X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=lib%2FIR%2FFunction.cpp;h=cfb40b19c733123bc703da49442a235854fdce7f;hp=f462ec0890d8aa39fc44a00093a8f785132459f6;hb=fdf52d35570d49dc00730511e32218aecd828926;hpb=ada5f24b5fd5fd1c9be505ffca21035b54b8d538 diff --git a/lib/IR/Function.cpp b/lib/IR/Function.cpp index f462ec0890d..cfb40b19c73 100644 --- a/lib/IR/Function.cpp +++ b/lib/IR/Function.cpp @@ -19,10 +19,13 @@ #include "llvm/ADT/StringExtras.h" #include "llvm/CodeGen/ValueTypes.h" #include "llvm/IR/CallSite.h" +#include "llvm/IR/Constants.h" #include "llvm/IR/DerivedTypes.h" #include "llvm/IR/InstIterator.h" #include "llvm/IR/IntrinsicInst.h" #include "llvm/IR/LLVMContext.h" +#include "llvm/IR/MDBuilder.h" +#include "llvm/IR/Metadata.h" #include "llvm/IR/Module.h" #include "llvm/Support/ManagedStatic.h" #include "llvm/Support/RWMutex.h" @@ -32,8 +35,8 @@ using namespace llvm; // Explicit instantiations of SymbolTableListTraits since some of the methods // are not in the public header file... -template class llvm::SymbolTableListTraits; -template class llvm::SymbolTableListTraits; +template class llvm::SymbolTableListTraits; +template class llvm::SymbolTableListTraits; //===----------------------------------------------------------------------===// // Argument Implementation @@ -117,6 +120,12 @@ uint64_t Argument::getDereferenceableBytes() const { return getParent()->getDereferenceableBytes(getArgNo()+1); } +uint64_t Argument::getDereferenceableOrNullBytes() const { + assert(getType()->isPointerTy() && + "Only pointers have dereferenceable bytes"); + return getParent()->getDereferenceableOrNullBytes(getArgNo()+1); +} + /// hasNestAttr - Return true if this argument has the nest attribute on /// it in its containing function. bool Argument::hasNestAttr() const { @@ -145,10 +154,8 @@ bool Argument::hasNoCaptureAttr() const { /// it in its containing function. bool Argument::hasStructRetAttr() const { if (!getType()->isPointerTy()) return false; - if (this != getParent()->arg_begin()) - return false; // StructRet param must be first param return getParent()->getAttributes(). - hasAttribute(1, Attribute::StructRet); + hasAttribute(getArgNo()+1, Attribute::StructRet); } /// hasReturnedAttr - Return true if this argument has the returned attribute on @@ -206,18 +213,18 @@ void Argument::removeAttr(AttributeSet AS) { //===----------------------------------------------------------------------===// bool Function::isMaterializable() const { - return getGlobalObjectSubClassData(); + return getGlobalObjectSubClassData() & IsMaterializableBit; } -void Function::setIsMaterializable(bool V) { setGlobalObjectSubClassData(V); } +void Function::setIsMaterializable(bool V) { + setGlobalObjectBit(IsMaterializableBit, V); +} LLVMContext &Function::getContext() const { return getType()->getContext(); } -FunctionType *Function::getFunctionType() const { - return cast(getType()->getElementType()); -} +FunctionType *Function::getFunctionType() const { return Ty; } bool Function::isVarArg() const { return getFunctionType()->isVarArg(); @@ -228,11 +235,11 @@ Type *Function::getReturnType() const { } void Function::removeFromParent() { - getParent()->getFunctionList().remove(this); + getParent()->getFunctionList().remove(getIterator()); } void Function::eraseFromParent() { - getParent()->getFunctionList().erase(this); + getParent()->getFunctionList().erase(getIterator()); } //===----------------------------------------------------------------------===// @@ -241,11 +248,12 @@ void Function::eraseFromParent() { Function::Function(FunctionType *Ty, LinkageTypes Linkage, const Twine &name, Module *ParentModule) - : GlobalObject(PointerType::getUnqual(Ty), Value::FunctionVal, nullptr, 0, - Linkage, name) { + : GlobalObject(Ty, Value::FunctionVal, + OperandTraits::op_begin(this), 0, Linkage, name), + Ty(Ty) { assert(FunctionType::isValidReturnType(getReturnType()) && "invalid return type"); - setIsMaterializable(false); + setGlobalObjectSubClassData(0); SymTab = new ValueSymbolTable(); // If the function has arguments, mark them as lazily built. @@ -256,9 +264,10 @@ Function::Function(FunctionType *Ty, LinkageTypes Linkage, const Twine &name, ParentModule->getFunctionList().push_back(this); // Ensure intrinsics have the right parameter attributes. - if (unsigned IID = getIntrinsicID()) - setAttributes(Intrinsic::getAttributes(getContext(), Intrinsic::ID(IID))); - + // Note, the IntID field will have been set in Value::setName if this function + // name is a valid intrinsic ID. + if (IntID) + setAttributes(Intrinsic::getAttributes(getContext(), IntID)); } Function::~Function() { @@ -270,10 +279,6 @@ Function::~Function() { // Remove the function from the on-the-side GC table. clearGC(); - - // Remove the intrinsicID from the Cache. - if (getValueName() && isIntrinsic()) - getContext().pImpl->IntrinsicIDCache.erase(this); } void Function::BuildLazyArguments() const { @@ -320,9 +325,15 @@ void Function::dropAllReferences() { while (!BasicBlocks.empty()) BasicBlocks.begin()->eraseFromParent(); - // Prefix and prologue data are stored in a side table. - setPrefixData(nullptr); - setPrologueData(nullptr); + // Drop uses of any optional data (real or placeholder). + if (getNumOperands()) { + User::dropAllReferences(); + setNumHungOffUseOperands(0); + setValueSubclassData(getSubclassDataFromValue() & ~0xe); + } + + // Metadata is stored in a side-table. + clearMetadata(); } void Function::addAttribute(unsigned i, Attribute::AttrKind attr) { @@ -343,6 +354,18 @@ void Function::removeAttributes(unsigned i, AttributeSet attrs) { setAttributes(PAL); } +void Function::addDereferenceableAttr(unsigned i, uint64_t Bytes) { + AttributeSet PAL = getAttributes(); + PAL = PAL.addDereferenceableAttr(getContext(), i, Bytes); + setAttributes(PAL); +} + +void Function::addDereferenceableOrNullAttr(unsigned i, uint64_t Bytes) { + AttributeSet PAL = getAttributes(); + PAL = PAL.addDereferenceableOrNullAttr(getContext(), i, Bytes); + setAttributes(PAL); +} + // Maintain the GC name for each function in an on-the-side table. This saves // allocating an additional word in Function for programs which do not use GC // (i.e., most programs) at the cost of increased overhead for clients which do @@ -386,55 +409,31 @@ void Function::clearGC() { } } -/// copyAttributesFrom - copy all additional attributes (those not needed to -/// create a Function) from the Function Src to this one. +/// Copy all additional attributes (those not needed to create a Function) from +/// the Function Src to this one. void Function::copyAttributesFrom(const GlobalValue *Src) { - assert(isa(Src) && "Expected a Function!"); GlobalObject::copyAttributesFrom(Src); - const Function *SrcF = cast(Src); + const Function *SrcF = dyn_cast(Src); + if (!SrcF) + return; + setCallingConv(SrcF->getCallingConv()); setAttributes(SrcF->getAttributes()); if (SrcF->hasGC()) setGC(SrcF->getGC()); else clearGC(); + if (SrcF->hasPersonalityFn()) + setPersonalityFn(SrcF->getPersonalityFn()); if (SrcF->hasPrefixData()) setPrefixData(SrcF->getPrefixData()); - else - setPrefixData(nullptr); if (SrcF->hasPrologueData()) setPrologueData(SrcF->getPrologueData()); - else - setPrologueData(nullptr); -} - -/// getIntrinsicID - This method returns the ID number of the specified -/// function, or Intrinsic::not_intrinsic if the function is not an -/// intrinsic, or if the pointer is null. This value is always defined to be -/// zero to allow easy checking for whether a function is intrinsic or not. The -/// particular intrinsic functions which correspond to this value are defined in -/// llvm/Intrinsics.h. Results are cached in the LLVM context, subsequent -/// requests for the same ID return results much faster from the cache. -/// -unsigned Function::getIntrinsicID() const { - const ValueName *ValName = this->getValueName(); - if (!ValName || !isIntrinsic()) - return 0; - - LLVMContextImpl::IntrinsicIDCacheTy &IntrinsicIDCache = - getContext().pImpl->IntrinsicIDCache; - if (!IntrinsicIDCache.count(this)) { - unsigned Id = lookupIntrinsicID(); - IntrinsicIDCache[this]=Id; - return Id; - } - return IntrinsicIDCache[this]; } -/// This private method does the actual lookup of an intrinsic ID when the query -/// could not be answered from the cache. -unsigned Function::lookupIntrinsicID() const { - const ValueName *ValName = this->getValueName(); +/// \brief This does the actual lookup of an intrinsic ID which +/// matches the given function name. +static Intrinsic::ID lookupIntrinsicID(const ValueName *ValName) { unsigned Len = ValName->getKeyLength(); const char *Name = ValName->getKeyData(); @@ -442,7 +441,16 @@ unsigned Function::lookupIntrinsicID() const { #include "llvm/IR/Intrinsics.gen" #undef GET_FUNCTION_RECOGNIZER - return 0; + return Intrinsic::not_intrinsic; +} + +void Function::recalculateIntrinsicID() { + const ValueName *ValName = this->getValueName(); + if (!ValName || !isIntrinsic()) { + IntID = Intrinsic::not_intrinsic; + return; + } + IntID = lookupIntrinsicID(ValName); } /// Returns a stable mangling for the type specified for use in the name @@ -455,6 +463,10 @@ unsigned Function::lookupIntrinsicID() const { /// which can't be confused with it's prefix. This ensures we don't have /// collisions between two unrelated function types. Otherwise, you might /// parse ffXX as f(fXX) or f(fX)X. (X is a placeholder for any other type.) +/// Manglings of integers, floats, and vectors ('i', 'f', and 'v' prefix in most +/// cases) fall back to the MVT codepath, where they could be mangled to +/// 'x86mmx', for example; matching on derived types is not sufficient to mangle +/// everything. static std::string getMangledTypeStr(Type* Ty) { std::string Result; if (PointerType* PTyp = dyn_cast(Ty)) { @@ -464,10 +476,8 @@ static std::string getMangledTypeStr(Type* Ty) { Result += "a" + llvm::utostr(ATyp->getNumElements()) + getMangledTypeStr(ATyp->getElementType()); } else if (StructType* STyp = dyn_cast(Ty)) { - if (!STyp->isLiteral()) - Result += STyp->getName(); - else - llvm_unreachable("TODO: implement literal types"); + assert(!STyp->isLiteral() && "TODO: implement literal types"); + Result += STyp->getName(); } else if (FunctionType* FT = dyn_cast(Ty)) { Result += "f_" + getMangledTypeStr(FT->getReturnType()); for (size_t i = 0; i < FT->getNumParams(); i++) @@ -476,7 +486,10 @@ static std::string getMangledTypeStr(Type* Ty) { Result += "vararg"; // Ensure nested function types are distinguishable. Result += "f"; - } else if (Ty) + } else if (isa(Ty)) + Result += "v" + utostr(Ty->getVectorNumElements()) + + getMangledTypeStr(Ty->getVectorElementType()); + else if (Ty) Result += EVT::getEVT(Ty).getEVTString(); return Result; } @@ -525,19 +538,25 @@ enum IIT_Info { // Values from 16+ are only encodable with the inefficient encoding. IIT_V64 = 16, IIT_MMX = 17, - IIT_METADATA = 18, - IIT_EMPTYSTRUCT = 19, - IIT_STRUCT2 = 20, - IIT_STRUCT3 = 21, - IIT_STRUCT4 = 22, - IIT_STRUCT5 = 23, - IIT_EXTEND_ARG = 24, - IIT_TRUNC_ARG = 25, - IIT_ANYPTR = 26, - IIT_V1 = 27, - IIT_VARARG = 28, - IIT_HALF_VEC_ARG = 29, - IIT_SAME_VEC_WIDTH_ARG = 30 + IIT_TOKEN = 18, + IIT_METADATA = 19, + IIT_EMPTYSTRUCT = 20, + IIT_STRUCT2 = 21, + IIT_STRUCT3 = 22, + IIT_STRUCT4 = 23, + IIT_STRUCT5 = 24, + IIT_EXTEND_ARG = 25, + IIT_TRUNC_ARG = 26, + IIT_ANYPTR = 27, + IIT_V1 = 28, + IIT_VARARG = 29, + IIT_HALF_VEC_ARG = 30, + IIT_SAME_VEC_WIDTH_ARG = 31, + IIT_PTR_TO_ARG = 32, + IIT_VEC_OF_PTRS_TO_ELT = 33, + IIT_I128 = 34, + IIT_V512 = 35, + IIT_V1024 = 36 }; @@ -557,6 +576,9 @@ static void DecodeIITType(unsigned &NextElt, ArrayRef Infos, case IIT_MMX: OutputTable.push_back(IITDescriptor::get(IITDescriptor::MMX, 0)); return; + case IIT_TOKEN: + OutputTable.push_back(IITDescriptor::get(IITDescriptor::Token, 0)); + return; case IIT_METADATA: OutputTable.push_back(IITDescriptor::get(IITDescriptor::Metadata, 0)); return; @@ -584,6 +606,9 @@ static void DecodeIITType(unsigned &NextElt, ArrayRef Infos, case IIT_I64: OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer, 64)); return; + case IIT_I128: + OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer, 128)); + return; case IIT_V1: OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 1)); DecodeIITType(NextElt, Infos, OutputTable); @@ -612,6 +637,14 @@ static void DecodeIITType(unsigned &NextElt, ArrayRef Infos, OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 64)); DecodeIITType(NextElt, Infos, OutputTable); return; + case IIT_V512: + OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 512)); + DecodeIITType(NextElt, Infos, OutputTable); + return; + case IIT_V1024: + OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 1024)); + DecodeIITType(NextElt, Infos, OutputTable); + return; case IIT_PTR: OutputTable.push_back(IITDescriptor::get(IITDescriptor::Pointer, 0)); DecodeIITType(NextElt, Infos, OutputTable); @@ -651,6 +684,18 @@ static void DecodeIITType(unsigned &NextElt, ArrayRef Infos, ArgInfo)); return; } + case IIT_PTR_TO_ARG: { + unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]); + OutputTable.push_back(IITDescriptor::get(IITDescriptor::PtrToArgument, + ArgInfo)); + return; + } + case IIT_VEC_OF_PTRS_TO_ELT: { + unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]); + OutputTable.push_back(IITDescriptor::get(IITDescriptor::VecOfPtrsToElt, + ArgInfo)); + return; + } case IIT_EMPTYSTRUCT: OutputTable.push_back(IITDescriptor::get(IITDescriptor::Struct, 0)); return; @@ -717,6 +762,7 @@ static Type *DecodeFixedType(ArrayRef &Infos, case IITDescriptor::Void: return Type::getVoidTy(Context); case IITDescriptor::VarArg: return Type::getVoidTy(Context); case IITDescriptor::MMX: return Type::getX86_MMXTy(Context); + case IITDescriptor::Token: return Type::getTokenTy(Context); case IITDescriptor::Metadata: return Type::getMetadataTy(Context); case IITDescriptor::Half: return Type::getHalfTy(Context); case IITDescriptor::Float: return Type::getFloatTy(Context); @@ -758,13 +804,27 @@ static Type *DecodeFixedType(ArrayRef &Infos, case IITDescriptor::HalfVecArgument: return VectorType::getHalfElementsVectorType(cast( Tys[D.getArgumentNumber()])); - case IITDescriptor::SameVecWidthArgument: + case IITDescriptor::SameVecWidthArgument: { Type *EltTy = DecodeFixedType(Infos, Tys, Context); Type *Ty = Tys[D.getArgumentNumber()]; if (VectorType *VTy = dyn_cast(Ty)) { return VectorType::get(EltTy, VTy->getNumElements()); } llvm_unreachable("unhandled"); + } + case IITDescriptor::PtrToArgument: { + Type *Ty = Tys[D.getArgumentNumber()]; + return PointerType::getUnqual(Ty); + } + case IITDescriptor::VecOfPtrsToElt: { + Type *Ty = Tys[D.getArgumentNumber()]; + VectorType *VTy = dyn_cast(Ty); + if (!VTy) + llvm_unreachable("Expected an argument of Vector Type"); + Type *EltTy = VTy->getVectorElementType(); + return VectorType::get(PointerType::getUnqual(EltTy), + VTy->getNumElements()); + } } llvm_unreachable("unhandled"); } @@ -798,6 +858,18 @@ bool Intrinsic::isOverloaded(ID id) { #undef GET_INTRINSIC_OVERLOAD_TABLE } +bool Intrinsic::isLeaf(ID id) { + switch (id) { + default: + return true; + + case Intrinsic::experimental_gc_statepoint: + case Intrinsic::experimental_patchpoint_void: + case Intrinsic::experimental_patchpoint_i64: + return false; + } +} + /// This defines the "Intrinsic::getAttributes(ID id)" method. #define GET_INTRINSIC_ATTRIBUTES #include "llvm/IR/Intrinsics.gen" @@ -864,60 +936,82 @@ bool Function::callsFunctionThatReturnsTwice() const { return false; } +Constant *Function::getPersonalityFn() const { + assert(hasPersonalityFn() && getNumOperands()); + return cast(Op<0>()); +} + +void Function::setPersonalityFn(Constant *Fn) { + setHungoffOperand<0>(Fn); + setValueSubclassDataBit(3, Fn != nullptr); +} + Constant *Function::getPrefixData() const { - assert(hasPrefixData()); - const LLVMContextImpl::PrefixDataMapTy &PDMap = - getContext().pImpl->PrefixDataMap; - assert(PDMap.find(this) != PDMap.end()); - return cast(PDMap.find(this)->second->getReturnValue()); + assert(hasPrefixData() && getNumOperands()); + return cast(Op<1>()); } void Function::setPrefixData(Constant *PrefixData) { - if (!PrefixData && !hasPrefixData()) - return; - - unsigned SCData = getSubclassDataFromValue(); - LLVMContextImpl::PrefixDataMapTy &PDMap = getContext().pImpl->PrefixDataMap; - ReturnInst *&PDHolder = PDMap[this]; - if (PrefixData) { - if (PDHolder) - PDHolder->setOperand(0, PrefixData); - else - PDHolder = ReturnInst::Create(getContext(), PrefixData); - SCData |= (1<<1); - } else { - delete PDHolder; - PDMap.erase(this); - SCData &= ~(1<<1); - } - setValueSubclassData(SCData); + setHungoffOperand<1>(PrefixData); + setValueSubclassDataBit(1, PrefixData != nullptr); } Constant *Function::getPrologueData() const { - assert(hasPrologueData()); - const LLVMContextImpl::PrologueDataMapTy &SOMap = - getContext().pImpl->PrologueDataMap; - assert(SOMap.find(this) != SOMap.end()); - return cast(SOMap.find(this)->second->getReturnValue()); + assert(hasPrologueData() && getNumOperands()); + return cast(Op<2>()); } void Function::setPrologueData(Constant *PrologueData) { - if (!PrologueData && !hasPrologueData()) - return; - - unsigned PDData = getSubclassDataFromValue(); - LLVMContextImpl::PrologueDataMapTy &PDMap = getContext().pImpl->PrologueDataMap; - ReturnInst *&PDHolder = PDMap[this]; - if (PrologueData) { - if (PDHolder) - PDHolder->setOperand(0, PrologueData); - else - PDHolder = ReturnInst::Create(getContext(), PrologueData); - PDData |= (1<<2); - } else { - delete PDHolder; - PDMap.erase(this); - PDData &= ~(1<<2); + setHungoffOperand<2>(PrologueData); + setValueSubclassDataBit(2, PrologueData != nullptr); +} + +void Function::allocHungoffUselist() { + // If we've already allocated a uselist, stop here. + if (getNumOperands()) + return; + + allocHungoffUses(3, /*IsPhi=*/ false); + setNumHungOffUseOperands(3); + + // Initialize the uselist with placeholder operands to allow traversal. + auto *CPN = ConstantPointerNull::get(Type::getInt1PtrTy(getContext(), 0)); + Op<0>().set(CPN); + Op<1>().set(CPN); + Op<2>().set(CPN); +} + +template +void Function::setHungoffOperand(Constant *C) { + if (C) { + allocHungoffUselist(); + Op().set(C); + } else if (getNumOperands()) { + Op().set( + ConstantPointerNull::get(Type::getInt1PtrTy(getContext(), 0))); } - setValueSubclassData(PDData); +} + +void Function::setValueSubclassDataBit(unsigned Bit, bool On) { + assert(Bit < 16 && "SubclassData contains only 16 bits"); + if (On) + setValueSubclassData(getSubclassDataFromValue() | (1 << Bit)); + else + setValueSubclassData(getSubclassDataFromValue() & ~(1 << Bit)); +} + +void Function::setEntryCount(uint64_t Count) { + MDBuilder MDB(getContext()); + setMetadata(LLVMContext::MD_prof, MDB.createFunctionEntryCount(Count)); +} + +Optional Function::getEntryCount() const { + MDNode *MD = getMetadata(LLVMContext::MD_prof); + if (MD && MD->getOperand(0)) + if (MDString *MDS = dyn_cast(MD->getOperand(0))) + if (MDS->getString().equals("function_entry_count")) { + ConstantInt *CI = mdconst::extract(MD->getOperand(1)); + return CI->getValue().getZExtValue(); + } + return None; }