[X86][Btver2] Add llvm-mca tests to show pipe resource usage of most vector instructions

Hopefully these tests can be easily reused should any other subtarget get in depth llvm-mca coverage (we can either copy the tests or move them into a common dir and run it with multiple prefixes).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@327788 91177308-0d34-0410-b5e6-96231b3b80d8
11 files changed