//
// 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 UnaryInstruction : public Instruction {
+ void *operator new(size_t, unsigned); // Do not implement
Use Op;
// avoiding warning: 'this' : used in base member initializer list
: 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();
//===----------------------------------------------------------------------===//
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, 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 {
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
/// 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.