2 * Copyright 2014 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sub license, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
15 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
17 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
18 * USE OR OTHER DEALINGS IN THE SOFTWARE.
20 * The above copyright notice and this permission notice (including the
21 * next paragraph) shall be included in all copies or substantial portions
25 /* based on pieces from si_pipe.c and radeon_llvm_emit.c */
26 #include "ac_llvm_build.h"
28 #include <llvm-c/Core.h>
29 #include <llvm/Config/llvm-config.h>
31 #include "c11/threads.h"
36 #include "ac_llvm_util.h"
37 #include "ac_shader_util.h"
38 #include "ac_exp_param.h"
39 #include "util/bitscan.h"
40 #include "util/macros.h"
41 #include "util/u_atomic.h"
42 #include "util/u_math.h"
45 #include "shader_enums.h"
47 #define AC_LLVM_INITIAL_CF_DEPTH 4
49 /* Data for if/else/endif and bgnloop/endloop control flow structures.
52 /* Loop exit or next part of if/else/endif. */
53 LLVMBasicBlockRef next_block
;
54 LLVMBasicBlockRef loop_entry_block
;
57 /* Initialize module-independent parts of the context.
59 * The caller is responsible for initializing ctx::module and ctx::builder.
62 ac_llvm_context_init(struct ac_llvm_context
*ctx
,
63 struct ac_llvm_compiler
*compiler
,
64 enum chip_class chip_class
, enum radeon_family family
,
65 enum ac_float_mode float_mode
, unsigned wave_size
,
66 unsigned ballot_mask_bits
)
70 ctx
->context
= LLVMContextCreate();
72 ctx
->chip_class
= chip_class
;
74 ctx
->wave_size
= wave_size
;
75 ctx
->ballot_mask_bits
= ballot_mask_bits
;
76 ctx
->float_mode
= float_mode
;
77 ctx
->module
= ac_create_module(wave_size
== 32 ? compiler
->tm_wave32
80 ctx
->builder
= ac_create_builder(ctx
->context
, float_mode
);
82 ctx
->voidt
= LLVMVoidTypeInContext(ctx
->context
);
83 ctx
->i1
= LLVMInt1TypeInContext(ctx
->context
);
84 ctx
->i8
= LLVMInt8TypeInContext(ctx
->context
);
85 ctx
->i16
= LLVMIntTypeInContext(ctx
->context
, 16);
86 ctx
->i32
= LLVMIntTypeInContext(ctx
->context
, 32);
87 ctx
->i64
= LLVMIntTypeInContext(ctx
->context
, 64);
88 ctx
->intptr
= ctx
->i32
;
89 ctx
->f16
= LLVMHalfTypeInContext(ctx
->context
);
90 ctx
->f32
= LLVMFloatTypeInContext(ctx
->context
);
91 ctx
->f64
= LLVMDoubleTypeInContext(ctx
->context
);
92 ctx
->v2i16
= LLVMVectorType(ctx
->i16
, 2);
93 ctx
->v2i32
= LLVMVectorType(ctx
->i32
, 2);
94 ctx
->v3i32
= LLVMVectorType(ctx
->i32
, 3);
95 ctx
->v4i32
= LLVMVectorType(ctx
->i32
, 4);
96 ctx
->v2f32
= LLVMVectorType(ctx
->f32
, 2);
97 ctx
->v3f32
= LLVMVectorType(ctx
->f32
, 3);
98 ctx
->v4f32
= LLVMVectorType(ctx
->f32
, 4);
99 ctx
->v8i32
= LLVMVectorType(ctx
->i32
, 8);
100 ctx
->iN_wavemask
= LLVMIntTypeInContext(ctx
->context
, ctx
->wave_size
);
101 ctx
->iN_ballotmask
= LLVMIntTypeInContext(ctx
->context
, ballot_mask_bits
);
103 ctx
->i8_0
= LLVMConstInt(ctx
->i8
, 0, false);
104 ctx
->i8_1
= LLVMConstInt(ctx
->i8
, 1, false);
105 ctx
->i16_0
= LLVMConstInt(ctx
->i16
, 0, false);
106 ctx
->i16_1
= LLVMConstInt(ctx
->i16
, 1, false);
107 ctx
->i32_0
= LLVMConstInt(ctx
->i32
, 0, false);
108 ctx
->i32_1
= LLVMConstInt(ctx
->i32
, 1, false);
109 ctx
->i64_0
= LLVMConstInt(ctx
->i64
, 0, false);
110 ctx
->i64_1
= LLVMConstInt(ctx
->i64
, 1, false);
111 ctx
->f16_0
= LLVMConstReal(ctx
->f16
, 0.0);
112 ctx
->f16_1
= LLVMConstReal(ctx
->f16
, 1.0);
113 ctx
->f32_0
= LLVMConstReal(ctx
->f32
, 0.0);
114 ctx
->f32_1
= LLVMConstReal(ctx
->f32
, 1.0);
115 ctx
->f64_0
= LLVMConstReal(ctx
->f64
, 0.0);
116 ctx
->f64_1
= LLVMConstReal(ctx
->f64
, 1.0);
118 ctx
->i1false
= LLVMConstInt(ctx
->i1
, 0, false);
119 ctx
->i1true
= LLVMConstInt(ctx
->i1
, 1, false);
121 ctx
->range_md_kind
= LLVMGetMDKindIDInContext(ctx
->context
,
124 ctx
->invariant_load_md_kind
= LLVMGetMDKindIDInContext(ctx
->context
,
125 "invariant.load", 14);
127 ctx
->fpmath_md_kind
= LLVMGetMDKindIDInContext(ctx
->context
, "fpmath", 6);
129 args
[0] = LLVMConstReal(ctx
->f32
, 2.5);
130 ctx
->fpmath_md_2p5_ulp
= LLVMMDNodeInContext(ctx
->context
, args
, 1);
132 ctx
->uniform_md_kind
= LLVMGetMDKindIDInContext(ctx
->context
,
133 "amdgpu.uniform", 14);
135 ctx
->empty_md
= LLVMMDNodeInContext(ctx
->context
, NULL
, 0);
136 ctx
->flow
= calloc(1, sizeof(*ctx
->flow
));
140 ac_llvm_context_dispose(struct ac_llvm_context
*ctx
)
142 free(ctx
->flow
->stack
);
148 ac_get_llvm_num_components(LLVMValueRef value
)
150 LLVMTypeRef type
= LLVMTypeOf(value
);
151 unsigned num_components
= LLVMGetTypeKind(type
) == LLVMVectorTypeKind
152 ? LLVMGetVectorSize(type
)
154 return num_components
;
158 ac_llvm_extract_elem(struct ac_llvm_context
*ac
,
162 if (LLVMGetTypeKind(LLVMTypeOf(value
)) != LLVMVectorTypeKind
) {
167 return LLVMBuildExtractElement(ac
->builder
, value
,
168 LLVMConstInt(ac
->i32
, index
, false), "");
172 ac_get_elem_bits(struct ac_llvm_context
*ctx
, LLVMTypeRef type
)
174 if (LLVMGetTypeKind(type
) == LLVMVectorTypeKind
)
175 type
= LLVMGetElementType(type
);
177 if (LLVMGetTypeKind(type
) == LLVMIntegerTypeKind
)
178 return LLVMGetIntTypeWidth(type
);
180 if (LLVMGetTypeKind(type
) == LLVMPointerTypeKind
) {
181 if (LLVMGetPointerAddressSpace(type
) == AC_ADDR_SPACE_LDS
)
185 if (type
== ctx
->f16
)
187 if (type
== ctx
->f32
)
189 if (type
== ctx
->f64
)
192 unreachable("Unhandled type kind in get_elem_bits");
196 ac_get_type_size(LLVMTypeRef type
)
198 LLVMTypeKind kind
= LLVMGetTypeKind(type
);
201 case LLVMIntegerTypeKind
:
202 return LLVMGetIntTypeWidth(type
) / 8;
203 case LLVMHalfTypeKind
:
205 case LLVMFloatTypeKind
:
207 case LLVMDoubleTypeKind
:
209 case LLVMPointerTypeKind
:
210 if (LLVMGetPointerAddressSpace(type
) == AC_ADDR_SPACE_CONST_32BIT
)
213 case LLVMVectorTypeKind
:
214 return LLVMGetVectorSize(type
) *
215 ac_get_type_size(LLVMGetElementType(type
));
216 case LLVMArrayTypeKind
:
217 return LLVMGetArrayLength(type
) *
218 ac_get_type_size(LLVMGetElementType(type
));
225 static LLVMTypeRef
to_integer_type_scalar(struct ac_llvm_context
*ctx
, LLVMTypeRef t
)
229 else if (t
== ctx
->f16
|| t
== ctx
->i16
)
231 else if (t
== ctx
->f32
|| t
== ctx
->i32
)
233 else if (t
== ctx
->f64
|| t
== ctx
->i64
)
236 unreachable("Unhandled integer size");
240 ac_to_integer_type(struct ac_llvm_context
*ctx
, LLVMTypeRef t
)
242 if (LLVMGetTypeKind(t
) == LLVMVectorTypeKind
) {
243 LLVMTypeRef elem_type
= LLVMGetElementType(t
);
244 return LLVMVectorType(to_integer_type_scalar(ctx
, elem_type
),
245 LLVMGetVectorSize(t
));
247 if (LLVMGetTypeKind(t
) == LLVMPointerTypeKind
) {
248 switch (LLVMGetPointerAddressSpace(t
)) {
249 case AC_ADDR_SPACE_GLOBAL
:
251 case AC_ADDR_SPACE_CONST_32BIT
:
252 case AC_ADDR_SPACE_LDS
:
255 unreachable("unhandled address space");
258 return to_integer_type_scalar(ctx
, t
);
262 ac_to_integer(struct ac_llvm_context
*ctx
, LLVMValueRef v
)
264 LLVMTypeRef type
= LLVMTypeOf(v
);
265 if (LLVMGetTypeKind(type
) == LLVMPointerTypeKind
) {
266 return LLVMBuildPtrToInt(ctx
->builder
, v
, ac_to_integer_type(ctx
, type
), "");
268 return LLVMBuildBitCast(ctx
->builder
, v
, ac_to_integer_type(ctx
, type
), "");
272 ac_to_integer_or_pointer(struct ac_llvm_context
*ctx
, LLVMValueRef v
)
274 LLVMTypeRef type
= LLVMTypeOf(v
);
275 if (LLVMGetTypeKind(type
) == LLVMPointerTypeKind
)
277 return ac_to_integer(ctx
, v
);
280 static LLVMTypeRef
to_float_type_scalar(struct ac_llvm_context
*ctx
, LLVMTypeRef t
)
284 else if (t
== ctx
->i16
|| t
== ctx
->f16
)
286 else if (t
== ctx
->i32
|| t
== ctx
->f32
)
288 else if (t
== ctx
->i64
|| t
== ctx
->f64
)
291 unreachable("Unhandled float size");
295 ac_to_float_type(struct ac_llvm_context
*ctx
, LLVMTypeRef t
)
297 if (LLVMGetTypeKind(t
) == LLVMVectorTypeKind
) {
298 LLVMTypeRef elem_type
= LLVMGetElementType(t
);
299 return LLVMVectorType(to_float_type_scalar(ctx
, elem_type
),
300 LLVMGetVectorSize(t
));
302 return to_float_type_scalar(ctx
, t
);
306 ac_to_float(struct ac_llvm_context
*ctx
, LLVMValueRef v
)
308 LLVMTypeRef type
= LLVMTypeOf(v
);
309 return LLVMBuildBitCast(ctx
->builder
, v
, ac_to_float_type(ctx
, type
), "");
314 ac_build_intrinsic(struct ac_llvm_context
*ctx
, const char *name
,
315 LLVMTypeRef return_type
, LLVMValueRef
*params
,
316 unsigned param_count
, unsigned attrib_mask
)
318 LLVMValueRef function
, call
;
319 bool set_callsite_attrs
= !(attrib_mask
& AC_FUNC_ATTR_LEGACY
);
321 function
= LLVMGetNamedFunction(ctx
->module
, name
);
323 LLVMTypeRef param_types
[32], function_type
;
326 assert(param_count
<= 32);
328 for (i
= 0; i
< param_count
; ++i
) {
330 param_types
[i
] = LLVMTypeOf(params
[i
]);
333 LLVMFunctionType(return_type
, param_types
, param_count
, 0);
334 function
= LLVMAddFunction(ctx
->module
, name
, function_type
);
336 LLVMSetFunctionCallConv(function
, LLVMCCallConv
);
337 LLVMSetLinkage(function
, LLVMExternalLinkage
);
339 if (!set_callsite_attrs
)
340 ac_add_func_attributes(ctx
->context
, function
, attrib_mask
);
343 call
= LLVMBuildCall(ctx
->builder
, function
, params
, param_count
, "");
344 if (set_callsite_attrs
)
345 ac_add_func_attributes(ctx
->context
, call
, attrib_mask
);
350 * Given the i32 or vNi32 \p type, generate the textual name (e.g. for use with
353 void ac_build_type_name_for_intr(LLVMTypeRef type
, char *buf
, unsigned bufsize
)
355 LLVMTypeRef elem_type
= type
;
357 assert(bufsize
>= 8);
359 if (LLVMGetTypeKind(type
) == LLVMVectorTypeKind
) {
360 int ret
= snprintf(buf
, bufsize
, "v%u",
361 LLVMGetVectorSize(type
));
363 char *type_name
= LLVMPrintTypeToString(type
);
364 fprintf(stderr
, "Error building type name for: %s\n",
366 LLVMDisposeMessage(type_name
);
369 elem_type
= LLVMGetElementType(type
);
373 switch (LLVMGetTypeKind(elem_type
)) {
375 case LLVMIntegerTypeKind
:
376 snprintf(buf
, bufsize
, "i%d", LLVMGetIntTypeWidth(elem_type
));
378 case LLVMHalfTypeKind
:
379 snprintf(buf
, bufsize
, "f16");
381 case LLVMFloatTypeKind
:
382 snprintf(buf
, bufsize
, "f32");
384 case LLVMDoubleTypeKind
:
385 snprintf(buf
, bufsize
, "f64");
391 * Helper function that builds an LLVM IR PHI node and immediately adds
395 ac_build_phi(struct ac_llvm_context
*ctx
, LLVMTypeRef type
,
396 unsigned count_incoming
, LLVMValueRef
*values
,
397 LLVMBasicBlockRef
*blocks
)
399 LLVMValueRef phi
= LLVMBuildPhi(ctx
->builder
, type
, "");
400 LLVMAddIncoming(phi
, values
, blocks
, count_incoming
);
404 void ac_build_s_barrier(struct ac_llvm_context
*ctx
)
406 ac_build_intrinsic(ctx
, "llvm.amdgcn.s.barrier", ctx
->voidt
, NULL
,
407 0, AC_FUNC_ATTR_CONVERGENT
);
410 /* Prevent optimizations (at least of memory accesses) across the current
411 * point in the program by emitting empty inline assembly that is marked as
412 * having side effects.
414 * Optionally, a value can be passed through the inline assembly to prevent
415 * LLVM from hoisting calls to ReadNone functions.
418 ac_build_optimization_barrier(struct ac_llvm_context
*ctx
,
421 static int counter
= 0;
423 LLVMBuilderRef builder
= ctx
->builder
;
426 snprintf(code
, sizeof(code
), "; %d", p_atomic_inc_return(&counter
));
429 LLVMTypeRef ftype
= LLVMFunctionType(ctx
->voidt
, NULL
, 0, false);
430 LLVMValueRef inlineasm
= LLVMConstInlineAsm(ftype
, code
, "", true, false);
431 LLVMBuildCall(builder
, inlineasm
, NULL
, 0, "");
433 LLVMTypeRef ftype
= LLVMFunctionType(ctx
->i32
, &ctx
->i32
, 1, false);
434 LLVMValueRef inlineasm
= LLVMConstInlineAsm(ftype
, code
, "=v,0", true, false);
435 LLVMTypeRef type
= LLVMTypeOf(*pvgpr
);
436 unsigned bitsize
= ac_get_elem_bits(ctx
, type
);
437 LLVMValueRef vgpr
= *pvgpr
;
438 LLVMTypeRef vgpr_type
;
443 vgpr
= LLVMBuildZExt(ctx
->builder
, vgpr
, ctx
->i32
, "");
445 vgpr_type
= LLVMTypeOf(vgpr
);
446 vgpr_size
= ac_get_type_size(vgpr_type
);
448 assert(vgpr_size
% 4 == 0);
450 vgpr
= LLVMBuildBitCast(builder
, vgpr
, LLVMVectorType(ctx
->i32
, vgpr_size
/ 4), "");
451 vgpr0
= LLVMBuildExtractElement(builder
, vgpr
, ctx
->i32_0
, "");
452 vgpr0
= LLVMBuildCall(builder
, inlineasm
, &vgpr0
, 1, "");
453 vgpr
= LLVMBuildInsertElement(builder
, vgpr
, vgpr0
, ctx
->i32_0
, "");
454 vgpr
= LLVMBuildBitCast(builder
, vgpr
, vgpr_type
, "");
457 vgpr
= LLVMBuildTrunc(builder
, vgpr
, type
, "");
464 ac_build_shader_clock(struct ac_llvm_context
*ctx
)
466 const char *intr
= LLVM_VERSION_MAJOR
>= 9 && ctx
->chip_class
>= GFX8
?
467 "llvm.amdgcn.s.memrealtime" : "llvm.readcyclecounter";
468 LLVMValueRef tmp
= ac_build_intrinsic(ctx
, intr
, ctx
->i64
, NULL
, 0, 0);
469 return LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->v2i32
, "");
473 ac_build_ballot(struct ac_llvm_context
*ctx
,
478 if (LLVM_VERSION_MAJOR
>= 9) {
479 if (ctx
->wave_size
== 64)
480 name
= "llvm.amdgcn.icmp.i64.i32";
482 name
= "llvm.amdgcn.icmp.i32.i32";
484 name
= "llvm.amdgcn.icmp.i32";
486 LLVMValueRef args
[3] = {
489 LLVMConstInt(ctx
->i32
, LLVMIntNE
, 0)
492 /* We currently have no other way to prevent LLVM from lifting the icmp
493 * calls to a dominating basic block.
495 ac_build_optimization_barrier(ctx
, &args
[0]);
497 args
[0] = ac_to_integer(ctx
, args
[0]);
499 return ac_build_intrinsic(ctx
, name
, ctx
->iN_wavemask
, args
, 3,
500 AC_FUNC_ATTR_NOUNWIND
|
501 AC_FUNC_ATTR_READNONE
|
502 AC_FUNC_ATTR_CONVERGENT
);
505 LLVMValueRef
ac_get_i1_sgpr_mask(struct ac_llvm_context
*ctx
,
508 const char *name
= LLVM_VERSION_MAJOR
>= 9 ? "llvm.amdgcn.icmp.i64.i1" : "llvm.amdgcn.icmp.i1";
509 LLVMValueRef args
[3] = {
512 LLVMConstInt(ctx
->i32
, LLVMIntNE
, 0),
515 return ac_build_intrinsic(ctx
, name
, ctx
->i64
, args
, 3,
516 AC_FUNC_ATTR_NOUNWIND
|
517 AC_FUNC_ATTR_READNONE
|
518 AC_FUNC_ATTR_CONVERGENT
);
522 ac_build_vote_all(struct ac_llvm_context
*ctx
, LLVMValueRef value
)
524 LLVMValueRef active_set
= ac_build_ballot(ctx
, ctx
->i32_1
);
525 LLVMValueRef vote_set
= ac_build_ballot(ctx
, value
);
526 return LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, vote_set
, active_set
, "");
530 ac_build_vote_any(struct ac_llvm_context
*ctx
, LLVMValueRef value
)
532 LLVMValueRef vote_set
= ac_build_ballot(ctx
, value
);
533 return LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, vote_set
,
534 LLVMConstInt(ctx
->iN_wavemask
, 0, 0), "");
538 ac_build_vote_eq(struct ac_llvm_context
*ctx
, LLVMValueRef value
)
540 LLVMValueRef active_set
= ac_build_ballot(ctx
, ctx
->i32_1
);
541 LLVMValueRef vote_set
= ac_build_ballot(ctx
, value
);
543 LLVMValueRef all
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
,
544 vote_set
, active_set
, "");
545 LLVMValueRef none
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
,
547 LLVMConstInt(ctx
->iN_wavemask
, 0, 0), "");
548 return LLVMBuildOr(ctx
->builder
, all
, none
, "");
552 ac_build_varying_gather_values(struct ac_llvm_context
*ctx
, LLVMValueRef
*values
,
553 unsigned value_count
, unsigned component
)
555 LLVMValueRef vec
= NULL
;
557 if (value_count
== 1) {
558 return values
[component
];
559 } else if (!value_count
)
560 unreachable("value_count is 0");
562 for (unsigned i
= component
; i
< value_count
+ component
; i
++) {
563 LLVMValueRef value
= values
[i
];
566 vec
= LLVMGetUndef( LLVMVectorType(LLVMTypeOf(value
), value_count
));
567 LLVMValueRef index
= LLVMConstInt(ctx
->i32
, i
- component
, false);
568 vec
= LLVMBuildInsertElement(ctx
->builder
, vec
, value
, index
, "");
574 ac_build_gather_values_extended(struct ac_llvm_context
*ctx
,
575 LLVMValueRef
*values
,
576 unsigned value_count
,
577 unsigned value_stride
,
581 LLVMBuilderRef builder
= ctx
->builder
;
582 LLVMValueRef vec
= NULL
;
585 if (value_count
== 1 && !always_vector
) {
587 return LLVMBuildLoad(builder
, values
[0], "");
589 } else if (!value_count
)
590 unreachable("value_count is 0");
592 for (i
= 0; i
< value_count
; i
++) {
593 LLVMValueRef value
= values
[i
* value_stride
];
595 value
= LLVMBuildLoad(builder
, value
, "");
598 vec
= LLVMGetUndef( LLVMVectorType(LLVMTypeOf(value
), value_count
));
599 LLVMValueRef index
= LLVMConstInt(ctx
->i32
, i
, false);
600 vec
= LLVMBuildInsertElement(builder
, vec
, value
, index
, "");
606 ac_build_gather_values(struct ac_llvm_context
*ctx
,
607 LLVMValueRef
*values
,
608 unsigned value_count
)
610 return ac_build_gather_values_extended(ctx
, values
, value_count
, 1, false, false);
613 /* Expand a scalar or vector to <dst_channels x type> by filling the remaining
614 * channels with undef. Extract at most src_channels components from the input.
617 ac_build_expand(struct ac_llvm_context
*ctx
,
619 unsigned src_channels
,
620 unsigned dst_channels
)
622 LLVMTypeRef elemtype
;
623 LLVMValueRef chan
[dst_channels
];
625 if (LLVMGetTypeKind(LLVMTypeOf(value
)) == LLVMVectorTypeKind
) {
626 unsigned vec_size
= LLVMGetVectorSize(LLVMTypeOf(value
));
628 if (src_channels
== dst_channels
&& vec_size
== dst_channels
)
631 src_channels
= MIN2(src_channels
, vec_size
);
633 for (unsigned i
= 0; i
< src_channels
; i
++)
634 chan
[i
] = ac_llvm_extract_elem(ctx
, value
, i
);
636 elemtype
= LLVMGetElementType(LLVMTypeOf(value
));
639 assert(src_channels
== 1);
642 elemtype
= LLVMTypeOf(value
);
645 for (unsigned i
= src_channels
; i
< dst_channels
; i
++)
646 chan
[i
] = LLVMGetUndef(elemtype
);
648 return ac_build_gather_values(ctx
, chan
, dst_channels
);
651 /* Extract components [start, start + channels) from a vector.
654 ac_extract_components(struct ac_llvm_context
*ctx
,
659 LLVMValueRef chan
[channels
];
661 for (unsigned i
= 0; i
< channels
; i
++)
662 chan
[i
] = ac_llvm_extract_elem(ctx
, value
, i
+ start
);
664 return ac_build_gather_values(ctx
, chan
, channels
);
667 /* Expand a scalar or vector to <4 x type> by filling the remaining channels
668 * with undef. Extract at most num_channels components from the input.
670 LLVMValueRef
ac_build_expand_to_vec4(struct ac_llvm_context
*ctx
,
672 unsigned num_channels
)
674 return ac_build_expand(ctx
, value
, num_channels
, 4);
677 LLVMValueRef
ac_build_round(struct ac_llvm_context
*ctx
, LLVMValueRef value
)
679 unsigned type_size
= ac_get_type_size(LLVMTypeOf(value
));
683 name
= "llvm.rint.f16";
684 else if (type_size
== 4)
685 name
= "llvm.rint.f32";
687 name
= "llvm.rint.f64";
689 return ac_build_intrinsic(ctx
, name
, LLVMTypeOf(value
), &value
, 1,
690 AC_FUNC_ATTR_READNONE
);
694 ac_build_fdiv(struct ac_llvm_context
*ctx
,
698 /* If we do (num / den), LLVM >= 7.0 does:
699 * return num * v_rcp_f32(den * (fabs(den) > 0x1.0p+96f ? 0x1.0p-32f : 1.0f));
701 * If we do (num * (1 / den)), LLVM does:
702 * return num * v_rcp_f32(den);
704 LLVMValueRef one
= LLVMConstReal(LLVMTypeOf(num
), 1.0);
705 LLVMValueRef rcp
= LLVMBuildFDiv(ctx
->builder
, one
, den
, "");
706 LLVMValueRef ret
= LLVMBuildFMul(ctx
->builder
, num
, rcp
, "");
708 /* Use v_rcp_f32 instead of precise division. */
709 if (!LLVMIsConstant(ret
))
710 LLVMSetMetadata(ret
, ctx
->fpmath_md_kind
, ctx
->fpmath_md_2p5_ulp
);
714 /* See fast_idiv_by_const.h. */
715 /* Set: increment = util_fast_udiv_info::increment ? multiplier : 0; */
716 LLVMValueRef
ac_build_fast_udiv(struct ac_llvm_context
*ctx
,
718 LLVMValueRef multiplier
,
719 LLVMValueRef pre_shift
,
720 LLVMValueRef post_shift
,
721 LLVMValueRef increment
)
723 LLVMBuilderRef builder
= ctx
->builder
;
725 num
= LLVMBuildLShr(builder
, num
, pre_shift
, "");
726 num
= LLVMBuildMul(builder
,
727 LLVMBuildZExt(builder
, num
, ctx
->i64
, ""),
728 LLVMBuildZExt(builder
, multiplier
, ctx
->i64
, ""), "");
729 num
= LLVMBuildAdd(builder
, num
,
730 LLVMBuildZExt(builder
, increment
, ctx
->i64
, ""), "");
731 num
= LLVMBuildLShr(builder
, num
, LLVMConstInt(ctx
->i64
, 32, 0), "");
732 num
= LLVMBuildTrunc(builder
, num
, ctx
->i32
, "");
733 return LLVMBuildLShr(builder
, num
, post_shift
, "");
736 /* See fast_idiv_by_const.h. */
737 /* If num != UINT_MAX, this more efficient version can be used. */
738 /* Set: increment = util_fast_udiv_info::increment; */
739 LLVMValueRef
ac_build_fast_udiv_nuw(struct ac_llvm_context
*ctx
,
741 LLVMValueRef multiplier
,
742 LLVMValueRef pre_shift
,
743 LLVMValueRef post_shift
,
744 LLVMValueRef increment
)
746 LLVMBuilderRef builder
= ctx
->builder
;
748 num
= LLVMBuildLShr(builder
, num
, pre_shift
, "");
749 num
= LLVMBuildNUWAdd(builder
, num
, increment
, "");
750 num
= LLVMBuildMul(builder
,
751 LLVMBuildZExt(builder
, num
, ctx
->i64
, ""),
752 LLVMBuildZExt(builder
, multiplier
, ctx
->i64
, ""), "");
753 num
= LLVMBuildLShr(builder
, num
, LLVMConstInt(ctx
->i64
, 32, 0), "");
754 num
= LLVMBuildTrunc(builder
, num
, ctx
->i32
, "");
755 return LLVMBuildLShr(builder
, num
, post_shift
, "");
758 /* See fast_idiv_by_const.h. */
759 /* Both operands must fit in 31 bits and the divisor must not be 1. */
760 LLVMValueRef
ac_build_fast_udiv_u31_d_not_one(struct ac_llvm_context
*ctx
,
762 LLVMValueRef multiplier
,
763 LLVMValueRef post_shift
)
765 LLVMBuilderRef builder
= ctx
->builder
;
767 num
= LLVMBuildMul(builder
,
768 LLVMBuildZExt(builder
, num
, ctx
->i64
, ""),
769 LLVMBuildZExt(builder
, multiplier
, ctx
->i64
, ""), "");
770 num
= LLVMBuildLShr(builder
, num
, LLVMConstInt(ctx
->i64
, 32, 0), "");
771 num
= LLVMBuildTrunc(builder
, num
, ctx
->i32
, "");
772 return LLVMBuildLShr(builder
, num
, post_shift
, "");
775 /* Coordinates for cube map selection. sc, tc, and ma are as in Table 8.27
776 * of the OpenGL 4.5 (Compatibility Profile) specification, except ma is
777 * already multiplied by two. id is the cube face number.
779 struct cube_selection_coords
{
786 build_cube_intrinsic(struct ac_llvm_context
*ctx
,
788 struct cube_selection_coords
*out
)
790 LLVMTypeRef f32
= ctx
->f32
;
792 out
->stc
[1] = ac_build_intrinsic(ctx
, "llvm.amdgcn.cubetc",
793 f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
794 out
->stc
[0] = ac_build_intrinsic(ctx
, "llvm.amdgcn.cubesc",
795 f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
796 out
->ma
= ac_build_intrinsic(ctx
, "llvm.amdgcn.cubema",
797 f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
798 out
->id
= ac_build_intrinsic(ctx
, "llvm.amdgcn.cubeid",
799 f32
, in
, 3, AC_FUNC_ATTR_READNONE
);
803 * Build a manual selection sequence for cube face sc/tc coordinates and
804 * major axis vector (multiplied by 2 for consistency) for the given
805 * vec3 \p coords, for the face implied by \p selcoords.
807 * For the major axis, we always adjust the sign to be in the direction of
808 * selcoords.ma; i.e., a positive out_ma means that coords is pointed towards
809 * the selcoords major axis.
811 static void build_cube_select(struct ac_llvm_context
*ctx
,
812 const struct cube_selection_coords
*selcoords
,
813 const LLVMValueRef
*coords
,
814 LLVMValueRef
*out_st
,
815 LLVMValueRef
*out_ma
)
817 LLVMBuilderRef builder
= ctx
->builder
;
818 LLVMTypeRef f32
= LLVMTypeOf(coords
[0]);
819 LLVMValueRef is_ma_positive
;
821 LLVMValueRef is_ma_z
, is_not_ma_z
;
822 LLVMValueRef is_ma_y
;
823 LLVMValueRef is_ma_x
;
827 is_ma_positive
= LLVMBuildFCmp(builder
, LLVMRealUGE
,
828 selcoords
->ma
, LLVMConstReal(f32
, 0.0), "");
829 sgn_ma
= LLVMBuildSelect(builder
, is_ma_positive
,
830 LLVMConstReal(f32
, 1.0), LLVMConstReal(f32
, -1.0), "");
832 is_ma_z
= LLVMBuildFCmp(builder
, LLVMRealUGE
, selcoords
->id
, LLVMConstReal(f32
, 4.0), "");
833 is_not_ma_z
= LLVMBuildNot(builder
, is_ma_z
, "");
834 is_ma_y
= LLVMBuildAnd(builder
, is_not_ma_z
,
835 LLVMBuildFCmp(builder
, LLVMRealUGE
, selcoords
->id
, LLVMConstReal(f32
, 2.0), ""), "");
836 is_ma_x
= LLVMBuildAnd(builder
, is_not_ma_z
, LLVMBuildNot(builder
, is_ma_y
, ""), "");
839 tmp
= LLVMBuildSelect(builder
, is_ma_x
, coords
[2], coords
[0], "");
840 sgn
= LLVMBuildSelect(builder
, is_ma_y
, LLVMConstReal(f32
, 1.0),
841 LLVMBuildSelect(builder
, is_ma_z
, sgn_ma
,
842 LLVMBuildFNeg(builder
, sgn_ma
, ""), ""), "");
843 out_st
[0] = LLVMBuildFMul(builder
, tmp
, sgn
, "");
846 tmp
= LLVMBuildSelect(builder
, is_ma_y
, coords
[2], coords
[1], "");
847 sgn
= LLVMBuildSelect(builder
, is_ma_y
, sgn_ma
,
848 LLVMConstReal(f32
, -1.0), "");
849 out_st
[1] = LLVMBuildFMul(builder
, tmp
, sgn
, "");
852 tmp
= LLVMBuildSelect(builder
, is_ma_z
, coords
[2],
853 LLVMBuildSelect(builder
, is_ma_y
, coords
[1], coords
[0], ""), "");
854 tmp
= ac_build_intrinsic(ctx
, "llvm.fabs.f32",
855 ctx
->f32
, &tmp
, 1, AC_FUNC_ATTR_READNONE
);
856 *out_ma
= LLVMBuildFMul(builder
, tmp
, LLVMConstReal(f32
, 2.0), "");
860 ac_prepare_cube_coords(struct ac_llvm_context
*ctx
,
861 bool is_deriv
, bool is_array
, bool is_lod
,
862 LLVMValueRef
*coords_arg
,
863 LLVMValueRef
*derivs_arg
)
866 LLVMBuilderRef builder
= ctx
->builder
;
867 struct cube_selection_coords selcoords
;
868 LLVMValueRef coords
[3];
871 if (is_array
&& !is_lod
) {
872 LLVMValueRef tmp
= ac_build_round(ctx
, coords_arg
[3]);
874 /* Section 8.9 (Texture Functions) of the GLSL 4.50 spec says:
876 * "For Array forms, the array layer used will be
878 * max(0, min(d−1, floor(layer+0.5)))
880 * where d is the depth of the texture array and layer
881 * comes from the component indicated in the tables below.
882 * Workaroudn for an issue where the layer is taken from a
883 * helper invocation which happens to fall on a different
884 * layer due to extrapolation."
886 * GFX8 and earlier attempt to implement this in hardware by
887 * clamping the value of coords[2] = (8 * layer) + face.
888 * Unfortunately, this means that the we end up with the wrong
889 * face when clamping occurs.
891 * Clamp the layer earlier to work around the issue.
893 if (ctx
->chip_class
<= GFX8
) {
895 ge0
= LLVMBuildFCmp(builder
, LLVMRealOGE
, tmp
, ctx
->f32_0
, "");
896 tmp
= LLVMBuildSelect(builder
, ge0
, tmp
, ctx
->f32_0
, "");
902 build_cube_intrinsic(ctx
, coords_arg
, &selcoords
);
904 invma
= ac_build_intrinsic(ctx
, "llvm.fabs.f32",
905 ctx
->f32
, &selcoords
.ma
, 1, AC_FUNC_ATTR_READNONE
);
906 invma
= ac_build_fdiv(ctx
, LLVMConstReal(ctx
->f32
, 1.0), invma
);
908 for (int i
= 0; i
< 2; ++i
)
909 coords
[i
] = LLVMBuildFMul(builder
, selcoords
.stc
[i
], invma
, "");
911 coords
[2] = selcoords
.id
;
913 if (is_deriv
&& derivs_arg
) {
914 LLVMValueRef derivs
[4];
917 /* Convert cube derivatives to 2D derivatives. */
918 for (axis
= 0; axis
< 2; axis
++) {
919 LLVMValueRef deriv_st
[2];
920 LLVMValueRef deriv_ma
;
922 /* Transform the derivative alongside the texture
923 * coordinate. Mathematically, the correct formula is
924 * as follows. Assume we're projecting onto the +Z face
925 * and denote by dx/dh the derivative of the (original)
926 * X texture coordinate with respect to horizontal
927 * window coordinates. The projection onto the +Z face
932 * Then df/dh = df/dx * dx/dh + df/dz * dz/dh
933 * = 1/z * dx/dh - x/z * 1/z * dz/dh.
935 * This motivatives the implementation below.
937 * Whether this actually gives the expected results for
938 * apps that might feed in derivatives obtained via
939 * finite differences is anyone's guess. The OpenGL spec
940 * seems awfully quiet about how textureGrad for cube
941 * maps should be handled.
943 build_cube_select(ctx
, &selcoords
, &derivs_arg
[axis
* 3],
944 deriv_st
, &deriv_ma
);
946 deriv_ma
= LLVMBuildFMul(builder
, deriv_ma
, invma
, "");
948 for (int i
= 0; i
< 2; ++i
)
949 derivs
[axis
* 2 + i
] =
950 LLVMBuildFSub(builder
,
951 LLVMBuildFMul(builder
, deriv_st
[i
], invma
, ""),
952 LLVMBuildFMul(builder
, deriv_ma
, coords
[i
], ""), "");
955 memcpy(derivs_arg
, derivs
, sizeof(derivs
));
958 /* Shift the texture coordinate. This must be applied after the
959 * derivative calculation.
961 for (int i
= 0; i
< 2; ++i
)
962 coords
[i
] = LLVMBuildFAdd(builder
, coords
[i
], LLVMConstReal(ctx
->f32
, 1.5), "");
965 /* for cube arrays coord.z = coord.w(array_index) * 8 + face */
966 /* coords_arg.w component - array_index for cube arrays */
967 coords
[2] = ac_build_fmad(ctx
, coords_arg
[3], LLVMConstReal(ctx
->f32
, 8.0), coords
[2]);
970 memcpy(coords_arg
, coords
, sizeof(coords
));
975 ac_build_fs_interp(struct ac_llvm_context
*ctx
,
976 LLVMValueRef llvm_chan
,
977 LLVMValueRef attr_number
,
982 LLVMValueRef args
[5];
987 args
[2] = attr_number
;
990 p1
= ac_build_intrinsic(ctx
, "llvm.amdgcn.interp.p1",
991 ctx
->f32
, args
, 4, AC_FUNC_ATTR_READNONE
);
996 args
[3] = attr_number
;
999 return ac_build_intrinsic(ctx
, "llvm.amdgcn.interp.p2",
1000 ctx
->f32
, args
, 5, AC_FUNC_ATTR_READNONE
);
1004 ac_build_fs_interp_f16(struct ac_llvm_context
*ctx
,
1005 LLVMValueRef llvm_chan
,
1006 LLVMValueRef attr_number
,
1007 LLVMValueRef params
,
1011 LLVMValueRef args
[6];
1015 args
[1] = llvm_chan
;
1016 args
[2] = attr_number
;
1017 args
[3] = ctx
->i1false
;
1020 p1
= ac_build_intrinsic(ctx
, "llvm.amdgcn.interp.p1.f16",
1021 ctx
->f32
, args
, 5, AC_FUNC_ATTR_READNONE
);
1025 args
[2] = llvm_chan
;
1026 args
[3] = attr_number
;
1027 args
[4] = ctx
->i1false
;
1030 return ac_build_intrinsic(ctx
, "llvm.amdgcn.interp.p2.f16",
1031 ctx
->f16
, args
, 6, AC_FUNC_ATTR_READNONE
);
1035 ac_build_fs_interp_mov(struct ac_llvm_context
*ctx
,
1036 LLVMValueRef parameter
,
1037 LLVMValueRef llvm_chan
,
1038 LLVMValueRef attr_number
,
1039 LLVMValueRef params
)
1041 LLVMValueRef args
[4];
1043 args
[0] = parameter
;
1044 args
[1] = llvm_chan
;
1045 args
[2] = attr_number
;
1048 return ac_build_intrinsic(ctx
, "llvm.amdgcn.interp.mov",
1049 ctx
->f32
, args
, 4, AC_FUNC_ATTR_READNONE
);
1053 ac_build_gep_ptr(struct ac_llvm_context
*ctx
,
1054 LLVMValueRef base_ptr
,
1057 return LLVMBuildGEP(ctx
->builder
, base_ptr
, &index
, 1, "");
1061 ac_build_gep0(struct ac_llvm_context
*ctx
,
1062 LLVMValueRef base_ptr
,
1065 LLVMValueRef indices
[2] = {
1069 return LLVMBuildGEP(ctx
->builder
, base_ptr
, indices
, 2, "");
1072 LLVMValueRef
ac_build_pointer_add(struct ac_llvm_context
*ctx
, LLVMValueRef ptr
,
1075 return LLVMBuildPointerCast(ctx
->builder
,
1076 LLVMBuildGEP(ctx
->builder
, ptr
, &index
, 1, ""),
1077 LLVMTypeOf(ptr
), "");
1081 ac_build_indexed_store(struct ac_llvm_context
*ctx
,
1082 LLVMValueRef base_ptr
, LLVMValueRef index
,
1085 LLVMBuildStore(ctx
->builder
, value
,
1086 ac_build_gep0(ctx
, base_ptr
, index
));
1090 * Build an LLVM bytecode indexed load using LLVMBuildGEP + LLVMBuildLoad.
1091 * It's equivalent to doing a load from &base_ptr[index].
1093 * \param base_ptr Where the array starts.
1094 * \param index The element index into the array.
1095 * \param uniform Whether the base_ptr and index can be assumed to be
1096 * dynamically uniform (i.e. load to an SGPR)
1097 * \param invariant Whether the load is invariant (no other opcodes affect it)
1098 * \param no_unsigned_wraparound
1099 * For all possible re-associations and re-distributions of an expression
1100 * "base_ptr + index * elemsize" into "addr + offset" (excluding GEPs
1101 * without inbounds in base_ptr), this parameter is true if "addr + offset"
1102 * does not result in an unsigned integer wraparound. This is used for
1103 * optimal code generation of 32-bit pointer arithmetic.
1105 * For example, a 32-bit immediate offset that causes a 32-bit unsigned
1106 * integer wraparound can't be an imm offset in s_load_dword, because
1107 * the instruction performs "addr + offset" in 64 bits.
1109 * Expected usage for bindless textures by chaining GEPs:
1110 * // possible unsigned wraparound, don't use InBounds:
1111 * ptr1 = LLVMBuildGEP(base_ptr, index);
1112 * image = load(ptr1); // becomes "s_load ptr1, 0"
1114 * ptr2 = LLVMBuildInBoundsGEP(ptr1, 32 / elemsize);
1115 * sampler = load(ptr2); // becomes "s_load ptr1, 32" thanks to InBounds
1118 ac_build_load_custom(struct ac_llvm_context
*ctx
, LLVMValueRef base_ptr
,
1119 LLVMValueRef index
, bool uniform
, bool invariant
,
1120 bool no_unsigned_wraparound
)
1122 LLVMValueRef pointer
, result
;
1124 if (no_unsigned_wraparound
&&
1125 LLVMGetPointerAddressSpace(LLVMTypeOf(base_ptr
)) == AC_ADDR_SPACE_CONST_32BIT
)
1126 pointer
= LLVMBuildInBoundsGEP(ctx
->builder
, base_ptr
, &index
, 1, "");
1128 pointer
= LLVMBuildGEP(ctx
->builder
, base_ptr
, &index
, 1, "");
1131 LLVMSetMetadata(pointer
, ctx
->uniform_md_kind
, ctx
->empty_md
);
1132 result
= LLVMBuildLoad(ctx
->builder
, pointer
, "");
1134 LLVMSetMetadata(result
, ctx
->invariant_load_md_kind
, ctx
->empty_md
);
1138 LLVMValueRef
ac_build_load(struct ac_llvm_context
*ctx
, LLVMValueRef base_ptr
,
1141 return ac_build_load_custom(ctx
, base_ptr
, index
, false, false, false);
1144 LLVMValueRef
ac_build_load_invariant(struct ac_llvm_context
*ctx
,
1145 LLVMValueRef base_ptr
, LLVMValueRef index
)
1147 return ac_build_load_custom(ctx
, base_ptr
, index
, false, true, false);
1150 /* This assumes that there is no unsigned integer wraparound during the address
1151 * computation, excluding all GEPs within base_ptr. */
1152 LLVMValueRef
ac_build_load_to_sgpr(struct ac_llvm_context
*ctx
,
1153 LLVMValueRef base_ptr
, LLVMValueRef index
)
1155 return ac_build_load_custom(ctx
, base_ptr
, index
, true, true, true);
1158 /* See ac_build_load_custom() documentation. */
1159 LLVMValueRef
ac_build_load_to_sgpr_uint_wraparound(struct ac_llvm_context
*ctx
,
1160 LLVMValueRef base_ptr
, LLVMValueRef index
)
1162 return ac_build_load_custom(ctx
, base_ptr
, index
, true, true, false);
1165 static unsigned get_load_cache_policy(struct ac_llvm_context
*ctx
,
1166 unsigned cache_policy
)
1168 return cache_policy
|
1169 (ctx
->chip_class
>= GFX10
&& cache_policy
& ac_glc
? ac_dlc
: 0);
1173 ac_build_buffer_store_common(struct ac_llvm_context
*ctx
,
1176 LLVMValueRef vindex
,
1177 LLVMValueRef voffset
,
1178 LLVMValueRef soffset
,
1179 unsigned num_channels
,
1180 LLVMTypeRef return_channel_type
,
1181 unsigned cache_policy
,
1185 LLVMValueRef args
[6];
1188 args
[idx
++] = LLVMBuildBitCast(ctx
->builder
, rsrc
, ctx
->v4i32
, "");
1190 args
[idx
++] = vindex
? vindex
: ctx
->i32_0
;
1191 args
[idx
++] = voffset
? voffset
: ctx
->i32_0
;
1192 args
[idx
++] = soffset
? soffset
: ctx
->i32_0
;
1193 args
[idx
++] = LLVMConstInt(ctx
->i32
, cache_policy
, 0);
1194 unsigned func
= !ac_has_vec3_support(ctx
->chip_class
, use_format
) && num_channels
== 3 ? 4 : num_channels
;
1195 const char *indexing_kind
= structurized
? "struct" : "raw";
1196 char name
[256], type_name
[8];
1198 LLVMTypeRef type
= func
> 1 ? LLVMVectorType(return_channel_type
, func
) : return_channel_type
;
1199 ac_build_type_name_for_intr(type
, type_name
, sizeof(type_name
));
1202 snprintf(name
, sizeof(name
), "llvm.amdgcn.%s.buffer.store.format.%s",
1203 indexing_kind
, type_name
);
1205 snprintf(name
, sizeof(name
), "llvm.amdgcn.%s.buffer.store.%s",
1206 indexing_kind
, type_name
);
1209 ac_build_intrinsic(ctx
, name
, ctx
->voidt
, args
, idx
,
1210 AC_FUNC_ATTR_INACCESSIBLE_MEM_ONLY
);
1214 ac_build_buffer_store_format(struct ac_llvm_context
*ctx
,
1217 LLVMValueRef vindex
,
1218 LLVMValueRef voffset
,
1219 unsigned num_channels
,
1220 unsigned cache_policy
)
1222 ac_build_buffer_store_common(ctx
, rsrc
, data
, vindex
,
1223 voffset
, NULL
, num_channels
,
1224 ctx
->f32
, cache_policy
,
1228 /* TBUFFER_STORE_FORMAT_{X,XY,XYZ,XYZW} <- the suffix is selected by num_channels=1..4.
1229 * The type of vdata must be one of i32 (num_channels=1), v2i32 (num_channels=2),
1230 * or v4i32 (num_channels=3,4).
1233 ac_build_buffer_store_dword(struct ac_llvm_context
*ctx
,
1236 unsigned num_channels
,
1237 LLVMValueRef voffset
,
1238 LLVMValueRef soffset
,
1239 unsigned inst_offset
,
1240 unsigned cache_policy
)
1242 /* Split 3 channel stores, because only LLVM 9+ support 3-channel
1244 if (num_channels
== 3 && !ac_has_vec3_support(ctx
->chip_class
, false)) {
1245 LLVMValueRef v
[3], v01
;
1247 for (int i
= 0; i
< 3; i
++) {
1248 v
[i
] = LLVMBuildExtractElement(ctx
->builder
, vdata
,
1249 LLVMConstInt(ctx
->i32
, i
, 0), "");
1251 v01
= ac_build_gather_values(ctx
, v
, 2);
1253 ac_build_buffer_store_dword(ctx
, rsrc
, v01
, 2, voffset
,
1254 soffset
, inst_offset
, cache_policy
);
1255 ac_build_buffer_store_dword(ctx
, rsrc
, v
[2], 1, voffset
,
1256 soffset
, inst_offset
+ 8,
1261 /* SWIZZLE_ENABLE requires that soffset isn't folded into voffset
1262 * (voffset is swizzled, but soffset isn't swizzled).
1263 * llvm.amdgcn.buffer.store doesn't have a separate soffset parameter.
1265 if (!(cache_policy
& ac_swizzled
)) {
1266 LLVMValueRef offset
= soffset
;
1269 offset
= LLVMBuildAdd(ctx
->builder
, offset
,
1270 LLVMConstInt(ctx
->i32
, inst_offset
, 0), "");
1272 ac_build_buffer_store_common(ctx
, rsrc
, ac_to_float(ctx
, vdata
),
1273 ctx
->i32_0
, voffset
, offset
,
1274 num_channels
, ctx
->f32
,
1275 cache_policy
, false, false);
1279 static const unsigned dfmts
[] = {
1280 V_008F0C_BUF_DATA_FORMAT_32
,
1281 V_008F0C_BUF_DATA_FORMAT_32_32
,
1282 V_008F0C_BUF_DATA_FORMAT_32_32_32
,
1283 V_008F0C_BUF_DATA_FORMAT_32_32_32_32
1285 unsigned dfmt
= dfmts
[num_channels
- 1];
1286 unsigned nfmt
= V_008F0C_BUF_NUM_FORMAT_UINT
;
1287 LLVMValueRef immoffset
= LLVMConstInt(ctx
->i32
, inst_offset
, 0);
1289 ac_build_raw_tbuffer_store(ctx
, rsrc
, vdata
, voffset
, soffset
,
1290 immoffset
, num_channels
, dfmt
, nfmt
, cache_policy
);
1294 ac_build_buffer_load_common(struct ac_llvm_context
*ctx
,
1296 LLVMValueRef vindex
,
1297 LLVMValueRef voffset
,
1298 LLVMValueRef soffset
,
1299 unsigned num_channels
,
1300 LLVMTypeRef channel_type
,
1301 unsigned cache_policy
,
1306 LLVMValueRef args
[5];
1308 args
[idx
++] = LLVMBuildBitCast(ctx
->builder
, rsrc
, ctx
->v4i32
, "");
1310 args
[idx
++] = vindex
? vindex
: ctx
->i32_0
;
1311 args
[idx
++] = voffset
? voffset
: ctx
->i32_0
;
1312 args
[idx
++] = soffset
? soffset
: ctx
->i32_0
;
1313 args
[idx
++] = LLVMConstInt(ctx
->i32
, get_load_cache_policy(ctx
, cache_policy
), 0);
1314 unsigned func
= !ac_has_vec3_support(ctx
->chip_class
, use_format
) && num_channels
== 3 ? 4 : num_channels
;
1315 const char *indexing_kind
= structurized
? "struct" : "raw";
1316 char name
[256], type_name
[8];
1318 LLVMTypeRef type
= func
> 1 ? LLVMVectorType(channel_type
, func
) : channel_type
;
1319 ac_build_type_name_for_intr(type
, type_name
, sizeof(type_name
));
1322 snprintf(name
, sizeof(name
), "llvm.amdgcn.%s.buffer.load.format.%s",
1323 indexing_kind
, type_name
);
1325 snprintf(name
, sizeof(name
), "llvm.amdgcn.%s.buffer.load.%s",
1326 indexing_kind
, type_name
);
1329 return ac_build_intrinsic(ctx
, name
, type
, args
, idx
,
1330 ac_get_load_intr_attribs(can_speculate
));
1334 ac_build_buffer_load(struct ac_llvm_context
*ctx
,
1337 LLVMValueRef vindex
,
1338 LLVMValueRef voffset
,
1339 LLVMValueRef soffset
,
1340 unsigned inst_offset
,
1341 unsigned cache_policy
,
1345 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, inst_offset
, 0);
1347 offset
= LLVMBuildAdd(ctx
->builder
, offset
, voffset
, "");
1349 offset
= LLVMBuildAdd(ctx
->builder
, offset
, soffset
, "");
1351 if (allow_smem
&& !(cache_policy
& ac_slc
) &&
1352 (!(cache_policy
& ac_glc
) || ctx
->chip_class
>= GFX8
)) {
1353 assert(vindex
== NULL
);
1355 LLVMValueRef result
[8];
1357 for (int i
= 0; i
< num_channels
; i
++) {
1359 offset
= LLVMBuildAdd(ctx
->builder
, offset
,
1360 LLVMConstInt(ctx
->i32
, 4, 0), "");
1362 LLVMValueRef args
[3] = {
1365 LLVMConstInt(ctx
->i32
, get_load_cache_policy(ctx
, cache_policy
), 0),
1367 result
[i
] = ac_build_intrinsic(ctx
,
1368 "llvm.amdgcn.s.buffer.load.f32",
1370 AC_FUNC_ATTR_READNONE
);
1372 if (num_channels
== 1)
1375 if (num_channels
== 3 && !ac_has_vec3_support(ctx
->chip_class
, false))
1376 result
[num_channels
++] = LLVMGetUndef(ctx
->f32
);
1377 return ac_build_gather_values(ctx
, result
, num_channels
);
1380 return ac_build_buffer_load_common(ctx
, rsrc
, vindex
,
1382 num_channels
, ctx
->f32
,
1384 can_speculate
, false, false);
1387 LLVMValueRef
ac_build_buffer_load_format(struct ac_llvm_context
*ctx
,
1389 LLVMValueRef vindex
,
1390 LLVMValueRef voffset
,
1391 unsigned num_channels
,
1392 unsigned cache_policy
,
1395 return ac_build_buffer_load_common(ctx
, rsrc
, vindex
, voffset
,
1396 ctx
->i32_0
, num_channels
, ctx
->f32
,
1397 cache_policy
, can_speculate
,
1402 ac_build_tbuffer_load(struct ac_llvm_context
*ctx
,
1404 LLVMValueRef vindex
,
1405 LLVMValueRef voffset
,
1406 LLVMValueRef soffset
,
1407 LLVMValueRef immoffset
,
1408 unsigned num_channels
,
1411 unsigned cache_policy
,
1415 voffset
= LLVMBuildAdd(ctx
->builder
, voffset
, immoffset
, "");
1417 LLVMValueRef args
[6];
1419 args
[idx
++] = LLVMBuildBitCast(ctx
->builder
, rsrc
, ctx
->v4i32
, "");
1421 args
[idx
++] = vindex
? vindex
: ctx
->i32_0
;
1422 args
[idx
++] = voffset
? voffset
: ctx
->i32_0
;
1423 args
[idx
++] = soffset
? soffset
: ctx
->i32_0
;
1424 args
[idx
++] = LLVMConstInt(ctx
->i32
, ac_get_tbuffer_format(ctx
->chip_class
, dfmt
, nfmt
), 0);
1425 args
[idx
++] = LLVMConstInt(ctx
->i32
, get_load_cache_policy(ctx
, cache_policy
), 0);
1426 unsigned func
= !ac_has_vec3_support(ctx
->chip_class
, true) && num_channels
== 3 ? 4 : num_channels
;
1427 const char *indexing_kind
= structurized
? "struct" : "raw";
1428 char name
[256], type_name
[8];
1430 LLVMTypeRef type
= func
> 1 ? LLVMVectorType(ctx
->i32
, func
) : ctx
->i32
;
1431 ac_build_type_name_for_intr(type
, type_name
, sizeof(type_name
));
1433 snprintf(name
, sizeof(name
), "llvm.amdgcn.%s.tbuffer.load.%s",
1434 indexing_kind
, type_name
);
1436 return ac_build_intrinsic(ctx
, name
, type
, args
, idx
,
1437 ac_get_load_intr_attribs(can_speculate
));
1441 ac_build_struct_tbuffer_load(struct ac_llvm_context
*ctx
,
1443 LLVMValueRef vindex
,
1444 LLVMValueRef voffset
,
1445 LLVMValueRef soffset
,
1446 LLVMValueRef immoffset
,
1447 unsigned num_channels
,
1450 unsigned cache_policy
,
1453 return ac_build_tbuffer_load(ctx
, rsrc
, vindex
, voffset
, soffset
,
1454 immoffset
, num_channels
, dfmt
, nfmt
,
1455 cache_policy
, can_speculate
, true);
1459 ac_build_raw_tbuffer_load(struct ac_llvm_context
*ctx
,
1461 LLVMValueRef voffset
,
1462 LLVMValueRef soffset
,
1463 LLVMValueRef immoffset
,
1464 unsigned num_channels
,
1467 unsigned cache_policy
,
1470 return ac_build_tbuffer_load(ctx
, rsrc
, NULL
, voffset
, soffset
,
1471 immoffset
, num_channels
, dfmt
, nfmt
,
1472 cache_policy
, can_speculate
, false);
1476 ac_build_tbuffer_load_short(struct ac_llvm_context
*ctx
,
1478 LLVMValueRef voffset
,
1479 LLVMValueRef soffset
,
1480 LLVMValueRef immoffset
,
1481 unsigned cache_policy
)
1485 if (LLVM_VERSION_MAJOR
>= 9) {
1486 voffset
= LLVMBuildAdd(ctx
->builder
, voffset
, immoffset
, "");
1488 /* LLVM 9+ supports i8/i16 with struct/raw intrinsics. */
1489 res
= ac_build_buffer_load_common(ctx
, rsrc
, NULL
,
1491 1, ctx
->i16
, cache_policy
,
1492 false, false, false);
1494 unsigned dfmt
= V_008F0C_BUF_DATA_FORMAT_16
;
1495 unsigned nfmt
= V_008F0C_BUF_NUM_FORMAT_UINT
;
1497 res
= ac_build_raw_tbuffer_load(ctx
, rsrc
, voffset
, soffset
,
1498 immoffset
, 1, dfmt
, nfmt
, cache_policy
,
1501 res
= LLVMBuildTrunc(ctx
->builder
, res
, ctx
->i16
, "");
1508 ac_build_tbuffer_load_byte(struct ac_llvm_context
*ctx
,
1510 LLVMValueRef voffset
,
1511 LLVMValueRef soffset
,
1512 LLVMValueRef immoffset
,
1513 unsigned cache_policy
)
1517 if (LLVM_VERSION_MAJOR
>= 9) {
1518 voffset
= LLVMBuildAdd(ctx
->builder
, voffset
, immoffset
, "");
1520 /* LLVM 9+ supports i8/i16 with struct/raw intrinsics. */
1521 res
= ac_build_buffer_load_common(ctx
, rsrc
, NULL
,
1523 1, ctx
->i8
, cache_policy
,
1524 false, false, false);
1526 unsigned dfmt
= V_008F0C_BUF_DATA_FORMAT_8
;
1527 unsigned nfmt
= V_008F0C_BUF_NUM_FORMAT_UINT
;
1529 res
= ac_build_raw_tbuffer_load(ctx
, rsrc
, voffset
, soffset
,
1530 immoffset
, 1, dfmt
, nfmt
, cache_policy
,
1533 res
= LLVMBuildTrunc(ctx
->builder
, res
, ctx
->i8
, "");
1540 * Convert an 11- or 10-bit unsigned floating point number to an f32.
1542 * The input exponent is expected to be biased analogous to IEEE-754, i.e. by
1543 * 2^(exp_bits-1) - 1 (as defined in OpenGL and other graphics APIs).
1546 ac_ufN_to_float(struct ac_llvm_context
*ctx
, LLVMValueRef src
, unsigned exp_bits
, unsigned mant_bits
)
1548 assert(LLVMTypeOf(src
) == ctx
->i32
);
1551 LLVMValueRef mantissa
;
1552 mantissa
= LLVMBuildAnd(ctx
->builder
, src
, LLVMConstInt(ctx
->i32
, (1 << mant_bits
) - 1, false), "");
1554 /* Converting normal numbers is just a shift + correcting the exponent bias */
1555 unsigned normal_shift
= 23 - mant_bits
;
1556 unsigned bias_shift
= 127 - ((1 << (exp_bits
- 1)) - 1);
1557 LLVMValueRef shifted
, normal
;
1559 shifted
= LLVMBuildShl(ctx
->builder
, src
, LLVMConstInt(ctx
->i32
, normal_shift
, false), "");
1560 normal
= LLVMBuildAdd(ctx
->builder
, shifted
, LLVMConstInt(ctx
->i32
, bias_shift
<< 23, false), "");
1562 /* Converting nan/inf numbers is the same, but with a different exponent update */
1563 LLVMValueRef naninf
;
1564 naninf
= LLVMBuildOr(ctx
->builder
, normal
, LLVMConstInt(ctx
->i32
, 0xff << 23, false), "");
1566 /* Converting denormals is the complex case: determine the leading zeros of the
1567 * mantissa to obtain the correct shift for the mantissa and exponent correction.
1569 LLVMValueRef denormal
;
1570 LLVMValueRef params
[2] = {
1572 ctx
->i1true
, /* result can be undef when arg is 0 */
1574 LLVMValueRef ctlz
= ac_build_intrinsic(ctx
, "llvm.ctlz.i32", ctx
->i32
,
1575 params
, 2, AC_FUNC_ATTR_READNONE
);
1577 /* Shift such that the leading 1 ends up as the LSB of the exponent field. */
1578 tmp
= LLVMBuildSub(ctx
->builder
, ctlz
, LLVMConstInt(ctx
->i32
, 8, false), "");
1579 denormal
= LLVMBuildShl(ctx
->builder
, mantissa
, tmp
, "");
1581 unsigned denormal_exp
= bias_shift
+ (32 - mant_bits
) - 1;
1582 tmp
= LLVMBuildSub(ctx
->builder
, LLVMConstInt(ctx
->i32
, denormal_exp
, false), ctlz
, "");
1583 tmp
= LLVMBuildShl(ctx
->builder
, tmp
, LLVMConstInt(ctx
->i32
, 23, false), "");
1584 denormal
= LLVMBuildAdd(ctx
->builder
, denormal
, tmp
, "");
1586 /* Select the final result. */
1587 LLVMValueRef result
;
1589 tmp
= LLVMBuildICmp(ctx
->builder
, LLVMIntUGE
, src
,
1590 LLVMConstInt(ctx
->i32
, ((1 << exp_bits
) - 1) << mant_bits
, false), "");
1591 result
= LLVMBuildSelect(ctx
->builder
, tmp
, naninf
, normal
, "");
1593 tmp
= LLVMBuildICmp(ctx
->builder
, LLVMIntUGE
, src
,
1594 LLVMConstInt(ctx
->i32
, 1 << mant_bits
, false), "");
1595 result
= LLVMBuildSelect(ctx
->builder
, tmp
, result
, denormal
, "");
1597 tmp
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
, src
, ctx
->i32_0
, "");
1598 result
= LLVMBuildSelect(ctx
->builder
, tmp
, result
, ctx
->i32_0
, "");
1600 return ac_to_float(ctx
, result
);
1604 * Generate a fully general open coded buffer format fetch with all required
1605 * fixups suitable for vertex fetch, using non-format buffer loads.
1607 * Some combinations of argument values have special interpretations:
1608 * - size = 8 bytes, format = fixed indicates PIPE_FORMAT_R11G11B10_FLOAT
1609 * - size = 8 bytes, format != {float,fixed} indicates a 2_10_10_10 data format
1611 * \param log_size log(size of channel in bytes)
1612 * \param num_channels number of channels (1 to 4)
1613 * \param format AC_FETCH_FORMAT_xxx value
1614 * \param reverse whether XYZ channels are reversed
1615 * \param known_aligned whether the source is known to be aligned to hardware's
1616 * effective element size for loading the given format
1617 * (note: this means dword alignment for 8_8_8_8, 16_16, etc.)
1618 * \param rsrc buffer resource descriptor
1619 * \return the resulting vector of floats or integers bitcast to <4 x i32>
1622 ac_build_opencoded_load_format(struct ac_llvm_context
*ctx
,
1624 unsigned num_channels
,
1629 LLVMValueRef vindex
,
1630 LLVMValueRef voffset
,
1631 LLVMValueRef soffset
,
1632 unsigned cache_policy
,
1636 unsigned load_log_size
= log_size
;
1637 unsigned load_num_channels
= num_channels
;
1638 if (log_size
== 3) {
1640 if (format
== AC_FETCH_FORMAT_FLOAT
) {
1641 load_num_channels
= 2 * num_channels
;
1643 load_num_channels
= 1; /* 10_11_11 or 2_10_10_10 */
1647 int log_recombine
= 0;
1648 if (ctx
->chip_class
== GFX6
&& !known_aligned
) {
1649 /* Avoid alignment restrictions by loading one byte at a time. */
1650 load_num_channels
<<= load_log_size
;
1651 log_recombine
= load_log_size
;
1653 } else if (load_num_channels
== 2 || load_num_channels
== 4) {
1654 log_recombine
= -util_logbase2(load_num_channels
);
1655 load_num_channels
= 1;
1656 load_log_size
+= -log_recombine
;
1659 assert(load_log_size
>= 2 || LLVM_VERSION_MAJOR
>= 9);
1661 LLVMValueRef loads
[32]; /* up to 32 bytes */
1662 for (unsigned i
= 0; i
< load_num_channels
; ++i
) {
1663 tmp
= LLVMBuildAdd(ctx
->builder
, soffset
,
1664 LLVMConstInt(ctx
->i32
, i
<< load_log_size
, false), "");
1665 LLVMTypeRef channel_type
= load_log_size
== 0 ? ctx
->i8
:
1666 load_log_size
== 1 ? ctx
->i16
: ctx
->i32
;
1667 unsigned num_channels
= 1 << (MAX2(load_log_size
, 2) - 2);
1668 loads
[i
] = ac_build_buffer_load_common(
1669 ctx
, rsrc
, vindex
, voffset
, tmp
,
1670 num_channels
, channel_type
, cache_policy
,
1671 can_speculate
, false, true);
1672 if (load_log_size
>= 2)
1673 loads
[i
] = ac_to_integer(ctx
, loads
[i
]);
1676 if (log_recombine
> 0) {
1677 /* Recombine bytes if necessary (GFX6 only) */
1678 LLVMTypeRef dst_type
= log_recombine
== 2 ? ctx
->i32
: ctx
->i16
;
1680 for (unsigned src
= 0, dst
= 0; src
< load_num_channels
; ++dst
) {
1681 LLVMValueRef accum
= NULL
;
1682 for (unsigned i
= 0; i
< (1 << log_recombine
); ++i
, ++src
) {
1683 tmp
= LLVMBuildZExt(ctx
->builder
, loads
[src
], dst_type
, "");
1687 tmp
= LLVMBuildShl(ctx
->builder
, tmp
,
1688 LLVMConstInt(dst_type
, 8 * i
, false), "");
1689 accum
= LLVMBuildOr(ctx
->builder
, accum
, tmp
, "");
1694 } else if (log_recombine
< 0) {
1695 /* Split vectors of dwords */
1696 if (load_log_size
> 2) {
1697 assert(load_num_channels
== 1);
1698 LLVMValueRef loaded
= loads
[0];
1699 unsigned log_split
= load_log_size
- 2;
1700 log_recombine
+= log_split
;
1701 load_num_channels
= 1 << log_split
;
1703 for (unsigned i
= 0; i
< load_num_channels
; ++i
) {
1704 tmp
= LLVMConstInt(ctx
->i32
, i
, false);
1705 loads
[i
] = LLVMBuildExtractElement(ctx
->builder
, loaded
, tmp
, "");
1709 /* Further split dwords and shorts if required */
1710 if (log_recombine
< 0) {
1711 for (unsigned src
= load_num_channels
,
1712 dst
= load_num_channels
<< -log_recombine
;
1714 unsigned dst_bits
= 1 << (3 + load_log_size
+ log_recombine
);
1715 LLVMTypeRef dst_type
= LLVMIntTypeInContext(ctx
->context
, dst_bits
);
1716 LLVMValueRef loaded
= loads
[src
- 1];
1717 LLVMTypeRef loaded_type
= LLVMTypeOf(loaded
);
1718 for (unsigned i
= 1 << -log_recombine
; i
> 0; --i
, --dst
) {
1719 tmp
= LLVMConstInt(loaded_type
, dst_bits
* (i
- 1), false);
1720 tmp
= LLVMBuildLShr(ctx
->builder
, loaded
, tmp
, "");
1721 loads
[dst
- 1] = LLVMBuildTrunc(ctx
->builder
, tmp
, dst_type
, "");
1727 if (log_size
== 3) {
1728 if (format
== AC_FETCH_FORMAT_FLOAT
) {
1729 for (unsigned i
= 0; i
< num_channels
; ++i
) {
1730 tmp
= ac_build_gather_values(ctx
, &loads
[2 * i
], 2);
1731 loads
[i
] = LLVMBuildBitCast(ctx
->builder
, tmp
, ctx
->f64
, "");
1733 } else if (format
== AC_FETCH_FORMAT_FIXED
) {
1734 /* 10_11_11_FLOAT */
1735 LLVMValueRef data
= loads
[0];
1736 LLVMValueRef i32_2047
= LLVMConstInt(ctx
->i32
, 2047, false);
1737 LLVMValueRef r
= LLVMBuildAnd(ctx
->builder
, data
, i32_2047
, "");
1738 tmp
= LLVMBuildLShr(ctx
->builder
, data
, LLVMConstInt(ctx
->i32
, 11, false), "");
1739 LLVMValueRef g
= LLVMBuildAnd(ctx
->builder
, tmp
, i32_2047
, "");
1740 LLVMValueRef b
= LLVMBuildLShr(ctx
->builder
, data
, LLVMConstInt(ctx
->i32
, 22, false), "");
1742 loads
[0] = ac_to_integer(ctx
, ac_ufN_to_float(ctx
, r
, 5, 6));
1743 loads
[1] = ac_to_integer(ctx
, ac_ufN_to_float(ctx
, g
, 5, 6));
1744 loads
[2] = ac_to_integer(ctx
, ac_ufN_to_float(ctx
, b
, 5, 5));
1748 format
= AC_FETCH_FORMAT_FLOAT
;
1750 /* 2_10_10_10 data formats */
1751 LLVMValueRef data
= loads
[0];
1752 LLVMTypeRef i10
= LLVMIntTypeInContext(ctx
->context
, 10);
1753 LLVMTypeRef i2
= LLVMIntTypeInContext(ctx
->context
, 2);
1754 loads
[0] = LLVMBuildTrunc(ctx
->builder
, data
, i10
, "");
1755 tmp
= LLVMBuildLShr(ctx
->builder
, data
, LLVMConstInt(ctx
->i32
, 10, false), "");
1756 loads
[1] = LLVMBuildTrunc(ctx
->builder
, tmp
, i10
, "");
1757 tmp
= LLVMBuildLShr(ctx
->builder
, data
, LLVMConstInt(ctx
->i32
, 20, false), "");
1758 loads
[2] = LLVMBuildTrunc(ctx
->builder
, tmp
, i10
, "");
1759 tmp
= LLVMBuildLShr(ctx
->builder
, data
, LLVMConstInt(ctx
->i32
, 30, false), "");
1760 loads
[3] = LLVMBuildTrunc(ctx
->builder
, tmp
, i2
, "");
1766 if (format
== AC_FETCH_FORMAT_FLOAT
) {
1767 if (log_size
!= 2) {
1768 for (unsigned chan
= 0; chan
< num_channels
; ++chan
) {
1769 tmp
= ac_to_float(ctx
, loads
[chan
]);
1771 tmp
= LLVMBuildFPTrunc(ctx
->builder
, tmp
, ctx
->f32
, "");
1772 else if (log_size
== 1)
1773 tmp
= LLVMBuildFPExt(ctx
->builder
, tmp
, ctx
->f32
, "");
1774 loads
[chan
] = ac_to_integer(ctx
, tmp
);
1777 } else if (format
== AC_FETCH_FORMAT_UINT
) {
1778 if (log_size
!= 2) {
1779 for (unsigned chan
= 0; chan
< num_channels
; ++chan
)
1780 loads
[chan
] = LLVMBuildZExt(ctx
->builder
, loads
[chan
], ctx
->i32
, "");
1782 } else if (format
== AC_FETCH_FORMAT_SINT
) {
1783 if (log_size
!= 2) {
1784 for (unsigned chan
= 0; chan
< num_channels
; ++chan
)
1785 loads
[chan
] = LLVMBuildSExt(ctx
->builder
, loads
[chan
], ctx
->i32
, "");
1788 bool unsign
= format
== AC_FETCH_FORMAT_UNORM
||
1789 format
== AC_FETCH_FORMAT_USCALED
||
1790 format
== AC_FETCH_FORMAT_UINT
;
1792 for (unsigned chan
= 0; chan
< num_channels
; ++chan
) {
1794 tmp
= LLVMBuildUIToFP(ctx
->builder
, loads
[chan
], ctx
->f32
, "");
1796 tmp
= LLVMBuildSIToFP(ctx
->builder
, loads
[chan
], ctx
->f32
, "");
1799 LLVMValueRef scale
= NULL
;
1800 if (format
== AC_FETCH_FORMAT_FIXED
) {
1801 assert(log_size
== 2);
1802 scale
= LLVMConstReal(ctx
->f32
, 1.0 / 0x10000);
1803 } else if (format
== AC_FETCH_FORMAT_UNORM
) {
1804 unsigned bits
= LLVMGetIntTypeWidth(LLVMTypeOf(loads
[chan
]));
1805 scale
= LLVMConstReal(ctx
->f32
, 1.0 / (((uint64_t)1 << bits
) - 1));
1806 } else if (format
== AC_FETCH_FORMAT_SNORM
) {
1807 unsigned bits
= LLVMGetIntTypeWidth(LLVMTypeOf(loads
[chan
]));
1808 scale
= LLVMConstReal(ctx
->f32
, 1.0 / (((uint64_t)1 << (bits
- 1)) - 1));
1811 tmp
= LLVMBuildFMul(ctx
->builder
, tmp
, scale
, "");
1813 if (format
== AC_FETCH_FORMAT_SNORM
) {
1814 /* Clamp to [-1, 1] */
1815 LLVMValueRef neg_one
= LLVMConstReal(ctx
->f32
, -1.0);
1816 LLVMValueRef clamp
=
1817 LLVMBuildFCmp(ctx
->builder
, LLVMRealULT
, tmp
, neg_one
, "");
1818 tmp
= LLVMBuildSelect(ctx
->builder
, clamp
, neg_one
, tmp
, "");
1821 loads
[chan
] = ac_to_integer(ctx
, tmp
);
1825 while (num_channels
< 4) {
1826 if (format
== AC_FETCH_FORMAT_UINT
|| format
== AC_FETCH_FORMAT_SINT
) {
1827 loads
[num_channels
] = num_channels
== 3 ? ctx
->i32_1
: ctx
->i32_0
;
1829 loads
[num_channels
] = ac_to_integer(ctx
, num_channels
== 3 ? ctx
->f32_1
: ctx
->f32_0
);
1836 loads
[0] = loads
[2];
1840 return ac_build_gather_values(ctx
, loads
, 4);
1844 ac_build_tbuffer_store(struct ac_llvm_context
*ctx
,
1847 LLVMValueRef vindex
,
1848 LLVMValueRef voffset
,
1849 LLVMValueRef soffset
,
1850 LLVMValueRef immoffset
,
1851 unsigned num_channels
,
1854 unsigned cache_policy
,
1857 voffset
= LLVMBuildAdd(ctx
->builder
, voffset
? voffset
: ctx
->i32_0
,
1860 LLVMValueRef args
[7];
1862 args
[idx
++] = vdata
;
1863 args
[idx
++] = LLVMBuildBitCast(ctx
->builder
, rsrc
, ctx
->v4i32
, "");
1865 args
[idx
++] = vindex
? vindex
: ctx
->i32_0
;
1866 args
[idx
++] = voffset
? voffset
: ctx
->i32_0
;
1867 args
[idx
++] = soffset
? soffset
: ctx
->i32_0
;
1868 args
[idx
++] = LLVMConstInt(ctx
->i32
, ac_get_tbuffer_format(ctx
->chip_class
, dfmt
, nfmt
), 0);
1869 args
[idx
++] = LLVMConstInt(ctx
->i32
, cache_policy
, 0);
1870 unsigned func
= !ac_has_vec3_support(ctx
->chip_class
, true) && num_channels
== 3 ? 4 : num_channels
;
1871 const char *indexing_kind
= structurized
? "struct" : "raw";
1872 char name
[256], type_name
[8];
1874 LLVMTypeRef type
= func
> 1 ? LLVMVectorType(ctx
->i32
, func
) : ctx
->i32
;
1875 ac_build_type_name_for_intr(type
, type_name
, sizeof(type_name
));
1877 snprintf(name
, sizeof(name
), "llvm.amdgcn.%s.tbuffer.store.%s",
1878 indexing_kind
, type_name
);
1880 ac_build_intrinsic(ctx
, name
, ctx
->voidt
, args
, idx
,
1881 AC_FUNC_ATTR_INACCESSIBLE_MEM_ONLY
);
1885 ac_build_struct_tbuffer_store(struct ac_llvm_context
*ctx
,
1888 LLVMValueRef vindex
,
1889 LLVMValueRef voffset
,
1890 LLVMValueRef soffset
,
1891 LLVMValueRef immoffset
,
1892 unsigned num_channels
,
1895 unsigned cache_policy
)
1897 ac_build_tbuffer_store(ctx
, rsrc
, vdata
, vindex
, voffset
, soffset
,
1898 immoffset
, num_channels
, dfmt
, nfmt
, cache_policy
,
1903 ac_build_raw_tbuffer_store(struct ac_llvm_context
*ctx
,
1906 LLVMValueRef voffset
,
1907 LLVMValueRef soffset
,
1908 LLVMValueRef immoffset
,
1909 unsigned num_channels
,
1912 unsigned cache_policy
)
1914 ac_build_tbuffer_store(ctx
, rsrc
, vdata
, NULL
, voffset
, soffset
,
1915 immoffset
, num_channels
, dfmt
, nfmt
, cache_policy
,
1920 ac_build_tbuffer_store_short(struct ac_llvm_context
*ctx
,
1923 LLVMValueRef voffset
,
1924 LLVMValueRef soffset
,
1925 unsigned cache_policy
)
1927 vdata
= LLVMBuildBitCast(ctx
->builder
, vdata
, ctx
->i16
, "");
1929 if (LLVM_VERSION_MAJOR
>= 9) {
1930 /* LLVM 9+ supports i8/i16 with struct/raw intrinsics. */
1931 ac_build_buffer_store_common(ctx
, rsrc
, vdata
, NULL
,
1932 voffset
, soffset
, 1,
1933 ctx
->i16
, cache_policy
,
1936 unsigned dfmt
= V_008F0C_BUF_DATA_FORMAT_16
;
1937 unsigned nfmt
= V_008F0C_BUF_NUM_FORMAT_UINT
;
1939 vdata
= LLVMBuildZExt(ctx
->builder
, vdata
, ctx
->i32
, "");
1941 ac_build_raw_tbuffer_store(ctx
, rsrc
, vdata
, voffset
, soffset
,
1942 ctx
->i32_0
, 1, dfmt
, nfmt
, cache_policy
);
1947 ac_build_tbuffer_store_byte(struct ac_llvm_context
*ctx
,
1950 LLVMValueRef voffset
,
1951 LLVMValueRef soffset
,
1952 unsigned cache_policy
)
1954 vdata
= LLVMBuildBitCast(ctx
->builder
, vdata
, ctx
->i8
, "");
1956 if (LLVM_VERSION_MAJOR
>= 9) {
1957 /* LLVM 9+ supports i8/i16 with struct/raw intrinsics. */
1958 ac_build_buffer_store_common(ctx
, rsrc
, vdata
, NULL
,
1959 voffset
, soffset
, 1,
1960 ctx
->i8
, cache_policy
,
1963 unsigned dfmt
= V_008F0C_BUF_DATA_FORMAT_8
;
1964 unsigned nfmt
= V_008F0C_BUF_NUM_FORMAT_UINT
;
1966 vdata
= LLVMBuildZExt(ctx
->builder
, vdata
, ctx
->i32
, "");
1968 ac_build_raw_tbuffer_store(ctx
, rsrc
, vdata
, voffset
, soffset
,
1969 ctx
->i32_0
, 1, dfmt
, nfmt
, cache_policy
);
1973 * Set range metadata on an instruction. This can only be used on load and
1974 * call instructions. If you know an instruction can only produce the values
1975 * 0, 1, 2, you would do set_range_metadata(value, 0, 3);
1976 * \p lo is the minimum value inclusive.
1977 * \p hi is the maximum value exclusive.
1979 static void set_range_metadata(struct ac_llvm_context
*ctx
,
1980 LLVMValueRef value
, unsigned lo
, unsigned hi
)
1982 LLVMValueRef range_md
, md_args
[2];
1983 LLVMTypeRef type
= LLVMTypeOf(value
);
1984 LLVMContextRef context
= LLVMGetTypeContext(type
);
1986 md_args
[0] = LLVMConstInt(type
, lo
, false);
1987 md_args
[1] = LLVMConstInt(type
, hi
, false);
1988 range_md
= LLVMMDNodeInContext(context
, md_args
, 2);
1989 LLVMSetMetadata(value
, ctx
->range_md_kind
, range_md
);
1993 ac_get_thread_id(struct ac_llvm_context
*ctx
)
1997 LLVMValueRef tid_args
[2];
1998 tid_args
[0] = LLVMConstInt(ctx
->i32
, 0xffffffff, false);
1999 tid_args
[1] = ctx
->i32_0
;
2000 tid_args
[1] = ac_build_intrinsic(ctx
,
2001 "llvm.amdgcn.mbcnt.lo", ctx
->i32
,
2002 tid_args
, 2, AC_FUNC_ATTR_READNONE
);
2004 if (ctx
->wave_size
== 32) {
2007 tid
= ac_build_intrinsic(ctx
, "llvm.amdgcn.mbcnt.hi",
2009 2, AC_FUNC_ATTR_READNONE
);
2011 set_range_metadata(ctx
, tid
, 0, ctx
->wave_size
);
2016 * AMD GCN implements derivatives using the local data store (LDS)
2017 * All writes to the LDS happen in all executing threads at
2018 * the same time. TID is the Thread ID for the current
2019 * thread and is a value between 0 and 63, representing
2020 * the thread's position in the wavefront.
2022 * For the pixel shader threads are grouped into quads of four pixels.
2023 * The TIDs of the pixels of a quad are:
2031 * So, masking the TID with 0xfffffffc yields the TID of the top left pixel
2032 * of the quad, masking with 0xfffffffd yields the TID of the top pixel of
2033 * the current pixel's column, and masking with 0xfffffffe yields the TID
2034 * of the left pixel of the current pixel's row.
2036 * Adding 1 yields the TID of the pixel to the right of the left pixel, and
2037 * adding 2 yields the TID of the pixel below the top pixel.
2040 ac_build_ddxy(struct ac_llvm_context
*ctx
,
2045 unsigned tl_lanes
[4], trbl_lanes
[4];
2046 char name
[32], type
[8];
2047 LLVMValueRef tl
, trbl
;
2048 LLVMTypeRef result_type
;
2049 LLVMValueRef result
;
2051 result_type
= ac_to_float_type(ctx
, LLVMTypeOf(val
));
2053 if (result_type
== ctx
->f16
)
2054 val
= LLVMBuildZExt(ctx
->builder
, val
, ctx
->i32
, "");
2056 for (unsigned i
= 0; i
< 4; ++i
) {
2057 tl_lanes
[i
] = i
& mask
;
2058 trbl_lanes
[i
] = (i
& mask
) + idx
;
2061 tl
= ac_build_quad_swizzle(ctx
, val
,
2062 tl_lanes
[0], tl_lanes
[1],
2063 tl_lanes
[2], tl_lanes
[3]);
2064 trbl
= ac_build_quad_swizzle(ctx
, val
,
2065 trbl_lanes
[0], trbl_lanes
[1],
2066 trbl_lanes
[2], trbl_lanes
[3]);
2068 if (result_type
== ctx
->f16
) {
2069 tl
= LLVMBuildTrunc(ctx
->builder
, tl
, ctx
->i16
, "");
2070 trbl
= LLVMBuildTrunc(ctx
->builder
, trbl
, ctx
->i16
, "");
2073 tl
= LLVMBuildBitCast(ctx
->builder
, tl
, result_type
, "");
2074 trbl
= LLVMBuildBitCast(ctx
->builder
, trbl
, result_type
, "");
2075 result
= LLVMBuildFSub(ctx
->builder
, trbl
, tl
, "");
2077 ac_build_type_name_for_intr(result_type
, type
, sizeof(type
));
2078 snprintf(name
, sizeof(name
), "llvm.amdgcn.wqm.%s", type
);
2080 return ac_build_intrinsic(ctx
, name
, result_type
, &result
, 1, 0);
2084 ac_build_sendmsg(struct ac_llvm_context
*ctx
,
2086 LLVMValueRef wave_id
)
2088 LLVMValueRef args
[2];
2089 args
[0] = LLVMConstInt(ctx
->i32
, msg
, false);
2091 ac_build_intrinsic(ctx
, "llvm.amdgcn.s.sendmsg", ctx
->voidt
, args
, 2, 0);
2095 ac_build_imsb(struct ac_llvm_context
*ctx
,
2097 LLVMTypeRef dst_type
)
2099 LLVMValueRef msb
= ac_build_intrinsic(ctx
, "llvm.amdgcn.sffbh.i32",
2101 AC_FUNC_ATTR_READNONE
);
2103 /* The HW returns the last bit index from MSB, but NIR/TGSI wants
2104 * the index from LSB. Invert it by doing "31 - msb". */
2105 msb
= LLVMBuildSub(ctx
->builder
, LLVMConstInt(ctx
->i32
, 31, false),
2108 LLVMValueRef all_ones
= LLVMConstInt(ctx
->i32
, -1, true);
2109 LLVMValueRef cond
= LLVMBuildOr(ctx
->builder
,
2110 LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
,
2111 arg
, ctx
->i32_0
, ""),
2112 LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
,
2113 arg
, all_ones
, ""), "");
2115 return LLVMBuildSelect(ctx
->builder
, cond
, all_ones
, msb
, "");
2119 ac_build_umsb(struct ac_llvm_context
*ctx
,
2121 LLVMTypeRef dst_type
)
2123 const char *intrin_name
;
2125 LLVMValueRef highest_bit
;
2129 bitsize
= ac_get_elem_bits(ctx
, LLVMTypeOf(arg
));
2132 intrin_name
= "llvm.ctlz.i64";
2134 highest_bit
= LLVMConstInt(ctx
->i64
, 63, false);
2138 intrin_name
= "llvm.ctlz.i32";
2140 highest_bit
= LLVMConstInt(ctx
->i32
, 31, false);
2144 intrin_name
= "llvm.ctlz.i16";
2146 highest_bit
= LLVMConstInt(ctx
->i16
, 15, false);
2150 intrin_name
= "llvm.ctlz.i8";
2152 highest_bit
= LLVMConstInt(ctx
->i8
, 7, false);
2156 unreachable(!"invalid bitsize");
2160 LLVMValueRef params
[2] = {
2165 LLVMValueRef msb
= ac_build_intrinsic(ctx
, intrin_name
, type
,
2167 AC_FUNC_ATTR_READNONE
);
2169 /* The HW returns the last bit index from MSB, but TGSI/NIR wants
2170 * the index from LSB. Invert it by doing "31 - msb". */
2171 msb
= LLVMBuildSub(ctx
->builder
, highest_bit
, msb
, "");
2173 if (bitsize
== 64) {
2174 msb
= LLVMBuildTrunc(ctx
->builder
, msb
, ctx
->i32
, "");
2175 } else if (bitsize
< 32) {
2176 msb
= LLVMBuildSExt(ctx
->builder
, msb
, ctx
->i32
, "");
2179 /* check for zero */
2180 return LLVMBuildSelect(ctx
->builder
,
2181 LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, arg
, zero
, ""),
2182 LLVMConstInt(ctx
->i32
, -1, true), msb
, "");
2185 LLVMValueRef
ac_build_fmin(struct ac_llvm_context
*ctx
, LLVMValueRef a
,
2189 snprintf(name
, sizeof(name
), "llvm.minnum.f%d", ac_get_elem_bits(ctx
, LLVMTypeOf(a
)));
2190 LLVMValueRef args
[2] = {a
, b
};
2191 return ac_build_intrinsic(ctx
, name
, LLVMTypeOf(a
), args
, 2,
2192 AC_FUNC_ATTR_READNONE
);
2195 LLVMValueRef
ac_build_fmax(struct ac_llvm_context
*ctx
, LLVMValueRef a
,
2199 snprintf(name
, sizeof(name
), "llvm.maxnum.f%d", ac_get_elem_bits(ctx
, LLVMTypeOf(a
)));
2200 LLVMValueRef args
[2] = {a
, b
};
2201 return ac_build_intrinsic(ctx
, name
, LLVMTypeOf(a
), args
, 2,
2202 AC_FUNC_ATTR_READNONE
);
2205 LLVMValueRef
ac_build_imin(struct ac_llvm_context
*ctx
, LLVMValueRef a
,
2208 LLVMValueRef cmp
= LLVMBuildICmp(ctx
->builder
, LLVMIntSLE
, a
, b
, "");
2209 return LLVMBuildSelect(ctx
->builder
, cmp
, a
, b
, "");
2212 LLVMValueRef
ac_build_imax(struct ac_llvm_context
*ctx
, LLVMValueRef a
,
2215 LLVMValueRef cmp
= LLVMBuildICmp(ctx
->builder
, LLVMIntSGT
, a
, b
, "");
2216 return LLVMBuildSelect(ctx
->builder
, cmp
, a
, b
, "");
2219 LLVMValueRef
ac_build_umin(struct ac_llvm_context
*ctx
, LLVMValueRef a
,
2222 LLVMValueRef cmp
= LLVMBuildICmp(ctx
->builder
, LLVMIntULE
, a
, b
, "");
2223 return LLVMBuildSelect(ctx
->builder
, cmp
, a
, b
, "");
2226 LLVMValueRef
ac_build_umax(struct ac_llvm_context
*ctx
, LLVMValueRef a
,
2229 LLVMValueRef cmp
= LLVMBuildICmp(ctx
->builder
, LLVMIntUGE
, a
, b
, "");
2230 return LLVMBuildSelect(ctx
->builder
, cmp
, a
, b
, "");
2233 LLVMValueRef
ac_build_clamp(struct ac_llvm_context
*ctx
, LLVMValueRef value
)
2235 LLVMTypeRef t
= LLVMTypeOf(value
);
2236 return ac_build_fmin(ctx
, ac_build_fmax(ctx
, value
, LLVMConstReal(t
, 0.0)),
2237 LLVMConstReal(t
, 1.0));
2240 void ac_build_export(struct ac_llvm_context
*ctx
, struct ac_export_args
*a
)
2242 LLVMValueRef args
[9];
2244 args
[0] = LLVMConstInt(ctx
->i32
, a
->target
, 0);
2245 args
[1] = LLVMConstInt(ctx
->i32
, a
->enabled_channels
, 0);
2248 LLVMTypeRef i16
= LLVMInt16TypeInContext(ctx
->context
);
2249 LLVMTypeRef v2i16
= LLVMVectorType(i16
, 2);
2251 args
[2] = LLVMBuildBitCast(ctx
->builder
, a
->out
[0],
2253 args
[3] = LLVMBuildBitCast(ctx
->builder
, a
->out
[1],
2255 args
[4] = LLVMConstInt(ctx
->i1
, a
->done
, 0);
2256 args
[5] = LLVMConstInt(ctx
->i1
, a
->valid_mask
, 0);
2258 ac_build_intrinsic(ctx
, "llvm.amdgcn.exp.compr.v2i16",
2259 ctx
->voidt
, args
, 6, 0);
2261 args
[2] = a
->out
[0];
2262 args
[3] = a
->out
[1];
2263 args
[4] = a
->out
[2];
2264 args
[5] = a
->out
[3];
2265 args
[6] = LLVMConstInt(ctx
->i1
, a
->done
, 0);
2266 args
[7] = LLVMConstInt(ctx
->i1
, a
->valid_mask
, 0);
2268 ac_build_intrinsic(ctx
, "llvm.amdgcn.exp.f32",
2269 ctx
->voidt
, args
, 8, 0);
2273 void ac_build_export_null(struct ac_llvm_context
*ctx
)
2275 struct ac_export_args args
;
2277 args
.enabled_channels
= 0x0; /* enabled channels */
2278 args
.valid_mask
= 1; /* whether the EXEC mask is valid */
2279 args
.done
= 1; /* DONE bit */
2280 args
.target
= V_008DFC_SQ_EXP_NULL
;
2281 args
.compr
= 0; /* COMPR flag (0 = 32-bit export) */
2282 args
.out
[0] = LLVMGetUndef(ctx
->f32
); /* R */
2283 args
.out
[1] = LLVMGetUndef(ctx
->f32
); /* G */
2284 args
.out
[2] = LLVMGetUndef(ctx
->f32
); /* B */
2285 args
.out
[3] = LLVMGetUndef(ctx
->f32
); /* A */
2287 ac_build_export(ctx
, &args
);
2290 static unsigned ac_num_coords(enum ac_image_dim dim
)
2296 case ac_image_1darray
:
2300 case ac_image_2darray
:
2301 case ac_image_2dmsaa
:
2303 case ac_image_2darraymsaa
:
2306 unreachable("ac_num_coords: bad dim");
2310 static unsigned ac_num_derivs(enum ac_image_dim dim
)
2314 case ac_image_1darray
:
2317 case ac_image_2darray
:
2322 case ac_image_2dmsaa
:
2323 case ac_image_2darraymsaa
:
2325 unreachable("derivatives not supported");
2329 static const char *get_atomic_name(enum ac_atomic_op op
)
2332 case ac_atomic_swap
: return "swap";
2333 case ac_atomic_add
: return "add";
2334 case ac_atomic_sub
: return "sub";
2335 case ac_atomic_smin
: return "smin";
2336 case ac_atomic_umin
: return "umin";
2337 case ac_atomic_smax
: return "smax";
2338 case ac_atomic_umax
: return "umax";
2339 case ac_atomic_and
: return "and";
2340 case ac_atomic_or
: return "or";
2341 case ac_atomic_xor
: return "xor";
2342 case ac_atomic_inc_wrap
: return "inc";
2343 case ac_atomic_dec_wrap
: return "dec";
2345 unreachable("bad atomic op");
2348 LLVMValueRef
ac_build_image_opcode(struct ac_llvm_context
*ctx
,
2349 struct ac_image_args
*a
)
2351 const char *overload
[3] = { "", "", "" };
2352 unsigned num_overloads
= 0;
2353 LLVMValueRef args
[18];
2354 unsigned num_args
= 0;
2355 enum ac_image_dim dim
= a
->dim
;
2357 assert(!a
->lod
|| a
->lod
== ctx
->i32_0
|| a
->lod
== ctx
->f32_0
||
2359 assert((a
->opcode
!= ac_image_get_resinfo
&& a
->opcode
!= ac_image_load_mip
&&
2360 a
->opcode
!= ac_image_store_mip
) ||
2362 assert(a
->opcode
== ac_image_sample
|| a
->opcode
== ac_image_gather4
||
2363 (!a
->compare
&& !a
->offset
));
2364 assert((a
->opcode
== ac_image_sample
|| a
->opcode
== ac_image_gather4
||
2365 a
->opcode
== ac_image_get_lod
) ||
2367 assert((a
->bias
? 1 : 0) +
2369 (a
->level_zero
? 1 : 0) +
2370 (a
->derivs
[0] ? 1 : 0) <= 1);
2372 if (a
->opcode
== ac_image_get_lod
) {
2374 case ac_image_1darray
:
2377 case ac_image_2darray
:
2386 bool sample
= a
->opcode
== ac_image_sample
||
2387 a
->opcode
== ac_image_gather4
||
2388 a
->opcode
== ac_image_get_lod
;
2389 bool atomic
= a
->opcode
== ac_image_atomic
||
2390 a
->opcode
== ac_image_atomic_cmpswap
;
2391 bool load
= a
->opcode
== ac_image_sample
||
2392 a
->opcode
== ac_image_gather4
||
2393 a
->opcode
== ac_image_load
||
2394 a
->opcode
== ac_image_load_mip
;
2395 LLVMTypeRef coord_type
= sample
? ctx
->f32
: ctx
->i32
;
2397 if (atomic
|| a
->opcode
== ac_image_store
|| a
->opcode
== ac_image_store_mip
) {
2398 args
[num_args
++] = a
->data
[0];
2399 if (a
->opcode
== ac_image_atomic_cmpswap
)
2400 args
[num_args
++] = a
->data
[1];
2404 args
[num_args
++] = LLVMConstInt(ctx
->i32
, a
->dmask
, false);
2407 args
[num_args
++] = ac_to_integer(ctx
, a
->offset
);
2409 args
[num_args
++] = ac_to_float(ctx
, a
->bias
);
2410 overload
[num_overloads
++] = ".f32";
2413 args
[num_args
++] = ac_to_float(ctx
, a
->compare
);
2415 unsigned count
= ac_num_derivs(dim
);
2416 for (unsigned i
= 0; i
< count
; ++i
)
2417 args
[num_args
++] = ac_to_float(ctx
, a
->derivs
[i
]);
2418 overload
[num_overloads
++] = ".f32";
2420 unsigned num_coords
=
2421 a
->opcode
!= ac_image_get_resinfo
? ac_num_coords(dim
) : 0;
2422 for (unsigned i
= 0; i
< num_coords
; ++i
)
2423 args
[num_args
++] = LLVMBuildBitCast(ctx
->builder
, a
->coords
[i
], coord_type
, "");
2425 args
[num_args
++] = LLVMBuildBitCast(ctx
->builder
, a
->lod
, coord_type
, "");
2426 overload
[num_overloads
++] = sample
? ".f32" : ".i32";
2428 args
[num_args
++] = a
->resource
;
2430 args
[num_args
++] = a
->sampler
;
2431 args
[num_args
++] = LLVMConstInt(ctx
->i1
, a
->unorm
, false);
2434 args
[num_args
++] = ctx
->i32_0
; /* texfailctrl */
2435 args
[num_args
++] = LLVMConstInt(ctx
->i32
,
2436 load
? get_load_cache_policy(ctx
, a
->cache_policy
) :
2437 a
->cache_policy
, false);
2440 const char *atomic_subop
= "";
2441 switch (a
->opcode
) {
2442 case ac_image_sample
: name
= "sample"; break;
2443 case ac_image_gather4
: name
= "gather4"; break;
2444 case ac_image_load
: name
= "load"; break;
2445 case ac_image_load_mip
: name
= "load.mip"; break;
2446 case ac_image_store
: name
= "store"; break;
2447 case ac_image_store_mip
: name
= "store.mip"; break;
2448 case ac_image_atomic
:
2450 atomic_subop
= get_atomic_name(a
->atomic
);
2452 case ac_image_atomic_cmpswap
:
2454 atomic_subop
= "cmpswap";
2456 case ac_image_get_lod
: name
= "getlod"; break;
2457 case ac_image_get_resinfo
: name
= "getresinfo"; break;
2458 default: unreachable("invalid image opcode");
2461 const char *dimname
;
2463 case ac_image_1d
: dimname
= "1d"; break;
2464 case ac_image_2d
: dimname
= "2d"; break;
2465 case ac_image_3d
: dimname
= "3d"; break;
2466 case ac_image_cube
: dimname
= "cube"; break;
2467 case ac_image_1darray
: dimname
= "1darray"; break;
2468 case ac_image_2darray
: dimname
= "2darray"; break;
2469 case ac_image_2dmsaa
: dimname
= "2dmsaa"; break;
2470 case ac_image_2darraymsaa
: dimname
= "2darraymsaa"; break;
2471 default: unreachable("invalid dim");
2475 a
->lod
&& (a
->opcode
== ac_image_sample
|| a
->opcode
== ac_image_gather4
);
2477 snprintf(intr_name
, sizeof(intr_name
),
2478 "llvm.amdgcn.image.%s%s" /* base name */
2479 "%s%s%s" /* sample/gather modifiers */
2480 ".%s.%s%s%s%s", /* dimension and type overloads */
2482 a
->compare
? ".c" : "",
2485 a
->derivs
[0] ? ".d" :
2486 a
->level_zero
? ".lz" : "",
2487 a
->offset
? ".o" : "",
2489 atomic
? "i32" : "v4f32",
2490 overload
[0], overload
[1], overload
[2]);
2495 else if (a
->opcode
== ac_image_store
|| a
->opcode
== ac_image_store_mip
)
2500 LLVMValueRef result
=
2501 ac_build_intrinsic(ctx
, intr_name
, retty
, args
, num_args
,
2503 if (!sample
&& retty
== ctx
->v4f32
) {
2504 result
= LLVMBuildBitCast(ctx
->builder
, result
,
2510 LLVMValueRef
ac_build_image_get_sample_count(struct ac_llvm_context
*ctx
,
2513 LLVMValueRef samples
;
2515 /* Read the samples from the descriptor directly.
2516 * Hardware doesn't have any instruction for this.
2518 samples
= LLVMBuildExtractElement(ctx
->builder
, rsrc
,
2519 LLVMConstInt(ctx
->i32
, 3, 0), "");
2520 samples
= LLVMBuildLShr(ctx
->builder
, samples
,
2521 LLVMConstInt(ctx
->i32
, 16, 0), "");
2522 samples
= LLVMBuildAnd(ctx
->builder
, samples
,
2523 LLVMConstInt(ctx
->i32
, 0xf, 0), "");
2524 samples
= LLVMBuildShl(ctx
->builder
, ctx
->i32_1
,
2529 LLVMValueRef
ac_build_cvt_pkrtz_f16(struct ac_llvm_context
*ctx
,
2530 LLVMValueRef args
[2])
2533 LLVMVectorType(LLVMHalfTypeInContext(ctx
->context
), 2);
2535 return ac_build_intrinsic(ctx
, "llvm.amdgcn.cvt.pkrtz", v2f16
,
2536 args
, 2, AC_FUNC_ATTR_READNONE
);
2539 LLVMValueRef
ac_build_cvt_pknorm_i16(struct ac_llvm_context
*ctx
,
2540 LLVMValueRef args
[2])
2543 ac_build_intrinsic(ctx
, "llvm.amdgcn.cvt.pknorm.i16",
2544 ctx
->v2i16
, args
, 2,
2545 AC_FUNC_ATTR_READNONE
);
2546 return LLVMBuildBitCast(ctx
->builder
, res
, ctx
->i32
, "");
2549 LLVMValueRef
ac_build_cvt_pknorm_u16(struct ac_llvm_context
*ctx
,
2550 LLVMValueRef args
[2])
2553 ac_build_intrinsic(ctx
, "llvm.amdgcn.cvt.pknorm.u16",
2554 ctx
->v2i16
, args
, 2,
2555 AC_FUNC_ATTR_READNONE
);
2556 return LLVMBuildBitCast(ctx
->builder
, res
, ctx
->i32
, "");
2559 /* The 8-bit and 10-bit clamping is for HW workarounds. */
2560 LLVMValueRef
ac_build_cvt_pk_i16(struct ac_llvm_context
*ctx
,
2561 LLVMValueRef args
[2], unsigned bits
, bool hi
)
2563 assert(bits
== 8 || bits
== 10 || bits
== 16);
2565 LLVMValueRef max_rgb
= LLVMConstInt(ctx
->i32
,
2566 bits
== 8 ? 127 : bits
== 10 ? 511 : 32767, 0);
2567 LLVMValueRef min_rgb
= LLVMConstInt(ctx
->i32
,
2568 bits
== 8 ? -128 : bits
== 10 ? -512 : -32768, 0);
2569 LLVMValueRef max_alpha
=
2570 bits
!= 10 ? max_rgb
: ctx
->i32_1
;
2571 LLVMValueRef min_alpha
=
2572 bits
!= 10 ? min_rgb
: LLVMConstInt(ctx
->i32
, -2, 0);
2576 for (int i
= 0; i
< 2; i
++) {
2577 bool alpha
= hi
&& i
== 1;
2578 args
[i
] = ac_build_imin(ctx
, args
[i
],
2579 alpha
? max_alpha
: max_rgb
);
2580 args
[i
] = ac_build_imax(ctx
, args
[i
],
2581 alpha
? min_alpha
: min_rgb
);
2586 ac_build_intrinsic(ctx
, "llvm.amdgcn.cvt.pk.i16",
2587 ctx
->v2i16
, args
, 2,
2588 AC_FUNC_ATTR_READNONE
);
2589 return LLVMBuildBitCast(ctx
->builder
, res
, ctx
->i32
, "");
2592 /* The 8-bit and 10-bit clamping is for HW workarounds. */
2593 LLVMValueRef
ac_build_cvt_pk_u16(struct ac_llvm_context
*ctx
,
2594 LLVMValueRef args
[2], unsigned bits
, bool hi
)
2596 assert(bits
== 8 || bits
== 10 || bits
== 16);
2598 LLVMValueRef max_rgb
= LLVMConstInt(ctx
->i32
,
2599 bits
== 8 ? 255 : bits
== 10 ? 1023 : 65535, 0);
2600 LLVMValueRef max_alpha
=
2601 bits
!= 10 ? max_rgb
: LLVMConstInt(ctx
->i32
, 3, 0);
2605 for (int i
= 0; i
< 2; i
++) {
2606 bool alpha
= hi
&& i
== 1;
2607 args
[i
] = ac_build_umin(ctx
, args
[i
],
2608 alpha
? max_alpha
: max_rgb
);
2613 ac_build_intrinsic(ctx
, "llvm.amdgcn.cvt.pk.u16",
2614 ctx
->v2i16
, args
, 2,
2615 AC_FUNC_ATTR_READNONE
);
2616 return LLVMBuildBitCast(ctx
->builder
, res
, ctx
->i32
, "");
2619 LLVMValueRef
ac_build_wqm_vote(struct ac_llvm_context
*ctx
, LLVMValueRef i1
)
2621 return ac_build_intrinsic(ctx
, "llvm.amdgcn.wqm.vote", ctx
->i1
,
2622 &i1
, 1, AC_FUNC_ATTR_READNONE
);
2625 void ac_build_kill_if_false(struct ac_llvm_context
*ctx
, LLVMValueRef i1
)
2627 ac_build_intrinsic(ctx
, "llvm.amdgcn.kill", ctx
->voidt
,
2631 LLVMValueRef
ac_build_bfe(struct ac_llvm_context
*ctx
, LLVMValueRef input
,
2632 LLVMValueRef offset
, LLVMValueRef width
,
2635 LLVMValueRef args
[] = {
2641 return ac_build_intrinsic(ctx
, is_signed
? "llvm.amdgcn.sbfe.i32" :
2642 "llvm.amdgcn.ubfe.i32",
2643 ctx
->i32
, args
, 3, AC_FUNC_ATTR_READNONE
);
2647 LLVMValueRef
ac_build_imad(struct ac_llvm_context
*ctx
, LLVMValueRef s0
,
2648 LLVMValueRef s1
, LLVMValueRef s2
)
2650 return LLVMBuildAdd(ctx
->builder
,
2651 LLVMBuildMul(ctx
->builder
, s0
, s1
, ""), s2
, "");
2654 LLVMValueRef
ac_build_fmad(struct ac_llvm_context
*ctx
, LLVMValueRef s0
,
2655 LLVMValueRef s1
, LLVMValueRef s2
)
2657 /* FMA is better on GFX10, because it has FMA units instead of MUL-ADD units. */
2658 if (ctx
->chip_class
>= GFX10
) {
2659 return ac_build_intrinsic(ctx
, "llvm.fma.f32", ctx
->f32
,
2660 (LLVMValueRef
[]) {s0
, s1
, s2
}, 3,
2661 AC_FUNC_ATTR_READNONE
);
2664 return LLVMBuildFAdd(ctx
->builder
,
2665 LLVMBuildFMul(ctx
->builder
, s0
, s1
, ""), s2
, "");
2668 void ac_build_waitcnt(struct ac_llvm_context
*ctx
, unsigned wait_flags
)
2673 unsigned lgkmcnt
= 63;
2674 unsigned vmcnt
= ctx
->chip_class
>= GFX9
? 63 : 15;
2675 unsigned vscnt
= 63;
2677 if (wait_flags
& AC_WAIT_LGKM
)
2679 if (wait_flags
& AC_WAIT_VLOAD
)
2682 if (wait_flags
& AC_WAIT_VSTORE
) {
2683 if (ctx
->chip_class
>= GFX10
)
2689 /* There is no intrinsic for vscnt(0), so use a fence. */
2690 if ((wait_flags
& AC_WAIT_LGKM
&&
2691 wait_flags
& AC_WAIT_VLOAD
&&
2692 wait_flags
& AC_WAIT_VSTORE
) ||
2694 LLVMBuildFence(ctx
->builder
, LLVMAtomicOrderingRelease
, false, "");
2698 unsigned simm16
= (lgkmcnt
<< 8) |
2699 (7 << 4) | /* expcnt */
2701 ((vmcnt
>> 4) << 14);
2703 LLVMValueRef args
[1] = {
2704 LLVMConstInt(ctx
->i32
, simm16
, false),
2706 ac_build_intrinsic(ctx
, "llvm.amdgcn.s.waitcnt",
2707 ctx
->voidt
, args
, 1, 0);
2710 LLVMValueRef
ac_build_fmed3(struct ac_llvm_context
*ctx
, LLVMValueRef src0
,
2711 LLVMValueRef src1
, LLVMValueRef src2
,
2717 if (bitsize
== 16) {
2718 intr
= "llvm.amdgcn.fmed3.f16";
2720 } else if (bitsize
== 32) {
2721 intr
= "llvm.amdgcn.fmed3.f32";
2724 intr
= "llvm.amdgcn.fmed3.f64";
2728 LLVMValueRef params
[] = {
2733 return ac_build_intrinsic(ctx
, intr
, type
, params
, 3,
2734 AC_FUNC_ATTR_READNONE
);
2737 LLVMValueRef
ac_build_fract(struct ac_llvm_context
*ctx
, LLVMValueRef src0
,
2743 if (bitsize
== 16) {
2744 intr
= "llvm.amdgcn.fract.f16";
2746 } else if (bitsize
== 32) {
2747 intr
= "llvm.amdgcn.fract.f32";
2750 intr
= "llvm.amdgcn.fract.f64";
2754 LLVMValueRef params
[] = {
2757 return ac_build_intrinsic(ctx
, intr
, type
, params
, 1,
2758 AC_FUNC_ATTR_READNONE
);
2761 LLVMValueRef
ac_build_isign(struct ac_llvm_context
*ctx
, LLVMValueRef src0
,
2764 LLVMTypeRef type
= LLVMIntTypeInContext(ctx
->context
, bitsize
);
2765 LLVMValueRef zero
= LLVMConstInt(type
, 0, false);
2766 LLVMValueRef one
= LLVMConstInt(type
, 1, false);
2768 LLVMValueRef cmp
, val
;
2769 cmp
= LLVMBuildICmp(ctx
->builder
, LLVMIntSGT
, src0
, zero
, "");
2770 val
= LLVMBuildSelect(ctx
->builder
, cmp
, one
, src0
, "");
2771 cmp
= LLVMBuildICmp(ctx
->builder
, LLVMIntSGE
, val
, zero
, "");
2772 val
= LLVMBuildSelect(ctx
->builder
, cmp
, val
, LLVMConstInt(type
, -1, true), "");
2776 LLVMValueRef
ac_build_fsign(struct ac_llvm_context
*ctx
, LLVMValueRef src0
,
2779 LLVMValueRef cmp
, val
, zero
, one
;
2782 if (bitsize
== 16) {
2786 } else if (bitsize
== 32) {
2796 cmp
= LLVMBuildFCmp(ctx
->builder
, LLVMRealOGT
, src0
, zero
, "");
2797 val
= LLVMBuildSelect(ctx
->builder
, cmp
, one
, src0
, "");
2798 cmp
= LLVMBuildFCmp(ctx
->builder
, LLVMRealOGE
, val
, zero
, "");
2799 val
= LLVMBuildSelect(ctx
->builder
, cmp
, val
, LLVMConstReal(type
, -1.0), "");
2803 LLVMValueRef
ac_build_bit_count(struct ac_llvm_context
*ctx
, LLVMValueRef src0
)
2805 LLVMValueRef result
;
2808 bitsize
= ac_get_elem_bits(ctx
, LLVMTypeOf(src0
));
2812 result
= ac_build_intrinsic(ctx
, "llvm.ctpop.i64", ctx
->i64
,
2813 (LLVMValueRef
[]) { src0
}, 1,
2814 AC_FUNC_ATTR_READNONE
);
2816 result
= LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i32
, "");
2819 result
= ac_build_intrinsic(ctx
, "llvm.ctpop.i32", ctx
->i32
,
2820 (LLVMValueRef
[]) { src0
}, 1,
2821 AC_FUNC_ATTR_READNONE
);
2824 result
= ac_build_intrinsic(ctx
, "llvm.ctpop.i16", ctx
->i16
,
2825 (LLVMValueRef
[]) { src0
}, 1,
2826 AC_FUNC_ATTR_READNONE
);
2828 result
= LLVMBuildZExt(ctx
->builder
, result
, ctx
->i32
, "");
2831 result
= ac_build_intrinsic(ctx
, "llvm.ctpop.i8", ctx
->i8
,
2832 (LLVMValueRef
[]) { src0
}, 1,
2833 AC_FUNC_ATTR_READNONE
);
2835 result
= LLVMBuildZExt(ctx
->builder
, result
, ctx
->i32
, "");
2838 unreachable(!"invalid bitsize");
2845 LLVMValueRef
ac_build_bitfield_reverse(struct ac_llvm_context
*ctx
,
2848 LLVMValueRef result
;
2851 bitsize
= ac_get_elem_bits(ctx
, LLVMTypeOf(src0
));
2855 result
= ac_build_intrinsic(ctx
, "llvm.bitreverse.i64", ctx
->i64
,
2856 (LLVMValueRef
[]) { src0
}, 1,
2857 AC_FUNC_ATTR_READNONE
);
2859 result
= LLVMBuildTrunc(ctx
->builder
, result
, ctx
->i32
, "");
2862 result
= ac_build_intrinsic(ctx
, "llvm.bitreverse.i32", ctx
->i32
,
2863 (LLVMValueRef
[]) { src0
}, 1,
2864 AC_FUNC_ATTR_READNONE
);
2867 result
= ac_build_intrinsic(ctx
, "llvm.bitreverse.i16", ctx
->i16
,
2868 (LLVMValueRef
[]) { src0
}, 1,
2869 AC_FUNC_ATTR_READNONE
);
2871 result
= LLVMBuildZExt(ctx
->builder
, result
, ctx
->i32
, "");
2874 result
= ac_build_intrinsic(ctx
, "llvm.bitreverse.i8", ctx
->i8
,
2875 (LLVMValueRef
[]) { src0
}, 1,
2876 AC_FUNC_ATTR_READNONE
);
2878 result
= LLVMBuildZExt(ctx
->builder
, result
, ctx
->i32
, "");
2881 unreachable(!"invalid bitsize");
2888 #define AC_EXP_TARGET 0
2889 #define AC_EXP_ENABLED_CHANNELS 1
2890 #define AC_EXP_OUT0 2
2898 struct ac_vs_exp_chan
2902 enum ac_ir_type type
;
2905 struct ac_vs_exp_inst
{
2908 struct ac_vs_exp_chan chan
[4];
2911 struct ac_vs_exports
{
2913 struct ac_vs_exp_inst exp
[VARYING_SLOT_MAX
];
2916 /* Return true if the PARAM export has been eliminated. */
2917 static bool ac_eliminate_const_output(uint8_t *vs_output_param_offset
,
2918 uint32_t num_outputs
,
2919 struct ac_vs_exp_inst
*exp
)
2921 unsigned i
, default_val
; /* SPI_PS_INPUT_CNTL_i.DEFAULT_VAL */
2922 bool is_zero
[4] = {}, is_one
[4] = {};
2924 for (i
= 0; i
< 4; i
++) {
2925 /* It's a constant expression. Undef outputs are eliminated too. */
2926 if (exp
->chan
[i
].type
== AC_IR_UNDEF
) {
2929 } else if (exp
->chan
[i
].type
== AC_IR_CONST
) {
2930 if (exp
->chan
[i
].const_float
== 0)
2932 else if (exp
->chan
[i
].const_float
== 1)
2935 return false; /* other constant */
2940 /* Only certain combinations of 0 and 1 can be eliminated. */
2941 if (is_zero
[0] && is_zero
[1] && is_zero
[2])
2942 default_val
= is_zero
[3] ? 0 : 1;
2943 else if (is_one
[0] && is_one
[1] && is_one
[2])
2944 default_val
= is_zero
[3] ? 2 : 3;
2948 /* The PARAM export can be represented as DEFAULT_VAL. Kill it. */
2949 LLVMInstructionEraseFromParent(exp
->inst
);
2951 /* Change OFFSET to DEFAULT_VAL. */
2952 for (i
= 0; i
< num_outputs
; i
++) {
2953 if (vs_output_param_offset
[i
] == exp
->offset
) {
2954 vs_output_param_offset
[i
] =
2955 AC_EXP_PARAM_DEFAULT_VAL_0000
+ default_val
;
2962 static bool ac_eliminate_duplicated_output(struct ac_llvm_context
*ctx
,
2963 uint8_t *vs_output_param_offset
,
2964 uint32_t num_outputs
,
2965 struct ac_vs_exports
*processed
,
2966 struct ac_vs_exp_inst
*exp
)
2968 unsigned p
, copy_back_channels
= 0;
2970 /* See if the output is already in the list of processed outputs.
2971 * The LLVMValueRef comparison relies on SSA.
2973 for (p
= 0; p
< processed
->num
; p
++) {
2974 bool different
= false;
2976 for (unsigned j
= 0; j
< 4; j
++) {
2977 struct ac_vs_exp_chan
*c1
= &processed
->exp
[p
].chan
[j
];
2978 struct ac_vs_exp_chan
*c2
= &exp
->chan
[j
];
2980 /* Treat undef as a match. */
2981 if (c2
->type
== AC_IR_UNDEF
)
2984 /* If c1 is undef but c2 isn't, we can copy c2 to c1
2985 * and consider the instruction duplicated.
2987 if (c1
->type
== AC_IR_UNDEF
) {
2988 copy_back_channels
|= 1 << j
;
2992 /* Test whether the channels are not equal. */
2993 if (c1
->type
!= c2
->type
||
2994 (c1
->type
== AC_IR_CONST
&&
2995 c1
->const_float
!= c2
->const_float
) ||
2996 (c1
->type
== AC_IR_VALUE
&&
2997 c1
->value
!= c2
->value
)) {
3005 copy_back_channels
= 0;
3007 if (p
== processed
->num
)
3010 /* If a match was found, but the matching export has undef where the new
3011 * one has a normal value, copy the normal value to the undef channel.
3013 struct ac_vs_exp_inst
*match
= &processed
->exp
[p
];
3015 /* Get current enabled channels mask. */
3016 LLVMValueRef arg
= LLVMGetOperand(match
->inst
, AC_EXP_ENABLED_CHANNELS
);
3017 unsigned enabled_channels
= LLVMConstIntGetZExtValue(arg
);
3019 while (copy_back_channels
) {
3020 unsigned chan
= u_bit_scan(©_back_channels
);
3022 assert(match
->chan
[chan
].type
== AC_IR_UNDEF
);
3023 LLVMSetOperand(match
->inst
, AC_EXP_OUT0
+ chan
,
3024 exp
->chan
[chan
].value
);
3025 match
->chan
[chan
] = exp
->chan
[chan
];
3027 /* Update number of enabled channels because the original mask
3028 * is not always 0xf.
3030 enabled_channels
|= (1 << chan
);
3031 LLVMSetOperand(match
->inst
, AC_EXP_ENABLED_CHANNELS
,
3032 LLVMConstInt(ctx
->i32
, enabled_channels
, 0));
3035 /* The PARAM export is duplicated. Kill it. */
3036 LLVMInstructionEraseFromParent(exp
->inst
);
3038 /* Change OFFSET to the matching export. */
3039 for (unsigned i
= 0; i
< num_outputs
; i
++) {
3040 if (vs_output_param_offset
[i
] == exp
->offset
) {
3041 vs_output_param_offset
[i
] = match
->offset
;
3048 void ac_optimize_vs_outputs(struct ac_llvm_context
*ctx
,
3049 LLVMValueRef main_fn
,
3050 uint8_t *vs_output_param_offset
,
3051 uint32_t num_outputs
,
3052 uint8_t *num_param_exports
)
3054 LLVMBasicBlockRef bb
;
3055 bool removed_any
= false;
3056 struct ac_vs_exports exports
;
3060 /* Process all LLVM instructions. */
3061 bb
= LLVMGetFirstBasicBlock(main_fn
);
3063 LLVMValueRef inst
= LLVMGetFirstInstruction(bb
);
3066 LLVMValueRef cur
= inst
;
3067 inst
= LLVMGetNextInstruction(inst
);
3068 struct ac_vs_exp_inst exp
;
3070 if (LLVMGetInstructionOpcode(cur
) != LLVMCall
)
3073 LLVMValueRef callee
= ac_llvm_get_called_value(cur
);
3075 if (!ac_llvm_is_function(callee
))
3078 const char *name
= LLVMGetValueName(callee
);
3079 unsigned num_args
= LLVMCountParams(callee
);
3081 /* Check if this is an export instruction. */
3082 if ((num_args
!= 9 && num_args
!= 8) ||
3083 (strcmp(name
, "llvm.SI.export") &&
3084 strcmp(name
, "llvm.amdgcn.exp.f32")))
3087 LLVMValueRef arg
= LLVMGetOperand(cur
, AC_EXP_TARGET
);
3088 unsigned target
= LLVMConstIntGetZExtValue(arg
);
3090 if (target
< V_008DFC_SQ_EXP_PARAM
)
3093 target
-= V_008DFC_SQ_EXP_PARAM
;
3095 /* Parse the instruction. */
3096 memset(&exp
, 0, sizeof(exp
));
3097 exp
.offset
= target
;
3100 for (unsigned i
= 0; i
< 4; i
++) {
3101 LLVMValueRef v
= LLVMGetOperand(cur
, AC_EXP_OUT0
+ i
);
3103 exp
.chan
[i
].value
= v
;
3105 if (LLVMIsUndef(v
)) {
3106 exp
.chan
[i
].type
= AC_IR_UNDEF
;
3107 } else if (LLVMIsAConstantFP(v
)) {
3108 LLVMBool loses_info
;
3109 exp
.chan
[i
].type
= AC_IR_CONST
;
3110 exp
.chan
[i
].const_float
=
3111 LLVMConstRealGetDouble(v
, &loses_info
);
3113 exp
.chan
[i
].type
= AC_IR_VALUE
;
3117 /* Eliminate constant and duplicated PARAM exports. */
3118 if (ac_eliminate_const_output(vs_output_param_offset
,
3119 num_outputs
, &exp
) ||
3120 ac_eliminate_duplicated_output(ctx
,
3121 vs_output_param_offset
,
3122 num_outputs
, &exports
,
3126 exports
.exp
[exports
.num
++] = exp
;
3129 bb
= LLVMGetNextBasicBlock(bb
);
3132 /* Remove holes in export memory due to removed PARAM exports.
3133 * This is done by renumbering all PARAM exports.
3136 uint8_t old_offset
[VARYING_SLOT_MAX
];
3139 /* Make a copy of the offsets. We need the old version while
3140 * we are modifying some of them. */
3141 memcpy(old_offset
, vs_output_param_offset
,
3142 sizeof(old_offset
));
3144 for (i
= 0; i
< exports
.num
; i
++) {
3145 unsigned offset
= exports
.exp
[i
].offset
;
3147 /* Update vs_output_param_offset. Multiple outputs can
3148 * have the same offset.
3150 for (out
= 0; out
< num_outputs
; out
++) {
3151 if (old_offset
[out
] == offset
)
3152 vs_output_param_offset
[out
] = i
;
3155 /* Change the PARAM offset in the instruction. */
3156 LLVMSetOperand(exports
.exp
[i
].inst
, AC_EXP_TARGET
,
3157 LLVMConstInt(ctx
->i32
,
3158 V_008DFC_SQ_EXP_PARAM
+ i
, 0));
3160 *num_param_exports
= exports
.num
;
3164 void ac_init_exec_full_mask(struct ac_llvm_context
*ctx
)
3166 LLVMValueRef full_mask
= LLVMConstInt(ctx
->i64
, ~0ull, 0);
3167 ac_build_intrinsic(ctx
,
3168 "llvm.amdgcn.init.exec", ctx
->voidt
,
3169 &full_mask
, 1, AC_FUNC_ATTR_CONVERGENT
);
3172 void ac_declare_lds_as_pointer(struct ac_llvm_context
*ctx
)
3174 unsigned lds_size
= ctx
->chip_class
>= GFX7
? 65536 : 32768;
3175 ctx
->lds
= LLVMBuildIntToPtr(ctx
->builder
, ctx
->i32_0
,
3176 LLVMPointerType(LLVMArrayType(ctx
->i32
, lds_size
/ 4), AC_ADDR_SPACE_LDS
),
3180 LLVMValueRef
ac_lds_load(struct ac_llvm_context
*ctx
,
3181 LLVMValueRef dw_addr
)
3183 return LLVMBuildLoad(ctx
->builder
, ac_build_gep0(ctx
, ctx
->lds
, dw_addr
), "");
3186 void ac_lds_store(struct ac_llvm_context
*ctx
,
3187 LLVMValueRef dw_addr
,
3190 value
= ac_to_integer(ctx
, value
);
3191 ac_build_indexed_store(ctx
, ctx
->lds
,
3195 LLVMValueRef
ac_find_lsb(struct ac_llvm_context
*ctx
,
3196 LLVMTypeRef dst_type
,
3199 unsigned src0_bitsize
= ac_get_elem_bits(ctx
, LLVMTypeOf(src0
));
3200 const char *intrin_name
;
3204 switch (src0_bitsize
) {
3206 intrin_name
= "llvm.cttz.i64";
3211 intrin_name
= "llvm.cttz.i32";
3216 intrin_name
= "llvm.cttz.i16";
3221 intrin_name
= "llvm.cttz.i8";
3226 unreachable(!"invalid bitsize");
3229 LLVMValueRef params
[2] = {
3232 /* The value of 1 means that ffs(x=0) = undef, so LLVM won't
3233 * add special code to check for x=0. The reason is that
3234 * the LLVM behavior for x=0 is different from what we
3235 * need here. However, LLVM also assumes that ffs(x) is
3236 * in [0, 31], but GLSL expects that ffs(0) = -1, so
3237 * a conditional assignment to handle 0 is still required.
3239 * The hardware already implements the correct behavior.
3244 LLVMValueRef lsb
= ac_build_intrinsic(ctx
, intrin_name
, type
,
3246 AC_FUNC_ATTR_READNONE
);
3248 if (src0_bitsize
== 64) {
3249 lsb
= LLVMBuildTrunc(ctx
->builder
, lsb
, ctx
->i32
, "");
3250 } else if (src0_bitsize
< 32) {
3251 lsb
= LLVMBuildSExt(ctx
->builder
, lsb
, ctx
->i32
, "");
3254 /* TODO: We need an intrinsic to skip this conditional. */
3255 /* Check for zero: */
3256 return LLVMBuildSelect(ctx
->builder
, LLVMBuildICmp(ctx
->builder
,
3259 LLVMConstInt(ctx
->i32
, -1, 0), lsb
, "");
3262 LLVMTypeRef
ac_array_in_const_addr_space(LLVMTypeRef elem_type
)
3264 return LLVMPointerType(elem_type
, AC_ADDR_SPACE_CONST
);
3267 LLVMTypeRef
ac_array_in_const32_addr_space(LLVMTypeRef elem_type
)
3269 return LLVMPointerType(elem_type
, AC_ADDR_SPACE_CONST_32BIT
);
3272 static struct ac_llvm_flow
*
3273 get_current_flow(struct ac_llvm_context
*ctx
)
3275 if (ctx
->flow
->depth
> 0)
3276 return &ctx
->flow
->stack
[ctx
->flow
->depth
- 1];
3280 static struct ac_llvm_flow
*
3281 get_innermost_loop(struct ac_llvm_context
*ctx
)
3283 for (unsigned i
= ctx
->flow
->depth
; i
> 0; --i
) {
3284 if (ctx
->flow
->stack
[i
- 1].loop_entry_block
)
3285 return &ctx
->flow
->stack
[i
- 1];
3290 static struct ac_llvm_flow
*
3291 push_flow(struct ac_llvm_context
*ctx
)
3293 struct ac_llvm_flow
*flow
;
3295 if (ctx
->flow
->depth
>= ctx
->flow
->depth_max
) {
3296 unsigned new_max
= MAX2(ctx
->flow
->depth
<< 1,
3297 AC_LLVM_INITIAL_CF_DEPTH
);
3299 ctx
->flow
->stack
= realloc(ctx
->flow
->stack
, new_max
* sizeof(*ctx
->flow
->stack
));
3300 ctx
->flow
->depth_max
= new_max
;
3303 flow
= &ctx
->flow
->stack
[ctx
->flow
->depth
];
3306 flow
->next_block
= NULL
;
3307 flow
->loop_entry_block
= NULL
;
3311 static void set_basicblock_name(LLVMBasicBlockRef bb
, const char *base
,
3315 snprintf(buf
, sizeof(buf
), "%s%d", base
, label_id
);
3316 LLVMSetValueName(LLVMBasicBlockAsValue(bb
), buf
);
3319 /* Append a basic block at the level of the parent flow.
3321 static LLVMBasicBlockRef
append_basic_block(struct ac_llvm_context
*ctx
,
3324 assert(ctx
->flow
->depth
>= 1);
3326 if (ctx
->flow
->depth
>= 2) {
3327 struct ac_llvm_flow
*flow
= &ctx
->flow
->stack
[ctx
->flow
->depth
- 2];
3329 return LLVMInsertBasicBlockInContext(ctx
->context
,
3330 flow
->next_block
, name
);
3333 LLVMValueRef main_fn
=
3334 LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx
->builder
));
3335 return LLVMAppendBasicBlockInContext(ctx
->context
, main_fn
, name
);
3338 /* Emit a branch to the given default target for the current block if
3339 * applicable -- that is, if the current block does not already contain a
3340 * branch from a break or continue.
3342 static void emit_default_branch(LLVMBuilderRef builder
,
3343 LLVMBasicBlockRef target
)
3345 if (!LLVMGetBasicBlockTerminator(LLVMGetInsertBlock(builder
)))
3346 LLVMBuildBr(builder
, target
);
3349 void ac_build_bgnloop(struct ac_llvm_context
*ctx
, int label_id
)
3351 struct ac_llvm_flow
*flow
= push_flow(ctx
);
3352 flow
->loop_entry_block
= append_basic_block(ctx
, "LOOP");
3353 flow
->next_block
= append_basic_block(ctx
, "ENDLOOP");
3354 set_basicblock_name(flow
->loop_entry_block
, "loop", label_id
);
3355 LLVMBuildBr(ctx
->builder
, flow
->loop_entry_block
);
3356 LLVMPositionBuilderAtEnd(ctx
->builder
, flow
->loop_entry_block
);
3359 void ac_build_break(struct ac_llvm_context
*ctx
)
3361 struct ac_llvm_flow
*flow
= get_innermost_loop(ctx
);
3362 LLVMBuildBr(ctx
->builder
, flow
->next_block
);
3365 void ac_build_continue(struct ac_llvm_context
*ctx
)
3367 struct ac_llvm_flow
*flow
= get_innermost_loop(ctx
);
3368 LLVMBuildBr(ctx
->builder
, flow
->loop_entry_block
);
3371 void ac_build_else(struct ac_llvm_context
*ctx
, int label_id
)
3373 struct ac_llvm_flow
*current_branch
= get_current_flow(ctx
);
3374 LLVMBasicBlockRef endif_block
;
3376 assert(!current_branch
->loop_entry_block
);
3378 endif_block
= append_basic_block(ctx
, "ENDIF");
3379 emit_default_branch(ctx
->builder
, endif_block
);
3381 LLVMPositionBuilderAtEnd(ctx
->builder
, current_branch
->next_block
);
3382 set_basicblock_name(current_branch
->next_block
, "else", label_id
);
3384 current_branch
->next_block
= endif_block
;
3387 void ac_build_endif(struct ac_llvm_context
*ctx
, int label_id
)
3389 struct ac_llvm_flow
*current_branch
= get_current_flow(ctx
);
3391 assert(!current_branch
->loop_entry_block
);
3393 emit_default_branch(ctx
->builder
, current_branch
->next_block
);
3394 LLVMPositionBuilderAtEnd(ctx
->builder
, current_branch
->next_block
);
3395 set_basicblock_name(current_branch
->next_block
, "endif", label_id
);
3400 void ac_build_endloop(struct ac_llvm_context
*ctx
, int label_id
)
3402 struct ac_llvm_flow
*current_loop
= get_current_flow(ctx
);
3404 assert(current_loop
->loop_entry_block
);
3406 emit_default_branch(ctx
->builder
, current_loop
->loop_entry_block
);
3408 LLVMPositionBuilderAtEnd(ctx
->builder
, current_loop
->next_block
);
3409 set_basicblock_name(current_loop
->next_block
, "endloop", label_id
);
3413 void ac_build_ifcc(struct ac_llvm_context
*ctx
, LLVMValueRef cond
, int label_id
)
3415 struct ac_llvm_flow
*flow
= push_flow(ctx
);
3416 LLVMBasicBlockRef if_block
;
3418 if_block
= append_basic_block(ctx
, "IF");
3419 flow
->next_block
= append_basic_block(ctx
, "ELSE");
3420 set_basicblock_name(if_block
, "if", label_id
);
3421 LLVMBuildCondBr(ctx
->builder
, cond
, if_block
, flow
->next_block
);
3422 LLVMPositionBuilderAtEnd(ctx
->builder
, if_block
);
3425 void ac_build_if(struct ac_llvm_context
*ctx
, LLVMValueRef value
,
3428 LLVMValueRef cond
= LLVMBuildFCmp(ctx
->builder
, LLVMRealUNE
,
3429 value
, ctx
->f32_0
, "");
3430 ac_build_ifcc(ctx
, cond
, label_id
);
3433 void ac_build_uif(struct ac_llvm_context
*ctx
, LLVMValueRef value
,
3436 LLVMValueRef cond
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
,
3437 ac_to_integer(ctx
, value
),
3439 ac_build_ifcc(ctx
, cond
, label_id
);
3442 LLVMValueRef
ac_build_alloca_undef(struct ac_llvm_context
*ac
, LLVMTypeRef type
,
3445 LLVMBuilderRef builder
= ac
->builder
;
3446 LLVMBasicBlockRef current_block
= LLVMGetInsertBlock(builder
);
3447 LLVMValueRef function
= LLVMGetBasicBlockParent(current_block
);
3448 LLVMBasicBlockRef first_block
= LLVMGetEntryBasicBlock(function
);
3449 LLVMValueRef first_instr
= LLVMGetFirstInstruction(first_block
);
3450 LLVMBuilderRef first_builder
= LLVMCreateBuilderInContext(ac
->context
);
3454 LLVMPositionBuilderBefore(first_builder
, first_instr
);
3456 LLVMPositionBuilderAtEnd(first_builder
, first_block
);
3459 res
= LLVMBuildAlloca(first_builder
, type
, name
);
3460 LLVMDisposeBuilder(first_builder
);
3464 LLVMValueRef
ac_build_alloca(struct ac_llvm_context
*ac
,
3465 LLVMTypeRef type
, const char *name
)
3467 LLVMValueRef ptr
= ac_build_alloca_undef(ac
, type
, name
);
3468 LLVMBuildStore(ac
->builder
, LLVMConstNull(type
), ptr
);
3472 LLVMValueRef
ac_cast_ptr(struct ac_llvm_context
*ctx
, LLVMValueRef ptr
,
3475 int addr_space
= LLVMGetPointerAddressSpace(LLVMTypeOf(ptr
));
3476 return LLVMBuildBitCast(ctx
->builder
, ptr
,
3477 LLVMPointerType(type
, addr_space
), "");
3480 LLVMValueRef
ac_trim_vector(struct ac_llvm_context
*ctx
, LLVMValueRef value
,
3483 unsigned num_components
= ac_get_llvm_num_components(value
);
3484 if (count
== num_components
)
3487 LLVMValueRef masks
[MAX2(count
, 2)];
3488 masks
[0] = ctx
->i32_0
;
3489 masks
[1] = ctx
->i32_1
;
3490 for (unsigned i
= 2; i
< count
; i
++)
3491 masks
[i
] = LLVMConstInt(ctx
->i32
, i
, false);
3494 return LLVMBuildExtractElement(ctx
->builder
, value
, masks
[0],
3497 LLVMValueRef swizzle
= LLVMConstVector(masks
, count
);
3498 return LLVMBuildShuffleVector(ctx
->builder
, value
, value
, swizzle
, "");
3501 LLVMValueRef
ac_unpack_param(struct ac_llvm_context
*ctx
, LLVMValueRef param
,
3502 unsigned rshift
, unsigned bitwidth
)
3504 LLVMValueRef value
= param
;
3506 value
= LLVMBuildLShr(ctx
->builder
, value
,
3507 LLVMConstInt(ctx
->i32
, rshift
, false), "");
3509 if (rshift
+ bitwidth
< 32) {
3510 unsigned mask
= (1 << bitwidth
) - 1;
3511 value
= LLVMBuildAnd(ctx
->builder
, value
,
3512 LLVMConstInt(ctx
->i32
, mask
, false), "");
3517 /* Adjust the sample index according to FMASK.
3519 * For uncompressed MSAA surfaces, FMASK should return 0x76543210,
3520 * which is the identity mapping. Each nibble says which physical sample
3521 * should be fetched to get that sample.
3523 * For example, 0x11111100 means there are only 2 samples stored and
3524 * the second sample covers 3/4 of the pixel. When reading samples 0
3525 * and 1, return physical sample 0 (determined by the first two 0s
3526 * in FMASK), otherwise return physical sample 1.
3528 * The sample index should be adjusted as follows:
3529 * addr[sample_index] = (fmask >> (addr[sample_index] * 4)) & 0xF;
3531 void ac_apply_fmask_to_sample(struct ac_llvm_context
*ac
, LLVMValueRef fmask
,
3532 LLVMValueRef
*addr
, bool is_array_tex
)
3534 struct ac_image_args fmask_load
= {};
3535 fmask_load
.opcode
= ac_image_load
;
3536 fmask_load
.resource
= fmask
;
3537 fmask_load
.dmask
= 0xf;
3538 fmask_load
.dim
= is_array_tex
? ac_image_2darray
: ac_image_2d
;
3539 fmask_load
.attributes
= AC_FUNC_ATTR_READNONE
;
3541 fmask_load
.coords
[0] = addr
[0];
3542 fmask_load
.coords
[1] = addr
[1];
3544 fmask_load
.coords
[2] = addr
[2];
3546 LLVMValueRef fmask_value
= ac_build_image_opcode(ac
, &fmask_load
);
3547 fmask_value
= LLVMBuildExtractElement(ac
->builder
, fmask_value
,
3550 /* Apply the formula. */
3551 unsigned sample_chan
= is_array_tex
? 3 : 2;
3552 LLVMValueRef final_sample
;
3553 final_sample
= LLVMBuildMul(ac
->builder
, addr
[sample_chan
],
3554 LLVMConstInt(ac
->i32
, 4, 0), "");
3555 final_sample
= LLVMBuildLShr(ac
->builder
, fmask_value
, final_sample
, "");
3556 /* Mask the sample index by 0x7, because 0x8 means an unknown value
3557 * with EQAA, so those will map to 0. */
3558 final_sample
= LLVMBuildAnd(ac
->builder
, final_sample
,
3559 LLVMConstInt(ac
->i32
, 0x7, 0), "");
3561 /* Don't rewrite the sample index if WORD1.DATA_FORMAT of the FMASK
3562 * resource descriptor is 0 (invalid).
3565 tmp
= LLVMBuildBitCast(ac
->builder
, fmask
, ac
->v8i32
, "");
3566 tmp
= LLVMBuildExtractElement(ac
->builder
, tmp
, ac
->i32_1
, "");
3567 tmp
= LLVMBuildICmp(ac
->builder
, LLVMIntNE
, tmp
, ac
->i32_0
, "");
3569 /* Replace the MSAA sample index. */
3570 addr
[sample_chan
] = LLVMBuildSelect(ac
->builder
, tmp
, final_sample
,
3571 addr
[sample_chan
], "");
3575 _ac_build_readlane(struct ac_llvm_context
*ctx
, LLVMValueRef src
, LLVMValueRef lane
)
3577 LLVMTypeRef type
= LLVMTypeOf(src
);
3578 LLVMValueRef result
;
3580 ac_build_optimization_barrier(ctx
, &src
);
3582 src
= LLVMBuildZExt(ctx
->builder
, src
, ctx
->i32
, "");
3584 lane
= LLVMBuildZExt(ctx
->builder
, lane
, ctx
->i32
, "");
3586 result
= ac_build_intrinsic(ctx
,
3587 lane
== NULL
? "llvm.amdgcn.readfirstlane" : "llvm.amdgcn.readlane",
3588 ctx
->i32
, (LLVMValueRef
[]) { src
, lane
},
3589 lane
== NULL
? 1 : 2,
3590 AC_FUNC_ATTR_READNONE
|
3591 AC_FUNC_ATTR_CONVERGENT
);
3593 return LLVMBuildTrunc(ctx
->builder
, result
, type
, "");
3597 * Builds the "llvm.amdgcn.readlane" or "llvm.amdgcn.readfirstlane" intrinsic.
3600 * @param lane - id of the lane or NULL for the first active lane
3601 * @return value of the lane
3604 ac_build_readlane(struct ac_llvm_context
*ctx
, LLVMValueRef src
, LLVMValueRef lane
)
3606 LLVMTypeRef src_type
= LLVMTypeOf(src
);
3607 src
= ac_to_integer(ctx
, src
);
3608 unsigned bits
= LLVMGetIntTypeWidth(LLVMTypeOf(src
));
3612 assert(bits
% 32 == 0);
3613 LLVMTypeRef vec_type
= LLVMVectorType(ctx
->i32
, bits
/ 32);
3614 LLVMValueRef src_vector
=
3615 LLVMBuildBitCast(ctx
->builder
, src
, vec_type
, "");
3616 ret
= LLVMGetUndef(vec_type
);
3617 for (unsigned i
= 0; i
< bits
/ 32; i
++) {
3618 src
= LLVMBuildExtractElement(ctx
->builder
, src_vector
,
3619 LLVMConstInt(ctx
->i32
, i
, 0), "");
3620 LLVMValueRef ret_comp
= _ac_build_readlane(ctx
, src
, lane
);
3621 ret
= LLVMBuildInsertElement(ctx
->builder
, ret
, ret_comp
,
3622 LLVMConstInt(ctx
->i32
, i
, 0), "");
3625 ret
= _ac_build_readlane(ctx
, src
, lane
);
3628 if (LLVMGetTypeKind(src_type
) == LLVMPointerTypeKind
)
3629 return LLVMBuildIntToPtr(ctx
->builder
, ret
, src_type
, "");
3630 return LLVMBuildBitCast(ctx
->builder
, ret
, src_type
, "");
3634 ac_build_writelane(struct ac_llvm_context
*ctx
, LLVMValueRef src
, LLVMValueRef value
, LLVMValueRef lane
)
3636 return ac_build_intrinsic(ctx
, "llvm.amdgcn.writelane", ctx
->i32
,
3637 (LLVMValueRef
[]) {value
, lane
, src
}, 3,
3638 AC_FUNC_ATTR_READNONE
| AC_FUNC_ATTR_CONVERGENT
);
3642 ac_build_mbcnt(struct ac_llvm_context
*ctx
, LLVMValueRef mask
)
3644 if (ctx
->wave_size
== 32) {
3645 return ac_build_intrinsic(ctx
, "llvm.amdgcn.mbcnt.lo", ctx
->i32
,
3646 (LLVMValueRef
[]) { mask
, ctx
->i32_0
},
3647 2, AC_FUNC_ATTR_READNONE
);
3649 LLVMValueRef mask_vec
= LLVMBuildBitCast(ctx
->builder
, mask
,
3650 LLVMVectorType(ctx
->i32
, 2),
3652 LLVMValueRef mask_lo
= LLVMBuildExtractElement(ctx
->builder
, mask_vec
,
3654 LLVMValueRef mask_hi
= LLVMBuildExtractElement(ctx
->builder
, mask_vec
,
3657 ac_build_intrinsic(ctx
, "llvm.amdgcn.mbcnt.lo", ctx
->i32
,
3658 (LLVMValueRef
[]) { mask_lo
, ctx
->i32_0
},
3659 2, AC_FUNC_ATTR_READNONE
);
3660 val
= ac_build_intrinsic(ctx
, "llvm.amdgcn.mbcnt.hi", ctx
->i32
,
3661 (LLVMValueRef
[]) { mask_hi
, val
},
3662 2, AC_FUNC_ATTR_READNONE
);
3667 _dpp_quad_perm
= 0x000,
3668 _dpp_row_sl
= 0x100,
3669 _dpp_row_sr
= 0x110,
3670 _dpp_row_rr
= 0x120,
3675 dpp_row_mirror
= 0x140,
3676 dpp_row_half_mirror
= 0x141,
3677 dpp_row_bcast15
= 0x142,
3678 dpp_row_bcast31
= 0x143
3681 static inline enum dpp_ctrl
3682 dpp_quad_perm(unsigned lane0
, unsigned lane1
, unsigned lane2
, unsigned lane3
)
3684 assert(lane0
< 4 && lane1
< 4 && lane2
< 4 && lane3
< 4);
3685 return _dpp_quad_perm
| lane0
| (lane1
<< 2) | (lane2
<< 4) | (lane3
<< 6);
3688 static inline enum dpp_ctrl
3689 dpp_row_sl(unsigned amount
)
3691 assert(amount
> 0 && amount
< 16);
3692 return _dpp_row_sl
| amount
;
3695 static inline enum dpp_ctrl
3696 dpp_row_sr(unsigned amount
)
3698 assert(amount
> 0 && amount
< 16);
3699 return _dpp_row_sr
| amount
;
3703 _ac_build_dpp(struct ac_llvm_context
*ctx
, LLVMValueRef old
, LLVMValueRef src
,
3704 enum dpp_ctrl dpp_ctrl
, unsigned row_mask
, unsigned bank_mask
,
3707 LLVMTypeRef type
= LLVMTypeOf(src
);
3710 old
= LLVMBuildZExt(ctx
->builder
, old
, ctx
->i32
, "");
3711 src
= LLVMBuildZExt(ctx
->builder
, src
, ctx
->i32
, "");
3713 res
= ac_build_intrinsic(ctx
, "llvm.amdgcn.update.dpp.i32", ctx
->i32
,
3716 LLVMConstInt(ctx
->i32
, dpp_ctrl
, 0),
3717 LLVMConstInt(ctx
->i32
, row_mask
, 0),
3718 LLVMConstInt(ctx
->i32
, bank_mask
, 0),
3719 LLVMConstInt(ctx
->i1
, bound_ctrl
, 0) },
3720 6, AC_FUNC_ATTR_READNONE
| AC_FUNC_ATTR_CONVERGENT
);
3722 return LLVMBuildTrunc(ctx
->builder
, res
, type
, "");
3726 ac_build_dpp(struct ac_llvm_context
*ctx
, LLVMValueRef old
, LLVMValueRef src
,
3727 enum dpp_ctrl dpp_ctrl
, unsigned row_mask
, unsigned bank_mask
,
3730 LLVMTypeRef src_type
= LLVMTypeOf(src
);
3731 src
= ac_to_integer(ctx
, src
);
3732 old
= ac_to_integer(ctx
, old
);
3733 unsigned bits
= LLVMGetIntTypeWidth(LLVMTypeOf(src
));
3736 assert(bits
% 32 == 0);
3737 LLVMTypeRef vec_type
= LLVMVectorType(ctx
->i32
, bits
/ 32);
3738 LLVMValueRef src_vector
=
3739 LLVMBuildBitCast(ctx
->builder
, src
, vec_type
, "");
3740 LLVMValueRef old_vector
=
3741 LLVMBuildBitCast(ctx
->builder
, old
, vec_type
, "");
3742 ret
= LLVMGetUndef(vec_type
);
3743 for (unsigned i
= 0; i
< bits
/ 32; i
++) {
3744 src
= LLVMBuildExtractElement(ctx
->builder
, src_vector
,
3745 LLVMConstInt(ctx
->i32
, i
,
3747 old
= LLVMBuildExtractElement(ctx
->builder
, old_vector
,
3748 LLVMConstInt(ctx
->i32
, i
,
3750 LLVMValueRef ret_comp
= _ac_build_dpp(ctx
, old
, src
,
3755 ret
= LLVMBuildInsertElement(ctx
->builder
, ret
,
3757 LLVMConstInt(ctx
->i32
, i
,
3761 ret
= _ac_build_dpp(ctx
, old
, src
, dpp_ctrl
, row_mask
,
3762 bank_mask
, bound_ctrl
);
3764 return LLVMBuildBitCast(ctx
->builder
, ret
, src_type
, "");
3768 _ac_build_permlane16(struct ac_llvm_context
*ctx
, LLVMValueRef src
, uint64_t sel
,
3769 bool exchange_rows
, bool bound_ctrl
)
3771 LLVMTypeRef type
= LLVMTypeOf(src
);
3772 LLVMValueRef result
;
3774 src
= LLVMBuildZExt(ctx
->builder
, src
, ctx
->i32
, "");
3776 LLVMValueRef args
[6] = {
3779 LLVMConstInt(ctx
->i32
, sel
, false),
3780 LLVMConstInt(ctx
->i32
, sel
>> 32, false),
3781 ctx
->i1true
, /* fi */
3782 bound_ctrl
? ctx
->i1true
: ctx
->i1false
,
3785 result
= ac_build_intrinsic(ctx
, exchange_rows
? "llvm.amdgcn.permlanex16"
3786 : "llvm.amdgcn.permlane16",
3788 AC_FUNC_ATTR_READNONE
| AC_FUNC_ATTR_CONVERGENT
);
3790 return LLVMBuildTrunc(ctx
->builder
, result
, type
, "");
3794 ac_build_permlane16(struct ac_llvm_context
*ctx
, LLVMValueRef src
, uint64_t sel
,
3795 bool exchange_rows
, bool bound_ctrl
)
3797 LLVMTypeRef src_type
= LLVMTypeOf(src
);
3798 src
= ac_to_integer(ctx
, src
);
3799 unsigned bits
= LLVMGetIntTypeWidth(LLVMTypeOf(src
));
3802 assert(bits
% 32 == 0);
3803 LLVMTypeRef vec_type
= LLVMVectorType(ctx
->i32
, bits
/ 32);
3804 LLVMValueRef src_vector
=
3805 LLVMBuildBitCast(ctx
->builder
, src
, vec_type
, "");
3806 ret
= LLVMGetUndef(vec_type
);
3807 for (unsigned i
= 0; i
< bits
/ 32; i
++) {
3808 src
= LLVMBuildExtractElement(ctx
->builder
, src_vector
,
3809 LLVMConstInt(ctx
->i32
, i
,
3811 LLVMValueRef ret_comp
=
3812 _ac_build_permlane16(ctx
, src
, sel
,
3815 ret
= LLVMBuildInsertElement(ctx
->builder
, ret
,
3817 LLVMConstInt(ctx
->i32
, i
,
3821 ret
= _ac_build_permlane16(ctx
, src
, sel
, exchange_rows
,
3824 return LLVMBuildBitCast(ctx
->builder
, ret
, src_type
, "");
3827 static inline unsigned
3828 ds_pattern_bitmode(unsigned and_mask
, unsigned or_mask
, unsigned xor_mask
)
3830 assert(and_mask
< 32 && or_mask
< 32 && xor_mask
< 32);
3831 return and_mask
| (or_mask
<< 5) | (xor_mask
<< 10);
3835 _ac_build_ds_swizzle(struct ac_llvm_context
*ctx
, LLVMValueRef src
, unsigned mask
)
3837 LLVMTypeRef src_type
= LLVMTypeOf(src
);
3840 src
= LLVMBuildZExt(ctx
->builder
, src
, ctx
->i32
, "");
3842 ret
= ac_build_intrinsic(ctx
, "llvm.amdgcn.ds.swizzle", ctx
->i32
,
3844 src
, LLVMConstInt(ctx
->i32
, mask
, 0) },
3845 2, AC_FUNC_ATTR_READNONE
| AC_FUNC_ATTR_CONVERGENT
);
3847 return LLVMBuildTrunc(ctx
->builder
, ret
, src_type
, "");
3851 ac_build_ds_swizzle(struct ac_llvm_context
*ctx
, LLVMValueRef src
, unsigned mask
)
3853 LLVMTypeRef src_type
= LLVMTypeOf(src
);
3854 src
= ac_to_integer(ctx
, src
);
3855 unsigned bits
= LLVMGetIntTypeWidth(LLVMTypeOf(src
));
3858 assert(bits
% 32 == 0);
3859 LLVMTypeRef vec_type
= LLVMVectorType(ctx
->i32
, bits
/ 32);
3860 LLVMValueRef src_vector
=
3861 LLVMBuildBitCast(ctx
->builder
, src
, vec_type
, "");
3862 ret
= LLVMGetUndef(vec_type
);
3863 for (unsigned i
= 0; i
< bits
/ 32; i
++) {
3864 src
= LLVMBuildExtractElement(ctx
->builder
, src_vector
,
3865 LLVMConstInt(ctx
->i32
, i
,
3867 LLVMValueRef ret_comp
= _ac_build_ds_swizzle(ctx
, src
,
3869 ret
= LLVMBuildInsertElement(ctx
->builder
, ret
,
3871 LLVMConstInt(ctx
->i32
, i
,
3875 ret
= _ac_build_ds_swizzle(ctx
, src
, mask
);
3877 return LLVMBuildBitCast(ctx
->builder
, ret
, src_type
, "");
3881 ac_build_wwm(struct ac_llvm_context
*ctx
, LLVMValueRef src
)
3883 LLVMTypeRef src_type
= LLVMTypeOf(src
);
3884 unsigned bitsize
= ac_get_elem_bits(ctx
, src_type
);
3885 char name
[32], type
[8];
3888 src
= ac_to_integer(ctx
, src
);
3891 src
= LLVMBuildZExt(ctx
->builder
, src
, ctx
->i32
, "");
3893 ac_build_type_name_for_intr(LLVMTypeOf(src
), type
, sizeof(type
));
3894 snprintf(name
, sizeof(name
), "llvm.amdgcn.wwm.%s", type
);
3895 ret
= ac_build_intrinsic(ctx
, name
, LLVMTypeOf(src
),
3896 (LLVMValueRef
[]) { src
}, 1,
3897 AC_FUNC_ATTR_READNONE
);
3900 ret
= LLVMBuildTrunc(ctx
->builder
, ret
,
3901 ac_to_integer_type(ctx
, src_type
), "");
3903 return LLVMBuildBitCast(ctx
->builder
, ret
, src_type
, "");
3907 ac_build_set_inactive(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
3908 LLVMValueRef inactive
)
3910 char name
[33], type
[8];
3911 LLVMTypeRef src_type
= LLVMTypeOf(src
);
3912 unsigned bitsize
= ac_get_elem_bits(ctx
, src_type
);
3913 src
= ac_to_integer(ctx
, src
);
3914 inactive
= ac_to_integer(ctx
, inactive
);
3917 src
= LLVMBuildZExt(ctx
->builder
, src
, ctx
->i32
, "");
3918 inactive
= LLVMBuildZExt(ctx
->builder
, inactive
, ctx
->i32
, "");
3921 ac_build_type_name_for_intr(LLVMTypeOf(src
), type
, sizeof(type
));
3922 snprintf(name
, sizeof(name
), "llvm.amdgcn.set.inactive.%s", type
);
3924 ac_build_intrinsic(ctx
, name
,
3925 LLVMTypeOf(src
), (LLVMValueRef
[]) {
3927 AC_FUNC_ATTR_READNONE
|
3928 AC_FUNC_ATTR_CONVERGENT
);
3930 ret
= LLVMBuildTrunc(ctx
->builder
, ret
, src_type
, "");
3936 get_reduction_identity(struct ac_llvm_context
*ctx
, nir_op op
, unsigned type_size
)
3938 if (type_size
== 1) {
3940 case nir_op_iadd
: return ctx
->i8_0
;
3941 case nir_op_imul
: return ctx
->i8_1
;
3942 case nir_op_imin
: return LLVMConstInt(ctx
->i8
, INT8_MAX
, 0);
3943 case nir_op_umin
: return LLVMConstInt(ctx
->i8
, UINT8_MAX
, 0);
3944 case nir_op_imax
: return LLVMConstInt(ctx
->i8
, INT8_MIN
, 0);
3945 case nir_op_umax
: return ctx
->i8_0
;
3946 case nir_op_iand
: return LLVMConstInt(ctx
->i8
, -1, 0);
3947 case nir_op_ior
: return ctx
->i8_0
;
3948 case nir_op_ixor
: return ctx
->i8_0
;
3950 unreachable("bad reduction intrinsic");
3952 } else if (type_size
== 2) {
3954 case nir_op_iadd
: return ctx
->i16_0
;
3955 case nir_op_fadd
: return ctx
->f16_0
;
3956 case nir_op_imul
: return ctx
->i16_1
;
3957 case nir_op_fmul
: return ctx
->f16_1
;
3958 case nir_op_imin
: return LLVMConstInt(ctx
->i16
, INT16_MAX
, 0);
3959 case nir_op_umin
: return LLVMConstInt(ctx
->i16
, UINT16_MAX
, 0);
3960 case nir_op_fmin
: return LLVMConstReal(ctx
->f16
, INFINITY
);
3961 case nir_op_imax
: return LLVMConstInt(ctx
->i16
, INT16_MIN
, 0);
3962 case nir_op_umax
: return ctx
->i16_0
;
3963 case nir_op_fmax
: return LLVMConstReal(ctx
->f16
, -INFINITY
);
3964 case nir_op_iand
: return LLVMConstInt(ctx
->i16
, -1, 0);
3965 case nir_op_ior
: return ctx
->i16_0
;
3966 case nir_op_ixor
: return ctx
->i16_0
;
3968 unreachable("bad reduction intrinsic");
3970 } else if (type_size
== 4) {
3972 case nir_op_iadd
: return ctx
->i32_0
;
3973 case nir_op_fadd
: return ctx
->f32_0
;
3974 case nir_op_imul
: return ctx
->i32_1
;
3975 case nir_op_fmul
: return ctx
->f32_1
;
3976 case nir_op_imin
: return LLVMConstInt(ctx
->i32
, INT32_MAX
, 0);
3977 case nir_op_umin
: return LLVMConstInt(ctx
->i32
, UINT32_MAX
, 0);
3978 case nir_op_fmin
: return LLVMConstReal(ctx
->f32
, INFINITY
);
3979 case nir_op_imax
: return LLVMConstInt(ctx
->i32
, INT32_MIN
, 0);
3980 case nir_op_umax
: return ctx
->i32_0
;
3981 case nir_op_fmax
: return LLVMConstReal(ctx
->f32
, -INFINITY
);
3982 case nir_op_iand
: return LLVMConstInt(ctx
->i32
, -1, 0);
3983 case nir_op_ior
: return ctx
->i32_0
;
3984 case nir_op_ixor
: return ctx
->i32_0
;
3986 unreachable("bad reduction intrinsic");
3988 } else { /* type_size == 64bit */
3990 case nir_op_iadd
: return ctx
->i64_0
;
3991 case nir_op_fadd
: return ctx
->f64_0
;
3992 case nir_op_imul
: return ctx
->i64_1
;
3993 case nir_op_fmul
: return ctx
->f64_1
;
3994 case nir_op_imin
: return LLVMConstInt(ctx
->i64
, INT64_MAX
, 0);
3995 case nir_op_umin
: return LLVMConstInt(ctx
->i64
, UINT64_MAX
, 0);
3996 case nir_op_fmin
: return LLVMConstReal(ctx
->f64
, INFINITY
);
3997 case nir_op_imax
: return LLVMConstInt(ctx
->i64
, INT64_MIN
, 0);
3998 case nir_op_umax
: return ctx
->i64_0
;
3999 case nir_op_fmax
: return LLVMConstReal(ctx
->f64
, -INFINITY
);
4000 case nir_op_iand
: return LLVMConstInt(ctx
->i64
, -1, 0);
4001 case nir_op_ior
: return ctx
->i64_0
;
4002 case nir_op_ixor
: return ctx
->i64_0
;
4004 unreachable("bad reduction intrinsic");
4010 ac_build_alu_op(struct ac_llvm_context
*ctx
, LLVMValueRef lhs
, LLVMValueRef rhs
, nir_op op
)
4012 bool _64bit
= ac_get_type_size(LLVMTypeOf(lhs
)) == 8;
4013 bool _32bit
= ac_get_type_size(LLVMTypeOf(lhs
)) == 4;
4015 case nir_op_iadd
: return LLVMBuildAdd(ctx
->builder
, lhs
, rhs
, "");
4016 case nir_op_fadd
: return LLVMBuildFAdd(ctx
->builder
, lhs
, rhs
, "");
4017 case nir_op_imul
: return LLVMBuildMul(ctx
->builder
, lhs
, rhs
, "");
4018 case nir_op_fmul
: return LLVMBuildFMul(ctx
->builder
, lhs
, rhs
, "");
4019 case nir_op_imin
: return LLVMBuildSelect(ctx
->builder
,
4020 LLVMBuildICmp(ctx
->builder
, LLVMIntSLT
, lhs
, rhs
, ""),
4022 case nir_op_umin
: return LLVMBuildSelect(ctx
->builder
,
4023 LLVMBuildICmp(ctx
->builder
, LLVMIntULT
, lhs
, rhs
, ""),
4025 case nir_op_fmin
: return ac_build_intrinsic(ctx
,
4026 _64bit
? "llvm.minnum.f64" : _32bit
? "llvm.minnum.f32" : "llvm.minnum.f16",
4027 _64bit
? ctx
->f64
: _32bit
? ctx
->f32
: ctx
->f16
,
4028 (LLVMValueRef
[]){lhs
, rhs
}, 2, AC_FUNC_ATTR_READNONE
);
4029 case nir_op_imax
: return LLVMBuildSelect(ctx
->builder
,
4030 LLVMBuildICmp(ctx
->builder
, LLVMIntSGT
, lhs
, rhs
, ""),
4032 case nir_op_umax
: return LLVMBuildSelect(ctx
->builder
,
4033 LLVMBuildICmp(ctx
->builder
, LLVMIntUGT
, lhs
, rhs
, ""),
4035 case nir_op_fmax
: return ac_build_intrinsic(ctx
,
4036 _64bit
? "llvm.maxnum.f64" : _32bit
? "llvm.maxnum.f32" : "llvm.maxnum.f16",
4037 _64bit
? ctx
->f64
: _32bit
? ctx
->f32
: ctx
->f16
,
4038 (LLVMValueRef
[]){lhs
, rhs
}, 2, AC_FUNC_ATTR_READNONE
);
4039 case nir_op_iand
: return LLVMBuildAnd(ctx
->builder
, lhs
, rhs
, "");
4040 case nir_op_ior
: return LLVMBuildOr(ctx
->builder
, lhs
, rhs
, "");
4041 case nir_op_ixor
: return LLVMBuildXor(ctx
->builder
, lhs
, rhs
, "");
4043 unreachable("bad reduction intrinsic");
4048 * \param src The value to shift.
4049 * \param identity The value to use the first lane.
4050 * \param maxprefix specifies that the result only needs to be correct for a
4051 * prefix of this many threads
4052 * \return src, shifted 1 lane up, and identity shifted into lane 0.
4055 ac_wavefront_shift_right_1(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
4056 LLVMValueRef identity
, unsigned maxprefix
)
4058 if (ctx
->chip_class
>= GFX10
) {
4059 /* wavefront shift_right by 1 on GFX10 (emulate dpp_wf_sr1) */
4060 LLVMValueRef active
, tmp1
, tmp2
;
4061 LLVMValueRef tid
= ac_get_thread_id(ctx
);
4063 tmp1
= ac_build_dpp(ctx
, identity
, src
, dpp_row_sr(1), 0xf, 0xf, false);
4065 tmp2
= ac_build_permlane16(ctx
, src
, (uint64_t)~0, true, false);
4067 if (maxprefix
> 32) {
4068 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, tid
,
4069 LLVMConstInt(ctx
->i32
, 32, false), "");
4071 tmp2
= LLVMBuildSelect(ctx
->builder
, active
,
4072 ac_build_readlane(ctx
, src
,
4073 LLVMConstInt(ctx
->i32
, 31, false)),
4076 active
= LLVMBuildOr(ctx
->builder
, active
,
4077 LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
,
4078 LLVMBuildAnd(ctx
->builder
, tid
,
4079 LLVMConstInt(ctx
->i32
, 0x1f, false), ""),
4080 LLVMConstInt(ctx
->i32
, 0x10, false), ""), "");
4081 return LLVMBuildSelect(ctx
->builder
, active
, tmp2
, tmp1
, "");
4082 } else if (maxprefix
> 16) {
4083 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, tid
,
4084 LLVMConstInt(ctx
->i32
, 16, false), "");
4086 return LLVMBuildSelect(ctx
->builder
, active
, tmp2
, tmp1
, "");
4088 } else if (ctx
->chip_class
>= GFX8
) {
4089 return ac_build_dpp(ctx
, identity
, src
, dpp_wf_sr1
, 0xf, 0xf, false);
4092 /* wavefront shift_right by 1 on SI/CI */
4093 LLVMValueRef active
, tmp1
, tmp2
;
4094 LLVMValueRef tid
= ac_get_thread_id(ctx
);
4095 tmp1
= ac_build_ds_swizzle(ctx
, src
, (1 << 15) | dpp_quad_perm(0, 0, 1, 2));
4096 tmp2
= ac_build_ds_swizzle(ctx
, src
, ds_pattern_bitmode(0x18, 0x03, 0x00));
4097 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
,
4098 LLVMBuildAnd(ctx
->builder
, tid
, LLVMConstInt(ctx
->i32
, 0x7, 0), ""),
4099 LLVMConstInt(ctx
->i32
, 0x4, 0), "");
4100 tmp1
= LLVMBuildSelect(ctx
->builder
, active
, tmp2
, tmp1
, "");
4101 tmp2
= ac_build_ds_swizzle(ctx
, src
, ds_pattern_bitmode(0x10, 0x07, 0x00));
4102 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
,
4103 LLVMBuildAnd(ctx
->builder
, tid
, LLVMConstInt(ctx
->i32
, 0xf, 0), ""),
4104 LLVMConstInt(ctx
->i32
, 0x8, 0), "");
4105 tmp1
= LLVMBuildSelect(ctx
->builder
, active
, tmp2
, tmp1
, "");
4106 tmp2
= ac_build_ds_swizzle(ctx
, src
, ds_pattern_bitmode(0x00, 0x0f, 0x00));
4107 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
,
4108 LLVMBuildAnd(ctx
->builder
, tid
, LLVMConstInt(ctx
->i32
, 0x1f, 0), ""),
4109 LLVMConstInt(ctx
->i32
, 0x10, 0), "");
4110 tmp1
= LLVMBuildSelect(ctx
->builder
, active
, tmp2
, tmp1
, "");
4111 tmp2
= ac_build_readlane(ctx
, src
, LLVMConstInt(ctx
->i32
, 31, 0));
4112 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, tid
, LLVMConstInt(ctx
->i32
, 32, 0), "");
4113 tmp1
= LLVMBuildSelect(ctx
->builder
, active
, tmp2
, tmp1
, "");
4114 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntEQ
, tid
, LLVMConstInt(ctx
->i32
, 0, 0), "");
4115 return LLVMBuildSelect(ctx
->builder
, active
, identity
, tmp1
, "");
4119 * \param maxprefix specifies that the result only needs to be correct for a
4120 * prefix of this many threads
4123 ac_build_scan(struct ac_llvm_context
*ctx
, nir_op op
, LLVMValueRef src
, LLVMValueRef identity
,
4124 unsigned maxprefix
, bool inclusive
)
4126 LLVMValueRef result
, tmp
;
4129 src
= ac_wavefront_shift_right_1(ctx
, src
, identity
, maxprefix
);
4133 if (ctx
->chip_class
<= GFX7
) {
4134 assert(maxprefix
== 64);
4135 LLVMValueRef tid
= ac_get_thread_id(ctx
);
4136 LLVMValueRef active
;
4137 tmp
= ac_build_ds_swizzle(ctx
, src
, ds_pattern_bitmode(0x1e, 0x00, 0x00));
4138 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
,
4139 LLVMBuildAnd(ctx
->builder
, tid
, ctx
->i32_1
, ""),
4141 tmp
= LLVMBuildSelect(ctx
->builder
, active
, tmp
, identity
, "");
4142 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4143 tmp
= ac_build_ds_swizzle(ctx
, result
, ds_pattern_bitmode(0x1c, 0x01, 0x00));
4144 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
,
4145 LLVMBuildAnd(ctx
->builder
, tid
, LLVMConstInt(ctx
->i32
, 2, 0), ""),
4147 tmp
= LLVMBuildSelect(ctx
->builder
, active
, tmp
, identity
, "");
4148 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4149 tmp
= ac_build_ds_swizzle(ctx
, result
, ds_pattern_bitmode(0x18, 0x03, 0x00));
4150 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
,
4151 LLVMBuildAnd(ctx
->builder
, tid
, LLVMConstInt(ctx
->i32
, 4, 0), ""),
4153 tmp
= LLVMBuildSelect(ctx
->builder
, active
, tmp
, identity
, "");
4154 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4155 tmp
= ac_build_ds_swizzle(ctx
, result
, ds_pattern_bitmode(0x10, 0x07, 0x00));
4156 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
,
4157 LLVMBuildAnd(ctx
->builder
, tid
, LLVMConstInt(ctx
->i32
, 8, 0), ""),
4159 tmp
= LLVMBuildSelect(ctx
->builder
, active
, tmp
, identity
, "");
4160 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4161 tmp
= ac_build_ds_swizzle(ctx
, result
, ds_pattern_bitmode(0x00, 0x0f, 0x00));
4162 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
,
4163 LLVMBuildAnd(ctx
->builder
, tid
, LLVMConstInt(ctx
->i32
, 16, 0), ""),
4165 tmp
= LLVMBuildSelect(ctx
->builder
, active
, tmp
, identity
, "");
4166 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4167 tmp
= ac_build_readlane(ctx
, result
, LLVMConstInt(ctx
->i32
, 31, 0));
4168 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
,
4169 LLVMBuildAnd(ctx
->builder
, tid
, LLVMConstInt(ctx
->i32
, 32, 0), ""),
4171 tmp
= LLVMBuildSelect(ctx
->builder
, active
, tmp
, identity
, "");
4172 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4178 tmp
= ac_build_dpp(ctx
, identity
, src
, dpp_row_sr(1), 0xf, 0xf, false);
4179 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4182 tmp
= ac_build_dpp(ctx
, identity
, src
, dpp_row_sr(2), 0xf, 0xf, false);
4183 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4186 tmp
= ac_build_dpp(ctx
, identity
, src
, dpp_row_sr(3), 0xf, 0xf, false);
4187 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4190 tmp
= ac_build_dpp(ctx
, identity
, result
, dpp_row_sr(4), 0xf, 0xe, false);
4191 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4194 tmp
= ac_build_dpp(ctx
, identity
, result
, dpp_row_sr(8), 0xf, 0xc, false);
4195 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4196 if (maxprefix
<= 16)
4199 if (ctx
->chip_class
>= GFX10
) {
4200 LLVMValueRef tid
= ac_get_thread_id(ctx
);
4201 LLVMValueRef active
;
4203 tmp
= ac_build_permlane16(ctx
, result
, ~(uint64_t)0, true, false);
4205 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntNE
,
4206 LLVMBuildAnd(ctx
->builder
, tid
,
4207 LLVMConstInt(ctx
->i32
, 16, false), ""),
4210 tmp
= LLVMBuildSelect(ctx
->builder
, active
, tmp
, identity
, "");
4212 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4214 if (maxprefix
<= 32)
4217 tmp
= ac_build_readlane(ctx
, result
, LLVMConstInt(ctx
->i32
, 31, false));
4219 active
= LLVMBuildICmp(ctx
->builder
, LLVMIntUGE
, tid
,
4220 LLVMConstInt(ctx
->i32
, 32, false), "");
4222 tmp
= LLVMBuildSelect(ctx
->builder
, active
, tmp
, identity
, "");
4224 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4228 tmp
= ac_build_dpp(ctx
, identity
, result
, dpp_row_bcast15
, 0xa, 0xf, false);
4229 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4230 if (maxprefix
<= 32)
4232 tmp
= ac_build_dpp(ctx
, identity
, result
, dpp_row_bcast31
, 0xc, 0xf, false);
4233 result
= ac_build_alu_op(ctx
, result
, tmp
, op
);
4238 ac_build_inclusive_scan(struct ac_llvm_context
*ctx
, LLVMValueRef src
, nir_op op
)
4240 LLVMValueRef result
;
4242 if (LLVMTypeOf(src
) == ctx
->i1
&& op
== nir_op_iadd
) {
4243 LLVMBuilderRef builder
= ctx
->builder
;
4244 src
= LLVMBuildZExt(builder
, src
, ctx
->i32
, "");
4245 result
= ac_build_ballot(ctx
, src
);
4246 result
= ac_build_mbcnt(ctx
, result
);
4247 result
= LLVMBuildAdd(builder
, result
, src
, "");
4251 ac_build_optimization_barrier(ctx
, &src
);
4253 LLVMValueRef identity
=
4254 get_reduction_identity(ctx
, op
, ac_get_type_size(LLVMTypeOf(src
)));
4255 result
= LLVMBuildBitCast(ctx
->builder
, ac_build_set_inactive(ctx
, src
, identity
),
4256 LLVMTypeOf(identity
), "");
4257 result
= ac_build_scan(ctx
, op
, result
, identity
, ctx
->wave_size
, true);
4259 return ac_build_wwm(ctx
, result
);
4263 ac_build_exclusive_scan(struct ac_llvm_context
*ctx
, LLVMValueRef src
, nir_op op
)
4265 LLVMValueRef result
;
4267 if (LLVMTypeOf(src
) == ctx
->i1
&& op
== nir_op_iadd
) {
4268 LLVMBuilderRef builder
= ctx
->builder
;
4269 src
= LLVMBuildZExt(builder
, src
, ctx
->i32
, "");
4270 result
= ac_build_ballot(ctx
, src
);
4271 result
= ac_build_mbcnt(ctx
, result
);
4275 ac_build_optimization_barrier(ctx
, &src
);
4277 LLVMValueRef identity
=
4278 get_reduction_identity(ctx
, op
, ac_get_type_size(LLVMTypeOf(src
)));
4279 result
= LLVMBuildBitCast(ctx
->builder
, ac_build_set_inactive(ctx
, src
, identity
),
4280 LLVMTypeOf(identity
), "");
4281 result
= ac_build_scan(ctx
, op
, result
, identity
, ctx
->wave_size
, false);
4283 return ac_build_wwm(ctx
, result
);
4287 ac_build_reduce(struct ac_llvm_context
*ctx
, LLVMValueRef src
, nir_op op
, unsigned cluster_size
)
4289 if (cluster_size
== 1) return src
;
4290 ac_build_optimization_barrier(ctx
, &src
);
4291 LLVMValueRef result
, swap
;
4292 LLVMValueRef identity
= get_reduction_identity(ctx
, op
,
4293 ac_get_type_size(LLVMTypeOf(src
)));
4294 result
= LLVMBuildBitCast(ctx
->builder
,
4295 ac_build_set_inactive(ctx
, src
, identity
),
4296 LLVMTypeOf(identity
), "");
4297 swap
= ac_build_quad_swizzle(ctx
, result
, 1, 0, 3, 2);
4298 result
= ac_build_alu_op(ctx
, result
, swap
, op
);
4299 if (cluster_size
== 2) return ac_build_wwm(ctx
, result
);
4301 swap
= ac_build_quad_swizzle(ctx
, result
, 2, 3, 0, 1);
4302 result
= ac_build_alu_op(ctx
, result
, swap
, op
);
4303 if (cluster_size
== 4) return ac_build_wwm(ctx
, result
);
4305 if (ctx
->chip_class
>= GFX8
)
4306 swap
= ac_build_dpp(ctx
, identity
, result
, dpp_row_half_mirror
, 0xf, 0xf, false);
4308 swap
= ac_build_ds_swizzle(ctx
, result
, ds_pattern_bitmode(0x1f, 0, 0x04));
4309 result
= ac_build_alu_op(ctx
, result
, swap
, op
);
4310 if (cluster_size
== 8) return ac_build_wwm(ctx
, result
);
4312 if (ctx
->chip_class
>= GFX8
)
4313 swap
= ac_build_dpp(ctx
, identity
, result
, dpp_row_mirror
, 0xf, 0xf, false);
4315 swap
= ac_build_ds_swizzle(ctx
, result
, ds_pattern_bitmode(0x1f, 0, 0x08));
4316 result
= ac_build_alu_op(ctx
, result
, swap
, op
);
4317 if (cluster_size
== 16) return ac_build_wwm(ctx
, result
);
4319 if (ctx
->chip_class
>= GFX10
)
4320 swap
= ac_build_permlane16(ctx
, result
, 0, true, false);
4321 else if (ctx
->chip_class
>= GFX8
&& cluster_size
!= 32)
4322 swap
= ac_build_dpp(ctx
, identity
, result
, dpp_row_bcast15
, 0xa, 0xf, false);
4324 swap
= ac_build_ds_swizzle(ctx
, result
, ds_pattern_bitmode(0x1f, 0, 0x10));
4325 result
= ac_build_alu_op(ctx
, result
, swap
, op
);
4326 if (cluster_size
== 32) return ac_build_wwm(ctx
, result
);
4328 if (ctx
->chip_class
>= GFX8
) {
4329 if (ctx
->chip_class
>= GFX10
)
4330 swap
= ac_build_readlane(ctx
, result
, LLVMConstInt(ctx
->i32
, 31, false));
4332 swap
= ac_build_dpp(ctx
, identity
, result
, dpp_row_bcast31
, 0xc, 0xf, false);
4333 result
= ac_build_alu_op(ctx
, result
, swap
, op
);
4334 result
= ac_build_readlane(ctx
, result
, LLVMConstInt(ctx
->i32
, 63, 0));
4335 return ac_build_wwm(ctx
, result
);
4337 swap
= ac_build_readlane(ctx
, result
, ctx
->i32_0
);
4338 result
= ac_build_readlane(ctx
, result
, LLVMConstInt(ctx
->i32
, 32, 0));
4339 result
= ac_build_alu_op(ctx
, result
, swap
, op
);
4340 return ac_build_wwm(ctx
, result
);
4345 * "Top half" of a scan that reduces per-wave values across an entire
4348 * The source value must be present in the highest lane of the wave, and the
4349 * highest lane must be live.
4352 ac_build_wg_wavescan_top(struct ac_llvm_context
*ctx
, struct ac_wg_scan
*ws
)
4354 if (ws
->maxwaves
<= 1)
4357 const LLVMValueRef last_lane
= LLVMConstInt(ctx
->i32
, ctx
->wave_size
- 1, false);
4358 LLVMBuilderRef builder
= ctx
->builder
;
4359 LLVMValueRef tid
= ac_get_thread_id(ctx
);
4362 tmp
= LLVMBuildICmp(builder
, LLVMIntEQ
, tid
, last_lane
, "");
4363 ac_build_ifcc(ctx
, tmp
, 1000);
4364 LLVMBuildStore(builder
, ws
->src
, LLVMBuildGEP(builder
, ws
->scratch
, &ws
->waveidx
, 1, ""));
4365 ac_build_endif(ctx
, 1000);
4369 * "Bottom half" of a scan that reduces per-wave values across an entire
4372 * The caller must place a barrier between the top and bottom halves.
4375 ac_build_wg_wavescan_bottom(struct ac_llvm_context
*ctx
, struct ac_wg_scan
*ws
)
4377 const LLVMTypeRef type
= LLVMTypeOf(ws
->src
);
4378 const LLVMValueRef identity
=
4379 get_reduction_identity(ctx
, ws
->op
, ac_get_type_size(type
));
4381 if (ws
->maxwaves
<= 1) {
4382 ws
->result_reduce
= ws
->src
;
4383 ws
->result_inclusive
= ws
->src
;
4384 ws
->result_exclusive
= identity
;
4387 assert(ws
->maxwaves
<= 32);
4389 LLVMBuilderRef builder
= ctx
->builder
;
4390 LLVMValueRef tid
= ac_get_thread_id(ctx
);
4391 LLVMBasicBlockRef bbs
[2];
4392 LLVMValueRef phivalues_scan
[2];
4393 LLVMValueRef tmp
, tmp2
;
4395 bbs
[0] = LLVMGetInsertBlock(builder
);
4396 phivalues_scan
[0] = LLVMGetUndef(type
);
4398 if (ws
->enable_reduce
)
4399 tmp
= LLVMBuildICmp(builder
, LLVMIntULT
, tid
, ws
->numwaves
, "");
4400 else if (ws
->enable_inclusive
)
4401 tmp
= LLVMBuildICmp(builder
, LLVMIntULE
, tid
, ws
->waveidx
, "");
4403 tmp
= LLVMBuildICmp(builder
, LLVMIntULT
, tid
, ws
->waveidx
, "");
4404 ac_build_ifcc(ctx
, tmp
, 1001);
4406 tmp
= LLVMBuildLoad(builder
, LLVMBuildGEP(builder
, ws
->scratch
, &tid
, 1, ""), "");
4408 ac_build_optimization_barrier(ctx
, &tmp
);
4410 bbs
[1] = LLVMGetInsertBlock(builder
);
4411 phivalues_scan
[1] = ac_build_scan(ctx
, ws
->op
, tmp
, identity
, ws
->maxwaves
, true);
4413 ac_build_endif(ctx
, 1001);
4415 const LLVMValueRef scan
= ac_build_phi(ctx
, type
, 2, phivalues_scan
, bbs
);
4417 if (ws
->enable_reduce
) {
4418 tmp
= LLVMBuildSub(builder
, ws
->numwaves
, ctx
->i32_1
, "");
4419 ws
->result_reduce
= ac_build_readlane(ctx
, scan
, tmp
);
4421 if (ws
->enable_inclusive
)
4422 ws
->result_inclusive
= ac_build_readlane(ctx
, scan
, ws
->waveidx
);
4423 if (ws
->enable_exclusive
) {
4424 tmp
= LLVMBuildSub(builder
, ws
->waveidx
, ctx
->i32_1
, "");
4425 tmp
= ac_build_readlane(ctx
, scan
, tmp
);
4426 tmp2
= LLVMBuildICmp(builder
, LLVMIntEQ
, ws
->waveidx
, ctx
->i32_0
, "");
4427 ws
->result_exclusive
= LLVMBuildSelect(builder
, tmp2
, identity
, tmp
, "");
4432 * Inclusive scan of a per-wave value across an entire workgroup.
4434 * This implies an s_barrier instruction.
4436 * Unlike ac_build_inclusive_scan, the caller \em must ensure that all threads
4437 * of the workgroup are live. (This requirement cannot easily be relaxed in a
4438 * useful manner because of the barrier in the algorithm.)
4441 ac_build_wg_wavescan(struct ac_llvm_context
*ctx
, struct ac_wg_scan
*ws
)
4443 ac_build_wg_wavescan_top(ctx
, ws
);
4444 ac_build_s_barrier(ctx
);
4445 ac_build_wg_wavescan_bottom(ctx
, ws
);
4449 * "Top half" of a scan that reduces per-thread values across an entire
4452 * All lanes must be active when this code runs.
4455 ac_build_wg_scan_top(struct ac_llvm_context
*ctx
, struct ac_wg_scan
*ws
)
4457 if (ws
->enable_exclusive
) {
4458 ws
->extra
= ac_build_exclusive_scan(ctx
, ws
->src
, ws
->op
);
4459 if (LLVMTypeOf(ws
->src
) == ctx
->i1
&& ws
->op
== nir_op_iadd
)
4460 ws
->src
= LLVMBuildZExt(ctx
->builder
, ws
->src
, ctx
->i32
, "");
4461 ws
->src
= ac_build_alu_op(ctx
, ws
->extra
, ws
->src
, ws
->op
);
4463 ws
->src
= ac_build_inclusive_scan(ctx
, ws
->src
, ws
->op
);
4466 bool enable_inclusive
= ws
->enable_inclusive
;
4467 bool enable_exclusive
= ws
->enable_exclusive
;
4468 ws
->enable_inclusive
= false;
4469 ws
->enable_exclusive
= ws
->enable_exclusive
|| enable_inclusive
;
4470 ac_build_wg_wavescan_top(ctx
, ws
);
4471 ws
->enable_inclusive
= enable_inclusive
;
4472 ws
->enable_exclusive
= enable_exclusive
;
4476 * "Bottom half" of a scan that reduces per-thread values across an entire
4479 * The caller must place a barrier between the top and bottom halves.
4482 ac_build_wg_scan_bottom(struct ac_llvm_context
*ctx
, struct ac_wg_scan
*ws
)
4484 bool enable_inclusive
= ws
->enable_inclusive
;
4485 bool enable_exclusive
= ws
->enable_exclusive
;
4486 ws
->enable_inclusive
= false;
4487 ws
->enable_exclusive
= ws
->enable_exclusive
|| enable_inclusive
;
4488 ac_build_wg_wavescan_bottom(ctx
, ws
);
4489 ws
->enable_inclusive
= enable_inclusive
;
4490 ws
->enable_exclusive
= enable_exclusive
;
4492 /* ws->result_reduce is already the correct value */
4493 if (ws
->enable_inclusive
)
4494 ws
->result_inclusive
= ac_build_alu_op(ctx
, ws
->result_inclusive
, ws
->src
, ws
->op
);
4495 if (ws
->enable_exclusive
)
4496 ws
->result_exclusive
= ac_build_alu_op(ctx
, ws
->result_exclusive
, ws
->extra
, ws
->op
);
4500 * A scan that reduces per-thread values across an entire workgroup.
4502 * The caller must ensure that all lanes are active when this code runs
4503 * (WWM is insufficient!), because there is an implied barrier.
4506 ac_build_wg_scan(struct ac_llvm_context
*ctx
, struct ac_wg_scan
*ws
)
4508 ac_build_wg_scan_top(ctx
, ws
);
4509 ac_build_s_barrier(ctx
);
4510 ac_build_wg_scan_bottom(ctx
, ws
);
4514 ac_build_quad_swizzle(struct ac_llvm_context
*ctx
, LLVMValueRef src
,
4515 unsigned lane0
, unsigned lane1
, unsigned lane2
, unsigned lane3
)
4517 unsigned mask
= dpp_quad_perm(lane0
, lane1
, lane2
, lane3
);
4518 if (ctx
->chip_class
>= GFX8
) {
4519 return ac_build_dpp(ctx
, src
, src
, mask
, 0xf, 0xf, false);
4521 return ac_build_ds_swizzle(ctx
, src
, (1 << 15) | mask
);
4526 ac_build_shuffle(struct ac_llvm_context
*ctx
, LLVMValueRef src
, LLVMValueRef index
)
4528 LLVMTypeRef type
= LLVMTypeOf(src
);
4529 LLVMValueRef result
;
4531 index
= LLVMBuildMul(ctx
->builder
, index
, LLVMConstInt(ctx
->i32
, 4, 0), "");
4532 src
= LLVMBuildZExt(ctx
->builder
, src
, ctx
->i32
, "");
4534 result
= ac_build_intrinsic(ctx
, "llvm.amdgcn.ds.bpermute", ctx
->i32
,
4535 (LLVMValueRef
[]) {index
, src
}, 2,
4536 AC_FUNC_ATTR_READNONE
|
4537 AC_FUNC_ATTR_CONVERGENT
);
4538 return LLVMBuildTrunc(ctx
->builder
, result
, type
, "");
4542 ac_build_frexp_exp(struct ac_llvm_context
*ctx
, LLVMValueRef src0
,
4548 if (bitsize
== 16) {
4549 intr
= "llvm.amdgcn.frexp.exp.i16.f16";
4551 } else if (bitsize
== 32) {
4552 intr
= "llvm.amdgcn.frexp.exp.i32.f32";
4555 intr
= "llvm.amdgcn.frexp.exp.i32.f64";
4559 LLVMValueRef params
[] = {
4562 return ac_build_intrinsic(ctx
, intr
, type
, params
, 1,
4563 AC_FUNC_ATTR_READNONE
);
4566 ac_build_frexp_mant(struct ac_llvm_context
*ctx
, LLVMValueRef src0
,
4572 if (bitsize
== 16) {
4573 intr
= "llvm.amdgcn.frexp.mant.f16";
4575 } else if (bitsize
== 32) {
4576 intr
= "llvm.amdgcn.frexp.mant.f32";
4579 intr
= "llvm.amdgcn.frexp.mant.f64";
4583 LLVMValueRef params
[] = {
4586 return ac_build_intrinsic(ctx
, intr
, type
, params
, 1,
4587 AC_FUNC_ATTR_READNONE
);
4591 ac_build_canonicalize(struct ac_llvm_context
*ctx
, LLVMValueRef src0
,
4597 if (bitsize
== 16) {
4598 intr
= "llvm.canonicalize.f16";
4600 } else if (bitsize
== 32) {
4601 intr
= "llvm.canonicalize.f32";
4604 intr
= "llvm.canonicalize.f64";
4608 LLVMValueRef params
[] = {
4611 return ac_build_intrinsic(ctx
, intr
, type
, params
, 1,
4612 AC_FUNC_ATTR_READNONE
);
4616 * this takes an I,J coordinate pair,
4617 * and works out the X and Y derivatives.
4618 * it returns DDX(I), DDX(J), DDY(I), DDY(J).
4621 ac_build_ddxy_interp(struct ac_llvm_context
*ctx
, LLVMValueRef interp_ij
)
4623 LLVMValueRef result
[4], a
;
4626 for (i
= 0; i
< 2; i
++) {
4627 a
= LLVMBuildExtractElement(ctx
->builder
, interp_ij
,
4628 LLVMConstInt(ctx
->i32
, i
, false), "");
4629 result
[i
] = ac_build_ddxy(ctx
, AC_TID_MASK_TOP_LEFT
, 1, a
);
4630 result
[2+i
] = ac_build_ddxy(ctx
, AC_TID_MASK_TOP_LEFT
, 2, a
);
4632 return ac_build_gather_values(ctx
, result
, 4);
4636 ac_build_load_helper_invocation(struct ac_llvm_context
*ctx
)
4638 LLVMValueRef result
= ac_build_intrinsic(ctx
, "llvm.amdgcn.ps.live",
4640 AC_FUNC_ATTR_READNONE
);
4641 result
= LLVMBuildNot(ctx
->builder
, result
, "");
4642 return LLVMBuildSExt(ctx
->builder
, result
, ctx
->i32
, "");
4645 LLVMValueRef
ac_build_call(struct ac_llvm_context
*ctx
, LLVMValueRef func
,
4646 LLVMValueRef
*args
, unsigned num_args
)
4648 LLVMValueRef ret
= LLVMBuildCall(ctx
->builder
, func
, args
, num_args
, "");
4649 LLVMSetInstructionCallConv(ret
, LLVMGetFunctionCallConv(func
));
4654 ac_export_mrt_z(struct ac_llvm_context
*ctx
, LLVMValueRef depth
,
4655 LLVMValueRef stencil
, LLVMValueRef samplemask
,
4656 struct ac_export_args
*args
)
4659 unsigned format
= ac_get_spi_shader_z_format(depth
!= NULL
,
4661 samplemask
!= NULL
);
4663 assert(depth
|| stencil
|| samplemask
);
4665 memset(args
, 0, sizeof(*args
));
4667 args
->valid_mask
= 1; /* whether the EXEC mask is valid */
4668 args
->done
= 1; /* DONE bit */
4670 /* Specify the target we are exporting */
4671 args
->target
= V_008DFC_SQ_EXP_MRTZ
;
4673 args
->compr
= 0; /* COMP flag */
4674 args
->out
[0] = LLVMGetUndef(ctx
->f32
); /* R, depth */
4675 args
->out
[1] = LLVMGetUndef(ctx
->f32
); /* G, stencil test val[0:7], stencil op val[8:15] */
4676 args
->out
[2] = LLVMGetUndef(ctx
->f32
); /* B, sample mask */
4677 args
->out
[3] = LLVMGetUndef(ctx
->f32
); /* A, alpha to mask */
4679 if (format
== V_028710_SPI_SHADER_UINT16_ABGR
) {
4681 args
->compr
= 1; /* COMPR flag */
4684 /* Stencil should be in X[23:16]. */
4685 stencil
= ac_to_integer(ctx
, stencil
);
4686 stencil
= LLVMBuildShl(ctx
->builder
, stencil
,
4687 LLVMConstInt(ctx
->i32
, 16, 0), "");
4688 args
->out
[0] = ac_to_float(ctx
, stencil
);
4692 /* SampleMask should be in Y[15:0]. */
4693 args
->out
[1] = samplemask
;
4698 args
->out
[0] = depth
;
4702 args
->out
[1] = stencil
;
4706 args
->out
[2] = samplemask
;
4711 /* GFX6 (except OLAND and HAINAN) has a bug that it only looks
4712 * at the X writemask component. */
4713 if (ctx
->chip_class
== GFX6
&&
4714 ctx
->family
!= CHIP_OLAND
&&
4715 ctx
->family
!= CHIP_HAINAN
)
4718 /* Specify which components to enable */
4719 args
->enabled_channels
= mask
;
4723 arg_llvm_type(enum ac_arg_type type
, unsigned size
, struct ac_llvm_context
*ctx
)
4725 if (type
== AC_ARG_FLOAT
) {
4726 return size
== 1 ? ctx
->f32
: LLVMVectorType(ctx
->f32
, size
);
4727 } else if (type
== AC_ARG_INT
) {
4728 return size
== 1 ? ctx
->i32
: LLVMVectorType(ctx
->i32
, size
);
4730 LLVMTypeRef ptr_type
;
4732 case AC_ARG_CONST_PTR
:
4735 case AC_ARG_CONST_FLOAT_PTR
:
4736 ptr_type
= ctx
->f32
;
4738 case AC_ARG_CONST_PTR_PTR
:
4739 ptr_type
= ac_array_in_const32_addr_space(ctx
->i8
);
4741 case AC_ARG_CONST_DESC_PTR
:
4742 ptr_type
= ctx
->v4i32
;
4744 case AC_ARG_CONST_IMAGE_PTR
:
4745 ptr_type
= ctx
->v8i32
;
4748 unreachable("unknown arg type");
4751 return ac_array_in_const32_addr_space(ptr_type
);
4754 return ac_array_in_const_addr_space(ptr_type
);
4760 ac_build_main(const struct ac_shader_args
*args
,
4761 struct ac_llvm_context
*ctx
,
4762 enum ac_llvm_calling_convention convention
,
4763 const char *name
, LLVMTypeRef ret_type
,
4764 LLVMModuleRef module
)
4766 LLVMTypeRef arg_types
[AC_MAX_ARGS
];
4768 for (unsigned i
= 0; i
< args
->arg_count
; i
++) {
4769 arg_types
[i
] = arg_llvm_type(args
->args
[i
].type
,
4770 args
->args
[i
].size
, ctx
);
4773 LLVMTypeRef main_function_type
=
4774 LLVMFunctionType(ret_type
, arg_types
, args
->arg_count
, 0);
4776 LLVMValueRef main_function
=
4777 LLVMAddFunction(module
, name
, main_function_type
);
4778 LLVMBasicBlockRef main_function_body
=
4779 LLVMAppendBasicBlockInContext(ctx
->context
, main_function
, "main_body");
4780 LLVMPositionBuilderAtEnd(ctx
->builder
, main_function_body
);
4782 LLVMSetFunctionCallConv(main_function
, convention
);
4783 for (unsigned i
= 0; i
< args
->arg_count
; ++i
) {
4784 LLVMValueRef P
= LLVMGetParam(main_function
, i
);
4786 if (args
->args
[i
].file
!= AC_ARG_SGPR
)
4789 ac_add_function_attr(ctx
->context
, main_function
, i
+ 1, AC_FUNC_ATTR_INREG
);
4791 if (LLVMGetTypeKind(LLVMTypeOf(P
)) == LLVMPointerTypeKind
) {
4792 ac_add_function_attr(ctx
->context
, main_function
, i
+ 1, AC_FUNC_ATTR_NOALIAS
);
4793 ac_add_attr_dereferenceable(P
, UINT64_MAX
);
4797 ctx
->main_function
= main_function
;
4798 return main_function
;