[Bug target/91189] 20% binary size regression in avr-gcc 9.1.0 from 8.3.0

[ntd at entidi dot it]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91189

--- Comment #3 from Nicola Fontana <ntd at entidi dot it> ---
This is still an issue with gcc-9.2.0.