[Bug target/51244] [SH] Inefficient conditional branch and code around T bit

[olegendo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51244

--- Comment #83 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to Oleg Endo from comment #71)
> 
> * The RTL pass does the treg combine only when there is a conditional
> branch.  It should also handle conditional move insns (-mpretend-cmove).
> 

It does now.  It also handles nott cbranch sequences by inverting the branch
condition and deleting the nott insn.