[Bug target/63783] [4.9/5 Regression] [SH] Miscompilation of boolean negation on SH4 using -O2

[olegendo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63783

--- Comment #2 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Thanks for tracing this down.  Yes, it looks like a sh_treg_combine bug.  I
will have a look at it, but probably only in 2 weeks from now.