> If a MEM subreg is neither simplified to an outermode MEM nor reloaded > in innermode then I believe LRA will never resolve the subreg. Even if that > is not true I'm fairly certain the addition of the code has changed > behaviour and that the change is not well understood, as explained above.
Fair enough, let's remove the "return false" then. > I hadn't spotted that table, very helpful, thanks. The other architectures > I listed may be helped in their transition to LRA. I guess they are > attempting to move given optional LRA support. You can send me the patch(es) in advance, I'll give it a try on SPARC. -- Eric Botcazou