diff options
author | Alexander Kornienko <alexfh@google.com> | 2013-03-14 09:43:28 +0000 |
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committer | Alexander Kornienko <alexfh@google.com> | 2013-03-14 09:43:28 +0000 |
commit | 868d4470cdfa9472353ea2a49a6c456ddae9c95b (patch) | |
tree | 5a5e56606d41060263048b5a5586b3d2380898ba /lib/VMCore/Function.cpp | |
parent | 41d2daa9344a4c4e8bb88dba51cd087c0648b695 (diff) | |
parent | f635ef401786c84df32090251a8cf45981ecca33 (diff) |
Updating branches/google/testing to r176857
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/google/testing@177020 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/VMCore/Function.cpp')
-rw-r--r-- | lib/VMCore/Function.cpp | 669 |
1 files changed, 0 insertions, 669 deletions
diff --git a/lib/VMCore/Function.cpp b/lib/VMCore/Function.cpp deleted file mode 100644 index 013299e76f..0000000000 --- a/lib/VMCore/Function.cpp +++ /dev/null @@ -1,669 +0,0 @@ -//===-- 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 VMCore library. -// -//===----------------------------------------------------------------------===// - -#include "llvm/Function.h" -#include "SymbolTableListTraitsImpl.h" -#include "llvm/ADT/DenseMap.h" -#include "llvm/ADT/STLExtras.h" -#include "llvm/ADT/StringExtras.h" -#include "llvm/CodeGen/ValueTypes.h" -#include "llvm/DerivedTypes.h" -#include "llvm/IntrinsicInst.h" -#include "llvm/LLVMContext.h" -#include "llvm/Module.h" -#include "llvm/Support/CallSite.h" -#include "llvm/Support/InstIterator.h" -#include "llvm/Support/LeakDetector.h" -#include "llvm/Support/ManagedStatic.h" -#include "llvm/Support/RWMutex.h" -#include "llvm/Support/StringPool.h" -#include "llvm/Support/Threading.h" -using namespace llvm; - -// Explicit instantiations of SymbolTableListTraits since some of the methods -// are not in the public header file... -template class llvm::SymbolTableListTraits<Argument, Function>; -template class llvm::SymbolTableListTraits<BasicBlock, Function>; - -//===----------------------------------------------------------------------===// -// Argument Implementation -//===----------------------------------------------------------------------===// - -void Argument::anchor() { } - -Argument::Argument(Type *Ty, const Twine &Name, Function *Par) - : Value(Ty, Value::ArgumentVal) { - Parent = 0; - - // 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 -/// function. For example in "void foo(int a, float b)" a is 0 and b is 1. -unsigned Argument::getArgNo() const { - const Function *F = getParent(); - assert(F && "Argument is not in a function"); - - Function::const_arg_iterator AI = F->arg_begin(); - unsigned ArgIdx = 0; - for (; &*AI != this; ++AI) - ++ArgIdx; - - return ArgIdx; -} - -/// hasByValAttr - Return true if this argument has the byval attribute on it -/// in its containing function. -bool Argument::hasByValAttr() const { - if (!getType()->isPointerTy()) return false; - return getParent()->getParamAttributes(getArgNo()+1). - hasAttribute(Attributes::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()->getParamAttributes(getArgNo()+1). - hasAttribute(Attributes::Nest); -} - -/// hasNoAliasAttr - Return true if this argument has the noalias attribute on -/// it in its containing function. -bool Argument::hasNoAliasAttr() const { - if (!getType()->isPointerTy()) return false; - return getParent()->getParamAttributes(getArgNo()+1). - hasAttribute(Attributes::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()->getParamAttributes(getArgNo()+1). - hasAttribute(Attributes::NoCapture); -} - -/// hasSRetAttr - Return true if this argument has the sret attribute on -/// 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()->getParamAttributes(1). - hasAttribute(Attributes::StructRet); -} - -/// addAttr - Add a Attribute to an argument -void Argument::addAttr(Attributes attr) { - getParent()->addAttribute(getArgNo() + 1, attr); -} - -/// removeAttr - Remove a Attribute from an argument -void Argument::removeAttr(Attributes attr) { - getParent()->removeAttribute(getArgNo() + 1, attr); -} - - -//===----------------------------------------------------------------------===// -// Helper Methods in Function -//===----------------------------------------------------------------------===// - -LLVMContext &Function::getContext() const { - return getType()->getContext(); -} - -FunctionType *Function::getFunctionType() const { - return cast<FunctionType>(getType()->getElementType()); -} - -bool Function::isVarArg() const { - return getFunctionType()->isVarArg(); -} - -Type *Function::getReturnType() const { - return getFunctionType()->getReturnType(); -} - -void Function::removeFromParent() { - getParent()->getFunctionList().remove(this); -} - -void Function::eraseFromParent() { - getParent()->getFunctionList().erase(this); -} - -//===----------------------------------------------------------------------===// -// Function Implementation -//===----------------------------------------------------------------------===// - -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(); - - // 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))); - -} - -Function::~Function() { - dropAllReferences(); // After this it is safe to delete instructions. - - // Delete all of the method arguments and unlink from symbol table... - ArgumentList.clear(); - delete SymTab; - - // Remove the function from the on-the-side GC table. - clearGC(); -} - -void Function::BuildLazyArguments() const { - // Create the arguments vector, all arguments start out unnamed. - FunctionType *FT = getFunctionType(); - for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) { - assert(!FT->getParamType(i)->isVoidTy() && - "Cannot have void typed arguments!"); - ArgumentList.push_back(new Argument(FT->getParamType(i))); - } - - // Clear the lazy arguments bit. - unsigned SDC = getSubclassDataFromValue(); - const_cast<Function*>(this)->setValueSubclassData(SDC &= ~1); -} - -size_t Function::arg_size() const { - return getFunctionType()->getNumParams(); -} -bool Function::arg_empty() const { - return getFunctionType()->getNumParams() == 0; -} - -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 -// 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() { - for (iterator I = begin(), E = end(); I != E; ++I) - I->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(); -} - -void Function::addAttribute(unsigned i, Attributes attr) { - AttributeSet PAL = getAttributes(); - PAL = PAL.addAttr(getContext(), i, attr); - setAttributes(PAL); -} - -void Function::removeAttribute(unsigned i, Attributes attr) { - AttributeSet PAL = getAttributes(); - PAL = PAL.removeAttr(getContext(), i, attr); - 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; - } - } - } -} - -/// copyAttributesFrom - 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<Function>(Src) && "Expected a Function!"); - GlobalValue::copyAttributesFrom(Src); - const Function *SrcF = cast<Function>(Src); - setCallingConv(SrcF->getCallingConv()); - setAttributes(SrcF->getAttributes()); - if (SrcF->hasGC()) - setGC(SrcF->getGC()); - else - clearGC(); -} - -/// 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. -/// -unsigned Function::getIntrinsicID() const { - const ValueName *ValName = this->getValueName(); - if (!ValName) - return 0; - unsigned Len = ValName->getKeyLength(); - const char *Name = ValName->getKeyData(); - - if (Len < 5 || Name[4] != '.' || Name[0] != 'l' || Name[1] != 'l' - || Name[2] != 'v' || Name[3] != 'm') - return 0; // All intrinsics start with 'llvm.' - -#define GET_FUNCTION_RECOGNIZER -#include "llvm/Intrinsics.gen" -#undef GET_FUNCTION_RECOGNIZER - return 0; -} - -std::string Intrinsic::getName(ID id, ArrayRef<Type*> Tys) { - assert(id < num_intrinsics && "Invalid intrinsic ID!"); - static const char * const Table[] = { - "not_intrinsic", -#define GET_INTRINSIC_NAME_TABLE -#include "llvm/Intrinsics.gen" -#undef GET_INTRINSIC_NAME_TABLE - }; - if (Tys.empty()) - return Table[id]; - std::string Result(Table[id]); - for (unsigned i = 0; i < Tys.size(); ++i) { - if (PointerType* PTyp = dyn_cast<PointerType>(Tys[i])) { - Result += ".p" + llvm::utostr(PTyp->getAddressSpace()) + - EVT::getEVT(PTyp->getElementType()).getEVTString(); - } - else if (Tys[i]) - Result += "." + EVT::getEVT(Tys[i]).getEVTString(); - } - 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_F32 = 6, - IIT_F64 = 7, - IIT_V2 = 8, - IIT_V4 = 9, - IIT_V8 = 10, - IIT_V16 = 11, - IIT_V32 = 12, - IIT_MMX = 13, - IIT_PTR = 14, - IIT_ARG = 15, - - // Values from 16+ are only encodable with the inefficient encoding. - IIT_METADATA = 16, - IIT_EMPTYSTRUCT = 17, - IIT_STRUCT2 = 18, - IIT_STRUCT3 = 19, - IIT_STRUCT4 = 20, - IIT_STRUCT5 = 21, - IIT_EXTEND_VEC_ARG = 22, - IIT_TRUNC_VEC_ARG = 23, - IIT_ANYPTR = 24 -}; - - -static void DecodeIITType(unsigned &NextElt, ArrayRef<unsigned char> Infos, - SmallVectorImpl<Intrinsic::IITDescriptor> &OutputTable) { - IIT_Info Info = IIT_Info(Infos[NextElt++]); - unsigned StructElts = 2; - using namespace Intrinsic; - - switch (Info) { - case IIT_Done: - OutputTable.push_back(IITDescriptor::get(IITDescriptor::Void, 0)); - return; - case IIT_MMX: - OutputTable.push_back(IITDescriptor::get(IITDescriptor::MMX, 0)); - return; - case IIT_METADATA: - OutputTable.push_back(IITDescriptor::get(IITDescriptor::Metadata, 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_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_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_VEC_ARG: { - unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]); - OutputTable.push_back(IITDescriptor::get(IITDescriptor::ExtendVecArgument, - ArgInfo)); - return; - } - case IIT_TRUNC_VEC_ARG: { - unsigned ArgInfo = (NextElt == Infos.size() ? 0 : Infos[NextElt++]); - OutputTable.push_back(IITDescriptor::get(IITDescriptor::TruncVecArgument, - ArgInfo)); - return; - } - case IIT_EMPTYSTRUCT: - OutputTable.push_back(IITDescriptor::get(IITDescriptor::Struct, 0)); - return; - case IIT_STRUCT5: ++StructElts; // FALL THROUGH. - case IIT_STRUCT4: ++StructElts; // FALL THROUGH. - case IIT_STRUCT3: ++StructElts; // FALL THROUGH. - 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/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::MMX: return Type::getX86_MMXTy(Context); - case IITDescriptor::Metadata: return Type::getMetadataTy(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, ArrayRef<Type*>(Elts,D.Struct_NumElements)); - } - - case IITDescriptor::Argument: - return Tys[D.getArgumentNumber()]; - case IITDescriptor::ExtendVecArgument: - return VectorType::getExtendedElementVectorType(cast<VectorType>( - Tys[D.getArgumentNumber()])); - - case IITDescriptor::TruncVecArgument: - return VectorType::getTruncatedElementVectorType(cast<VectorType>( - Tys[D.getArgumentNumber()])); - } - 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)); - - 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 - -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/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; -} - |