[PATCH] D111413: [Orc] Support atexit in Orc(JITLink)

[luxufan via Phabricator via llvm-commits]

StephenFan created this revision.
StephenFan added a reviewer: lhames.
Herald added a subscriber: hiraditya.
StephenFan requested review of this revision.
Herald added projects: Sanitizers, LLVM.
Herald added subscribers: llvm-commits, Sanitizers.

There is a bug reported at https://bugs.llvm.org/show_bug.cgi?id=48938

After looking through the glibc, I found the `atexit(f)` is the same as `__cxa_atexit(f, NULL, NULL)`. In orc runtime, we identify different JITDylib by their dso_handle value, so that a NULL dso_handle is invalid. So in this patch, I added a `PlatformJDDSOHandle` to ELFNixRuntimeState, and functions which are registered by atexit will be registered at PlatformJD.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D111413

Files:
  compiler-rt/lib/orc/elfnix_platform.cpp
  compiler-rt/test/orc/TestCases/Linux/x86-64/trivial-atexit.S
  llvm/lib/ExecutionEngine/Orc/ELFNixPlatform.cpp

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