https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110975
Bug ID: 110975
Summary: Missed unlooping
Product: gcc
Version: 13.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: hubicka at gcc dot gnu.org
Target Milestone: ---
This is what we generate from loop-split for hmmer benchmark:
int *a;
void
test (int n)
{
int i;
for (i=0 ; i < n; i++)
a[i]++;
for (i=0 ; i <= n; i++)
a[i]--;
}
The second loop never iterates but we don't seem to be able to figure this out
and leave the loop around.
