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I accidentally removed this check in an earlier commit, which cause breakage in the pre alloc splitter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62678 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1219,6 +1219,10 @@ bool PreAllocSplitting::SplitRegLiveInterval(LiveInterval *LI) {
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MachineInstr *DefMI = (ValNo->def != ~0U)
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? LIs->getInstructionFromIndex(ValNo->def) : NULL;
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// If this would create a new join point, do not split.
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if (DefMI && createsNewJoin(LR, DefMI->getParent(), Barrier->getParent()))
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return false;
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// Find all references in the barrier mbb.
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SmallPtrSet<MachineInstr*, 4> RefsInMBB;
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for (MachineRegisterInfo::reg_iterator I = MRI->reg_begin(CurrLI->reg),
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