[Bug libffi/83636] libffi/mips/n32: don't .set mips4 for mips r6

[syq at debian dot org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83636

--- Comment #2 from YunQiang Su <syq at debian dot org> ---
Patch has been sent to:
https://gcc.gnu.org/pipermail/gcc-patches/2021-August/578243.html