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Print out the MBB live-in registers. 

llvm-svn: 136178
This commit is contained in:
Jakob Stoklund Olesen 2011-07-26 23:12:08 +00:00
parent 9688a17bff
commit b1459dbc25
1 changed files with 4 additions and 0 deletions
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4
llvm/lib/CodeGen/RegAllocBasic.cpp
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@ -439,6 +439,7 @@ void RegAllocBase::addMBBLiveIns(MachineFunction *MF) {
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;
@ -449,6 +450,8 @@ void RegAllocBase::addMBBLiveIns(MachineFunction *MF) {
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)
@ -456,6 +459,7 @@ void RegAllocBase::addMBBLiveIns(MachineFunction *MF) {
tie(Start, Stop) = Indexes->getMBBRange(MBB);
SI.advanceTo(Start);
}
DEBUG(dbgs() << '\n');
}
}