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Don't use LiveVariables::VarInfo::DefInst.

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llvm-svn: 45815
This commit is contained in:
Owen Anderson 2008-01-10 03:12:54 +00:00
parent 0f8c7c4a73
commit d445b8813f
1 changed files with 8 additions and 1 deletions
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9
llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -309,7 +309,14 @@ void LiveIntervals::handleVirtualRegisterDef(MachineBasicBlock *mbb,
// are actually two values in the live interval. Because of this we
// need to take the LiveRegion that defines this register and split it
// into two values.
unsigned DefIndex = getDefIndex(getInstructionIndex(vi.DefInst));
MachineRegisterInfo& MRI = mbb->getParent()->getRegInfo();
unsigned lowIndex = ~0U;
for (MachineRegisterInfo::def_iterator DI = MRI.def_begin(interval.reg),
DE = MRI.def_end(); DI != DE; ++DI)
if (getInstructionIndex(&*DI) < lowIndex)
lowIndex = getInstructionIndex(&*DI);
unsigned DefIndex = getDefIndex(lowIndex);
unsigned RedefIndex = getDefIndex(MIIdx);
const LiveRange *OldLR = interval.getLiveRangeContaining(RedefIndex-1);