1 //===- CodeGenTarget.cpp - CodeGen Target Class Wrapper ---------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This class wrap target description classes used by the various code
11 // generation TableGen backends. This makes it easier to access the data and
12 // provides a single place that needs to check it for validity. All of these
13 // classes throw exceptions on error conditions.
15 //===----------------------------------------------------------------------===//
17 #include "CodeGenTarget.h"
18 #include "CodeGenIntrinsics.h"
20 #include "llvm/ADT/StringExtras.h"
21 #include "llvm/Support/CommandLine.h"
22 #include "llvm/Support/Streams.h"
27 static cl::opt<unsigned>
28 AsmWriterNum("asmwriternum", cl::init(0),
29 cl::desc("Make -gen-asm-writer emit assembly writer #N"));
31 /// getValueType - Return the MCV::ValueType that the specified TableGen record
33 MVT::ValueType llvm::getValueType(Record *Rec) {
34 return (MVT::ValueType)Rec->getValueAsInt("Value");
37 std::string llvm::getName(MVT::ValueType T) {
39 case MVT::Other: return "UNKNOWN";
40 case MVT::i1: return "MVT::i1";
41 case MVT::i8: return "MVT::i8";
42 case MVT::i16: return "MVT::i16";
43 case MVT::i32: return "MVT::i32";
44 case MVT::i64: return "MVT::i64";
45 case MVT::i128: return "MVT::i128";
46 case MVT::iAny: return "MVT::iAny";
47 case MVT::fAny: return "MVT::fAny";
48 case MVT::f32: return "MVT::f32";
49 case MVT::f64: return "MVT::f64";
50 case MVT::f80: return "MVT::f80";
51 case MVT::f128: return "MVT::f128";
52 case MVT::ppcf128: return "MVT::ppcf128";
53 case MVT::Flag: return "MVT::Flag";
54 case MVT::isVoid:return "MVT::void";
55 case MVT::v8i8: return "MVT::v8i8";
56 case MVT::v4i16: return "MVT::v4i16";
57 case MVT::v2i32: return "MVT::v2i32";
58 case MVT::v1i64: return "MVT::v1i64";
59 case MVT::v16i8: return "MVT::v16i8";
60 case MVT::v8i16: return "MVT::v8i16";
61 case MVT::v4i32: return "MVT::v4i32";
62 case MVT::v2i64: return "MVT::v2i64";
63 case MVT::v2f32: return "MVT::v2f32";
64 case MVT::v4f32: return "MVT::v4f32";
65 case MVT::v2f64: return "MVT::v2f64";
66 case MVT::v3i32: return "MVT::v3i32";
67 case MVT::v3f32: return "MVT::v3f32";
68 case MVT::iPTR: return "TLI.getPointerTy()";
69 default: assert(0 && "ILLEGAL VALUE TYPE!"); return "";
73 std::string llvm::getEnumName(MVT::ValueType T) {
75 case MVT::Other: return "MVT::Other";
76 case MVT::i1: return "MVT::i1";
77 case MVT::i8: return "MVT::i8";
78 case MVT::i16: return "MVT::i16";
79 case MVT::i32: return "MVT::i32";
80 case MVT::i64: return "MVT::i64";
81 case MVT::i128: return "MVT::i128";
82 case MVT::iAny: return "MVT::iAny";
83 case MVT::fAny: return "MVT::fAny";
84 case MVT::f32: return "MVT::f32";
85 case MVT::f64: return "MVT::f64";
86 case MVT::f80: return "MVT::f80";
87 case MVT::f128: return "MVT::f128";
88 case MVT::ppcf128: return "MVT::ppcf128";
89 case MVT::Flag: return "MVT::Flag";
90 case MVT::isVoid:return "MVT::isVoid";
91 case MVT::v8i8: return "MVT::v8i8";
92 case MVT::v4i16: return "MVT::v4i16";
93 case MVT::v2i32: return "MVT::v2i32";
94 case MVT::v1i64: return "MVT::v1i64";
95 case MVT::v16i8: return "MVT::v16i8";
96 case MVT::v8i16: return "MVT::v8i16";
97 case MVT::v4i32: return "MVT::v4i32";
98 case MVT::v2i64: return "MVT::v2i64";
99 case MVT::v2f32: return "MVT::v2f32";
100 case MVT::v4f32: return "MVT::v4f32";
101 case MVT::v2f64: return "MVT::v2f64";
102 case MVT::v3i32: return "MVT::v3i32";
103 case MVT::v3f32: return "MVT::v3f32";
104 case MVT::iPTR: return "MVT::iPTR";
105 default: assert(0 && "ILLEGAL VALUE TYPE!"); return "";
110 /// getTarget - Return the current instance of the Target class.
112 CodeGenTarget::CodeGenTarget() {
113 std::vector<Record*> Targets = Records.getAllDerivedDefinitions("Target");
114 if (Targets.size() == 0)
115 throw std::string("ERROR: No 'Target' subclasses defined!");
116 if (Targets.size() != 1)
117 throw std::string("ERROR: Multiple subclasses of Target defined!");
118 TargetRec = Targets[0];
122 const std::string &CodeGenTarget::getName() const {
123 return TargetRec->getName();
126 Record *CodeGenTarget::getInstructionSet() const {
127 return TargetRec->getValueAsDef("InstructionSet");
130 /// getAsmWriter - Return the AssemblyWriter definition for this target.
132 Record *CodeGenTarget::getAsmWriter() const {
133 std::vector<Record*> LI = TargetRec->getValueAsListOfDefs("AssemblyWriters");
134 if (AsmWriterNum >= LI.size())
135 throw "Target does not have an AsmWriter #" + utostr(AsmWriterNum) + "!";
136 return LI[AsmWriterNum];
139 void CodeGenTarget::ReadRegisters() const {
140 std::vector<Record*> Regs = Records.getAllDerivedDefinitions("Register");
142 throw std::string("No 'Register' subclasses defined!");
144 Registers.reserve(Regs.size());
145 Registers.assign(Regs.begin(), Regs.end());
148 CodeGenRegister::CodeGenRegister(Record *R) : TheDef(R) {
149 DeclaredSpillSize = R->getValueAsInt("SpillSize");
150 DeclaredSpillAlignment = R->getValueAsInt("SpillAlignment");
153 const std::string &CodeGenRegister::getName() const {
154 return TheDef->getName();
157 void CodeGenTarget::ReadRegisterClasses() const {
158 std::vector<Record*> RegClasses =
159 Records.getAllDerivedDefinitions("RegisterClass");
160 if (RegClasses.empty())
161 throw std::string("No 'RegisterClass' subclasses defined!");
163 RegisterClasses.reserve(RegClasses.size());
164 RegisterClasses.assign(RegClasses.begin(), RegClasses.end());
167 std::vector<unsigned char> CodeGenTarget::getRegisterVTs(Record *R) const {
168 std::vector<unsigned char> Result;
169 const std::vector<CodeGenRegisterClass> &RCs = getRegisterClasses();
170 for (unsigned i = 0, e = RCs.size(); i != e; ++i) {
171 const CodeGenRegisterClass &RC = RegisterClasses[i];
172 for (unsigned ei = 0, ee = RC.Elements.size(); ei != ee; ++ei) {
173 if (R == RC.Elements[ei]) {
174 const std::vector<MVT::ValueType> &InVTs = RC.getValueTypes();
175 for (unsigned i = 0, e = InVTs.size(); i != e; ++i)
176 Result.push_back(InVTs[i]);
184 CodeGenRegisterClass::CodeGenRegisterClass(Record *R) : TheDef(R) {
185 // Rename anonymous register classes.
186 if (R->getName().size() > 9 && R->getName()[9] == '.') {
187 static unsigned AnonCounter = 0;
188 R->setName("AnonRegClass_"+utostr(AnonCounter++));
191 std::vector<Record*> TypeList = R->getValueAsListOfDefs("RegTypes");
192 for (unsigned i = 0, e = TypeList.size(); i != e; ++i) {
193 Record *Type = TypeList[i];
194 if (!Type->isSubClassOf("ValueType"))
195 throw "RegTypes list member '" + Type->getName() +
196 "' does not derive from the ValueType class!";
197 VTs.push_back(getValueType(Type));
199 assert(!VTs.empty() && "RegisterClass must contain at least one ValueType!");
201 std::vector<Record*> RegList = R->getValueAsListOfDefs("MemberList");
202 for (unsigned i = 0, e = RegList.size(); i != e; ++i) {
203 Record *Reg = RegList[i];
204 if (!Reg->isSubClassOf("Register"))
205 throw "Register Class member '" + Reg->getName() +
206 "' does not derive from the Register class!";
207 Elements.push_back(Reg);
210 std::vector<Record*> SubRegClassList =
211 R->getValueAsListOfDefs("SubRegClassList");
212 for (unsigned i = 0, e = SubRegClassList.size(); i != e; ++i) {
213 Record *SubRegClass = SubRegClassList[i];
214 if (!SubRegClass->isSubClassOf("RegisterClass"))
215 throw "Register Class member '" + SubRegClass->getName() +
216 "' does not derive from the RegisterClass class!";
217 SubRegClasses.push_back(SubRegClass);
220 // Allow targets to override the size in bits of the RegisterClass.
221 unsigned Size = R->getValueAsInt("Size");
223 Namespace = R->getValueAsString("Namespace");
224 SpillSize = Size ? Size : MVT::getSizeInBits(VTs[0]);
225 SpillAlignment = R->getValueAsInt("Alignment");
226 CopyCost = R->getValueAsInt("CopyCost");
227 MethodBodies = R->getValueAsCode("MethodBodies");
228 MethodProtos = R->getValueAsCode("MethodProtos");
231 const std::string &CodeGenRegisterClass::getName() const {
232 return TheDef->getName();
235 void CodeGenTarget::ReadLegalValueTypes() const {
236 const std::vector<CodeGenRegisterClass> &RCs = getRegisterClasses();
237 for (unsigned i = 0, e = RCs.size(); i != e; ++i)
238 for (unsigned ri = 0, re = RCs[i].VTs.size(); ri != re; ++ri)
239 LegalValueTypes.push_back(RCs[i].VTs[ri]);
241 // Remove duplicates.
242 std::sort(LegalValueTypes.begin(), LegalValueTypes.end());
243 LegalValueTypes.erase(std::unique(LegalValueTypes.begin(),
244 LegalValueTypes.end()),
245 LegalValueTypes.end());
249 void CodeGenTarget::ReadInstructions() const {
250 std::vector<Record*> Insts = Records.getAllDerivedDefinitions("Instruction");
251 if (Insts.size() <= 2)
252 throw std::string("No 'Instruction' subclasses defined!");
254 // Parse the instructions defined in the .td file.
255 std::string InstFormatName =
256 getAsmWriter()->getValueAsString("InstFormatName");
258 for (unsigned i = 0, e = Insts.size(); i != e; ++i) {
259 std::string AsmStr = Insts[i]->getValueAsString(InstFormatName);
260 Instructions.insert(std::make_pair(Insts[i]->getName(),
261 CodeGenInstruction(Insts[i], AsmStr)));
265 /// getInstructionsByEnumValue - Return all of the instructions defined by the
266 /// target, ordered by their enum value.
268 getInstructionsByEnumValue(std::vector<const CodeGenInstruction*>
269 &NumberedInstructions) {
270 std::map<std::string, CodeGenInstruction>::const_iterator I;
271 I = getInstructions().find("PHI");
272 if (I == Instructions.end()) throw "Could not find 'PHI' instruction!";
273 const CodeGenInstruction *PHI = &I->second;
275 I = getInstructions().find("INLINEASM");
276 if (I == Instructions.end()) throw "Could not find 'INLINEASM' instruction!";
277 const CodeGenInstruction *INLINEASM = &I->second;
279 I = getInstructions().find("LABEL");
280 if (I == Instructions.end()) throw "Could not find 'LABEL' instruction!";
281 const CodeGenInstruction *LABEL = &I->second;
283 I = getInstructions().find("EXTRACT_SUBREG");
284 if (I == Instructions.end())
285 throw "Could not find 'EXTRACT_SUBREG' instruction!";
286 const CodeGenInstruction *EXTRACT_SUBREG = &I->second;
288 I = getInstructions().find("INSERT_SUBREG");
289 if (I == Instructions.end())
290 throw "Could not find 'INSERT_SUBREG' instruction!";
291 const CodeGenInstruction *INSERT_SUBREG = &I->second;
293 // Print out the rest of the instructions now.
294 NumberedInstructions.push_back(PHI);
295 NumberedInstructions.push_back(INLINEASM);
296 NumberedInstructions.push_back(LABEL);
297 NumberedInstructions.push_back(EXTRACT_SUBREG);
298 NumberedInstructions.push_back(INSERT_SUBREG);
299 for (inst_iterator II = inst_begin(), E = inst_end(); II != E; ++II)
300 if (&II->second != PHI &&
301 &II->second != INLINEASM &&
302 &II->second != LABEL &&
303 &II->second != EXTRACT_SUBREG &&
304 &II->second != INSERT_SUBREG)
305 NumberedInstructions.push_back(&II->second);
309 /// isLittleEndianEncoding - Return whether this target encodes its instruction
310 /// in little-endian format, i.e. bits laid out in the order [0..n]
312 bool CodeGenTarget::isLittleEndianEncoding() const {
313 return getInstructionSet()->getValueAsBit("isLittleEndianEncoding");
318 static void ParseConstraint(const std::string &CStr, CodeGenInstruction *I) {
319 // FIXME: Only supports TIED_TO for now.
320 std::string::size_type pos = CStr.find_first_of('=');
321 assert(pos != std::string::npos && "Unrecognized constraint");
322 std::string Name = CStr.substr(0, pos);
324 // TIED_TO: $src1 = $dst
325 std::string::size_type wpos = Name.find_first_of(" \t");
326 if (wpos == std::string::npos)
327 throw "Illegal format for tied-to constraint: '" + CStr + "'";
328 std::string DestOpName = Name.substr(0, wpos);
329 std::pair<unsigned,unsigned> DestOp = I->ParseOperandName(DestOpName, false);
331 Name = CStr.substr(pos+1);
332 wpos = Name.find_first_not_of(" \t");
333 if (wpos == std::string::npos)
334 throw "Illegal format for tied-to constraint: '" + CStr + "'";
336 std::pair<unsigned,unsigned> SrcOp =
337 I->ParseOperandName(Name.substr(wpos), false);
339 throw "Illegal tied-to operand constraint '" + CStr + "'";
342 unsigned FlatOpNo = I->getFlattenedOperandNumber(SrcOp);
343 // Build the string for the operand.
344 std::string OpConstraint =
345 "((" + utostr(FlatOpNo) + " << 16) | (1 << TOI::TIED_TO))";
348 if (!I->OperandList[DestOp.first].Constraints[DestOp.second].empty())
349 throw "Operand '" + DestOpName + "' cannot have multiple constraints!";
350 I->OperandList[DestOp.first].Constraints[DestOp.second] = OpConstraint;
353 static void ParseConstraints(const std::string &CStr, CodeGenInstruction *I) {
354 // Make sure the constraints list for each operand is large enough to hold
355 // constraint info, even if none is present.
356 for (unsigned i = 0, e = I->OperandList.size(); i != e; ++i)
357 I->OperandList[i].Constraints.resize(I->OperandList[i].MINumOperands);
359 if (CStr.empty()) return;
361 const std::string delims(",");
362 std::string::size_type bidx, eidx;
364 bidx = CStr.find_first_not_of(delims);
365 while (bidx != std::string::npos) {
366 eidx = CStr.find_first_of(delims, bidx);
367 if (eidx == std::string::npos)
368 eidx = CStr.length();
370 ParseConstraint(CStr.substr(bidx, eidx), I);
371 bidx = CStr.find_first_not_of(delims, eidx);
375 CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr)
376 : TheDef(R), AsmString(AsmStr) {
377 Name = R->getValueAsString("Name");
378 Namespace = R->getValueAsString("Namespace");
380 isReturn = R->getValueAsBit("isReturn");
381 isBranch = R->getValueAsBit("isBranch");
382 isIndirectBranch = R->getValueAsBit("isIndirectBranch");
383 isBarrier = R->getValueAsBit("isBarrier");
384 isCall = R->getValueAsBit("isCall");
385 isLoad = R->getValueAsBit("isLoad");
386 isStore = R->getValueAsBit("isStore");
387 bool isTwoAddress = R->getValueAsBit("isTwoAddress");
388 isPredicable = R->getValueAsBit("isPredicable");
389 isConvertibleToThreeAddress = R->getValueAsBit("isConvertibleToThreeAddress");
390 isCommutable = R->getValueAsBit("isCommutable");
391 isTerminator = R->getValueAsBit("isTerminator");
392 isReMaterializable = R->getValueAsBit("isReMaterializable");
393 hasDelaySlot = R->getValueAsBit("hasDelaySlot");
394 usesCustomDAGSchedInserter = R->getValueAsBit("usesCustomDAGSchedInserter");
395 hasCtrlDep = R->getValueAsBit("hasCtrlDep");
396 isNotDuplicable = R->getValueAsBit("isNotDuplicable");
397 hasOptionalDef = false;
398 hasVariableNumberOfOperands = false;
402 DI = R->getValueAsDag("OutOperandList");
404 // Error getting operand list, just ignore it (sparcv9).
409 NumDefs = DI->getNumArgs();
413 IDI = R->getValueAsDag("InOperandList");
415 // Error getting operand list, just ignore it (sparcv9).
420 DI = (DagInit*)(new BinOpInit(BinOpInit::CONCAT, DI, IDI))->Fold();
422 unsigned MIOperandNo = 0;
423 std::set<std::string> OperandNames;
424 for (unsigned i = 0, e = DI->getNumArgs(); i != e; ++i) {
425 DefInit *Arg = dynamic_cast<DefInit*>(DI->getArg(i));
427 throw "Illegal operand for the '" + R->getName() + "' instruction!";
429 Record *Rec = Arg->getDef();
430 std::string PrintMethod = "printOperand";
432 DagInit *MIOpInfo = 0;
433 if (Rec->isSubClassOf("Operand")) {
434 PrintMethod = Rec->getValueAsString("PrintMethod");
435 MIOpInfo = Rec->getValueAsDag("MIOperandInfo");
437 // Verify that MIOpInfo has an 'ops' root value.
438 if (!dynamic_cast<DefInit*>(MIOpInfo->getOperator()) ||
439 dynamic_cast<DefInit*>(MIOpInfo->getOperator())
440 ->getDef()->getName() != "ops")
441 throw "Bad value for MIOperandInfo in operand '" + Rec->getName() +
444 // If we have MIOpInfo, then we have #operands equal to number of entries
446 if (unsigned NumArgs = MIOpInfo->getNumArgs())
449 if (Rec->isSubClassOf("PredicateOperand"))
451 else if (Rec->isSubClassOf("OptionalDefOperand"))
452 hasOptionalDef = true;
453 } else if (Rec->getName() == "variable_ops") {
454 hasVariableNumberOfOperands = true;
456 } else if (!Rec->isSubClassOf("RegisterClass") &&
457 Rec->getName() != "ptr_rc")
458 throw "Unknown operand class '" + Rec->getName() +
459 "' in instruction '" + R->getName() + "' instruction!";
461 // Check that the operand has a name and that it's unique.
462 if (DI->getArgName(i).empty())
463 throw "In instruction '" + R->getName() + "', operand #" + utostr(i) +
465 if (!OperandNames.insert(DI->getArgName(i)).second)
466 throw "In instruction '" + R->getName() + "', operand #" + utostr(i) +
467 " has the same name as a previous operand!";
469 OperandList.push_back(OperandInfo(Rec, DI->getArgName(i), PrintMethod,
470 MIOperandNo, NumOps, MIOpInfo));
471 MIOperandNo += NumOps;
474 // Parse Constraints.
475 ParseConstraints(R->getValueAsString("Constraints"), this);
477 // For backward compatibility: isTwoAddress means operand 1 is tied to
480 if (!OperandList[1].Constraints[0].empty())
481 throw R->getName() + ": cannot use isTwoAddress property: instruction "
482 "already has constraint set!";
483 OperandList[1].Constraints[0] = "((0 << 16) | (1 << TOI::TIED_TO))";
486 // Any operands with unset constraints get 0 as their constraint.
487 for (unsigned op = 0, e = OperandList.size(); op != e; ++op)
488 for (unsigned j = 0, e = OperandList[op].MINumOperands; j != e; ++j)
489 if (OperandList[op].Constraints[j].empty())
490 OperandList[op].Constraints[j] = "0";
492 // Parse the DisableEncoding field.
493 std::string DisableEncoding = R->getValueAsString("DisableEncoding");
495 std::string OpName = getToken(DisableEncoding, " ,\t");
496 if (OpName.empty()) break;
498 // Figure out which operand this is.
499 std::pair<unsigned,unsigned> Op = ParseOperandName(OpName, false);
501 // Mark the operand as not-to-be encoded.
502 if (Op.second >= OperandList[Op.first].DoNotEncode.size())
503 OperandList[Op.first].DoNotEncode.resize(Op.second+1);
504 OperandList[Op.first].DoNotEncode[Op.second] = true;
510 /// getOperandNamed - Return the index of the operand with the specified
511 /// non-empty name. If the instruction does not have an operand with the
512 /// specified name, throw an exception.
514 unsigned CodeGenInstruction::getOperandNamed(const std::string &Name) const {
515 assert(!Name.empty() && "Cannot search for operand with no name!");
516 for (unsigned i = 0, e = OperandList.size(); i != e; ++i)
517 if (OperandList[i].Name == Name) return i;
518 throw "Instruction '" + TheDef->getName() +
519 "' does not have an operand named '$" + Name + "'!";
522 std::pair<unsigned,unsigned>
523 CodeGenInstruction::ParseOperandName(const std::string &Op,
525 if (Op.empty() || Op[0] != '$')
526 throw TheDef->getName() + ": Illegal operand name: '" + Op + "'";
528 std::string OpName = Op.substr(1);
529 std::string SubOpName;
531 // Check to see if this is $foo.bar.
532 std::string::size_type DotIdx = OpName.find_first_of(".");
533 if (DotIdx != std::string::npos) {
534 SubOpName = OpName.substr(DotIdx+1);
535 if (SubOpName.empty())
536 throw TheDef->getName() + ": illegal empty suboperand name in '" +Op +"'";
537 OpName = OpName.substr(0, DotIdx);
540 unsigned OpIdx = getOperandNamed(OpName);
542 if (SubOpName.empty()) { // If no suboperand name was specified:
543 // If one was needed, throw.
544 if (OperandList[OpIdx].MINumOperands > 1 && !AllowWholeOp &&
546 throw TheDef->getName() + ": Illegal to refer to"
547 " whole operand part of complex operand '" + Op + "'";
549 // Otherwise, return the operand.
550 return std::make_pair(OpIdx, 0U);
553 // Find the suboperand number involved.
554 DagInit *MIOpInfo = OperandList[OpIdx].MIOperandInfo;
556 throw TheDef->getName() + ": unknown suboperand name in '" + Op + "'";
558 // Find the operand with the right name.
559 for (unsigned i = 0, e = MIOpInfo->getNumArgs(); i != e; ++i)
560 if (MIOpInfo->getArgName(i) == SubOpName)
561 return std::make_pair(OpIdx, i);
563 // Otherwise, didn't find it!
564 throw TheDef->getName() + ": unknown suboperand name in '" + Op + "'";
570 //===----------------------------------------------------------------------===//
571 // ComplexPattern implementation
573 ComplexPattern::ComplexPattern(Record *R) {
574 Ty = ::getValueType(R->getValueAsDef("Ty"));
575 NumOperands = R->getValueAsInt("NumOperands");
576 SelectFunc = R->getValueAsString("SelectFunc");
577 RootNodes = R->getValueAsListOfDefs("RootNodes");
579 // Parse the properties.
581 std::vector<Record*> PropList = R->getValueAsListOfDefs("Properties");
582 for (unsigned i = 0, e = PropList.size(); i != e; ++i)
583 if (PropList[i]->getName() == "SDNPHasChain") {
584 Properties |= 1 << SDNPHasChain;
585 } else if (PropList[i]->getName() == "SDNPOptInFlag") {
586 Properties |= 1 << SDNPOptInFlag;
588 cerr << "Unsupported SD Node property '" << PropList[i]->getName()
589 << "' on ComplexPattern '" << R->getName() << "'!\n";
594 //===----------------------------------------------------------------------===//
595 // CodeGenIntrinsic Implementation
596 //===----------------------------------------------------------------------===//
598 std::vector<CodeGenIntrinsic> llvm::LoadIntrinsics(const RecordKeeper &RC) {
599 std::vector<Record*> I = RC.getAllDerivedDefinitions("Intrinsic");
601 std::vector<CodeGenIntrinsic> Result;
603 // If we are in the context of a target .td file, get the target info so that
604 // we can decode the current intptr_t.
605 CodeGenTarget *CGT = 0;
606 if (Records.getClass("Target") &&
607 Records.getAllDerivedDefinitions("Target").size() == 1)
608 CGT = new CodeGenTarget();
610 for (unsigned i = 0, e = I.size(); i != e; ++i)
611 Result.push_back(CodeGenIntrinsic(I[i], CGT));
616 CodeGenIntrinsic::CodeGenIntrinsic(Record *R, CodeGenTarget *CGT) {
618 std::string DefName = R->getName();
620 isOverloaded = false;
622 if (DefName.size() <= 4 ||
623 std::string(DefName.begin(), DefName.begin()+4) != "int_")
624 throw "Intrinsic '" + DefName + "' does not start with 'int_'!";
625 EnumName = std::string(DefName.begin()+4, DefName.end());
626 if (R->getValue("GCCBuiltinName")) // Ignore a missing GCCBuiltinName field.
627 GCCBuiltinName = R->getValueAsString("GCCBuiltinName");
628 TargetPrefix = R->getValueAsString("TargetPrefix");
629 Name = R->getValueAsString("LLVMName");
631 // If an explicit name isn't specified, derive one from the DefName.
633 for (unsigned i = 0, e = EnumName.size(); i != e; ++i)
634 if (EnumName[i] == '_')
639 // Verify it starts with "llvm.".
640 if (Name.size() <= 5 ||
641 std::string(Name.begin(), Name.begin()+5) != "llvm.")
642 throw "Intrinsic '" + DefName + "'s name does not start with 'llvm.'!";
645 // If TargetPrefix is specified, make sure that Name starts with
646 // "llvm.<targetprefix>.".
647 if (!TargetPrefix.empty()) {
648 if (Name.size() < 6+TargetPrefix.size() ||
649 std::string(Name.begin()+5, Name.begin()+6+TargetPrefix.size())
650 != (TargetPrefix+"."))
651 throw "Intrinsic '" + DefName + "' does not start with 'llvm." +
652 TargetPrefix + ".'!";
655 // Parse the list of argument types.
656 ListInit *TypeList = R->getValueAsListInit("Types");
657 for (unsigned i = 0, e = TypeList->getSize(); i != e; ++i) {
658 Record *TyEl = TypeList->getElementAsRecord(i);
659 assert(TyEl->isSubClassOf("LLVMType") && "Expected a type!");
660 MVT::ValueType VT = getValueType(TyEl->getValueAsDef("VT"));
661 isOverloaded |= VT == MVT::iAny || VT == MVT::fAny;
662 ArgVTs.push_back(VT);
663 ArgTypeDefs.push_back(TyEl);
665 if (ArgVTs.size() == 0)
666 throw "Intrinsic '"+DefName+"' needs at least a type for the ret value!";
669 // Parse the intrinsic properties.
670 ListInit *PropList = R->getValueAsListInit("Properties");
671 for (unsigned i = 0, e = PropList->getSize(); i != e; ++i) {
672 Record *Property = PropList->getElementAsRecord(i);
673 assert(Property->isSubClassOf("IntrinsicProperty") &&
674 "Expected a property!");
676 if (Property->getName() == "IntrNoMem")
678 else if (Property->getName() == "IntrReadArgMem")
680 else if (Property->getName() == "IntrReadMem")
682 else if (Property->getName() == "IntrWriteArgMem")
683 ModRef = WriteArgMem;
684 else if (Property->getName() == "IntrWriteMem")
687 assert(0 && "Unknown property!");