address to AnalyzeLoadFromClobberingLoad. This fixes a bug in load-PRE where
PRE is applied to a load that is not partially redundant.
<rdar://problem/16638765>.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207853 91177308-0d34-0410-b5e6-96231b3b80d8