[PATCH] D141272: [lld][ARM] support position independent thunks for Armv4(T)

[Ties Stuij via Phabricator via llvm-commits]

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- Position independent thunks now work for both Armv4 and Armv4T
- Armv4 arm->arm thunks don't emit a BX anymore, which doesn't exist for the arch. This fixes https://github.com/llvm/llvm-project/issues/50764.
- Armv4 and Armv4T both have the same arm->arm behaviour. Which also is desirable for the above ticket.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141272

Files:
  lld/ELF/Thunks.cpp
  lld/test/ELF/arm-bl-v4.s
  lld/test/ELF/arm-bl-v4t.s
  lld/test/ELF/arm-bx-v4t.s
  lld/test/ELF/arm-thumb-interwork-thunk-v5.s
  lld/test/ELF/arm-thunk-multipass-plt.s

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