Annotate shifts and rotates with SchedRW lists.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177935 91177308-0d34-0410-b5e6-96231b3b80d8
Annotate X86InstrCompiler.td with SchedRW lists.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177936 91177308-0d34-0410-b5e6-96231b3b80d8