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Don't use LiveVariables::VarInfo::DefInst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45815 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -309,7 +309,14 @@ void LiveIntervals::handleVirtualRegisterDef(MachineBasicBlock *mbb,
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// are actually two values in the live interval. Because of this we
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// need to take the LiveRegion that defines this register and split it
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// into two values.
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unsigned DefIndex = getDefIndex(getInstructionIndex(vi.DefInst));
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MachineRegisterInfo& MRI = mbb->getParent()->getRegInfo();
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unsigned lowIndex = ~0U;
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for (MachineRegisterInfo::def_iterator DI = MRI.def_begin(interval.reg),
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DE = MRI.def_end(); DI != DE; ++DI)
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if (getInstructionIndex(&*DI) < lowIndex)
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lowIndex = getInstructionIndex(&*DI);
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unsigned DefIndex = getDefIndex(lowIndex);
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unsigned RedefIndex = getDefIndex(MIIdx);
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const LiveRange *OldLR = interval.getLiveRangeContaining(RedefIndex-1);
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