[PATCH] D100804: [lld-macho] Support subtractor relocations that reference sections

[Jez Ng via Phabricator via llvm-commits]

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The minuend (but not the subtrahend) can reference a section.

Note that we do not yet properly validate that the subtrahend isn't
referencing a section; I've filed PR50034 to track that.

I've also extended the reloc-subtractor.s test to reorder symbols, to
make sure that the addends are being associated with the minuend (and not
the subtrahend) relocation.

Fixes PR49999.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D100804

Files:
  lld/MachO/Arch/ARM64.cpp
  lld/MachO/Arch/ARM64Common.cpp
  lld/MachO/Arch/ARM64_32.cpp
  lld/MachO/Arch/X86_64.cpp
  lld/MachO/InputFiles.cpp
  lld/MachO/InputSection.cpp
  lld/test/MachO/reloc-subtractor.s

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