[all-commits] [llvm/llvm-project] a9ca22: [AArch64][SME] Remove support for `-arch64-enable-...

[Benjamin Maxwell via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a9ca220e8138f39d504faa48ba771dd90fd89838
      https://github.com/llvm/llvm-project/commit/a9ca220e8138f39d504faa48ba771dd90fd89838
  Author: Benjamin Maxwell <benjamin.maxwell at arm.com>
  Date:   2025-10-06 (Mon, 06 Oct 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64FrameLowering.cpp
    M llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
    M llvm/lib/Target/AArch64/AArch64PrologueEpilogue.cpp
    M llvm/lib/Target/AArch64/AArch64RegisterInfo.td
    M llvm/lib/Target/AArch64/AArch64Subtarget.cpp
    M llvm/lib/Target/AArch64/AArch64Subtarget.h
    M llvm/lib/Target/AArch64/SMEInstrFormats.td
    R llvm/test/CodeGen/AArch64/spill-fill-zpr-predicates.mir
    M llvm/test/CodeGen/AArch64/ssve-stack-hazard-remarks.ll

  Log Message:
  -----------
  [AArch64][SME] Remove support for `-arch64-enable-zpr-predicate-spills` (#161819)

This was a stop-gap solution until we implemented
`-aarch64-split-sve-objects`. It was never enabled by default, and
likely saw no real-world use.

Let's remove this to reduce the maintenance burden.



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