https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66984
--- Comment #2 from Jay <jay.krell at cornell dot edu> --- 1 please be sure that dividing the most negative number by -1 "works". Perhaps just don't optimize anything with negstive numbers. 2 I suggest that gcc's C/C++ frontends expose these other forms of division, for the sake of testability. Thank you, - Jay On Jul 24, 2015, at 2:09 AM, "rguenth at gcc dot gnu.org" <gcc-bugzi...@gcc.gnu.org> wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66984 > > Richard Biener <rguenth at gcc dot gnu.org> changed: > > What |Removed |Added > ---------------------------------------------------------------------------- > Status|UNCONFIRMED |NEW > Last reconfirmed| |2015-07-24 > Ever confirmed|0 |1 > > --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- > The usual fix in fold-const.c is to make sure to convert operands to the > required type when building the final expression. Thus instead of > > 10828 return fold_build2_loc (loc, EXACT_DIV_EXPR, type, arg0, > arg1); > > do > > return fold_build2_loc (loc, EXACT_DIV_EXPR, type, > fold_convert (type, arg0), fold_convert (type, > arg1)); > > you can see this pattern in many places. > > Care to post a patch? It's pre-approved. > > -- > You are receiving this mail because: > You are on the CC list for the bug.