[Bug rtl-optimization/38711] ira should not be using df-lr except at -O1.

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38711

--- Comment #12 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Steven Bosscher from comment #10)
> (In reply to Eric Gallager from comment #9)
> 
> Not much has changed. There's LRA now, so for targets using LRA
> things may now work. 

That's most targets...