[PATCH] D70201: [mips] Do not emit R_MIPS_JALR for sym+offset in case of O32 ABI

[Simon Atanasyan via Phabricator via llvm-commits]

atanasyan created this revision.
atanasyan added reviewers: Petar.Avramovic, mstojanovic, mbrkusanin.
Herald added subscribers: jrtc27, hiraditya, arichardson, sdardis.
Herald added a project: LLVM.

O32 ABI uses relocations in REL format. Relocation's addend is written in place. R_MIPS_JALR relocation points to the `jalr` instruction which does not have a place to store the relocation addend. So it's impossible to save non-zero "offset". This patch blocks emission of `R_MIPS_JALR` relocations in such cases.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D70201

Files:
  llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
  llvm/test/MC/Mips/expansion-jal-sym-pic.s

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