[Bug target/59549] [SH] __builtin_return_address causes push/pop of PR

[olegendo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59549

--- Comment #1 from Oleg Endo <olegendo at gcc dot gnu.org> ---
I haven't checked, but it could be related to this.  When shifts are
expanded/combined on SH2 (no dynamic shifts), library function calls might be
intially inserted but then removed again during combine/split1.  If that
happens, PR push/pop insns might appear, although a function doesn't contain
any function call.