return &MO;
}
}
- return NULL;
}
bool StrongPHIElimination::runOnMachineFunction(MachineFunction &MF) {
LastUse->setIsKill(true);
}
- LI->renumber();
-
Allocator.Reset();
RegNodeMap.clear();
PHISrcDefs.clear();
}
void StrongPHIElimination::addReg(unsigned Reg) {
- if (RegNodeMap.count(Reg))
- return;
- RegNodeMap[Reg] = new (Allocator) Node(Reg);
+ Node *&N = RegNodeMap[Reg];
+ if (!N)
+ N = new (Allocator) Node(Reg);
}
StrongPHIElimination::Node*
LiveInterval &SrcInterval = LI->getInterval(SrcReg);
SlotIndex PredIndex = LI->getMBBEndIdx(PredBB);
VNInfo *SrcVNI = SrcInterval.getVNInfoBefore(PredIndex);
+ (void)SrcVNI;
assert(SrcVNI);
- SrcVNI->setHasPHIKill(true);
continue;
}
assert(getRegColor(CopyReg) == CopyReg);
}
- if (!InsertedSrcCopyMap.count(std::make_pair(PredBB, PHIColor)))
- InsertedSrcCopyMap[std::make_pair(PredBB, PHIColor)] = CopyInstr;
+ // Insert into map if not already there.
+ InsertedSrcCopyMap.insert(std::make_pair(std::make_pair(PredBB, PHIColor),
+ CopyInstr));
}
SrcMO.setReg(CopyReg);
SlotIndex PHIIndex = LI->getInstructionIndex(PHI);
VNInfo *DestVNI = DestLI.getVNInfoAt(PHIIndex.getRegSlot());
assert(DestVNI);
- DestVNI->setIsPHIDef(true);
// Prior to PHI elimination, the live ranges of PHIs begin at their defining
// instruction. After PHI elimination, PHI instructions are replaced by VNs
SlotIndex MBBStartIndex = LI->getMBBStartIdx(MBB);
SlotIndex DestCopyIndex = LI->getInstructionIndex(CopyInstr);
VNInfo *CopyVNI = CopyLI.getNextValue(MBBStartIndex,
- CopyInstr,
LI->getVNInfoAllocator());
- CopyVNI->setIsPHIDef(true);
CopyLI.addRange(LiveRange(MBBStartIndex,
DestCopyIndex.getRegSlot(),
CopyVNI));