On Tue, Jun 9, 2015 at 12:39 PM, Eric Botcazou <ebotca...@adacore.com> wrote: >> What's the reason to not expose the byte swapping operations earlier, like >> on GIMPLE? (or even on GENERIC?) > > That would be too heavy, every load and store in GENERIC/GIMPLE would have an > associated byte swapping operation, although you don't know if they will be > needed in the end. For example, if the structure is scalarized, they are not.
Yes, but I'd expect them to be optimized away (well, hopefully). Anwyay, and I thought use of the feature would be rare so that "every load and store" is still very few? I suppose doing the lowering somewhen during the GIMPLE optimization pipeline would still be possible to address missed-optimization concerns. >> What frontends are affected? > > The branch contains a working implementation for the C and Ada front-ends, and > the beginning of an implementation for the C++ front-end. Ok, I see. Richard. > -- > Eric Botcazou
