[X86][BMI] Added fast-isel tests for BMI1 intrinsics

A lot of the codegen is pretty awful for these as they are mostly implemented as generic bit twiddling ops 

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272508 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed