[all-commits] [llvm/llvm-project] b31f41: [Clang] Support a user-defined __dso_handle

[Andrew Savonichev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b31f41e78b2722785f3df1da0d77dfcd68125d15
      https://github.com/llvm/llvm-project/commit/b31f41e78b2722785f3df1da0d77dfcd68125d15
  Author: Andrew Savonichev <andrew.savonichev at gmail.com>
  Date:   2021-06-07 (Mon, 07 Jun 2021)

  Changed paths:
    M clang/lib/CodeGen/CodeGenModule.cpp
    A clang/test/CodeGenCXX/dso-handle-custom.cpp

  Log Message:
  -----------
  [Clang] Support a user-defined __dso_handle

This fixes PR49198: Wrong usage of __dso_handle in user code leads to
a compiler crash.

When Init is an address of the global itself, we need to track it
across RAUW. Otherwise the initializer can be destroyed if the global
is replaced.

Differential Revision: https://reviews.llvm.org/D101156