1 // Licensed to the .NET Foundation under one or more agreements.
2 // The .NET Foundation licenses this file to you under the MIT license.
3 // See the LICENSE file in the project root for more information.
5 /*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
6 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
10 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
11 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
19 #if defined(_TARGET_ARM64_)
21 /*****************************************************************************/
22 /*****************************************************************************/
28 /* static */ bool emitter::strictArmAsm = true;
30 /*****************************************************************************/
32 const instruction emitJumpKindInstructions[] = {
35 #define JMP_SMALL(en, rev, ins) INS_##ins,
39 const emitJumpKind emitReverseJumpKinds[] = {
42 #define JMP_SMALL(en, rev, ins) EJ_##rev,
46 /*****************************************************************************
47 * Look up the instruction for a jump kind
50 /*static*/ instruction emitter::emitJumpKindToIns(emitJumpKind jumpKind)
52 assert((unsigned)jumpKind < ArrLen(emitJumpKindInstructions));
53 return emitJumpKindInstructions[jumpKind];
56 /*****************************************************************************
57 * Look up the jump kind for an instruction. It better be a conditional
58 * branch instruction with a jump kind!
61 /*static*/ emitJumpKind emitter::emitInsToJumpKind(instruction ins)
63 for (unsigned i = 0; i < ArrLen(emitJumpKindInstructions); i++)
65 if (ins == emitJumpKindInstructions[i])
67 emitJumpKind ret = (emitJumpKind)i;
68 assert(EJ_NONE < ret && ret < EJ_COUNT);
75 /*****************************************************************************
76 * Reverse the conditional jump
79 /*static*/ emitJumpKind emitter::emitReverseJumpKind(emitJumpKind jumpKind)
81 assert(jumpKind < EJ_COUNT);
82 return emitReverseJumpKinds[jumpKind];
85 /*****************************************************************************
87 * Return the allocated size (in bytes) of the given instruction descriptor.
90 size_t emitter::emitSizeOfInsDsc(instrDesc* id)
92 assert(!emitIsTinyInsDsc(id));
94 if (emitIsScnsInsDsc(id))
95 return SMALL_IDSC_SIZE;
97 assert((unsigned)id->idInsFmt() < emitFmtCount);
99 ID_OPS idOp = (ID_OPS)emitFmtToOps[id->idInsFmt()];
100 bool isCallIns = (id->idIns() == INS_bl) || (id->idIns() == INS_blr) || (id->idIns() == INS_b_tail) ||
101 (id->idIns() == INS_br_tail);
102 bool maybeCallIns = (id->idIns() == INS_b) || (id->idIns() == INS_br);
110 return sizeof(instrDescJmp);
113 assert(isCallIns || maybeCallIns);
114 if (id->idIsLargeCall())
116 /* Must be a "fat" call descriptor */
117 return sizeof(instrDescCGCA);
121 assert(!id->idIsLargeDsp());
122 assert(!id->idIsLargeCns());
123 return sizeof(instrDesc);
128 NO_WAY("unexpected instruction descriptor format");
132 if (id->idIsLargeCns())
134 if (id->idIsLargeDsp())
135 return sizeof(instrDescCnsDsp);
137 return sizeof(instrDescCns);
141 if (id->idIsLargeDsp())
142 return sizeof(instrDescDsp);
144 return sizeof(instrDesc);
149 /*****************************************************************************
151 * The following called for each recorded instruction -- use for debugging.
153 void emitter::emitInsSanityCheck(instrDesc* id)
155 /* What instruction format have we got? */
157 switch (id->idInsFmt())
169 case IF_BI_0A: // BI_0A ......iiiiiiiiii iiiiiiiiiiiiiiii simm26:00
172 case IF_BI_0B: // BI_0B ......iiiiiiiiii iiiiiiiiiiii.... simm19:00
180 case IF_BI_0C: // BI_0C ......iiiiiiiiii iiiiiiiiiiiiiiii simm26:00
183 case IF_BI_1A: // BI_1A ......iiiiiiiiii iiiiiiiiiiittttt Rt simm19:00
184 assert(isValidGeneralDatasize(id->idOpSize()));
185 assert(isGeneralRegister(id->idReg1()));
188 case IF_BI_1B: // BI_1B B.......bbbbbiii iiiiiiiiiiittttt Rt imm6, simm14:00
189 assert(isValidGeneralDatasize(id->idOpSize()));
190 assert(isGeneralRegister(id->idReg1()));
191 assert(isValidImmShift(emitGetInsSC(id), id->idOpSize()));
194 case IF_BR_1A: // BR_1A ................ ......nnnnn..... Rn
195 assert(isGeneralRegister(id->idReg1()));
198 case IF_BR_1B: // BR_1B ................ ......nnnnn..... Rn
199 assert(isGeneralRegister(id->idReg3()));
202 case IF_LS_1A: // LS_1A .X......iiiiiiii iiiiiiiiiiittttt Rt PC imm(1MB)
203 assert(isGeneralRegister(id->idReg1()) || isVectorRegister(id->idReg1()));
204 assert(insOptsNone(id->idInsOpt()));
207 case IF_LS_2A: // LS_2A .X.......X...... ......nnnnnttttt Rt Rn
208 assert(isIntegerRegister(id->idReg1()) || // ZR
209 isVectorRegister(id->idReg1()));
210 assert(isIntegerRegister(id->idReg2())); // SP
211 assert(emitGetInsSC(id) == 0);
212 assert(insOptsNone(id->idInsOpt()));
215 case IF_LS_2B: // LS_2B .X.......Xiiiiii iiiiiinnnnnttttt Rt Rn imm(0-4095)
216 assert(isIntegerRegister(id->idReg1()) || // ZR
217 isVectorRegister(id->idReg1()));
218 assert(isIntegerRegister(id->idReg2())); // SP
219 assert(isValidUimm12(emitGetInsSC(id)));
220 assert(insOptsNone(id->idInsOpt()));
223 case IF_LS_2C: // LS_2C .X.......X.iiiii iiiiPPnnnnnttttt Rt Rn imm(-256..+255) no/pre/post inc
224 assert(isIntegerRegister(id->idReg1()) || // ZR
225 isVectorRegister(id->idReg1()));
226 assert(isIntegerRegister(id->idReg2())); // SP
227 assert(emitGetInsSC(id) >= -0x100);
228 assert(emitGetInsSC(id) < 0x100);
229 assert(insOptsNone(id->idInsOpt()) || insOptsIndexed(id->idInsOpt()));
232 case IF_LS_3A: // LS_3A .X.......X.mmmmm oooS..nnnnnttttt Rt Rn Rm ext(Rm) LSL {}
233 assert(isIntegerRegister(id->idReg1()) || // ZR
234 isVectorRegister(id->idReg1()));
235 assert(isIntegerRegister(id->idReg2())); // SP
236 if (id->idIsLclVar())
238 assert(isGeneralRegister(codeGen->rsGetRsvdReg()));
242 assert(isGeneralRegister(id->idReg3()));
244 assert(insOptsLSExtend(id->idInsOpt()));
247 case IF_LS_3B: // LS_3B X............... .aaaaannnnnttttt Rt Ra Rn
248 assert((isValidGeneralDatasize(id->idOpSize()) && isIntegerRegister(id->idReg1())) ||
249 (isValidVectorLSPDatasize(id->idOpSize()) && isVectorRegister(id->idReg1())));
250 assert(isIntegerRegister(id->idReg1()) || // ZR
251 isVectorRegister(id->idReg1()));
252 assert(isIntegerRegister(id->idReg2()) || // ZR
253 isVectorRegister(id->idReg2()));
254 assert(isIntegerRegister(id->idReg3())); // SP
255 assert(emitGetInsSC(id) == 0);
256 assert(insOptsNone(id->idInsOpt()));
259 case IF_LS_3C: // LS_3C X.........iiiiii iaaaaannnnnttttt Rt Ra Rn imm(im7,sh)
260 assert((isValidGeneralDatasize(id->idOpSize()) && isIntegerRegister(id->idReg1())) ||
261 (isValidVectorLSPDatasize(id->idOpSize()) && isVectorRegister(id->idReg1())));
262 assert(isIntegerRegister(id->idReg1()) || // ZR
263 isVectorRegister(id->idReg1()));
264 assert(isIntegerRegister(id->idReg2()) || // ZR
265 isVectorRegister(id->idReg2()));
266 assert(isIntegerRegister(id->idReg3())); // SP
267 assert(emitGetInsSC(id) >= -0x40);
268 assert(emitGetInsSC(id) < 0x40);
269 assert(insOptsNone(id->idInsOpt()) || insOptsIndexed(id->idInsOpt()));
272 case IF_LS_3D: // LS_3D .X.......X.mmmmm ......nnnnnttttt Wm Rt Rn
273 assert(isIntegerRegister(id->idReg1()));
274 assert(isIntegerRegister(id->idReg2()));
275 assert(isIntegerRegister(id->idReg3()));
276 assert(emitGetInsSC(id) == 0);
277 assert(!id->idIsLclVar());
278 assert(insOptsNone(id->idInsOpt()));
281 case IF_DI_1A: // DI_1A X.......shiiiiii iiiiiinnnnn..... Rn imm(i12,sh)
282 assert(isValidGeneralDatasize(id->idOpSize()));
283 assert(isGeneralRegister(id->idReg1()));
284 assert(isValidUimm12(emitGetInsSC(id)));
285 assert(insOptsNone(id->idInsOpt()) || insOptsLSL12(id->idInsOpt()));
288 case IF_DI_1B: // DI_1B X........hwiiiii iiiiiiiiiiiddddd Rd imm(i16,hw)
289 assert(isValidGeneralDatasize(id->idOpSize()));
290 assert(isGeneralRegister(id->idReg1()));
291 assert(isValidImmHWVal(emitGetInsSC(id), id->idOpSize()));
294 case IF_DI_1C: // DI_1C X........Nrrrrrr ssssssnnnnn..... Rn imm(N,r,s)
295 assert(isValidGeneralDatasize(id->idOpSize()));
296 assert(isGeneralRegister(id->idReg1()));
297 assert(isValidImmNRS(emitGetInsSC(id), id->idOpSize()));
300 case IF_DI_1D: // DI_1D X........Nrrrrrr ssssss.....ddddd Rd imm(N,r,s)
301 assert(isValidGeneralDatasize(id->idOpSize()));
302 assert(isIntegerRegister(id->idReg1())); // SP
303 assert(isValidImmNRS(emitGetInsSC(id), id->idOpSize()));
306 case IF_DI_1E: // DI_1E .ii.....iiiiiiii iiiiiiiiiiiddddd Rd simm21
307 assert(isGeneralRegister(id->idReg1()));
310 case IF_DI_1F: // DI_1F X..........iiiii cccc..nnnnn.nzcv Rn imm5 nzcv cond
311 assert(isValidGeneralDatasize(id->idOpSize()));
312 assert(isGeneralRegister(id->idReg1()));
313 assert(isValidImmCondFlagsImm5(emitGetInsSC(id)));
316 case IF_DI_2A: // DI_2A X.......shiiiiii iiiiiinnnnnddddd Rd Rn imm(i12,sh)
317 assert(isValidGeneralDatasize(id->idOpSize()));
318 assert(isIntegerRegister(id->idReg1())); // SP
319 assert(isIntegerRegister(id->idReg2())); // SP
320 assert(isValidUimm12(emitGetInsSC(id)));
321 assert(insOptsNone(id->idInsOpt()) || insOptsLSL12(id->idInsOpt()));
324 case IF_DI_2B: // DI_2B X.........Xnnnnn ssssssnnnnnddddd Rd Rn imm(0-63)
325 assert(isValidGeneralDatasize(id->idOpSize()));
326 assert(isGeneralRegister(id->idReg1()));
327 assert(isGeneralRegister(id->idReg2()));
328 assert(isValidImmShift(emitGetInsSC(id), id->idOpSize()));
331 case IF_DI_2C: // DI_2C X........Nrrrrrr ssssssnnnnnddddd Rd Rn imm(N,r,s)
332 assert(isValidGeneralDatasize(id->idOpSize()));
333 assert(isIntegerRegister(id->idReg1())); // SP
334 assert(isGeneralRegister(id->idReg2()));
335 assert(isValidImmNRS(emitGetInsSC(id), id->idOpSize()));
338 case IF_DI_2D: // DI_2D X........Nrrrrrr ssssssnnnnnddddd Rd Rn imr, imms (N,r,s)
339 assert(isValidGeneralDatasize(id->idOpSize()));
340 assert(isGeneralRegister(id->idReg1()));
341 assert(isGeneralRegister(id->idReg2()));
342 assert(isValidImmNRS(emitGetInsSC(id), id->idOpSize()));
345 case IF_DR_1D: // DR_1D X............... cccc.......ddddd Rd cond
346 assert(isValidGeneralDatasize(id->idOpSize()));
347 assert(isGeneralRegister(id->idReg1()));
348 assert(isValidImmCond(emitGetInsSC(id)));
351 case IF_DR_2A: // DR_2A X..........mmmmm ......nnnnn..... Rn Rm
352 assert(isValidGeneralDatasize(id->idOpSize()));
353 assert(isGeneralRegister(id->idReg1()));
354 assert(isGeneralRegister(id->idReg2()));
357 case IF_DR_2B: // DR_2B X.......sh.mmmmm ssssssnnnnn..... Rn Rm {LSL,LSR,ASR,ROR} imm(0-63)
358 assert(isValidGeneralDatasize(id->idOpSize()));
359 assert(isIntegerRegister(id->idReg1())); // ZR
360 assert(isGeneralRegister(id->idReg2()));
361 assert(isValidImmShift(emitGetInsSC(id), id->idOpSize()));
362 if (!insOptsNone(id->idInsOpt()))
364 if (id->idIns() == INS_tst) // tst allows ROR, cmp/cmn don't
366 assert(insOptsAnyShift(id->idInsOpt()));
370 assert(insOptsAluShift(id->idInsOpt()));
373 assert(insOptsNone(id->idInsOpt()) || (emitGetInsSC(id) > 0));
376 case IF_DR_2C: // DR_2C X..........mmmmm ooosssnnnnn..... Rn Rm ext(Rm) LSL imm(0-4)
377 assert(isValidGeneralDatasize(id->idOpSize()));
378 assert(isIntegerRegister(id->idReg1())); // SP
379 assert(isGeneralRegister(id->idReg2()));
380 assert(insOptsNone(id->idInsOpt()) || insOptsLSL(id->idInsOpt()) || insOptsAnyExtend(id->idInsOpt()));
381 assert(emitGetInsSC(id) >= 0);
382 assert(emitGetInsSC(id) <= 4);
383 if (insOptsLSL(id->idInsOpt()))
385 assert(emitGetInsSC(id) > 0);
389 case IF_DR_2D: // DR_2D X..........nnnnn cccc..nnnnnmmmmm Rd Rn cond
390 assert(isValidGeneralDatasize(id->idOpSize()));
391 assert(isGeneralRegister(id->idReg1()));
392 assert(isGeneralRegister(id->idReg2()));
393 assert(isValidImmCond(emitGetInsSC(id)));
396 case IF_DR_2E: // DR_2E X..........mmmmm ...........ddddd Rd Rm
397 assert(isValidGeneralDatasize(id->idOpSize()));
398 assert(isGeneralRegister(id->idReg1()));
399 assert(isIntegerRegister(id->idReg2())); // ZR
402 case IF_DR_2F: // DR_2F X.......sh.mmmmm ssssss.....ddddd Rd Rm {LSL,LSR,ASR} imm(0-63)
403 assert(isValidGeneralDatasize(id->idOpSize()));
404 assert(isGeneralRegister(id->idReg1()));
405 assert(isGeneralRegister(id->idReg2()));
406 assert(isValidImmShift(emitGetInsSC(id), id->idOpSize()));
407 assert(insOptsNone(id->idInsOpt()) || insOptsAluShift(id->idInsOpt()));
408 assert(insOptsNone(id->idInsOpt()) || (emitGetInsSC(id) > 0));
411 case IF_DR_2G: // DR_2G X............... ......nnnnnddddd Rd Rm
412 assert(isValidGeneralDatasize(id->idOpSize()));
413 assert(isIntegerRegister(id->idReg1())); // SP
414 assert(isIntegerRegister(id->idReg2())); // SP
417 case IF_DR_2H: // DR_2H X........X...... ......nnnnnddddd Rd Rn
418 assert(isValidGeneralDatasize(id->idOpSize()));
419 assert(isGeneralRegister(id->idReg1()));
420 assert(isGeneralRegister(id->idReg2()));
423 case IF_DR_2I: // DR_2I X..........mmmmm cccc..nnnnn.nzcv Rn Rm nzcv cond
424 assert(isValidGeneralDatasize(id->idOpSize()));
425 assert(isGeneralRegister(id->idReg1()));
426 assert(isGeneralRegister(id->idReg2()));
427 assert(isValidImmCondFlags(emitGetInsSC(id)));
430 case IF_DR_3A: // DR_3A X..........mmmmm ......nnnnnmmmmm Rd Rn Rm
431 assert(isValidGeneralDatasize(id->idOpSize()));
432 assert(isIntegerRegister(id->idReg1())); // SP
433 assert(isIntegerRegister(id->idReg2())); // SP
434 if (id->idIsLclVar())
436 assert(isGeneralRegister(codeGen->rsGetRsvdReg()));
440 assert(isGeneralRegister(id->idReg3()));
442 assert(insOptsNone(id->idInsOpt()));
445 case IF_DR_3B: // DR_3B X.......sh.mmmmm ssssssnnnnnddddd Rd Rn Rm {LSL,LSR,ASR,ROR} imm(0-63)
446 assert(isValidGeneralDatasize(id->idOpSize()));
447 assert(isGeneralRegister(id->idReg1()));
448 assert(isGeneralRegister(id->idReg2()));
449 assert(isGeneralRegister(id->idReg3()));
450 assert(isValidImmShift(emitGetInsSC(id), id->idOpSize()));
451 assert(insOptsNone(id->idInsOpt()) || insOptsAnyShift(id->idInsOpt()));
452 assert(insOptsNone(id->idInsOpt()) || (emitGetInsSC(id) > 0));
455 case IF_DR_3C: // DR_3C X..........mmmmm ooosssnnnnnddddd Rd Rn Rm ext(Rm) LSL imm(0-4)
456 assert(isValidGeneralDatasize(id->idOpSize()));
457 assert(isIntegerRegister(id->idReg1())); // SP
458 assert(isIntegerRegister(id->idReg2())); // SP
459 assert(isGeneralRegister(id->idReg3()));
460 assert(insOptsNone(id->idInsOpt()) || insOptsLSL(id->idInsOpt()) || insOptsAnyExtend(id->idInsOpt()));
461 assert(emitGetInsSC(id) >= 0);
462 assert(emitGetInsSC(id) <= 4);
463 if (insOptsLSL(id->idInsOpt()))
465 assert((emitGetInsSC(id) > 0) ||
466 (id->idReg2() == REG_ZR)); // REG_ZR encodes SP and we allow a shift of zero
470 case IF_DR_3D: // DR_3D X..........mmmmm cccc..nnnnnmmmmm Rd Rn Rm cond
471 assert(isValidGeneralDatasize(id->idOpSize()));
472 assert(isGeneralRegister(id->idReg1()));
473 assert(isGeneralRegister(id->idReg2()));
474 assert(isGeneralRegister(id->idReg3()));
475 assert(isValidImmCond(emitGetInsSC(id)));
478 case IF_DR_3E: // DR_3E X........X.mmmmm ssssssnnnnnddddd Rd Rn Rm imm(0-63)
479 assert(isValidGeneralDatasize(id->idOpSize()));
480 assert(isGeneralRegister(id->idReg1()));
481 assert(isGeneralRegister(id->idReg2()));
482 assert(isGeneralRegister(id->idReg3()));
483 assert(isValidImmShift(emitGetInsSC(id), id->idOpSize()));
484 assert(insOptsNone(id->idInsOpt()));
487 case IF_DR_4A: // DR_4A X..........mmmmm .aaaaannnnnddddd Rd Rn Rm Ra
488 assert(isValidGeneralDatasize(id->idOpSize()));
489 assert(isGeneralRegister(id->idReg1()));
490 assert(isGeneralRegister(id->idReg2()));
491 assert(isGeneralRegister(id->idReg3()));
492 assert(isGeneralRegister(id->idReg4()));
495 case IF_DV_1A: // DV_1A .........X.iiiii iii........ddddd Vd imm8 (fmov - immediate scalar)
496 assert(insOptsNone(id->idInsOpt()));
497 elemsize = id->idOpSize();
498 assert(isValidVectorElemsizeFloat(elemsize));
499 assert(isVectorRegister(id->idReg1()));
500 assert(isValidUimm8(emitGetInsSC(id)));
503 case IF_DV_1B: // DV_1B .QX..........iii cmod..iiiiiddddd Vd imm8 (immediate vector)
505 imm = emitGetInsSC(id) & 0x0ff;
506 immShift = (emitGetInsSC(id) & 0x700) >> 8;
507 assert(immShift >= 0);
508 datasize = id->idOpSize();
509 assert(isValidVectorDatasize(datasize));
510 assert(isValidArrangement(datasize, id->idInsOpt()));
511 elemsize = optGetElemsize(id->idInsOpt());
514 assert(isValidVectorElemsizeFloat(elemsize));
515 assert(id->idInsOpt() != INS_OPTS_1D); // Reserved encoding
516 assert(immShift == 0);
520 assert(isValidVectorElemsize(elemsize));
521 assert((immShift != 4) && (immShift != 7)); // always invalid values
522 if (ins != INS_movi) // INS_mvni, INS_orr, INS_bic
524 assert((elemsize != EA_1BYTE) && (elemsize != EA_8BYTE)); // only H or S
525 if (elemsize == EA_2BYTE)
527 assert(immShift < 2);
529 else // (elemsize == EA_4BYTE)
533 assert(immShift < 4);
538 assert(isVectorRegister(id->idReg1()));
539 assert(isValidUimm8(imm));
542 case IF_DV_1C: // DV_1C .........X...... ......nnnnn..... Vn #0.0 (fcmp - with zero)
543 assert(insOptsNone(id->idInsOpt()));
544 elemsize = id->idOpSize();
545 assert(isValidVectorElemsizeFloat(elemsize));
546 assert(isVectorRegister(id->idReg1()));
549 case IF_DV_2A: // DV_2A .Q.......X...... ......nnnnnddddd Vd Vn (fabs, fcvt - vector)
550 case IF_DV_2M: // DV_2M .Q......XX...... ......nnnnnddddd Vd Vn (abs, neg - vector)
551 assert(isValidVectorDatasize(id->idOpSize()));
552 assert(isValidArrangement(id->idOpSize(), id->idInsOpt()));
553 assert(isVectorRegister(id->idReg1()));
554 assert(isVectorRegister(id->idReg2()));
557 case IF_DV_2N: // DV_2N .........iiiiiii ......nnnnnddddd Vd Vn imm (shift - scalar)
558 assert(id->idOpSize() == EA_8BYTE);
559 assert(insOptsNone(id->idInsOpt()));
560 assert(isVectorRegister(id->idReg1()));
561 assert(isVectorRegister(id->idReg2()));
562 assert(isValidImmShift(emitGetInsSC(id), EA_8BYTE));
565 case IF_DV_2O: // DV_2O .Q.......iiiiiii ......nnnnnddddd Vd Vn imm (shift - vector)
566 assert(isValidVectorDatasize(id->idOpSize()));
567 assert(isValidArrangement(id->idOpSize(), id->idInsOpt()));
568 assert(isVectorRegister(id->idReg1()));
569 assert(isVectorRegister(id->idReg2()));
570 elemsize = optGetElemsize(id->idInsOpt());
571 assert(isValidImmShift(emitGetInsSC(id), elemsize));
574 case IF_DV_2B: // DV_2B .Q.........iiiii ......nnnnnddddd Rd Vn[] (umov/smov - to general)
575 elemsize = id->idOpSize();
576 index = emitGetInsSC(id);
577 assert(insOptsNone(id->idInsOpt()));
578 assert(isValidVectorIndex(EA_16BYTE, elemsize, index));
579 assert(isValidVectorElemsize(elemsize));
580 assert(isGeneralRegister(id->idReg1()));
581 assert(isVectorRegister(id->idReg2()));
584 case IF_DV_2C: // DV_2C .Q.........iiiii ......nnnnnddddd Vd Rn (dup/ins - vector from general)
585 if (id->idIns() == INS_dup)
587 datasize = id->idOpSize();
588 assert(isValidVectorDatasize(datasize));
589 assert(isValidArrangement(datasize, id->idInsOpt()));
590 elemsize = optGetElemsize(id->idInsOpt());
594 datasize = EA_16BYTE;
595 elemsize = id->idOpSize();
596 assert(isValidVectorElemsize(elemsize));
598 assert(isVectorRegister(id->idReg1()));
599 assert(isGeneralRegisterOrZR(id->idReg2()));
602 case IF_DV_2D: // DV_2D .Q.........iiiii ......nnnnnddddd Vd Vn[] (dup - vector)
603 datasize = id->idOpSize();
604 assert(isValidVectorDatasize(datasize));
605 assert(isValidArrangement(datasize, id->idInsOpt()));
606 elemsize = optGetElemsize(id->idInsOpt());
607 index = emitGetInsSC(id);
608 assert(isValidVectorIndex(datasize, elemsize, index));
609 assert(isVectorRegister(id->idReg1()));
610 assert(isVectorRegister(id->idReg2()));
613 case IF_DV_2E: // DV_2E ...........iiiii ......nnnnnddddd Vd Vn[] (dup - scalar)
614 elemsize = id->idOpSize();
615 index = emitGetInsSC(id);
616 assert(isValidVectorIndex(EA_16BYTE, elemsize, index));
617 assert(isValidVectorElemsize(elemsize));
618 assert(isVectorRegister(id->idReg1()));
619 assert(isVectorRegister(id->idReg2()));
622 case IF_DV_2F: // DV_2F ...........iiiii .jjjj.nnnnnddddd Vd[] Vn[] (ins - element)
623 imm = emitGetInsSC(id);
624 index = (imm >> 4) & 0xf;
626 elemsize = id->idOpSize();
627 assert(isValidVectorElemsize(elemsize));
628 assert(isValidVectorIndex(EA_16BYTE, elemsize, index));
629 assert(isValidVectorIndex(EA_16BYTE, elemsize, index2));
630 assert(isVectorRegister(id->idReg1()));
631 assert(isVectorRegister(id->idReg2()));
634 case IF_DV_2L: // DV_2L ........XX...... ......nnnnnddddd Vd Vn (abs, neg - scalar)
635 assert(id->idOpSize() == EA_8BYTE); // only type D is supported
638 case IF_DV_2G: // DV_2G .........X...... ......nnnnnddddd Vd Vn (fmov, fcvtXX - register)
639 case IF_DV_2K: // DV_2K .........X.mmmmm ......nnnnn..... Vn Vm (fcmp)
640 assert(insOptsNone(id->idInsOpt()));
641 assert(isValidVectorElemsizeFloat(id->idOpSize()));
642 assert(isVectorRegister(id->idReg1()));
643 assert(isVectorRegister(id->idReg2()));
646 case IF_DV_2H: // DV_2H X........X...... ......nnnnnddddd Rd Vn (fmov/fcvtXX - to general)
647 assert(insOptsConvertFloatToInt(id->idInsOpt()));
648 dstsize = optGetDstsize(id->idInsOpt());
649 srcsize = optGetSrcsize(id->idInsOpt());
650 assert(isValidGeneralDatasize(dstsize));
651 assert(isValidVectorElemsizeFloat(srcsize));
652 assert(dstsize == id->idOpSize());
653 assert(isGeneralRegister(id->idReg1()));
654 assert(isVectorRegister(id->idReg2()));
657 case IF_DV_2I: // DV_2I X........X...... ......nnnnnddddd Vd Rn (fmov/Xcvtf - from general)
658 assert(insOptsConvertIntToFloat(id->idInsOpt()));
659 dstsize = optGetDstsize(id->idInsOpt());
660 srcsize = optGetSrcsize(id->idInsOpt());
661 assert(isValidGeneralDatasize(srcsize));
662 assert(isValidVectorElemsizeFloat(dstsize));
663 assert(dstsize == id->idOpSize());
664 assert(isVectorRegister(id->idReg1()));
665 assert(isGeneralRegister(id->idReg2()));
668 case IF_DV_2J: // DV_2J ........SS.....D D.....nnnnnddddd Vd Vn (fcvt)
669 assert(insOptsConvertFloatToFloat(id->idInsOpt()));
670 dstsize = optGetDstsize(id->idInsOpt());
671 srcsize = optGetSrcsize(id->idInsOpt());
672 assert(isValidVectorFcvtsize(srcsize));
673 assert(isValidVectorFcvtsize(dstsize));
674 assert(dstsize == id->idOpSize());
675 assert(isVectorRegister(id->idReg1()));
676 assert(isVectorRegister(id->idReg2()));
679 case IF_DV_3A: // DV_3A .Q......XX.mmmmm ......nnnnnddddd Vd Vn Vm (vector)
680 assert(isValidVectorDatasize(id->idOpSize()));
681 assert(isValidArrangement(id->idOpSize(), id->idInsOpt()));
682 assert(isVectorRegister(id->idReg1()));
683 assert(isVectorRegister(id->idReg2()));
684 assert(isVectorRegister(id->idReg3()));
685 elemsize = optGetElemsize(id->idInsOpt());
689 assert(elemsize != EA_8BYTE); // can't use 2D or 1D
691 else if (ins == INS_pmul)
693 assert(elemsize == EA_1BYTE); // only supports 8B or 16B
697 case IF_DV_3AI: // DV_3AI .Q......XXLMmmmm ....H.nnnnnddddd Vd Vn Vm[] (vector by elem)
698 assert(isValidVectorDatasize(id->idOpSize()));
699 assert(isValidArrangement(id->idOpSize(), id->idInsOpt()));
700 assert(isVectorRegister(id->idReg1()));
701 assert(isVectorRegister(id->idReg2()));
702 assert(isVectorRegister(id->idReg3()));
703 elemsize = optGetElemsize(id->idInsOpt());
704 assert(isValidVectorIndex(EA_16BYTE, elemsize, emitGetInsSC(id)));
705 // Only has encodings for H or S elemsize
706 assert((elemsize == EA_2BYTE) || (elemsize == EA_4BYTE));
709 case IF_DV_3B: // DV_3B .Q.......X.mmmmm ......nnnnnddddd Vd Vn Vm (vector)
710 assert(isValidVectorDatasize(id->idOpSize()));
711 assert(isValidArrangement(id->idOpSize(), id->idInsOpt()));
712 assert(isVectorRegister(id->idReg1()));
713 assert(isVectorRegister(id->idReg2()));
714 assert(isVectorRegister(id->idReg3()));
717 case IF_DV_3BI: // DV_3BI .Q.......XLmmmmm ....H.nnnnnddddd Vd Vn Vm[] (vector by elem)
718 assert(isValidVectorDatasize(id->idOpSize()));
719 assert(isValidArrangement(id->idOpSize(), id->idInsOpt()));
720 assert(isVectorRegister(id->idReg1()));
721 assert(isVectorRegister(id->idReg2()));
722 assert(isVectorRegister(id->idReg3()));
723 elemsize = optGetElemsize(id->idInsOpt());
724 assert(isValidVectorIndex(id->idOpSize(), elemsize, emitGetInsSC(id)));
727 case IF_DV_3C: // DV_3C .Q.........mmmmm ......nnnnnddddd Vd Vn Vm (vector)
728 assert(isValidVectorDatasize(id->idOpSize()));
729 assert(isValidArrangement(id->idOpSize(), id->idInsOpt()));
730 assert(isVectorRegister(id->idReg1()));
731 assert(isVectorRegister(id->idReg2()));
732 assert(isVectorRegister(id->idReg3()));
735 case IF_DV_3D: // DV_3D .........X.mmmmm ......nnnnnddddd Vd Vn Vm (scalar)
736 assert(isValidScalarDatasize(id->idOpSize()));
737 assert(insOptsNone(id->idInsOpt()));
738 assert(isVectorRegister(id->idReg1()));
739 assert(isVectorRegister(id->idReg2()));
740 assert(isVectorRegister(id->idReg3()));
743 case IF_DV_3DI: // DV_3DI .........XLmmmmm ....H.nnnnnddddd Vd Vn Vm[] (scalar by elem)
744 assert(isValidScalarDatasize(id->idOpSize()));
745 assert(insOptsNone(id->idInsOpt()));
746 assert(isVectorRegister(id->idReg1()));
747 assert(isVectorRegister(id->idReg2()));
748 assert(isVectorRegister(id->idReg3()));
749 elemsize = id->idOpSize();
750 assert(isValidVectorIndex(EA_16BYTE, elemsize, emitGetInsSC(id)));
753 case IF_DV_3E: // DV_3E ...........mmmmm ......nnnnnddddd Vd Vn Vm (scalar)
754 assert(insOptsNone(id->idInsOpt()));
755 assert(id->idOpSize() == EA_8BYTE);
756 assert(isVectorRegister(id->idReg1()));
757 assert(isVectorRegister(id->idReg2()));
758 assert(isVectorRegister(id->idReg3()));
761 case IF_DV_4A: // DR_4A .........X.mmmmm .aaaaannnnnddddd Rd Rn Rm Ra (scalar)
762 assert(isValidGeneralDatasize(id->idOpSize()));
763 assert(isVectorRegister(id->idReg1()));
764 assert(isVectorRegister(id->idReg2()));
765 assert(isVectorRegister(id->idReg3()));
766 assert(isVectorRegister(id->idReg4()));
769 case IF_SN_0A: // SN_0A ................ ................
770 case IF_SI_0A: // SI_0A ...........iiiii iiiiiiiiiii..... imm16
771 case IF_SI_0B: // SI_0B ................ ....bbbb........ imm4 - barrier
775 printf("unexpected format %s\n", emitIfName(id->idInsFmt()));
776 assert(!"Unexpected format");
782 bool emitter::emitInsMayWriteToGCReg(instrDesc* id)
784 instruction ins = id->idIns();
785 insFormat fmt = id->idInsFmt();
790 // These are the formats with "destination" registers:
792 case IF_DI_1B: // DI_1B X........hwiiiii iiiiiiiiiiiddddd Rd imm(i16,hw)
793 case IF_DI_1D: // DI_1D X........Nrrrrrr ssssss.....ddddd Rd imm(N,r,s)
794 case IF_DI_1E: // DI_1E .ii.....iiiiiiii iiiiiiiiiiiddddd Rd simm21
796 case IF_DI_2A: // DI_2A X.......shiiiiii iiiiiinnnnnddddd Rd Rn imm(i12,sh)
797 case IF_DI_2B: // DI_2B X.........Xnnnnn ssssssnnnnnddddd Rd Rn imm(0-63)
798 case IF_DI_2C: // DI_2C X........Nrrrrrr ssssssnnnnnddddd Rd Rn imm(N,r,s)
799 case IF_DI_2D: // DI_2D X........Nrrrrrr ssssssnnnnnddddd Rd Rn imr, imms (N,r,s)
801 case IF_DR_1D: // DR_1D X............... cccc.......ddddd Rd cond
803 case IF_DR_2D: // DR_2D X..........nnnnn cccc..nnnnnddddd Rd Rn cond
804 case IF_DR_2E: // DR_2E X..........mmmmm ...........ddddd Rd Rm
805 case IF_DR_2F: // DR_2F X.......sh.mmmmm ssssss.....ddddd Rd Rm {LSL,LSR,ASR} imm(0-63)
806 case IF_DR_2G: // DR_2G X............... ......nnnnnddddd Rd Rn
807 case IF_DR_2H: // DR_2H X........X...... ......nnnnnddddd Rd Rn
809 case IF_DR_3A: // DR_3A X..........mmmmm ......nnnnnddddd Rd Rn Rm
810 case IF_DR_3B: // DR_3B X.......sh.mmmmm ssssssnnnnnddddd Rd Rn Rm {LSL,LSR,ASR} imm(0-63)
811 case IF_DR_3C: // DR_3C X..........mmmmm xxxsssnnnnnddddd Rd Rn Rm ext(Rm) LSL imm(0-4)
812 case IF_DR_3D: // DR_3D X..........mmmmm cccc..nnnnnddddd Rd Rn Rm cond
813 case IF_DR_3E: // DR_3E X........X.mmmmm ssssssnnnnnddddd Rd Rn Rm imm(0-63)
815 case IF_DR_4A: // DR_4A X..........mmmmm .aaaaannnnnddddd Rd Rn Rm Ra
817 case IF_DV_2B: // DV_2B .Q.........iiiii ......nnnnnddddd Rd Vn[] (umov - to general)
818 case IF_DV_2H: // DV_2H X........X...... ......nnnnnddddd Rd Vn (fmov - to general)
822 case IF_DV_2C: // DV_2C .Q.........iiiii ......nnnnnddddd Vd Rn (dup/ins - vector from general)
823 case IF_DV_2D: // DV_2D .Q.........iiiii ......nnnnnddddd Vd Vn[] (dup - vector)
824 case IF_DV_2E: // DV_2E ...........iiiii ......nnnnnddddd Vd Vn[] (dup - scalar)
825 case IF_DV_2F: // DV_2F ...........iiiii .jjjj.nnnnnddddd Vd[] Vn[] (ins - element)
826 case IF_DV_2G: // DV_2G .........X...... ......nnnnnddddd Vd Vn (fmov, fcvtXX - register)
827 case IF_DV_2I: // DV_2I X........X...... ......nnnnnddddd Vd Rn (fmov - from general)
828 case IF_DV_2J: // DV_2J ........SS.....D D.....nnnnnddddd Vd Vn (fcvt)
829 case IF_DV_2K: // DV_2K .........X.mmmmm ......nnnnn..... Vn Vm (fcmp)
830 case IF_DV_2L: // DV_2L ........XX...... ......nnnnnddddd Vd Vn (abs, neg - scalar)
831 case IF_DV_2M: // DV_2M .Q......XX...... ......nnnnnddddd Vd Vn (abs, neg - vector)
832 case IF_DV_3A: // DV_3A .Q......XX.mmmmm ......nnnnnddddd Vd Vn Vm (vector)
833 case IF_DV_3AI: // DV_3AI .Q......XXLMmmmm ....H.nnnnnddddd Vd Vn Vm[] (vector)
834 case IF_DV_3B: // DV_3B .Q.......X.mmmmm ......nnnnnddddd Vd Vn Vm (vector)
835 case IF_DV_3BI: // DV_3BI .Q.......XLmmmmm ....H.nnnnnddddd Vd Vn Vm[] (vector by elem)
836 case IF_DV_3C: // DV_3C .Q.........mmmmm ......nnnnnddddd Vd Vn Vm (vector)
837 case IF_DV_3D: // DV_3D .........X.mmmmm ......nnnnnddddd Vd Vn Vm (scalar)
838 case IF_DV_3DI: // DV_3DI .........XLmmmmm ....H.nnnnnddddd Vd Vn Vm[] (scalar by elem)
839 case IF_DV_3E: // DV_3E ...........mmmmm ......nnnnnddddd Vd Vn Vm (scalar)
840 case IF_DV_4A: // DV_4A .........X.mmmmm .aaaaannnnnddddd Vd Va Vn Vm (scalar)
841 // Tracked GC pointers cannot be placed into the SIMD registers.
844 // These are the load/store formats with "target" registers:
846 case IF_LS_1A: // LS_1A XX...V..iiiiiiii iiiiiiiiiiittttt Rt PC imm(1MB)
847 case IF_LS_2A: // LS_2A .X.......X...... ......nnnnnttttt Rt Rn
848 case IF_LS_2B: // LS_2B .X.......Xiiiiii iiiiiinnnnnttttt Rt Rn imm(0-4095)
849 case IF_LS_2C: // LS_2C .X.......X.iiiii iiiiP.nnnnnttttt Rt Rn imm(-256..+255) pre/post inc
850 case IF_LS_3A: // LS_3A .X.......X.mmmmm xxxS..nnnnnttttt Rt Rn Rm ext(Rm) LSL {}
851 case IF_LS_3B: // LS_3B X............... .aaaaannnnnttttt Rt Ra Rn
852 case IF_LS_3C: // LS_3C X.........iiiiii iaaaaannnnnttttt Rt Ra Rn imm(im7,sh)
853 case IF_LS_3D: // LS_3D .X.......X.mmmmm ......nnnnnttttt Wm Rt Rn
855 // For the Store instructions the "target" register is actually a "source" value
857 if (emitInsIsStore(ins))
863 assert(emitInsIsLoad(ins));
872 bool emitter::emitInsWritesToLclVarStackLoc(instrDesc* id)
874 if (!id->idIsLclVar())
877 instruction ins = id->idIns();
879 // This list is related to the list of instructions used to store local vars in emitIns_S_R().
880 // We don't accept writing to float local vars.
896 bool emitter::emitInsWritesToLclVarStackLocPair(instrDesc* id)
898 if (!id->idIsLclVar())
901 instruction ins = id->idIns();
903 // This list is related to the list of instructions used to store local vars in emitIns_S_S_R_R().
904 // We don't accept writing to float local vars.
916 bool emitter::emitInsMayWriteMultipleRegs(instrDesc* id)
918 instruction ins = id->idIns();
931 // For the small loads/store instruction we adjust the size 'attr'
932 // depending upon whether we have a load or a store
934 emitAttr emitter::emitInsAdjustLoadStoreAttr(instruction ins, emitAttr attr)
936 if (EA_SIZE(attr) <= EA_4BYTE)
938 if (emitInsIsLoad(ins))
940 // The value of 'ins' encodes the size to load
941 // we use EA_8BYTE here because it is the size we will write (into dataReg)
942 // it is also required when ins is INS_ldrsw
948 assert(emitInsIsStore(ins));
950 // The value of 'ins' encodes the size to store
951 // we use EA_4BYTE here because it is the size of the register
952 // that we want to display when storing small values
960 // Takes an instrDesc 'id' and uses the instruction 'ins' to determine the
961 // size of the target register that is written or read by the instruction.
962 // Note that even if EA_4BYTE is returned a load instruction will still
963 // always zero the upper 4 bytes of the target register.
964 // This method is required so that we can distinguish between loads that are
965 // sign-extending as they can have two different sizes for their target register.
966 // Additionally for instructions like 'ldr' and 'str' these can load/store
967 // either 4 byte or 8 bytes to/from the target register.
968 // By convention the small unsigned load instructions are considered to write
969 // a 4 byte sized target register, though since these also zero the upper 4 bytes
970 // they could equally be considered to write the unsigned value to full 8 byte register.
972 emitAttr emitter::emitInsTargetRegSize(instrDesc* id)
974 instruction ins = id->idIns();
975 emitAttr result = EA_UNKNOWN;
977 // This is used to determine the size of the target registers for a load/store instruction
1011 if (id->idOpSize() == EA_8BYTE)
1027 result = id->idOpSize();
1040 result = id->idOpSize();
1044 NO_WAY("unexpected instruction");
1050 // Takes an instrDesc and uses the instruction to determine the 'size' of the
1051 // data that is loaded from memory.
1053 emitAttr emitter::emitInsLoadStoreSize(instrDesc* id)
1055 instruction ins = id->idIns();
1056 emitAttr result = EA_UNKNOWN;
1058 // The 'result' returned is the 'size' of the data that is loaded from memory.
1094 result = id->idOpSize();
1103 result = id->idOpSize();
1107 NO_WAY("unexpected instruction");
1113 /*****************************************************************************/
1117 static const char * const xRegNames[] =
1119 #define REGDEF(name, rnum, mask, xname, wname) xname,
1120 #include "register.h"
1123 static const char * const wRegNames[] =
1125 #define REGDEF(name, rnum, mask, xname, wname) wname,
1126 #include "register.h"
1129 static const char * const vRegNames[] =
1131 "v0", "v1", "v2", "v3", "v4",
1132 "v5", "v6", "v7", "v8", "v9",
1133 "v10", "v11", "v12", "v13", "v14",
1134 "v15", "v16", "v17", "v18", "v19",
1135 "v20", "v21", "v22", "v23", "v24",
1136 "v25", "v26", "v27", "v28", "v29",
1140 static const char * const qRegNames[] =
1142 "q0", "q1", "q2", "q3", "q4",
1143 "q5", "q6", "q7", "q8", "q9",
1144 "q10", "q11", "q12", "q13", "q14",
1145 "q15", "q16", "q17", "q18", "q19",
1146 "q20", "q21", "q22", "q23", "q24",
1147 "q25", "q26", "q27", "q28", "q29",
1151 static const char * const hRegNames[] =
1153 "h0", "h1", "h2", "h3", "h4",
1154 "h5", "h6", "h7", "h8", "h9",
1155 "h10", "h11", "h12", "h13", "h14",
1156 "h15", "h16", "h17", "h18", "h19",
1157 "h20", "h21", "h22", "h23", "h24",
1158 "h25", "h26", "h27", "h28", "h29",
1161 static const char * const bRegNames[] =
1163 "b0", "b1", "b2", "b3", "b4",
1164 "b5", "b6", "b7", "b8", "b9",
1165 "b10", "b11", "b12", "b13", "b14",
1166 "b15", "b16", "b17", "b18", "b19",
1167 "b20", "b21", "b22", "b23", "b24",
1168 "b25", "b26", "b27", "b28", "b29",
1173 /*****************************************************************************
1175 * Return a string that represents the given register.
1178 const char* emitter::emitRegName(regNumber reg, emitAttr size, bool varName)
1180 assert(reg < REG_COUNT);
1182 const char* rn = nullptr;
1184 if (size == EA_8BYTE)
1186 rn = xRegNames[reg];
1188 else if (size == EA_4BYTE)
1190 rn = wRegNames[reg];
1192 else if (isVectorRegister(reg))
1194 if (size == EA_16BYTE)
1196 rn = qRegNames[reg - REG_V0];
1198 else if (size == EA_2BYTE)
1200 rn = hRegNames[reg - REG_V0];
1202 else if (size == EA_1BYTE)
1204 rn = bRegNames[reg - REG_V0];
1208 assert(rn != nullptr);
1213 /*****************************************************************************
1215 * Return a string that represents the given register.
1218 const char* emitter::emitVectorRegName(regNumber reg)
1220 assert((reg >= REG_V0) && (reg <= REG_V31));
1222 int index = (int)reg - (int)REG_V0;
1224 return vRegNames[index];
1228 /*****************************************************************************
1230 * Returns the base encoding of the given CPU instruction.
1233 emitter::insFormat emitter::emitInsFormat(instruction ins)
1236 const static insFormat insFormats[] =
1238 #define INST1(id, nm, fp, ldst, fmt, e1 ) fmt,
1239 #define INST2(id, nm, fp, ldst, fmt, e1, e2 ) fmt,
1240 #define INST3(id, nm, fp, ldst, fmt, e1, e2, e3 ) fmt,
1241 #define INST4(id, nm, fp, ldst, fmt, e1, e2, e3, e4 ) fmt,
1242 #define INST5(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5 ) fmt,
1243 #define INST6(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6 ) fmt,
1244 #define INST9(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6, e7, e8, e9) fmt,
1249 assert(ins < ArrLen(insFormats));
1250 assert((insFormats[ins] != IF_NONE));
1252 return insFormats[ins];
1261 /*static*/ const BYTE CodeGenInterface::instInfo[] =
1263 #define INST1(id, nm, fp, ldst, fmt, e1 ) ldst | INST_FP*fp,
1264 #define INST2(id, nm, fp, ldst, fmt, e1, e2 ) ldst | INST_FP*fp,
1265 #define INST3(id, nm, fp, ldst, fmt, e1, e2, e3 ) ldst | INST_FP*fp,
1266 #define INST4(id, nm, fp, ldst, fmt, e1, e2, e3, e4 ) ldst | INST_FP*fp,
1267 #define INST5(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5 ) ldst | INST_FP*fp,
1268 #define INST6(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6 ) ldst | INST_FP*fp,
1269 #define INST9(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6, e7, e8, e9) ldst | INST_FP*fp,
1274 /*****************************************************************************
1276 * Returns true if the instruction is some kind of compare or test instruction
1279 bool emitter::emitInsIsCompare(instruction ins)
1281 // We have pseudo ins like lea which are not included in emitInsLdStTab.
1282 if (ins < ArrLen(CodeGenInterface::instInfo))
1283 return (CodeGenInterface::instInfo[ins] & CMP) ? true : false;
1288 /*****************************************************************************
1290 * Returns true if the instruction is some kind of load instruction
1293 bool emitter::emitInsIsLoad(instruction ins)
1295 // We have pseudo ins like lea which are not included in emitInsLdStTab.
1296 if (ins < ArrLen(CodeGenInterface::instInfo))
1297 return (CodeGenInterface::instInfo[ins] & LD) ? true : false;
1301 /*****************************************************************************
1303 * Returns true if the instruction is some kind of store instruction
1306 bool emitter::emitInsIsStore(instruction ins)
1308 // We have pseudo ins like lea which are not included in emitInsLdStTab.
1309 if (ins < ArrLen(CodeGenInterface::instInfo))
1310 return (CodeGenInterface::instInfo[ins] & ST) ? true : false;
1315 /*****************************************************************************
1317 * Returns true if the instruction is some kind of load/store instruction
1320 bool emitter::emitInsIsLoadOrStore(instruction ins)
1322 // We have pseudo ins like lea which are not included in emitInsLdStTab.
1323 if (ins < ArrLen(CodeGenInterface::instInfo))
1324 return (CodeGenInterface::instInfo[ins] & (LD | ST)) ? true : false;
1333 /*****************************************************************************
1335 * Returns the specific encoding of the given CPU instruction and format
1338 emitter::code_t emitter::emitInsCode(instruction ins, insFormat fmt)
1341 const static code_t insCodes1[] =
1343 #define INST1(id, nm, fp, ldst, fmt, e1 ) e1,
1344 #define INST2(id, nm, fp, ldst, fmt, e1, e2 ) e1,
1345 #define INST3(id, nm, fp, ldst, fmt, e1, e2, e3 ) e1,
1346 #define INST4(id, nm, fp, ldst, fmt, e1, e2, e3, e4 ) e1,
1347 #define INST5(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5 ) e1,
1348 #define INST6(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6 ) e1,
1349 #define INST9(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6, e7, e8, e9) e1,
1352 const static code_t insCodes2[] =
1354 #define INST1(id, nm, fp, ldst, fmt, e1 )
1355 #define INST2(id, nm, fp, ldst, fmt, e1, e2 ) e2,
1356 #define INST3(id, nm, fp, ldst, fmt, e1, e2, e3 ) e2,
1357 #define INST4(id, nm, fp, ldst, fmt, e1, e2, e3, e4 ) e2,
1358 #define INST5(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5 ) e2,
1359 #define INST6(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6 ) e2,
1360 #define INST9(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6, e7, e8, e9) e2,
1363 const static code_t insCodes3[] =
1365 #define INST1(id, nm, fp, ldst, fmt, e1 )
1366 #define INST2(id, nm, fp, ldst, fmt, e1, e2 )
1367 #define INST3(id, nm, fp, ldst, fmt, e1, e2, e3 ) e3,
1368 #define INST4(id, nm, fp, ldst, fmt, e1, e2, e3, e4 ) e3,
1369 #define INST5(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5 ) e3,
1370 #define INST6(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6 ) e3,
1371 #define INST9(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6, e7, e8, e9) e3,
1374 const static code_t insCodes4[] =
1376 #define INST1(id, nm, fp, ldst, fmt, e1 )
1377 #define INST2(id, nm, fp, ldst, fmt, e1, e2 )
1378 #define INST3(id, nm, fp, ldst, fmt, e1, e2, e3 )
1379 #define INST4(id, nm, fp, ldst, fmt, e1, e2, e3, e4 ) e4,
1380 #define INST5(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5 ) e4,
1381 #define INST6(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6 ) e4,
1382 #define INST9(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6, e7, e8, e9) e4,
1385 const static code_t insCodes5[] =
1387 #define INST1(id, nm, fp, ldst, fmt, e1 )
1388 #define INST2(id, nm, fp, ldst, fmt, e1, e2 )
1389 #define INST3(id, nm, fp, ldst, fmt, e1, e2, e3 )
1390 #define INST4(id, nm, fp, ldst, fmt, e1, e2, e3, e4 )
1391 #define INST5(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5 ) e5,
1392 #define INST6(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6 ) e5,
1393 #define INST9(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6, e7, e8, e9) e5,
1396 const static code_t insCodes6[] =
1398 #define INST1(id, nm, fp, ldst, fmt, e1 )
1399 #define INST2(id, nm, fp, ldst, fmt, e1, e2 )
1400 #define INST3(id, nm, fp, ldst, fmt, e1, e2, e3 )
1401 #define INST4(id, nm, fp, ldst, fmt, e1, e2, e3, e4 )
1402 #define INST5(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5 )
1403 #define INST6(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6 ) e6,
1404 #define INST9(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6, e7, e8, e9) e6,
1407 const static code_t insCodes7[] =
1409 #define INST1(id, nm, fp, ldst, fmt, e1 )
1410 #define INST2(id, nm, fp, ldst, fmt, e1, e2 )
1411 #define INST3(id, nm, fp, ldst, fmt, e1, e2, e3 )
1412 #define INST4(id, nm, fp, ldst, fmt, e1, e2, e3, e4 )
1413 #define INST5(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5 )
1414 #define INST6(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6 )
1415 #define INST9(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6, e7, e8, e9) e7,
1418 const static code_t insCodes8[] =
1420 #define INST1(id, nm, fp, ldst, fmt, e1 )
1421 #define INST2(id, nm, fp, ldst, fmt, e1, e2 )
1422 #define INST3(id, nm, fp, ldst, fmt, e1, e2, e3 )
1423 #define INST4(id, nm, fp, ldst, fmt, e1, e2, e3, e4 )
1424 #define INST5(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5 )
1425 #define INST6(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6 )
1426 #define INST9(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6, e7, e8, e9) e8,
1429 const static code_t insCodes9[] =
1431 #define INST1(id, nm, fp, ldst, fmt, e1 )
1432 #define INST2(id, nm, fp, ldst, fmt, e1, e2 )
1433 #define INST3(id, nm, fp, ldst, fmt, e1, e2, e3 )
1434 #define INST4(id, nm, fp, ldst, fmt, e1, e2, e3, e4 )
1435 #define INST5(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5 )
1436 #define INST6(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6 )
1437 #define INST9(id, nm, fp, ldst, fmt, e1, e2, e3, e4, e5, e6, e7, e8, e9) e9,
1442 const static insFormat formatEncode9[9] = {IF_DR_2E, IF_DR_2G, IF_DI_1B, IF_DI_1D, IF_DV_3C,
1443 IF_DV_2B, IF_DV_2C, IF_DV_2E, IF_DV_2F};
1444 const static insFormat formatEncode6A[6] = {IF_DR_3A, IF_DR_3B, IF_DR_3C, IF_DI_2A, IF_DV_3A, IF_DV_3E};
1445 const static insFormat formatEncode5A[5] = {IF_LS_2A, IF_LS_2B, IF_LS_2C, IF_LS_3A, IF_LS_1A};
1446 const static insFormat formatEncode5B[5] = {IF_DV_2G, IF_DV_2H, IF_DV_2I, IF_DV_1A, IF_DV_1B};
1447 const static insFormat formatEncode5C[5] = {IF_DR_3A, IF_DR_3B, IF_DI_2C, IF_DV_3C, IF_DV_1B};
1448 const static insFormat formatEncode4A[4] = {IF_LS_2A, IF_LS_2B, IF_LS_2C, IF_LS_3A};
1449 const static insFormat formatEncode4B[4] = {IF_DR_3A, IF_DR_3B, IF_DR_3C, IF_DI_2A};
1450 const static insFormat formatEncode4C[4] = {IF_DR_2A, IF_DR_2B, IF_DR_2C, IF_DI_1A};
1451 const static insFormat formatEncode4D[4] = {IF_DV_3B, IF_DV_3D, IF_DV_3BI, IF_DV_3DI};
1452 const static insFormat formatEncode4E[4] = {IF_DR_3A, IF_DR_3B, IF_DI_2C, IF_DV_3C};
1453 const static insFormat formatEncode4F[4] = {IF_DR_3A, IF_DR_3B, IF_DV_3C, IF_DV_1B};
1454 const static insFormat formatEncode4G[4] = {IF_DR_2E, IF_DR_2F, IF_DV_2M, IF_DV_2L};
1455 const static insFormat formatEncode4H[4] = {IF_DV_3E, IF_DV_3A, IF_DV_2L, IF_DV_2M};
1456 const static insFormat formatEncode4I[4] = {IF_DV_3D, IF_DV_3B, IF_DV_2G, IF_DV_2A};
1457 const static insFormat formatEncode3A[3] = {IF_DR_3A, IF_DR_3B, IF_DI_2C};
1458 const static insFormat formatEncode3B[3] = {IF_DR_2A, IF_DR_2B, IF_DI_1C};
1459 const static insFormat formatEncode3C[3] = {IF_DR_3A, IF_DR_3B, IF_DV_3C};
1460 const static insFormat formatEncode3D[3] = {IF_DV_2C, IF_DV_2D, IF_DV_2E};
1461 const static insFormat formatEncode3E[3] = {IF_DV_3B, IF_DV_3BI, IF_DV_3DI};
1462 const static insFormat formatEncode3F[3] = {IF_DV_2A, IF_DV_2G, IF_DV_2H};
1463 const static insFormat formatEncode3G[3] = {IF_DV_2A, IF_DV_2G, IF_DV_2I};
1464 const static insFormat formatEncode3H[3] = {IF_DR_3A, IF_DV_3A, IF_DV_3AI};
1465 const static insFormat formatEncode3I[3] = {IF_DR_2E, IF_DR_2F, IF_DV_2M};
1466 const static insFormat formatEncode2A[2] = {IF_DR_2E, IF_DR_2F};
1467 const static insFormat formatEncode2B[2] = {IF_DR_3A, IF_DR_3B};
1468 const static insFormat formatEncode2C[2] = {IF_DR_3A, IF_DI_2D};
1469 const static insFormat formatEncode2D[2] = {IF_DR_3A, IF_DI_2B};
1470 const static insFormat formatEncode2E[2] = {IF_LS_3B, IF_LS_3C};
1471 const static insFormat formatEncode2F[2] = {IF_DR_2I, IF_DI_1F};
1472 const static insFormat formatEncode2G[2] = {IF_DV_3B, IF_DV_3D};
1473 const static insFormat formatEncode2H[2] = {IF_DV_2C, IF_DV_2F};
1474 const static insFormat formatEncode2I[2] = {IF_DV_2K, IF_DV_1C};
1475 const static insFormat formatEncode2J[2] = {IF_DV_2A, IF_DV_2G};
1476 const static insFormat formatEncode2K[2] = {IF_DV_2M, IF_DV_2L};
1477 const static insFormat formatEncode2L[2] = {IF_DV_2G, IF_DV_2M};
1478 const static insFormat formatEncode2M[2] = {IF_DV_3A, IF_DV_3AI};
1479 const static insFormat formatEncode2N[2] = {IF_DV_2N, IF_DV_2O};
1480 const static insFormat formatEncode2O[2] = {IF_DV_3E, IF_DV_3A};
1481 const static insFormat formatEncode2P[2] = {IF_DV_2G, IF_DV_3B};
1483 code_t code = BAD_CODE;
1484 insFormat insFmt = emitInsFormat(ins);
1485 bool encoding_found = false;
1491 for (index = 0; index < 9; index++)
1493 if (fmt == formatEncode9[index])
1495 encoding_found = true;
1502 for (index = 0; index < 6; index++)
1504 if (fmt == formatEncode6A[index])
1506 encoding_found = true;
1513 for (index = 0; index < 5; index++)
1515 if (fmt == formatEncode5A[index])
1517 encoding_found = true;
1524 for (index = 0; index < 5; index++)
1526 if (fmt == formatEncode5B[index])
1528 encoding_found = true;
1535 for (index = 0; index < 5; index++)
1537 if (fmt == formatEncode5C[index])
1539 encoding_found = true;
1546 for (index = 0; index < 4; index++)
1548 if (fmt == formatEncode4A[index])
1550 encoding_found = true;
1557 for (index = 0; index < 4; index++)
1559 if (fmt == formatEncode4B[index])
1561 encoding_found = true;
1568 for (index = 0; index < 4; index++)
1570 if (fmt == formatEncode4C[index])
1572 encoding_found = true;
1579 for (index = 0; index < 4; index++)
1581 if (fmt == formatEncode4D[index])
1583 encoding_found = true;
1590 for (index = 0; index < 4; index++)
1592 if (fmt == formatEncode4E[index])
1594 encoding_found = true;
1601 for (index = 0; index < 4; index++)
1603 if (fmt == formatEncode4F[index])
1605 encoding_found = true;
1612 for (index = 0; index < 4; index++)
1614 if (fmt == formatEncode4G[index])
1616 encoding_found = true;
1623 for (index = 0; index < 4; index++)
1625 if (fmt == formatEncode4H[index])
1627 encoding_found = true;
1634 for (index = 0; index < 4; index++)
1636 if (fmt == formatEncode4I[index])
1638 encoding_found = true;
1645 for (index = 0; index < 3; index++)
1647 if (fmt == formatEncode3A[index])
1649 encoding_found = true;
1656 for (index = 0; index < 3; index++)
1658 if (fmt == formatEncode3B[index])
1660 encoding_found = true;
1667 for (index = 0; index < 3; index++)
1669 if (fmt == formatEncode3C[index])
1671 encoding_found = true;
1678 for (index = 0; index < 3; index++)
1680 if (fmt == formatEncode3D[index])
1682 encoding_found = true;
1689 for (index = 0; index < 3; index++)
1691 if (fmt == formatEncode3E[index])
1693 encoding_found = true;
1700 for (index = 0; index < 3; index++)
1702 if (fmt == formatEncode3F[index])
1704 encoding_found = true;
1711 for (index = 0; index < 3; index++)
1713 if (fmt == formatEncode3G[index])
1715 encoding_found = true;
1722 for (index = 0; index < 3; index++)
1724 if (fmt == formatEncode3H[index])
1726 encoding_found = true;
1733 for (index = 0; index < 3; index++)
1735 if (fmt == formatEncode3I[index])
1737 encoding_found = true;
1744 for (index = 0; index < 2; index++)
1746 if (fmt == formatEncode2A[index])
1748 encoding_found = true;
1755 for (index = 0; index < 2; index++)
1757 if (fmt == formatEncode2B[index])
1759 encoding_found = true;
1766 for (index = 0; index < 2; index++)
1768 if (fmt == formatEncode2C[index])
1770 encoding_found = true;
1777 for (index = 0; index < 2; index++)
1779 if (fmt == formatEncode2D[index])
1781 encoding_found = true;
1788 for (index = 0; index < 2; index++)
1790 if (fmt == formatEncode2E[index])
1792 encoding_found = true;
1799 for (index = 0; index < 2; index++)
1801 if (fmt == formatEncode2F[index])
1803 encoding_found = true;
1810 for (index = 0; index < 2; index++)
1812 if (fmt == formatEncode2G[index])
1814 encoding_found = true;
1821 for (index = 0; index < 2; index++)
1823 if (fmt == formatEncode2H[index])
1825 encoding_found = true;
1832 for (index = 0; index < 2; index++)
1834 if (fmt == formatEncode2I[index])
1836 encoding_found = true;
1843 for (index = 0; index < 2; index++)
1845 if (fmt == formatEncode2J[index])
1847 encoding_found = true;
1854 for (index = 0; index < 2; index++)
1856 if (fmt == formatEncode2K[index])
1858 encoding_found = true;
1865 for (index = 0; index < 2; index++)
1867 if (fmt == formatEncode2L[index])
1869 encoding_found = true;
1876 for (index = 0; index < 2; index++)
1878 if (fmt == formatEncode2M[index])
1880 encoding_found = true;
1887 for (index = 0; index < 2; index++)
1889 if (fmt == formatEncode2N[index])
1891 encoding_found = true;
1898 for (index = 0; index < 2; index++)
1900 if (fmt == formatEncode2O[index])
1902 encoding_found = true;
1909 for (index = 0; index < 2; index++)
1911 if (fmt == formatEncode2P[index])
1913 encoding_found = true;
1992 encoding_found = true;
1997 encoding_found = false;
2001 assert(encoding_found);
2006 assert(ins < ArrLen(insCodes1));
2007 code = insCodes1[ins];
2010 assert(ins < ArrLen(insCodes2));
2011 code = insCodes2[ins];
2014 assert(ins < ArrLen(insCodes3));
2015 code = insCodes3[ins];
2018 assert(ins < ArrLen(insCodes4));
2019 code = insCodes4[ins];
2022 assert(ins < ArrLen(insCodes5));
2023 code = insCodes5[ins];
2026 assert(ins < ArrLen(insCodes6));
2027 code = insCodes6[ins];
2030 assert(ins < ArrLen(insCodes7));
2031 code = insCodes7[ins];
2034 assert(ins < ArrLen(insCodes8));
2035 code = insCodes8[ins];
2038 assert(ins < ArrLen(insCodes9));
2039 code = insCodes9[ins];
2043 assert((code != BAD_CODE));
2048 // true if this 'imm' can be encoded as a input operand to a mov instruction
2049 /*static*/ bool emitter::emitIns_valid_imm_for_mov(INT64 imm, emitAttr size)
2051 // Check for "MOV (wide immediate)".
2052 if (canEncodeHalfwordImm(imm, size))
2055 // Next try the ones-complement form of 'halfword immediate' imm(i16,hw),
2056 // namely "MOV (inverted wide immediate)".
2057 ssize_t notOfImm = NOT_helper(imm, getBitWidth(size));
2058 if (canEncodeHalfwordImm(notOfImm, size))
2061 // Finally try "MOV (bitmask immediate)" imm(N,r,s)
2062 if (canEncodeBitMaskImm(imm, size))
2068 // true if this 'imm' can be encoded as a input operand to a vector movi instruction
2069 /*static*/ bool emitter::emitIns_valid_imm_for_movi(INT64 imm, emitAttr elemsize)
2071 if (elemsize == EA_8BYTE)
2076 INT64 loByte = uimm & 0xFF;
2077 if ((loByte == 0) || (loByte == 0xFF))
2091 // First try the standard 'byteShifted immediate' imm(i8,bySh)
2092 if (canEncodeByteShiftedImm(imm, elemsize, true))
2095 // Next try the ones-complement form of the 'immediate' imm(i8,bySh)
2096 ssize_t notOfImm = NOT_helper(imm, getBitWidth(elemsize));
2097 if (canEncodeByteShiftedImm(notOfImm, elemsize, true))
2103 // true if this 'imm' can be encoded as a input operand to a fmov instruction
2104 /*static*/ bool emitter::emitIns_valid_imm_for_fmov(double immDbl)
2106 if (canEncodeFloatImm8(immDbl))
2112 // true if this 'imm' can be encoded as a input operand to an add instruction
2113 /*static*/ bool emitter::emitIns_valid_imm_for_add(INT64 imm, emitAttr size)
2115 if (unsigned_abs(imm) <= 0x0fff)
2117 else if (canEncodeWithShiftImmBy12(imm)) // Try the shifted by 12 encoding
2123 // true if this 'imm' can be encoded as a input operand to an non-add/sub alu instruction
2124 /*static*/ bool emitter::emitIns_valid_imm_for_cmp(INT64 imm, emitAttr size)
2126 return emitIns_valid_imm_for_add(imm, size);
2129 // true if this 'imm' can be encoded as a input operand to an non-add/sub alu instruction
2130 /*static*/ bool emitter::emitIns_valid_imm_for_alu(INT64 imm, emitAttr size)
2132 if (canEncodeBitMaskImm(imm, size))
2138 // true if this 'imm' can be encoded as the offset in a ldr/str instruction
2139 /*static*/ bool emitter::emitIns_valid_imm_for_ldst_offset(INT64 imm, emitAttr attr)
2142 return true; // Encodable using IF_LS_2A
2144 if ((imm >= -256) && (imm <= 255))
2145 return true; // Encodable using IF_LS_2C (or possibly IF_LS_2B)
2148 return false; // not encodable
2150 emitAttr size = EA_SIZE(attr);
2151 unsigned scale = NaturalScale_helper(size);
2152 ssize_t mask = size - 1; // the mask of low bits that must be zero to encode the immediate
2154 if (((imm & mask) == 0) && ((imm >> scale) < 0x1000))
2155 return true; // Encodable using IF_LS_2B
2157 return false; // not encodable
2160 /************************************************************************
2162 * A helper method to return the natural scale for an EA 'size'
2165 /*static*/ unsigned emitter::NaturalScale_helper(emitAttr size)
2167 assert(size == EA_1BYTE || size == EA_2BYTE || size == EA_4BYTE || size == EA_8BYTE || size == EA_16BYTE);
2169 unsigned result = 0;
2170 unsigned utemp = (unsigned)size;
2172 // Compute log base 2 of utemp (aka 'size')
2182 /************************************************************************
2184 * A helper method to perform a Rotate-Right shift operation
2185 * the source is 'value' and it is rotated right by 'sh' bits
2186 * 'value' is considered to be a fixed size 'width' set of bits.
2189 * value is '00001111', sh is 2 and width is 8
2190 * result is '11000011'
2193 /*static*/ UINT64 emitter::ROR_helper(UINT64 value, unsigned sh, unsigned width)
2195 assert(width <= 64);
2196 // Check that 'value' fits in 'width' bits
2197 assert((width == 64) || (value < (1ULL << width)));
2198 // We don't support shifts >= width
2204 unsigned lsh = width - rsh;
2206 result = (value >> rsh);
2207 result |= (value << lsh);
2211 // mask off any extra bits that we got from the left shift
2212 result &= ((1ULL << width) - 1);
2216 /************************************************************************
2218 * A helper method to perform a 'NOT' bitwise complement operation.
2219 * 'value' is considered to be a fixed size 'width' set of bits.
2222 * value is '01001011', and width is 8
2223 * result is '10110100'
2226 /*static*/ UINT64 emitter::NOT_helper(UINT64 value, unsigned width)
2228 assert(width <= 64);
2230 UINT64 result = ~value;
2234 // Check that 'value' fits in 'width' bits. Don't consider "sign" bits above width.
2235 UINT64 maxVal = 1ULL << width;
2236 UINT64 lowBitsMask = maxVal - 1;
2237 UINT64 signBitsMask = ~lowBitsMask | (1ULL << (width - 1)); // The high bits must be set, and the top bit
2238 // (sign bit) must be set.
2239 assert((value < maxVal) || ((value & signBitsMask) == signBitsMask));
2241 // mask off any extra bits that we got from the complement operation
2242 result &= lowBitsMask;
2248 /************************************************************************
2250 * A helper method to perform a bit Replicate operation
2251 * the source is 'value' with a fixed size 'width' set of bits.
2252 * value is replicated to fill out 32 or 64 bits as determined by 'size'.
2255 * value is '11000011' (0xE3), width is 8 and size is EA_8BYTE
2256 * result is '11000011 11000011 11000011 11000011 11000011 11000011 11000011 11000011'
2257 * 0xE3E3E3E3E3E3E3E3
2260 /*static*/ UINT64 emitter::Replicate_helper(UINT64 value, unsigned width, emitAttr size)
2262 assert(emitter::isValidGeneralDatasize(size));
2264 unsigned immWidth = (size == EA_8BYTE) ? 64 : 32;
2265 assert(width <= immWidth);
2267 UINT64 result = value;
2268 unsigned filledBits = width;
2270 while (filledBits < immWidth)
2274 filledBits += width;
2279 /************************************************************************
2281 * Convert an imm(N,r,s) into a 64-bit immediate
2282 * inputs 'bmImm' a bitMaskImm struct
2283 * 'size' specifies the size of the result (64 or 32 bits)
2286 /*static*/ INT64 emitter::emitDecodeBitMaskImm(const emitter::bitMaskImm bmImm, emitAttr size)
2288 assert(isValidGeneralDatasize(size)); // Only EA_4BYTE or EA_8BYTE forms
2290 unsigned N = bmImm.immN; // read the N,R and S values from the 'bitMaskImm' encoding
2291 unsigned R = bmImm.immR;
2292 unsigned S = bmImm.immS;
2294 unsigned elemWidth = 64; // used when immN == 1
2296 if (bmImm.immN == 0) // find the smaller elemWidth when immN == 0
2298 // Scan S for the highest bit not set
2300 for (unsigned bitNum = 5; bitNum > 0; bitNum--)
2302 unsigned oneBit = elemWidth;
2303 if ((S & oneBit) == 0)
2310 assert(size == EA_8BYTE);
2313 unsigned maskSR = elemWidth - 1;
2318 // encoding for S is one less than the number of consecutive one bits
2319 S++; // Number of consecutive ones to generate in 'welem'
2323 // 'elemWidth' is the number of bits that we will use for the ROR and Replicate operations
2324 // 'S' is the number of consecutive 1 bits for the immediate
2325 // 'R' is the number of bits that we will Rotate Right the immediate
2326 // 'size' selects the final size of the immedate that we return (64 or 32 bits)
2328 assert(S < elemWidth); // 'elemWidth' consecutive one's is a reserved encoding
2333 welem = (1ULL << S) - 1;
2335 wmask = ROR_helper(welem, R, elemWidth);
2336 wmask = Replicate_helper(wmask, elemWidth, size);
2341 /*****************************************************************************
2343 * Check if an immediate can use the left shifted by 12 bits encoding
2346 /*static*/ bool emitter::canEncodeWithShiftImmBy12(INT64 imm)
2350 imm = -imm; // convert to unsigned
2355 return false; // Must be MIN_INT64
2358 if ((imm & 0xfff) != 0) // Now the low 12 bits all have to be zero
2363 imm >>= 12; // shift right by 12 bits
2365 return (imm <= 0x0fff); // Does it fit in 12 bits
2368 /*****************************************************************************
2370 * Normalize the 'imm' so that the upper bits, as defined by 'size' are zero
2373 /*static*/ INT64 emitter::normalizeImm64(INT64 imm, emitAttr size)
2375 unsigned immWidth = getBitWidth(size);
2380 // Check that 'imm' fits in 'immWidth' bits. Don't consider "sign" bits above width.
2381 INT64 maxVal = 1LL << immWidth;
2382 INT64 lowBitsMask = maxVal - 1;
2383 INT64 hiBitsMask = ~lowBitsMask;
2384 INT64 signBitsMask =
2385 hiBitsMask | (1LL << (immWidth - 1)); // The high bits must be set, and the top bit (sign bit) must be set.
2386 assert((imm < maxVal) || ((imm & signBitsMask) == signBitsMask));
2388 // mask off the hiBits
2389 result &= lowBitsMask;
2394 /*****************************************************************************
2396 * Normalize the 'imm' so that the upper bits, as defined by 'size' are zero
2399 /*static*/ INT32 emitter::normalizeImm32(INT32 imm, emitAttr size)
2401 unsigned immWidth = getBitWidth(size);
2406 // Check that 'imm' fits in 'immWidth' bits. Don't consider "sign" bits above width.
2407 INT32 maxVal = 1 << immWidth;
2408 INT32 lowBitsMask = maxVal - 1;
2409 INT32 hiBitsMask = ~lowBitsMask;
2410 INT32 signBitsMask = hiBitsMask | (1 << (immWidth - 1)); // The high bits must be set, and the top bit
2411 // (sign bit) must be set.
2412 assert((imm < maxVal) || ((imm & signBitsMask) == signBitsMask));
2414 // mask off the hiBits
2415 result &= lowBitsMask;
2420 /************************************************************************
2422 * returns true if 'imm' of 'size bits (32/64) can be encoded
2423 * using the ARM64 'bitmask immediate' form.
2424 * When a non-null value is passed for 'wbBMI' then this method
2425 * writes back the 'N','S' and 'R' values use to encode this immediate
2429 /*static*/ bool emitter::canEncodeBitMaskImm(INT64 imm, emitAttr size, emitter::bitMaskImm* wbBMI)
2431 assert(isValidGeneralDatasize(size)); // Only EA_4BYTE or EA_8BYTE forms
2433 unsigned immWidth = (size == EA_8BYTE) ? 64 : 32;
2434 unsigned maxLen = (size == EA_8BYTE) ? 6 : 5;
2436 imm = normalizeImm64(imm, size);
2438 // Starting with len=1, elemWidth is 2 bits
2439 // len=2, elemWidth is 4 bits
2440 // len=3, elemWidth is 8 bits
2441 // len=4, elemWidth is 16 bits
2442 // len=5, elemWidth is 32 bits
2443 // (optionally) len=6, elemWidth is 64 bits
2445 for (unsigned len = 1; (len <= maxLen); len++)
2447 unsigned elemWidth = 1 << len;
2448 UINT64 elemMask = ((UINT64)-1) >> (64 - elemWidth);
2449 UINT64 tempImm = (UINT64)imm; // A working copy of 'imm' that we can mutate
2450 UINT64 elemVal = tempImm & elemMask; // The low 'elemWidth' bits of 'imm'
2452 // Check for all 1's or 0's as these can't be encoded
2453 if ((elemVal == 0) || (elemVal == elemMask))
2456 // 'checkedBits' is the count of bits that are known to match 'elemVal' when replicated
2457 unsigned checkedBits = elemWidth; // by definition the first 'elemWidth' bits match
2459 // Now check to see if each of the next bits match...
2461 while (checkedBits < immWidth)
2463 tempImm >>= elemWidth;
2465 UINT64 nextElem = tempImm & elemMask;
2466 if (nextElem != elemVal)
2468 // Not matching, exit this loop and checkedBits will not be equal to immWidth
2472 // The 'nextElem' is matching, so increment 'checkedBits'
2473 checkedBits += elemWidth;
2476 // Did the full immediate contain bits that can be formed by repeating 'elemVal'?
2477 if (checkedBits == immWidth)
2479 // We are not quite done, since the only values that we can encode as a
2480 // 'bitmask immediate' are those that can be formed by starting with a
2481 // bit string of 0*1* that is rotated by some number of bits.
2483 // We check to see if 'elemVal' can be formed using these restrictions.
2486 // Rotating by one bit any value that passes these restrictions
2487 // can be xor-ed with the original value and will result it a string
2488 // of bits that have exactly two 1 bits: 'elemRorXor'
2489 // Further the distance between the two one bits tells us the value
2490 // of S and the location of the 1 bits tells us the value of R
2492 // Some examples: (immWidth is 8)
2494 // S=4,R=0 S=5,R=3 S=3,R=6
2495 // elemVal: 00001111 11100011 00011100
2496 // elemRor: 10000111 11110001 00001110
2497 // elemRorXor: 10001000 00010010 00010010
2498 // compute S 45678--- ---5678- ---3210-
2499 // compute R 01234567 ---34567 ------67
2501 UINT64 elemRor = ROR_helper(elemVal, 1, elemWidth); // Rotate 'elemVal' Right by one bit
2502 UINT64 elemRorXor = elemVal ^ elemRor; // Xor elemVal and elemRor
2504 // If we only have a two-bit change in elemROR then we can form a mask for this value
2505 unsigned bitCount = 0;
2506 UINT64 oneBit = 0x1;
2507 unsigned R = elemWidth; // R is shift count for ROR (rotate right shift)
2508 unsigned S = 0; // S is number of consecutive one bits
2511 // Loop over the 'elemWidth' bits in 'elemRorXor'
2513 for (unsigned bitNum = 0; bitNum < elemWidth; bitNum++)
2517 R--; // We decrement R by one whenever incr is -1
2521 S += incr; // We incr/decr S, after we find the first one bit in 'elemRorXor'
2524 // Is this bit position a 1 bit in 'elemRorXor'?
2526 if (oneBit & elemRorXor)
2529 // Is this the first 1 bit that we found in 'elemRorXor'?
2532 // Does this 1 bit represent a transition to zero bits?
2533 bool toZeros = ((oneBit & elemVal) != 0);
2536 // S :: Count down from elemWidth
2540 else // this 1 bit represent a transition to one bits.
2542 // S :: Count up from zero
2547 else // bitCount > 1
2549 // We found the second (or third...) 1 bit in 'elemRorXor'
2550 incr = 0; // stop decrementing 'R'
2554 // More than 2 transitions from 0/1 in 'elemVal'
2555 // This means that 'elemVal' can't be encoded
2556 // using a 'bitmask immediate'.
2558 // Furthermore, it will continue to fail
2559 // with any larger 'len' that we try.
2560 // so just return false.
2567 // shift oneBit left by one bit to test the next position
2571 // We expect that bitCount will always be two at this point
2572 // but just in case return false for any bad cases.
2574 assert(bitCount == 2);
2578 // Perform some sanity checks on the values of 'S' and 'R'
2580 assert(S < elemWidth);
2581 assert(R < elemWidth);
2583 // Does the caller want us to return the N,R,S encoding values?
2585 if (wbBMI != nullptr)
2588 // The encoding used for S is one less than the
2589 // number of consecutive one bits
2599 // The encoding used for 'S' here is a bit peculiar.
2601 // The upper bits need to be complemented, followed by a zero bit
2602 // then the value of 'S-1'
2604 unsigned upperBitsOfS = 64 - (1 << (len + 1));
2610 // Verify that what we are returning is correct.
2611 assert(imm == emitDecodeBitMaskImm(*wbBMI, size));
2613 // Tell the caller that we can successfully encode this immediate
2614 // using a 'bitmask immediate'.
2622 /************************************************************************
2624 * Convert a 64-bit immediate into its 'bitmask immediate' representation imm(N,r,s)
2627 /*static*/ emitter::bitMaskImm emitter::emitEncodeBitMaskImm(INT64 imm, emitAttr size)
2629 emitter::bitMaskImm result;
2632 bool canEncode = canEncodeBitMaskImm(imm, size, &result);
2638 /************************************************************************
2640 * Convert an imm(i16,hw) into a 32/64-bit immediate
2641 * inputs 'hwImm' a halfwordImm struct
2642 * 'size' specifies the size of the result (64 or 32 bits)
2645 /*static*/ INT64 emitter::emitDecodeHalfwordImm(const emitter::halfwordImm hwImm, emitAttr size)
2647 assert(isValidGeneralDatasize(size)); // Only EA_4BYTE or EA_8BYTE forms
2649 unsigned hw = hwImm.immHW;
2650 INT64 val = (INT64)hwImm.immVal;
2652 assert((hw <= 1) || (size == EA_8BYTE));
2654 INT64 result = val << (16 * hw);
2658 /************************************************************************
2660 * returns true if 'imm' of 'size' bits (32/64) can be encoded
2661 * using the ARM64 'halfword immediate' form.
2662 * When a non-null value is passed for 'wbHWI' then this method
2663 * writes back the 'immHW' and 'immVal' values use to encode this immediate
2667 /*static*/ bool emitter::canEncodeHalfwordImm(INT64 imm, emitAttr size, emitter::halfwordImm* wbHWI)
2669 assert(isValidGeneralDatasize(size)); // Only EA_4BYTE or EA_8BYTE forms
2671 unsigned immWidth = (size == EA_8BYTE) ? 64 : 32;
2672 unsigned maxHW = (size == EA_8BYTE) ? 4 : 2;
2674 // setup immMask to a (EA_4BYTE) 0x00000000_FFFFFFFF or (EA_8BYTE) 0xFFFFFFFF_FFFFFFFF
2675 const UINT64 immMask = ((UINT64)-1) >> (64 - immWidth);
2676 const INT64 mask16 = (INT64)0xFFFF;
2678 imm = normalizeImm64(imm, size);
2680 // Try each of the valid hw shift sizes
2681 for (unsigned hw = 0; (hw < maxHW); hw++)
2683 INT64 curMask = mask16 << (hw * 16); // Represents the mask of the bits in the current halfword
2684 INT64 checkBits = immMask & ~curMask;
2686 // Excluding the current halfword (using ~curMask)
2687 // does the immediate have zero bits in every other bit that we care about?
2688 // note we care about all 64-bits for EA_8BYTE
2689 // and we care about the lowest 32 bits for EA_4BYTE
2691 if ((imm & checkBits) == 0)
2693 // Does the caller want us to return the imm(i16,hw) encoding values?
2695 if (wbHWI != nullptr)
2697 INT64 val = ((imm & curMask) >> (hw * 16)) & mask16;
2699 wbHWI->immVal = val;
2701 // Verify that what we are returning is correct.
2702 assert(imm == emitDecodeHalfwordImm(*wbHWI, size));
2704 // Tell the caller that we can successfully encode this immediate
2705 // using a 'halfword immediate'.
2713 /************************************************************************
2715 * Convert a 64-bit immediate into its 'halfword immediate' representation imm(i16,hw)
2718 /*static*/ emitter::halfwordImm emitter::emitEncodeHalfwordImm(INT64 imm, emitAttr size)
2720 emitter::halfwordImm result;
2721 result.immHWVal = 0;
2723 bool canEncode = canEncodeHalfwordImm(imm, size, &result);
2729 /************************************************************************
2731 * Convert an imm(i8,sh) into a 16/32-bit immediate
2732 * inputs 'bsImm' a byteShiftedImm struct
2733 * 'size' specifies the size of the result (16 or 32 bits)
2736 /*static*/ INT32 emitter::emitDecodeByteShiftedImm(const emitter::byteShiftedImm bsImm, emitAttr size)
2738 bool onesShift = (bsImm.immOnes == 1);
2739 unsigned bySh = bsImm.immBY; // Num Bytes to shift 0,1,2,3
2740 INT32 val = (INT32)bsImm.immVal; // 8-bit immediate
2745 assert((size == EA_2BYTE) || (size == EA_4BYTE)); // Only EA_2BYTE or EA_4BYTE forms
2746 if (size == EA_2BYTE)
2755 result <<= (8 * bySh);
2759 result |= ((1 << (8 * bySh)) - 1);
2765 /************************************************************************
2767 * returns true if 'imm' of 'size' bits (16/32) can be encoded
2768 * using the ARM64 'byteShifted immediate' form.
2769 * When a non-null value is passed for 'wbBSI' then this method
2770 * writes back the 'immBY' and 'immVal' values use to encode this immediate
2774 /*static*/ bool emitter::canEncodeByteShiftedImm(INT64 imm,
2777 emitter::byteShiftedImm* wbBSI)
2779 bool canEncode = false;
2780 bool onesShift = false; // true if we use the shifting ones variant
2781 unsigned bySh = 0; // number of bytes to shift: 0, 1, 2, 3
2782 unsigned imm8 = 0; // immediate to use in the encoding
2784 imm = normalizeImm64(imm, size);
2786 if (size == EA_1BYTE)
2788 imm8 = (unsigned)imm;
2789 assert(imm8 < 0x100);
2792 else if (size == EA_8BYTE)
2794 imm8 = (unsigned)imm;
2795 assert(imm8 < 0x100);
2800 assert((size == EA_2BYTE) || (size == EA_4BYTE)); // Only EA_2BYTE or EA_4BYTE forms
2802 unsigned immWidth = (size == EA_4BYTE) ? 32 : 16;
2803 unsigned maxBY = (size == EA_4BYTE) ? 4 : 2;
2805 // setup immMask to a (EA_2BYTE) 0x0000FFFF or (EA_4BYTE) 0xFFFFFFFF
2806 const UINT32 immMask = ((UINT32)-1) >> (32 - immWidth);
2807 const INT32 mask8 = (INT32)0xFF;
2809 // Try each of the valid by shift sizes
2810 for (bySh = 0; (bySh < maxBY); bySh++)
2812 INT32 curMask = mask8 << (bySh * 8); // Represents the mask of the bits in the current byteShifted
2813 INT32 checkBits = immMask & ~curMask;
2814 INT32 immCheck = (imm & checkBits);
2816 // Excluding the current byte (using ~curMask)
2817 // does the immediate have zero bits in every other bit that we care about?
2818 // or can be use the shifted one variant?
2819 // note we care about all 32-bits for EA_4BYTE
2820 // and we care about the lowest 16 bits for EA_2BYTE
2828 if ((bySh == 1) && (immCheck == 0xFF))
2833 else if ((bySh == 2) && (immCheck == 0xFFFF))
2841 imm8 = (unsigned)(((imm & curMask) >> (bySh * 8)) & mask8);
2849 // Does the caller want us to return the imm(i8,bySh) encoding values?
2851 if (wbBSI != nullptr)
2853 wbBSI->immOnes = onesShift;
2854 wbBSI->immBY = bySh;
2855 wbBSI->immVal = imm8;
2857 // Verify that what we are returning is correct.
2858 assert(imm == emitDecodeByteShiftedImm(*wbBSI, size));
2860 // Tell the caller that we can successfully encode this immediate
2861 // using a 'byteShifted immediate'.
2868 /************************************************************************
2870 * Convert a 32-bit immediate into its 'byteShifted immediate' representation imm(i8,by)
2873 /*static*/ emitter::byteShiftedImm emitter::emitEncodeByteShiftedImm(INT64 imm, emitAttr size, bool allow_MSL)
2875 emitter::byteShiftedImm result;
2876 result.immBSVal = 0;
2878 bool canEncode = canEncodeByteShiftedImm(imm, size, allow_MSL, &result);
2884 /************************************************************************
2886 * Convert a 'float 8-bit immediate' into a double.
2887 * inputs 'fpImm' a floatImm8 struct
2890 /*static*/ double emitter::emitDecodeFloatImm8(const emitter::floatImm8 fpImm)
2892 unsigned sign = fpImm.immSign;
2893 unsigned exp = fpImm.immExp ^ 0x4;
2894 unsigned mant = fpImm.immMant + 16;
2895 unsigned scale = 16 * 8;
2903 double result = ((double)mant) / ((double)scale);
2912 /************************************************************************
2914 * returns true if the 'immDbl' can be encoded using the 'float 8-bit immediate' form.
2915 * also returns the encoding if wbFPI is non-null
2919 /*static*/ bool emitter::canEncodeFloatImm8(double immDbl, emitter::floatImm8* wbFPI)
2921 bool canEncode = false;
2922 double val = immDbl;
2932 while ((val < 1.0) && (exp >= -4))
2937 while ((val >= 2.0) && (exp <= 5))
2944 int ival = (int)val;
2946 if ((exp >= 0) && (exp <= 7))
2948 if (val == (double)ival)
2952 if (wbFPI != nullptr)
2955 assert((ival >= 0) && (ival <= 15));
2957 wbFPI->immSign = sign;
2958 wbFPI->immExp = exp ^ 0x4;
2959 wbFPI->immMant = ival;
2960 unsigned imm8 = wbFPI->immFPIVal;
2961 assert((imm8 >= 0) && (imm8 <= 0xff));
2969 /************************************************************************
2971 * Convert a double into its 'float 8-bit immediate' representation
2974 /*static*/ emitter::floatImm8 emitter::emitEncodeFloatImm8(double immDbl)
2976 emitter::floatImm8 result;
2977 result.immFPIVal = 0;
2979 bool canEncode = canEncodeFloatImm8(immDbl, &result);
2985 /*****************************************************************************
2987 * For the given 'ins' returns the reverse instruction
2988 * if one exists, otherwise returns INS_INVALID
2991 /*static*/ instruction emitter::insReverse(instruction ins)
3020 /*****************************************************************************
3022 * For the given 'datasize' and 'elemsize', make the proper arrangement option
3023 * returns the insOpts that specifies the vector register arrangement
3024 * if one does not exist returns INS_OPTS_NONE
3027 /*static*/ insOpts emitter::optMakeArrangement(emitAttr datasize, emitAttr elemsize)
3029 insOpts result = INS_OPTS_NONE;
3031 if (datasize == EA_8BYTE)
3036 result = INS_OPTS_8B;
3039 result = INS_OPTS_4H;
3042 result = INS_OPTS_2S;
3045 result = INS_OPTS_1D;
3052 else if (datasize == EA_16BYTE)
3057 result = INS_OPTS_16B;
3060 result = INS_OPTS_8H;
3063 result = INS_OPTS_4S;
3066 result = INS_OPTS_2D;
3076 /*****************************************************************************
3078 * For the given 'datasize' and arrangement 'opts'
3079 * returns true is the pair spcifies a valid arrangement
3081 /*static*/ bool emitter::isValidArrangement(emitAttr datasize, insOpts opt)
3083 if (datasize == EA_8BYTE)
3085 if ((opt == INS_OPTS_8B) || (opt == INS_OPTS_4H) || (opt == INS_OPTS_2S) || (opt == INS_OPTS_1D))
3090 else if (datasize == EA_16BYTE)
3092 if ((opt == INS_OPTS_16B) || (opt == INS_OPTS_8H) || (opt == INS_OPTS_4S) || (opt == INS_OPTS_2D))
3100 // For the given 'arrangement' returns the 'datasize' specified by the vector register arrangement
3101 // asserts and returns EA_UNKNOWN if an invalid 'arrangement' value is passed
3103 /*static*/ emitAttr emitter::optGetDatasize(insOpts arrangement)
3105 if ((arrangement == INS_OPTS_8B) || (arrangement == INS_OPTS_4H) || (arrangement == INS_OPTS_2S) ||
3106 (arrangement == INS_OPTS_1D))
3110 else if ((arrangement == INS_OPTS_16B) || (arrangement == INS_OPTS_8H) || (arrangement == INS_OPTS_4S) ||
3111 (arrangement == INS_OPTS_2D))
3117 assert(!" invalid 'arrangement' value");
3122 // For the given 'arrangement' returns the 'elemsize' specified by the vector register arrangement
3123 // asserts and returns EA_UNKNOWN if an invalid 'arrangement' value is passed
3125 /*static*/ emitAttr emitter::optGetElemsize(insOpts arrangement)
3127 if ((arrangement == INS_OPTS_8B) || (arrangement == INS_OPTS_16B))
3131 else if ((arrangement == INS_OPTS_4H) || (arrangement == INS_OPTS_8H))
3135 else if ((arrangement == INS_OPTS_2S) || (arrangement == INS_OPTS_4S))
3139 else if ((arrangement == INS_OPTS_1D) || (arrangement == INS_OPTS_2D))
3145 assert(!" invalid 'arrangement' value");
3150 // For the given 'arrangement' returns the 'widen-arrangement' specified by the vector register arrangement
3151 // asserts and returns INS_OPTS_NONE if an invalid 'arrangement' value is passed
3153 /*static*/ insOpts emitter::optWidenElemsize(insOpts arrangement)
3155 if ((arrangement == INS_OPTS_8B) || (arrangement == INS_OPTS_16B))
3159 else if ((arrangement == INS_OPTS_4H) || (arrangement == INS_OPTS_8H))
3163 else if ((arrangement == INS_OPTS_2S) || (arrangement == INS_OPTS_4S))
3169 assert(!" invalid 'arrangement' value");
3170 return INS_OPTS_NONE;
3174 // For the given 'conversion' returns the 'dstsize' specified by the conversion option
3175 /*static*/ emitAttr emitter::optGetDstsize(insOpts conversion)
3179 case INS_OPTS_S_TO_8BYTE:
3180 case INS_OPTS_D_TO_8BYTE:
3181 case INS_OPTS_4BYTE_TO_D:
3182 case INS_OPTS_8BYTE_TO_D:
3183 case INS_OPTS_S_TO_D:
3184 case INS_OPTS_H_TO_D:
3188 case INS_OPTS_S_TO_4BYTE:
3189 case INS_OPTS_D_TO_4BYTE:
3190 case INS_OPTS_4BYTE_TO_S:
3191 case INS_OPTS_8BYTE_TO_S:
3192 case INS_OPTS_D_TO_S:
3193 case INS_OPTS_H_TO_S:
3197 case INS_OPTS_S_TO_H:
3198 case INS_OPTS_D_TO_H:
3203 assert(!" invalid 'conversion' value");
3208 // For the given 'conversion' returns the 'srcsize' specified by the conversion option
3209 /*static*/ emitAttr emitter::optGetSrcsize(insOpts conversion)
3213 case INS_OPTS_D_TO_8BYTE:
3214 case INS_OPTS_D_TO_4BYTE:
3215 case INS_OPTS_8BYTE_TO_D:
3216 case INS_OPTS_8BYTE_TO_S:
3217 case INS_OPTS_D_TO_S:
3218 case INS_OPTS_D_TO_H:
3222 case INS_OPTS_S_TO_8BYTE:
3223 case INS_OPTS_S_TO_4BYTE:
3224 case INS_OPTS_4BYTE_TO_S:
3225 case INS_OPTS_4BYTE_TO_D:
3226 case INS_OPTS_S_TO_D:
3227 case INS_OPTS_S_TO_H:
3231 case INS_OPTS_H_TO_S:
3232 case INS_OPTS_H_TO_D:
3237 assert(!" invalid 'conversion' value");
3242 // For the given 'size' and 'index' returns true if it specifies a valid index for a vector register of 'size'
3243 /*static*/ bool emitter::isValidVectorIndex(emitAttr datasize, emitAttr elemsize, ssize_t index)
3245 assert(isValidVectorDatasize(datasize));
3246 assert(isValidVectorElemsize(elemsize));
3248 bool result = false;
3251 if (datasize == EA_8BYTE)
3256 result = (index < 8);
3259 result = (index < 4);
3262 result = (index < 2);
3265 result = (index < 1);
3272 else if (datasize == EA_16BYTE)
3277 result = (index < 16);
3280 result = (index < 8);
3283 result = (index < 4);
3286 result = (index < 2);
3297 /*****************************************************************************
3299 * Add an instruction with no operands.
3302 void emitter::emitIns(instruction ins)
3304 instrDesc* id = emitNewInstrSmall(EA_8BYTE);
3305 insFormat fmt = emitInsFormat(ins);
3307 assert(fmt == IF_SN_0A);
3316 /*****************************************************************************
3318 * Add an instruction with a single immediate value.
3321 void emitter::emitIns_I(instruction ins, emitAttr attr, ssize_t imm)
3323 insFormat fmt = IF_NONE;
3325 /* Figure out the encoding format of the instruction */
3329 if ((imm & 0x0000ffff) == imm)
3335 assert(!"Instruction cannot be encoded: IF_SI_0A");
3342 assert(fmt != IF_NONE);
3344 instrDesc* id = emitNewInstrSC(attr, imm);
3353 /*****************************************************************************
3355 * Add an instruction referencing a single register.
3358 void emitter::emitIns_R(instruction ins, emitAttr attr, regNumber reg)
3360 emitAttr size = EA_SIZE(attr);
3361 insFormat fmt = IF_NONE;
3362 instrDesc* id = nullptr;
3364 /* Figure out the encoding format of the instruction */
3369 assert(isGeneralRegister(reg));
3370 id = emitNewInstrSmall(attr);
3379 assert(fmt != IF_NONE);
3388 /*****************************************************************************
3390 * Add an instruction referencing a register and a constant.
3393 void emitter::emitIns_R_I(instruction ins, emitAttr attr, regNumber reg, ssize_t imm, insOpts opt /* = INS_OPTS_NONE */)
3395 emitAttr size = EA_SIZE(attr);
3396 emitAttr elemsize = EA_UNKNOWN;
3397 insFormat fmt = IF_NONE;
3398 bool canEncode = false;
3400 /* Figure out the encoding format of the instruction */
3409 assert(insOptsNone(opt));
3410 assert(isGeneralRegister(reg));
3412 canEncode = canEncodeBitMaskImm(imm, size, &bmi);
3416 assert(isValidImmNRS(imm, size));
3424 assert(isValidGeneralDatasize(size));
3425 assert(insOptsNone(opt)); // No LSL here (you must use emitIns_R_I_I if a shift is needed)
3426 assert(isGeneralRegister(reg));
3427 assert(isValidUimm16(imm));
3431 assert(imm == emitDecodeHalfwordImm(hwi, size));
3439 assert(isValidGeneralDatasize(size));
3440 assert(insOptsNone(opt)); // No explicit LSL here
3441 // We will automatically determine the shift based upon the imm
3443 // First try the standard 'halfword immediate' imm(i16,hw)
3445 canEncode = canEncodeHalfwordImm(imm, size, &hwi);
3448 // uses a movz encoding
3449 assert(isGeneralRegister(reg));
3451 assert(isValidImmHWVal(imm, size));
3456 // Next try the ones-complement form of 'halfword immediate' imm(i16,hw)
3457 notOfImm = NOT_helper(imm, getBitWidth(size));
3458 canEncode = canEncodeHalfwordImm(notOfImm, size, &hwi);
3461 assert(isGeneralRegister(reg));
3463 ins = INS_movn; // uses a movn encoding
3464 assert(isValidImmHWVal(imm, size));
3469 // Finally try the 'bitmask immediate' imm(N,r,s)
3471 canEncode = canEncodeBitMaskImm(imm, size, &bmi);
3474 assert(isGeneralRegisterOrSP(reg));
3475 reg = encodingSPtoZR(reg);
3477 assert(isValidImmNRS(imm, size));
3483 assert(!"Instruction cannot be encoded: mov imm");
3489 assert(isValidVectorDatasize(size));
3490 assert(isVectorRegister(reg));
3491 if (insOptsNone(opt) && (size == EA_8BYTE))
3495 assert(isValidArrangement(size, opt));
3496 elemsize = optGetElemsize(opt);
3498 if (elemsize == EA_8BYTE)
3504 bool failed = false;
3507 INT64 loByte = uimm & 0xFF;
3508 if (((loByte == 0) || (loByte == 0xFF)) && (pos < 8))
3524 assert(isValidUimm8(imm));
3532 // No explicit LSL/MSL is used for the immediate
3533 // We will automatically determine the shift based upon the value of imm
3535 // First try the standard 'byteShifted immediate' imm(i8,bySh)
3537 canEncode = canEncodeByteShiftedImm(imm, elemsize, true, &bsi);
3541 assert(isValidImmBSVal(imm, size));
3546 // Next try the ones-complement form of the 'immediate' imm(i8,bySh)
3547 if ((elemsize == EA_2BYTE) || (elemsize == EA_4BYTE)) // Only EA_2BYTE or EA_4BYTE forms
3549 notOfImm = NOT_helper(imm, getBitWidth(elemsize));
3550 canEncode = canEncodeByteShiftedImm(notOfImm, elemsize, true, &bsi);
3554 ins = INS_mvni; // uses a mvni encoding
3555 assert(isValidImmBSVal(imm, size));
3566 assert(isValidVectorDatasize(size));
3567 assert(isVectorRegister(reg));
3568 assert(isValidArrangement(size, opt));
3569 elemsize = optGetElemsize(opt);
3570 assert((elemsize == EA_2BYTE) || (elemsize == EA_4BYTE)); // Only EA_2BYTE or EA_4BYTE forms
3574 // No explicit LSL/MSL is used for the immediate
3575 // We will automatically determine the shift based upon the value of imm
3577 // First try the standard 'byteShifted immediate' imm(i8,bySh)
3579 canEncode = canEncodeByteShiftedImm(imm, elemsize,
3580 (ins == INS_mvni), // mvni supports the ones shifting variant (aka MSL)
3585 assert(isValidImmBSVal(imm, size));
3593 assert(insOptsNone(opt));
3594 assert(isGeneralRegister(reg));
3596 if (unsigned_abs(imm) <= 0x0fff)
3600 ins = insReverse(ins);
3603 assert(isValidUimm12(imm));
3607 else if (canEncodeWithShiftImmBy12(imm)) // Try the shifted by 12 encoding
3609 // Encoding will use a 12-bit left shift of the immediate
3610 opt = INS_OPTS_LSL12;
3613 ins = insReverse(ins);
3616 assert((imm & 0xfff) == 0);
3618 assert(isValidUimm12(imm));
3624 assert(!"Instruction cannot be encoded: IF_DI_1A");
3632 } // end switch (ins)
3635 assert(fmt != IF_NONE);
3637 instrDesc* id = emitNewInstrSC(attr, imm);
3649 /*****************************************************************************
3651 * Add an instruction referencing a register and a floating point constant.
3654 void emitter::emitIns_R_F(
3655 instruction ins, emitAttr attr, regNumber reg, double immDbl, insOpts opt /* = INS_OPTS_NONE */)
3658 emitAttr size = EA_SIZE(attr);
3659 emitAttr elemsize = EA_UNKNOWN;
3660 insFormat fmt = IF_NONE;
3662 bool canEncode = false;
3664 /* Figure out the encoding format of the instruction */
3671 assert(insOptsNone(opt));
3672 assert(isValidVectorElemsizeFloat(size));
3673 assert(isVectorRegister(reg));
3682 assert(isVectorRegister(reg));
3684 canEncode = canEncodeFloatImm8(immDbl, &fpi);
3686 if (insOptsAnyArrangement(opt))
3689 assert(isValidVectorDatasize(size));
3690 assert(isValidArrangement(size, opt));
3691 elemsize = optGetElemsize(opt);
3692 assert(isValidVectorElemsizeFloat(elemsize));
3693 assert(opt != INS_OPTS_1D); // Reserved encoding
3697 imm = fpi.immFPIVal;
3698 assert((imm >= 0) && (imm <= 0xff));
3705 assert(insOptsNone(opt));
3706 assert(isValidVectorElemsizeFloat(size));
3710 imm = fpi.immFPIVal;
3711 assert((imm >= 0) && (imm <= 0xff));
3721 } // end switch (ins)
3724 assert(fmt != IF_NONE);
3726 instrDesc* id = emitNewInstrSC(attr, imm);
3738 /*****************************************************************************
3740 * Add an instruction referencing two registers
3743 void emitter::emitIns_R_R(
3744 instruction ins, emitAttr attr, regNumber reg1, regNumber reg2, insOpts opt /* = INS_OPTS_NONE */)
3746 emitAttr size = EA_SIZE(attr);
3747 emitAttr elemsize = EA_UNKNOWN;
3748 insFormat fmt = IF_NONE;
3750 /* Figure out the encoding format of the instruction */
3754 assert(insOptsNone(opt));
3755 // Is the mov even necessary?
3758 // A mov with a EA_4BYTE has the side-effect of clearing the upper bits
3759 // So only eliminate mov instructions that are not clearing the upper bits
3761 if (isGeneralRegisterOrSP(reg1) && (size == EA_8BYTE))
3765 else if (isVectorRegister(reg1) && (size == EA_16BYTE))
3771 // Check for the 'mov' aliases for the vector registers
3772 if (isVectorRegister(reg1))
3774 if (isVectorRegister(reg2) && isValidVectorDatasize(size))
3776 return emitIns_R_R_R(INS_mov, size, reg1, reg2, reg2);
3780 return emitIns_R_R_I(INS_mov, size, reg1, reg2, 0);
3785 if (isVectorRegister(reg2))
3787 assert(isGeneralRegister(reg1));
3788 return emitIns_R_R_I(INS_mov, size, reg1, reg2, 0);
3792 // Is this a MOV to/from SP instruction?
3793 if ((reg1 == REG_SP) || (reg2 == REG_SP))
3795 assert(isGeneralRegisterOrSP(reg1));
3796 assert(isGeneralRegisterOrSP(reg2));
3797 reg1 = encodingSPtoZR(reg1);
3798 reg2 = encodingSPtoZR(reg2);
3803 assert(insOptsNone(opt));
3804 assert(isGeneralRegister(reg1));
3805 assert(isGeneralRegisterOrZR(reg2));
3812 assert(insOptsAnyArrangement(opt));
3813 assert(isVectorRegister(reg1));
3814 assert(isGeneralRegisterOrZR(reg2));
3815 assert(isValidVectorDatasize(size));
3816 assert(isValidArrangement(size, opt));
3822 assert(isVectorRegister(reg1));
3823 assert(isVectorRegister(reg2));
3824 // for 'NOT' we can construct the arrangement: 8B or 16B
3825 if ((ins == INS_not) && insOptsNone(opt))
3827 assert(isValidVectorDatasize(size));
3828 elemsize = EA_1BYTE;
3829 opt = optMakeArrangement(size, elemsize);
3831 if (insOptsNone(opt))
3834 assert(size == EA_8BYTE); // Only type D is supported
3840 assert(insOptsAnyArrangement(opt));
3841 assert(isValidVectorDatasize(size));
3842 assert(isValidArrangement(size, opt));
3843 elemsize = optGetElemsize(opt);
3846 assert(elemsize == EA_1BYTE);
3854 if (isVectorRegister(reg1))
3856 assert(isVectorRegister(reg2));
3857 // for 'mvn' we can construct the arrangement: 8B or 16b
3858 if ((ins == INS_mvn) && insOptsNone(opt))
3860 assert(isValidVectorDatasize(size));
3861 elemsize = EA_1BYTE;
3862 opt = optMakeArrangement(size, elemsize);
3864 if (insOptsNone(opt))
3867 assert(size == EA_8BYTE); // Only type D is supported
3873 assert(isValidVectorDatasize(size));
3874 assert(isValidArrangement(size, opt));
3875 elemsize = optGetElemsize(opt);
3878 assert(elemsize == EA_1BYTE); // Only supports 8B or 16B
3887 assert(insOptsNone(opt));
3888 assert(isGeneralRegister(reg1));
3889 assert(isGeneralRegisterOrZR(reg2));
3894 assert(size == EA_8BYTE);
3901 assert(insOptsNone(opt));
3902 assert(isValidGeneralDatasize(size));
3903 assert(isGeneralRegister(reg1));
3904 assert(isGeneralRegister(reg2));
3912 return emitIns_R_R_I(ins, size, reg1, reg2, 0, opt);
3920 if (isVectorRegister(reg1))
3922 assert(isVectorRegister(reg2));
3923 assert(isValidVectorDatasize(size));
3924 assert(isValidArrangement(size, opt));
3925 elemsize = optGetElemsize(opt);
3926 if ((ins == INS_cls) || (ins == INS_clz))
3928 assert(elemsize != EA_8BYTE); // No encoding for type D
3930 else if (ins == INS_rev32)
3932 assert((elemsize == EA_2BYTE) || (elemsize == EA_1BYTE));
3936 assert(elemsize == EA_1BYTE); // Only supports 8B or 16B
3943 // Doesn't have general register version(s)
3950 assert(insOptsNone(opt));
3951 assert(isGeneralRegister(reg1));
3952 assert(isGeneralRegister(reg2));
3953 if (ins == INS_rev32)
3955 assert(size == EA_8BYTE);
3959 assert(isValidGeneralDatasize(size));
3972 assert(isVectorRegister(reg1));
3973 assert(isVectorRegister(reg2));
3974 assert(isValidVectorDatasize(size));
3975 assert(isValidArrangement(size, opt));
3976 elemsize = optGetElemsize(opt);
3977 assert(elemsize != EA_8BYTE); // No encoding for type D
3983 assert(isVectorRegister(reg1));
3984 assert(isVectorRegister(reg2));
3985 assert(isValidVectorDatasize(size));
3986 assert(isValidArrangement(size, opt));
3987 elemsize = optGetElemsize(opt);
3988 assert(size == (ins == INS_xtn) ? EA_8BYTE : EA_16BYTE); // Size is determined by instruction
3989 assert(elemsize != EA_8BYTE); // Narrowing must not end with 8 byte data
3997 assert(isValidGeneralDatasize(size));
4009 assert(isValidGeneralLSDatasize(size));
4010 assert(isGeneralRegisterOrZR(reg1));
4011 assert(isGeneralRegisterOrSP(reg2));
4012 assert(insOptsNone(opt));
4014 reg2 = encodingSPtoZR(reg2);
4032 assert(insOptsNone(opt));
4033 emitIns_R_R_I(ins, attr, reg1, reg2, 0, INS_OPTS_NONE);
4037 assert(isValidVectorElemsizeFloat(size));
4039 // Is the mov even necessary?
4045 if (isVectorRegister(reg1))
4047 if (isVectorRegister(reg2))
4049 assert(insOptsNone(opt));
4054 assert(isGeneralRegister(reg2));
4056 // if the optional conversion specifier is not present we calculate it
4057 if (opt == INS_OPTS_NONE)
4059 opt = (size == EA_4BYTE) ? INS_OPTS_4BYTE_TO_S : INS_OPTS_8BYTE_TO_D;
4061 assert(insOptsConvertIntToFloat(opt));
4068 assert(isGeneralRegister(reg1));
4069 assert(isVectorRegister(reg2));
4071 // if the optional conversion specifier is not present we calculate it
4072 if (opt == INS_OPTS_NONE)
4074 opt = (size == EA_4BYTE) ? INS_OPTS_S_TO_4BYTE : INS_OPTS_D_TO_8BYTE;
4076 assert(insOptsConvertFloatToInt(opt));
4084 assert(insOptsNone(opt));
4085 assert(isValidVectorElemsizeFloat(size));
4086 assert(isVectorRegister(reg1));
4087 assert(isVectorRegister(reg2));
4101 if (insOptsAnyArrangement(opt))
4104 assert(isVectorRegister(reg1));
4105 assert(isVectorRegister(reg2));
4106 assert(isValidVectorDatasize(size));
4107 assert(isValidArrangement(size, opt));
4108 elemsize = optGetElemsize(opt);
4109 assert(isValidVectorElemsizeFloat(elemsize));
4110 assert(opt != INS_OPTS_1D); // Reserved encoding
4116 assert(isVectorRegister(reg2));
4117 if (isVectorRegister(reg1))
4119 assert(insOptsNone(opt));
4120 assert(isValidVectorElemsizeFloat(size));
4125 assert(isGeneralRegister(reg1));
4126 assert(insOptsConvertFloatToInt(opt));
4127 assert(isValidVectorElemsizeFloat(size));
4137 assert(isVectorRegister(reg1));
4138 assert(isVectorRegister(reg2));
4139 assert(isValidVectorDatasize(size));
4140 assert(insOptsNone(opt));
4141 assert(size == EA_8BYTE); // Narrowing from Double or Widening to Double (Half not supported)
4147 if (insOptsAnyArrangement(opt))
4150 assert(isVectorRegister(reg1));
4151 assert(isVectorRegister(reg2));
4152 assert(isValidVectorDatasize(size));
4153 assert(isValidArrangement(size, opt));
4154 elemsize = optGetElemsize(opt);
4155 assert(isValidVectorElemsizeFloat(elemsize));
4156 assert(opt != INS_OPTS_1D); // Reserved encoding
4162 assert(isVectorRegister(reg1));
4163 if (isVectorRegister(reg2))
4165 assert(insOptsNone(opt));
4166 assert(isValidVectorElemsizeFloat(size));
4171 assert(isGeneralRegister(reg2));
4172 assert(insOptsConvertIntToFloat(opt));
4173 assert(isValidVectorElemsizeFloat(size));
4189 if (insOptsAnyArrangement(opt))
4192 assert(isVectorRegister(reg1));
4193 assert(isVectorRegister(reg2));
4194 assert(isValidVectorDatasize(size));
4195 assert(isValidArrangement(size, opt));
4196 elemsize = optGetElemsize(opt);
4197 assert(isValidVectorElemsizeFloat(elemsize));
4198 assert(opt != INS_OPTS_1D); // Reserved encoding
4204 assert(insOptsNone(opt));
4205 assert(isValidVectorElemsizeFloat(size));
4206 assert(isVectorRegister(reg1));
4207 assert(isVectorRegister(reg2));
4214 assert(insOptsNone(opt));
4215 assert(isValidVectorElemsizeFloat(size));
4216 assert(isVectorRegister(reg1));
4217 assert(isVectorRegister(reg2));
4222 assert(insOptsConvertFloatToFloat(opt));
4223 assert(isValidVectorFcvtsize(size));
4224 assert(isVectorRegister(reg1));
4225 assert(isVectorRegister(reg2));
4233 } // end switch (ins)
4235 assert(fmt != IF_NONE);
4237 instrDesc* id = emitNewInstrSmall(attr);
4250 /*****************************************************************************
4252 * Add an instruction referencing a register and two constants.
4255 void emitter::emitIns_R_I_I(
4256 instruction ins, emitAttr attr, regNumber reg, ssize_t imm1, ssize_t imm2, insOpts opt /* = INS_OPTS_NONE */)
4258 emitAttr size = EA_SIZE(attr);
4259 insFormat fmt = IF_NONE;
4260 size_t immOut = 0; // composed from imm1 and imm2 and stored in the instrDesc
4262 /* Figure out the encoding format of the instruction */
4269 ins = INS_movz; // INS_mov with LSL is an alias for INS_movz LSL
4275 assert(isValidGeneralDatasize(size));
4276 assert(isGeneralRegister(reg));
4277 assert(isValidUimm16(imm1));
4278 assert(insOptsLSL(opt)); // Must be INS_OPTS_LSL
4280 if (size == EA_8BYTE)
4282 assert((imm2 == 0) || (imm2 == 16) || // shift amount: 0, 16, 32 or 48
4283 (imm2 == 32) || (imm2 == 48));
4287 assert((imm2 == 0) || (imm2 == 16)); // shift amount: 0 or 16
4322 immOut = hwi.immHWVal;
4323 assert(isValidImmHWVal(immOut, size));
4332 } // end switch (ins)
4334 assert(fmt != IF_NONE);
4336 instrDesc* id = emitNewInstrSC(attr, immOut);
4347 /*****************************************************************************
4349 * Add an instruction referencing two registers and a constant.
4352 void emitter::emitIns_R_R_I(
4353 instruction ins, emitAttr attr, regNumber reg1, regNumber reg2, ssize_t imm, insOpts opt /* = INS_OPTS_NONE */)
4355 emitAttr size = EA_SIZE(attr);
4356 emitAttr elemsize = EA_UNKNOWN;
4357 insFormat fmt = IF_NONE;
4358 bool isLdSt = false;
4359 bool isSIMD = false;
4360 bool isAddSub = false;
4361 bool setFlags = false;
4363 bool unscaledOp = false;
4365 /* Figure out the encoding format of the instruction */
4372 // Check for the 'mov' aliases for the vector registers
4373 assert(insOptsNone(opt));
4374 assert(isValidVectorElemsize(size));
4376 assert(isValidVectorIndex(EA_16BYTE, elemsize, imm));
4378 if (isVectorRegister(reg1))
4380 if (isGeneralRegisterOrZR(reg2))
4382 fmt = IF_DV_2C; // Alias for 'ins'
4385 else if (isVectorRegister(reg2))
4387 fmt = IF_DV_2E; // Alias for 'dup'
4391 else // isGeneralRegister(reg1)
4393 assert(isGeneralRegister(reg1));
4394 if (isVectorRegister(reg2))
4396 fmt = IF_DV_2B; // Alias for 'umov'
4400 assert(!" invalid INS_mov operands");
4406 assert(insOptsNone(opt));
4407 assert(isValidGeneralDatasize(size));
4408 assert(isGeneralRegister(reg1));
4409 assert(isGeneralRegister(reg2));
4410 assert(isValidImmShift(imm, size));
4415 assert(insOptsNone(opt));
4416 assert(isValidGeneralDatasize(size));
4417 assert(isGeneralRegister(reg1));
4418 assert(isGeneralRegister(reg2));
4419 assert(isValidImmShift(imm, size));
4434 assert(isVectorRegister(reg1));
4435 assert(isVectorRegister(reg2));
4436 if (insOptsAnyArrangement(opt))
4439 assert(isValidVectorDatasize(size));
4440 assert(isValidArrangement(size, opt));
4441 elemsize = optGetElemsize(opt);
4442 assert(isValidVectorElemsize(elemsize));
4443 assert(isValidImmShift(imm, elemsize));
4444 assert(opt != INS_OPTS_1D); // Reserved encoding
4451 assert(insOptsNone(opt));
4452 assert(size == EA_8BYTE); // only supported size
4453 assert(isValidImmShift(imm, size));
4467 assert(isVectorRegister(reg1));
4468 assert(isVectorRegister(reg2));
4470 assert(size == EA_8BYTE);
4471 assert(isValidArrangement(size, opt));
4472 elemsize = optGetElemsize(opt);
4473 assert(elemsize != EA_8BYTE); // Reserved encodings
4474 assert(isValidVectorElemsize(elemsize));
4475 assert(isValidImmShift(imm, elemsize));
4488 assert(isVectorRegister(reg1));
4489 assert(isVectorRegister(reg2));
4491 assert(size == EA_16BYTE);
4492 assert(isValidArrangement(size, opt));
4493 elemsize = optGetElemsize(opt);
4494 assert(elemsize != EA_8BYTE); // Reserved encodings
4495 assert(isValidVectorElemsize(elemsize));
4496 assert(isValidImmShift(imm, elemsize));
4503 assert(isValidGeneralDatasize(size));
4504 assert(isGeneralRegister(reg1));
4505 assert(isGeneralRegisterOrZR(reg2));
4509 assert(insOptsNone(opt)); // a zero imm, means no alu shift kind
4517 assert(insOptsAnyShift(opt)); // a non-zero imm, must select shift kind
4521 assert(insOptsAluShift(opt)); // a non-zero imm, must select shift kind, can't use ROR
4523 assert(isValidImmShift(imm, size));
4529 assert(isValidGeneralDatasize(size));
4530 assert(isGeneralRegisterOrZR(reg1));
4531 assert(isGeneralRegister(reg2));
4533 if (insOptsAnyShift(opt))
4535 assert(isValidImmShift(imm, size) && (imm != 0));
4540 assert(insOptsNone(opt)); // a zero imm, means no alu shift kind
4548 assert(isValidGeneralDatasize(size));
4549 assert(isGeneralRegisterOrSP(reg1));
4550 assert(isGeneralRegister(reg2));
4552 reg1 = encodingSPtoZR(reg1);
4553 if (insOptsAnyExtend(opt))
4555 assert((imm >= 0) && (imm <= 4));
4561 assert(insOptsNone(opt)); // a zero imm, means no alu shift kind
4567 assert(insOptsAnyShift(opt)); // a non-zero imm, must select shift kind
4568 assert(isValidImmShift(imm, size));
4577 assert(insOptsNone(opt));
4578 assert(isGeneralRegister(reg2));
4579 if (ins == INS_ands)
4581 assert(isGeneralRegister(reg1));
4585 assert(isGeneralRegisterOrSP(reg1));
4586 reg1 = encodingSPtoZR(reg1);
4590 canEncode = canEncodeBitMaskImm(imm, size, &bmi);
4594 assert(isValidImmNRS(imm, size));
4599 case INS_dup: // by element, imm selects the element of reg2
4600 assert(isVectorRegister(reg1));
4601 if (isVectorRegister(reg2))
4603 if (insOptsAnyArrangement(opt))
4606 assert(isValidVectorDatasize(size));
4607 assert(isValidArrangement(size, opt));
4608 elemsize = optGetElemsize(opt);
4609 assert(isValidVectorElemsize(elemsize));
4610 assert(isValidVectorIndex(size, elemsize, imm));
4611 assert(opt != INS_OPTS_1D); // Reserved encoding
4618 assert(insOptsNone(opt));
4620 assert(isValidVectorElemsize(elemsize));
4621 assert(isValidVectorIndex(EA_16BYTE, elemsize, imm));
4628 case INS_ins: // (MOV from general)
4629 assert(insOptsNone(opt));
4630 assert(isValidVectorElemsize(size));
4631 assert(isVectorRegister(reg1));
4632 assert(isGeneralRegisterOrZR(reg2));
4634 assert(isValidVectorIndex(EA_16BYTE, elemsize, imm));
4638 case INS_umov: // (MOV to general)
4639 assert(insOptsNone(opt));
4640 assert(isValidVectorElemsize(size));
4641 assert(isGeneralRegister(reg1));
4642 assert(isVectorRegister(reg2));
4644 assert(isValidVectorIndex(EA_16BYTE, elemsize, imm));
4649 assert(insOptsNone(opt));
4650 assert(isValidVectorElemsize(size));
4651 assert(size != EA_8BYTE); // no encoding, use INS_umov
4652 assert(isGeneralRegister(reg1));
4653 assert(isVectorRegister(reg2));
4655 assert(isValidVectorIndex(EA_16BYTE, elemsize, imm));
4673 // 'size' specifies how we sign-extend into 4 or 8 bytes of the target register
4674 assert(isValidGeneralDatasize(size));
4675 unscaledOp = (ins == INS_ldursb);
4682 // 'size' specifies how we sign-extend into 4 or 8 bytes of the target register
4683 assert(isValidGeneralDatasize(size));
4684 unscaledOp = (ins == INS_ldursh);
4691 // 'size' specifies how we sign-extend into 4 or 8 bytes of the target register
4692 assert(size == EA_8BYTE);
4693 unscaledOp = (ins == INS_ldursw);
4732 // Is the target a vector register?
4733 if (isVectorRegister(reg1))
4735 assert(isValidVectorLSDatasize(size));
4736 assert(isGeneralRegisterOrSP(reg2));
4741 assert(isValidGeneralDatasize(size));
4744 scale = NaturalScale_helper(size);
4750 // Is the target a vector register?
4751 if (isVectorRegister(reg1))
4753 assert(isValidVectorLSDatasize(size));
4754 assert(isGeneralRegisterOrSP(reg2));
4759 assert(isValidGeneralDatasize(size));
4770 } // end switch (ins)
4778 assert(isValidVectorLSDatasize(size));
4779 assert(isVectorRegister(reg1));
4780 assert((scale >= 0) && (scale <= 4));
4784 assert(isValidGeneralLSDatasize(size));
4785 assert(isGeneralRegisterOrZR(reg1));
4786 assert((scale >= 0) && (scale <= 3));
4789 assert(isGeneralRegisterOrSP(reg2));
4791 // Load/Store reserved encodings:
4792 if (insOptsIndexed(opt))
4794 assert(reg1 != reg2);
4797 reg2 = encodingSPtoZR(reg2);
4799 ssize_t mask = (1 << scale) - 1; // the mask of low bits that must be zero to encode the immediate
4802 assert(insOptsNone(opt)); // PRE/POST Index doesn't make sense with an immediate of zero
4806 else if (insOptsIndexed(opt) || unscaledOp || (imm < 0) || ((imm & mask) != 0))
4808 if ((imm >= -256) && (imm <= 255))
4814 assert(!"Instruction cannot be encoded: IF_LS_2C");
4819 assert(insOptsNone(opt));
4820 assert(!unscaledOp);
4822 if (((imm & mask) == 0) && ((imm >> scale) < 0x1000))
4824 imm >>= scale; // The immediate is scaled by the size of the ld/st
4830 assert(!"Instruction cannot be encoded: IF_LS_2B");
4837 assert(insOptsNone(opt));
4839 if (setFlags) // Can't encode SP with setFlags
4841 assert(isGeneralRegister(reg1));
4842 assert(isGeneralRegister(reg2));
4846 assert(isGeneralRegisterOrSP(reg1));
4847 assert(isGeneralRegisterOrSP(reg2));
4849 // Is it just a mov?
4852 // Is the mov even necessary?
4855 emitIns_R_R(INS_mov, attr, reg1, reg2);
4860 reg1 = encodingSPtoZR(reg1);
4861 reg2 = encodingSPtoZR(reg2);
4864 if (unsigned_abs(imm) <= 0x0fff)
4868 ins = insReverse(ins);
4871 assert(isValidUimm12(imm));
4874 else if (canEncodeWithShiftImmBy12(imm)) // Try the shifted by 12 encoding
4876 // Encoding will use a 12-bit left shift of the immediate
4877 opt = INS_OPTS_LSL12;
4880 ins = insReverse(ins);
4883 assert((imm & 0xfff) == 0);
4885 assert(isValidUimm12(imm));
4890 assert(!"Instruction cannot be encoded: IF_DI_2A");
4894 assert(fmt != IF_NONE);
4896 instrDesc* id = emitNewInstrSC(attr, imm);
4909 /*****************************************************************************
4911 * Add an instruction referencing two registers and a constant.
4912 * Also checks for a large immediate that needs a second instruction
4913 * and will load it in reg1
4915 * - Supports instructions: add, adds, sub, subs, and, ands, eor and orr
4916 * - Requires that reg1 is a general register and not SP or ZR
4917 * - Requires that reg1 != reg2
4919 void emitter::emitIns_R_R_Imm(instruction ins, emitAttr attr, regNumber reg1, regNumber reg2, ssize_t imm)
4921 assert(isGeneralRegister(reg1));
4922 assert(reg1 != reg2);
4924 bool immFits = true;
4932 immFits = emitter::emitIns_valid_imm_for_add(imm, attr);
4939 immFits = emitter::emitIns_valid_imm_for_alu(imm, attr);
4943 assert(!"Unsupported instruction in emitIns_R_R_Imm");
4948 emitIns_R_R_I(ins, attr, reg1, reg2, imm);
4952 // Load 'imm' into the reg1 register
4953 // then issue: 'ins' reg1, reg2, reg1
4955 codeGen->instGen_Set_Reg_To_Imm(attr, reg1, imm);
4956 emitIns_R_R_R(ins, attr, reg1, reg2, reg1);
4960 /*****************************************************************************
4962 * Add an instruction referencing three registers.
4965 void emitter::emitIns_R_R_R(
4966 instruction ins, emitAttr attr, regNumber reg1, regNumber reg2, regNumber reg3, insOpts opt) /* = INS_OPTS_NONE */
4968 emitAttr size = EA_SIZE(attr);
4969 emitAttr elemsize = EA_UNKNOWN;
4970 insFormat fmt = IF_NONE;
4972 /* Figure out the encoding format of the instruction */
4996 assert(insOptsNone(opt));
4997 assert(isValidGeneralDatasize(size));
4998 assert(isGeneralRegister(reg1));
4999 assert(isGeneralRegister(reg2));
5000 assert(isGeneralRegister(reg3));
5005 if (insOptsNone(opt))
5008 assert(isValidGeneralDatasize(size));
5009 assert(isGeneralRegister(reg1));
5010 assert(isGeneralRegister(reg2));
5011 assert(isGeneralRegister(reg3));
5020 assert(insOptsAnyArrangement(opt));
5021 assert(isVectorRegister(reg1));
5022 assert(isVectorRegister(reg2));
5023 assert(isVectorRegister(reg3));
5024 assert(isValidVectorDatasize(size));
5025 assert(isValidArrangement(size, opt));
5026 elemsize = optGetElemsize(opt);
5027 if (ins == INS_pmul)
5029 assert(elemsize == EA_1BYTE); // only supports 8B or 16B
5031 else // INS_mul, INS_mla, INS_mls
5033 assert(elemsize != EA_8BYTE); // can't use 2D or 1D
5040 if (isVectorRegister(reg1))
5042 assert(isVectorRegister(reg2));
5043 assert(isVectorRegister(reg3));
5045 if (insOptsAnyArrangement(opt))
5048 assert(opt != INS_OPTS_1D); // Reserved encoding
5049 assert(isValidVectorDatasize(size));
5050 assert(isValidArrangement(size, opt));
5056 assert(insOptsNone(opt));
5057 assert(size == EA_8BYTE);
5066 emitIns_R_R_R_I(ins, attr, reg1, reg2, reg3, 0, INS_OPTS_NONE);
5075 assert(isVectorRegister(reg1));
5076 assert(isVectorRegister(reg2));
5077 assert(isVectorRegister(reg3));
5079 if (isValidVectorDatasize(size))
5082 assert(insOptsAnyArrangement(opt));
5083 assert(isValidArrangement(size, opt));
5084 elemsize = optGetElemsize(opt);
5091 assert(size == EA_8BYTE); // Only Double supported
5099 assert(isVectorRegister(reg1));
5100 assert(isVectorRegister(reg2));
5101 assert(isVectorRegister(reg3));
5103 if (isValidVectorDatasize(size))
5106 assert(insOptsAnyArrangement(opt));
5107 assert(isValidArrangement(size, opt));
5108 elemsize = optGetElemsize(opt);
5109 assert((elemsize == EA_8BYTE) || (elemsize == EA_4BYTE)); // Only Double/Float supported
5110 assert(opt != INS_OPTS_1D); // Reserved encoding
5117 assert((size == EA_8BYTE) || (size == EA_4BYTE)); // Only Double/Float supported
5130 assert(isVectorRegister(reg1));
5131 assert(isVectorRegister(reg2));
5132 assert(isVectorRegister(reg3));
5133 assert(insOptsAnyArrangement(opt));
5136 assert(isValidVectorDatasize(size));
5137 assert(isValidArrangement(size, opt));
5138 elemsize = optGetElemsize(opt);
5139 assert(elemsize != EA_8BYTE); // can't use 2D or 1D
5145 assert(isVectorRegister(reg1));
5146 assert(isVectorRegister(reg2));
5147 assert(reg2 == reg3);
5148 assert(isValidVectorDatasize(size));
5149 // INS_mov is an alias for INS_orr (vector register)
5150 if (opt == INS_OPTS_NONE)
5152 elemsize = EA_1BYTE;
5153 opt = optMakeArrangement(size, elemsize);
5155 assert(isValidArrangement(size, opt));
5164 if (isVectorRegister(reg1))
5166 assert(isValidVectorDatasize(size));
5167 assert(isVectorRegister(reg2));
5168 assert(isVectorRegister(reg3));
5169 if (opt == INS_OPTS_NONE)
5171 elemsize = EA_1BYTE;
5172 opt = optMakeArrangement(size, elemsize);
5174 assert(isValidArrangement(size, opt));
5183 emitIns_R_R_R_I(ins, attr, reg1, reg2, reg3, 0, INS_OPTS_NONE);
5189 assert(isValidVectorDatasize(size));
5190 assert(isVectorRegister(reg1));
5191 assert(isVectorRegister(reg2));
5192 assert(isVectorRegister(reg3));
5193 if (opt == INS_OPTS_NONE)
5195 elemsize = EA_1BYTE;
5196 opt = optMakeArrangement(size, elemsize);
5198 assert(isValidArrangement(size, opt));
5210 assert(isVectorRegister(reg1));
5211 assert(isVectorRegister(reg2));
5212 assert(isVectorRegister(reg3));
5213 if (insOptsAnyArrangement(opt))
5216 assert(isValidVectorDatasize(size));
5217 assert(isValidArrangement(size, opt));
5218 elemsize = optGetElemsize(opt);
5219 assert(isValidVectorElemsizeFloat(elemsize));
5220 assert(opt != INS_OPTS_1D); // Reserved encoding
5226 assert(insOptsNone(opt));
5227 assert(isValidScalarDatasize(size));
5234 assert(insOptsNone(opt));
5235 assert(isVectorRegister(reg1));
5236 assert(isVectorRegister(reg2));
5237 assert(isVectorRegister(reg3));
5238 assert(isValidScalarDatasize(size));
5245 assert(isVectorRegister(reg1));
5246 assert(isVectorRegister(reg2));
5247 assert(isVectorRegister(reg3));
5248 assert(insOptsAnyArrangement(opt)); // no scalar encoding, use 4-operand 'fmadd' or 'fmsub'
5251 assert(isValidVectorDatasize(size));
5252 assert(isValidArrangement(size, opt));
5253 elemsize = optGetElemsize(opt);
5254 assert(isValidVectorElemsizeFloat(elemsize));
5255 assert(opt != INS_OPTS_1D); // Reserved encoding
5268 emitIns_R_R_R_Ext(ins, attr, reg1, reg2, reg3, opt);
5276 emitIns_R_R_R_I(ins, attr, reg1, reg2, reg3, 0);
5285 assert(isGeneralRegisterOrZR(reg1));
5286 assert(isGeneralRegisterOrZR(reg2));
5287 assert(isGeneralRegisterOrSP(reg3));
5295 } // end switch (ins)
5297 assert(fmt != IF_NONE);
5299 instrDesc* id = emitNewInstr(attr);
5313 /*****************************************************************************
5315 * Add an instruction referencing three registers and a constant.
5318 void emitter::emitIns_R_R_R_I(instruction ins,
5324 insOpts opt /* = INS_OPTS_NONE */,
5325 emitAttr attrReg2 /* = EA_UNKNOWN */)
5327 emitAttr size = EA_SIZE(attr);
5328 emitAttr elemsize = EA_UNKNOWN;
5329 insFormat fmt = IF_NONE;
5330 bool isLdSt = false;
5331 bool isSIMD = false;
5332 bool isAddSub = false;
5333 bool setFlags = false;
5336 /* Figure out the encoding format of the instruction */
5340 assert(insOptsNone(opt));
5341 assert(isValidGeneralDatasize(size));
5342 assert(isGeneralRegister(reg1));
5343 assert(isGeneralRegister(reg2));
5344 assert(isGeneralRegister(reg3));
5345 assert(isValidImmShift(imm, size));
5357 assert(isValidGeneralDatasize(size));
5358 assert(isGeneralRegister(reg1));
5359 assert(isGeneralRegister(reg2));
5360 assert(isGeneralRegister(reg3));
5361 assert(isValidImmShift(imm, size));
5364 assert(insOptsNone(opt)); // a zero imm, means no shift kind
5369 assert(insOptsAnyShift(opt)); // a non-zero imm, must select shift kind
5374 case INS_fmul: // by element, imm[0..3] selects the element of reg3
5378 assert(isVectorRegister(reg1));
5379 assert(isVectorRegister(reg2));
5380 assert(isVectorRegister(reg3));
5381 if (insOptsAnyArrangement(opt))
5384 assert(isValidVectorDatasize(size));
5385 assert(isValidArrangement(size, opt));
5386 elemsize = optGetElemsize(opt);
5387 assert(isValidVectorElemsizeFloat(elemsize));
5388 assert(isValidVectorIndex(size, elemsize, imm));
5389 assert(opt != INS_OPTS_1D); // Reserved encoding
5395 assert(insOptsNone(opt));
5396 assert(isValidScalarDatasize(size));
5398 assert(isValidVectorIndex(EA_16BYTE, elemsize, imm));
5403 case INS_mul: // by element, imm[0..7] selects the element of reg3
5406 assert(isVectorRegister(reg1));
5407 assert(isVectorRegister(reg2));
5408 assert(isVectorRegister(reg3));
5410 assert(insOptsAnyArrangement(opt));
5411 assert(isValidVectorDatasize(size));
5412 assert(isValidArrangement(size, opt));
5413 elemsize = optGetElemsize(opt);
5414 assert(isValidVectorIndex(EA_16BYTE, elemsize, imm));
5415 // Only has encodings for H or S elemsize
5416 assert((elemsize == EA_2BYTE) || (elemsize == EA_4BYTE));
5417 // Only has encodings for V0..V15
5418 if ((elemsize == EA_2BYTE) && (reg3 >= REG_V16))
5420 noway_assert(!"Invalid reg3");
5444 assert(insOptsNone(opt)); // Can't use Pre/Post index on these two instructions
5449 // Is the target a vector register?
5450 if (isVectorRegister(reg1))
5452 scale = NaturalScale_helper(size);
5457 scale = (size == EA_8BYTE) ? 3 : 2;
5466 } // end switch (ins)
5471 assert(isGeneralRegisterOrSP(reg3));
5472 assert(insOptsNone(opt) || insOptsIndexed(opt));
5476 assert(isValidVectorLSPDatasize(size));
5477 assert(isVectorRegister(reg1));
5478 assert(isVectorRegister(reg2));
5479 assert((scale >= 2) && (scale <= 4));
5483 assert(isValidGeneralDatasize(size));
5484 assert(isGeneralRegisterOrZR(reg1));
5485 assert(isGeneralRegisterOrZR(reg2));
5486 assert((scale == 2) || (scale == 3));
5489 // Load/Store Pair reserved encodings:
5490 if (emitInsIsLoad(ins))
5492 assert(reg1 != reg2);
5494 if (insOptsIndexed(opt))
5496 assert(reg1 != reg3);
5497 assert(reg2 != reg3);
5500 reg3 = encodingSPtoZR(reg3);
5502 ssize_t mask = (1 << scale) - 1; // the mask of low bits that must be zero to encode the immediate
5505 assert(insOptsNone(opt)); // PRE/POST Index doesn't make sense with an immediate of zero
5511 if ((imm & mask) == 0)
5513 imm >>= scale; // The immediate is scaled by the size of the ld/st
5515 if ((imm >= -64) && (imm <= 63))
5521 if (fmt != IF_LS_3C)
5523 assert(!"Instruction cannot be encoded: IF_LS_3C");
5530 bool reg2IsSP = (reg2 == REG_SP);
5532 assert(isValidGeneralDatasize(size));
5533 assert(isGeneralRegister(reg3));
5535 if (setFlags || insOptsAluShift(opt)) // Can't encode SP in reg1 with setFlags or AluShift option
5537 assert(isGeneralRegisterOrZR(reg1));
5541 assert(isGeneralRegisterOrSP(reg1));
5542 reg1 = encodingSPtoZR(reg1);
5545 if (insOptsAluShift(opt)) // Can't encode SP in reg2 with AluShift option
5547 assert(isGeneralRegister(reg2));
5551 assert(isGeneralRegisterOrSP(reg2));
5552 reg2 = encodingSPtoZR(reg2);
5555 if (insOptsAnyExtend(opt))
5557 assert((imm >= 0) && (imm <= 4));
5561 else if (insOptsAluShift(opt))
5563 // imm should be non-zero and in [1..63]
5564 assert(isValidImmShift(imm, size) && (imm != 0));
5569 assert(insOptsNone(opt));
5573 // To encode the SP register as reg2 we must use the IF_DR_3C encoding
5574 // and also specify a LSL of zero (imm == 0)
5585 assert(!"Instruction cannot be encoded: Add/Sub IF_DR_3A");
5588 assert(fmt != IF_NONE);
5590 instrDesc* id = emitNewInstrCns(attr, imm);
5600 // Record the attribute for the second register in the pair
5601 id->idGCrefReg2(GCT_NONE);
5602 if (attrReg2 != EA_UNKNOWN)
5604 // Record the attribute for the second register in the pair
5605 assert((fmt == IF_LS_3B) || (fmt == IF_LS_3C));
5606 if (EA_IS_GCREF(attrReg2))
5608 id->idGCrefReg2(GCT_GCREF);
5610 else if (EA_IS_BYREF(attrReg2))
5612 id->idGCrefReg2(GCT_BYREF);
5620 /*****************************************************************************
5622 * Add an instruction referencing three registers, with an extend option
5625 void emitter::emitIns_R_R_R_Ext(instruction ins,
5630 insOpts opt, /* = INS_OPTS_NONE */
5631 int shiftAmount) /* = -1 -- unset */
5633 emitAttr size = EA_SIZE(attr);
5634 insFormat fmt = IF_NONE;
5635 bool isSIMD = false;
5638 /* Figure out the encoding format of the instruction */
5659 // Is the target a vector register?
5660 if (isVectorRegister(reg1))
5662 assert(isValidVectorLSDatasize(size));
5663 scale = NaturalScale_helper(size);
5668 assert(isValidGeneralDatasize(size));
5669 scale = (size == EA_8BYTE) ? 3 : 2;
5678 } // end switch (ins)
5680 assert(scale != -1);
5681 assert(insOptsLSExtend(opt));
5685 assert(isValidVectorLSDatasize(size));
5686 assert(isVectorRegister(reg1));
5690 assert(isValidGeneralLSDatasize(size));
5691 assert(isGeneralRegisterOrZR(reg1));
5694 assert(isGeneralRegisterOrSP(reg2));
5695 assert(isGeneralRegister(reg3));
5697 // Load/Store reserved encodings:
5698 if (insOptsIndexed(opt))
5700 assert(reg1 != reg2);
5703 if (shiftAmount == -1)
5705 shiftAmount = insOptsLSL(opt) ? scale : 0;
5707 assert((shiftAmount == scale) || (shiftAmount == 0));
5709 reg2 = encodingSPtoZR(reg2);
5712 instrDesc* id = emitNewInstr(attr);
5721 id->idReg3Scaled(shiftAmount == scale);
5727 /*****************************************************************************
5729 * Add an instruction referencing two registers and two constants.
5732 void emitter::emitIns_R_R_I_I(instruction ins, emitAttr attr, regNumber reg1, regNumber reg2, int imm1, int imm2)
5734 emitAttr size = EA_SIZE(attr);
5735 emitAttr elemsize = EA_UNKNOWN;
5736 insFormat fmt = IF_NONE;
5737 size_t immOut = 0; // composed from imm1 and imm2 and stored in the instrDesc
5739 /* Figure out the encoding format of the instruction */
5749 assert(isGeneralRegister(reg1));
5750 assert(isGeneralRegister(reg2));
5751 assert(isValidImmShift(imm1, size));
5752 assert(isValidImmShift(imm2, size));
5754 bmi.immN = (size == EA_8BYTE);
5757 immOut = bmi.immNRS;
5764 assert(isGeneralRegister(reg1));
5765 assert(isGeneralRegister(reg2));
5766 lsb = getBitWidth(size) - imm1;
5768 assert(isValidImmShift(lsb, size));
5769 assert(isValidImmShift(width, size));
5771 bmi.immN = (size == EA_8BYTE);
5774 immOut = bmi.immNRS;
5781 assert(isGeneralRegister(reg1));
5782 assert(isGeneralRegister(reg2));
5784 width = imm2 + imm1 - 1;
5785 assert(isValidImmShift(lsb, size));
5786 assert(isValidImmShift(width, size));
5788 bmi.immN = (size == EA_8BYTE);
5790 bmi.immS = imm2 + imm1 - 1;
5791 immOut = bmi.immNRS;
5797 assert(isVectorRegister(reg1));
5798 assert(isVectorRegister(reg2));
5800 assert(isValidVectorElemsize(elemsize));
5801 assert(isValidVectorIndex(EA_16BYTE, elemsize, imm1));
5802 assert(isValidVectorIndex(EA_16BYTE, elemsize, imm2));
5803 immOut = (imm1 << 4) + imm2;
5811 assert(fmt != IF_NONE);
5813 instrDesc* id = emitNewInstrSC(attr, immOut);
5825 /*****************************************************************************
5827 * Add an instruction referencing four registers.
5830 void emitter::emitIns_R_R_R_R(
5831 instruction ins, emitAttr attr, regNumber reg1, regNumber reg2, regNumber reg3, regNumber reg4)
5833 emitAttr size = EA_SIZE(attr);
5834 insFormat fmt = IF_NONE;
5836 /* Figure out the encoding format of the instruction */
5845 assert(isValidGeneralDatasize(size));
5846 assert(isGeneralRegister(reg1));
5847 assert(isGeneralRegister(reg2));
5848 assert(isGeneralRegister(reg3));
5849 assert(isGeneralRegister(reg4));
5858 assert(isValidScalarDatasize(size));
5859 assert(isVectorRegister(reg1));
5860 assert(isVectorRegister(reg2));
5861 assert(isVectorRegister(reg3));
5862 assert(isVectorRegister(reg4));
5874 assert(fmt != IF_NONE);
5876 instrDesc* id = emitNewInstr(attr);
5890 /*****************************************************************************
5892 * Add an instruction referencing a register and a condition code
5895 void emitter::emitIns_R_COND(instruction ins, emitAttr attr, regNumber reg, insCond cond)
5897 emitAttr size = EA_SIZE(attr);
5898 insFormat fmt = IF_NONE;
5902 /* Figure out the encoding format of the instruction */
5907 assert(isGeneralRegister(reg));
5916 } // end switch (ins)
5918 assert(fmt != IF_NONE);
5919 assert(isValidImmCond(cfi.immCFVal));
5921 instrDesc* id = emitNewInstrSC(attr, cfi.immCFVal);
5925 id->idInsOpt(INS_OPTS_NONE);
5933 /*****************************************************************************
5935 * Add an instruction referencing two registers and a condition code
5938 void emitter::emitIns_R_R_COND(instruction ins, emitAttr attr, regNumber reg1, regNumber reg2, insCond cond)
5940 emitAttr size = EA_SIZE(attr);
5941 insFormat fmt = IF_NONE;
5945 /* Figure out the encoding format of the instruction */
5951 assert(isGeneralRegister(reg1));
5952 assert(isGeneralRegister(reg2));
5960 } // end switch (ins)
5962 assert(fmt != IF_NONE);
5963 assert(isValidImmCond(cfi.immCFVal));
5965 instrDesc* id = emitNewInstrSC(attr, cfi.immCFVal);
5969 id->idInsOpt(INS_OPTS_NONE);
5978 /*****************************************************************************
5980 * Add an instruction referencing two registers and a condition code
5983 void emitter::emitIns_R_R_R_COND(
5984 instruction ins, emitAttr attr, regNumber reg1, regNumber reg2, regNumber reg3, insCond cond)
5986 emitAttr size = EA_SIZE(attr);
5987 insFormat fmt = IF_NONE;
5991 /* Figure out the encoding format of the instruction */
5998 assert(isGeneralRegister(reg1));
5999 assert(isGeneralRegister(reg2));
6000 assert(isGeneralRegister(reg3));
6009 } // end switch (ins)
6011 assert(fmt != IF_NONE);
6012 assert(isValidImmCond(cfi.immCFVal));
6014 instrDesc* id = emitNewInstr(attr);
6018 id->idInsOpt(INS_OPTS_NONE);
6023 id->idSmallCns(cfi.immCFVal);
6029 /*****************************************************************************
6031 * Add an instruction referencing two registers the flags and a condition code
6034 void emitter::emitIns_R_R_FLAGS_COND(
6035 instruction ins, emitAttr attr, regNumber reg1, regNumber reg2, insCflags flags, insCond cond)
6037 emitAttr size = EA_SIZE(attr);
6038 insFormat fmt = IF_NONE;
6042 /* Figure out the encoding format of the instruction */
6047 assert(isGeneralRegister(reg1));
6048 assert(isGeneralRegister(reg2));
6056 } // end switch (ins)
6058 assert(fmt != IF_NONE);
6059 assert(isValidImmCondFlags(cfi.immCFVal));
6061 instrDesc* id = emitNewInstrSC(attr, cfi.immCFVal);
6065 id->idInsOpt(INS_OPTS_NONE);
6074 /*****************************************************************************
6076 * Add an instruction referencing a register, an immediate, the flags and a condition code
6079 void emitter::emitIns_R_I_FLAGS_COND(
6080 instruction ins, emitAttr attr, regNumber reg, int imm, insCflags flags, insCond cond)
6082 emitAttr size = EA_SIZE(attr);
6083 insFormat fmt = IF_NONE;
6087 /* Figure out the encoding format of the instruction */
6092 assert(isGeneralRegister(reg));
6095 ins = insReverse(ins);
6098 if ((imm >= 0) && (imm <= 31))
6107 assert(!"Instruction cannot be encoded: ccmp/ccmn imm5");
6113 } // end switch (ins)
6115 assert(fmt != IF_NONE);
6116 assert(isValidImmCondFlagsImm5(cfi.immCFVal));
6118 instrDesc* id = emitNewInstrSC(attr, cfi.immCFVal);
6122 id->idInsOpt(INS_OPTS_NONE);
6130 /*****************************************************************************
6132 * Add a memory barrier instruction with a 'barrier' immediate
6135 void emitter::emitIns_BARR(instruction ins, insBarrier barrier)
6137 insFormat fmt = IF_NONE;
6140 /* Figure out the encoding format of the instruction */
6148 imm = (ssize_t)barrier;
6153 } // end switch (ins)
6155 assert(fmt != IF_NONE);
6157 instrDesc* id = emitNewInstrSC(EA_8BYTE, imm);
6161 id->idInsOpt(INS_OPTS_NONE);
6167 /*****************************************************************************
6169 * Add an instruction with a static data member operand. If 'size' is 0, the
6170 * instruction operates on the address of the static member instead of its
6171 * value (e.g. "push offset clsvar", rather than "push dword ptr [clsvar]").
6174 void emitter::emitIns_C(instruction ins, emitAttr attr, CORINFO_FIELD_HANDLE fldHnd, int offs)
6179 /*****************************************************************************
6181 * Add an instruction referencing stack-based local variable.
6184 void emitter::emitIns_S(instruction ins, emitAttr attr, int varx, int offs)
6189 /*****************************************************************************
6191 * Add an instruction referencing a register and a stack-based local variable.
6193 void emitter::emitIns_R_S(instruction ins, emitAttr attr, regNumber reg1, int varx, int offs)
6195 emitAttr size = EA_SIZE(attr);
6196 insFormat fmt = IF_NONE;
6202 // TODO-ARM64-CQ: use unscaled loads?
6203 /* Figure out the encoding format of the instruction */
6224 assert(isValidGeneralDatasize(size) || isValidVectorDatasize(size));
6225 scale = genLog2(EA_SIZE_IN_BYTES(size));
6229 assert(size == EA_8BYTE);
6234 NYI("emitIns_R_S"); // FP locals?
6237 } // end switch (ins)
6239 /* Figure out the variable's frame position */
6244 base = emitComp->lvaFrameAddress(varx, &FPbased);
6246 assert((scale >= 0) && (scale <= 4));
6248 regNumber reg2 = FPbased ? REG_FPBASE : REG_SPBASE;
6249 reg2 = encodingSPtoZR(reg2);
6266 fmt = IF_DI_2A; // add reg1,reg2,#disp
6270 regNumber rsvdReg = codeGen->rsGetRsvdReg();
6271 codeGen->instGen_Set_Reg_To_Imm(EA_PTRSIZE, rsvdReg, imm);
6272 fmt = IF_DR_3A; // add reg1,reg2,rsvdReg
6277 bool useRegForImm = false;
6278 ssize_t mask = (1 << scale) - 1; // the mask of low bits that must be zero to encode the immediate
6285 else if ((imm < 0) || ((imm & mask) != 0))
6287 if ((imm >= -256) && (imm <= 255))
6293 useRegForImm = true;
6298 if (((imm & mask) == 0) && ((imm >> scale) < 0x1000))
6300 imm >>= scale; // The immediate is scaled by the size of the ld/st
6306 useRegForImm = true;
6312 regNumber rsvdReg = codeGen->rsGetRsvdReg();
6313 codeGen->instGen_Set_Reg_To_Imm(EA_PTRSIZE, rsvdReg, imm);
6318 assert(fmt != IF_NONE);
6320 instrDesc* id = emitNewInstrCns(attr, imm);
6324 id->idInsOpt(INS_OPTS_NONE);
6328 id->idAddr()->iiaLclVar.initLclVarAddr(varx, offs);
6329 id->idSetIsLclVar();
6332 id->idDebugOnlyInfo()->idVarRefOffs = emitVarRefOffs;
6339 /*****************************************************************************
6341 * Add an instruction referencing two register and consectutive stack-based local variable slots.
6343 void emitter::emitIns_R_R_S_S(
6344 instruction ins, emitAttr attr1, emitAttr attr2, regNumber reg1, regNumber reg2, int varx, int offs)
6346 assert((ins == INS_ldp) || (ins == INS_ldnp));
6347 assert(EA_8BYTE == EA_SIZE(attr1));
6348 assert(EA_8BYTE == EA_SIZE(attr2));
6349 assert(isGeneralRegisterOrZR(reg1));
6350 assert(isGeneralRegisterOrZR(reg2));
6353 insFormat fmt = IF_LS_3B;
6355 const unsigned scale = 3;
6357 /* Figure out the variable's frame position */
6361 base = emitComp->lvaFrameAddress(varx, &FPbased);
6364 // TODO-ARM64-CQ: with compLocallocUsed, should we use REG_SAVED_LOCALLOC_SP instead?
6365 regNumber reg3 = FPbased ? REG_FPBASE : REG_SPBASE;
6366 reg3 = encodingSPtoZR(reg3);
6368 bool useRegForAdr = true;
6370 ssize_t mask = (1 << scale) - 1; // the mask of low bits that must be zero to encode the immediate
6373 useRegForAdr = false;
6377 if ((imm & mask) == 0)
6379 ssize_t immShift = imm >> scale; // The immediate is scaled by the size of the ld/st
6381 if ((immShift >= -64) && (immShift <= 63))
6384 useRegForAdr = false;
6392 regNumber rsvd = codeGen->rsGetRsvdReg();
6393 emitIns_R_R_Imm(INS_add, EA_PTRSIZE, rsvd, reg3, imm);
6398 assert(fmt != IF_NONE);
6400 instrDesc* id = emitNewInstrCns(attr1, imm);
6404 id->idInsOpt(INS_OPTS_NONE);
6406 // Record the attribute for the second register in the pair
6407 if (EA_IS_GCREF(attr2))
6409 id->idGCrefReg2(GCT_GCREF);
6411 else if (EA_IS_BYREF(attr2))
6413 id->idGCrefReg2(GCT_BYREF);
6417 id->idGCrefReg2(GCT_NONE);
6423 id->idAddr()->iiaLclVar.initLclVarAddr(varx, offs);
6424 id->idSetIsLclVar();
6427 id->idDebugOnlyInfo()->idVarRefOffs = emitVarRefOffs;
6434 /*****************************************************************************
6436 * Add an instruction referencing a stack-based local variable and a register
6438 void emitter::emitIns_S_R(instruction ins, emitAttr attr, regNumber reg1, int varx, int offs)
6441 emitAttr size = EA_SIZE(attr);
6442 insFormat fmt = IF_NONE;
6445 bool isVectorStore = false;
6447 // TODO-ARM64-CQ: use unscaled loads?
6448 /* Figure out the encoding format of the instruction */
6453 assert(isGeneralRegisterOrZR(reg1));
6458 assert(isGeneralRegisterOrZR(reg1));
6462 if (isGeneralRegisterOrZR(reg1))
6464 assert(isValidGeneralDatasize(size));
6465 scale = (size == EA_8BYTE) ? 3 : 2;
6469 assert(isVectorRegister(reg1));
6470 assert(isValidVectorLSDatasize(size));
6471 scale = NaturalScale_helper(size);
6472 isVectorStore = true;
6477 NYI("emitIns_S_R"); // FP locals?
6480 } // end switch (ins)
6482 /* Figure out the variable's frame position */
6486 base = emitComp->lvaFrameAddress(varx, &FPbased);
6498 // TODO-ARM64-CQ: with compLocallocUsed, should we use REG_SAVED_LOCALLOC_SP instead?
6499 regNumber reg2 = FPbased ? REG_FPBASE : REG_SPBASE;
6500 reg2 = encodingSPtoZR(reg2);
6502 bool useRegForImm = false;
6504 ssize_t mask = (1 << scale) - 1; // the mask of low bits that must be zero to encode the immediate
6509 else if ((imm < 0) || ((imm & mask) != 0))
6511 if ((imm >= -256) && (imm <= 255))
6517 useRegForImm = true;
6522 if (((imm & mask) == 0) && ((imm >> scale) < 0x1000))
6524 imm >>= scale; // The immediate is scaled by the size of the ld/st
6530 useRegForImm = true;
6536 // The reserved register is not stored in idReg3() since that field overlaps with iiaLclVar.
6537 // It is instead implicit when idSetIsLclVar() is set, with this encoding format.
6538 regNumber rsvdReg = codeGen->rsGetRsvdReg();
6539 codeGen->instGen_Set_Reg_To_Imm(EA_PTRSIZE, rsvdReg, imm);
6543 assert(fmt != IF_NONE);
6545 instrDesc* id = emitNewInstrCns(attr, imm);
6549 id->idInsOpt(INS_OPTS_NONE);
6553 id->idAddr()->iiaLclVar.initLclVarAddr(varx, offs);
6554 id->idSetIsLclVar();
6557 id->idDebugOnlyInfo()->idVarRefOffs = emitVarRefOffs;
6564 /*****************************************************************************
6566 * Add an instruction referencing consecutive stack-based local variable slots and two registers
6568 void emitter::emitIns_S_S_R_R(
6569 instruction ins, emitAttr attr1, emitAttr attr2, regNumber reg1, regNumber reg2, int varx, int offs)
6571 assert((ins == INS_stp) || (ins == INS_stnp));
6572 assert(EA_8BYTE == EA_SIZE(attr1));
6573 assert(EA_8BYTE == EA_SIZE(attr2));
6574 assert(isGeneralRegisterOrZR(reg1));
6575 assert(isGeneralRegisterOrZR(reg2));
6578 insFormat fmt = IF_LS_3B;
6580 const unsigned scale = 3;
6582 /* Figure out the variable's frame position */
6586 base = emitComp->lvaFrameAddress(varx, &FPbased);
6589 // TODO-ARM64-CQ: with compLocallocUsed, should we use REG_SAVED_LOCALLOC_SP instead?
6590 regNumber reg3 = FPbased ? REG_FPBASE : REG_SPBASE;
6591 reg3 = encodingSPtoZR(reg3);
6593 bool useRegForAdr = true;
6595 ssize_t mask = (1 << scale) - 1; // the mask of low bits that must be zero to encode the immediate
6598 useRegForAdr = false;
6602 if ((imm & mask) == 0)
6604 ssize_t immShift = imm >> scale; // The immediate is scaled by the size of the ld/st
6606 if ((immShift >= -64) && (immShift <= 63))
6609 useRegForAdr = false;
6617 regNumber rsvd = codeGen->rsGetRsvdReg();
6618 emitIns_R_R_Imm(INS_add, EA_PTRSIZE, rsvd, reg3, imm);
6623 assert(fmt != IF_NONE);
6625 instrDesc* id = emitNewInstrCns(attr1, imm);
6629 id->idInsOpt(INS_OPTS_NONE);
6631 // Record the attribute for the second register in the pair
6632 if (EA_IS_GCREF(attr2))
6634 id->idGCrefReg2(GCT_GCREF);
6636 else if (EA_IS_BYREF(attr2))
6638 id->idGCrefReg2(GCT_BYREF);
6642 id->idGCrefReg2(GCT_NONE);
6648 id->idAddr()->iiaLclVar.initLclVarAddr(varx, offs);
6649 id->idSetIsLclVar();
6652 id->idDebugOnlyInfo()->idVarRefOffs = emitVarRefOffs;
6659 /*****************************************************************************
6661 * Add an instruction referencing stack-based local variable and an immediate
6663 void emitter::emitIns_S_I(instruction ins, emitAttr attr, int varx, int offs, int val)
6668 /*****************************************************************************
6670 * Add an instruction with a register + static member operands.
6671 * Constant is stored into JIT data which is adjacent to code.
6672 * No relocation is needed. PC-relative offset will be encoded directly into instruction.
6675 void emitter::emitIns_R_C(
6676 instruction ins, emitAttr attr, regNumber reg, regNumber addrReg, CORINFO_FIELD_HANDLE fldHnd, int offs)
6679 assert(instrDesc::fitsInSmallCns(offs));
6681 emitAttr size = EA_SIZE(attr);
6682 insFormat fmt = IF_NONE;
6684 instrDescJmp* id = emitNewInstrJmp();
6689 // This is case to get address to the constant data.
6691 assert(isGeneralRegister(reg));
6692 assert(isValidGeneralDatasize(size));
6697 if (isVectorRegister(reg))
6699 assert(isValidScalarDatasize(size));
6700 // For vector (float/double) register, we should have an integer address reg to
6701 // compute long address which consists of page address and page offset.
6702 // For integer constant, this is not needed since the dest reg can be used to
6703 // compute address as well as contain the final contents.
6704 assert(isGeneralRegister(reg) || (addrReg != REG_NA));
6708 assert(isGeneralRegister(reg));
6709 assert(isValidGeneralDatasize(size));
6716 assert(fmt != IF_NONE);
6720 id->idInsOpt(INS_OPTS_NONE);
6721 id->idSmallCns(offs);
6723 id->idAddr()->iiaFieldHnd = fldHnd;
6724 id->idSetIsBound(); // We won't patch address since we will know the exact distance once JIT code and data are
6725 // allocated together.
6727 id->idReg1(reg); // destination register that will get the constant value.
6728 if (addrReg != REG_NA)
6730 id->idReg2(addrReg); // integer register to compute long address (used for vector dest when we end up with long
6733 id->idjShort = false; // Assume loading constant from long address
6735 // Keep it long if it's in cold code.
6736 id->idjKeepLong = emitComp->fgIsBlockCold(emitComp->compCurBB);
6739 if (emitComp->opts.compLongAddress)
6740 id->idjKeepLong = 1;
6743 // If it's possible to be shortened, then put it in jump list
6744 // to be revisited by emitJumpDistBind.
6745 if (!id->idjKeepLong)
6747 /* Record the jump's IG and offset within it */
6748 id->idjIG = emitCurIG;
6749 id->idjOffs = emitCurIGsize;
6751 /* Append this jump to this IG's jump list */
6752 id->idjNext = emitCurIGjmpList;
6753 emitCurIGjmpList = id;
6764 /*****************************************************************************
6766 * Add an instruction with a static member + constant.
6769 void emitter::emitIns_C_I(instruction ins, emitAttr attr, CORINFO_FIELD_HANDLE fldHnd, ssize_t offs, ssize_t val)
6774 /*****************************************************************************
6776 * Add an instruction with a static member + register operands.
6779 void emitter::emitIns_C_R(instruction ins, emitAttr attr, CORINFO_FIELD_HANDLE fldHnd, regNumber reg, int offs)
6781 assert(!"emitIns_C_R not supported for RyuJIT backend");
6784 void emitter::emitIns_R_AR(instruction ins, emitAttr attr, regNumber ireg, regNumber reg, int offs)
6786 NYI("emitIns_R_AR");
6789 // This computes address from the immediate which is relocatable.
6790 void emitter::emitIns_R_AI(instruction ins, emitAttr attr, regNumber ireg, ssize_t addr)
6792 assert(EA_IS_RELOC(attr));
6793 emitAttr size = EA_SIZE(attr);
6794 insFormat fmt = IF_DI_1E;
6795 bool needAdd = false;
6796 instrDescJmp* id = emitNewInstrJmp();
6801 // This computes page address.
6802 // page offset is needed using add.
6813 id->idInsOpt(INS_OPTS_NONE);
6815 id->idAddr()->iiaAddr = (BYTE*)addr;
6817 id->idSetIsDspReloc();
6824 // add reg, reg, imm
6827 instrDesc* id = emitAllocInstr(attr);
6828 assert(id->idIsReloc());
6832 id->idInsOpt(INS_OPTS_NONE);
6834 id->idAddr()->iiaAddr = (BYTE*)addr;
6843 void emitter::emitIns_AR_R(instruction ins, emitAttr attr, regNumber ireg, regNumber reg, int offs)
6845 NYI("emitIns_AR_R");
6848 void emitter::emitIns_R_ARR(instruction ins, emitAttr attr, regNumber ireg, regNumber reg, regNumber rg2, int disp)
6850 NYI("emitIns_R_ARR");
6853 void emitter::emitIns_ARR_R(instruction ins, emitAttr attr, regNumber ireg, regNumber reg, regNumber rg2, int disp)
6855 NYI("emitIns_R_ARR");
6858 void emitter::emitIns_R_ARX(
6859 instruction ins, emitAttr attr, regNumber ireg, regNumber reg, regNumber rg2, unsigned mul, int disp)
6861 NYI("emitIns_R_ARR");
6864 /*****************************************************************************
6866 * Record that a jump instruction uses the short encoding
6869 void emitter::emitSetShortJump(instrDescJmp* id)
6871 if (id->idjKeepLong)
6874 insFormat fmt = IF_NONE;
6875 if (emitIsCondJump(id))
6877 switch (id->idIns())
6892 else if (emitIsLoadLabel(id))
6896 else if (emitIsLoadConstant(id))
6906 id->idjShort = true;
6909 /*****************************************************************************
6911 * Add a label instruction.
6914 void emitter::emitIns_R_L(instruction ins, emitAttr attr, BasicBlock* dst, regNumber reg)
6916 assert(dst->bbFlags & BBF_JMP_TARGET);
6918 insFormat fmt = IF_NONE;
6929 instrDescJmp* id = emitNewInstrJmp();
6933 id->idjShort = false;
6934 id->idAddr()->iiaBBlabel = dst;
6936 id->idOpSize(EA_PTRSIZE);
6939 // Mark the catch return
6940 if (emitComp->compCurBB->bbJumpKind == BBJ_EHCATCHRET)
6942 id->idDebugOnlyInfo()->idCatchRet = true;
6946 id->idjKeepLong = emitComp->fgInDifferentRegions(emitComp->compCurBB, dst);
6949 if (emitComp->opts.compLongAddress)
6950 id->idjKeepLong = 1;
6953 /* Record the jump's IG and offset within it */
6955 id->idjIG = emitCurIG;
6956 id->idjOffs = emitCurIGsize;
6958 /* Append this jump to this IG's jump list */
6960 id->idjNext = emitCurIGjmpList;
6961 emitCurIGjmpList = id;
6971 /*****************************************************************************
6973 * Add a data label instruction.
6976 void emitter::emitIns_R_D(instruction ins, emitAttr attr, unsigned offs, regNumber reg)
6981 void emitter::emitIns_J_R(instruction ins, emitAttr attr, BasicBlock* dst, regNumber reg)
6983 assert((ins == INS_cbz) || (ins == INS_cbnz));
6985 assert(dst != nullptr);
6986 assert((dst->bbFlags & BBF_JMP_TARGET) != 0);
6988 insFormat fmt = IF_LARGEJMP;
6990 instrDescJmp* id = emitNewInstrJmp();
6995 id->idjShort = false;
6996 id->idOpSize(EA_SIZE(attr));
6998 id->idAddr()->iiaBBlabel = dst;
6999 id->idjKeepLong = emitComp->fgInDifferentRegions(emitComp->compCurBB, dst);
7001 /* Record the jump's IG and offset within it */
7003 id->idjIG = emitCurIG;
7004 id->idjOffs = emitCurIGsize;
7006 /* Append this jump to this IG's jump list */
7008 id->idjNext = emitCurIGjmpList;
7009 emitCurIGjmpList = id;
7019 void emitter::emitIns_J_R_I(instruction ins, emitAttr attr, BasicBlock* dst, regNumber reg, int imm)
7021 assert((ins == INS_tbz) || (ins == INS_tbnz));
7023 assert(dst != nullptr);
7024 assert((dst->bbFlags & BBF_JMP_TARGET) != 0);
7025 assert((EA_SIZE(attr) == EA_4BYTE) || (EA_SIZE(attr) == EA_8BYTE));
7026 assert(imm < ((EA_SIZE(attr) == EA_4BYTE) ? 32 : 64));
7028 insFormat fmt = IF_LARGEJMP;
7030 instrDescJmp* id = emitNewInstrJmp();
7035 id->idjShort = false;
7036 id->idSmallCns(imm);
7037 id->idOpSize(EA_SIZE(attr));
7039 id->idAddr()->iiaBBlabel = dst;
7040 id->idjKeepLong = emitComp->fgInDifferentRegions(emitComp->compCurBB, dst);
7042 /* Record the jump's IG and offset within it */
7044 id->idjIG = emitCurIG;
7045 id->idjOffs = emitCurIGsize;
7047 /* Append this jump to this IG's jump list */
7049 id->idjNext = emitCurIGjmpList;
7050 emitCurIGjmpList = id;
7060 void emitter::emitIns_J(instruction ins, BasicBlock* dst, int instrCount)
7062 insFormat fmt = IF_NONE;
7066 assert(dst->bbFlags & BBF_JMP_TARGET);
7070 assert(instrCount != 0);
7073 /* Figure out the encoding format of the instruction */
7075 bool idjShort = false;
7080 // Unconditional jump is a single form.
7099 // Assume conditional jump is long.
7108 instrDescJmp* id = emitNewInstrJmp();
7112 id->idjShort = idjShort;
7115 // Mark the finally call
7116 if (ins == INS_bl_local && emitComp->compCurBB->bbJumpKind == BBJ_CALLFINALLY)
7118 id->idDebugOnlyInfo()->idFinallyCall = true;
7124 id->idAddr()->iiaBBlabel = dst;
7126 // Skip unconditional jump that has a single form.
7127 // TODO-ARM64-NYI: enable hot/cold splittingNYI.
7128 // The target needs to be relocated.
7131 id->idjKeepLong = emitComp->fgInDifferentRegions(emitComp->compCurBB, dst);
7134 if (emitComp->opts.compLongAddress) // Force long branches
7135 id->idjKeepLong = 1;
7141 id->idAddr()->iiaSetInstrCount(instrCount);
7142 id->idjKeepLong = false;
7143 /* This jump must be short */
7144 emitSetShortJump(id);
7148 /* Record the jump's IG and offset within it */
7150 id->idjIG = emitCurIG;
7151 id->idjOffs = emitCurIGsize;
7153 /* Append this jump to this IG's jump list */
7155 id->idjNext = emitCurIGjmpList;
7156 emitCurIGjmpList = id;
7166 /*****************************************************************************
7168 * Add a call instruction (direct or indirect).
7169 * argSize<0 means that the caller will pop the arguments
7171 * The other arguments are interpreted depending on callType as shown:
7172 * Unless otherwise specified, ireg,xreg,xmul,disp should have default values.
7174 * EC_FUNC_TOKEN : addr is the method address
7175 * EC_FUNC_ADDR : addr is the absolute address of the function
7177 * If callType is one of these emitCallTypes, addr has to be NULL.
7178 * EC_INDIR_R : "call ireg".
7180 * For ARM xreg, xmul and disp are never used and should always be 0/REG_NA.
7182 * Please consult the "debugger team notification" comment in genFnProlog().
7185 void emitter::emitIns_Call(EmitCallType callType,
7186 CORINFO_METHOD_HANDLE methHnd,
7187 INDEBUG_LDISASM_COMMA(CORINFO_SIG_INFO* sigInfo) // used to report call sites to the EE
7191 emitAttr secondRetSize,
7192 VARSET_VALARG_TP ptrVars,
7193 regMaskTP gcrefRegs,
7194 regMaskTP byrefRegs,
7195 IL_OFFSETX ilOffset /* = BAD_IL_OFFSET */,
7196 regNumber ireg /* = REG_NA */,
7197 regNumber xreg /* = REG_NA */,
7198 unsigned xmul /* = 0 */,
7199 ssize_t disp /* = 0 */,
7200 bool isJump /* = false */,
7201 bool isNoGC /* = false */,
7202 bool isProfLeaveCB /* = false */)
7204 /* Sanity check the arguments depending on callType */
7206 assert(callType < EC_COUNT);
7207 assert((callType != EC_FUNC_TOKEN && callType != EC_FUNC_ADDR) ||
7208 (ireg == REG_NA && xreg == REG_NA && xmul == 0 && disp == 0));
7209 assert(callType < EC_INDIR_R || addr == NULL);
7210 assert(callType != EC_INDIR_R || (ireg < REG_COUNT && xreg == REG_NA && xmul == 0 && disp == 0));
7212 // ARM never uses these
7213 assert(xreg == REG_NA && xmul == 0 && disp == 0);
7215 // Our stack level should be always greater than the bytes of arguments we push. Just
7217 assert((unsigned)abs(argSize) <= codeGen->genStackLevel);
7222 /* This is the saved set of registers after a normal call */
7223 regMaskTP savedSet = RBM_CALLEE_SAVED;
7225 /* some special helper calls have a different saved set registers */
7229 assert(emitNoGChelper(Compiler::eeGetHelperNum(methHnd)));
7231 // Get the set of registers that this call kills and remove it from the saved set.
7232 savedSet = RBM_ALLINT & ~emitComp->compNoGCHelperCallKillSet(Compiler::eeGetHelperNum(methHnd));
7234 // In case of Leave profiler callback, we need to preserve liveness of REG_PROFILER_RET_SCRATCH
7237 savedSet |= RBM_PROFILER_RET_SCRATCH;
7242 assert(!emitNoGChelper(Compiler::eeGetHelperNum(methHnd)));
7245 /* Trim out any callee-trashed registers from the live set */
7247 gcrefRegs &= savedSet;
7248 byrefRegs &= savedSet;
7251 if (EMIT_GC_VERBOSE)
7253 printf("Call: GCvars=%s ", VarSetOps::ToString(emitComp, ptrVars));
7254 dumpConvertedVarSet(emitComp, ptrVars);
7255 printf(", gcrefRegs=");
7256 printRegMaskInt(gcrefRegs);
7257 emitDispRegSet(gcrefRegs);
7258 printf(", byrefRegs=");
7259 printRegMaskInt(byrefRegs);
7260 emitDispRegSet(byrefRegs);
7265 assert(argSize % REGSIZE_BYTES == 0);
7266 argCnt = (int)(argSize / (int)sizeof(void*));
7268 /* Managed RetVal: emit sequence point for the call */
7269 if (emitComp->opts.compDbgInfo && ilOffset != BAD_IL_OFFSET)
7271 codeGen->genIPmappingAdd(ilOffset, false);
7275 We need to allocate the appropriate instruction descriptor based
7276 on whether this is a direct/indirect call, and whether we need to
7277 record an updated set of live GC variables.
7280 if (callType >= EC_INDIR_R)
7282 /* Indirect call, virtual calls */
7284 assert(callType == EC_INDIR_R);
7286 id = emitNewInstrCallInd(argCnt, disp, ptrVars, gcrefRegs, byrefRegs, retSize, secondRetSize);
7290 /* Helper/static/nonvirtual/function calls (direct or through handle),
7291 and calls to an absolute addr. */
7293 assert(callType == EC_FUNC_TOKEN || callType == EC_FUNC_ADDR);
7295 id = emitNewInstrCallDir(argCnt, ptrVars, gcrefRegs, byrefRegs, retSize, secondRetSize);
7298 /* Update the emitter's live GC ref sets */
7300 VarSetOps::Assign(emitComp, emitThisGCrefVars, ptrVars);
7301 emitThisGCrefRegs = gcrefRegs;
7302 emitThisByrefRegs = byrefRegs;
7304 /* Set the instruction - special case jumping a function */
7306 insFormat fmt = IF_NONE;
7308 id->idSetIsNoGC(isNoGC);
7310 /* Record the address: method, indirection, or funcptr */
7312 if (callType > EC_FUNC_ADDR)
7314 /* This is an indirect call (either a virtual call or func ptr call) */
7318 case EC_INDIR_R: // the address is in a register
7320 id->idSetIsCallRegPtr();
7324 ins = INS_br_tail; // INS_br_tail Reg
7328 ins = INS_blr; // INS_blr Reg
7336 assert(xreg == REG_NA);
7340 NO_WAY("unexpected instruction");
7346 /* This is a simple direct call: "call helper/method/addr" */
7348 assert(callType == EC_FUNC_TOKEN || callType == EC_FUNC_ADDR);
7350 assert(addr != NULL);
7354 ins = INS_b_tail; // INS_b_tail imm28
7358 ins = INS_bl; // INS_bl imm28
7365 id->idAddr()->iiaAddr = (BYTE*)addr;
7367 if (callType == EC_FUNC_ADDR)
7369 id->idSetIsCallAddr();
7372 if (emitComp->opts.compReloc)
7374 id->idSetIsDspReloc();
7379 if (EMIT_GC_VERBOSE)
7381 if (id->idIsLargeCall())
7383 printf("[%02u] Rec call GC vars = %s\n", id->idDebugOnlyInfo()->idNum,
7384 VarSetOps::ToString(emitComp, ((instrDescCGCA*)id)->idcGCvars));
7388 id->idDebugOnlyInfo()->idMemCookie = (size_t)methHnd; // method token
7389 id->idDebugOnlyInfo()->idCallSig = sigInfo;
7393 if (addr != nullptr)
7395 codeGen->getDisAssembler().disSetMethod((size_t)addr, methHnd);
7397 #endif // LATE_DISASM
7403 /*****************************************************************************
7405 * Returns true if 'imm' is valid Cond encoding
7408 /*static*/ bool emitter::isValidImmCond(ssize_t imm)
7410 // range check the ssize_t value, to make sure it is a small unsigned value
7411 // and that only the bits in the cfi.cond are set
7412 if ((imm < 0) || (imm > 0xF))
7416 cfi.immCFVal = (unsigned)imm;
7418 return (cfi.cond <= INS_COND_LE); // Don't allow 14 & 15 (AL & NV).
7421 /*****************************************************************************
7423 * Returns true if 'imm' is valid Cond/Flags encoding
7426 /*static*/ bool emitter::isValidImmCondFlags(ssize_t imm)
7428 // range check the ssize_t value, to make sure it is a small unsigned value
7429 // and that only the bits in the cfi.cond or cfi.flags are set
7430 if ((imm < 0) || (imm > 0xFF))
7434 cfi.immCFVal = (unsigned)imm;
7436 return (cfi.cond <= INS_COND_LE); // Don't allow 14 & 15 (AL & NV).
7439 /*****************************************************************************
7441 * Returns true if 'imm' is valid Cond/Flags/Imm5 encoding
7444 /*static*/ bool emitter::isValidImmCondFlagsImm5(ssize_t imm)
7446 // range check the ssize_t value, to make sure it is a small unsigned value
7447 // and that only the bits in the cfi.cond, cfi.flags or cfi.imm5 are set
7448 if ((imm < 0) || (imm > 0x1FFF))
7452 cfi.immCFVal = (unsigned)imm;
7454 return (cfi.cond <= INS_COND_LE); // Don't allow 14 & 15 (AL & NV).
7457 /*****************************************************************************
7459 * Returns an encoding for the specified register used in the 'Rd' position
7462 /*static*/ emitter::code_t emitter::insEncodeReg_Rd(regNumber reg)
7464 assert(isIntegerRegister(reg));
7465 emitter::code_t ureg = (emitter::code_t)reg;
7466 assert((ureg >= 0) && (ureg <= 31));
7470 /*****************************************************************************
7472 * Returns an encoding for the specified register used in the 'Rt' position
7475 /*static*/ emitter::code_t emitter::insEncodeReg_Rt(regNumber reg)
7477 assert(isIntegerRegister(reg));
7478 emitter::code_t ureg = (emitter::code_t)reg;
7479 assert((ureg >= 0) && (ureg <= 31));
7483 /*****************************************************************************
7485 * Returns an encoding for the specified register used in the 'Rn' position
7488 /*static*/ emitter::code_t emitter::insEncodeReg_Rn(regNumber reg)
7490 assert(isIntegerRegister(reg));
7491 emitter::code_t ureg = (emitter::code_t)reg;
7492 assert((ureg >= 0) && (ureg <= 31));
7496 /*****************************************************************************
7498 * Returns an encoding for the specified register used in the 'Rm' position
7501 /*static*/ emitter::code_t emitter::insEncodeReg_Rm(regNumber reg)
7503 assert(isIntegerRegister(reg));
7504 emitter::code_t ureg = (emitter::code_t)reg;
7505 assert((ureg >= 0) && (ureg <= 31));
7509 /*****************************************************************************
7511 * Returns an encoding for the specified register used in the 'Ra' position
7514 /*static*/ emitter::code_t emitter::insEncodeReg_Ra(regNumber reg)
7516 assert(isIntegerRegister(reg));
7517 emitter::code_t ureg = (emitter::code_t)reg;
7518 assert((ureg >= 0) && (ureg <= 31));
7522 /*****************************************************************************
7524 * Returns an encoding for the specified register used in the 'Vd' position
7527 /*static*/ emitter::code_t emitter::insEncodeReg_Vd(regNumber reg)
7529 assert(emitter::isVectorRegister(reg));
7530 emitter::code_t ureg = (emitter::code_t)reg - (emitter::code_t)REG_V0;
7531 assert((ureg >= 0) && (ureg <= 31));
7535 /*****************************************************************************
7537 * Returns an encoding for the specified register used in the 'Vt' position
7540 /*static*/ emitter::code_t emitter::insEncodeReg_Vt(regNumber reg)
7542 assert(emitter::isVectorRegister(reg));
7543 emitter::code_t ureg = (emitter::code_t)reg - (emitter::code_t)REG_V0;
7544 assert((ureg >= 0) && (ureg <= 31));
7548 /*****************************************************************************
7550 * Returns an encoding for the specified register used in the 'Vn' position
7553 /*static*/ emitter::code_t emitter::insEncodeReg_Vn(regNumber reg)
7555 assert(emitter::isVectorRegister(reg));
7556 emitter::code_t ureg = (emitter::code_t)reg - (emitter::code_t)REG_V0;
7557 assert((ureg >= 0) && (ureg <= 31));
7561 /*****************************************************************************
7563 * Returns an encoding for the specified register used in the 'Vm' position
7566 /*static*/ emitter::code_t emitter::insEncodeReg_Vm(regNumber reg)
7568 assert(emitter::isVectorRegister(reg));
7569 emitter::code_t ureg = (emitter::code_t)reg - (emitter::code_t)REG_V0;
7570 assert((ureg >= 0) && (ureg <= 31));
7574 /*****************************************************************************
7576 * Returns an encoding for the specified register used in the 'Va' position
7579 /*static*/ emitter::code_t emitter::insEncodeReg_Va(regNumber reg)
7581 assert(emitter::isVectorRegister(reg));
7582 emitter::code_t ureg = (emitter::code_t)reg - (emitter::code_t)REG_V0;
7583 assert((ureg >= 0) && (ureg <= 31));
7587 /*****************************************************************************
7589 * Returns an encoding for the specified condition code.
7592 /*static*/ emitter::code_t emitter::insEncodeCond(insCond cond)
7594 emitter::code_t uimm = (emitter::code_t)cond;
7598 /*****************************************************************************
7600 * Returns an encoding for the condition code with the lowest bit inverted (marked by invert(<cond>) in the
7601 * architecture manual).
7604 /*static*/ emitter::code_t emitter::insEncodeInvertedCond(insCond cond)
7606 emitter::code_t uimm = (emitter::code_t)cond;
7607 uimm ^= 1; // invert the lowest bit
7611 /*****************************************************************************
7613 * Returns an encoding for the specified flags.
7616 /*static*/ emitter::code_t emitter::insEncodeFlags(insCflags flags)
7618 emitter::code_t uimm = (emitter::code_t)flags;
7622 /*****************************************************************************
7624 * Returns the encoding for the Shift Count bits to be used for Arm64 encodings
7627 /*static*/ emitter::code_t emitter::insEncodeShiftCount(ssize_t imm, emitAttr size)
7629 assert((imm & 0x003F) == imm);
7630 assert(((imm & 0x0020) == 0) || (size == EA_8BYTE));
7632 return (emitter::code_t)imm << 10;
7635 /*****************************************************************************
7637 * Returns the encoding to select a 64-bit datasize for an Arm64 instruction
7640 /*static*/ emitter::code_t emitter::insEncodeDatasize(emitAttr size)
7642 if (size == EA_8BYTE)
7644 return 0x80000000; // set the bit at location 31
7648 assert(size == EA_4BYTE);
7653 /*****************************************************************************
7655 * Returns the encoding to select the datasize for the general load/store Arm64 instructions
7659 /*static*/ emitter::code_t emitter::insEncodeDatasizeLS(emitter::code_t code, emitAttr size)
7661 bool exclusive = ((code & 0x35000000) == 0);
7663 if ((code & 0x00800000) && !exclusive) // Is this a sign-extending opcode? (i.e. ldrsw, ldrsh, ldrsb)
7665 if ((code & 0x80000000) == 0) // Is it a ldrsh or ldrsb and not ldrsw ?
7667 if (EA_SIZE(size) != EA_8BYTE) // Do we need to encode the 32-bit Rt size bit?
7669 return 0x00400000; // set the bit at location 22
7673 else if (code & 0x80000000) // Is this a ldr/str/ldur/stur opcode?
7675 if (EA_SIZE(size) == EA_8BYTE) // Do we need to encode the 64-bit size bit?
7677 return 0x40000000; // set the bit at location 30
7683 /*****************************************************************************
7685 * Returns the encoding to select the datasize for the vector load/store Arm64 instructions
7689 /*static*/ emitter::code_t emitter::insEncodeDatasizeVLS(emitter::code_t code, emitAttr size)
7694 if ((code & 0x20000000) == 0)
7698 if (size == EA_16BYTE)
7700 // set the operation size in bit 31
7701 result = 0x80000000;
7703 else if (size == EA_8BYTE)
7705 // set the operation size in bit 30
7706 result = 0x40000000;
7710 assert(size == EA_4BYTE);
7712 result = 0x00000000;
7719 if (size == EA_16BYTE)
7721 // The operation size in bits 31 and 30 are zero
7722 // Bit 23 specifies a 128-bit Load/Store
7723 result = 0x00800000;
7725 else if (size == EA_8BYTE)
7727 // set the operation size in bits 31 and 30
7728 result = 0xC0000000;
7730 else if (size == EA_4BYTE)
7732 // set the operation size in bit 31
7733 result = 0x80000000;
7735 else if (size == EA_2BYTE)
7737 // set the operation size in bit 30
7738 result = 0x40000000;
7742 assert(size == EA_1BYTE);
7743 // The operation size in bits 31 and 30 are zero
7744 result = 0x00000000;
7748 // Or in bit 26 to indicate a Vector register is used as 'target'
7749 result |= 0x04000000;
7754 /*****************************************************************************
7756 * Returns the encoding to select the datasize for the vector load/store Arm64 instructions
7760 /*static*/ emitter::code_t emitter::insEncodeDatasizeVPLS(emitter::code_t code, emitAttr size)
7764 if (size == EA_16BYTE)
7766 // The operation size in bits 31 and 30 are zero
7767 // Bit 23 specifies a 128-bit Load/Store
7768 result = 0x80000000;
7770 else if (size == EA_8BYTE)
7772 // set the operation size in bits 31 and 30
7773 result = 0x40000000;
7775 else if (size == EA_4BYTE)
7777 // set the operation size in bit 31
7778 result = 0x00000000;
7781 // Or in bit 26 to indicate a Vector register is used as 'target'
7782 result |= 0x04000000;
7787 /*****************************************************************************
7789 * Returns the encoding to set the size bit and the N bits for a 'bitfield' instruction
7793 /*static*/ emitter::code_t emitter::insEncodeDatasizeBF(emitter::code_t code, emitAttr size)
7795 // is bit 30 equal to 0?
7796 if ((code & 0x40000000) == 0) // is the opcode one of extr, sxtb, sxth or sxtw
7798 if (size == EA_8BYTE) // Do we need to set the sf and N bits?
7800 return 0x80400000; // set the sf-bit at location 31 and the N-bit at location 22
7803 return 0; // don't set any bits
7806 /*****************************************************************************
7808 * Returns the encoding to select the 64/128-bit datasize for an Arm64 vector instruction
7811 /*static*/ emitter::code_t emitter::insEncodeVectorsize(emitAttr size)
7813 if (size == EA_16BYTE)
7815 return 0x40000000; // set the bit at location 30
7819 assert(size == EA_8BYTE);
7824 /*****************************************************************************
7826 * Returns the encoding to select 'index' for an Arm64 vector elem instruction
7828 /*static*/ emitter::code_t emitter::insEncodeVectorIndex(emitAttr elemsize, ssize_t index)
7830 code_t bits = (code_t)index;
7831 if (elemsize == EA_1BYTE)
7836 else if (elemsize == EA_2BYTE)
7841 else if (elemsize == EA_4BYTE)
7848 assert(elemsize == EA_8BYTE);
7852 assert((bits >= 1) && (bits <= 0x1f));
7854 return (bits << 16); // bits at locations [20,19,18,17,16]
7857 /*****************************************************************************
7859 * Returns the encoding to select 'index2' for an Arm64 'ins' elem instruction
7861 /*static*/ emitter::code_t emitter::insEncodeVectorIndex2(emitAttr elemsize, ssize_t index2)
7863 code_t bits = (code_t)index2;
7864 if (elemsize == EA_1BYTE)
7868 else if (elemsize == EA_2BYTE)
7872 else if (elemsize == EA_4BYTE)
7878 assert(elemsize == EA_8BYTE);
7881 assert((bits >= 0) && (bits <= 0xf));
7883 return (bits << 11); // bits at locations [14,13,12,11]
7886 /*****************************************************************************
7888 * Returns the encoding to select the 'index' for an Arm64 'mul' by elem instruction
7890 /*static*/ emitter::code_t emitter::insEncodeVectorIndexLMH(emitAttr elemsize, ssize_t index)
7894 if (elemsize == EA_2BYTE)
7896 assert((index >= 0) && (index <= 7));
7899 bits |= (1 << 11); // set bit 11 'H'
7903 bits |= (1 << 21); // set bit 21 'L'
7907 bits |= (1 << 20); // set bit 20 'M'
7910 else if (elemsize == EA_4BYTE)
7912 assert((index >= 0) && (index <= 3));
7915 bits |= (1 << 11); // set bit 11 'H'
7919 bits |= (1 << 21); // set bit 21 'L'
7924 assert(!"Invalid 'elemsize' value");
7930 /*****************************************************************************
7932 * Returns the encoding to shift by 'shift' for an Arm64 vector or scalar instruction
7935 /*static*/ emitter::code_t emitter::insEncodeVectorShift(emitAttr size, ssize_t shift)
7937 assert(shift < getBitWidth(size));
7939 code_t imm = (code_t)(getBitWidth(size) + shift);
7944 /*****************************************************************************
7946 * Returns the encoding to select the 1/2/4/8 byte elemsize for an Arm64 vector instruction
7949 /*static*/ emitter::code_t emitter::insEncodeElemsize(emitAttr size)
7951 if (size == EA_8BYTE)
7953 return 0x00C00000; // set the bit at location 23 and 22
7955 else if (size == EA_4BYTE)
7957 return 0x00800000; // set the bit at location 23
7959 else if (size == EA_2BYTE)
7961 return 0x00400000; // set the bit at location 22
7963 assert(size == EA_1BYTE);
7967 /*****************************************************************************
7969 * Returns the encoding to select the 4/8 byte elemsize for an Arm64 float vector instruction
7972 /*static*/ emitter::code_t emitter::insEncodeFloatElemsize(emitAttr size)
7974 if (size == EA_8BYTE)
7976 return 0x00400000; // set the bit at location 22
7978 assert(size == EA_4BYTE);
7982 // Returns the encoding to select the index for an Arm64 float vector by elem instruction
7983 /*static*/ emitter::code_t emitter::insEncodeFloatIndex(emitAttr elemsize, ssize_t index)
7985 code_t result = 0x00000000;
7986 if (elemsize == EA_8BYTE)
7988 assert((index >= 0) && (index <= 1));
7991 result |= 0x00000800; // 'H' - set the bit at location 11
7996 assert(elemsize == EA_4BYTE);
7997 assert((index >= 0) && (index <= 3));
8000 result |= 0x00000800; // 'H' - set the bit at location 11
8004 result |= 0x00200000; // 'L' - set the bit at location 21
8010 /*****************************************************************************
8012 * Returns the encoding to select the fcvt operation for Arm64 instructions
8014 /*static*/ emitter::code_t emitter::insEncodeConvertOpt(insFormat fmt, insOpts conversion)
8019 case INS_OPTS_S_TO_D: // Single to Double
8020 assert(fmt == IF_DV_2J);
8021 result = 0x00008000; // type=00, opc=01
8024 case INS_OPTS_D_TO_S: // Double to Single
8025 assert(fmt == IF_DV_2J);
8026 result = 0x00400000; // type=01, opc=00
8029 case INS_OPTS_H_TO_S: // Half to Single
8030 assert(fmt == IF_DV_2J);
8031 result = 0x00C00000; // type=11, opc=00
8034 case INS_OPTS_H_TO_D: // Half to Double
8035 assert(fmt == IF_DV_2J);
8036 result = 0x00C08000; // type=11, opc=01
8039 case INS_OPTS_S_TO_H: // Single to Half
8040 assert(fmt == IF_DV_2J);
8041 result = 0x00018000; // type=00, opc=11
8044 case INS_OPTS_D_TO_H: // Double to Half
8045 assert(fmt == IF_DV_2J);
8046 result = 0x00418000; // type=01, opc=11
8049 case INS_OPTS_S_TO_4BYTE: // Single to INT32
8050 assert(fmt == IF_DV_2H);
8051 result = 0x00000000; // sf=0, type=00
8054 case INS_OPTS_D_TO_4BYTE: // Double to INT32
8055 assert(fmt == IF_DV_2H);
8056 result = 0x00400000; // sf=0, type=01
8059 case INS_OPTS_S_TO_8BYTE: // Single to INT64
8060 assert(fmt == IF_DV_2H);
8061 result = 0x80000000; // sf=1, type=00
8064 case INS_OPTS_D_TO_8BYTE: // Double to INT64
8065 assert(fmt == IF_DV_2H);
8066 result = 0x80400000; // sf=1, type=01
8069 case INS_OPTS_4BYTE_TO_S: // INT32 to Single
8070 assert(fmt == IF_DV_2I);
8071 result = 0x00000000; // sf=0, type=00
8074 case INS_OPTS_4BYTE_TO_D: // INT32 to Double
8075 assert(fmt == IF_DV_2I);
8076 result = 0x00400000; // sf=0, type=01
8079 case INS_OPTS_8BYTE_TO_S: // INT64 to Single
8080 assert(fmt == IF_DV_2I);
8081 result = 0x80000000; // sf=1, type=00
8084 case INS_OPTS_8BYTE_TO_D: // INT64 to Double
8085 assert(fmt == IF_DV_2I);
8086 result = 0x80400000; // sf=1, type=01
8090 assert(!"Invalid 'conversion' value");
8096 /*****************************************************************************
8098 * Returns the encoding to have the Rn register be updated Pre/Post indexed
8102 /*static*/ emitter::code_t emitter::insEncodeIndexedOpt(insOpts opt)
8104 assert(emitter::insOptsNone(opt) || emitter::insOptsIndexed(opt));
8106 if (emitter::insOptsIndexed(opt))
8108 if (emitter::insOptsPostIndex(opt))
8110 return 0x00000400; // set the bit at location 10
8114 assert(emitter::insOptsPreIndex(opt));
8115 return 0x00000C00; // set the bit at location 10 and 11
8120 assert(emitter::insOptsNone(opt));
8121 return 0; // bits 10 and 11 are zero
8125 /*****************************************************************************
8127 * Returns the encoding for a ldp/stp instruction to have the Rn register
8128 * be updated Pre/Post indexed or not updated
8131 /*static*/ emitter::code_t emitter::insEncodePairIndexedOpt(instruction ins, insOpts opt)
8133 assert(emitter::insOptsNone(opt) || emitter::insOptsIndexed(opt));
8135 if ((ins == INS_ldnp) || (ins == INS_stnp))
8137 assert(emitter::insOptsNone(opt));
8138 return 0; // bits 23 and 24 are zero
8142 if (emitter::insOptsIndexed(opt))
8144 if (emitter::insOptsPostIndex(opt))
8146 return 0x00800000; // set the bit at location 23
8150 assert(emitter::insOptsPreIndex(opt));
8151 return 0x01800000; // set the bit at location 24 and 23
8156 assert(emitter::insOptsNone(opt));
8157 return 0x01000000; // set the bit at location 24
8162 /*****************************************************************************
8164 * Returns the encoding to apply a Shift Type on the Rm register
8167 /*static*/ emitter::code_t emitter::insEncodeShiftType(insOpts opt)
8169 if (emitter::insOptsNone(opt))
8171 // None implies the we encode LSL (with a zero immediate)
8174 assert(emitter::insOptsAnyShift(opt));
8176 emitter::code_t option = (emitter::code_t)opt - (emitter::code_t)INS_OPTS_LSL;
8177 assert(option <= 3);
8179 return option << 22; // bits 23, 22
8182 /*****************************************************************************
8184 * Returns the encoding to apply a 12 bit left shift to the immediate
8187 /*static*/ emitter::code_t emitter::insEncodeShiftImm12(insOpts opt)
8189 if (emitter::insOptsLSL12(opt))
8191 return 0x00400000; // set the bit at location 22
8196 /*****************************************************************************
8198 * Returns the encoding to have the Rm register use an extend operation
8201 /*static*/ emitter::code_t emitter::insEncodeExtend(insOpts opt)
8203 if (emitter::insOptsNone(opt) || (opt == INS_OPTS_LSL))
8205 // None or LSL implies the we encode UXTX
8206 opt = INS_OPTS_UXTX;
8208 assert(emitter::insOptsAnyExtend(opt));
8210 emitter::code_t option = (emitter::code_t)opt - (emitter::code_t)INS_OPTS_UXTB;
8211 assert(option <= 7);
8213 return option << 13; // bits 15,14,13
8216 /*****************************************************************************
8218 * Returns the encoding to scale the Rm register by {0,1,2,3,4}
8219 * when using an extend operation
8222 /*static*/ emitter::code_t emitter::insEncodeExtendScale(ssize_t imm)
8224 assert((imm >= 0) && (imm <= 4));
8226 return (emitter::code_t)imm << 10; // bits 12,11,10
8229 /*****************************************************************************
8231 * Returns the encoding to have the Rm register be auto scaled by the ld/st size
8234 /*static*/ emitter::code_t emitter::insEncodeReg3Scale(bool isScaled)
8238 return 0x00001000; // set the bit at location 12
8246 BYTE* emitter::emitOutputLoadLabel(BYTE* dst, BYTE* srcAddr, BYTE* dstAddr, instrDescJmp* id)
8248 instruction ins = id->idIns();
8249 insFormat fmt = id->idInsFmt();
8250 regNumber dstReg = id->idReg1();
8253 // adr x, [rel addr] -- compute address: current addr(ip) + rel addr.
8254 assert(ins == INS_adr);
8255 assert(fmt == IF_DI_1E);
8256 ssize_t distVal = (ssize_t)(dstAddr - srcAddr);
8257 dst = emitOutputShortAddress(dst, ins, fmt, distVal, dstReg);
8261 // adrp x, [rel page addr] -- compute page address: current page addr + rel page addr
8262 assert(fmt == IF_LARGEADR);
8263 ssize_t relPageAddr =
8264 (((ssize_t)dstAddr & 0xFFFFFFFFFFFFF000LL) - ((ssize_t)srcAddr & 0xFFFFFFFFFFFFF000LL)) >> 12;
8265 dst = emitOutputShortAddress(dst, INS_adrp, IF_DI_1E, relPageAddr, dstReg);
8267 // add x, x, page offs -- compute address = page addr + page offs
8268 ssize_t imm12 = (ssize_t)dstAddr & 0xFFF; // 12 bits
8269 assert(isValidUimm12(imm12));
8271 emitInsCode(INS_add, IF_DI_2A); // DI_2A X0010001shiiiiii iiiiiinnnnnddddd 1100 0000 imm(i12, sh)
8272 code |= insEncodeDatasize(EA_8BYTE); // X
8273 code |= ((code_t)imm12 << 10); // iiiiiiiiiiii
8274 code |= insEncodeReg_Rd(dstReg); // ddddd
8275 code |= insEncodeReg_Rn(dstReg); // nnnnn
8276 dst += emitOutput_Instr(dst, code);
8281 /*****************************************************************************
8283 * Output a local jump or other instruction with a pc-relative immediate.
8284 * Note that this may be invoked to overwrite an existing jump instruction at 'dst'
8285 * to handle forward branch patching.
8288 BYTE* emitter::emitOutputLJ(insGroup* ig, BYTE* dst, instrDesc* i)
8290 instrDescJmp* id = (instrDescJmp*)i;
8299 // Set default ins/fmt from id.
8300 instruction ins = id->idIns();
8301 insFormat fmt = id->idInsFmt();
8303 bool loadLabel = false;
8304 bool isJump = false;
8305 bool loadConstant = false;
8322 loadConstant = true;
8331 /* Figure out the distance to the target */
8333 srcOffs = emitCurCodeOffs(dst);
8334 srcAddr = emitOffsetToPtr(srcOffs);
8336 if (id->idAddr()->iiaIsJitDataOffset())
8338 assert(loadConstant || loadLabel);
8339 int doff = id->idAddr()->iiaGetJitDataOffset();
8341 ssize_t imm = emitGetInsSC(id);
8342 assert((imm >= 0) && (imm < 0x1000)); // 0x1000 is arbitrary, currently 'imm' is always 0
8344 unsigned dataOffs = (unsigned)(doff + imm);
8345 assert(dataOffs < emitDataSize());
8346 dstAddr = emitDataOffsetToPtr(dataOffs);
8348 regNumber dstReg = id->idReg1();
8349 regNumber addrReg = dstReg; // an integer register to compute long address.
8350 emitAttr opSize = id->idOpSize();
8356 // ldr x/v, [rel addr] -- load constant from current addr(ip) + rel addr.
8357 assert(ins == INS_ldr);
8358 assert(fmt == IF_LS_1A);
8359 distVal = (ssize_t)(dstAddr - srcAddr);
8360 dst = emitOutputShortConstant(dst, ins, fmt, distVal, dstReg, opSize);
8364 // adrp x, [rel page addr] -- compute page address: current page addr + rel page addr
8365 assert(fmt == IF_LARGELDC);
8366 ssize_t relPageAddr =
8367 (((ssize_t)dstAddr & 0xFFFFFFFFFFFFF000LL) - ((ssize_t)srcAddr & 0xFFFFFFFFFFFFF000LL)) >> 12;
8368 if (isVectorRegister(dstReg))
8370 // Update addrReg with the reserved integer register
8371 // since we cannot use dstReg (vector) to load constant directly from memory.
8372 addrReg = id->idReg2();
8373 assert(isGeneralRegister(addrReg));
8377 dst = emitOutputShortAddress(dst, ins, fmt, relPageAddr, addrReg);
8379 // ldr x, [x, page offs] -- load constant from page address + page offset into integer register.
8380 ssize_t imm12 = (ssize_t)dstAddr & 0xFFF; // 12 bits
8381 assert(isValidUimm12(imm12));
8384 dst = emitOutputShortConstant(dst, ins, fmt, imm12, addrReg, opSize);
8386 // fmov v, d -- copy constant in integer register to vector register.
8387 // This is needed only for vector constant.
8388 if (addrReg != dstReg)
8390 // fmov Vd,Rn DV_2I X00111100X100111 000000nnnnnddddd 1E27 0000 Vd,Rn
8391 // (scalar, from general)
8392 assert(isVectorRegister(dstReg) && isGeneralRegister(addrReg));
8395 code_t code = emitInsCode(ins, fmt);
8397 code |= insEncodeReg_Vd(dstReg); // ddddd
8398 code |= insEncodeReg_Rn(addrReg); // nnnnn
8399 if (id->idOpSize() == EA_8BYTE)
8401 code |= 0x80400000; // X ... X
8403 dst += emitOutput_Instr(dst, code);
8410 dst = emitOutputLoadLabel(dst, srcAddr, dstAddr, id);
8416 assert(loadLabel || isJump);
8418 if (id->idAddr()->iiaHasInstrCount())
8421 int instrCount = id->idAddr()->iiaGetInstrCount();
8422 unsigned insNum = emitFindInsNum(ig, id);
8425 // Backward branches using instruction count must be within the same instruction group.
8426 assert(insNum + 1 >= (unsigned)(-instrCount));
8428 dstOffs = ig->igOffs + emitFindOffset(ig, (insNum + 1 + instrCount));
8429 dstAddr = emitOffsetToPtr(dstOffs);
8433 dstOffs = id->idAddr()->iiaIGlabel->igOffs;
8434 dstAddr = emitOffsetToPtr(dstOffs);
8437 distVal = (ssize_t)(dstAddr - srcAddr);
8439 if (dstOffs <= srcOffs)
8442 /* This is a backward jump - distance is known at this point */
8444 if (id->idDebugOnlyInfo()->idNum == (unsigned)INTERESTING_JUMP_NUM || INTERESTING_JUMP_NUM == 0)
8446 size_t blkOffs = id->idjIG->igOffs;
8448 if (INTERESTING_JUMP_NUM == 0)
8449 printf("[3] Jump %u:\n", id->idDebugOnlyInfo()->idNum);
8450 printf("[3] Jump block is at %08X - %02X = %08X\n", blkOffs, emitOffsAdj, blkOffs - emitOffsAdj);
8451 printf("[3] Jump is at %08X - %02X = %08X\n", srcOffs, emitOffsAdj, srcOffs - emitOffsAdj);
8452 printf("[3] Label block is at %08X - %02X = %08X\n", dstOffs, emitOffsAdj, dstOffs - emitOffsAdj);
8458 /* This is a forward jump - distance will be an upper limit */
8460 emitFwdJumps = true;
8462 /* The target offset will be closer by at least 'emitOffsAdj', but only if this
8463 jump doesn't cross the hot-cold boundary. */
8465 if (!emitJumpCrossHotColdBoundary(srcOffs, dstOffs))
8467 dstOffs -= emitOffsAdj;
8468 distVal -= emitOffsAdj;
8471 /* Record the location of the jump for later patching */
8473 id->idjOffs = dstOffs;
8475 /* Are we overflowing the id->idjOffs bitfield? */
8476 if (id->idjOffs != dstOffs)
8477 IMPL_LIMITATION("Method is too large");
8480 if (id->idDebugOnlyInfo()->idNum == (unsigned)INTERESTING_JUMP_NUM || INTERESTING_JUMP_NUM == 0)
8482 size_t blkOffs = id->idjIG->igOffs;
8484 if (INTERESTING_JUMP_NUM == 0)
8485 printf("[4] Jump %u:\n", id->idDebugOnlyInfo()->idNum);
8486 printf("[4] Jump block is at %08X\n", blkOffs);
8487 printf("[4] Jump is at %08X\n", srcOffs);
8488 printf("[4] Label block is at %08X - %02X = %08X\n", dstOffs + emitOffsAdj, emitOffsAdj, dstOffs);
8494 if (0 && emitComp->verbose)
8497 int distValSize = id->idjShort ? 4 : 8;
8498 printf("; %s jump [%08X/%03u] from %0*X to %0*X: dist = %08XH\n", (dstOffs <= srcOffs) ? "Fwd" : "Bwd",
8499 dspPtr(id), id->idDebugOnlyInfo()->idNum, distValSize, srcOffs + sz, distValSize, dstOffs, distVal);
8503 /* For forward jumps, record the address of the distance value */
8504 id->idjTemp.idjAddr = (distVal > 0) ? dst : NULL;
8506 if (emitJumpCrossHotColdBoundary(srcOffs, dstOffs))
8508 assert(!id->idjShort);
8509 NYI_ARM64("Relocation Support for long address");
8512 assert(insOptsNone(id->idInsOpt()));
8518 // Short conditional/unconditional jump
8519 assert(!id->idjKeepLong);
8520 assert(emitJumpCrossHotColdBoundary(srcOffs, dstOffs) == false);
8521 assert((fmt == IF_BI_0A) || (fmt == IF_BI_0B) || (fmt == IF_BI_1A) || (fmt == IF_BI_1B));
8525 // Long conditional jump
8526 assert(fmt == IF_LARGEJMP);
8527 // This is a pseudo-instruction format representing a large conditional branch, to allow
8528 // us to get a greater branch target range than we can get by using a straightforward conditional
8529 // branch. It is encoded as a short conditional branch that branches around a long unconditional
8532 // Conceptually, we have:
8536 // The code we emit is:
8538 // b<!cond> L_not // 4 bytes. Note that we reverse the condition.
8539 // b L_target // 4 bytes
8542 // Note that we don't actually insert any blocks: we simply encode "b <!cond> L_not" as a branch with
8543 // the correct offset. Note also that this works for both integer and floating-point conditions, because
8544 // the condition inversion takes ordered/unordered into account, preserving NaN behavior. For example,
8545 // "GT" (greater than) is inverted to "LE" (less than, equal, or unordered).
8547 instruction reverseIns;
8548 insFormat reverseFmt;
8553 reverseIns = INS_cbnz;
8554 reverseFmt = IF_BI_1A;
8557 reverseIns = INS_cbz;
8558 reverseFmt = IF_BI_1A;
8561 reverseIns = INS_tbnz;
8562 reverseFmt = IF_BI_1B;
8565 reverseIns = INS_tbz;
8566 reverseFmt = IF_BI_1B;
8569 reverseIns = emitJumpKindToIns(emitReverseJumpKind(emitInsToJumpKind(ins)));
8570 reverseFmt = IF_BI_0B;
8574 emitOutputShortBranch(dst,
8575 reverseIns, // reverse the conditional instruction
8577 8, /* 8 bytes from start of this large conditional pseudo-instruction to L_not. */
8580 // Now, pretend we've got a normal unconditional branch, and fall through to the code to emit that.
8584 // The distVal was computed based on the beginning of the pseudo-instruction,
8585 // So subtract the size of the conditional branch so that it is relative to the
8586 // unconditional branch.
8590 dst = emitOutputShortBranch(dst, ins, fmt, distVal, id);
8594 dst = emitOutputLoadLabel(dst, srcAddr, dstAddr, id);
8600 /*****************************************************************************
8602 * Output a short branch instruction.
8604 BYTE* emitter::emitOutputShortBranch(BYTE* dst, instruction ins, insFormat fmt, ssize_t distVal, instrDescJmp* id)
8606 code_t code = emitInsCode(ins, fmt);
8608 ssize_t loBits = (distVal & 3);
8609 noway_assert(loBits == 0);
8610 distVal >>= 2; // branch offset encodings are scaled by 4.
8612 if (fmt == IF_BI_0A)
8614 // INS_b or INS_bl_local
8615 noway_assert(isValidSimm26(distVal));
8616 distVal &= 0x3FFFFFFLL;
8619 else if (fmt == IF_BI_0B) // BI_0B 01010100iiiiiiii iiiiiiiiiiiXXXXX simm19:00
8621 // INS_beq, INS_bne, etc...
8622 noway_assert(isValidSimm19(distVal));
8623 distVal &= 0x7FFFFLL;
8624 code |= distVal << 5;
8626 else if (fmt == IF_BI_1A) // BI_1A X.......iiiiiiii iiiiiiiiiiittttt Rt simm19:00
8628 // INS_cbz or INS_cbnz
8629 assert(id != nullptr);
8630 code |= insEncodeDatasize(id->idOpSize()); // X
8631 code |= insEncodeReg_Rt(id->idReg1()); // ttttt
8633 noway_assert(isValidSimm19(distVal));
8634 distVal &= 0x7FFFFLL; // 19 bits
8635 code |= distVal << 5;
8637 else if (fmt == IF_BI_1B) // BI_1B B.......bbbbbiii iiiiiiiiiiittttt Rt imm6, simm14:00
8639 // INS_tbz or INS_tbnz
8640 assert(id != nullptr);
8641 ssize_t imm = emitGetInsSC(id);
8642 assert(isValidImmShift(imm, id->idOpSize()));
8644 if (imm & 0x20) // test bit 32-63 ?
8646 code |= 0x80000000; // B
8648 code |= ((imm & 0x1F) << 19); // bbbbb
8649 code |= insEncodeReg_Rt(id->idReg1()); // ttttt
8651 noway_assert(isValidSimm14(distVal));
8652 distVal &= 0x3FFFLL; // 14 bits
8653 code |= distVal << 5;
8657 assert(!"Unknown fmt for emitOutputShortBranch");
8660 dst += emitOutput_Instr(dst, code);
8665 /*****************************************************************************
8667 * Output a short address instruction.
8669 BYTE* emitter::emitOutputShortAddress(BYTE* dst, instruction ins, insFormat fmt, ssize_t distVal, regNumber reg)
8671 ssize_t loBits = (distVal & 3);
8674 code_t code = emitInsCode(ins, fmt);
8675 if (fmt == IF_DI_1E) // DI_1E .ii.....iiiiiiii iiiiiiiiiiiddddd Rd simm21
8677 // INS_adr or INS_adrp
8678 code |= insEncodeReg_Rd(reg); // ddddd
8680 noway_assert(isValidSimm19(distVal));
8681 distVal &= 0x7FFFFLL; // 19 bits
8682 code |= distVal << 5;
8683 code |= loBits << 29; // 2 bits
8687 assert(!"Unknown fmt for emitOutputShortAddress");
8690 dst += emitOutput_Instr(dst, code);
8695 /*****************************************************************************
8697 * Output a short constant instruction.
8699 BYTE* emitter::emitOutputShortConstant(
8700 BYTE* dst, instruction ins, insFormat fmt, ssize_t imm, regNumber reg, emitAttr opSize)
8702 code_t code = emitInsCode(ins, fmt);
8704 if (fmt == IF_LS_1A)
8706 // LS_1A XX...V..iiiiiiii iiiiiiiiiiittttt Rt simm21
8707 // INS_ldr or INS_ldrsw (PC-Relative)
8709 ssize_t loBits = (imm & 3);
8710 noway_assert(loBits == 0);
8711 ssize_t distVal = imm >>= 2; // load offset encodings are scaled by 4.
8713 noway_assert(isValidSimm19(distVal));
8715 // Is the target a vector register?
8716 if (isVectorRegister(reg))
8718 code |= insEncodeDatasizeVLS(code, opSize); // XX V
8719 code |= insEncodeReg_Vt(reg); // ttttt
8723 assert(isGeneralRegister(reg));
8724 // insEncodeDatasizeLS is not quite right for this case.
8725 // So just specialize it.
8726 if ((ins == INS_ldr) && (opSize == EA_8BYTE))
8728 // set the operation size in bit 30
8732 code |= insEncodeReg_Rt(reg); // ttttt
8735 distVal &= 0x7FFFFLL; // 19 bits
8736 code |= distVal << 5;
8738 else if (fmt == IF_LS_2B)
8740 // ldr Rt,[Xn+pimm12] LS_2B 1X11100101iiiiii iiiiiinnnnnttttt B940 0000 imm(0-4095<<{2,3})
8741 // INS_ldr or INS_ldrsw (PC-Relative)
8742 noway_assert(isValidUimm12(imm));
8743 assert(isGeneralRegister(reg));
8745 if (opSize == EA_8BYTE)
8747 // insEncodeDatasizeLS is not quite right for this case.
8748 // So just specialize it.
8751 // set the operation size in bit 30
8754 // Low 3 bits should be 0 -- 8 byte JIT data should be aligned on 8 byte.
8755 assert((imm & 7) == 0);
8760 assert(opSize == EA_4BYTE);
8761 // Low 2 bits should be 0 -- 4 byte aligned data.
8762 assert((imm & 3) == 0);
8766 code |= insEncodeReg_Rt(reg); // ttttt
8767 code |= insEncodeReg_Rn(reg); // nnnnn
8772 assert(!"Unknown fmt for emitOutputShortConstant");
8775 dst += emitOutput_Instr(dst, code);
8779 /*****************************************************************************
8781 * Output a call instruction.
8784 unsigned emitter::emitOutputCall(insGroup* ig, BYTE* dst, instrDesc* id, code_t code)
8786 const unsigned char callInstrSize = sizeof(code_t); // 4 bytes
8787 regMaskTP gcrefRegs;
8788 regMaskTP byrefRegs;
8790 VARSET_TP GCvars(VarSetOps::UninitVal());
8792 // Is this a "fat" call descriptor?
8793 if (id->idIsLargeCall())
8795 instrDescCGCA* idCall = (instrDescCGCA*)id;
8796 gcrefRegs = idCall->idcGcrefRegs;
8797 byrefRegs = idCall->idcByrefRegs;
8798 VarSetOps::Assign(emitComp, GCvars, idCall->idcGCvars);
8802 assert(!id->idIsLargeDsp());
8803 assert(!id->idIsLargeCns());
8805 gcrefRegs = emitDecodeCallGCregs(id);
8807 VarSetOps::AssignNoCopy(emitComp, GCvars, VarSetOps::MakeEmpty(emitComp));
8810 /* We update the GC info before the call as the variables cannot be
8811 used by the call. Killing variables before the call helps with
8812 boundary conditions if the call is CORINFO_HELP_THROW - see bug 50029.
8813 If we ever track aliased variables (which could be used by the
8814 call), we would have to keep them alive past the call. */
8816 emitUpdateLiveGCvars(GCvars, dst);
8818 // Now output the call instruction and update the 'dst' pointer
8820 unsigned outputInstrSize = emitOutput_Instr(dst, code);
8821 dst += outputInstrSize;
8823 // All call instructions are 4-byte in size on ARM64
8825 assert(outputInstrSize == callInstrSize);
8827 // If the method returns a GC ref, mark INTRET (R0) appropriately.
8828 if (id->idGCref() == GCT_GCREF)
8830 gcrefRegs |= RBM_INTRET;
8832 else if (id->idGCref() == GCT_BYREF)
8834 byrefRegs |= RBM_INTRET;
8837 // If is a multi-register return method is called, mark INTRET_1 (X1) appropriately
8838 if (id->idIsLargeCall())
8840 instrDescCGCA* idCall = (instrDescCGCA*)id;
8841 if (idCall->idSecondGCref() == GCT_GCREF)
8843 gcrefRegs |= RBM_INTRET_1;
8845 else if (idCall->idSecondGCref() == GCT_BYREF)
8847 byrefRegs |= RBM_INTRET_1;
8851 // If the GC register set has changed, report the new set.
8852 if (gcrefRegs != emitThisGCrefRegs)
8854 emitUpdateLiveGCregs(GCT_GCREF, gcrefRegs, dst);
8856 // If the Byref register set has changed, report the new set.
8857 if (byrefRegs != emitThisByrefRegs)
8859 emitUpdateLiveGCregs(GCT_BYREF, byrefRegs, dst);
8862 // Some helper calls may be marked as not requiring GC info to be recorded.
8863 if ((!id->idIsNoGC()))
8865 // On ARM64, as on AMD64, we don't change the stack pointer to push/pop args.
8866 // So we're not really doing a "stack pop" here (note that "args" is 0), but we use this mechanism
8867 // to record the call for GC info purposes. (It might be best to use an alternate call,
8868 // and protect "emitStackPop" under the EMIT_TRACK_STACK_DEPTH preprocessor variable.)
8869 emitStackPop(dst, /*isCall*/ true, callInstrSize, /*args*/ 0);
8871 // Do we need to record a call location for GC purposes?
8873 if (!emitFullGCinfo)
8875 emitRecordGCcall(dst, callInstrSize);
8878 return callInstrSize;
8881 /*****************************************************************************
8883 * Emit a 32-bit Arm64 instruction
8886 /*static*/ unsigned emitter::emitOutput_Instr(BYTE* dst, code_t code)
8888 assert(sizeof(code_t) == 4);
8889 *((code_t*)dst) = code;
8891 return sizeof(code_t);
8894 /*****************************************************************************
8896 * Append the machine code corresponding to the given instruction descriptor
8897 * to the code block at '*dp'; the base of the code block is 'bp', and 'ig'
8898 * is the instruction group that contains the instruction. Updates '*dp' to
8899 * point past the generated code, and returns the size of the instruction
8900 * descriptor in bytes.
8903 size_t emitter::emitOutputInstr(insGroup* ig, instrDesc* id, BYTE** dp)
8908 size_t sz = emitGetInstrDescSize(id); // TODO-ARM64-Cleanup: on ARM, this is set in each case. why?
8909 instruction ins = id->idIns();
8910 insFormat fmt = id->idInsFmt();
8911 emitAttr size = id->idOpSize();
8912 unsigned char callInstrSize = 0;
8917 bool dspOffs = emitComp->opts.dspGCtbls;
8919 bool dspOffs = !emitComp->opts.disDiffable;
8923 assert(REG_NA == (int)REG_NA);
8925 VARSET_TP GCvars(VarSetOps::UninitVal());
8927 /* What instruction format have we got? */
8942 case IF_BI_0A: // BI_0A ......iiiiiiiiii iiiiiiiiiiiiiiii simm26:00
8943 case IF_BI_0B: // BI_0B ......iiiiiiiiii iiiiiiiiiii..... simm19:00
8945 assert(id->idGCref() == GCT_NONE);
8946 assert(id->idIsBound());
8947 dst = emitOutputLJ(ig, dst, id);
8948 sz = sizeof(instrDescJmp);
8951 case IF_BI_0C: // BI_0C ......iiiiiiiiii iiiiiiiiiiiiiiii simm26:00
8952 code = emitInsCode(ins, fmt);
8953 sz = id->idIsLargeCall() ? sizeof(instrDescCGCA) : sizeof(instrDesc);
8954 dst += emitOutputCall(ig, dst, id, code);
8955 // Always call RecordRelocation so that we wire in a JumpStub when we don't reach
8956 emitRecordRelocation(odst, id->idAddr()->iiaAddr, IMAGE_REL_ARM64_BRANCH26);
8959 case IF_BI_1A: // BI_1A ......iiiiiiiiii iiiiiiiiiiittttt Rt simm19:00
8960 assert(insOptsNone(id->idInsOpt()));
8961 assert(id->idIsBound());
8963 dst = emitOutputLJ(ig, dst, id);
8964 sz = sizeof(instrDescJmp);
8967 case IF_BI_1B: // BI_1B B.......bbbbbiii iiiiiiiiiiittttt Rt imm6, simm14:00
8968 assert(insOptsNone(id->idInsOpt()));
8969 assert(id->idIsBound());
8971 dst = emitOutputLJ(ig, dst, id);
8972 sz = sizeof(instrDescJmp);
8975 case IF_BR_1A: // BR_1A ................ ......nnnnn..... Rn
8976 assert(insOptsNone(id->idInsOpt()));
8977 assert((ins == INS_ret) || (ins == INS_br));
8978 code = emitInsCode(ins, fmt);
8979 code |= insEncodeReg_Rn(id->idReg1()); // nnnnn
8981 dst += emitOutput_Instr(dst, code);
8984 case IF_BR_1B: // BR_1B ................ ......nnnnn..... Rn
8985 assert(insOptsNone(id->idInsOpt()));
8986 assert((ins == INS_br_tail) || (ins == INS_blr));
8987 code = emitInsCode(ins, fmt);
8988 code |= insEncodeReg_Rn(id->idReg3()); // nnnnn
8990 sz = id->idIsLargeCall() ? sizeof(instrDescCGCA) : sizeof(instrDesc);
8991 dst += emitOutputCall(ig, dst, id, code);
8994 case IF_LS_1A: // LS_1A XX...V..iiiiiiii iiiiiiiiiiittttt Rt PC imm(1MB)
8996 assert(insOptsNone(id->idInsOpt()));
8997 assert(id->idIsBound());
8999 dst = emitOutputLJ(ig, dst, id);
9000 sz = sizeof(instrDescJmp);
9003 case IF_LS_2A: // LS_2A .X.......X...... ......nnnnnttttt Rt Rn
9004 assert(insOptsNone(id->idInsOpt()));
9005 code = emitInsCode(ins, fmt);
9006 // Is the target a vector register?
9007 if (isVectorRegister(id->idReg1()))
9009 code &= 0x3FFFFFFF; // clear the size bits
9010 code |= insEncodeDatasizeVLS(code, id->idOpSize()); // XX
9011 code |= insEncodeReg_Vt(id->idReg1()); // ttttt
9015 code |= insEncodeDatasizeLS(code, id->idOpSize()); // .X.......X
9016 code |= insEncodeReg_Rt(id->idReg1()); // ttttt
9018 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9019 dst += emitOutput_Instr(dst, code);
9022 case IF_LS_2B: // LS_2B .X.......Xiiiiii iiiiiinnnnnttttt Rt Rn imm(0-4095)
9023 assert(insOptsNone(id->idInsOpt()));
9024 imm = emitGetInsSC(id);
9025 assert(isValidUimm12(imm));
9026 code = emitInsCode(ins, fmt);
9027 // Is the target a vector register?
9028 if (isVectorRegister(id->idReg1()))
9030 code &= 0x3FFFFFFF; // clear the size bits
9031 code |= insEncodeDatasizeVLS(code, id->idOpSize()); // XX
9032 code |= insEncodeReg_Vt(id->idReg1()); // ttttt
9036 code |= insEncodeDatasizeLS(code, id->idOpSize()); // .X.......X
9037 code |= insEncodeReg_Rt(id->idReg1()); // ttttt
9039 code |= ((code_t)imm << 10); // iiiiiiiiiiii
9040 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9041 dst += emitOutput_Instr(dst, code);
9044 case IF_LS_2C: // LS_2C .X.......X.iiiii iiiiPPnnnnnttttt Rt Rn imm(-256..+255) no/pre/post inc
9045 assert(insOptsNone(id->idInsOpt()) || insOptsIndexed(id->idInsOpt()));
9046 imm = emitGetInsSC(id);
9047 assert((imm >= -256) && (imm <= 255)); // signed 9 bits
9048 imm &= 0x1ff; // force into unsigned 9 bit representation
9049 code = emitInsCode(ins, fmt);
9050 // Is the target a vector register?
9051 if (isVectorRegister(id->idReg1()))
9053 code &= 0x3FFFFFFF; // clear the size bits
9054 code |= insEncodeDatasizeVLS(code, id->idOpSize()); // XX
9055 code |= insEncodeReg_Vt(id->idReg1()); // ttttt
9059 code |= insEncodeDatasizeLS(code, id->idOpSize()); // .X.......X
9060 code |= insEncodeReg_Rt(id->idReg1()); // ttttt
9062 code |= insEncodeIndexedOpt(id->idInsOpt()); // PP
9063 code |= ((code_t)imm << 12); // iiiiiiiii
9064 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9065 dst += emitOutput_Instr(dst, code);
9068 case IF_LS_3A: // LS_3A .X.......X.mmmmm oooS..nnnnnttttt Rt Rn Rm ext(Rm) LSL {}
9069 assert(insOptsLSExtend(id->idInsOpt()));
9070 code = emitInsCode(ins, fmt);
9071 // Is the target a vector register?
9072 if (isVectorRegister(id->idReg1()))
9074 code &= 0x3FFFFFFF; // clear the size bits
9075 code |= insEncodeDatasizeVLS(code, id->idOpSize()); // XX
9076 code |= insEncodeReg_Vt(id->idReg1()); // ttttt
9080 code |= insEncodeDatasizeLS(code, id->idOpSize()); // .X.......X
9081 code |= insEncodeReg_Rt(id->idReg1()); // ttttt
9083 code |= insEncodeExtend(id->idInsOpt()); // ooo
9084 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9085 if (id->idIsLclVar())
9087 code |= insEncodeReg_Rm(codeGen->rsGetRsvdReg()); // mmmmm
9091 code |= insEncodeReg3Scale(id->idReg3Scaled()); // S
9092 code |= insEncodeReg_Rm(id->idReg3()); // mmmmm
9094 dst += emitOutput_Instr(dst, code);
9097 case IF_LS_3B: // LS_3B X............... .aaaaannnnnddddd Rd Ra Rn
9098 assert(insOptsNone(id->idInsOpt()));
9099 code = emitInsCode(ins, fmt);
9100 // Is the target a vector register?
9101 if (isVectorRegister(id->idReg1()))
9103 code &= 0x3FFFFFFF; // clear the size bits
9104 code |= insEncodeDatasizeVPLS(code, id->idOpSize()); // XX
9105 code |= insEncodeReg_Vt(id->idReg1()); // ttttt
9106 code |= insEncodeReg_Va(id->idReg2()); // aaaaa
9110 code |= insEncodeDatasize(id->idOpSize()); // X
9111 code |= insEncodeReg_Rt(id->idReg1()); // ttttt
9112 code |= insEncodeReg_Ra(id->idReg2()); // aaaaa
9114 code |= insEncodeReg_Rn(id->idReg3()); // nnnnn
9115 dst += emitOutput_Instr(dst, code);
9118 case IF_LS_3C: // LS_3C X......PP.iiiiii iaaaaannnnnddddd Rd Ra Rn imm(im7,sh)
9119 assert(insOptsNone(id->idInsOpt()) || insOptsIndexed(id->idInsOpt()));
9120 imm = emitGetInsSC(id);
9121 assert((imm >= -64) && (imm <= 63)); // signed 7 bits
9122 imm &= 0x7f; // force into unsigned 7 bit representation
9123 code = emitInsCode(ins, fmt);
9124 // Is the target a vector register?
9125 if (isVectorRegister(id->idReg1()))
9127 code &= 0x3FFFFFFF; // clear the size bits
9128 code |= insEncodeDatasizeVPLS(code, id->idOpSize()); // XX
9129 code |= insEncodeReg_Vt(id->idReg1()); // ttttt
9130 code |= insEncodeReg_Va(id->idReg2()); // aaaaa
9134 code |= insEncodeDatasize(id->idOpSize()); // X
9135 code |= insEncodeReg_Rt(id->idReg1()); // ttttt
9136 code |= insEncodeReg_Ra(id->idReg2()); // aaaaa
9138 code |= insEncodePairIndexedOpt(ins, id->idInsOpt()); // PP
9139 code |= ((code_t)imm << 15); // iiiiiiiii
9140 code |= insEncodeReg_Rn(id->idReg3()); // nnnnn
9141 dst += emitOutput_Instr(dst, code);
9144 case IF_LS_3D: // LS_3D .X.......X.mmmmm ......nnnnnttttt Wm Rt Rn
9145 code = emitInsCode(ins, fmt);
9146 // Arm64 store exclusive unpredictable cases
9147 assert(id->idReg1() != id->idReg2());
9148 assert(id->idReg1() != id->idReg3());
9149 code |= insEncodeDatasizeLS(code, id->idOpSize()); // X
9150 code |= insEncodeReg_Rm(id->idReg1()); // mmmmm
9151 code |= insEncodeReg_Rt(id->idReg2()); // ttttt
9152 code |= insEncodeReg_Rn(id->idReg3()); // nnnnn
9153 dst += emitOutput_Instr(dst, code);
9156 case IF_DI_1A: // DI_1A X.......shiiiiii iiiiiinnnnn..... Rn imm(i12,sh)
9157 assert(insOptsNone(id->idInsOpt()) || insOptsLSL12(id->idInsOpt()));
9158 imm = emitGetInsSC(id);
9159 assert(isValidUimm12(imm));
9160 code = emitInsCode(ins, fmt);
9161 code |= insEncodeDatasize(id->idOpSize()); // X
9162 code |= insEncodeShiftImm12(id->idInsOpt()); // sh
9163 code |= ((code_t)imm << 10); // iiiiiiiiiiii
9164 code |= insEncodeReg_Rn(id->idReg1()); // nnnnn
9165 dst += emitOutput_Instr(dst, code);
9168 case IF_DI_1B: // DI_1B X........hwiiiii iiiiiiiiiiiddddd Rd imm(i16,hw)
9169 imm = emitGetInsSC(id);
9170 assert(isValidImmHWVal(imm, id->idOpSize()));
9171 code = emitInsCode(ins, fmt);
9172 code |= insEncodeDatasize(id->idOpSize()); // X
9173 code |= ((code_t)imm << 5); // hwiiiii iiiiiiiiiii
9174 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9175 dst += emitOutput_Instr(dst, code);
9178 case IF_DI_1C: // DI_1C X........Nrrrrrr ssssssnnnnn..... Rn imm(N,r,s)
9179 imm = emitGetInsSC(id);
9180 assert(isValidImmNRS(imm, id->idOpSize()));
9181 code = emitInsCode(ins, fmt);
9182 code |= ((code_t)imm << 10); // Nrrrrrrssssss
9183 code |= insEncodeDatasize(id->idOpSize()); // X
9184 code |= insEncodeReg_Rn(id->idReg1()); // nnnnn
9185 dst += emitOutput_Instr(dst, code);
9188 case IF_DI_1D: // DI_1D X........Nrrrrrr ssssss.....ddddd Rd imm(N,r,s)
9189 imm = emitGetInsSC(id);
9190 assert(isValidImmNRS(imm, id->idOpSize()));
9191 code = emitInsCode(ins, fmt);
9192 code |= ((code_t)imm << 10); // Nrrrrrrssssss
9193 code |= insEncodeDatasize(id->idOpSize()); // X
9194 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9195 dst += emitOutput_Instr(dst, code);
9198 case IF_DI_1E: // DI_1E .ii.....iiiiiiii iiiiiiiiiiiddddd Rd simm21
9200 assert(insOptsNone(id->idInsOpt()));
9201 if (id->idIsReloc())
9203 code = emitInsCode(ins, fmt);
9204 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9205 dst += emitOutput_Instr(dst, code);
9206 emitRecordRelocation(odst, id->idAddr()->iiaAddr, IMAGE_REL_ARM64_PAGEBASE_REL21);
9210 // Local jmp/load case which does not need a relocation.
9211 assert(id->idIsBound());
9212 dst = emitOutputLJ(ig, dst, id);
9214 sz = sizeof(instrDescJmp);
9217 case IF_DI_1F: // DI_1F X..........iiiii cccc..nnnnn.nzcv Rn imm5 nzcv cond
9218 imm = emitGetInsSC(id);
9219 assert(isValidImmCondFlagsImm5(imm));
9222 cfi.immCFVal = (unsigned)imm;
9223 code = emitInsCode(ins, fmt);
9224 code |= insEncodeDatasize(id->idOpSize()); // X
9225 code |= insEncodeReg_Rn(id->idReg1()); // nnnnn
9226 code |= ((code_t)cfi.imm5 << 16); // iiiii
9227 code |= insEncodeFlags(cfi.flags); // nzcv
9228 code |= insEncodeCond(cfi.cond); // cccc
9229 dst += emitOutput_Instr(dst, code);
9233 case IF_DI_2A: // DI_2A X.......shiiiiii iiiiiinnnnnddddd Rd Rn imm(i12,sh)
9234 assert(insOptsNone(id->idInsOpt()) || insOptsLSL12(id->idInsOpt()));
9235 imm = emitGetInsSC(id);
9236 assert(isValidUimm12(imm));
9237 code = emitInsCode(ins, fmt);
9238 code |= insEncodeDatasize(id->idOpSize()); // X
9239 code |= insEncodeShiftImm12(id->idInsOpt()); // sh
9240 code |= ((code_t)imm << 10); // iiiiiiiiiiii
9241 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9242 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9243 dst += emitOutput_Instr(dst, code);
9245 if (id->idIsReloc())
9247 assert(sz == sizeof(instrDesc));
9248 assert(id->idAddr()->iiaAddr != nullptr);
9249 emitRecordRelocation(odst, id->idAddr()->iiaAddr, IMAGE_REL_ARM64_PAGEOFFSET_12A);
9253 case IF_DI_2B: // DI_2B X.........Xnnnnn ssssssnnnnnddddd Rd Rn imm(0-63)
9254 code = emitInsCode(ins, fmt);
9255 imm = emitGetInsSC(id);
9256 assert(isValidImmShift(imm, id->idOpSize()));
9257 code |= insEncodeDatasizeBF(code, id->idOpSize()); // X........X
9258 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9259 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9260 code |= insEncodeReg_Rm(id->idReg2()); // Reg2 also in mmmmm
9261 code |= insEncodeShiftCount(imm, id->idOpSize()); // ssssss
9262 dst += emitOutput_Instr(dst, code);
9265 case IF_DI_2C: // DI_2C X........Nrrrrrr ssssssnnnnnddddd Rd Rn imm(N,r,s)
9266 imm = emitGetInsSC(id);
9267 assert(isValidImmNRS(imm, id->idOpSize()));
9268 code = emitInsCode(ins, fmt);
9269 code |= ((code_t)imm << 10); // Nrrrrrrssssss
9270 code |= insEncodeDatasize(id->idOpSize()); // X
9271 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9272 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9273 dst += emitOutput_Instr(dst, code);
9276 case IF_DI_2D: // DI_2D X........Nrrrrrr ssssssnnnnnddddd Rd Rn imr, imms (N,r,s)
9277 if (ins == INS_asr || ins == INS_lsl || ins == INS_lsr)
9279 imm = emitGetInsSC(id);
9280 assert(isValidImmShift(imm, id->idOpSize()));
9282 // Shift immediates are aliases of the SBFM/UBFM instructions
9283 // that actually take 2 registers and 2 constants,
9284 // Since we stored the shift immediate value
9285 // we need to calculate the N,R and S values here.
9290 bmi.immN = (size == EA_8BYTE) ? 1 : 0;
9292 bmi.immS = (size == EA_8BYTE) ? 0x3f : 0x1f;
9294 // immR and immS are now set correctly for INS_asr and INS_lsr
9295 // but for INS_lsl we have to adjust the values for immR and immS
9299 bmi.immR = -imm & bmi.immS;
9300 bmi.immS = bmi.immS - imm;
9303 // setup imm with the proper 13 bit value N:R:S
9309 // The other instructions have already have encoded N,R and S values
9310 imm = emitGetInsSC(id);
9312 assert(isValidImmNRS(imm, id->idOpSize()));
9314 code = emitInsCode(ins, fmt);
9315 code |= ((code_t)imm << 10); // Nrrrrrrssssss
9316 code |= insEncodeDatasize(id->idOpSize()); // X
9317 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9318 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9319 dst += emitOutput_Instr(dst, code);
9322 case IF_DR_1D: // DR_1D X............... cccc.......ddddd Rd cond
9323 imm = emitGetInsSC(id);
9324 assert(isValidImmCond(imm));
9327 cfi.immCFVal = (unsigned)imm;
9328 code = emitInsCode(ins, fmt);
9329 code |= insEncodeDatasize(id->idOpSize()); // X
9330 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9331 code |= insEncodeInvertedCond(cfi.cond); // cccc
9332 dst += emitOutput_Instr(dst, code);
9336 case IF_DR_2A: // DR_2A X..........mmmmm ......nnnnn..... Rn Rm
9337 assert(insOptsNone(id->idInsOpt()));
9338 code = emitInsCode(ins, fmt);
9339 code |= insEncodeDatasize(id->idOpSize()); // X
9340 code |= insEncodeReg_Rn(id->idReg1()); // nnnnn
9341 code |= insEncodeReg_Rm(id->idReg2()); // mmmmm
9342 dst += emitOutput_Instr(dst, code);
9345 case IF_DR_2B: // DR_2B X.......sh.mmmmm ssssssnnnnn..... Rn Rm {LSL,LSR,ASR,ROR} imm(0-63)
9346 code = emitInsCode(ins, fmt);
9347 imm = emitGetInsSC(id);
9348 assert(isValidImmShift(imm, id->idOpSize()));
9349 code |= insEncodeDatasize(id->idOpSize()); // X
9350 code |= insEncodeShiftType(id->idInsOpt()); // sh
9351 code |= insEncodeShiftCount(imm, id->idOpSize()); // ssssss
9352 code |= insEncodeReg_Rn(id->idReg1()); // nnnnn
9353 code |= insEncodeReg_Rm(id->idReg2()); // mmmmm
9354 dst += emitOutput_Instr(dst, code);
9357 case IF_DR_2C: // DR_2C X..........mmmmm ooosssnnnnn..... Rn Rm ext(Rm) LSL imm(0-4)
9358 code = emitInsCode(ins, fmt);
9359 imm = emitGetInsSC(id);
9360 assert((imm >= 0) && (imm <= 4)); // imm [0..4]
9361 code |= insEncodeDatasize(id->idOpSize()); // X
9362 code |= insEncodeExtend(id->idInsOpt()); // ooo
9363 code |= insEncodeExtendScale(imm); // sss
9364 code |= insEncodeReg_Rn(id->idReg1()); // nnnnn
9365 code |= insEncodeReg_Rm(id->idReg2()); // mmmmm
9366 dst += emitOutput_Instr(dst, code);
9369 case IF_DR_2D: // DR_2D X..........nnnnn cccc..nnnnnddddd Rd Rn cond
9370 imm = emitGetInsSC(id);
9371 assert(isValidImmCond(imm));
9374 cfi.immCFVal = (unsigned)imm;
9375 code = emitInsCode(ins, fmt);
9376 code |= insEncodeDatasize(id->idOpSize()); // X
9377 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9378 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9379 code |= insEncodeReg_Rm(id->idReg2()); // mmmmm
9380 code |= insEncodeInvertedCond(cfi.cond); // cccc
9381 dst += emitOutput_Instr(dst, code);
9385 case IF_DR_2E: // DR_2E X..........mmmmm ...........ddddd Rd Rm
9386 code = emitInsCode(ins, fmt);
9387 code |= insEncodeDatasize(id->idOpSize()); // X
9388 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9389 code |= insEncodeReg_Rm(id->idReg2()); // mmmmm
9390 dst += emitOutput_Instr(dst, code);
9393 case IF_DR_2F: // DR_2F X.......sh.mmmmm ssssss.....ddddd Rd Rm {LSL,LSR,ASR} imm(0-63)
9394 code = emitInsCode(ins, fmt);
9395 imm = emitGetInsSC(id);
9396 assert(isValidImmShift(imm, id->idOpSize()));
9397 code |= insEncodeDatasize(id->idOpSize()); // X
9398 code |= insEncodeShiftType(id->idInsOpt()); // sh
9399 code |= insEncodeShiftCount(imm, id->idOpSize()); // ssssss
9400 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9401 code |= insEncodeReg_Rm(id->idReg2()); // mmmmm
9402 dst += emitOutput_Instr(dst, code);
9405 case IF_DR_2G: // DR_2G X............... .....xnnnnnddddd Rd Rn
9406 code = emitInsCode(ins, fmt);
9407 code |= insEncodeDatasize(id->idOpSize()); // X
9410 if (size == EA_8BYTE)
9412 code |= 0x00000400; // x - bit at location 10
9415 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9416 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9417 dst += emitOutput_Instr(dst, code);
9420 case IF_DR_2H: // DR_2H X........X...... ......nnnnnddddd Rd Rn
9421 code = emitInsCode(ins, fmt);
9422 code |= insEncodeDatasizeBF(code, id->idOpSize()); // X........X
9423 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9424 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9425 dst += emitOutput_Instr(dst, code);
9428 case IF_DR_2I: // DR_2I X..........mmmmm cccc..nnnnn.nzcv Rn Rm nzcv cond
9429 imm = emitGetInsSC(id);
9430 assert(isValidImmCondFlags(imm));
9433 cfi.immCFVal = (unsigned)imm;
9434 code = emitInsCode(ins, fmt);
9435 code |= insEncodeDatasize(id->idOpSize()); // X
9436 code |= insEncodeReg_Rn(id->idReg1()); // nnnnn
9437 code |= insEncodeReg_Rm(id->idReg2()); // mmmmm
9438 code |= insEncodeFlags(cfi.flags); // nzcv
9439 code |= insEncodeCond(cfi.cond); // cccc
9440 dst += emitOutput_Instr(dst, code);
9444 case IF_DR_3A: // DR_3A X..........mmmmm ......nnnnnmmmmm Rd Rn Rm
9445 code = emitInsCode(ins, fmt);
9446 code |= insEncodeDatasize(id->idOpSize()); // X
9447 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9448 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9449 if (id->idIsLclVar())
9451 code |= insEncodeReg_Rm(codeGen->rsGetRsvdReg()); // mmmmm
9455 code |= insEncodeReg_Rm(id->idReg3()); // mmmmm
9457 dst += emitOutput_Instr(dst, code);
9460 case IF_DR_3B: // DR_3B X.......sh.mmmmm ssssssnnnnnddddd Rd Rn Rm {LSL,LSR,ASR} imm(0-63)
9461 code = emitInsCode(ins, fmt);
9462 imm = emitGetInsSC(id);
9463 assert(isValidImmShift(imm, id->idOpSize()));
9464 code |= insEncodeDatasize(id->idOpSize()); // X
9465 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9466 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9467 code |= insEncodeReg_Rm(id->idReg3()); // mmmmm
9468 code |= insEncodeShiftType(id->idInsOpt()); // sh
9469 code |= insEncodeShiftCount(imm, id->idOpSize()); // ssssss
9470 dst += emitOutput_Instr(dst, code);
9473 case IF_DR_3C: // DR_3C X..........mmmmm ooosssnnnnnddddd Rd Rn Rm ext(Rm) LSL imm(0-4)
9474 code = emitInsCode(ins, fmt);
9475 imm = emitGetInsSC(id);
9476 assert((imm >= 0) && (imm <= 4)); // imm [0..4]
9477 code |= insEncodeDatasize(id->idOpSize()); // X
9478 code |= insEncodeExtend(id->idInsOpt()); // ooo
9479 code |= insEncodeExtendScale(imm); // sss
9480 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9481 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9482 code |= insEncodeReg_Rm(id->idReg3()); // mmmmm
9483 dst += emitOutput_Instr(dst, code);
9486 case IF_DR_3D: // DR_3D X..........mmmmm cccc..nnnnnddddd Rd Rn Rm cond
9487 imm = emitGetInsSC(id);
9488 assert(isValidImmCond(imm));
9491 cfi.immCFVal = (unsigned)imm;
9492 code = emitInsCode(ins, fmt);
9493 code |= insEncodeDatasize(id->idOpSize()); // X
9494 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9495 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9496 code |= insEncodeReg_Rm(id->idReg3()); // mmmmm
9497 code |= insEncodeCond(cfi.cond); // cccc
9498 dst += emitOutput_Instr(dst, code);
9502 case IF_DR_3E: // DR_3E X........X.mmmmm ssssssnnnnnddddd Rd Rn Rm imm(0-63)
9503 code = emitInsCode(ins, fmt);
9504 imm = emitGetInsSC(id);
9505 assert(isValidImmShift(imm, id->idOpSize()));
9506 code |= insEncodeDatasizeBF(code, id->idOpSize()); // X........X
9507 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9508 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9509 code |= insEncodeReg_Rm(id->idReg3()); // mmmmm
9510 code |= insEncodeShiftCount(imm, id->idOpSize()); // ssssss
9511 dst += emitOutput_Instr(dst, code);
9514 case IF_DR_4A: // DR_4A X..........mmmmm .aaaaannnnnmmmmm Rd Rn Rm Ra
9515 code = emitInsCode(ins, fmt);
9516 code |= insEncodeDatasize(id->idOpSize()); // X
9517 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9518 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9519 code |= insEncodeReg_Rm(id->idReg3()); // mmmmm
9520 code |= insEncodeReg_Ra(id->idReg4()); // aaaaa
9521 dst += emitOutput_Instr(dst, code);
9524 case IF_DV_1A: // DV_1A .........X.iiiii iii........ddddd Vd imm8 (fmov - immediate scalar)
9525 imm = emitGetInsSC(id);
9526 elemsize = id->idOpSize();
9527 code = emitInsCode(ins, fmt);
9528 code |= insEncodeFloatElemsize(elemsize); // X
9529 code |= ((code_t)imm << 13); // iiiii iii
9530 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9531 dst += emitOutput_Instr(dst, code);
9534 case IF_DV_1B: // DV_1B .QX..........iii cmod..iiiiiddddd Vd imm8 (immediate vector)
9535 imm = emitGetInsSC(id) & 0x0ff;
9536 immShift = (emitGetInsSC(id) & 0x700) >> 8;
9537 elemsize = optGetElemsize(id->idInsOpt());
9542 cmode = 0xE; // 1110
9546 cmode |= (immShift << 1); // 10x0
9552 cmode |= (immShift << 1); // 0xx0
9562 cmode = 0xE; // 1110
9569 code = emitInsCode(ins, fmt);
9570 code |= insEncodeVectorsize(id->idOpSize()); // Q
9571 if ((ins == INS_fmov) || (ins == INS_movi))
9573 if (elemsize == EA_8BYTE)
9575 code |= 0x20000000; // X
9578 if (ins != INS_fmov)
9580 assert((cmode >= 0) && (cmode <= 0xF));
9581 code |= (cmode << 12); // cmod
9583 code |= (((code_t)imm >> 5) << 16); // iii
9584 code |= (((code_t)imm & 0x1f) << 5); // iiiii
9585 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9586 dst += emitOutput_Instr(dst, code);
9589 case IF_DV_1C: // DV_1C .........X...... ......nnnnn..... Vn #0.0 (fcmp - with zero)
9590 elemsize = id->idOpSize();
9591 code = emitInsCode(ins, fmt);
9592 code |= insEncodeFloatElemsize(elemsize); // X
9593 code |= insEncodeReg_Vn(id->idReg1()); // nnnnn
9594 dst += emitOutput_Instr(dst, code);
9597 case IF_DV_2A: // DV_2A .Q.......X...... ......nnnnnddddd Vd Vn (fabs, fcvt - vector)
9598 elemsize = optGetElemsize(id->idInsOpt());
9599 code = emitInsCode(ins, fmt);
9600 code |= insEncodeVectorsize(id->idOpSize()); // Q
9601 code |= insEncodeFloatElemsize(elemsize); // X
9602 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9603 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9604 dst += emitOutput_Instr(dst, code);
9607 case IF_DV_2B: // DV_2B .Q.........iiiii ......nnnnnddddd Rd Vn[] (umov/smov - to general)
9608 elemsize = id->idOpSize();
9609 index = emitGetInsSC(id);
9610 datasize = (elemsize == EA_8BYTE) ? EA_16BYTE : EA_8BYTE;
9611 if (ins == INS_smov)
9613 datasize = EA_16BYTE;
9615 code = emitInsCode(ins, fmt);
9616 code |= insEncodeVectorsize(datasize); // Q
9617 code |= insEncodeVectorIndex(elemsize, index); // iiiii
9618 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9619 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9620 dst += emitOutput_Instr(dst, code);
9623 case IF_DV_2C: // DV_2C .Q.........iiiii ......nnnnnddddd Vd Rn (dup/ins - vector from general)
9626 datasize = id->idOpSize();
9627 elemsize = optGetElemsize(id->idInsOpt());
9632 datasize = EA_16BYTE;
9633 elemsize = id->idOpSize();
9634 index = emitGetInsSC(id);
9636 code = emitInsCode(ins, fmt);
9637 code |= insEncodeVectorsize(datasize); // Q
9638 code |= insEncodeVectorIndex(elemsize, index); // iiiii
9639 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9640 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9641 dst += emitOutput_Instr(dst, code);
9644 case IF_DV_2D: // DV_2D .Q.........iiiii ......nnnnnddddd Vd Vn[] (dup - vector)
9645 index = emitGetInsSC(id);
9646 elemsize = optGetElemsize(id->idInsOpt());
9647 code = emitInsCode(ins, fmt);
9648 code |= insEncodeVectorsize(id->idOpSize()); // Q
9649 code |= insEncodeVectorIndex(elemsize, index); // iiiii
9650 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9651 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9652 dst += emitOutput_Instr(dst, code);
9655 case IF_DV_2E: // DV_2E ...........iiiii ......nnnnnddddd Vd Vn[] (dup - scalar)
9656 index = emitGetInsSC(id);
9657 elemsize = id->idOpSize();
9658 code = emitInsCode(ins, fmt);
9659 code |= insEncodeVectorIndex(elemsize, index); // iiiii
9660 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9661 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9662 dst += emitOutput_Instr(dst, code);
9665 case IF_DV_2F: // DV_2F ...........iiiii .jjjj.nnnnnddddd Vd[] Vn[] (ins - element)
9666 elemsize = id->idOpSize();
9667 imm = emitGetInsSC(id);
9668 index = (imm >> 4) & 0xf;
9670 code = emitInsCode(ins, fmt);
9671 code |= insEncodeVectorIndex(elemsize, index); // iiiii
9672 code |= insEncodeVectorIndex2(elemsize, index2); // jjjj
9673 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9674 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9675 dst += emitOutput_Instr(dst, code);
9678 case IF_DV_2G: // DV_2G .........X...... ......nnnnnddddd Vd Vn (fmov,fcvtXX - register)
9679 elemsize = id->idOpSize();
9680 code = emitInsCode(ins, fmt);
9681 code |= insEncodeFloatElemsize(elemsize); // X
9682 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9683 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9684 dst += emitOutput_Instr(dst, code);
9687 case IF_DV_2H: // DV_2H X........X...... ......nnnnnddddd Rd Vn (fmov - to general)
9688 elemsize = id->idOpSize();
9689 code = emitInsCode(ins, fmt);
9690 code |= insEncodeConvertOpt(fmt, id->idInsOpt()); // X X
9691 code |= insEncodeReg_Rd(id->idReg1()); // ddddd
9692 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9693 dst += emitOutput_Instr(dst, code);
9696 case IF_DV_2I: // DV_2I X........X...... ......nnnnnddddd Vd Rn (fmov - from general)
9697 elemsize = id->idOpSize();
9698 code = emitInsCode(ins, fmt);
9699 code |= insEncodeConvertOpt(fmt, id->idInsOpt()); // X X
9700 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9701 code |= insEncodeReg_Rn(id->idReg2()); // nnnnn
9702 dst += emitOutput_Instr(dst, code);
9705 case IF_DV_2J: // DV_2J ........SS.....D D.....nnnnnddddd Vd Vn (fcvt)
9706 code = emitInsCode(ins, fmt);
9707 code |= insEncodeConvertOpt(fmt, id->idInsOpt()); // SS DD
9708 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9709 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9710 dst += emitOutput_Instr(dst, code);
9713 case IF_DV_2K: // DV_2K .........X.mmmmm ......nnnnn..... Vn Vm (fcmp)
9714 elemsize = id->idOpSize();
9715 code = emitInsCode(ins, fmt);
9716 code |= insEncodeFloatElemsize(elemsize); // X
9717 code |= insEncodeReg_Vn(id->idReg1()); // nnnnn
9718 code |= insEncodeReg_Vm(id->idReg2()); // mmmmm
9719 dst += emitOutput_Instr(dst, code);
9722 case IF_DV_2L: // DV_2L ........XX...... ......nnnnnddddd Vd Vn (abs, neg - scalar)
9723 elemsize = id->idOpSize();
9724 code = emitInsCode(ins, fmt);
9725 code |= insEncodeElemsize(elemsize); // XX
9726 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9727 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9728 dst += emitOutput_Instr(dst, code);
9731 case IF_DV_2M: // DV_2M .Q......XX...... ......nnnnnddddd Vd Vn (abs, neg - vector)
9732 elemsize = optGetElemsize(id->idInsOpt());
9733 code = emitInsCode(ins, fmt);
9734 code |= insEncodeVectorsize(id->idOpSize()); // Q
9735 code |= insEncodeElemsize(elemsize); // XX
9736 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9737 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9738 dst += emitOutput_Instr(dst, code);
9741 case IF_DV_2N: // DV_2N .........iiiiiii ......nnnnnddddd Vd Vn imm (shift - scalar)
9742 imm = emitGetInsSC(id);
9743 code = emitInsCode(ins, fmt);
9744 code |= insEncodeVectorShift(EA_8BYTE, imm); // iiiiiii
9745 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9746 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9747 dst += emitOutput_Instr(dst, code);
9750 case IF_DV_2O: // DV_2O .Q.......iiiiiii ......nnnnnddddd Vd Vn imm (shift - vector)
9751 imm = emitGetInsSC(id);
9752 elemsize = optGetElemsize(id->idInsOpt());
9753 code = emitInsCode(ins, fmt);
9754 code |= insEncodeVectorsize(id->idOpSize()); // Q
9755 code |= insEncodeVectorShift(elemsize, imm); // iiiiiii
9756 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9757 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9758 dst += emitOutput_Instr(dst, code);
9761 case IF_DV_3A: // DV_3A .Q......XX.mmmmm ......nnnnnddddd Vd Vn Vm (vector)
9762 code = emitInsCode(ins, fmt);
9763 elemsize = optGetElemsize(id->idInsOpt());
9764 code |= insEncodeVectorsize(id->idOpSize()); // Q
9765 code |= insEncodeElemsize(elemsize); // XX
9766 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9767 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9768 code |= insEncodeReg_Vm(id->idReg3()); // mmmmm
9769 dst += emitOutput_Instr(dst, code);
9772 case IF_DV_3AI: // DV_3AI .Q......XXLMmmmm ....H.nnnnnddddd Vd Vn Vm[] (vector)
9773 code = emitInsCode(ins, fmt);
9774 imm = emitGetInsSC(id);
9775 elemsize = optGetElemsize(id->idInsOpt());
9776 assert(isValidVectorIndex(EA_16BYTE, elemsize, imm));
9777 code |= insEncodeVectorsize(id->idOpSize()); // Q
9778 code |= insEncodeElemsize(elemsize); // XX
9779 code |= insEncodeVectorIndexLMH(elemsize, imm); // LM H
9780 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9781 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9782 code |= insEncodeReg_Vm(id->idReg3()); // mmmmm
9783 dst += emitOutput_Instr(dst, code);
9786 case IF_DV_3B: // DV_3B .Q.......X.mmmmm ......nnnnnddddd Vd Vn Vm (vector)
9787 code = emitInsCode(ins, fmt);
9788 elemsize = optGetElemsize(id->idInsOpt());
9789 code |= insEncodeVectorsize(id->idOpSize()); // Q
9790 code |= insEncodeFloatElemsize(elemsize); // X
9791 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9792 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9793 code |= insEncodeReg_Vm(id->idReg3()); // mmmmm
9794 dst += emitOutput_Instr(dst, code);
9797 case IF_DV_3BI: // DV_3BI .Q.......XLmmmmm ....H.nnnnnddddd Vd Vn Vm[] (vector by elem)
9798 code = emitInsCode(ins, fmt);
9799 imm = emitGetInsSC(id);
9800 elemsize = optGetElemsize(id->idInsOpt());
9801 assert(isValidVectorIndex(id->idOpSize(), elemsize, imm));
9802 code |= insEncodeVectorsize(id->idOpSize()); // Q
9803 code |= insEncodeFloatElemsize(elemsize); // X
9804 code |= insEncodeFloatIndex(elemsize, imm); // L H
9805 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9806 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9807 code |= insEncodeReg_Vm(id->idReg3()); // mmmmm
9808 dst += emitOutput_Instr(dst, code);
9811 case IF_DV_3C: // DV_3C .Q.........mmmmm ......nnnnnddddd Vd Vn Vm (vector)
9812 code = emitInsCode(ins, fmt);
9813 code |= insEncodeVectorsize(id->idOpSize()); // Q
9814 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9815 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9816 code |= insEncodeReg_Vm(id->idReg3()); // mmmmm
9817 dst += emitOutput_Instr(dst, code);
9820 case IF_DV_3D: // DV_3D .........X.mmmmm ......nnnnnddddd Vd Vn Vm (scalar)
9821 code = emitInsCode(ins, fmt);
9822 code |= insEncodeFloatElemsize(id->idOpSize()); // X
9823 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9824 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9825 code |= insEncodeReg_Vm(id->idReg3()); // mmmmm
9826 dst += emitOutput_Instr(dst, code);
9829 case IF_DV_3DI: // DV_3DI .........XLmmmmm ....H.nnnnnddddd Vd Vn Vm[] (scalar by elem)
9830 code = emitInsCode(ins, fmt);
9831 imm = emitGetInsSC(id);
9832 elemsize = id->idOpSize();
9833 assert(isValidVectorIndex(EA_16BYTE, elemsize, imm));
9834 code |= insEncodeFloatElemsize(elemsize); // X
9835 code |= insEncodeFloatIndex(elemsize, imm); // L H
9836 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9837 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9838 code |= insEncodeReg_Vm(id->idReg3()); // mmmmm
9839 dst += emitOutput_Instr(dst, code);
9842 case IF_DV_3E: // DV_3E ...........mmmmm ......nnnnnddddd Vd Vn Vm (scalar)
9843 code = emitInsCode(ins, fmt);
9844 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9845 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9846 code |= insEncodeReg_Vm(id->idReg3()); // mmmmm
9847 dst += emitOutput_Instr(dst, code);
9850 case IF_DV_4A: // DV_4A .........X.mmmmm .aaaaannnnnddddd Vd Va Vn Vm (scalar)
9851 code = emitInsCode(ins, fmt);
9852 elemsize = id->idOpSize();
9853 code |= insEncodeFloatElemsize(elemsize); // X
9854 code |= insEncodeReg_Vd(id->idReg1()); // ddddd
9855 code |= insEncodeReg_Vn(id->idReg2()); // nnnnn
9856 code |= insEncodeReg_Vm(id->idReg3()); // mmmmm
9857 code |= insEncodeReg_Va(id->idReg4()); // aaaaa
9858 dst += emitOutput_Instr(dst, code);
9861 case IF_SN_0A: // SN_0A ................ ................
9862 code = emitInsCode(ins, fmt);
9863 dst += emitOutput_Instr(dst, code);
9866 case IF_SI_0A: // SI_0A ...........iiiii iiiiiiiiiii..... imm16
9867 imm = emitGetInsSC(id);
9868 assert(isValidUimm16(imm));
9869 code = emitInsCode(ins, fmt);
9870 code |= ((code_t)imm << 5); // iiiii iiiiiiiiiii
9871 dst += emitOutput_Instr(dst, code);
9874 case IF_SI_0B: // SI_0B ................ ....bbbb........ imm4 - barrier
9875 imm = emitGetInsSC(id);
9876 assert((imm >= 0) && (imm <= 15));
9877 code = emitInsCode(ins, fmt);
9878 code |= ((code_t)imm << 8); // bbbb
9879 dst += emitOutput_Instr(dst, code);
9883 assert(!"Unexpected format");
9887 // Determine if any registers now hold GC refs, or whether a register that was overwritten held a GC ref.
9888 // We assume here that "id->idGCref()" is not GC_NONE only if the instruction described by "id" writes a
9889 // GC ref to register "id->idReg1()". (It may, apparently, also not be GC_NONE in other cases, such as
9890 // for stores, but we ignore those cases here.)
9891 if (emitInsMayWriteToGCReg(id)) // True if "id->idIns()" writes to a register than can hold GC ref.
9893 // We assume that "idReg1" is the primary destination register for all instructions
9894 if (id->idGCref() != GCT_NONE)
9896 emitGCregLiveUpd(id->idGCref(), id->idReg1(), dst);
9900 emitGCregDeadUpd(id->idReg1(), dst);
9903 if (emitInsMayWriteMultipleRegs(id))
9906 // "idReg2" is the secondary destination register
9907 if (id->idGCrefReg2() != GCT_NONE)
9909 emitGCregLiveUpd(id->idGCrefReg2(), id->idReg2(), dst);
9913 emitGCregDeadUpd(id->idReg2(), dst);
9918 // Now we determine if the instruction has written to a (local variable) stack location, and either written a GC
9919 // ref or overwritten one.
9920 if (emitInsWritesToLclVarStackLoc(id) || emitInsWritesToLclVarStackLocPair(id))
9922 int varNum = id->idAddr()->iiaLclVar.lvaVarNum();
9923 unsigned ofs = AlignDown(id->idAddr()->iiaLclVar.lvaOffset(), sizeof(size_t));
9925 int adr = emitComp->lvaFrameAddress(varNum, &FPbased);
9926 if (id->idGCref() != GCT_NONE)
9928 emitGCvarLiveUpd(adr + ofs, varNum, id->idGCref(), dst);
9932 // If the type of the local is a gc ref type, update the liveness.
9936 // "Regular" (non-spill-temp) local.
9937 vt = var_types(emitComp->lvaTable[varNum].lvType);
9941 TempDsc* tmpDsc = emitComp->tmpFindNum(varNum);
9942 vt = tmpDsc->tdTempType();
9944 if (vt == TYP_REF || vt == TYP_BYREF)
9945 emitGCvarDeadUpd(adr + ofs, dst);
9947 if (emitInsWritesToLclVarStackLocPair(id))
9949 unsigned ofs2 = ofs + sizeof(size_t);
9950 if (id->idGCrefReg2() != GCT_NONE)
9952 emitGCvarLiveUpd(adr + ofs2, varNum, id->idGCrefReg2(), dst);
9956 // If the type of the local is a gc ref type, update the liveness.
9960 // "Regular" (non-spill-temp) local.
9961 vt = var_types(emitComp->lvaTable[varNum].lvType);
9965 TempDsc* tmpDsc = emitComp->tmpFindNum(varNum);
9966 vt = tmpDsc->tdTempType();
9968 if (vt == TYP_REF || vt == TYP_BYREF)
9969 emitGCvarDeadUpd(adr + ofs2, dst);
9975 /* Make sure we set the instruction descriptor size correctly */
9977 size_t expected = emitSizeOfInsDsc(id);
9978 assert(sz == expected);
9980 if (emitComp->opts.disAsm || emitComp->opts.dspEmit || emitComp->verbose)
9982 emitDispIns(id, false, dspOffs, true, emitCurCodeOffs(odst), *dp, (dst - *dp), ig);
9985 if (emitComp->compDebugBreak)
9987 // For example, set JitBreakEmitOutputInstr=a6 will break when this method is called for
9988 // emitting instruction a6, (i.e. IN00a6 in jitdump).
9989 if ((unsigned)JitConfig.JitBreakEmitOutputInstr() == id->idDebugOnlyInfo()->idNum)
9991 assert(!"JitBreakEmitOutputInstr reached");
9996 /* All instructions are expected to generate code */
10005 /*****************************************************************************/
10006 /*****************************************************************************/
10010 /*****************************************************************************
10012 * Display the instruction name
10014 void emitter::emitDispInst(instruction ins)
10016 const char* insstr = codeGen->genInsName(ins);
10017 size_t len = strlen(insstr);
10019 /* Display the instruction name */
10021 printf("%s", insstr);
10024 // Add at least one space after the instruction name
10025 // and add spaces until we have reach the normal size of 8
10033 /*****************************************************************************
10035 * Display an reloc value
10036 * If we are formatting for an assembly listing don't print the hex value
10037 * since it will prevent us from doing assembly diffs
10039 void emitter::emitDispReloc(int value, bool addComma)
10041 if (emitComp->opts.disAsm)
10047 printf("(reloc 0x%x)", dspPtr(value));
10054 /*****************************************************************************
10056 * Display an immediate value
10058 void emitter::emitDispImm(ssize_t imm, bool addComma, bool alwaysHex /* =false */)
10065 // Munge any pointers if we want diff-able disassembly
10066 if (emitComp->opts.disDiffable)
10068 ssize_t top44bits = (imm >> 20);
10069 if ((top44bits != 0) && (top44bits != -1))
10073 if (!alwaysHex && (imm > -1000) && (imm < 1000))
10079 if ((imm < 0) && ((imm & 0xFFFFFFFF00000000LL) == 0xFFFFFFFF00000000LL))
10085 if ((imm & 0xFFFFFFFF00000000LL) != 0)
10087 printf("0x%llx", imm);
10091 printf("0x%02x", imm);
10099 /*****************************************************************************
10101 * Display a float zero constant
10103 void emitter::emitDispFloatZero()
10112 /*****************************************************************************
10114 * Display an encoded float constant value
10116 void emitter::emitDispFloatImm(ssize_t imm8)
10118 assert((0 <= imm8) && (imm8 <= 0x0ff));
10125 fpImm.immFPIVal = (unsigned)imm8;
10126 double result = emitDecodeFloatImm8(fpImm);
10128 printf("%.4f", result);
10131 /*****************************************************************************
10133 * Display an immediate that is optionally LSL12.
10135 void emitter::emitDispImmOptsLSL12(ssize_t imm, insOpts opt)
10137 if (!strictArmAsm && insOptsLSL12(opt))
10141 emitDispImm(imm, false);
10142 if (strictArmAsm && insOptsLSL12(opt))
10144 printf(", LSL #12");
10148 /*****************************************************************************
10150 * Display an ARM64 condition code for the conditional instructions
10152 void emitter::emitDispCond(insCond cond)
10154 const static char* armCond[16] = {"eq", "ne", "hs", "lo", "mi", "pl", "vs", "vc",
10155 "hi", "ls", "ge", "lt", "gt", "le", "AL", "NV"}; // The last two are invalid
10156 unsigned imm = (unsigned)cond;
10157 assert((0 <= imm) && (imm < ArrLen(armCond)));
10158 printf(armCond[imm]);
10161 /*****************************************************************************
10163 * Display an ARM64 flags for the conditional instructions
10165 void emitter::emitDispFlags(insCflags flags)
10167 const static char* armFlags[16] = {"0", "v", "c", "cv", "z", "zv", "zc", "zcv",
10168 "n", "nv", "nc", "ncv", "nz", "nzv", "nzc", "nzcv"};
10169 unsigned imm = (unsigned)flags;
10170 assert((0 <= imm) && (imm < ArrLen(armFlags)));
10171 printf(armFlags[imm]);
10174 /*****************************************************************************
10176 * Display an ARM64 'barrier' for the memory barrier instructions
10178 void emitter::emitDispBarrier(insBarrier barrier)
10180 const static char* armBarriers[16] = {"#0", "oshld", "oshst", "osh", "#4", "nshld", "nshst", "nsh",
10181 "#8", "ishld", "ishst", "ish", "#12", "ld", "st", "sy"};
10182 unsigned imm = (unsigned)barrier;
10183 assert((0 <= imm) && (imm < ArrLen(armBarriers)));
10184 printf(armBarriers[imm]);
10187 /*****************************************************************************
10189 * Prints the encoding for the Shift Type encoding
10192 void emitter::emitDispShiftOpts(insOpts opt)
10194 if (opt == INS_OPTS_LSL)
10196 else if (opt == INS_OPTS_LSR)
10198 else if (opt == INS_OPTS_ASR)
10200 else if (opt == INS_OPTS_ROR)
10202 else if (opt == INS_OPTS_MSL)
10205 assert(!"Bad value");
10208 /*****************************************************************************
10210 * Prints the encoding for the Extend Type encoding
10213 void emitter::emitDispExtendOpts(insOpts opt)
10215 if (opt == INS_OPTS_UXTB)
10217 else if (opt == INS_OPTS_UXTH)
10219 else if (opt == INS_OPTS_UXTW)
10221 else if (opt == INS_OPTS_UXTX)
10223 else if (opt == INS_OPTS_SXTB)
10225 else if (opt == INS_OPTS_SXTH)
10227 else if (opt == INS_OPTS_SXTW)
10229 else if (opt == INS_OPTS_SXTX)
10232 assert(!"Bad value");
10235 /*****************************************************************************
10237 * Prints the encoding for the Extend Type encoding in loads/stores
10240 void emitter::emitDispLSExtendOpts(insOpts opt)
10242 if (opt == INS_OPTS_LSL)
10244 else if (opt == INS_OPTS_UXTW)
10246 else if (opt == INS_OPTS_UXTX)
10248 else if (opt == INS_OPTS_SXTW)
10250 else if (opt == INS_OPTS_SXTX)
10253 assert(!"Bad value");
10256 /*****************************************************************************
10258 * Display a register
10260 void emitter::emitDispReg(regNumber reg, emitAttr attr, bool addComma)
10262 emitAttr size = EA_SIZE(attr);
10263 printf(emitRegName(reg, size));
10269 /*****************************************************************************
10271 * Display a vector register with an arrangement suffix
10273 void emitter::emitDispVectorReg(regNumber reg, insOpts opt, bool addComma)
10275 assert(isVectorRegister(reg));
10276 printf(emitVectorRegName(reg));
10277 emitDispArrangement(opt);
10283 /*****************************************************************************
10285 * Display an vector register index suffix
10287 void emitter::emitDispVectorRegIndex(regNumber reg, emitAttr elemsize, ssize_t index, bool addComma)
10289 assert(isVectorRegister(reg));
10290 printf(emitVectorRegName(reg));
10307 assert(!"invalid elemsize");
10311 printf("[%d]", index);
10317 /*****************************************************************************
10319 * Display an arrangement suffix
10321 void emitter::emitDispArrangement(insOpts opt)
10323 const char* str = "???";
10353 assert(!"Invalid insOpt for vector register");
10359 /*****************************************************************************
10361 * Display a register with an optional shift operation
10363 void emitter::emitDispShiftedReg(regNumber reg, insOpts opt, ssize_t imm, emitAttr attr)
10365 emitAttr size = EA_SIZE(attr);
10366 assert((imm & 0x003F) == imm);
10367 assert(((imm & 0x0020) == 0) || (size == EA_8BYTE));
10369 printf(emitRegName(reg, size));
10377 emitDispShiftOpts(opt);
10378 emitDispImm(imm, false);
10382 /*****************************************************************************
10384 * Display a register with an optional extend and scale operations
10386 void emitter::emitDispExtendReg(regNumber reg, insOpts opt, ssize_t imm)
10388 assert((imm >= 0) && (imm <= 4));
10389 assert(insOptsNone(opt) || insOptsAnyExtend(opt) || (opt == INS_OPTS_LSL));
10391 // size is based on the extend option, not the instr size.
10392 emitAttr size = insOpts32BitExtend(opt) ? EA_4BYTE : EA_8BYTE;
10396 if (insOptsNone(opt))
10398 emitDispReg(reg, size, false);
10402 emitDispReg(reg, size, true);
10403 if (opt == INS_OPTS_LSL)
10406 emitDispExtendOpts(opt);
10407 if ((imm > 0) || (opt == INS_OPTS_LSL))
10410 emitDispImm(imm, false);
10414 else // !strictArmAsm
10416 if (insOptsNone(opt))
10418 emitDispReg(reg, size, false);
10422 if (opt != INS_OPTS_LSL)
10424 emitDispExtendOpts(opt);
10426 emitDispReg(reg, size, false);
10433 emitDispImm(1 << imm, false);
10438 /*****************************************************************************
10440 * Display an addressing operand [reg + imm]
10442 void emitter::emitDispAddrRI(regNumber reg, insOpts opt, ssize_t imm)
10444 reg = encodingZRtoSP(reg); // ZR (R31) encodes the SP register
10450 emitDispReg(reg, EA_8BYTE, false);
10452 if (!insOptsPostIndex(opt) && (imm != 0))
10455 emitDispImm(imm, false);
10459 if (insOptsPreIndex(opt))
10463 else if (insOptsPostIndex(opt))
10466 emitDispImm(imm, false);
10469 else // !strictArmAsm
10473 const char* operStr = "++";
10480 if (insOptsPreIndex(opt))
10485 emitDispReg(reg, EA_8BYTE, false);
10487 if (insOptsPostIndex(opt))
10492 if (insOptsIndexed(opt))
10498 printf("%c", operStr[1]);
10500 emitDispImm(imm, false);
10505 /*****************************************************************************
10507 * Display an addressing operand [reg + extended reg]
10509 void emitter::emitDispAddrRRExt(regNumber reg1, regNumber reg2, insOpts opt, bool isScaled, emitAttr size)
10511 reg1 = encodingZRtoSP(reg1); // ZR (R31) encodes the SP register
10513 unsigned scale = 0;
10516 scale = NaturalScale_helper(size);
10523 emitDispReg(reg1, EA_8BYTE, true);
10524 emitDispExtendReg(reg2, opt, scale);
10526 else // !strictArmAsm
10528 emitDispReg(reg1, EA_8BYTE, false);
10530 emitDispExtendReg(reg2, opt, scale);
10536 /*****************************************************************************
10538 * Display (optionally) the instruction encoding in hex
10541 void emitter::emitDispInsHex(BYTE* code, size_t sz)
10543 // We do not display the instruction hex if we want diff-able disassembly
10544 if (!emitComp->opts.disDiffable)
10548 printf(" %08X ", (*((code_t*)code)));
10557 /****************************************************************************
10559 * Display the given instruction.
10562 void emitter::emitDispIns(
10563 instrDesc* id, bool isNew, bool doffs, bool asmfm, unsigned offset, BYTE* pCode, size_t sz, insGroup* ig)
10568 id->idDebugOnlyInfo()->idNum; // Do not remove this! It is needed for VisualStudio conditional breakpoints
10570 printf("IN%04x: ", idNum);
10576 if (!emitComp->opts.dspEmit && !isNew && !asmfm && sz)
10579 /* Display the instruction offset */
10581 emitDispInsOffs(offset, doffs);
10583 /* Display the instruction hex code */
10585 emitDispInsHex(pCode, sz);
10589 /* Get the instruction and format */
10591 instruction ins = id->idIns();
10592 insFormat fmt = id->idInsFmt();
10596 /* If this instruction has just been added, check its size */
10598 assert(isNew == false || (int)emitSizeOfInsDsc(id) == emitCurIGfreeNext - (BYTE*)id);
10600 /* Figure out the operand size */
10601 emitAttr size = id->idOpSize();
10602 emitAttr attr = size;
10603 if (id->idGCref() == GCT_GCREF)
10605 else if (id->idGCref() == GCT_BYREF)
10613 bool isExtendAlias;
10622 const char* methodName;
10630 case IF_BI_0A: // BI_0A ......iiiiiiiiii iiiiiiiiiiiiiiii simm26:00
10631 case IF_BI_0B: // BI_0B ......iiiiiiiiii iiiiiiiiiii..... simm19:00
10634 if (fmt == IF_LARGEJMP)
10636 printf("(LARGEJMP)");
10638 if (id->idAddr()->iiaHasInstrCount())
10640 int instrCount = id->idAddr()->iiaGetInstrCount();
10644 printf("pc%s%d instructions", (instrCount >= 0) ? "+" : "", instrCount);
10648 unsigned insNum = emitFindInsNum(ig, id);
10649 UNATIVE_OFFSET srcOffs = ig->igOffs + emitFindOffset(ig, insNum + 1);
10650 UNATIVE_OFFSET dstOffs = ig->igOffs + emitFindOffset(ig, insNum + 1 + instrCount);
10651 ssize_t relOffs = (ssize_t)(emitOffsetToPtr(dstOffs) - emitOffsetToPtr(srcOffs));
10652 printf("pc%s%d (%d instructions)", (relOffs >= 0) ? "+" : "", relOffs, instrCount);
10655 else if (id->idIsBound())
10657 printf("G_M%03u_IG%02u", Compiler::s_compMethodsCount, id->idAddr()->iiaIGlabel->igNum);
10661 printf("L_M%03u_BB%02u", Compiler::s_compMethodsCount, id->idAddr()->iiaBBlabel->bbNum);
10666 case IF_BI_0C: // BI_0C ......iiiiiiiiii iiiiiiiiiiiiiiii simm26:00
10667 if (id->idIsCallAddr())
10669 offs = (ssize_t)id->idAddr()->iiaAddr;
10675 methodName = emitComp->eeGetMethodFullName((CORINFO_METHOD_HANDLE)id->idDebugOnlyInfo()->idMemCookie);
10680 if (id->idIsDspReloc())
10682 printf("%08X", offs);
10686 printf("%s", methodName);
10690 case IF_BI_1A: // BI_1A ......iiiiiiiiii iiiiiiiiiiittttt Rt simm19:00
10691 assert(insOptsNone(id->idInsOpt()));
10692 emitDispReg(id->idReg1(), size, true);
10693 if (id->idIsBound())
10695 printf("G_M%03u_IG%02u", Compiler::s_compMethodsCount, id->idAddr()->iiaIGlabel->igNum);
10699 printf("L_M%03u_BB%02u", Compiler::s_compMethodsCount, id->idAddr()->iiaBBlabel->bbNum);
10703 case IF_BI_1B: // BI_1B B.......bbbbbiii iiiiiiiiiiittttt Rt imm6, simm14:00
10704 assert(insOptsNone(id->idInsOpt()));
10705 emitDispReg(id->idReg1(), size, true);
10706 emitDispImm(emitGetInsSC(id), true);
10707 if (id->idIsBound())
10709 printf("G_M%03u_IG%02u", Compiler::s_compMethodsCount, id->idAddr()->iiaIGlabel->igNum);
10713 printf("L_M%03u_BB%02u", Compiler::s_compMethodsCount, id->idAddr()->iiaBBlabel->bbNum);
10717 case IF_BR_1A: // BR_1A ................ ......nnnnn..... Rn
10718 assert(insOptsNone(id->idInsOpt()));
10719 emitDispReg(id->idReg1(), size, false);
10722 case IF_BR_1B: // BR_1B ................ ......nnnnn..... Rn
10723 assert(insOptsNone(id->idInsOpt()));
10724 emitDispReg(id->idReg3(), size, false);
10727 case IF_LS_1A: // LS_1A XX...V..iiiiiiii iiiiiiiiiiittttt Rt PC imm(1MB)
10728 case IF_DI_1E: // DI_1E .ii.....iiiiiiii iiiiiiiiiiiddddd Rd simm21
10731 assert(insOptsNone(id->idInsOpt()));
10732 emitDispReg(id->idReg1(), size, true);
10733 imm = emitGetInsSC(id);
10735 /* Is this actually a reference to a data section? */
10736 if (fmt == IF_LARGEADR)
10738 printf("(LARGEADR)");
10740 else if (fmt == IF_LARGELDC)
10742 printf("(LARGELDC)");
10746 if (id->idAddr()->iiaIsJitDataOffset())
10748 doffs = Compiler::eeGetJitDataOffs(id->idAddr()->iiaFieldHnd);
10749 /* Display a data section reference */
10752 printf("@CNS%02u", doffs - 1);
10754 printf("@RWD%02u", doffs);
10757 printf("%+Id", imm);
10762 if (id->idIsReloc())
10765 emitDispImm((ssize_t)id->idAddr()->iiaAddr, false);
10767 else if (id->idIsBound())
10769 printf("G_M%03u_IG%02u", Compiler::s_compMethodsCount, id->idAddr()->iiaIGlabel->igNum);
10773 printf("L_M%03u_BB%02u", Compiler::s_compMethodsCount, id->idAddr()->iiaBBlabel->bbNum);
10779 case IF_LS_2A: // LS_2A .X.......X...... ......nnnnnttttt Rt Rn
10780 assert(insOptsNone(id->idInsOpt()));
10781 assert(emitGetInsSC(id) == 0);
10782 emitDispReg(id->idReg1(), emitInsTargetRegSize(id), true);
10783 emitDispAddrRI(id->idReg2(), id->idInsOpt(), 0);
10786 case IF_LS_2B: // LS_2B .X.......Xiiiiii iiiiiinnnnnttttt Rt Rn imm(0-4095)
10787 assert(insOptsNone(id->idInsOpt()));
10788 imm = emitGetInsSC(id);
10789 scale = NaturalScale_helper(emitInsLoadStoreSize(id));
10790 imm <<= scale; // The immediate is scaled by the size of the ld/st
10791 emitDispReg(id->idReg1(), emitInsTargetRegSize(id), true);
10792 emitDispAddrRI(id->idReg2(), id->idInsOpt(), imm);
10795 case IF_LS_2C: // LS_2C .X.......X.iiiii iiiiPPnnnnnttttt Rt Rn imm(-256..+255) no/pre/post inc
10796 assert(insOptsNone(id->idInsOpt()) || insOptsIndexed(id->idInsOpt()));
10797 imm = emitGetInsSC(id);
10798 emitDispReg(id->idReg1(), emitInsTargetRegSize(id), true);
10799 emitDispAddrRI(id->idReg2(), id->idInsOpt(), imm);
10802 case IF_LS_3A: // LS_3A .X.......X.mmmmm oooS..nnnnnttttt Rt Rn Rm ext(Rm) LSL {}
10803 assert(insOptsLSExtend(id->idInsOpt()));
10804 emitDispReg(id->idReg1(), emitInsTargetRegSize(id), true);
10805 if (id->idIsLclVar())
10807 emitDispAddrRRExt(id->idReg2(), codeGen->rsGetRsvdReg(), id->idInsOpt(), false, size);
10811 emitDispAddrRRExt(id->idReg2(), id->idReg3(), id->idInsOpt(), id->idReg3Scaled(), size);
10815 case IF_LS_3B: // LS_3B X............... .aaaaannnnnddddd Rt Ra Rn
10816 assert(insOptsNone(id->idInsOpt()));
10817 assert(emitGetInsSC(id) == 0);
10818 emitDispReg(id->idReg1(), emitInsTargetRegSize(id), true);
10819 emitDispReg(id->idReg2(), emitInsTargetRegSize(id), true);
10820 emitDispAddrRI(id->idReg3(), id->idInsOpt(), 0);
10823 case IF_LS_3C: // LS_3C X.........iiiiii iaaaaannnnnddddd Rt Ra Rn imm(im7,sh)
10824 assert(insOptsNone(id->idInsOpt()) || insOptsIndexed(id->idInsOpt()));
10825 imm = emitGetInsSC(id);
10826 scale = NaturalScale_helper(emitInsLoadStoreSize(id));
10828 emitDispReg(id->idReg1(), emitInsTargetRegSize(id), true);
10829 emitDispReg(id->idReg2(), emitInsTargetRegSize(id), true);
10830 emitDispAddrRI(id->idReg3(), id->idInsOpt(), imm);
10833 case IF_LS_3D: // LS_3D .X.......X.mmmmm ......nnnnnttttt Wm Rt Rn
10834 assert(insOptsNone(id->idInsOpt()));
10835 emitDispReg(id->idReg1(), EA_4BYTE, true);
10836 emitDispReg(id->idReg2(), emitInsTargetRegSize(id), true);
10837 emitDispAddrRI(id->idReg3(), id->idInsOpt(), 0);
10840 case IF_DI_1A: // DI_1A X.......shiiiiii iiiiiinnnnn..... Rn imm(i12,sh)
10841 emitDispReg(id->idReg1(), size, true);
10842 emitDispImmOptsLSL12(emitGetInsSC(id), id->idInsOpt());
10845 case IF_DI_1B: // DI_1B X........hwiiiii iiiiiiiiiiiddddd Rd imm(i16,hw)
10846 emitDispReg(id->idReg1(), size, true);
10847 hwi.immHWVal = (unsigned)emitGetInsSC(id);
10848 if (ins == INS_mov)
10850 emitDispImm(emitDecodeHalfwordImm(hwi, size), false);
10852 else // movz, movn, movk
10854 emitDispImm(hwi.immVal, false);
10855 if (hwi.immHW != 0)
10857 emitDispShiftOpts(INS_OPTS_LSL);
10858 emitDispImm(hwi.immHW * 16, false);
10863 case IF_DI_1C: // DI_1C X........Nrrrrrr ssssssnnnnn..... Rn imm(N,r,s)
10864 emitDispReg(id->idReg1(), size, true);
10865 bmi.immNRS = (unsigned)emitGetInsSC(id);
10866 emitDispImm(emitDecodeBitMaskImm(bmi, size), false);
10869 case IF_DI_1D: // DI_1D X........Nrrrrrr ssssss.....ddddd Rd imm(N,r,s)
10870 emitDispReg(encodingZRtoSP(id->idReg1()), size, true);
10871 bmi.immNRS = (unsigned)emitGetInsSC(id);
10872 emitDispImm(emitDecodeBitMaskImm(bmi, size), false);
10875 case IF_DI_2A: // DI_2A X.......shiiiiii iiiiiinnnnnddddd Rd Rn imm(i12,sh)
10876 if ((ins == INS_add) || (ins == INS_sub))
10878 emitDispReg(encodingZRtoSP(id->idReg1()), size, true);
10879 emitDispReg(encodingZRtoSP(id->idReg2()), size, true);
10883 emitDispReg(id->idReg1(), size, true);
10884 emitDispReg(id->idReg2(), size, true);
10886 emitDispImmOptsLSL12(emitGetInsSC(id), id->idInsOpt());
10889 case IF_DI_2B: // DI_2B X........X.nnnnn ssssssnnnnnddddd Rd Rn imm(0-63)
10890 emitDispReg(id->idReg1(), size, true);
10891 emitDispReg(id->idReg2(), size, true);
10892 emitDispImm(emitGetInsSC(id), false);
10895 case IF_DI_2C: // DI_2C X........Nrrrrrr ssssssnnnnnddddd Rd Rn imm(N,r,s)
10896 if (ins == INS_ands)
10898 emitDispReg(id->idReg1(), size, true);
10902 emitDispReg(encodingZRtoSP(id->idReg1()), size, true);
10904 emitDispReg(id->idReg2(), size, true);
10905 bmi.immNRS = (unsigned)emitGetInsSC(id);
10906 emitDispImm(emitDecodeBitMaskImm(bmi, size), false);
10909 case IF_DI_2D: // DI_2D X........Nrrrrrr ssssssnnnnnddddd Rd Rn imr, ims (N,r,s)
10910 emitDispReg(id->idReg1(), size, true);
10911 emitDispReg(id->idReg2(), size, true);
10913 imm = emitGetInsSC(id);
10914 bmi.immNRS = (unsigned)imm;
10921 emitDispImm(bmi.immR, true);
10922 emitDispImm(bmi.immS, false);
10928 emitDispImm(getBitWidth(size) - bmi.immR, true);
10929 emitDispImm(bmi.immS + 1, false);
10935 emitDispImm(bmi.immR, true);
10936 emitDispImm(bmi.immS - bmi.immR + 1, false);
10942 emitDispImm(imm, false);
10946 assert(!"Unexpected instruction in IF_DI_2D");
10951 case IF_DI_1F: // DI_1F X..........iiiii cccc..nnnnn.nzcv Rn imm5 nzcv cond
10952 emitDispReg(id->idReg1(), size, true);
10953 cfi.immCFVal = (unsigned)emitGetInsSC(id);
10954 emitDispImm(cfi.imm5, true);
10955 emitDispFlags(cfi.flags);
10957 emitDispCond(cfi.cond);
10960 case IF_DR_1D: // DR_1D X............... cccc.......mmmmm Rd cond
10961 emitDispReg(id->idReg1(), size, true);
10962 cfi.immCFVal = (unsigned)emitGetInsSC(id);
10963 emitDispCond(cfi.cond);
10966 case IF_DR_2A: // DR_2A X..........mmmmm ......nnnnn..... Rn Rm
10967 emitDispReg(id->idReg1(), size, true);
10968 emitDispReg(id->idReg2(), size, false);
10971 case IF_DR_2B: // DR_2B X.......sh.mmmmm ssssssnnnnn..... Rn Rm {LSL,LSR,ASR,ROR} imm(0-63)
10972 emitDispReg(id->idReg1(), size, true);
10973 emitDispShiftedReg(id->idReg2(), id->idInsOpt(), emitGetInsSC(id), size);
10976 case IF_DR_2C: // DR_2C X..........mmmmm ooosssnnnnn..... Rn Rm ext(Rm) LSL imm(0-4)
10977 emitDispReg(encodingZRtoSP(id->idReg1()), size, true);
10978 imm = emitGetInsSC(id);
10979 emitDispExtendReg(id->idReg2(), id->idInsOpt(), imm);
10982 case IF_DR_2D: // DR_2D X..........nnnnn cccc..nnnnnddddd Rd Rn cond
10983 emitDispReg(id->idReg1(), size, true);
10984 emitDispReg(id->idReg2(), size, true);
10985 cfi.immCFVal = (unsigned)emitGetInsSC(id);
10986 emitDispCond(cfi.cond);
10989 case IF_DR_2E: // DR_2E X..........mmmmm ...........ddddd Rd Rm
10990 emitDispReg(id->idReg1(), size, true);
10991 emitDispReg(id->idReg2(), size, false);
10994 case IF_DR_2F: // DR_2F X.......sh.mmmmm ssssss.....ddddd Rd Rm {LSL,LSR,ASR} imm(0-63)
10995 emitDispReg(id->idReg1(), size, true);
10996 emitDispShiftedReg(id->idReg2(), id->idInsOpt(), emitGetInsSC(id), size);
10999 case IF_DR_2G: // DR_2G X............... ......nnnnnddddd Rd Rn
11000 emitDispReg(encodingZRtoSP(id->idReg1()), size, true);
11001 emitDispReg(encodingZRtoSP(id->idReg2()), size, false);
11004 case IF_DR_2H: // DR_2H X........X...... ......nnnnnddddd Rd Rn
11005 emitDispReg(id->idReg1(), size, true);
11006 emitDispReg(id->idReg2(), size, false);
11009 case IF_DR_2I: // DR_2I X..........mmmmm cccc..nnnnn.nzcv Rn Rm nzcv cond
11010 emitDispReg(id->idReg1(), size, true);
11011 emitDispReg(id->idReg2(), size, true);
11012 cfi.immCFVal = (unsigned)emitGetInsSC(id);
11013 emitDispFlags(cfi.flags);
11015 emitDispCond(cfi.cond);
11018 case IF_DR_3A: // DR_3A X..........mmmmm ......nnnnnmmmmm Rd Rn Rm
11019 if ((ins == INS_add) || (ins == INS_sub))
11021 emitDispReg(encodingZRtoSP(id->idReg1()), size, true);
11022 emitDispReg(encodingZRtoSP(id->idReg2()), size, true);
11024 else if ((ins == INS_smull) || (ins == INS_smulh))
11026 // Rd is always 8 bytes
11027 emitDispReg(id->idReg1(), EA_8BYTE, true);
11029 // Rn, Rm effective size depends on instruction type
11030 size = (ins == INS_smulh) ? EA_8BYTE : EA_4BYTE;
11031 emitDispReg(id->idReg2(), size, true);
11035 emitDispReg(id->idReg1(), size, true);
11036 emitDispReg(id->idReg2(), size, true);
11038 if (id->idIsLclVar())
11040 emitDispReg(codeGen->rsGetRsvdReg(), size, false);
11044 emitDispReg(id->idReg3(), size, false);
11049 case IF_DR_3B: // DR_3B X.......sh.mmmmm ssssssnnnnnddddd Rd Rn Rm {LSL,LSR,ASR} imm(0-63)
11050 emitDispReg(id->idReg1(), size, true);
11051 emitDispReg(id->idReg2(), size, true);
11052 emitDispShiftedReg(id->idReg3(), id->idInsOpt(), emitGetInsSC(id), size);
11055 case IF_DR_3C: // DR_3C X..........mmmmm ooosssnnnnnddddd Rd Rn Rm ext(Rm) LSL imm(0-4)
11056 emitDispReg(encodingZRtoSP(id->idReg1()), size, true);
11057 emitDispReg(encodingZRtoSP(id->idReg2()), size, true);
11058 imm = emitGetInsSC(id);
11059 emitDispExtendReg(id->idReg3(), id->idInsOpt(), imm);
11062 case IF_DR_3D: // DR_3D X..........mmmmm cccc..nnnnnmmmmm Rd Rn Rm cond
11063 emitDispReg(id->idReg1(), size, true);
11064 emitDispReg(id->idReg2(), size, true);
11065 emitDispReg(id->idReg3(), size, true);
11066 cfi.immCFVal = (unsigned)emitGetInsSC(id);
11067 emitDispCond(cfi.cond);
11070 case IF_DR_3E: // DR_3E X........X.mmmmm ssssssnnnnnddddd Rd Rn Rm imm(0-63)
11071 emitDispReg(id->idReg1(), size, true);
11072 emitDispReg(id->idReg2(), size, true);
11073 emitDispReg(id->idReg3(), size, true);
11074 emitDispImm(emitGetInsSC(id), false);
11077 case IF_DR_4A: // DR_4A X..........mmmmm .aaaaannnnnmmmmm Rd Rn Rm Ra
11078 emitDispReg(id->idReg1(), size, true);
11079 emitDispReg(id->idReg2(), size, true);
11080 emitDispReg(id->idReg3(), size, true);
11081 emitDispReg(id->idReg4(), size, false);
11084 case IF_DV_1A: // DV_1A .........X.iiiii iii........ddddd Vd imm8 (fmov - immediate scalar)
11085 elemsize = id->idOpSize();
11086 emitDispReg(id->idReg1(), elemsize, true);
11087 emitDispFloatImm(emitGetInsSC(id));
11090 case IF_DV_1B: // DV_1B .QX..........iii cmod..iiiiiddddd Vd imm8 (immediate vector)
11091 imm = emitGetInsSC(id) & 0x0ff;
11092 immShift = (emitGetInsSC(id) & 0x700) >> 8;
11093 hasShift = (immShift != 0);
11094 elemsize = optGetElemsize(id->idInsOpt());
11095 if (id->idInsOpt() == INS_OPTS_1D)
11097 assert(elemsize == size);
11098 emitDispReg(id->idReg1(), size, true);
11102 emitDispVectorReg(id->idReg1(), id->idInsOpt(), true);
11104 if (ins == INS_fmov)
11106 emitDispFloatImm(imm);
11107 assert(hasShift == false);
11111 if (elemsize == EA_8BYTE)
11113 assert(ins == INS_movi);
11115 const ssize_t mask8 = 0xFF;
11116 for (unsigned b = 0; b < 8; b++)
11118 if (imm & (1 << b))
11120 imm64 |= (mask8 << (b * 8));
11123 emitDispImm(imm64, hasShift, true);
11127 emitDispImm(imm, hasShift, true);
11131 insOpts opt = (immShift & 0x4) ? INS_OPTS_MSL : INS_OPTS_LSL;
11132 unsigned shift = (immShift & 0x3) * 8;
11133 emitDispShiftOpts(opt);
11134 emitDispImm(shift, false);
11139 case IF_DV_1C: // DV_1C .........X...... ......nnnnn..... Vn #0.0 (fcmp - with zero)
11140 elemsize = id->idOpSize();
11141 emitDispReg(id->idReg1(), elemsize, true);
11142 emitDispFloatZero();
11145 case IF_DV_2A: // DV_2A .Q.......X...... ......nnnnnddddd Vd Vn (fabs, fcvt - vector)
11146 case IF_DV_2M: // DV_2M .Q......XX...... ......nnnnnddddd Vd Vn (abs, neg - vector)
11147 emitDispVectorReg(id->idReg1(), id->idInsOpt(), true);
11148 emitDispVectorReg(id->idReg2(), id->idInsOpt(), false);
11151 case IF_DV_2N: // DV_2N .........iiiiiii ......nnnnnddddd Vd Vn imm (shift - scalar)
11152 elemsize = id->idOpSize();
11153 emitDispReg(id->idReg1(), elemsize, true);
11154 emitDispReg(id->idReg2(), elemsize, true);
11155 emitDispImm(emitGetInsSC(id), false);
11158 case IF_DV_2O: // DV_2O .Q.......iiiiiii ......nnnnnddddd Vd Vn imm (shift - vector)
11159 imm = emitGetInsSC(id);
11160 // Do we have a sxtl or uxtl instruction?
11161 isExtendAlias = ((ins == INS_sxtl) || (ins == INS_sxtl2) || (ins == INS_uxtl) || (ins == INS_uxtl2));
11162 code = emitInsCode(ins, fmt);
11163 if (code & 0x00008000) // widen/narrow opcodes
11165 if (code & 0x00002000) // SHL opcodes
11167 emitDispVectorReg(id->idReg1(), optWidenElemsize(id->idInsOpt()), true);
11168 emitDispVectorReg(id->idReg2(), id->idInsOpt(), !isExtendAlias);
11170 else // SHR opcodes
11172 emitDispVectorReg(id->idReg1(), id->idInsOpt(), true);
11173 emitDispVectorReg(id->idReg2(), optWidenElemsize(id->idInsOpt()), !isExtendAlias);
11178 emitDispVectorReg(id->idReg1(), id->idInsOpt(), true);
11179 emitDispVectorReg(id->idReg2(), id->idInsOpt(), !isExtendAlias);
11181 // Print the immediate unless we have a sxtl or uxtl instruction
11182 if (!isExtendAlias)
11184 emitDispImm(imm, false);
11188 case IF_DV_2B: // DV_2B .Q.........iiiii ......nnnnnddddd Rd Vn[] (umov/smov - to general)
11189 srcsize = id->idOpSize();
11190 index = emitGetInsSC(id);
11191 if (ins == INS_smov)
11193 dstsize = EA_8BYTE;
11195 else // INS_umov or INS_mov
11197 dstsize = (srcsize == EA_8BYTE) ? EA_8BYTE : EA_4BYTE;
11199 emitDispReg(id->idReg1(), dstsize, true);
11200 emitDispVectorRegIndex(id->idReg2(), srcsize, index, false);
11203 case IF_DV_2C: // DV_2C .Q.........iiiii ......nnnnnddddd Vd Rn (dup/ins - vector from general)
11204 if (ins == INS_dup)
11206 datasize = id->idOpSize();
11207 assert(isValidVectorDatasize(datasize));
11208 assert(isValidArrangement(datasize, id->idInsOpt()));
11209 elemsize = optGetElemsize(id->idInsOpt());
11210 emitDispVectorReg(id->idReg1(), id->idInsOpt(), true);
11214 elemsize = id->idOpSize();
11215 index = emitGetInsSC(id);
11216 assert(isValidVectorElemsize(elemsize));
11217 emitDispVectorRegIndex(id->idReg1(), elemsize, index, true);
11219 emitDispReg(id->idReg2(), (elemsize == EA_8BYTE) ? EA_8BYTE : EA_4BYTE, false);
11222 case IF_DV_2D: // DV_2D .Q.........iiiii ......nnnnnddddd Vd Vn[] (dup - vector)
11223 datasize = id->idOpSize();
11224 assert(isValidVectorDatasize(datasize));
11225 assert(isValidArrangement(datasize, id->idInsOpt()));
11226 elemsize = optGetElemsize(id->idInsOpt());
11227 index = emitGetInsSC(id);
11228 emitDispVectorReg(id->idReg1(), id->idInsOpt(), true);
11229 emitDispVectorRegIndex(id->idReg2(), elemsize, index, false);
11232 case IF_DV_2E: // DV_2E ...........iiiii ......nnnnnddddd Vd Vn[] (dup - scalar)
11233 elemsize = id->idOpSize();
11234 index = emitGetInsSC(id);
11235 emitDispReg(id->idReg1(), elemsize, true);
11236 emitDispVectorRegIndex(id->idReg2(), elemsize, index, false);
11239 case IF_DV_2F: // DV_2F ...........iiiii .jjjj.nnnnnddddd Vd[] Vn[] (ins - element)
11240 imm = emitGetInsSC(id);
11241 index = (imm >> 4) & 0xf;
11242 index2 = imm & 0xf;
11243 elemsize = id->idOpSize();
11244 emitDispVectorRegIndex(id->idReg1(), elemsize, index, true);
11245 emitDispVectorRegIndex(id->idReg2(), elemsize, index2, false);
11248 case IF_DV_2G: // DV_2G .........X...... ......nnnnnddddd Vd Vn (fmov, fcvtXX - register)
11249 case IF_DV_2K: // DV_2K .........X.mmmmm ......nnnnn..... Vn Vm (fcmp)
11250 case IF_DV_2L: // DV_2L ........XX...... ......nnnnnddddd Vd Vn (abs, neg - scalar)
11251 elemsize = id->idOpSize();
11252 emitDispReg(id->idReg1(), elemsize, true);
11253 emitDispReg(id->idReg2(), elemsize, false);
11256 case IF_DV_2H: // DV_2H X........X...... ......nnnnnddddd Rd Vn (fmov, fcvtXX - to general)
11257 case IF_DV_2I: // DV_2I X........X...... ......nnnnnddddd Vd Rn (fmov, Xcvtf - from general)
11258 case IF_DV_2J: // DV_2J ........SS.....D D.....nnnnnddddd Vd Vn (fcvt)
11259 dstsize = optGetDstsize(id->idInsOpt());
11260 srcsize = optGetSrcsize(id->idInsOpt());
11262 emitDispReg(id->idReg1(), dstsize, true);
11263 emitDispReg(id->idReg2(), srcsize, false);
11266 case IF_DV_3A: // DV_3A .Q......XX.mmmmm ......nnnnnddddd Vd Vn Vm (vector)
11267 case IF_DV_3B: // DV_3B .Q.........mmmmm ......nnnnnddddd Vd Vn Vm (vector)
11268 emitDispVectorReg(id->idReg1(), id->idInsOpt(), true);
11269 emitDispVectorReg(id->idReg2(), id->idInsOpt(), true);
11270 emitDispVectorReg(id->idReg3(), id->idInsOpt(), false);
11273 case IF_DV_3C: // DV_3C .Q.........mmmmm ......nnnnnddddd Vd Vn Vm (vector)
11274 emitDispVectorReg(id->idReg1(), id->idInsOpt(), true);
11275 if (ins != INS_mov)
11277 emitDispVectorReg(id->idReg2(), id->idInsOpt(), true);
11279 emitDispVectorReg(id->idReg3(), id->idInsOpt(), false);
11282 case IF_DV_3AI: // DV_3AI .Q......XXLMmmmm ....H.nnnnnddddd Vd Vn Vm[] (vector by elem)
11283 case IF_DV_3BI: // DV_3BI .Q........Lmmmmm ....H.nnnnnddddd Vd Vn Vm[] (vector by elem)
11284 emitDispVectorReg(id->idReg1(), id->idInsOpt(), true);
11285 emitDispVectorReg(id->idReg2(), id->idInsOpt(), true);
11286 elemsize = optGetElemsize(id->idInsOpt());
11287 emitDispVectorRegIndex(id->idReg3(), elemsize, emitGetInsSC(id), false);
11290 case IF_DV_3D: // DV_3D .........X.mmmmm ......nnnnnddddd Vd Vn Vm (scalar)
11291 case IF_DV_3E: // DV_3E ...........mmmmm ......nnnnnddddd Vd Vn Vm (scalar)
11292 emitDispReg(id->idReg1(), size, true);
11293 emitDispReg(id->idReg2(), size, true);
11294 emitDispReg(id->idReg3(), size, false);
11297 case IF_DV_3DI: // DV_3DI .........XLmmmmm ....H.nnnnnddddd Vd Vn Vm[] (scalar by elem)
11298 emitDispReg(id->idReg1(), size, true);
11299 emitDispReg(id->idReg2(), size, true);
11301 emitDispVectorRegIndex(id->idReg3(), elemsize, emitGetInsSC(id), false);
11304 case IF_DV_4A: // DV_4A .........X.mmmmm .aaaaannnnnddddd Vd Va Vn Vm (scalar)
11305 emitDispReg(id->idReg1(), size, true);
11306 emitDispReg(id->idReg2(), size, true);
11307 emitDispReg(id->idReg3(), size, true);
11308 emitDispReg(id->idReg4(), size, false);
11311 case IF_SN_0A: // SN_0A ................ ................
11314 case IF_SI_0A: // SI_0A ...........iiiii iiiiiiiiiii..... imm16
11315 emitDispImm(emitGetInsSC(id), false);
11318 case IF_SI_0B: // SI_0B ................ ....bbbb........ imm4 - barrier
11319 emitDispBarrier((insBarrier)emitGetInsSC(id));
11323 printf("unexpected format %s", emitIfName(id->idInsFmt()));
11324 assert(!"unexpectedFormat");
11328 if (id->idDebugOnlyInfo()->idVarRefOffs)
11331 emitDispFrameRef(id->idAddr()->iiaLclVar.lvaVarNum(), id->idAddr()->iiaLclVar.lvaOffset(),
11332 id->idDebugOnlyInfo()->idVarRefOffs, asmfm);
11338 /*****************************************************************************
11340 * Display a stack frame reference.
11343 void emitter::emitDispFrameRef(int varx, int disp, int offs, bool asmfm)
11348 printf("TEMP_%02u", -varx);
11350 emitComp->gtDispLclVar(+varx, false);
11353 printf("-0x%02x", -disp);
11355 printf("+0x%02x", +disp);
11359 if (varx >= 0 && emitComp->opts.varNames)
11362 const char* varName;
11364 assert((unsigned)varx < emitComp->lvaCount);
11365 varDsc = emitComp->lvaTable + varx;
11366 varName = emitComp->compLocalVarName(varx, offs);
11370 printf("'%s", varName);
11373 printf("-%d", -disp);
11375 printf("+%d", +disp);
11384 // Generate code for a load or store operation with a potentially complex addressing mode
11385 // This method handles the case of a GT_IND with contained GT_LEA op1 of the x86 form [base + index*sccale + offset]
11386 // Since Arm64 does not directly support this complex of an addressing mode
11387 // we may generates up to three instructions for this for Arm64
11389 void emitter::emitInsLoadStoreOp(instruction ins, emitAttr attr, regNumber dataReg, GenTreeIndir* indir)
11391 emitAttr ldstAttr = isVectorRegister(dataReg) ? attr : emitInsAdjustLoadStoreAttr(ins, attr);
11393 GenTree* addr = indir->Addr();
11395 if (addr->isContained())
11397 assert(addr->OperGet() == GT_LCL_VAR_ADDR || addr->OperGet() == GT_LEA);
11402 if (addr->OperGet() == GT_LEA)
11404 offset = addr->AsAddrMode()->Offset();
11405 if (addr->AsAddrMode()->gtScale > 0)
11407 assert(isPow2(addr->AsAddrMode()->gtScale));
11408 BitScanForward(&lsl, addr->AsAddrMode()->gtScale);
11412 GenTree* memBase = indir->Base();
11414 if (indir->HasIndex())
11416 GenTree* index = indir->Index();
11420 regNumber tmpReg = indir->GetSingleTempReg();
11422 emitAttr addType = varTypeIsGC(memBase) ? EA_BYREF : EA_PTRSIZE;
11424 if (emitIns_valid_imm_for_add(offset, EA_8BYTE))
11428 // Generate code to set tmpReg = base + index*scale
11429 emitIns_R_R_R_I(INS_add, addType, tmpReg, memBase->gtRegNum, index->gtRegNum, lsl,
11434 // Generate code to set tmpReg = base + index
11435 emitIns_R_R_R(INS_add, addType, tmpReg, memBase->gtRegNum, index->gtRegNum);
11438 noway_assert(emitInsIsLoad(ins) || (tmpReg != dataReg));
11440 // Then load/store dataReg from/to [tmpReg + offset]
11441 emitIns_R_R_I(ins, ldstAttr, dataReg, tmpReg, offset);
11443 else // large offset
11445 // First load/store tmpReg with the large offset constant
11446 codeGen->instGen_Set_Reg_To_Imm(EA_PTRSIZE, tmpReg, offset);
11447 // Then add the base register
11449 emitIns_R_R_R(INS_add, addType, tmpReg, tmpReg, memBase->gtRegNum);
11451 noway_assert(emitInsIsLoad(ins) || (tmpReg != dataReg));
11452 noway_assert(tmpReg != index->gtRegNum);
11454 // Then load/store dataReg from/to [tmpReg + index*scale]
11455 emitIns_R_R_R_I(ins, ldstAttr, dataReg, tmpReg, index->gtRegNum, lsl, INS_OPTS_LSL);
11458 else // (offset == 0)
11462 // Then load/store dataReg from/to [memBase + index*scale]
11463 emitIns_R_R_R_I(ins, ldstAttr, dataReg, memBase->gtRegNum, index->gtRegNum, lsl, INS_OPTS_LSL);
11467 // Then load/store dataReg from/to [memBase + index]
11468 emitIns_R_R_R(ins, ldstAttr, dataReg, memBase->gtRegNum, index->gtRegNum);
11472 else // no Index register
11474 if (emitIns_valid_imm_for_ldst_offset(offset, EA_SIZE(attr)))
11476 // Then load/store dataReg from/to [memBase + offset]
11477 emitIns_R_R_I(ins, ldstAttr, dataReg, memBase->gtRegNum, offset);
11481 // We require a tmpReg to hold the offset
11482 regNumber tmpReg = indir->GetSingleTempReg();
11484 // First load/store tmpReg with the large offset constant
11485 codeGen->instGen_Set_Reg_To_Imm(EA_PTRSIZE, tmpReg, offset);
11487 // Then load/store dataReg from/to [memBase + tmpReg]
11488 emitIns_R_R_R(ins, ldstAttr, dataReg, memBase->gtRegNum, tmpReg);
11492 else // addr is not contained, so we evaluate it into a register
11494 // Then load/store dataReg from/to [addrReg]
11495 emitIns_R_R(ins, ldstAttr, dataReg, addr->gtRegNum);
11499 // The callee must call genConsumeReg() for any non-contained srcs
11500 // and genProduceReg() for any non-contained dsts.
11502 regNumber emitter::emitInsBinary(instruction ins, emitAttr attr, GenTree* dst, GenTree* src)
11504 regNumber result = REG_NA;
11506 // dst can only be a reg
11507 assert(!dst->isContained());
11509 // src can be immed or reg
11510 assert(!src->isContained() || src->isContainedIntOrIImmed());
11512 // find immed (if any) - it cannot be a dst
11513 GenTreeIntConCommon* intConst = nullptr;
11514 if (src->isContainedIntOrIImmed())
11516 intConst = src->AsIntConCommon();
11521 emitIns_R_I(ins, attr, dst->gtRegNum, intConst->IconValue());
11522 return dst->gtRegNum;
11526 emitIns_R_R(ins, attr, dst->gtRegNum, src->gtRegNum);
11527 return dst->gtRegNum;
11531 // The callee must call genConsumeReg() for any non-contained srcs
11532 // and genProduceReg() for any non-contained dsts.
11534 regNumber emitter::emitInsTernary(instruction ins, emitAttr attr, GenTree* dst, GenTree* src1, GenTree* src2)
11536 regNumber result = REG_NA;
11538 // dst can only be a reg
11539 assert(!dst->isContained());
11541 // find immed (if any) - it cannot be a dst
11542 // Only one src can be an int.
11543 GenTreeIntConCommon* intConst = nullptr;
11544 GenTree* nonIntReg = nullptr;
11546 if (varTypeIsFloating(dst))
11548 // src1 can only be a reg
11549 assert(!src1->isContained());
11550 // src2 can only be a reg
11551 assert(!src2->isContained());
11553 else // not floating point
11555 // src2 can be immed or reg
11556 assert(!src2->isContained() || src2->isContainedIntOrIImmed());
11558 // Check src2 first as we can always allow it to be a contained immediate
11559 if (src2->isContainedIntOrIImmed())
11561 intConst = src2->AsIntConCommon();
11564 // Only for commutative operations do we check src1 and allow it to be a contained immediate
11565 else if (dst->OperIsCommutative())
11567 // src1 can be immed or reg
11568 assert(!src1->isContained() || src1->isContainedIntOrIImmed());
11570 // Check src1 and allow it to be a contained immediate
11571 if (src1->isContainedIntOrIImmed())
11573 assert(!src2->isContainedIntOrIImmed());
11574 intConst = src1->AsIntConCommon();
11580 // src1 can only be a reg
11581 assert(!src1->isContained());
11585 bool isMulOverflow = false;
11586 if (dst->gtOverflowEx())
11588 if ((ins == INS_add) || (ins == INS_adds))
11592 else if ((ins == INS_sub) || (ins == INS_subs))
11596 else if (ins == INS_mul)
11598 isMulOverflow = true;
11599 assert(intConst == nullptr); // overflow format doesn't support an int constant operand
11603 assert(!"Invalid ins for overflow check");
11606 if (intConst != nullptr)
11608 emitIns_R_R_I(ins, attr, dst->gtRegNum, nonIntReg->gtRegNum, intConst->IconValue());
11614 regNumber extraReg = dst->GetSingleTempReg();
11615 assert(extraReg != dst->gtRegNum);
11617 if ((dst->gtFlags & GTF_UNSIGNED) != 0)
11619 if (attr == EA_4BYTE)
11621 // Compute 8 byte results from 4 byte by 4 byte multiplication.
11622 emitIns_R_R_R(INS_umull, EA_8BYTE, dst->gtRegNum, src1->gtRegNum, src2->gtRegNum);
11624 // Get the high result by shifting dst.
11625 emitIns_R_R_I(INS_lsr, EA_8BYTE, extraReg, dst->gtRegNum, 32);
11629 assert(attr == EA_8BYTE);
11630 // Compute the high result.
11631 emitIns_R_R_R(INS_umulh, attr, extraReg, src1->gtRegNum, src2->gtRegNum);
11633 // Now multiply without skewing the high result.
11634 emitIns_R_R_R(ins, attr, dst->gtRegNum, src1->gtRegNum, src2->gtRegNum);
11637 // zero-sign bit comparison to detect overflow.
11638 emitIns_R_I(INS_cmp, attr, extraReg, 0);
11643 if (attr == EA_4BYTE)
11645 // Compute 8 byte results from 4 byte by 4 byte multiplication.
11646 emitIns_R_R_R(INS_smull, EA_8BYTE, dst->gtRegNum, src1->gtRegNum, src2->gtRegNum);
11648 // Get the high result by shifting dst.
11649 emitIns_R_R_I(INS_lsr, EA_8BYTE, extraReg, dst->gtRegNum, 32);
11655 assert(attr == EA_8BYTE);
11656 // Save the high result in a temporary register.
11657 emitIns_R_R_R(INS_smulh, attr, extraReg, src1->gtRegNum, src2->gtRegNum);
11659 // Now multiply without skewing the high result.
11660 emitIns_R_R_R(ins, attr, dst->gtRegNum, src1->gtRegNum, src2->gtRegNum);
11665 // Sign bit comparison to detect overflow.
11666 emitIns_R_R_I(INS_cmp, attr, extraReg, dst->gtRegNum, bitShift, INS_OPTS_ASR);
11671 // We can just multiply.
11672 emitIns_R_R_R(ins, attr, dst->gtRegNum, src1->gtRegNum, src2->gtRegNum);
11676 if (dst->gtOverflowEx())
11678 assert(!varTypeIsFloating(dst));
11679 codeGen->genCheckOverflow(dst);
11682 return dst->gtRegNum;
11685 #endif // defined(_TARGET_ARM64_)