[PATCH] D97103: [lld-macho] Don't emit rebase opcodes for subtractor minuend relocs

[Jez Ng via Phabricator via llvm-commits]

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Also add a few asserts to verify that we are indeed handling an
UNSIGNED relocation as the minued. I haven't made it an actual
user-facing error since I don't think llvm-mc is capable of generating
SUBTRACTOR relocations without an associated UNSIGNED.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D97103

Files:
  lld/MachO/Arch/ARM64.cpp
  lld/MachO/InputFiles.cpp
  lld/MachO/InputSection.cpp
  lld/MachO/Target.h
  lld/MachO/Writer.cpp
  lld/test/MachO/reloc-subtractor.s

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