David Gwynne: > > Starting with POWER7 (Power ISA v.2.06), there are also corresponding > > 64-bit instructions. Do we want to use those on powerpc64? Or do > > we want to keep compatibility with older processors? > > I'm ok with using the instructions. I can't think of what benefit compat in > this space would actually provide.
Well, if people were to extend powerpc64 down to the PowerPC G5 (= POWER4) Apple machines, then it would not be possible to use those instructions. > Did they also happen to add opcodes for doing swaps in registers? No. (I haven't looked at the vector instructions yet.) -- Christian "naddy" Weisgerber na...@mips.inka.de
