[all-commits] [llvm/llvm-project] d21fb0: [lld][ELF] Allow Arm PC-relative relocations in PI...

[Eleanor Bonnici via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d21fb06a6e36048e6729c51c351ff8c4055e8381
      https://github.com/llvm/llvm-project/commit/d21fb06a6e36048e6729c51c351ff8c4055e8381
  Author: Eleanor Bonnici <eleanor.bonnici at arm.com>
  Date:   2024-01-11 (Thu, 11 Jan 2024)

  Changed paths:
    M lld/ELF/Relocations.cpp
    M lld/test/ELF/arm-adr.s

  Log Message:
  -----------
  [lld][ELF] Allow Arm PC-relative relocations in PIC links (#77304)

The relocations that map to R_ARM_PCA are equivalent to R_PC. They are
PC-relative and safe to use in shared libraries, but have a different
relocation code as they are evaluated differently. Now that LLVM may
generate these relocations in object files, they may occur in
shared libraries or position-independent executables.