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diff --git a/contrib/llvm/lib/IR/Function.cpp b/contrib/llvm/lib/IR/Function.cpp
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+//===- Function.cpp - Implement the Global object classes -----------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Function class for the IR library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/IR/Function.h"
+#include "LLVMContextImpl.h"
+#include "SymbolTableListTraitsImpl.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/None.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/IR/Argument.h"
+#include "llvm/IR/Attributes.h"
+#include "llvm/IR/BasicBlock.h"
+#include "llvm/IR/CallSite.h"
+#include "llvm/IR/Constant.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/IR/InstIterator.h"
+#include "llvm/IR/Instruction.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/IntrinsicInst.h"
+#include "llvm/IR/Intrinsics.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/MDBuilder.h"
+#include "llvm/IR/Metadata.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/SymbolTableListTraits.h"
+#include "llvm/IR/Type.h"
+#include "llvm/IR/Use.h"
+#include "llvm/IR/User.h"
+#include "llvm/IR/Value.h"
+#include "llvm/IR/ValueSymbolTable.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/ErrorHandling.h"
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+#include <cstdint>
+#include <cstring>
+#include <string>
+
+using namespace llvm;
+
+// Explicit instantiations of SymbolTableListTraits since some of the methods
+// are not in the public header file...
+template class llvm::SymbolTableListTraits<BasicBlock>;
+
+//===----------------------------------------------------------------------===//
+// Argument Implementation
+//===----------------------------------------------------------------------===//
+
+Argument::Argument(Type *Ty, const Twine &Name, Function *Par, unsigned ArgNo)
+ : Value(Ty, Value::ArgumentVal), Parent(Par), ArgNo(ArgNo) {
+ setName(Name);
+}
+
+void Argument::setParent(Function *parent) {
+ Parent = parent;
+}
+
+bool Argument::hasNonNullAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ if (getParent()->hasParamAttribute(getArgNo(), Attribute::NonNull))
+ return true;
+ else if (getDereferenceableBytes() > 0 &&
+ getType()->getPointerAddressSpace() == 0)
+ return true;
+ return false;
+}
+
+bool Argument::hasByValAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ return hasAttribute(Attribute::ByVal);
+}
+
+bool Argument::hasSwiftSelfAttr() const {
+ return getParent()->hasParamAttribute(getArgNo(), Attribute::SwiftSelf);
+}
+
+bool Argument::hasSwiftErrorAttr() const {
+ return getParent()->hasParamAttribute(getArgNo(), Attribute::SwiftError);
+}
+
+bool Argument::hasInAllocaAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ return hasAttribute(Attribute::InAlloca);
+}
+
+bool Argument::hasByValOrInAllocaAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ AttributeList Attrs = getParent()->getAttributes();
+ return Attrs.hasParamAttribute(getArgNo(), Attribute::ByVal) ||
+ Attrs.hasParamAttribute(getArgNo(), Attribute::InAlloca);
+}
+
+unsigned Argument::getParamAlignment() const {
+ assert(getType()->isPointerTy() && "Only pointers have alignments");
+ return getParent()->getParamAlignment(getArgNo());
+}
+
+uint64_t Argument::getDereferenceableBytes() const {
+ assert(getType()->isPointerTy() &&
+ "Only pointers have dereferenceable bytes");
+ return getParent()->getParamDereferenceableBytes(getArgNo());
+}
+
+uint64_t Argument::getDereferenceableOrNullBytes() const {
+ assert(getType()->isPointerTy() &&
+ "Only pointers have dereferenceable bytes");
+ return getParent()->getParamDereferenceableOrNullBytes(getArgNo());
+}
+
+bool Argument::hasNestAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ return hasAttribute(Attribute::Nest);
+}
+
+bool Argument::hasNoAliasAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ return hasAttribute(Attribute::NoAlias);
+}
+
+bool Argument::hasNoCaptureAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ return hasAttribute(Attribute::NoCapture);
+}
+
+bool Argument::hasStructRetAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ return hasAttribute(Attribute::StructRet);
+}
+
+bool Argument::hasReturnedAttr() const {
+ return hasAttribute(Attribute::Returned);
+}
+
+bool Argument::hasZExtAttr() const {
+ return hasAttribute(Attribute::ZExt);
+}
+
+bool Argument::hasSExtAttr() const {
+ return hasAttribute(Attribute::SExt);
+}
+
+bool Argument::onlyReadsMemory() const {
+ AttributeList Attrs = getParent()->getAttributes();
+ return Attrs.hasParamAttribute(getArgNo(), Attribute::ReadOnly) ||
+ Attrs.hasParamAttribute(getArgNo(), Attribute::ReadNone);
+}
+
+void Argument::addAttrs(AttrBuilder &B) {
+ AttributeList AL = getParent()->getAttributes();
+ AL = AL.addParamAttributes(Parent->getContext(), getArgNo(), B);
+ getParent()->setAttributes(AL);
+}
+
+void Argument::addAttr(Attribute::AttrKind Kind) {
+ getParent()->addParamAttr(getArgNo(), Kind);
+}
+
+void Argument::addAttr(Attribute Attr) {
+ getParent()->addParamAttr(getArgNo(), Attr);
+}
+
+void Argument::removeAttr(Attribute::AttrKind Kind) {
+ getParent()->removeParamAttr(getArgNo(), Kind);
+}
+
+bool Argument::hasAttribute(Attribute::AttrKind Kind) const {
+ return getParent()->hasParamAttribute(getArgNo(), Kind);
+}
+
+//===----------------------------------------------------------------------===//
+// Helper Methods in Function
+//===----------------------------------------------------------------------===//
+
+LLVMContext &Function::getContext() const {
+ return getType()->getContext();
+}
+
+void Function::removeFromParent() {
+ getParent()->getFunctionList().remove(getIterator());
+}
+
+void Function::eraseFromParent() {
+ getParent()->getFunctionList().erase(getIterator());
+}
+
+//===----------------------------------------------------------------------===//
+// Function Implementation
+//===----------------------------------------------------------------------===//
+
+Function::Function(FunctionType *Ty, LinkageTypes Linkage, const Twine &name,
+ Module *ParentModule)
+ : GlobalObject(Ty, Value::FunctionVal,
+ OperandTraits<Function>::op_begin(this), 0, Linkage, name),
+ NumArgs(Ty->getNumParams()) {
+ assert(FunctionType::isValidReturnType(getReturnType()) &&
+ "invalid return type");
+ setGlobalObjectSubClassData(0);
+
+ // We only need a symbol table for a function if the context keeps value names
+ if (!getContext().shouldDiscardValueNames())
+ SymTab = make_unique<ValueSymbolTable>();
+
+ // If the function has arguments, mark them as lazily built.
+ if (Ty->getNumParams())
+ setValueSubclassData(1); // Set the "has lazy arguments" bit.
+
+ if (ParentModule)
+ ParentModule->getFunctionList().push_back(this);
+
+ HasLLVMReservedName = getName().startswith("llvm.");
+ // Ensure intrinsics have the right parameter attributes.
+ // 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() {
+ dropAllReferences(); // After this it is safe to delete instructions.
+
+ // Delete all of the method arguments and unlink from symbol table...
+ if (Arguments)
+ clearArguments();
+
+ // Remove the function from the on-the-side GC table.
+ clearGC();
+}
+
+void Function::BuildLazyArguments() const {
+ // Create the arguments vector, all arguments start out unnamed.
+ auto *FT = getFunctionType();
+ if (NumArgs > 0) {
+ Arguments = std::allocator<Argument>().allocate(NumArgs);
+ for (unsigned i = 0, e = NumArgs; i != e; ++i) {
+ Type *ArgTy = FT->getParamType(i);
+ assert(!ArgTy->isVoidTy() && "Cannot have void typed arguments!");
+ new (Arguments + i) Argument(ArgTy, "", const_cast<Function *>(this), i);
+ }
+ }
+
+ // Clear the lazy arguments bit.
+ unsigned SDC = getSubclassDataFromValue();
+ const_cast<Function*>(this)->setValueSubclassData(SDC &= ~(1<<0));
+ assert(!hasLazyArguments());
+}
+
+static MutableArrayRef<Argument> makeArgArray(Argument *Args, size_t Count) {
+ return MutableArrayRef<Argument>(Args, Count);
+}
+
+void Function::clearArguments() {
+ for (Argument &A : makeArgArray(Arguments, NumArgs)) {
+ A.setName("");
+ A.~Argument();
+ }
+ std::allocator<Argument>().deallocate(Arguments, NumArgs);
+ Arguments = nullptr;
+}
+
+void Function::stealArgumentListFrom(Function &Src) {
+ assert(isDeclaration() && "Expected no references to current arguments");
+
+ // Drop the current arguments, if any, and set the lazy argument bit.
+ if (!hasLazyArguments()) {
+ assert(llvm::all_of(makeArgArray(Arguments, NumArgs),
+ [](const Argument &A) { return A.use_empty(); }) &&
+ "Expected arguments to be unused in declaration");
+ clearArguments();
+ setValueSubclassData(getSubclassDataFromValue() | (1 << 0));
+ }
+
+ // Nothing to steal if Src has lazy arguments.
+ if (Src.hasLazyArguments())
+ return;
+
+ // Steal arguments from Src, and fix the lazy argument bits.
+ assert(arg_size() == Src.arg_size());
+ Arguments = Src.Arguments;
+ Src.Arguments = nullptr;
+ for (Argument &A : makeArgArray(Arguments, NumArgs)) {
+ // FIXME: This does the work of transferNodesFromList inefficiently.
+ SmallString<128> Name;
+ if (A.hasName())
+ Name = A.getName();
+ if (!Name.empty())
+ A.setName("");
+ A.setParent(this);
+ if (!Name.empty())
+ A.setName(Name);
+ }
+
+ setValueSubclassData(getSubclassDataFromValue() & ~(1 << 0));
+ assert(!hasLazyArguments());
+ Src.setValueSubclassData(Src.getSubclassDataFromValue() | (1 << 0));
+}
+
+// dropAllReferences() - This function causes all the subinstructions to "let
+// go" of all references that they are maintaining. This allows one to
+// 'delete' a whole class at a time, even though there may be circular
+// references... first all references are dropped, and all use counts go to
+// zero. Then everything is deleted for real. Note that no operations are
+// valid on an object that has "dropped all references", except operator
+// delete.
+//
+void Function::dropAllReferences() {
+ setIsMaterializable(false);
+
+ for (BasicBlock &BB : *this)
+ BB.dropAllReferences();
+
+ // Delete all basic blocks. They are now unused, except possibly by
+ // blockaddresses, but BasicBlock's destructor takes care of those.
+ while (!BasicBlocks.empty())
+ BasicBlocks.begin()->eraseFromParent();
+
+ // 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 Kind) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.addAttribute(getContext(), i, Kind);
+ setAttributes(PAL);
+}
+
+void Function::addAttribute(unsigned i, Attribute Attr) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.addAttribute(getContext(), i, Attr);
+ setAttributes(PAL);
+}
+
+void Function::addAttributes(unsigned i, const AttrBuilder &Attrs) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.addAttributes(getContext(), i, Attrs);
+ setAttributes(PAL);
+}
+
+void Function::addParamAttr(unsigned ArgNo, Attribute::AttrKind Kind) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.addParamAttribute(getContext(), ArgNo, Kind);
+ setAttributes(PAL);
+}
+
+void Function::addParamAttr(unsigned ArgNo, Attribute Attr) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.addParamAttribute(getContext(), ArgNo, Attr);
+ setAttributes(PAL);
+}
+
+void Function::addParamAttrs(unsigned ArgNo, const AttrBuilder &Attrs) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.addParamAttributes(getContext(), ArgNo, Attrs);
+ setAttributes(PAL);
+}
+
+void Function::removeAttribute(unsigned i, Attribute::AttrKind Kind) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.removeAttribute(getContext(), i, Kind);
+ setAttributes(PAL);
+}
+
+void Function::removeAttribute(unsigned i, StringRef Kind) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.removeAttribute(getContext(), i, Kind);
+ setAttributes(PAL);
+}
+
+void Function::removeAttributes(unsigned i, const AttrBuilder &Attrs) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.removeAttributes(getContext(), i, Attrs);
+ setAttributes(PAL);
+}
+
+void Function::removeParamAttr(unsigned ArgNo, Attribute::AttrKind Kind) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.removeParamAttribute(getContext(), ArgNo, Kind);
+ setAttributes(PAL);
+}
+
+void Function::removeParamAttr(unsigned ArgNo, StringRef Kind) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.removeParamAttribute(getContext(), ArgNo, Kind);
+ setAttributes(PAL);
+}
+
+void Function::removeParamAttrs(unsigned ArgNo, const AttrBuilder &Attrs) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.removeParamAttributes(getContext(), ArgNo, Attrs);
+ setAttributes(PAL);
+}
+
+void Function::addDereferenceableAttr(unsigned i, uint64_t Bytes) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.addDereferenceableAttr(getContext(), i, Bytes);
+ setAttributes(PAL);
+}
+
+void Function::addDereferenceableParamAttr(unsigned ArgNo, uint64_t Bytes) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.addDereferenceableParamAttr(getContext(), ArgNo, Bytes);
+ setAttributes(PAL);
+}
+
+void Function::addDereferenceableOrNullAttr(unsigned i, uint64_t Bytes) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.addDereferenceableOrNullAttr(getContext(), i, Bytes);
+ setAttributes(PAL);
+}
+
+void Function::addDereferenceableOrNullParamAttr(unsigned ArgNo,
+ uint64_t Bytes) {
+ AttributeList PAL = getAttributes();
+ PAL = PAL.addDereferenceableOrNullParamAttr(getContext(), ArgNo, Bytes);
+ setAttributes(PAL);
+}
+
+const std::string &Function::getGC() const {
+ assert(hasGC() && "Function has no collector");
+ return getContext().getGC(*this);
+}
+
+void Function::setGC(std::string Str) {
+ setValueSubclassDataBit(14, !Str.empty());
+ getContext().setGC(*this, std::move(Str));
+}
+
+void Function::clearGC() {
+ if (!hasGC())
+ return;
+ getContext().deleteGC(*this);
+ setValueSubclassDataBit(14, false);
+}
+
+/// Copy all additional attributes (those not needed to create a Function) from
+/// the Function Src to this one.
+void Function::copyAttributesFrom(const Function *Src) {
+ GlobalObject::copyAttributesFrom(Src);
+ setCallingConv(Src->getCallingConv());
+ setAttributes(Src->getAttributes());
+ if (Src->hasGC())
+ setGC(Src->getGC());
+ else
+ clearGC();
+ if (Src->hasPersonalityFn())
+ setPersonalityFn(Src->getPersonalityFn());
+ if (Src->hasPrefixData())
+ setPrefixData(Src->getPrefixData());
+ if (Src->hasPrologueData())
+ setPrologueData(Src->getPrologueData());
+}
+
+/// Table of string intrinsic names indexed by enum value.
+static const char * const IntrinsicNameTable[] = {
+ "not_intrinsic",
+#define GET_INTRINSIC_NAME_TABLE
+#include "llvm/IR/Intrinsics.gen"
+#undef GET_INTRINSIC_NAME_TABLE
+};
+
+/// Table of per-target intrinsic name tables.
+#define GET_INTRINSIC_TARGET_DATA
+#include "llvm/IR/Intrinsics.gen"
+#undef GET_INTRINSIC_TARGET_DATA
+
+/// Find the segment of \c IntrinsicNameTable for intrinsics with the same
+/// target as \c Name, or the generic table if \c Name is not target specific.
+///
+/// Returns the relevant slice of \c IntrinsicNameTable
+static ArrayRef<const char *> findTargetSubtable(StringRef Name) {
+ assert(Name.startswith("llvm."));
+
+ ArrayRef<IntrinsicTargetInfo> Targets(TargetInfos);
+ // Drop "llvm." and take the first dotted component. That will be the target
+ // if this is target specific.
+ StringRef Target = Name.drop_front(5).split('.').first;
+ auto It = std::lower_bound(Targets.begin(), Targets.end(), Target,
+ [](const IntrinsicTargetInfo &TI,
+ StringRef Target) { return TI.Name < Target; });
+ // We've either found the target or just fall back to the generic set, which
+ // is always first.
+ const auto &TI = It != Targets.end() && It->Name == Target ? *It : Targets[0];
+ return makeArrayRef(&IntrinsicNameTable[1] + TI.Offset, TI.Count);
+}
+
+/// \brief This does the actual lookup of an intrinsic ID which
+/// matches the given function name.
+Intrinsic::ID Function::lookupIntrinsicID(StringRef Name) {
+ ArrayRef<const char *> NameTable = findTargetSubtable(Name);
+ int Idx = Intrinsic::lookupLLVMIntrinsicByName(NameTable, Name);
+ if (Idx == -1)
+ return Intrinsic::not_intrinsic;
+
+ // Intrinsic IDs correspond to the location in IntrinsicNameTable, but we have
+ // an index into a sub-table.
+ int Adjust = NameTable.data() - IntrinsicNameTable;
+ Intrinsic::ID ID = static_cast<Intrinsic::ID>(Idx + Adjust);
+
+ // If the intrinsic is not overloaded, require an exact match. If it is
+ // overloaded, require a prefix match.
+ bool IsPrefixMatch = Name.size() > strlen(NameTable[Idx]);
+ return IsPrefixMatch == isOverloaded(ID) ? ID : Intrinsic::not_intrinsic;
+}
+
+void Function::recalculateIntrinsicID() {
+ StringRef Name = getName();
+ if (!Name.startswith("llvm.")) {
+ HasLLVMReservedName = false;
+ IntID = Intrinsic::not_intrinsic;
+ return;
+ }
+ HasLLVMReservedName = true;
+ IntID = lookupIntrinsicID(Name);
+}
+
+/// Returns a stable mangling for the type specified for use in the name
+/// mangling scheme used by 'any' types in intrinsic signatures. The mangling
+/// of named types is simply their name. Manglings for unnamed types consist
+/// of a prefix ('p' for pointers, 'a' for arrays, 'f_' for functions)
+/// combined with the mangling of their component types. A vararg function
+/// type will have a suffix of 'vararg'. Since function types can contain
+/// other function types, we close a function type mangling with suffix 'f'
+/// 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<PointerType>(Ty)) {
+ Result += "p" + utostr(PTyp->getAddressSpace()) +
+ getMangledTypeStr(PTyp->getElementType());
+ } else if (ArrayType* ATyp = dyn_cast<ArrayType>(Ty)) {
+ Result += "a" + utostr(ATyp->getNumElements()) +
+ getMangledTypeStr(ATyp->getElementType());
+ } else if (StructType *STyp = dyn_cast<StructType>(Ty)) {
+ if (!STyp->isLiteral()) {
+ Result += "s_";
+ Result += STyp->getName();
+ } else {
+ Result += "sl_";
+ for (auto Elem : STyp->elements())
+ Result += getMangledTypeStr(Elem);
+ }
+ // Ensure nested structs are distinguishable.
+ Result += "s";
+ } else if (FunctionType *FT = dyn_cast<FunctionType>(Ty)) {
+ Result += "f_" + getMangledTypeStr(FT->getReturnType());
+ for (size_t i = 0; i < FT->getNumParams(); i++)
+ Result += getMangledTypeStr(FT->getParamType(i));
+ if (FT->isVarArg())
+ Result += "vararg";
+ // Ensure nested function types are distinguishable.
+ Result += "f";
+ } else if (isa<VectorType>(Ty))
+ Result += "v" + utostr(Ty->getVectorNumElements()) +
+ getMangledTypeStr(Ty->getVectorElementType());
+ else if (Ty)
+ Result += EVT::getEVT(Ty).getEVTString();
+ return Result;
+}
+
+StringRef Intrinsic::getName(ID id) {
+ assert(id < num_intrinsics && "Invalid intrinsic ID!");
+ assert(!isOverloaded(id) &&
+ "This version of getName does not support overloading");
+ return IntrinsicNameTable[id];
+}
+
+std::string Intrinsic::getName(ID id, ArrayRef<Type*> Tys) {
+ assert(id < num_intrinsics && "Invalid intrinsic ID!");
+ std::string Result(IntrinsicNameTable[id]);
+ for (Type *Ty : Tys) {
+ Result += "." + getMangledTypeStr(Ty);
+ }
+ return Result;
+}
+
+/// IIT_Info - These are enumerators that describe the entries returned by the
+/// getIntrinsicInfoTableEntries function.
+///
+/// NOTE: This must be kept in synch with the copy in TblGen/IntrinsicEmitter!
+enum IIT_Info {
+ // Common values should be encoded with 0-15.
+ IIT_Done = 0,
+ IIT_I1 = 1,
+ IIT_I8 = 2,
+ IIT_I16 = 3,
+ IIT_I32 = 4,
+ IIT_I64 = 5,
+ IIT_F16 = 6,
+ IIT_F32 = 7,
+ IIT_F64 = 8,
+ IIT_V2 = 9,
+ IIT_V4 = 10,
+ IIT_V8 = 11,
+ IIT_V16 = 12,
+ IIT_V32 = 13,
+ IIT_PTR = 14,
+ IIT_ARG = 15,
+
+ // Values from 16+ are only encodable with the inefficient encoding.
+ IIT_V64 = 16,
+ IIT_MMX = 17,
+ 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_PTR_TO_ELT = 33,
+ IIT_VEC_OF_ANYPTRS_TO_ELT = 34,
+ IIT_I128 = 35,
+ IIT_V512 = 36,
+ IIT_V1024 = 37
+};
+
+static void DecodeIITType(unsigned &NextElt, ArrayRef<unsigned char> Infos,
+ SmallVectorImpl<Intrinsic::IITDescriptor> &OutputTable) {
+ using namespace Intrinsic;
+
+ IIT_Info Info = IIT_Info(Infos[NextElt++]);
+ unsigned StructElts = 2;
+
+ switch (Info) {
+ case IIT_Done:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Void, 0));
+ return;
+ case IIT_VARARG:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::VarArg, 0));
+ return;
+ 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;
+ case IIT_F16:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Half, 0));
+ return;
+ case IIT_F32:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Float, 0));
+ return;
+ case IIT_F64:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Double, 0));
+ return;
+ case IIT_I1:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer, 1));
+ return;
+ case IIT_I8:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer, 8));
+ return;
+ case IIT_I16:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer,16));
+ return;
+ case IIT_I32:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Integer, 32));
+ return;
+ 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);
+ return;
+ case IIT_V2:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 2));
+ DecodeIITType(NextElt, Infos, OutputTable);
+ return;
+ case IIT_V4:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 4));
+ DecodeIITType(NextElt, Infos, OutputTable);
+ return;
+ case IIT_V8:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 8));
+ DecodeIITType(NextElt, Infos, OutputTable);
+ return;
+ case IIT_V16:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 16));
+ DecodeIITType(NextElt, Infos, OutputTable);
+ return;
+ case IIT_V32:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Vector, 32));
+ DecodeIITType(NextElt, Infos, OutputTable);
+ return;
+ case IIT_V64:
+ 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);
+ return;
+ case IIT_ANYPTR: { // [ANYPTR addrspace, subtype]
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Pointer,
+ Infos[NextElt++]));
+ DecodeIITType(NextElt, Infos, OutputTable);
+ return;
+ }
+ case IIT_ARG: {
+ unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Argument, ArgInfo));
+ return;
+ }
+ case IIT_EXTEND_ARG: {
+ unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::ExtendArgument,
+ ArgInfo));
+ return;
+ }
+ case IIT_TRUNC_ARG: {
+ unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::TruncArgument,
+ ArgInfo));
+ return;
+ }
+ case IIT_HALF_VEC_ARG: {
+ unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::HalfVecArgument,
+ ArgInfo));
+ return;
+ }
+ case IIT_SAME_VEC_WIDTH_ARG: {
+ unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::SameVecWidthArgument,
+ 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_PTR_TO_ELT: {
+ unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::PtrToElt, ArgInfo));
+ return;
+ }
+ case IIT_VEC_OF_ANYPTRS_TO_ELT: {
+ unsigned short ArgNo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
+ unsigned short RefNo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]);
+ OutputTable.push_back(
+ IITDescriptor::get(IITDescriptor::VecOfAnyPtrsToElt, ArgNo, RefNo));
+ return;
+ }
+ case IIT_EMPTYSTRUCT:
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Struct, 0));
+ return;
+ case IIT_STRUCT5: ++StructElts; LLVM_FALLTHROUGH;
+ case IIT_STRUCT4: ++StructElts; LLVM_FALLTHROUGH;
+ case IIT_STRUCT3: ++StructElts; LLVM_FALLTHROUGH;
+ case IIT_STRUCT2: {
+ OutputTable.push_back(IITDescriptor::get(IITDescriptor::Struct,StructElts));
+
+ for (unsigned i = 0; i != StructElts; ++i)
+ DecodeIITType(NextElt, Infos, OutputTable);
+ return;
+ }
+ }
+ llvm_unreachable("unhandled");
+}
+
+#define GET_INTRINSIC_GENERATOR_GLOBAL
+#include "llvm/IR/Intrinsics.gen"
+#undef GET_INTRINSIC_GENERATOR_GLOBAL
+
+void Intrinsic::getIntrinsicInfoTableEntries(ID id,
+ SmallVectorImpl<IITDescriptor> &T){
+ // Check to see if the intrinsic's type was expressible by the table.
+ unsigned TableVal = IIT_Table[id-1];
+
+ // Decode the TableVal into an array of IITValues.
+ SmallVector<unsigned char, 8> IITValues;
+ ArrayRef<unsigned char> IITEntries;
+ unsigned NextElt = 0;
+ if ((TableVal >> 31) != 0) {
+ // This is an offset into the IIT_LongEncodingTable.
+ IITEntries = IIT_LongEncodingTable;
+
+ // Strip sentinel bit.
+ NextElt = (TableVal << 1) >> 1;
+ } else {
+ // Decode the TableVal into an array of IITValues. If the entry was encoded
+ // into a single word in the table itself, decode it now.
+ do {
+ IITValues.push_back(TableVal & 0xF);
+ TableVal >>= 4;
+ } while (TableVal);
+
+ IITEntries = IITValues;
+ NextElt = 0;
+ }
+
+ // Okay, decode the table into the output vector of IITDescriptors.
+ DecodeIITType(NextElt, IITEntries, T);
+ while (NextElt != IITEntries.size() && IITEntries[NextElt] != 0)
+ DecodeIITType(NextElt, IITEntries, T);
+}
+
+static Type *DecodeFixedType(ArrayRef<Intrinsic::IITDescriptor> &Infos,
+ ArrayRef<Type*> Tys, LLVMContext &Context) {
+ using namespace Intrinsic;
+
+ IITDescriptor D = Infos.front();
+ Infos = Infos.slice(1);
+
+ switch (D.Kind) {
+ 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);
+ case IITDescriptor::Double: return Type::getDoubleTy(Context);
+
+ case IITDescriptor::Integer:
+ return IntegerType::get(Context, D.Integer_Width);
+ case IITDescriptor::Vector:
+ return VectorType::get(DecodeFixedType(Infos, Tys, Context),D.Vector_Width);
+ case IITDescriptor::Pointer:
+ return PointerType::get(DecodeFixedType(Infos, Tys, Context),
+ D.Pointer_AddressSpace);
+ case IITDescriptor::Struct: {
+ Type *Elts[5];
+ assert(D.Struct_NumElements <= 5 && "Can't handle this yet");
+ for (unsigned i = 0, e = D.Struct_NumElements; i != e; ++i)
+ Elts[i] = DecodeFixedType(Infos, Tys, Context);
+ return StructType::get(Context, makeArrayRef(Elts,D.Struct_NumElements));
+ }
+ case IITDescriptor::Argument:
+ return Tys[D.getArgumentNumber()];
+ case IITDescriptor::ExtendArgument: {
+ Type *Ty = Tys[D.getArgumentNumber()];
+ if (VectorType *VTy = dyn_cast<VectorType>(Ty))
+ return VectorType::getExtendedElementVectorType(VTy);
+
+ return IntegerType::get(Context, 2 * cast<IntegerType>(Ty)->getBitWidth());
+ }
+ case IITDescriptor::TruncArgument: {
+ Type *Ty = Tys[D.getArgumentNumber()];
+ if (VectorType *VTy = dyn_cast<VectorType>(Ty))
+ return VectorType::getTruncatedElementVectorType(VTy);
+
+ IntegerType *ITy = cast<IntegerType>(Ty);
+ assert(ITy->getBitWidth() % 2 == 0);
+ return IntegerType::get(Context, ITy->getBitWidth() / 2);
+ }
+ case IITDescriptor::HalfVecArgument:
+ return VectorType::getHalfElementsVectorType(cast<VectorType>(
+ Tys[D.getArgumentNumber()]));
+ case IITDescriptor::SameVecWidthArgument: {
+ Type *EltTy = DecodeFixedType(Infos, Tys, Context);
+ Type *Ty = Tys[D.getArgumentNumber()];
+ if (VectorType *VTy = dyn_cast<VectorType>(Ty)) {
+ return VectorType::get(EltTy, VTy->getNumElements());
+ }
+ llvm_unreachable("unhandled");
+ }
+ case IITDescriptor::PtrToArgument: {
+ Type *Ty = Tys[D.getArgumentNumber()];
+ return PointerType::getUnqual(Ty);
+ }
+ case IITDescriptor::PtrToElt: {
+ Type *Ty = Tys[D.getArgumentNumber()];
+ VectorType *VTy = dyn_cast<VectorType>(Ty);
+ if (!VTy)
+ llvm_unreachable("Expected an argument of Vector Type");
+ Type *EltTy = VTy->getVectorElementType();
+ return PointerType::getUnqual(EltTy);
+ }
+ case IITDescriptor::VecOfAnyPtrsToElt:
+ // Return the overloaded type (which determines the pointers address space)
+ return Tys[D.getOverloadArgNumber()];
+ }
+ llvm_unreachable("unhandled");
+}
+
+FunctionType *Intrinsic::getType(LLVMContext &Context,
+ ID id, ArrayRef<Type*> Tys) {
+ SmallVector<IITDescriptor, 8> Table;
+ getIntrinsicInfoTableEntries(id, Table);
+
+ ArrayRef<IITDescriptor> TableRef = Table;
+ Type *ResultTy = DecodeFixedType(TableRef, Tys, Context);
+
+ SmallVector<Type*, 8> ArgTys;
+ while (!TableRef.empty())
+ ArgTys.push_back(DecodeFixedType(TableRef, Tys, Context));
+
+ // DecodeFixedType returns Void for IITDescriptor::Void and IITDescriptor::VarArg
+ // If we see void type as the type of the last argument, it is vararg intrinsic
+ if (!ArgTys.empty() && ArgTys.back()->isVoidTy()) {
+ ArgTys.pop_back();
+ return FunctionType::get(ResultTy, ArgTys, true);
+ }
+ return FunctionType::get(ResultTy, ArgTys, false);
+}
+
+bool Intrinsic::isOverloaded(ID id) {
+#define GET_INTRINSIC_OVERLOAD_TABLE
+#include "llvm/IR/Intrinsics.gen"
+#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"
+#undef GET_INTRINSIC_ATTRIBUTES
+
+Function *Intrinsic::getDeclaration(Module *M, ID id, ArrayRef<Type*> Tys) {
+ // There can never be multiple globals with the same name of different types,
+ // because intrinsics must be a specific type.
+ return
+ cast<Function>(M->getOrInsertFunction(getName(id, Tys),
+ getType(M->getContext(), id, Tys)));
+}
+
+// This defines the "Intrinsic::getIntrinsicForGCCBuiltin()" method.
+#define GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
+#include "llvm/IR/Intrinsics.gen"
+#undef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
+
+// This defines the "Intrinsic::getIntrinsicForMSBuiltin()" method.
+#define GET_LLVM_INTRINSIC_FOR_MS_BUILTIN
+#include "llvm/IR/Intrinsics.gen"
+#undef GET_LLVM_INTRINSIC_FOR_MS_BUILTIN
+
+bool Intrinsic::matchIntrinsicType(Type *Ty, ArrayRef<Intrinsic::IITDescriptor> &Infos,
+ SmallVectorImpl<Type*> &ArgTys) {
+ using namespace Intrinsic;
+
+ // If we ran out of descriptors, there are too many arguments.
+ if (Infos.empty()) return true;
+ IITDescriptor D = Infos.front();
+ Infos = Infos.slice(1);
+
+ switch (D.Kind) {
+ case IITDescriptor::Void: return !Ty->isVoidTy();
+ case IITDescriptor::VarArg: return true;
+ case IITDescriptor::MMX: return !Ty->isX86_MMXTy();
+ case IITDescriptor::Token: return !Ty->isTokenTy();
+ case IITDescriptor::Metadata: return !Ty->isMetadataTy();
+ case IITDescriptor::Half: return !Ty->isHalfTy();
+ case IITDescriptor::Float: return !Ty->isFloatTy();
+ case IITDescriptor::Double: return !Ty->isDoubleTy();
+ case IITDescriptor::Integer: return !Ty->isIntegerTy(D.Integer_Width);
+ case IITDescriptor::Vector: {
+ VectorType *VT = dyn_cast<VectorType>(Ty);
+ return !VT || VT->getNumElements() != D.Vector_Width ||
+ matchIntrinsicType(VT->getElementType(), Infos, ArgTys);
+ }
+ case IITDescriptor::Pointer: {
+ PointerType *PT = dyn_cast<PointerType>(Ty);
+ return !PT || PT->getAddressSpace() != D.Pointer_AddressSpace ||
+ matchIntrinsicType(PT->getElementType(), Infos, ArgTys);
+ }
+
+ case IITDescriptor::Struct: {
+ StructType *ST = dyn_cast<StructType>(Ty);
+ if (!ST || ST->getNumElements() != D.Struct_NumElements)
+ return true;
+
+ for (unsigned i = 0, e = D.Struct_NumElements; i != e; ++i)
+ if (matchIntrinsicType(ST->getElementType(i), Infos, ArgTys))
+ return true;
+ return false;
+ }
+
+ case IITDescriptor::Argument:
+ // Two cases here - If this is the second occurrence of an argument, verify
+ // that the later instance matches the previous instance.
+ if (D.getArgumentNumber() < ArgTys.size())
+ return Ty != ArgTys[D.getArgumentNumber()];
+
+ // Otherwise, if this is the first instance of an argument, record it and
+ // verify the "Any" kind.
+ assert(D.getArgumentNumber() == ArgTys.size() && "Table consistency error");
+ ArgTys.push_back(Ty);
+
+ switch (D.getArgumentKind()) {
+ case IITDescriptor::AK_Any: return false; // Success
+ case IITDescriptor::AK_AnyInteger: return !Ty->isIntOrIntVectorTy();
+ case IITDescriptor::AK_AnyFloat: return !Ty->isFPOrFPVectorTy();
+ case IITDescriptor::AK_AnyVector: return !isa<VectorType>(Ty);
+ case IITDescriptor::AK_AnyPointer: return !isa<PointerType>(Ty);
+ }
+ llvm_unreachable("all argument kinds not covered");
+
+ case IITDescriptor::ExtendArgument: {
+ // This may only be used when referring to a previous vector argument.
+ if (D.getArgumentNumber() >= ArgTys.size())
+ return true;
+
+ Type *NewTy = ArgTys[D.getArgumentNumber()];
+ if (VectorType *VTy = dyn_cast<VectorType>(NewTy))
+ NewTy = VectorType::getExtendedElementVectorType(VTy);
+ else if (IntegerType *ITy = dyn_cast<IntegerType>(NewTy))
+ NewTy = IntegerType::get(ITy->getContext(), 2 * ITy->getBitWidth());
+ else
+ return true;
+
+ return Ty != NewTy;
+ }
+ case IITDescriptor::TruncArgument: {
+ // This may only be used when referring to a previous vector argument.
+ if (D.getArgumentNumber() >= ArgTys.size())
+ return true;
+
+ Type *NewTy = ArgTys[D.getArgumentNumber()];
+ if (VectorType *VTy = dyn_cast<VectorType>(NewTy))
+ NewTy = VectorType::getTruncatedElementVectorType(VTy);
+ else if (IntegerType *ITy = dyn_cast<IntegerType>(NewTy))
+ NewTy = IntegerType::get(ITy->getContext(), ITy->getBitWidth() / 2);
+ else
+ return true;
+
+ return Ty != NewTy;
+ }
+ case IITDescriptor::HalfVecArgument:
+ // This may only be used when referring to a previous vector argument.
+ return D.getArgumentNumber() >= ArgTys.size() ||
+ !isa<VectorType>(ArgTys[D.getArgumentNumber()]) ||
+ VectorType::getHalfElementsVectorType(
+ cast<VectorType>(ArgTys[D.getArgumentNumber()])) != Ty;
+ case IITDescriptor::SameVecWidthArgument: {
+ if (D.getArgumentNumber() >= ArgTys.size())
+ return true;
+ VectorType * ReferenceType =
+ dyn_cast<VectorType>(ArgTys[D.getArgumentNumber()]);
+ VectorType *ThisArgType = dyn_cast<VectorType>(Ty);
+ if (!ThisArgType || !ReferenceType ||
+ (ReferenceType->getVectorNumElements() !=
+ ThisArgType->getVectorNumElements()))
+ return true;
+ return matchIntrinsicType(ThisArgType->getVectorElementType(),
+ Infos, ArgTys);
+ }
+ case IITDescriptor::PtrToArgument: {
+ if (D.getArgumentNumber() >= ArgTys.size())
+ return true;
+ Type * ReferenceType = ArgTys[D.getArgumentNumber()];
+ PointerType *ThisArgType = dyn_cast<PointerType>(Ty);
+ return (!ThisArgType || ThisArgType->getElementType() != ReferenceType);
+ }
+ case IITDescriptor::PtrToElt: {
+ if (D.getArgumentNumber() >= ArgTys.size())
+ return true;
+ VectorType * ReferenceType =
+ dyn_cast<VectorType> (ArgTys[D.getArgumentNumber()]);
+ PointerType *ThisArgType = dyn_cast<PointerType>(Ty);
+
+ return (!ThisArgType || !ReferenceType ||
+ ThisArgType->getElementType() != ReferenceType->getElementType());
+ }
+ case IITDescriptor::VecOfAnyPtrsToElt: {
+ unsigned RefArgNumber = D.getRefArgNumber();
+
+ // This may only be used when referring to a previous argument.
+ if (RefArgNumber >= ArgTys.size())
+ return true;
+
+ // Record the overloaded type
+ assert(D.getOverloadArgNumber() == ArgTys.size() &&
+ "Table consistency error");
+ ArgTys.push_back(Ty);
+
+ // Verify the overloaded type "matches" the Ref type.
+ // i.e. Ty is a vector with the same width as Ref.
+ // Composed of pointers to the same element type as Ref.
+ VectorType *ReferenceType = dyn_cast<VectorType>(ArgTys[RefArgNumber]);
+ VectorType *ThisArgVecTy = dyn_cast<VectorType>(Ty);
+ if (!ThisArgVecTy || !ReferenceType ||
+ (ReferenceType->getVectorNumElements() !=
+ ThisArgVecTy->getVectorNumElements()))
+ return true;
+ PointerType *ThisArgEltTy =
+ dyn_cast<PointerType>(ThisArgVecTy->getVectorElementType());
+ if (!ThisArgEltTy)
+ return true;
+ return ThisArgEltTy->getElementType() !=
+ ReferenceType->getVectorElementType();
+ }
+ }
+ llvm_unreachable("unhandled");
+}
+
+bool
+Intrinsic::matchIntrinsicVarArg(bool isVarArg,
+ ArrayRef<Intrinsic::IITDescriptor> &Infos) {
+ // If there are no descriptors left, then it can't be a vararg.
+ if (Infos.empty())
+ return isVarArg;
+
+ // There should be only one descriptor remaining at this point.
+ if (Infos.size() != 1)
+ return true;
+
+ // Check and verify the descriptor.
+ IITDescriptor D = Infos.front();
+ Infos = Infos.slice(1);
+ if (D.Kind == IITDescriptor::VarArg)
+ return !isVarArg;
+
+ return true;
+}
+
+Optional<Function*> Intrinsic::remangleIntrinsicFunction(Function *F) {
+ Intrinsic::ID ID = F->getIntrinsicID();
+ if (!ID)
+ return None;
+
+ FunctionType *FTy = F->getFunctionType();
+ // Accumulate an array of overloaded types for the given intrinsic
+ SmallVector<Type *, 4> ArgTys;
+ {
+ SmallVector<Intrinsic::IITDescriptor, 8> Table;
+ getIntrinsicInfoTableEntries(ID, Table);
+ ArrayRef<Intrinsic::IITDescriptor> TableRef = Table;
+
+ // If we encounter any problems matching the signature with the descriptor
+ // just give up remangling. It's up to verifier to report the discrepancy.
+ if (Intrinsic::matchIntrinsicType(FTy->getReturnType(), TableRef, ArgTys))
+ return None;
+ for (auto Ty : FTy->params())
+ if (Intrinsic::matchIntrinsicType(Ty, TableRef, ArgTys))
+ return None;
+ if (Intrinsic::matchIntrinsicVarArg(FTy->isVarArg(), TableRef))
+ return None;
+ }
+
+ StringRef Name = F->getName();
+ if (Name == Intrinsic::getName(ID, ArgTys))
+ return None;
+
+ auto NewDecl = Intrinsic::getDeclaration(F->getParent(), ID, ArgTys);
+ NewDecl->setCallingConv(F->getCallingConv());
+ assert(NewDecl->getFunctionType() == FTy && "Shouldn't change the signature");
+ return NewDecl;
+}
+
+/// hasAddressTaken - returns true if there are any uses of this function
+/// other than direct calls or invokes to it.
+bool Function::hasAddressTaken(const User* *PutOffender) const {
+ for (const Use &U : uses()) {
+ const User *FU = U.getUser();
+ if (isa<BlockAddress>(FU))
+ continue;
+ if (!isa<CallInst>(FU) && !isa<InvokeInst>(FU)) {
+ if (PutOffender)
+ *PutOffender = FU;
+ return true;
+ }
+ ImmutableCallSite CS(cast<Instruction>(FU));
+ if (!CS.isCallee(&U)) {
+ if (PutOffender)
+ *PutOffender = FU;
+ return true;
+ }
+ }
+ return false;
+}
+
+bool Function::isDefTriviallyDead() const {
+ // Check the linkage
+ if (!hasLinkOnceLinkage() && !hasLocalLinkage() &&
+ !hasAvailableExternallyLinkage())
+ return false;
+
+ // Check if the function is used by anything other than a blockaddress.
+ for (const User *U : users())
+ if (!isa<BlockAddress>(U))
+ return false;
+
+ return true;
+}
+
+/// callsFunctionThatReturnsTwice - Return true if the function has a call to
+/// setjmp or other function that gcc recognizes as "returning twice".
+bool Function::callsFunctionThatReturnsTwice() const {
+ for (const_inst_iterator
+ I = inst_begin(this), E = inst_end(this); I != E; ++I) {
+ ImmutableCallSite CS(&*I);
+ if (CS && CS.hasFnAttr(Attribute::ReturnsTwice))
+ return true;
+ }
+
+ return false;
+}
+
+Constant *Function::getPersonalityFn() const {
+ assert(hasPersonalityFn() && getNumOperands());
+ return cast<Constant>(Op<0>());
+}
+
+void Function::setPersonalityFn(Constant *Fn) {
+ setHungoffOperand<0>(Fn);
+ setValueSubclassDataBit(3, Fn != nullptr);
+}
+
+Constant *Function::getPrefixData() const {
+ assert(hasPrefixData() && getNumOperands());
+ return cast<Constant>(Op<1>());
+}
+
+void Function::setPrefixData(Constant *PrefixData) {
+ setHungoffOperand<1>(PrefixData);
+ setValueSubclassDataBit(1, PrefixData != nullptr);
+}
+
+Constant *Function::getPrologueData() const {
+ assert(hasPrologueData() && getNumOperands());
+ return cast<Constant>(Op<2>());
+}
+
+void Function::setPrologueData(Constant *PrologueData) {
+ 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 <int Idx>
+void Function::setHungoffOperand(Constant *C) {
+ if (C) {
+ allocHungoffUselist();
+ Op<Idx>().set(C);
+ } else if (getNumOperands()) {
+ Op<Idx>().set(
+ ConstantPointerNull::get(Type::getInt1PtrTy(getContext(), 0)));
+ }
+}
+
+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,
+ const DenseSet<GlobalValue::GUID> *S) {
+ MDBuilder MDB(getContext());
+ setMetadata(LLVMContext::MD_prof, MDB.createFunctionEntryCount(Count, S));
+}
+
+Optional<uint64_t> Function::getEntryCount() const {
+ MDNode *MD = getMetadata(LLVMContext::MD_prof);
+ if (MD && MD->getOperand(0))
+ if (MDString *MDS = dyn_cast<MDString>(MD->getOperand(0)))
+ if (MDS->getString().equals("function_entry_count")) {
+ ConstantInt *CI = mdconst::extract<ConstantInt>(MD->getOperand(1));
+ uint64_t Count = CI->getValue().getZExtValue();
+ if (Count == 0)
+ return None;
+ return Count;
+ }
+ return None;
+}
+
+DenseSet<GlobalValue::GUID> Function::getImportGUIDs() const {
+ DenseSet<GlobalValue::GUID> R;
+ if (MDNode *MD = getMetadata(LLVMContext::MD_prof))
+ if (MDString *MDS = dyn_cast<MDString>(MD->getOperand(0)))
+ if (MDS->getString().equals("function_entry_count"))
+ for (unsigned i = 2; i < MD->getNumOperands(); i++)
+ R.insert(mdconst::extract<ConstantInt>(MD->getOperand(i))
+ ->getValue()
+ .getZExtValue());
+ return R;
+}
+
+void Function::setSectionPrefix(StringRef Prefix) {
+ MDBuilder MDB(getContext());
+ setMetadata(LLVMContext::MD_section_prefix,
+ MDB.createFunctionSectionPrefix(Prefix));
+}
+
+Optional<StringRef> Function::getSectionPrefix() const {
+ if (MDNode *MD = getMetadata(LLVMContext::MD_section_prefix)) {
+ assert(dyn_cast<MDString>(MD->getOperand(0))
+ ->getString()
+ .equals("function_section_prefix") &&
+ "Metadata not match");
+ return dyn_cast<MDString>(MD->getOperand(1))->getString();
+ }
+ return None;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-30 21:52:47 +0000