[Bug target/115954] Alignment of _Atomic structs incompatible between GCC and LLVM

[wilco at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115954

--- Comment #12 from Wilco <wilco at gcc dot gnu.org> ---
This came out of the AArch64 Atomic ABI design work:
https://github.com/ARM-software/abi-aa/pull/256