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
);
605 assert(nir_op_infos
[instr
->op
].num_inputs
<= ARRAY_SIZE(src
));
612 case nir_op_pack_half_2x16
:
613 case nir_op_pack_snorm_2x16
:
614 case nir_op_pack_unorm_2x16
:
617 case nir_op_unpack_half_2x16
:
620 case nir_op_cube_face_coord
:
621 case nir_op_cube_face_index
:
625 src_components
= num_components
;
628 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
629 src
[i
] = get_alu_src(ctx
, instr
->src
[i
], src_components
);
636 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
637 result
= LLVMBuildFNeg(ctx
->ac
.builder
, src
[0], "");
638 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO
) {
639 /* fneg will be optimized by backend compiler with sign
640 * bit removed via XOR. This is probably a LLVM bug.
642 result
= ac_build_canonicalize(&ctx
->ac
, result
,
643 instr
->dest
.dest
.ssa
.bit_size
);
647 result
= LLVMBuildNeg(ctx
->ac
.builder
, src
[0], "");
650 result
= LLVMBuildNot(ctx
->ac
.builder
, src
[0], "");
653 result
= LLVMBuildAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
656 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
657 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
658 result
= LLVMBuildFAdd(ctx
->ac
.builder
, src
[0], src
[1], "");
661 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
662 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
663 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], src
[1], "");
666 result
= LLVMBuildSub(ctx
->ac
.builder
, src
[0], src
[1], "");
669 result
= LLVMBuildMul(ctx
->ac
.builder
, src
[0], src
[1], "");
672 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
675 result
= LLVMBuildURem(ctx
->ac
.builder
, src
[0], src
[1], "");
678 /* lower_fmod only lower 16-bit and 32-bit fmod */
679 assert(instr
->dest
.dest
.ssa
.bit_size
== 64);
680 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
681 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
682 result
= ac_build_fdiv(&ctx
->ac
, src
[0], src
[1]);
683 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
684 ac_to_float_type(&ctx
->ac
, def_type
), result
);
685 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[1] , result
, "");
686 result
= LLVMBuildFSub(ctx
->ac
.builder
, src
[0], result
, "");
689 result
= LLVMBuildSRem(ctx
->ac
.builder
, src
[0], src
[1], "");
692 result
= LLVMBuildSDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
695 result
= LLVMBuildUDiv(ctx
->ac
.builder
, src
[0], src
[1], "");
698 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
699 src
[1] = ac_to_float(&ctx
->ac
, src
[1]);
700 result
= LLVMBuildFMul(ctx
->ac
.builder
, src
[0], src
[1], "");
703 /* For doubles, we need precise division to pass GLCTS. */
704 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DEFAULT_OPENGL
&&
705 ac_get_type_size(def_type
) == 8) {
706 result
= LLVMBuildFDiv(ctx
->ac
.builder
, ctx
->ac
.f64_1
,
707 ac_to_float(&ctx
->ac
, src
[0]), "");
709 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.amdgcn.rcp",
710 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
712 if (ctx
->abi
->clamp_div_by_zero
)
713 result
= ac_build_fmin(&ctx
->ac
, result
,
714 LLVMConstReal(ac_to_float_type(&ctx
->ac
, def_type
), FLT_MAX
));
717 result
= LLVMBuildAnd(ctx
->ac
.builder
, src
[0], src
[1], "");
720 result
= LLVMBuildOr(ctx
->ac
.builder
, src
[0], src
[1], "");
723 result
= LLVMBuildXor(ctx
->ac
.builder
, src
[0], src
[1], "");
726 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
727 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
728 LLVMTypeOf(src
[0]), "");
729 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
730 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
731 LLVMTypeOf(src
[0]), "");
732 result
= LLVMBuildShl(ctx
->ac
.builder
, src
[0], src
[1], "");
735 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
736 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
737 LLVMTypeOf(src
[0]), "");
738 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
739 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
740 LLVMTypeOf(src
[0]), "");
741 result
= LLVMBuildAShr(ctx
->ac
.builder
, src
[0], src
[1], "");
744 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) < ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
745 src
[1] = LLVMBuildZExt(ctx
->ac
.builder
, src
[1],
746 LLVMTypeOf(src
[0]), "");
747 else if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[1])) > ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])))
748 src
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, src
[1],
749 LLVMTypeOf(src
[0]), "");
750 result
= LLVMBuildLShr(ctx
->ac
.builder
, src
[0], src
[1], "");
753 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSLT
, src
[0], src
[1]);
756 result
= emit_int_cmp(&ctx
->ac
, LLVMIntNE
, src
[0], src
[1]);
759 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, src
[0], src
[1]);
762 result
= emit_int_cmp(&ctx
->ac
, LLVMIntSGE
, src
[0], src
[1]);
765 result
= emit_int_cmp(&ctx
->ac
, LLVMIntULT
, src
[0], src
[1]);
768 result
= emit_int_cmp(&ctx
->ac
, LLVMIntUGE
, src
[0], src
[1]);
771 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOEQ
, src
[0], src
[1]);
774 result
= emit_float_cmp(&ctx
->ac
, LLVMRealUNE
, src
[0], src
[1]);
777 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOLT
, src
[0], src
[1]);
780 result
= emit_float_cmp(&ctx
->ac
, LLVMRealOGE
, src
[0], src
[1]);
783 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.fabs",
784 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
785 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO
) {
786 /* fabs will be optimized by backend compiler with sign
787 * bit removed via AND.
789 result
= ac_build_canonicalize(&ctx
->ac
, result
,
790 instr
->dest
.dest
.ssa
.bit_size
);
794 result
= emit_iabs(&ctx
->ac
, src
[0]);
797 result
= ac_build_imax(&ctx
->ac
, src
[0], src
[1]);
800 result
= ac_build_imin(&ctx
->ac
, src
[0], src
[1]);
803 result
= ac_build_umax(&ctx
->ac
, src
[0], src
[1]);
806 result
= ac_build_umin(&ctx
->ac
, src
[0], src
[1]);
809 result
= ac_build_isign(&ctx
->ac
, src
[0],
810 instr
->dest
.dest
.ssa
.bit_size
);
813 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
814 result
= ac_build_fsign(&ctx
->ac
, src
[0],
815 instr
->dest
.dest
.ssa
.bit_size
);
818 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.floor",
819 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
822 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.trunc",
823 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
826 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.ceil",
827 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
829 case nir_op_fround_even
:
830 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.rint",
831 ac_to_float_type(&ctx
->ac
, def_type
),src
[0]);
834 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
835 result
= ac_build_fract(&ctx
->ac
, src
[0],
836 instr
->dest
.dest
.ssa
.bit_size
);
839 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sin",
840 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
843 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.cos",
844 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
847 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.sqrt",
848 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
851 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.exp2",
852 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
855 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.log2",
856 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
859 result
= emit_intrin_1f_param(&ctx
->ac
, "llvm.amdgcn.rsq",
860 ac_to_float_type(&ctx
->ac
, def_type
), src
[0]);
861 if (ctx
->abi
->clamp_div_by_zero
)
862 result
= ac_build_fmin(&ctx
->ac
, result
,
863 LLVMConstReal(ac_to_float_type(&ctx
->ac
, def_type
), FLT_MAX
));
865 case nir_op_frexp_exp
:
866 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
867 result
= ac_build_frexp_exp(&ctx
->ac
, src
[0],
868 ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])));
869 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) == 16)
870 result
= LLVMBuildSExt(ctx
->ac
.builder
, result
,
873 case nir_op_frexp_sig
:
874 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
875 result
= ac_build_frexp_mant(&ctx
->ac
, src
[0],
876 instr
->dest
.dest
.ssa
.bit_size
);
879 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.pow",
880 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
883 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.maxnum",
884 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
885 if (ctx
->ac
.chip_class
< GFX9
&&
886 instr
->dest
.dest
.ssa
.bit_size
== 32) {
887 /* Only pre-GFX9 chips do not flush denorms. */
888 result
= ac_build_canonicalize(&ctx
->ac
, result
,
889 instr
->dest
.dest
.ssa
.bit_size
);
893 result
= emit_intrin_2f_param(&ctx
->ac
, "llvm.minnum",
894 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1]);
895 if (ctx
->ac
.chip_class
< GFX9
&&
896 instr
->dest
.dest
.ssa
.bit_size
== 32) {
897 /* Only pre-GFX9 chips do not flush denorms. */
898 result
= ac_build_canonicalize(&ctx
->ac
, result
,
899 instr
->dest
.dest
.ssa
.bit_size
);
903 /* FMA is better on GFX10, because it has FMA units instead of MUL-ADD units. */
904 result
= emit_intrin_3f_param(&ctx
->ac
, ctx
->ac
.chip_class
>= GFX10
? "llvm.fma" : "llvm.fmuladd",
905 ac_to_float_type(&ctx
->ac
, def_type
), src
[0], src
[1], src
[2]);
908 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
909 if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 32)
910 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f32", ctx
->ac
.f32
, src
, 2, AC_FUNC_ATTR_READNONE
);
911 else if (ac_get_elem_bits(&ctx
->ac
, def_type
) == 16)
912 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f16", ctx
->ac
.f16
, src
, 2, AC_FUNC_ATTR_READNONE
);
914 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.ldexp.f64", ctx
->ac
.f64
, src
, 2, AC_FUNC_ATTR_READNONE
);
917 result
= emit_bfm(&ctx
->ac
, src
[0], src
[1]);
919 case nir_op_bitfield_select
:
920 result
= emit_bitfield_select(&ctx
->ac
, src
[0], src
[1], src
[2]);
923 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], false);
926 result
= ac_build_bfe(&ctx
->ac
, src
[0], src
[1], src
[2], true);
928 case nir_op_bitfield_reverse
:
929 result
= ac_build_bitfield_reverse(&ctx
->ac
, src
[0]);
931 case nir_op_bit_count
:
932 result
= ac_build_bit_count(&ctx
->ac
, src
[0]);
937 for (unsigned i
= 0; i
< nir_op_infos
[instr
->op
].num_inputs
; i
++)
938 src
[i
] = ac_to_integer(&ctx
->ac
, src
[i
]);
939 result
= ac_build_gather_values(&ctx
->ac
, src
, num_components
);
945 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
946 result
= LLVMBuildFPToSI(ctx
->ac
.builder
, src
[0], def_type
, "");
952 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
953 result
= LLVMBuildFPToUI(ctx
->ac
.builder
, src
[0], def_type
, "");
958 result
= LLVMBuildSIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
963 result
= LLVMBuildUIToFP(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
965 case nir_op_f2f16_rtz
:
968 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
970 /* For OpenGL, we want fast packing with v_cvt_pkrtz_f16, but if we use it,
971 * all f32->f16 conversions have to round towards zero, because both scalar
972 * and vec2 down-conversions have to round equally.
974 if (ctx
->ac
.float_mode
== AC_FLOAT_MODE_DEFAULT_OPENGL
||
975 instr
->op
== nir_op_f2f16_rtz
) {
976 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
978 if (LLVMTypeOf(src
[0]) == ctx
->ac
.f64
)
979 src
[0] = LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ctx
->ac
.f32
, "");
981 /* Fast path conversion. This only works if NIR is vectorized
984 if (LLVMTypeOf(src
[0]) == ctx
->ac
.v2f32
) {
985 LLVMValueRef args
[] = {
986 ac_llvm_extract_elem(&ctx
->ac
, src
[0], 0),
987 ac_llvm_extract_elem(&ctx
->ac
, src
[0], 1),
989 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, args
);
993 assert(ac_get_llvm_num_components(src
[0]) == 1);
994 LLVMValueRef param
[2] = { src
[0], LLVMGetUndef(ctx
->ac
.f32
) };
995 result
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, param
);
996 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
998 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
999 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
1001 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
1004 case nir_op_f2f16_rtne
:
1007 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1008 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
1009 result
= LLVMBuildFPExt(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
1011 result
= LLVMBuildFPTrunc(ctx
->ac
.builder
, src
[0], ac_to_float_type(&ctx
->ac
, def_type
), "");
1018 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
1019 result
= LLVMBuildZExt(ctx
->ac
.builder
, src
[0], def_type
, "");
1021 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
1028 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
[0])) < ac_get_elem_bits(&ctx
->ac
, def_type
))
1029 result
= LLVMBuildSExt(ctx
->ac
.builder
, src
[0], def_type
, "");
1031 result
= LLVMBuildTrunc(ctx
->ac
.builder
, src
[0], def_type
, "");
1033 case nir_op_b32csel
:
1034 result
= emit_bcsel(&ctx
->ac
, src
[0], src
[1], src
[2]);
1036 case nir_op_find_lsb
:
1037 result
= ac_find_lsb(&ctx
->ac
, ctx
->ac
.i32
, src
[0]);
1039 case nir_op_ufind_msb
:
1040 result
= ac_build_umsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
1042 case nir_op_ifind_msb
:
1043 result
= ac_build_imsb(&ctx
->ac
, src
[0], ctx
->ac
.i32
);
1045 case nir_op_uadd_carry
:
1046 result
= emit_uint_carry(&ctx
->ac
, "llvm.uadd.with.overflow.i32", src
[0], src
[1]);
1048 case nir_op_usub_borrow
:
1049 result
= emit_uint_carry(&ctx
->ac
, "llvm.usub.with.overflow.i32", src
[0], src
[1]);
1054 result
= emit_b2f(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
1057 result
= emit_f2b(&ctx
->ac
, src
[0]);
1063 result
= emit_b2i(&ctx
->ac
, src
[0], instr
->dest
.dest
.ssa
.bit_size
);
1066 result
= emit_i2b(&ctx
->ac
, src
[0]);
1068 case nir_op_fquantize2f16
:
1069 result
= emit_f2f16(&ctx
->ac
, src
[0]);
1071 case nir_op_umul_high
:
1072 result
= emit_umul_high(&ctx
->ac
, src
[0], src
[1]);
1074 case nir_op_imul_high
:
1075 result
= emit_imul_high(&ctx
->ac
, src
[0], src
[1]);
1077 case nir_op_pack_half_2x16
:
1078 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pkrtz_f16
);
1080 case nir_op_pack_snorm_2x16
:
1081 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_i16
);
1083 case nir_op_pack_unorm_2x16
:
1084 result
= emit_pack_2x16(&ctx
->ac
, src
[0], ac_build_cvt_pknorm_u16
);
1086 case nir_op_unpack_half_2x16
:
1087 result
= emit_unpack_half_2x16(&ctx
->ac
, src
[0]);
1091 case nir_op_fddx_fine
:
1092 case nir_op_fddy_fine
:
1093 case nir_op_fddx_coarse
:
1094 case nir_op_fddy_coarse
:
1095 result
= emit_ddxy(ctx
, instr
->op
, src
[0]);
1098 case nir_op_unpack_64_2x32_split_x
: {
1099 assert(ac_get_llvm_num_components(src
[0]) == 1);
1100 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1103 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1108 case nir_op_unpack_64_2x32_split_y
: {
1109 assert(ac_get_llvm_num_components(src
[0]) == 1);
1110 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1113 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1118 case nir_op_pack_64_2x32_split
: {
1119 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
1120 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i64
, "");
1124 case nir_op_pack_32_2x16_split
: {
1125 LLVMValueRef tmp
= ac_build_gather_values(&ctx
->ac
, src
, 2);
1126 result
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
1130 case nir_op_unpack_32_2x16_split_x
: {
1131 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1134 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1139 case nir_op_unpack_32_2x16_split_y
: {
1140 LLVMValueRef tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, src
[0],
1143 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
,
1148 case nir_op_cube_face_coord
: {
1149 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1150 LLVMValueRef results
[2];
1152 for (unsigned chan
= 0; chan
< 3; chan
++)
1153 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1154 results
[0] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubesc",
1155 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1156 results
[1] = ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubetc",
1157 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1158 LLVMValueRef ma
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubema",
1159 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1160 results
[0] = ac_build_fdiv(&ctx
->ac
, results
[0], ma
);
1161 results
[1] = ac_build_fdiv(&ctx
->ac
, results
[1], ma
);
1162 LLVMValueRef offset
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
1163 results
[0] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[0], offset
, "");
1164 results
[1] = LLVMBuildFAdd(ctx
->ac
.builder
, results
[1], offset
, "");
1165 result
= ac_build_gather_values(&ctx
->ac
, results
, 2);
1169 case nir_op_cube_face_index
: {
1170 src
[0] = ac_to_float(&ctx
->ac
, src
[0]);
1172 for (unsigned chan
= 0; chan
< 3; chan
++)
1173 in
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src
[0], chan
);
1174 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.cubeid",
1175 ctx
->ac
.f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
1180 fprintf(stderr
, "Unknown NIR alu instr: ");
1181 nir_print_instr(&instr
->instr
, stderr
);
1182 fprintf(stderr
, "\n");
1187 assert(instr
->dest
.dest
.is_ssa
);
1188 result
= ac_to_integer_or_pointer(&ctx
->ac
, result
);
1189 ctx
->ssa_defs
[instr
->dest
.dest
.ssa
.index
] = result
;
1193 static void visit_load_const(struct ac_nir_context
*ctx
,
1194 const nir_load_const_instr
*instr
)
1196 LLVMValueRef values
[4], value
= NULL
;
1197 LLVMTypeRef element_type
=
1198 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
1200 for (unsigned i
= 0; i
< instr
->def
.num_components
; ++i
) {
1201 switch (instr
->def
.bit_size
) {
1203 values
[i
] = LLVMConstInt(element_type
,
1204 instr
->value
[i
].u8
, false);
1207 values
[i
] = LLVMConstInt(element_type
,
1208 instr
->value
[i
].u16
, false);
1211 values
[i
] = LLVMConstInt(element_type
,
1212 instr
->value
[i
].u32
, false);
1215 values
[i
] = LLVMConstInt(element_type
,
1216 instr
->value
[i
].u64
, false);
1220 "unsupported nir load_const bit_size: %d\n",
1221 instr
->def
.bit_size
);
1225 if (instr
->def
.num_components
> 1) {
1226 value
= LLVMConstVector(values
, instr
->def
.num_components
);
1230 ctx
->ssa_defs
[instr
->def
.index
] = value
;
1234 get_buffer_size(struct ac_nir_context
*ctx
, LLVMValueRef descriptor
, bool in_elements
)
1237 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1238 LLVMConstInt(ctx
->ac
.i32
, 2, false), "");
1241 if (ctx
->ac
.chip_class
== GFX8
&& in_elements
) {
1242 /* On GFX8, the descriptor contains the size in bytes,
1243 * but TXQ must return the size in elements.
1244 * The stride is always non-zero for resources using TXQ.
1246 LLVMValueRef stride
=
1247 LLVMBuildExtractElement(ctx
->ac
.builder
, descriptor
,
1249 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
,
1250 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
1251 stride
= LLVMBuildAnd(ctx
->ac
.builder
, stride
,
1252 LLVMConstInt(ctx
->ac
.i32
, 0x3fff, false), "");
1254 size
= LLVMBuildUDiv(ctx
->ac
.builder
, size
, stride
, "");
1259 /* Gather4 should follow the same rules as bilinear filtering, but the hardware
1260 * incorrectly forces nearest filtering if the texture format is integer.
1261 * The only effect it has on Gather4, which always returns 4 texels for
1262 * bilinear filtering, is that the final coordinates are off by 0.5 of
1265 * The workaround is to subtract 0.5 from the unnormalized coordinates,
1266 * or (0.5 / size) from the normalized coordinates.
1268 * However, cube textures with 8_8_8_8 data formats require a different
1269 * workaround of overriding the num format to USCALED/SSCALED. This would lose
1270 * precision in 32-bit data formats, so it needs to be applied dynamically at
1271 * runtime. In this case, return an i1 value that indicates whether the
1272 * descriptor was overridden (and hence a fixup of the sampler result is needed).
1274 static LLVMValueRef
lower_gather4_integer(struct ac_llvm_context
*ctx
,
1276 struct ac_image_args
*args
,
1277 const nir_tex_instr
*instr
)
1279 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1280 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1281 LLVMValueRef wa_8888
= NULL
;
1282 LLVMValueRef half_texel
[2];
1283 LLVMValueRef result
;
1285 assert(stype
== GLSL_TYPE_INT
|| stype
== GLSL_TYPE_UINT
);
1287 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1288 LLVMValueRef formats
;
1289 LLVMValueRef data_format
;
1290 LLVMValueRef wa_formats
;
1292 formats
= LLVMBuildExtractElement(ctx
->builder
, args
->resource
, ctx
->i32_1
, "");
1294 data_format
= LLVMBuildLShr(ctx
->builder
, formats
,
1295 LLVMConstInt(ctx
->i32
, 20, false), "");
1296 data_format
= LLVMBuildAnd(ctx
->builder
, data_format
,
1297 LLVMConstInt(ctx
->i32
, (1u << 6) - 1, false), "");
1298 wa_8888
= LLVMBuildICmp(
1299 ctx
->builder
, LLVMIntEQ
, data_format
,
1300 LLVMConstInt(ctx
->i32
, V_008F14_IMG_DATA_FORMAT_8_8_8_8
, false),
1303 uint32_t wa_num_format
=
1304 stype
== GLSL_TYPE_UINT
?
1305 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_USCALED
) :
1306 S_008F14_NUM_FORMAT(V_008F14_IMG_NUM_FORMAT_SSCALED
);
1307 wa_formats
= LLVMBuildAnd(ctx
->builder
, formats
,
1308 LLVMConstInt(ctx
->i32
, C_008F14_NUM_FORMAT
, false),
1310 wa_formats
= LLVMBuildOr(ctx
->builder
, wa_formats
,
1311 LLVMConstInt(ctx
->i32
, wa_num_format
, false), "");
1313 formats
= LLVMBuildSelect(ctx
->builder
, wa_8888
, wa_formats
, formats
, "");
1314 args
->resource
= LLVMBuildInsertElement(
1315 ctx
->builder
, args
->resource
, formats
, ctx
->i32_1
, "");
1318 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
) {
1320 half_texel
[0] = half_texel
[1] = LLVMConstReal(ctx
->f32
, -0.5);
1322 struct ac_image_args resinfo
= {};
1323 LLVMBasicBlockRef bbs
[2];
1325 LLVMValueRef unnorm
= NULL
;
1326 LLVMValueRef default_offset
= ctx
->f32_0
;
1327 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
&&
1329 /* In vulkan, whether the sampler uses unnormalized
1330 * coordinates or not is a dynamic property of the
1331 * sampler. Hence, to figure out whether or not we
1332 * need to divide by the texture size, we need to test
1333 * the sampler at runtime. This tests the bit set by
1334 * radv_init_sampler().
1336 LLVMValueRef sampler0
=
1337 LLVMBuildExtractElement(ctx
->builder
, args
->sampler
, ctx
->i32_0
, "");
1338 sampler0
= LLVMBuildLShr(ctx
->builder
, sampler0
,
1339 LLVMConstInt(ctx
->i32
, 15, false), "");
1340 sampler0
= LLVMBuildAnd(ctx
->builder
, sampler0
, ctx
->i32_1
, "");
1341 unnorm
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, sampler0
, ctx
->i32_1
, "");
1342 default_offset
= LLVMConstReal(ctx
->f32
, -0.5);
1345 bbs
[0] = LLVMGetInsertBlock(ctx
->builder
);
1346 if (wa_8888
|| unnorm
) {
1347 assert(!(wa_8888
&& unnorm
));
1348 LLVMValueRef not_needed
= wa_8888
? wa_8888
: unnorm
;
1349 /* Skip the texture size query entirely if we don't need it. */
1350 ac_build_ifcc(ctx
, LLVMBuildNot(ctx
->builder
, not_needed
, ""), 2000);
1351 bbs
[1] = LLVMGetInsertBlock(ctx
->builder
);
1354 /* Query the texture size. */
1355 resinfo
.dim
= ac_get_sampler_dim(ctx
->chip_class
, instr
->sampler_dim
, instr
->is_array
);
1356 resinfo
.opcode
= ac_image_get_resinfo
;
1357 resinfo
.dmask
= 0xf;
1358 resinfo
.lod
= ctx
->i32_0
;
1359 resinfo
.resource
= args
->resource
;
1360 resinfo
.attributes
= AC_FUNC_ATTR_READNONE
;
1361 LLVMValueRef size
= ac_build_image_opcode(ctx
, &resinfo
);
1363 /* Compute -0.5 / size. */
1364 for (unsigned c
= 0; c
< 2; c
++) {
1366 LLVMBuildExtractElement(ctx
->builder
, size
,
1367 LLVMConstInt(ctx
->i32
, c
, 0), "");
1368 half_texel
[c
] = LLVMBuildUIToFP(ctx
->builder
, half_texel
[c
], ctx
->f32
, "");
1369 half_texel
[c
] = ac_build_fdiv(ctx
, ctx
->f32_1
, half_texel
[c
]);
1370 half_texel
[c
] = LLVMBuildFMul(ctx
->builder
, half_texel
[c
],
1371 LLVMConstReal(ctx
->f32
, -0.5), "");
1374 if (wa_8888
|| unnorm
) {
1375 ac_build_endif(ctx
, 2000);
1377 for (unsigned c
= 0; c
< 2; c
++) {
1378 LLVMValueRef values
[2] = { default_offset
, half_texel
[c
] };
1379 half_texel
[c
] = ac_build_phi(ctx
, ctx
->f32
, 2,
1385 for (unsigned c
= 0; c
< 2; c
++) {
1387 tmp
= LLVMBuildBitCast(ctx
->builder
, args
->coords
[c
], ctx
->f32
, "");
1388 args
->coords
[c
] = LLVMBuildFAdd(ctx
->builder
, tmp
, half_texel
[c
], "");
1391 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1392 result
= ac_build_image_opcode(ctx
, args
);
1394 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
) {
1395 LLVMValueRef tmp
, tmp2
;
1397 /* if the cube workaround is in place, f2i the result. */
1398 for (unsigned c
= 0; c
< 4; c
++) {
1399 tmp
= LLVMBuildExtractElement(ctx
->builder
, result
, LLVMConstInt(ctx
->i32
, c
, false), "");
1400 if (stype
== GLSL_TYPE_UINT
)
1401 tmp2
= LLVMBuildFPToUI(ctx
->builder
, tmp
, ctx
->i32
, "");
1403 tmp2
= LLVMBuildFPToSI(ctx
->builder
, tmp
, ctx
->i32
, "");
1404 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->i32
, "");
1405 tmp2
= LLVMBuildBitCast(ctx
->builder
, tmp2
, ctx
->i32
, "");
1406 tmp
= LLVMBuildSelect(ctx
->builder
, wa_8888
, tmp2
, tmp
, "");
1407 tmp
= LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f32
, "");
1408 result
= LLVMBuildInsertElement(ctx
->builder
, result
, tmp
, LLVMConstInt(ctx
->i32
, c
, false), "");
1414 static nir_deref_instr
*get_tex_texture_deref(const nir_tex_instr
*instr
)
1416 nir_deref_instr
*texture_deref_instr
= NULL
;
1418 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
1419 switch (instr
->src
[i
].src_type
) {
1420 case nir_tex_src_texture_deref
:
1421 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
1427 return texture_deref_instr
;
1430 static LLVMValueRef
build_tex_intrinsic(struct ac_nir_context
*ctx
,
1431 const nir_tex_instr
*instr
,
1432 struct ac_image_args
*args
)
1434 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
1435 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
1437 assert(instr
->dest
.is_ssa
);
1438 return ac_build_buffer_load_format(&ctx
->ac
,
1442 util_last_bit(mask
),
1444 instr
->dest
.ssa
.bit_size
== 16);
1447 args
->opcode
= ac_image_sample
;
1449 switch (instr
->op
) {
1451 case nir_texop_txf_ms
:
1452 case nir_texop_samples_identical
:
1453 args
->opcode
= args
->level_zero
||
1454 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
?
1455 ac_image_load
: ac_image_load_mip
;
1456 args
->level_zero
= false;
1459 case nir_texop_query_levels
:
1460 args
->opcode
= ac_image_get_resinfo
;
1462 args
->lod
= ctx
->ac
.i32_0
;
1463 args
->level_zero
= false;
1466 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1468 args
->level_zero
= true;
1472 args
->opcode
= ac_image_gather4
;
1473 if (!args
->lod
&& !args
->bias
)
1474 args
->level_zero
= true;
1477 args
->opcode
= ac_image_get_lod
;
1479 case nir_texop_fragment_fetch
:
1480 case nir_texop_fragment_mask_fetch
:
1481 args
->opcode
= ac_image_load
;
1482 args
->level_zero
= false;
1488 if (instr
->op
== nir_texop_tg4
&& ctx
->ac
.chip_class
<= GFX8
) {
1489 nir_deref_instr
*texture_deref_instr
= get_tex_texture_deref(instr
);
1490 nir_variable
*var
= nir_deref_instr_get_variable(texture_deref_instr
);
1491 const struct glsl_type
*type
= glsl_without_array(var
->type
);
1492 enum glsl_base_type stype
= glsl_get_sampler_result_type(type
);
1493 if (stype
== GLSL_TYPE_UINT
|| stype
== GLSL_TYPE_INT
) {
1494 return lower_gather4_integer(&ctx
->ac
, var
, args
, instr
);
1498 /* Fixup for GFX9 which allocates 1D textures as 2D. */
1499 if (instr
->op
== nir_texop_lod
&& ctx
->ac
.chip_class
== GFX9
) {
1500 if ((args
->dim
== ac_image_2darray
||
1501 args
->dim
== ac_image_2d
) && !args
->coords
[1]) {
1502 args
->coords
[1] = ctx
->ac
.i32_0
;
1506 args
->attributes
= AC_FUNC_ATTR_READNONE
;
1507 bool cs_derivs
= ctx
->stage
== MESA_SHADER_COMPUTE
&&
1508 ctx
->info
->cs
.derivative_group
!= DERIVATIVE_GROUP_NONE
;
1509 if (ctx
->stage
== MESA_SHADER_FRAGMENT
|| cs_derivs
) {
1510 /* Prevent texture instructions with implicit derivatives from being
1511 * sinked into branches. */
1512 switch (instr
->op
) {
1516 args
->attributes
|= AC_FUNC_ATTR_CONVERGENT
;
1523 return ac_build_image_opcode(&ctx
->ac
, args
);
1526 static LLVMValueRef
visit_vulkan_resource_reindex(struct ac_nir_context
*ctx
,
1527 nir_intrinsic_instr
*instr
)
1529 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
1530 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
1532 LLVMValueRef result
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
1533 LLVMSetMetadata(result
, ctx
->ac
.uniform_md_kind
, ctx
->ac
.empty_md
);
1537 static LLVMValueRef
visit_load_push_constant(struct ac_nir_context
*ctx
,
1538 nir_intrinsic_instr
*instr
)
1540 LLVMValueRef ptr
, addr
;
1541 LLVMValueRef src0
= get_src(ctx
, instr
->src
[0]);
1542 unsigned index
= nir_intrinsic_base(instr
);
1544 addr
= LLVMConstInt(ctx
->ac
.i32
, index
, 0);
1545 addr
= LLVMBuildAdd(ctx
->ac
.builder
, addr
, src0
, "");
1547 /* Load constant values from user SGPRS when possible, otherwise
1548 * fallback to the default path that loads directly from memory.
1550 if (LLVMIsConstant(src0
) &&
1551 instr
->dest
.ssa
.bit_size
== 32) {
1552 unsigned count
= instr
->dest
.ssa
.num_components
;
1553 unsigned offset
= index
;
1555 offset
+= LLVMConstIntGetZExtValue(src0
);
1558 offset
-= ctx
->args
->base_inline_push_consts
;
1560 unsigned num_inline_push_consts
= ctx
->args
->num_inline_push_consts
;
1561 if (offset
+ count
<= num_inline_push_consts
) {
1562 LLVMValueRef push_constants
[num_inline_push_consts
];
1563 for (unsigned i
= 0; i
< num_inline_push_consts
; i
++)
1564 push_constants
[i
] = ac_get_arg(&ctx
->ac
,
1565 ctx
->args
->inline_push_consts
[i
]);
1566 return ac_build_gather_values(&ctx
->ac
,
1567 push_constants
+ offset
,
1572 ptr
= LLVMBuildGEP(ctx
->ac
.builder
,
1573 ac_get_arg(&ctx
->ac
, ctx
->args
->push_constants
), &addr
, 1, "");
1575 if (instr
->dest
.ssa
.bit_size
== 8) {
1576 unsigned load_dwords
= instr
->dest
.ssa
.num_components
> 1 ? 2 : 1;
1577 LLVMTypeRef vec_type
= LLVMVectorType(ctx
->ac
.i8
, 4 * load_dwords
);
1578 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1579 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1581 LLVMValueRef params
[3];
1582 if (load_dwords
> 1) {
1583 LLVMValueRef res_vec
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, ctx
->ac
.v2i32
, "");
1584 params
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
1585 params
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, res_vec
, LLVMConstInt(ctx
->ac
.i32
, 0, false), "");
1587 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, ctx
->ac
.i32
, "");
1588 params
[0] = ctx
->ac
.i32_0
;
1592 res
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.alignbyte", ctx
->ac
.i32
, params
, 3, 0);
1594 res
= LLVMBuildTrunc(ctx
->ac
.builder
, res
, LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.num_components
* 8), "");
1595 if (instr
->dest
.ssa
.num_components
> 1)
1596 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, LLVMVectorType(ctx
->ac
.i8
, instr
->dest
.ssa
.num_components
), "");
1598 } else if (instr
->dest
.ssa
.bit_size
== 16) {
1599 unsigned load_dwords
= instr
->dest
.ssa
.num_components
/ 2 + 1;
1600 LLVMTypeRef vec_type
= LLVMVectorType(ctx
->ac
.i16
, 2 * load_dwords
);
1601 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, vec_type
);
1602 LLVMValueRef res
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1603 res
= LLVMBuildBitCast(ctx
->ac
.builder
, res
, vec_type
, "");
1604 LLVMValueRef cond
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, ctx
->ac
.i32_1
, "");
1605 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
, ctx
->ac
.i1
, "");
1606 LLVMValueRef mask
[] = { LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
1607 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
1608 LLVMConstInt(ctx
->ac
.i32
, 4, false)};
1609 LLVMValueRef swizzle_aligned
= LLVMConstVector(&mask
[0], instr
->dest
.ssa
.num_components
);
1610 LLVMValueRef swizzle_unaligned
= LLVMConstVector(&mask
[1], instr
->dest
.ssa
.num_components
);
1611 LLVMValueRef shuffle_aligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_aligned
, "");
1612 LLVMValueRef shuffle_unaligned
= LLVMBuildShuffleVector(ctx
->ac
.builder
, res
, res
, swizzle_unaligned
, "");
1613 res
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, shuffle_unaligned
, shuffle_aligned
, "");
1614 return LLVMBuildBitCast(ctx
->ac
.builder
, res
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
1617 ptr
= ac_cast_ptr(&ctx
->ac
, ptr
, get_def_type(ctx
, &instr
->dest
.ssa
));
1619 return LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
1622 static LLVMValueRef
visit_get_buffer_size(struct ac_nir_context
*ctx
,
1623 const nir_intrinsic_instr
*instr
)
1625 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
1627 return get_buffer_size(ctx
, ctx
->abi
->load_ssbo(ctx
->abi
, index
, false), false);
1630 static uint32_t widen_mask(uint32_t mask
, unsigned multiplier
)
1632 uint32_t new_mask
= 0;
1633 for(unsigned i
= 0; i
< 32 && (1u << i
) <= mask
; ++i
)
1634 if (mask
& (1u << i
))
1635 new_mask
|= ((1u << multiplier
) - 1u) << (i
* multiplier
);
1639 static LLVMValueRef
extract_vector_range(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
1640 unsigned start
, unsigned count
)
1642 LLVMValueRef mask
[] = {
1643 ctx
->i32_0
, ctx
->i32_1
,
1644 LLVMConstInt(ctx
->i32
, 2, false), LLVMConstInt(ctx
->i32
, 3, false) };
1646 unsigned src_elements
= ac_get_llvm_num_components(src
);
1648 if (count
== src_elements
) {
1651 } else if (count
== 1) {
1652 assert(start
< src_elements
);
1653 return LLVMBuildExtractElement(ctx
->builder
, src
, mask
[start
], "");
1655 assert(start
+ count
<= src_elements
);
1657 LLVMValueRef swizzle
= LLVMConstVector(&mask
[start
], count
);
1658 return LLVMBuildShuffleVector(ctx
->builder
, src
, src
, swizzle
, "");
1662 static unsigned get_cache_policy(struct ac_nir_context
*ctx
,
1663 enum gl_access_qualifier access
,
1664 bool may_store_unaligned
,
1665 bool writeonly_memory
)
1667 unsigned cache_policy
= 0;
1669 /* GFX6 has a TC L1 bug causing corruption of 8bit/16bit stores. All
1670 * store opcodes not aligned to a dword are affected. The only way to
1671 * get unaligned stores is through shader images.
1673 if (((may_store_unaligned
&& ctx
->ac
.chip_class
== GFX6
) ||
1674 /* If this is write-only, don't keep data in L1 to prevent
1675 * evicting L1 cache lines that may be needed by other
1679 access
& (ACCESS_COHERENT
| ACCESS_VOLATILE
))) {
1680 cache_policy
|= ac_glc
;
1683 if (access
& ACCESS_STREAM_CACHE_POLICY
)
1684 cache_policy
|= ac_slc
| ac_glc
;
1686 return cache_policy
;
1689 static LLVMValueRef
enter_waterfall_ssbo(struct ac_nir_context
*ctx
,
1690 struct waterfall_context
*wctx
,
1691 const nir_intrinsic_instr
*instr
,
1694 return enter_waterfall(ctx
, wctx
, get_src(ctx
, src
),
1695 nir_intrinsic_access(instr
) & ACCESS_NON_UNIFORM
);
1698 static void visit_store_ssbo(struct ac_nir_context
*ctx
,
1699 nir_intrinsic_instr
*instr
)
1701 if (ctx
->ac
.postponed_kill
) {
1702 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
1703 ctx
->ac
.postponed_kill
, "");
1704 ac_build_ifcc(&ctx
->ac
, cond
, 7000);
1707 LLVMValueRef src_data
= get_src(ctx
, instr
->src
[0]);
1708 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src_data
)) / 8;
1709 unsigned writemask
= nir_intrinsic_write_mask(instr
);
1710 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1711 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
1712 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, writeonly_memory
);
1714 struct waterfall_context wctx
;
1715 LLVMValueRef rsrc_base
= enter_waterfall_ssbo(ctx
, &wctx
, instr
, instr
->src
[1]);
1717 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
, rsrc_base
, true);
1718 LLVMValueRef base_data
= src_data
;
1719 base_data
= ac_trim_vector(&ctx
->ac
, base_data
, instr
->num_components
);
1720 LLVMValueRef base_offset
= get_src(ctx
, instr
->src
[2]);
1724 LLVMValueRef data
, offset
;
1725 LLVMTypeRef data_type
;
1727 u_bit_scan_consecutive_range(&writemask
, &start
, &count
);
1729 /* Due to an LLVM limitation with LLVM < 9, split 3-element
1730 * writes into a 2-element and a 1-element write. */
1732 (elem_size_bytes
!= 4 || !ac_has_vec3_support(ctx
->ac
.chip_class
, false))) {
1733 writemask
|= 1 << (start
+ 2);
1736 int num_bytes
= count
* elem_size_bytes
; /* count in bytes */
1738 /* we can only store 4 DWords at the same time.
1739 * can only happen for 64 Bit vectors. */
1740 if (num_bytes
> 16) {
1741 writemask
|= ((1u << (count
- 2)) - 1u) << (start
+ 2);
1746 /* check alignment of 16 Bit stores */
1747 if (elem_size_bytes
== 2 && num_bytes
> 2 && (start
% 2) == 1) {
1748 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1753 /* Due to alignment issues, split stores of 8-bit/16-bit
1756 if (ctx
->ac
.chip_class
== GFX6
&& count
> 1 && elem_size_bytes
< 4) {
1757 writemask
|= ((1u << (count
- 1)) - 1u) << (start
+ 1);
1759 num_bytes
= elem_size_bytes
;
1762 data
= extract_vector_range(&ctx
->ac
, base_data
, start
, count
);
1764 offset
= LLVMBuildAdd(ctx
->ac
.builder
, base_offset
,
1765 LLVMConstInt(ctx
->ac
.i32
, start
* elem_size_bytes
, false), "");
1767 if (num_bytes
== 1) {
1768 ac_build_tbuffer_store_byte(&ctx
->ac
, rsrc
, data
,
1769 offset
, ctx
->ac
.i32_0
,
1771 } else if (num_bytes
== 2) {
1772 ac_build_tbuffer_store_short(&ctx
->ac
, rsrc
, data
,
1773 offset
, ctx
->ac
.i32_0
,
1776 int num_channels
= num_bytes
/ 4;
1778 switch (num_bytes
) {
1779 case 16: /* v4f32 */
1780 data_type
= ctx
->ac
.v4f32
;
1782 case 12: /* v3f32 */
1783 data_type
= ctx
->ac
.v3f32
;
1786 data_type
= ctx
->ac
.v2f32
;
1789 data_type
= ctx
->ac
.f32
;
1792 unreachable("Malformed vector store.");
1794 data
= LLVMBuildBitCast(ctx
->ac
.builder
, data
, data_type
, "");
1796 ac_build_buffer_store_dword(&ctx
->ac
, rsrc
, data
,
1797 num_channels
, offset
,
1803 exit_waterfall(ctx
, &wctx
, NULL
);
1805 if (ctx
->ac
.postponed_kill
)
1806 ac_build_endif(&ctx
->ac
, 7000);
1809 static LLVMValueRef
emit_ssbo_comp_swap_64(struct ac_nir_context
*ctx
,
1810 LLVMValueRef descriptor
,
1811 LLVMValueRef offset
,
1812 LLVMValueRef compare
,
1813 LLVMValueRef exchange
)
1815 LLVMBasicBlockRef start_block
= NULL
, then_block
= NULL
;
1816 if (ctx
->abi
->robust_buffer_access
) {
1817 LLVMValueRef size
= ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 2);
1819 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
, offset
, size
, "");
1820 start_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1822 ac_build_ifcc(&ctx
->ac
, cond
, -1);
1824 then_block
= LLVMGetInsertBlock(ctx
->ac
.builder
);
1827 LLVMValueRef ptr_parts
[2] = {
1828 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 0),
1829 LLVMBuildAnd(ctx
->ac
.builder
,
1830 ac_llvm_extract_elem(&ctx
->ac
, descriptor
, 1),
1831 LLVMConstInt(ctx
->ac
.i32
, 65535, 0), "")
1834 ptr_parts
[1] = LLVMBuildTrunc(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i16
, "");
1835 ptr_parts
[1] = LLVMBuildSExt(ctx
->ac
.builder
, ptr_parts
[1], ctx
->ac
.i32
, "");
1837 offset
= LLVMBuildZExt(ctx
->ac
.builder
, offset
, ctx
->ac
.i64
, "");
1839 LLVMValueRef ptr
= ac_build_gather_values(&ctx
->ac
, ptr_parts
, 2);
1840 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ctx
->ac
.i64
, "");
1841 ptr
= LLVMBuildAdd(ctx
->ac
.builder
, ptr
, offset
, "");
1842 ptr
= LLVMBuildIntToPtr(ctx
->ac
.builder
, ptr
, LLVMPointerType(ctx
->ac
.i64
, AC_ADDR_SPACE_GLOBAL
), "");
1844 LLVMValueRef result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, compare
, exchange
, "singlethread-one-as");
1845 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
1847 if (ctx
->abi
->robust_buffer_access
) {
1848 ac_build_endif(&ctx
->ac
, -1);
1850 LLVMBasicBlockRef incoming_blocks
[2] = {
1855 LLVMValueRef incoming_values
[2] = {
1856 LLVMConstInt(ctx
->ac
.i64
, 0, 0),
1859 LLVMValueRef ret
= LLVMBuildPhi(ctx
->ac
.builder
, ctx
->ac
.i64
, "");
1860 LLVMAddIncoming(ret
, incoming_values
, incoming_blocks
, 2);
1867 static LLVMValueRef
visit_atomic_ssbo(struct ac_nir_context
*ctx
,
1868 nir_intrinsic_instr
*instr
)
1870 if (ctx
->ac
.postponed_kill
) {
1871 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
1872 ctx
->ac
.postponed_kill
, "");
1873 ac_build_ifcc(&ctx
->ac
, cond
, 7001);
1876 LLVMTypeRef return_type
= LLVMTypeOf(get_src(ctx
, instr
->src
[2]));
1878 char name
[64], type
[8];
1879 LLVMValueRef params
[6], descriptor
;
1880 LLVMValueRef result
;
1883 struct waterfall_context wctx
;
1884 LLVMValueRef rsrc_base
= enter_waterfall_ssbo(ctx
, &wctx
, instr
, instr
->src
[0]);
1886 switch (instr
->intrinsic
) {
1887 case nir_intrinsic_ssbo_atomic_add
:
1890 case nir_intrinsic_ssbo_atomic_imin
:
1893 case nir_intrinsic_ssbo_atomic_umin
:
1896 case nir_intrinsic_ssbo_atomic_imax
:
1899 case nir_intrinsic_ssbo_atomic_umax
:
1902 case nir_intrinsic_ssbo_atomic_and
:
1905 case nir_intrinsic_ssbo_atomic_or
:
1908 case nir_intrinsic_ssbo_atomic_xor
:
1911 case nir_intrinsic_ssbo_atomic_exchange
:
1914 case nir_intrinsic_ssbo_atomic_comp_swap
:
1921 descriptor
= ctx
->abi
->load_ssbo(ctx
->abi
,
1925 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
&&
1926 return_type
== ctx
->ac
.i64
) {
1927 result
= emit_ssbo_comp_swap_64(ctx
, descriptor
,
1928 get_src(ctx
, instr
->src
[1]),
1929 get_src(ctx
, instr
->src
[2]),
1930 get_src(ctx
, instr
->src
[3]));
1932 if (instr
->intrinsic
== nir_intrinsic_ssbo_atomic_comp_swap
) {
1933 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[3]), 0);
1935 params
[arg_count
++] = ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
1936 params
[arg_count
++] = descriptor
;
1938 if (LLVM_VERSION_MAJOR
>= 9) {
1939 /* XXX: The new raw/struct atomic intrinsics are buggy with
1940 * LLVM 8, see r358579.
1942 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1943 params
[arg_count
++] = ctx
->ac
.i32_0
; /* soffset */
1944 params
[arg_count
++] = ctx
->ac
.i32_0
; /* slc */
1946 ac_build_type_name_for_intr(return_type
, type
, sizeof(type
));
1947 snprintf(name
, sizeof(name
),
1948 "llvm.amdgcn.raw.buffer.atomic.%s.%s", op
, type
);
1950 params
[arg_count
++] = ctx
->ac
.i32_0
; /* vindex */
1951 params
[arg_count
++] = get_src(ctx
, instr
->src
[1]); /* voffset */
1952 params
[arg_count
++] = ctx
->ac
.i1false
; /* slc */
1954 assert(return_type
== ctx
->ac
.i32
);
1955 snprintf(name
, sizeof(name
),
1956 "llvm.amdgcn.buffer.atomic.%s", op
);
1959 result
= ac_build_intrinsic(&ctx
->ac
, name
, return_type
, params
,
1963 result
= exit_waterfall(ctx
, &wctx
, result
);
1964 if (ctx
->ac
.postponed_kill
)
1965 ac_build_endif(&ctx
->ac
, 7001);
1969 static LLVMValueRef
visit_load_buffer(struct ac_nir_context
*ctx
,
1970 nir_intrinsic_instr
*instr
)
1972 struct waterfall_context wctx
;
1973 LLVMValueRef rsrc_base
= enter_waterfall_ssbo(ctx
, &wctx
, instr
, instr
->src
[0]);
1975 int elem_size_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
1976 int num_components
= instr
->num_components
;
1977 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
1978 unsigned cache_policy
= get_cache_policy(ctx
, access
, false, false);
1980 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
1981 LLVMValueRef rsrc
= ctx
->abi
->load_ssbo(ctx
->abi
, rsrc_base
, false);
1982 LLVMValueRef vindex
= ctx
->ac
.i32_0
;
1984 LLVMTypeRef def_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
1985 LLVMTypeRef def_elem_type
= num_components
> 1 ? LLVMGetElementType(def_type
) : def_type
;
1987 LLVMValueRef results
[4];
1988 for (int i
= 0; i
< num_components
;) {
1989 int num_elems
= num_components
- i
;
1990 if (elem_size_bytes
< 4 && nir_intrinsic_align(instr
) % 4 != 0)
1992 if (num_elems
* elem_size_bytes
> 16)
1993 num_elems
= 16 / elem_size_bytes
;
1994 int load_bytes
= num_elems
* elem_size_bytes
;
1996 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
, i
* elem_size_bytes
, false);
2000 if (load_bytes
== 1) {
2001 ret
= ac_build_tbuffer_load_byte(&ctx
->ac
,
2007 } else if (load_bytes
== 2) {
2008 ret
= ac_build_tbuffer_load_short(&ctx
->ac
,
2015 int num_channels
= util_next_power_of_two(load_bytes
) / 4;
2016 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2018 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_channels
,
2019 vindex
, offset
, immoffset
, 0,
2020 cache_policy
, can_speculate
, false);
2023 LLVMTypeRef byte_vec
= LLVMVectorType(ctx
->ac
.i8
, ac_get_type_size(LLVMTypeOf(ret
)));
2024 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, byte_vec
, "");
2025 ret
= ac_trim_vector(&ctx
->ac
, ret
, load_bytes
);
2027 LLVMTypeRef ret_type
= LLVMVectorType(def_elem_type
, num_elems
);
2028 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ret_type
, "");
2030 for (unsigned j
= 0; j
< num_elems
; j
++) {
2031 results
[i
+ j
] = LLVMBuildExtractElement(ctx
->ac
.builder
, ret
, LLVMConstInt(ctx
->ac
.i32
, j
, false), "");
2036 LLVMValueRef ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
2037 return exit_waterfall(ctx
, &wctx
, ret
);
2040 static LLVMValueRef
enter_waterfall_ubo(struct ac_nir_context
*ctx
,
2041 struct waterfall_context
*wctx
,
2042 const nir_intrinsic_instr
*instr
)
2044 return enter_waterfall(ctx
, wctx
, get_src(ctx
, instr
->src
[0]),
2045 nir_intrinsic_access(instr
) & ACCESS_NON_UNIFORM
);
2048 static LLVMValueRef
visit_load_ubo_buffer(struct ac_nir_context
*ctx
,
2049 nir_intrinsic_instr
*instr
)
2051 struct waterfall_context wctx
;
2052 LLVMValueRef rsrc_base
= enter_waterfall_ubo(ctx
, &wctx
, instr
);
2055 LLVMValueRef rsrc
= rsrc_base
;
2056 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
2057 int num_components
= instr
->num_components
;
2059 if (ctx
->abi
->load_ubo
)
2060 rsrc
= ctx
->abi
->load_ubo(ctx
->abi
, rsrc
);
2062 if (instr
->dest
.ssa
.bit_size
== 64)
2063 num_components
*= 2;
2065 if (instr
->dest
.ssa
.bit_size
== 16 || instr
->dest
.ssa
.bit_size
== 8) {
2066 unsigned load_bytes
= instr
->dest
.ssa
.bit_size
/ 8;
2067 LLVMValueRef results
[num_components
];
2068 for (unsigned i
= 0; i
< num_components
; ++i
) {
2069 LLVMValueRef immoffset
= LLVMConstInt(ctx
->ac
.i32
,
2072 if (load_bytes
== 1) {
2073 results
[i
] = ac_build_tbuffer_load_byte(&ctx
->ac
,
2080 assert(load_bytes
== 2);
2081 results
[i
] = ac_build_tbuffer_load_short(&ctx
->ac
,
2089 ret
= ac_build_gather_values(&ctx
->ac
, results
, num_components
);
2091 ret
= ac_build_buffer_load(&ctx
->ac
, rsrc
, num_components
, NULL
, offset
,
2092 NULL
, 0, 0, true, true);
2094 ret
= ac_trim_vector(&ctx
->ac
, ret
, num_components
);
2097 ret
= LLVMBuildBitCast(ctx
->ac
.builder
, ret
,
2098 get_def_type(ctx
, &instr
->dest
.ssa
), "");
2100 return exit_waterfall(ctx
, &wctx
, ret
);
2104 get_deref_offset(struct ac_nir_context
*ctx
, nir_deref_instr
*instr
,
2105 bool vs_in
, unsigned *vertex_index_out
,
2106 LLVMValueRef
*vertex_index_ref
,
2107 unsigned *const_out
, LLVMValueRef
*indir_out
)
2109 nir_variable
*var
= nir_deref_instr_get_variable(instr
);
2110 nir_deref_path path
;
2111 unsigned idx_lvl
= 1;
2113 nir_deref_path_init(&path
, instr
, NULL
);
2115 if (vertex_index_out
!= NULL
|| vertex_index_ref
!= NULL
) {
2116 if (vertex_index_ref
) {
2117 *vertex_index_ref
= get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
);
2118 if (vertex_index_out
)
2119 *vertex_index_out
= 0;
2121 *vertex_index_out
= nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
2126 uint32_t const_offset
= 0;
2127 LLVMValueRef offset
= NULL
;
2129 if (var
->data
.compact
) {
2130 assert(instr
->deref_type
== nir_deref_type_array
);
2131 const_offset
= nir_src_as_uint(instr
->arr
.index
);
2135 for (; path
.path
[idx_lvl
]; ++idx_lvl
) {
2136 const struct glsl_type
*parent_type
= path
.path
[idx_lvl
- 1]->type
;
2137 if (path
.path
[idx_lvl
]->deref_type
== nir_deref_type_struct
) {
2138 unsigned index
= path
.path
[idx_lvl
]->strct
.index
;
2140 for (unsigned i
= 0; i
< index
; i
++) {
2141 const struct glsl_type
*ft
= glsl_get_struct_field(parent_type
, i
);
2142 const_offset
+= glsl_count_attribute_slots(ft
, vs_in
);
2144 } else if(path
.path
[idx_lvl
]->deref_type
== nir_deref_type_array
) {
2145 unsigned size
= glsl_count_attribute_slots(path
.path
[idx_lvl
]->type
, vs_in
);
2146 if (nir_src_is_const(path
.path
[idx_lvl
]->arr
.index
)) {
2147 const_offset
+= size
*
2148 nir_src_as_uint(path
.path
[idx_lvl
]->arr
.index
);
2150 LLVMValueRef array_off
= LLVMBuildMul(ctx
->ac
.builder
, LLVMConstInt(ctx
->ac
.i32
, size
, 0),
2151 get_src(ctx
, path
.path
[idx_lvl
]->arr
.index
), "");
2153 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, array_off
, "");
2158 unreachable("Uhandled deref type in get_deref_instr_offset");
2162 nir_deref_path_finish(&path
);
2164 if (const_offset
&& offset
)
2165 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
2166 LLVMConstInt(ctx
->ac
.i32
, const_offset
, 0),
2169 *const_out
= const_offset
;
2170 *indir_out
= offset
;
2173 static LLVMValueRef
load_tess_varyings(struct ac_nir_context
*ctx
,
2174 nir_intrinsic_instr
*instr
,
2177 LLVMValueRef result
;
2178 LLVMValueRef vertex_index
= NULL
;
2179 LLVMValueRef indir_index
= NULL
;
2180 unsigned const_index
= 0;
2182 nir_variable
*var
= nir_deref_instr_get_variable(nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
));
2184 unsigned location
= var
->data
.location
;
2185 unsigned driver_location
= var
->data
.driver_location
;
2186 const bool is_patch
= var
->data
.patch
||
2187 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
2188 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
;
2189 const bool is_compact
= var
->data
.compact
;
2191 get_deref_offset(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2192 false, NULL
, is_patch
? NULL
: &vertex_index
,
2193 &const_index
, &indir_index
);
2195 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2197 LLVMTypeRef src_component_type
;
2198 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
2199 src_component_type
= LLVMGetElementType(dest_type
);
2201 src_component_type
= dest_type
;
2203 result
= ctx
->abi
->load_tess_varyings(ctx
->abi
, src_component_type
,
2204 vertex_index
, indir_index
,
2205 const_index
, location
, driver_location
,
2206 var
->data
.location_frac
,
2207 instr
->num_components
,
2208 is_patch
, is_compact
, load_inputs
);
2209 if (instr
->dest
.ssa
.bit_size
== 16) {
2210 result
= ac_to_integer(&ctx
->ac
, result
);
2211 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
2213 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
2217 type_scalar_size_bytes(const struct glsl_type
*type
)
2219 assert(glsl_type_is_vector_or_scalar(type
) ||
2220 glsl_type_is_matrix(type
));
2221 return glsl_type_is_boolean(type
) ? 4 : glsl_get_bit_size(type
) / 8;
2224 static LLVMValueRef
visit_load_var(struct ac_nir_context
*ctx
,
2225 nir_intrinsic_instr
*instr
)
2227 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2228 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2230 LLVMValueRef values
[8];
2232 int ve
= instr
->dest
.ssa
.num_components
;
2234 LLVMValueRef indir_index
;
2236 unsigned const_index
;
2237 unsigned stride
= 4;
2238 int mode
= deref
->mode
;
2241 bool vs_in
= ctx
->stage
== MESA_SHADER_VERTEX
&&
2242 var
->data
.mode
== nir_var_shader_in
;
2243 idx
= var
->data
.driver_location
;
2244 comp
= var
->data
.location_frac
;
2245 mode
= var
->data
.mode
;
2247 get_deref_offset(ctx
, deref
, vs_in
, NULL
, NULL
,
2248 &const_index
, &indir_index
);
2250 if (var
->data
.compact
) {
2252 const_index
+= comp
;
2257 if (instr
->dest
.ssa
.bit_size
== 64 &&
2258 (deref
->mode
== nir_var_shader_in
||
2259 deref
->mode
== nir_var_shader_out
||
2260 deref
->mode
== nir_var_function_temp
))
2264 case nir_var_shader_in
:
2265 /* TODO: remove this after RADV switches to lowered IO */
2266 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
2267 ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
2268 return load_tess_varyings(ctx
, instr
, true);
2271 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
2272 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
2273 LLVMValueRef indir_index
;
2274 unsigned const_index
, vertex_index
;
2275 get_deref_offset(ctx
, deref
, false, &vertex_index
, NULL
,
2276 &const_index
, &indir_index
);
2277 assert(indir_index
== NULL
);
2279 return ctx
->abi
->load_inputs(ctx
->abi
, var
->data
.location
,
2280 var
->data
.driver_location
,
2281 var
->data
.location_frac
,
2282 instr
->num_components
, vertex_index
, const_index
, type
);
2285 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2287 unsigned count
= glsl_count_attribute_slots(
2289 ctx
->stage
== MESA_SHADER_VERTEX
);
2291 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2292 &ctx
->ac
, ctx
->abi
->inputs
+ idx
+ chan
, count
,
2293 stride
, false, true);
2295 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2299 values
[chan
] = ctx
->abi
->inputs
[idx
+ chan
+ const_index
* stride
];
2302 case nir_var_function_temp
:
2303 for (unsigned chan
= 0; chan
< ve
; chan
++) {
2305 unsigned count
= glsl_count_attribute_slots(
2308 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2309 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2310 stride
, true, true);
2312 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2316 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, ctx
->locals
[idx
+ chan
+ const_index
* stride
], "");
2320 case nir_var_shader_out
:
2321 /* TODO: remove this after RADV switches to lowered IO */
2322 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2323 return load_tess_varyings(ctx
, instr
, false);
2326 if (ctx
->stage
== MESA_SHADER_FRAGMENT
&&
2327 var
->data
.fb_fetch_output
&&
2328 ctx
->abi
->emit_fbfetch
)
2329 return ctx
->abi
->emit_fbfetch(ctx
->abi
);
2331 for (unsigned chan
= comp
; chan
< ve
+ comp
; chan
++) {
2333 unsigned count
= glsl_count_attribute_slots(
2336 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2337 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2338 stride
, true, true);
2340 values
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
2344 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
2345 ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
],
2350 case nir_var_mem_global
: {
2351 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2352 LLVMTypeRef result_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
2353 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2354 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2355 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2356 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, result_type
) / 8;
2357 bool split_loads
= ctx
->ac
.chip_class
== GFX6
&& elem_size_bytes
< 4;
2359 if (stride
!= natural_stride
|| split_loads
) {
2360 if (LLVMGetTypeKind(result_type
) == LLVMVectorTypeKind
)
2361 result_type
= LLVMGetElementType(result_type
);
2363 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2364 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2365 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2367 for (unsigned i
= 0; i
< instr
->dest
.ssa
.num_components
; ++i
) {
2368 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, i
* stride
/ natural_stride
, 0);
2369 values
[i
] = LLVMBuildLoad(ctx
->ac
.builder
,
2370 ac_build_gep_ptr(&ctx
->ac
, address
, offset
), "");
2372 if (nir_intrinsic_access(instr
) & (ACCESS_COHERENT
| ACCESS_VOLATILE
))
2373 LLVMSetOrdering(values
[i
], LLVMAtomicOrderingMonotonic
);
2375 return ac_build_gather_values(&ctx
->ac
, values
, instr
->dest
.ssa
.num_components
);
2377 LLVMTypeRef ptr_type
= LLVMPointerType(result_type
,
2378 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2379 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2380 LLVMValueRef val
= LLVMBuildLoad(ctx
->ac
.builder
, address
, "");
2382 if (nir_intrinsic_access(instr
) & (ACCESS_COHERENT
| ACCESS_VOLATILE
))
2383 LLVMSetOrdering(val
, LLVMAtomicOrderingMonotonic
);
2388 unreachable("unhandle variable mode");
2390 ret
= ac_build_varying_gather_values(&ctx
->ac
, values
, ve
, comp
);
2391 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
2395 visit_store_var(struct ac_nir_context
*ctx
,
2396 nir_intrinsic_instr
*instr
)
2398 if (ctx
->ac
.postponed_kill
) {
2399 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2400 ctx
->ac
.postponed_kill
, "");
2401 ac_build_ifcc(&ctx
->ac
, cond
, 7002);
2404 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2405 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
2407 LLVMValueRef temp_ptr
, value
;
2410 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[1]));
2411 int writemask
= instr
->const_index
[0];
2412 LLVMValueRef indir_index
;
2413 unsigned const_index
;
2416 get_deref_offset(ctx
, deref
, false,
2417 NULL
, NULL
, &const_index
, &indir_index
);
2418 idx
= var
->data
.driver_location
;
2419 comp
= var
->data
.location_frac
;
2421 if (var
->data
.compact
) {
2422 const_index
+= comp
;
2427 if (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
)) == 64 &&
2428 (deref
->mode
== nir_var_shader_out
||
2429 deref
->mode
== nir_var_function_temp
)) {
2431 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2432 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2435 writemask
= widen_mask(writemask
, 2);
2438 writemask
= writemask
<< comp
;
2440 switch (deref
->mode
) {
2441 case nir_var_shader_out
:
2442 /* TODO: remove this after RADV switches to lowered IO */
2443 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2444 LLVMValueRef vertex_index
= NULL
;
2445 LLVMValueRef indir_index
= NULL
;
2446 unsigned const_index
= 0;
2447 const bool is_patch
= var
->data
.patch
||
2448 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
2449 var
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
;
2451 get_deref_offset(ctx
, deref
, false, NULL
,
2452 is_patch
? NULL
: &vertex_index
,
2453 &const_index
, &indir_index
);
2455 ctx
->abi
->store_tcs_outputs(ctx
->abi
, var
,
2456 vertex_index
, indir_index
,
2457 const_index
, src
, writemask
,
2458 var
->data
.location_frac
,
2459 var
->data
.driver_location
);
2463 for (unsigned chan
= 0; chan
< 8; chan
++) {
2465 if (!(writemask
& (1 << chan
)))
2468 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- comp
);
2470 if (var
->data
.compact
)
2473 unsigned count
= glsl_count_attribute_slots(
2476 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2477 &ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
, count
,
2478 stride
, true, true);
2480 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2481 value
, indir_index
, "");
2482 build_store_values_extended(&ctx
->ac
, ctx
->abi
->outputs
+ idx
+ chan
,
2483 count
, stride
, tmp_vec
);
2486 temp_ptr
= ctx
->abi
->outputs
[idx
+ chan
+ const_index
* stride
];
2488 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2492 case nir_var_function_temp
:
2493 for (unsigned chan
= 0; chan
< 8; chan
++) {
2494 if (!(writemask
& (1 << chan
)))
2497 value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
2499 unsigned count
= glsl_count_attribute_slots(
2502 LLVMValueRef tmp_vec
= ac_build_gather_values_extended(
2503 &ctx
->ac
, ctx
->locals
+ idx
+ chan
, count
,
2506 tmp_vec
= LLVMBuildInsertElement(ctx
->ac
.builder
, tmp_vec
,
2507 value
, indir_index
, "");
2508 build_store_values_extended(&ctx
->ac
, ctx
->locals
+ idx
+ chan
,
2511 temp_ptr
= ctx
->locals
[idx
+ chan
+ const_index
* 4];
2513 LLVMBuildStore(ctx
->ac
.builder
, value
, temp_ptr
);
2518 case nir_var_mem_global
: {
2519 int writemask
= instr
->const_index
[0];
2520 LLVMValueRef address
= get_src(ctx
, instr
->src
[0]);
2521 LLVMValueRef val
= get_src(ctx
, instr
->src
[1]);
2523 unsigned explicit_stride
= glsl_get_explicit_stride(deref
->type
);
2524 unsigned natural_stride
= type_scalar_size_bytes(deref
->type
);
2525 unsigned stride
= explicit_stride
? explicit_stride
: natural_stride
;
2526 int elem_size_bytes
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(val
)) / 8;
2527 bool split_stores
= ctx
->ac
.chip_class
== GFX6
&& elem_size_bytes
< 4;
2529 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2530 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2531 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2533 if (writemask
== (1u << ac_get_llvm_num_components(val
)) - 1 &&
2534 stride
== natural_stride
&& !split_stores
) {
2535 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(val
),
2536 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2537 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2539 val
= LLVMBuildBitCast(ctx
->ac
.builder
, val
,
2540 LLVMGetElementType(LLVMTypeOf(address
)), "");
2541 LLVMValueRef store
= LLVMBuildStore(ctx
->ac
.builder
, val
, address
);
2543 if (nir_intrinsic_access(instr
) & (ACCESS_COHERENT
| ACCESS_VOLATILE
))
2544 LLVMSetOrdering(store
, LLVMAtomicOrderingMonotonic
);
2546 LLVMTypeRef val_type
= LLVMTypeOf(val
);
2547 if (LLVMGetTypeKind(LLVMTypeOf(val
)) == LLVMVectorTypeKind
)
2548 val_type
= LLVMGetElementType(val_type
);
2550 LLVMTypeRef ptr_type
= LLVMPointerType(val_type
,
2551 LLVMGetPointerAddressSpace(LLVMTypeOf(address
)));
2552 address
= LLVMBuildBitCast(ctx
->ac
.builder
, address
, ptr_type
, "");
2553 for (unsigned chan
= 0; chan
< 4; chan
++) {
2554 if (!(writemask
& (1 << chan
)))
2557 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, chan
* stride
/ natural_stride
, 0);
2559 LLVMValueRef ptr
= ac_build_gep_ptr(&ctx
->ac
, address
, offset
);
2560 LLVMValueRef src
= ac_llvm_extract_elem(&ctx
->ac
, val
,
2562 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2563 LLVMGetElementType(LLVMTypeOf(ptr
)), "");
2564 LLVMValueRef store
= LLVMBuildStore(ctx
->ac
.builder
, src
, ptr
);
2566 if (nir_intrinsic_access(instr
) & (ACCESS_COHERENT
| ACCESS_VOLATILE
))
2567 LLVMSetOrdering(store
, LLVMAtomicOrderingMonotonic
);
2577 if (ctx
->ac
.postponed_kill
)
2578 ac_build_endif(&ctx
->ac
, 7002);
2582 visit_store_output(struct ac_nir_context
*ctx
, nir_intrinsic_instr
*instr
)
2584 if (ctx
->ac
.postponed_kill
) {
2585 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2586 ctx
->ac
.postponed_kill
, "");
2587 ac_build_ifcc(&ctx
->ac
, cond
, 7002);
2590 unsigned base
= nir_intrinsic_base(instr
);
2591 unsigned writemask
= nir_intrinsic_write_mask(instr
);
2592 unsigned component
= nir_intrinsic_component(instr
);
2593 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
2594 nir_src offset
= *nir_get_io_offset_src(instr
);
2595 LLVMValueRef indir_index
= NULL
;
2597 if (nir_src_is_const(offset
))
2598 assert(nir_src_as_uint(offset
) == 0);
2600 indir_index
= get_src(ctx
, offset
);
2602 switch (ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(src
))) {
2606 writemask
= widen_mask(writemask
, 2);
2607 src
= LLVMBuildBitCast(ctx
->ac
.builder
, src
,
2608 LLVMVectorType(ctx
->ac
.f32
, ac_get_llvm_num_components(src
) * 2),
2612 unreachable("unhandled store_output bit size");
2616 writemask
<<= component
;
2618 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
2619 nir_src
*vertex_index_src
= nir_get_io_vertex_index_src(instr
);
2620 LLVMValueRef vertex_index
=
2621 vertex_index_src
? get_src(ctx
, *vertex_index_src
) : NULL
;
2623 ctx
->abi
->store_tcs_outputs(ctx
->abi
, NULL
,
2624 vertex_index
, indir_index
,
2626 component
, base
* 4);
2630 /* No indirect indexing is allowed after this point. */
2631 assert(!indir_index
);
2633 for (unsigned chan
= 0; chan
< 8; chan
++) {
2634 if (!(writemask
& (1 << chan
)))
2637 LLVMValueRef value
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
- component
);
2638 LLVMBuildStore(ctx
->ac
.builder
, value
,
2639 ctx
->abi
->outputs
[base
* 4 + chan
]);
2642 if (ctx
->ac
.postponed_kill
)
2643 ac_build_endif(&ctx
->ac
, 7002);
2646 static int image_type_to_components_count(enum glsl_sampler_dim dim
, bool array
)
2649 case GLSL_SAMPLER_DIM_BUF
:
2651 case GLSL_SAMPLER_DIM_1D
:
2652 return array
? 2 : 1;
2653 case GLSL_SAMPLER_DIM_2D
:
2654 return array
? 3 : 2;
2655 case GLSL_SAMPLER_DIM_MS
:
2656 return array
? 4 : 3;
2657 case GLSL_SAMPLER_DIM_3D
:
2658 case GLSL_SAMPLER_DIM_CUBE
:
2660 case GLSL_SAMPLER_DIM_RECT
:
2661 case GLSL_SAMPLER_DIM_SUBPASS
:
2663 case GLSL_SAMPLER_DIM_SUBPASS_MS
:
2671 static LLVMValueRef
adjust_sample_index_using_fmask(struct ac_llvm_context
*ctx
,
2672 LLVMValueRef coord_x
, LLVMValueRef coord_y
,
2673 LLVMValueRef coord_z
,
2674 LLVMValueRef sample_index
,
2675 LLVMValueRef fmask_desc_ptr
)
2677 unsigned sample_chan
= coord_z
? 3 : 2;
2678 LLVMValueRef addr
[4] = {coord_x
, coord_y
, coord_z
};
2679 addr
[sample_chan
] = sample_index
;
2681 ac_apply_fmask_to_sample(ctx
, fmask_desc_ptr
, addr
, coord_z
!= NULL
);
2682 return addr
[sample_chan
];
2685 static nir_deref_instr
*get_image_deref(const nir_intrinsic_instr
*instr
)
2687 assert(instr
->src
[0].is_ssa
);
2688 return nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2691 static LLVMValueRef
get_image_descriptor(struct ac_nir_context
*ctx
,
2692 const nir_intrinsic_instr
*instr
,
2693 LLVMValueRef dynamic_index
,
2694 enum ac_descriptor_type desc_type
,
2697 nir_deref_instr
*deref_instr
=
2698 instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
?
2699 nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
) : NULL
;
2701 return get_sampler_desc(ctx
, deref_instr
, desc_type
, &instr
->instr
, dynamic_index
, true, write
);
2704 static void get_image_coords(struct ac_nir_context
*ctx
,
2705 const nir_intrinsic_instr
*instr
,
2706 LLVMValueRef dynamic_desc_index
,
2707 struct ac_image_args
*args
,
2708 enum glsl_sampler_dim dim
,
2711 LLVMValueRef src0
= get_src(ctx
, instr
->src
[1]);
2712 LLVMValueRef masks
[] = {
2713 LLVMConstInt(ctx
->ac
.i32
, 0, false), LLVMConstInt(ctx
->ac
.i32
, 1, false),
2714 LLVMConstInt(ctx
->ac
.i32
, 2, false), LLVMConstInt(ctx
->ac
.i32
, 3, false),
2716 LLVMValueRef sample_index
= ac_llvm_extract_elem(&ctx
->ac
, get_src(ctx
, instr
->src
[2]), 0);
2719 ASSERTED
bool add_frag_pos
= (dim
== GLSL_SAMPLER_DIM_SUBPASS
||
2720 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2721 bool is_ms
= (dim
== GLSL_SAMPLER_DIM_MS
||
2722 dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
);
2723 bool gfx9_1d
= ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
;
2724 assert(!add_frag_pos
&& "Input attachments should be lowered by this point.");
2725 count
= image_type_to_components_count(dim
, is_array
);
2727 if (is_ms
&& (instr
->intrinsic
== nir_intrinsic_image_deref_load
||
2728 instr
->intrinsic
== nir_intrinsic_bindless_image_load
)) {
2729 LLVMValueRef fmask_load_address
[3];
2731 fmask_load_address
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2732 fmask_load_address
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[1], "");
2734 fmask_load_address
[2] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[2], "");
2736 fmask_load_address
[2] = NULL
;
2738 sample_index
= adjust_sample_index_using_fmask(&ctx
->ac
,
2739 fmask_load_address
[0],
2740 fmask_load_address
[1],
2741 fmask_load_address
[2],
2743 get_sampler_desc(ctx
, nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
),
2744 AC_DESC_FMASK
, &instr
->instr
, dynamic_desc_index
, true, false));
2746 if (count
== 1 && !gfx9_1d
) {
2747 if (instr
->src
[1].ssa
->num_components
)
2748 args
->coords
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
, src0
, masks
[0], "");
2750 args
->coords
[0] = src0
;
2755 for (chan
= 0; chan
< count
; ++chan
) {
2756 args
->coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, src0
, chan
);
2761 args
->coords
[2] = args
->coords
[1];
2762 args
->coords
[1] = ctx
->ac
.i32_0
;
2764 args
->coords
[1] = ctx
->ac
.i32_0
;
2767 if (ctx
->ac
.chip_class
== GFX9
&&
2768 dim
== GLSL_SAMPLER_DIM_2D
&&
2770 /* The hw can't bind a slice of a 3D image as a 2D
2771 * image, because it ignores BASE_ARRAY if the target
2772 * is 3D. The workaround is to read BASE_ARRAY and set
2773 * it as the 3rd address operand for all 2D images.
2775 LLVMValueRef first_layer
, const5
, mask
;
2777 const5
= LLVMConstInt(ctx
->ac
.i32
, 5, 0);
2778 mask
= LLVMConstInt(ctx
->ac
.i32
, S_008F24_BASE_ARRAY(~0), 0);
2779 first_layer
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
->resource
, const5
, "");
2780 first_layer
= LLVMBuildAnd(ctx
->ac
.builder
, first_layer
, mask
, "");
2782 args
->coords
[count
] = first_layer
;
2788 args
->coords
[count
] = sample_index
;
2794 static LLVMValueRef
get_image_buffer_descriptor(struct ac_nir_context
*ctx
,
2795 const nir_intrinsic_instr
*instr
,
2796 LLVMValueRef dynamic_index
,
2797 bool write
, bool atomic
)
2799 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_BUFFER
, write
);
2800 if (ctx
->ac
.chip_class
== GFX9
&& LLVM_VERSION_MAJOR
< 9 && atomic
) {
2801 LLVMValueRef elem_count
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2802 LLVMValueRef stride
= LLVMBuildExtractElement(ctx
->ac
.builder
, rsrc
, LLVMConstInt(ctx
->ac
.i32
, 1, 0), "");
2803 stride
= LLVMBuildLShr(ctx
->ac
.builder
, stride
, LLVMConstInt(ctx
->ac
.i32
, 16, 0), "");
2805 LLVMValueRef new_elem_count
= LLVMBuildSelect(ctx
->ac
.builder
,
2806 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntUGT
, elem_count
, stride
, ""),
2807 elem_count
, stride
, "");
2809 rsrc
= LLVMBuildInsertElement(ctx
->ac
.builder
, rsrc
, new_elem_count
,
2810 LLVMConstInt(ctx
->ac
.i32
, 2, 0), "");
2815 static LLVMValueRef
enter_waterfall_image(struct ac_nir_context
*ctx
,
2816 struct waterfall_context
*wctx
,
2817 const nir_intrinsic_instr
*instr
)
2819 nir_deref_instr
*deref_instr
= NULL
;
2821 if (instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
)
2822 deref_instr
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
2824 LLVMValueRef value
= get_sampler_desc_index(ctx
, deref_instr
, &instr
->instr
, true);
2825 return enter_waterfall(ctx
, wctx
, value
, nir_intrinsic_access(instr
) & ACCESS_NON_UNIFORM
);
2828 static LLVMValueRef
visit_image_load(struct ac_nir_context
*ctx
,
2829 const nir_intrinsic_instr
*instr
,
2834 enum glsl_sampler_dim dim
;
2835 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
2838 dim
= nir_intrinsic_image_dim(instr
);
2839 is_array
= nir_intrinsic_image_array(instr
);
2841 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2842 const struct glsl_type
*type
= image_deref
->type
;
2843 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2844 dim
= glsl_get_sampler_dim(type
);
2845 access
|= var
->data
.access
;
2846 is_array
= glsl_sampler_type_is_array(type
);
2849 struct waterfall_context wctx
;
2850 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
2852 struct ac_image_args args
= {};
2854 args
.cache_policy
= get_cache_policy(ctx
, access
, false, false);
2856 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2857 unsigned mask
= nir_ssa_def_components_read(&instr
->dest
.ssa
);
2858 unsigned num_channels
= util_last_bit(mask
);
2859 LLVMValueRef rsrc
, vindex
;
2861 rsrc
= get_image_buffer_descriptor(ctx
, instr
, dynamic_index
, false, false);
2862 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
2865 assert(instr
->dest
.is_ssa
);
2866 bool can_speculate
= access
& ACCESS_CAN_REORDER
;
2867 res
= ac_build_buffer_load_format(&ctx
->ac
, rsrc
, vindex
,
2868 ctx
->ac
.i32_0
, num_channels
,
2871 instr
->dest
.ssa
.bit_size
== 16);
2872 res
= ac_build_expand_to_vec4(&ctx
->ac
, res
, num_channels
);
2874 res
= ac_trim_vector(&ctx
->ac
, res
, instr
->dest
.ssa
.num_components
);
2875 res
= ac_to_integer(&ctx
->ac
, res
);
2877 bool level_zero
= nir_src_is_const(instr
->src
[3]) && nir_src_as_uint(instr
->src
[3]) == 0;
2879 args
.opcode
= level_zero
? ac_image_load
: ac_image_load_mip
;
2880 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, false);
2881 get_image_coords(ctx
, instr
, dynamic_index
, &args
, dim
, is_array
);
2882 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2884 args
.lod
= get_src(ctx
, instr
->src
[3]);
2886 args
.attributes
= AC_FUNC_ATTR_READONLY
;
2888 assert(instr
->dest
.is_ssa
);
2889 args
.d16
= instr
->dest
.ssa
.bit_size
== 16;
2891 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
2893 return exit_waterfall(ctx
, &wctx
, res
);
2896 static void visit_image_store(struct ac_nir_context
*ctx
,
2897 const nir_intrinsic_instr
*instr
,
2900 if (ctx
->ac
.postponed_kill
) {
2901 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2902 ctx
->ac
.postponed_kill
, "");
2903 ac_build_ifcc(&ctx
->ac
, cond
, 7003);
2906 enum glsl_sampler_dim dim
;
2907 enum gl_access_qualifier access
= nir_intrinsic_access(instr
);
2911 dim
= nir_intrinsic_image_dim(instr
);
2912 is_array
= nir_intrinsic_image_array(instr
);
2914 const nir_deref_instr
*image_deref
= get_image_deref(instr
);
2915 const struct glsl_type
*type
= image_deref
->type
;
2916 const nir_variable
*var
= nir_deref_instr_get_variable(image_deref
);
2917 dim
= glsl_get_sampler_dim(type
);
2918 access
|= var
->data
.access
;
2919 is_array
= glsl_sampler_type_is_array(type
);
2922 struct waterfall_context wctx
;
2923 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
2925 bool writeonly_memory
= access
& ACCESS_NON_READABLE
;
2926 struct ac_image_args args
= {};
2928 args
.cache_policy
= get_cache_policy(ctx
, access
, true, writeonly_memory
);
2930 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
2931 LLVMValueRef rsrc
= get_image_buffer_descriptor(ctx
, instr
, dynamic_index
, true, false);
2932 LLVMValueRef src
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2933 unsigned src_channels
= ac_get_llvm_num_components(src
);
2934 LLVMValueRef vindex
;
2936 if (src_channels
== 3)
2937 src
= ac_build_expand_to_vec4(&ctx
->ac
, src
, 3);
2939 vindex
= LLVMBuildExtractElement(ctx
->ac
.builder
,
2940 get_src(ctx
, instr
->src
[1]),
2943 ac_build_buffer_store_format(&ctx
->ac
, rsrc
, src
, vindex
,
2944 ctx
->ac
.i32_0
, args
.cache_policy
);
2946 bool level_zero
= nir_src_is_const(instr
->src
[4]) && nir_src_as_uint(instr
->src
[4]) == 0;
2948 args
.opcode
= level_zero
? ac_image_store
: ac_image_store_mip
;
2949 args
.data
[0] = ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[3]));
2950 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, true);
2951 get_image_coords(ctx
, instr
, dynamic_index
, &args
, dim
, is_array
);
2952 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
2954 args
.lod
= get_src(ctx
, instr
->src
[4]);
2956 args
.d16
= ac_get_elem_bits(&ctx
->ac
, LLVMTypeOf(args
.data
[0])) == 16;
2958 ac_build_image_opcode(&ctx
->ac
, &args
);
2961 exit_waterfall(ctx
, &wctx
, NULL
);
2962 if (ctx
->ac
.postponed_kill
)
2963 ac_build_endif(&ctx
->ac
, 7003);
2966 static LLVMValueRef
visit_image_atomic(struct ac_nir_context
*ctx
,
2967 const nir_intrinsic_instr
*instr
,
2970 if (ctx
->ac
.postponed_kill
) {
2971 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
2972 ctx
->ac
.postponed_kill
, "");
2973 ac_build_ifcc(&ctx
->ac
, cond
, 7004);
2976 LLVMValueRef params
[7];
2977 int param_count
= 0;
2979 bool cmpswap
= instr
->intrinsic
== nir_intrinsic_image_deref_atomic_comp_swap
||
2980 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_comp_swap
;
2981 const char *atomic_name
;
2982 char intrinsic_name
[64];
2983 enum ac_atomic_op atomic_subop
;
2984 ASSERTED
int length
;
2986 enum glsl_sampler_dim dim
;
2989 if (instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imin
||
2990 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umin
||
2991 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_imax
||
2992 instr
->intrinsic
== nir_intrinsic_bindless_image_atomic_umax
) {
2993 ASSERTED
const GLenum format
= nir_intrinsic_format(instr
);
2994 assert(format
== GL_R32UI
|| format
== GL_R32I
);
2996 dim
= nir_intrinsic_image_dim(instr
);
2997 is_array
= nir_intrinsic_image_array(instr
);
2999 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
3000 dim
= glsl_get_sampler_dim(type
);
3001 is_array
= glsl_sampler_type_is_array(type
);
3004 struct waterfall_context wctx
;
3005 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
3007 switch (instr
->intrinsic
) {
3008 case nir_intrinsic_bindless_image_atomic_add
:
3009 case nir_intrinsic_image_deref_atomic_add
:
3010 atomic_name
= "add";
3011 atomic_subop
= ac_atomic_add
;
3013 case nir_intrinsic_bindless_image_atomic_imin
:
3014 case nir_intrinsic_image_deref_atomic_imin
:
3015 atomic_name
= "smin";
3016 atomic_subop
= ac_atomic_smin
;
3018 case nir_intrinsic_bindless_image_atomic_umin
:
3019 case nir_intrinsic_image_deref_atomic_umin
:
3020 atomic_name
= "umin";
3021 atomic_subop
= ac_atomic_umin
;
3023 case nir_intrinsic_bindless_image_atomic_imax
:
3024 case nir_intrinsic_image_deref_atomic_imax
:
3025 atomic_name
= "smax";
3026 atomic_subop
= ac_atomic_smax
;
3028 case nir_intrinsic_bindless_image_atomic_umax
:
3029 case nir_intrinsic_image_deref_atomic_umax
:
3030 atomic_name
= "umax";
3031 atomic_subop
= ac_atomic_umax
;
3033 case nir_intrinsic_bindless_image_atomic_and
:
3034 case nir_intrinsic_image_deref_atomic_and
:
3035 atomic_name
= "and";
3036 atomic_subop
= ac_atomic_and
;
3038 case nir_intrinsic_bindless_image_atomic_or
:
3039 case nir_intrinsic_image_deref_atomic_or
:
3041 atomic_subop
= ac_atomic_or
;
3043 case nir_intrinsic_bindless_image_atomic_xor
:
3044 case nir_intrinsic_image_deref_atomic_xor
:
3045 atomic_name
= "xor";
3046 atomic_subop
= ac_atomic_xor
;
3048 case nir_intrinsic_bindless_image_atomic_exchange
:
3049 case nir_intrinsic_image_deref_atomic_exchange
:
3050 atomic_name
= "swap";
3051 atomic_subop
= ac_atomic_swap
;
3053 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3054 case nir_intrinsic_image_deref_atomic_comp_swap
:
3055 atomic_name
= "cmpswap";
3056 atomic_subop
= 0; /* not used */
3058 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
3059 case nir_intrinsic_image_deref_atomic_inc_wrap
: {
3060 atomic_name
= "inc";
3061 atomic_subop
= ac_atomic_inc_wrap
;
3064 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
3065 case nir_intrinsic_image_deref_atomic_dec_wrap
:
3066 atomic_name
= "dec";
3067 atomic_subop
= ac_atomic_dec_wrap
;
3074 params
[param_count
++] = get_src(ctx
, instr
->src
[4]);
3075 params
[param_count
++] = get_src(ctx
, instr
->src
[3]);
3077 LLVMValueRef result
;
3078 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
3079 params
[param_count
++] = get_image_buffer_descriptor(ctx
, instr
, dynamic_index
, true, true);
3080 params
[param_count
++] = LLVMBuildExtractElement(ctx
->ac
.builder
, get_src(ctx
, instr
->src
[1]),
3081 ctx
->ac
.i32_0
, ""); /* vindex */
3082 params
[param_count
++] = ctx
->ac
.i32_0
; /* voffset */
3083 if (LLVM_VERSION_MAJOR
>= 9) {
3084 /* XXX: The new raw/struct atomic intrinsics are buggy
3085 * with LLVM 8, see r358579.
3087 params
[param_count
++] = ctx
->ac
.i32_0
; /* soffset */
3088 params
[param_count
++] = ctx
->ac
.i32_0
; /* slc */
3090 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
3091 "llvm.amdgcn.struct.buffer.atomic.%s.i32", atomic_name
);
3093 params
[param_count
++] = ctx
->ac
.i1false
; /* slc */
3095 length
= snprintf(intrinsic_name
, sizeof(intrinsic_name
),
3096 "llvm.amdgcn.buffer.atomic.%s", atomic_name
);
3099 assert(length
< sizeof(intrinsic_name
));
3100 result
= ac_build_intrinsic(&ctx
->ac
, intrinsic_name
, ctx
->ac
.i32
,
3101 params
, param_count
, 0);
3103 struct ac_image_args args
= {};
3104 args
.opcode
= cmpswap
? ac_image_atomic_cmpswap
: ac_image_atomic
;
3105 args
.atomic
= atomic_subop
;
3106 args
.data
[0] = params
[0];
3108 args
.data
[1] = params
[1];
3109 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, true);
3110 get_image_coords(ctx
, instr
, dynamic_index
, &args
, dim
, is_array
);
3111 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
3113 result
= ac_build_image_opcode(&ctx
->ac
, &args
);
3116 result
= exit_waterfall(ctx
, &wctx
, result
);
3117 if (ctx
->ac
.postponed_kill
)
3118 ac_build_endif(&ctx
->ac
, 7004);
3122 static LLVMValueRef
visit_image_samples(struct ac_nir_context
*ctx
,
3123 nir_intrinsic_instr
*instr
)
3125 struct waterfall_context wctx
;
3126 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
3127 LLVMValueRef rsrc
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, false);
3129 LLVMValueRef ret
= ac_build_image_get_sample_count(&ctx
->ac
, rsrc
);
3131 return exit_waterfall(ctx
, &wctx
, ret
);
3134 static LLVMValueRef
visit_image_size(struct ac_nir_context
*ctx
,
3135 const nir_intrinsic_instr
*instr
,
3140 enum glsl_sampler_dim dim
;
3143 dim
= nir_intrinsic_image_dim(instr
);
3144 is_array
= nir_intrinsic_image_array(instr
);
3146 const struct glsl_type
*type
= get_image_deref(instr
)->type
;
3147 dim
= glsl_get_sampler_dim(type
);
3148 is_array
= glsl_sampler_type_is_array(type
);
3151 struct waterfall_context wctx
;
3152 LLVMValueRef dynamic_index
= enter_waterfall_image(ctx
, &wctx
, instr
);
3154 if (dim
== GLSL_SAMPLER_DIM_BUF
) {
3155 res
= get_buffer_size(ctx
, get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_BUFFER
, false), true);
3158 struct ac_image_args args
= { 0 };
3160 args
.dim
= ac_get_image_dim(ctx
->ac
.chip_class
, dim
, is_array
);
3162 args
.resource
= get_image_descriptor(ctx
, instr
, dynamic_index
, AC_DESC_IMAGE
, false);
3163 args
.opcode
= ac_image_get_resinfo
;
3164 assert(nir_src_as_uint(instr
->src
[1]) == 0);
3165 args
.lod
= ctx
->ac
.i32_0
;
3166 args
.attributes
= AC_FUNC_ATTR_READNONE
;
3168 res
= ac_build_image_opcode(&ctx
->ac
, &args
);
3170 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
3172 if (dim
== GLSL_SAMPLER_DIM_CUBE
&& is_array
) {
3173 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
3174 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
3175 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
3176 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, z
, two
, "");
3179 if (ctx
->ac
.chip_class
== GFX9
&& dim
== GLSL_SAMPLER_DIM_1D
&& is_array
) {
3180 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
, two
, "");
3181 res
= LLVMBuildInsertElement(ctx
->ac
.builder
, res
, layers
,
3185 return exit_waterfall(ctx
, &wctx
, res
);
3188 static void emit_membar(struct ac_llvm_context
*ac
,
3189 const nir_intrinsic_instr
*instr
)
3191 unsigned wait_flags
= 0;
3193 switch (instr
->intrinsic
) {
3194 case nir_intrinsic_memory_barrier
:
3195 case nir_intrinsic_group_memory_barrier
:
3196 wait_flags
= AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
3198 case nir_intrinsic_memory_barrier_buffer
:
3199 case nir_intrinsic_memory_barrier_image
:
3200 wait_flags
= AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
3202 case nir_intrinsic_memory_barrier_shared
:
3203 wait_flags
= AC_WAIT_LGKM
;
3209 ac_build_waitcnt(ac
, wait_flags
);
3212 void ac_emit_barrier(struct ac_llvm_context
*ac
, gl_shader_stage stage
)
3214 /* GFX6 only (thanks to a hw bug workaround):
3215 * The real barrier instruction isn’t needed, because an entire patch
3216 * always fits into a single wave.
3218 if (ac
->chip_class
== GFX6
&& stage
== MESA_SHADER_TESS_CTRL
) {
3219 ac_build_waitcnt(ac
, AC_WAIT_LGKM
| AC_WAIT_VLOAD
| AC_WAIT_VSTORE
);
3222 ac_build_s_barrier(ac
);
3225 static void emit_discard(struct ac_nir_context
*ctx
,
3226 const nir_intrinsic_instr
*instr
)
3230 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
3231 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
3232 get_src(ctx
, instr
->src
[0]),
3235 assert(instr
->intrinsic
== nir_intrinsic_discard
);
3236 cond
= ctx
->ac
.i1false
;
3239 ac_build_kill_if_false(&ctx
->ac
, cond
);
3242 static void emit_demote(struct ac_nir_context
*ctx
,
3243 const nir_intrinsic_instr
*instr
)
3247 if (instr
->intrinsic
== nir_intrinsic_demote_if
) {
3248 cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
3249 get_src(ctx
, instr
->src
[0]),
3252 assert(instr
->intrinsic
== nir_intrinsic_demote
);
3253 cond
= ctx
->ac
.i1false
;
3256 /* Kill immediately while maintaining WQM. */
3257 ac_build_kill_if_false(&ctx
->ac
, ac_build_wqm_vote(&ctx
->ac
, cond
));
3259 LLVMValueRef mask
= LLVMBuildLoad(ctx
->ac
.builder
, ctx
->ac
.postponed_kill
, "");
3260 mask
= LLVMBuildAnd(ctx
->ac
.builder
, mask
, cond
, "");
3261 LLVMBuildStore(ctx
->ac
.builder
, mask
, ctx
->ac
.postponed_kill
);
3266 visit_load_local_invocation_index(struct ac_nir_context
*ctx
)
3268 LLVMValueRef result
;
3269 LLVMValueRef thread_id
= ac_get_thread_id(&ctx
->ac
);
3270 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3271 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3272 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
3274 if (ctx
->ac
.wave_size
== 32)
3275 result
= LLVMBuildLShr(ctx
->ac
.builder
, result
,
3276 LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
3278 return LLVMBuildAdd(ctx
->ac
.builder
, result
, thread_id
, "");
3282 visit_load_subgroup_id(struct ac_nir_context
*ctx
)
3284 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
3285 LLVMValueRef result
;
3286 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3287 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3288 LLVMConstInt(ctx
->ac
.i32
, 0xfc0, false), "");
3289 return LLVMBuildLShr(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 6, false), "");
3291 return LLVMConstInt(ctx
->ac
.i32
, 0, false);
3296 visit_load_num_subgroups(struct ac_nir_context
*ctx
)
3298 if (ctx
->stage
== MESA_SHADER_COMPUTE
) {
3299 return LLVMBuildAnd(ctx
->ac
.builder
,
3300 ac_get_arg(&ctx
->ac
, ctx
->args
->tg_size
),
3301 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
3303 return LLVMConstInt(ctx
->ac
.i32
, 1, false);
3308 visit_first_invocation(struct ac_nir_context
*ctx
)
3310 LLVMValueRef active_set
= ac_build_ballot(&ctx
->ac
, ctx
->ac
.i32_1
);
3311 const char *intr
= ctx
->ac
.wave_size
== 32 ? "llvm.cttz.i32" : "llvm.cttz.i64";
3313 /* The second argument is whether cttz(0) should be defined, but we do not care. */
3314 LLVMValueRef args
[] = {active_set
, ctx
->ac
.i1false
};
3315 LLVMValueRef result
= ac_build_intrinsic(&ctx
->ac
, intr
,
3316 ctx
->ac
.iN_wavemask
, args
, 2,
3317 AC_FUNC_ATTR_NOUNWIND
|
3318 AC_FUNC_ATTR_READNONE
);
3320 return LLVMBuildTrunc(ctx
->ac
.builder
, result
, ctx
->ac
.i32
, "");
3324 visit_load_shared(struct ac_nir_context
*ctx
,
3325 const nir_intrinsic_instr
*instr
)
3327 LLVMValueRef values
[4], derived_ptr
, index
, ret
;
3329 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0],
3330 instr
->dest
.ssa
.bit_size
);
3332 for (int chan
= 0; chan
< instr
->num_components
; chan
++) {
3333 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
3334 derived_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &index
, 1, "");
3335 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
, derived_ptr
, "");
3338 ret
= ac_build_gather_values(&ctx
->ac
, values
, instr
->num_components
);
3339 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, get_def_type(ctx
, &instr
->dest
.ssa
), "");
3343 visit_store_shared(struct ac_nir_context
*ctx
,
3344 const nir_intrinsic_instr
*instr
)
3346 LLVMValueRef derived_ptr
, data
,index
;
3347 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3349 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[1],
3350 instr
->src
[0].ssa
->bit_size
);
3351 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
3353 int writemask
= nir_intrinsic_write_mask(instr
);
3354 for (int chan
= 0; chan
< 4; chan
++) {
3355 if (!(writemask
& (1 << chan
))) {
3358 data
= ac_llvm_extract_elem(&ctx
->ac
, src
, chan
);
3359 index
= LLVMConstInt(ctx
->ac
.i32
, chan
, 0);
3360 derived_ptr
= LLVMBuildGEP(builder
, ptr
, &index
, 1, "");
3361 LLVMBuildStore(builder
, data
, derived_ptr
);
3365 static LLVMValueRef
visit_var_atomic(struct ac_nir_context
*ctx
,
3366 const nir_intrinsic_instr
*instr
,
3367 LLVMValueRef ptr
, int src_idx
)
3369 if (ctx
->ac
.postponed_kill
) {
3370 LLVMValueRef cond
= LLVMBuildLoad(ctx
->ac
.builder
,
3371 ctx
->ac
.postponed_kill
, "");
3372 ac_build_ifcc(&ctx
->ac
, cond
, 7005);
3375 LLVMValueRef result
;
3376 LLVMValueRef src
= get_src(ctx
, instr
->src
[src_idx
]);
3378 const char *sync_scope
= LLVM_VERSION_MAJOR
>= 9 ? "workgroup-one-as" : "workgroup";
3380 if (instr
->src
[0].ssa
->parent_instr
->type
== nir_instr_type_deref
) {
3381 nir_deref_instr
*deref
= nir_instr_as_deref(instr
->src
[0].ssa
->parent_instr
);
3382 if (deref
->mode
== nir_var_mem_global
) {
3383 /* use "singlethread" sync scope to implement relaxed ordering */
3384 sync_scope
= LLVM_VERSION_MAJOR
>= 9 ? "singlethread-one-as" : "singlethread";
3386 LLVMTypeRef ptr_type
= LLVMPointerType(LLVMTypeOf(src
), LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
)));
3387 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ptr_type
, "");
3391 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_comp_swap
||
3392 instr
->intrinsic
== nir_intrinsic_deref_atomic_comp_swap
) {
3393 LLVMValueRef src1
= get_src(ctx
, instr
->src
[src_idx
+ 1]);
3394 result
= ac_build_atomic_cmp_xchg(&ctx
->ac
, ptr
, src
, src1
, sync_scope
);
3395 result
= LLVMBuildExtractValue(ctx
->ac
.builder
, result
, 0, "");
3397 LLVMAtomicRMWBinOp op
;
3398 switch (instr
->intrinsic
) {
3399 case nir_intrinsic_shared_atomic_add
:
3400 case nir_intrinsic_deref_atomic_add
:
3401 op
= LLVMAtomicRMWBinOpAdd
;
3403 case nir_intrinsic_shared_atomic_umin
:
3404 case nir_intrinsic_deref_atomic_umin
:
3405 op
= LLVMAtomicRMWBinOpUMin
;
3407 case nir_intrinsic_shared_atomic_umax
:
3408 case nir_intrinsic_deref_atomic_umax
:
3409 op
= LLVMAtomicRMWBinOpUMax
;
3411 case nir_intrinsic_shared_atomic_imin
:
3412 case nir_intrinsic_deref_atomic_imin
:
3413 op
= LLVMAtomicRMWBinOpMin
;
3415 case nir_intrinsic_shared_atomic_imax
:
3416 case nir_intrinsic_deref_atomic_imax
:
3417 op
= LLVMAtomicRMWBinOpMax
;
3419 case nir_intrinsic_shared_atomic_and
:
3420 case nir_intrinsic_deref_atomic_and
:
3421 op
= LLVMAtomicRMWBinOpAnd
;
3423 case nir_intrinsic_shared_atomic_or
:
3424 case nir_intrinsic_deref_atomic_or
:
3425 op
= LLVMAtomicRMWBinOpOr
;
3427 case nir_intrinsic_shared_atomic_xor
:
3428 case nir_intrinsic_deref_atomic_xor
:
3429 op
= LLVMAtomicRMWBinOpXor
;
3431 case nir_intrinsic_shared_atomic_exchange
:
3432 case nir_intrinsic_deref_atomic_exchange
:
3433 op
= LLVMAtomicRMWBinOpXchg
;
3435 #if LLVM_VERSION_MAJOR >= 10
3436 case nir_intrinsic_shared_atomic_fadd
:
3437 case nir_intrinsic_deref_atomic_fadd
:
3438 op
= LLVMAtomicRMWBinOpFAdd
;
3447 if (instr
->intrinsic
== nir_intrinsic_shared_atomic_fadd
||
3448 instr
->intrinsic
== nir_intrinsic_deref_atomic_fadd
) {
3449 val
= ac_to_float(&ctx
->ac
, src
);
3451 val
= ac_to_integer(&ctx
->ac
, src
);
3454 result
= ac_build_atomic_rmw(&ctx
->ac
, op
, ptr
, val
, sync_scope
);
3457 if (ctx
->ac
.postponed_kill
)
3458 ac_build_endif(&ctx
->ac
, 7005);
3462 static LLVMValueRef
load_sample_pos(struct ac_nir_context
*ctx
)
3464 LLVMValueRef values
[2];
3465 LLVMValueRef pos
[2];
3467 pos
[0] = ac_to_float(&ctx
->ac
,
3468 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[0]));
3469 pos
[1] = ac_to_float(&ctx
->ac
,
3470 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[1]));
3472 values
[0] = ac_build_fract(&ctx
->ac
, pos
[0], 32);
3473 values
[1] = ac_build_fract(&ctx
->ac
, pos
[1], 32);
3474 return ac_build_gather_values(&ctx
->ac
, values
, 2);
3477 static LLVMValueRef
lookup_interp_param(struct ac_nir_context
*ctx
,
3478 enum glsl_interp_mode interp
, unsigned location
)
3481 case INTERP_MODE_FLAT
:
3484 case INTERP_MODE_SMOOTH
:
3485 case INTERP_MODE_NONE
:
3486 if (location
== INTERP_CENTER
)
3487 return ac_get_arg(&ctx
->ac
, ctx
->args
->persp_center
);
3488 else if (location
== INTERP_CENTROID
)
3489 return ctx
->abi
->persp_centroid
;
3490 else if (location
== INTERP_SAMPLE
)
3491 return ac_get_arg(&ctx
->ac
, ctx
->args
->persp_sample
);
3493 case INTERP_MODE_NOPERSPECTIVE
:
3494 if (location
== INTERP_CENTER
)
3495 return ac_get_arg(&ctx
->ac
, ctx
->args
->linear_center
);
3496 else if (location
== INTERP_CENTROID
)
3497 return ctx
->abi
->linear_centroid
;
3498 else if (location
== INTERP_SAMPLE
)
3499 return ac_get_arg(&ctx
->ac
, ctx
->args
->linear_sample
);
3505 static LLVMValueRef
barycentric_center(struct ac_nir_context
*ctx
,
3508 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3509 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3512 static LLVMValueRef
barycentric_offset(struct ac_nir_context
*ctx
,
3514 LLVMValueRef offset
)
3516 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTER
);
3517 LLVMValueRef src_c0
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_0
, ""));
3518 LLVMValueRef src_c1
= ac_to_float(&ctx
->ac
, LLVMBuildExtractElement(ctx
->ac
.builder
, offset
, ctx
->ac
.i32_1
, ""));
3520 LLVMValueRef ij_out
[2];
3521 LLVMValueRef ddxy_out
= ac_build_ddxy_interp(&ctx
->ac
, interp_param
);
3524 * take the I then J parameters, and the DDX/Y for it, and
3525 * calculate the IJ inputs for the interpolator.
3526 * temp1 = ddx * offset/sample.x + I;
3527 * interp_param.I = ddy * offset/sample.y + temp1;
3528 * temp1 = ddx * offset/sample.x + J;
3529 * interp_param.J = ddy * offset/sample.y + temp1;
3531 for (unsigned i
= 0; i
< 2; i
++) {
3532 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->ac
.i32
, i
, false);
3533 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->ac
.i32
, i
+ 2, false);
3534 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3535 ddxy_out
, ix_ll
, "");
3536 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3537 ddxy_out
, iy_ll
, "");
3538 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3539 interp_param
, ix_ll
, "");
3540 LLVMValueRef temp1
, temp2
;
3542 interp_el
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_el
,
3545 temp1
= ac_build_fmad(&ctx
->ac
, ddx_el
, src_c0
, interp_el
);
3546 temp2
= ac_build_fmad(&ctx
->ac
, ddy_el
, src_c1
, temp1
);
3548 ij_out
[i
] = LLVMBuildBitCast(ctx
->ac
.builder
,
3549 temp2
, ctx
->ac
.i32
, "");
3551 interp_param
= ac_build_gather_values(&ctx
->ac
, ij_out
, 2);
3552 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3555 static LLVMValueRef
barycentric_centroid(struct ac_nir_context
*ctx
,
3558 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_CENTROID
);
3559 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3562 static LLVMValueRef
barycentric_at_sample(struct ac_nir_context
*ctx
,
3564 LLVMValueRef sample_id
)
3566 if (ctx
->abi
->interp_at_sample_force_center
)
3567 return barycentric_center(ctx
, mode
);
3569 LLVMValueRef halfval
= LLVMConstReal(ctx
->ac
.f32
, 0.5f
);
3571 /* fetch sample ID */
3572 LLVMValueRef sample_pos
= ctx
->abi
->load_sample_position(ctx
->abi
, sample_id
);
3574 LLVMValueRef src_c0
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_0
, "");
3575 src_c0
= LLVMBuildFSub(ctx
->ac
.builder
, src_c0
, halfval
, "");
3576 LLVMValueRef src_c1
= LLVMBuildExtractElement(ctx
->ac
.builder
, sample_pos
, ctx
->ac
.i32_1
, "");
3577 src_c1
= LLVMBuildFSub(ctx
->ac
.builder
, src_c1
, halfval
, "");
3578 LLVMValueRef coords
[] = { src_c0
, src_c1
};
3579 LLVMValueRef offset
= ac_build_gather_values(&ctx
->ac
, coords
, 2);
3581 return barycentric_offset(ctx
, mode
, offset
);
3585 static LLVMValueRef
barycentric_sample(struct ac_nir_context
*ctx
,
3588 LLVMValueRef interp_param
= lookup_interp_param(ctx
, mode
, INTERP_SAMPLE
);
3589 return LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
, ctx
->ac
.v2i32
, "");
3592 static LLVMValueRef
barycentric_model(struct ac_nir_context
*ctx
)
3594 return LLVMBuildBitCast(ctx
->ac
.builder
,
3595 ac_get_arg(&ctx
->ac
, ctx
->args
->pull_model
),
3599 static LLVMValueRef
load_interpolated_input(struct ac_nir_context
*ctx
,
3600 LLVMValueRef interp_param
,
3601 unsigned index
, unsigned comp_start
,
3602 unsigned num_components
,
3605 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, index
, false);
3606 LLVMValueRef interp_param_f
;
3608 interp_param_f
= LLVMBuildBitCast(ctx
->ac
.builder
,
3609 interp_param
, ctx
->ac
.v2f32
, "");
3610 LLVMValueRef i
= LLVMBuildExtractElement(
3611 ctx
->ac
.builder
, interp_param_f
, ctx
->ac
.i32_0
, "");
3612 LLVMValueRef j
= LLVMBuildExtractElement(
3613 ctx
->ac
.builder
, interp_param_f
, ctx
->ac
.i32_1
, "");
3615 /* Workaround for issue 2647: kill threads with infinite interpolation coeffs */
3616 if (ctx
->verified_interp
&&
3617 !_mesa_hash_table_search(ctx
->verified_interp
, interp_param
)) {
3618 LLVMValueRef args
[2];
3620 args
[1] = LLVMConstInt(ctx
->ac
.i32
, S_NAN
| Q_NAN
| N_INFINITY
| P_INFINITY
, false);
3621 LLVMValueRef cond
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.class.f32", ctx
->ac
.i1
,
3622 args
, 2, AC_FUNC_ATTR_READNONE
);
3623 ac_build_kill_if_false(&ctx
->ac
, LLVMBuildNot(ctx
->ac
.builder
, cond
, ""));
3624 _mesa_hash_table_insert(ctx
->verified_interp
, interp_param
, interp_param
);
3627 LLVMValueRef values
[4];
3628 assert(bitsize
== 16 || bitsize
== 32);
3629 for (unsigned comp
= 0; comp
< num_components
; comp
++) {
3630 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, comp_start
+ comp
, false);
3631 if (bitsize
== 16) {
3632 values
[comp
] = ac_build_fs_interp_f16(&ctx
->ac
, llvm_chan
, attr_number
,
3633 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
), i
, j
);
3635 values
[comp
] = ac_build_fs_interp(&ctx
->ac
, llvm_chan
, attr_number
,
3636 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
), i
, j
);
3640 return ac_to_integer(&ctx
->ac
, ac_build_gather_values(&ctx
->ac
, values
, num_components
));
3643 static LLVMValueRef
visit_load(struct ac_nir_context
*ctx
,
3644 nir_intrinsic_instr
*instr
, bool is_output
)
3646 LLVMValueRef values
[8];
3647 LLVMTypeRef dest_type
= get_def_type(ctx
, &instr
->dest
.ssa
);
3648 LLVMTypeRef component_type
;
3649 unsigned base
= nir_intrinsic_base(instr
);
3650 unsigned component
= nir_intrinsic_component(instr
);
3651 unsigned count
= instr
->dest
.ssa
.num_components
*
3652 (instr
->dest
.ssa
.bit_size
== 64 ? 2 : 1);
3653 nir_src
*vertex_index_src
= nir_get_io_vertex_index_src(instr
);
3654 LLVMValueRef vertex_index
=
3655 vertex_index_src
? get_src(ctx
, *vertex_index_src
) : NULL
;
3656 nir_src offset
= *nir_get_io_offset_src(instr
);
3657 LLVMValueRef indir_index
= NULL
;
3659 if (LLVMGetTypeKind(dest_type
) == LLVMVectorTypeKind
)
3660 component_type
= LLVMGetElementType(dest_type
);
3662 component_type
= dest_type
;
3664 if (nir_src_is_const(offset
))
3665 assert(nir_src_as_uint(offset
) == 0);
3667 indir_index
= get_src(ctx
, offset
);
3669 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
||
3670 (ctx
->stage
== MESA_SHADER_TESS_EVAL
&& !is_output
)) {
3671 LLVMValueRef result
=
3672 ctx
->abi
->load_tess_varyings(ctx
->abi
, component_type
,
3673 vertex_index
, indir_index
,
3676 instr
->num_components
,
3677 false, false, !is_output
);
3678 if (instr
->dest
.ssa
.bit_size
== 16) {
3679 result
= ac_to_integer(&ctx
->ac
, result
);
3680 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, dest_type
, "");
3682 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
3685 /* No indirect indexing is allowed after this point. */
3686 assert(!indir_index
);
3688 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3689 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
3690 assert(nir_src_is_const(*vertex_index_src
));
3692 return ctx
->abi
->load_inputs(ctx
->abi
, 0, base
* 4, component
,
3693 instr
->num_components
,
3694 nir_src_as_uint(*vertex_index_src
),
3698 if (ctx
->stage
== MESA_SHADER_FRAGMENT
&& is_output
&&
3699 nir_intrinsic_io_semantics(instr
).fb_fetch_output
)
3700 return ctx
->abi
->emit_fbfetch(ctx
->abi
);
3702 /* Other non-fragment cases have inputs and outputs in temporaries. */
3703 if (ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
3704 for (unsigned chan
= component
; chan
< count
+ component
; chan
++) {
3706 values
[chan
] = LLVMBuildLoad(ctx
->ac
.builder
,
3707 ctx
->abi
->outputs
[base
* 4 + chan
], "");
3709 values
[chan
] = ctx
->abi
->inputs
[base
* 4 + chan
];
3711 values
[chan
] = LLVMGetUndef(ctx
->ac
.i32
);
3714 LLVMValueRef result
= ac_build_varying_gather_values(&ctx
->ac
, values
, count
, component
);
3715 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
3718 /* Fragment shader inputs. */
3719 unsigned vertex_id
= 2; /* P0 */
3721 if (instr
->intrinsic
== nir_intrinsic_load_input_vertex
) {
3722 nir_const_value
*src0
= nir_src_as_const_value(instr
->src
[0]);
3724 switch (src0
[0].i32
) {
3735 unreachable("Invalid vertex index");
3739 LLVMValueRef attr_number
= LLVMConstInt(ctx
->ac
.i32
, base
, false);
3741 for (unsigned chan
= 0; chan
< count
; chan
++) {
3742 if (component
+ chan
> 4)
3743 attr_number
= LLVMConstInt(ctx
->ac
.i32
, base
+ 1, false);
3744 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->ac
.i32
, (component
+ chan
) % 4, false);
3745 values
[chan
] = ac_build_fs_interp_mov(&ctx
->ac
,
3746 LLVMConstInt(ctx
->ac
.i32
, vertex_id
, false),
3749 ac_get_arg(&ctx
->ac
, ctx
->args
->prim_mask
));
3750 values
[chan
] = LLVMBuildBitCast(ctx
->ac
.builder
, values
[chan
], ctx
->ac
.i32
, "");
3751 values
[chan
] = LLVMBuildTruncOrBitCast(ctx
->ac
.builder
, values
[chan
],
3752 instr
->dest
.ssa
.bit_size
== 16 ? ctx
->ac
.i16
3756 LLVMValueRef result
= ac_build_gather_values(&ctx
->ac
, values
, count
);
3757 return LLVMBuildBitCast(ctx
->ac
.builder
, result
, dest_type
, "");
3760 static void visit_intrinsic(struct ac_nir_context
*ctx
,
3761 nir_intrinsic_instr
*instr
)
3763 LLVMValueRef result
= NULL
;
3765 switch (instr
->intrinsic
) {
3766 case nir_intrinsic_ballot
:
3767 result
= ac_build_ballot(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
3768 if (ctx
->ac
.ballot_mask_bits
> ctx
->ac
.wave_size
)
3769 result
= LLVMBuildZExt(ctx
->ac
.builder
, result
, ctx
->ac
.iN_ballotmask
, "");
3771 case nir_intrinsic_read_invocation
:
3772 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
3773 get_src(ctx
, instr
->src
[1]));
3775 case nir_intrinsic_read_first_invocation
:
3776 result
= ac_build_readlane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), NULL
);
3778 case nir_intrinsic_load_subgroup_invocation
:
3779 result
= ac_get_thread_id(&ctx
->ac
);
3781 case nir_intrinsic_load_work_group_id
: {
3782 LLVMValueRef values
[3];
3784 for (int i
= 0; i
< 3; i
++) {
3785 values
[i
] = ctx
->args
->workgroup_ids
[i
].used
?
3786 ac_get_arg(&ctx
->ac
, ctx
->args
->workgroup_ids
[i
]) : ctx
->ac
.i32_0
;
3789 result
= ac_build_gather_values(&ctx
->ac
, values
, 3);
3792 case nir_intrinsic_load_base_vertex
:
3793 case nir_intrinsic_load_first_vertex
:
3794 result
= ctx
->abi
->load_base_vertex(ctx
->abi
);
3796 case nir_intrinsic_load_local_group_size
:
3797 result
= ctx
->abi
->load_local_group_size(ctx
->abi
);
3799 case nir_intrinsic_load_vertex_id
:
3800 result
= LLVMBuildAdd(ctx
->ac
.builder
,
3801 ac_get_arg(&ctx
->ac
, ctx
->args
->vertex_id
),
3802 ac_get_arg(&ctx
->ac
, ctx
->args
->base_vertex
), "");
3804 case nir_intrinsic_load_vertex_id_zero_base
: {
3805 result
= ctx
->abi
->vertex_id
;
3808 case nir_intrinsic_load_local_invocation_id
: {
3809 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->local_invocation_ids
);
3812 case nir_intrinsic_load_base_instance
:
3813 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->start_instance
);
3815 case nir_intrinsic_load_draw_id
:
3816 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->draw_id
);
3818 case nir_intrinsic_load_view_index
:
3819 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->view_index
);
3821 case nir_intrinsic_load_invocation_id
:
3822 if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3823 result
= ac_unpack_param(&ctx
->ac
,
3824 ac_get_arg(&ctx
->ac
, ctx
->args
->tcs_rel_ids
),
3827 if (ctx
->ac
.chip_class
>= GFX10
) {
3828 result
= LLVMBuildAnd(ctx
->ac
.builder
,
3829 ac_get_arg(&ctx
->ac
, ctx
->args
->gs_invocation_id
),
3830 LLVMConstInt(ctx
->ac
.i32
, 127, 0), "");
3832 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->gs_invocation_id
);
3836 case nir_intrinsic_load_primitive_id
:
3837 if (ctx
->stage
== MESA_SHADER_GEOMETRY
) {
3838 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->gs_prim_id
);
3839 } else if (ctx
->stage
== MESA_SHADER_TESS_CTRL
) {
3840 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->tcs_patch_id
);
3841 } else if (ctx
->stage
== MESA_SHADER_TESS_EVAL
) {
3842 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->tes_patch_id
);
3844 fprintf(stderr
, "Unknown primitive id intrinsic: %d", ctx
->stage
);
3846 case nir_intrinsic_load_sample_id
:
3847 result
= ac_unpack_param(&ctx
->ac
,
3848 ac_get_arg(&ctx
->ac
, ctx
->args
->ancillary
),
3851 case nir_intrinsic_load_sample_pos
:
3852 result
= load_sample_pos(ctx
);
3854 case nir_intrinsic_load_sample_mask_in
:
3855 result
= ctx
->abi
->load_sample_mask_in(ctx
->abi
);
3857 case nir_intrinsic_load_frag_coord
: {
3858 LLVMValueRef values
[4] = {
3859 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[0]),
3860 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[1]),
3861 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[2]),
3862 ac_build_fdiv(&ctx
->ac
, ctx
->ac
.f32_1
,
3863 ac_get_arg(&ctx
->ac
, ctx
->args
->frag_pos
[3]))
3865 result
= ac_to_integer(&ctx
->ac
,
3866 ac_build_gather_values(&ctx
->ac
, values
, 4));
3869 case nir_intrinsic_load_layer_id
:
3870 result
= ctx
->abi
->inputs
[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER
, 0)];
3872 case nir_intrinsic_load_front_face
:
3873 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->front_face
);
3875 case nir_intrinsic_load_helper_invocation
:
3876 result
= ac_build_load_helper_invocation(&ctx
->ac
);
3878 case nir_intrinsic_is_helper_invocation
:
3879 result
= ac_build_is_helper_invocation(&ctx
->ac
);
3881 case nir_intrinsic_load_color0
:
3882 result
= ctx
->abi
->color0
;
3884 case nir_intrinsic_load_color1
:
3885 result
= ctx
->abi
->color1
;
3887 case nir_intrinsic_load_user_data_amd
:
3888 assert(LLVMTypeOf(ctx
->abi
->user_data
) == ctx
->ac
.v4i32
);
3889 result
= ctx
->abi
->user_data
;
3891 case nir_intrinsic_load_instance_id
:
3892 result
= ctx
->abi
->instance_id
;
3894 case nir_intrinsic_load_num_work_groups
:
3895 result
= ac_get_arg(&ctx
->ac
, ctx
->args
->num_work_groups
);
3897 case nir_intrinsic_load_local_invocation_index
:
3898 result
= visit_load_local_invocation_index(ctx
);
3900 case nir_intrinsic_load_subgroup_id
:
3901 result
= visit_load_subgroup_id(ctx
);
3903 case nir_intrinsic_load_num_subgroups
:
3904 result
= visit_load_num_subgroups(ctx
);
3906 case nir_intrinsic_first_invocation
:
3907 result
= visit_first_invocation(ctx
);
3909 case nir_intrinsic_load_push_constant
:
3910 result
= visit_load_push_constant(ctx
, instr
);
3912 case nir_intrinsic_vulkan_resource_index
: {
3913 LLVMValueRef index
= get_src(ctx
, instr
->src
[0]);
3914 unsigned desc_set
= nir_intrinsic_desc_set(instr
);
3915 unsigned binding
= nir_intrinsic_binding(instr
);
3917 result
= ctx
->abi
->load_resource(ctx
->abi
, index
, desc_set
,
3921 case nir_intrinsic_vulkan_resource_reindex
:
3922 result
= visit_vulkan_resource_reindex(ctx
, instr
);
3924 case nir_intrinsic_store_ssbo
:
3925 visit_store_ssbo(ctx
, instr
);
3927 case nir_intrinsic_load_ssbo
:
3928 result
= visit_load_buffer(ctx
, instr
);
3930 case nir_intrinsic_ssbo_atomic_add
:
3931 case nir_intrinsic_ssbo_atomic_imin
:
3932 case nir_intrinsic_ssbo_atomic_umin
:
3933 case nir_intrinsic_ssbo_atomic_imax
:
3934 case nir_intrinsic_ssbo_atomic_umax
:
3935 case nir_intrinsic_ssbo_atomic_and
:
3936 case nir_intrinsic_ssbo_atomic_or
:
3937 case nir_intrinsic_ssbo_atomic_xor
:
3938 case nir_intrinsic_ssbo_atomic_exchange
:
3939 case nir_intrinsic_ssbo_atomic_comp_swap
:
3940 result
= visit_atomic_ssbo(ctx
, instr
);
3942 case nir_intrinsic_load_ubo
:
3943 result
= visit_load_ubo_buffer(ctx
, instr
);
3945 case nir_intrinsic_get_buffer_size
:
3946 result
= visit_get_buffer_size(ctx
, instr
);
3948 case nir_intrinsic_load_deref
:
3949 result
= visit_load_var(ctx
, instr
);
3951 case nir_intrinsic_store_deref
:
3952 visit_store_var(ctx
, instr
);
3954 case nir_intrinsic_load_input
:
3955 case nir_intrinsic_load_input_vertex
:
3956 case nir_intrinsic_load_per_vertex_input
:
3957 result
= visit_load(ctx
, instr
, false);
3959 case nir_intrinsic_load_output
:
3960 case nir_intrinsic_load_per_vertex_output
:
3961 result
= visit_load(ctx
, instr
, true);
3963 case nir_intrinsic_store_output
:
3964 case nir_intrinsic_store_per_vertex_output
:
3965 visit_store_output(ctx
, instr
);
3967 case nir_intrinsic_load_shared
:
3968 result
= visit_load_shared(ctx
, instr
);
3970 case nir_intrinsic_store_shared
:
3971 visit_store_shared(ctx
, instr
);
3973 case nir_intrinsic_bindless_image_samples
:
3974 case nir_intrinsic_image_deref_samples
:
3975 result
= visit_image_samples(ctx
, instr
);
3977 case nir_intrinsic_bindless_image_load
:
3978 result
= visit_image_load(ctx
, instr
, true);
3980 case nir_intrinsic_image_deref_load
:
3981 result
= visit_image_load(ctx
, instr
, false);
3983 case nir_intrinsic_bindless_image_store
:
3984 visit_image_store(ctx
, instr
, true);
3986 case nir_intrinsic_image_deref_store
:
3987 visit_image_store(ctx
, instr
, false);
3989 case nir_intrinsic_bindless_image_atomic_add
:
3990 case nir_intrinsic_bindless_image_atomic_imin
:
3991 case nir_intrinsic_bindless_image_atomic_umin
:
3992 case nir_intrinsic_bindless_image_atomic_imax
:
3993 case nir_intrinsic_bindless_image_atomic_umax
:
3994 case nir_intrinsic_bindless_image_atomic_and
:
3995 case nir_intrinsic_bindless_image_atomic_or
:
3996 case nir_intrinsic_bindless_image_atomic_xor
:
3997 case nir_intrinsic_bindless_image_atomic_exchange
:
3998 case nir_intrinsic_bindless_image_atomic_comp_swap
:
3999 case nir_intrinsic_bindless_image_atomic_inc_wrap
:
4000 case nir_intrinsic_bindless_image_atomic_dec_wrap
:
4001 result
= visit_image_atomic(ctx
, instr
, true);
4003 case nir_intrinsic_image_deref_atomic_add
:
4004 case nir_intrinsic_image_deref_atomic_imin
:
4005 case nir_intrinsic_image_deref_atomic_umin
:
4006 case nir_intrinsic_image_deref_atomic_imax
:
4007 case nir_intrinsic_image_deref_atomic_umax
:
4008 case nir_intrinsic_image_deref_atomic_and
:
4009 case nir_intrinsic_image_deref_atomic_or
:
4010 case nir_intrinsic_image_deref_atomic_xor
:
4011 case nir_intrinsic_image_deref_atomic_exchange
:
4012 case nir_intrinsic_image_deref_atomic_comp_swap
:
4013 case nir_intrinsic_image_deref_atomic_inc_wrap
:
4014 case nir_intrinsic_image_deref_atomic_dec_wrap
:
4015 result
= visit_image_atomic(ctx
, instr
, false);
4017 case nir_intrinsic_bindless_image_size
:
4018 result
= visit_image_size(ctx
, instr
, true);
4020 case nir_intrinsic_image_deref_size
:
4021 result
= visit_image_size(ctx
, instr
, false);
4023 case nir_intrinsic_shader_clock
:
4024 result
= ac_build_shader_clock(&ctx
->ac
,
4025 nir_intrinsic_memory_scope(instr
));
4027 case nir_intrinsic_discard
:
4028 case nir_intrinsic_discard_if
:
4029 emit_discard(ctx
, instr
);
4031 case nir_intrinsic_demote
:
4032 case nir_intrinsic_demote_if
:
4033 emit_demote(ctx
, instr
);
4035 case nir_intrinsic_memory_barrier
:
4036 case nir_intrinsic_group_memory_barrier
:
4037 case nir_intrinsic_memory_barrier_buffer
:
4038 case nir_intrinsic_memory_barrier_image
:
4039 case nir_intrinsic_memory_barrier_shared
:
4040 emit_membar(&ctx
->ac
, instr
);
4042 case nir_intrinsic_scoped_barrier
: {
4043 assert(!(nir_intrinsic_memory_semantics(instr
) &
4044 (NIR_MEMORY_MAKE_AVAILABLE
| NIR_MEMORY_MAKE_VISIBLE
)));
4046 nir_variable_mode modes
= nir_intrinsic_memory_modes(instr
);
4048 unsigned wait_flags
= 0;
4049 if (modes
& (nir_var_mem_global
| nir_var_mem_ssbo
))
4050 wait_flags
|= AC_WAIT_VLOAD
| AC_WAIT_VSTORE
;
4051 if (modes
& nir_var_mem_shared
)
4052 wait_flags
|= AC_WAIT_LGKM
;
4055 ac_build_waitcnt(&ctx
->ac
, wait_flags
);
4057 if (nir_intrinsic_execution_scope(instr
) == NIR_SCOPE_WORKGROUP
)
4058 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
4061 case nir_intrinsic_memory_barrier_tcs_patch
:
4063 case nir_intrinsic_control_barrier
:
4064 ac_emit_barrier(&ctx
->ac
, ctx
->stage
);
4066 case nir_intrinsic_shared_atomic_add
:
4067 case nir_intrinsic_shared_atomic_imin
:
4068 case nir_intrinsic_shared_atomic_umin
:
4069 case nir_intrinsic_shared_atomic_imax
:
4070 case nir_intrinsic_shared_atomic_umax
:
4071 case nir_intrinsic_shared_atomic_and
:
4072 case nir_intrinsic_shared_atomic_or
:
4073 case nir_intrinsic_shared_atomic_xor
:
4074 case nir_intrinsic_shared_atomic_exchange
:
4075 case nir_intrinsic_shared_atomic_comp_swap
:
4076 case nir_intrinsic_shared_atomic_fadd
: {
4077 LLVMValueRef ptr
= get_memory_ptr(ctx
, instr
->src
[0],
4078 instr
->src
[1].ssa
->bit_size
);
4079 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
4082 case nir_intrinsic_deref_atomic_add
:
4083 case nir_intrinsic_deref_atomic_imin
:
4084 case nir_intrinsic_deref_atomic_umin
:
4085 case nir_intrinsic_deref_atomic_imax
:
4086 case nir_intrinsic_deref_atomic_umax
:
4087 case nir_intrinsic_deref_atomic_and
:
4088 case nir_intrinsic_deref_atomic_or
:
4089 case nir_intrinsic_deref_atomic_xor
:
4090 case nir_intrinsic_deref_atomic_exchange
:
4091 case nir_intrinsic_deref_atomic_comp_swap
:
4092 case nir_intrinsic_deref_atomic_fadd
: {
4093 LLVMValueRef ptr
= get_src(ctx
, instr
->src
[0]);
4094 result
= visit_var_atomic(ctx
, instr
, ptr
, 1);
4097 case nir_intrinsic_load_barycentric_pixel
:
4098 result
= barycentric_center(ctx
, nir_intrinsic_interp_mode(instr
));
4100 case nir_intrinsic_load_barycentric_centroid
:
4101 result
= barycentric_centroid(ctx
, nir_intrinsic_interp_mode(instr
));
4103 case nir_intrinsic_load_barycentric_sample
:
4104 result
= barycentric_sample(ctx
, nir_intrinsic_interp_mode(instr
));
4106 case nir_intrinsic_load_barycentric_model
:
4107 result
= barycentric_model(ctx
);
4109 case nir_intrinsic_load_barycentric_at_offset
: {
4110 LLVMValueRef offset
= ac_to_float(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
4111 result
= barycentric_offset(ctx
, nir_intrinsic_interp_mode(instr
), offset
);
4114 case nir_intrinsic_load_barycentric_at_sample
: {
4115 LLVMValueRef sample_id
= get_src(ctx
, instr
->src
[0]);
4116 result
= barycentric_at_sample(ctx
, nir_intrinsic_interp_mode(instr
), sample_id
);
4119 case nir_intrinsic_load_interpolated_input
: {
4120 /* We assume any indirect loads have been lowered away */
4121 ASSERTED nir_const_value
*offset
= nir_src_as_const_value(instr
->src
[1]);
4123 assert(offset
[0].i32
== 0);
4125 LLVMValueRef interp_param
= get_src(ctx
, instr
->src
[0]);
4126 unsigned index
= nir_intrinsic_base(instr
);
4127 unsigned component
= nir_intrinsic_component(instr
);
4128 result
= load_interpolated_input(ctx
, interp_param
, index
,
4130 instr
->dest
.ssa
.num_components
,
4131 instr
->dest
.ssa
.bit_size
);
4134 case nir_intrinsic_emit_vertex
:
4135 ctx
->abi
->emit_vertex(ctx
->abi
, nir_intrinsic_stream_id(instr
), ctx
->abi
->outputs
);
4137 case nir_intrinsic_emit_vertex_with_counter
: {
4138 unsigned stream
= nir_intrinsic_stream_id(instr
);
4139 LLVMValueRef next_vertex
= get_src(ctx
, instr
->src
[0]);
4140 ctx
->abi
->emit_vertex_with_counter(ctx
->abi
, stream
,
4145 case nir_intrinsic_end_primitive
:
4146 case nir_intrinsic_end_primitive_with_counter
:
4147 ctx
->abi
->emit_primitive(ctx
->abi
, nir_intrinsic_stream_id(instr
));
4149 case nir_intrinsic_load_tess_coord
:
4150 result
= ctx
->abi
->load_tess_coord(ctx
->abi
);
4152 case nir_intrinsic_load_tess_level_outer
:
4153 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, false);
4155 case nir_intrinsic_load_tess_level_inner
:
4156 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, false);
4158 case nir_intrinsic_load_tess_level_outer_default
:
4159 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_OUTER
, true);
4161 case nir_intrinsic_load_tess_level_inner_default
:
4162 result
= ctx
->abi
->load_tess_level(ctx
->abi
, VARYING_SLOT_TESS_LEVEL_INNER
, true);
4164 case nir_intrinsic_load_patch_vertices_in
:
4165 result
= ctx
->abi
->load_patch_vertices_in(ctx
->abi
);
4167 case nir_intrinsic_vote_all
: {
4168 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
4169 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
4172 case nir_intrinsic_vote_any
: {
4173 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
4174 result
= LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->ac
.i32
, "");
4177 case nir_intrinsic_shuffle
:
4178 if (ctx
->ac
.chip_class
== GFX8
||
4179 ctx
->ac
.chip_class
== GFX9
||
4180 (ctx
->ac
.chip_class
>= GFX10
&& ctx
->ac
.wave_size
== 32)) {
4181 result
= ac_build_shuffle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
4182 get_src(ctx
, instr
->src
[1]));
4184 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
4185 LLVMValueRef index
= get_src(ctx
, instr
->src
[1]);
4186 LLVMTypeRef type
= LLVMTypeOf(src
);
4187 struct waterfall_context wctx
;
4188 LLVMValueRef index_val
;
4190 index_val
= enter_waterfall(ctx
, &wctx
, index
, true);
4192 src
= LLVMBuildZExt(ctx
->ac
.builder
, src
,
4195 result
= ac_build_intrinsic(&ctx
->ac
, "llvm.amdgcn.readlane",
4197 (LLVMValueRef
[]) { src
, index_val
}, 2,
4198 AC_FUNC_ATTR_READNONE
|
4199 AC_FUNC_ATTR_CONVERGENT
);
4201 result
= LLVMBuildTrunc(ctx
->ac
.builder
, result
, type
, "");
4203 result
= exit_waterfall(ctx
, &wctx
, result
);
4206 case nir_intrinsic_reduce
:
4207 result
= ac_build_reduce(&ctx
->ac
,
4208 get_src(ctx
, instr
->src
[0]),
4209 instr
->const_index
[0],
4210 instr
->const_index
[1]);
4212 case nir_intrinsic_inclusive_scan
:
4213 result
= ac_build_inclusive_scan(&ctx
->ac
,
4214 get_src(ctx
, instr
->src
[0]),
4215 instr
->const_index
[0]);
4217 case nir_intrinsic_exclusive_scan
:
4218 result
= ac_build_exclusive_scan(&ctx
->ac
,
4219 get_src(ctx
, instr
->src
[0]),
4220 instr
->const_index
[0]);
4222 case nir_intrinsic_quad_broadcast
: {
4223 unsigned lane
= nir_src_as_uint(instr
->src
[1]);
4224 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
4225 lane
, lane
, lane
, lane
);
4228 case nir_intrinsic_quad_swap_horizontal
:
4229 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 1, 0, 3 ,2);
4231 case nir_intrinsic_quad_swap_vertical
:
4232 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 2, 3, 0 ,1);
4234 case nir_intrinsic_quad_swap_diagonal
:
4235 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), 3, 2, 1 ,0);
4237 case nir_intrinsic_quad_swizzle_amd
: {
4238 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
4239 result
= ac_build_quad_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
4240 mask
& 0x3, (mask
>> 2) & 0x3,
4241 (mask
>> 4) & 0x3, (mask
>> 6) & 0x3);
4244 case nir_intrinsic_masked_swizzle_amd
: {
4245 uint32_t mask
= nir_intrinsic_swizzle_mask(instr
);
4246 result
= ac_build_ds_swizzle(&ctx
->ac
, get_src(ctx
, instr
->src
[0]), mask
);
4249 case nir_intrinsic_write_invocation_amd
:
4250 result
= ac_build_writelane(&ctx
->ac
, get_src(ctx
, instr
->src
[0]),
4251 get_src(ctx
, instr
->src
[1]),
4252 get_src(ctx
, instr
->src
[2]));
4254 case nir_intrinsic_mbcnt_amd
:
4255 result
= ac_build_mbcnt(&ctx
->ac
, get_src(ctx
, instr
->src
[0]));
4257 case nir_intrinsic_load_scratch
: {
4258 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
4259 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
4261 LLVMTypeRef comp_type
=
4262 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
4263 LLVMTypeRef vec_type
=
4264 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
4265 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
4266 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
4267 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
4268 LLVMPointerType(vec_type
, addr_space
), "");
4269 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
4272 case nir_intrinsic_store_scratch
: {
4273 LLVMValueRef offset
= get_src(ctx
, instr
->src
[1]);
4274 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->scratch
,
4276 LLVMTypeRef comp_type
=
4277 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->src
[0].ssa
->bit_size
);
4278 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
4279 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
4280 LLVMPointerType(comp_type
, addr_space
), "");
4281 LLVMValueRef src
= get_src(ctx
, instr
->src
[0]);
4282 unsigned wrmask
= nir_intrinsic_write_mask(instr
);
4285 u_bit_scan_consecutive_range(&wrmask
, &start
, &count
);
4287 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, start
, false);
4288 LLVMValueRef offset_ptr
= LLVMBuildGEP(ctx
->ac
.builder
, ptr
, &offset
, 1, "");
4289 LLVMTypeRef vec_type
=
4290 count
== 1 ? comp_type
: LLVMVectorType(comp_type
, count
);
4291 offset_ptr
= LLVMBuildBitCast(ctx
->ac
.builder
,
4293 LLVMPointerType(vec_type
, addr_space
),
4295 LLVMValueRef offset_src
=
4296 ac_extract_components(&ctx
->ac
, src
, start
, count
);
4297 LLVMBuildStore(ctx
->ac
.builder
, offset_src
, offset_ptr
);
4301 case nir_intrinsic_load_constant
: {
4302 unsigned base
= nir_intrinsic_base(instr
);
4303 unsigned range
= nir_intrinsic_range(instr
);
4305 LLVMValueRef offset
= get_src(ctx
, instr
->src
[0]);
4306 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
,
4307 LLVMConstInt(ctx
->ac
.i32
, base
, false), "");
4309 /* Clamp the offset to avoid out-of-bound access because global
4310 * instructions can't handle them.
4312 LLVMValueRef size
= LLVMConstInt(ctx
->ac
.i32
, base
+ range
, false);
4313 LLVMValueRef cond
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
,
4315 offset
= LLVMBuildSelect(ctx
->ac
.builder
, cond
, offset
, size
, "");
4317 LLVMValueRef ptr
= ac_build_gep0(&ctx
->ac
, ctx
->constant_data
,
4319 LLVMTypeRef comp_type
=
4320 LLVMIntTypeInContext(ctx
->ac
.context
, instr
->dest
.ssa
.bit_size
);
4321 LLVMTypeRef vec_type
=
4322 instr
->dest
.ssa
.num_components
== 1 ? comp_type
:
4323 LLVMVectorType(comp_type
, instr
->dest
.ssa
.num_components
);
4324 unsigned addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
4325 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
,
4326 LLVMPointerType(vec_type
, addr_space
), "");
4327 result
= LLVMBuildLoad(ctx
->ac
.builder
, ptr
, "");
4331 fprintf(stderr
, "Unknown intrinsic: ");
4332 nir_print_instr(&instr
->instr
, stderr
);
4333 fprintf(stderr
, "\n");
4337 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4341 static LLVMValueRef
get_bindless_index_from_uniform(struct ac_nir_context
*ctx
,
4342 unsigned base_index
,
4343 unsigned constant_index
,
4344 LLVMValueRef dynamic_index
)
4346 LLVMValueRef offset
= LLVMConstInt(ctx
->ac
.i32
, base_index
* 4, 0);
4347 LLVMValueRef index
= LLVMBuildAdd(ctx
->ac
.builder
, dynamic_index
,
4348 LLVMConstInt(ctx
->ac
.i32
, constant_index
, 0), "");
4350 /* Bindless uniforms are 64bit so multiple index by 8 */
4351 index
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i32
, 8, 0), "");
4352 offset
= LLVMBuildAdd(ctx
->ac
.builder
, offset
, index
, "");
4354 LLVMValueRef ubo_index
= ctx
->abi
->load_ubo(ctx
->abi
, ctx
->ac
.i32_0
);
4356 LLVMValueRef ret
= ac_build_buffer_load(&ctx
->ac
, ubo_index
, 1, NULL
, offset
,
4357 NULL
, 0, 0, true, true);
4359 return LLVMBuildBitCast(ctx
->ac
.builder
, ret
, ctx
->ac
.i32
, "");
4362 struct sampler_desc_address
{
4363 unsigned descriptor_set
;
4364 unsigned base_index
; /* binding in vulkan */
4365 unsigned constant_index
;
4366 LLVMValueRef dynamic_index
;
4371 static struct sampler_desc_address
4372 get_sampler_desc_internal(struct ac_nir_context
*ctx
,
4373 nir_deref_instr
*deref_instr
,
4374 const nir_instr
*instr
,
4377 LLVMValueRef index
= NULL
;
4378 unsigned constant_index
= 0;
4379 unsigned descriptor_set
;
4380 unsigned base_index
;
4381 bool bindless
= false;
4386 nir_intrinsic_instr
*img_instr
= nir_instr_as_intrinsic(instr
);
4389 index
= get_src(ctx
, img_instr
->src
[0]);
4391 nir_tex_instr
*tex_instr
= nir_instr_as_tex(instr
);
4392 int sampSrcIdx
= nir_tex_instr_src_index(tex_instr
,
4393 nir_tex_src_sampler_handle
);
4394 if (sampSrcIdx
!= -1) {
4397 index
= get_src(ctx
, tex_instr
->src
[sampSrcIdx
].src
);
4399 assert(tex_instr
&& !image
);
4400 base_index
= tex_instr
->sampler_index
;
4404 while(deref_instr
->deref_type
!= nir_deref_type_var
) {
4405 if (deref_instr
->deref_type
== nir_deref_type_array
) {
4406 unsigned array_size
= glsl_get_aoa_size(deref_instr
->type
);
4410 if (nir_src_is_const(deref_instr
->arr
.index
)) {
4411 constant_index
+= array_size
* nir_src_as_uint(deref_instr
->arr
.index
);
4413 LLVMValueRef indirect
= get_src(ctx
, deref_instr
->arr
.index
);
4415 indirect
= LLVMBuildMul(ctx
->ac
.builder
, indirect
,
4416 LLVMConstInt(ctx
->ac
.i32
, array_size
, false), "");
4421 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
, indirect
, "");
4424 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
4425 } else if (deref_instr
->deref_type
== nir_deref_type_struct
) {
4426 unsigned sidx
= deref_instr
->strct
.index
;
4427 deref_instr
= nir_src_as_deref(deref_instr
->parent
);
4428 constant_index
+= glsl_get_struct_location_offset(deref_instr
->type
, sidx
);
4430 unreachable("Unsupported deref type");
4433 descriptor_set
= deref_instr
->var
->data
.descriptor_set
;
4435 if (deref_instr
->var
->data
.bindless
) {
4436 /* For now just assert on unhandled variable types */
4437 assert(deref_instr
->var
->data
.mode
== nir_var_uniform
);
4439 base_index
= deref_instr
->var
->data
.driver_location
;
4442 index
= index
? index
: ctx
->ac
.i32_0
;
4443 index
= get_bindless_index_from_uniform(ctx
, base_index
,
4444 constant_index
, index
);
4446 base_index
= deref_instr
->var
->data
.binding
;
4448 return (struct sampler_desc_address
) {
4449 .descriptor_set
= descriptor_set
,
4450 .base_index
= base_index
,
4451 .constant_index
= constant_index
,
4452 .dynamic_index
= index
,
4454 .bindless
= bindless
,
4458 /* Extract any possibly divergent index into a separate value that can be fed
4459 * into get_sampler_desc with the same arguments. */
4460 static LLVMValueRef
get_sampler_desc_index(struct ac_nir_context
*ctx
,
4461 nir_deref_instr
*deref_instr
,
4462 const nir_instr
*instr
,
4465 struct sampler_desc_address addr
= get_sampler_desc_internal(ctx
, deref_instr
, instr
, image
);
4466 return addr
.dynamic_index
;
4469 static LLVMValueRef
get_sampler_desc(struct ac_nir_context
*ctx
,
4470 nir_deref_instr
*deref_instr
,
4471 enum ac_descriptor_type desc_type
,
4472 const nir_instr
*instr
,
4474 bool image
, bool write
)
4476 struct sampler_desc_address addr
= get_sampler_desc_internal(ctx
, deref_instr
, instr
, image
);
4477 return ctx
->abi
->load_sampler_desc(ctx
->abi
,
4478 addr
.descriptor_set
,
4480 addr
.constant_index
, index
,
4481 desc_type
, addr
.image
, write
, addr
.bindless
);
4484 /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL.
4487 * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic
4488 * filtering manually. The driver sets img7 to a mask clearing
4489 * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do:
4490 * s_and_b32 samp0, samp0, img7
4493 * The ANISO_OVERRIDE sampler field enables this fix in TA.
4495 static LLVMValueRef
sici_fix_sampler_aniso(struct ac_nir_context
*ctx
,
4496 LLVMValueRef res
, LLVMValueRef samp
)
4498 LLVMBuilderRef builder
= ctx
->ac
.builder
;
4499 LLVMValueRef img7
, samp0
;
4501 if (ctx
->ac
.chip_class
>= GFX8
)
4504 img7
= LLVMBuildExtractElement(builder
, res
,
4505 LLVMConstInt(ctx
->ac
.i32
, 7, 0), "");
4506 samp0
= LLVMBuildExtractElement(builder
, samp
,
4507 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
4508 samp0
= LLVMBuildAnd(builder
, samp0
, img7
, "");
4509 return LLVMBuildInsertElement(builder
, samp
, samp0
,
4510 LLVMConstInt(ctx
->ac
.i32
, 0, 0), "");
4513 static void tex_fetch_ptrs(struct ac_nir_context
*ctx
,
4514 nir_tex_instr
*instr
,
4515 struct waterfall_context
*wctx
,
4516 LLVMValueRef
*res_ptr
, LLVMValueRef
*samp_ptr
,
4517 LLVMValueRef
*fmask_ptr
)
4519 nir_deref_instr
*texture_deref_instr
= NULL
;
4520 nir_deref_instr
*sampler_deref_instr
= NULL
;
4523 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
4524 switch (instr
->src
[i
].src_type
) {
4525 case nir_tex_src_texture_deref
:
4526 texture_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
4528 case nir_tex_src_sampler_deref
:
4529 sampler_deref_instr
= nir_src_as_deref(instr
->src
[i
].src
);
4531 case nir_tex_src_plane
:
4532 plane
= nir_src_as_int(instr
->src
[i
].src
);
4539 LLVMValueRef texture_dynamic_index
= get_sampler_desc_index(ctx
, texture_deref_instr
,
4540 &instr
->instr
, false);
4541 if (!sampler_deref_instr
)
4542 sampler_deref_instr
= texture_deref_instr
;
4544 LLVMValueRef sampler_dynamic_index
= get_sampler_desc_index(ctx
, sampler_deref_instr
,
4545 &instr
->instr
, false);
4546 if (instr
->texture_non_uniform
)
4547 texture_dynamic_index
= enter_waterfall(ctx
, wctx
+ 0, texture_dynamic_index
, true);
4549 if (instr
->sampler_non_uniform
)
4550 sampler_dynamic_index
= enter_waterfall(ctx
, wctx
+ 1, sampler_dynamic_index
, true);
4552 enum ac_descriptor_type main_descriptor
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
? AC_DESC_BUFFER
: AC_DESC_IMAGE
;
4555 assert(instr
->op
!= nir_texop_txf_ms
&&
4556 instr
->op
!= nir_texop_samples_identical
);
4557 assert(instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
);
4559 main_descriptor
= AC_DESC_PLANE_0
+ plane
;
4562 if (instr
->op
== nir_texop_fragment_mask_fetch
) {
4563 /* The fragment mask is fetched from the compressed
4564 * multisampled surface.
4566 main_descriptor
= AC_DESC_FMASK
;
4569 *res_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, main_descriptor
, &instr
->instr
,
4570 texture_dynamic_index
, false, false);
4573 *samp_ptr
= get_sampler_desc(ctx
, sampler_deref_instr
, AC_DESC_SAMPLER
, &instr
->instr
,
4574 sampler_dynamic_index
, false, false);
4575 if (instr
->sampler_dim
< GLSL_SAMPLER_DIM_RECT
)
4576 *samp_ptr
= sici_fix_sampler_aniso(ctx
, *res_ptr
, *samp_ptr
);
4578 if (fmask_ptr
&& (instr
->op
== nir_texop_txf_ms
||
4579 instr
->op
== nir_texop_samples_identical
))
4580 *fmask_ptr
= get_sampler_desc(ctx
, texture_deref_instr
, AC_DESC_FMASK
,
4581 &instr
->instr
, texture_dynamic_index
, false, false);
4584 static LLVMValueRef
apply_round_slice(struct ac_llvm_context
*ctx
,
4587 coord
= ac_to_float(ctx
, coord
);
4588 coord
= ac_build_round(ctx
, coord
);
4589 coord
= ac_to_integer(ctx
, coord
);
4593 static void visit_tex(struct ac_nir_context
*ctx
, nir_tex_instr
*instr
)
4595 LLVMValueRef result
= NULL
;
4596 struct ac_image_args args
= { 0 };
4597 LLVMValueRef fmask_ptr
= NULL
, sample_index
= NULL
;
4598 LLVMValueRef ddx
= NULL
, ddy
= NULL
;
4599 unsigned offset_src
= 0;
4600 struct waterfall_context wctx
[2] = {{{0}}};
4602 tex_fetch_ptrs(ctx
, instr
, wctx
, &args
.resource
, &args
.sampler
, &fmask_ptr
);
4604 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++) {
4605 switch (instr
->src
[i
].src_type
) {
4606 case nir_tex_src_coord
: {
4607 LLVMValueRef coord
= get_src(ctx
, instr
->src
[i
].src
);
4608 for (unsigned chan
= 0; chan
< instr
->coord_components
; ++chan
)
4609 args
.coords
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, coord
, chan
);
4612 case nir_tex_src_projector
:
4614 case nir_tex_src_comparator
:
4615 if (instr
->is_shadow
) {
4616 args
.compare
= get_src(ctx
, instr
->src
[i
].src
);
4617 args
.compare
= ac_to_float(&ctx
->ac
, args
.compare
);
4620 case nir_tex_src_offset
:
4621 args
.offset
= get_src(ctx
, instr
->src
[i
].src
);
4624 case nir_tex_src_bias
:
4625 args
.bias
= get_src(ctx
, instr
->src
[i
].src
);
4627 case nir_tex_src_lod
: {
4628 if (nir_src_is_const(instr
->src
[i
].src
) && nir_src_as_uint(instr
->src
[i
].src
) == 0)
4629 args
.level_zero
= true;
4631 args
.lod
= get_src(ctx
, instr
->src
[i
].src
);
4634 case nir_tex_src_ms_index
:
4635 sample_index
= get_src(ctx
, instr
->src
[i
].src
);
4637 case nir_tex_src_ms_mcs
:
4639 case nir_tex_src_ddx
:
4640 ddx
= get_src(ctx
, instr
->src
[i
].src
);
4642 case nir_tex_src_ddy
:
4643 ddy
= get_src(ctx
, instr
->src
[i
].src
);
4645 case nir_tex_src_min_lod
:
4646 args
.min_lod
= get_src(ctx
, instr
->src
[i
].src
);
4648 case nir_tex_src_texture_offset
:
4649 case nir_tex_src_sampler_offset
:
4650 case nir_tex_src_plane
:
4656 if (instr
->op
== nir_texop_txs
&& instr
->sampler_dim
== GLSL_SAMPLER_DIM_BUF
) {
4657 result
= get_buffer_size(ctx
, args
.resource
, true);
4661 if (instr
->op
== nir_texop_texture_samples
) {
4662 LLVMValueRef res
, samples
, is_msaa
;
4663 LLVMValueRef default_sample
;
4665 res
= LLVMBuildBitCast(ctx
->ac
.builder
, args
.resource
, ctx
->ac
.v8i32
, "");
4666 samples
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
4667 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4668 is_msaa
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4669 LLVMConstInt(ctx
->ac
.i32
, 28, false), "");
4670 is_msaa
= LLVMBuildAnd(ctx
->ac
.builder
, is_msaa
,
4671 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4672 is_msaa
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, is_msaa
,
4673 LLVMConstInt(ctx
->ac
.i32
, 0xe, false), "");
4675 samples
= LLVMBuildLShr(ctx
->ac
.builder
, samples
,
4676 LLVMConstInt(ctx
->ac
.i32
, 16, false), "");
4677 samples
= LLVMBuildAnd(ctx
->ac
.builder
, samples
,
4678 LLVMConstInt(ctx
->ac
.i32
, 0xf, false), "");
4679 samples
= LLVMBuildShl(ctx
->ac
.builder
, ctx
->ac
.i32_1
,
4682 if (ctx
->abi
->robust_buffer_access
) {
4683 LLVMValueRef dword1
, is_null_descriptor
;
4685 /* Extract the second dword of the descriptor, if it's
4686 * all zero, then it's a null descriptor.
4688 dword1
= LLVMBuildExtractElement(ctx
->ac
.builder
, res
,
4689 LLVMConstInt(ctx
->ac
.i32
, 1, false), "");
4690 is_null_descriptor
=
4691 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
, dword1
,
4692 LLVMConstInt(ctx
->ac
.i32
, 0, false), "");
4694 LLVMBuildSelect(ctx
->ac
.builder
, is_null_descriptor
,
4695 ctx
->ac
.i32_0
, ctx
->ac
.i32_1
, "");
4697 default_sample
= ctx
->ac
.i32_1
;
4700 samples
= LLVMBuildSelect(ctx
->ac
.builder
, is_msaa
, samples
,
4701 default_sample
, "");
4706 if (args
.offset
&& instr
->op
!= nir_texop_txf
&& instr
->op
!= nir_texop_txf_ms
) {
4707 LLVMValueRef offset
[3], pack
;
4708 for (unsigned chan
= 0; chan
< 3; ++chan
)
4709 offset
[chan
] = ctx
->ac
.i32_0
;
4711 unsigned num_components
= ac_get_llvm_num_components(args
.offset
);
4712 for (unsigned chan
= 0; chan
< num_components
; chan
++) {
4713 offset
[chan
] = ac_llvm_extract_elem(&ctx
->ac
, args
.offset
, chan
);
4714 offset
[chan
] = LLVMBuildAnd(ctx
->ac
.builder
, offset
[chan
],
4715 LLVMConstInt(ctx
->ac
.i32
, 0x3f, false), "");
4717 offset
[chan
] = LLVMBuildShl(ctx
->ac
.builder
, offset
[chan
],
4718 LLVMConstInt(ctx
->ac
.i32
, chan
* 8, false), "");
4720 pack
= LLVMBuildOr(ctx
->ac
.builder
, offset
[0], offset
[1], "");
4721 pack
= LLVMBuildOr(ctx
->ac
.builder
, pack
, offset
[2], "");
4725 /* Section 8.23.1 (Depth Texture Comparison Mode) of the
4726 * OpenGL 4.5 spec says:
4728 * "If the texture’s internal format indicates a fixed-point
4729 * depth texture, then D_t and D_ref are clamped to the
4730 * range [0, 1]; otherwise no clamping is performed."
4732 * TC-compatible HTILE promotes Z16 and Z24 to Z32_FLOAT,
4733 * so the depth comparison value isn't clamped for Z16 and
4734 * Z24 anymore. Do it manually here for GFX8-9; GFX10 has
4735 * an explicitly clamped 32-bit float format.
4738 ctx
->ac
.chip_class
>= GFX8
&&
4739 ctx
->ac
.chip_class
<= GFX9
&&
4740 ctx
->abi
->clamp_shadow_reference
) {
4741 LLVMValueRef upgraded
, clamped
;
4743 upgraded
= LLVMBuildExtractElement(ctx
->ac
.builder
, args
.sampler
,
4744 LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4745 upgraded
= LLVMBuildLShr(ctx
->ac
.builder
, upgraded
,
4746 LLVMConstInt(ctx
->ac
.i32
, 29, false), "");
4747 upgraded
= LLVMBuildTrunc(ctx
->ac
.builder
, upgraded
, ctx
->ac
.i1
, "");
4748 clamped
= ac_build_clamp(&ctx
->ac
, args
.compare
);
4749 args
.compare
= LLVMBuildSelect(ctx
->ac
.builder
, upgraded
, clamped
,
4753 /* pack derivatives */
4755 int num_src_deriv_channels
, num_dest_deriv_channels
;
4756 switch (instr
->sampler_dim
) {
4757 case GLSL_SAMPLER_DIM_3D
:
4758 case GLSL_SAMPLER_DIM_CUBE
:
4759 num_src_deriv_channels
= 3;
4760 num_dest_deriv_channels
= 3;
4762 case GLSL_SAMPLER_DIM_2D
:
4764 num_src_deriv_channels
= 2;
4765 num_dest_deriv_channels
= 2;
4767 case GLSL_SAMPLER_DIM_1D
:
4768 num_src_deriv_channels
= 1;
4769 if (ctx
->ac
.chip_class
== GFX9
) {
4770 num_dest_deriv_channels
= 2;
4772 num_dest_deriv_channels
= 1;
4777 for (unsigned i
= 0; i
< num_src_deriv_channels
; i
++) {
4778 args
.derivs
[i
] = ac_to_float(&ctx
->ac
,
4779 ac_llvm_extract_elem(&ctx
->ac
, ddx
, i
));
4780 args
.derivs
[num_dest_deriv_channels
+ i
] = ac_to_float(&ctx
->ac
,
4781 ac_llvm_extract_elem(&ctx
->ac
, ddy
, i
));
4783 for (unsigned i
= num_src_deriv_channels
; i
< num_dest_deriv_channels
; i
++) {
4784 args
.derivs
[i
] = ctx
->ac
.f32_0
;
4785 args
.derivs
[num_dest_deriv_channels
+ i
] = ctx
->ac
.f32_0
;
4789 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&& args
.coords
[0]) {
4790 for (unsigned chan
= 0; chan
< instr
->coord_components
; chan
++)
4791 args
.coords
[chan
] = ac_to_float(&ctx
->ac
, args
.coords
[chan
]);
4792 if (instr
->coord_components
== 3)
4793 args
.coords
[3] = LLVMGetUndef(ctx
->ac
.f32
);
4794 ac_prepare_cube_coords(&ctx
->ac
,
4795 instr
->op
== nir_texop_txd
, instr
->is_array
,
4796 instr
->op
== nir_texop_lod
, args
.coords
, args
.derivs
);
4799 /* Texture coordinates fixups */
4800 if (instr
->coord_components
> 1 &&
4801 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4803 instr
->op
!= nir_texop_txf
) {
4804 args
.coords
[1] = apply_round_slice(&ctx
->ac
, args
.coords
[1]);
4807 if (instr
->coord_components
> 2 &&
4808 (instr
->sampler_dim
== GLSL_SAMPLER_DIM_2D
||
4809 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
||
4810 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS
||
4811 instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
) &&
4813 instr
->op
!= nir_texop_txf
&&
4814 instr
->op
!= nir_texop_txf_ms
&&
4815 instr
->op
!= nir_texop_fragment_fetch
&&
4816 instr
->op
!= nir_texop_fragment_mask_fetch
) {
4817 args
.coords
[2] = apply_round_slice(&ctx
->ac
, args
.coords
[2]);
4820 if (ctx
->ac
.chip_class
== GFX9
&&
4821 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4822 instr
->op
!= nir_texop_lod
) {
4823 LLVMValueRef filler
;
4824 if (instr
->op
== nir_texop_txf
)
4825 filler
= ctx
->ac
.i32_0
;
4827 filler
= LLVMConstReal(ctx
->ac
.f32
, 0.5);
4829 if (instr
->is_array
)
4830 args
.coords
[2] = args
.coords
[1];
4831 args
.coords
[1] = filler
;
4834 /* Pack sample index */
4835 if (sample_index
&& (instr
->op
== nir_texop_txf_ms
||
4836 instr
->op
== nir_texop_fragment_fetch
))
4837 args
.coords
[instr
->coord_components
] = sample_index
;
4839 if (instr
->op
== nir_texop_samples_identical
) {
4840 struct ac_image_args txf_args
= { 0 };
4841 memcpy(txf_args
.coords
, args
.coords
, sizeof(txf_args
.coords
));
4843 txf_args
.dmask
= 0xf;
4844 txf_args
.resource
= fmask_ptr
;
4845 txf_args
.dim
= instr
->is_array
? ac_image_2darray
: ac_image_2d
;
4846 result
= build_tex_intrinsic(ctx
, instr
, &txf_args
);
4848 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4849 result
= emit_int_cmp(&ctx
->ac
, LLVMIntEQ
, result
, ctx
->ac
.i32_0
);
4853 if ((instr
->sampler_dim
== GLSL_SAMPLER_DIM_SUBPASS_MS
||
4854 instr
->sampler_dim
== GLSL_SAMPLER_DIM_MS
) &&
4855 instr
->op
!= nir_texop_txs
&&
4856 instr
->op
!= nir_texop_fragment_fetch
&&
4857 instr
->op
!= nir_texop_fragment_mask_fetch
) {
4858 unsigned sample_chan
= instr
->is_array
? 3 : 2;
4859 args
.coords
[sample_chan
] = adjust_sample_index_using_fmask(
4860 &ctx
->ac
, args
.coords
[0], args
.coords
[1],
4861 instr
->is_array
? args
.coords
[2] : NULL
,
4862 args
.coords
[sample_chan
], fmask_ptr
);
4865 if (args
.offset
&& (instr
->op
== nir_texop_txf
|| instr
->op
== nir_texop_txf_ms
)) {
4866 int num_offsets
= instr
->src
[offset_src
].src
.ssa
->num_components
;
4867 num_offsets
= MIN2(num_offsets
, instr
->coord_components
);
4868 for (unsigned i
= 0; i
< num_offsets
; ++i
) {
4869 args
.coords
[i
] = LLVMBuildAdd(
4870 ctx
->ac
.builder
, args
.coords
[i
],
4871 LLVMConstInt(ctx
->ac
.i32
, nir_src_comp_as_uint(instr
->src
[offset_src
].src
, i
), false), "");
4876 /* DMASK was repurposed for GATHER4. 4 components are always
4877 * returned and DMASK works like a swizzle - it selects
4878 * the component to fetch. The only valid DMASK values are
4879 * 1=red, 2=green, 4=blue, 8=alpha. (e.g. 1 returns
4880 * (red,red,red,red) etc.) The ISA document doesn't mention
4884 if (instr
->op
== nir_texop_tg4
) {
4885 if (instr
->is_shadow
)
4888 args
.dmask
= 1 << instr
->component
;
4891 if (instr
->sampler_dim
!= GLSL_SAMPLER_DIM_BUF
) {
4892 args
.dim
= ac_get_sampler_dim(ctx
->ac
.chip_class
, instr
->sampler_dim
, instr
->is_array
);
4893 args
.unorm
= instr
->sampler_dim
== GLSL_SAMPLER_DIM_RECT
;
4896 /* Adjust the number of coordinates because we only need (x,y) for 2D
4897 * multisampled images and (x,y,layer) for 2D multisampled layered
4898 * images or for multisampled input attachments.
4900 if (instr
->op
== nir_texop_fragment_mask_fetch
) {
4901 if (args
.dim
== ac_image_2dmsaa
) {
4902 args
.dim
= ac_image_2d
;
4904 assert(args
.dim
== ac_image_2darraymsaa
);
4905 args
.dim
= ac_image_2darray
;
4909 assert(instr
->dest
.is_ssa
);
4910 args
.d16
= instr
->dest
.ssa
.bit_size
== 16;
4912 result
= build_tex_intrinsic(ctx
, instr
, &args
);
4914 if (instr
->op
== nir_texop_query_levels
)
4915 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, LLVMConstInt(ctx
->ac
.i32
, 3, false), "");
4916 else if (instr
->is_shadow
&& instr
->is_new_style_shadow
&&
4917 instr
->op
!= nir_texop_txs
&& instr
->op
!= nir_texop_lod
&&
4918 instr
->op
!= nir_texop_tg4
)
4919 result
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, ctx
->ac
.i32_0
, "");
4920 else if (instr
->op
== nir_texop_txs
&&
4921 instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
&&
4923 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4924 LLVMValueRef six
= LLVMConstInt(ctx
->ac
.i32
, 6, false);
4925 LLVMValueRef z
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4926 z
= LLVMBuildSDiv(ctx
->ac
.builder
, z
, six
, "");
4927 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, z
, two
, "");
4928 } else if (ctx
->ac
.chip_class
== GFX9
&&
4929 instr
->op
== nir_texop_txs
&&
4930 instr
->sampler_dim
== GLSL_SAMPLER_DIM_1D
&&
4932 LLVMValueRef two
= LLVMConstInt(ctx
->ac
.i32
, 2, false);
4933 LLVMValueRef layers
= LLVMBuildExtractElement(ctx
->ac
.builder
, result
, two
, "");
4934 result
= LLVMBuildInsertElement(ctx
->ac
.builder
, result
, layers
,
4936 } else if (instr
->dest
.ssa
.num_components
!= 4)
4937 result
= ac_trim_vector(&ctx
->ac
, result
, instr
->dest
.ssa
.num_components
);
4941 assert(instr
->dest
.is_ssa
);
4942 result
= ac_to_integer(&ctx
->ac
, result
);
4944 for (int i
= ARRAY_SIZE(wctx
); --i
>= 0;) {
4945 result
= exit_waterfall(ctx
, wctx
+ i
, result
);
4948 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4952 static void visit_phi(struct ac_nir_context
*ctx
, nir_phi_instr
*instr
)
4954 LLVMTypeRef type
= get_def_type(ctx
, &instr
->dest
.ssa
);
4955 LLVMValueRef result
= LLVMBuildPhi(ctx
->ac
.builder
, type
, "");
4957 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
4958 _mesa_hash_table_insert(ctx
->phis
, instr
, result
);
4961 static void visit_post_phi(struct ac_nir_context
*ctx
,
4962 nir_phi_instr
*instr
,
4963 LLVMValueRef llvm_phi
)
4965 nir_foreach_phi_src(src
, instr
) {
4966 LLVMBasicBlockRef block
= get_block(ctx
, src
->pred
);
4967 LLVMValueRef llvm_src
= get_src(ctx
, src
->src
);
4969 LLVMAddIncoming(llvm_phi
, &llvm_src
, &block
, 1);
4973 static void phi_post_pass(struct ac_nir_context
*ctx
)
4975 hash_table_foreach(ctx
->phis
, entry
) {
4976 visit_post_phi(ctx
, (nir_phi_instr
*)entry
->key
,
4977 (LLVMValueRef
)entry
->data
);
4982 static bool is_def_used_in_an_export(const nir_ssa_def
* def
) {
4983 nir_foreach_use(use_src
, def
) {
4984 if (use_src
->parent_instr
->type
== nir_instr_type_intrinsic
) {
4985 nir_intrinsic_instr
*instr
= nir_instr_as_intrinsic(use_src
->parent_instr
);
4986 if (instr
->intrinsic
== nir_intrinsic_store_deref
)
4988 } else if (use_src
->parent_instr
->type
== nir_instr_type_alu
) {
4989 nir_alu_instr
*instr
= nir_instr_as_alu(use_src
->parent_instr
);
4990 if (instr
->op
== nir_op_vec4
&&
4991 is_def_used_in_an_export(&instr
->dest
.dest
.ssa
)) {
4999 static void visit_ssa_undef(struct ac_nir_context
*ctx
,
5000 const nir_ssa_undef_instr
*instr
)
5002 unsigned num_components
= instr
->def
.num_components
;
5003 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->ac
.context
, instr
->def
.bit_size
);
5005 if (!ctx
->abi
->convert_undef_to_zero
|| is_def_used_in_an_export(&instr
->def
)) {
5008 if (num_components
== 1)
5009 undef
= LLVMGetUndef(type
);
5011 undef
= LLVMGetUndef(LLVMVectorType(type
, num_components
));
5013 ctx
->ssa_defs
[instr
->def
.index
] = undef
;
5015 LLVMValueRef zero
= LLVMConstInt(type
, 0, false);
5016 if (num_components
> 1) {
5017 zero
= ac_build_gather_values_extended(
5018 &ctx
->ac
, &zero
, 4, 0, false, false);
5020 ctx
->ssa_defs
[instr
->def
.index
] = zero
;
5024 static void visit_jump(struct ac_llvm_context
*ctx
,
5025 const nir_jump_instr
*instr
)
5027 switch (instr
->type
) {
5028 case nir_jump_break
:
5029 ac_build_break(ctx
);
5031 case nir_jump_continue
:
5032 ac_build_continue(ctx
);
5035 fprintf(stderr
, "Unknown NIR jump instr: ");
5036 nir_print_instr(&instr
->instr
, stderr
);
5037 fprintf(stderr
, "\n");
5043 glsl_base_to_llvm_type(struct ac_llvm_context
*ac
,
5044 enum glsl_base_type type
)
5048 case GLSL_TYPE_UINT
:
5049 case GLSL_TYPE_BOOL
:
5050 case GLSL_TYPE_SUBROUTINE
:
5052 case GLSL_TYPE_INT8
:
5053 case GLSL_TYPE_UINT8
:
5055 case GLSL_TYPE_INT16
:
5056 case GLSL_TYPE_UINT16
:
5058 case GLSL_TYPE_FLOAT
:
5060 case GLSL_TYPE_FLOAT16
:
5062 case GLSL_TYPE_INT64
:
5063 case GLSL_TYPE_UINT64
:
5065 case GLSL_TYPE_DOUBLE
:
5068 unreachable("unknown GLSL type");
5073 glsl_to_llvm_type(struct ac_llvm_context
*ac
,
5074 const struct glsl_type
*type
)
5076 if (glsl_type_is_scalar(type
)) {
5077 return glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
));
5080 if (glsl_type_is_vector(type
)) {
5081 return LLVMVectorType(
5082 glsl_base_to_llvm_type(ac
, glsl_get_base_type(type
)),
5083 glsl_get_vector_elements(type
));
5086 if (glsl_type_is_matrix(type
)) {
5087 return LLVMArrayType(
5088 glsl_to_llvm_type(ac
, glsl_get_column_type(type
)),
5089 glsl_get_matrix_columns(type
));
5092 if (glsl_type_is_array(type
)) {
5093 return LLVMArrayType(
5094 glsl_to_llvm_type(ac
, glsl_get_array_element(type
)),
5095 glsl_get_length(type
));
5098 assert(glsl_type_is_struct_or_ifc(type
));
5100 LLVMTypeRef member_types
[glsl_get_length(type
)];
5102 for (unsigned i
= 0; i
< glsl_get_length(type
); i
++) {
5104 glsl_to_llvm_type(ac
,
5105 glsl_get_struct_field(type
, i
));
5108 return LLVMStructTypeInContext(ac
->context
, member_types
,
5109 glsl_get_length(type
), false);
5112 static void visit_deref(struct ac_nir_context
*ctx
,
5113 nir_deref_instr
*instr
)
5115 if (instr
->mode
!= nir_var_mem_shared
&&
5116 instr
->mode
!= nir_var_mem_global
)
5119 LLVMValueRef result
= NULL
;
5120 switch(instr
->deref_type
) {
5121 case nir_deref_type_var
: {
5122 struct hash_entry
*entry
= _mesa_hash_table_search(ctx
->vars
, instr
->var
);
5123 result
= entry
->data
;
5126 case nir_deref_type_struct
:
5127 if (instr
->mode
== nir_var_mem_global
) {
5128 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
5129 uint64_t offset
= glsl_get_struct_field_offset(parent
->type
,
5130 instr
->strct
.index
);
5131 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
5132 LLVMConstInt(ctx
->ac
.i32
, offset
, 0));
5134 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
5135 LLVMConstInt(ctx
->ac
.i32
, instr
->strct
.index
, 0));
5138 case nir_deref_type_array
:
5139 if (instr
->mode
== nir_var_mem_global
) {
5140 nir_deref_instr
*parent
= nir_deref_instr_parent(instr
);
5141 unsigned stride
= glsl_get_explicit_stride(parent
->type
);
5143 if ((glsl_type_is_matrix(parent
->type
) &&
5144 glsl_matrix_type_is_row_major(parent
->type
)) ||
5145 (glsl_type_is_vector(parent
->type
) && stride
== 0))
5146 stride
= type_scalar_size_bytes(parent
->type
);
5149 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
5150 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
5151 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
5153 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
5155 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
5157 result
= ac_build_gep0(&ctx
->ac
, get_src(ctx
, instr
->parent
),
5158 get_src(ctx
, instr
->arr
.index
));
5161 case nir_deref_type_ptr_as_array
:
5162 if (instr
->mode
== nir_var_mem_global
) {
5163 unsigned stride
= nir_deref_instr_array_stride(instr
);
5165 LLVMValueRef index
= get_src(ctx
, instr
->arr
.index
);
5166 if (LLVMTypeOf(index
) != ctx
->ac
.i64
)
5167 index
= LLVMBuildZExt(ctx
->ac
.builder
, index
, ctx
->ac
.i64
, "");
5169 LLVMValueRef offset
= LLVMBuildMul(ctx
->ac
.builder
, index
, LLVMConstInt(ctx
->ac
.i64
, stride
, 0), "");
5171 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
), offset
);
5173 result
= ac_build_gep_ptr(&ctx
->ac
, get_src(ctx
, instr
->parent
),
5174 get_src(ctx
, instr
->arr
.index
));
5177 case nir_deref_type_cast
: {
5178 result
= get_src(ctx
, instr
->parent
);
5180 /* We can't use the structs from LLVM because the shader
5181 * specifies its own offsets. */
5182 LLVMTypeRef pointee_type
= ctx
->ac
.i8
;
5183 if (instr
->mode
== nir_var_mem_shared
)
5184 pointee_type
= glsl_to_llvm_type(&ctx
->ac
, instr
->type
);
5186 unsigned address_space
;
5188 switch(instr
->mode
) {
5189 case nir_var_mem_shared
:
5190 address_space
= AC_ADDR_SPACE_LDS
;
5192 case nir_var_mem_global
:
5193 address_space
= AC_ADDR_SPACE_GLOBAL
;
5196 unreachable("Unhandled address space");
5199 LLVMTypeRef type
= LLVMPointerType(pointee_type
, address_space
);
5201 if (LLVMTypeOf(result
) != type
) {
5202 if (LLVMGetTypeKind(LLVMTypeOf(result
)) == LLVMVectorTypeKind
) {
5203 result
= LLVMBuildBitCast(ctx
->ac
.builder
, result
,
5206 result
= LLVMBuildIntToPtr(ctx
->ac
.builder
, result
,
5213 unreachable("Unhandled deref_instr deref type");
5216 ctx
->ssa_defs
[instr
->dest
.ssa
.index
] = result
;
5219 static void visit_cf_list(struct ac_nir_context
*ctx
,
5220 struct exec_list
*list
);
5222 static void visit_block(struct ac_nir_context
*ctx
, nir_block
*block
)
5224 nir_foreach_instr(instr
, block
)
5226 switch (instr
->type
) {
5227 case nir_instr_type_alu
:
5228 visit_alu(ctx
, nir_instr_as_alu(instr
));
5230 case nir_instr_type_load_const
:
5231 visit_load_const(ctx
, nir_instr_as_load_const(instr
));
5233 case nir_instr_type_intrinsic
:
5234 visit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
5236 case nir_instr_type_tex
:
5237 visit_tex(ctx
, nir_instr_as_tex(instr
));
5239 case nir_instr_type_phi
:
5240 visit_phi(ctx
, nir_instr_as_phi(instr
));
5242 case nir_instr_type_ssa_undef
:
5243 visit_ssa_undef(ctx
, nir_instr_as_ssa_undef(instr
));
5245 case nir_instr_type_jump
:
5246 visit_jump(&ctx
->ac
, nir_instr_as_jump(instr
));
5248 case nir_instr_type_deref
:
5249 visit_deref(ctx
, nir_instr_as_deref(instr
));
5252 fprintf(stderr
, "Unknown NIR instr type: ");
5253 nir_print_instr(instr
, stderr
);
5254 fprintf(stderr
, "\n");
5259 _mesa_hash_table_insert(ctx
->defs
, block
,
5260 LLVMGetInsertBlock(ctx
->ac
.builder
));
5263 static void visit_if(struct ac_nir_context
*ctx
, nir_if
*if_stmt
)
5265 LLVMValueRef value
= get_src(ctx
, if_stmt
->condition
);
5267 nir_block
*then_block
=
5268 (nir_block
*) exec_list_get_head(&if_stmt
->then_list
);
5270 ac_build_uif(&ctx
->ac
, value
, then_block
->index
);
5272 visit_cf_list(ctx
, &if_stmt
->then_list
);
5274 if (!exec_list_is_empty(&if_stmt
->else_list
)) {
5275 nir_block
*else_block
=
5276 (nir_block
*) exec_list_get_head(&if_stmt
->else_list
);
5278 ac_build_else(&ctx
->ac
, else_block
->index
);
5279 visit_cf_list(ctx
, &if_stmt
->else_list
);
5282 ac_build_endif(&ctx
->ac
, then_block
->index
);
5285 static void visit_loop(struct ac_nir_context
*ctx
, nir_loop
*loop
)
5287 nir_block
*first_loop_block
=
5288 (nir_block
*) exec_list_get_head(&loop
->body
);
5290 ac_build_bgnloop(&ctx
->ac
, first_loop_block
->index
);
5292 visit_cf_list(ctx
, &loop
->body
);
5294 ac_build_endloop(&ctx
->ac
, first_loop_block
->index
);
5297 static void visit_cf_list(struct ac_nir_context
*ctx
,
5298 struct exec_list
*list
)
5300 foreach_list_typed(nir_cf_node
, node
, node
, list
)
5302 switch (node
->type
) {
5303 case nir_cf_node_block
:
5304 visit_block(ctx
, nir_cf_node_as_block(node
));
5307 case nir_cf_node_if
:
5308 visit_if(ctx
, nir_cf_node_as_if(node
));
5311 case nir_cf_node_loop
:
5312 visit_loop(ctx
, nir_cf_node_as_loop(node
));
5322 ac_handle_shader_output_decl(struct ac_llvm_context
*ctx
,
5323 struct ac_shader_abi
*abi
,
5324 struct nir_shader
*nir
,
5325 struct nir_variable
*variable
,
5326 gl_shader_stage stage
)
5328 unsigned output_loc
= variable
->data
.driver_location
/ 4;
5329 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
5331 /* tess ctrl has it's own load/store paths for outputs */
5332 if (stage
== MESA_SHADER_TESS_CTRL
)
5335 if (stage
== MESA_SHADER_VERTEX
||
5336 stage
== MESA_SHADER_TESS_EVAL
||
5337 stage
== MESA_SHADER_GEOMETRY
) {
5338 int idx
= variable
->data
.location
+ variable
->data
.index
;
5339 if (idx
== VARYING_SLOT_CLIP_DIST0
) {
5340 int length
= nir
->info
.clip_distance_array_size
+
5341 nir
->info
.cull_distance_array_size
;
5350 bool is_16bit
= glsl_type_is_16bit(glsl_without_array(variable
->type
));
5351 LLVMTypeRef type
= is_16bit
? ctx
->f16
: ctx
->f32
;
5352 for (unsigned i
= 0; i
< attrib_count
; ++i
) {
5353 for (unsigned chan
= 0; chan
< 4; chan
++) {
5354 abi
->outputs
[ac_llvm_reg_index_soa(output_loc
+ i
, chan
)] =
5355 ac_build_alloca_undef(ctx
, type
, "");
5361 setup_locals(struct ac_nir_context
*ctx
,
5362 struct nir_function
*func
)
5365 ctx
->num_locals
= 0;
5366 nir_foreach_function_temp_variable(variable
, func
->impl
) {
5367 unsigned attrib_count
= glsl_count_attribute_slots(variable
->type
, false);
5368 variable
->data
.driver_location
= ctx
->num_locals
* 4;
5369 variable
->data
.location_frac
= 0;
5370 ctx
->num_locals
+= attrib_count
;
5372 ctx
->locals
= malloc(4 * ctx
->num_locals
* sizeof(LLVMValueRef
));
5376 for (i
= 0; i
< ctx
->num_locals
; i
++) {
5377 for (j
= 0; j
< 4; j
++) {
5378 ctx
->locals
[i
* 4 + j
] =
5379 ac_build_alloca_undef(&ctx
->ac
, ctx
->ac
.f32
, "temp");
5385 setup_scratch(struct ac_nir_context
*ctx
,
5386 struct nir_shader
*shader
)
5388 if (shader
->scratch_size
== 0)
5391 ctx
->scratch
= ac_build_alloca_undef(&ctx
->ac
,
5392 LLVMArrayType(ctx
->ac
.i8
, shader
->scratch_size
),
5397 setup_constant_data(struct ac_nir_context
*ctx
,
5398 struct nir_shader
*shader
)
5400 if (!shader
->constant_data
)
5404 LLVMConstStringInContext(ctx
->ac
.context
,
5405 shader
->constant_data
,
5406 shader
->constant_data_size
,
5408 LLVMTypeRef type
= LLVMArrayType(ctx
->ac
.i8
, shader
->constant_data_size
);
5410 /* We want to put the constant data in the CONST address space so that
5411 * we can use scalar loads. However, LLVM versions before 10 put these
5412 * variables in the same section as the code, which is unacceptable
5413 * for RadeonSI as it needs to relocate all the data sections after
5414 * the code sections. See https://reviews.llvm.org/D65813.
5416 unsigned address_space
=
5417 LLVM_VERSION_MAJOR
< 10 ? AC_ADDR_SPACE_GLOBAL
: AC_ADDR_SPACE_CONST
;
5419 LLVMValueRef global
=
5420 LLVMAddGlobalInAddressSpace(ctx
->ac
.module
, type
,
5424 LLVMSetInitializer(global
, data
);
5425 LLVMSetGlobalConstant(global
, true);
5426 LLVMSetVisibility(global
, LLVMHiddenVisibility
);
5427 ctx
->constant_data
= global
;
5431 setup_shared(struct ac_nir_context
*ctx
,
5432 struct nir_shader
*nir
)
5437 LLVMTypeRef type
= LLVMArrayType(ctx
->ac
.i8
,
5438 nir
->info
.cs
.shared_size
);
5441 LLVMAddGlobalInAddressSpace(ctx
->ac
.module
, type
,
5444 LLVMSetAlignment(lds
, 64 * 1024);
5446 ctx
->ac
.lds
= LLVMBuildBitCast(ctx
->ac
.builder
, lds
,
5447 LLVMPointerType(ctx
->ac
.i8
,
5448 AC_ADDR_SPACE_LDS
), "");
5451 void ac_nir_translate(struct ac_llvm_context
*ac
, struct ac_shader_abi
*abi
,
5452 const struct ac_shader_args
*args
, struct nir_shader
*nir
)
5454 struct ac_nir_context ctx
= {};
5455 struct nir_function
*func
;
5461 ctx
.stage
= nir
->info
.stage
;
5462 ctx
.info
= &nir
->info
;
5464 ctx
.main_function
= LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
.ac
.builder
));
5466 /* TODO: remove this after RADV switches to lowered IO */
5467 if (!nir
->info
.io_lowered
) {
5468 nir_foreach_shader_out_variable(variable
, nir
) {
5469 ac_handle_shader_output_decl(&ctx
.ac
, ctx
.abi
, nir
, variable
,
5474 ctx
.defs
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5475 _mesa_key_pointer_equal
);
5476 ctx
.phis
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5477 _mesa_key_pointer_equal
);
5478 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5479 _mesa_key_pointer_equal
);
5481 if (ctx
.abi
->kill_ps_if_inf_interp
)
5482 ctx
.verified_interp
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
5483 _mesa_key_pointer_equal
);
5485 func
= (struct nir_function
*)exec_list_get_head(&nir
->functions
);
5487 nir_index_ssa_defs(func
->impl
);
5488 ctx
.ssa_defs
= calloc(func
->impl
->ssa_alloc
, sizeof(LLVMValueRef
));
5490 setup_locals(&ctx
, func
);
5491 setup_scratch(&ctx
, nir
);
5492 setup_constant_data(&ctx
, nir
);
5494 if (gl_shader_stage_is_compute(nir
->info
.stage
))
5495 setup_shared(&ctx
, nir
);
5497 if (nir
->info
.stage
== MESA_SHADER_FRAGMENT
&& nir
->info
.fs
.uses_demote
) {
5498 ctx
.ac
.postponed_kill
= ac_build_alloca_undef(&ctx
.ac
, ac
->i1
, "");
5499 /* true = don't kill. */
5500 LLVMBuildStore(ctx
.ac
.builder
, ctx
.ac
.i1true
, ctx
.ac
.postponed_kill
);
5503 visit_cf_list(&ctx
, &func
->impl
->body
);
5504 phi_post_pass(&ctx
);
5506 if (ctx
.ac
.postponed_kill
)
5507 ac_build_kill_if_false(&ctx
.ac
, LLVMBuildLoad(ctx
.ac
.builder
,
5508 ctx
.ac
.postponed_kill
, ""));
5510 if (!gl_shader_stage_is_compute(nir
->info
.stage
))
5511 ctx
.abi
->emit_outputs(ctx
.abi
, AC_LLVM_MAX_OUTPUTS
,
5516 ralloc_free(ctx
.defs
);
5517 ralloc_free(ctx
.phis
);
5518 ralloc_free(ctx
.vars
);
5519 if (ctx
.abi
->kill_ps_if_inf_interp
)
5520 ralloc_free(ctx
.verified_interp
);
5524 ac_lower_indirect_derefs(struct nir_shader
*nir
, enum chip_class chip_class
)
5526 bool progress
= false;
5528 /* Lower large variables to scratch first so that we won't bloat the
5529 * shader by generating large if ladders for them. We later lower
5530 * scratch to alloca's, assuming LLVM won't generate VGPR indexing.
5532 NIR_PASS(progress
, nir
, nir_lower_vars_to_scratch
,
5533 nir_var_function_temp
,
5535 glsl_get_natural_size_align_bytes
);
5537 /* While it would be nice not to have this flag, we are constrained
5538 * by the reality that LLVM 9.0 has buggy VGPR indexing on GFX9.
5540 bool llvm_has_working_vgpr_indexing
= chip_class
!= GFX9
;
5542 /* TODO: Indirect indexing of GS inputs is unimplemented.
5544 * TCS and TES load inputs directly from LDS or offchip memory, so
5545 * indirect indexing is trivial.
5547 nir_variable_mode indirect_mask
= 0;
5548 if (nir
->info
.stage
== MESA_SHADER_GEOMETRY
||
5549 (nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
&&
5550 nir
->info
.stage
!= MESA_SHADER_TESS_EVAL
&&
5551 !llvm_has_working_vgpr_indexing
)) {
5552 indirect_mask
|= nir_var_shader_in
;
5554 if (!llvm_has_working_vgpr_indexing
&&
5555 nir
->info
.stage
!= MESA_SHADER_TESS_CTRL
)
5556 indirect_mask
|= nir_var_shader_out
;
5558 /* TODO: We shouldn't need to do this, however LLVM isn't currently
5559 * smart enough to handle indirects without causing excess spilling
5560 * causing the gpu to hang.
5562 * See the following thread for more details of the problem:
5563 * https://lists.freedesktop.org/archives/mesa-dev/2017-July/162106.html
5565 indirect_mask
|= nir_var_function_temp
;
5567 progress
|= nir_lower_indirect_derefs(nir
, indirect_mask
, UINT32_MAX
);
5572 get_inst_tessfactor_writemask(nir_intrinsic_instr
*intrin
)
5574 if (intrin
->intrinsic
!= nir_intrinsic_store_output
)
5577 unsigned writemask
= nir_intrinsic_write_mask(intrin
) <<
5578 nir_intrinsic_component(intrin
);
5579 unsigned location
= nir_intrinsic_io_semantics(intrin
).location
;
5581 if (location
== VARYING_SLOT_TESS_LEVEL_OUTER
)
5582 return writemask
<< 4;
5583 else if (location
== VARYING_SLOT_TESS_LEVEL_INNER
)
5590 scan_tess_ctrl(nir_cf_node
*cf_node
, unsigned *upper_block_tf_writemask
,
5591 unsigned *cond_block_tf_writemask
,
5592 bool *tessfactors_are_def_in_all_invocs
, bool is_nested_cf
)
5594 switch (cf_node
->type
) {
5595 case nir_cf_node_block
: {
5596 nir_block
*block
= nir_cf_node_as_block(cf_node
);
5597 nir_foreach_instr(instr
, block
) {
5598 if (instr
->type
!= nir_instr_type_intrinsic
)
5601 nir_intrinsic_instr
*intrin
= nir_instr_as_intrinsic(instr
);
5602 if (intrin
->intrinsic
== nir_intrinsic_control_barrier
) {
5604 /* If we find a barrier in nested control flow put this in the
5605 * too hard basket. In GLSL this is not possible but it is in
5609 *tessfactors_are_def_in_all_invocs
= false;
5613 /* The following case must be prevented:
5614 * gl_TessLevelInner = ...;
5616 * if (gl_InvocationID == 1)
5617 * gl_TessLevelInner = ...;
5619 * If you consider disjoint code segments separated by barriers, each
5620 * such segment that writes tess factor channels should write the same
5621 * channels in all codepaths within that segment.
5623 if (upper_block_tf_writemask
|| cond_block_tf_writemask
) {
5624 /* Accumulate the result: */
5625 *tessfactors_are_def_in_all_invocs
&=
5626 !(*cond_block_tf_writemask
& ~(*upper_block_tf_writemask
));
5628 /* Analyze the next code segment from scratch. */
5629 *upper_block_tf_writemask
= 0;
5630 *cond_block_tf_writemask
= 0;
5633 *upper_block_tf_writemask
|= get_inst_tessfactor_writemask(intrin
);
5638 case nir_cf_node_if
: {
5639 unsigned then_tessfactor_writemask
= 0;
5640 unsigned else_tessfactor_writemask
= 0;
5642 nir_if
*if_stmt
= nir_cf_node_as_if(cf_node
);
5643 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->then_list
) {
5644 scan_tess_ctrl(nested_node
, &then_tessfactor_writemask
,
5645 cond_block_tf_writemask
,
5646 tessfactors_are_def_in_all_invocs
, true);
5649 foreach_list_typed(nir_cf_node
, nested_node
, node
, &if_stmt
->else_list
) {
5650 scan_tess_ctrl(nested_node
, &else_tessfactor_writemask
,
5651 cond_block_tf_writemask
,
5652 tessfactors_are_def_in_all_invocs
, true);
5655 if (then_tessfactor_writemask
|| else_tessfactor_writemask
) {
5656 /* If both statements write the same tess factor channels,
5657 * we can say that the upper block writes them too.
5659 *upper_block_tf_writemask
|= then_tessfactor_writemask
&
5660 else_tessfactor_writemask
;
5661 *cond_block_tf_writemask
|= then_tessfactor_writemask
|
5662 else_tessfactor_writemask
;
5667 case nir_cf_node_loop
: {
5668 nir_loop
*loop
= nir_cf_node_as_loop(cf_node
);
5669 foreach_list_typed(nir_cf_node
, nested_node
, node
, &loop
->body
) {
5670 scan_tess_ctrl(nested_node
, cond_block_tf_writemask
,
5671 cond_block_tf_writemask
,
5672 tessfactors_are_def_in_all_invocs
, true);
5678 unreachable("unknown cf node type");
5683 ac_are_tessfactors_def_in_all_invocs(const struct nir_shader
*nir
)
5685 assert(nir
->info
.stage
== MESA_SHADER_TESS_CTRL
);
5687 /* The pass works as follows:
5688 * If all codepaths write tess factors, we can say that all
5689 * invocations define tess factors.
5691 * Each tess factor channel is tracked separately.
5693 unsigned main_block_tf_writemask
= 0; /* if main block writes tess factors */
5694 unsigned cond_block_tf_writemask
= 0; /* if cond block writes tess factors */
5696 /* Initial value = true. Here the pass will accumulate results from
5697 * multiple segments surrounded by barriers. If tess factors aren't
5698 * written at all, it's a shader bug and we don't care if this will be
5701 bool tessfactors_are_def_in_all_invocs
= true;
5703 nir_foreach_function(function
, nir
) {
5704 if (function
->impl
) {
5705 foreach_list_typed(nir_cf_node
, node
, node
, &function
->impl
->body
) {
5706 scan_tess_ctrl(node
, &main_block_tf_writemask
,
5707 &cond_block_tf_writemask
,
5708 &tessfactors_are_def_in_all_invocs
,
5714 /* Accumulate the result for the last code segment separated by a
5717 if (main_block_tf_writemask
|| cond_block_tf_writemask
) {
5718 tessfactors_are_def_in_all_invocs
&=
5719 !(cond_block_tf_writemask
& ~main_block_tf_writemask
);
5722 return tessfactors_are_def_in_all_invocs
;