https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114902
--- Comment #13 from GCC Commits ---
The master branch has been updated by Jakub Jelinek :
https://gcc.gnu.org/g:0b93a0ae153ef70a82ff63e67926a01fdab9956b
commit r15-520-g0b93a0ae153ef70a82ff63e67926a01fdab9956b
Author: Jakub Jelinek
Date:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114902
--- Comment #12 from Andrew Pinski ---
*** Bug 115092 has been marked as a duplicate of this bug. ***
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114902
--- Comment #11 from Segher Boessenkool ---
So, is there a simplified testcase that *actually* shows any *actual* problem?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114902
--- Comment #10 from Segher Boessenkool ---
(_extract, btw.)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114902
--- Comment #9 from Segher Boessenkool ---
(In reply to Andrew Pinski from comment #2)
> We go from CCGC with a sign_extend to a zero_extend with CCZ. that can't be
> right.
Why not? We prefer zero_extend whenever it has the same result.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114902
Richard Biener changed:
What|Removed |Added
Target Milestone|14.0|14.2
--- Comment #8 from Richard
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114902
--- Comment #7 from Andrew Pinski ---
(In reply to Segher Boessenkool from comment #6)
> (In reply to Andrew Pinski from comment #2)
> > Looks like the issue is during combine.
> >
> > We go from CCGC with a sign_extend to a zero_extend with
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114902
--- Comment #6 from Segher Boessenkool ---
(In reply to Andrew Pinski from comment #2)
> Looks like the issue is during combine.
>
> We go from CCGC with a sign_extend to a zero_extend with CCZ. that can't be
> right.
Why is that not correct?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114902
--- Comment #5 from Andrew Pinski ---
(In reply to Andrew Pinski from comment #4)
> here is a reduced testcase:
> Note ` -O1 -fno-tree-fre -fno-tree-forwprop -fno-tree-ccp
> -fno-tree-dominator-opts`
This testcase is broken in GCC 13 for
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114902
--- Comment #4 from Andrew Pinski ---
here is a reduced testcase:
```
[[gnu::noipa]]
int f(int b)
{
int tt1 = ~b;
int t = 1 & tt1;
int e = -t;
int tt = e >= -1;
if (tt) return 0;
__builtin_trap();
}
int main()
{
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114902
--- Comment #3 from Andrew Pinski ---
Note this is almost definitely a latent bug exposed by some change. Might be
interesting to see what change exposed it but not so much really.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114902
Andrew Pinski changed:
What|Removed |Added
Component|target |rtl-optimization
--- Comment #2 from
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