Julian Lettner 64902d335c Reland "Lower @llvm.global_dtors using __cxa_atexit on MachO" ...

For MachO, lower `@llvm.global_dtors` into `@llvm_global_ctors` with
`__cxa_atexit` calls to avoid emitting the deprecated `__mod_term_func`.

Reuse the existing `WebAssemblyLowerGlobalDtors.cpp` to accomplish this.

Enable fallback to the old behavior via Clang driver flag
(`-fregister-global-dtors-with-atexit`) or llc / code generation flag
(`-lower-global-dtors-via-cxa-atexit`).  This escape hatch will be
removed in the future.

Differential Revision: https://reviews.llvm.org/D121736

2022-03-23 18:36:55 -07:00

..

lower-global-dtors-existing-dos_handle.ll

Reland "Lower @llvm.global_dtors using __cxa_atexit on MachO"

2022-03-23 18:36:55 -07:00

lower-global-dtors.ll

Reland "Lower @llvm.global_dtors using __cxa_atexit on MachO"

2022-03-23 18:36:55 -07:00