return IsDead;
}
void setIsKill() {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isRegister() && !IsDef && "Wrong MachineOperand accessor");
IsKill = true;
}
void setIsDead() {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isRegister() && IsDef && "Wrong MachineOperand accessor");
IsDead = true;
}
void unsetIsKill() {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isRegister() && !IsDef && "Wrong MachineOperand accessor");
IsKill = false;
}
void unsetIsDead() {
- assert(isRegister() && "Wrong MachineOperand accessor");
+ assert(isRegister() && IsDef && "Wrong MachineOperand accessor");
IsDead = false;
}
}
/// isIdenticalTo - Return true if this operand is identical to the specified
- /// operand.
+ /// operand. Note: This method ignores isKill and isDead properties.
bool isIdenticalTo(const MachineOperand &Other) const;
/// ChangeToImmediate - Replace this operand with a new immediate operand of
///
class MachineInstr {
short Opcode; // the opcode
+ short NumImplicitOps; // Number of implicit operands (which
+ // are determined at construction time).
+
std::vector<MachineOperand> Operands; // the operands
MachineInstr* prev, *next; // links for our intrusive list
MachineBasicBlock* parent; // pointer to the owning basic block
- unsigned NumImplicitOps; // Number of implicit operands (which
- // are determined at construction time).
-
// OperandComplete - Return true if it's illegal to add a new operand
bool OperandsComplete() const;
delete removeFromParent();
}
+ /// copyKillDeadInfo - Copies kill / dead operand properties from MI.
+ ///
+ void copyKillDeadInfo(const MachineInstr *MI) {
+ for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
+ const MachineOperand &MO = MI->getOperand(i);
+ if (MO.isReg() && (MO.isKill() || MO.isDead())) {
+ for (unsigned j = 0, ee = getNumOperands(); j != ee; ++j) {
+ MachineOperand &MOp = getOperand(j);
+ if (MOp.isIdenticalTo(MO)) {
+ if (MO.isKill())
+ MOp.setIsKill();
+ else
+ MOp.setIsDead();
+ break;
+ }
+ }
+ }
+ }
+ }
+
//
// Debugging support
//