> From: Jeff Law [mailto:l...@redhat.com] > Sent: Wednesday, February 11, 2015 2:49 PM > > > > Wouldn't that only tell whether the macro can stay undefined for > rs6000? > > MD files for rs6000 could have been tighten since then but not others > > backend's MD files. > It's certainly possible, but unlikely. > > I would virtually guarantee that lm32, rx, & mep, rx, tilegx, tilegxpro > were never updated.
Perfect, I was hoping that one of these others might not have changed much. > > So another approach would be to build some cross tools and verify that > they generate the same code before/after ripping that code out. Of course both approaches are not exclusive. I'll try to test with *both* rs6000 bootstrap and with a cross-compiler for one of these targets. > You have to request access. IIRC, there's a big ppc64 machine in there. Will do. Best regards, Thomas
