[lld] [LLD][ELF] Skip non-SHF_ALLOC sections when checking max VA and max VA difference in relaxOnce() (PR #145863)

[Fangrui Song via llvm-commits]

MaskRay wrote:

This is correct but can you edit /x86-64-gotpc-relax-too-far.s to make this testable?


https://github.com/llvm/llvm-project/pull/145863