2 * Copyright 2011 Christoph Bumiller
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
23 #include "codegen/nv50_ir.h"
24 #include "codegen/nv50_ir_build_util.h"
26 #include "codegen/nv50_ir_target_nvc0.h"
27 #include "codegen/nv50_ir_lowering_nvc0.h"
39 #define QUADOP(q, r, s, t) \
40 ((QOP_##q << 6) | (QOP_##r << 4) | \
41 (QOP_##s << 2) | (QOP_##t << 0))
44 NVC0LegalizeSSA::handleDIV(Instruction
*i
)
46 FlowInstruction
*call
;
49 bld
.setPosition(i
, false);
51 // Generate movs to the input regs for the call we want to generate
52 for (int s
= 0; i
->srcExists(s
); ++s
) {
53 Instruction
*ld
= i
->getSrc(s
)->getInsn();
54 // check if we are moving an immediate, propagate it in that case
55 if (!ld
|| ld
->fixed
|| (ld
->op
!= OP_LOAD
&& ld
->op
!= OP_MOV
) ||
56 !(ld
->src(0).getFile() == FILE_IMMEDIATE
))
57 bld
.mkMovToReg(s
, i
->getSrc(s
));
59 assert(ld
->getSrc(0) != NULL
);
60 bld
.mkMovToReg(s
, ld
->getSrc(0));
61 // Clear the src, to make code elimination possible here before we
62 // delete the instruction i later
65 delete_Instruction(prog
, ld
);
70 case TYPE_U32
: builtin
= NVC0_BUILTIN_DIV_U32
; break;
71 case TYPE_S32
: builtin
= NVC0_BUILTIN_DIV_S32
; break;
75 call
= bld
.mkFlow(OP_CALL
, NULL
, CC_ALWAYS
, NULL
);
76 bld
.mkMovFromReg(i
->getDef(0), i
->op
== OP_DIV
? 0 : 1);
77 bld
.mkClobber(FILE_GPR
, (i
->op
== OP_DIV
) ? 0xe : 0xd, 2);
78 bld
.mkClobber(FILE_PREDICATE
, (i
->dType
== TYPE_S32
) ? 0xf : 0x3, 0);
81 call
->absolute
= call
->builtin
= 1;
82 call
->target
.builtin
= builtin
;
83 delete_Instruction(prog
, i
);
87 NVC0LegalizeSSA::handleRCPRSQLib(Instruction
*i
, Value
*src
[])
89 FlowInstruction
*call
;
93 def
[0] = bld
.mkMovToReg(0, src
[0])->getDef(0);
94 def
[1] = bld
.mkMovToReg(1, src
[1])->getDef(0);
97 builtin
= NVC0_BUILTIN_RCP_F64
;
99 builtin
= NVC0_BUILTIN_RSQ_F64
;
101 call
= bld
.mkFlow(OP_CALL
, NULL
, CC_ALWAYS
, NULL
);
102 def
[0] = bld
.getSSA();
103 def
[1] = bld
.getSSA();
104 bld
.mkMovFromReg(def
[0], 0);
105 bld
.mkMovFromReg(def
[1], 1);
106 bld
.mkClobber(FILE_GPR
, 0x3fc, 2);
107 bld
.mkClobber(FILE_PREDICATE
, i
->op
== OP_RSQ
? 0x3 : 0x1, 0);
108 bld
.mkOp2(OP_MERGE
, TYPE_U64
, i
->getDef(0), def
[0], def
[1]);
111 call
->absolute
= call
->builtin
= 1;
112 call
->target
.builtin
= builtin
;
113 delete_Instruction(prog
, i
);
119 NVC0LegalizeSSA::handleRCPRSQ(Instruction
*i
)
121 assert(i
->dType
== TYPE_F64
);
122 // There are instructions that will compute the high 32 bits of the 64-bit
123 // float. We will just stick 0 in the bottom 32 bits.
125 bld
.setPosition(i
, false);
127 // 1. Take the source and it up.
128 Value
*src
[2], *dst
[2], *def
= i
->getDef(0);
129 bld
.mkSplit(src
, 4, i
->getSrc(0));
131 int chip
= prog
->getTarget()->getChipset();
132 if (chip
>= NVISA_GK104_CHIPSET
) {
133 handleRCPRSQLib(i
, src
);
137 // 2. We don't care about the low 32 bits of the destination. Stick a 0 in.
138 dst
[0] = bld
.loadImm(NULL
, 0);
139 dst
[1] = bld
.getSSA();
141 // 3. The new version of the instruction takes the high 32 bits of the
142 // source and outputs the high 32 bits of the destination.
143 i
->setSrc(0, src
[1]);
144 i
->setDef(0, dst
[1]);
145 i
->setType(TYPE_F32
);
146 i
->subOp
= NV50_IR_SUBOP_RCPRSQ_64H
;
148 // 4. Recombine the two dst pieces back into the original destination.
149 bld
.setPosition(i
, true);
150 bld
.mkOp2(OP_MERGE
, TYPE_U64
, def
, dst
[0], dst
[1]);
154 NVC0LegalizeSSA::handleFTZ(Instruction
*i
)
156 // Only want to flush float inputs
157 assert(i
->sType
== TYPE_F32
);
159 // If we're already flushing denorms (and NaN's) to zero, no need for this.
163 // Only certain classes of operations can flush
164 OpClass cls
= prog
->getTarget()->getOpClass(i
->op
);
165 if (cls
!= OPCLASS_ARITH
&& cls
!= OPCLASS_COMPARE
&&
166 cls
!= OPCLASS_CONVERT
)
173 NVC0LegalizeSSA::handleTEXLOD(TexInstruction
*i
)
175 if (i
->tex
.levelZero
)
180 // The LOD argument comes right after the coordinates (before depth bias,
182 int arg
= i
->tex
.target
.getArgCount();
184 // SM30+ stores the indirect handle as a separate arg, which comes before
186 if (prog
->getTarget()->getChipset() >= NVISA_GK104_CHIPSET
&&
187 i
->tex
.rIndirectSrc
>= 0)
189 // SM20 stores indirect handle combined with array coordinate
190 if (prog
->getTarget()->getChipset() < NVISA_GK104_CHIPSET
&&
191 !i
->tex
.target
.isArray() &&
192 i
->tex
.rIndirectSrc
>= 0)
195 if (!i
->src(arg
).getImmediate(lod
) || !lod
.isInteger(0))
200 i
->tex
.levelZero
= true;
201 i
->moveSources(arg
+ 1, -1);
205 NVC0LegalizeSSA::handleShift(Instruction
*lo
)
207 Value
*shift
= lo
->getSrc(1);
208 Value
*dst64
= lo
->getDef(0);
209 Value
*src
[2], *dst
[2];
210 operation op
= lo
->op
;
212 bld
.setPosition(lo
, false);
214 bld
.mkSplit(src
, 4, lo
->getSrc(0));
216 // SM30 and prior don't have the fancy new SHF.L/R ops. So the logic has to
217 // be completely emulated. For SM35+, we can use the more directed SHF
219 if (prog
->getTarget()->getChipset() < NVISA_GK20A_CHIPSET
) {
220 // The strategy here is to handle shifts >= 32 and less than 32 as
224 // If the shift is <= 32, then
225 // (HI,LO) << x = (HI << x | (LO >> (32 - x)), LO << x)
226 // If the shift is > 32, then
227 // (HI,LO) << x = (LO << (x - 32), 0)
230 // If the shift is <= 32, then
231 // (HI,LO) >> x = (HI >> x, (HI << (32 - x)) | LO >> x)
232 // If the shift is > 32, then
233 // (HI,LO) >> x = (0, HI >> (x - 32))
235 // Note that on NVIDIA hardware, a shift > 32 yields a 0 value, which we
236 // can use to our advantage. Also note the structural similarities
237 // between the right/left cases. The main difference is swapping hi/lo
238 // on input and output.
240 Value
*x32_minus_shift
, *pred
, *hi1
, *hi2
;
241 DataType type
= isSignedIntType(lo
->dType
) ? TYPE_S32
: TYPE_U32
;
242 operation antiop
= op
== OP_SHR
? OP_SHL
: OP_SHR
;
244 std::swap(src
[0], src
[1]);
245 bld
.mkOp2(OP_ADD
, TYPE_U32
, (x32_minus_shift
= bld
.getSSA()), shift
, bld
.mkImm(0x20))
246 ->src(0).mod
= Modifier(NV50_IR_MOD_NEG
);
247 bld
.mkCmp(OP_SET
, CC_LE
, TYPE_U8
, (pred
= bld
.getSSA(1, FILE_PREDICATE
)),
248 TYPE_U32
, shift
, bld
.mkImm(32));
249 // Compute HI (shift <= 32)
250 bld
.mkOp2(OP_OR
, TYPE_U32
, (hi1
= bld
.getSSA()),
251 bld
.mkOp2v(op
, TYPE_U32
, bld
.getSSA(), src
[1], shift
),
252 bld
.mkOp2v(antiop
, TYPE_U32
, bld
.getSSA(), src
[0], x32_minus_shift
))
253 ->setPredicate(CC_P
, pred
);
254 // Compute LO (all shift values)
255 bld
.mkOp2(op
, type
, (dst
[0] = bld
.getSSA()), src
[0], shift
);
256 // Compute HI (shift > 32)
257 bld
.mkOp2(op
, type
, (hi2
= bld
.getSSA()), src
[0],
258 bld
.mkOp1v(OP_NEG
, TYPE_S32
, bld
.getSSA(), x32_minus_shift
))
259 ->setPredicate(CC_NOT_P
, pred
);
260 bld
.mkOp2(OP_UNION
, TYPE_U32
, (dst
[1] = bld
.getSSA()), hi1
, hi2
);
262 std::swap(dst
[0], dst
[1]);
263 bld
.mkOp2(OP_MERGE
, TYPE_U64
, dst64
, dst
[0], dst
[1]);
264 delete_Instruction(prog
, lo
);
268 Instruction
*hi
= new_Instruction(func
, op
, TYPE_U32
);
269 lo
->bb
->insertAfter(lo
, hi
);
271 hi
->sType
= lo
->sType
;
272 lo
->dType
= TYPE_U32
;
274 hi
->setDef(0, (dst
[1] = bld
.getSSA()));
275 if (lo
->op
== OP_SHR
)
276 hi
->subOp
|= NV50_IR_SUBOP_SHIFT_HIGH
;
277 lo
->setDef(0, (dst
[0] = bld
.getSSA()));
279 bld
.setPosition(hi
, true);
281 if (lo
->op
== OP_SHL
)
284 hi
->setSrc(0, new_ImmediateValue(prog
, 0u));
285 hi
->setSrc(1, shift
);
286 hi
->setSrc(2, lo
->op
== OP_SHL
? src
[0] : src
[1]);
288 lo
->setSrc(0, src
[0]);
289 lo
->setSrc(1, shift
);
290 lo
->setSrc(2, src
[1]);
292 bld
.mkOp2(OP_MERGE
, TYPE_U64
, dst64
, dst
[0], dst
[1]);
296 NVC0LegalizeSSA::handleSET(CmpInstruction
*cmp
)
298 DataType hTy
= cmp
->sType
== TYPE_S64
? TYPE_S32
: TYPE_U32
;
300 Value
*src0
[2], *src1
[2];
301 bld
.setPosition(cmp
, false);
303 bld
.mkSplit(src0
, 4, cmp
->getSrc(0));
304 bld
.mkSplit(src1
, 4, cmp
->getSrc(1));
305 bld
.mkOp2(OP_SUB
, hTy
, NULL
, src0
[0], src1
[0])
306 ->setFlagsDef(0, (carry
= bld
.getSSA(1, FILE_FLAGS
)));
307 cmp
->setFlagsSrc(cmp
->srcCount(), carry
);
308 cmp
->setSrc(0, src0
[1]);
309 cmp
->setSrc(1, src1
[1]);
314 NVC0LegalizeSSA::visit(Function
*fn
)
316 bld
.setProgram(fn
->getProgram());
321 NVC0LegalizeSSA::visit(BasicBlock
*bb
)
324 for (Instruction
*i
= bb
->getEntry(); i
; i
= next
) {
327 if (i
->sType
== TYPE_F32
&& prog
->getType() != Program::TYPE_COMPUTE
)
333 if (i
->sType
!= TYPE_F32
)
338 if (i
->dType
== TYPE_F64
)
343 handleTEXLOD(i
->asTex());
347 if (typeSizeof(i
->sType
) == 8)
354 if (typeSizeof(i
->sType
) == 8 && i
->sType
!= TYPE_F64
)
355 handleSET(i
->asCmp());
364 NVC0LegalizePostRA::NVC0LegalizePostRA(const Program
*prog
)
368 needTexBar(prog
->getTarget()->getChipset() >= 0xe0 &&
369 prog
->getTarget()->getChipset() < 0x110)
374 NVC0LegalizePostRA::insnDominatedBy(const Instruction
*later
,
375 const Instruction
*early
) const
377 if (early
->bb
== later
->bb
)
378 return early
->serial
< later
->serial
;
379 return later
->bb
->dominatedBy(early
->bb
);
383 NVC0LegalizePostRA::addTexUse(std::list
<TexUse
> &uses
,
384 Instruction
*usei
, const Instruction
*texi
)
387 bool dominated
= insnDominatedBy(usei
, texi
);
388 // Uses before the tex have to all be included. Just because an earlier
389 // instruction dominates another instruction doesn't mean that there's no
390 // way to get from the tex to the later instruction. For example you could
391 // have nested loops, with the tex in the inner loop, and uses before it in
392 // both loops - even though the outer loop's instruction would dominate the
393 // inner's, we still want a texbar before the inner loop's instruction.
395 // However we can still use the eliding logic between uses dominated by the
396 // tex instruction, as that is unambiguously correct.
398 for (std::list
<TexUse
>::iterator it
= uses
.begin(); it
!= uses
.end();) {
400 if (insnDominatedBy(usei
, it
->insn
)) {
404 if (insnDominatedBy(it
->insn
, usei
)) {
413 uses
.push_back(TexUse(usei
, texi
, dominated
));
416 // While it might be tempting to use the an algorithm that just looks at tex
417 // uses, not all texture results are guaranteed to be used on all paths. In
418 // the case where along some control flow path a texture result is never used,
419 // we might reuse that register for something else, creating a
420 // write-after-write hazard. So we have to manually look through all
421 // instructions looking for ones that reference the registers in question.
423 NVC0LegalizePostRA::findFirstUses(
424 Instruction
*texi
, std::list
<TexUse
> &uses
)
426 int minGPR
= texi
->def(0).rep()->reg
.data
.id
;
427 int maxGPR
= minGPR
+ texi
->def(0).rep()->reg
.size
/ 4 - 1;
429 unordered_set
<const BasicBlock
*> visited
;
430 findFirstUsesBB(minGPR
, maxGPR
, texi
->next
, texi
, uses
, visited
);
434 NVC0LegalizePostRA::findFirstUsesBB(
435 int minGPR
, int maxGPR
, Instruction
*start
,
436 const Instruction
*texi
, std::list
<TexUse
> &uses
,
437 unordered_set
<const BasicBlock
*> &visited
)
439 const BasicBlock
*bb
= start
->bb
;
441 // We don't process the whole bb the first time around. This is correct,
442 // however we might be in a loop and hit this BB again, and need to process
443 // the full thing. So only mark a bb as visited if we processed it from the
445 if (start
== bb
->getEntry()) {
446 if (visited
.find(bb
) != visited
.end())
451 for (Instruction
*insn
= start
; insn
!= bb
->getExit(); insn
= insn
->next
) {
455 for (int d
= 0; insn
->defExists(d
); ++d
) {
456 const Value
*def
= insn
->def(d
).rep();
457 if (insn
->def(d
).getFile() != FILE_GPR
||
458 def
->reg
.data
.id
+ def
->reg
.size
/ 4 - 1 < minGPR
||
459 def
->reg
.data
.id
> maxGPR
)
461 addTexUse(uses
, insn
, texi
);
465 for (int s
= 0; insn
->srcExists(s
); ++s
) {
466 const Value
*src
= insn
->src(s
).rep();
467 if (insn
->src(s
).getFile() != FILE_GPR
||
468 src
->reg
.data
.id
+ src
->reg
.size
/ 4 - 1 < minGPR
||
469 src
->reg
.data
.id
> maxGPR
)
471 addTexUse(uses
, insn
, texi
);
476 for (Graph::EdgeIterator ei
= bb
->cfg
.outgoing(); !ei
.end(); ei
.next()) {
477 findFirstUsesBB(minGPR
, maxGPR
, BasicBlock::get(ei
.getNode())->getEntry(),
478 texi
, uses
, visited
);
483 // This pass is a bit long and ugly and can probably be optimized.
485 // 1. obtain a list of TEXes and their outputs' first use(s)
486 // 2. calculate the barrier level of each first use (minimal number of TEXes,
487 // over all paths, between the TEX and the use in question)
488 // 3. for each barrier, if all paths from the source TEX to that barrier
489 // contain a barrier of lesser level, it can be culled
491 NVC0LegalizePostRA::insertTextureBarriers(Function
*fn
)
493 std::list
<TexUse
> *uses
;
494 std::vector
<Instruction
*> texes
;
495 std::vector
<int> bbFirstTex
;
496 std::vector
<int> bbFirstUse
;
497 std::vector
<int> texCounts
;
498 std::vector
<TexUse
> useVec
;
501 fn
->orderInstructions(insns
);
503 texCounts
.resize(fn
->allBBlocks
.getSize(), 0);
504 bbFirstTex
.resize(fn
->allBBlocks
.getSize(), insns
.getSize());
505 bbFirstUse
.resize(fn
->allBBlocks
.getSize(), insns
.getSize());
507 // tag BB CFG nodes by their id for later
508 for (ArrayList::Iterator i
= fn
->allBBlocks
.iterator(); !i
.end(); i
.next()) {
509 BasicBlock
*bb
= reinterpret_cast<BasicBlock
*>(i
.get());
511 bb
->cfg
.tag
= bb
->getId();
514 // gather the first uses for each TEX
515 for (int i
= 0; i
< insns
.getSize(); ++i
) {
516 Instruction
*tex
= reinterpret_cast<Instruction
*>(insns
.get(i
));
517 if (isTextureOp(tex
->op
)) {
518 texes
.push_back(tex
);
519 if (!texCounts
.at(tex
->bb
->getId()))
520 bbFirstTex
[tex
->bb
->getId()] = texes
.size() - 1;
521 texCounts
[tex
->bb
->getId()]++;
527 uses
= new std::list
<TexUse
>[texes
.size()];
530 for (size_t i
= 0; i
< texes
.size(); ++i
) {
531 findFirstUses(texes
[i
], uses
[i
]);
534 // determine the barrier level at each use
535 for (size_t i
= 0; i
< texes
.size(); ++i
) {
536 for (std::list
<TexUse
>::iterator u
= uses
[i
].begin(); u
!= uses
[i
].end();
538 BasicBlock
*tb
= texes
[i
]->bb
;
539 BasicBlock
*ub
= u
->insn
->bb
;
542 for (size_t j
= i
+ 1; j
< texes
.size() &&
543 texes
[j
]->bb
== tb
&& texes
[j
]->serial
< u
->insn
->serial
;
547 u
->level
= fn
->cfg
.findLightestPathWeight(&tb
->cfg
,
548 &ub
->cfg
, texCounts
);
550 WARN("Failed to find path TEX -> TEXBAR\n");
554 // this counted all TEXes in the origin block, correct that
555 u
->level
-= i
- bbFirstTex
.at(tb
->getId()) + 1 /* this TEX */;
556 // and did not count the TEXes in the destination block, add those
557 for (size_t j
= bbFirstTex
.at(ub
->getId()); j
< texes
.size() &&
558 texes
[j
]->bb
== ub
&& texes
[j
]->serial
< u
->insn
->serial
;
562 assert(u
->level
>= 0);
563 useVec
.push_back(*u
);
568 // insert the barriers
569 for (size_t i
= 0; i
< useVec
.size(); ++i
) {
570 Instruction
*prev
= useVec
[i
].insn
->prev
;
571 if (useVec
[i
].level
< 0)
573 if (prev
&& prev
->op
== OP_TEXBAR
) {
574 if (prev
->subOp
> useVec
[i
].level
)
575 prev
->subOp
= useVec
[i
].level
;
576 prev
->setSrc(prev
->srcCount(), useVec
[i
].tex
->getDef(0));
578 Instruction
*bar
= new_Instruction(func
, OP_TEXBAR
, TYPE_NONE
);
580 bar
->subOp
= useVec
[i
].level
;
581 // make use explicit to ease latency calculation
582 bar
->setSrc(bar
->srcCount(), useVec
[i
].tex
->getDef(0));
583 useVec
[i
].insn
->bb
->insertBefore(useVec
[i
].insn
, bar
);
587 if (fn
->getProgram()->optLevel
< 3)
590 std::vector
<Limits
> limitT
, limitB
, limitS
; // entry, exit, single
592 limitT
.resize(fn
->allBBlocks
.getSize(), Limits(0, 0));
593 limitB
.resize(fn
->allBBlocks
.getSize(), Limits(0, 0));
594 limitS
.resize(fn
->allBBlocks
.getSize());
596 // cull unneeded barriers (should do that earlier, but for simplicity)
597 IteratorRef bi
= fn
->cfg
.iteratorCFG();
598 // first calculate min/max outstanding TEXes for each BB
599 for (bi
->reset(); !bi
->end(); bi
->next()) {
600 Graph::Node
*n
= reinterpret_cast<Graph::Node
*>(bi
->get());
601 BasicBlock
*bb
= BasicBlock::get(n
);
603 int max
= std::numeric_limits
<int>::max();
604 for (Instruction
*i
= bb
->getFirst(); i
; i
= i
->next
) {
605 if (isTextureOp(i
->op
)) {
607 if (max
< std::numeric_limits
<int>::max())
610 if (i
->op
== OP_TEXBAR
) {
611 min
= MIN2(min
, i
->subOp
);
612 max
= MIN2(max
, i
->subOp
);
615 // limits when looking at an isolated block
616 limitS
[bb
->getId()].min
= min
;
617 limitS
[bb
->getId()].max
= max
;
619 // propagate the min/max values
620 for (unsigned int l
= 0; l
<= fn
->loopNestingBound
; ++l
) {
621 for (bi
->reset(); !bi
->end(); bi
->next()) {
622 Graph::Node
*n
= reinterpret_cast<Graph::Node
*>(bi
->get());
623 BasicBlock
*bb
= BasicBlock::get(n
);
624 const int bbId
= bb
->getId();
625 for (Graph::EdgeIterator ei
= n
->incident(); !ei
.end(); ei
.next()) {
626 BasicBlock
*in
= BasicBlock::get(ei
.getNode());
627 const int inId
= in
->getId();
628 limitT
[bbId
].min
= MAX2(limitT
[bbId
].min
, limitB
[inId
].min
);
629 limitT
[bbId
].max
= MAX2(limitT
[bbId
].max
, limitB
[inId
].max
);
631 // I just hope this is correct ...
632 if (limitS
[bbId
].max
== std::numeric_limits
<int>::max()) {
634 limitB
[bbId
].min
= limitT
[bbId
].min
+ limitS
[bbId
].min
;
635 limitB
[bbId
].max
= limitT
[bbId
].max
+ limitS
[bbId
].min
;
637 // block contained a barrier
638 limitB
[bbId
].min
= MIN2(limitS
[bbId
].max
,
639 limitT
[bbId
].min
+ limitS
[bbId
].min
);
640 limitB
[bbId
].max
= MIN2(limitS
[bbId
].max
,
641 limitT
[bbId
].max
+ limitS
[bbId
].min
);
645 // finally delete unnecessary barriers
646 for (bi
->reset(); !bi
->end(); bi
->next()) {
647 Graph::Node
*n
= reinterpret_cast<Graph::Node
*>(bi
->get());
648 BasicBlock
*bb
= BasicBlock::get(n
);
649 Instruction
*prev
= NULL
;
651 int max
= limitT
[bb
->getId()].max
;
652 for (Instruction
*i
= bb
->getFirst(); i
; i
= next
) {
654 if (i
->op
== OP_TEXBAR
) {
655 if (i
->subOp
>= max
) {
656 delete_Instruction(prog
, i
);
660 if (prev
&& prev
->op
== OP_TEXBAR
&& prev
->subOp
>= max
) {
661 delete_Instruction(prog
, prev
);
666 if (isTextureOp(i
->op
)) {
669 if (i
&& !i
->isNop())
677 NVC0LegalizePostRA::visit(Function
*fn
)
680 insertTextureBarriers(fn
);
682 rZero
= new_LValue(fn
, FILE_GPR
);
683 pOne
= new_LValue(fn
, FILE_PREDICATE
);
684 carry
= new_LValue(fn
, FILE_FLAGS
);
686 rZero
->reg
.data
.id
= (prog
->getTarget()->getChipset() >= NVISA_GK20A_CHIPSET
) ? 255 : 63;
687 carry
->reg
.data
.id
= 0;
688 pOne
->reg
.data
.id
= 7;
694 NVC0LegalizePostRA::replaceZero(Instruction
*i
)
696 for (int s
= 0; i
->srcExists(s
); ++s
) {
697 if (s
== 2 && i
->op
== OP_SUCLAMP
)
699 if (s
== 1 && i
->op
== OP_SHLADD
)
701 ImmediateValue
*imm
= i
->getSrc(s
)->asImm();
703 if (i
->op
== OP_SELP
&& s
== 2) {
705 if (imm
->reg
.data
.u64
== 0)
706 i
->src(s
).mod
= i
->src(s
).mod
^ Modifier(NV50_IR_MOD_NOT
);
707 } else if (imm
->reg
.data
.u64
== 0) {
714 // replace CONT with BRA for single unconditional continue
716 NVC0LegalizePostRA::tryReplaceContWithBra(BasicBlock
*bb
)
718 if (bb
->cfg
.incidentCount() != 2 || bb
->getEntry()->op
!= OP_PRECONT
)
720 Graph::EdgeIterator ei
= bb
->cfg
.incident();
721 if (ei
.getType() != Graph::Edge::BACK
)
723 if (ei
.getType() != Graph::Edge::BACK
)
725 BasicBlock
*contBB
= BasicBlock::get(ei
.getNode());
727 if (!contBB
->getExit() || contBB
->getExit()->op
!= OP_CONT
||
728 contBB
->getExit()->getPredicate())
730 contBB
->getExit()->op
= OP_BRA
;
731 bb
->remove(bb
->getEntry()); // delete PRECONT
734 assert(ei
.end() || ei
.getType() != Graph::Edge::BACK
);
738 // replace branches to join blocks with join ops
740 NVC0LegalizePostRA::propagateJoin(BasicBlock
*bb
)
742 if (bb
->getEntry()->op
!= OP_JOIN
|| bb
->getEntry()->asFlow()->limit
)
744 for (Graph::EdgeIterator ei
= bb
->cfg
.incident(); !ei
.end(); ei
.next()) {
745 BasicBlock
*in
= BasicBlock::get(ei
.getNode());
746 Instruction
*exit
= in
->getExit();
748 in
->insertTail(new FlowInstruction(func
, OP_JOIN
, bb
));
749 // there should always be a terminator instruction
750 WARN("inserted missing terminator in BB:%i\n", in
->getId());
752 if (exit
->op
== OP_BRA
) {
754 exit
->asFlow()->limit
= 1; // must-not-propagate marker
757 bb
->remove(bb
->getEntry());
760 // replaces instructions which would end up as f2f or i2i with faster
762 // - fabs(a) -> fadd(0, abs a)
763 // - fneg(a) -> fadd(neg 0, neg a)
764 // - ineg(a) -> iadd(0, neg a)
765 // - fneg(abs a) -> fadd(neg 0, neg abs a)
766 // - sat(a) -> sat add(0, a)
768 NVC0LegalizePostRA::replaceCvt(Instruction
*cvt
)
770 if (!isFloatType(cvt
->sType
) && typeSizeof(cvt
->sType
) != 4)
772 if (cvt
->sType
!= cvt
->dType
)
774 // we could make it work, but in this case we have optimizations disabled
775 // and we don't really care either way.
776 if (cvt
->src(0).getFile() != FILE_GPR
&&
777 cvt
->src(0).getFile() != FILE_MEMORY_CONST
)
786 if (!isFloatType(cvt
->sType
))
789 mod1
= NV50_IR_MOD_ABS
;
792 if (!isFloatType(cvt
->sType
) && cvt
->src(0).mod
)
794 if (isFloatType(cvt
->sType
) &&
795 (cvt
->src(0).mod
&& cvt
->src(0).mod
!= Modifier(NV50_IR_MOD_ABS
)))
798 mod0
= isFloatType(cvt
->sType
) ? NV50_IR_MOD_NEG
: 0;
799 mod1
= cvt
->src(0).mod
== Modifier(NV50_IR_MOD_ABS
) ?
800 NV50_IR_MOD_NEG_ABS
: NV50_IR_MOD_NEG
;
803 if (!isFloatType(cvt
->sType
) && cvt
->src(0).mod
.abs())
806 mod1
= cvt
->src(0).mod
;
807 cvt
->saturate
= true;
814 cvt
->moveSources(0, 1);
815 cvt
->setSrc(0, rZero
);
816 cvt
->src(0).mod
= mod0
;
817 cvt
->src(1).mod
= mod1
;
821 NVC0LegalizePostRA::visit(BasicBlock
*bb
)
823 Instruction
*i
, *next
;
825 // remove pseudo operations and non-fixed no-ops, split 64 bit operations
826 for (i
= bb
->getFirst(); i
; i
= next
) {
828 if (i
->op
== OP_EMIT
|| i
->op
== OP_RESTART
) {
829 if (!i
->getDef(0)->refCount())
831 if (i
->src(0).getFile() == FILE_IMMEDIATE
)
832 i
->setSrc(0, rZero
); // initial value must be 0
838 if (i
->op
== OP_BAR
&& i
->subOp
== NV50_IR_SUBOP_BAR_SYNC
&&
839 prog
->getType() != Program::TYPE_COMPUTE
) {
840 // It seems like barriers are never required for tessellation since
841 // the warp size is 32, and there are always at most 32 tcs threads.
844 if (i
->op
== OP_LOAD
&& i
->subOp
== NV50_IR_SUBOP_LDC_IS
) {
845 int offset
= i
->src(0).get()->reg
.data
.offset
;
846 if (abs(offset
) >= 0x10000)
847 i
->src(0).get()->reg
.fileIndex
+= offset
>> 16;
848 i
->src(0).get()->reg
.data
.offset
= (int)(short)offset
;
850 // TODO: Move this to before register allocation for operations that
851 // need the $c register !
852 if (typeSizeof(i
->sType
) == 8 || typeSizeof(i
->dType
) == 8) {
854 hi
= BuildUtil::split64BitOpPostRA(func
, i
, rZero
, carry
);
859 if (i
->op
== OP_SAT
|| i
->op
== OP_NEG
|| i
->op
== OP_ABS
)
862 if (i
->op
!= OP_MOV
&& i
->op
!= OP_PFETCH
)
869 if (!tryReplaceContWithBra(bb
))
875 NVC0LoweringPass::NVC0LoweringPass(Program
*prog
) : targ(prog
->getTarget())
877 bld
.setProgram(prog
);
881 NVC0LoweringPass::visit(Function
*fn
)
883 if (prog
->getType() == Program::TYPE_GEOMETRY
) {
884 assert(!strncmp(fn
->getName(), "MAIN", 4));
885 // TODO: when we generate actual functions pass this value along somehow
886 bld
.setPosition(BasicBlock::get(fn
->cfg
.getRoot()), false);
887 gpEmitAddress
= bld
.loadImm(NULL
, 0)->asLValue();
889 bld
.setPosition(BasicBlock::get(fn
->cfgExit
)->getExit(), false);
890 bld
.mkMovToReg(0, gpEmitAddress
);
897 NVC0LoweringPass::visit(BasicBlock
*bb
)
903 NVC0LoweringPass::loadTexHandle(Value
*ptr
, unsigned int slot
)
905 uint8_t b
= prog
->driver
->io
.auxCBSlot
;
906 uint32_t off
= prog
->driver
->io
.texBindBase
+ slot
* 4;
909 ptr
= bld
.mkOp2v(OP_SHL
, TYPE_U32
, bld
.getSSA(), ptr
, bld
.mkImm(2));
912 mkLoadv(TYPE_U32
, bld
.mkSymbol(FILE_MEMORY_CONST
, b
, TYPE_U32
, off
), ptr
);
915 // move array source to first slot, convert to u16, add indirections
917 NVC0LoweringPass::handleTEX(TexInstruction
*i
)
919 const int dim
= i
->tex
.target
.getDim() + i
->tex
.target
.isCube();
920 const int arg
= i
->tex
.target
.getArgCount();
921 const int lyr
= arg
- (i
->tex
.target
.isMS() ? 2 : 1);
922 const int chipset
= prog
->getTarget()->getChipset();
924 /* Only normalize in the non-explicit derivatives case. For explicit
925 * derivatives, this is handled in handleManualTXD.
927 if (i
->tex
.target
.isCube() && i
->dPdx
[0].get() == NULL
) {
930 for (c
= 0; c
< 3; ++c
)
931 src
[c
] = bld
.mkOp1v(OP_ABS
, TYPE_F32
, bld
.getSSA(), i
->getSrc(c
));
932 val
= bld
.getScratch();
933 bld
.mkOp2(OP_MAX
, TYPE_F32
, val
, src
[0], src
[1]);
934 bld
.mkOp2(OP_MAX
, TYPE_F32
, val
, src
[2], val
);
935 bld
.mkOp1(OP_RCP
, TYPE_F32
, val
, val
);
936 for (c
= 0; c
< 3; ++c
) {
937 i
->setSrc(c
, bld
.mkOp2v(OP_MUL
, TYPE_F32
, bld
.getSSA(),
942 // Arguments to the TEX instruction are a little insane. Even though the
943 // encoding is identical between SM20 and SM30, the arguments mean
944 // different things between Fermi and Kepler+. A lot of arguments are
945 // optional based on flags passed to the instruction. This summarizes the
955 // - tg4: 8 bits each, either 2 (1 offset reg) or 8 (2 offset reg)
956 // - other: 4 bits each, single reg
960 // array (+ offsets for txd in upper 16 bits)
965 // offsets (same as fermi, except txd which takes it with array)
982 if (chipset
>= NVISA_GK104_CHIPSET
) {
983 if (i
->tex
.rIndirectSrc
>= 0 || i
->tex
.sIndirectSrc
>= 0) {
984 // XXX this ignores tsc, and assumes a 1:1 mapping
985 assert(i
->tex
.rIndirectSrc
>= 0);
986 if (!i
->tex
.bindless
) {
987 Value
*hnd
= loadTexHandle(i
->getIndirectR(), i
->tex
.r
);
990 i
->setIndirectR(hnd
);
992 i
->setIndirectS(NULL
);
993 } else if (i
->tex
.r
== i
->tex
.s
|| i
->op
== OP_TXF
) {
994 if (i
->tex
.r
== 0xffff)
995 i
->tex
.r
= prog
->driver
->io
.fbtexBindBase
/ 4;
997 i
->tex
.r
+= prog
->driver
->io
.texBindBase
/ 4;
998 i
->tex
.s
= 0; // only a single cX[] value possible here
1000 Value
*hnd
= bld
.getScratch();
1001 Value
*rHnd
= loadTexHandle(NULL
, i
->tex
.r
);
1002 Value
*sHnd
= loadTexHandle(NULL
, i
->tex
.s
);
1004 bld
.mkOp3(OP_INSBF
, TYPE_U32
, hnd
, rHnd
, bld
.mkImm(0x1400), sHnd
);
1006 i
->tex
.r
= 0; // not used for indirect tex
1008 i
->setIndirectR(hnd
);
1010 if (i
->tex
.target
.isArray()) {
1011 LValue
*layer
= new_LValue(func
, FILE_GPR
);
1012 Value
*src
= i
->getSrc(lyr
);
1013 const int sat
= (i
->op
== OP_TXF
) ? 1 : 0;
1014 DataType sTy
= (i
->op
== OP_TXF
) ? TYPE_U32
: TYPE_F32
;
1015 bld
.mkCvt(OP_CVT
, TYPE_U16
, layer
, sTy
, src
)->saturate
= sat
;
1016 if (i
->op
!= OP_TXD
|| chipset
< NVISA_GM107_CHIPSET
) {
1017 for (int s
= dim
; s
>= 1; --s
)
1018 i
->setSrc(s
, i
->getSrc(s
- 1));
1019 i
->setSrc(0, layer
);
1021 i
->setSrc(dim
, layer
);
1024 // Move the indirect reference to the first place
1025 if (i
->tex
.rIndirectSrc
>= 0 && (
1026 i
->op
== OP_TXD
|| chipset
< NVISA_GM107_CHIPSET
)) {
1027 Value
*hnd
= i
->getIndirectR();
1029 i
->setIndirectR(NULL
);
1030 i
->moveSources(0, 1);
1032 i
->tex
.rIndirectSrc
= 0;
1033 i
->tex
.sIndirectSrc
= -1;
1035 // Move the indirect reference to right after the coords
1036 else if (i
->tex
.rIndirectSrc
>= 0 && chipset
>= NVISA_GM107_CHIPSET
) {
1037 Value
*hnd
= i
->getIndirectR();
1039 i
->setIndirectR(NULL
);
1040 i
->moveSources(arg
, 1);
1041 i
->setSrc(arg
, hnd
);
1042 i
->tex
.rIndirectSrc
= 0;
1043 i
->tex
.sIndirectSrc
= -1;
1046 // (nvc0) generate and move the tsc/tic/array source to the front
1047 if (i
->tex
.target
.isArray() || i
->tex
.rIndirectSrc
>= 0 || i
->tex
.sIndirectSrc
>= 0) {
1048 LValue
*src
= new_LValue(func
, FILE_GPR
); // 0xttxsaaaa
1050 Value
*ticRel
= i
->getIndirectR();
1051 Value
*tscRel
= i
->getIndirectS();
1053 if (i
->tex
.r
== 0xffff) {
1059 i
->setSrc(i
->tex
.rIndirectSrc
, NULL
);
1061 ticRel
= bld
.mkOp2v(OP_ADD
, TYPE_U32
, bld
.getScratch(),
1062 ticRel
, bld
.mkImm(i
->tex
.r
));
1065 i
->setSrc(i
->tex
.sIndirectSrc
, NULL
);
1067 tscRel
= bld
.mkOp2v(OP_ADD
, TYPE_U32
, bld
.getScratch(),
1068 tscRel
, bld
.mkImm(i
->tex
.s
));
1071 Value
*arrayIndex
= i
->tex
.target
.isArray() ? i
->getSrc(lyr
) : NULL
;
1073 for (int s
= dim
; s
>= 1; --s
)
1074 i
->setSrc(s
, i
->getSrc(s
- 1));
1075 i
->setSrc(0, arrayIndex
);
1077 i
->moveSources(0, 1);
1081 int sat
= (i
->op
== OP_TXF
) ? 1 : 0;
1082 DataType sTy
= (i
->op
== OP_TXF
) ? TYPE_U32
: TYPE_F32
;
1083 bld
.mkCvt(OP_CVT
, TYPE_U16
, src
, sTy
, arrayIndex
)->saturate
= sat
;
1085 bld
.loadImm(src
, 0);
1089 bld
.mkOp3(OP_INSBF
, TYPE_U32
, src
, ticRel
, bld
.mkImm(0x0917), src
);
1091 bld
.mkOp3(OP_INSBF
, TYPE_U32
, src
, tscRel
, bld
.mkImm(0x0710), src
);
1096 // For nvc0, the sample id has to be in the second operand, as the offset
1097 // does. Right now we don't know how to pass both in, and this case can't
1098 // happen with OpenGL. On nve0, the sample id is part of the texture
1099 // coordinate argument.
1100 assert(chipset
>= NVISA_GK104_CHIPSET
||
1101 !i
->tex
.useOffsets
|| !i
->tex
.target
.isMS());
1103 // offset is between lod and dc
1104 if (i
->tex
.useOffsets
) {
1106 int s
= i
->srcCount(0xff, true);
1107 if (i
->op
!= OP_TXD
|| chipset
< NVISA_GK104_CHIPSET
) {
1108 if (i
->tex
.target
.isShadow())
1110 if (i
->srcExists(s
)) // move potential predicate out of the way
1111 i
->moveSources(s
, 1);
1112 if (i
->tex
.useOffsets
== 4 && i
->srcExists(s
+ 1))
1113 i
->moveSources(s
+ 1, 1);
1115 if (i
->op
== OP_TXG
) {
1116 // Either there is 1 offset, which goes into the 2 low bytes of the
1117 // first source, or there are 4 offsets, which go into 2 sources (8
1118 // values, 1 byte each).
1119 Value
*offs
[2] = {NULL
, NULL
};
1120 for (n
= 0; n
< i
->tex
.useOffsets
; n
++) {
1121 for (c
= 0; c
< 2; ++c
) {
1122 if ((n
% 2) == 0 && c
== 0)
1123 bld
.mkMov(offs
[n
/ 2] = bld
.getScratch(), i
->offset
[n
][c
].get());
1125 bld
.mkOp3(OP_INSBF
, TYPE_U32
,
1127 i
->offset
[n
][c
].get(),
1128 bld
.mkImm(0x800 | ((n
* 16 + c
* 8) % 32)),
1132 i
->setSrc(s
, offs
[0]);
1134 i
->setSrc(s
+ 1, offs
[1]);
1137 assert(i
->tex
.useOffsets
== 1);
1138 for (c
= 0; c
< 3; ++c
) {
1140 if (!i
->offset
[0][c
].getImmediate(val
))
1141 assert(!"non-immediate offset passed to non-TXG");
1142 imm
|= (val
.reg
.data
.u32
& 0xf) << (c
* 4);
1144 if (i
->op
== OP_TXD
&& chipset
>= NVISA_GK104_CHIPSET
) {
1145 // The offset goes into the upper 16 bits of the array index. So
1146 // create it if it's not already there, and INSBF it if it already
1148 s
= (i
->tex
.rIndirectSrc
>= 0) ? 1 : 0;
1149 if (chipset
>= NVISA_GM107_CHIPSET
)
1151 if (i
->tex
.target
.isArray()) {
1152 Value
*offset
= bld
.getScratch();
1153 bld
.mkOp3(OP_INSBF
, TYPE_U32
, offset
,
1154 bld
.loadImm(NULL
, imm
), bld
.mkImm(0xc10),
1156 i
->setSrc(s
, offset
);
1158 i
->moveSources(s
, 1);
1159 i
->setSrc(s
, bld
.loadImm(NULL
, imm
<< 16));
1162 i
->setSrc(s
, bld
.loadImm(NULL
, imm
));
1171 NVC0LoweringPass::handleManualTXD(TexInstruction
*i
)
1173 // Always done from the l0 perspective. This is the way that NVIDIA's
1174 // driver does it, and doing it from the "current" lane's perpsective
1175 // doesn't seem to always work for reasons that aren't altogether clear,
1176 // even in frag shaders.
1178 // Note that we must move not only the coordinates into lane0, but also all
1179 // ancillary arguments, like array indices and depth compare as they may
1180 // differ between lanes. Offsets for TXD are supposed to be uniform, so we
1181 // leave them alone.
1182 static const uint8_t qOps
[2] =
1183 { QUADOP(MOV2
, ADD
, MOV2
, ADD
), QUADOP(MOV2
, MOV2
, ADD
, ADD
) };
1186 Value
*crd
[3], *arr
[2], *shadow
;
1188 Value
*zero
= bld
.loadImm(bld
.getSSA(), 0);
1190 const int dim
= i
->tex
.target
.getDim() + i
->tex
.target
.isCube();
1192 // This function is invoked after handleTEX lowering, so we have to expect
1193 // the arguments in the order that the hw wants them. For Fermi, array and
1194 // indirect are both in the leading arg, while for Kepler, array and
1195 // indirect are separate (and both precede the coordinates). Maxwell is
1196 // handled in a separate function.
1198 if (targ
->getChipset() < NVISA_GK104_CHIPSET
)
1199 array
= i
->tex
.target
.isArray() || i
->tex
.rIndirectSrc
>= 0;
1201 array
= i
->tex
.target
.isArray() + (i
->tex
.rIndirectSrc
>= 0);
1203 i
->op
= OP_TEX
; // no need to clone dPdx/dPdy later
1205 for (c
= 0; c
< dim
; ++c
)
1206 crd
[c
] = bld
.getScratch();
1207 for (c
= 0; c
< array
; ++c
)
1208 arr
[c
] = bld
.getScratch();
1209 shadow
= bld
.getScratch();
1211 for (l
= 0; l
< 4; ++l
) {
1212 Value
*src
[3], *val
;
1214 bld
.mkOp(OP_QUADON
, TYPE_NONE
, NULL
);
1215 // we're using the texture result from lane 0 in all cases, so make sure
1216 // that lane 0 is pointing at the proper array index, indirect value,
1217 // and depth compare.
1219 for (c
= 0; c
< array
; ++c
)
1220 bld
.mkQuadop(0x00, arr
[c
], l
, i
->getSrc(c
), zero
);
1221 if (i
->tex
.target
.isShadow()) {
1222 // The next argument after coords is the depth compare
1223 bld
.mkQuadop(0x00, shadow
, l
, i
->getSrc(array
+ dim
), zero
);
1226 // mov position coordinates from lane l to all lanes
1227 for (c
= 0; c
< dim
; ++c
)
1228 bld
.mkQuadop(0x00, crd
[c
], l
, i
->getSrc(c
+ array
), zero
);
1229 // add dPdx from lane l to lanes dx
1230 for (c
= 0; c
< dim
; ++c
)
1231 bld
.mkQuadop(qOps
[0], crd
[c
], l
, i
->dPdx
[c
].get(), crd
[c
]);
1232 // add dPdy from lane l to lanes dy
1233 for (c
= 0; c
< dim
; ++c
)
1234 bld
.mkQuadop(qOps
[1], crd
[c
], l
, i
->dPdy
[c
].get(), crd
[c
]);
1235 // normalize cube coordinates
1236 if (i
->tex
.target
.isCube()) {
1237 for (c
= 0; c
< 3; ++c
)
1238 src
[c
] = bld
.mkOp1v(OP_ABS
, TYPE_F32
, bld
.getSSA(), crd
[c
]);
1239 val
= bld
.getScratch();
1240 bld
.mkOp2(OP_MAX
, TYPE_F32
, val
, src
[0], src
[1]);
1241 bld
.mkOp2(OP_MAX
, TYPE_F32
, val
, src
[2], val
);
1242 bld
.mkOp1(OP_RCP
, TYPE_F32
, val
, val
);
1243 for (c
= 0; c
< 3; ++c
)
1244 src
[c
] = bld
.mkOp2v(OP_MUL
, TYPE_F32
, bld
.getSSA(), crd
[c
], val
);
1246 for (c
= 0; c
< dim
; ++c
)
1250 bld
.insert(tex
= cloneForward(func
, i
));
1252 for (c
= 0; c
< array
; ++c
)
1253 tex
->setSrc(c
, arr
[c
]);
1254 if (i
->tex
.target
.isShadow())
1255 tex
->setSrc(array
+ dim
, shadow
);
1257 for (c
= 0; c
< dim
; ++c
)
1258 tex
->setSrc(c
+ array
, src
[c
]);
1259 // broadcast results from lane 0 to all lanes so that the moves *into*
1260 // the target lane pick up the proper value.
1262 for (c
= 0; i
->defExists(c
); ++c
)
1263 bld
.mkQuadop(0x00, tex
->getDef(c
), 0, tex
->getDef(c
), zero
);
1264 bld
.mkOp(OP_QUADPOP
, TYPE_NONE
, NULL
);
1267 for (c
= 0; i
->defExists(c
); ++c
) {
1269 def
[c
][l
] = bld
.getSSA();
1270 mov
= bld
.mkMov(def
[c
][l
], tex
->getDef(c
));
1272 mov
->lanes
= 1 << l
;
1276 for (c
= 0; i
->defExists(c
); ++c
) {
1277 Instruction
*u
= bld
.mkOp(OP_UNION
, TYPE_U32
, i
->getDef(c
));
1278 for (l
= 0; l
< 4; ++l
)
1279 u
->setSrc(l
, def
[c
][l
]);
1287 NVC0LoweringPass::handleTXD(TexInstruction
*txd
)
1289 int dim
= txd
->tex
.target
.getDim() + txd
->tex
.target
.isCube();
1290 unsigned arg
= txd
->tex
.target
.getArgCount();
1291 unsigned expected_args
= arg
;
1292 const int chipset
= prog
->getTarget()->getChipset();
1294 if (chipset
>= NVISA_GK104_CHIPSET
) {
1295 if (!txd
->tex
.target
.isArray() && txd
->tex
.useOffsets
)
1297 if (txd
->tex
.rIndirectSrc
>= 0 || txd
->tex
.sIndirectSrc
>= 0)
1300 if (txd
->tex
.useOffsets
)
1302 if (!txd
->tex
.target
.isArray() && (
1303 txd
->tex
.rIndirectSrc
>= 0 || txd
->tex
.sIndirectSrc
>= 0))
1307 if (expected_args
> 4 ||
1309 txd
->tex
.target
.isShadow())
1313 while (txd
->srcExists(arg
))
1316 txd
->tex
.derivAll
= true;
1317 if (txd
->op
== OP_TEX
)
1318 return handleManualTXD(txd
);
1320 assert(arg
== expected_args
);
1321 for (int c
= 0; c
< dim
; ++c
) {
1322 txd
->setSrc(arg
+ c
* 2 + 0, txd
->dPdx
[c
]);
1323 txd
->setSrc(arg
+ c
* 2 + 1, txd
->dPdy
[c
]);
1324 txd
->dPdx
[c
].set(NULL
);
1325 txd
->dPdy
[c
].set(NULL
);
1328 // In this case we have fewer than 4 "real" arguments, which means that
1329 // handleTEX didn't apply any padding. However we have to make sure that
1330 // the second "group" of arguments still gets padded up to 4.
1331 if (chipset
>= NVISA_GK104_CHIPSET
) {
1332 int s
= arg
+ 2 * dim
;
1333 if (s
>= 4 && s
< 7) {
1334 if (txd
->srcExists(s
)) // move potential predicate out of the way
1335 txd
->moveSources(s
, 7 - s
);
1337 txd
->setSrc(s
++, bld
.loadImm(NULL
, 0));
1345 NVC0LoweringPass::handleTXQ(TexInstruction
*txq
)
1347 const int chipset
= prog
->getTarget()->getChipset();
1348 if (chipset
>= NVISA_GK104_CHIPSET
&& txq
->tex
.rIndirectSrc
< 0)
1349 txq
->tex
.r
+= prog
->driver
->io
.texBindBase
/ 4;
1351 if (txq
->tex
.rIndirectSrc
< 0)
1354 Value
*ticRel
= txq
->getIndirectR();
1356 txq
->setIndirectS(NULL
);
1357 txq
->tex
.sIndirectSrc
= -1;
1361 if (chipset
< NVISA_GK104_CHIPSET
) {
1362 LValue
*src
= new_LValue(func
, FILE_GPR
); // 0xttxsaaaa
1364 txq
->setSrc(txq
->tex
.rIndirectSrc
, NULL
);
1366 ticRel
= bld
.mkOp2v(OP_ADD
, TYPE_U32
, bld
.getScratch(),
1367 ticRel
, bld
.mkImm(txq
->tex
.r
));
1369 bld
.mkOp2(OP_SHL
, TYPE_U32
, src
, ticRel
, bld
.mkImm(0x17));
1371 txq
->moveSources(0, 1);
1372 txq
->setSrc(0, src
);
1374 Value
*hnd
= loadTexHandle(txq
->getIndirectR(), txq
->tex
.r
);
1378 txq
->setIndirectR(NULL
);
1379 txq
->moveSources(0, 1);
1380 txq
->setSrc(0, hnd
);
1381 txq
->tex
.rIndirectSrc
= 0;
1388 NVC0LoweringPass::handleTXLQ(TexInstruction
*i
)
1390 /* The outputs are inverted compared to what the TGSI instruction
1391 * expects. Take that into account in the mask.
1393 assert((i
->tex
.mask
& ~3) == 0);
1394 if (i
->tex
.mask
== 1)
1396 else if (i
->tex
.mask
== 2)
1399 bld
.setPosition(i
, true);
1401 /* The returned values are not quite what we want:
1402 * (a) convert from s16/u16 to f32
1403 * (b) multiply by 1/256
1405 for (int def
= 0; def
< 2; ++def
) {
1406 if (!i
->defExists(def
))
1408 enum DataType type
= TYPE_S16
;
1409 if (i
->tex
.mask
== 2 || def
> 0)
1411 bld
.mkCvt(OP_CVT
, TYPE_F32
, i
->getDef(def
), type
, i
->getDef(def
));
1412 bld
.mkOp2(OP_MUL
, TYPE_F32
, i
->getDef(def
),
1413 i
->getDef(def
), bld
.loadImm(NULL
, 1.0f
/ 256));
1415 if (i
->tex
.mask
== 3) {
1416 LValue
*t
= new_LValue(func
, FILE_GPR
);
1417 bld
.mkMov(t
, i
->getDef(0));
1418 bld
.mkMov(i
->getDef(0), i
->getDef(1));
1419 bld
.mkMov(i
->getDef(1), t
);
1425 NVC0LoweringPass::handleBUFQ(Instruction
*bufq
)
1428 bufq
->setSrc(0, loadBufLength32(bufq
->getIndirect(0, 1),
1429 bufq
->getSrc(0)->reg
.fileIndex
* 16));
1430 bufq
->setIndirect(0, 0, NULL
);
1431 bufq
->setIndirect(0, 1, NULL
);
1436 NVC0LoweringPass::handleSharedATOMNVE4(Instruction
*atom
)
1438 assert(atom
->src(0).getFile() == FILE_MEMORY_SHARED
);
1440 BasicBlock
*currBB
= atom
->bb
;
1441 BasicBlock
*tryLockBB
= atom
->bb
->splitBefore(atom
, false);
1442 BasicBlock
*joinBB
= atom
->bb
->splitAfter(atom
);
1443 BasicBlock
*setAndUnlockBB
= new BasicBlock(func
);
1444 BasicBlock
*failLockBB
= new BasicBlock(func
);
1446 bld
.setPosition(currBB
, true);
1447 assert(!currBB
->joinAt
);
1448 currBB
->joinAt
= bld
.mkFlow(OP_JOINAT
, joinBB
, CC_ALWAYS
, NULL
);
1450 CmpInstruction
*pred
=
1451 bld
.mkCmp(OP_SET
, CC_EQ
, TYPE_U32
, bld
.getSSA(1, FILE_PREDICATE
),
1452 TYPE_U32
, bld
.mkImm(0), bld
.mkImm(1));
1454 bld
.mkFlow(OP_BRA
, tryLockBB
, CC_ALWAYS
, NULL
);
1455 currBB
->cfg
.attach(&tryLockBB
->cfg
, Graph::Edge::TREE
);
1457 bld
.setPosition(tryLockBB
, true);
1460 bld
.mkLoad(TYPE_U32
, atom
->getDef(0), atom
->getSrc(0)->asSym(),
1461 atom
->getIndirect(0, 0));
1462 ld
->setDef(1, bld
.getSSA(1, FILE_PREDICATE
));
1463 ld
->subOp
= NV50_IR_SUBOP_LOAD_LOCKED
;
1465 bld
.mkFlow(OP_BRA
, setAndUnlockBB
, CC_P
, ld
->getDef(1));
1466 bld
.mkFlow(OP_BRA
, failLockBB
, CC_ALWAYS
, NULL
);
1467 tryLockBB
->cfg
.attach(&failLockBB
->cfg
, Graph::Edge::CROSS
);
1468 tryLockBB
->cfg
.attach(&setAndUnlockBB
->cfg
, Graph::Edge::TREE
);
1470 tryLockBB
->cfg
.detach(&joinBB
->cfg
);
1473 bld
.setPosition(setAndUnlockBB
, true);
1475 if (atom
->subOp
== NV50_IR_SUBOP_ATOM_EXCH
) {
1476 // Read the old value, and write the new one.
1477 stVal
= atom
->getSrc(1);
1478 } else if (atom
->subOp
== NV50_IR_SUBOP_ATOM_CAS
) {
1479 CmpInstruction
*set
=
1480 bld
.mkCmp(OP_SET
, CC_EQ
, TYPE_U32
, bld
.getSSA(),
1481 TYPE_U32
, ld
->getDef(0), atom
->getSrc(1));
1483 bld
.mkCmp(OP_SLCT
, CC_NE
, TYPE_U32
, (stVal
= bld
.getSSA()),
1484 TYPE_U32
, atom
->getSrc(2), ld
->getDef(0), set
->getDef(0));
1488 switch (atom
->subOp
) {
1489 case NV50_IR_SUBOP_ATOM_ADD
:
1492 case NV50_IR_SUBOP_ATOM_AND
:
1495 case NV50_IR_SUBOP_ATOM_OR
:
1498 case NV50_IR_SUBOP_ATOM_XOR
:
1501 case NV50_IR_SUBOP_ATOM_MIN
:
1504 case NV50_IR_SUBOP_ATOM_MAX
:
1512 stVal
= bld
.mkOp2v(op
, atom
->dType
, bld
.getSSA(), ld
->getDef(0),
1517 bld
.mkStore(OP_STORE
, TYPE_U32
, atom
->getSrc(0)->asSym(),
1518 atom
->getIndirect(0, 0), stVal
);
1519 st
->setDef(0, pred
->getDef(0));
1520 st
->subOp
= NV50_IR_SUBOP_STORE_UNLOCKED
;
1522 bld
.mkFlow(OP_BRA
, failLockBB
, CC_ALWAYS
, NULL
);
1523 setAndUnlockBB
->cfg
.attach(&failLockBB
->cfg
, Graph::Edge::TREE
);
1525 // Lock until the store has not been performed.
1526 bld
.setPosition(failLockBB
, true);
1527 bld
.mkFlow(OP_BRA
, tryLockBB
, CC_NOT_P
, pred
->getDef(0));
1528 bld
.mkFlow(OP_BRA
, joinBB
, CC_ALWAYS
, NULL
);
1529 failLockBB
->cfg
.attach(&tryLockBB
->cfg
, Graph::Edge::BACK
);
1530 failLockBB
->cfg
.attach(&joinBB
->cfg
, Graph::Edge::TREE
);
1532 bld
.setPosition(joinBB
, false);
1533 bld
.mkFlow(OP_JOIN
, NULL
, CC_ALWAYS
, NULL
)->fixed
= 1;
1537 NVC0LoweringPass::handleSharedATOM(Instruction
*atom
)
1539 assert(atom
->src(0).getFile() == FILE_MEMORY_SHARED
);
1541 BasicBlock
*currBB
= atom
->bb
;
1542 BasicBlock
*tryLockAndSetBB
= atom
->bb
->splitBefore(atom
, false);
1543 BasicBlock
*joinBB
= atom
->bb
->splitAfter(atom
);
1545 bld
.setPosition(currBB
, true);
1546 assert(!currBB
->joinAt
);
1547 currBB
->joinAt
= bld
.mkFlow(OP_JOINAT
, joinBB
, CC_ALWAYS
, NULL
);
1549 bld
.mkFlow(OP_BRA
, tryLockAndSetBB
, CC_ALWAYS
, NULL
);
1550 currBB
->cfg
.attach(&tryLockAndSetBB
->cfg
, Graph::Edge::TREE
);
1552 bld
.setPosition(tryLockAndSetBB
, true);
1555 bld
.mkLoad(TYPE_U32
, atom
->getDef(0), atom
->getSrc(0)->asSym(),
1556 atom
->getIndirect(0, 0));
1557 ld
->setDef(1, bld
.getSSA(1, FILE_PREDICATE
));
1558 ld
->subOp
= NV50_IR_SUBOP_LOAD_LOCKED
;
1561 if (atom
->subOp
== NV50_IR_SUBOP_ATOM_EXCH
) {
1562 // Read the old value, and write the new one.
1563 stVal
= atom
->getSrc(1);
1564 } else if (atom
->subOp
== NV50_IR_SUBOP_ATOM_CAS
) {
1565 CmpInstruction
*set
=
1566 bld
.mkCmp(OP_SET
, CC_EQ
, TYPE_U32
, bld
.getSSA(1, FILE_PREDICATE
),
1567 TYPE_U32
, ld
->getDef(0), atom
->getSrc(1));
1568 set
->setPredicate(CC_P
, ld
->getDef(1));
1571 bld
.mkOp3(OP_SELP
, TYPE_U32
, bld
.getSSA(), ld
->getDef(0),
1572 atom
->getSrc(2), set
->getDef(0));
1573 selp
->src(2).mod
= Modifier(NV50_IR_MOD_NOT
);
1574 selp
->setPredicate(CC_P
, ld
->getDef(1));
1576 stVal
= selp
->getDef(0);
1580 switch (atom
->subOp
) {
1581 case NV50_IR_SUBOP_ATOM_ADD
:
1584 case NV50_IR_SUBOP_ATOM_AND
:
1587 case NV50_IR_SUBOP_ATOM_OR
:
1590 case NV50_IR_SUBOP_ATOM_XOR
:
1593 case NV50_IR_SUBOP_ATOM_MIN
:
1596 case NV50_IR_SUBOP_ATOM_MAX
:
1605 bld
.mkOp2(op
, atom
->dType
, bld
.getSSA(), ld
->getDef(0),
1607 i
->setPredicate(CC_P
, ld
->getDef(1));
1609 stVal
= i
->getDef(0);
1613 bld
.mkStore(OP_STORE
, TYPE_U32
, atom
->getSrc(0)->asSym(),
1614 atom
->getIndirect(0, 0), stVal
);
1615 st
->setPredicate(CC_P
, ld
->getDef(1));
1616 st
->subOp
= NV50_IR_SUBOP_STORE_UNLOCKED
;
1618 // Loop until the lock is acquired.
1619 bld
.mkFlow(OP_BRA
, tryLockAndSetBB
, CC_NOT_P
, ld
->getDef(1));
1620 tryLockAndSetBB
->cfg
.attach(&tryLockAndSetBB
->cfg
, Graph::Edge::BACK
);
1621 tryLockAndSetBB
->cfg
.attach(&joinBB
->cfg
, Graph::Edge::CROSS
);
1622 bld
.mkFlow(OP_BRA
, joinBB
, CC_ALWAYS
, NULL
);
1626 bld
.setPosition(joinBB
, false);
1627 bld
.mkFlow(OP_JOIN
, NULL
, CC_ALWAYS
, NULL
)->fixed
= 1;
1631 NVC0LoweringPass::handleATOM(Instruction
*atom
)
1634 Value
*ptr
= atom
->getIndirect(0, 0), *ind
= atom
->getIndirect(0, 1), *base
;
1636 switch (atom
->src(0).getFile()) {
1637 case FILE_MEMORY_LOCAL
:
1640 case FILE_MEMORY_SHARED
:
1641 // For Fermi/Kepler, we have to use ld lock/st unlock to perform atomic
1642 // operations on shared memory. For Maxwell, ATOMS is enough.
1643 if (targ
->getChipset() < NVISA_GK104_CHIPSET
)
1644 handleSharedATOM(atom
);
1645 else if (targ
->getChipset() < NVISA_GM107_CHIPSET
)
1646 handleSharedATOMNVE4(atom
);
1648 case FILE_MEMORY_GLOBAL
:
1651 assert(atom
->src(0).getFile() == FILE_MEMORY_BUFFER
);
1652 base
= loadBufInfo64(ind
, atom
->getSrc(0)->reg
.fileIndex
* 16);
1653 assert(base
->reg
.size
== 8);
1655 base
= bld
.mkOp2v(OP_ADD
, TYPE_U64
, base
, base
, ptr
);
1656 assert(base
->reg
.size
== 8);
1657 atom
->setIndirect(0, 0, base
);
1658 atom
->getSrc(0)->reg
.file
= FILE_MEMORY_GLOBAL
;
1660 // Harden against out-of-bounds accesses
1661 Value
*offset
= bld
.loadImm(NULL
, atom
->getSrc(0)->reg
.data
.offset
+ typeSizeof(atom
->sType
));
1662 Value
*length
= loadBufLength32(ind
, atom
->getSrc(0)->reg
.fileIndex
* 16);
1663 Value
*pred
= new_LValue(func
, FILE_PREDICATE
);
1665 bld
.mkOp2(OP_ADD
, TYPE_U32
, offset
, offset
, ptr
);
1666 bld
.mkCmp(OP_SET
, CC_GT
, TYPE_U32
, pred
, TYPE_U32
, offset
, length
);
1667 atom
->setPredicate(CC_NOT_P
, pred
);
1668 if (atom
->defExists(0)) {
1669 Value
*zero
, *dst
= atom
->getDef(0);
1670 atom
->setDef(0, bld
.getSSA());
1672 bld
.setPosition(atom
, true);
1673 bld
.mkMov((zero
= bld
.getSSA()), bld
.mkImm(0))
1674 ->setPredicate(CC_P
, pred
);
1675 bld
.mkOp2(OP_UNION
, TYPE_U32
, dst
, atom
->getDef(0), zero
);
1681 bld
.mkOp1v(OP_RDSV
, TYPE_U32
, bld
.getScratch(), bld
.mkSysVal(sv
, 0));
1683 atom
->setSrc(0, cloneShallow(func
, atom
->getSrc(0)));
1684 atom
->getSrc(0)->reg
.file
= FILE_MEMORY_GLOBAL
;
1686 base
= bld
.mkOp2v(OP_ADD
, TYPE_U32
, base
, base
, ptr
);
1687 atom
->setIndirect(0, 1, NULL
);
1688 atom
->setIndirect(0, 0, base
);
1694 NVC0LoweringPass::handleCasExch(Instruction
*cas
, bool needCctl
)
1696 if (targ
->getChipset() < NVISA_GM107_CHIPSET
) {
1697 if (cas
->src(0).getFile() == FILE_MEMORY_SHARED
) {
1698 // ATOM_CAS and ATOM_EXCH are handled in handleSharedATOM().
1703 if (cas
->subOp
!= NV50_IR_SUBOP_ATOM_CAS
&&
1704 cas
->subOp
!= NV50_IR_SUBOP_ATOM_EXCH
)
1706 bld
.setPosition(cas
, true);
1709 Instruction
*cctl
= bld
.mkOp1(OP_CCTL
, TYPE_NONE
, NULL
, cas
->getSrc(0));
1710 cctl
->setIndirect(0, 0, cas
->getIndirect(0, 0));
1712 cctl
->subOp
= NV50_IR_SUBOP_CCTL_IV
;
1713 if (cas
->isPredicated())
1714 cctl
->setPredicate(cas
->cc
, cas
->getPredicate());
1717 if (cas
->subOp
== NV50_IR_SUBOP_ATOM_CAS
) {
1718 // CAS is crazy. It's 2nd source is a double reg, and the 3rd source
1719 // should be set to the high part of the double reg or bad things will
1720 // happen elsewhere in the universe.
1721 // Also, it sometimes returns the new value instead of the old one
1722 // under mysterious circumstances.
1723 Value
*dreg
= bld
.getSSA(8);
1724 bld
.setPosition(cas
, false);
1725 bld
.mkOp2(OP_MERGE
, TYPE_U64
, dreg
, cas
->getSrc(1), cas
->getSrc(2));
1726 cas
->setSrc(1, dreg
);
1727 cas
->setSrc(2, dreg
);
1734 NVC0LoweringPass::loadResInfo32(Value
*ptr
, uint32_t off
, uint16_t base
)
1736 uint8_t b
= prog
->driver
->io
.auxCBSlot
;
1740 mkLoadv(TYPE_U32
, bld
.mkSymbol(FILE_MEMORY_CONST
, b
, TYPE_U32
, off
), ptr
);
1744 NVC0LoweringPass::loadResInfo64(Value
*ptr
, uint32_t off
, uint16_t base
)
1746 uint8_t b
= prog
->driver
->io
.auxCBSlot
;
1750 ptr
= bld
.mkOp2v(OP_SHL
, TYPE_U32
, bld
.getScratch(), ptr
, bld
.mkImm(4));
1753 mkLoadv(TYPE_U64
, bld
.mkSymbol(FILE_MEMORY_CONST
, b
, TYPE_U64
, off
), ptr
);
1757 NVC0LoweringPass::loadResLength32(Value
*ptr
, uint32_t off
, uint16_t base
)
1759 uint8_t b
= prog
->driver
->io
.auxCBSlot
;
1763 ptr
= bld
.mkOp2v(OP_SHL
, TYPE_U32
, bld
.getScratch(), ptr
, bld
.mkImm(4));
1766 mkLoadv(TYPE_U32
, bld
.mkSymbol(FILE_MEMORY_CONST
, b
, TYPE_U64
, off
+ 8), ptr
);
1770 NVC0LoweringPass::loadBufInfo64(Value
*ptr
, uint32_t off
)
1772 return loadResInfo64(ptr
, off
, prog
->driver
->io
.bufInfoBase
);
1776 NVC0LoweringPass::loadBufLength32(Value
*ptr
, uint32_t off
)
1778 return loadResLength32(ptr
, off
, prog
->driver
->io
.bufInfoBase
);
1782 NVC0LoweringPass::loadUboInfo64(Value
*ptr
, uint32_t off
)
1784 return loadResInfo64(ptr
, off
, prog
->driver
->io
.uboInfoBase
);
1788 NVC0LoweringPass::loadUboLength32(Value
*ptr
, uint32_t off
)
1790 return loadResLength32(ptr
, off
, prog
->driver
->io
.uboInfoBase
);
1794 NVC0LoweringPass::loadMsInfo32(Value
*ptr
, uint32_t off
)
1796 uint8_t b
= prog
->driver
->io
.msInfoCBSlot
;
1797 off
+= prog
->driver
->io
.msInfoBase
;
1799 mkLoadv(TYPE_U32
, bld
.mkSymbol(FILE_MEMORY_CONST
, b
, TYPE_U32
, off
), ptr
);
1803 NVC0LoweringPass::loadSuInfo32(Value
*ptr
, int slot
, uint32_t off
, bool bindless
)
1805 uint32_t base
= slot
* NVC0_SU_INFO__STRIDE
;
1807 // We don't upload surface info for bindless for GM107+
1808 assert(!bindless
|| targ
->getChipset() < NVISA_GM107_CHIPSET
);
1811 ptr
= bld
.mkOp2v(OP_ADD
, TYPE_U32
, bld
.getSSA(), ptr
, bld
.mkImm(slot
));
1813 ptr
= bld
.mkOp2v(OP_AND
, TYPE_U32
, bld
.getSSA(), ptr
, bld
.mkImm(511));
1815 ptr
= bld
.mkOp2v(OP_AND
, TYPE_U32
, bld
.getSSA(), ptr
, bld
.mkImm(7));
1816 ptr
= bld
.mkOp2v(OP_SHL
, TYPE_U32
, bld
.getSSA(), ptr
, bld
.mkImm(6));
1821 return loadResInfo32(ptr
, off
, bindless
? prog
->driver
->io
.bindlessBase
:
1822 prog
->driver
->io
.suInfoBase
);
1826 NVC0LoweringPass::loadMsAdjInfo32(TexInstruction::Target target
, uint32_t index
, int slot
, Value
*ind
, bool bindless
)
1828 if (!bindless
|| targ
->getChipset() < NVISA_GM107_CHIPSET
)
1829 return loadSuInfo32(ind
, slot
, NVC0_SU_INFO_MS(index
), bindless
);
1833 Value
*samples
= bld
.getSSA();
1834 // this shouldn't be lowered because it's being inserted before the current instruction
1835 TexInstruction
*tex
= new_TexInstruction(func
, OP_TXQ
);
1836 tex
->tex
.target
= target
;
1837 tex
->tex
.query
= TXQ_TYPE
;
1838 tex
->tex
.mask
= 0x4;
1841 tex
->tex
.rIndirectSrc
= 0;
1842 tex
->setDef(0, samples
);
1843 tex
->setSrc(0, ind
);
1844 tex
->setSrc(1, bld
.loadImm(NULL
, 0));
1847 // doesn't work with sample counts other than 1/2/4/8 but they aren't supported
1850 Value
*tmp
= bld
.mkOp2v(OP_ADD
, TYPE_U32
, bld
.getSSA(), samples
, bld
.mkImm(2));
1851 return bld
.mkOp2v(OP_SHR
, TYPE_U32
, bld
.getSSA(), tmp
, bld
.mkImm(2));
1854 Value
*tmp
= bld
.mkCmp(OP_SET
, CC_GT
, TYPE_U32
, bld
.getSSA(), TYPE_U32
, samples
, bld
.mkImm(2))->getDef(0);
1855 return bld
.mkOp2v(OP_AND
, TYPE_U32
, bld
.getSSA(), tmp
, bld
.mkImm(1));
1864 static inline uint16_t getSuClampSubOp(const TexInstruction
*su
, int c
)
1866 switch (su
->tex
.target
.getEnum()) {
1867 case TEX_TARGET_BUFFER
: return NV50_IR_SUBOP_SUCLAMP_PL(0, 1);
1868 case TEX_TARGET_RECT
: return NV50_IR_SUBOP_SUCLAMP_SD(0, 2);
1869 case TEX_TARGET_1D
: return NV50_IR_SUBOP_SUCLAMP_SD(0, 2);
1870 case TEX_TARGET_1D_ARRAY
: return (c
== 1) ?
1871 NV50_IR_SUBOP_SUCLAMP_PL(0, 2) :
1872 NV50_IR_SUBOP_SUCLAMP_SD(0, 2);
1873 case TEX_TARGET_2D
: return NV50_IR_SUBOP_SUCLAMP_BL(0, 2);
1874 case TEX_TARGET_2D_MS
: return NV50_IR_SUBOP_SUCLAMP_BL(0, 2);
1875 case TEX_TARGET_2D_ARRAY
: return NV50_IR_SUBOP_SUCLAMP_SD(0, 2);
1876 case TEX_TARGET_2D_MS_ARRAY
: return NV50_IR_SUBOP_SUCLAMP_SD(0, 2);
1877 case TEX_TARGET_3D
: return NV50_IR_SUBOP_SUCLAMP_SD(0, 2);
1878 case TEX_TARGET_CUBE
: return NV50_IR_SUBOP_SUCLAMP_SD(0, 2);
1879 case TEX_TARGET_CUBE_ARRAY
: return NV50_IR_SUBOP_SUCLAMP_SD(0, 2);
1887 NVC0LoweringPass::handleSUQ(TexInstruction
*suq
)
1889 int mask
= suq
->tex
.mask
;
1890 int dim
= suq
->tex
.target
.getDim();
1891 int arg
= dim
+ (suq
->tex
.target
.isArray() || suq
->tex
.target
.isCube());
1892 Value
*ind
= suq
->getIndirectR();
1893 int slot
= suq
->tex
.r
;
1896 for (c
= 0, d
= 0; c
< 3; ++c
, mask
>>= 1) {
1897 if (c
>= arg
|| !(mask
& 1))
1902 if (c
== 1 && suq
->tex
.target
== TEX_TARGET_1D_ARRAY
) {
1903 offset
= NVC0_SU_INFO_SIZE(2);
1905 offset
= NVC0_SU_INFO_SIZE(c
);
1907 bld
.mkMov(suq
->getDef(d
++), loadSuInfo32(ind
, slot
, offset
, suq
->tex
.bindless
));
1908 if (c
== 2 && suq
->tex
.target
.isCube())
1909 bld
.mkOp2(OP_DIV
, TYPE_U32
, suq
->getDef(d
- 1), suq
->getDef(d
- 1),
1910 bld
.loadImm(NULL
, 6));
1914 if (suq
->tex
.target
.isMS()) {
1915 Value
*ms_x
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_MS(0), suq
->tex
.bindless
);
1916 Value
*ms_y
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_MS(1), suq
->tex
.bindless
);
1917 Value
*ms
= bld
.mkOp2v(OP_ADD
, TYPE_U32
, bld
.getScratch(), ms_x
, ms_y
);
1918 bld
.mkOp2(OP_SHL
, TYPE_U32
, suq
->getDef(d
++), bld
.loadImm(NULL
, 1), ms
);
1920 bld
.mkMov(suq
->getDef(d
++), bld
.loadImm(NULL
, 1));
1929 NVC0LoweringPass::adjustCoordinatesMS(TexInstruction
*tex
)
1931 const int arg
= tex
->tex
.target
.getArgCount();
1932 int slot
= tex
->tex
.r
;
1934 if (tex
->tex
.target
== TEX_TARGET_2D_MS
)
1935 tex
->tex
.target
= TEX_TARGET_2D
;
1937 if (tex
->tex
.target
== TEX_TARGET_2D_MS_ARRAY
)
1938 tex
->tex
.target
= TEX_TARGET_2D_ARRAY
;
1942 Value
*x
= tex
->getSrc(0);
1943 Value
*y
= tex
->getSrc(1);
1944 Value
*s
= tex
->getSrc(arg
- 1);
1946 Value
*tx
= bld
.getSSA(), *ty
= bld
.getSSA(), *ts
= bld
.getSSA();
1947 Value
*ind
= tex
->getIndirectR();
1949 Value
*ms_x
= loadMsAdjInfo32(tex
->tex
.target
, 0, slot
, ind
, tex
->tex
.bindless
);
1950 Value
*ms_y
= loadMsAdjInfo32(tex
->tex
.target
, 1, slot
, ind
, tex
->tex
.bindless
);
1952 bld
.mkOp2(OP_SHL
, TYPE_U32
, tx
, x
, ms_x
);
1953 bld
.mkOp2(OP_SHL
, TYPE_U32
, ty
, y
, ms_y
);
1955 s
= bld
.mkOp2v(OP_AND
, TYPE_U32
, ts
, s
, bld
.loadImm(NULL
, 0x7));
1956 s
= bld
.mkOp2v(OP_SHL
, TYPE_U32
, ts
, ts
, bld
.mkImm(3));
1958 Value
*dx
= loadMsInfo32(ts
, 0x0);
1959 Value
*dy
= loadMsInfo32(ts
, 0x4);
1961 bld
.mkOp2(OP_ADD
, TYPE_U32
, tx
, tx
, dx
);
1962 bld
.mkOp2(OP_ADD
, TYPE_U32
, ty
, ty
, dy
);
1966 tex
->moveSources(arg
, -1);
1969 // Sets 64-bit "generic address", predicate and format sources for SULD/SUST.
1970 // They're computed from the coordinates using the surface info in c[] space.
1972 NVC0LoweringPass::processSurfaceCoordsNVE4(TexInstruction
*su
)
1975 const bool atom
= su
->op
== OP_SUREDB
|| su
->op
== OP_SUREDP
;
1977 su
->op
== OP_SULDB
|| su
->op
== OP_SUSTB
|| su
->op
== OP_SUREDB
;
1978 const int slot
= su
->tex
.r
;
1979 const int dim
= su
->tex
.target
.getDim();
1980 const bool array
= su
->tex
.target
.isArray() || su
->tex
.target
.isCube();
1981 const int arg
= dim
+ array
;
1983 Value
*zero
= bld
.mkImm(0);
1987 Value
*bf
, *eau
, *off
;
1989 Value
*ind
= su
->getIndirectR();
1992 off
= bld
.getScratch(4);
1993 bf
= bld
.getScratch(4);
1994 addr
= bld
.getSSA(8);
1995 pred
= bld
.getScratch(1, FILE_PREDICATE
);
1997 bld
.setPosition(su
, false);
1999 adjustCoordinatesMS(su
);
2001 // calculate clamped coordinates
2002 for (c
= 0; c
< arg
; ++c
) {
2005 if (c
== 1 && su
->tex
.target
== TEX_TARGET_1D_ARRAY
) {
2006 // The array index is stored in the Z component for 1D arrays.
2010 src
[c
] = bld
.getScratch();
2012 v
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_RAW_X
, su
->tex
.bindless
);
2014 v
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_DIM(dimc
), su
->tex
.bindless
);
2015 bld
.mkOp3(OP_SUCLAMP
, TYPE_S32
, src
[c
], su
->getSrc(c
), v
, zero
)
2016 ->subOp
= getSuClampSubOp(su
, dimc
);
2021 if (dim
== 2 && !array
) {
2022 v
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_UNK1C
, su
->tex
.bindless
);
2023 src
[2] = bld
.mkOp2v(OP_SHR
, TYPE_U32
, bld
.getSSA(),
2024 v
, bld
.loadImm(NULL
, 16));
2026 v
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_DIM(2), su
->tex
.bindless
);
2027 bld
.mkOp3(OP_SUCLAMP
, TYPE_S32
, src
[2], src
[2], v
, zero
)
2028 ->subOp
= NV50_IR_SUBOP_SUCLAMP_SD(0, 2);
2031 // set predicate output
2032 if (su
->tex
.target
== TEX_TARGET_BUFFER
) {
2033 src
[0]->getInsn()->setFlagsDef(1, pred
);
2036 p1
= bld
.getSSA(1, FILE_PREDICATE
);
2037 src
[dim
]->getInsn()->setFlagsDef(1, p1
);
2040 // calculate pixel offset
2043 if (su
->tex
.target
!= TEX_TARGET_BUFFER
)
2044 bld
.mkOp2(OP_AND
, TYPE_U32
, off
, src
[0], bld
.loadImm(NULL
, 0xffff));
2049 v
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_UNK1C
, su
->tex
.bindless
);
2050 bld
.mkOp3(OP_MADSP
, TYPE_U32
, off
, src
[2], v
, src
[1])
2051 ->subOp
= NV50_IR_SUBOP_MADSP(4,4,8); // u16l u16l u16l
2053 v
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_PITCH
, su
->tex
.bindless
);
2054 bld
.mkOp3(OP_MADSP
, TYPE_U32
, off
, off
, v
, src
[0])
2056 NV50_IR_SUBOP_MADSP_SD
: NV50_IR_SUBOP_MADSP(0,2,8); // u32 u16l u16l
2059 // calculate effective address part 1
2060 if (su
->tex
.target
== TEX_TARGET_BUFFER
) {
2064 v
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_FMT
, su
->tex
.bindless
);
2065 bld
.mkOp3(OP_VSHL
, TYPE_U32
, bf
, src
[0], v
, zero
)
2066 ->subOp
= NV50_IR_SUBOP_V1(7,6,8|2);
2078 subOp
= NV50_IR_SUBOP_SUBFM_3D
;
2082 subOp
= NV50_IR_SUBOP_SUBFM_3D
;
2086 insn
= bld
.mkOp3(OP_SUBFM
, TYPE_U32
, bf
, src
[0], y
, z
);
2087 insn
->subOp
= subOp
;
2088 insn
->setFlagsDef(1, pred
);
2092 v
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_ADDR
, su
->tex
.bindless
);
2094 if (su
->tex
.target
== TEX_TARGET_BUFFER
) {
2097 eau
= bld
.mkOp3v(OP_SUEAU
, TYPE_U32
, bld
.getScratch(4), off
, bf
, v
);
2099 // add array layer offset
2101 v
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_ARRAY
, su
->tex
.bindless
);
2103 bld
.mkOp3(OP_MADSP
, TYPE_U32
, eau
, src
[1], v
, eau
)
2104 ->subOp
= NV50_IR_SUBOP_MADSP(4,0,0); // u16 u24 u32
2106 bld
.mkOp3(OP_MADSP
, TYPE_U32
, eau
, v
, src
[2], eau
)
2107 ->subOp
= NV50_IR_SUBOP_MADSP(0,0,0); // u32 u24 u32
2108 // combine predicates
2110 bld
.mkOp2(OP_OR
, TYPE_U8
, pred
, pred
, p1
);
2115 if (su
->tex
.target
== TEX_TARGET_BUFFER
) {
2119 // bf == g[] address & 0xff
2120 // eau == g[] address >> 8
2121 bld
.mkOp3(OP_PERMT
, TYPE_U32
, bf
, lo
, bld
.loadImm(NULL
, 0x6540), eau
);
2122 bld
.mkOp3(OP_PERMT
, TYPE_U32
, eau
, zero
, bld
.loadImm(NULL
, 0x0007), eau
);
2124 if (su
->op
== OP_SULDP
&& su
->tex
.target
== TEX_TARGET_BUFFER
) {
2125 // Convert from u32 to u8 address format, which is what the library code
2126 // doing SULDP currently uses.
2127 // XXX: can SUEAU do this ?
2128 // XXX: does it matter that we don't mask high bytes in bf ?
2130 bld
.mkOp2(OP_SHR
, TYPE_U32
, off
, bf
, bld
.mkImm(8));
2131 bld
.mkOp2(OP_ADD
, TYPE_U32
, eau
, eau
, off
);
2134 bld
.mkOp2(OP_MERGE
, TYPE_U64
, addr
, bf
, eau
);
2136 if (atom
&& su
->tex
.target
== TEX_TARGET_BUFFER
)
2137 bld
.mkOp2(OP_ADD
, TYPE_U64
, addr
, addr
, off
);
2139 // let's just set it 0 for raw access and hope it works
2141 bld
.mkImm(0) : loadSuInfo32(ind
, slot
, NVC0_SU_INFO_FMT
, su
->tex
.bindless
);
2143 // get rid of old coordinate sources, make space for fmt info and predicate
2144 su
->moveSources(arg
, 3 - arg
);
2145 // set 64 bit address and 32-bit format sources
2146 su
->setSrc(0, addr
);
2148 su
->setSrc(2, pred
);
2149 su
->setIndirectR(NULL
);
2151 // prevent read fault when the image is not actually bound
2152 CmpInstruction
*pred1
=
2153 bld
.mkCmp(OP_SET
, CC_EQ
, TYPE_U32
, bld
.getSSA(1, FILE_PREDICATE
),
2154 TYPE_U32
, bld
.mkImm(0),
2155 loadSuInfo32(ind
, slot
, NVC0_SU_INFO_ADDR
, su
->tex
.bindless
));
2157 if (su
->op
!= OP_SUSTP
&& su
->tex
.format
) {
2158 const TexInstruction::ImgFormatDesc
*format
= su
->tex
.format
;
2159 int blockwidth
= format
->bits
[0] + format
->bits
[1] +
2160 format
->bits
[2] + format
->bits
[3];
2162 // make sure that the format doesn't mismatch
2163 assert(format
->components
!= 0);
2164 bld
.mkCmp(OP_SET_OR
, CC_NE
, TYPE_U32
, pred1
->getDef(0),
2165 TYPE_U32
, bld
.loadImm(NULL
, blockwidth
/ 8),
2166 loadSuInfo32(ind
, slot
, NVC0_SU_INFO_BSIZE
, su
->tex
.bindless
),
2169 su
->setPredicate(CC_NOT_P
, pred1
->getDef(0));
2171 // TODO: initialize def values to 0 when the surface operation is not
2172 // performed (not needed for stores). Also, fix the "address bounds test"
2173 // subtests from arb_shader_image_load_store-invalid for buffers, because it
2174 // seems like that the predicate is not correctly set by suclamp.
2178 getSrcType(const TexInstruction::ImgFormatDesc
*t
, int c
)
2181 case FLOAT
: return t
->bits
[c
] == 16 ? TYPE_F16
: TYPE_F32
;
2182 case UNORM
: return t
->bits
[c
] == 8 ? TYPE_U8
: TYPE_U16
;
2183 case SNORM
: return t
->bits
[c
] == 8 ? TYPE_S8
: TYPE_S16
;
2185 return (t
->bits
[c
] == 8 ? TYPE_U8
:
2186 (t
->bits
[c
] == 16 ? TYPE_U16
: TYPE_U32
));
2188 return (t
->bits
[c
] == 8 ? TYPE_S8
:
2189 (t
->bits
[c
] == 16 ? TYPE_S16
: TYPE_S32
));
2195 getDestType(const ImgType type
) {
2206 assert(!"Impossible type");
2212 NVC0LoweringPass::convertSurfaceFormat(TexInstruction
*su
, Instruction
**loaded
)
2214 const TexInstruction::ImgFormatDesc
*format
= su
->tex
.format
;
2215 int width
= format
->bits
[0] + format
->bits
[1] +
2216 format
->bits
[2] + format
->bits
[3];
2217 Value
*untypedDst
[4] = {};
2218 Value
*typedDst
[4] = {};
2220 // We must convert this to a generic load.
2223 su
->dType
= typeOfSize(width
/ 8);
2224 su
->sType
= TYPE_U8
;
2226 for (int i
= 0; i
< width
/ 32; i
++)
2227 untypedDst
[i
] = bld
.getSSA();
2229 untypedDst
[0] = bld
.getSSA();
2231 if (loaded
&& loaded
[0]) {
2232 for (int i
= 0; i
< 4; i
++) {
2234 typedDst
[i
] = loaded
[i
]->getDef(0);
2237 for (int i
= 0; i
< 4; i
++) {
2238 typedDst
[i
] = su
->getDef(i
);
2242 // Set the untyped dsts as the su's destinations
2243 if (loaded
&& loaded
[0]) {
2244 for (int i
= 0; i
< 4; i
++)
2246 loaded
[i
]->setDef(0, untypedDst
[i
]);
2248 for (int i
= 0; i
< 4; i
++)
2249 su
->setDef(i
, untypedDst
[i
]);
2251 bld
.setPosition(su
, true);
2254 // Unpack each component into the typed dsts
2256 for (int i
= 0; i
< 4; bits
+= format
->bits
[i
], i
++) {
2260 if (loaded
&& loaded
[0])
2261 bld
.setPosition(loaded
[i
], true);
2263 if (i
>= format
->components
) {
2264 if (format
->type
== FLOAT
||
2265 format
->type
== UNORM
||
2266 format
->type
== SNORM
)
2267 bld
.loadImm(typedDst
[i
], i
== 3 ? 1.0f
: 0.0f
);
2269 bld
.loadImm(typedDst
[i
], i
== 3 ? 1 : 0);
2273 // Get just that component's data into the relevant place
2274 if (format
->bits
[i
] == 32)
2275 bld
.mkMov(typedDst
[i
], untypedDst
[i
]);
2276 else if (format
->bits
[i
] == 16)
2277 bld
.mkCvt(OP_CVT
, getDestType(format
->type
), typedDst
[i
],
2278 getSrcType(format
, i
), untypedDst
[i
/ 2])
2279 ->subOp
= (i
& 1) << (format
->type
== FLOAT
? 0 : 1);
2280 else if (format
->bits
[i
] == 8)
2281 bld
.mkCvt(OP_CVT
, getDestType(format
->type
), typedDst
[i
],
2282 getSrcType(format
, i
), untypedDst
[0])->subOp
= i
;
2284 bld
.mkOp2(OP_EXTBF
, TYPE_U32
, typedDst
[i
], untypedDst
[bits
/ 32],
2285 bld
.mkImm((bits
% 32) | (format
->bits
[i
] << 8)));
2286 if (format
->type
== UNORM
|| format
->type
== SNORM
)
2287 bld
.mkCvt(OP_CVT
, TYPE_F32
, typedDst
[i
], getSrcType(format
, i
), typedDst
[i
]);
2290 // Normalize / convert as necessary
2291 if (format
->type
== UNORM
)
2292 bld
.mkOp2(OP_MUL
, TYPE_F32
, typedDst
[i
], typedDst
[i
], bld
.loadImm(NULL
, 1.0f
/ ((1 << format
->bits
[i
]) - 1)));
2293 else if (format
->type
== SNORM
)
2294 bld
.mkOp2(OP_MUL
, TYPE_F32
, typedDst
[i
], typedDst
[i
], bld
.loadImm(NULL
, 1.0f
/ ((1 << (format
->bits
[i
] - 1)) - 1)));
2295 else if (format
->type
== FLOAT
&& format
->bits
[i
] < 16) {
2296 bld
.mkOp2(OP_SHL
, TYPE_U32
, typedDst
[i
], typedDst
[i
], bld
.loadImm(NULL
, 15 - format
->bits
[i
]));
2297 bld
.mkCvt(OP_CVT
, TYPE_F32
, typedDst
[i
], TYPE_F16
, typedDst
[i
]);
2302 std::swap(typedDst
[0], typedDst
[2]);
2307 NVC0LoweringPass::insertOOBSurfaceOpResult(TexInstruction
*su
)
2309 if (!su
->getPredicate())
2312 bld
.setPosition(su
, true);
2314 for (unsigned i
= 0; su
->defExists(i
); ++i
) {
2315 ValueDef
&def
= su
->def(i
);
2317 Instruction
*mov
= bld
.mkMov(bld
.getSSA(), bld
.loadImm(NULL
, 0));
2318 assert(su
->cc
== CC_NOT_P
);
2319 mov
->setPredicate(CC_P
, su
->getPredicate());
2320 Instruction
*uni
= bld
.mkOp2(OP_UNION
, TYPE_U32
, bld
.getSSA(), NULL
, mov
->getDef(0));
2322 def
.replace(uni
->getDef(0), false);
2323 uni
->setSrc(0, def
.get());
2328 NVC0LoweringPass::handleSurfaceOpNVE4(TexInstruction
*su
)
2330 processSurfaceCoordsNVE4(su
);
2332 if (su
->op
== OP_SULDP
) {
2333 convertSurfaceFormat(su
, NULL
);
2334 insertOOBSurfaceOpResult(su
);
2337 if (su
->op
== OP_SUREDB
|| su
->op
== OP_SUREDP
) {
2338 assert(su
->getPredicate());
2340 bld
.mkOp2v(OP_OR
, TYPE_U8
, bld
.getScratch(1, FILE_PREDICATE
),
2341 su
->getPredicate(), su
->getSrc(2));
2343 Instruction
*red
= bld
.mkOp(OP_ATOM
, su
->dType
, bld
.getSSA());
2344 red
->subOp
= su
->subOp
;
2345 red
->setSrc(0, bld
.mkSymbol(FILE_MEMORY_GLOBAL
, 0, TYPE_U32
, 0));
2346 red
->setSrc(1, su
->getSrc(3));
2347 if (su
->subOp
== NV50_IR_SUBOP_ATOM_CAS
)
2348 red
->setSrc(2, su
->getSrc(4));
2349 red
->setIndirect(0, 0, su
->getSrc(0));
2351 // make sure to initialize dst value when the atomic operation is not
2353 Instruction
*mov
= bld
.mkMov(bld
.getSSA(), bld
.loadImm(NULL
, 0));
2355 assert(su
->cc
== CC_NOT_P
);
2356 red
->setPredicate(su
->cc
, pred
);
2357 mov
->setPredicate(CC_P
, pred
);
2359 bld
.mkOp2(OP_UNION
, TYPE_U32
, su
->getDef(0),
2360 red
->getDef(0), mov
->getDef(0));
2362 delete_Instruction(bld
.getProgram(), su
);
2363 handleCasExch(red
, true);
2366 if (su
->op
== OP_SUSTB
|| su
->op
== OP_SUSTP
)
2367 su
->sType
= (su
->tex
.target
== TEX_TARGET_BUFFER
) ? TYPE_U32
: TYPE_U8
;
2371 NVC0LoweringPass::processSurfaceCoordsNVC0(TexInstruction
*su
)
2373 const int slot
= su
->tex
.r
;
2374 const int dim
= su
->tex
.target
.getDim();
2375 const int arg
= dim
+ (su
->tex
.target
.isArray() || su
->tex
.target
.isCube());
2377 Value
*zero
= bld
.mkImm(0);
2380 Value
*ind
= su
->getIndirectR();
2382 bld
.setPosition(su
, false);
2384 adjustCoordinatesMS(su
);
2388 ptr
= bld
.mkOp2v(OP_ADD
, TYPE_U32
, bld
.getSSA(), ind
, bld
.mkImm(su
->tex
.r
));
2389 ptr
= bld
.mkOp2v(OP_AND
, TYPE_U32
, bld
.getSSA(), ptr
, bld
.mkImm(7));
2390 su
->setIndirectR(ptr
);
2393 // get surface coordinates
2394 for (c
= 0; c
< arg
; ++c
)
2395 src
[c
] = su
->getSrc(c
);
2399 // calculate pixel offset
2400 if (su
->op
== OP_SULDP
|| su
->op
== OP_SUREDP
) {
2401 v
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_BSIZE
, su
->tex
.bindless
);
2402 su
->setSrc(0, bld
.mkOp2v(OP_MUL
, TYPE_U32
, bld
.getSSA(), src
[0], v
));
2405 // add array layer offset
2406 if (su
->tex
.target
.isArray() || su
->tex
.target
.isCube()) {
2407 v
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_ARRAY
, su
->tex
.bindless
);
2409 su
->setSrc(2, bld
.mkOp2v(OP_MUL
, TYPE_U32
, bld
.getSSA(), src
[2], v
));
2412 // prevent read fault when the image is not actually bound
2413 CmpInstruction
*pred
=
2414 bld
.mkCmp(OP_SET
, CC_EQ
, TYPE_U32
, bld
.getSSA(1, FILE_PREDICATE
),
2415 TYPE_U32
, bld
.mkImm(0),
2416 loadSuInfo32(ind
, slot
, NVC0_SU_INFO_ADDR
, su
->tex
.bindless
));
2417 if (su
->op
!= OP_SUSTP
&& su
->tex
.format
) {
2418 const TexInstruction::ImgFormatDesc
*format
= su
->tex
.format
;
2419 int blockwidth
= format
->bits
[0] + format
->bits
[1] +
2420 format
->bits
[2] + format
->bits
[3];
2422 assert(format
->components
!= 0);
2423 // make sure that the format doesn't mismatch when it's not FMT_NONE
2424 bld
.mkCmp(OP_SET_OR
, CC_NE
, TYPE_U32
, pred
->getDef(0),
2425 TYPE_U32
, bld
.loadImm(NULL
, blockwidth
/ 8),
2426 loadSuInfo32(ind
, slot
, NVC0_SU_INFO_BSIZE
, su
->tex
.bindless
),
2429 su
->setPredicate(CC_NOT_P
, pred
->getDef(0));
2433 NVC0LoweringPass::handleSurfaceOpNVC0(TexInstruction
*su
)
2435 if (su
->tex
.target
== TEX_TARGET_1D_ARRAY
) {
2436 /* As 1d arrays also need 3 coordinates, switching to TEX_TARGET_2D_ARRAY
2437 * will simplify the lowering pass and the texture constraints. */
2438 su
->moveSources(1, 1);
2439 su
->setSrc(1, bld
.loadImm(NULL
, 0));
2440 su
->tex
.target
= TEX_TARGET_2D_ARRAY
;
2443 processSurfaceCoordsNVC0(su
);
2445 if (su
->op
== OP_SULDP
) {
2446 convertSurfaceFormat(su
, NULL
);
2447 insertOOBSurfaceOpResult(su
);
2450 if (su
->op
== OP_SUREDB
|| su
->op
== OP_SUREDP
) {
2451 const int dim
= su
->tex
.target
.getDim();
2452 const int arg
= dim
+ (su
->tex
.target
.isArray() || su
->tex
.target
.isCube());
2453 LValue
*addr
= bld
.getSSA(8);
2454 Value
*def
= su
->getDef(0);
2458 // Set the destination to the address
2459 su
->dType
= TYPE_U64
;
2460 su
->setDef(0, addr
);
2461 su
->setDef(1, su
->getPredicate());
2463 bld
.setPosition(su
, true);
2465 // Perform the atomic op
2466 Instruction
*red
= bld
.mkOp(OP_ATOM
, su
->sType
, bld
.getSSA());
2467 red
->subOp
= su
->subOp
;
2468 red
->setSrc(0, bld
.mkSymbol(FILE_MEMORY_GLOBAL
, 0, su
->sType
, 0));
2469 red
->setSrc(1, su
->getSrc(arg
));
2470 if (red
->subOp
== NV50_IR_SUBOP_ATOM_CAS
)
2471 red
->setSrc(2, su
->getSrc(arg
+ 1));
2472 red
->setIndirect(0, 0, addr
);
2474 // make sure to initialize dst value when the atomic operation is not
2476 Instruction
*mov
= bld
.mkMov(bld
.getSSA(), bld
.loadImm(NULL
, 0));
2478 assert(su
->cc
== CC_NOT_P
);
2479 red
->setPredicate(su
->cc
, su
->getPredicate());
2480 mov
->setPredicate(CC_P
, su
->getPredicate());
2482 bld
.mkOp2(OP_UNION
, TYPE_U32
, def
, red
->getDef(0), mov
->getDef(0));
2484 handleCasExch(red
, false);
2489 NVC0LoweringPass::processSurfaceCoordsGM107(TexInstruction
*su
, Instruction
*ret
[4])
2491 const int slot
= su
->tex
.r
;
2492 const int dim
= su
->tex
.target
.getDim();
2493 const bool array
= su
->tex
.target
.isArray() || su
->tex
.target
.isCube();
2494 const int arg
= dim
+ array
;
2495 Value
*ind
= su
->getIndirectR();
2497 Instruction
*pred
= NULL
, *pred2d
= NULL
;
2500 bld
.setPosition(su
, false);
2502 adjustCoordinatesMS(su
);
2504 // add texture handle
2510 pos
= (su
->subOp
== NV50_IR_SUBOP_ATOM_CAS
) ? 2 : 1;
2517 if (dim
== 2 && !array
) {
2518 // This might be a 2d slice of a 3d texture, try to load the z
2521 if (!su
->tex
.bindless
)
2522 v
= loadSuInfo32(ind
, slot
, NVC0_SU_INFO_UNK1C
, su
->tex
.bindless
);
2524 v
= bld
.mkOp2v(OP_SHR
, TYPE_U32
, bld
.getSSA(), ind
, bld
.mkImm(11));
2525 Value
*is_3d
= bld
.mkOp2v(OP_AND
, TYPE_U32
, bld
.getSSA(), v
, bld
.mkImm(1));
2526 pred2d
= bld
.mkCmp(OP_SET
, CC_EQ
, TYPE_U32
, bld
.getSSA(1, FILE_PREDICATE
),
2527 TYPE_U32
, bld
.mkImm(0), is_3d
);
2529 bld
.mkOp2(OP_SHR
, TYPE_U32
, v
, v
, bld
.loadImm(NULL
, 16));
2530 su
->moveSources(dim
, 1);
2532 su
->tex
.target
= nv50_ir::TEX_TARGET_3D
;
2536 if (su
->tex
.bindless
)
2537 handle
= bld
.mkOp2v(OP_AND
, TYPE_U32
, bld
.getSSA(), ind
, bld
.mkImm(2047));
2539 handle
= loadTexHandle(ind
, slot
+ 32);
2541 su
->setSrc(arg
+ pos
, handle
);
2543 // The address check doesn't make sense here. The format check could make
2544 // sense but it's a bit of a pain.
2545 if (!su
->tex
.bindless
) {
2546 // prevent read fault when the image is not actually bound
2548 bld
.mkCmp(OP_SET
, CC_EQ
, TYPE_U32
, bld
.getSSA(1, FILE_PREDICATE
),
2549 TYPE_U32
, bld
.mkImm(0),
2550 loadSuInfo32(ind
, slot
, NVC0_SU_INFO_ADDR
, su
->tex
.bindless
));
2551 if (su
->op
!= OP_SUSTP
&& su
->tex
.format
) {
2552 const TexInstruction::ImgFormatDesc
*format
= su
->tex
.format
;
2553 int blockwidth
= format
->bits
[0] + format
->bits
[1] +
2554 format
->bits
[2] + format
->bits
[3];
2556 assert(format
->components
!= 0);
2557 // make sure that the format doesn't mismatch when it's not FMT_NONE
2558 bld
.mkCmp(OP_SET_OR
, CC_NE
, TYPE_U32
, pred
->getDef(0),
2559 TYPE_U32
, bld
.loadImm(NULL
, blockwidth
/ 8),
2560 loadSuInfo32(ind
, slot
, NVC0_SU_INFO_BSIZE
, su
->tex
.bindless
),
2565 // Now we have "pred" which (optionally) contains whether to do the surface
2566 // op at all, and a "pred2d" which indicates that, in case of doing the
2567 // surface op, we have to create a 2d and 3d version, conditioned on pred2d.
2568 TexInstruction
*su2d
= NULL
;
2570 su2d
= cloneForward(func
, su
)->asTex();
2571 for (unsigned i
= 0; su
->defExists(i
); ++i
)
2572 su2d
->setDef(i
, bld
.getSSA());
2573 su2d
->moveSources(dim
+ 1, -1);
2574 su2d
->tex
.target
= nv50_ir::TEX_TARGET_2D
;
2576 if (pred2d
&& pred
) {
2577 Instruction
*pred3d
= bld
.mkOp2(OP_AND
, TYPE_U8
,
2578 bld
.getSSA(1, FILE_PREDICATE
),
2579 pred
->getDef(0), pred2d
->getDef(0));
2580 pred3d
->src(0).mod
= Modifier(NV50_IR_MOD_NOT
);
2581 pred3d
->src(1).mod
= Modifier(NV50_IR_MOD_NOT
);
2582 su
->setPredicate(CC_P
, pred3d
->getDef(0));
2583 pred2d
= bld
.mkOp2(OP_AND
, TYPE_U8
, bld
.getSSA(1, FILE_PREDICATE
),
2584 pred
->getDef(0), pred2d
->getDef(0));
2585 pred2d
->src(0).mod
= Modifier(NV50_IR_MOD_NOT
);
2587 su
->setPredicate(CC_NOT_P
, pred
->getDef(0));
2588 } else if (pred2d
) {
2589 su
->setPredicate(CC_NOT_P
, pred2d
->getDef(0));
2592 su2d
->setPredicate(CC_P
, pred2d
->getDef(0));
2595 // Create a UNION so that RA assigns the same registers
2596 bld
.setPosition(su
, true);
2597 for (unsigned i
= 0; su
->defExists(i
); ++i
) {
2600 ValueDef
&def
= su
->def(i
);
2601 ValueDef
&def2
= su2d
->def(i
);
2602 Instruction
*mov
= NULL
;
2605 mov
= bld
.mkMov(bld
.getSSA(), bld
.loadImm(NULL
, 0));
2606 mov
->setPredicate(CC_P
, pred
->getDef(0));
2609 Instruction
*uni
= ret
[i
] = bld
.mkOp2(OP_UNION
, TYPE_U32
,
2612 def
.replace(uni
->getDef(0), false);
2613 uni
->setSrc(0, def
.get());
2615 uni
->setSrc(2, mov
->getDef(0));
2618 // Create a UNION so that RA assigns the same registers
2619 bld
.setPosition(su
, true);
2620 for (unsigned i
= 0; su
->defExists(i
); ++i
) {
2623 ValueDef
&def
= su
->def(i
);
2625 Instruction
*mov
= bld
.mkMov(bld
.getSSA(), bld
.loadImm(NULL
, 0));
2626 mov
->setPredicate(CC_P
, pred
->getDef(0));
2628 Instruction
*uni
= ret
[i
] = bld
.mkOp2(OP_UNION
, TYPE_U32
,
2630 NULL
, mov
->getDef(0));
2631 def
.replace(uni
->getDef(0), false);
2632 uni
->setSrc(0, def
.get());
2640 NVC0LoweringPass::handleSurfaceOpGM107(TexInstruction
*su
)
2642 // processSurfaceCoords also takes care of fixing up the outputs and
2643 // union'ing them with 0 as necessary. Additionally it may create a second
2644 // surface which needs some of the similar fixups.
2646 Instruction
*loaded
[4] = {};
2647 TexInstruction
*su2
= processSurfaceCoordsGM107(su
, loaded
);
2649 if (su
->op
== OP_SULDP
) {
2650 convertSurfaceFormat(su
, loaded
);
2653 if (su
->op
== OP_SUREDP
) {
2657 // If we fixed up the type of the regular surface load instruction, we also
2658 // have to fix up the copy.
2661 su2
->dType
= su
->dType
;
2662 su2
->sType
= su
->sType
;
2667 NVC0LoweringPass::handleWRSV(Instruction
*i
)
2673 // must replace, $sreg are not writeable
2674 addr
= targ
->getSVAddress(FILE_SHADER_OUTPUT
, i
->getSrc(0)->asSym());
2677 sym
= bld
.mkSymbol(FILE_SHADER_OUTPUT
, 0, i
->sType
, addr
);
2679 st
= bld
.mkStore(OP_EXPORT
, i
->dType
, sym
, i
->getIndirect(0, 0),
2681 st
->perPatch
= i
->perPatch
;
2683 bld
.getBB()->remove(i
);
2688 NVC0LoweringPass::handleLDST(Instruction
*i
)
2690 if (i
->src(0).getFile() == FILE_SHADER_INPUT
) {
2691 if (prog
->getType() == Program::TYPE_COMPUTE
) {
2692 i
->getSrc(0)->reg
.file
= FILE_MEMORY_CONST
;
2693 i
->getSrc(0)->reg
.fileIndex
= 0;
2695 if (prog
->getType() == Program::TYPE_GEOMETRY
&&
2696 i
->src(0).isIndirect(0)) {
2697 // XXX: this assumes vec4 units
2698 Value
*ptr
= bld
.mkOp2v(OP_SHL
, TYPE_U32
, bld
.getSSA(),
2699 i
->getIndirect(0, 0), bld
.mkImm(4));
2700 i
->setIndirect(0, 0, ptr
);
2704 assert(prog
->getType() != Program::TYPE_FRAGMENT
); // INTERP
2706 } else if (i
->src(0).getFile() == FILE_MEMORY_CONST
) {
2707 int8_t fileIndex
= i
->getSrc(0)->reg
.fileIndex
- 1;
2708 Value
*ind
= i
->getIndirect(0, 1);
2710 if (targ
->getChipset() >= NVISA_GK104_CHIPSET
&&
2711 prog
->getType() == Program::TYPE_COMPUTE
&&
2712 (fileIndex
>= 6 || ind
)) {
2713 // The launch descriptor only allows to set up 8 CBs, but OpenGL
2714 // requires at least 12 UBOs. To bypass this limitation, for constant
2715 // buffers 7+, we store the addrs into the driver constbuf and we
2716 // directly load from the global memory.
2718 // Clamp the UBO index when an indirect access is used to avoid
2719 // loading information from the wrong place in the driver cb.
2720 // TODO - synchronize the max with the driver.
2721 ind
= bld
.mkOp2v(OP_MIN
, TYPE_U32
, bld
.getSSA(),
2722 bld
.mkOp2v(OP_ADD
, TYPE_U32
, bld
.getSSA(),
2723 ind
, bld
.loadImm(NULL
, fileIndex
)),
2724 bld
.loadImm(NULL
, 13));
2728 Value
*offset
= bld
.loadImm(NULL
, i
->getSrc(0)->reg
.data
.offset
+ typeSizeof(i
->sType
));
2729 Value
*ptr
= loadUboInfo64(ind
, fileIndex
* 16);
2730 Value
*length
= loadUboLength32(ind
, fileIndex
* 16);
2731 Value
*pred
= new_LValue(func
, FILE_PREDICATE
);
2732 if (i
->src(0).isIndirect(0)) {
2733 bld
.mkOp2(OP_ADD
, TYPE_U64
, ptr
, ptr
, i
->getIndirect(0, 0));
2734 bld
.mkOp2(OP_ADD
, TYPE_U32
, offset
, offset
, i
->getIndirect(0, 0));
2736 i
->getSrc(0)->reg
.file
= FILE_MEMORY_GLOBAL
;
2737 i
->setIndirect(0, 1, NULL
);
2738 i
->setIndirect(0, 0, ptr
);
2739 bld
.mkCmp(OP_SET
, CC_GT
, TYPE_U32
, pred
, TYPE_U32
, offset
, length
);
2740 i
->setPredicate(CC_NOT_P
, pred
);
2741 Value
*zero
, *dst
= i
->getDef(0);
2742 i
->setDef(0, bld
.getSSA());
2744 bld
.setPosition(i
, true);
2745 bld
.mkMov((zero
= bld
.getSSA()), bld
.mkImm(0))
2746 ->setPredicate(CC_P
, pred
);
2747 bld
.mkOp2(OP_UNION
, TYPE_U32
, dst
, i
->getDef(0), zero
);
2748 } else if (i
->src(0).isIndirect(1)) {
2750 if (i
->src(0).isIndirect(0))
2751 ptr
= bld
.mkOp3v(OP_INSBF
, TYPE_U32
, bld
.getSSA(),
2752 i
->getIndirect(0, 1), bld
.mkImm(0x1010),
2753 i
->getIndirect(0, 0));
2755 ptr
= bld
.mkOp2v(OP_SHL
, TYPE_U32
, bld
.getSSA(),
2756 i
->getIndirect(0, 1), bld
.mkImm(16));
2757 i
->setIndirect(0, 1, NULL
);
2758 i
->setIndirect(0, 0, ptr
);
2759 i
->subOp
= NV50_IR_SUBOP_LDC_IS
;
2761 } else if (i
->src(0).getFile() == FILE_SHADER_OUTPUT
) {
2762 assert(prog
->getType() == Program::TYPE_TESSELLATION_CONTROL
);
2764 } else if (i
->src(0).getFile() == FILE_MEMORY_BUFFER
) {
2765 Value
*ind
= i
->getIndirect(0, 1);
2766 Value
*ptr
= loadBufInfo64(ind
, i
->getSrc(0)->reg
.fileIndex
* 16);
2767 // XXX come up with a way not to do this for EVERY little access but
2768 // rather to batch these up somehow. Unfortunately we've lost the
2769 // information about the field width by the time we get here.
2770 Value
*offset
= bld
.loadImm(NULL
, i
->getSrc(0)->reg
.data
.offset
+ typeSizeof(i
->sType
));
2771 Value
*length
= loadBufLength32(ind
, i
->getSrc(0)->reg
.fileIndex
* 16);
2772 Value
*pred
= new_LValue(func
, FILE_PREDICATE
);
2773 if (i
->src(0).isIndirect(0)) {
2774 bld
.mkOp2(OP_ADD
, TYPE_U64
, ptr
, ptr
, i
->getIndirect(0, 0));
2775 bld
.mkOp2(OP_ADD
, TYPE_U32
, offset
, offset
, i
->getIndirect(0, 0));
2777 i
->setIndirect(0, 1, NULL
);
2778 i
->setIndirect(0, 0, ptr
);
2779 i
->getSrc(0)->reg
.file
= FILE_MEMORY_GLOBAL
;
2780 bld
.mkCmp(OP_SET
, CC_GT
, TYPE_U32
, pred
, TYPE_U32
, offset
, length
);
2781 i
->setPredicate(CC_NOT_P
, pred
);
2782 if (i
->defExists(0)) {
2783 Value
*zero
, *dst
= i
->getDef(0);
2784 i
->setDef(0, bld
.getSSA());
2786 bld
.setPosition(i
, true);
2787 bld
.mkMov((zero
= bld
.getSSA()), bld
.mkImm(0))
2788 ->setPredicate(CC_P
, pred
);
2789 bld
.mkOp2(OP_UNION
, TYPE_U32
, dst
, i
->getDef(0), zero
);
2795 NVC0LoweringPass::readTessCoord(LValue
*dst
, int c
)
2797 Value
*laneid
= bld
.getSSA();
2800 bld
.mkOp1(OP_RDSV
, TYPE_U32
, laneid
, bld
.mkSysVal(SV_LANEID
, 0));
2811 if (prog
->driver
->prop
.tp
.domain
!= PIPE_PRIM_TRIANGLES
) {
2812 bld
.mkMov(dst
, bld
.loadImm(NULL
, 0));
2819 bld
.mkFetch(x
, TYPE_F32
, FILE_SHADER_OUTPUT
, 0x2f0, NULL
, laneid
);
2821 bld
.mkFetch(y
, TYPE_F32
, FILE_SHADER_OUTPUT
, 0x2f4, NULL
, laneid
);
2824 bld
.mkOp2(OP_ADD
, TYPE_F32
, dst
, x
, y
);
2825 bld
.mkOp2(OP_SUB
, TYPE_F32
, dst
, bld
.loadImm(NULL
, 1.0f
), dst
);
2830 NVC0LoweringPass::handleRDSV(Instruction
*i
)
2832 Symbol
*sym
= i
->getSrc(0)->asSym();
2833 const SVSemantic sv
= sym
->reg
.data
.sv
.sv
;
2836 uint32_t addr
= targ
->getSVAddress(FILE_SHADER_INPUT
, sym
);
2838 if (addr
>= 0x400) {
2840 if (sym
->reg
.data
.sv
.index
== 3) {
2841 // TGSI backend may use 4th component of TID,NTID,CTAID,NCTAID
2843 i
->setSrc(0, bld
.mkImm((sv
== SV_NTID
|| sv
== SV_NCTAID
) ? 1 : 0));
2846 // Help CSE combine TID fetches
2847 Value
*tid
= bld
.mkOp1v(OP_RDSV
, TYPE_U32
, bld
.getScratch(),
2848 bld
.mkSysVal(SV_COMBINED_TID
, 0));
2851 switch (sym
->reg
.data
.sv
.index
) {
2852 case 0: i
->setSrc(1, bld
.mkImm(0x1000)); break;
2853 case 1: i
->setSrc(1, bld
.mkImm(0x0a10)); break;
2854 case 2: i
->setSrc(1, bld
.mkImm(0x061a)); break;
2857 if (sv
== SV_VERTEX_COUNT
) {
2858 bld
.setPosition(i
, true);
2859 bld
.mkOp2(OP_EXTBF
, TYPE_U32
, i
->getDef(0), i
->getDef(0), bld
.mkImm(0x808));
2866 assert(prog
->getType() == Program::TYPE_FRAGMENT
);
2867 if (i
->srcExists(1)) {
2868 // Pass offset through to the interpolation logic
2869 ld
= bld
.mkInterp(NV50_IR_INTERP_LINEAR
| NV50_IR_INTERP_OFFSET
,
2870 i
->getDef(0), addr
, NULL
);
2871 ld
->setSrc(1, i
->getSrc(1));
2873 bld
.mkInterp(NV50_IR_INTERP_LINEAR
, i
->getDef(0), addr
, NULL
);
2878 Value
*face
= i
->getDef(0);
2879 bld
.mkInterp(NV50_IR_INTERP_FLAT
, face
, addr
, NULL
);
2880 if (i
->dType
== TYPE_F32
) {
2881 bld
.mkOp2(OP_OR
, TYPE_U32
, face
, face
, bld
.mkImm(0x00000001));
2882 bld
.mkOp1(OP_NEG
, TYPE_S32
, face
, face
);
2883 bld
.mkCvt(OP_CVT
, TYPE_F32
, face
, TYPE_S32
, face
);
2888 assert(prog
->getType() == Program::TYPE_TESSELLATION_EVAL
);
2889 readTessCoord(i
->getDef(0)->asLValue(), i
->getSrc(0)->reg
.data
.sv
.index
);
2894 assert(targ
->getChipset() >= NVISA_GK104_CHIPSET
); // mov $sreg otherwise
2895 if (sym
->reg
.data
.sv
.index
== 3) {
2897 i
->setSrc(0, bld
.mkImm(sv
== SV_GRIDID
? 0 : 1));
2902 addr
+= prog
->driver
->prop
.cp
.gridInfoBase
;
2903 bld
.mkLoad(TYPE_U32
, i
->getDef(0),
2904 bld
.mkSymbol(FILE_MEMORY_CONST
, prog
->driver
->io
.auxCBSlot
,
2905 TYPE_U32
, addr
), NULL
);
2907 case SV_SAMPLE_INDEX
:
2908 // TODO: Properly pass source as an address in the PIX address space
2909 // (which can be of the form [r0+offset]). But this is currently
2911 ld
= bld
.mkOp1(OP_PIXLD
, TYPE_U32
, i
->getDef(0), bld
.mkImm(0));
2912 ld
->subOp
= NV50_IR_SUBOP_PIXLD_SAMPLEID
;
2914 case SV_SAMPLE_POS
: {
2915 Value
*sampleID
= bld
.getScratch();
2916 ld
= bld
.mkOp1(OP_PIXLD
, TYPE_U32
, sampleID
, bld
.mkImm(0));
2917 ld
->subOp
= NV50_IR_SUBOP_PIXLD_SAMPLEID
;
2918 Value
*offset
= calculateSampleOffset(sampleID
);
2920 assert(prog
->driver
->prop
.fp
.readsSampleLocations
);
2922 if (targ
->getChipset() >= NVISA_GM200_CHIPSET
) {
2923 bld
.mkLoad(TYPE_F32
,
2926 FILE_MEMORY_CONST
, prog
->driver
->io
.auxCBSlot
,
2927 TYPE_U32
, prog
->driver
->io
.sampleInfoBase
),
2929 bld
.mkOp2(OP_EXTBF
, TYPE_U32
, i
->getDef(0), i
->getDef(0),
2930 bld
.mkImm(0x040c + sym
->reg
.data
.sv
.index
* 16));
2931 bld
.mkCvt(OP_CVT
, TYPE_F32
, i
->getDef(0), TYPE_U32
, i
->getDef(0));
2932 bld
.mkOp2(OP_MUL
, TYPE_F32
, i
->getDef(0), i
->getDef(0), bld
.mkImm(1.0f
/ 16.0f
));
2934 bld
.mkLoad(TYPE_F32
,
2937 FILE_MEMORY_CONST
, prog
->driver
->io
.auxCBSlot
,
2938 TYPE_U32
, prog
->driver
->io
.sampleInfoBase
+
2939 4 * sym
->reg
.data
.sv
.index
),
2944 case SV_SAMPLE_MASK
: {
2945 ld
= bld
.mkOp1(OP_PIXLD
, TYPE_U32
, i
->getDef(0), bld
.mkImm(0));
2946 ld
->subOp
= NV50_IR_SUBOP_PIXLD_COVMASK
;
2947 Instruction
*sampleid
=
2948 bld
.mkOp1(OP_PIXLD
, TYPE_U32
, bld
.getSSA(), bld
.mkImm(0));
2949 sampleid
->subOp
= NV50_IR_SUBOP_PIXLD_SAMPLEID
;
2951 bld
.mkOp2v(OP_AND
, TYPE_U32
, bld
.getSSA(), ld
->getDef(0),
2952 bld
.mkOp2v(OP_SHL
, TYPE_U32
, bld
.getSSA(),
2953 bld
.loadImm(NULL
, 1), sampleid
->getDef(0)));
2954 if (prog
->driver
->prop
.fp
.persampleInvocation
) {
2955 bld
.mkMov(i
->getDef(0), masked
);
2957 bld
.mkOp3(OP_SELP
, TYPE_U32
, i
->getDef(0), ld
->getDef(0), masked
,
2964 case SV_BASEINSTANCE
:
2966 ld
= bld
.mkLoad(TYPE_U32
, i
->getDef(0),
2967 bld
.mkSymbol(FILE_MEMORY_CONST
,
2968 prog
->driver
->io
.auxCBSlot
,
2970 prog
->driver
->io
.drawInfoBase
+
2971 4 * (sv
- SV_BASEVERTEX
)),
2975 if (prog
->getType() == Program::TYPE_TESSELLATION_EVAL
&& !i
->perPatch
)
2976 vtx
= bld
.mkOp1v(OP_PFETCH
, TYPE_U32
, bld
.getSSA(), bld
.mkImm(0));
2977 if (prog
->getType() == Program::TYPE_FRAGMENT
) {
2978 bld
.mkInterp(NV50_IR_INTERP_FLAT
, i
->getDef(0), addr
, NULL
);
2980 ld
= bld
.mkFetch(i
->getDef(0), i
->dType
,
2981 FILE_SHADER_INPUT
, addr
, i
->getIndirect(0, 0), vtx
);
2982 ld
->perPatch
= i
->perPatch
;
2986 bld
.getBB()->remove(i
);
2991 NVC0LoweringPass::handleDIV(Instruction
*i
)
2993 if (!isFloatType(i
->dType
))
2995 bld
.setPosition(i
, false);
2996 Instruction
*rcp
= bld
.mkOp1(OP_RCP
, i
->dType
, bld
.getSSA(typeSizeof(i
->dType
)), i
->getSrc(1));
2998 i
->setSrc(1, rcp
->getDef(0));
3003 NVC0LoweringPass::handleMOD(Instruction
*i
)
3005 if (!isFloatType(i
->dType
))
3007 LValue
*value
= bld
.getScratch(typeSizeof(i
->dType
));
3008 bld
.mkOp1(OP_RCP
, i
->dType
, value
, i
->getSrc(1));
3009 bld
.mkOp2(OP_MUL
, i
->dType
, value
, i
->getSrc(0), value
);
3010 bld
.mkOp1(OP_TRUNC
, i
->dType
, value
, value
);
3011 bld
.mkOp2(OP_MUL
, i
->dType
, value
, i
->getSrc(1), value
);
3013 i
->setSrc(1, value
);
3018 NVC0LoweringPass::handleSQRT(Instruction
*i
)
3020 if (targ
->isOpSupported(OP_SQRT
, i
->dType
))
3023 if (i
->dType
== TYPE_F64
) {
3024 Value
*pred
= bld
.getSSA(1, FILE_PREDICATE
);
3025 Value
*zero
= bld
.loadImm(NULL
, 0.0);
3026 Value
*dst
= bld
.getSSA(8);
3027 bld
.mkOp1(OP_RSQ
, i
->dType
, dst
, i
->getSrc(0));
3028 bld
.mkCmp(OP_SET
, CC_LE
, i
->dType
, pred
, i
->dType
, i
->getSrc(0), zero
);
3029 bld
.mkOp3(OP_SELP
, TYPE_U64
, dst
, zero
, dst
, pred
);
3032 // TODO: Handle this properly with a library function
3034 bld
.setPosition(i
, true);
3036 bld
.mkOp1(OP_RCP
, i
->dType
, i
->getDef(0), i
->getDef(0));
3043 NVC0LoweringPass::handlePOW(Instruction
*i
)
3045 LValue
*val
= bld
.getScratch();
3047 bld
.mkOp1(OP_LG2
, TYPE_F32
, val
, i
->getSrc(0));
3048 bld
.mkOp2(OP_MUL
, TYPE_F32
, val
, i
->getSrc(1), val
)->dnz
= 1;
3049 bld
.mkOp1(OP_PREEX2
, TYPE_F32
, val
, val
);
3059 NVC0LoweringPass::handleEXPORT(Instruction
*i
)
3061 if (prog
->getType() == Program::TYPE_FRAGMENT
) {
3062 int id
= i
->getSrc(0)->reg
.data
.offset
/ 4;
3064 if (i
->src(0).isIndirect(0)) // TODO, ugly
3067 i
->subOp
= NV50_IR_SUBOP_MOV_FINAL
;
3068 i
->src(0).set(i
->src(1));
3070 i
->setDef(0, new_LValue(func
, FILE_GPR
));
3071 i
->getDef(0)->reg
.data
.id
= id
;
3073 prog
->maxGPR
= MAX2(prog
->maxGPR
, id
);
3075 if (prog
->getType() == Program::TYPE_GEOMETRY
) {
3076 i
->setIndirect(0, 1, gpEmitAddress
);
3082 NVC0LoweringPass::handleOUT(Instruction
*i
)
3084 Instruction
*prev
= i
->prev
;
3085 ImmediateValue stream
, prevStream
;
3087 // Only merge if the stream ids match. Also, note that the previous
3088 // instruction would have already been lowered, so we take arg1 from it.
3089 if (i
->op
== OP_RESTART
&& prev
&& prev
->op
== OP_EMIT
&&
3090 i
->src(0).getImmediate(stream
) &&
3091 prev
->src(1).getImmediate(prevStream
) &&
3092 stream
.reg
.data
.u32
== prevStream
.reg
.data
.u32
) {
3093 i
->prev
->subOp
= NV50_IR_SUBOP_EMIT_RESTART
;
3094 delete_Instruction(prog
, i
);
3096 assert(gpEmitAddress
);
3097 i
->setDef(0, gpEmitAddress
);
3098 i
->setSrc(1, i
->getSrc(0));
3099 i
->setSrc(0, gpEmitAddress
);
3105 NVC0LoweringPass::calculateSampleOffset(Value
*sampleID
)
3107 Value
*offset
= bld
.getScratch();
3108 if (targ
->getChipset() >= NVISA_GM200_CHIPSET
) {
3109 // Sample location offsets (in bytes) are calculated like so:
3110 // offset = (SV_POSITION.y % 4 * 2) + (SV_POSITION.x % 2)
3111 // offset = offset * 32 + sampleID % 8 * 4;
3112 // which is equivalent to:
3113 // offset = (SV_POSITION.y & 0x3) << 6 + (SV_POSITION.x & 0x1) << 5;
3114 // offset += sampleID << 2
3116 // The second operand (src1) of the INSBF instructions are like so:
3117 // 0xssll where ss is the size and ll is the offset.
3118 // so: dest = src2 | (src0 & (1 << ss - 1)) << ll
3120 // Add sample ID (offset = (sampleID & 0x7) << 2)
3121 bld
.mkOp3(OP_INSBF
, TYPE_U32
, offset
, sampleID
, bld
.mkImm(0x0302), bld
.mkImm(0x0));
3123 Symbol
*xSym
= bld
.mkSysVal(SV_POSITION
, 0);
3124 Symbol
*ySym
= bld
.mkSysVal(SV_POSITION
, 1);
3125 Value
*coord
= bld
.getScratch();
3127 // Add X coordinate (offset |= (SV_POSITION.x & 0x1) << 5)
3128 bld
.mkInterp(NV50_IR_INTERP_LINEAR
, coord
,
3129 targ
->getSVAddress(FILE_SHADER_INPUT
, xSym
), NULL
);
3130 bld
.mkCvt(OP_CVT
, TYPE_U32
, coord
, TYPE_F32
, coord
)
3132 bld
.mkOp3(OP_INSBF
, TYPE_U32
, offset
, coord
, bld
.mkImm(0x0105), offset
);
3134 // Add Y coordinate (offset |= (SV_POSITION.y & 0x3) << 6)
3135 bld
.mkInterp(NV50_IR_INTERP_LINEAR
, coord
,
3136 targ
->getSVAddress(FILE_SHADER_INPUT
, ySym
), NULL
);
3137 bld
.mkCvt(OP_CVT
, TYPE_U32
, coord
, TYPE_F32
, coord
)
3139 bld
.mkOp3(OP_INSBF
, TYPE_U32
, offset
, coord
, bld
.mkImm(0x0206), offset
);
3141 bld
.mkOp2(OP_SHL
, TYPE_U32
, offset
, sampleID
, bld
.mkImm(3));
3146 // Handle programmable sample locations for GM20x+
3148 NVC0LoweringPass::handlePIXLD(Instruction
*i
)
3150 if (i
->subOp
!= NV50_IR_SUBOP_PIXLD_OFFSET
)
3152 if (targ
->getChipset() < NVISA_GM200_CHIPSET
)
3155 assert(prog
->driver
->prop
.fp
.readsSampleLocations
);
3157 bld
.mkLoad(TYPE_F32
,
3160 FILE_MEMORY_CONST
, prog
->driver
->io
.auxCBSlot
,
3161 TYPE_U32
, prog
->driver
->io
.sampleInfoBase
),
3162 calculateSampleOffset(i
->getSrc(0)));
3164 bld
.getBB()->remove(i
);
3167 // Generate a binary predicate if an instruction is predicated by
3168 // e.g. an f32 value.
3170 NVC0LoweringPass::checkPredicate(Instruction
*insn
)
3172 Value
*pred
= insn
->getPredicate();
3175 if (!pred
|| pred
->reg
.file
== FILE_PREDICATE
)
3177 pdst
= new_LValue(func
, FILE_PREDICATE
);
3179 // CAUTION: don't use pdst->getInsn, the definition might not be unique,
3180 // delay turning PSET(FSET(x,y),0) into PSET(x,y) to a later pass
3182 bld
.mkCmp(OP_SET
, CC_NEU
, insn
->dType
, pdst
, insn
->dType
, bld
.mkImm(0), pred
);
3184 insn
->setPredicate(insn
->cc
, pdst
);
3188 // - add quadop dance for texturing
3189 // - put FP outputs in GPRs
3190 // - convert instruction sequences
3193 NVC0LoweringPass::visit(Instruction
*i
)
3196 bld
.setPosition(i
, false);
3198 if (i
->cc
!= CC_ALWAYS
)
3207 return handleTEX(i
->asTex());
3209 return handleTXD(i
->asTex());
3211 return handleTXLQ(i
->asTex());
3213 return handleTXQ(i
->asTex());
3215 bld
.mkOp1(OP_PREEX2
, TYPE_F32
, i
->getDef(0), i
->getSrc(0));
3216 i
->setSrc(0, i
->getDef(0));
3219 return handlePOW(i
);
3221 return handleDIV(i
);
3223 return handleMOD(i
);
3225 return handleSQRT(i
);
3227 ret
= handleEXPORT(i
);
3231 return handleOUT(i
);
3233 return handleRDSV(i
);
3235 return handleWRSV(i
);
3242 const bool cctl
= i
->src(0).getFile() == FILE_MEMORY_BUFFER
;
3244 handleCasExch(i
, cctl
);
3253 if (targ
->getChipset() >= NVISA_GM107_CHIPSET
)
3254 handleSurfaceOpGM107(i
->asTex());
3255 else if (targ
->getChipset() >= NVISA_GK104_CHIPSET
)
3256 handleSurfaceOpNVE4(i
->asTex());
3258 handleSurfaceOpNVC0(i
->asTex());
3261 handleSUQ(i
->asTex());
3273 /* Kepler+ has a special opcode to compute a new base address to be used
3274 * for indirect loads.
3276 * Maxwell+ has an additional similar requirement for indirect
3277 * interpolation ops in frag shaders.
3279 bool doAfetch
= false;
3280 if (targ
->getChipset() >= NVISA_GK104_CHIPSET
&&
3282 (i
->op
== OP_VFETCH
|| i
->op
== OP_EXPORT
) &&
3283 i
->src(0).isIndirect(0)) {
3286 if (targ
->getChipset() >= NVISA_GM107_CHIPSET
&&
3287 (i
->op
== OP_LINTERP
|| i
->op
== OP_PINTERP
) &&
3288 i
->src(0).isIndirect(0)) {
3293 Value
*addr
= cloneShallow(func
, i
->getSrc(0));
3294 Instruction
*afetch
= bld
.mkOp1(OP_AFETCH
, TYPE_U32
, bld
.getSSA(),
3296 afetch
->setIndirect(0, 0, i
->getIndirect(0, 0));
3297 addr
->reg
.data
.offset
= 0;
3299 i
->setIndirect(0, 0, afetch
->getDef(0));
3306 TargetNVC0::runLegalizePass(Program
*prog
, CGStage stage
) const
3308 if (stage
== CG_STAGE_PRE_SSA
) {
3309 NVC0LoweringPass
pass(prog
);
3310 return pass
.run(prog
, false, true);
3312 if (stage
== CG_STAGE_POST_RA
) {
3313 NVC0LegalizePostRA
pass(prog
);
3314 return pass
.run(prog
, false, true);
3316 if (stage
== CG_STAGE_SSA
) {
3317 NVC0LegalizeSSA pass
;
3318 return pass
.run(prog
, false, true);
3323 } // namespace nv50_ir