Add a command line option 'fregister_global_dtors_with_atexit' to
register destructor functions annotated with __attribute__((destructor))
using __cxa_atexit or atexit.
Register destructor functions annotated with __attribute__((destructor))
calling __cxa_atexit in a synthesized constructor function instead of
emitting references to the functions in a special section.
The primary reason for adding this option is that we are planning to
deprecate the __mod_term_funcs section on Darwin in the future. This
feature is enabled by default only on Darwin. Users who do not want this
can use command line option 'fno_register_global_dtors_with_atexit' to
disable it.
rdar://problem/33887655
Differential Revision: https://reviews.llvm.org/D45578
llvm-svn: 330199
diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index 27b0677..84118a5 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -3696,6 +3696,9 @@
void registerGlobalDtorWithAtExit(const VarDecl &D, llvm::Constant *fn,
llvm::Constant *addr);
+ /// Call atexit() with function dtorStub.
+ void registerGlobalDtorWithAtExit(llvm::Constant *dtorStub);
+
/// Emit code in this function to perform a guarded variable
/// initialization. Guarded initializations are used when it's not
/// possible to prove that an initialization will be done exactly