1 //===- CodeGenInstruction.cpp - CodeGen Instruction Class Wrapper ---------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the CodeGenInstruction class.
12 //===----------------------------------------------------------------------===//
14 #include "CodeGenInstruction.h"
15 #include "CodeGenTarget.h"
16 #include "llvm/ADT/STLExtras.h"
17 #include "llvm/ADT/StringExtras.h"
18 #include "llvm/ADT/StringMap.h"
19 #include "llvm/TableGen/Error.h"
20 #include "llvm/TableGen/Record.h"
24 //===----------------------------------------------------------------------===//
25 // CGIOperandList Implementation
26 //===----------------------------------------------------------------------===//
28 CGIOperandList::CGIOperandList(Record *R) : TheDef(R) {
30 hasOptionalDef = false;
33 DagInit *OutDI = R->getValueAsDag("OutOperandList");
35 if (DefInit *Init = dyn_cast<DefInit>(OutDI->getOperator())) {
36 if (Init->getDef()->getName() != "outs")
37 PrintFatalError(R->getName() + ": invalid def name for output list: use 'outs'");
39 PrintFatalError(R->getName() + ": invalid output list: use 'outs'");
41 NumDefs = OutDI->getNumArgs();
43 DagInit *InDI = R->getValueAsDag("InOperandList");
44 if (DefInit *Init = dyn_cast<DefInit>(InDI->getOperator())) {
45 if (Init->getDef()->getName() != "ins")
46 PrintFatalError(R->getName() + ": invalid def name for input list: use 'ins'");
48 PrintFatalError(R->getName() + ": invalid input list: use 'ins'");
50 unsigned MIOperandNo = 0;
51 std::set<std::string> OperandNames;
52 for (unsigned i = 0, e = InDI->getNumArgs()+OutDI->getNumArgs(); i != e; ++i){
56 ArgInit = OutDI->getArg(i);
57 ArgName = OutDI->getArgName(i);
59 ArgInit = InDI->getArg(i-NumDefs);
60 ArgName = InDI->getArgName(i-NumDefs);
63 DefInit *Arg = dyn_cast<DefInit>(ArgInit);
65 PrintFatalError("Illegal operand for the '" + R->getName() + "' instruction!");
67 Record *Rec = Arg->getDef();
68 std::string PrintMethod = "printOperand";
69 std::string EncoderMethod;
70 std::string OperandType = "OPERAND_UNKNOWN";
72 DagInit *MIOpInfo = 0;
73 if (Rec->isSubClassOf("RegisterOperand")) {
74 PrintMethod = Rec->getValueAsString("PrintMethod");
75 } else if (Rec->isSubClassOf("Operand")) {
76 PrintMethod = Rec->getValueAsString("PrintMethod");
77 OperandType = Rec->getValueAsString("OperandType");
78 // If there is an explicit encoder method, use it.
79 EncoderMethod = Rec->getValueAsString("EncoderMethod");
80 MIOpInfo = Rec->getValueAsDag("MIOperandInfo");
82 // Verify that MIOpInfo has an 'ops' root value.
83 if (!isa<DefInit>(MIOpInfo->getOperator()) ||
84 cast<DefInit>(MIOpInfo->getOperator())->getDef()->getName() != "ops")
85 PrintFatalError("Bad value for MIOperandInfo in operand '" + Rec->getName() +
88 // If we have MIOpInfo, then we have #operands equal to number of entries
90 if (unsigned NumArgs = MIOpInfo->getNumArgs())
93 if (Rec->isSubClassOf("PredicateOperand"))
95 else if (Rec->isSubClassOf("OptionalDefOperand"))
96 hasOptionalDef = true;
97 } else if (Rec->getName() == "variable_ops") {
100 } else if (Rec->isSubClassOf("RegisterClass")) {
101 OperandType = "OPERAND_REGISTER";
102 } else if (!Rec->isSubClassOf("PointerLikeRegClass") &&
103 !Rec->isSubClassOf("unknown_class"))
104 PrintFatalError("Unknown operand class '" + Rec->getName() +
105 "' in '" + R->getName() + "' instruction!");
107 // Check that the operand has a name and that it's unique.
109 PrintFatalError("In instruction '" + R->getName() + "', operand #" + utostr(i) +
111 if (!OperandNames.insert(ArgName).second)
112 PrintFatalError("In instruction '" + R->getName() + "', operand #" + utostr(i) +
113 " has the same name as a previous operand!");
115 OperandList.push_back(OperandInfo(Rec, ArgName, PrintMethod, EncoderMethod,
116 OperandType, MIOperandNo, NumOps,
118 MIOperandNo += NumOps;
122 // Make sure the constraints list for each operand is large enough to hold
123 // constraint info, even if none is present.
124 for (unsigned i = 0, e = OperandList.size(); i != e; ++i)
125 OperandList[i].Constraints.resize(OperandList[i].MINumOperands);
129 /// getOperandNamed - Return the index of the operand with the specified
130 /// non-empty name. If the instruction does not have an operand with the
131 /// specified name, abort.
133 unsigned CGIOperandList::getOperandNamed(StringRef Name) const {
135 if (hasOperandNamed(Name, OpIdx)) return OpIdx;
136 PrintFatalError("'" + TheDef->getName() + "' does not have an operand named '$" +
140 /// hasOperandNamed - Query whether the instruction has an operand of the
141 /// given name. If so, return true and set OpIdx to the index of the
142 /// operand. Otherwise, return false.
143 bool CGIOperandList::hasOperandNamed(StringRef Name, unsigned &OpIdx) const {
144 assert(!Name.empty() && "Cannot search for operand with no name!");
145 for (unsigned i = 0, e = OperandList.size(); i != e; ++i)
146 if (OperandList[i].Name == Name) {
153 std::pair<unsigned,unsigned>
154 CGIOperandList::ParseOperandName(const std::string &Op, bool AllowWholeOp) {
155 if (Op.empty() || Op[0] != '$')
156 PrintFatalError(TheDef->getName() + ": Illegal operand name: '" + Op + "'");
158 std::string OpName = Op.substr(1);
159 std::string SubOpName;
161 // Check to see if this is $foo.bar.
162 std::string::size_type DotIdx = OpName.find_first_of(".");
163 if (DotIdx != std::string::npos) {
164 SubOpName = OpName.substr(DotIdx+1);
165 if (SubOpName.empty())
166 PrintFatalError(TheDef->getName() + ": illegal empty suboperand name in '" +Op +"'");
167 OpName = OpName.substr(0, DotIdx);
170 unsigned OpIdx = getOperandNamed(OpName);
172 if (SubOpName.empty()) { // If no suboperand name was specified:
173 // If one was needed, throw.
174 if (OperandList[OpIdx].MINumOperands > 1 && !AllowWholeOp &&
176 PrintFatalError(TheDef->getName() + ": Illegal to refer to"
177 " whole operand part of complex operand '" + Op + "'");
179 // Otherwise, return the operand.
180 return std::make_pair(OpIdx, 0U);
183 // Find the suboperand number involved.
184 DagInit *MIOpInfo = OperandList[OpIdx].MIOperandInfo;
186 PrintFatalError(TheDef->getName() + ": unknown suboperand name in '" + Op + "'");
188 // Find the operand with the right name.
189 for (unsigned i = 0, e = MIOpInfo->getNumArgs(); i != e; ++i)
190 if (MIOpInfo->getArgName(i) == SubOpName)
191 return std::make_pair(OpIdx, i);
193 // Otherwise, didn't find it!
194 PrintFatalError(TheDef->getName() + ": unknown suboperand name in '" + Op + "'");
195 return std::make_pair(0U, 0U);
198 static void ParseConstraint(const std::string &CStr, CGIOperandList &Ops) {
199 // EARLY_CLOBBER: @early $reg
200 std::string::size_type wpos = CStr.find_first_of(" \t");
201 std::string::size_type start = CStr.find_first_not_of(" \t");
202 std::string Tok = CStr.substr(start, wpos - start);
203 if (Tok == "@earlyclobber") {
204 std::string Name = CStr.substr(wpos+1);
205 wpos = Name.find_first_not_of(" \t");
206 if (wpos == std::string::npos)
207 PrintFatalError("Illegal format for @earlyclobber constraint: '" + CStr + "'");
208 Name = Name.substr(wpos);
209 std::pair<unsigned,unsigned> Op = Ops.ParseOperandName(Name, false);
211 // Build the string for the operand
212 if (!Ops[Op.first].Constraints[Op.second].isNone())
213 PrintFatalError("Operand '" + Name + "' cannot have multiple constraints!");
214 Ops[Op.first].Constraints[Op.second] =
215 CGIOperandList::ConstraintInfo::getEarlyClobber();
219 // Only other constraint is "TIED_TO" for now.
220 std::string::size_type pos = CStr.find_first_of('=');
221 assert(pos != std::string::npos && "Unrecognized constraint");
222 start = CStr.find_first_not_of(" \t");
223 std::string Name = CStr.substr(start, pos - start);
225 // TIED_TO: $src1 = $dst
226 wpos = Name.find_first_of(" \t");
227 if (wpos == std::string::npos)
228 PrintFatalError("Illegal format for tied-to constraint: '" + CStr + "'");
229 std::string DestOpName = Name.substr(0, wpos);
230 std::pair<unsigned,unsigned> DestOp = Ops.ParseOperandName(DestOpName, false);
232 Name = CStr.substr(pos+1);
233 wpos = Name.find_first_not_of(" \t");
234 if (wpos == std::string::npos)
235 PrintFatalError("Illegal format for tied-to constraint: '" + CStr + "'");
237 std::string SrcOpName = Name.substr(wpos);
238 std::pair<unsigned,unsigned> SrcOp = Ops.ParseOperandName(SrcOpName, false);
239 if (SrcOp > DestOp) {
240 std::swap(SrcOp, DestOp);
241 std::swap(SrcOpName, DestOpName);
244 unsigned FlatOpNo = Ops.getFlattenedOperandNumber(SrcOp);
246 if (!Ops[DestOp.first].Constraints[DestOp.second].isNone())
247 PrintFatalError("Operand '" + DestOpName +
248 "' cannot have multiple constraints!");
249 Ops[DestOp.first].Constraints[DestOp.second] =
250 CGIOperandList::ConstraintInfo::getTied(FlatOpNo);
253 static void ParseConstraints(const std::string &CStr, CGIOperandList &Ops) {
254 if (CStr.empty()) return;
256 const std::string delims(",");
257 std::string::size_type bidx, eidx;
259 bidx = CStr.find_first_not_of(delims);
260 while (bidx != std::string::npos) {
261 eidx = CStr.find_first_of(delims, bidx);
262 if (eidx == std::string::npos)
263 eidx = CStr.length();
265 ParseConstraint(CStr.substr(bidx, eidx - bidx), Ops);
266 bidx = CStr.find_first_not_of(delims, eidx);
270 void CGIOperandList::ProcessDisableEncoding(std::string DisableEncoding) {
272 std::pair<StringRef, StringRef> P = getToken(DisableEncoding, " ,\t");
273 std::string OpName = P.first;
274 DisableEncoding = P.second;
275 if (OpName.empty()) break;
277 // Figure out which operand this is.
278 std::pair<unsigned,unsigned> Op = ParseOperandName(OpName, false);
280 // Mark the operand as not-to-be encoded.
281 if (Op.second >= OperandList[Op.first].DoNotEncode.size())
282 OperandList[Op.first].DoNotEncode.resize(Op.second+1);
283 OperandList[Op.first].DoNotEncode[Op.second] = true;
288 //===----------------------------------------------------------------------===//
289 // CodeGenInstruction Implementation
290 //===----------------------------------------------------------------------===//
292 CodeGenInstruction::CodeGenInstruction(Record *R)
293 : TheDef(R), Operands(R), InferredFrom(0) {
294 Namespace = R->getValueAsString("Namespace");
295 AsmString = R->getValueAsString("AsmString");
297 isReturn = R->getValueAsBit("isReturn");
298 isBranch = R->getValueAsBit("isBranch");
299 isIndirectBranch = R->getValueAsBit("isIndirectBranch");
300 isCompare = R->getValueAsBit("isCompare");
301 isMoveImm = R->getValueAsBit("isMoveImm");
302 isBitcast = R->getValueAsBit("isBitcast");
303 isSelect = R->getValueAsBit("isSelect");
304 isBarrier = R->getValueAsBit("isBarrier");
305 isCall = R->getValueAsBit("isCall");
306 canFoldAsLoad = R->getValueAsBit("canFoldAsLoad");
307 isPredicable = Operands.isPredicable || R->getValueAsBit("isPredicable");
308 isConvertibleToThreeAddress = R->getValueAsBit("isConvertibleToThreeAddress");
309 isCommutable = R->getValueAsBit("isCommutable");
310 isTerminator = R->getValueAsBit("isTerminator");
311 isReMaterializable = R->getValueAsBit("isReMaterializable");
312 hasDelaySlot = R->getValueAsBit("hasDelaySlot");
313 usesCustomInserter = R->getValueAsBit("usesCustomInserter");
314 hasPostISelHook = R->getValueAsBit("hasPostISelHook");
315 hasCtrlDep = R->getValueAsBit("hasCtrlDep");
316 isNotDuplicable = R->getValueAsBit("isNotDuplicable");
318 mayLoad = R->getValueAsBitOrUnset("mayLoad", mayLoad_Unset);
319 mayStore = R->getValueAsBitOrUnset("mayStore", mayStore_Unset);
320 hasSideEffects = R->getValueAsBitOrUnset("hasSideEffects",
321 hasSideEffects_Unset);
322 neverHasSideEffects = R->getValueAsBit("neverHasSideEffects");
324 isAsCheapAsAMove = R->getValueAsBit("isAsCheapAsAMove");
325 hasExtraSrcRegAllocReq = R->getValueAsBit("hasExtraSrcRegAllocReq");
326 hasExtraDefRegAllocReq = R->getValueAsBit("hasExtraDefRegAllocReq");
327 isCodeGenOnly = R->getValueAsBit("isCodeGenOnly");
328 isPseudo = R->getValueAsBit("isPseudo");
329 ImplicitDefs = R->getValueAsListOfDefs("Defs");
330 ImplicitUses = R->getValueAsListOfDefs("Uses");
332 if (neverHasSideEffects + hasSideEffects > 1)
333 PrintFatalError(R->getName() + ": multiple conflicting side-effect flags set!");
335 // Parse Constraints.
336 ParseConstraints(R->getValueAsString("Constraints"), Operands);
338 // Parse the DisableEncoding field.
339 Operands.ProcessDisableEncoding(R->getValueAsString("DisableEncoding"));
342 /// HasOneImplicitDefWithKnownVT - If the instruction has at least one
343 /// implicit def and it has a known VT, return the VT, otherwise return
345 MVT::SimpleValueType CodeGenInstruction::
346 HasOneImplicitDefWithKnownVT(const CodeGenTarget &TargetInfo) const {
347 if (ImplicitDefs.empty()) return MVT::Other;
349 // Check to see if the first implicit def has a resolvable type.
350 Record *FirstImplicitDef = ImplicitDefs[0];
351 assert(FirstImplicitDef->isSubClassOf("Register"));
352 const std::vector<MVT::SimpleValueType> &RegVTs =
353 TargetInfo.getRegisterVTs(FirstImplicitDef);
354 if (RegVTs.size() == 1)
360 /// FlattenAsmStringVariants - Flatten the specified AsmString to only
361 /// include text from the specified variant, returning the new string.
362 std::string CodeGenInstruction::
363 FlattenAsmStringVariants(StringRef Cur, unsigned Variant) {
364 std::string Res = "";
367 // Find the start of the next variant string.
368 size_t VariantsStart = 0;
369 for (size_t e = Cur.size(); VariantsStart != e; ++VariantsStart)
370 if (Cur[VariantsStart] == '{' &&
371 (VariantsStart == 0 || (Cur[VariantsStart-1] != '$' &&
372 Cur[VariantsStart-1] != '\\')))
375 // Add the prefix to the result.
376 Res += Cur.slice(0, VariantsStart);
377 if (VariantsStart == Cur.size())
380 ++VariantsStart; // Skip the '{'.
382 // Scan to the end of the variants string.
383 size_t VariantsEnd = VariantsStart;
384 unsigned NestedBraces = 1;
385 for (size_t e = Cur.size(); VariantsEnd != e; ++VariantsEnd) {
386 if (Cur[VariantsEnd] == '}' && Cur[VariantsEnd-1] != '\\') {
387 if (--NestedBraces == 0)
389 } else if (Cur[VariantsEnd] == '{')
393 // Select the Nth variant (or empty).
394 StringRef Selection = Cur.slice(VariantsStart, VariantsEnd);
395 for (unsigned i = 0; i != Variant; ++i)
396 Selection = Selection.split('|').second;
397 Res += Selection.split('|').first;
399 assert(VariantsEnd != Cur.size() &&
400 "Unterminated variants in assembly string!");
401 Cur = Cur.substr(VariantsEnd + 1);
408 //===----------------------------------------------------------------------===//
409 /// CodeGenInstAlias Implementation
410 //===----------------------------------------------------------------------===//
412 /// tryAliasOpMatch - This is a helper function for the CodeGenInstAlias
413 /// constructor. It checks if an argument in an InstAlias pattern matches
414 /// the corresponding operand of the instruction. It returns true on a
415 /// successful match, with ResOp set to the result operand to be used.
416 bool CodeGenInstAlias::tryAliasOpMatch(DagInit *Result, unsigned AliasOpNo,
417 Record *InstOpRec, bool hasSubOps,
418 ArrayRef<SMLoc> Loc, CodeGenTarget &T,
419 ResultOperand &ResOp) {
420 Init *Arg = Result->getArg(AliasOpNo);
421 DefInit *ADI = dyn_cast<DefInit>(Arg);
423 if (ADI && ADI->getDef() == InstOpRec) {
424 // If the operand is a record, it must have a name, and the record type
425 // must match up with the instruction's argument type.
426 if (Result->getArgName(AliasOpNo).empty())
427 PrintFatalError(Loc, "result argument #" + utostr(AliasOpNo) +
428 " must have a name!");
429 ResOp = ResultOperand(Result->getArgName(AliasOpNo), ADI->getDef());
433 // For register operands, the source register class can be a subclass
434 // of the instruction register class, not just an exact match.
435 if (ADI && ADI->getDef()->isSubClassOf("RegisterClass")) {
436 if (!InstOpRec->isSubClassOf("RegisterClass"))
438 if (!T.getRegisterClass(InstOpRec)
439 .hasSubClass(&T.getRegisterClass(ADI->getDef())))
441 ResOp = ResultOperand(Result->getArgName(AliasOpNo), ADI->getDef());
445 // Handle explicit registers.
446 if (ADI && ADI->getDef()->isSubClassOf("Register")) {
447 if (InstOpRec->isSubClassOf("OptionalDefOperand")) {
448 DagInit *DI = InstOpRec->getValueAsDag("MIOperandInfo");
449 // The operand info should only have a single (register) entry. We
450 // want the register class of it.
451 InstOpRec = cast<DefInit>(DI->getArg(0))->getDef();
454 if (InstOpRec->isSubClassOf("RegisterOperand"))
455 InstOpRec = InstOpRec->getValueAsDef("RegClass");
457 if (!InstOpRec->isSubClassOf("RegisterClass"))
460 if (!T.getRegisterClass(InstOpRec)
461 .contains(T.getRegBank().getReg(ADI->getDef())))
462 PrintFatalError(Loc, "fixed register " + ADI->getDef()->getName() +
463 " is not a member of the " + InstOpRec->getName() +
466 if (!Result->getArgName(AliasOpNo).empty())
467 PrintFatalError(Loc, "result fixed register argument must "
470 ResOp = ResultOperand(ADI->getDef());
474 // Handle "zero_reg" for optional def operands.
475 if (ADI && ADI->getDef()->getName() == "zero_reg") {
477 // Check if this is an optional def.
478 // Tied operands where the source is a sub-operand of a complex operand
479 // need to represent both operands in the alias destination instruction.
480 // Allow zero_reg for the tied portion. This can and should go away once
481 // the MC representation of things doesn't use tied operands at all.
482 //if (!InstOpRec->isSubClassOf("OptionalDefOperand"))
483 // throw TGError(Loc, "reg0 used for result that is not an "
484 // "OptionalDefOperand!");
486 ResOp = ResultOperand(static_cast<Record*>(0));
491 if (IntInit *II = dyn_cast<IntInit>(Arg)) {
492 if (hasSubOps || !InstOpRec->isSubClassOf("Operand"))
494 // Integer arguments can't have names.
495 if (!Result->getArgName(AliasOpNo).empty())
496 PrintFatalError(Loc, "result argument #" + utostr(AliasOpNo) +
497 " must not have a name!");
498 ResOp = ResultOperand(II->getValue());
502 // If both are Operands with the same MVT, allow the conversion. It's
503 // up to the user to make sure the values are appropriate, just like
505 if (InstOpRec->isSubClassOf("Operand") &&
506 ADI->getDef()->isSubClassOf("Operand")) {
507 // FIXME: What other attributes should we check here? Identical
508 // MIOperandInfo perhaps?
509 if (InstOpRec->getValueInit("Type") != ADI->getDef()->getValueInit("Type"))
511 ResOp = ResultOperand(Result->getArgName(AliasOpNo), ADI->getDef());
518 CodeGenInstAlias::CodeGenInstAlias(Record *R, CodeGenTarget &T) : TheDef(R) {
519 AsmString = R->getValueAsString("AsmString");
520 Result = R->getValueAsDag("ResultInst");
522 // Verify that the root of the result is an instruction.
523 DefInit *DI = dyn_cast<DefInit>(Result->getOperator());
524 if (DI == 0 || !DI->getDef()->isSubClassOf("Instruction"))
525 PrintFatalError(R->getLoc(),
526 "result of inst alias should be an instruction");
528 ResultInst = &T.getInstruction(DI->getDef());
530 // NameClass - If argument names are repeated, we need to verify they have
532 StringMap<Record*> NameClass;
533 for (unsigned i = 0, e = Result->getNumArgs(); i != e; ++i) {
534 DefInit *ADI = dyn_cast<DefInit>(Result->getArg(i));
535 if (!ADI || Result->getArgName(i).empty())
537 // Verify we don't have something like: (someinst GR16:$foo, GR32:$foo)
538 // $foo can exist multiple times in the result list, but it must have the
540 Record *&Entry = NameClass[Result->getArgName(i)];
541 if (Entry && Entry != ADI->getDef())
542 PrintFatalError(R->getLoc(), "result value $" + Result->getArgName(i) +
543 " is both " + Entry->getName() + " and " +
544 ADI->getDef()->getName() + "!");
545 Entry = ADI->getDef();
548 // Decode and validate the arguments of the result.
549 unsigned AliasOpNo = 0;
550 for (unsigned i = 0, e = ResultInst->Operands.size(); i != e; ++i) {
552 // Tied registers don't have an entry in the result dag unless they're part
553 // of a complex operand, in which case we include them anyways, as we
554 // don't have any other way to specify the whole operand.
555 if (ResultInst->Operands[i].MINumOperands == 1 &&
556 ResultInst->Operands[i].getTiedRegister() != -1)
559 if (AliasOpNo >= Result->getNumArgs())
560 PrintFatalError(R->getLoc(), "not enough arguments for instruction!");
562 Record *InstOpRec = ResultInst->Operands[i].Rec;
563 unsigned NumSubOps = ResultInst->Operands[i].MINumOperands;
564 ResultOperand ResOp(static_cast<int64_t>(0));
565 if (tryAliasOpMatch(Result, AliasOpNo, InstOpRec, (NumSubOps > 1),
566 R->getLoc(), T, ResOp)) {
567 // If this is a simple operand, or a complex operand with a custom match
568 // class, then we can match is verbatim.
569 if (NumSubOps == 1 ||
570 (InstOpRec->getValue("ParserMatchClass") &&
571 InstOpRec->getValueAsDef("ParserMatchClass")
572 ->getValueAsString("Name") != "Imm")) {
573 ResultOperands.push_back(ResOp);
574 ResultInstOperandIndex.push_back(std::make_pair(i, -1));
577 // Otherwise, we need to match each of the suboperands individually.
579 DagInit *MIOI = ResultInst->Operands[i].MIOperandInfo;
580 for (unsigned SubOp = 0; SubOp != NumSubOps; ++SubOp) {
581 Record *SubRec = cast<DefInit>(MIOI->getArg(SubOp))->getDef();
583 // Take care to instantiate each of the suboperands with the correct
584 // nomenclature: $foo.bar
585 ResultOperands.push_back(
586 ResultOperand(Result->getArgName(AliasOpNo) + "." +
587 MIOI->getArgName(SubOp), SubRec));
588 ResultInstOperandIndex.push_back(std::make_pair(i, SubOp));
595 // If the argument did not match the instruction operand, and the operand
596 // is composed of multiple suboperands, try matching the suboperands.
598 DagInit *MIOI = ResultInst->Operands[i].MIOperandInfo;
599 for (unsigned SubOp = 0; SubOp != NumSubOps; ++SubOp) {
600 if (AliasOpNo >= Result->getNumArgs())
601 PrintFatalError(R->getLoc(), "not enough arguments for instruction!");
602 Record *SubRec = cast<DefInit>(MIOI->getArg(SubOp))->getDef();
603 if (tryAliasOpMatch(Result, AliasOpNo, SubRec, false,
604 R->getLoc(), T, ResOp)) {
605 ResultOperands.push_back(ResOp);
606 ResultInstOperandIndex.push_back(std::make_pair(i, SubOp));
609 PrintFatalError(R->getLoc(), "result argument #" + utostr(AliasOpNo) +
610 " does not match instruction operand class " +
611 (SubOp == 0 ? InstOpRec->getName() :SubRec->getName()));
616 PrintFatalError(R->getLoc(), "result argument #" + utostr(AliasOpNo) +
617 " does not match instruction operand class " +
618 InstOpRec->getName());
621 if (AliasOpNo != Result->getNumArgs())
622 PrintFatalError(R->getLoc(), "too many operands for instruction!");