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0371cd8b1c
These tables were indexed by [register][subreg index] which made them, very large and sparse. Replace them with lists of sub-register indexes that match the existing lists of sub-registers. MCRI::getSubReg() becomes a very short linear search, like getSubRegIndex() already was. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160843 91177308-0d34-0410-b5e6-96231b3b80d8
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