X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FIR%2FFunction.cpp;h=b50ad1262c69904f1cc40f534cf368671e554a32;hb=8b081412aa734ce4b02cb9a84754f715a519dca2;hp=fbf94b364afb2c28df4af75782720ad8904f38a0;hpb=4e89fd0f4b4c24d225b80f93b34d7a665473f2d5;p=oota-llvm.git diff --git a/lib/IR/Function.cpp b/lib/IR/Function.cpp index fbf94b364af..b50ad1262c6 100644 --- a/lib/IR/Function.cpp +++ b/lib/IR/Function.cpp @@ -19,11 +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/LeakDetector.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" @@ -46,20 +48,13 @@ Argument::Argument(Type *Ty, const Twine &Name, Function *Par) : Value(Ty, Value::ArgumentVal) { Parent = nullptr; - // Make sure that we get added to a function - LeakDetector::addGarbageObject(this); - if (Par) Par->getArgumentList().push_back(this); setName(Name); } void Argument::setParent(Function *parent) { - if (getParent()) - LeakDetector::addGarbageObject(this); Parent = parent; - if (getParent()) - LeakDetector::removeGarbageObject(this); } /// getArgNo - Return the index of this formal argument in its containing @@ -125,6 +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 { @@ -153,10 +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 @@ -214,18 +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(); @@ -249,27 +248,26 @@ 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(PointerType::getUnqual(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. if (Ty->getNumParams()) setValueSubclassData(1); // Set the "has lazy arguments" bit. - // Make sure that we get added to a function - LeakDetector::addGarbageObject(this); - if (ParentModule) 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() { @@ -282,9 +280,8 @@ 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); + // FIXME: needed by operator delete + setFunctionNumOperands(1); } void Function::BuildLazyArguments() const { @@ -298,7 +295,7 @@ void Function::BuildLazyArguments() const { // Clear the lazy arguments bit. unsigned SDC = getSubclassDataFromValue(); - const_cast(this)->setValueSubclassData(SDC &= ~1); + const_cast(this)->setValueSubclassData(SDC &= ~(1<<0)); } size_t Function::arg_size() const { @@ -309,11 +306,7 @@ bool Function::arg_empty() const { } void Function::setParent(Module *parent) { - if (getParent()) - LeakDetector::addGarbageObject(this); Parent = parent; - if (getParent()) - LeakDetector::removeGarbageObject(this); } // dropAllReferences() - This function causes all the subinstructions to "let @@ -335,8 +328,14 @@ void Function::dropAllReferences() { while (!BasicBlocks.empty()) BasicBlocks.begin()->eraseFromParent(); - // Prefix data is stored in a side table. + // Prefix and prologue data are stored in a side table. setPrefixData(nullptr); + setPrologueData(nullptr); + + // Metadata is stored in a side-table. + clearMetadata(); + + setPersonalityFn(nullptr); } void Function::addAttribute(unsigned i, Attribute::AttrKind attr) { @@ -357,6 +356,18 @@ 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 @@ -416,35 +427,19 @@ void Function::copyAttributesFrom(const GlobalValue *Src) { setPrefixData(SrcF->getPrefixData()); else setPrefixData(nullptr); + if (SrcF->hasPrologueData()) + setPrologueData(SrcF->getPrologueData()); + else + setPrologueData(nullptr); + if (SrcF->hasPersonalityFn()) + setPersonalityFn(SrcF->getPersonalityFn()); + else + setPersonalityFn(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(); @@ -452,7 +447,16 @@ 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 @@ -465,6 +469,10 @@ 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)) { @@ -474,10 +482,8 @@ 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++) @@ -547,7 +553,10 @@ enum IIT_Info { IIT_V1 = 27, IIT_VARARG = 28, IIT_HALF_VEC_ARG = 29, - IIT_SAME_VEC_WIDTH_ARG = 30 + IIT_SAME_VEC_WIDTH_ARG = 30, + IIT_PTR_TO_ARG = 31, + IIT_VEC_OF_PTRS_TO_ELT = 32, + IIT_I128 = 33 }; @@ -594,6 +603,9 @@ 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); @@ -661,6 +673,18 @@ 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; @@ -768,13 +792,27 @@ 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"); } @@ -808,6 +846,18 @@ 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" @@ -894,11 +944,75 @@ void Function::setPrefixData(Constant *PrefixData) { PDHolder->setOperand(0, PrefixData); else PDHolder = ReturnInst::Create(getContext(), PrefixData); - SCData |= 2; + SCData |= (1<<1); } else { delete PDHolder; PDMap.erase(this); - SCData &= ~2; + SCData &= ~(1<<1); } setValueSubclassData(SCData); } + +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()); +} + +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); + } + setValueSubclassData(PDData); +} + +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; +} + +void Function::setPersonalityFn(Constant *C) { + if (!C) { + if (hasPersonalityFn()) { + // Note, the num operands is used to compute the offset of the operand, so + // the order here matters. Clearing the operand then clearing the num + // operands ensures we have the correct offset to the operand. + Op<0>().set(nullptr); + setFunctionNumOperands(0); + } + } else { + // Note, the num operands is used to compute the offset of the operand, so + // the order here matters. We need to set num operands to 1 first so that + // we get the correct offset to the first operand when we set it. + if (!hasPersonalityFn()) + setFunctionNumOperands(1); + Op<0>().set(C); + } +}