diff options
Diffstat (limited to 'lib/CodeGen/RegAllocBase.cpp')
-rw-r--r-- | lib/CodeGen/RegAllocBase.cpp | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/lib/CodeGen/RegAllocBase.cpp b/lib/CodeGen/RegAllocBase.cpp index 3349b4448c..c542504722 100644 --- a/lib/CodeGen/RegAllocBase.cpp +++ b/lib/CodeGen/RegAllocBase.cpp @@ -225,41 +225,3 @@ unsigned RegAllocBase::checkPhysRegInterference(LiveInterval &VirtReg, return *AI; return 0; } - -// Add newly allocated physical registers to the MBB live in sets. -void RegAllocBase::addMBBLiveIns(MachineFunction *MF) { - NamedRegionTimer T("MBB Live Ins", TimerGroupName, TimePassesIsEnabled); - SlotIndexes *Indexes = LIS->getSlotIndexes(); - if (MF->size() <= 1) - return; - - LiveIntervalUnion::SegmentIter SI; - for (unsigned PhysReg = 0, NumRegs = TRI->getNumRegs(); PhysReg != NumRegs; - ++PhysReg) { - LiveIntervalUnion &LiveUnion = PhysReg2LiveUnion[PhysReg]; - if (LiveUnion.empty()) - continue; - DEBUG(dbgs() << PrintReg(PhysReg, TRI) << " live-in:"); - MachineFunction::iterator MBB = llvm::next(MF->begin()); - MachineFunction::iterator MFE = MF->end(); - SlotIndex Start, Stop; - tie(Start, Stop) = Indexes->getMBBRange(MBB); - SI.setMap(LiveUnion.getMap()); - SI.find(Start); - while (SI.valid()) { - if (SI.start() <= Start) { - if (!MBB->isLiveIn(PhysReg)) - MBB->addLiveIn(PhysReg); - DEBUG(dbgs() << "\tBB#" << MBB->getNumber() << ':' - << PrintReg(SI.value()->reg, TRI)); - } else if (SI.start() > Stop) - MBB = Indexes->getMBBFromIndex(SI.start().getPrevIndex()); - if (++MBB == MFE) - break; - tie(Start, Stop) = Indexes->getMBBRange(MBB); - SI.advanceTo(Start); - } - DEBUG(dbgs() << '\n'); - } -} - |