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Commit 972c8fab authored by Jakob Stoklund Olesen's avatar Jakob Stoklund Olesen
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Fix PR4753.

When undoing a reuse in ReuseInfo::GetRegForReload, check if it was only a
sub-register being used. The MachineOperand::getSubReg() method is only valid
for virtual registers, so we have to recover the sub-register index manually.

llvm-svn: 79855
parent 89b422c1
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