diff options
| -rw-r--r-- | lib/CodeGen/LiveIntervalAnalysis.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp index 26d741f689..50f1ab061f 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -938,11 +938,12 @@ bool LiveIntervals::JoinCopy(MachineInstr *CopyMI, if (JoinIntervals(DestInt, SrcInt)) { if (isDead) { // Result of the copy is dead. Propagate this property. - if (SrcStart == 0 && MRegisterInfo::isPhysicalRegister(repSrcReg)) { - // Live-in to the function but dead. Remove it from MBB live-in set. + if (SrcStart == 0) { + assert(MRegisterInfo::isPhysicalRegister(repSrcReg) && + "Live-in must be a physical register!"); + // Live-in to the function but dead. Remove it from entry live-in set. // JoinIntervals may end up swapping the two intervals. - MachineBasicBlock *MBB = CopyMI->getParent(); - MBB->removeLiveIn(repSrcReg); + mf_->begin()->removeLiveIn(repSrcReg); } else { MachineInstr *SrcMI = getInstructionFromIndex(SrcStart); if (SrcMI) { |