/// The schedule. Null SUnit*'s represent noop instructions.
std::vector<SUnit*> Sequence;
+ /// The index in BB of RegionEnd.
+ ///
+ /// This is the instruction number from the top of the current block, not
+ /// the SlotIndex. It is only used by the AntiDepBreaker.
+ unsigned EndIndex;
+
public:
SchedulePostRATDList(
MachineFunction &MF, MachineLoopInfo &MLI, MachineDominatorTree &MDT,
///
void startBlock(MachineBasicBlock *BB);
+ // Set the index of RegionEnd within the current BB.
+ void setEndIndex(unsigned EndIdx) { EndIndex = EndIdx; }
+
/// Initialize the scheduler state for the next scheduling region.
virtual void enterRegion(MachineBasicBlock *bb,
MachineBasicBlock::iterator begin,
MachineBasicBlock::iterator end,
- unsigned endcount);
+ unsigned regioninstrs);
/// Notify that the scheduler has finished scheduling the current region.
virtual void exitRegion();
TargetSubtargetInfo::AntiDepBreakMode AntiDepMode,
SmallVectorImpl<const TargetRegisterClass*> &CriticalPathRCs)
: ScheduleDAGInstrs(MF, MLI, MDT, /*IsPostRA=*/true), AA(AA),
- LiveRegs(TRI->getNumRegs())
+ LiveRegs(TRI->getNumRegs()), EndIndex(0)
{
const TargetMachine &TM = MF.getTarget();
const InstrItineraryData *InstrItins = TM.getInstrItineraryData();
void SchedulePostRATDList::enterRegion(MachineBasicBlock *bb,
MachineBasicBlock::iterator begin,
MachineBasicBlock::iterator end,
- unsigned endcount) {
- ScheduleDAGInstrs::enterRegion(bb, begin, end, endcount);
+ unsigned regioninstrs) {
+ ScheduleDAGInstrs::enterRegion(bb, begin, end, regioninstrs);
Sequence.clear();
}
unsigned Count = MBB->size(), CurrentCount = Count;
for (MachineBasicBlock::iterator I = Current; I != MBB->begin(); ) {
MachineInstr *MI = llvm::prior(I);
+ --Count;
// Calls are not scheduling boundaries before register allocation, but
// post-ra we don't gain anything by scheduling across calls since we
// don't need to worry about register pressure.
if (MI->isCall() || TII->isSchedulingBoundary(MI, MBB, Fn)) {
- Scheduler.enterRegion(MBB, I, Current, CurrentCount);
+ Scheduler.enterRegion(MBB, I, Current, CurrentCount - Count);
+ Scheduler.setEndIndex(CurrentCount);
Scheduler.schedule();
Scheduler.exitRegion();
Scheduler.EmitSchedule();
Current = MI;
- CurrentCount = Count - 1;
+ CurrentCount = Count;
Scheduler.Observe(MI, CurrentCount);
}
I = MI;
- --Count;
if (MI->isBundle())
Count -= MI->getBundleSize();
}
assert((MBB->begin() == Current || CurrentCount != 0) &&
"Instruction count mismatch!");
Scheduler.enterRegion(MBB, MBB->begin(), Current, CurrentCount);
+ Scheduler.setEndIndex(CurrentCount);
Scheduler.schedule();
Scheduler.exitRegion();
Scheduler.EmitSchedule();
for (MachineBasicBlock::livein_iterator I = (*SI)->livein_begin(),
E = (*SI)->livein_end(); I != E; ++I) {
unsigned Reg = *I;
- LiveRegs.set(Reg);
- // Repeat, for all subregs.
- for (MCSubRegIterator SubRegs(Reg, TRI); SubRegs.isValid(); ++SubRegs)
+ // Repeat, for reg and all subregs.
+ for (MCSubRegIterator SubRegs(Reg, TRI, /*IncludeSelf=*/true);
+ SubRegs.isValid(); ++SubRegs)
LiveRegs.set(*SubRegs);
}
}
// Ignore two-addr defs.
if (MI->isRegTiedToUseOperand(i)) continue;
- LiveRegs.reset(Reg);
-
- // Repeat for all subregs.
- for (MCSubRegIterator SubRegs(Reg, TRI); SubRegs.isValid(); ++SubRegs)
+ // Repeat for reg and all subregs.
+ for (MCSubRegIterator SubRegs(Reg, TRI, /*IncludeSelf=*/true);
+ SubRegs.isValid(); ++SubRegs)
LiveRegs.reset(*SubRegs);
}
unsigned Reg = MO.getReg();
if ((Reg == 0) || MRI.isReserved(Reg)) continue;
- LiveRegs.set(Reg);
-
- for (MCSubRegIterator SubRegs(Reg, TRI); SubRegs.isValid(); ++SubRegs)
+ for (MCSubRegIterator SubRegs(Reg, TRI, /*IncludeSelf=*/true);
+ SubRegs.isValid(); ++SubRegs)
LiveRegs.set(*SubRegs);
}
}