private:
union {
- Value* value; // BasicBlockVal for a label operand.
- // ConstantVal for a non-address immediate.
- // Virtual register for an SSA operand,
- // including hidden operands required for
- // the generated machine code.
- // LLVM global for MO_GlobalAddress.
-
+ GlobalValue *GV; // LLVM global for MO_GlobalAddress.
int64_t immedVal; // Constant value for an explicit constant
-
MachineBasicBlock *MBB; // For MO_MachineBasicBlock type
const char *SymbolName; // For MO_ExternalSymbol type
} contents;
char flags; // see bit field definitions above
MachineOperandType opType:8; // Pack into 8 bits efficiently after flags.
union {
- int regNum; // register number for an explicit register
- // will be set for a value after reg allocation
-
- int offset; // Offset to address of global or external, only
- // valid for MO_GlobalAddress, MO_ExternalSym
- // and MO_ConstantPoolIndex
+ int regNum; // register number for an explicit register
+ int offset; // Offset to address of global or external, only
+ // valid for MO_GlobalAddress, MO_ExternalSym
+ // and MO_ConstantPoolIndex
} extra;
- void zeroContents () {
- memset (&contents, 0, sizeof (contents));
- memset (&extra, 0, sizeof (extra));
+ void zeroContents() {
+ contents.immedVal = 0;
+ extra.offset = 0;
}
MachineOperand(int64_t ImmVal, MachineOperandType OpTy, int Offset = 0)
: flags(0), opType(OpTy) {
- zeroContents ();
contents.immedVal = ImmVal;
extra.offset = Offset;
}
MachineOperand(int Reg, MachineOperandType OpTy, UseType UseTy)
: flags(UseTy), opType(OpTy) {
- zeroContents ();
+ zeroContents();
extra.regNum = Reg;
}
MachineOperand(GlobalValue *V, int Offset = 0)
: flags(MachineOperand::Use), opType(MachineOperand::MO_GlobalAddress) {
- zeroContents ();
- contents.value = (Value*)V;
+ contents.GV = V;
extra.offset = Offset;
}
}
GlobalValue *getGlobal() const {
assert(isGlobalAddress() && "Wrong MachineOperand accessor");
- return (GlobalValue*)contents.value;
+ return contents.GV;
}
int getOffset() const {
assert((isGlobalAddress() || isExternalSymbol() || isConstantPoolIndex()) &&
// Access to set the operands when building the machine instruction
//
- void SetMachineOperandVal(unsigned i,
- MachineOperand::MachineOperandType operandType,
- Value* V);
-
void SetMachineOperandConst(unsigned i,
MachineOperand::MachineOperandType operandType,
int intValue);