Displaying 1 result from an estimated 1 matches for "domaingeneral".
2015 Jan 08
4
[LLVMdev] Machine LICM and cheap instructions?
...RMBaseInstrInfo::
hasLowDefLatency(const InstrItineraryData *ItinData,
const MachineInstr *DefMI, unsigned DefIdx) const {
if (!ItinData || ItinData->isEmpty())
return false;
unsigned DDomain = DefMI->getDesc().TSFlags & ARMII::DomainMask;
if (DDomain == ARMII::DomainGeneral) {
unsigned DefClass = DefMI->getDesc().getSchedClass();
int DefCycle = ItinData->getOperandCycle(DefClass, DefIdx);
return (DefCycle != -1 && DefCycle <= 2);
}
return false;
}
So it won't hoist instructions that have defined operands ready in at most two cycle...