[all-commits] [llvm/llvm-project] ef54e0: [AArch64] Avoid generating LDAPUR on certain cores...

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ef54e0bbfbef59932a59a1640f1f9e14b70cc41b
      https://github.com/llvm/llvm-project/commit/ef54e0bbfbef59932a59a1640f1f9e14b70cc41b
  Author: David Green <david.green at arm.com>
  Date:   2025-01-27 (Mon, 27 Jan 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64Features.td
    M llvm/lib/Target/AArch64/AArch64InstrAtomics.td
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    M llvm/lib/Target/AArch64/AArch64Processors.td
    M llvm/test/CodeGen/AArch64/Atomics/aarch64-atomic-load-rcpc_immo.ll

  Log Message:
  -----------
  [AArch64] Avoid generating LDAPUR on certain cores (#124274)

On the CPUs listed below, we want to avoid LDAPUR for performance
reasons. Add a tuning feature to disable them when using:
 -mcpu=neoverse-v2
 -mcpu=neoverse-v3
 -mcpu=cortex-x3
 -mcpu=cortex-x4
 -mcpu=cortex-x925



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