[AArch64][SVE2] Asm: support SVE2 Accumulate Group

Summary:
Patch adds support for the following instructions:

SVE2 bitwise shift and insert:
    * SRI, SLI

SVE2 bitwise shift right and accumulate:
    * SSRA, USRA, SRSRA, URSRA

SVE2 complex integer add:
    * CADD, SQCADD

SVE2 integer absolute difference and accumulate:
    * SABA, UABA

SVE2 integer absolute difference and accumulate long:
    * SABALB, SABALT, UABALB, UABALT

SVE2 integer add/subtract long with carry:
    * ADCLB, ADCLT, SBCLB, SBCLT

The specification can be found here:
https://developer.arm.com/docs/ddi0602/latest

Reviewed By: SjoerdMeijer

Differential Revision: https://reviews.llvm.org/D62204

llvm-svn: 361622
38 files changed
tree: d795f894b2bf0d54d2230ddc4b88cc0c03512a22
  1. .arcconfig
  2. .clang-format
  3. .clang-tidy
  4. .gitignore
  5. README.md
  6. clang-tools-extra/
  7. clang/
  8. compiler-rt/
  9. debuginfo-tests/
  10. libclc/
  11. libcxx/
  12. libcxxabi/
  13. libunwind/
  14. lld/
  15. lldb/
  16. llgo/
  17. llvm/
  18. openmp/
  19. parallel-libs/
  20. polly/
  21. pstl/
README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.