- Rename ConstantGenericIntegral -> ConstantIntegral
- Add new methods to ConstantIntegral: getMaxValue, getMinValue, getAllOnesValue llvm-svn: 3299
This commit is contained in:
Chris Lattner
parent
1f25c93ac0
commit
b1585a90d9
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@ -34,30 +34,6 @@ void Constant::setName(const std::string &Name, SymbolTable *ST) {
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if (Name.size()) ST->insert(Name, this);
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}
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// Static constructor to create a '0' constant of arbitrary type...
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Constant *Constant::getNullValue(const Type *Ty) {
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switch (Ty->getPrimitiveID()) {
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case Type::BoolTyID: return ConstantBool::get(false);
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case Type::SByteTyID:
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case Type::ShortTyID:
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case Type::IntTyID:
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case Type::LongTyID: return ConstantSInt::get(Ty, 0);
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case Type::UByteTyID:
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case Type::UShortTyID:
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case Type::UIntTyID:
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case Type::ULongTyID: return ConstantUInt::get(Ty, 0);
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case Type::FloatTyID:
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case Type::DoubleTyID: return ConstantFP::get(Ty, 0);
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case Type::PointerTyID:
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return ConstantPointerNull::get(cast<PointerType>(Ty));
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default:
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return 0;
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}
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}
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void Constant::destroyConstantImpl() {
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// When a Constant is destroyed, there may be lingering
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// references to the constant by other constants in the constant pool. These
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@ -86,6 +62,108 @@ void Constant::destroyConstantImpl() {
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delete this;
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}
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// Static constructor to create a '0' constant of arbitrary type...
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Constant *Constant::getNullValue(const Type *Ty) {
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switch (Ty->getPrimitiveID()) {
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case Type::BoolTyID: return ConstantBool::get(false);
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case Type::SByteTyID:
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case Type::ShortTyID:
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case Type::IntTyID:
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case Type::LongTyID: return ConstantSInt::get(Ty, 0);
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case Type::UByteTyID:
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case Type::UShortTyID:
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case Type::UIntTyID:
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case Type::ULongTyID: return ConstantUInt::get(Ty, 0);
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case Type::FloatTyID:
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case Type::DoubleTyID: return ConstantFP::get(Ty, 0);
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case Type::PointerTyID:
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return ConstantPointerNull::get(cast<PointerType>(Ty));
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default:
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return 0;
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}
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}
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// Static constructor to create the maximum constant of an integral type...
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ConstantIntegral *ConstantIntegral::getMaxValue(const Type *Ty) {
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switch (Ty->getPrimitiveID()) {
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case Type::BoolTyID: return ConstantBool::True;
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case Type::SByteTyID:
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case Type::ShortTyID:
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case Type::IntTyID:
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case Type::LongTyID: {
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// Calculate 011111111111111...
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unsigned TypeBits = Ty->getPrimitiveSize()*8;
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int64_t Val = INT64_MAX; // All ones
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Val >>= 64-TypeBits; // Shift out unwanted 1 bits...
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return ConstantSInt::get(Ty, Val);
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}
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case Type::UByteTyID:
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case Type::UShortTyID:
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case Type::UIntTyID:
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case Type::ULongTyID: return getAllOnesValue(Ty);
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default:
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assert(0 && "Non-integral type specified!");
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return 0;
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}
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}
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// Static constructor to create the minimum constant for an integral type...
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ConstantIntegral *ConstantIntegral::getMinValue(const Type *Ty) {
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switch (Ty->getPrimitiveID()) {
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case Type::BoolTyID: return ConstantBool::False;
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case Type::SByteTyID:
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case Type::ShortTyID:
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case Type::IntTyID:
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case Type::LongTyID: {
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// Calculate 1111111111000000000000
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unsigned TypeBits = Ty->getPrimitiveSize()*8;
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int64_t Val = -1; // All ones
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Val <<= TypeBits-1; // Shift over to the right spot
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return ConstantSInt::get(Ty, Val);
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}
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case Type::UByteTyID:
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case Type::UShortTyID:
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case Type::UIntTyID:
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case Type::ULongTyID: return ConstantUInt::get(Ty, 0);
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default:
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assert(0 && "Non-integral type specified!");
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return 0;
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}
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}
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// Static constructor to create an integral constant with all bits set
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ConstantIntegral *ConstantIntegral::getAllOnesValue(const Type *Ty) {
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switch (Ty->getPrimitiveID()) {
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case Type::BoolTyID: return ConstantBool::True;
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case Type::SByteTyID:
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case Type::ShortTyID:
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case Type::IntTyID:
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case Type::LongTyID: return ConstantSInt::get(Ty, -1);
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case Type::UByteTyID:
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case Type::UShortTyID:
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case Type::UIntTyID:
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case Type::ULongTyID: {
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// Calculate ~0 of the right type...
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unsigned TypeBits = Ty->getPrimitiveSize()*8;
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uint64_t Val = ~0ULL; // All ones
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Val >>= 64-TypeBits; // Shift out unwanted 1 bits...
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return ConstantUInt::get(Ty, Val);
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}
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default:
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assert(0 && "Non-integral type specified!");
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return 0;
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}
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}
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//===----------------------------------------------------------------------===//
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// ConstantXXX Classes
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//===----------------------------------------------------------------------===//
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@ -93,12 +171,11 @@ void Constant::destroyConstantImpl() {
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//===----------------------------------------------------------------------===//
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// Normal Constructors
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ConstantBool::ConstantBool(bool V) : ConstantGenericIntegral(Type::BoolTy) {
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ConstantBool::ConstantBool(bool V) : ConstantIntegral(Type::BoolTy) {
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Val = V;
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}
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ConstantInt::ConstantInt(const Type *Ty, uint64_t V)
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: ConstantGenericIntegral(Ty) {
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ConstantInt::ConstantInt(const Type *Ty, uint64_t V) : ConstantIntegral(Ty) {
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Val.Unsigned = V;
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}
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@ -164,7 +241,7 @@ ConstantExpr::ConstantExpr(Constant *C, const std::vector<Constant*> &IdxList,
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//===----------------------------------------------------------------------===//
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// classof implementations
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bool ConstantGenericIntegral::classof(const Constant *CPV) {
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bool ConstantIntegral::classof(const Constant *CPV) {
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return (CPV->getType()->isIntegral() || CPV->getType() == Type::BoolTy) &&
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!isa<ConstantExpr>(CPV);
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}
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