#include "llvm/Module.h"
#include "llvm/DerivedTypes.h"
#include "llvm/IntrinsicInst.h"
+#include "llvm/LLVMContext.h"
#include "llvm/CodeGen/ValueTypes.h"
+#include "llvm/Support/CallSite.h"
+#include "llvm/Support/InstIterator.h"
#include "llvm/Support/LeakDetector.h"
+#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/StringPool.h"
+#include "llvm/Support/RWMutex.h"
+#include "llvm/Support/Threading.h"
#include "SymbolTableListTraitsImpl.h"
-#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
using namespace llvm;
-BasicBlock *ilist_traits<BasicBlock>::createSentinel() {
- BasicBlock *Ret = BasicBlock::Create();
- // This should not be garbage monitored.
- LeakDetector::removeGarbageObject(Ret);
- return Ret;
-}
-
-iplist<BasicBlock> &ilist_traits<BasicBlock>::getList(Function *F) {
- return F->getBasicBlockList();
-}
-
-Argument *ilist_traits<Argument>::createSentinel() {
- Argument *Ret = new Argument(Type::Int32Ty);
- // This should not be garbage monitored.
- LeakDetector::removeGarbageObject(Ret);
- return Ret;
-}
-
-iplist<Argument> &ilist_traits<Argument>::getList(Function *F) {
- return F->getArgumentList();
-}
-
// Explicit instantiations of SymbolTableListTraits since some of the methods
// are not in the public header file...
-template class SymbolTableListTraits<Argument, Function>;
-template class SymbolTableListTraits<BasicBlock, Function>;
+template class llvm::SymbolTableListTraits<Argument, Function>;
+template class llvm::SymbolTableListTraits<BasicBlock, Function>;
//===----------------------------------------------------------------------===//
// Argument Implementation
//===----------------------------------------------------------------------===//
-Argument::Argument(const Type *Ty, const std::string &Name, Function *Par)
+void Argument::anchor() { }
+
+Argument::Argument(Type *Ty, const Twine &Name, Function *Par)
: Value(Ty, Value::ArgumentVal) {
Parent = 0;
/// hasByValAttr - Return true if this argument has the byval attribute on it
/// in its containing function.
bool Argument::hasByValAttr() const {
- if (!isa<PointerType>(getType())) return false;
- return getParent()->paramHasAttr(getArgNo()+1, ParamAttr::ByVal);
+ if (!getType()->isPointerTy()) return false;
+ return getParent()->paramHasAttr(getArgNo()+1, Attribute::ByVal);
+}
+
+unsigned Argument::getParamAlignment() const {
+ assert(getType()->isPointerTy() && "Only pointers have alignments");
+ return getParent()->getParamAlignment(getArgNo()+1);
+
+}
+
+/// hasNestAttr - Return true if this argument has the nest attribute on
+/// it in its containing function.
+bool Argument::hasNestAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ return getParent()->paramHasAttr(getArgNo()+1, Attribute::Nest);
}
/// hasNoAliasAttr - Return true if this argument has the noalias attribute on
/// it in its containing function.
bool Argument::hasNoAliasAttr() const {
- if (!isa<PointerType>(getType())) return false;
- return getParent()->paramHasAttr(getArgNo()+1, ParamAttr::NoAlias);
+ if (!getType()->isPointerTy()) return false;
+ return getParent()->paramHasAttr(getArgNo()+1, Attribute::NoAlias);
+}
+
+/// hasNoCaptureAttr - Return true if this argument has the nocapture attribute
+/// on it in its containing function.
+bool Argument::hasNoCaptureAttr() const {
+ if (!getType()->isPointerTy()) return false;
+ return getParent()->paramHasAttr(getArgNo()+1, Attribute::NoCapture);
}
/// hasSRetAttr - Return true if this argument has the sret attribute on
/// it in its containing function.
bool Argument::hasStructRetAttr() const {
- if (!isa<PointerType>(getType())) return false;
+ if (!getType()->isPointerTy()) return false;
if (this != getParent()->arg_begin())
return false; // StructRet param must be first param
- return getParent()->paramHasAttr(1, ParamAttr::StructRet);
+ return getParent()->paramHasAttr(1, Attribute::StructRet);
}
-/// addAttr - Add a ParamAttr to an argument
-void Argument::addAttr(ParameterAttributes attr) {
- getParent()->addParamAttr(getArgNo() + 1, attr);
+/// addAttr - Add a Attribute to an argument
+void Argument::addAttr(Attributes attr) {
+ getParent()->addAttribute(getArgNo() + 1, attr);
}
-/// removeAttr - Remove a ParamAttr from an argument
-void Argument::removeAttr(ParameterAttributes attr) {
- getParent()->removeParamAttr(getArgNo() + 1, attr);
+/// removeAttr - Remove a Attribute from an argument
+void Argument::removeAttr(Attributes attr) {
+ getParent()->removeAttribute(getArgNo() + 1, attr);
}
// Helper Methods in Function
//===----------------------------------------------------------------------===//
-const FunctionType *Function::getFunctionType() const {
+LLVMContext &Function::getContext() const {
+ return getType()->getContext();
+}
+
+FunctionType *Function::getFunctionType() const {
return cast<FunctionType>(getType()->getElementType());
}
return getFunctionType()->isVarArg();
}
-const Type *Function::getReturnType() const {
+Type *Function::getReturnType() const {
return getFunctionType()->getReturnType();
}
// Function Implementation
//===----------------------------------------------------------------------===//
-Function::Function(const FunctionType *Ty, LinkageTypes Linkage,
- const std::string &name, Module *ParentModule)
+Function::Function(FunctionType *Ty, LinkageTypes Linkage,
+ const Twine &name, Module *ParentModule)
: GlobalValue(PointerType::getUnqual(Ty),
Value::FunctionVal, 0, 0, Linkage, name) {
+ assert(FunctionType::isValidReturnType(getReturnType()) &&
+ "invalid return type");
SymTab = new ValueSymbolTable();
- assert((getReturnType()->isFirstClassType() ||getReturnType() == Type::VoidTy
- || isa<StructType>(getReturnType()))
- && "LLVM functions cannot return aggregate values!");
-
// If the function has arguments, mark them as lazily built.
if (Ty->getNumParams())
- SubclassData = 1; // Set the "has lazy arguments" bit.
+ setValueSubclassData(1); // Set the "has lazy arguments" bit.
// Make sure that we get added to a function
LeakDetector::addGarbageObject(this);
ParentModule->getFunctionList().push_back(this);
// Ensure intrinsics have the right parameter attributes.
- if (unsigned IID = getIntrinsicID(true))
- setParamAttrs(Intrinsic::getParamAttrs(Intrinsic::ID(IID)));
+ if (unsigned IID = getIntrinsicID())
+ setAttributes(Intrinsic::getAttributes(Intrinsic::ID(IID)));
+
}
Function::~Function() {
ArgumentList.clear();
delete SymTab;
- // Remove the function from the on-the-side collector table.
- clearCollector();
+ // Remove the function from the on-the-side GC table.
+ clearGC();
}
void Function::BuildLazyArguments() const {
// Create the arguments vector, all arguments start out unnamed.
- const FunctionType *FT = getFunctionType();
+ FunctionType *FT = getFunctionType();
for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
- assert(FT->getParamType(i) != Type::VoidTy &&
+ assert(!FT->getParamType(i)->isVoidTy() &&
"Cannot have void typed arguments!");
ArgumentList.push_back(new Argument(FT->getParamType(i)));
}
// Clear the lazy arguments bit.
- const_cast<Function*>(this)->SubclassData &= ~1;
+ unsigned SDC = getSubclassDataFromValue();
+ const_cast<Function*>(this)->setValueSubclassData(SDC &= ~1);
}
size_t Function::arg_size() const {
void Function::dropAllReferences() {
for (iterator I = begin(), E = end(); I != E; ++I)
I->dropAllReferences();
- BasicBlocks.clear(); // Delete all basic blocks...
+
+ // 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();
}
-void Function::addParamAttr(unsigned i, ParameterAttributes attr) {
- PAListPtr PAL = getParamAttrs();
+void Function::addAttribute(unsigned i, Attributes attr) {
+ AttrListPtr PAL = getAttributes();
PAL = PAL.addAttr(i, attr);
- setParamAttrs(PAL);
+ setAttributes(PAL);
}
-void Function::removeParamAttr(unsigned i, ParameterAttributes attr) {
- PAListPtr PAL = getParamAttrs();
+void Function::removeAttribute(unsigned i, Attributes attr) {
+ AttrListPtr PAL = getAttributes();
PAL = PAL.removeAttr(i, attr);
- setParamAttrs(PAL);
-}
-
-// Maintain the collector 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 use GC.
-static DenseMap<const Function*,PooledStringPtr> *CollectorNames;
-static StringPool *CollectorNamePool;
-
-bool Function::hasCollector() const {
- return CollectorNames && CollectorNames->count(this);
-}
-
-const char *Function::getCollector() const {
- assert(hasCollector() && "Function has no collector");
- return *(*CollectorNames)[this];
-}
-
-void Function::setCollector(const char *Str) {
- if (!CollectorNamePool)
- CollectorNamePool = new StringPool();
- if (!CollectorNames)
- CollectorNames = new DenseMap<const Function*,PooledStringPtr>();
- (*CollectorNames)[this] = CollectorNamePool->intern(Str);
-}
-
-void Function::clearCollector() {
- if (CollectorNames) {
- CollectorNames->erase(this);
- if (CollectorNames->empty()) {
- delete CollectorNames;
- CollectorNames = 0;
- if (CollectorNamePool->empty()) {
- delete CollectorNamePool;
- CollectorNamePool = 0;
+ 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
+// use GC.
+static DenseMap<const Function*,PooledStringPtr> *GCNames;
+static StringPool *GCNamePool;
+static ManagedStatic<sys::SmartRWMutex<true> > GCLock;
+
+bool Function::hasGC() const {
+ sys::SmartScopedReader<true> Reader(*GCLock);
+ return GCNames && GCNames->count(this);
+}
+
+const char *Function::getGC() const {
+ assert(hasGC() && "Function has no collector");
+ sys::SmartScopedReader<true> Reader(*GCLock);
+ return *(*GCNames)[this];
+}
+
+void Function::setGC(const char *Str) {
+ sys::SmartScopedWriter<true> Writer(*GCLock);
+ if (!GCNamePool)
+ GCNamePool = new StringPool();
+ if (!GCNames)
+ GCNames = new DenseMap<const Function*,PooledStringPtr>();
+ (*GCNames)[this] = GCNamePool->intern(Str);
+}
+
+void Function::clearGC() {
+ sys::SmartScopedWriter<true> Writer(*GCLock);
+ if (GCNames) {
+ GCNames->erase(this);
+ if (GCNames->empty()) {
+ delete GCNames;
+ GCNames = 0;
+ if (GCNamePool->empty()) {
+ delete GCNamePool;
+ GCNamePool = 0;
}
}
}
GlobalValue::copyAttributesFrom(Src);
const Function *SrcF = cast<Function>(Src);
setCallingConv(SrcF->getCallingConv());
- setParamAttrs(SrcF->getParamAttrs());
- if (SrcF->hasCollector())
- setCollector(SrcF->getCollector());
+ setAttributes(SrcF->getAttributes());
+ if (SrcF->hasGC())
+ setGC(SrcF->getGC());
+ else
+ clearGC();
}
/// getIntrinsicID - This method returns the ID number of the specified
/// particular intrinsic functions which correspond to this value are defined in
/// llvm/Intrinsics.h.
///
-unsigned Function::getIntrinsicID(bool noAssert) const {
+unsigned Function::getIntrinsicID() const {
const ValueName *ValName = this->getValueName();
if (!ValName)
return 0;
|| Name[2] != 'v' || Name[3] != 'm')
return 0; // All intrinsics start with 'llvm.'
- assert((Len != 5 || noAssert) && "'llvm.' is an invalid intrinsic name!");
-
#define GET_FUNCTION_RECOGNIZER
#include "llvm/Intrinsics.gen"
#undef GET_FUNCTION_RECOGNIZER
- assert(noAssert && "Invalid LLVM intrinsic name");
return 0;
}
-std::string Intrinsic::getName(ID id, const Type **Tys, unsigned numTys) {
+std::string Intrinsic::getName(ID id, ArrayRef<Type*> Tys) {
assert(id < num_intrinsics && "Invalid intrinsic ID!");
- const char * const Table[] = {
+ static const char * const Table[] = {
"not_intrinsic",
#define GET_INTRINSIC_NAME_TABLE
#include "llvm/Intrinsics.gen"
#undef GET_INTRINSIC_NAME_TABLE
};
- if (numTys == 0)
+ if (Tys.empty())
return Table[id];
std::string Result(Table[id]);
- for (unsigned i = 0; i < numTys; ++i) {
- if (const PointerType* PTyp = dyn_cast<PointerType>(Tys[i])) {
+ for (unsigned i = 0; i < Tys.size(); ++i) {
+ if (PointerType* PTyp = dyn_cast<PointerType>(Tys[i])) {
Result += ".p" + llvm::utostr(PTyp->getAddressSpace()) +
- MVT::getMVT(PTyp->getElementType()).getMVTString();
+ EVT::getEVT(PTyp->getElementType()).getEVTString();
}
else if (Tys[i])
- Result += "." + MVT::getMVT(Tys[i]).getMVTString();
+ Result += "." + EVT::getEVT(Tys[i]).getEVTString();
}
return Result;
}
-const FunctionType *Intrinsic::getType(ID id, const Type **Tys,
- unsigned numTys) {
- const Type *ResultTy = NULL;
- std::vector<const Type*> ArgTys;
- bool IsVarArg = false;
-
-#define GET_INTRINSIC_GENERATOR
+#define GET_INTRINSTIC_GENERATOR_GLOBAL
#include "llvm/Intrinsics.gen"
-#undef GET_INTRINSIC_GENERATOR
+#undef GET_INTRINSTIC_GENERATOR_GLOBAL
- return FunctionType::get(ResultTy, ArgTys, IsVarArg);
+static Type *DecodeFixedType(unsigned &NextElt, ArrayRef<unsigned char> Infos,
+ ArrayRef<Type*> Tys, LLVMContext &Context) {
+ IIT_Info Info = IIT_Info(Infos[NextElt++]);
+ unsigned StructElts = 2;
+
+ switch (Info) {
+ case IIT_Done: return Type::getVoidTy(Context);
+ case IIT_I1: return Type::getInt1Ty(Context);
+ case IIT_I8: return Type::getInt8Ty(Context);
+ case IIT_I16: return Type::getInt16Ty(Context);
+ case IIT_I32: return Type::getInt32Ty(Context);
+ case IIT_I64: return Type::getInt64Ty(Context);
+ case IIT_F32: return Type::getFloatTy(Context);
+ case IIT_F64: return Type::getDoubleTy(Context);
+ case IIT_MMX: return Type::getX86_MMXTy(Context);
+ case IIT_METADATA: return Type::getMetadataTy(Context);
+ case IIT_EMPTYSTRUCT: return StructType::get(Context);
+ case IIT_V2:
+ return VectorType::get(DecodeFixedType(NextElt, Infos, Tys, Context), 2);
+ case IIT_V4:
+ return VectorType::get(DecodeFixedType(NextElt, Infos, Tys, Context), 4);
+ case IIT_V8:
+ return VectorType::get(DecodeFixedType(NextElt, Infos, Tys, Context), 8);
+ case IIT_V16:
+ return VectorType::get(DecodeFixedType(NextElt, Infos, Tys, Context), 16);
+ case IIT_V32:
+ return VectorType::get(DecodeFixedType(NextElt, Infos, Tys, Context), 32);
+ case IIT_PTR:
+ return PointerType::getUnqual(DecodeFixedType(NextElt, Infos, Tys,Context));
+ case IIT_ANYPTR: { // [ANYPTR addrspace, subtype]
+ unsigned AddrSpace = Infos[NextElt++];
+ Type *PtrTy = DecodeFixedType(NextElt, Infos, Tys,Context);
+ return PointerType::get(PtrTy, AddrSpace);
+ }
+ case IIT_ARG:
+ case IIT_EXTEND_VEC_ARG:
+ case IIT_TRUNC_VEC_ARG: {
+ unsigned ArgNo = NextElt == Infos.size() ? 0 : Infos[NextElt++];
+ assert(ArgNo < Tys.size() && "Not enough types specified!");
+ Type *T = Tys[ArgNo];
+
+ if (Info == IIT_EXTEND_VEC_ARG)
+ T = VectorType::getExtendedElementVectorType(cast<VectorType>(T));
+ if (Info == IIT_TRUNC_VEC_ARG)
+ T = VectorType::getTruncatedElementVectorType(cast<VectorType>(T));
+ return T;
+ }
+ case IIT_STRUCT5: ++StructElts; // FALL THROUGH.
+ case IIT_STRUCT4: ++StructElts; // FALL THROUGH.
+ case IIT_STRUCT3: ++StructElts; // FALL THROUGH.
+ case IIT_STRUCT2: {
+ Type *Elts[5];
+ for (unsigned i = 0; i != StructElts; ++i)
+ Elts[i] = DecodeFixedType(NextElt, Infos, Tys, Context);
+ return StructType::get(Context, ArrayRef<Type*>(Elts, StructElts));
+ }
+ }
+ llvm_unreachable("unhandled");
}
+
-PAListPtr Intrinsic::getParamAttrs(ID id) {
- ParameterAttributes Attr = ParamAttr::None;
+FunctionType *Intrinsic::getType(LLVMContext &Context,
+ ID id, ArrayRef<Type*> Tys) {
+ // 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 {
+ do {
+ IITValues.push_back(TableVal & 0xF);
+ TableVal >>= 4;
+ } while (TableVal);
+
+ IITEntries = IITValues;
+ NextElt = 0;
+ }
+
+ Type *ResultTy = DecodeFixedType(NextElt, IITEntries, Tys, Context);
+
+ SmallVector<Type*, 8> ArgTys;
+ while (NextElt != IITEntries.size() && IITEntries[NextElt] != 0)
+ ArgTys.push_back(DecodeFixedType(NextElt, IITEntries, Tys, Context));
+
+ return FunctionType::get(ResultTy, ArgTys, false);
+}
+
+bool Intrinsic::isOverloaded(ID id) {
+#define GET_INTRINSIC_OVERLOAD_TABLE
+#include "llvm/Intrinsics.gen"
+#undef GET_INTRINSIC_OVERLOAD_TABLE
+}
+/// This defines the "Intrinsic::getAttributes(ID id)" method.
#define GET_INTRINSIC_ATTRIBUTES
#include "llvm/Intrinsics.gen"
#undef GET_INTRINSIC_ATTRIBUTES
- // Intrinsics cannot throw exceptions.
- Attr |= ParamAttr::NoUnwind;
-
- ParamAttrsWithIndex PAWI = ParamAttrsWithIndex::get(0, Attr);
- return PAListPtr::get(&PAWI, 1);
-}
-
-Function *Intrinsic::getDeclaration(Module *M, ID id, const Type **Tys,
- unsigned numTys) {
+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, numTys),
- getType(id, Tys, numTys)));
+ 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/Intrinsics.gen"
+#undef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
+
+/// 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 (Value::const_use_iterator I = use_begin(), E = use_end(); I != E; ++I) {
+ const User *U = *I;
+ if (isa<BlockAddress>(U))
+ continue;
+ if (!isa<CallInst>(U) && !isa<InvokeInst>(U))
+ return PutOffender ? (*PutOffender = U, true) : true;
+ ImmutableCallSite CS(cast<Instruction>(U));
+ if (!CS.isCallee(I))
+ return PutOffender ? (*PutOffender = U, true) : 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 (Value::const_use_iterator I = use_begin(), E = use_end(); I != E; ++I)
+ if (!isa<BlockAddress>(*I))
+ 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) {
+ const CallInst* callInst = dyn_cast<CallInst>(&*I);
+ if (!callInst)
+ continue;
+ if (callInst->canReturnTwice())
+ return true;
+ }
+
+ return false;
}
-// vim: sw=2 ai