993 /* We assume any indirect loads have been lowered away */
3994 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[1]);
3996 assert(offset
[0].i32
== 0);
3998 LLVMValueRef interp_param
= get_src(ctx
, instr
->src
[0]);
3999 unsigned index
= nir_intrinsic_base(instr
);
4000 unsigned component
= nir_intrinsic_component(instr
);
4001 result
= load_interpolated_input(ctx
, interp_param
, index
,
4003 instr
->dest
.ssa
.num_components
,
4004 instr
->dest
.ssa
.bit_size
);
4007 case nir_intrinsic_load_input
:
4008 case nir_intrinsic_load_input_vertex
:
4009 result
= load_input(ctx
, instr
);
4011 case nir_intrinsic_emit_vertex
:
4012 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
4014 case nir_intrinsic_emit_vertex_with_counter
: {
4015 unsigned stream
= nir_intrinsic_stream_id(instr
);
4016 LLVMValueRef next_vertex
= get_src(ctx
, instr
->src
[0]);
4017 ctx
->abi
->emit_vertex_with_counter(ctx
->abi
, stream
,
4022 case nir_intrinsic_end_primitive
:
4023 case nir_intrinsic_end_primitive_with_counter
:
4024 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
4026 case nir_intrinsic_load_tess_coord
:
4027 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
4029 case nir_intrinsic_load_tess_level_outer
:
4030 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, false);
4032 case nir_intrinsic_load_tess_level_inner
:
4033 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, false);
4035 case nir_intrinsic_load_tess_level_outer_default
:
4036 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, true);
4038 case nir_intrinsic_load_tess_level_inner_default
:
4039 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, true);
4041 case nir_intrinsic_load_patch_vertices_in
:
4042 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
4044 case nir_intrinsic_vote_all
: {
4045 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
4046 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
4049 case nir_intrinsic_vote_any
: {
4050 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
4051 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
4054 case nir_intrinsic_shuffle
:
4055 if (ctx
->ac
.chip_class
== GFX8
||
4056 ctx
->ac
.chip_class
== GFX9
||
4057 (ctx
->ac
.chip_class
>= GFX10
&& ctx
->ac
.wave_size
== 32)) {
4058 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
4059 get_src(ctx
, instr
->src
[1]));
4061 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
4062 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
4063 LLVMTypeRef type
= LLVMTypeOf(src
);
4064 struct waterfall_context wctx
;
4065 LLVMValueRef index_val
;
4067 index_val
= enter_waterfall(ctx
, &wctx
, index
, true);
4069 src
= LLVMBuildZExt(ctx
->ac
.builder
, src
,
4072 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.readlane",
4074 (LLVMValueRef
[]) { src
, index_val
}, 2,
4075 AC_FUNC_ATTR_READNONE
|
4076 AC_FUNC_ATTR_CONVERGENT
);
4078 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, type
, "");
4080 result
= exit_waterfall(ctx
, &wctx
, result
);
4083 case nir_intrinsic_reduce
:
4084 result
= ac_build_reduce(&ctx
->ac
,
4085 get_src(ctx
, instr
->src
[0]),
4086 instr
->const_index
[0],
4087 instr
->const_index
[1]);
4089 case nir_intrinsic_inclusive_scan
:
4090 result
= ac_build_inclusive_scan(&ctx
->ac
,
4091 get_src(ctx
, instr
->src
[0]),
4092 instr
->const_index
[0]);
4094 case nir_intrinsic_exclusive_scan
:
4095 result
= ac_build_exclusive_scan(&ctx
->ac
,
4096 get_src(ctx
, instr
->src
[0]),
4097 instr
->const_index
[0]);
4099 case nir_intrinsic_quad_broadcast
: {
4100 unsigned lane
= nir_src_as_uint(instr
->src
[1]);
4101 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
4102 lane
, lane
, lane
, lane
);
4105 case nir_intrinsic_quad_swap_horizontal
:
4106 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
4108 case nir_intrinsic_quad_swap_vertical
:
4109 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
4111 case nir_intrinsic_quad_swap_diagonal
:
4112 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
4114 case nir_intrinsic_quad_swizzle_amd
: {
4115 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
4116 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
4117 mask
& 0x3, (mask
>> 2) & 0x3,
4118 (mask
>> 4) & 0x3, (mask
>> 6) & 0x3);
4121 case nir_intrinsic_masked_swizzle_amd
: {
4122 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
4123 result
= ac_build_ds_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), mask
);
4126 case nir_intrinsic_write_invocation_amd
:
4127 result
= ac_build_writelane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
4128 get_src(ctx
, instr
->src
[1]),
4129 get_src(ctx
, instr
->src
[2]));
4131 case nir_intrinsic_mbcnt_amd
:
4132 result
= ac_build_mbcnt(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
4134 case nir_intrinsic_load_scratch
: {
4135 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
4136 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
4138 LLVMTypeRef comp_type
=
4139 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
4140 LLVMTypeRef vec_type
=
4141 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
4142 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
4143 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
4144 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
4145 LLVMPointerType(vec_type
, addr_space
), "");
4146 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
4149 case nir_intrinsic_store_scratch
: {
4150 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
4151 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
4153 LLVMTypeRef comp_type
=
4154 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->src
[0].ssa
->bit_size
);
4155 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
4156 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
4157 LLVMPointerType(comp_type
, addr_space
), "");
4158 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
4159 unsigned wrmask
= nir_intrinsic_write_mask(instr
);
4162 u_bit_scan_consecutive_range(&wrmask
, &start
, &count
);
4164 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, start
, false);
4165 LLVMValueRef offset_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &offset
, 1, "");
4166 LLVMTypeRef vec_type
=
4167 count
== 1 ? comp_type
: LLVMVectorType(comp_type
, count
);
4168 offset_ptr
= LLVMBuildBitCast(ctx
->ac
.builder
,
4170 LLVMPointerType(vec_type
, addr_space
),
4172 LLVMValueRef offset_src
=
4173 ac_extract_components(&ctx
->ac
, src
, start
, count
);
4174 LLVMBuildStore(ctx
->ac
.builder
, offset_src
, offset_ptr
);
4178 case nir_intrinsic_load_constant
: {
4179 unsigned base
= nir_intrinsic_base(instr
);
4180 unsigned range
= nir_intrinsic_range(instr
);
4182 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
4183 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
4184 LLVMConstInt(ctx
->ac
.i32
, base
, false), "");
4186 /* Clamp the offset to avoid out-of-bound access because global
4187 * instructions can't handle them.
4189 LLVMValueRef size
= LLVMConstInt(ctx
->ac
.i32
, base
+ range
, false);
4190 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
,
4192 offset
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, offset
, size
, "");
4194 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->constant_data
,
4196 LLVMTypeRef comp_type
=
4197 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
4198 LLVMTypeRef vec_type
=
4199 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
4200 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
4201 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
4202 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
4203 LLVMPointerType(vec_type
, addr_space
), "");
4204 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
4208 fprintf(stderr
, "Unknown intrinsic: ");
4209 nir_print_instr(&instr
->instr
, stderr
);
4210 fprintf(stderr
, "\n");
4214 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4218 static LLVMValueRef
get_bindless_index_from_uniform(struct ac_nir_context
*ctx
,
4219 unsigned base_index
,
4220 unsigned constant_index
,
4221 LLVMValueRef dynamic_index
)
4223 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, base_index
* 4, 0);
4224 LLVMValueRef index
= LLVMBuildAdd(ctx
->ac
.builder
, dynamic_index
,
4225 LLVMConstInt(ctx
->ac
.i32
, constant_index
, 0), "");
4227 /* Bindless uniforms are 64bit so multiple index by 8 */
4228 index
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i32
, 8, 0), "");
4229 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, index
, "");
4231 LLVMValueRef ubo_index
= ctx
->abi
->load_ubo(ctx
->abi
, ctx
->ac
.i32_0
);
4233 LLVMValueRef ret
= ac_build_buffer_load(&ctx
->ac
, ubo_index
, 1, NULL
, offset
,
4234 NULL
, 0, 0, true, true);
4236 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ctx
->ac
.i32
, "");
4239 struct sampler_desc_address
{
4240 unsigned descriptor_set
;
4241 unsigned base_index
; /* binding in vulkan */
4242 unsigned constant_index
;
4243 LLVMValueRef dynamic_index
;
4248 static struct sampler_desc_address
4249 get_sampler_desc_internal(struct ac_nir_context
*ctx
,
4250 nir_deref_instr
*deref_instr
,
4251 const nir_instr
*instr
,
4254 LLVMValueRef index
= NULL
;
4255 unsigned constant_index
= 0;
4256 unsigned descriptor_set
;
4257 unsigned base_index
;
4258 bool bindless
= false;
4263 nir_intrinsic_instr
*img_instr
= nir_instr_as_intrinsic(instr
);
4266 index
= get_src(ctx
, img_instr
->src
[0]);
4268 nir_tex_instr
*tex_instr
= nir_instr_as_tex(instr
);
4269 int sampSrcIdx
= nir_tex_instr_src_index(tex_instr
,
4270 nir_tex_src_sampler_handle
);
4271 if (sampSrcIdx
!= -1) {
4274 index
= get_src(ctx
, tex_instr
->src
[sampSrcIdx
].src
);
4276 assert(tex_instr
&& !image
);
4277 base_index
= tex_instr
->sampler_index
;
4281 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
4282 if (deref_instr
->deref_type
== nir_deref_type_array
) {
4283 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
4287 if (nir_src_is_const(deref_instr
->arr
.index
)) {
4288 constant_index
+= array_size
* nir_src_as_uint(deref_instr
->arr
.index
);
4290 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
4292 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
4293 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
4298 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
4301 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
4302 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
4303 unsigned sidx
= deref_instr
->strct
.index
;
4304 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
4305 constant_index
+= glsl_get_struct_location_offset(deref_instr
->type
, sidx
);
4307 unreachable("Unsupported deref type");
4310 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
4312 if (deref_instr
->var
->data
.bindless
) {
4313 /* For now just assert on unhandled variable types */
4314 assert(deref_instr
->var
->data
.mode
== nir_var_uniform
);
4316 base_index
= deref_instr
->var
->data
.driver_location
;
4319 index
= index
? index
: ctx
->ac
.i32_0
;
4320 index
= get_bindless_index_from_uniform(ctx
, base_index
,
4321 constant_index
, index
);
4323 base_index
= deref_instr
->var
->data
.binding
;
4325 return (struct sampler_desc_address
) {
4326 .descriptor_set
= descriptor_set
,
4327 .base_index
= base_index
,
4328 .constant_index
= constant_index
,
4329 .dynamic_index
= index
,
4331 .bindless
= bindless
,
4335 /* Extract any possibly divergent index into a separate value that can be fed
4336 * into get_sampler_desc with the same arguments. */
4337 static LLVMValueRef
get_sampler_desc_index(struct ac_nir_context
*ctx
,
4338 nir_deref_instr
*deref_instr
,
4339 const nir_instr
*instr
,
4342 struct sampler_desc_address addr
= get_sampler_desc_internal(ctx
, deref_instr
, instr
, image
);
4343 return addr
.dynamic_index
;
4346 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
4347 nir_deref_instr
*deref_instr
,
4348 enum ac_descriptor_type desc_type
,
4349 const nir_instr
*instr
,
4351 bool image
, bool write
)
4353 struct sampler_desc_address addr
= get_sampler_desc_internal(ctx
, deref_instr
, instr
, image
);
4354 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
4355 addr
.descriptor_set
,
4357 addr
.constant_index
, index
,
4358 desc_type
, addr
.image
, write
, addr
.bindless
);
4361 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
4364 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
4365 * filtering manually. The driver sets img7 to a mask clearing
4366 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
4367 * s_and_b32 samp0, samp0, img7
4370 * The ANISO_OVERRIDE sampler field enables this fix in TA.
4372 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
4373 LLVMValueRef res
, LLVMValueRef samp
)
4375 LLVMBuilderRef builder
= ctx
->ac
.builder
;
4376 LLVMValueRef img7
, samp0
;
4378 if (ctx
->ac
.chip_class
>= GFX8
)
4381 img7
= LLVMBuildExtractElement(builder
, res
,
4382 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
4383 samp0
= LLVMBuildExtractElement(builder
, samp
,
4384 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
4385 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
4386 return LLVMBuildInsertElement(builder
, samp
, samp0
,
4387 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
4390 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
4391 nir_tex_instr
*instr
,
4392 struct waterfall_context
*wctx
,
4393 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
4394 LLVMValueRef
*fmask_ptr
)
4396 nir_deref_instr
*texture_deref_instr
= NULL
;
4397 nir_deref_instr
*sampler_deref_instr
= NULL
;
4400 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
4401 switch (instr
->src
[i
].src_type
) {
4402 case nir_tex_src_texture_deref
:
4403 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
4405 case nir_tex_src_sampler_deref
:
4406 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
4408 case nir_tex_src_plane
:
4409 plane
= nir_src_as_int(instr
->src
[i
].src
);
4416 LLVMValueRef texture_dynamic_index
= get_sampler_desc_index(ctx
, texture_deref_instr
,
4417 &instr
->instr
, false);
4418 if (!sampler_deref_instr
)
4419 sampler_deref_instr
= texture_deref_instr
;
4421 LLVMValueRef sampler_dynamic_index
= get_sampler_desc_index(ctx
, sampler_deref_instr
,
4422 &instr
->instr
, false);
4423 if (instr
->texture_non_uniform
)
4424 texture_dynamic_index
= enter_waterfall(ctx
, wctx
+ 0, texture_dynamic_index
, true);
4426 if (instr
->sampler_non_uniform
)
4427 sampler_dynamic_index
= enter_waterfall(ctx
, wctx
+ 1, sampler_dynamic_index
, true);
4429 enum ac_descriptor_type main_descriptor
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
? AC_DESC_BUFFER
: AC_DESC_IMAGE
;
4432 assert(instr
->op
!= nir_texop_txf_ms
&&
4433 instr
->op
!= nir_texop_samples_identical
);
4434 assert(instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
);
4436 main_descriptor
= AC_DESC_PLANE_0
+ plane
;
4439 if (instr
->op
== nir_texop_fragment_mask_fetch
) {
4440 /* The fragment mask is fetched from the compressed
4441 * multisampled surface.
4443 main_descriptor
= AC_DESC_FMASK
;
4446 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, main_descriptor
, &instr
->instr
,
4447 texture_dynamic_index
, false, false);
4450 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, &instr
->instr
,
4451 sampler_dynamic_index
, false, false);
4452 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
4453 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
4455 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
4456 instr
->op
== nir_texop_samples_identical
))
4457 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
,
4458 &instr
->instr
, texture_dynamic_index
, false, false);
4461 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
4464 coord
= ac_to_float(ctx
, coord
);
4465 coord
= ac_build_round(ctx
, coord
);
4466 coord
= ac_to_integer(ctx
, coord
);
4470 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
4472 LLVMValueRef result
= NULL
;
4473 struct ac_image_args args
= { 0 };
4474 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
4475 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
4476 unsigned offset_src
= 0;
4477 struct waterfall_context wctx
[2] = {{{0}}};
4479 tex_fetch_ptrs(ctx
, instr
, wctx
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
4481 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
4482 switch (instr
->src
[i
].src_type
) {
4483 case nir_tex_src_coord
: {
4484 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
4485 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
4486 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
4489 case nir_tex_src_projector
:
4491 case nir_tex_src_comparator
:
4492 if (instr
->is_shadow
) {
4493 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
4494 args
.compare
= ac_to_float(&ctx
->ac
, args
.compare
);
4497 case nir_tex_src_offset
:
4498 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
4501 case nir_tex_src_bias
:
4502 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
4504 case nir_tex_src_lod
: {
4505 if (nir_src_is_const(instr
->src
[i
].src
) && nir_src_as_uint(instr
->src
[i
].src
) == 0)
4506 args
.level_zero
= true;
4508 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
4511 case nir_tex_src_ms_index
:
4512 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
4514 case nir_tex_src_ms_mcs
:
4516 case nir_tex_src_ddx
:
4517 ddx
= get_src(ctx
, instr
->src
[i
].src
);
4519 case nir_tex_src_ddy
:
4520 ddy
= get_src(ctx
, instr
->src
[i
].src
);
4522 case nir_tex_src_min_lod
:
4523 args
.min_lod
= get_src(ctx
, instr
->src
[i
].src
);
4525 case nir_tex_src_texture_offset
:
4526 case nir_tex_src_sampler_offset
:
4527 case nir_tex_src_plane
:
4533 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
4534 result
= get_buffer_size(ctx
, args
.resource
, true);
4538 if (instr
->op
== nir_texop_texture_samples
) {
4539 LLVMValueRef res
, samples
, is_msaa
;
4540 LLVMValueRef default_sample
;
4542 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
4543 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
4544 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4545 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4546 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
4547 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
4548 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4549 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
4550 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4552 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4553 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
4554 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
4555 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
4556 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
4559 if (ctx
->abi
->robust_buffer_access
) {
4560 LLVMValueRef dword1
, is_null_descriptor
;
4562 /* Extract the second dword of the descriptor, if it's
4563 * all zero, then it's a null descriptor.
4565 dword1
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
4566 LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
4567 is_null_descriptor
=
4568 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, dword1
,
4569 LLVMConstInt(ctx
->ac
.i32
, 0, false), "");
4571 LLVMBuildSelect(ctx
->ac
.builder
, is_null_descriptor
,
4572 ctx
->ac
.i32_0
, ctx
->ac
.i32_1
, "");
4574 default_sample
= ctx
->ac
.i32_1
;
4577 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
4578 default_sample
, "");
4583 if (args
.offset
&& instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
4584 LLVMValueRef offset
[3], pack
;
4585 for (unsigned chan
= 0; chan
< 3; ++chan
)
4586 offset
[chan
] = ctx
->ac
.i32_0
;
4588 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
4589 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
4590 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
4591 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
4592 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
4594 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
4595 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
4597 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
4598 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
4602 /* Section 8.23.1 (Depth Texture Comparison Mode) of the
4603 * OpenGL 4.5 spec says:
4605 * "If the texture’s internal format indicates a fixed-point
4606 * depth texture, then D_t and D_ref are clamped to the
4607 * range [0, 1]; otherwise no clamping is performed."
4609 * TC-compatible HTILE promotes Z16 and Z24 to Z32_FLOAT,
4610 * so the depth comparison value isn't clamped for Z16 and
4611 * Z24 anymore. Do it manually here for GFX8-9; GFX10 has
4612 * an explicitly clamped 32-bit float format.
4615 ctx
->ac
.chip_class
>= GFX8
&&
4616 ctx
->ac
.chip_class
<= GFX9
&&
4617 ctx
->abi
->clamp_shadow_reference
) {
4618 LLVMValueRef upgraded
, clamped
;
4620 upgraded
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
.sampler
,
4621 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4622 upgraded
= LLVMBuildLShr(ctx
->ac
.builder
, upgraded
,
4623 LLVMConstInt(ctx
->ac
.i32
, 29, false), "");
4624 upgraded
= LLVMBuildTrunc(ctx
->ac
.builder
, upgraded
, ctx
->ac
.i1
, "");
4625 clamped
= ac_build_clamp(&ctx
->ac
, args
.compare
);
4626 args
.compare
= LLVMBuildSelect(ctx
->ac
.builder
, upgraded
, clamped
,
4630 /* pack derivatives */
4632 int num_src_deriv_channels
, num_dest_deriv_channels
;
4633 switch (instr
->sampler_dim
) {
4634 case GLSL_SAMPLER_DIM_3D
:
4635 case GLSL_SAMPLER_DIM_CUBE
:
4636 num_src_deriv_channels
= 3;
4637 num_dest_deriv_channels
= 3;
4639 case GLSL_SAMPLER_DIM_2D
:
4641 num_src_deriv_channels
= 2;
4642 num_dest_deriv_channels
= 2;
4644 case GLSL_SAMPLER_DIM_1D
:
4645 num_src_deriv_channels
= 1;
4646 if (ctx
->ac
.chip_class
== GFX9
) {
4647 num_dest_deriv_channels
= 2;
4649 num_dest_deriv_channels
= 1;
4654 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
4655 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
4656 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
4657 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
4658 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
4660 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
4661 args
.derivs
[i
] = ctx
->ac
.f32_0
;
4662 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
4666 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
4667 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
4668 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
4669 if (instr
->coord_components
== 3)
4670 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
4671 ac_prepare_cube_coords(&ctx
->ac
,
4672 instr
->op
== nir_texop_txd
, instr
->is_array
,
4673 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
4676 /* Texture coordinates fixups */
4677 if (instr
->coord_components
> 1 &&
4678 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4680 instr
->op
!= nir_texop_txf
) {
4681 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
4684 if (instr
->coord_components
> 2 &&
4685 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
4686 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
4687 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
4688 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
4690 instr
->op
!= nir_texop_txf
&&
4691 instr
->op
!= nir_texop_txf_ms
&&
4692 instr
->op
!= nir_texop_fragment_fetch
&&
4693 instr
->op
!= nir_texop_fragment_mask_fetch
) {
4694 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
4697 if (ctx
->ac
.chip_class
== GFX9
&&
4698 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4699 instr
->op
!= nir_texop_lod
) {
4700 LLVMValueRef filler
;
4701 if (instr
->op
== nir_texop_txf
)
4702 filler
= ctx
->ac
.i32_0
;
4704 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
4706 if (instr
->is_array
)
4707 args
.coords
[2] = args
.coords
[1];
4708 args
.coords
[1] = filler
;
4711 /* Pack sample index */
4712 if (sample_index
&& (instr
->op
== nir_texop_txf_ms
||
4713 instr
->op
== nir_texop_fragment_fetch
))
4714 args
.coords
[instr
->coord_components
] = sample_index
;
4716 if (instr
->op
== nir_texop_samples_identical
) {
4717 struct ac_image_args txf_args
= { 0 };
4718 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
4720 txf_args
.dmask
= 0xf;
4721 txf_args
.resource
= fmask_ptr
;
4722 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
4723 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
4725 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4726 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
4730 if ((instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
||
4731 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
) &&
4732 instr
->op
!= nir_texop_txs
&&
4733 instr
->op
!= nir_texop_fragment_fetch
&&
4734 instr
->op
!= nir_texop_fragment_mask_fetch
) {
4735 unsigned sample_chan
= instr
->is_array
? 3 : 2;
4736 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
4737 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
4738 instr
->is_array
? args
.coords
[2] : NULL
,
4739 args
.coords
[sample_chan
], fmask_ptr
);
4742 if (args
.offset
&& (instr
->op
== nir_texop_txf
|| instr
->op
== nir_texop_txf_ms
)) {
4743 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
4744 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
4745 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
4746 args
.coords
[i
] = LLVMBuildAdd(
4747 ctx
->ac
.builder
, args
.coords
[i
],
4748 LLVMConstInt(ctx
->ac
.i32
, nir_src_comp_as_uint(instr
->src
[offset_src
].src
, i
), false), "");
4753 /* DMASK was repurposed for GATHER4. 4 components are always
4754 * returned and DMASK works like a swizzle - it selects
4755 * the component to fetch. The only valid DMASK values are
4756 * 1=red, 2=green, 4=blue, 8=alpha. (e.g. 1 returns
4757 * (red,red,red,red) etc.) The ISA document doesn't mention
4761 if (instr
->op
== nir_texop_tg4
) {
4762 if (instr
->is_shadow
)
4765 args
.dmask
= 1 << instr
->component
;
4768 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
) {
4769 args
.dim
= ac_get_sampler_dim(ctx
->ac
.chip_class
, instr
->sampler_dim
, instr
->is_array
);
4770 args
.unorm
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
;
4773 /* Adjust the number of coordinates because we only need (x,y) for 2D
4774 * multisampled images and (x,y,layer) for 2D multisampled layered
4775 * images or for multisampled input attachments.
4777 if (instr
->op
== nir_texop_fragment_mask_fetch
) {
4778 if (args
.dim
== ac_image_2dmsaa
) {
4779 args
.dim
= ac_image_2d
;
4781 assert(args
.dim
== ac_image_2darraymsaa
);
4782 args
.dim
= ac_image_2darray
;
4786 assert(instr
->dest
.is_ssa
);
4787 args
.d16
= instr
->dest
.ssa
.bit_size
== 16;
4789 result
= build_tex_intrinsic(ctx
, instr
, &args
);
4791 if (instr
->op
== nir_texop_query_levels
)
4792 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4793 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
4794 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
4795 instr
->op
!= nir_texop_tg4
)
4796 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4797 else if (instr
->op
== nir_texop_txs
&&
4798 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
4800 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4801 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
4802 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4803 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
4804 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
4805 } else if (ctx
->ac
.chip_class
== GFX9
&&
4806 instr
->op
== nir_texop_txs
&&
4807 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4809 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4810 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4811 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
4813 } else if (instr
->dest
.ssa
.num_components
!= 4)
4814 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
4818 assert(instr
->dest
.is_ssa
);
4819 result
= ac_to_integer(&ctx
->ac
, result
);
4821 for (int i
= ARRAY_SIZE(wctx
); --i
>= 0;) {
4822 result
= exit_waterfall(ctx
, wctx
+ i
, result
);
4825 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4829 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
4831 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
4832 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
4834 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4835 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
4838 static void visit_post_phi(struct ac_nir_context
*ctx
,
4839 nir_phi_instr
*instr
,
4840 LLVMValueRef llvm_phi
)
4842 nir_foreach_phi_src(src
, instr
) {
4843 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
4844 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
4846 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
4850 static void phi_post_pass(struct ac_nir_context
*ctx
)
4852 hash_table_foreach(ctx
->phis
, entry
) {
4853 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
4854 (LLVMValueRef
)entry
->data
);
4859 static bool is_def_used_in_an_export(const nir_ssa_def
* def
) {
4860 nir_foreach_use(use_src
, def
) {
4861 if (use_src
->parent_instr
->type
== nir_instr_type_intrinsic
) {
4862 nir_intrinsic_instr
*instr
= nir_instr_as_intrinsic(use_src
->parent_instr
);
4863 if (instr
->intrinsic
== nir_intrinsic_store_deref
)
4865 } else if (use_src
->parent_instr
->type
== nir_instr_type_alu
) {
4866 nir_alu_instr
*instr
= nir_instr_as_alu(use_src
->parent_instr
);
4867 if (instr
->op
== nir_op_vec4
&&
4868 is_def_used_in_an_export(&instr
->dest
.dest
.ssa
)) {
4876 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
4877 const nir_ssa_undef_instr
*instr
)
4879 unsigned num_components
= instr
->def
.num_components
;
4880 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
4882 if (!ctx
->abi
->convert_undef_to_zero
|| is_def_used_in_an_export(&instr
->def
)) {
4885 if (num_components
== 1)
4886 undef
= LLVMGetUndef(type
);
4888 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
4890 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
4892 LLVMValueRef zero
= LLVMConstInt(type
, 0, false);
4893 if (num_components
> 1) {
4894 zero
= ac_build_gather_values_extended(
4895 &ctx
->ac
, &zero
, 4, 0, false, false);
4897 ctx
->ssa_defs
[instr
->def
.index
] = zero
;
4901 static void visit_jump(struct ac_llvm_context
*ctx
,
4902 const nir_jump_instr
*instr
)
4904 switch (instr
->type
) {
4905 case nir_jump_break
:
4906 ac_build_break(ctx
);
4908 case nir_jump_continue
:
4909 ac_build_continue(ctx
);
4912 fprintf(stderr
, "Unknown NIR jump instr: ");
4913 nir_print_instr(&instr
->instr
, stderr
);
4914 fprintf(stderr
, "\n");
4920 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
4921 enum glsl_base_type type
)
4925 case GLSL_TYPE_UINT
:
4926 case GLSL_TYPE_BOOL
:
4927 case GLSL_TYPE_SUBROUTINE
:
4929 case GLSL_TYPE_INT8
:
4930 case GLSL_TYPE_UINT8
:
4932 case GLSL_TYPE_INT16
:
4933 case GLSL_TYPE_UINT16
:
4935 case GLSL_TYPE_FLOAT
:
4937 case GLSL_TYPE_FLOAT16
:
4939 case GLSL_TYPE_INT64
:
4940 case GLSL_TYPE_UINT64
:
4942 case GLSL_TYPE_DOUBLE
:
4945 unreachable("unknown GLSL type");
4950 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
4951 const struct glsl_type
*type
)
4953 if (glsl_type_is_scalar(type
)) {
4954 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
4957 if (glsl_type_is_vector(type
)) {
4958 return LLVMVectorType(
4959 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
4960 glsl_get_vector_elements(type
));
4963 if (glsl_type_is_matrix(type
)) {
4964 return LLVMArrayType(
4965 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
4966 glsl_get_matrix_columns(type
));
4969 if (glsl_type_is_array(type
)) {
4970 return LLVMArrayType(
4971 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
4972 glsl_get_length(type
));
4975 assert(glsl_type_is_struct_or_ifc(type
));
4977 LLVMTypeRef member_types
[glsl_get_length(type
)];
4979 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
4981 glsl_to_llvm_type(ac
,
4982 glsl_get_struct_field(type
, i
));
4985 return LLVMStructTypeInContext(ac
->context
, member_types
,
4986 glsl_get_length(type
), false);
4989 static void visit_deref(struct ac_nir_context
*ctx
,
4990 nir_deref_instr
*instr
)
4992 if (instr
->mode
!= nir_var_mem_shared
&&
4993 instr
->mode
!= nir_var_mem_global
)
4996 LLVMValueRef result
= NULL
;
4997 switch(instr
->deref_type
) {
4998 case nir_deref_type_var
: {
4999 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
5000 result
= entry
->data
;
5003 case nir_deref_type_struct
:
5004 if (instr
->mode
== nir_var_mem_global
) {
5005 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
5006 uint64_t offset
= glsl_get_struct_field_offset(parent
->type
,
5007 instr
->strct
.index
);
5008 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
5009 LLVMConstInt(ctx
->ac
.i32
, offset
, 0));
5011 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
5012 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
5015 case nir_deref_type_array
:
5016 if (instr
->mode
== nir_var_mem_global
) {
5017 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
5018 unsigned stride
= glsl_get_explicit_stride(parent
->type
);
5020 if ((glsl_type_is_matrix(parent
->type
) &&
5021 glsl_matrix_type_is_row_major(parent
->type
)) ||
5022 (glsl_type_is_vector(parent
->type
) && stride
== 0))
5023 stride
= type_scalar_size_bytes(parent
->type
);
5026 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
5027 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
5028 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
5030 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
5032 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
5034 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
5035 get_src(ctx
, instr
->arr
.index
));
5038 case nir_deref_type_ptr_as_array
:
5039 if (instr
->mode
== nir_var_mem_global
) {
5040 unsigned stride
= nir_deref_instr_ptr_as_array_stride(instr
);
5042 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
5043 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
5044 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
5046 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
5048 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
5050 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
5051 get_src(ctx
, instr
->arr
.index
));
5054 case nir_deref_type_cast
: {
5055 result
= get_src(ctx
, instr
->parent
);
5057 /* We can't use the structs from LLVM because the shader
5058 * specifies its own offsets. */
5059 LLVMTypeRef pointee_type
= ctx
->ac
.i8
;
5060 if (instr
->mode
== nir_var_mem_shared
)
5061 pointee_type
= glsl_to_llvm_type(&ctx
->ac
, instr
->type
);
5063 unsigned address_space
;
5065 switch(instr
->mode
) {
5066 case nir_var_mem_shared
:
5067 address_space
= AC_ADDR_SPACE_LDS
;
5069 case nir_var_mem_global
:
5070 address_space
= AC_ADDR_SPACE_GLOBAL
;
5073 unreachable("Unhandled address space");
5076 LLVMTypeRef type
= LLVMPointerType(pointee_type
, address_space
);
5078 if (LLVMTypeOf(result
) != type
) {
5079 if (LLVMGetTypeKind(LLVMTypeOf(result
)) == LLVMVectorTypeKind
) {
5080 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
,
5083 result
= LLVMBuildIntToPtr(ctx
->ac
.builder
, result
,
5090 unreachable("Unhandled deref_instr deref type");
5093 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
5096 static void visit_cf_list(struct ac_nir_context
*ctx
,
5097 struct exec_list
*list
);
5099 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
5101 nir_foreach_instr(instr
, block
)
5103 switch (instr
->type
) {
5104 case nir_instr_type_alu
:
5105 visit_alu(ctx
, nir_instr_as_alu(instr
));
5107 case nir_instr_type_load_const
:
5108 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
5110 case nir_instr_type_intrinsic
:
5111 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
5113 case nir_instr_type_tex
:
5114 visit_tex(ctx
, nir_instr_as_tex(instr
));
5116 case nir_instr_type_phi
:
5117 visit_phi(ctx
, nir_instr_as_phi(instr
));
5119 case nir_instr_type_ssa_undef
:
5120 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
5122 case nir_instr_type_jump
:
5123 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
5125 case nir_instr_type_deref
:
5126 visit_deref(ctx
, nir_instr_as_deref(instr
));
5129 fprintf(stderr
, "Unknown NIR instr type: ");
5130 nir_print_instr(instr
, stderr
);
5131 fprintf(stderr
, "\n");
5136 _mesa_hash_table_insert(ctx
->defs
, block
,
5137 LLVMGetInsertBlock(ctx
->ac
.builder
));
5140 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
5142 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
5144 nir_block
*then_block
=
5145 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
5147 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
5149 visit_cf_list(ctx
, &if_stmt
->then_list
);
5151 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
5152 nir_block
*else_block
=
5153 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
5155 ac_build_else(&ctx
->ac
, else_block
->index
);
5156 visit_cf_list(ctx
, &if_stmt
->else_list
);
5159 ac_build_endif(&ctx
->ac
, then_block
->index
);
5162 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
5164 nir_block
*first_loop_block
=
5165 (nir_block
*) exec_list_get_head(&loop
->body
);
5167 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
5169 visit_cf_list(ctx
, &loop
->body
);
5171 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
5174 static void visit_cf_list(struct ac_nir_context
*ctx
,
5175 struct exec_list
*list
)
5177 foreach_list_typed(nir_cf_node
, node
, node
, list
)
5179 switch (node
->type
) {
5180 case nir_cf_node_block
:
5181 visit_block(ctx
, nir_cf_node_as_block(node
));
5184 case nir_cf_node_if
:
5185 visit_if(ctx
, nir_cf_node_as_if(node
));
5188 case nir_cf_node_loop
:
5189 visit_loop(ctx
, nir_cf_node_as_loop(node
));
5199 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
5200 struct ac_shader_abi
*abi
,
5201 struct nir_shader
*nir
,
5202 struct nir_variable
*variable
,
5203 gl_shader_stage stage
)
5205 unsigned output_loc
= variable
->data
.driver_location
/ 4;
5206 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
5208 /* tess ctrl has it's own load/store paths for outputs */
5209 if (stage
== MESA_SHADER_TESS_CTRL
)
5212 if (stage
== MESA_SHADER_VERTEX
||
5213 stage
== MESA_SHADER_TESS_EVAL
||
5214 stage
== MESA_SHADER_GEOMETRY
) {
5215 int idx
= variable
->data
.location
+ variable
->data
.index
;
5216 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
5217 int length
= nir
->info
.clip_distance_array_size
+
5218 nir
->info
.cull_distance_array_size
;
5227 bool is_16bit
= glsl_type_is_16bit(glsl_without_array(variable
->type
));
5228 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
5229 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
5230 for (unsigned chan
= 0; chan
< 4; chan
++) {
5231 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
5232 ac_build_alloca_undef(ctx
, type
, "");
5238 setup_locals(struct ac_nir_context
*ctx
,
5239 struct nir_function
*func
)
5242 ctx
->num_locals
= 0;
5243 nir_foreach_variable(variable
, &func
->impl
->locals
) {
5244 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
5245 variable
->data
.driver_location
= ctx
->num_locals
* 4;
5246 variable
->data
.location_frac
= 0;
5247 ctx
->num_locals
+= attrib_count
;
5249 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
5253 for (i
= 0; i
< ctx
->num_locals
; i
++) {
5254 for (j
= 0; j
< 4; j
++) {
5255 ctx
->locals
[i
* 4 + j
] =
5256 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
5262 setup_scratch(struct ac_nir_context
*ctx
,
5263 struct nir_shader
*shader
)
5265 if (shader
->scratch_size
== 0)
5268 ctx
->scratch
= ac_build_alloca_undef(&ctx
->ac
,
5269 LLVMArrayType(ctx
->ac
.i8
, shader
->scratch_size
),
5274 setup_constant_data(struct ac_nir_context
*ctx
,
5275 struct nir_shader
*shader
)
5277 if (!shader
->constant_data
)
5281 LLVMConstStringInContext(ctx
->ac
.context
,
5282 shader
->constant_data
,
5283 shader
->constant_data_size
,
5285 LLVMTypeRef type
= LLVMArrayType(ctx
->ac
.i8
, shader
->constant_data_size
);
5287 /* We want to put the constant data in the CONST address space so that
5288 * we can use scalar loads. However, LLVM versions before 10 put these
5289 * variables in the same section as the code, which is unacceptable
5290 * for RadeonSI as it needs to relocate all the data sections after
5291 * the code sections. See https://reviews.llvm.org/D65813.
5293 unsigned address_space
=
5294 LLVM_VERSION_MAJOR
< 10 ? AC_ADDR_SPACE_GLOBAL
: AC_ADDR_SPACE_CONST
;
5296 LLVMValueRef global
=
5297 LLVMAddGlobalInAddressSpace(ctx
->ac
.module
, type
,
5301 LLVMSetInitializer(global
, data
);
5302 LLVMSetGlobalConstant(global
, true);
5303 LLVMSetVisibility(global
, LLVMHiddenVisibility
);
5304 ctx
->constant_data
= global
;
5308 setup_shared(struct ac_nir_context
*ctx
,
5309 struct nir_shader
*nir
)
5314 LLVMTypeRef type
= LLVMArrayType(ctx
->ac
.i8
,
5315 nir
->info
.cs
.shared_size
);
5318 LLVMAddGlobalInAddressSpace(ctx
->ac
.module
, type
,
5321 LLVMSetAlignment(lds
, 64 * 1024);
5323 ctx
->ac
.lds
= LLVMBuildBitCast(ctx
->ac
.builder
, lds
,
5324 LLVMPointerType(ctx
->ac
.i8
,
5325 AC_ADDR_SPACE_LDS
), "");
5328 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
5329 const struct ac_shader_args
*args
, struct nir_shader
*nir
)
5331 struct ac_nir_context ctx
= {};
5332 struct nir_function
*func
;
5338 ctx
.stage
= nir
->info
.stage
;
5339 ctx
.info
= &nir
->info
;
5341 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
5343 nir_foreach_variable(variable
, &nir
->outputs
)
5344 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
5347 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5348 _mesa_key_pointer_equal
);
5349 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5350 _mesa_key_pointer_equal
);
5351 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5352 _mesa_key_pointer_equal
);
5354 if (ctx
.abi
->kill_ps_if_inf_interp
)
5355 ctx
.verified_interp
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5356 _mesa_key_pointer_equal
);
5358 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
5360 nir_index_ssa_defs(func
->impl
);
5361 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
5363 setup_locals(&ctx
, func
);
5364 setup_scratch(&ctx
, nir
);
5365 setup_constant_data(&ctx
, nir
);
5367 if (gl_shader_stage_is_compute(nir
->info
.stage
))
5368 setup_shared(&ctx
, nir
);
5370 if (nir
->info
.stage
== MESA_SHADER_FRAGMENT
&& nir
->info
.fs
.uses_demote
) {
5371 ctx
.ac
.postponed_kill
= ac_build_alloca_undef(&ctx
.ac
, ac
->i1
, "");
5372 /* true = don't kill. */
5373 LLVMBuildStore(ctx
.ac
.builder
, ctx
.ac
.i1true
, ctx
.ac
.postponed_kill
);
5376 visit_cf_list(&ctx
, &func
->impl
->body
);
5377 phi_post_pass(&ctx
);
5379 if (ctx
.ac
.postponed_kill
)
5380 ac_build_kill_if_false(&ctx
.ac
, LLVMBuildLoad(ctx
.ac
.builder
,
5381 ctx
.ac
.postponed_kill
, ""));
5383 if (!gl_shader_stage_is_compute(nir
->info
.stage
))
5384 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
5389 ralloc_free(ctx
.defs
);
5390 ralloc_free(ctx
.phis
);
5391 ralloc_free(ctx
.vars
);
5392 if (ctx
.abi
->kill_ps_if_inf_interp
)
5393 ralloc_free(ctx
.verified_interp
);
5397 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
5399 bool progress
= false;
5401 /* Lower large variables to scratch first so that we won't bloat the
5402 * shader by generating large if ladders for them. We later lower
5403 * scratch to alloca's, assuming LLVM won't generate VGPR indexing.
5405 NIR_PASS(progress
, nir
, nir_lower_vars_to_scratch
,
5406 nir_var_function_temp
,
5408 glsl_get_natural_size_align_bytes
);
5410 /* While it would be nice not to have this flag, we are constrained
5411 * by the reality that LLVM 9.0 has buggy VGPR indexing on GFX9.
5413 bool llvm_has_working_vgpr_indexing
= chip_class
!= GFX9
;
5415 /* TODO: Indirect indexing of GS inputs is unimplemented.
5417 * TCS and TES load inputs directly from LDS or offchip memory, so
5418 * indirect indexing is trivial.
5420 nir_variable_mode indirect_mask
= 0;
5421 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
5422 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
5423 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
5424 !llvm_has_working_vgpr_indexing
)) {
5425 indirect_mask
|= nir_var_shader_in
;
5427 if (!llvm_has_working_vgpr_indexing
&&
5428 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
5429 indirect_mask
|= nir_var_shader_out
;
5431 /* TODO: We shouldn't need to do this, however LLVM isn't currently
5432 * smart enough to handle indirects without causing excess spilling
5433 * causing the gpu to hang.
5435 * See the following thread for more details of the problem:
5436 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
5438 indirect_mask
|= nir_var_function_temp
;
5440 progress
|= nir_lower_indirect_derefs(nir
, indirect_mask
);
5445 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
5447 if (intrin
->intrinsic
!= nir_intrinsic_store_deref
)
5451 nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[0]));
5453 if (var
->data
.mode
!= nir_var_shader_out
)
5456 unsigned writemask
= 0;
5457 const int location
= var
->data
.location
;
5458 unsigned first_component
= var
->data
.location_frac
;
5459 unsigned num_comps
= intrin
->dest
.ssa
.num_components
;
5461 if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
5462 writemask
= ((1 << (num_comps
+ 1)) - 1) << first_component
;
5463 else if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
5464 writemask
= (((1 << (num_comps
+ 1)) - 1) << first_component
) << 4;
5470 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
5471 unsigned *cond_block_tf_writemask
,
5472 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
5474 switch (cf_node
->type
) {
5475 case nir_cf_node_block
: {
5476 nir_block
*block
= nir_cf_node_as_block(cf_node
);
5477 nir_foreach_instr(instr
, block
) {
5478 if (instr
->type
!= nir_instr_type_intrinsic
)
5481 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
5482 if (intrin
->intrinsic
== nir_intrinsic_control_barrier
) {
5484 /* If we find a barrier in nested control flow put this in the
5485 * too hard basket. In GLSL this is not possible but it is in
5489 *tessfactors_are_def_in_all_invocs
= false;
5493 /* The following case must be prevented:
5494 * gl_TessLevelInner = ...;
5496 * if (gl_InvocationID == 1)
5497 * gl_TessLevelInner = ...;
5499 * If you consider disjoint code segments separated by barriers, each
5500 * such segment that writes tess factor channels should write the same
5501 * channels in all codepaths within that segment.
5503 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
5504 /* Accumulate the result: */
5505 *tessfactors_are_def_in_all_invocs
&=
5506 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
5508 /* Analyze the next code segment from scratch. */
5509 *upper_block_tf_writemask
= 0;
5510 *cond_block_tf_writemask
= 0;
5513 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
5518 case nir_cf_node_if
: {
5519 unsigned then_tessfactor_writemask
= 0;
5520 unsigned else_tessfactor_writemask
= 0;
5522 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
5523 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
5524 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
5525 cond_block_tf_writemask
,
5526 tessfactors_are_def_in_all_invocs
, true);
5529 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
5530 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
5531 cond_block_tf_writemask
,
5532 tessfactors_are_def_in_all_invocs
, true);
5535 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
5536 /* If both statements write the same tess factor channels,
5537 * we can say that the upper block writes them too.
5539 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
5540 else_tessfactor_writemask
;
5541 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
5542 else_tessfactor_writemask
;
5547 case nir_cf_node_loop
: {
5548 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
5549 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
5550 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
5551 cond_block_tf_writemask
,
5552 tessfactors_are_def_in_all_invocs
, true);
5558 unreachable("unknown cf node type");
5563 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
5565 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
5567 /* The pass works as follows:
5568 * If all codepaths write tess factors, we can say that all
5569 * invocations define tess factors.
5571 * Each tess factor channel is tracked separately.
5573 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
5574 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
5576 /* Initial value = true. Here the pass will accumulate results from
5577 * multiple segments surrounded by barriers. If tess factors aren't
5578 * written at all, it's a shader bug and we don't care if this will be
5581 bool tessfactors_are_def_in_all_invocs
= true;
5583 nir_foreach_function(function
, nir
) {
5584 if (function
->impl
) {
5585 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
5586 scan_tess_ctrl(node
, &main_block_tf_writemask
,
5587 &cond_block_tf_writemask
,
5588 &tessfactors_are_def_in_all_invocs
,
5594 /* Accumulate the result for the last code segment separated by a
5597 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
5598 tessfactors_are_def_in_all_invocs
&=
5599 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
5602 return tessfactors_are_def_in_all_invocs
;