[Bug rtl-optimization/119681] extraneous move instructions when unrolling core_list_reverse () with -O3 -funroll-all-loops; not copying the return block

[artemiy at synopsys dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119681

--- Comment #7 from Artemiy Volkov <artemiy at synopsys dot com> ---
(In reply to Andrew Pinski from comment #6)
> >(Note that the GIMPLE unroller already does this, but it doesn't handle 
> >uncountable loops.)
> 
> Actually the gimple unroller does NOT duplicate exit blocks at all. Rather
> it is how out of ssa works when it deals with phi nodes here and splits the
> live range which allows the rtl to work better.

Thanks.  I will amend the wording.