[X86] Added tests for TESTM and TESTNM (NFC)

Adding this test files now so after another commit that will add a new pattern for
TESTM and TESTNM instructions will show the improvemnts that have been done.

Change-Id: If3908b7f91897d764053312365a2bc1de78b291d

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@315443 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed