//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
///
class TerminatorInst : public Instruction {
protected:
- TerminatorInst(Instruction::TermOps iType, Use *Ops, unsigned NumOps,
- Instruction *InsertBefore = 0);
TerminatorInst(const Type *Ty, Instruction::TermOps iType,
- Use *Ops, unsigned NumOps,
- const std::string &Name = "", Instruction *InsertBefore = 0)
- : Instruction(Ty, iType, Ops, NumOps, Name, InsertBefore) {}
+ Use *Ops, unsigned NumOps,
+ Instruction *InsertBefore = 0)
+ : Instruction(Ty, iType, Ops, NumOps, InsertBefore) {}
- TerminatorInst(Instruction::TermOps iType, Use *Ops, unsigned NumOps,
- BasicBlock *InsertAtEnd);
TerminatorInst(const Type *Ty, Instruction::TermOps iType,
- Use *Ops, unsigned NumOps,
- const std::string &Name, BasicBlock *InsertAtEnd)
- : Instruction(Ty, iType, Ops, NumOps, Name, InsertAtEnd) {}
+ Use *Ops, unsigned NumOps, BasicBlock *InsertAtEnd)
+ : Instruction(Ty, iType, Ops, NumOps, InsertAtEnd) {}
// Out of line virtual method, so the vtable, etc has a home.
~TerminatorInst();
//===----------------------------------------------------------------------===//
class UnaryInstruction : public Instruction {
+ void *operator new(size_t, unsigned); // Do not implement
Use Op;
+
+ // avoiding warning: 'this' : used in base member initializer list
+ UnaryInstruction* this_() { return this; }
protected:
- UnaryInstruction(const Type *Ty, unsigned iType, Value *V,
- const std::string &Name = "", Instruction *IB = 0)
- : Instruction(Ty, iType, &Op, 1, Name, IB), Op(V, this) {
+ UnaryInstruction(const Type *Ty, unsigned iType, Value *V, Instruction *IB =0)
+ : Instruction(Ty, iType, &Op, 1, IB), Op(V, this_()) {
}
- UnaryInstruction(const Type *Ty, unsigned iType, Value *V,
- const std::string &Name, BasicBlock *IAE)
- : Instruction(Ty, iType, &Op, 1, Name, IAE), Op(V, this) {
+ UnaryInstruction(const Type *Ty, unsigned iType, Value *V, BasicBlock *IAE)
+ : Instruction(Ty, iType, &Op, 1, IAE), Op(V, this_()) {
}
public:
+ // allocate space for exactly one operand
+ void *operator new(size_t s) {
+ return User::operator new(s, 1);
+ }
+
// Out of line virtual method, so the vtable, etc has a home.
~UnaryInstruction();
Op = Val;
}
unsigned getNumOperands() const { return 1; }
+
+ // Methods for support type inquiry through isa, cast, and dyn_cast:
+ static inline bool classof(const UnaryInstruction *) { return true; }
+ static inline bool classof(const Instruction *I) {
+ return I->getOpcode() == Instruction::Malloc ||
+ I->getOpcode() == Instruction::Alloca ||
+ I->getOpcode() == Instruction::Free ||
+ I->getOpcode() == Instruction::Load ||
+ I->getOpcode() == Instruction::VAArg ||
+ (I->getOpcode() >= CastOpsBegin && I->getOpcode() < CastOpsEnd);
+ }
+ static inline bool classof(const Value *V) {
+ return isa<Instruction>(V) && classof(cast<Instruction>(V));
+ }
};
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
class BinaryOperator : public Instruction {
+ void *operator new(size_t, unsigned); // Do not implement
Use Ops[2];
protected:
void init(BinaryOps iType);
BinaryOperator(BinaryOps iType, Value *S1, Value *S2, const Type *Ty,
- const std::string &Name, Instruction *InsertBefore)
- : Instruction(Ty, iType, Ops, 2, Name, InsertBefore) {
- Ops[0].init(S1, this);
- Ops[1].init(S2, this);
- init(iType);
- }
+ const std::string &Name, Instruction *InsertBefore);
BinaryOperator(BinaryOps iType, Value *S1, Value *S2, const Type *Ty,
- const std::string &Name, BasicBlock *InsertAtEnd)
- : Instruction(Ty, iType, Ops, 2, Name, InsertAtEnd) {
- Ops[0].init(S1, this);
- Ops[1].init(S2, this);
- init(iType);
- }
-
+ const std::string &Name, BasicBlock *InsertAtEnd);
public:
+ // allocate space for exactly two operands
+ void *operator new(size_t s) {
+ return User::operator new(s, 2);
+ }
/// Transparently provide more efficient getOperand methods.
Value *getOperand(unsigned i) const {
protected:
/// @brief Constructor with insert-before-instruction semantics for subclasses
CastInst(const Type *Ty, unsigned iType, Value *S,
- const std::string &Name = "", Instruction *InsertBefore = 0)
- : UnaryInstruction(Ty, iType, S, Name, InsertBefore) {
+ const std::string &Name = "", Instruction *InsertBefore = 0)
+ : UnaryInstruction(Ty, iType, S, InsertBefore) {
+ setName(Name);
}
/// @brief Constructor with insert-at-end-of-block semantics for subclasses
CastInst(const Type *Ty, unsigned iType, Value *S,
- const std::string &Name, BasicBlock *InsertAtEnd)
- : UnaryInstruction(Ty, iType, S, Name, InsertAtEnd) {
+ const std::string &Name, BasicBlock *InsertAtEnd)
+ : UnaryInstruction(Ty, iType, S, InsertAtEnd) {
+ setName(Name);
}
public:
/// Provides a way to construct any of the CastInst subclasses using an
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
+ /// @brief Check whether it is valid to call getCastOpcode for these types.
+ static bool isCastable(
+ const Type *SrcTy, ///< The Type from which the value should be cast.
+ const Type *DestTy ///< The Type to which the value should be cast.
+ );
+
/// Returns the opcode necessary to cast Val into Ty using usual casting
- /// rules.
+ /// rules.
/// @brief Infer the opcode for cast operand and type
static Instruction::CastOps getCastOpcode(
const Value *Val, ///< The value to cast
/// A lossless cast is one that does not alter the basic value. It implies
/// a no-op cast but is more stringent, preventing things like int->float,
- /// long->double, int->ptr, or packed->anything.
+ /// long->double, int->ptr, or vector->anything.
/// @returns true iff the cast is lossless.
/// @brief Determine if this is a lossless cast.
bool isLosslessCast() const;
/// This class is the base class for the comparison instructions.
/// @brief Abstract base class of comparison instructions.
class CmpInst: public Instruction {
+ void *operator new(size_t, unsigned); // DO NOT IMPLEMENT
CmpInst(); // do not implement
protected:
CmpInst(Instruction::OtherOps op, unsigned short pred, Value *LHS, Value *RHS,
Use Ops[2]; // CmpInst instructions always have 2 operands, optimize
public:
+ // allocate space for exactly two operands
+ void *operator new(size_t s) {
+ return User::operator new(s, 2);
+ }
/// Construct a compare instruction, given the opcode, the predicate and
/// the two operands. Optionally (if InstBefore is specified) insert the
/// instruction into a BasicBlock right before the specified instruction.
Value *S2, const std::string &Name,
BasicBlock *InsertAtEnd);
- /// @brief Implement superclass method.
- virtual CmpInst *clone() const;
-
/// @brief Get the opcode casted to the right type
OtherOps getOpcode() const {
return static_cast<OtherOps>(Instruction::getOpcode());
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