virtual void print(raw_ostream &O, const Module* = 0) const;
static char ID; // Class identification, replacement for typeinfo
+
+protected:
+ ScheduleDAGInstrs *createMachineScheduler();
};
} // namespace
&*nextIfDebug(MachineBasicBlock::const_iterator(I), End)));
}
+/// Instantiate a ScheduleDAGInstrs that will be owned by the caller.
+ScheduleDAGInstrs *MachineScheduler::createMachineScheduler() {
+ // Select the scheduler, or set the default.
+ MachineSchedRegistry::ScheduleDAGCtor Ctor = MachineSchedOpt;
+ if (Ctor != useDefaultMachineSched)
+ return Ctor(this);
+
+ // Get the default scheduler set by the target for this function.
+ ScheduleDAGInstrs *Scheduler = PassConfig->createMachineScheduler(this);
+ if (Scheduler)
+ return Scheduler;
+
+ // Default to GenericScheduler.
+ return createGenericSched(this);
+}
+
/// Top-level MachineScheduler pass driver.
///
/// Visit blocks in function order. Divide each block into scheduling regions
}
RegClassInfo->runOnMachineFunction(*MF);
- // Select the scheduler, or set the default.
- MachineSchedRegistry::ScheduleDAGCtor Ctor = MachineSchedOpt;
- if (Ctor == useDefaultMachineSched) {
- // Get the default scheduler set by the target.
- Ctor = MachineSchedRegistry::getDefault();
- if (!Ctor) {
- Ctor = createGenericSched;
- MachineSchedRegistry::setDefault(Ctor);
- }
- }
- // Instantiate the selected scheduler.
- OwningPtr<ScheduleDAGInstrs> Scheduler(Ctor(this));
+ // Instantiate the selected scheduler for this target, function, and
+ // optimization level.
+ OwningPtr<ScheduleDAGInstrs> Scheduler(createMachineScheduler());
// Visit all machine basic blocks.
//
if (I == BB->end())
VNI = LI.getVNInfoBefore(LIS->getMBBEndIdx(BB));
else {
- LiveRangeQuery LRQ(LI, LIS->getInstructionIndex(I));
+ LiveQueryResult LRQ = LI.Query(LIS->getInstructionIndex(I));
VNI = LRQ.valueIn();
}
// RegisterPressureTracker guarantees that readsReg is true for LiveUses.
// If this use comes before the reaching def, it cannot be a last use, so
// descrease its pressure change.
if (!SU->isScheduled && SU != &ExitSU) {
- LiveRangeQuery LRQ(LI, LIS->getInstructionIndex(SU->getInstr()));
+ LiveQueryResult LRQ
+ = LI.Query(LIS->getInstructionIndex(SU->getInstr()));
if (LRQ.valueIn() == VNI)
getPressureDiff(SU).addPressureChange(Reg, true, &MRI);
}
continue;
// Only consider uses of the phi.
- LiveRangeQuery LRQ(LI, LIS->getInstructionIndex(UI->SU->getInstr()));
+ LiveQueryResult LRQ =
+ LI.Query(LIS->getInstructionIndex(UI->SU->getInstr()));
if (!LRQ.valueIn()->isPHIDef())
continue;