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
..
2013-03-08 17:01:18 +00:00