Frederic Riss <frederic.r...@gmail.com> writes: > Is it possible to describe multi-register values in RTL when the > subparts of the value aren't stored in consecutive registers? For > example having a DI value constructed from 2 unrelated SI registers > (without losing the semantic of the original DI value) ?
Not really. I suppose you could use CONCAT, but you would lose optimizations. I don't know what you are doing but I'll note that the lower-subreg pass can be used to split a DImode value into 2 SImode values after the fact that the value is DImode is no longer relevant. Ian
