[Bug target/88469] [7/8 regression] AAPCS/AAPCS64 - Struct with 64-bit bitfield (128-bit on AArch64) may be passed in wrong registers

[stefanrin at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88469

--- Comment #14 from Stefan Ring <stefanrin at gmail dot com> ---
(In reply to Richard Earnshaw from comment #13)
> Note that if you have root access on your board you can modify the kernel's
> behaviour for various unaligned accesses by changing /proc/cpu/alignment
> (see Documentation/arm/mem_alignment in the kernel sources).  You might want
> to try setting this to 3 to get the kernel to report (but fix up) any
> misaligned accesses).

I know that, but armv7 does not trap at all for misaligned ldrd, at the
hardware level. It does trap if it’s not even 32bit-aligned, but that’s a
different matter.