On 09/12/2015 10:44 PM, David Miller wrote: > From: Eric Botcazou <ebotca...@adacore.com> > Date: Sat, 12 Sep 2015 16:04:09 +0200 > >>> Richard, Eric, any objections? >> >> Do we really need to promote to 64-bit if TARGET_ARCH64? Most 32-bit >> instructions are still available. Otherwise this looks good to me. > > No, we don't, we can just promote to 32-bit. I'll make that adjustment > and update the backends page as well.
There's a possibility of benefit though -- br and movr only work with DImode. You may want to examine the generated code to decide one way or another. It's possible that the extra comparison instructions don't really matter compared with the larger spill slot, but you never know... r~
