[llvm] [AArch64] Replace AND with LSL#2 for LDR target (#34101) (PR #89531)

[via llvm-commits]

ParkHanbum wrote:

@davemgreen Thanks, I think I'm almost there thanks to your advice, I was thinking I should do it in `LOAD`. it's my mistake.

Can I ask one more thing?

I can check the legality of the address via `TLI.isLegalAddressingMode()`, but what function in the TLI can I utilize to check if `PreIndex` is allowed in architecture?


https://github.com/llvm/llvm-project/pull/89531