diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp index 34134520d65..ebab85fb480 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -623,10 +623,11 @@ void LiveIntervals::handleLiveInRegister(MachineBasicBlock *MBB, } exit: - // Alias of a live-in register might not be used at all. - if (isAlias && end == 0) { + // Live-in register might not be used at all. + if (end == MIIdx) { DOUT << " dead"; - end = getDefIndex(start) + 1; + if (isAlias) + end = getDefIndex(MIIdx) + 1; } assert(start < end && "did not find end of interval?");