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Commit f5bc1eb9 authored by Jakob Stoklund Olesen's avatar Jakob Stoklund Olesen
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Don't override subreg functions in targets without subregisters. 

Some targets have no sub-registers at all. Use the TargetRegisterInfo
versions of composeSubRegIndices(), getSubClassWithSubReg(), and
getMatchingSuperRegClass() for those targets.

llvm-svn: 156075
parent c0f58661
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