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Privatize the last bit of Constant-creation state. 

llvm-svn: 78097
This commit is contained in:
Owen Anderson 2009-08-04 20:25:11 +00:00
parent 16dc0cd8a2
commit 1584a29536
4 changed files with 433 additions and 455 deletions
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14
llvm/include/llvm/LLVMContext.h
View File

@ -52,21 +52,9 @@ class VectorType;
/// infrastructure, including the type and constant uniquing tables.
/// LLVMContext itself provides no locking guarantees, so you should be careful
/// to have one context per thread.
class LLVMContext {
struct LLVMContext {
LLVMContextImpl* pImpl;
friend class ConstantInt;
friend class ConstantFP;
friend class ConstantStruct;
friend class ConstantArray;
friend class ConstantVector;
friend class ConstantAggregateZero;
friend class MDNode;
friend class MDString;
friend class ConstantPointerNull;
friend class UndefValue;
friend class ConstantExpr;
public:
LLVMContext();
~LLVMContext();
};

454
llvm/lib/VMCore/Constants.cpp
View File

@ -603,290 +603,6 @@ Constant* ConstantVector::get(Constant* const* Vals, unsigned NumVals) {
return get(std::vector<Constant*>(Vals, Vals+NumVals));
}
namespace llvm {
// We declare several classes private to this file, so use an anonymous
// namespace
namespace {
/// UnaryConstantExpr - This class is private to Constants.cpp, and is used
/// behind the scenes to implement unary constant exprs.
class VISIBILITY_HIDDEN UnaryConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly one operand
void *operator new(size_t s) {
return User::operator new(s, 1);
}
UnaryConstantExpr(unsigned Opcode, Constant *C, const Type *Ty)
: ConstantExpr(Ty, Opcode, &Op<0>(), 1) {
Op<0>() = C;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// BinaryConstantExpr - This class is private to Constants.cpp, and is used
/// behind the scenes to implement binary constant exprs.
class VISIBILITY_HIDDEN BinaryConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly two operands
void *operator new(size_t s) {
return User::operator new(s, 2);
}
BinaryConstantExpr(unsigned Opcode, Constant *C1, Constant *C2)
: ConstantExpr(C1->getType(), Opcode, &Op<0>(), 2) {
Op<0>() = C1;
Op<1>() = C2;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// SelectConstantExpr - This class is private to Constants.cpp, and is used
/// behind the scenes to implement select constant exprs.
class VISIBILITY_HIDDEN SelectConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly three operands
void *operator new(size_t s) {
return User::operator new(s, 3);
}
SelectConstantExpr(Constant *C1, Constant *C2, Constant *C3)
: ConstantExpr(C2->getType(), Instruction::Select, &Op<0>(), 3) {
Op<0>() = C1;
Op<1>() = C2;
Op<2>() = C3;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// ExtractElementConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// extractelement constant exprs.
class VISIBILITY_HIDDEN ExtractElementConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly two operands
void *operator new(size_t s) {
return User::operator new(s, 2);
}
ExtractElementConstantExpr(Constant *C1, Constant *C2)
: ConstantExpr(cast<VectorType>(C1->getType())->getElementType(),
Instruction::ExtractElement, &Op<0>(), 2) {
Op<0>() = C1;
Op<1>() = C2;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// InsertElementConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// insertelement constant exprs.
class VISIBILITY_HIDDEN InsertElementConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly three operands
void *operator new(size_t s) {
return User::operator new(s, 3);
}
InsertElementConstantExpr(Constant *C1, Constant *C2, Constant *C3)
: ConstantExpr(C1->getType(), Instruction::InsertElement,
&Op<0>(), 3) {
Op<0>() = C1;
Op<1>() = C2;
Op<2>() = C3;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// ShuffleVectorConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// shufflevector constant exprs.
class VISIBILITY_HIDDEN ShuffleVectorConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly three operands
void *operator new(size_t s) {
return User::operator new(s, 3);
}
ShuffleVectorConstantExpr(Constant *C1, Constant *C2, Constant *C3)
: ConstantExpr(VectorType::get(
cast<VectorType>(C1->getType())->getElementType(),
cast<VectorType>(C3->getType())->getNumElements()),
Instruction::ShuffleVector,
&Op<0>(), 3) {
Op<0>() = C1;
Op<1>() = C2;
Op<2>() = C3;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// ExtractValueConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// extractvalue constant exprs.
class VISIBILITY_HIDDEN ExtractValueConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly one operand
void *operator new(size_t s) {
return User::operator new(s, 1);
}
ExtractValueConstantExpr(Constant *Agg,
const SmallVector<unsigned, 4> &IdxList,
const Type *DestTy)
: ConstantExpr(DestTy, Instruction::ExtractValue, &Op<0>(), 1),
Indices(IdxList) {
Op<0>() = Agg;
}
/// Indices - These identify which value to extract.
const SmallVector<unsigned, 4> Indices;
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// InsertValueConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// insertvalue constant exprs.
class VISIBILITY_HIDDEN InsertValueConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly one operand
void *operator new(size_t s) {
return User::operator new(s, 2);
}
InsertValueConstantExpr(Constant *Agg, Constant *Val,
const SmallVector<unsigned, 4> &IdxList,
const Type *DestTy)
: ConstantExpr(DestTy, Instruction::InsertValue, &Op<0>(), 2),
Indices(IdxList) {
Op<0>() = Agg;
Op<1>() = Val;
}
/// Indices - These identify the position for the insertion.
const SmallVector<unsigned, 4> Indices;
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// GetElementPtrConstantExpr - This class is private to Constants.cpp, and is
/// used behind the scenes to implement getelementpr constant exprs.
class VISIBILITY_HIDDEN GetElementPtrConstantExpr : public ConstantExpr {
GetElementPtrConstantExpr(Constant *C, const std::vector<Constant*> &IdxList,
const Type *DestTy);
public:
static GetElementPtrConstantExpr *Create(Constant *C,
const std::vector<Constant*>&IdxList,
const Type *DestTy) {
return
new(IdxList.size() + 1) GetElementPtrConstantExpr(C, IdxList, DestTy);
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
// CompareConstantExpr - This class is private to Constants.cpp, and is used
// behind the scenes to implement ICmp and FCmp constant expressions. This is
// needed in order to store the predicate value for these instructions.
struct VISIBILITY_HIDDEN CompareConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
// allocate space for exactly two operands
void *operator new(size_t s) {
return User::operator new(s, 2);
}
unsigned short predicate;
CompareConstantExpr(const Type *ty, Instruction::OtherOps opc,
unsigned short pred, Constant* LHS, Constant* RHS)
: ConstantExpr(ty, opc, &Op<0>(), 2), predicate(pred) {
Op<0>() = LHS;
Op<1>() = RHS;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
} // end anonymous namespace
template <>
struct OperandTraits<UnaryConstantExpr> : FixedNumOperandTraits<1> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(UnaryConstantExpr, Value)
template <>
struct OperandTraits<BinaryConstantExpr> : FixedNumOperandTraits<2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(BinaryConstantExpr, Value)
template <>
struct OperandTraits<SelectConstantExpr> : FixedNumOperandTraits<3> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(SelectConstantExpr, Value)
template <>
struct OperandTraits<ExtractElementConstantExpr> : FixedNumOperandTraits<2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ExtractElementConstantExpr, Value)
template <>
struct OperandTraits<InsertElementConstantExpr> : FixedNumOperandTraits<3> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(InsertElementConstantExpr, Value)
template <>
struct OperandTraits<ShuffleVectorConstantExpr> : FixedNumOperandTraits<3> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ShuffleVectorConstantExpr, Value)
template <>
struct OperandTraits<ExtractValueConstantExpr> : FixedNumOperandTraits<1> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ExtractValueConstantExpr, Value)
template <>
struct OperandTraits<InsertValueConstantExpr> : FixedNumOperandTraits<2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(InsertValueConstantExpr, Value)
template <>
struct OperandTraits<GetElementPtrConstantExpr> : VariadicOperandTraits<1> {
};
GetElementPtrConstantExpr::GetElementPtrConstantExpr
(Constant *C,
const std::vector<Constant*> &IdxList,
const Type *DestTy)
: ConstantExpr(DestTy, Instruction::GetElementPtr,
OperandTraits<GetElementPtrConstantExpr>::op_end(this)
- (IdxList.size()+1),
IdxList.size()+1) {
OperandList[0] = C;
for (unsigned i = 0, E = IdxList.size(); i != E; ++i)
OperandList[i+1] = IdxList[i];
}
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GetElementPtrConstantExpr, Value)
template <>
struct OperandTraits<CompareConstantExpr> : FixedNumOperandTraits<2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CompareConstantExpr, Value)
} // End llvm namespace
// Utility function for determining if a ConstantExpr is a CastOp or not. This
// can't be inline because we don't want to #include Instruction.h into
// Constant.h
@ -1264,134 +980,6 @@ void UndefValue::destroyConstant() {
//---- ConstantExpr::get() implementations...
//
namespace {
struct ExprMapKeyType {
typedef SmallVector<unsigned, 4> IndexList;
ExprMapKeyType(unsigned opc,
const std::vector<Constant*> &ops,
unsigned short pred = 0,
const IndexList &inds = IndexList())
: opcode(opc), predicate(pred), operands(ops), indices(inds) {}
uint16_t opcode;
uint16_t predicate;
std::vector<Constant*> operands;
IndexList indices;
bool operator==(const ExprMapKeyType& that) const {
return this->opcode == that.opcode &&
this->predicate == that.predicate &&
this->operands == that.operands &&
this->indices == that.indices;
}
bool operator<(const ExprMapKeyType & that) const {
return this->opcode < that.opcode ||
(this->opcode == that.opcode && this->predicate < that.predicate) ||
(this->opcode == that.opcode && this->predicate == that.predicate &&
this->operands < that.operands) ||
(this->opcode == that.opcode && this->predicate == that.predicate &&
this->operands == that.operands && this->indices < that.indices);
}
bool operator!=(const ExprMapKeyType& that) const {
return !(*this == that);
}
};
}
namespace llvm {
template<>
struct ConstantCreator<ConstantExpr, Type, ExprMapKeyType> {
static ConstantExpr *create(const Type *Ty, const ExprMapKeyType &V,
unsigned short pred = 0) {
if (Instruction::isCast(V.opcode))
return new UnaryConstantExpr(V.opcode, V.operands[0], Ty);
if ((V.opcode >= Instruction::BinaryOpsBegin &&
V.opcode < Instruction::BinaryOpsEnd))
return new BinaryConstantExpr(V.opcode, V.operands[0], V.operands[1]);
if (V.opcode == Instruction::Select)
return new SelectConstantExpr(V.operands[0], V.operands[1],
V.operands[2]);
if (V.opcode == Instruction::ExtractElement)
return new ExtractElementConstantExpr(V.operands[0], V.operands[1]);
if (V.opcode == Instruction::InsertElement)
return new InsertElementConstantExpr(V.operands[0], V.operands[1],
V.operands[2]);
if (V.opcode == Instruction::ShuffleVector)
return new ShuffleVectorConstantExpr(V.operands[0], V.operands[1],
V.operands[2]);
if (V.opcode == Instruction::InsertValue)
return new InsertValueConstantExpr(V.operands[0], V.operands[1],
V.indices, Ty);
if (V.opcode == Instruction::ExtractValue)
return new ExtractValueConstantExpr(V.operands[0], V.indices, Ty);
if (V.opcode == Instruction::GetElementPtr) {
std::vector<Constant*> IdxList(V.operands.begin()+1, V.operands.end());
return GetElementPtrConstantExpr::Create(V.operands[0], IdxList, Ty);
}
// The compare instructions are weird. We have to encode the predicate
// value and it is combined with the instruction opcode by multiplying
// the opcode by one hundred. We must decode this to get the predicate.
if (V.opcode == Instruction::ICmp)
return new CompareConstantExpr(Ty, Instruction::ICmp, V.predicate,
V.operands[0], V.operands[1]);
if (V.opcode == Instruction::FCmp)
return new CompareConstantExpr(Ty, Instruction::FCmp, V.predicate,
V.operands[0], V.operands[1]);
llvm_unreachable("Invalid ConstantExpr!");
return 0;
}
};
template<>
struct ConvertConstantType<ConstantExpr, Type> {
static void convert(ConstantExpr *OldC, const Type *NewTy) {
Constant *New;
switch (OldC->getOpcode()) {
case Instruction::Trunc:
case Instruction::ZExt:
case Instruction::SExt:
case Instruction::FPTrunc:
case Instruction::FPExt:
case Instruction::UIToFP:
case Instruction::SIToFP:
case Instruction::FPToUI:
case Instruction::FPToSI:
case Instruction::PtrToInt:
case Instruction::IntToPtr:
case Instruction::BitCast:
New = ConstantExpr::getCast(OldC->getOpcode(), OldC->getOperand(0),
NewTy);
break;
case Instruction::Select:
New = ConstantExpr::getSelectTy(NewTy, OldC->getOperand(0),
OldC->getOperand(1),
OldC->getOperand(2));
break;
default:
assert(OldC->getOpcode() >= Instruction::BinaryOpsBegin &&
OldC->getOpcode() < Instruction::BinaryOpsEnd);
New = ConstantExpr::getTy(NewTy, OldC->getOpcode(), OldC->getOperand(0),
OldC->getOperand(1));
break;
case Instruction::GetElementPtr:
// Make everyone now use a constant of the new type...
std::vector<Value*> Idx(OldC->op_begin()+1, OldC->op_end());
New = ConstantExpr::getGetElementPtrTy(NewTy, OldC->getOperand(0),
&Idx[0], Idx.size());
break;
}
assert(New != OldC && "Didn't replace constant??");
OldC->uncheckedReplaceAllUsesWith(New);
OldC->destroyConstant(); // This constant is now dead, destroy it.
}
};
} // end namespace llvm
static ExprMapKeyType getValType(ConstantExpr *CE) {
std::vector<Constant*> Operands;
Operands.reserve(CE->getNumOperands());
@ -1403,9 +991,6 @@ static ExprMapKeyType getValType(ConstantExpr *CE) {
CE->getIndices() : SmallVector<unsigned, 4>());
}
static ManagedStatic<ValueMap<ExprMapKeyType, Type,
ConstantExpr> > ExprConstants;
/// This is a utility function to handle folding of casts and lookup of the
/// cast in the ExprConstants map. It is used by the various get* methods below.
static inline Constant *getFoldedCast(
@ -1415,12 +1000,14 @@ static inline Constant *getFoldedCast(
if (Constant *FC = ConstantFoldCastInstruction(Ty->getContext(), opc, C, Ty))
return FC;
LLVMContextImpl *pImpl = Ty->getContext().pImpl;
// Look up the constant in the table first to ensure uniqueness
std::vector<Constant*> argVec(1, C);
ExprMapKeyType Key(opc, argVec);
// Implicitly locked.
return ExprConstants->getOrCreate(Ty, Key);
return pImpl->ExprConstants.getOrCreate(Ty, Key);
}
Constant *ConstantExpr::getCast(unsigned oc, Constant *C, const Type *Ty) {
@ -1663,8 +1250,10 @@ Constant *ConstantExpr::getTy(const Type *ReqTy, unsigned Opcode,
std::vector<Constant*> argVec(1, C1); argVec.push_back(C2);
ExprMapKeyType Key(Opcode, argVec);
LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
// Implicitly locked.
return ExprConstants->getOrCreate(ReqTy, Key);
return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
}
Constant *ConstantExpr::getCompareTy(unsigned short predicate,
@ -1796,8 +1385,10 @@ Constant *ConstantExpr::getSelectTy(const Type *ReqTy, Constant *C,
argVec[2] = V2;
ExprMapKeyType Key(Instruction::Select, argVec);
LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
// Implicitly locked.
return ExprConstants->getOrCreate(ReqTy, Key);
return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
}
Constant *ConstantExpr::getGetElementPtrTy(const Type *ReqTy, Constant *C,
@ -1822,8 +1413,10 @@ Constant *ConstantExpr::getGetElementPtrTy(const Type *ReqTy, Constant *C,
ArgVec.push_back(cast<Constant>(Idxs[i]));
const ExprMapKeyType Key(Instruction::GetElementPtr, ArgVec);
LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
// Implicitly locked.
return ExprConstants->getOrCreate(ReqTy, Key);
return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
}
Constant *ConstantExpr::getGetElementPtr(Constant *C, Value* const *Idxs,
@ -1859,8 +1452,10 @@ ConstantExpr::getICmp(unsigned short pred, Constant* LHS, Constant* RHS) {
// Get the key type with both the opcode and predicate
const ExprMapKeyType Key(Instruction::ICmp, ArgVec, pred);
LLVMContextImpl *pImpl = LHS->getType()->getContext().pImpl;
// Implicitly locked.
return ExprConstants->getOrCreate(Type::Int1Ty, Key);
return pImpl->ExprConstants.getOrCreate(Type::Int1Ty, Key);
}
Constant *
@ -1879,8 +1474,10 @@ ConstantExpr::getFCmp(unsigned short pred, Constant* LHS, Constant* RHS) {
// Get the key type with both the opcode and predicate
const ExprMapKeyType Key(Instruction::FCmp, ArgVec, pred);
LLVMContextImpl *pImpl = LHS->getType()->getContext().pImpl;
// Implicitly locked.
return ExprConstants->getOrCreate(Type::Int1Ty, Key);
return pImpl->ExprConstants.getOrCreate(Type::Int1Ty, Key);
}
Constant *ConstantExpr::getExtractElementTy(const Type *ReqTy, Constant *Val,
@ -1893,8 +1490,10 @@ Constant *ConstantExpr::getExtractElementTy(const Type *ReqTy, Constant *Val,
ArgVec.push_back(Idx);
const ExprMapKeyType Key(Instruction::ExtractElement,ArgVec);
LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
// Implicitly locked.
return ExprConstants->getOrCreate(ReqTy, Key);
return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
}
Constant *ConstantExpr::getExtractElement(Constant *Val, Constant *Idx) {
@ -1917,8 +1516,10 @@ Constant *ConstantExpr::getInsertElementTy(const Type *ReqTy, Constant *Val,
ArgVec.push_back(Idx);
const ExprMapKeyType Key(Instruction::InsertElement,ArgVec);
LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
// Implicitly locked.
return ExprConstants->getOrCreate(ReqTy, Key);
return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
}
Constant *ConstantExpr::getInsertElement(Constant *Val, Constant *Elt,
@ -1943,8 +1544,10 @@ Constant *ConstantExpr::getShuffleVectorTy(const Type *ReqTy, Constant *V1,
ArgVec.push_back(Mask);
const ExprMapKeyType Key(Instruction::ShuffleVector,ArgVec);
LLVMContextImpl *pImpl = ReqTy->getContext().pImpl;
// Implicitly locked.
return ExprConstants->getOrCreate(ReqTy, Key);
return pImpl->ExprConstants.getOrCreate(ReqTy, Key);
}
Constant *ConstantExpr::getShuffleVector(Constant *V1, Constant *V2,
@ -2113,7 +1716,8 @@ Constant* ConstantExpr::getAShr(Constant* C1, Constant* C2) {
//
void ConstantExpr::destroyConstant() {
// Implicitly locked.
ExprConstants->remove(this);
LLVMContextImpl *pImpl = getType()->getContext().pImpl;
pImpl->ExprConstants.remove(this);
destroyConstantImpl();
}

13
llvm/lib/VMCore/LLVMContextImpl.cpp
View File

@ -21,3 +21,16 @@ using namespace llvm;
LLVMContextImpl::LLVMContextImpl(LLVMContext &C) :
Context(C), TheTrueVal(0), TheFalseVal(0) { }
GetElementPtrConstantExpr::GetElementPtrConstantExpr
(Constant *C,
const std::vector<Constant*> &IdxList,
const Type *DestTy)
: ConstantExpr(DestTy, Instruction::GetElementPtr,
OperandTraits<GetElementPtrConstantExpr>::op_end(this)
- (IdxList.size()+1),
IdxList.size()+1) {
OperandList[0] = C;
for (unsigned i = 0, E = IdxList.size(); i != E; ++i)
OperandList[i+1] = IdxList[i];
}

407
llvm/lib/VMCore/LLVMContextImpl.h
View File

@ -18,6 +18,8 @@
#include "llvm/LLVMContext.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Instructions.h"
#include "llvm/Operator.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/System/Mutex.h"
@ -34,6 +36,297 @@ namespace llvm {
template<class ValType>
struct ConstantTraits;
/// UnaryConstantExpr - This class is private to Constants.cpp, and is used
/// behind the scenes to implement unary constant exprs.
class UnaryConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly one operand
void *operator new(size_t s) {
return User::operator new(s, 1);
}
UnaryConstantExpr(unsigned Opcode, Constant *C, const Type *Ty)
: ConstantExpr(Ty, Opcode, &Op<0>(), 1) {
Op<0>() = C;
}
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// BinaryConstantExpr - This class is private to Constants.cpp, and is used
/// behind the scenes to implement binary constant exprs.
class BinaryConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly two operands
void *operator new(size_t s) {
return User::operator new(s, 2);
}
BinaryConstantExpr(unsigned Opcode, Constant *C1, Constant *C2)
: ConstantExpr(C1->getType(), Opcode, &Op<0>(), 2) {
Op<0>() = C1;
Op<1>() = C2;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// SelectConstantExpr - This class is private to Constants.cpp, and is used
/// behind the scenes to implement select constant exprs.
class SelectConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly three operands
void *operator new(size_t s) {
return User::operator new(s, 3);
}
SelectConstantExpr(Constant *C1, Constant *C2, Constant *C3)
: ConstantExpr(C2->getType(), Instruction::Select, &Op<0>(), 3) {
Op<0>() = C1;
Op<1>() = C2;
Op<2>() = C3;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// ExtractElementConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// extractelement constant exprs.
class ExtractElementConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly two operands
void *operator new(size_t s) {
return User::operator new(s, 2);
}
ExtractElementConstantExpr(Constant *C1, Constant *C2)
: ConstantExpr(cast<VectorType>(C1->getType())->getElementType(),
Instruction::ExtractElement, &Op<0>(), 2) {
Op<0>() = C1;
Op<1>() = C2;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// InsertElementConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// insertelement constant exprs.
class InsertElementConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly three operands
void *operator new(size_t s) {
return User::operator new(s, 3);
}
InsertElementConstantExpr(Constant *C1, Constant *C2, Constant *C3)
: ConstantExpr(C1->getType(), Instruction::InsertElement,
&Op<0>(), 3) {
Op<0>() = C1;
Op<1>() = C2;
Op<2>() = C3;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// ShuffleVectorConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// shufflevector constant exprs.
class ShuffleVectorConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly three operands
void *operator new(size_t s) {
return User::operator new(s, 3);
}
ShuffleVectorConstantExpr(Constant *C1, Constant *C2, Constant *C3)
: ConstantExpr(VectorType::get(
cast<VectorType>(C1->getType())->getElementType(),
cast<VectorType>(C3->getType())->getNumElements()),
Instruction::ShuffleVector,
&Op<0>(), 3) {
Op<0>() = C1;
Op<1>() = C2;
Op<2>() = C3;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// ExtractValueConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// extractvalue constant exprs.
class ExtractValueConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly one operand
void *operator new(size_t s) {
return User::operator new(s, 1);
}
ExtractValueConstantExpr(Constant *Agg,
const SmallVector<unsigned, 4> &IdxList,
const Type *DestTy)
: ConstantExpr(DestTy, Instruction::ExtractValue, &Op<0>(), 1),
Indices(IdxList) {
Op<0>() = Agg;
}
/// Indices - These identify which value to extract.
const SmallVector<unsigned, 4> Indices;
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// InsertValueConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// insertvalue constant exprs.
class InsertValueConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
public:
// allocate space for exactly one operand
void *operator new(size_t s) {
return User::operator new(s, 2);
}
InsertValueConstantExpr(Constant *Agg, Constant *Val,
const SmallVector<unsigned, 4> &IdxList,
const Type *DestTy)
: ConstantExpr(DestTy, Instruction::InsertValue, &Op<0>(), 2),
Indices(IdxList) {
Op<0>() = Agg;
Op<1>() = Val;
}
/// Indices - These identify the position for the insertion.
const SmallVector<unsigned, 4> Indices;
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
/// GetElementPtrConstantExpr - This class is private to Constants.cpp, and is
/// used behind the scenes to implement getelementpr constant exprs.
class GetElementPtrConstantExpr : public ConstantExpr {
GetElementPtrConstantExpr(Constant *C, const std::vector<Constant*> &IdxList,
const Type *DestTy);
public:
static GetElementPtrConstantExpr *Create(Constant *C,
const std::vector<Constant*>&IdxList,
const Type *DestTy) {
return
new(IdxList.size() + 1) GetElementPtrConstantExpr(C, IdxList, DestTy);
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
// CompareConstantExpr - This class is private to Constants.cpp, and is used
// behind the scenes to implement ICmp and FCmp constant expressions. This is
// needed in order to store the predicate value for these instructions.
struct CompareConstantExpr : public ConstantExpr {
void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
// allocate space for exactly two operands
void *operator new(size_t s) {
return User::operator new(s, 2);
}
unsigned short predicate;
CompareConstantExpr(const Type *ty, Instruction::OtherOps opc,
unsigned short pred, Constant* LHS, Constant* RHS)
: ConstantExpr(ty, opc, &Op<0>(), 2), predicate(pred) {
Op<0>() = LHS;
Op<1>() = RHS;
}
/// Transparently provide more efficient getOperand methods.
DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
};
template <>
struct OperandTraits<UnaryConstantExpr> : FixedNumOperandTraits<1> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(UnaryConstantExpr, Value)
template <>
struct OperandTraits<BinaryConstantExpr> : FixedNumOperandTraits<2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(BinaryConstantExpr, Value)
template <>
struct OperandTraits<SelectConstantExpr> : FixedNumOperandTraits<3> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(SelectConstantExpr, Value)
template <>
struct OperandTraits<ExtractElementConstantExpr> : FixedNumOperandTraits<2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ExtractElementConstantExpr, Value)
template <>
struct OperandTraits<InsertElementConstantExpr> : FixedNumOperandTraits<3> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(InsertElementConstantExpr, Value)
template <>
struct OperandTraits<ShuffleVectorConstantExpr> : FixedNumOperandTraits<3> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ShuffleVectorConstantExpr, Value)
template <>
struct OperandTraits<ExtractValueConstantExpr> : FixedNumOperandTraits<1> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(ExtractValueConstantExpr, Value)
template <>
struct OperandTraits<InsertValueConstantExpr> : FixedNumOperandTraits<2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(InsertValueConstantExpr, Value)
template <>
struct OperandTraits<GetElementPtrConstantExpr> : VariadicOperandTraits<1> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GetElementPtrConstantExpr, Value)
template <>
struct OperandTraits<CompareConstantExpr> : FixedNumOperandTraits<2> {
};
DEFINE_TRANSPARENT_OPERAND_ACCESSORS(CompareConstantExpr, Value)
struct ExprMapKeyType {
typedef SmallVector<unsigned, 4> IndexList;
ExprMapKeyType(unsigned opc,
const std::vector<Constant*> &ops,
unsigned short pred = 0,
const IndexList &inds = IndexList())
: opcode(opc), predicate(pred), operands(ops), indices(inds) {}
uint16_t opcode;
uint16_t predicate;
std::vector<Constant*> operands;
IndexList indices;
bool operator==(const ExprMapKeyType& that) const {
return this->opcode == that.opcode &&
this->predicate == that.predicate &&
this->operands == that.operands &&
this->indices == that.indices;
}
bool operator<(const ExprMapKeyType & that) const {
return this->opcode < that.opcode ||
(this->opcode == that.opcode && this->predicate < that.predicate) ||
(this->opcode == that.opcode && this->predicate == that.predicate &&
this->operands < that.operands) ||
(this->opcode == that.opcode && this->predicate == that.predicate &&
this->operands == that.operands && this->indices < that.indices);
}
bool operator!=(const ExprMapKeyType& that) const {
return !(*this == that);
}
};
// The number of operands for each ConstantCreator::create method is
// determined by the ConstantTraits template.
// ConstantCreator - A class that is used to create constants by
@ -42,26 +335,115 @@ struct ConstantTraits;
// constant.
//
template<typename T, typename Alloc>
struct VISIBILITY_HIDDEN ConstantTraits< std::vector<T, Alloc> > {
struct ConstantTraits< std::vector<T, Alloc> > {
static unsigned uses(const std::vector<T, Alloc>& v) {
return v.size();
}
};
template<class ConstantClass, class TypeClass, class ValType>
struct VISIBILITY_HIDDEN ConstantCreator {
struct ConstantCreator {
static ConstantClass *create(const TypeClass *Ty, const ValType &V) {
return new(ConstantTraits<ValType>::uses(V)) ConstantClass(Ty, V);
}
};
template<class ConstantClass, class TypeClass>
struct VISIBILITY_HIDDEN ConvertConstantType {
struct ConvertConstantType {
static void convert(ConstantClass *OldC, const TypeClass *NewTy) {
llvm_unreachable("This type cannot be converted!");
}
};
template<>
struct ConstantCreator<ConstantExpr, Type, ExprMapKeyType> {
static ConstantExpr *create(const Type *Ty, const ExprMapKeyType &V,
unsigned short pred = 0) {
if (Instruction::isCast(V.opcode))
return new UnaryConstantExpr(V.opcode, V.operands[0], Ty);
if ((V.opcode >= Instruction::BinaryOpsBegin &&
V.opcode < Instruction::BinaryOpsEnd))
return new BinaryConstantExpr(V.opcode, V.operands[0], V.operands[1]);
if (V.opcode == Instruction::Select)
return new SelectConstantExpr(V.operands[0], V.operands[1],
V.operands[2]);
if (V.opcode == Instruction::ExtractElement)
return new ExtractElementConstantExpr(V.operands[0], V.operands[1]);
if (V.opcode == Instruction::InsertElement)
return new InsertElementConstantExpr(V.operands[0], V.operands[1],
V.operands[2]);
if (V.opcode == Instruction::ShuffleVector)
return new ShuffleVectorConstantExpr(V.operands[0], V.operands[1],
V.operands[2]);
if (V.opcode == Instruction::InsertValue)
return new InsertValueConstantExpr(V.operands[0], V.operands[1],
V.indices, Ty);
if (V.opcode == Instruction::ExtractValue)
return new ExtractValueConstantExpr(V.operands[0], V.indices, Ty);
if (V.opcode == Instruction::GetElementPtr) {
std::vector<Constant*> IdxList(V.operands.begin()+1, V.operands.end());
return GetElementPtrConstantExpr::Create(V.operands[0], IdxList, Ty);
}
// The compare instructions are weird. We have to encode the predicate
// value and it is combined with the instruction opcode by multiplying
// the opcode by one hundred. We must decode this to get the predicate.
if (V.opcode == Instruction::ICmp)
return new CompareConstantExpr(Ty, Instruction::ICmp, V.predicate,
V.operands[0], V.operands[1]);
if (V.opcode == Instruction::FCmp)
return new CompareConstantExpr(Ty, Instruction::FCmp, V.predicate,
V.operands[0], V.operands[1]);
llvm_unreachable("Invalid ConstantExpr!");
return 0;
}
};
template<>
struct ConvertConstantType<ConstantExpr, Type> {
static void convert(ConstantExpr *OldC, const Type *NewTy) {
Constant *New;
switch (OldC->getOpcode()) {
case Instruction::Trunc:
case Instruction::ZExt:
case Instruction::SExt:
case Instruction::FPTrunc:
case Instruction::FPExt:
case Instruction::UIToFP:
case Instruction::SIToFP:
case Instruction::FPToUI:
case Instruction::FPToSI:
case Instruction::PtrToInt:
case Instruction::IntToPtr:
case Instruction::BitCast:
New = ConstantExpr::getCast(OldC->getOpcode(), OldC->getOperand(0),
NewTy);
break;
case Instruction::Select:
New = ConstantExpr::getSelectTy(NewTy, OldC->getOperand(0),
OldC->getOperand(1),
OldC->getOperand(2));
break;
default:
assert(OldC->getOpcode() >= Instruction::BinaryOpsBegin &&
OldC->getOpcode() < Instruction::BinaryOpsEnd);
New = ConstantExpr::getTy(NewTy, OldC->getOpcode(), OldC->getOperand(0),
OldC->getOperand(1));
break;
case Instruction::GetElementPtr:
// Make everyone now use a constant of the new type...
std::vector<Value*> Idx(OldC->op_begin()+1, OldC->op_end());
New = ConstantExpr::getGetElementPtrTy(NewTy, OldC->getOperand(0),
&Idx[0], Idx.size());
break;
}
assert(New != OldC && "Didn't replace constant??");
OldC->uncheckedReplaceAllUsesWith(New);
OldC->destroyConstant(); // This constant is now dead, destroy it.
}
};
// ConstantAggregateZero does not take extra "value" argument...
template<class ValType>
struct ConstantCreator<ConstantAggregateZero, Type, ValType> {
@ -458,7 +840,7 @@ struct DenseMapAPFloatKeyInfo {
static bool isPod() { return false; }
};
class LLVMContextImpl {
struct LLVMContextImpl {
sys::SmartRWMutex<true> ConstantsLock;
typedef DenseMap<DenseMapAPIntKeyInfo::KeyTy, ConstantInt*,
@ -491,25 +873,16 @@ class LLVMContextImpl {
ValueMap<char, Type, UndefValue> UndefValueConstants;
ValueMap<ExprMapKeyType, Type, ConstantExpr> ExprConstants;
LLVMContext &Context;
ConstantInt *TheTrueVal;
ConstantInt *TheFalseVal;
LLVMContextImpl(LLVMContext &C);
private:
LLVMContextImpl();
LLVMContextImpl(const LLVMContextImpl&);
friend class ConstantInt;
friend class ConstantFP;
friend class ConstantStruct;
friend class ConstantArray;
friend class ConstantVector;
friend class ConstantAggregateZero;
friend class MDNode;
friend class MDString;
friend class ConstantPointerNull;
friend class UndefValue;
public:
LLVMContextImpl(LLVMContext &C);
};
}