[PATCH] D68057: [mips] Relax jalr/jr instructions using R_MIPS_JALR relocation

[Simon Atanasyan via Phabricator via llvm-commits]

atanasyan created this revision.
atanasyan added reviewers: ruiu, grimar.
Herald added subscribers: MaskRay, jrtc27, arichardson, sdardis, emaste.
Herald added a reviewer: espindola.
Herald added a project: LLVM.

The R_MIPS_JALR relocation denotes jalr/jr instructions in position independent code. Both these instructions take a target's address from the $25 register. If offset to the target symbol fits into the 18-bits, it's more efficient to replace jalr/jr by bal/b instructions.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D68057

Files:
  lld/ELF/Arch/Mips.cpp
  lld/test/ELF/mips-jalr.s

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