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2ca6b3c374
Now that the weird X86 sub_ss and sub_sd sub-register indexes are gone, there is no longer a need for the CompositeIndices construct in .td files. Sub-register index composition can be specified on the SubRegIndex itself using the ComposedOf field. Also enforce unique names for sub-registers in TableGen. The same sub-register cannot be available with multiple sub-register indexes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160842 91177308-0d34-0410-b5e6-96231b3b80d8