[AArch64][SVE] Asm: Support for TBL instruction.

Support for SVE's TBL instruction for programmable table
lookup/permute using vector of element indices, e.g.

  tbl  z0.d, { z1.d }, z2.d

stores elements from z1, indexed by elements from z2, into z0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@336544 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed