[all-commits] [llvm/llvm-project] 6884fb: [JITLink] Enable exception handling for ELF.

[lhames via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6884fbc2c4fb46d0528c02d16d510f4f725fac11
      https://github.com/llvm/llvm-project/commit/6884fbc2c4fb46d0528c02d16d510f4f725fac11
  Author: Lang Hames <lhames at gmail.com>
  Date:   2021-01-25 (Mon, 25 Jan 2021)

  Changed paths:
    M llvm/lib/ExecutionEngine/JITLink/EHFrameSupport.cpp
    M llvm/lib/ExecutionEngine/JITLink/EHFrameSupportImpl.h
    M llvm/lib/ExecutionEngine/JITLink/ELF_x86_64.cpp
    M llvm/lib/ExecutionEngine/JITLink/MachOLinkGraphBuilder.h
    M llvm/lib/ExecutionEngine/JITLink/MachO_x86_64.cpp
    A llvm/test/ExecutionEngine/JITLink/X86/ELF_ehframe_basic.s

  Log Message:
  -----------
  [JITLink] Enable exception handling for ELF.

Adds the EHFrameSplitter and EHFrameEdgeFixer passes to the default JITLink
pass pipeline for ELF/x86-64, and teaches EHFrameEdgeFixer to handle some
new pointer encodings.

Together these changes enable exception handling (at least for the basic
cases that I've tested so far) for ELF/x86-64 objects loaded via JITLink.