On Thu, Aug 08, 2019 at 12:43:52PM -0400, Paul Koning wrote: > > On Aug 8, 2019, at 12:25 PM, Vladimir Makarov <vmaka...@redhat.com> wrote: > > The old reload (reload[1].c) supports such addressing. As modern > > mainstream architectures have no this kind of addressing, it was not > > implemented in LRA. > > Is LRA only intended for "modern mainstream architectures"?
I sure hope not! But it has only been *used* and *tested* much on such, so far. Things are designed to work well for modern archs. > If yes, why is the old reload being deprecated? You can't have it both ways. > Unless you want to obsolete all "not modern mainstream architectures" in > GCC, it doesn't make sense to get rid of core functionality used by those > architectures. > > Indirect addressing is a key feature in size-optimized code. That doesn't mean that LRA has to support it, btw, not necessarily; it may well be possible to do a good job of this in the later passes? Maybe postreload, maybe some peepholes, etc.? Segher
