//===----------------------------------------------------------------------===//
#include "llvm/Constants.h"
-#include "ConstantFolding.h"
+#include "ConstantFold.h"
#include "llvm/DerivedTypes.h"
#include "llvm/GlobalValue.h"
#include "llvm/Instructions.h"
-#include "llvm/SymbolTable.h"
#include "llvm/Module.h"
#include "llvm/ADT/StringExtras.h"
-#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Compiler.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallVector.h"
#include <algorithm>
-#include <iostream>
+#include <map>
using namespace llvm;
-ConstantBool *ConstantBool::True = new ConstantBool(true);
-ConstantBool *ConstantBool::False = new ConstantBool(false);
-
-
//===----------------------------------------------------------------------===//
// Constant Class
//===----------------------------------------------------------------------===//
Value *V = use_back();
#ifndef NDEBUG // Only in -g mode...
if (!isa<Constant>(V))
- std::cerr << "While deleting: " << *this
- << "\n\nUse still stuck around after Def is destroyed: "
- << *V << "\n\n";
+ DOUT << "While deleting: " << *this
+ << "\n\nUse still stuck around after Def is destroyed: "
+ << *V << "\n\n";
#endif
assert(isa<Constant>(V) && "References remain to Constant being destroyed");
Constant *CV = cast<Constant>(V);
delete this;
}
-// Static constructor to create a '0' constant of arbitrary type...
-Constant *Constant::getNullValue(const Type *Ty) {
- switch (Ty->getTypeID()) {
- case Type::BoolTyID: {
- static Constant *NullBool = ConstantBool::get(false);
- return NullBool;
- }
- case Type::SByteTyID: {
- static Constant *NullSByte = ConstantSInt::get(Type::SByteTy, 0);
- return NullSByte;
- }
- case Type::UByteTyID: {
- static Constant *NullUByte = ConstantUInt::get(Type::UByteTy, 0);
- return NullUByte;
- }
- case Type::ShortTyID: {
- static Constant *NullShort = ConstantSInt::get(Type::ShortTy, 0);
- return NullShort;
- }
- case Type::UShortTyID: {
- static Constant *NullUShort = ConstantUInt::get(Type::UShortTy, 0);
- return NullUShort;
- }
- case Type::IntTyID: {
- static Constant *NullInt = ConstantSInt::get(Type::IntTy, 0);
- return NullInt;
- }
- case Type::UIntTyID: {
- static Constant *NullUInt = ConstantUInt::get(Type::UIntTy, 0);
- return NullUInt;
- }
- case Type::LongTyID: {
- static Constant *NullLong = ConstantSInt::get(Type::LongTy, 0);
- return NullLong;
- }
- case Type::ULongTyID: {
- static Constant *NullULong = ConstantUInt::get(Type::ULongTy, 0);
- return NullULong;
- }
+/// canTrap - Return true if evaluation of this constant could trap. This is
+/// true for things like constant expressions that could divide by zero.
+bool Constant::canTrap() const {
+ assert(getType()->isFirstClassType() && "Cannot evaluate aggregate vals!");
+ // The only thing that could possibly trap are constant exprs.
+ const ConstantExpr *CE = dyn_cast<ConstantExpr>(this);
+ if (!CE) return false;
+
+ // ConstantExpr traps if any operands can trap.
+ for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
+ if (getOperand(i)->canTrap())
+ return true;
- case Type::FloatTyID: {
- static Constant *NullFloat = ConstantFP::get(Type::FloatTy, 0);
- return NullFloat;
- }
- case Type::DoubleTyID: {
- static Constant *NullDouble = ConstantFP::get(Type::DoubleTy, 0);
- return NullDouble;
+ // Otherwise, only specific operations can trap.
+ switch (CE->getOpcode()) {
+ default:
+ return false;
+ case Instruction::UDiv:
+ case Instruction::SDiv:
+ case Instruction::FDiv:
+ case Instruction::URem:
+ case Instruction::SRem:
+ case Instruction::FRem:
+ // Div and rem can trap if the RHS is not known to be non-zero.
+ if (!isa<ConstantInt>(getOperand(1)) || getOperand(1)->isNullValue())
+ return true;
+ return false;
}
+}
+
+/// ContaintsRelocations - Return true if the constant value contains
+/// relocations which cannot be resolved at compile time.
+bool Constant::ContainsRelocations() const {
+ if (isa<GlobalValue>(this))
+ return true;
+ for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
+ if (getOperand(i)->ContainsRelocations())
+ return true;
+ return false;
+}
+// Static constructor to create a '0' constant of arbitrary type...
+Constant *Constant::getNullValue(const Type *Ty) {
+ static uint64_t zero[2] = {0, 0};
+ switch (Ty->getTypeID()) {
+ case Type::IntegerTyID:
+ return ConstantInt::get(Ty, 0);
+ case Type::FloatTyID:
+ return ConstantFP::get(Ty, APFloat(APInt(32, 0)));
+ case Type::DoubleTyID:
+ return ConstantFP::get(Ty, APFloat(APInt(64, 0)));
+ case Type::X86_FP80TyID:
+ return ConstantFP::get(Ty, APFloat(APInt(80, 2, zero)));
+ case Type::FP128TyID:
+ case Type::PPC_FP128TyID:
+ return ConstantFP::get(Ty, APFloat(APInt(128, 2, zero)));
case Type::PointerTyID:
return ConstantPointerNull::get(cast<PointerType>(Ty));
-
case Type::StructTyID:
case Type::ArrayTyID:
- case Type::PackedTyID:
+ case Type::VectorTyID:
return ConstantAggregateZero::get(Ty);
default:
// Function, Label, or Opaque type?
}
}
-// Static constructor to create the maximum constant of an integral type...
-ConstantIntegral *ConstantIntegral::getMaxValue(const Type *Ty) {
- switch (Ty->getTypeID()) {
- case Type::BoolTyID: return ConstantBool::True;
- case Type::SByteTyID:
- case Type::ShortTyID:
- case Type::IntTyID:
- case Type::LongTyID: {
- // Calculate 011111111111111...
- unsigned TypeBits = Ty->getPrimitiveSize()*8;
- int64_t Val = INT64_MAX; // All ones
- Val >>= 64-TypeBits; // Shift out unwanted 1 bits...
- return ConstantSInt::get(Ty, Val);
- }
+Constant *Constant::getAllOnesValue(const Type *Ty) {
+ if (const IntegerType* ITy = dyn_cast<IntegerType>(Ty))
+ return ConstantInt::get(APInt::getAllOnesValue(ITy->getBitWidth()));
+ return ConstantVector::getAllOnesValue(cast<VectorType>(Ty));
+}
- case Type::UByteTyID:
- case Type::UShortTyID:
- case Type::UIntTyID:
- case Type::ULongTyID: return getAllOnesValue(Ty);
+// Static constructor to create an integral constant with all bits set
+ConstantInt *ConstantInt::getAllOnesValue(const Type *Ty) {
+ if (const IntegerType* ITy = dyn_cast<IntegerType>(Ty))
+ return ConstantInt::get(APInt::getAllOnesValue(ITy->getBitWidth()));
+ return 0;
+}
- default: return 0;
- }
+/// @returns the value for a vector integer constant of the given type that
+/// has all its bits set to true.
+/// @brief Get the all ones value
+ConstantVector *ConstantVector::getAllOnesValue(const VectorType *Ty) {
+ std::vector<Constant*> Elts;
+ Elts.resize(Ty->getNumElements(),
+ ConstantInt::getAllOnesValue(Ty->getElementType()));
+ assert(Elts[0] && "Not a vector integer type!");
+ return cast<ConstantVector>(ConstantVector::get(Elts));
}
-// Static constructor to create the minimum constant for an integral type...
-ConstantIntegral *ConstantIntegral::getMinValue(const Type *Ty) {
- switch (Ty->getTypeID()) {
- case Type::BoolTyID: return ConstantBool::False;
- case Type::SByteTyID:
- case Type::ShortTyID:
- case Type::IntTyID:
- case Type::LongTyID: {
- // Calculate 1111111111000000000000
- unsigned TypeBits = Ty->getPrimitiveSize()*8;
- int64_t Val = -1; // All ones
- Val <<= TypeBits-1; // Shift over to the right spot
- return ConstantSInt::get(Ty, Val);
- }
- case Type::UByteTyID:
- case Type::UShortTyID:
- case Type::UIntTyID:
- case Type::ULongTyID: return ConstantUInt::get(Ty, 0);
+//===----------------------------------------------------------------------===//
+// ConstantInt
+//===----------------------------------------------------------------------===//
- default: return 0;
- }
+ConstantInt::ConstantInt(const IntegerType *Ty, const APInt& V)
+ : Constant(Ty, ConstantIntVal, 0, 0), Val(V) {
+ assert(V.getBitWidth() == Ty->getBitWidth() && "Invalid constant for type");
}
-// Static constructor to create an integral constant with all bits set
-ConstantIntegral *ConstantIntegral::getAllOnesValue(const Type *Ty) {
- switch (Ty->getTypeID()) {
- case Type::BoolTyID: return ConstantBool::True;
- case Type::SByteTyID:
- case Type::ShortTyID:
- case Type::IntTyID:
- case Type::LongTyID: return ConstantSInt::get(Ty, -1);
-
- case Type::UByteTyID:
- case Type::UShortTyID:
- case Type::UIntTyID:
- case Type::ULongTyID: {
- // Calculate ~0 of the right type...
- unsigned TypeBits = Ty->getPrimitiveSize()*8;
- uint64_t Val = ~0ULL; // All ones
- Val >>= 64-TypeBits; // Shift out unwanted 1 bits...
- return ConstantUInt::get(Ty, Val);
- }
- default: return 0;
+ConstantInt *ConstantInt::TheTrueVal = 0;
+ConstantInt *ConstantInt::TheFalseVal = 0;
+
+namespace llvm {
+ void CleanupTrueFalse(void *) {
+ ConstantInt::ResetTrueFalse();
}
}
-bool ConstantUInt::isAllOnesValue() const {
- unsigned TypeBits = getType()->getPrimitiveSize()*8;
- uint64_t Val = ~0ULL; // All ones
- Val >>= 64-TypeBits; // Shift out inappropriate bits
- return getValue() == Val;
+static ManagedCleanup<llvm::CleanupTrueFalse> TrueFalseCleanup;
+
+ConstantInt *ConstantInt::CreateTrueFalseVals(bool WhichOne) {
+ assert(TheTrueVal == 0 && TheFalseVal == 0);
+ TheTrueVal = get(Type::Int1Ty, 1);
+ TheFalseVal = get(Type::Int1Ty, 0);
+
+ // Ensure that llvm_shutdown nulls out TheTrueVal/TheFalseVal.
+ TrueFalseCleanup.Register();
+
+ return WhichOne ? TheTrueVal : TheFalseVal;
}
-//===----------------------------------------------------------------------===//
-// ConstantXXX Classes
-//===----------------------------------------------------------------------===//
+namespace {
+ struct DenseMapAPIntKeyInfo {
+ struct KeyTy {
+ APInt val;
+ const Type* type;
+ KeyTy(const APInt& V, const Type* Ty) : val(V), type(Ty) {}
+ KeyTy(const KeyTy& that) : val(that.val), type(that.type) {}
+ bool operator==(const KeyTy& that) const {
+ return type == that.type && this->val == that.val;
+ }
+ bool operator!=(const KeyTy& that) const {
+ return !this->operator==(that);
+ }
+ };
+ static inline KeyTy getEmptyKey() { return KeyTy(APInt(1,0), 0); }
+ static inline KeyTy getTombstoneKey() { return KeyTy(APInt(1,1), 0); }
+ static unsigned getHashValue(const KeyTy &Key) {
+ return DenseMapInfo<void*>::getHashValue(Key.type) ^
+ Key.val.getHashValue();
+ }
+ static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
+ return LHS == RHS;
+ }
+ static bool isPod() { return false; }
+ };
+}
+
+
+typedef DenseMap<DenseMapAPIntKeyInfo::KeyTy, ConstantInt*,
+ DenseMapAPIntKeyInfo> IntMapTy;
+static ManagedStatic<IntMapTy> IntConstants;
+
+ConstantInt *ConstantInt::get(const Type *Ty, uint64_t V, bool isSigned) {
+ const IntegerType *ITy = cast<IntegerType>(Ty);
+ return get(APInt(ITy->getBitWidth(), V, isSigned));
+}
+
+// Get a ConstantInt from an APInt. Note that the value stored in the DenseMap
+// as the key, is a DensMapAPIntKeyInfo::KeyTy which has provided the
+// operator== and operator!= to ensure that the DenseMap doesn't attempt to
+// compare APInt's of different widths, which would violate an APInt class
+// invariant which generates an assertion.
+ConstantInt *ConstantInt::get(const APInt& V) {
+ // Get the corresponding integer type for the bit width of the value.
+ const IntegerType *ITy = IntegerType::get(V.getBitWidth());
+ // get an existing value or the insertion position
+ DenseMapAPIntKeyInfo::KeyTy Key(V, ITy);
+ ConstantInt *&Slot = (*IntConstants)[Key];
+ // if it exists, return it.
+ if (Slot)
+ return Slot;
+ // otherwise create a new one, insert it, and return it.
+ return Slot = new ConstantInt(ITy, V);
+}
//===----------------------------------------------------------------------===//
-// Normal Constructors
+// ConstantFP
+//===----------------------------------------------------------------------===//
-ConstantIntegral::ConstantIntegral(const Type *Ty, ValueTy VT, uint64_t V)
- : Constant(Ty, VT, 0, 0) {
- Val.Unsigned = V;
+ConstantFP::ConstantFP(const Type *Ty, const APFloat& V)
+ : Constant(Ty, ConstantFPVal, 0, 0), Val(V) {
+ // temporary
+ if (Ty==Type::FloatTy)
+ assert(&V.getSemantics()==&APFloat::IEEEsingle);
+ else if (Ty==Type::DoubleTy)
+ assert(&V.getSemantics()==&APFloat::IEEEdouble);
+ else if (Ty==Type::X86_FP80Ty)
+ assert(&V.getSemantics()==&APFloat::x87DoubleExtended);
+ else if (Ty==Type::FP128Ty)
+ assert(&V.getSemantics()==&APFloat::IEEEquad);
+ else
+ assert(0);
}
-ConstantBool::ConstantBool(bool V)
- : ConstantIntegral(Type::BoolTy, ConstantBoolVal, V) {
+bool ConstantFP::isNullValue() const {
+ return Val.isZero() && !Val.isNegative();
}
-ConstantInt::ConstantInt(const Type *Ty, ValueTy VT, uint64_t V)
- : ConstantIntegral(Ty, VT, V) {
+ConstantFP *ConstantFP::getNegativeZero(const Type *Ty) {
+ APFloat apf = cast <ConstantFP>(Constant::getNullValue(Ty))->getValueAPF();
+ apf.changeSign();
+ return ConstantFP::get(Ty, apf);
}
-ConstantSInt::ConstantSInt(const Type *Ty, int64_t V)
- : ConstantInt(Ty, ConstantSIntVal, V) {
- assert(Ty->isInteger() && Ty->isSigned() &&
- "Illegal type for signed integer constant!");
- assert(isValueValidForType(Ty, V) && "Value too large for type!");
+bool ConstantFP::isExactlyValue(const APFloat& V) const {
+ return Val.bitwiseIsEqual(V);
}
-ConstantUInt::ConstantUInt(const Type *Ty, uint64_t V)
- : ConstantInt(Ty, ConstantUIntVal, V) {
- assert(Ty->isInteger() && Ty->isUnsigned() &&
- "Illegal type for unsigned integer constant!");
- assert(isValueValidForType(Ty, V) && "Value too large for type!");
+namespace {
+ struct DenseMapAPFloatKeyInfo {
+ struct KeyTy {
+ APFloat val;
+ KeyTy(const APFloat& V) : val(V){}
+ KeyTy(const KeyTy& that) : val(that.val) {}
+ bool operator==(const KeyTy& that) const {
+ return this->val.bitwiseIsEqual(that.val);
+ }
+ bool operator!=(const KeyTy& that) const {
+ return !this->operator==(that);
+ }
+ };
+ static inline KeyTy getEmptyKey() {
+ return KeyTy(APFloat(APFloat::Bogus,1));
+ }
+ static inline KeyTy getTombstoneKey() {
+ return KeyTy(APFloat(APFloat::Bogus,2));
+ }
+ static unsigned getHashValue(const KeyTy &Key) {
+ return Key.val.getHashValue();
+ }
+ static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
+ return LHS == RHS;
+ }
+ static bool isPod() { return false; }
+ };
}
-ConstantFP::ConstantFP(const Type *Ty, double V)
- : Constant(Ty, ConstantFPVal, 0, 0) {
- assert(isValueValidForType(Ty, V) && "Value too large for type!");
- Val = V;
+//---- ConstantFP::get() implementation...
+//
+typedef DenseMap<DenseMapAPFloatKeyInfo::KeyTy, ConstantFP*,
+ DenseMapAPFloatKeyInfo> FPMapTy;
+
+static ManagedStatic<FPMapTy> FPConstants;
+
+ConstantFP *ConstantFP::get(const Type *Ty, const APFloat& V) {
+ // temporary
+ if (Ty==Type::FloatTy)
+ assert(&V.getSemantics()==&APFloat::IEEEsingle);
+ else if (Ty==Type::DoubleTy)
+ assert(&V.getSemantics()==&APFloat::IEEEdouble);
+ else if (Ty==Type::X86_FP80Ty)
+ assert(&V.getSemantics()==&APFloat::x87DoubleExtended);
+ else if (Ty==Type::FP128Ty)
+ assert(&V.getSemantics()==&APFloat::IEEEquad);
+ else
+ assert(0);
+
+ DenseMapAPFloatKeyInfo::KeyTy Key(V);
+ ConstantFP *&Slot = (*FPConstants)[Key];
+ if (Slot) return Slot;
+ return Slot = new ConstantFP(Ty, V);
}
+//===----------------------------------------------------------------------===//
+// ConstantXXX Classes
+//===----------------------------------------------------------------------===//
+
+
ConstantArray::ConstantArray(const ArrayType *T,
const std::vector<Constant*> &V)
: Constant(T, ConstantArrayVal, new Use[V.size()], V.size()) {
}
-ConstantPacked::ConstantPacked(const PackedType *T,
+ConstantVector::ConstantVector(const VectorType *T,
const std::vector<Constant*> &V)
- : Constant(T, ConstantPackedVal, new Use[V.size()], V.size()) {
+ : Constant(T, ConstantVectorVal, new Use[V.size()], V.size()) {
Use *OL = OperandList;
for (std::vector<Constant*>::const_iterator I = V.begin(), E = V.end();
I != E; ++I, ++OL) {
assert((C->getType() == T->getElementType() ||
(T->isAbstract() &&
C->getType()->getTypeID() == T->getElementType()->getTypeID())) &&
- "Initializer for packed element doesn't match packed element type!");
+ "Initializer for vector element doesn't match vector element type!");
OL->init(C, this);
}
}
-ConstantPacked::~ConstantPacked() {
+ConstantVector::~ConstantVector() {
delete [] OperandList;
}
+// 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.
-namespace {
class VISIBILITY_HIDDEN UnaryConstantExpr : public ConstantExpr {
Use Op;
public:
UnaryConstantExpr(unsigned Opcode, Constant *C, const Type *Ty)
: ConstantExpr(Ty, Opcode, &Op, 1), Op(C, this) {}
};
-}
-
-static bool isSetCC(unsigned Opcode) {
- return Opcode == Instruction::SetEQ || Opcode == Instruction::SetNE ||
- Opcode == Instruction::SetLT || Opcode == Instruction::SetGT ||
- Opcode == Instruction::SetLE || Opcode == Instruction::SetGE;
-}
/// BinaryConstantExpr - This class is private to Constants.cpp, and is used
/// behind the scenes to implement binary constant exprs.
-namespace {
class VISIBILITY_HIDDEN BinaryConstantExpr : public ConstantExpr {
Use Ops[2];
public:
BinaryConstantExpr(unsigned Opcode, Constant *C1, Constant *C2)
- : ConstantExpr(isSetCC(Opcode) ? Type::BoolTy : C1->getType(),
- Opcode, Ops, 2) {
+ : ConstantExpr(C1->getType(), Opcode, Ops, 2) {
Ops[0].init(C1, this);
Ops[1].init(C2, this);
}
};
-}
/// SelectConstantExpr - This class is private to Constants.cpp, and is used
/// behind the scenes to implement select constant exprs.
-namespace {
class VISIBILITY_HIDDEN SelectConstantExpr : public ConstantExpr {
Use Ops[3];
public:
Ops[2].init(C3, this);
}
};
-}
/// ExtractElementConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// extractelement constant exprs.
-namespace {
class VISIBILITY_HIDDEN ExtractElementConstantExpr : public ConstantExpr {
Use Ops[2];
public:
ExtractElementConstantExpr(Constant *C1, Constant *C2)
- : ConstantExpr(cast<PackedType>(C1->getType())->getElementType(),
+ : ConstantExpr(cast<VectorType>(C1->getType())->getElementType(),
Instruction::ExtractElement, Ops, 2) {
Ops[0].init(C1, this);
Ops[1].init(C2, this);
}
};
-}
/// InsertElementConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// insertelement constant exprs.
-namespace {
class VISIBILITY_HIDDEN InsertElementConstantExpr : public ConstantExpr {
Use Ops[3];
public:
Ops[2].init(C3, this);
}
};
-}
/// ShuffleVectorConstantExpr - This class is private to
/// Constants.cpp, and is used behind the scenes to implement
/// shufflevector constant exprs.
-namespace {
class VISIBILITY_HIDDEN ShuffleVectorConstantExpr : public ConstantExpr {
Use Ops[3];
public:
Ops[2].init(C3, this);
}
};
-}
/// GetElementPtrConstantExpr - This class is private to Constants.cpp, and is
/// used behind the scenes to implement getelementpr constant exprs.
-namespace {
struct VISIBILITY_HIDDEN GetElementPtrConstantExpr : public ConstantExpr {
GetElementPtrConstantExpr(Constant *C, const std::vector<Constant*> &IdxList,
const Type *DestTy)
delete [] OperandList;
}
};
+
+// 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 {
+ unsigned short predicate;
+ Use Ops[2];
+ CompareConstantExpr(Instruction::OtherOps opc, unsigned short pred,
+ Constant* LHS, Constant* RHS)
+ : ConstantExpr(Type::Int1Ty, opc, Ops, 2), predicate(pred) {
+ OperandList[0].init(LHS, this);
+ OperandList[1].init(RHS, this);
+ }
+};
+
+} // end anonymous 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
+bool ConstantExpr::isCast() const {
+ return Instruction::isCast(getOpcode());
+}
+
+bool ConstantExpr::isCompare() const {
+ return getOpcode() == Instruction::ICmp || getOpcode() == Instruction::FCmp;
}
/// ConstantExpr::get* - Return some common constants without having to
/// specify the full Instruction::OPCODE identifier.
///
Constant *ConstantExpr::getNeg(Constant *C) {
- if (!C->getType()->isFloatingPoint())
- return get(Instruction::Sub, getNullValue(C->getType()), C);
- else
- return get(Instruction::Sub, ConstantFP::get(C->getType(), -0.0), C);
+ return get(Instruction::Sub,
+ ConstantExpr::getZeroValueForNegationExpr(C->getType()),
+ C);
}
Constant *ConstantExpr::getNot(Constant *C) {
- assert(isa<ConstantIntegral>(C) && "Cannot NOT a nonintegral type!");
+ assert(isa<IntegerType>(C->getType()) && "Cannot NOT a nonintegral value!");
return get(Instruction::Xor, C,
- ConstantIntegral::getAllOnesValue(C->getType()));
+ ConstantInt::getAllOnesValue(C->getType()));
}
Constant *ConstantExpr::getAdd(Constant *C1, Constant *C2) {
return get(Instruction::Add, C1, C2);
Constant *ConstantExpr::getMul(Constant *C1, Constant *C2) {
return get(Instruction::Mul, C1, C2);
}
-Constant *ConstantExpr::getDiv(Constant *C1, Constant *C2) {
- return get(Instruction::Div, C1, C2);
+Constant *ConstantExpr::getUDiv(Constant *C1, Constant *C2) {
+ return get(Instruction::UDiv, C1, C2);
+}
+Constant *ConstantExpr::getSDiv(Constant *C1, Constant *C2) {
+ return get(Instruction::SDiv, C1, C2);
+}
+Constant *ConstantExpr::getFDiv(Constant *C1, Constant *C2) {
+ return get(Instruction::FDiv, C1, C2);
+}
+Constant *ConstantExpr::getURem(Constant *C1, Constant *C2) {
+ return get(Instruction::URem, C1, C2);
+}
+Constant *ConstantExpr::getSRem(Constant *C1, Constant *C2) {
+ return get(Instruction::SRem, C1, C2);
}
-Constant *ConstantExpr::getRem(Constant *C1, Constant *C2) {
- return get(Instruction::Rem, C1, C2);
+Constant *ConstantExpr::getFRem(Constant *C1, Constant *C2) {
+ return get(Instruction::FRem, C1, C2);
}
Constant *ConstantExpr::getAnd(Constant *C1, Constant *C2) {
return get(Instruction::And, C1, C2);
Constant *ConstantExpr::getXor(Constant *C1, Constant *C2) {
return get(Instruction::Xor, C1, C2);
}
-Constant *ConstantExpr::getSetEQ(Constant *C1, Constant *C2) {
- return get(Instruction::SetEQ, C1, C2);
-}
-Constant *ConstantExpr::getSetNE(Constant *C1, Constant *C2) {
- return get(Instruction::SetNE, C1, C2);
-}
-Constant *ConstantExpr::getSetLT(Constant *C1, Constant *C2) {
- return get(Instruction::SetLT, C1, C2);
-}
-Constant *ConstantExpr::getSetGT(Constant *C1, Constant *C2) {
- return get(Instruction::SetGT, C1, C2);
-}
-Constant *ConstantExpr::getSetLE(Constant *C1, Constant *C2) {
- return get(Instruction::SetLE, C1, C2);
-}
-Constant *ConstantExpr::getSetGE(Constant *C1, Constant *C2) {
- return get(Instruction::SetGE, C1, C2);
+unsigned ConstantExpr::getPredicate() const {
+ assert(getOpcode() == Instruction::FCmp || getOpcode() == Instruction::ICmp);
+ return dynamic_cast<const CompareConstantExpr*>(this)->predicate;
}
Constant *ConstantExpr::getShl(Constant *C1, Constant *C2) {
return get(Instruction::Shl, C1, C2);
}
-Constant *ConstantExpr::getShr(Constant *C1, Constant *C2) {
- return get(Instruction::Shr, C1, C2);
+Constant *ConstantExpr::getLShr(Constant *C1, Constant *C2) {
+ return get(Instruction::LShr, C1, C2);
}
-
-Constant *ConstantExpr::getUShr(Constant *C1, Constant *C2) {
- if (C1->getType()->isUnsigned()) return getShr(C1, C2);
- return getCast(getShr(getCast(C1,
- C1->getType()->getUnsignedVersion()), C2), C1->getType());
-}
-
-Constant *ConstantExpr::getSShr(Constant *C1, Constant *C2) {
- if (C1->getType()->isSigned()) return getShr(C1, C2);
- return getCast(getShr(getCast(C1,
- C1->getType()->getSignedVersion()), C2), C1->getType());
+Constant *ConstantExpr::getAShr(Constant *C1, Constant *C2) {
+ return get(Instruction::AShr, C1, C2);
}
/// getWithOperandReplaced - Return a constant expression identical to this
/// one, but with the specified operand set to the specified value.
-Constant *ConstantExpr::getWithOperandReplaced(unsigned OpNo,
- Constant *Op) const {
+Constant *
+ConstantExpr::getWithOperandReplaced(unsigned OpNo, Constant *Op) const {
assert(OpNo < getNumOperands() && "Operand num is out of range!");
assert(Op->getType() == getOperand(OpNo)->getType() &&
"Replacing operand with value of different type!");
Constant *Op0, *Op1, *Op2;
switch (getOpcode()) {
- case Instruction::Cast:
- return ConstantExpr::getCast(Op, getType());
+ 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:
+ return ConstantExpr::getCast(getOpcode(), Op, getType());
case Instruction::Select:
Op0 = (OpNo == 0) ? Op : getOperand(0);
Op1 = (OpNo == 1) ? Op : getOperand(1);
Op2 = (OpNo == 2) ? Op : getOperand(2);
return ConstantExpr::getShuffleVector(Op0, Op1, Op2);
case Instruction::GetElementPtr: {
- std::vector<Constant*> Ops;
+ SmallVector<Constant*, 8> Ops;
+ Ops.resize(getNumOperands());
for (unsigned i = 1, e = getNumOperands(); i != e; ++i)
- Ops.push_back(getOperand(i));
+ Ops[i] = getOperand(i);
if (OpNo == 0)
- return ConstantExpr::getGetElementPtr(Op, Ops);
+ return ConstantExpr::getGetElementPtr(Op, &Ops[0], Ops.size());
Ops[OpNo-1] = Op;
- return ConstantExpr::getGetElementPtr(getOperand(0), Ops);
+ return ConstantExpr::getGetElementPtr(getOperand(0), &Ops[0], Ops.size());
}
default:
assert(getNumOperands() == 2 && "Must be binary operator?");
return const_cast<ConstantExpr*>(this);
switch (getOpcode()) {
- case Instruction::Cast:
- return ConstantExpr::getCast(Ops[0], getType());
+ 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:
+ return ConstantExpr::getCast(getOpcode(), Ops[0], getType());
case Instruction::Select:
return ConstantExpr::getSelect(Ops[0], Ops[1], Ops[2]);
case Instruction::InsertElement:
return ConstantExpr::getExtractElement(Ops[0], Ops[1]);
case Instruction::ShuffleVector:
return ConstantExpr::getShuffleVector(Ops[0], Ops[1], Ops[2]);
- case Instruction::GetElementPtr: {
- std::vector<Constant*> ActualOps(Ops.begin()+1, Ops.end());
- return ConstantExpr::getGetElementPtr(Ops[0], ActualOps);
- }
+ case Instruction::GetElementPtr:
+ return ConstantExpr::getGetElementPtr(Ops[0], &Ops[1], Ops.size()-1);
+ case Instruction::ICmp:
+ case Instruction::FCmp:
+ return ConstantExpr::getCompare(getPredicate(), Ops[0], Ops[1]);
default:
assert(getNumOperands() == 2 && "Must be binary operator?");
return ConstantExpr::get(getOpcode(), Ops[0], Ops[1]);
//===----------------------------------------------------------------------===//
// isValueValidForType implementations
-bool ConstantSInt::isValueValidForType(const Type *Ty, int64_t Val) {
- switch (Ty->getTypeID()) {
- default:
- return false; // These can't be represented as integers!!!
- // Signed types...
- case Type::SByteTyID:
- return (Val <= INT8_MAX && Val >= INT8_MIN);
- case Type::ShortTyID:
- return (Val <= INT16_MAX && Val >= INT16_MIN);
- case Type::IntTyID:
- return (Val <= int(INT32_MAX) && Val >= int(INT32_MIN));
- case Type::LongTyID:
- return true; // This is the largest type...
- }
-}
-
-bool ConstantUInt::isValueValidForType(const Type *Ty, uint64_t Val) {
- switch (Ty->getTypeID()) {
- default:
- return false; // These can't be represented as integers!!!
-
- // Unsigned types...
- case Type::UByteTyID:
- return (Val <= UINT8_MAX);
- case Type::UShortTyID:
- return (Val <= UINT16_MAX);
- case Type::UIntTyID:
- return (Val <= UINT32_MAX);
- case Type::ULongTyID:
- return true; // This is the largest type...
- }
-}
-
-bool ConstantFP::isValueValidForType(const Type *Ty, double Val) {
+bool ConstantInt::isValueValidForType(const Type *Ty, uint64_t Val) {
+ unsigned NumBits = cast<IntegerType>(Ty)->getBitWidth(); // assert okay
+ if (Ty == Type::Int1Ty)
+ return Val == 0 || Val == 1;
+ if (NumBits >= 64)
+ return true; // always true, has to fit in largest type
+ uint64_t Max = (1ll << NumBits) - 1;
+ return Val <= Max;
+}
+
+bool ConstantInt::isValueValidForType(const Type *Ty, int64_t Val) {
+ unsigned NumBits = cast<IntegerType>(Ty)->getBitWidth(); // assert okay
+ if (Ty == Type::Int1Ty)
+ return Val == 0 || Val == 1 || Val == -1;
+ if (NumBits >= 64)
+ return true; // always true, has to fit in largest type
+ int64_t Min = -(1ll << (NumBits-1));
+ int64_t Max = (1ll << (NumBits-1)) - 1;
+ return (Val >= Min && Val <= Max);
+}
+
+bool ConstantFP::isValueValidForType(const Type *Ty, const APFloat& Val) {
+ // convert modifies in place, so make a copy.
+ APFloat Val2 = APFloat(Val);
switch (Ty->getTypeID()) {
default:
return false; // These can't be represented as floating point!
- // TODO: Figure out how to test if a double can be cast to a float!
+ // FIXME rounding mode needs to be more flexible
case Type::FloatTyID:
+ return &Val2.getSemantics() == &APFloat::IEEEsingle ||
+ Val2.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven) ==
+ APFloat::opOK;
case Type::DoubleTyID:
- return true; // This is the largest type...
+ return &Val2.getSemantics() == &APFloat::IEEEsingle ||
+ &Val2.getSemantics() == &APFloat::IEEEdouble ||
+ Val2.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven) ==
+ APFloat::opOK;
+ case Type::X86_FP80TyID:
+ return &Val2.getSemantics() == &APFloat::IEEEsingle ||
+ &Val2.getSemantics() == &APFloat::IEEEdouble ||
+ &Val2.getSemantics() == &APFloat::x87DoubleExtended;
+ case Type::FP128TyID:
+ return &Val2.getSemantics() == &APFloat::IEEEsingle ||
+ &Val2.getSemantics() == &APFloat::IEEEdouble ||
+ &Val2.getSemantics() == &APFloat::IEEEquad;
}
}
///
AbstractTypeMapTy AbstractTypeMap;
- friend void Constant::clearAllValueMaps();
- private:
- void clear(std::vector<Constant *> &Constants) {
- for(typename MapTy::iterator I = Map.begin(); I != Map.end(); ++I)
- Constants.push_back(I->second);
- Map.clear();
- AbstractTypeMap.clear();
- InverseMap.clear();
- }
-
public:
typename MapTy::iterator map_end() { return Map.end(); }
ConstantClass *getOrCreate(const TypeClass *Ty, const ValType &V) {
MapKey Lookup(Ty, V);
typename MapTy::iterator I = Map.lower_bound(Lookup);
+ // Is it in the map?
if (I != Map.end() && I->first == Lookup)
- return static_cast<ConstantClass *>(I->second); // Is it in the map?
+ return static_cast<ConstantClass *>(I->second);
// If no preexisting value, create one now...
ConstantClass *Result =
}
void dump() const {
- std::cerr << "Constant.cpp: ValueMap\n";
+ DOUT << "Constant.cpp: ValueMap\n";
}
};
}
-//---- ConstantUInt::get() and ConstantSInt::get() implementations...
-//
-static ValueMap< int64_t, Type, ConstantSInt> SIntConstants;
-static ValueMap<uint64_t, Type, ConstantUInt> UIntConstants;
-
-ConstantSInt *ConstantSInt::get(const Type *Ty, int64_t V) {
- return SIntConstants.getOrCreate(Ty, V);
-}
-
-ConstantUInt *ConstantUInt::get(const Type *Ty, uint64_t V) {
- return UIntConstants.getOrCreate(Ty, V);
-}
-ConstantInt *ConstantInt::get(const Type *Ty, unsigned char V) {
- assert(V <= 127 && "Can only be used with very small positive constants!");
- if (Ty->isSigned()) return ConstantSInt::get(Ty, V);
- return ConstantUInt::get(Ty, V);
-}
-
-//---- ConstantFP::get() implementation...
-//
-namespace llvm {
- template<>
- struct ConstantCreator<ConstantFP, Type, uint64_t> {
- static ConstantFP *create(const Type *Ty, uint64_t V) {
- assert(Ty == Type::DoubleTy);
- return new ConstantFP(Ty, BitsToDouble(V));
- }
- };
- template<>
- struct ConstantCreator<ConstantFP, Type, uint32_t> {
- static ConstantFP *create(const Type *Ty, uint32_t V) {
- assert(Ty == Type::FloatTy);
- return new ConstantFP(Ty, BitsToFloat(V));
- }
- };
-}
-
-static ValueMap<uint64_t, Type, ConstantFP> DoubleConstants;
-static ValueMap<uint32_t, Type, ConstantFP> FloatConstants;
-
-bool ConstantFP::isNullValue() const {
- return DoubleToBits(Val) == 0;
-}
-
-bool ConstantFP::isExactlyValue(double V) const {
- return DoubleToBits(V) == DoubleToBits(Val);
-}
-
-
-ConstantFP *ConstantFP::get(const Type *Ty, double V) {
- if (Ty == Type::FloatTy) {
- // Force the value through memory to normalize it.
- return FloatConstants.getOrCreate(Ty, FloatToBits(V));
- } else {
- assert(Ty == Type::DoubleTy);
- return DoubleConstants.getOrCreate(Ty, DoubleToBits(V));
- }
-}
//---- ConstantAggregateZero::get() implementation...
//
};
}
-static ValueMap<char, Type, ConstantAggregateZero> AggZeroConstants;
+static ManagedStatic<ValueMap<char, Type,
+ ConstantAggregateZero> > AggZeroConstants;
static char getValType(ConstantAggregateZero *CPZ) { return 0; }
Constant *ConstantAggregateZero::get(const Type *Ty) {
- assert((isa<StructType>(Ty) || isa<ArrayType>(Ty) || isa<PackedType>(Ty)) &&
+ assert((isa<StructType>(Ty) || isa<ArrayType>(Ty) || isa<VectorType>(Ty)) &&
"Cannot create an aggregate zero of non-aggregate type!");
- return AggZeroConstants.getOrCreate(Ty, 0);
+ return AggZeroConstants->getOrCreate(Ty, 0);
}
// destroyConstant - Remove the constant from the constant table...
//
void ConstantAggregateZero::destroyConstant() {
- AggZeroConstants.remove(this);
+ AggZeroConstants->remove(this);
destroyConstantImpl();
}
typedef ValueMap<std::vector<Constant*>, ArrayType,
ConstantArray, true /*largekey*/> ArrayConstantsTy;
-static ArrayConstantsTy ArrayConstants;
+static ManagedStatic<ArrayConstantsTy> ArrayConstants;
Constant *ConstantArray::get(const ArrayType *Ty,
const std::vector<Constant*> &V) {
if (!V.empty()) {
Constant *C = V[0];
if (!C->isNullValue())
- return ArrayConstants.getOrCreate(Ty, V);
+ return ArrayConstants->getOrCreate(Ty, V);
for (unsigned i = 1, e = V.size(); i != e; ++i)
if (V[i] != C)
- return ArrayConstants.getOrCreate(Ty, V);
+ return ArrayConstants->getOrCreate(Ty, V);
}
return ConstantAggregateZero::get(Ty);
}
// destroyConstant - Remove the constant from the constant table...
//
void ConstantArray::destroyConstant() {
- ArrayConstants.remove(this);
+ ArrayConstants->remove(this);
destroyConstantImpl();
}
Constant *ConstantArray::get(const std::string &Str, bool AddNull) {
std::vector<Constant*> ElementVals;
for (unsigned i = 0; i < Str.length(); ++i)
- ElementVals.push_back(ConstantSInt::get(Type::SByteTy, Str[i]));
+ ElementVals.push_back(ConstantInt::get(Type::Int8Ty, Str[i]));
// Add a null terminator to the string...
if (AddNull) {
- ElementVals.push_back(ConstantSInt::get(Type::SByteTy, 0));
+ ElementVals.push_back(ConstantInt::get(Type::Int8Ty, 0));
}
- ArrayType *ATy = ArrayType::get(Type::SByteTy, ElementVals.size());
+ ArrayType *ATy = ArrayType::get(Type::Int8Ty, ElementVals.size());
return ConstantArray::get(ATy, ElementVals);
}
-/// isString - This method returns true if the array is an array of sbyte or
-/// ubyte, and if the elements of the array are all ConstantInt's.
+/// isString - This method returns true if the array is an array of i8, and
+/// if the elements of the array are all ConstantInt's.
bool ConstantArray::isString() const {
- // Check the element type for sbyte or ubyte...
- if (getType()->getElementType() != Type::UByteTy &&
- getType()->getElementType() != Type::SByteTy)
+ // Check the element type for i8...
+ if (getType()->getElementType() != Type::Int8Ty)
return false;
// Check the elements to make sure they are all integers, not constant
// expressions.
return true;
}
-// getAsString - If the sub-element type of this array is either sbyte or ubyte,
+/// isCString - This method returns true if the array is a string (see
+/// isString) and it ends in a null byte \0 and does not contains any other
+/// null bytes except its terminator.
+bool ConstantArray::isCString() const {
+ // Check the element type for i8...
+ if (getType()->getElementType() != Type::Int8Ty)
+ return false;
+ Constant *Zero = Constant::getNullValue(getOperand(0)->getType());
+ // Last element must be a null.
+ if (getOperand(getNumOperands()-1) != Zero)
+ return false;
+ // Other elements must be non-null integers.
+ for (unsigned i = 0, e = getNumOperands()-1; i != e; ++i) {
+ if (!isa<ConstantInt>(getOperand(i)))
+ return false;
+ if (getOperand(i) == Zero)
+ return false;
+ }
+ return true;
+}
+
+
+// getAsString - If the sub-element type of this array is i8
// then this method converts the array to an std::string and returns it.
// Otherwise, it asserts out.
//
assert(isString() && "Not a string!");
std::string Result;
for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
- Result += (char)cast<ConstantInt>(getOperand(i))->getRawValue();
+ Result += (char)cast<ConstantInt>(getOperand(i))->getZExtValue();
return Result;
}
typedef ValueMap<std::vector<Constant*>, StructType,
ConstantStruct, true /*largekey*/> StructConstantsTy;
-static StructConstantsTy StructConstants;
+static ManagedStatic<StructConstantsTy> StructConstants;
static std::vector<Constant*> getValType(ConstantStruct *CS) {
std::vector<Constant*> Elements;
// Create a ConstantAggregateZero value if all elements are zeros...
for (unsigned i = 0, e = V.size(); i != e; ++i)
if (!V[i]->isNullValue())
- return StructConstants.getOrCreate(Ty, V);
+ return StructConstants->getOrCreate(Ty, V);
return ConstantAggregateZero::get(Ty);
}
-Constant *ConstantStruct::get(const std::vector<Constant*> &V) {
+Constant *ConstantStruct::get(const std::vector<Constant*> &V, bool packed) {
std::vector<const Type*> StructEls;
StructEls.reserve(V.size());
for (unsigned i = 0, e = V.size(); i != e; ++i)
StructEls.push_back(V[i]->getType());
- return get(StructType::get(StructEls), V);
+ return get(StructType::get(StructEls, packed), V);
}
// destroyConstant - Remove the constant from the constant table...
//
void ConstantStruct::destroyConstant() {
- StructConstants.remove(this);
+ StructConstants->remove(this);
destroyConstantImpl();
}
-//---- ConstantPacked::get() implementation...
+//---- ConstantVector::get() implementation...
//
namespace llvm {
template<>
- struct ConvertConstantType<ConstantPacked, PackedType> {
- static void convert(ConstantPacked *OldC, const PackedType *NewTy) {
+ struct ConvertConstantType<ConstantVector, VectorType> {
+ static void convert(ConstantVector *OldC, const VectorType *NewTy) {
// Make everyone now use a constant of the new type...
std::vector<Constant*> C;
for (unsigned i = 0, e = OldC->getNumOperands(); i != e; ++i)
C.push_back(cast<Constant>(OldC->getOperand(i)));
- Constant *New = ConstantPacked::get(NewTy, C);
+ Constant *New = ConstantVector::get(NewTy, C);
assert(New != OldC && "Didn't replace constant??");
OldC->uncheckedReplaceAllUsesWith(New);
OldC->destroyConstant(); // This constant is now dead, destroy it.
};
}
-static std::vector<Constant*> getValType(ConstantPacked *CP) {
+static std::vector<Constant*> getValType(ConstantVector *CP) {
std::vector<Constant*> Elements;
Elements.reserve(CP->getNumOperands());
for (unsigned i = 0, e = CP->getNumOperands(); i != e; ++i)
return Elements;
}
-static ValueMap<std::vector<Constant*>, PackedType,
- ConstantPacked> PackedConstants;
+static ManagedStatic<ValueMap<std::vector<Constant*>, VectorType,
+ ConstantVector> > VectorConstants;
-Constant *ConstantPacked::get(const PackedType *Ty,
+Constant *ConstantVector::get(const VectorType *Ty,
const std::vector<Constant*> &V) {
- // If this is an all-zero packed, return a ConstantAggregateZero object
+ // If this is an all-zero vector, return a ConstantAggregateZero object
if (!V.empty()) {
Constant *C = V[0];
if (!C->isNullValue())
- return PackedConstants.getOrCreate(Ty, V);
+ return VectorConstants->getOrCreate(Ty, V);
for (unsigned i = 1, e = V.size(); i != e; ++i)
if (V[i] != C)
- return PackedConstants.getOrCreate(Ty, V);
+ return VectorConstants->getOrCreate(Ty, V);
}
return ConstantAggregateZero::get(Ty);
}
-Constant *ConstantPacked::get(const std::vector<Constant*> &V) {
+Constant *ConstantVector::get(const std::vector<Constant*> &V) {
assert(!V.empty() && "Cannot infer type if V is empty");
- return get(PackedType::get(V.front()->getType(),V.size()), V);
+ return get(VectorType::get(V.front()->getType(),V.size()), V);
}
// destroyConstant - Remove the constant from the constant table...
//
-void ConstantPacked::destroyConstant() {
- PackedConstants.remove(this);
+void ConstantVector::destroyConstant() {
+ VectorConstants->remove(this);
destroyConstantImpl();
}
+/// This function will return true iff every element in this vector constant
+/// is set to all ones.
+/// @returns true iff this constant's emements are all set to all ones.
+/// @brief Determine if the value is all ones.
+bool ConstantVector::isAllOnesValue() const {
+ // Check out first element.
+ const Constant *Elt = getOperand(0);
+ const ConstantInt *CI = dyn_cast<ConstantInt>(Elt);
+ if (!CI || !CI->isAllOnesValue()) return false;
+ // Then make sure all remaining elements point to the same value.
+ for (unsigned I = 1, E = getNumOperands(); I < E; ++I) {
+ if (getOperand(I) != Elt) return false;
+ }
+ return true;
+}
+
//---- ConstantPointerNull::get() implementation...
//
};
}
-static ValueMap<char, PointerType, ConstantPointerNull> NullPtrConstants;
+static ManagedStatic<ValueMap<char, PointerType,
+ ConstantPointerNull> > NullPtrConstants;
static char getValType(ConstantPointerNull *) {
return 0;
ConstantPointerNull *ConstantPointerNull::get(const PointerType *Ty) {
- return NullPtrConstants.getOrCreate(Ty, 0);
+ return NullPtrConstants->getOrCreate(Ty, 0);
}
// destroyConstant - Remove the constant from the constant table...
//
void ConstantPointerNull::destroyConstant() {
- NullPtrConstants.remove(this);
+ NullPtrConstants->remove(this);
destroyConstantImpl();
}
};
}
-static ValueMap<char, Type, UndefValue> UndefValueConstants;
+static ManagedStatic<ValueMap<char, Type, UndefValue> > UndefValueConstants;
static char getValType(UndefValue *) {
return 0;
UndefValue *UndefValue::get(const Type *Ty) {
- return UndefValueConstants.getOrCreate(Ty, 0);
+ return UndefValueConstants->getOrCreate(Ty, 0);
}
// destroyConstant - Remove the constant from the constant table.
//
void UndefValue::destroyConstant() {
- UndefValueConstants.remove(this);
+ UndefValueConstants->remove(this);
destroyConstantImpl();
}
-
-
//---- ConstantExpr::get() implementations...
//
-typedef std::pair<unsigned, std::vector<Constant*> > ExprMapKeyType;
+
+struct ExprMapKeyType {
+ explicit ExprMapKeyType(unsigned opc, std::vector<Constant*> ops,
+ unsigned short pred = 0) : opcode(opc), predicate(pred), operands(ops) { }
+ uint16_t opcode;
+ uint16_t predicate;
+ std::vector<Constant*> operands;
+ bool operator==(const ExprMapKeyType& that) const {
+ return this->opcode == that.opcode &&
+ this->predicate == that.predicate &&
+ this->operands == that.operands;
+ }
+ 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);
+ }
+
+ 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) {
- if (V.first == Instruction::Cast)
- return new UnaryConstantExpr(Instruction::Cast, V.second[0], Ty);
- if ((V.first >= Instruction::BinaryOpsBegin &&
- V.first < Instruction::BinaryOpsEnd) ||
- V.first == Instruction::Shl || V.first == Instruction::Shr)
- return new BinaryConstantExpr(V.first, V.second[0], V.second[1]);
- if (V.first == Instruction::Select)
- return new SelectConstantExpr(V.second[0], V.second[1], V.second[2]);
- if (V.first == Instruction::ExtractElement)
- return new ExtractElementConstantExpr(V.second[0], V.second[1]);
- if (V.first == Instruction::InsertElement)
- return new InsertElementConstantExpr(V.second[0], V.second[1],
- V.second[2]);
- if (V.first == Instruction::ShuffleVector)
- return new ShuffleVectorConstantExpr(V.second[0], V.second[1],
- V.second[2]);
-
- assert(V.first == Instruction::GetElementPtr && "Invalid ConstantExpr!");
+ 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::GetElementPtr) {
+ std::vector<Constant*> IdxList(V.operands.begin()+1, V.operands.end());
+ return new GetElementPtrConstantExpr(V.operands[0], IdxList, Ty);
+ }
- std::vector<Constant*> IdxList(V.second.begin()+1, V.second.end());
- return new GetElementPtrConstantExpr(V.second[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(Instruction::ICmp, V.predicate,
+ V.operands[0], V.operands[1]);
+ if (V.opcode == Instruction::FCmp)
+ return new CompareConstantExpr(Instruction::FCmp, V.predicate,
+ V.operands[0], V.operands[1]);
+ assert(0 && "Invalid ConstantExpr!");
+ return 0;
}
};
static void convert(ConstantExpr *OldC, const Type *NewTy) {
Constant *New;
switch (OldC->getOpcode()) {
- case Instruction::Cast:
- New = ConstantExpr::getCast(OldC->getOperand(0), NewTy);
+ 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;
- case Instruction::Shl:
- case Instruction::Shr:
- New = ConstantExpr::getShiftTy(NewTy, OldC->getOpcode(),
- OldC->getOperand(0), OldC->getOperand(1));
- break;
default:
assert(OldC->getOpcode() >= Instruction::BinaryOpsBegin &&
- OldC->getOpcode() < Instruction::BinaryOpsEnd);
+ 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);
+ New = ConstantExpr::getGetElementPtrTy(NewTy, OldC->getOperand(0),
+ &Idx[0], Idx.size());
break;
}
Operands.reserve(CE->getNumOperands());
for (unsigned i = 0, e = CE->getNumOperands(); i != e; ++i)
Operands.push_back(cast<Constant>(CE->getOperand(i)));
- return ExprMapKeyType(CE->getOpcode(), Operands);
+ return ExprMapKeyType(CE->getOpcode(), Operands,
+ CE->isCompare() ? CE->getPredicate() : 0);
}
-static ValueMap<ExprMapKeyType, Type, ConstantExpr> ExprConstants;
+static ManagedStatic<ValueMap<ExprMapKeyType, Type,
+ ConstantExpr> > ExprConstants;
-Constant *ConstantExpr::getCast(Constant *C, const Type *Ty) {
+/// This is a utility function to handle folding of casts and lookup of the
+/// cast in the ExprConstants map. It is usedby the various get* methods below.
+static inline Constant *getFoldedCast(
+ Instruction::CastOps opc, Constant *C, const Type *Ty) {
assert(Ty->isFirstClassType() && "Cannot cast to an aggregate type!");
-
- if (Constant *FC = ConstantFoldCastInstruction(C, Ty))
- return FC; // Fold a few common cases...
+ // Fold a few common cases
+ if (Constant *FC = ConstantFoldCastInstruction(opc, C, Ty))
+ return FC;
// Look up the constant in the table first to ensure uniqueness
std::vector<Constant*> argVec(1, C);
- ExprMapKeyType Key = std::make_pair(Instruction::Cast, argVec);
- return ExprConstants.getOrCreate(Ty, Key);
+ ExprMapKeyType Key(opc, argVec);
+ return ExprConstants->getOrCreate(Ty, Key);
}
+
+Constant *ConstantExpr::getCast(unsigned oc, Constant *C, const Type *Ty) {
+ Instruction::CastOps opc = Instruction::CastOps(oc);
+ assert(Instruction::isCast(opc) && "opcode out of range");
+ assert(C && Ty && "Null arguments to getCast");
+ assert(Ty->isFirstClassType() && "Cannot cast to an aggregate type!");
-Constant *ConstantExpr::getSignExtend(Constant *C, const Type *Ty) {
- assert(C->getType()->isIntegral() && Ty->isIntegral() &&
- C->getType()->getPrimitiveSize() <= Ty->getPrimitiveSize() &&
- "This is an illegal sign extension!");
- if (C->getType() != Type::BoolTy) {
- C = ConstantExpr::getCast(C, C->getType()->getSignedVersion());
- return ConstantExpr::getCast(C, Ty);
- } else {
- if (C == ConstantBool::True)
- return ConstantIntegral::getAllOnesValue(Ty);
- else
- return ConstantIntegral::getNullValue(Ty);
+ switch (opc) {
+ default:
+ assert(0 && "Invalid cast opcode");
+ break;
+ case Instruction::Trunc: return getTrunc(C, Ty);
+ case Instruction::ZExt: return getZExt(C, Ty);
+ case Instruction::SExt: return getSExt(C, Ty);
+ case Instruction::FPTrunc: return getFPTrunc(C, Ty);
+ case Instruction::FPExt: return getFPExtend(C, Ty);
+ case Instruction::UIToFP: return getUIToFP(C, Ty);
+ case Instruction::SIToFP: return getSIToFP(C, Ty);
+ case Instruction::FPToUI: return getFPToUI(C, Ty);
+ case Instruction::FPToSI: return getFPToSI(C, Ty);
+ case Instruction::PtrToInt: return getPtrToInt(C, Ty);
+ case Instruction::IntToPtr: return getIntToPtr(C, Ty);
+ case Instruction::BitCast: return getBitCast(C, Ty);
}
+ return 0;
+}
+
+Constant *ConstantExpr::getZExtOrBitCast(Constant *C, const Type *Ty) {
+ if (C->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits())
+ return getCast(Instruction::BitCast, C, Ty);
+ return getCast(Instruction::ZExt, C, Ty);
}
-Constant *ConstantExpr::getZeroExtend(Constant *C, const Type *Ty) {
- assert(C->getType()->isIntegral() && Ty->isIntegral() &&
- C->getType()->getPrimitiveSize() <= Ty->getPrimitiveSize() &&
- "This is an illegal zero extension!");
- if (C->getType() != Type::BoolTy)
- C = ConstantExpr::getCast(C, C->getType()->getUnsignedVersion());
- return ConstantExpr::getCast(C, Ty);
+Constant *ConstantExpr::getSExtOrBitCast(Constant *C, const Type *Ty) {
+ if (C->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits())
+ return getCast(Instruction::BitCast, C, Ty);
+ return getCast(Instruction::SExt, C, Ty);
}
-Constant *ConstantExpr::getSizeOf(const Type *Ty) {
- // sizeof is implemented as: (ulong) gep (Ty*)null, 1
- return getCast(
- getGetElementPtr(getNullValue(PointerType::get(Ty)),
- std::vector<Constant*>(1, ConstantInt::get(Type::UIntTy, 1))),
- Type::ULongTy);
+Constant *ConstantExpr::getTruncOrBitCast(Constant *C, const Type *Ty) {
+ if (C->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits())
+ return getCast(Instruction::BitCast, C, Ty);
+ return getCast(Instruction::Trunc, C, Ty);
+}
+
+Constant *ConstantExpr::getPointerCast(Constant *S, const Type *Ty) {
+ assert(isa<PointerType>(S->getType()) && "Invalid cast");
+ assert((Ty->isInteger() || isa<PointerType>(Ty)) && "Invalid cast");
+
+ if (Ty->isInteger())
+ return getCast(Instruction::PtrToInt, S, Ty);
+ return getCast(Instruction::BitCast, S, Ty);
+}
+
+Constant *ConstantExpr::getIntegerCast(Constant *C, const Type *Ty,
+ bool isSigned) {
+ assert(C->getType()->isInteger() && Ty->isInteger() && "Invalid cast");
+ unsigned SrcBits = C->getType()->getPrimitiveSizeInBits();
+ unsigned DstBits = Ty->getPrimitiveSizeInBits();
+ Instruction::CastOps opcode =
+ (SrcBits == DstBits ? Instruction::BitCast :
+ (SrcBits > DstBits ? Instruction::Trunc :
+ (isSigned ? Instruction::SExt : Instruction::ZExt)));
+ return getCast(opcode, C, Ty);
+}
+
+Constant *ConstantExpr::getFPCast(Constant *C, const Type *Ty) {
+ assert(C->getType()->isFloatingPoint() && Ty->isFloatingPoint() &&
+ "Invalid cast");
+ unsigned SrcBits = C->getType()->getPrimitiveSizeInBits();
+ unsigned DstBits = Ty->getPrimitiveSizeInBits();
+ if (SrcBits == DstBits)
+ return C; // Avoid a useless cast
+ Instruction::CastOps opcode =
+ (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt);
+ return getCast(opcode, C, Ty);
+}
+
+Constant *ConstantExpr::getTrunc(Constant *C, const Type *Ty) {
+ assert(C->getType()->isInteger() && "Trunc operand must be integer");
+ assert(Ty->isInteger() && "Trunc produces only integral");
+ assert(C->getType()->getPrimitiveSizeInBits() > Ty->getPrimitiveSizeInBits()&&
+ "SrcTy must be larger than DestTy for Trunc!");
+
+ return getFoldedCast(Instruction::Trunc, C, Ty);
}
-Constant *ConstantExpr::getPtrPtrFromArrayPtr(Constant *C) {
- // pointer from array is implemented as: getelementptr arr ptr, 0, 0
- static std::vector<Constant*> Indices(2, ConstantUInt::get(Type::UIntTy, 0));
+Constant *ConstantExpr::getSExt(Constant *C, const Type *Ty) {
+ assert(C->getType()->isInteger() && "SEXt operand must be integral");
+ assert(Ty->isInteger() && "SExt produces only integer");
+ assert(C->getType()->getPrimitiveSizeInBits() < Ty->getPrimitiveSizeInBits()&&
+ "SrcTy must be smaller than DestTy for SExt!");
- return ConstantExpr::getGetElementPtr(C, Indices);
+ return getFoldedCast(Instruction::SExt, C, Ty);
+}
+
+Constant *ConstantExpr::getZExt(Constant *C, const Type *Ty) {
+ assert(C->getType()->isInteger() && "ZEXt operand must be integral");
+ assert(Ty->isInteger() && "ZExt produces only integer");
+ assert(C->getType()->getPrimitiveSizeInBits() < Ty->getPrimitiveSizeInBits()&&
+ "SrcTy must be smaller than DestTy for ZExt!");
+
+ return getFoldedCast(Instruction::ZExt, C, Ty);
+}
+
+Constant *ConstantExpr::getFPTrunc(Constant *C, const Type *Ty) {
+ assert(C->getType()->isFloatingPoint() && Ty->isFloatingPoint() &&
+ C->getType()->getPrimitiveSizeInBits() > Ty->getPrimitiveSizeInBits()&&
+ "This is an illegal floating point truncation!");
+ return getFoldedCast(Instruction::FPTrunc, C, Ty);
+}
+
+Constant *ConstantExpr::getFPExtend(Constant *C, const Type *Ty) {
+ assert(C->getType()->isFloatingPoint() && Ty->isFloatingPoint() &&
+ C->getType()->getPrimitiveSizeInBits() < Ty->getPrimitiveSizeInBits()&&
+ "This is an illegal floating point extension!");
+ return getFoldedCast(Instruction::FPExt, C, Ty);
+}
+
+Constant *ConstantExpr::getUIToFP(Constant *C, const Type *Ty) {
+ assert(C->getType()->isInteger() && Ty->isFloatingPoint() &&
+ "This is an illegal i32 to floating point cast!");
+ return getFoldedCast(Instruction::UIToFP, C, Ty);
+}
+
+Constant *ConstantExpr::getSIToFP(Constant *C, const Type *Ty) {
+ assert(C->getType()->isInteger() && Ty->isFloatingPoint() &&
+ "This is an illegal sint to floating point cast!");
+ return getFoldedCast(Instruction::SIToFP, C, Ty);
+}
+
+Constant *ConstantExpr::getFPToUI(Constant *C, const Type *Ty) {
+ assert(C->getType()->isFloatingPoint() && Ty->isInteger() &&
+ "This is an illegal floating point to i32 cast!");
+ return getFoldedCast(Instruction::FPToUI, C, Ty);
+}
+
+Constant *ConstantExpr::getFPToSI(Constant *C, const Type *Ty) {
+ assert(C->getType()->isFloatingPoint() && Ty->isInteger() &&
+ "This is an illegal floating point to i32 cast!");
+ return getFoldedCast(Instruction::FPToSI, C, Ty);
+}
+
+Constant *ConstantExpr::getPtrToInt(Constant *C, const Type *DstTy) {
+ assert(isa<PointerType>(C->getType()) && "PtrToInt source must be pointer");
+ assert(DstTy->isInteger() && "PtrToInt destination must be integral");
+ return getFoldedCast(Instruction::PtrToInt, C, DstTy);
+}
+
+Constant *ConstantExpr::getIntToPtr(Constant *C, const Type *DstTy) {
+ assert(C->getType()->isInteger() && "IntToPtr source must be integral");
+ assert(isa<PointerType>(DstTy) && "IntToPtr destination must be a pointer");
+ return getFoldedCast(Instruction::IntToPtr, C, DstTy);
+}
+
+Constant *ConstantExpr::getBitCast(Constant *C, const Type *DstTy) {
+ // BitCast implies a no-op cast of type only. No bits change. However, you
+ // can't cast pointers to anything but pointers.
+ const Type *SrcTy = C->getType();
+ assert((isa<PointerType>(SrcTy) == isa<PointerType>(DstTy)) &&
+ "BitCast cannot cast pointer to non-pointer and vice versa");
+
+ // Now we know we're not dealing with mismatched pointer casts (ptr->nonptr
+ // or nonptr->ptr). For all the other types, the cast is okay if source and
+ // destination bit widths are identical.
+ unsigned SrcBitSize = SrcTy->getPrimitiveSizeInBits();
+ unsigned DstBitSize = DstTy->getPrimitiveSizeInBits();
+ assert(SrcBitSize == DstBitSize && "BitCast requies types of same width");
+ return getFoldedCast(Instruction::BitCast, C, DstTy);
+}
+
+Constant *ConstantExpr::getSizeOf(const Type *Ty) {
+ // sizeof is implemented as: (i64) gep (Ty*)null, 1
+ Constant *GEPIdx = ConstantInt::get(Type::Int32Ty, 1);
+ Constant *GEP =
+ getGetElementPtr(getNullValue(PointerType::get(Ty)), &GEPIdx, 1);
+ return getCast(Instruction::PtrToInt, GEP, Type::Int64Ty);
}
Constant *ConstantExpr::getTy(const Type *ReqTy, unsigned Opcode,
Constant *C1, Constant *C2) {
- if (Opcode == Instruction::Shl || Opcode == Instruction::Shr)
- return getShiftTy(ReqTy, Opcode, C1, C2);
// Check the operands for consistency first
- assert((Opcode >= Instruction::BinaryOpsBegin &&
- Opcode < Instruction::BinaryOpsEnd) &&
+ assert(Opcode >= Instruction::BinaryOpsBegin &&
+ Opcode < Instruction::BinaryOpsEnd &&
"Invalid opcode in binary constant expression");
assert(C1->getType() == C2->getType() &&
"Operand types in binary constant expression should match");
- if (ReqTy == C1->getType() || (Instruction::isComparison(Opcode) &&
- ReqTy == Type::BoolTy))
+ if (ReqTy == C1->getType() || ReqTy == Type::Int1Ty)
if (Constant *FC = ConstantFoldBinaryInstruction(Opcode, C1, C2))
return FC; // Fold a few common cases...
std::vector<Constant*> argVec(1, C1); argVec.push_back(C2);
- ExprMapKeyType Key = std::make_pair(Opcode, argVec);
- return ExprConstants.getOrCreate(ReqTy, Key);
+ ExprMapKeyType Key(Opcode, argVec);
+ return ExprConstants->getOrCreate(ReqTy, Key);
+}
+
+Constant *ConstantExpr::getCompareTy(unsigned short predicate,
+ Constant *C1, Constant *C2) {
+ switch (predicate) {
+ default: assert(0 && "Invalid CmpInst predicate");
+ case FCmpInst::FCMP_FALSE: case FCmpInst::FCMP_OEQ: case FCmpInst::FCMP_OGT:
+ case FCmpInst::FCMP_OGE: case FCmpInst::FCMP_OLT: case FCmpInst::FCMP_OLE:
+ case FCmpInst::FCMP_ONE: case FCmpInst::FCMP_ORD: case FCmpInst::FCMP_UNO:
+ case FCmpInst::FCMP_UEQ: case FCmpInst::FCMP_UGT: case FCmpInst::FCMP_UGE:
+ case FCmpInst::FCMP_ULT: case FCmpInst::FCMP_ULE: case FCmpInst::FCMP_UNE:
+ case FCmpInst::FCMP_TRUE:
+ return getFCmp(predicate, C1, C2);
+ case ICmpInst::ICMP_EQ: case ICmpInst::ICMP_NE: case ICmpInst::ICMP_UGT:
+ case ICmpInst::ICMP_UGE: case ICmpInst::ICMP_ULT: case ICmpInst::ICMP_ULE:
+ case ICmpInst::ICMP_SGT: case ICmpInst::ICMP_SGE: case ICmpInst::ICMP_SLT:
+ case ICmpInst::ICMP_SLE:
+ return getICmp(predicate, C1, C2);
+ }
}
Constant *ConstantExpr::get(unsigned Opcode, Constant *C1, Constant *C2) {
#ifndef NDEBUG
switch (Opcode) {
- case Instruction::Add: case Instruction::Sub:
- case Instruction::Mul: case Instruction::Div:
- case Instruction::Rem:
+ case Instruction::Add:
+ case Instruction::Sub:
+ case Instruction::Mul:
assert(C1->getType() == C2->getType() && "Op types should be identical!");
assert((C1->getType()->isInteger() || C1->getType()->isFloatingPoint() ||
- isa<PackedType>(C1->getType())) &&
+ isa<VectorType>(C1->getType())) &&
+ "Tried to create an arithmetic operation on a non-arithmetic type!");
+ break;
+ case Instruction::UDiv:
+ case Instruction::SDiv:
+ assert(C1->getType() == C2->getType() && "Op types should be identical!");
+ assert((C1->getType()->isInteger() || (isa<VectorType>(C1->getType()) &&
+ cast<VectorType>(C1->getType())->getElementType()->isInteger())) &&
+ "Tried to create an arithmetic operation on a non-arithmetic type!");
+ break;
+ case Instruction::FDiv:
+ assert(C1->getType() == C2->getType() && "Op types should be identical!");
+ assert((C1->getType()->isFloatingPoint() || (isa<VectorType>(C1->getType())
+ && cast<VectorType>(C1->getType())->getElementType()->isFloatingPoint()))
+ && "Tried to create an arithmetic operation on a non-arithmetic type!");
+ break;
+ case Instruction::URem:
+ case Instruction::SRem:
+ assert(C1->getType() == C2->getType() && "Op types should be identical!");
+ assert((C1->getType()->isInteger() || (isa<VectorType>(C1->getType()) &&
+ cast<VectorType>(C1->getType())->getElementType()->isInteger())) &&
"Tried to create an arithmetic operation on a non-arithmetic type!");
break;
+ case Instruction::FRem:
+ assert(C1->getType() == C2->getType() && "Op types should be identical!");
+ assert((C1->getType()->isFloatingPoint() || (isa<VectorType>(C1->getType())
+ && cast<VectorType>(C1->getType())->getElementType()->isFloatingPoint()))
+ && "Tried to create an arithmetic operation on a non-arithmetic type!");
+ break;
case Instruction::And:
case Instruction::Or:
case Instruction::Xor:
assert(C1->getType() == C2->getType() && "Op types should be identical!");
- assert((C1->getType()->isIntegral() || isa<PackedType>(C1->getType())) &&
+ assert((C1->getType()->isInteger() || isa<VectorType>(C1->getType())) &&
"Tried to create a logical operation on a non-integral type!");
break;
- case Instruction::SetLT: case Instruction::SetGT: case Instruction::SetLE:
- case Instruction::SetGE: case Instruction::SetEQ: case Instruction::SetNE:
- assert(C1->getType() == C2->getType() && "Op types should be identical!");
- break;
case Instruction::Shl:
- case Instruction::Shr:
- assert(C2->getType() == Type::UByteTy && "Shift should be by ubyte!");
- assert((C1->getType()->isInteger() || isa<PackedType>(C1->getType())) &&
+ case Instruction::LShr:
+ case Instruction::AShr:
+ assert(C1->getType() == C2->getType() && "Op types should be identical!");
+ assert(C1->getType()->isInteger() &&
"Tried to create a shift operation on a non-integer type!");
break;
default:
}
#endif
- if (Instruction::isComparison(Opcode))
- return getTy(Type::BoolTy, Opcode, C1, C2);
- else
- return getTy(C1->getType(), Opcode, C1, C2);
+ return getTy(C1->getType(), Opcode, C1, C2);
+}
+
+Constant *ConstantExpr::getCompare(unsigned short pred,
+ Constant *C1, Constant *C2) {
+ assert(C1->getType() == C2->getType() && "Op types should be identical!");
+ return getCompareTy(pred, C1, C2);
}
Constant *ConstantExpr::getSelectTy(const Type *ReqTy, Constant *C,
Constant *V1, Constant *V2) {
- assert(C->getType() == Type::BoolTy && "Select condition must be bool!");
+ assert(C->getType() == Type::Int1Ty && "Select condition must be i1!");
assert(V1->getType() == V2->getType() && "Select value types must match!");
assert(V1->getType()->isFirstClassType() && "Cannot select aggregate type!");
std::vector<Constant*> argVec(3, C);
argVec[1] = V1;
argVec[2] = V2;
- ExprMapKeyType Key = std::make_pair(Instruction::Select, argVec);
- return ExprConstants.getOrCreate(ReqTy, Key);
+ ExprMapKeyType Key(Instruction::Select, argVec);
+ return ExprConstants->getOrCreate(ReqTy, Key);
}
-/// getShiftTy - Return a shift left or shift right constant expr
-Constant *ConstantExpr::getShiftTy(const Type *ReqTy, unsigned Opcode,
- Constant *C1, Constant *C2) {
- // Check the operands for consistency first
- assert((Opcode == Instruction::Shl ||
- Opcode == Instruction::Shr) &&
- "Invalid opcode in binary constant expression");
- assert(C1->getType()->isIntegral() && C2->getType() == Type::UByteTy &&
- "Invalid operand types for Shift constant expr!");
-
- if (Constant *FC = ConstantFoldBinaryInstruction(Opcode, C1, C2))
- return FC; // Fold a few common cases...
-
- // Look up the constant in the table first to ensure uniqueness
- std::vector<Constant*> argVec(1, C1); argVec.push_back(C2);
- ExprMapKeyType Key = std::make_pair(Opcode, argVec);
- return ExprConstants.getOrCreate(ReqTy, Key);
-}
-
-
Constant *ConstantExpr::getGetElementPtrTy(const Type *ReqTy, Constant *C,
- const std::vector<Value*> &IdxList) {
- assert(GetElementPtrInst::getIndexedType(C->getType(), IdxList, true) &&
+ Value* const *Idxs,
+ unsigned NumIdx) {
+ assert(GetElementPtrInst::getIndexedType(C->getType(), Idxs, Idxs+NumIdx, true) &&
"GEP indices invalid!");
- if (Constant *FC = ConstantFoldGetElementPtr(C, IdxList))
+ if (Constant *FC = ConstantFoldGetElementPtr(C, (Constant**)Idxs, NumIdx))
return FC; // Fold a few common cases...
assert(isa<PointerType>(C->getType()) &&
"Non-pointer type for constant GetElementPtr expression");
// Look up the constant in the table first to ensure uniqueness
std::vector<Constant*> ArgVec;
- ArgVec.reserve(IdxList.size()+1);
+ ArgVec.reserve(NumIdx+1);
ArgVec.push_back(C);
- for (unsigned i = 0, e = IdxList.size(); i != e; ++i)
- ArgVec.push_back(cast<Constant>(IdxList[i]));
- const ExprMapKeyType &Key = std::make_pair(Instruction::GetElementPtr,ArgVec);
- return ExprConstants.getOrCreate(ReqTy, Key);
+ for (unsigned i = 0; i != NumIdx; ++i)
+ ArgVec.push_back(cast<Constant>(Idxs[i]));
+ const ExprMapKeyType Key(Instruction::GetElementPtr, ArgVec);
+ return ExprConstants->getOrCreate(ReqTy, Key);
}
-Constant *ConstantExpr::getGetElementPtr(Constant *C,
- const std::vector<Constant*> &IdxList){
+Constant *ConstantExpr::getGetElementPtr(Constant *C, Value* const *Idxs,
+ unsigned NumIdx) {
// Get the result type of the getelementptr!
- std::vector<Value*> VIdxList(IdxList.begin(), IdxList.end());
-
- const Type *Ty = GetElementPtrInst::getIndexedType(C->getType(), VIdxList,
- true);
+ const Type *Ty =
+ GetElementPtrInst::getIndexedType(C->getType(), Idxs, Idxs+NumIdx, true);
assert(Ty && "GEP indices invalid!");
- return getGetElementPtrTy(PointerType::get(Ty), C, VIdxList);
+ return getGetElementPtrTy(PointerType::get(Ty), C, Idxs, NumIdx);
}
-Constant *ConstantExpr::getGetElementPtr(Constant *C,
- const std::vector<Value*> &IdxList) {
- // Get the result type of the getelementptr!
- const Type *Ty = GetElementPtrInst::getIndexedType(C->getType(), IdxList,
- true);
- assert(Ty && "GEP indices invalid!");
- return getGetElementPtrTy(PointerType::get(Ty), C, IdxList);
+Constant *ConstantExpr::getGetElementPtr(Constant *C, Constant* const *Idxs,
+ unsigned NumIdx) {
+ return getGetElementPtr(C, (Value* const *)Idxs, NumIdx);
+}
+
+
+Constant *
+ConstantExpr::getICmp(unsigned short pred, Constant* LHS, Constant* RHS) {
+ assert(LHS->getType() == RHS->getType());
+ assert(pred >= ICmpInst::FIRST_ICMP_PREDICATE &&
+ pred <= ICmpInst::LAST_ICMP_PREDICATE && "Invalid ICmp Predicate");
+
+ if (Constant *FC = ConstantFoldCompareInstruction(pred, LHS, RHS))
+ return FC; // Fold a few common cases...
+
+ // Look up the constant in the table first to ensure uniqueness
+ std::vector<Constant*> ArgVec;
+ ArgVec.push_back(LHS);
+ ArgVec.push_back(RHS);
+ // Get the key type with both the opcode and predicate
+ const ExprMapKeyType Key(Instruction::ICmp, ArgVec, pred);
+ return ExprConstants->getOrCreate(Type::Int1Ty, Key);
+}
+
+Constant *
+ConstantExpr::getFCmp(unsigned short pred, Constant* LHS, Constant* RHS) {
+ assert(LHS->getType() == RHS->getType());
+ assert(pred <= FCmpInst::LAST_FCMP_PREDICATE && "Invalid FCmp Predicate");
+
+ if (Constant *FC = ConstantFoldCompareInstruction(pred, LHS, RHS))
+ return FC; // Fold a few common cases...
+
+ // Look up the constant in the table first to ensure uniqueness
+ std::vector<Constant*> ArgVec;
+ ArgVec.push_back(LHS);
+ ArgVec.push_back(RHS);
+ // Get the key type with both the opcode and predicate
+ const ExprMapKeyType Key(Instruction::FCmp, ArgVec, pred);
+ return ExprConstants->getOrCreate(Type::Int1Ty, Key);
}
Constant *ConstantExpr::getExtractElementTy(const Type *ReqTy, Constant *Val,
// Look up the constant in the table first to ensure uniqueness
std::vector<Constant*> ArgVec(1, Val);
ArgVec.push_back(Idx);
- const ExprMapKeyType &Key = std::make_pair(Instruction::ExtractElement,ArgVec);
- return ExprConstants.getOrCreate(ReqTy, Key);
+ const ExprMapKeyType Key(Instruction::ExtractElement,ArgVec);
+ return ExprConstants->getOrCreate(ReqTy, Key);
}
Constant *ConstantExpr::getExtractElement(Constant *Val, Constant *Idx) {
- assert(isa<PackedType>(Val->getType()) &&
- "Tried to create extractelement operation on non-packed type!");
- assert(Idx->getType() == Type::UIntTy &&
- "Extractelement index must be uint type!");
- return getExtractElementTy(cast<PackedType>(Val->getType())->getElementType(),
+ assert(isa<VectorType>(Val->getType()) &&
+ "Tried to create extractelement operation on non-vector type!");
+ assert(Idx->getType() == Type::Int32Ty &&
+ "Extractelement index must be i32 type!");
+ return getExtractElementTy(cast<VectorType>(Val->getType())->getElementType(),
Val, Idx);
}
std::vector<Constant*> ArgVec(1, Val);
ArgVec.push_back(Elt);
ArgVec.push_back(Idx);
- const ExprMapKeyType &Key = std::make_pair(Instruction::InsertElement,ArgVec);
- return ExprConstants.getOrCreate(ReqTy, Key);
+ const ExprMapKeyType Key(Instruction::InsertElement,ArgVec);
+ return ExprConstants->getOrCreate(ReqTy, Key);
}
Constant *ConstantExpr::getInsertElement(Constant *Val, Constant *Elt,
Constant *Idx) {
- assert(isa<PackedType>(Val->getType()) &&
- "Tried to create insertelement operation on non-packed type!");
- assert(Elt->getType() == cast<PackedType>(Val->getType())->getElementType()
+ assert(isa<VectorType>(Val->getType()) &&
+ "Tried to create insertelement operation on non-vector type!");
+ assert(Elt->getType() == cast<VectorType>(Val->getType())->getElementType()
&& "Insertelement types must match!");
- assert(Idx->getType() == Type::UIntTy &&
- "Insertelement index must be uint type!");
- return getInsertElementTy(cast<PackedType>(Val->getType())->getElementType(),
+ assert(Idx->getType() == Type::Int32Ty &&
+ "Insertelement index must be i32 type!");
+ return getInsertElementTy(cast<VectorType>(Val->getType())->getElementType(),
Val, Elt, Idx);
}
std::vector<Constant*> ArgVec(1, V1);
ArgVec.push_back(V2);
ArgVec.push_back(Mask);
- const ExprMapKeyType &Key = std::make_pair(Instruction::ShuffleVector,ArgVec);
- return ExprConstants.getOrCreate(ReqTy, Key);
+ const ExprMapKeyType Key(Instruction::ShuffleVector,ArgVec);
+ return ExprConstants->getOrCreate(ReqTy, Key);
}
Constant *ConstantExpr::getShuffleVector(Constant *V1, Constant *V2,
return getShuffleVectorTy(V1->getType(), V1, V2, Mask);
}
+Constant *ConstantExpr::getZeroValueForNegationExpr(const Type *Ty) {
+ if (const VectorType *PTy = dyn_cast<VectorType>(Ty))
+ if (PTy->getElementType()->isFloatingPoint()) {
+ std::vector<Constant*> zeros(PTy->getNumElements(),
+ ConstantFP::getNegativeZero(PTy->getElementType()));
+ return ConstantVector::get(PTy, zeros);
+ }
+
+ if (Ty->isFloatingPoint())
+ return ConstantFP::getNegativeZero(Ty);
+
+ return Constant::getNullValue(Ty);
+}
// destroyConstant - Remove the constant from the constant table...
//
void ConstantExpr::destroyConstant() {
- ExprConstants.remove(this);
+ ExprConstants->remove(this);
destroyConstantImpl();
}
//===----------------------------------------------------------------------===//
// replaceUsesOfWithOnConstant implementations
+/// replaceUsesOfWithOnConstant - Update this constant array to change uses of
+/// 'From' to be uses of 'To'. This must update the uniquing data structures
+/// etc.
+///
+/// Note that we intentionally replace all uses of From with To here. Consider
+/// a large array that uses 'From' 1000 times. By handling this case all here,
+/// ConstantArray::replaceUsesOfWithOnConstant is only invoked once, and that
+/// single invocation handles all 1000 uses. Handling them one at a time would
+/// work, but would be really slow because it would have to unique each updated
+/// array instance.
void ConstantArray::replaceUsesOfWithOnConstant(Value *From, Value *To,
Use *U) {
assert(isa<Constant>(To) && "Cannot make Constant refer to non-constant!");
Constant *ToC = cast<Constant>(To);
- unsigned OperandToUpdate = U-OperandList;
- assert(getOperand(OperandToUpdate) == From && "ReplaceAllUsesWith broken!");
-
std::pair<ArrayConstantsTy::MapKey, Constant*> Lookup;
Lookup.first.first = getType();
Lookup.second = this;
// Fill values with the modified operands of the constant array. Also,
// compute whether this turns into an all-zeros array.
bool isAllZeros = false;
+ unsigned NumUpdated = 0;
if (!ToC->isNullValue()) {
- for (Use *O = OperandList, *E = OperandList+getNumOperands(); O != E; ++O)
- Values.push_back(cast<Constant>(O->get()));
+ for (Use *O = OperandList, *E = OperandList+getNumOperands(); O != E; ++O) {
+ Constant *Val = cast<Constant>(O->get());
+ if (Val == From) {
+ Val = ToC;
+ ++NumUpdated;
+ }
+ Values.push_back(Val);
+ }
} else {
isAllZeros = true;
for (Use *O = OperandList, *E = OperandList+getNumOperands(); O != E; ++O) {
Constant *Val = cast<Constant>(O->get());
+ if (Val == From) {
+ Val = ToC;
+ ++NumUpdated;
+ }
Values.push_back(Val);
if (isAllZeros) isAllZeros = Val->isNullValue();
}
}
- Values[OperandToUpdate] = ToC;
Constant *Replacement = 0;
if (isAllZeros) {
// Check to see if we have this array type already.
bool Exists;
ArrayConstantsTy::MapTy::iterator I =
- ArrayConstants.InsertOrGetItem(Lookup, Exists);
+ ArrayConstants->InsertOrGetItem(Lookup, Exists);
if (Exists) {
Replacement = I->second;
// creating a new constant array, inserting it, replaceallusesof'ing the
// old with the new, then deleting the old... just update the current one
// in place!
- ArrayConstants.MoveConstantToNewSlot(this, I);
+ ArrayConstants->MoveConstantToNewSlot(this, I);
- // Update to the new value.
- setOperand(OperandToUpdate, ToC);
+ // Update to the new value. Optimize for the case when we have a single
+ // operand that we're changing, but handle bulk updates efficiently.
+ if (NumUpdated == 1) {
+ unsigned OperandToUpdate = U-OperandList;
+ assert(getOperand(OperandToUpdate) == From &&
+ "ReplaceAllUsesWith broken!");
+ setOperand(OperandToUpdate, ToC);
+ } else {
+ for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
+ if (getOperand(i) == From)
+ setOperand(i, ToC);
+ }
return;
}
}
// Check to see if we have this array type already.
bool Exists;
StructConstantsTy::MapTy::iterator I =
- StructConstants.InsertOrGetItem(Lookup, Exists);
+ StructConstants->InsertOrGetItem(Lookup, Exists);
if (Exists) {
Replacement = I->second;
// creating a new constant struct, inserting it, replaceallusesof'ing the
// old with the new, then deleting the old... just update the current one
// in place!
- StructConstants.MoveConstantToNewSlot(this, I);
+ StructConstants->MoveConstantToNewSlot(this, I);
// Update to the new value.
setOperand(OperandToUpdate, ToC);
destroyConstant();
}
-void ConstantPacked::replaceUsesOfWithOnConstant(Value *From, Value *To,
+void ConstantVector::replaceUsesOfWithOnConstant(Value *From, Value *To,
Use *U) {
assert(isa<Constant>(To) && "Cannot make Constant refer to non-constant!");
Values.push_back(Val);
}
- Constant *Replacement = ConstantPacked::get(getType(), Values);
+ Constant *Replacement = ConstantVector::get(getType(), Values);
assert(Replacement != this && "I didn't contain From!");
// Everyone using this now uses the replacement.
Constant *Replacement = 0;
if (getOpcode() == Instruction::GetElementPtr) {
- std::vector<Constant*> Indices;
+ SmallVector<Constant*, 8> Indices;
Constant *Pointer = getOperand(0);
Indices.reserve(getNumOperands()-1);
if (Pointer == From) Pointer = To;
if (Val == From) Val = To;
Indices.push_back(Val);
}
- Replacement = ConstantExpr::getGetElementPtr(Pointer, Indices);
- } else if (getOpcode() == Instruction::Cast) {
+ Replacement = ConstantExpr::getGetElementPtr(Pointer,
+ &Indices[0], Indices.size());
+ } else if (isCast()) {
assert(getOperand(0) == From && "Cast only has one use!");
- Replacement = ConstantExpr::getCast(To, getType());
+ Replacement = ConstantExpr::getCast(getOpcode(), To, getType());
} else if (getOpcode() == Instruction::Select) {
Constant *C1 = getOperand(0);
Constant *C2 = getOperand(1);
if (C2 == From) C2 = To;
if (C3 == From) C3 = To;
Replacement = ConstantExpr::getShuffleVector(C1, C2, C3);
+ } else if (isCompare()) {
+ Constant *C1 = getOperand(0);
+ Constant *C2 = getOperand(1);
+ if (C1 == From) C1 = To;
+ if (C2 == From) C2 = To;
+ if (getOpcode() == Instruction::ICmp)
+ Replacement = ConstantExpr::getICmp(getPredicate(), C1, C2);
+ else
+ Replacement = ConstantExpr::getFCmp(getPredicate(), C1, C2);
} else if (getNumOperands() == 2) {
Constant *C1 = getOperand(0);
Constant *C2 = getOperand(1);
}
-
-/// clearAllValueMaps - This method frees all internal memory used by the
-/// constant subsystem, which can be used in environments where this memory
-/// is otherwise reported as a leak.
-void Constant::clearAllValueMaps() {
- std::vector<Constant *> Constants;
-
- DoubleConstants.clear(Constants);
- FloatConstants.clear(Constants);
- SIntConstants.clear(Constants);
- UIntConstants.clear(Constants);
- AggZeroConstants.clear(Constants);
- ArrayConstants.clear(Constants);
- StructConstants.clear(Constants);
- PackedConstants.clear(Constants);
- NullPtrConstants.clear(Constants);
- UndefValueConstants.clear(Constants);
- ExprConstants.clear(Constants);
-
- for (std::vector<Constant *>::iterator I = Constants.begin(),
- E = Constants.end(); I != E; ++I)
- (*I)->dropAllReferences();
- for (std::vector<Constant *>::iterator I = Constants.begin(),
- E = Constants.end(); I != E; ++I)
- (*I)->destroyConstantImpl();
- Constants.clear();
-}
-
/// getStringValue - Turn an LLVM constant pointer that eventually points to a
/// global into a string value. Return an empty string if we can't do it.
/// Parameter Chop determines if the result is chopped at the first null
if (CE->getNumOperands() == 3 &&
cast<Constant>(CE->getOperand(1))->isNullValue() &&
isa<ConstantInt>(CE->getOperand(2))) {
- Offset += cast<ConstantInt>(CE->getOperand(2))->getRawValue();
+ Offset += cast<ConstantInt>(CE->getOperand(2))->getZExtValue();
return CE->getOperand(0)->getStringValue(Chop, Offset);
}
}
}
return "";
}
-
projects / oota-llvm.git / blobdiff