[Bug tree-optimization/126458] [16/17 Regression] Wrong code with ((int)a)>0 ? (type1)a : CST since r16-4585
"pinskia at gcc dot gnu.org via Gcc-bugs" <[email protected]>
| Newsgroups | gmane.comp.gcc.bugs |
|---|---|
| Message-ID | <[email protected]/bugzilla/> |
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126458
Drea Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[16/17 Regression] Wrong |[16/17 Regression] Wrong
|code with ((int)a)>0 ? |code with ((int)a)>0 ?
|(type1)a : CST |(type1)a : CST since
| |r16-4585
--- Comment #2 from Drea Pinski <pinskia at gcc dot gnu.org> ---
widest_int c1 = wi::mask<widest_int>(TYPE_PRECISION (type) - 1, 0);
The problem is the wrong precision is used here. it should have been c1_type or
from_type.
This only shows up with precision which differ by 1 which is why it does not
show up more.
This bug was introduced with r16-4585-ga4e033fb51d566 .