On 07/21/2011 08:47 AM, Richard Guenther wrote: > Hm, of course some targets define unsigned float expanders just do > do the complicated stuff manually (which is why I didn't look > at the conversion optabs).
Unfortunately, there's no way to tell optabs.c not to widen conversions all the way into software-only fp modes. This has forced backends to replicate the fallback logic. > I assume that if a target can do > an unsigned -> float conversion it can also to a signed -> float > conversion of the same source mode (probably a safe assumption?). That's an assumption that's borne out in the md files. r~
