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Author SHA1 Message Date
Jakob Stoklund Olesen
778ef97c76 Rewrite the physreg part of findLastUseBefore(). 
To find the last use of a register unit, start from the bottom and scan
upwards until a user is found.

<rdar://problem/13353090>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176706 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-03-08 18:08:57 +00:00