[Bug target/94743] IRQ handler doesn't save scratch VFP registers

[rearnsha at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94743

--- Comment #7 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
well, __aeabi_memcpy is required not to clobber the FP state.  Sadly, GCC does
not know about it...