Move this test a bit later, after the point at which we know that we either

Move this test a bit later, after the point at which we know that we either
have an alloca or a parameter, since then the alloca test should make sense
to readers, while before it probably appears too specific.  No functionality
change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165306 91177308-0d34-0410-b5e6-96231b3b80d8