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- //===- CodeGenTarget.cpp - CodeGen Target Class Wrapper -------------------===//
- //
- // The LLVM Compiler Infrastructure
- //
- // This file is distributed under the University of Illinois Open Source
- // License. See LICENSE.TXT for details.
- //
- //===----------------------------------------------------------------------===//
- //
- // This class wraps target description classes used by the various code
- // generation TableGen backends. This makes it easier to access the data and
- // provides a single place that needs to check it for validity. All of these
- // classes throw exceptions on error conditions.
- //
- //===----------------------------------------------------------------------===//
- #include "CodeGenTarget.h"
- #include "CodeGenIntrinsics.h"
- #include "CodeGenSchedule.h"
- #include "llvm/TableGen/Record.h"
- #include "llvm/ADT/StringExtras.h"
- #include "llvm/ADT/STLExtras.h"
- #include "llvm/Support/CommandLine.h"
- #include <algorithm>
- using namespace llvm;
- static cl::opt<unsigned>
- AsmParserNum("asmparsernum", cl::init(0),
- cl::desc("Make -gen-asm-parser emit assembly parser #N"));
- static cl::opt<unsigned>
- AsmWriterNum("asmwriternum", cl::init(0),
- cl::desc("Make -gen-asm-writer emit assembly writer #N"));
- /// getValueType - Return the MVT::SimpleValueType that the specified TableGen
- /// record corresponds to.
- MVT::SimpleValueType llvm::getValueType(Record *Rec) {
- return (MVT::SimpleValueType)Rec->getValueAsInt("Value");
- }
- std::string llvm::getName(MVT::SimpleValueType T) {
- switch (T) {
- case MVT::Other: return "UNKNOWN";
- case MVT::iPTR: return "TLI.getPointerTy()";
- case MVT::iPTRAny: return "TLI.getPointerTy()";
- default: return getEnumName(T);
- }
- }
- std::string llvm::getEnumName(MVT::SimpleValueType T) {
- switch (T) {
- case MVT::Other: return "MVT::Other";
- case MVT::i1: return "MVT::i1";
- case MVT::i8: return "MVT::i8";
- case MVT::i16: return "MVT::i16";
- case MVT::i32: return "MVT::i32";
- case MVT::i64: return "MVT::i64";
- case MVT::i128: return "MVT::i128";
- case MVT::iAny: return "MVT::iAny";
- case MVT::fAny: return "MVT::fAny";
- case MVT::vAny: return "MVT::vAny";
- case MVT::f16: return "MVT::f16";
- case MVT::f32: return "MVT::f32";
- case MVT::f64: return "MVT::f64";
- case MVT::f80: return "MVT::f80";
- case MVT::f128: return "MVT::f128";
- case MVT::ppcf128: return "MVT::ppcf128";
- case MVT::x86mmx: return "MVT::x86mmx";
- case MVT::Glue: return "MVT::Glue";
- case MVT::isVoid: return "MVT::isVoid";
- case MVT::v2i8: return "MVT::v2i8";
- case MVT::v4i8: return "MVT::v4i8";
- case MVT::v8i8: return "MVT::v8i8";
- case MVT::v16i8: return "MVT::v16i8";
- case MVT::v32i8: return "MVT::v32i8";
- case MVT::v2i16: return "MVT::v2i16";
- case MVT::v4i16: return "MVT::v4i16";
- case MVT::v8i16: return "MVT::v8i16";
- case MVT::v16i16: return "MVT::v16i16";
- case MVT::v2i32: return "MVT::v2i32";
- case MVT::v4i32: return "MVT::v4i32";
- case MVT::v8i32: return "MVT::v8i32";
- case MVT::v1i64: return "MVT::v1i64";
- case MVT::v2i64: return "MVT::v2i64";
- case MVT::v4i64: return "MVT::v4i64";
- case MVT::v8i64: return "MVT::v8i64";
- case MVT::v2f16: return "MVT::v2f16";
- case MVT::v2f32: return "MVT::v2f32";
- case MVT::v4f32: return "MVT::v4f32";
- case MVT::v8f32: return "MVT::v8f32";
- case MVT::v2f64: return "MVT::v2f64";
- case MVT::v4f64: return "MVT::v4f64";
- case MVT::Metadata: return "MVT::Metadata";
- case MVT::iPTR: return "MVT::iPTR";
- case MVT::iPTRAny: return "MVT::iPTRAny";
- case MVT::Untyped: return "MVT::Untyped";
- default: llvm_unreachable("ILLEGAL VALUE TYPE!");
- }
- }
- /// getQualifiedName - Return the name of the specified record, with a
- /// namespace qualifier if the record contains one.
- ///
- std::string llvm::getQualifiedName(const Record *R) {
- std::string Namespace;
- if (R->getValue("Namespace"))
- Namespace = R->getValueAsString("Namespace");
- if (Namespace.empty()) return R->getName();
- return Namespace + "::" + R->getName();
- }
- /// getTarget - Return the current instance of the Target class.
- ///
- CodeGenTarget::CodeGenTarget(RecordKeeper &records)
- : Records(records), RegBank(0), SchedModels(0) {
- std::vector<Record*> Targets = Records.getAllDerivedDefinitions("Target");
- if (Targets.size() == 0)
- throw std::string("ERROR: No 'Target' subclasses defined!");
- if (Targets.size() != 1)
- throw std::string("ERROR: Multiple subclasses of Target defined!");
- TargetRec = Targets[0];
- }
- CodeGenTarget::~CodeGenTarget() {
- delete RegBank;
- delete SchedModels;
- }
- const std::string &CodeGenTarget::getName() const {
- return TargetRec->getName();
- }
- std::string CodeGenTarget::getInstNamespace() const {
- for (inst_iterator i = inst_begin(), e = inst_end(); i != e; ++i) {
- // Make sure not to pick up "TargetOpcode" by accidentally getting
- // the namespace off the PHI instruction or something.
- if ((*i)->Namespace != "TargetOpcode")
- return (*i)->Namespace;
- }
- return "";
- }
- Record *CodeGenTarget::getInstructionSet() const {
- return TargetRec->getValueAsDef("InstructionSet");
- }
- /// getAsmParser - Return the AssemblyParser definition for this target.
- ///
- Record *CodeGenTarget::getAsmParser() const {
- std::vector<Record*> LI = TargetRec->getValueAsListOfDefs("AssemblyParsers");
- if (AsmParserNum >= LI.size())
- throw "Target does not have an AsmParser #" + utostr(AsmParserNum) + "!";
- return LI[AsmParserNum];
- }
- /// getAsmParserVariant - Return the AssmblyParserVariant definition for
- /// this target.
- ///
- Record *CodeGenTarget::getAsmParserVariant(unsigned i) const {
- std::vector<Record*> LI =
- TargetRec->getValueAsListOfDefs("AssemblyParserVariants");
- if (i >= LI.size())
- throw "Target does not have an AsmParserVariant #" + utostr(i) + "!";
- return LI[i];
- }
- /// getAsmParserVariantCount - Return the AssmblyParserVariant definition
- /// available for this target.
- ///
- unsigned CodeGenTarget::getAsmParserVariantCount() const {
- std::vector<Record*> LI =
- TargetRec->getValueAsListOfDefs("AssemblyParserVariants");
- return LI.size();
- }
- /// getAsmWriter - Return the AssemblyWriter definition for this target.
- ///
- Record *CodeGenTarget::getAsmWriter() const {
- std::vector<Record*> LI = TargetRec->getValueAsListOfDefs("AssemblyWriters");
- if (AsmWriterNum >= LI.size())
- throw "Target does not have an AsmWriter #" + utostr(AsmWriterNum) + "!";
- return LI[AsmWriterNum];
- }
- CodeGenRegBank &CodeGenTarget::getRegBank() const {
- if (!RegBank)
- RegBank = new CodeGenRegBank(Records);
- return *RegBank;
- }
- void CodeGenTarget::ReadRegAltNameIndices() const {
- RegAltNameIndices = Records.getAllDerivedDefinitions("RegAltNameIndex");
- std::sort(RegAltNameIndices.begin(), RegAltNameIndices.end(), LessRecord());
- }
- /// getRegisterByName - If there is a register with the specific AsmName,
- /// return it.
- const CodeGenRegister *CodeGenTarget::getRegisterByName(StringRef Name) const {
- const std::vector<CodeGenRegister*> &Regs = getRegBank().getRegisters();
- for (unsigned i = 0, e = Regs.size(); i != e; ++i)
- if (Regs[i]->TheDef->getValueAsString("AsmName") == Name)
- return Regs[i];
- return 0;
- }
- std::vector<MVT::SimpleValueType> CodeGenTarget::
- getRegisterVTs(Record *R) const {
- const CodeGenRegister *Reg = getRegBank().getReg(R);
- std::vector<MVT::SimpleValueType> Result;
- ArrayRef<CodeGenRegisterClass*> RCs = getRegBank().getRegClasses();
- for (unsigned i = 0, e = RCs.size(); i != e; ++i) {
- const CodeGenRegisterClass &RC = *RCs[i];
- if (RC.contains(Reg)) {
- const std::vector<MVT::SimpleValueType> &InVTs = RC.getValueTypes();
- Result.insert(Result.end(), InVTs.begin(), InVTs.end());
- }
- }
- // Remove duplicates.
- array_pod_sort(Result.begin(), Result.end());
- Result.erase(std::unique(Result.begin(), Result.end()), Result.end());
- return Result;
- }
- void CodeGenTarget::ReadLegalValueTypes() const {
- ArrayRef<CodeGenRegisterClass*> RCs = getRegBank().getRegClasses();
- for (unsigned i = 0, e = RCs.size(); i != e; ++i)
- for (unsigned ri = 0, re = RCs[i]->VTs.size(); ri != re; ++ri)
- LegalValueTypes.push_back(RCs[i]->VTs[ri]);
- // Remove duplicates.
- std::sort(LegalValueTypes.begin(), LegalValueTypes.end());
- LegalValueTypes.erase(std::unique(LegalValueTypes.begin(),
- LegalValueTypes.end()),
- LegalValueTypes.end());
- }
- CodeGenSchedModels &CodeGenTarget::getSchedModels() const {
- if (!SchedModels)
- SchedModels = new CodeGenSchedModels(Records, *this);
- return *SchedModels;
- }
- void CodeGenTarget::ReadInstructions() const {
- std::vector<Record*> Insts = Records.getAllDerivedDefinitions("Instruction");
- if (Insts.size() <= 2)
- throw std::string("No 'Instruction' subclasses defined!");
- // Parse the instructions defined in the .td file.
- for (unsigned i = 0, e = Insts.size(); i != e; ++i)
- Instructions[Insts[i]] = new CodeGenInstruction(Insts[i]);
- }
- static const CodeGenInstruction *
- GetInstByName(const char *Name,
- const DenseMap<const Record*, CodeGenInstruction*> &Insts,
- RecordKeeper &Records) {
- const Record *Rec = Records.getDef(Name);
- DenseMap<const Record*, CodeGenInstruction*>::const_iterator
- I = Insts.find(Rec);
- if (Rec == 0 || I == Insts.end())
- throw std::string("Could not find '") + Name + "' instruction!";
- return I->second;
- }
- namespace {
- /// SortInstByName - Sorting predicate to sort instructions by name.
- ///
- struct SortInstByName {
- bool operator()(const CodeGenInstruction *Rec1,
- const CodeGenInstruction *Rec2) const {
- return Rec1->TheDef->getName() < Rec2->TheDef->getName();
- }
- };
- }
- /// getInstructionsByEnumValue - Return all of the instructions defined by the
- /// target, ordered by their enum value.
- void CodeGenTarget::ComputeInstrsByEnum() const {
- // The ordering here must match the ordering in TargetOpcodes.h.
- const char *const FixedInstrs[] = {
- "PHI",
- "INLINEASM",
- "PROLOG_LABEL",
- "EH_LABEL",
- "GC_LABEL",
- "KILL",
- "EXTRACT_SUBREG",
- "INSERT_SUBREG",
- "IMPLICIT_DEF",
- "SUBREG_TO_REG",
- "COPY_TO_REGCLASS",
- "DBG_VALUE",
- "REG_SEQUENCE",
- "COPY",
- "BUNDLE",
- 0
- };
- const DenseMap<const Record*, CodeGenInstruction*> &Insts = getInstructions();
- for (const char *const *p = FixedInstrs; *p; ++p) {
- const CodeGenInstruction *Instr = GetInstByName(*p, Insts, Records);
- assert(Instr && "Missing target independent instruction");
- assert(Instr->Namespace == "TargetOpcode" && "Bad namespace");
- InstrsByEnum.push_back(Instr);
- }
- unsigned EndOfPredefines = InstrsByEnum.size();
- for (DenseMap<const Record*, CodeGenInstruction*>::const_iterator
- I = Insts.begin(), E = Insts.end(); I != E; ++I) {
- const CodeGenInstruction *CGI = I->second;
- if (CGI->Namespace != "TargetOpcode")
- InstrsByEnum.push_back(CGI);
- }
- assert(InstrsByEnum.size() == Insts.size() && "Missing predefined instr");
- // All of the instructions are now in random order based on the map iteration.
- // Sort them by name.
- std::sort(InstrsByEnum.begin()+EndOfPredefines, InstrsByEnum.end(),
- SortInstByName());
- }
- /// isLittleEndianEncoding - Return whether this target encodes its instruction
- /// in little-endian format, i.e. bits laid out in the order [0..n]
- ///
- bool CodeGenTarget::isLittleEndianEncoding() const {
- return getInstructionSet()->getValueAsBit("isLittleEndianEncoding");
- }
- //===----------------------------------------------------------------------===//
- // ComplexPattern implementation
- //
- ComplexPattern::ComplexPattern(Record *R) {
- Ty = ::getValueType(R->getValueAsDef("Ty"));
- NumOperands = R->getValueAsInt("NumOperands");
- SelectFunc = R->getValueAsString("SelectFunc");
- RootNodes = R->getValueAsListOfDefs("RootNodes");
- // Parse the properties.
- Properties = 0;
- std::vector<Record*> PropList = R->getValueAsListOfDefs("Properties");
- for (unsigned i = 0, e = PropList.size(); i != e; ++i)
- if (PropList[i]->getName() == "SDNPHasChain") {
- Properties |= 1 << SDNPHasChain;
- } else if (PropList[i]->getName() == "SDNPOptInGlue") {
- Properties |= 1 << SDNPOptInGlue;
- } else if (PropList[i]->getName() == "SDNPMayStore") {
- Properties |= 1 << SDNPMayStore;
- } else if (PropList[i]->getName() == "SDNPMayLoad") {
- Properties |= 1 << SDNPMayLoad;
- } else if (PropList[i]->getName() == "SDNPSideEffect") {
- Properties |= 1 << SDNPSideEffect;
- } else if (PropList[i]->getName() == "SDNPMemOperand") {
- Properties |= 1 << SDNPMemOperand;
- } else if (PropList[i]->getName() == "SDNPVariadic") {
- Properties |= 1 << SDNPVariadic;
- } else if (PropList[i]->getName() == "SDNPWantRoot") {
- Properties |= 1 << SDNPWantRoot;
- } else if (PropList[i]->getName() == "SDNPWantParent") {
- Properties |= 1 << SDNPWantParent;
- } else {
- errs() << "Unsupported SD Node property '" << PropList[i]->getName()
- << "' on ComplexPattern '" << R->getName() << "'!\n";
- exit(1);
- }
- }
- //===----------------------------------------------------------------------===//
- // CodeGenIntrinsic Implementation
- //===----------------------------------------------------------------------===//
- std::vector<CodeGenIntrinsic> llvm::LoadIntrinsics(const RecordKeeper &RC,
- bool TargetOnly) {
- std::vector<Record*> I = RC.getAllDerivedDefinitions("Intrinsic");
- std::vector<CodeGenIntrinsic> Result;
- for (unsigned i = 0, e = I.size(); i != e; ++i) {
- bool isTarget = I[i]->getValueAsBit("isTarget");
- if (isTarget == TargetOnly)
- Result.push_back(CodeGenIntrinsic(I[i]));
- }
- return Result;
- }
- CodeGenIntrinsic::CodeGenIntrinsic(Record *R) {
- TheDef = R;
- std::string DefName = R->getName();
- ModRef = ReadWriteMem;
- isOverloaded = false;
- isCommutative = false;
- canThrow = false;
- isNoReturn = false;
- if (DefName.size() <= 4 ||
- std::string(DefName.begin(), DefName.begin() + 4) != "int_")
- throw "Intrinsic '" + DefName + "' does not start with 'int_'!";
- EnumName = std::string(DefName.begin()+4, DefName.end());
- if (R->getValue("GCCBuiltinName")) // Ignore a missing GCCBuiltinName field.
- GCCBuiltinName = R->getValueAsString("GCCBuiltinName");
- TargetPrefix = R->getValueAsString("TargetPrefix");
- Name = R->getValueAsString("LLVMName");
- if (Name == "") {
- // If an explicit name isn't specified, derive one from the DefName.
- Name = "llvm.";
- for (unsigned i = 0, e = EnumName.size(); i != e; ++i)
- Name += (EnumName[i] == '_') ? '.' : EnumName[i];
- } else {
- // Verify it starts with "llvm.".
- if (Name.size() <= 5 ||
- std::string(Name.begin(), Name.begin() + 5) != "llvm.")
- throw "Intrinsic '" + DefName + "'s name does not start with 'llvm.'!";
- }
- // If TargetPrefix is specified, make sure that Name starts with
- // "llvm.<targetprefix>.".
- if (!TargetPrefix.empty()) {
- if (Name.size() < 6+TargetPrefix.size() ||
- std::string(Name.begin() + 5, Name.begin() + 6 + TargetPrefix.size())
- != (TargetPrefix + "."))
- throw "Intrinsic '" + DefName + "' does not start with 'llvm." +
- TargetPrefix + ".'!";
- }
- // Parse the list of return types.
- std::vector<MVT::SimpleValueType> OverloadedVTs;
- ListInit *TypeList = R->getValueAsListInit("RetTypes");
- for (unsigned i = 0, e = TypeList->getSize(); i != e; ++i) {
- Record *TyEl = TypeList->getElementAsRecord(i);
- assert(TyEl->isSubClassOf("LLVMType") && "Expected a type!");
- MVT::SimpleValueType VT;
- if (TyEl->isSubClassOf("LLVMMatchType")) {
- unsigned MatchTy = TyEl->getValueAsInt("Number");
- assert(MatchTy < OverloadedVTs.size() &&
- "Invalid matching number!");
- VT = OverloadedVTs[MatchTy];
- // It only makes sense to use the extended and truncated vector element
- // variants with iAny types; otherwise, if the intrinsic is not
- // overloaded, all the types can be specified directly.
- assert(((!TyEl->isSubClassOf("LLVMExtendedElementVectorType") &&
- !TyEl->isSubClassOf("LLVMTruncatedElementVectorType")) ||
- VT == MVT::iAny || VT == MVT::vAny) &&
- "Expected iAny or vAny type");
- } else {
- VT = getValueType(TyEl->getValueAsDef("VT"));
- }
- if (EVT(VT).isOverloaded()) {
- OverloadedVTs.push_back(VT);
- isOverloaded = true;
- }
- // Reject invalid types.
- if (VT == MVT::isVoid)
- throw "Intrinsic '" + DefName + " has void in result type list!";
- IS.RetVTs.push_back(VT);
- IS.RetTypeDefs.push_back(TyEl);
- }
- // Parse the list of parameter types.
- TypeList = R->getValueAsListInit("ParamTypes");
- for (unsigned i = 0, e = TypeList->getSize(); i != e; ++i) {
- Record *TyEl = TypeList->getElementAsRecord(i);
- assert(TyEl->isSubClassOf("LLVMType") && "Expected a type!");
- MVT::SimpleValueType VT;
- if (TyEl->isSubClassOf("LLVMMatchType")) {
- unsigned MatchTy = TyEl->getValueAsInt("Number");
- assert(MatchTy < OverloadedVTs.size() &&
- "Invalid matching number!");
- VT = OverloadedVTs[MatchTy];
- // It only makes sense to use the extended and truncated vector element
- // variants with iAny types; otherwise, if the intrinsic is not
- // overloaded, all the types can be specified directly.
- assert(((!TyEl->isSubClassOf("LLVMExtendedElementVectorType") &&
- !TyEl->isSubClassOf("LLVMTruncatedElementVectorType")) ||
- VT == MVT::iAny || VT == MVT::vAny) &&
- "Expected iAny or vAny type");
- } else
- VT = getValueType(TyEl->getValueAsDef("VT"));
- if (EVT(VT).isOverloaded()) {
- OverloadedVTs.push_back(VT);
- isOverloaded = true;
- }
- // Reject invalid types.
- if (VT == MVT::isVoid && i != e-1 /*void at end means varargs*/)
- throw "Intrinsic '" + DefName + " has void in result type list!";
- IS.ParamVTs.push_back(VT);
- IS.ParamTypeDefs.push_back(TyEl);
- }
- // Parse the intrinsic properties.
- ListInit *PropList = R->getValueAsListInit("Properties");
- for (unsigned i = 0, e = PropList->getSize(); i != e; ++i) {
- Record *Property = PropList->getElementAsRecord(i);
- assert(Property->isSubClassOf("IntrinsicProperty") &&
- "Expected a property!");
- if (Property->getName() == "IntrNoMem")
- ModRef = NoMem;
- else if (Property->getName() == "IntrReadArgMem")
- ModRef = ReadArgMem;
- else if (Property->getName() == "IntrReadMem")
- ModRef = ReadMem;
- else if (Property->getName() == "IntrReadWriteArgMem")
- ModRef = ReadWriteArgMem;
- else if (Property->getName() == "Commutative")
- isCommutative = true;
- else if (Property->getName() == "Throws")
- canThrow = true;
- else if (Property->getName() == "IntrNoReturn")
- isNoReturn = true;
- else if (Property->isSubClassOf("NoCapture")) {
- unsigned ArgNo = Property->getValueAsInt("ArgNo");
- ArgumentAttributes.push_back(std::make_pair(ArgNo, NoCapture));
- } else
- llvm_unreachable("Unknown property!");
- }
- // Sort the argument attributes for later benefit.
- std::sort(ArgumentAttributes.begin(), ArgumentAttributes.end());
- }
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