Fix @llvm.prefetch isel. Selecting between pld / pldw using the first immediate rw. There is currently no intrinsic that matches to pli.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118237 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed