[PATCH] D127581: WIP [ELF] Relax R_RISCV_ALIGN

[Fangrui Song via Phabricator via llvm-commits]

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Alternative to D125036 <https://reviews.llvm.org/D125036>. This patch implements R_RISCV_ALIGN relocations so that
we can deal with -mrelax object files (i.e. -mno-relax is no longer needed).
Call/load/store/etc instructions are not implemented.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D127581

Files:
  lld/ELF/Arch/RISCV.cpp
  lld/ELF/InputSection.cpp
  lld/ELF/InputSection.h
  lld/ELF/Relocations.cpp
  lld/ELF/Relocations.h
  lld/ELF/Target.h
  lld/ELF/Writer.cpp
  lld/test/ELF/riscv-relax-align-rvc.s
  lld/test/ELF/riscv-relax-align.s
  lld/test/ELF/riscv-reloc-align.s

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