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CodeGen: Use MachineInstr& in HoistSpillHelper, NFC

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Avoid another few implicit conversions from iterator to pointer.

llvm-svn: 274295
This commit is contained in:
Duncan P. N. Exon Smith 2016-06-30 23:28:15 +00:00
parent a7c67ff659
commit 99c4202c40
1 changed files with 15 additions and 14 deletions
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29
lib/CodeGen/InlineSpiller.cpp
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@ -120,9 +120,9 @@ public:
MBFI(pass.getAnalysis<MachineBlockFrequencyInfo>()),
IPA(LIS, mf.getNumBlockIDs()) {}
void addToMergeableSpills(MachineInstr *Spill, int StackSlot,
void addToMergeableSpills(MachineInstr &Spill, int StackSlot,
unsigned Original);
bool rmFromMergeableSpills(MachineInstr *Spill, int StackSlot);
bool rmFromMergeableSpills(MachineInstr &Spill, int StackSlot);
void hoistAllSpills();
void LRE_DidCloneVirtReg(unsigned, unsigned) override;
};
@ -394,7 +394,7 @@ bool InlineSpiller::hoistSpillInsideBB(LiveInterval &SpillLI,
LIS.InsertMachineInstrInMaps(*MII);
DEBUG(dbgs() << "\thoisted: " << SrcVNI->def << '\t' << *MII);
HSpiller.addToMergeableSpills(&(*MII), StackSlot, Original);
HSpiller.addToMergeableSpills(*MII, StackSlot, Original);
++NumSpills;
return true;
}
@ -453,7 +453,7 @@ void InlineSpiller::eliminateRedundantSpills(LiveInterval &SLI, VNInfo *VNI) {
MI.setDesc(TII.get(TargetOpcode::KILL));
DeadDefs.push_back(&MI);
++NumSpillsRemoved;
if (HSpiller.rmFromMergeableSpills(&MI, StackSlot))
if (HSpiller.rmFromMergeableSpills(MI, StackSlot))
--NumSpills;
}
}
@ -666,7 +666,7 @@ bool InlineSpiller::coalesceStackAccess(MachineInstr *MI, unsigned Reg) {
return false;
if (!IsLoad)
HSpiller.rmFromMergeableSpills(MI, StackSlot);
HSpiller.rmFromMergeableSpills(*MI, StackSlot);
DEBUG(dbgs() << "Coalescing stack access: " << *MI);
LIS.RemoveMachineInstrFromMaps(*MI);
@ -793,7 +793,8 @@ foldMemoryOperand(ArrayRef<std::pair<MachineInstr*, unsigned> > Ops,
}
int FI;
if (TII.isStoreToStackSlot(*MI, FI) && HSpiller.rmFromMergeableSpills(MI, FI))
if (TII.isStoreToStackSlot(*MI, FI) &&
HSpiller.rmFromMergeableSpills(*MI, FI))
--NumSpills;
LIS.ReplaceMachineInstrInMaps(*MI, *FoldMI);
MI->eraseFromParent();
@ -822,7 +823,7 @@ foldMemoryOperand(ArrayRef<std::pair<MachineInstr*, unsigned> > Ops,
++NumFolded;
else if (Ops.front().second == 0) {
++NumSpills;
HSpiller.addToMergeableSpills(FoldMI, StackSlot, Original);
HSpiller.addToMergeableSpills(*FoldMI, StackSlot, Original);
} else
++NumReloads;
return true;
@ -858,7 +859,7 @@ void InlineSpiller::insertSpill(unsigned NewVReg, bool isKill,
DEBUG(dumpMachineInstrRangeWithSlotIndex(std::next(MI), MIS.end(), LIS,
"spill"));
++NumSpills;
HSpiller.addToMergeableSpills(std::next(MI), StackSlot, Original);
HSpiller.addToMergeableSpills(*std::next(MI), StackSlot, Original);
}
/// spillAroundUses - insert spill code around each use of Reg.
@ -1050,27 +1051,27 @@ void InlineSpiller::postOptimization() { HSpiller.hoistAllSpills(); }
/// When a spill is inserted, add the spill to MergeableSpills map.
///
void HoistSpillHelper::addToMergeableSpills(MachineInstr *Spill, int StackSlot,
void HoistSpillHelper::addToMergeableSpills(MachineInstr &Spill, int StackSlot,
unsigned Original) {
StackSlotToReg[StackSlot] = Original;
SlotIndex Idx = LIS.getInstructionIndex(*Spill);
SlotIndex Idx = LIS.getInstructionIndex(Spill);
VNInfo *OrigVNI = LIS.getInterval(Original).getVNInfoAt(Idx.getRegSlot());
std::pair<int, VNInfo *> MIdx = std::make_pair(StackSlot, OrigVNI);
MergeableSpills[MIdx].insert(Spill);
MergeableSpills[MIdx].insert(&Spill);
}
/// When a spill is removed, remove the spill from MergeableSpills map.
/// Return true if the spill is removed successfully.
///
bool HoistSpillHelper::rmFromMergeableSpills(MachineInstr *Spill,
bool HoistSpillHelper::rmFromMergeableSpills(MachineInstr &Spill,
int StackSlot) {
int Original = StackSlotToReg[StackSlot];
if (!Original)
return false;
SlotIndex Idx = LIS.getInstructionIndex(*Spill);
SlotIndex Idx = LIS.getInstructionIndex(Spill);
VNInfo *OrigVNI = LIS.getInterval(Original).getVNInfoAt(Idx.getRegSlot());
std::pair<int, VNInfo *> MIdx = std::make_pair(StackSlot, OrigVNI);
return MergeableSpills[MIdx].erase(Spill);
return MergeableSpills[MIdx].erase(&Spill);
}
/// Check BB to see if it is a possible target BB to place a hoisted spill,