[Bug target/121603] When z is a variable of type _BitInt(64), gcc -m32 evaluates _Alignof(z) to 8

[hjl.tools at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121603

--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Joseph S. Myers from comment #5)
> Do we know if Clang follows the same _BitInt ABI for 32-bit x86? The ABI
> specification for _BitInt still hasn't been added to the 32-bit ABI document
> at https://gitlab.com/x86-psABIs/i386-ABI .

Here is the merge request:

https://gitlab.com/x86-psABIs/i386-ABI/-/merge_requests/2

Someone should verify that it matches what GCC generates.