[all-commits] [llvm/llvm-project] a1bc3e: [ARMAsmBackend] Add checks for relocation addends ...

[Jonathan Cohen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a1bc3e63cc020aad75b55d8732ab7ae15ea1c973
      https://github.com/llvm/llvm-project/commit/a1bc3e63cc020aad75b55d8732ab7ae15ea1c973
  Author: Jonathan Cohen <jcohen22 at apple.com>
  Date:   2024-10-09 (Wed, 09 Oct 2024)

  Changed paths:
    M llvm/lib/Target/ARM/MCTargetDesc/ARMAsmBackend.cpp
    A llvm/test/MC/ARM/macho-relocs-with-addend-invalid.s
    M llvm/test/MC/ARM/macho-relocs-with-addend.s

  Log Message:
  -----------
  [ARMAsmBackend] Add checks for relocation addends in assembler (#109969)

This PR adds checks that any addends attached to branch instructions are
valid, and can be properly encoded in the branch instruction. Before
this fix, the assembler would silently truncate or round invalid addend
values, creating incorrect branch instructions.



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