[Bug target/119628] Need better mechanisms to manage register saves in callee for tail calls

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119628

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
no_calle(e|r)_saved_registers=gpr(16|32)?