[Bug tree-optimization/126760] [16/17 Regression] Wrong code at -O2 on x86_64-pc-linux-gnu
"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=126760
Drea Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2026-08-09
--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Confirmed. Maybe ifcvt related to switch expansions because turning off the
vectorizer fixes the issue.
Also:
switch (f_14) <default: <L4> [66.67%], case 1: <L4> [66.67%], case 3: <L14>
[33.33%]>
Should have been `case 1` and `default` merged such that the switch will then
have been converted into just if (f_14 == 3) goto L14; else goto L4. This
happens after pre.