http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51994
--- Comment #30 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-02-01 15:53:25 UTC --- > I'm not sure it's the best thing to do (adjusting 'offset' by > a BITS_PER_UNIT multiple instead of whatever the caller would like the most). > Only the callers would know how they want to adjust for negative bitpos. I don't think the callers are prepared for a reference outside the base object, so there must be a offset. And I don't see what they would want to do with a negative bitpos, apart from translating it somehow or other.
