[X86] Add BITALG, VAES, VBMI2, VNNI, VPCLMULQDQ, and VPOPCNTDQ instructions to icelake CPU.

This is based on table 1-1 of the October 2017 revision of IntelĀ® Architecture Instruction Set Extensions and Future Features Programming Reference

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@318799 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed