[all-commits] [llvm/llvm-project] 981523: [ORC-RT][ORC] Handle dynamic unwind registration f...

[Peter S. Housel via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 981523b2e4675d4be496a333583b2f728c057d02
      https://github.com/llvm/llvm-project/commit/981523b2e4675d4be496a333583b2f728c057d02
  Author: Peter S. Housel <housel at acm.org>
  Date:   2022-05-06 (Fri, 06 May 2022)

  Changed paths:
    M compiler-rt/lib/orc/elfnix_platform.cpp
    A compiler-rt/test/orc/TestCases/FreeBSD/ehframe-default.cpp
    A compiler-rt/test/orc/TestCases/FreeBSD/ehframe-libunwind.cpp
    A compiler-rt/test/orc/TestCases/Linux/ehframe-default.cpp
    A compiler-rt/test/orc/TestCases/Linux/ehframe-libunwind.cpp
    M compiler-rt/test/orc/lit.cfg.py
    M compiler-rt/test/orc/lit.site.cfg.py.in
    M llvm/include/llvm/ExecutionEngine/Orc/ELFNixPlatform.h
    M llvm/lib/ExecutionEngine/Orc/ELFNixPlatform.cpp

  Log Message:
  -----------
  [ORC-RT][ORC] Handle dynamic unwind registration for libunwind

This changes the ELFNix platform Orc runtime to use, when available,
the __unw_add_dynamic_eh_frame_section interface provided by libunwind
for registering .eh_frame sections loaded by JITLink. When libunwind
is not being used for unwinding, the ELFNix platform detects this and
defaults to the __register_frame interface provided by libgcc_s.

Reviewed By: lhames

Differential Revision: https://reviews.llvm.org/D114961