[llvm] [RuntimeDyld] Add LoongArch support (PR #114741)

[Lu Weining via llvm-commits]

https://github.com/SixWeining commented:

Hi @lhames, we know MCJIT/RuntimeDyld are going to be removed, but this change is necessary to get LoongArch support in lldb (#114742). And LoongArch has already supported ORCJIT and JITLink and it has been verified in production environments (e.g. mesa3d llvmpipe). That means lldb can switch to ORCJIT/JITLink before MCJIT/RuntimeDyld being removed without breaking LoongArch support.

I hope this could be reviewed and merged. Thanks. :)

cc @DavidSpickett 

https://github.com/llvm/llvm-project/pull/114741