static const char LOFLAG64 = 0x20; // operand is %lo64(value_or_immedVal)
private:
- MachineOperandType opType;
-
union {
Value* value; // BasicBlockVal for a label operand.
// ConstantVal for a non-address immediate.
int64_t immedVal; // constant value for an explicit constant
};
+ MachineOperandType opType:8; // Pack into 8 bits efficiently after flags.
+ char flags; // see bit field definitions above
int regNum; // register number for an explicit register
// will be set for a value after reg allocation
- char flags; // see bit field definitions above
-
public:
/*ctor*/ MachineOperand ();
/*ctor*/ MachineOperand (MachineOperandType operandType,
inline
MachineOperand::MachineOperand()
- : opType(MO_VirtualRegister),
- immedVal(0),
- regNum(-1),
- flags(0)
+ : immedVal(0), opType(MO_VirtualRegister), flags(0), regNum(-1)
{}
inline
MachineOperand::MachineOperand(MachineOperandType operandType,
Value* _val)
- : opType(operandType),
- immedVal(0),
- regNum(-1),
- flags(0)
+ : immedVal(0), opType(operandType), flags(0), regNum(-1)
{}
inline
MachineOperand::MachineOperand(const MachineOperand& mo)
- : opType(mo.opType),
- flags(mo.flags)
+ : opType(mo.opType), flags(mo.flags)
{
switch(opType) {
case MO_VirtualRegister:
// a CALL (if any), and return value of a RETURN.
//---------------------------------------------------------------------------
-class MachineInstr : public Annotable, // Values are annotable
+class MachineInstr : public Annotable, // MachineInstrs are annotable
public NonCopyable { // Disable copy operations
MachineOpCode opCode; // the opcode
OpCodeMask opCodeMask; // extra bits for variants of an opcode