diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 6d097a68f83e24bbb3825c1ce5e2ab36bfbb9f2c..1d0ed3af453c4b43b2eff36a40487cca72b38cd5 100644 (file)
EntryMBB->insert(EntryMBB->begin(), MI);
else {
MachineInstr *Def = RegInfo->getVRegDef(Reg);
- MachineBasicBlock::iterator InsertPos = Def;
- // FIXME: VR def may not be in entry block.
- Def->getParent()->insert(llvm::next(InsertPos), MI);
+ if (Def) {
+ MachineBasicBlock::iterator InsertPos = Def;
+ // FIXME: VR def may not be in entry block.
+ Def->getParent()->insert(llvm::next(InsertPos), MI);
+ } else
+ DEBUG(dbgs() << "Dropping debug info for dead vreg"
+ << TargetRegisterInfo::virtReg2Index(Reg) << "\n");
}
// If Reg is live-in then update debug info to track its copy in a vreg.
}
}
- SDValue Res;
if (InputChains.size() == 1)
return InputChains[0];
return CurDAG->getNode(ISD::TokenFactor, SDLoc(ChainNodesMatched[0]),