[llvm] [LoongArch] Set isReMaterializable on LU{12,32,52}I.D/ADDI.D and {X}ORI instructions (PR #94552)

[Lu Weining via llvm-commits]

https://github.com/SixWeining commented:

Does this patch only touch LA32 tests? Is there any LA64 tests benefit from it?

https://github.com/llvm/llvm-project/pull/94552