[Bug target/65249] unable to find a register to spill in class 'R0_REGS' when compiling protobuf on sh4

[olegendo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65249
--- Comment #11 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Thanks!  If this successfully works around the problem, it probably would also
make sense for GCC 5 with a 'if (!sh_lra_p ()) ...'