https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92649
--- Comment #3 from Jiangning Liu <jiangning.liu at amperecomputing dot com> ---
It is a stupid test, but it is simplified from a real application.
To solve even more complicated scenario, this simple case needs to be addressed
first.
If we change the case to be as below,
int f(void)
{
int i, a[1024], s=0;
for (i=0; i<1024; i++)
a[i] = 5;
for (i=0; i<37; i++)
s += a[i];
return s;
}
the loop peeling will not work, but compiler should still know the store to
elements with index >= 37 can all be eliminated. Can any framework in GCC solve
this problem?
