1 //===- CodeGenTarget.cpp - CodeGen Target 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 class wraps 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/ADT/STLExtras.h"
22 #include "llvm/Support/CommandLine.h"
26 static cl::opt<unsigned>
27 AsmParserNum("asmparsernum", cl::init(0),
28 cl::desc("Make -gen-asm-parser emit assembly parser #N"));
30 static cl::opt<unsigned>
31 AsmWriterNum("asmwriternum", cl::init(0),
32 cl::desc("Make -gen-asm-writer emit assembly writer #N"));
34 /// getValueType - Return the MVT::SimpleValueType that the specified TableGen
35 /// record corresponds to.
36 MVT::SimpleValueType llvm::getValueType(Record *Rec) {
37 return (MVT::SimpleValueType)Rec->getValueAsInt("Value");
40 std::string llvm::getName(MVT::SimpleValueType T) {
42 case MVT::Other: return "UNKNOWN";
43 case MVT::iPTR: return "TLI.getPointerTy()";
44 case MVT::iPTRAny: return "TLI.getPointerTy()";
45 default: return getEnumName(T);
49 std::string llvm::getEnumName(MVT::SimpleValueType T) {
51 case MVT::Other: return "MVT::Other";
52 case MVT::i1: return "MVT::i1";
53 case MVT::i8: return "MVT::i8";
54 case MVT::i16: return "MVT::i16";
55 case MVT::i32: return "MVT::i32";
56 case MVT::i64: return "MVT::i64";
57 case MVT::i128: return "MVT::i128";
58 case MVT::iAny: return "MVT::iAny";
59 case MVT::fAny: return "MVT::fAny";
60 case MVT::vAny: return "MVT::vAny";
61 case MVT::f32: return "MVT::f32";
62 case MVT::f64: return "MVT::f64";
63 case MVT::f80: return "MVT::f80";
64 case MVT::f128: return "MVT::f128";
65 case MVT::ppcf128: return "MVT::ppcf128";
66 case MVT::x86mmx: return "MVT::x86mmx";
67 case MVT::Glue: return "MVT::Glue";
68 case MVT::isVoid: return "MVT::isVoid";
69 case MVT::v2i8: return "MVT::v2i8";
70 case MVT::v4i8: return "MVT::v4i8";
71 case MVT::v8i8: return "MVT::v8i8";
72 case MVT::v16i8: return "MVT::v16i8";
73 case MVT::v32i8: return "MVT::v32i8";
74 case MVT::v2i16: return "MVT::v2i16";
75 case MVT::v4i16: return "MVT::v4i16";
76 case MVT::v8i16: return "MVT::v8i16";
77 case MVT::v16i16: return "MVT::v16i16";
78 case MVT::v2i32: return "MVT::v2i32";
79 case MVT::v4i32: return "MVT::v4i32";
80 case MVT::v8i32: return "MVT::v8i32";
81 case MVT::v1i64: return "MVT::v1i64";
82 case MVT::v2i64: return "MVT::v2i64";
83 case MVT::v4i64: return "MVT::v4i64";
84 case MVT::v8i64: return "MVT::v8i64";
85 case MVT::v2f32: return "MVT::v2f32";
86 case MVT::v4f32: return "MVT::v4f32";
87 case MVT::v8f32: return "MVT::v8f32";
88 case MVT::v2f64: return "MVT::v2f64";
89 case MVT::v4f64: return "MVT::v4f64";
90 case MVT::Metadata: return "MVT::Metadata";
91 case MVT::iPTR: return "MVT::iPTR";
92 case MVT::iPTRAny: return "MVT::iPTRAny";
93 default: assert(0 && "ILLEGAL VALUE TYPE!"); return "";
97 /// getQualifiedName - Return the name of the specified record, with a
98 /// namespace qualifier if the record contains one.
100 std::string llvm::getQualifiedName(const Record *R) {
101 std::string Namespace;
102 if (R->getValue("Namespace"))
103 Namespace = R->getValueAsString("Namespace");
104 if (Namespace.empty()) return R->getName();
105 return Namespace + "::" + R->getName();
109 /// getTarget - Return the current instance of the Target class.
111 CodeGenTarget::CodeGenTarget(RecordKeeper &records) : Records(records) {
112 std::vector<Record*> Targets = Records.getAllDerivedDefinitions("Target");
113 if (Targets.size() == 0)
114 throw std::string("ERROR: No 'Target' subclasses defined!");
115 if (Targets.size() != 1)
116 throw std::string("ERROR: Multiple subclasses of Target defined!");
117 TargetRec = Targets[0];
121 const std::string &CodeGenTarget::getName() const {
122 return TargetRec->getName();
125 std::string CodeGenTarget::getInstNamespace() const {
126 for (inst_iterator i = inst_begin(), e = inst_end(); i != e; ++i) {
127 // Make sure not to pick up "TargetOpcode" by accidentally getting
128 // the namespace off the PHI instruction or something.
129 if ((*i)->Namespace != "TargetOpcode")
130 return (*i)->Namespace;
136 Record *CodeGenTarget::getInstructionSet() const {
137 return TargetRec->getValueAsDef("InstructionSet");
141 /// getAsmParser - Return the AssemblyParser definition for this target.
143 Record *CodeGenTarget::getAsmParser() const {
144 std::vector<Record*> LI = TargetRec->getValueAsListOfDefs("AssemblyParsers");
145 if (AsmParserNum >= LI.size())
146 throw "Target does not have an AsmParser #" + utostr(AsmParserNum) + "!";
147 return LI[AsmParserNum];
150 /// getAsmWriter - Return the AssemblyWriter definition for this target.
152 Record *CodeGenTarget::getAsmWriter() const {
153 std::vector<Record*> LI = TargetRec->getValueAsListOfDefs("AssemblyWriters");
154 if (AsmWriterNum >= LI.size())
155 throw "Target does not have an AsmWriter #" + utostr(AsmWriterNum) + "!";
156 return LI[AsmWriterNum];
159 void CodeGenTarget::ReadRegisters() const {
160 std::vector<Record*> Regs = Records.getAllDerivedDefinitions("Register");
162 throw std::string("No 'Register' subclasses defined!");
163 std::sort(Regs.begin(), Regs.end(), LessRecord());
165 Registers.reserve(Regs.size());
166 Registers.assign(Regs.begin(), Regs.end());
167 // Assign the enumeration values.
168 for (unsigned i = 0, e = Registers.size(); i != e; ++i)
169 Registers[i].EnumValue = i + 1;
172 void CodeGenTarget::ReadSubRegIndices() const {
173 SubRegIndices = Records.getAllDerivedDefinitions("SubRegIndex");
174 std::sort(SubRegIndices.begin(), SubRegIndices.end(), LessRecord());
177 Record *CodeGenTarget::createSubRegIndex(const std::string &Name) {
178 Record *R = new Record(Name, SMLoc(), Records);
180 SubRegIndices.push_back(R);
184 void CodeGenTarget::ReadRegisterClasses() const {
185 std::vector<Record*> RegClasses =
186 Records.getAllDerivedDefinitions("RegisterClass");
187 if (RegClasses.empty())
188 throw std::string("No 'RegisterClass' subclasses defined!");
190 RegisterClasses.reserve(RegClasses.size());
191 RegisterClasses.assign(RegClasses.begin(), RegClasses.end());
194 /// getRegisterByName - If there is a register with the specific AsmName,
196 const CodeGenRegister *CodeGenTarget::getRegisterByName(StringRef Name) const {
197 const std::vector<CodeGenRegister> &Regs = getRegisters();
198 for (unsigned i = 0, e = Regs.size(); i != e; ++i) {
199 const CodeGenRegister &Reg = Regs[i];
200 if (Reg.TheDef->getValueAsString("AsmName") == Name)
207 std::vector<MVT::SimpleValueType> CodeGenTarget::
208 getRegisterVTs(Record *R) const {
209 std::vector<MVT::SimpleValueType> Result;
210 const std::vector<CodeGenRegisterClass> &RCs = getRegisterClasses();
211 for (unsigned i = 0, e = RCs.size(); i != e; ++i) {
212 const CodeGenRegisterClass &RC = RegisterClasses[i];
213 for (unsigned ei = 0, ee = RC.Elements.size(); ei != ee; ++ei) {
214 if (R == RC.Elements[ei]) {
215 const std::vector<MVT::SimpleValueType> &InVTs = RC.getValueTypes();
216 Result.insert(Result.end(), InVTs.begin(), InVTs.end());
221 // Remove duplicates.
222 array_pod_sort(Result.begin(), Result.end());
223 Result.erase(std::unique(Result.begin(), Result.end()), Result.end());
228 void CodeGenTarget::ReadLegalValueTypes() const {
229 const std::vector<CodeGenRegisterClass> &RCs = getRegisterClasses();
230 for (unsigned i = 0, e = RCs.size(); i != e; ++i)
231 for (unsigned ri = 0, re = RCs[i].VTs.size(); ri != re; ++ri)
232 LegalValueTypes.push_back(RCs[i].VTs[ri]);
234 // Remove duplicates.
235 std::sort(LegalValueTypes.begin(), LegalValueTypes.end());
236 LegalValueTypes.erase(std::unique(LegalValueTypes.begin(),
237 LegalValueTypes.end()),
238 LegalValueTypes.end());
242 void CodeGenTarget::ReadInstructions() const {
243 std::vector<Record*> Insts = Records.getAllDerivedDefinitions("Instruction");
244 if (Insts.size() <= 2)
245 throw std::string("No 'Instruction' subclasses defined!");
247 // Parse the instructions defined in the .td file.
248 for (unsigned i = 0, e = Insts.size(); i != e; ++i)
249 Instructions[Insts[i]] = new CodeGenInstruction(Insts[i]);
252 static const CodeGenInstruction *
253 GetInstByName(const char *Name,
254 const DenseMap<const Record*, CodeGenInstruction*> &Insts,
255 RecordKeeper &Records) {
256 const Record *Rec = Records.getDef(Name);
258 DenseMap<const Record*, CodeGenInstruction*>::const_iterator
260 if (Rec == 0 || I == Insts.end())
261 throw std::string("Could not find '") + Name + "' instruction!";
266 /// SortInstByName - Sorting predicate to sort instructions by name.
268 struct SortInstByName {
269 bool operator()(const CodeGenInstruction *Rec1,
270 const CodeGenInstruction *Rec2) const {
271 return Rec1->TheDef->getName() < Rec2->TheDef->getName();
276 /// getInstructionsByEnumValue - Return all of the instructions defined by the
277 /// target, ordered by their enum value.
278 void CodeGenTarget::ComputeInstrsByEnum() const {
279 // The ordering here must match the ordering in TargetOpcodes.h.
280 const char *const FixedInstrs[] = {
297 const DenseMap<const Record*, CodeGenInstruction*> &Insts = getInstructions();
298 for (const char *const *p = FixedInstrs; *p; ++p) {
299 const CodeGenInstruction *Instr = GetInstByName(*p, Insts, Records);
300 assert(Instr && "Missing target independent instruction");
301 assert(Instr->Namespace == "TargetOpcode" && "Bad namespace");
302 InstrsByEnum.push_back(Instr);
304 unsigned EndOfPredefines = InstrsByEnum.size();
306 for (DenseMap<const Record*, CodeGenInstruction*>::const_iterator
307 I = Insts.begin(), E = Insts.end(); I != E; ++I) {
308 const CodeGenInstruction *CGI = I->second;
309 if (CGI->Namespace != "TargetOpcode")
310 InstrsByEnum.push_back(CGI);
313 assert(InstrsByEnum.size() == Insts.size() && "Missing predefined instr");
315 // All of the instructions are now in random order based on the map iteration.
316 // Sort them by name.
317 std::sort(InstrsByEnum.begin()+EndOfPredefines, InstrsByEnum.end(),
322 /// isLittleEndianEncoding - Return whether this target encodes its instruction
323 /// in little-endian format, i.e. bits laid out in the order [0..n]
325 bool CodeGenTarget::isLittleEndianEncoding() const {
326 return getInstructionSet()->getValueAsBit("isLittleEndianEncoding");
329 //===----------------------------------------------------------------------===//
330 // ComplexPattern implementation
332 ComplexPattern::ComplexPattern(Record *R) {
333 Ty = ::getValueType(R->getValueAsDef("Ty"));
334 NumOperands = R->getValueAsInt("NumOperands");
335 SelectFunc = R->getValueAsString("SelectFunc");
336 RootNodes = R->getValueAsListOfDefs("RootNodes");
338 // Parse the properties.
340 std::vector<Record*> PropList = R->getValueAsListOfDefs("Properties");
341 for (unsigned i = 0, e = PropList.size(); i != e; ++i)
342 if (PropList[i]->getName() == "SDNPHasChain") {
343 Properties |= 1 << SDNPHasChain;
344 } else if (PropList[i]->getName() == "SDNPOptInGlue") {
345 Properties |= 1 << SDNPOptInGlue;
346 } else if (PropList[i]->getName() == "SDNPMayStore") {
347 Properties |= 1 << SDNPMayStore;
348 } else if (PropList[i]->getName() == "SDNPMayLoad") {
349 Properties |= 1 << SDNPMayLoad;
350 } else if (PropList[i]->getName() == "SDNPSideEffect") {
351 Properties |= 1 << SDNPSideEffect;
352 } else if (PropList[i]->getName() == "SDNPMemOperand") {
353 Properties |= 1 << SDNPMemOperand;
354 } else if (PropList[i]->getName() == "SDNPVariadic") {
355 Properties |= 1 << SDNPVariadic;
356 } else if (PropList[i]->getName() == "SDNPWantRoot") {
357 Properties |= 1 << SDNPWantRoot;
358 } else if (PropList[i]->getName() == "SDNPWantParent") {
359 Properties |= 1 << SDNPWantParent;
361 errs() << "Unsupported SD Node property '" << PropList[i]->getName()
362 << "' on ComplexPattern '" << R->getName() << "'!\n";
367 //===----------------------------------------------------------------------===//
368 // CodeGenIntrinsic Implementation
369 //===----------------------------------------------------------------------===//
371 std::vector<CodeGenIntrinsic> llvm::LoadIntrinsics(const RecordKeeper &RC,
373 std::vector<Record*> I = RC.getAllDerivedDefinitions("Intrinsic");
375 std::vector<CodeGenIntrinsic> Result;
377 for (unsigned i = 0, e = I.size(); i != e; ++i) {
378 bool isTarget = I[i]->getValueAsBit("isTarget");
379 if (isTarget == TargetOnly)
380 Result.push_back(CodeGenIntrinsic(I[i]));
385 CodeGenIntrinsic::CodeGenIntrinsic(Record *R) {
387 std::string DefName = R->getName();
388 ModRef = ReadWriteMem;
389 isOverloaded = false;
390 isCommutative = false;
393 if (DefName.size() <= 4 ||
394 std::string(DefName.begin(), DefName.begin() + 4) != "int_")
395 throw "Intrinsic '" + DefName + "' does not start with 'int_'!";
397 EnumName = std::string(DefName.begin()+4, DefName.end());
399 if (R->getValue("GCCBuiltinName")) // Ignore a missing GCCBuiltinName field.
400 GCCBuiltinName = R->getValueAsString("GCCBuiltinName");
402 TargetPrefix = R->getValueAsString("TargetPrefix");
403 Name = R->getValueAsString("LLVMName");
406 // If an explicit name isn't specified, derive one from the DefName.
409 for (unsigned i = 0, e = EnumName.size(); i != e; ++i)
410 Name += (EnumName[i] == '_') ? '.' : EnumName[i];
412 // Verify it starts with "llvm.".
413 if (Name.size() <= 5 ||
414 std::string(Name.begin(), Name.begin() + 5) != "llvm.")
415 throw "Intrinsic '" + DefName + "'s name does not start with 'llvm.'!";
418 // If TargetPrefix is specified, make sure that Name starts with
419 // "llvm.<targetprefix>.".
420 if (!TargetPrefix.empty()) {
421 if (Name.size() < 6+TargetPrefix.size() ||
422 std::string(Name.begin() + 5, Name.begin() + 6 + TargetPrefix.size())
423 != (TargetPrefix + "."))
424 throw "Intrinsic '" + DefName + "' does not start with 'llvm." +
425 TargetPrefix + ".'!";
428 // Parse the list of return types.
429 std::vector<MVT::SimpleValueType> OverloadedVTs;
430 ListInit *TypeList = R->getValueAsListInit("RetTypes");
431 for (unsigned i = 0, e = TypeList->getSize(); i != e; ++i) {
432 Record *TyEl = TypeList->getElementAsRecord(i);
433 assert(TyEl->isSubClassOf("LLVMType") && "Expected a type!");
434 MVT::SimpleValueType VT;
435 if (TyEl->isSubClassOf("LLVMMatchType")) {
436 unsigned MatchTy = TyEl->getValueAsInt("Number");
437 assert(MatchTy < OverloadedVTs.size() &&
438 "Invalid matching number!");
439 VT = OverloadedVTs[MatchTy];
440 // It only makes sense to use the extended and truncated vector element
441 // variants with iAny types; otherwise, if the intrinsic is not
442 // overloaded, all the types can be specified directly.
443 assert(((!TyEl->isSubClassOf("LLVMExtendedElementVectorType") &&
444 !TyEl->isSubClassOf("LLVMTruncatedElementVectorType")) ||
445 VT == MVT::iAny || VT == MVT::vAny) &&
446 "Expected iAny or vAny type");
448 VT = getValueType(TyEl->getValueAsDef("VT"));
450 if (EVT(VT).isOverloaded()) {
451 OverloadedVTs.push_back(VT);
455 // Reject invalid types.
456 if (VT == MVT::isVoid)
457 throw "Intrinsic '" + DefName + " has void in result type list!";
459 IS.RetVTs.push_back(VT);
460 IS.RetTypeDefs.push_back(TyEl);
463 // Parse the list of parameter types.
464 TypeList = R->getValueAsListInit("ParamTypes");
465 for (unsigned i = 0, e = TypeList->getSize(); i != e; ++i) {
466 Record *TyEl = TypeList->getElementAsRecord(i);
467 assert(TyEl->isSubClassOf("LLVMType") && "Expected a type!");
468 MVT::SimpleValueType VT;
469 if (TyEl->isSubClassOf("LLVMMatchType")) {
470 unsigned MatchTy = TyEl->getValueAsInt("Number");
471 assert(MatchTy < OverloadedVTs.size() &&
472 "Invalid matching number!");
473 VT = OverloadedVTs[MatchTy];
474 // It only makes sense to use the extended and truncated vector element
475 // variants with iAny types; otherwise, if the intrinsic is not
476 // overloaded, all the types can be specified directly.
477 assert(((!TyEl->isSubClassOf("LLVMExtendedElementVectorType") &&
478 !TyEl->isSubClassOf("LLVMTruncatedElementVectorType")) ||
479 VT == MVT::iAny || VT == MVT::vAny) &&
480 "Expected iAny or vAny type");
482 VT = getValueType(TyEl->getValueAsDef("VT"));
484 if (EVT(VT).isOverloaded()) {
485 OverloadedVTs.push_back(VT);
489 // Reject invalid types.
490 if (VT == MVT::isVoid && i != e-1 /*void at end means varargs*/)
491 throw "Intrinsic '" + DefName + " has void in result type list!";
493 IS.ParamVTs.push_back(VT);
494 IS.ParamTypeDefs.push_back(TyEl);
497 // Parse the intrinsic properties.
498 ListInit *PropList = R->getValueAsListInit("Properties");
499 for (unsigned i = 0, e = PropList->getSize(); i != e; ++i) {
500 Record *Property = PropList->getElementAsRecord(i);
501 assert(Property->isSubClassOf("IntrinsicProperty") &&
502 "Expected a property!");
504 if (Property->getName() == "IntrNoMem")
506 else if (Property->getName() == "IntrReadArgMem")
508 else if (Property->getName() == "IntrReadMem")
510 else if (Property->getName() == "IntrReadWriteArgMem")
511 ModRef = ReadWriteArgMem;
512 else if (Property->getName() == "Commutative")
513 isCommutative = true;
514 else if (Property->getName() == "Throws")
516 else if (Property->isSubClassOf("NoCapture")) {
517 unsigned ArgNo = Property->getValueAsInt("ArgNo");
518 ArgumentAttributes.push_back(std::make_pair(ArgNo, NoCapture));
520 assert(0 && "Unknown property!");
523 // Sort the argument attributes for later benefit.
524 std::sort(ArgumentAttributes.begin(), ArgumentAttributes.end());