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Commit b372abab authored by Christopher Lamb's avatar Christopher Lamb
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Increase efficiency of sign_extend_inreg by using subregisters for truncation.... 

Increase efficiency of sign_extend_inreg by using subregisters for truncation. As the README suggests sign_extend_subreg is selected to (sext(trunc)).

llvm-svn: 41010
parent f0c236fb
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