[Bug target/120888] [16 regression] promotion of unsigned char and short function arguments sign extends them since r16-170-ga670ebde3995

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120888

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 61769
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61769&action=edit
A patch

Please try this.