https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108574
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Summary|wrong code at -Os and above |[13 Regression] wrong code
|on x86_64-linux-gnu |at -Os and above on
| |x86_64-linux-gnu
Target Milestone|--- |13.0
Keywords| |wrong-code
Last reconfirmed| |2023-01-27
Status|UNCONFIRMED |NEW
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Zhendong Su from comment #0)
> It appears to be a recent regression from 12.2.
In the testcase from comment #0, pre is messing it up because of an
uninitialized variable on one path (which is not taken).
Note somehow the statement:
d >= b;
changes the IR slightly ...
testcase in comment #1 also depends on an uninitialized variable on a path not
taken too (in that case j).
testcase in comment #2 also looks similar and depends on an unintialized
variable on a path not taken too.
