[lld] [llvm] [LTO][lld] Emit textual assembly code with '--save-temps' (PR #195922)

[Fangrui Song via llvm-commits]

https://github.com/MaskRay commented:

lld code/test looks good. Should the description be updated with a summary of the approach?

https://github.com/llvm/llvm-project/pull/195922