1 /*
2 * Copyright 2011 Christoph Bumiller
3 *
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:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
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.
21 */
22
23 #include "codegen/nv50_ir.h"
24 #include "codegen/nv50_ir_target.h"
25
26 namespace nv50_ir {
27
28 const uint8_t Target::operationSrcNr[] =
29 {
30 0, 0, // NOP, PHI
31 0, 0, 0, 0, // UNION, SPLIT, MERGE, CONSTRAINT
32 1, 1, 2, // MOV, LOAD, STORE
33 2, 2, 2, 2, 2, 3, 3, 3, // ADD, SUB, MUL, DIV, MOD, MAD, FMA, SAD
34 3, 3, // SHLADD, XMAD
35 1, 1, 1, // ABS, NEG, NOT
36 2, 2, 2, 3, 2, 2, 3, // AND, OR, XOR, LOP3_LUT, SHL, SHR, SHF
37 2, 2, 1, // MAX, MIN, SAT
38 1, 1, 1, 1, // CEIL, FLOOR, TRUNC, CVT
39 3, 3, 3, 2, 3, 3, // SET_AND,OR,XOR, SET, SELP, SLCT
40 1, 1, 1, 1, 1, 1, // RCP, RSQ, LG2, SIN, COS, EX2
41 1, 1, 1, 1, 1, 2, // EXP, LOG, PRESIN, PREEX2, SQRT, POW
42 0, 0, 0, 0, 0, // BRA, CALL, RET, CONT, BREAK,
43 0, 0, 0, // PRERET,CONT,BREAK
44 0, 0, 0, 0, 0, 0, // BRKPT, JOINAT, JOIN, DISCARD, EXIT, MEMBAR
45 1, 1, 1, 2, 1, 2, // VFETCH, PFETCH, AFETCH, EXPORT, LINTERP, PINTERP
46 1, 1, 1, // EMIT, RESTART, FINAL
47 1, 1, 1, // TEX, TXB, TXL,
48 1, 1, 1, 1, 1, 1, 2, // TXF, TXQ, TXD, TXG, TXLQ, TEXCSAA, TEXPREP
49 1, 1, 2, 2, 2, 2, 2, // SULDB, SULDP, SUSTB, SUSTP, SUREDB, SUREDP, SULEA
50 3, 3, 3, 1, 3, // SUBFM, SUCLAMP, SUEAU, SUQ, MADSP
51 0, // TEXBAR
52 1, 1, // DFDX, DFDY
53 1, 2, 1, 2, 0, 0, // RDSV, WRSV, PIXLD, QUADOP, QUADON, QUADPOP
54 2, 3, 2, 1, 1, 2, 3, // POPCNT, INSBF, EXTBF, BFIND, BREV, BMSK, PERMT
55 2, // SGXT
56 3, 2, // ATOM, BAR
57 2, 2, 2, 2, 3, 2, // VADD, VAVG, VMIN, VMAX, VSAD, VSET,
58 2, 2, 2, 1, // VSHR, VSHL, VSEL, CCTL
59 3, // SHFL
60 1, // VOTE
61 1, // BUFQ
62 1, // WARPSYNC
63 0
64 };
65
66 const OpClass Target::operationClass[] =
67 {
68 // NOP; PHI; UNION, SPLIT, MERGE, CONSTRAINT
69 OPCLASS_OTHER,
70 OPCLASS_PSEUDO,
71 OPCLASS_PSEUDO, OPCLASS_PSEUDO, OPCLASS_PSEUDO, OPCLASS_PSEUDO,
72 // MOV; LOAD; STORE
73 OPCLASS_MOVE,
74 OPCLASS_LOAD,
75 OPCLASS_STORE,
76 // ADD, SUB, MUL; DIV, MOD; MAD, FMA, SAD, SHLADD, XMAD
77 OPCLASS_ARITH, OPCLASS_ARITH, OPCLASS_ARITH,
78 OPCLASS_ARITH, OPCLASS_ARITH,
79 OPCLASS_ARITH, OPCLASS_ARITH, OPCLASS_ARITH, OPCLASS_ARITH, OPCLASS_ARITH,
80 // ABS, NEG; NOT, AND, OR, XOR, LOP3_LUT; SHL, SHR, SHF
81 OPCLASS_CONVERT, OPCLASS_CONVERT,
82 OPCLASS_LOGIC, OPCLASS_LOGIC, OPCLASS_LOGIC, OPCLASS_LOGIC, OPCLASS_LOGIC,
83 OPCLASS_SHIFT, OPCLASS_SHIFT, OPCLASS_SHIFT,
84 // MAX, MIN
85 OPCLASS_COMPARE, OPCLASS_COMPARE,
86 // SAT, CEIL, FLOOR, TRUNC; CVT
87 OPCLASS_CONVERT, OPCLASS_CONVERT, OPCLASS_CONVERT, OPCLASS_CONVERT,
88 OPCLASS_CONVERT,
89 // SET(AND,OR,XOR); SELP, SLCT
90 OPCLASS_COMPARE, OPCLASS_COMPARE, OPCLASS_COMPARE, OPCLASS_COMPARE,
91 OPCLASS_COMPARE, OPCLASS_COMPARE,
92 // RCP, RSQ, LG2, SIN, COS; EX2, EXP, LOG, PRESIN, PREEX2; SQRT, POW
93 OPCLASS_SFU, OPCLASS_SFU, OPCLASS_SFU, OPCLASS_SFU, OPCLASS_SFU,
94 OPCLASS_SFU, OPCLASS_SFU, OPCLASS_SFU, OPCLASS_SFU, OPCLASS_SFU,
95 OPCLASS_SFU, OPCLASS_SFU,
96 // BRA, CALL, RET; CONT, BREAK, PRE(RET,CONT,BREAK); BRKPT, JOINAT, JOIN
97 OPCLASS_FLOW, OPCLASS_FLOW, OPCLASS_FLOW,
98 OPCLASS_FLOW, OPCLASS_FLOW, OPCLASS_FLOW, OPCLASS_FLOW, OPCLASS_FLOW,
99 OPCLASS_FLOW, OPCLASS_FLOW, OPCLASS_FLOW,
100 // DISCARD, EXIT
101 OPCLASS_FLOW, OPCLASS_FLOW,
102 // MEMBAR
103 OPCLASS_CONTROL,
104 // VFETCH, PFETCH, AFETCH, EXPORT
105 OPCLASS_LOAD, OPCLASS_OTHER, OPCLASS_OTHER, OPCLASS_STORE,
106 // LINTERP, PINTERP
107 OPCLASS_SFU, OPCLASS_SFU,
108 // EMIT, RESTART, FINAL
109 OPCLASS_CONTROL, OPCLASS_CONTROL, OPCLASS_CONTROL,
110 // TEX, TXB, TXL, TXF; TXQ, TXD, TXG, TXLQ; TEXCSAA, TEXPREP
111 OPCLASS_TEXTURE, OPCLASS_TEXTURE, OPCLASS_TEXTURE, OPCLASS_TEXTURE,
112 OPCLASS_TEXTURE, OPCLASS_TEXTURE, OPCLASS_TEXTURE, OPCLASS_TEXTURE,
113 OPCLASS_TEXTURE, OPCLASS_TEXTURE,
114 // SULDB, SULDP, SUSTB, SUSTP; SUREDB, SUREDP, SULEA
115 OPCLASS_SURFACE, OPCLASS_SURFACE, OPCLASS_ATOMIC, OPCLASS_SURFACE,
116 OPCLASS_SURFACE, OPCLASS_SURFACE, OPCLASS_SURFACE,
117 // SUBFM, SUCLAMP, SUEAU, SUQ, MADSP
118 OPCLASS_OTHER, OPCLASS_OTHER, OPCLASS_OTHER, OPCLASS_OTHER, OPCLASS_ARITH,
119 // TEXBAR
120 OPCLASS_OTHER,
121 // DFDX, DFDY, RDSV, WRSV; PIXLD, QUADOP, QUADON, QUADPOP
122 OPCLASS_OTHER, OPCLASS_OTHER, OPCLASS_OTHER, OPCLASS_OTHER,
123 OPCLASS_OTHER, OPCLASS_OTHER, OPCLASS_CONTROL, OPCLASS_CONTROL,
124 // POPCNT, INSBF, EXTBF, BFIND, BREV, BMSK; PERMT, SGXT
125 OPCLASS_BITFIELD, OPCLASS_BITFIELD, OPCLASS_BITFIELD, OPCLASS_BITFIELD,
126 OPCLASS_BITFIELD, OPCLASS_BITFIELD, OPCLASS_BITFIELD, OPCLASS_BITFIELD,
127 // ATOM, BAR
128 OPCLASS_ATOMIC, OPCLASS_CONTROL,
129 // VADD, VAVG, VMIN, VMAX
130 OPCLASS_VECTOR, OPCLASS_VECTOR, OPCLASS_VECTOR, OPCLASS_VECTOR,
131 // VSAD, VSET, VSHR, VSHL
132 OPCLASS_VECTOR, OPCLASS_VECTOR, OPCLASS_VECTOR, OPCLASS_VECTOR,
133 // VSEL, CCTL
134 OPCLASS_VECTOR, OPCLASS_CONTROL,
135 // SHFL
136 OPCLASS_OTHER,
137 // VOTE
138 OPCLASS_OTHER,
139 // BUFQ
140 OPCLASS_OTHER,
141 // WARPSYNC
142 OPCLASS_OTHER,
143 OPCLASS_PSEUDO // LAST
144 };
145
146
147 extern Target *getTargetGV100(unsigned int chipset);
148 extern Target *getTargetGM107(unsigned int chipset);
149 extern Target *getTargetNVC0(unsigned int chipset);
150 extern Target *getTargetNV50(unsigned int chipset);
151
create(unsigned int chipset)152 Target *Target::create(unsigned int chipset)
153 {
154 STATIC_ASSERT(ARRAY_SIZE(operationSrcNr) == OP_LAST + 1);
155 STATIC_ASSERT(ARRAY_SIZE(operationClass) == OP_LAST + 1);
156 switch (chipset & ~0xf) {
157 case 0x160:
158 case 0x140:
159 return getTargetGV100(chipset);
160 case 0x110:
161 case 0x120:
162 case 0x130:
163 return getTargetGM107(chipset);
164 case 0xc0:
165 case 0xd0:
166 case 0xe0:
167 case 0xf0:
168 case 0x100:
169 return getTargetNVC0(chipset);
170 case 0x50:
171 case 0x80:
172 case 0x90:
173 case 0xa0:
174 return getTargetNV50(chipset);
175 default:
176 ERROR("unsupported target: NV%x\n", chipset);
177 return 0;
178 }
179 }
180
destroy(Target * targ)181 void Target::destroy(Target *targ)
182 {
183 delete targ;
184 }
185
CodeEmitter(const Target * target)186 CodeEmitter::CodeEmitter(const Target *target) : targ(target), code(NULL),
187 codeSize(0), codeSizeLimit(0), relocInfo(NULL), fixupInfo(NULL)
188 {
189 }
190
191 void
setCodeLocation(void * ptr,uint32_t size)192 CodeEmitter::setCodeLocation(void *ptr, uint32_t size)
193 {
194 code = reinterpret_cast<uint32_t *>(ptr);
195 codeSize = 0;
196 codeSizeLimit = size;
197 }
198
199 void
printBinary() const200 CodeEmitter::printBinary() const
201 {
202 uint32_t *bin = code - codeSize / 4;
203 INFO("program binary (%u bytes)", codeSize);
204 for (unsigned int pos = 0; pos < codeSize / 4; ++pos) {
205 if ((pos % 8) == 0)
206 INFO("\n");
207 INFO("%08x ", bin[pos]);
208 }
209 INFO("\n");
210 }
211
sizeToBundlesNVE4(uint32_t size)212 static inline uint32_t sizeToBundlesNVE4(uint32_t size)
213 {
214 return (size + 55) / 56;
215 }
216
217 void
prepareEmission(Program * prog)218 CodeEmitter::prepareEmission(Program *prog)
219 {
220 for (ArrayList::Iterator fi = prog->allFuncs.iterator();
221 !fi.end(); fi.next()) {
222 Function *func = reinterpret_cast<Function *>(fi.get());
223 func->binPos = prog->binSize;
224 prepareEmission(func);
225
226 // adjust sizes & positions for scheduling info:
227 if (prog->getTarget()->hasSWSched) {
228 uint32_t adjPos = func->binPos;
229 BasicBlock *bb = NULL;
230 for (int i = 0; i < func->bbCount; ++i) {
231 bb = func->bbArray[i];
232 int32_t adjSize = bb->binSize;
233 if (adjPos % 64) {
234 adjSize -= 64 - adjPos % 64;
235 if (adjSize < 0)
236 adjSize = 0;
237 }
238 adjSize = bb->binSize + sizeToBundlesNVE4(adjSize) * 8;
239 bb->binPos = adjPos;
240 bb->binSize = adjSize;
241 adjPos += adjSize;
242 }
243 if (bb)
244 func->binSize = adjPos - func->binPos;
245 }
246
247 prog->binSize += func->binSize;
248 }
249 }
250
251 void
prepareEmission(Function * func)252 CodeEmitter::prepareEmission(Function *func)
253 {
254 func->bbCount = 0;
255 func->bbArray = new BasicBlock * [func->cfg.getSize()];
256
257 BasicBlock::get(func->cfg.getRoot())->binPos = func->binPos;
258
259 for (IteratorRef it = func->cfg.iteratorCFG(); !it->end(); it->next())
260 prepareEmission(BasicBlock::get(*it));
261 }
262
263 void
prepareEmission(BasicBlock * bb)264 CodeEmitter::prepareEmission(BasicBlock *bb)
265 {
266 Instruction *i, *next;
267 Function *func = bb->getFunction();
268 int j;
269 unsigned int nShort;
270
271 for (j = func->bbCount - 1; j >= 0 && !func->bbArray[j]->binSize; --j);
272
273 for (; j >= 0; --j) {
274 BasicBlock *in = func->bbArray[j];
275 Instruction *exit = in->getExit();
276
277 if (exit && exit->op == OP_BRA && exit->asFlow()->target.bb == bb) {
278 in->binSize -= 8;
279 func->binSize -= 8;
280
281 for (++j; j < func->bbCount; ++j)
282 func->bbArray[j]->binPos -= 8;
283
284 in->remove(exit);
285 }
286 bb->binPos = in->binPos + in->binSize;
287 if (in->binSize) // no more no-op branches to bb
288 break;
289 }
290 func->bbArray[func->bbCount++] = bb;
291
292 if (!bb->getExit())
293 return;
294
295 // determine encoding size, try to group short instructions
296 nShort = 0;
297 for (i = bb->getEntry(); i; i = next) {
298 next = i->next;
299
300 i->encSize = getMinEncodingSize(i);
301 if (next && i->encSize < 8)
302 ++nShort;
303 else
304 if ((nShort & 1) && next && getMinEncodingSize(next) == 4) {
305 if (i->isCommutationLegal(i->next)) {
306 bb->permuteAdjacent(i, next);
307 next->encSize = 4;
308 next = i;
309 i = i->prev;
310 ++nShort;
311 } else
312 if (i->isCommutationLegal(i->prev) && next->next) {
313 bb->permuteAdjacent(i->prev, i);
314 next->encSize = 4;
315 next = next->next;
316 bb->binSize += 4;
317 ++nShort;
318 } else {
319 i->encSize = 8;
320 i->prev->encSize = 8;
321 bb->binSize += 4;
322 nShort = 0;
323 }
324 } else {
325 i->encSize = 8;
326 if (nShort & 1) {
327 i->prev->encSize = 8;
328 bb->binSize += 4;
329 }
330 nShort = 0;
331 }
332 bb->binSize += i->encSize;
333 }
334
335 if (bb->getExit()->encSize == 4) {
336 assert(nShort);
337 bb->getExit()->encSize = 8;
338 bb->binSize += 4;
339
340 if ((bb->getExit()->prev->encSize == 4) && !(nShort & 1)) {
341 bb->binSize += 8;
342 bb->getExit()->prev->encSize = 8;
343 }
344 }
345 assert(!bb->getEntry() || (bb->getExit() && bb->getExit()->encSize == 8));
346
347 func->binSize += bb->binSize;
348 }
349
350 bool
emitBinary(struct nv50_ir_prog_info_out * info)351 Program::emitBinary(struct nv50_ir_prog_info_out *info)
352 {
353 CodeEmitter *emit = target->getCodeEmitter(progType);
354
355 emit->prepareEmission(this);
356
357 if (dbgFlags & NV50_IR_DEBUG_BASIC)
358 this->print();
359
360 if (!binSize) {
361 code = NULL;
362 return false;
363 }
364 code = reinterpret_cast<uint32_t *>(MALLOC(binSize));
365 if (!code)
366 return false;
367 emit->setCodeLocation(code, binSize);
368 info->bin.instructions = 0;
369
370 for (ArrayList::Iterator fi = allFuncs.iterator(); !fi.end(); fi.next()) {
371 Function *fn = reinterpret_cast<Function *>(fi.get());
372
373 assert(emit->getCodeSize() == fn->binPos);
374
375 for (int b = 0; b < fn->bbCount; ++b) {
376 for (Instruction *i = fn->bbArray[b]->getEntry(); i; i = i->next) {
377 emit->emitInstruction(i);
378 info->bin.instructions++;
379 if ((typeSizeof(i->sType) == 8 || typeSizeof(i->dType) == 8) &&
380 (isFloatType(i->sType) || isFloatType(i->dType)))
381 info->io.fp64 = true;
382 }
383 }
384 }
385 info->io.fp64 |= fp64;
386 info->bin.relocData = emit->getRelocInfo();
387 info->bin.fixupData = emit->getFixupInfo();
388
389 // the nvc0 driver will print the binary itself together with the header
390 if ((dbgFlags & NV50_IR_DEBUG_BASIC) && getTarget()->getChipset() < 0xc0)
391 emit->printBinary();
392
393 delete emit;
394 return true;
395 }
396
397 #define RELOC_ALLOC_INCREMENT 8
398
399 bool
addReloc(RelocEntry::Type ty,int w,uint32_t data,uint32_t m,int s)400 CodeEmitter::addReloc(RelocEntry::Type ty, int w, uint32_t data, uint32_t m,
401 int s)
402 {
403 unsigned int n = relocInfo ? relocInfo->count : 0;
404
405 if (!(n % RELOC_ALLOC_INCREMENT)) {
406 size_t size = sizeof(RelocInfo) + n * sizeof(RelocEntry);
407 relocInfo = reinterpret_cast<RelocInfo *>(
408 REALLOC(relocInfo, n ? size : 0,
409 size + RELOC_ALLOC_INCREMENT * sizeof(RelocEntry)));
410 if (!relocInfo)
411 return false;
412 if (n == 0)
413 memset(relocInfo, 0, sizeof(RelocInfo));
414 }
415 ++relocInfo->count;
416
417 relocInfo->entry[n].data = data;
418 relocInfo->entry[n].mask = m;
419 relocInfo->entry[n].offset = codeSize + w * 4;
420 relocInfo->entry[n].bitPos = s;
421 relocInfo->entry[n].type = ty;
422
423 return true;
424 }
425
426 bool
addInterp(int ipa,int reg,FixupApply apply)427 CodeEmitter::addInterp(int ipa, int reg, FixupApply apply)
428 {
429 unsigned int n = fixupInfo ? fixupInfo->count : 0;
430
431 if (!(n % RELOC_ALLOC_INCREMENT)) {
432 size_t size = sizeof(FixupInfo) + n * sizeof(FixupEntry);
433 fixupInfo = reinterpret_cast<FixupInfo *>(
434 REALLOC(fixupInfo, n ? size : 0,
435 size + RELOC_ALLOC_INCREMENT * sizeof(FixupEntry)));
436 if (!fixupInfo)
437 return false;
438 if (n == 0)
439 fixupInfo->count = 0;
440 }
441 ++fixupInfo->count;
442
443 fixupInfo->entry[n] = FixupEntry(apply, ipa, reg, codeSize >> 2);
444
445 return true;
446 }
447
448 void
apply(uint32_t * binary,const RelocInfo * info) const449 RelocEntry::apply(uint32_t *binary, const RelocInfo *info) const
450 {
451 uint32_t value = 0;
452
453 switch (type) {
454 case TYPE_CODE: value = info->codePos; break;
455 case TYPE_BUILTIN: value = info->libPos; break;
456 case TYPE_DATA: value = info->dataPos; break;
457 default:
458 assert(0);
459 break;
460 }
461 value += data;
462 value = (bitPos < 0) ? (value >> -bitPos) : (value << bitPos);
463
464 binary[offset / 4] &= ~mask;
465 binary[offset / 4] |= value & mask;
466 }
467
468 } // namespace nv50_ir
469
470
471 #include "codegen/nv50_ir_driver.h"
472
473 extern "C" {
474
475 void
nv50_ir_relocate_code(void * relocData,uint32_t * code,uint32_t codePos,uint32_t libPos,uint32_t dataPos)476 nv50_ir_relocate_code(void *relocData, uint32_t *code,
477 uint32_t codePos,
478 uint32_t libPos,
479 uint32_t dataPos)
480 {
481 nv50_ir::RelocInfo *info = reinterpret_cast<nv50_ir::RelocInfo *>(relocData);
482
483 info->codePos = codePos;
484 info->libPos = libPos;
485 info->dataPos = dataPos;
486
487 for (unsigned int i = 0; i < info->count; ++i)
488 info->entry[i].apply(code, info);
489 }
490
491 void
nv50_ir_apply_fixups(void * fixupData,uint32_t * code,bool force_persample_interp,bool flatshade,uint8_t alphatest,bool msaa)492 nv50_ir_apply_fixups(void *fixupData, uint32_t *code,
493 bool force_persample_interp, bool flatshade,
494 uint8_t alphatest, bool msaa)
495 {
496 nv50_ir::FixupInfo *info = reinterpret_cast<nv50_ir::FixupInfo *>(
497 fixupData);
498
499 // force_persample_interp: all non-flat -> per-sample
500 // flatshade: all color -> flat
501 // alphatest: PIPE_FUNC_* to use with alphatest
502 // msaa: false = sample id -> 0 for interpolateAtSample
503 nv50_ir::FixupData data(force_persample_interp, flatshade, alphatest, msaa);
504 for (unsigned i = 0; i < info->count; ++i)
505 info->entry[i].apply(&info->entry[i], code, data);
506 }
507
508 void
nv50_ir_get_target_library(uint32_t chipset,const uint32_t ** code,uint32_t * size)509 nv50_ir_get_target_library(uint32_t chipset,
510 const uint32_t **code, uint32_t *size)
511 {
512 nv50_ir::Target *targ = nv50_ir::Target::create(chipset);
513 targ->getBuiltinCode(code, size);
514 nv50_ir::Target::destroy(targ);
515 }
516
517 }
518