[all-commits] [llvm/llvm-project] 5fb871: [AArch64] Define GCS operations as SYS and SYSL al...

[Jonathan Thackray via All-commits]

  Branch: refs/heads/users/jthackray/fix_sysl_aliases
  Home:   https://github.com/llvm/llvm-project
  Commit: 5fb8711cfffd6ce1702b0a71c5a37070a90eb7a6
      https://github.com/llvm/llvm-project/commit/5fb8711cfffd6ce1702b0a71c5a37070a90eb7a6
  Author: Jonathan Thackray <jonathan.thackray at arm.com>
  Date:   2026-06-12 (Fri, 12 Jun 2026)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp
    M llvm/lib/Target/AArch64/AArch64InstrFormats.td
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    M llvm/test/MC/AArch64/arm64-aliases.s

  Log Message:
  -----------
  [AArch64] Define GCS operations as SYS and SYSL aliases

Move the remaining `GCS` instructions from dedicated opcodes to `SYSxt/SYSLxt`
aliases, keeping a tied `SYSL` pseudo for codegen where `GCS` preserves the`
input register when disabled at runtime.

Update `GCS` intrinsic selection, scheduling, disassembly aliases, and MC
coverage for the generic `SYS/SYSL` encodings.



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