#include "llvm/AbstractTypeUser.h"
#include "llvm/DerivedTypes.h"
+#include "llvm/ParameterAttributes.h"
#include "llvm/Constants.h"
#include "llvm/ADT/DepthFirstIterator.h"
#include "llvm/ADT/StringExtras.h"
std::string> > AbstractTypeDescriptions;
Type::Type(const char *Name, TypeID id)
- : ID(id), Abstract(false), SubclassData(0), RefCount(0), ForwardType(0) {
+ : ID(id), Abstract(false), SubclassData(0), RefCount(0), ForwardType(0),
+ NumContainedTys(0), ContainedTys(0) {
assert(Name && Name[0] && "Should use other ctor if no name!");
(*ConcreteTypeDescriptions)[this] = Name;
}
+/// Because of the way Type subclasses are allocated, this function is necessary
+/// to use the correct kind of "delete" operator to deallocate the Type object.
+/// Some type objects (FunctionTy, StructTy) allocate additional space after
+/// the space for their derived type to hold the contained types array of
+/// PATypeHandles. Using this allocation scheme means all the PATypeHandles are
+/// allocated with the type object, decreasing allocations and eliminating the
+/// need for a std::vector to be used in the Type class itself.
+/// @brief Type destruction function
+void Type::destroy() const {
+
+ // Structures and Functions allocate their contained types past the end of
+ // the type object itself. These need to be destroyed differently than the
+ // other types.
+ if (isa<FunctionType>(this) || isa<StructType>(this)) {
+ // First, make sure we destruct any PATypeHandles allocated by these
+ // subclasses. They must be manually destructed.
+ for (unsigned i = 0; i < NumContainedTys; ++i)
+ ContainedTys[i].PATypeHandle::~PATypeHandle();
+
+ // Now call the destructor for the subclass directly because we're going
+ // to delete this as an array of char.
+ if (isa<FunctionType>(this))
+ ((FunctionType*)this)->FunctionType::~FunctionType();
+ else
+ ((StructType*)this)->StructType::~StructType();
+
+ // Finally, remove the memory as an array deallocation of the chars it was
+ // constructed from.
+ delete [] reinterpret_cast<const char*>(this);
+
+ return;
+ }
+
+ // For all the other type subclasses, there is either no contained types or
+ // just one (all Sequentials). For Sequentials, the PATypeHandle is not
+ // allocated past the type object, its included directly in the SequentialType
+ // class. This means we can safely just do "normal" delete of this object and
+ // all the destructors that need to run will be run.
+ delete this;
+}
const Type *Type::getPrimitiveType(TypeID IDNumber) {
switch (IDNumber) {
Result += " ";
Result += getTypeDescription(FTy->getReturnType(), TypeStack) + " (";
unsigned Idx = 1;
+ const ParamAttrsList *Attrs = FTy->getParamAttrs();
for (FunctionType::param_iterator I = FTy->param_begin(),
E = FTy->param_end(); I != E; ++I) {
if (I != FTy->param_begin())
Result += ", ";
- Result += FunctionType::getParamAttrsText(FTy->getParamAttrs(Idx));
+ if (Attrs && Attrs->getParamAttrs(Idx) != ParamAttr::None)
+ Result += Attrs->getParamAttrsTextByIndex(Idx);
Idx++;
Result += getTypeDescription(*I, TypeStack);
}
Result += "...";
}
Result += ")";
- if (FTy->getParamAttrs(0)) {
- Result += " " + FunctionType::getParamAttrsText(FTy->getParamAttrs(0));
+ if (Attrs && Attrs->getParamAttrs(0) != ParamAttr::None) {
+ Result += " " + Attrs->getParamAttrsTextByIndex(0);
}
break;
}
// Structure indexes require 32-bit integer constants.
if (V->getType() == Type::Int32Ty)
if (const ConstantInt *CU = dyn_cast<ConstantInt>(V))
- return CU->getZExtValue() < ContainedTys.size();
+ return CU->getZExtValue() < NumContainedTys;
return false;
}
FunctionType::FunctionType(const Type *Result,
const std::vector<const Type*> &Params,
- bool IsVarArgs, const ParamAttrsList &Attrs)
- : DerivedType(FunctionTyID), isVarArgs(IsVarArgs) {
+ bool IsVarArgs, ParamAttrsList *Attrs)
+ : DerivedType(FunctionTyID), isVarArgs(IsVarArgs), ParamAttrs(Attrs) {
+ ContainedTys = reinterpret_cast<PATypeHandle*>(this+1);
+ NumContainedTys = Params.size() + 1; // + 1 for result type
assert((Result->isFirstClassType() || Result == Type::VoidTy ||
isa<OpaqueType>(Result)) &&
"LLVM functions cannot return aggregates");
bool isAbstract = Result->isAbstract();
- ContainedTys.reserve(Params.size()+1);
- ContainedTys.push_back(PATypeHandle(Result, this));
+ new (&ContainedTys[0]) PATypeHandle(Result, this);
for (unsigned i = 0; i != Params.size(); ++i) {
assert((Params[i]->isFirstClassType() || isa<OpaqueType>(Params[i])) &&
"Function arguments must be value types!");
-
- ContainedTys.push_back(PATypeHandle(Params[i], this));
+ new (&ContainedTys[i+1]) PATypeHandle(Params[i],this);
isAbstract |= Params[i]->isAbstract();
}
- // Set the ParameterAttributes
- if (!Attrs.empty())
- ParamAttrs = new ParamAttrsList(Attrs);
- else
- ParamAttrs = 0;
-
// Calculate whether or not this type is abstract
setAbstract(isAbstract);
StructType::StructType(const std::vector<const Type*> &Types, bool isPacked)
: CompositeType(StructTyID) {
+ ContainedTys = reinterpret_cast<PATypeHandle*>(this + 1);
+ NumContainedTys = Types.size();
setSubclassData(isPacked);
- ContainedTys.reserve(Types.size());
bool isAbstract = false;
for (unsigned i = 0; i < Types.size(); ++i) {
assert(Types[i] != Type::VoidTy && "Void type for structure field!!");
- ContainedTys.push_back(PATypeHandle(Types[i], this));
+ new (&ContainedTys[i]) PATypeHandle(Types[i], this);
isAbstract |= Types[i]->isAbstract();
}
// another (more concrete) type, we must eliminate all references to other
// types, to avoid some circular reference problems.
void DerivedType::dropAllTypeUses() {
- if (!ContainedTys.empty()) {
+ if (NumContainedTys != 0) {
// The type must stay abstract. To do this, we insert a pointer to a type
// that will never get resolved, thus will always be abstract.
static Type *AlwaysOpaqueTy = OpaqueType::get();
static PATypeHolder Holder(AlwaysOpaqueTy);
ContainedTys[0] = AlwaysOpaqueTy;
- // Change the rest of the types to be intty's. It doesn't matter what we
+ // Change the rest of the types to be Int32Ty's. It doesn't matter what we
// pick so long as it doesn't point back to this type. We choose something
// concrete to avoid overhead for adding to AbstracTypeUser lists and stuff.
- for (unsigned i = 1, e = ContainedTys.size(); i != e; ++i)
+ for (unsigned i = 1, e = NumContainedTys; i != e; ++i)
ContainedTys[i] = Type::Int32Ty;
}
}
const FunctionType *FTy2 = cast<FunctionType>(Ty2);
if (FTy->isVarArg() != FTy2->isVarArg() ||
FTy->getNumParams() != FTy2->getNumParams() ||
- FTy->getNumAttrs() != FTy2->getNumAttrs() ||
- FTy->getParamAttrs(0) != FTy2->getParamAttrs(0) ||
!TypesEqual(FTy->getReturnType(), FTy2->getReturnType(), EqTypes))
return false;
+ const ParamAttrsList *Attrs1 = FTy->getParamAttrs();
+ const ParamAttrsList *Attrs2 = FTy2->getParamAttrs();
+ if ((!Attrs1 && Attrs2 && !Attrs2->empty()) ||
+ (!Attrs2 && Attrs1 && !Attrs1->empty()) ||
+ (Attrs1 && Attrs2 && (Attrs1->size() != Attrs2->size() ||
+ (Attrs1->size() > 0 &&
+ Attrs1->getParamAttrs(0) != Attrs2->getParamAttrs(0)))))
+ return false;
+ ParamAttrsList PAL1;
+ if (Attrs1)
+ PAL1 = *Attrs1;
+ ParamAttrsList PAL2;
+ if (Attrs2)
+ PAL2 = *Attrs2;
for (unsigned i = 0, e = FTy2->getNumParams(); i != e; ++i) {
- if (FTy->getParamAttrs(i+1) != FTy->getParamAttrs(i+1))
+ if (PAL1.getParamAttrs(i+1) != PAL2.getParamAttrs(i+1))
return false;
if (!TypesEqual(FTy->getParamType(i), FTy2->getParamType(i), EqTypes))
return false;
unsigned OldTypeHash = ValType::hashTypeStructure(Ty);
// Find the type element we are refining... and change it now!
- for (unsigned i = 0, e = Ty->ContainedTys.size(); i != e; ++i)
+ for (unsigned i = 0, e = Ty->getNumContainedTypes(); i != e; ++i)
if (Ty->ContainedTys[i] == OldType)
Ty->ContainedTys[i] = NewType;
unsigned NewTypeHash = ValType::hashTypeStructure(Ty);
return (BitWidth > 7) && isPowerOf2_32(BitWidth);
}
+APInt IntegerType::getMask() const {
+ return APInt::getAllOnesValue(getBitWidth());
+}
+
// FunctionValType - Define a class to hold the key that goes into the TypeMap
//
namespace llvm {
class FunctionValType {
const Type *RetTy;
std::vector<const Type*> ArgTypes;
- std::vector<FunctionType::ParameterAttributes> ParamAttrs;
+ const ParamAttrsList *ParamAttrs;
bool isVarArg;
public:
FunctionValType(const Type *ret, const std::vector<const Type*> &args,
- bool IVA, const FunctionType::ParamAttrsList &attrs)
- : RetTy(ret), isVarArg(IVA) {
+ bool IVA, const ParamAttrsList *attrs)
+ : RetTy(ret), ParamAttrs(attrs), isVarArg(IVA) {
for (unsigned i = 0; i < args.size(); ++i)
ArgTypes.push_back(args[i]);
- for (unsigned i = 0; i < attrs.size(); ++i)
- ParamAttrs.push_back(attrs[i]);
}
static FunctionValType get(const FunctionType *FT);
static unsigned hashTypeStructure(const FunctionType *FT) {
- return FT->getNumParams()*64+FT->getNumAttrs()*2+FT->isVarArg();
+ unsigned Result = FT->getNumParams()*64 + FT->isVarArg();
+ if (FT->getParamAttrs())
+ Result += FT->getParamAttrs()->size()*2;
+ return Result;
}
inline bool operator<(const FunctionValType &MTV) const {
if (isVarArg < MTV.isVarArg) return true;
if (isVarArg > MTV.isVarArg) return false;
if (ArgTypes < MTV.ArgTypes) return true;
- return ArgTypes == MTV.ArgTypes && ParamAttrs < MTV.ParamAttrs;
+ if (ArgTypes > MTV.ArgTypes) return false;
+ if (ParamAttrs)
+ if (MTV.ParamAttrs)
+ return *ParamAttrs < *MTV.ParamAttrs;
+ else if (ParamAttrs->empty())
+ return true;
+ else
+ return false;
+ else if (MTV.ParamAttrs)
+ if (MTV.ParamAttrs->empty())
+ return false;
+ else
+ return true;
+ return false;
}
};
}
FunctionValType FunctionValType::get(const FunctionType *FT) {
// Build up a FunctionValType
std::vector<const Type *> ParamTypes;
- std::vector<FunctionType::ParameterAttributes> ParamAttrs;
ParamTypes.reserve(FT->getNumParams());
for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i)
ParamTypes.push_back(FT->getParamType(i));
- for (unsigned i = 0, e = FT->getNumAttrs(); i != e; ++i)
- ParamAttrs.push_back(FT->getParamAttrs(i));
return FunctionValType(FT->getReturnType(), ParamTypes, FT->isVarArg(),
- ParamAttrs);
+ FT->getParamAttrs());
}
FunctionType *FunctionType::get(const Type *ReturnType,
const std::vector<const Type*> &Params,
bool isVarArg,
- const std::vector<ParameterAttributes> &Attrs) {
- bool noAttrs = true;
- for (unsigned i = 0, e = Attrs.size(); i < e; ++i)
- if (Attrs[i] != FunctionType::NoAttributeSet) {
- noAttrs = false;
- break;
- }
- const std::vector<FunctionType::ParameterAttributes> NullAttrs;
- const std::vector<FunctionType::ParameterAttributes> *TheAttrs = &Attrs;
- if (noAttrs)
- TheAttrs = &NullAttrs;
- FunctionValType VT(ReturnType, Params, isVarArg, *TheAttrs);
+ ParamAttrsList *Attrs) {
+
+ FunctionValType VT(ReturnType, Params, isVarArg, Attrs);
FunctionType *MT = FunctionTypes->get(VT);
- if (MT) return MT;
+ if (MT) {
+ delete Attrs; // not needed any more
+ return MT;
+ }
+
- MT = new FunctionType(ReturnType, Params, isVarArg, *TheAttrs);
+ MT = (FunctionType*) new char[sizeof(FunctionType) +
+ sizeof(PATypeHandle)*(Params.size()+1)];
+ new (MT) FunctionType(ReturnType, Params, isVarArg, Attrs);
FunctionTypes->add(VT, MT);
#ifdef DEBUG_MERGE_TYPES
return MT;
}
-FunctionType::ParameterAttributes
-FunctionType::getParamAttrs(unsigned Idx) const {
- if (!ParamAttrs)
- return NoAttributeSet;
- if (Idx >= ParamAttrs->size())
- return NoAttributeSet;
- return (*ParamAttrs)[Idx];
+FunctionType::~FunctionType() {
+ delete ParamAttrs;
}
-std::string FunctionType::getParamAttrsText(ParameterAttributes Attr) {
- std::string Result;
- if (Attr & ZExtAttribute)
- Result += "zext ";
- if (Attr & SExtAttribute)
- Result += "sext ";
- if (Attr & NoReturnAttribute)
- Result += "noreturn ";
- if (Attr & InRegAttribute)
- Result += "inreg ";
- if (Attr & StructRetAttribute)
- Result += "sret ";
- return Result;
+bool FunctionType::isStructReturn() const {
+ if (ParamAttrs)
+ return ParamAttrs->paramHasAttr(1, ParamAttr::StructRet);
+ return false;
}
//===----------------------------------------------------------------------===//
if (ST) return ST;
// Value not found. Derive a new type!
- StructTypes->add(STV, ST = new StructType(ETypes, isPacked));
+ ST = (StructType*) new char[sizeof(StructType) +
+ sizeof(PATypeHandle) * ETypes.size()];
+ new (ST) StructType(ETypes, isPacked);
+ StructTypes->add(STV, ST);
#ifdef DEBUG_MERGE_TYPES
DOUT << "Derived new type: " << *ST << "\n";
DOUT << "DELETEing unused abstract type: <" << *this
<< ">[" << (void*)this << "]" << "\n";
#endif
- delete this; // No users of this abstract type!
+ this->destroy();
}
}
-
// refineAbstractTypeTo - This function is used when it is discovered that
// the 'this' abstract type is actually equivalent to the NewType specified.
// This causes all users of 'this' to switch to reference the more concrete type