On November 5, 2015 2:40:30 PM GMT+01:00, Michael Matz <m...@suse.de> wrote: >Hi, > >On Wed, 4 Nov 2015, Richard Biener wrote: > >> Ah, it was _left_ shift of negative values that ubsan complains >about. > >Note that this is only for the frontend definition of shifts. I don't >see >why gimple shouldn't define it to the only sensible definition there >is, >which also happens to be the one that all CPUs in the world implement >(well, those using two-complement representation at least).
Yeah, but front ends and back end are not separated enough to have both. Richard. > >Ciao, >Michael.
