[PPC] corrections in two testcases

Removing sensitivity to scheduling (by using CHECK-DAG instead of CHECK) and
some other minor corrections.

In preparation to commit Power9 processor model.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289900 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed