[AArch64][SVE] Asm: Add support for RDVL/ADDVL/ADDPL instructions

Reviewers: fhahn, rengolin, t.p.northover, echristo, olista01, SjoerdMeijer

Reviewed By: SjoerdMeijer

Subscribers: SjoerdMeijer, aemerson, javed.absar, tschuett, kristof.beyls, llvm-commits

Differential Revision: https://reviews.llvm.org/D41900

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@322951 91177308-0d34-0410-b5e6-96231b3b80d8
10 files changed