[all-commits] [llvm/llvm-project] db7cb3: [AArch64] Add v8.9a/v9.4a FEAT_ATS1A

[Sam Elliott via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: db7cb353403357d788f780e362703a81d0fbf546
      https://github.com/llvm/llvm-project/commit/db7cb353403357d788f780e362703a81d0fbf546
  Author: Archibald Elliott <archibald.elliott at arm.com>
  Date:   2023-03-28 (Tue, 28 Mar 2023)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64SystemOperands.td
    A llvm/test/MC/AArch64/armv8.9a-ats1a.s
    A llvm/test/MC/Disassembler/AArch64/armv8.9a-ats1a.txt

  Log Message:
  -----------
  [AArch64] Add v8.9a/v9.4a FEAT_ATS1A

FEAT_ATS1A adds three new AT system instruction aliases. This feature is
optional from v8.9a/v9.4a. FEAT_ATS1A is a very late addition to the
2022 A-profile VMSA extension, and has not yet been added to the public
docs available on developer.arm.com

These AT instructions are added without a command-line flag or feature,
because it is system-instruction only, and FEAT_S1PIE also has no
command-line flag.

Differential Revision: https://reviews.llvm.org/D146962